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 #ifdef HAVE_CONFIG_H
  20 #include "config.h"
  21 #endif
  22
  23 #include "sal_eXosip2.h"
  24 #include "private.h"
  25 #include "offeranswer.h"
  26
  27 #ifdef ANDROID
  28 // Necessary to make it linked
  29 static void for_linker() { eXosip_transport_hook_register(NULL); }
  30 #endif
  31 static bool_t call_failure(Sal *sal, eXosip_event_t *ev);
  32
  33 static void text_received(Sal *sal, eXosip_event_t *ev);
  34
  35 static void masquerade_via(osip_message_t *msg, const char *ip, const char *port);
  36 static bool_t fix_message_contact(SalOp *op, osip_message_t *request,osip_message_t *last_answer, bool_t expire_last_contact);
  37 static void update_contact_from_response(SalOp *op, osip_message_t *response);
  38
  39 void _osip_list_set_empty(osip_list_t *l, void (*freefunc)(void*)){
  40         void *data;
  41         while(!osip_list_eol(l,0)) {
  42                 data=osip_list_get(l,0);
  43                 osip_list_remove(l,0);
  44                 if (data) freefunc(data);
  45         }
  46 }
  47
  48 void sal_get_default_local_ip(Sal *sal, int address_family,char *ip, size_t iplen){
  49         if (eXosip_guess_localip(address_family,ip,iplen)<0){
  50                 /*default to something */
  51                 strncpy(ip,address_family==AF_INET6 ? "::1" : "127.0.0.1",iplen);
  52                 ms_error("Could not find default routable ip address !");
  53         }
  54 }
  55
  56
  57 static SalOp * sal_find_call(Sal *sal, int cid){
  58         const MSList *elem;
  59         SalOp *op;
  60         for(elem=sal->calls;elem!=NULL;elem=elem->next){
  61                 op=(SalOp*)elem->data;
  62                 if (op->cid==cid) return op;
  63         }
  64         return NULL;
  65 }
  66
  67 static void sal_add_call(Sal *sal, SalOp *op){
  68         sal->calls=ms_list_append(sal->calls,op);
  69 }
  70
  71 static void sal_remove_call(Sal *sal, SalOp *op){
  72         sal->calls=ms_list_remove(sal->calls, op);
  73 }
  74
  75 static SalOp * sal_find_register(Sal *sal, int rid){
  76         const MSList *elem;
  77         SalOp *op;
  78         for(elem=sal->registers;elem!=NULL;elem=elem->next){
  79                 op=(SalOp*)elem->data;
  80                 if (op->rid==rid) return op;
  81         }
  82         return NULL;
  83 }
  84
  85 static void sal_add_register(Sal *sal, SalOp *op){
  86         sal->registers=ms_list_append(sal->registers,op);
  87 }
  88
  89 static void sal_remove_register(Sal *sal, int rid){
  90         MSList *elem;
  91         SalOp *op;
  92         for(elem=sal->registers;elem!=NULL;elem=elem->next){
  93                 op=(SalOp*)elem->data;
  94                 if (op->rid==rid) {
  95                         sal->registers=ms_list_remove_link(sal->registers,elem);
  96                         return;
  97                 }
  98         }
  99 }
 100
 101 static SalOp * sal_find_other(Sal *sal, osip_message_t *response){
 102         const MSList *elem;
 103         SalOp *op;
 104         osip_call_id_t *callid=osip_message_get_call_id(response);
 105         if (callid==NULL) {
 106                 ms_error("There is no call-id in this response !");
 107                 return NULL;
 108         }
 109         for(elem=sal->other_transactions;elem!=NULL;elem=elem->next){
 110                 op=(SalOp*)elem->data;
 111                 if (osip_call_id_match(callid,op->call_id)==0) return op;
 112         }
 113         return NULL;
 114 }
 115
 116 void sal_add_other(Sal *sal, SalOp *op, osip_message_t *request){
 117         osip_call_id_t *callid=osip_message_get_call_id(request);
 118         if (callid==NULL) {
 119                 ms_error("There is no call id in the request !");
 120                 return;
 121         }
 122         osip_call_id_clone(callid,&op->call_id);
 123         sal->other_transactions=ms_list_append(sal->other_transactions,op);
 124 }
 125
 126 static void sal_remove_other(Sal *sal, SalOp *op){
 127         sal->other_transactions=ms_list_remove(sal->other_transactions,op);
 128 }
 129
 130
 131 static void sal_add_pending_auth(Sal *sal, SalOp *op){
 132         sal->pending_auths=ms_list_append(sal->pending_auths,op);
 133 }
 134
 135
 136 static void sal_remove_pending_auth(Sal *sal, SalOp *op){
 137         sal->pending_auths=ms_list_remove(sal->pending_auths,op);
 138 }
 139
 140 void sal_exosip_fix_route(SalOp *op){
 141         if (sal_op_get_route(op)!=NULL){
 142                 osip_route_t *rt=NULL;
 143                 osip_uri_param_t *lr_param=NULL;
 144
 145                 osip_route_init(&rt);
 146                 if (osip_route_parse(rt,sal_op_get_route(op))<0){
 147                         ms_warning("Bad route  %s!",sal_op_get_route(op));
 148                         sal_op_set_route(op,NULL);
 149                 }else{
 150                         /* check if the lr parameter is set , if not add it */
 151                         osip_uri_uparam_get_byname(rt->url, "lr", &lr_param);
 152                         if (lr_param==NULL){
 153                                 char *tmproute;
 154                                 osip_uri_uparam_add(rt->url,osip_strdup("lr"),NULL);
 155                                 osip_route_to_str(rt,&tmproute);
 156                                 sal_op_set_route(op,tmproute);
 157                                 osip_free(tmproute);
 158                         }
 159                 }
 160                 osip_route_free(rt);
 161         }
 162 }
 163
 164 SalOp * sal_op_new(Sal *sal){
 165         SalOp *op=ms_new0(SalOp,1);
 166         __sal_op_init(op,sal);
 167         op->cid=op->did=op->tid=op->rid=op->nid=op->sid=-1;
 168         op->result=NULL;
 169         op->supports_session_timers=FALSE;
 170         op->sdp_offering=TRUE;
 171         op->pending_auth=NULL;
 172         op->sdp_answer=NULL;
 173         op->reinvite=FALSE;
 174         op->call_id=NULL;
 175         op->replaces=NULL;
 176         op->referred_by=NULL;
 177         op->masquerade_via=FALSE;
 178         op->auto_answer_asked=FALSE;
 179         op->auth_info=NULL;
 180         op->terminated=FALSE;
 181         return op;
 182 }
 183
 184 bool_t sal_call_autoanswer_asked(SalOp *op)
 185 {
 186         return op->auto_answer_asked;
 187 }
 188
 189 void sal_op_release(SalOp *op){
 190         if (op->sdp_answer)
 191                 sdp_message_free(op->sdp_answer);
 192         if (op->pending_auth)
 193                 eXosip_event_free(op->pending_auth);
 194         if (op->rid!=-1){
 195                 sal_remove_register(op->base.root,op->rid);
 196                 eXosip_register_remove(op->rid);
 197         }
 198         if (op->cid!=-1){
 199                 ms_message("Cleaning cid %i",op->cid);
 200                 sal_remove_call(op->base.root,op);
 201         }
 202         if (op->sid!=-1){
 203                 sal_remove_out_subscribe(op->base.root,op);
 204         }
 205         if (op->nid!=-1){
 206                 sal_remove_in_subscribe(op->base.root,op);
 207                 if (op->call_id)
 208                         osip_call_id_free(op->call_id);
 209                 op->call_id=NULL;
 210         }
 211         if (op->pending_auth){
 212                 sal_remove_pending_auth(op->base.root,op);
 213         }
 214         if (op->result)
 215                 sal_media_description_unref(op->result);
 216         if (op->call_id){
 217                 sal_remove_other(op->base.root,op);
 218                 osip_call_id_free(op->call_id);
 219         }
 220         if (op->replaces){
 221                 ms_free(op->replaces);
 222         }
 223         if (op->referred_by){
 224                 ms_free(op->referred_by);
 225         }
 226         if (op->auth_info) {
 227                 sal_auth_info_delete(op->auth_info);
 228         }
 229         __sal_op_free(op);
 230 }
 231
 232 static void _osip_trace_func(char *fi, int li, osip_trace_level_t level, char *chfr, va_list ap){
 233         int ortp_level=ORTP_DEBUG;
 234         switch(level){
 235                 case OSIP_INFO1:
 236                 case OSIP_INFO2:
 237                 case OSIP_INFO3:
 238                 case OSIP_INFO4:
 239                         ortp_level=ORTP_MESSAGE;
 240                         break;
 241                 case OSIP_WARNING:
 242                         ortp_level=ORTP_WARNING;
 243                         break;
 244                 case OSIP_ERROR:
 245                 case OSIP_BUG:
 246                         ortp_level=ORTP_ERROR;
 247                         break;
 248                 case OSIP_FATAL:
 249                         ortp_level=ORTP_FATAL;
 250                         break;
 251                 case END_TRACE_LEVEL:
 252                         break;
 253         }
 254         if (ortp_log_level_enabled(level)){
 255                 int len=strlen(chfr);
 256                 char *chfrdup=ortp_strdup(chfr);
 257                 /*need to remove endline*/
 258                 if (len>1){
 259                         if (chfrdup[len-1]=='\n')
 260                                 chfrdup[len-1]='\0';
 261                         if (chfrdup[len-2]=='\r')
 262                                 chfrdup[len-2]='\0';
 263                 }
 264                 ortp_logv(ortp_level,chfrdup,ap);
 265                 ortp_free(chfrdup);
 266         }
 267 }
 268
 269
 270 Sal * sal_init(){
 271         static bool_t firsttime=TRUE;
 272         Sal *sal;
 273         if (firsttime){
 274                 osip_trace_initialize_func (OSIP_INFO4,&_osip_trace_func);
 275                 firsttime=FALSE;
 276         }
 277         eXosip_init();
 278         sal=ms_new0(Sal,1);
 279         sal->keepalive_period=30;
 280         sal->double_reg=TRUE;
 281         sal->use_rports=TRUE;
 282         sal->use_101=TRUE;
 283         sal->reuse_authorization=FALSE;
 284         sal->rootCa = 0;
 285         sal->verify_server_certs=TRUE;
 286         sal->expire_old_contact=FALSE;
 287         return sal;
 288 }
 289
 290 void sal_uninit(Sal* sal){
 291         eXosip_quit();
 292         if (sal->rootCa)
 293                 ms_free(sal->rootCa);
 294         ms_free(sal);
 295 }
 296
 297 void sal_set_user_pointer(Sal *sal, void *user_data){
 298         sal->up=user_data;
 299 }
 300
 301 void *sal_get_user_pointer(const Sal *sal){
 302         return sal->up;
 303 }
 304
 305 static void unimplemented_stub(){
 306         ms_warning("Unimplemented SAL callback");
 307 }
 308
 309 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs){
 310         memcpy(&ctx->callbacks,cbs,sizeof(*cbs));
 311         if (ctx->callbacks.call_received==NULL)
 312                 ctx->callbacks.call_received=(SalOnCallReceived)unimplemented_stub;
 313         if (ctx->callbacks.call_ringing==NULL)
 314                 ctx->callbacks.call_ringing=(SalOnCallRinging)unimplemented_stub;
 315         if (ctx->callbacks.call_accepted==NULL)
 316                 ctx->callbacks.call_accepted=(SalOnCallAccepted)unimplemented_stub;
 317         if (ctx->callbacks.call_failure==NULL)
 318                 ctx->callbacks.call_failure=(SalOnCallFailure)unimplemented_stub;
 319         if (ctx->callbacks.call_terminated==NULL)
 320                 ctx->callbacks.call_terminated=(SalOnCallTerminated)unimplemented_stub;
 321         if (ctx->callbacks.call_released==NULL)
 322                 ctx->callbacks.call_released=(SalOnCallReleased)unimplemented_stub;
 323         if (ctx->callbacks.call_updating==NULL)
 324                 ctx->callbacks.call_updating=(SalOnCallUpdating)unimplemented_stub;
 325         if (ctx->callbacks.auth_requested==NULL)
 326                 ctx->callbacks.auth_requested=(SalOnAuthRequested)unimplemented_stub;
 327         if (ctx->callbacks.auth_success==NULL)
 328                 ctx->callbacks.auth_success=(SalOnAuthSuccess)unimplemented_stub;
 329         if (ctx->callbacks.register_success==NULL)
 330                 ctx->callbacks.register_success=(SalOnRegisterSuccess)unimplemented_stub;
 331         if (ctx->callbacks.register_failure==NULL)
 332                 ctx->callbacks.register_failure=(SalOnRegisterFailure)unimplemented_stub;
 333         if (ctx->callbacks.dtmf_received==NULL)
 334                 ctx->callbacks.dtmf_received=(SalOnDtmfReceived)unimplemented_stub;
 335         if (ctx->callbacks.notify==NULL)
 336                 ctx->callbacks.notify=(SalOnNotify)unimplemented_stub;
 337         if (ctx->callbacks.notify_presence==NULL)
 338                 ctx->callbacks.notify_presence=(SalOnNotifyPresence)unimplemented_stub;
 339         if (ctx->callbacks.subscribe_received==NULL)
 340                 ctx->callbacks.subscribe_received=(SalOnSubscribeReceived)unimplemented_stub;
 341         if (ctx->callbacks.text_received==NULL)
 342                 ctx->callbacks.text_received=(SalOnTextReceived)unimplemented_stub;
 343         if (ctx->callbacks.ping_reply==NULL)
 344                 ctx->callbacks.ping_reply=(SalOnPingReply)unimplemented_stub;
 345 }
 346
 347 int sal_unlisten_ports(Sal *ctx){
 348         if (ctx->running){
 349                 eXosip_quit();
 350                 eXosip_init();
 351                 ctx->running=FALSE;
 352         }
 353         return 0;
 354 }
 355
 356 int sal_reset_transports(Sal *ctx){
 357 #ifdef HAVE_EXOSIP_RESET_TRANSPORTS
 358         if (ctx->running){
 359                 ms_message("Exosip transports reset.");
 360                 eXosip_reset_transports();
 361         }
 362         return 0;
 363 #else
 364         ms_warning("sal_reset_transports() not implemented in this version.");
 365         return -1;
 366 #endif
 367 }
 368
 369
 370 static void set_tls_options(Sal *ctx){
 371         if (ctx->rootCa) {
 372                 eXosip_tls_ctx_t tlsCtx;
 373                 memset(&tlsCtx, 0, sizeof(tlsCtx));
 374                 snprintf(tlsCtx.root_ca_cert, sizeof(tlsCtx.client.cert), "%s", ctx->rootCa);
 375                 eXosip_set_tls_ctx(&tlsCtx);
 376         }
 377 #ifdef HAVE_EXOSIP_TLS_VERIFY_CERTIFICATE
 378         eXosip_tls_verify_certificate(ctx->verify_server_certs);
 379 #endif
 380 }
 381
 382 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure){
 383         int err;
 384         bool_t ipv6;
 385         int proto=IPPROTO_UDP;
 386         int keepalive = ctx->keepalive_period;
 387
 388         switch (tr) {
 389         case SalTransportUDP:
 390                 proto=IPPROTO_UDP;
 391                 eXosip_set_option (EXOSIP_OPT_UDP_KEEP_ALIVE, &keepalive);
 392                 break;
 393         case SalTransportTCP:
 394         case SalTransportTLS:
 395                 proto= IPPROTO_TCP;
 396                         keepalive=-1;
 397                 eXosip_set_option (EXOSIP_OPT_UDP_KEEP_ALIVE,&keepalive);
 398                 set_tls_options(ctx);
 399                 break;
 400         default:
 401                 ms_warning("unexpected proto, using datagram");
 402         }
 403         /*see if it looks like an IPv6 address*/
 404         int use_rports = ctx->use_rports; // Copy char to int to avoid bad alignment
 405         eXosip_set_option(EXOSIP_OPT_USE_RPORT,&use_rports);
 406         int dont_use_101 = !ctx->use_101; // Copy char to int to avoid bad alignment
 407         eXosip_set_option(EXOSIP_OPT_DONT_SEND_101,&dont_use_101);
 408
 409         ipv6=strchr(addr,':')!=NULL;
 410         eXosip_enable_ipv6(ipv6);
 411
 412         if (is_secure && tr == SalTransportUDP){
 413                 ms_fatal("SIP over DTLS is not supported yet.");
 414                 return -1;
 415         }
 416         err=eXosip_listen_addr(proto, addr, port, ipv6 ?  PF_INET6 : PF_INET, is_secure);
 417         ctx->running=TRUE;
 418         return err;
 419 }
 420
 421 ortp_socket_t sal_get_socket(Sal *ctx){
 422 #ifdef HAVE_EXOSIP_GET_SOCKET
 423         return eXosip_get_socket(IPPROTO_UDP);
 424 #else
 425         ms_warning("Sorry, eXosip does not have eXosip_get_socket() method");
 426         return -1;
 427 #endif
 428 }
 429
 430 void sal_set_user_agent(Sal *ctx, const char *user_agent){
 431         eXosip_set_user_agent(user_agent);
 432 }
 433
 434 void sal_use_session_timers(Sal *ctx, int expires){
 435         ctx->session_expires=expires;
 436 }
 437
 438 void sal_use_one_matching_codec_policy(Sal *ctx, bool_t one_matching_codec){
 439         ctx->one_matching_codec=one_matching_codec;
 440 }
 441
 442 MSList *sal_get_pending_auths(Sal *sal){
 443         return ms_list_copy(sal->pending_auths);
 444 }
 445
 446 void sal_use_double_registrations(Sal *ctx, bool_t enabled){
 447         ctx->double_reg=enabled;
 448 }
 449
 450 void sal_expire_old_registration_contacts(Sal *ctx, bool_t enabled){
 451         ctx->expire_old_contact=enabled;
 452 }
 453
 454 void sal_use_rport(Sal *ctx, bool_t use_rports){
 455         ctx->use_rports=use_rports;
 456 }
 457 void sal_use_101(Sal *ctx, bool_t use_101){
 458         ctx->use_101=use_101;
 459 }
 460
 461 void sal_set_root_ca(Sal* ctx, const char* rootCa) {
 462         if (ctx->rootCa)
 463                 ms_free(ctx->rootCa);
 464         ctx->rootCa = ms_strdup(rootCa);
 465 }
 466
 467 void sal_verify_server_certificates(Sal *ctx, bool_t verify){
 468         ctx->verify_server_certs=verify;
 469 #ifdef HAVE_EXOSIP_TLS_VERIFY_CERTIFICATE
 470         eXosip_tls_verify_certificate(verify);
 471 #endif
 472 }
 473
 474 static int extract_received_rport(osip_message_t *msg, const char **received, int *rportval,SalTransport* transport){
 475         osip_via_t *via=NULL;
 476         osip_generic_param_t *param=NULL;
 477         const char *rport=NULL;
 478
 479         *rportval=5060;
 480         *received=NULL;
 481         osip_message_get_via(msg,0,&via);
 482         if (!via) {
 483                 ms_warning("extract_received_rport(): no via.");
 484                 return -1;
 485         }
 486
 487         *transport = sal_transport_parse(via->protocol);
 488
 489         if (via->port && via->port[0]!='\0')
 490                 *rportval=atoi(via->port);
 491
 492         osip_via_param_get_byname(via,"rport",&param);
 493         if (param) {
 494                 rport=param->gvalue;
 495                 if (rport && rport[0]!='\0') *rportval=atoi(rport);
 496                 *received=via->host;
 497         }
 498         param=NULL;
 499         osip_via_param_get_byname(via,"received",&param);
 500         if (param) *received=param->gvalue;
 501
 502         if (rport==NULL && *received==NULL){
 503                 ms_warning("extract_received_rport(): no rport and no received parameters.");
 504                 return -1;
 505         }
 506         return 0;
 507 }
 508
 509 static void set_sdp(osip_message_t *sip,sdp_message_t *msg){
 510         int sdplen;
 511         char clen[10];
 512         char *sdp=NULL;
 513         sdp_message_to_str(msg,&sdp);
 514         sdplen=strlen(sdp);
 515         snprintf(clen,sizeof(clen),"%i",sdplen);
 516         osip_message_set_body(sip,sdp,sdplen);
 517         osip_message_set_content_type(sip,"application/sdp");
 518         osip_message_set_content_length(sip,clen);
 519         osip_free(sdp);
 520 }
 521
 522 static void set_sdp_from_desc(osip_message_t *sip, const SalMediaDescription *desc){
 523         sdp_message_t *msg=media_description_to_sdp(desc);
 524         if (msg==NULL) {
 525                 ms_error("Fail to print sdp message !");
 526                 return;
 527         }
 528         set_sdp(sip,msg);
 529         sdp_message_free(msg);
 530 }
 531
 532 static void sdp_process(SalOp *h){
 533         ms_message("Doing SDP offer/answer process of type %s",h->sdp_offering ? "outgoing" : "incoming");
 534         if (h->result){
 535                 sal_media_description_unref(h->result);
 536         }
 537         h->result=sal_media_description_new();
 538         if (h->sdp_offering){
 539                 offer_answer_initiate_outgoing(h->base.local_media,h->base.remote_media,h->result);
 540         }else{
 541                 int i;
 542                 if (h->sdp_answer){
 543                         sdp_message_free(h->sdp_answer);
 544                 }
 545                 offer_answer_initiate_incoming(h->base.local_media,h->base.remote_media,h->result,h->base.root->one_matching_codec);
 546                 h->sdp_answer=media_description_to_sdp(h->result);
 547                 /*once we have generated the SDP answer, we modify the result description for processing by the upper layer.
 548                  It should contains media parameters constraint from the remote offer, not our response*/
 549                 strcpy(h->result->addr,h->base.remote_media->addr);
 550                 h->result->bandwidth=h->base.remote_media->bandwidth;
 551
 552                 for(i=0;i<h->result->nstreams;++i){
 553                         if (h->result->streams[i].rtp_port>0){
 554                                 strcpy(h->result->streams[i].rtp_addr,h->base.remote_media->streams[i].rtp_addr);
 555                                 strcpy(h->result->streams[i].rtcp_addr,h->base.remote_media->streams[i].rtcp_addr);
 556                                 h->result->streams[i].ptime=h->base.remote_media->streams[i].ptime;
 557                                 h->result->streams[i].bandwidth=h->base.remote_media->streams[i].bandwidth;
 558                                 h->result->streams[i].rtp_port=h->base.remote_media->streams[i].rtp_port;
 559                                 h->result->streams[i].rtcp_port=h->base.remote_media->streams[i].rtcp_port;
 560
 561                                 if (h->result->streams[i].proto == SalProtoRtpSavp) {
 562                                         h->result->streams[i].crypto[0] = h->base.remote_media->streams[i].crypto[0];
 563                                 }
 564                         }
 565                 }
 566         }
 567
 568 }
 569
 570 int sal_call_is_offerer(const SalOp *h){
 571         return h->sdp_offering;
 572 }
 573
 574 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc){
 575         if (desc)
 576                 sal_media_description_ref(desc);
 577         if (h->base.local_media)
 578                 sal_media_description_unref(h->base.local_media);
 579         h->base.local_media=desc;
 580         if (h->base.remote_media){
 581                 /*case of an incoming call where we modify the local capabilities between the time
 582                  * the call is ringing and it is accepted (for example if you want to accept without video*/
 583                 /*reset the sdp answer so that it is computed again*/
 584                 if (h->sdp_answer){
 585                         sdp_message_free(h->sdp_answer);
 586                         h->sdp_answer=NULL;
 587                 }
 588         }
 589         return 0;
 590 }
 591
 592 int sal_call(SalOp *h, const char *from, const char *to){
 593         int err;
 594         const char *route;
 595         osip_message_t *invite=NULL;
 596         sal_op_set_from(h,from);
 597         sal_op_set_to(h,to);
 598         sal_exosip_fix_route(h);
 599
 600         h->terminated = FALSE;
 601
 602         route = sal_op_get_route(h);
 603         err=eXosip_call_build_initial_invite(&invite,to,from,route,"Phone call");
 604         if (err!=0){
 605                 ms_error("Could not create call. Error %d (from=%s to=%s route=%s)",
 606                                 err, from, to, route);
 607                 return -1;
 608         }
 609         osip_message_set_allow(invite, "INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO");
 610         if (h->base.contact){
 611                 _osip_list_set_empty(&invite->contacts,(void (*)(void*))osip_contact_free);
 612                 osip_message_set_contact(invite,h->base.contact);
 613         }
 614         if (h->base.root->session_expires!=0){
 615                 osip_message_set_header(invite, "Session-expires", "200");
 616                 osip_message_set_supported(invite, "timer");
 617         }
 618         if (h->base.local_media){
 619                 h->sdp_offering=TRUE;
 620                 set_sdp_from_desc(invite,h->base.local_media);
 621         }else h->sdp_offering=FALSE;
 622         if (h->replaces){
 623                 osip_message_set_header(invite,"Replaces",h->replaces);
 624                 if (h->referred_by)
 625                         osip_message_set_header(invite,"Referred-By",h->referred_by);
 626         }
 627
 628         eXosip_lock();
 629         err=eXosip_call_send_initial_invite(invite);
 630         eXosip_unlock();
 631         h->cid=err;
 632         if (err<0){
 633                 ms_error("Fail to send invite ! Error code %d", err);
 634                 return -1;
 635         }else{
 636                 sal_add_call(h->base.root,h);
 637         }
 638         return 0;
 639 }
 640
 641 int sal_call_notify_ringing(SalOp *h, bool_t early_media){
 642         osip_message_t *msg;
 643
 644         /*if early media send also 180 and 183 */
 645         if (early_media){
 646                 msg=NULL;
 647                 eXosip_lock();
 648                 eXosip_call_build_answer(h->tid,183,&msg);
 649                 if (msg){
 650                         sdp_process(h);
 651                         if (h->sdp_answer){
 652                                 set_sdp(msg,h->sdp_answer);
 653                                 sdp_message_free(h->sdp_answer);
 654                                 h->sdp_answer=NULL;
 655                         }
 656                         eXosip_call_send_answer(h->tid,183,msg);
 657                 }
 658                 eXosip_unlock();
 659         }else{
 660                 eXosip_lock();
 661                 eXosip_call_send_answer(h->tid,180,NULL);
 662                 eXosip_unlock();
 663         }
 664         return 0;
 665 }
 666
 667 int sal_call_accept(SalOp * h){
 668         osip_message_t *msg;
 669         const char *contact=sal_op_get_contact(h);
 670         /* sends a 200 OK */
 671         int err=eXosip_call_build_answer(h->tid,200,&msg);
 672         if (err<0 || msg==NULL){
 673                 ms_error("Fail to build answer for call: err=%i",err);
 674                 return -1;
 675         }
 676         if (h->base.root->session_expires!=0){
 677                 if (h->supports_session_timers) osip_message_set_supported(msg, "timer");
 678         }
 679
 680         if (contact) {
 681                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 682                 osip_message_set_contact(msg,contact);
 683         }
 684
 685         if (h->base.local_media){
 686                 /*this is the case where we received an invite without SDP*/
 687                 if (h->sdp_offering) {
 688                         set_sdp_from_desc(msg,h->base.local_media);
 689                 }else{
 690                         if (h->sdp_answer==NULL) sdp_process(h);
 691                         if (h->sdp_answer){
 692                                 set_sdp(msg,h->sdp_answer);
 693                                 sdp_message_free(h->sdp_answer);
 694                                 h->sdp_answer=NULL;
 695                         }
 696                 }
 697         }else{
 698                 ms_error("You are accepting a call but not defined any media capabilities !");
 699         }
 700         eXosip_call_send_answer(h->tid,200,msg);
 701         return 0;
 702 }
 703
 704 int sal_call_decline(SalOp *h, SalReason reason, const char *redirect){
 705         if (reason==SalReasonBusy){
 706                 eXosip_lock();
 707                 eXosip_call_send_answer(h->tid,486,NULL);
 708                 eXosip_unlock();
 709         }
 710         else if (reason==SalReasonTemporarilyUnavailable){
 711                 eXosip_lock();
 712                 eXosip_call_send_answer(h->tid,480,NULL);
 713                 eXosip_unlock();
 714         }else if (reason==SalReasonDoNotDisturb){
 715                 eXosip_lock();
 716                 eXosip_call_send_answer(h->tid,600,NULL);
 717                 eXosip_unlock();
 718         }else if (reason==SalReasonMedia){
 719                 eXosip_lock();
 720                 eXosip_call_send_answer(h->tid,415,NULL);
 721                 eXosip_unlock();
 722         }else if (redirect!=NULL && reason==SalReasonRedirect){
 723                 osip_message_t *msg;
 724                 int code;
 725                 if (strstr(redirect,"sip:")!=0) code=302;
 726                 else code=380;
 727                 eXosip_lock();
 728                 eXosip_call_build_answer(h->tid,code,&msg);
 729                 osip_message_set_contact(msg,redirect);
 730                 eXosip_call_send_answer(h->tid,code,msg);
 731                 eXosip_unlock();
 732         }else sal_call_terminate(h);
 733         return 0;
 734 }
 735
 736 SalMediaDescription * sal_call_get_remote_media_description(SalOp *h){
 737         return h->base.remote_media;
 738 }
 739
 740 SalMediaDescription * sal_call_get_final_media_description(SalOp *h){
 741         if (h->base.local_media && h->base.remote_media && !h->result){
 742                 sdp_process(h);
 743         }
 744         return h->result;
 745 }
 746
 747 int sal_call_set_referer(SalOp *h, SalOp *refered_call){
 748         if (refered_call->replaces)
 749                 h->replaces=ms_strdup(refered_call->replaces);
 750         if (refered_call->referred_by)
 751                 h->referred_by=ms_strdup(refered_call->referred_by);
 752         return 0;
 753 }
 754
 755 static int send_notify_for_refer(int did, const char *sipfrag){
 756         osip_message_t *msg;
 757         eXosip_lock();
 758         eXosip_call_build_notify(did,EXOSIP_SUBCRSTATE_ACTIVE,&msg);
 759         if (msg==NULL){
 760                 eXosip_unlock();
 761                 ms_warning("Could not build NOTIFY for refer.");
 762                 return -1;
 763         }
 764         osip_message_set_content_type(msg,"message/sipfrag");
 765         osip_message_set_header(msg,"Event","refer");
 766         osip_message_set_body(msg,sipfrag,strlen(sipfrag));
 767         eXosip_call_send_request(did,msg);
 768         eXosip_unlock();
 769         return 0;
 770 }
 771
 772 /* currently only support to notify trying and 200Ok*/
 773 int sal_call_notify_refer_state(SalOp *h, SalOp *newcall){
 774         if (newcall==NULL){
 775                 /* in progress*/
 776                 send_notify_for_refer(h->did,"SIP/2.0 100 Trying\r\n");
 777         }
 778         else if (newcall->cid!=-1){
 779                 if (newcall->did==-1){
 780                         /* not yet established*/
 781                         if (!newcall->terminated){
 782                                 /* in progress*/
 783                                 send_notify_for_refer(h->did,"SIP/2.0 100 Trying\r\n");
 784                         }
 785                 }else{
 786                         if (!newcall->terminated){
 787                                 if (send_notify_for_refer(h->did,"SIP/2.0 200 Ok\r\n")==-1){
 788                                         /* we need previous notify transaction to complete, so buffer the request for later*/
 789                                         h->sipfrag_pending="SIP/2.0 200 Ok\r\n";
 790                                 }
 791                         }
 792                 }
 793         }
 794         return 0;
 795 }
 796
 797 int sal_ping(SalOp *op, const char *from, const char *to){
 798         osip_message_t *options=NULL;
 799
 800         sal_op_set_from(op,from);
 801         sal_op_set_to(op,to);
 802         sal_exosip_fix_route(op);
 803
 804         eXosip_options_build_request (&options, sal_op_get_to(op),
 805                         sal_op_get_from(op),sal_op_get_route(op));
 806         if (options){
 807                 if (op->base.root->session_expires!=0){
 808                         osip_message_set_header(options, "Session-expires", "200");
 809                         osip_message_set_supported(options, "timer");
 810                 }
 811                 sal_add_other(sal_op_get_sal(op),op,options);
 812                 return eXosip_options_send_request(options);
 813         }
 814         return -1;
 815 }
 816
 817 int sal_call_refer(SalOp *h, const char *refer_to){
 818         osip_message_t *msg=NULL;
 819         int err=0;
 820         eXosip_lock();
 821         eXosip_call_build_refer(h->did,refer_to, &msg);
 822         if (msg) err=eXosip_call_send_request(h->did, msg);
 823         else err=-1;
 824         eXosip_unlock();
 825         return err;
 826 }
 827
 828 int sal_call_refer_with_replaces(SalOp *h, SalOp *other_call_h){
 829         osip_message_t *msg=NULL;
 830         char referto[256]={0};
 831         int err=0;
 832         eXosip_lock();
 833         if (eXosip_call_get_referto(other_call_h->did,referto,sizeof(referto)-1)!=0){
 834                 ms_error("eXosip_call_get_referto() failed for did=%i",other_call_h->did);
 835                 eXosip_unlock();
 836                 return -1;
 837         }
 838         eXosip_call_build_refer(h->did,referto, &msg);
 839         osip_message_set_header(msg,"Referred-By",h->base.from);
 840         if (msg) err=eXosip_call_send_request(h->did, msg);
 841         else err=-1;
 842         eXosip_unlock();
 843         return err;
 844 }
 845
 846 SalOp *sal_call_get_replaces(SalOp *h){
 847         if (h!=NULL && h->replaces!=NULL){
 848                 int cid;
 849                 eXosip_lock();
 850                 cid=eXosip_call_find_by_replaces(h->replaces);
 851                 eXosip_unlock();
 852                 if (cid>0){
 853                         SalOp *ret=sal_find_call(h->base.root,cid);
 854                         return ret;
 855                 }
 856         }
 857         return NULL;
 858 }
 859
 860 int sal_call_send_dtmf(SalOp *h, char dtmf){
 861         osip_message_t *msg=NULL;
 862         char dtmf_body[128];
 863         char clen[10];
 864
 865         eXosip_lock();
 866         eXosip_call_build_info(h->did,&msg);
 867         if (msg){
 868                 snprintf(dtmf_body, sizeof(dtmf_body), "Signal=%c\r\nDuration=250\r\n", dtmf);
 869                 osip_message_set_body(msg,dtmf_body,strlen(dtmf_body));
 870                 osip_message_set_content_type(msg,"application/dtmf-relay");
 871                 snprintf(clen,sizeof(clen),"%lu",(unsigned long)strlen(dtmf_body));
 872                 osip_message_set_content_length(msg,clen);
 873                 eXosip_call_send_request(h->did,msg);
 874         }
 875         eXosip_unlock();
 876         return 0;
 877 }
 878
 879 static void push_auth_to_exosip(const SalAuthInfo *info){
 880         const char *userid;
 881         if (info->userid==NULL || info->userid[0]=='\0') userid=info->username;
 882         else userid=info->userid;
 883         ms_message("Authentication info for username [%s], id[%s], realm [%s] added to eXosip", info->username,userid, info->realm);
 884         eXosip_add_authentication_info (info->username,userid,
 885                                   info->password, NULL,info->realm);
 886 }
 887 /*
 888  * Just for symmetry ;-)
 889  */
 890 static void pop_auth_from_exosip() {
 891         eXosip_clear_authentication_info();
 892 }
 893
 894 int sal_call_terminate(SalOp *h){
 895         int err;
 896         if (h == NULL) return -1;
 897         if (h->auth_info) push_auth_to_exosip(h->auth_info);
 898         eXosip_lock();
 899         err=eXosip_call_terminate(h->cid,h->did);
 900         eXosip_unlock();
 901         if (!h->base.root->reuse_authorization) pop_auth_from_exosip();
 902         if (err!=0){
 903                 ms_warning("Exosip could not terminate the call: cid=%i did=%i", h->cid,h->did);
 904         }
 905         h->terminated=TRUE;
 906         return 0;
 907 }
 908
 909 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info){
 910         if (h->terminated) return;
 911     if (h->pending_auth){
 912                 push_auth_to_exosip(info);
 913
 914         /*FIXME exosip does not take into account this update register message*/
 915         /*
 916         if (fix_message_contact(h, h->pending_auth->request,h->pending_auth->response)) {
 917
 918         };
 919         */
 920                 update_contact_from_response(h,h->pending_auth->response);
 921                 eXosip_lock();
 922                 eXosip_default_action(h->pending_auth);
 923                 eXosip_unlock();
 924                 ms_message("eXosip_default_action() done");
 925                 if (!h->base.root->reuse_authorization) pop_auth_from_exosip();
 926
 927                 if (h->auth_info) sal_auth_info_delete(h->auth_info); /*if already exist*/
 928                 h->auth_info=sal_auth_info_clone(info); /*store auth info for subsequent request*/
 929         }
 930 }
 931 void sal_op_cancel_authentication(SalOp *h) {
 932         if (h->rid >0) {
 933                 sal_op_get_sal(h)->callbacks.register_failure(h,SalErrorFailure, SalReasonForbidden,_("Authentication failure"));
 934         } else if (h->cid >0) {
 935                 sal_op_get_sal(h)->callbacks.call_failure(h,SalErrorFailure, SalReasonForbidden,_("Authentication failure"),0);
 936         } else {
 937                 ms_warning("Auth failure not handled");
 938         }
 939
 940 }
 941 static void set_network_origin(SalOp *op, osip_message_t *req){
 942         const char *received=NULL;
 943         int rport=5060;
 944         char origin[64]={0};
 945     SalTransport transport;
 946         if (extract_received_rport(req,&received,&rport,&transport)!=0){
 947                 osip_via_t *via=NULL;
 948                 char *tmp;
 949                 osip_message_get_via(req,0,&via);
 950                 received=osip_via_get_host(via);
 951                 tmp=osip_via_get_port(via);
 952                 if (tmp) rport=atoi(tmp);
 953         }
 954     if (transport != SalTransportUDP) {
 955         snprintf(origin,sizeof(origin)-1,"sip:%s:%i",received,rport);
 956     } else {
 957        snprintf(origin,sizeof(origin)-1,"sip:%s:%i;transport=%s",received,rport,sal_transport_to_string(transport));
 958     }
 959         __sal_op_set_network_origin(op,origin);
 960 }
 961
 962 static void set_remote_ua(SalOp* op, osip_message_t *req){
 963         if (op->base.remote_ua==NULL){
 964                 osip_header_t *h=NULL;
 965                 osip_message_get_user_agent(req,0,&h);
 966                 if (h){
 967                         op->base.remote_ua=ms_strdup(h->hvalue);
 968                 }
 969         }
 970 }
 971
 972 static void set_replaces(SalOp *op, osip_message_t *req){
 973         osip_header_t *h=NULL;
 974
 975         if (op->replaces){
 976                 ms_free(op->replaces);
 977                 op->replaces=NULL;
 978         }
 979         osip_message_header_get_byname(req,"replaces",0,&h);
 980         if (h){
 981                 if (h->hvalue && h->hvalue[0]!='\0'){
 982                         op->replaces=ms_strdup(h->hvalue);
 983                 }
 984         }
 985 }
 986
 987 static SalOp *find_op(Sal *sal, eXosip_event_t *ev){
 988         if (ev->cid>0){
 989                 return sal_find_call(sal,ev->cid);
 990         }
 991         if (ev->rid>0){
 992                 return sal_find_register(sal,ev->rid);
 993         }
 994         if (ev->sid>0){
 995                 return sal_find_out_subscribe(sal,ev->sid);
 996         }
 997         if (ev->nid>0){
 998                 return sal_find_in_subscribe(sal,ev->nid);
 999         }
1000         if (ev->response) return sal_find_other(sal,ev->response);
1001         return NULL;
1002 }
1003
1004 static void inc_new_call(Sal *sal, eXosip_event_t *ev){
1005         SalOp *op=sal_op_new(sal);
1006         osip_from_t *from,*to;
1007         osip_call_info_t *call_info;
1008         char *tmp;
1009         sdp_message_t *sdp=eXosip_get_sdp_info(ev->request);
1010
1011         set_network_origin(op,ev->request);
1012         set_remote_ua(op,ev->request);
1013         set_replaces(op,ev->request);
1014
1015         if (sdp){
1016                 op->sdp_offering=FALSE;
1017                 op->base.remote_media=sal_media_description_new();
1018                 sdp_to_media_description(sdp,op->base.remote_media);
1019                 sdp_message_free(sdp);
1020         }else op->sdp_offering=TRUE;
1021
1022         from=osip_message_get_from(ev->request);
1023         to=osip_message_get_to(ev->request);
1024         osip_from_to_str(from,&tmp);
1025         sal_op_set_from(op,tmp);
1026         osip_free(tmp);
1027         osip_from_to_str(to,&tmp);
1028         sal_op_set_to(op,tmp);
1029         osip_free(tmp);
1030
1031         osip_message_get_call_info(ev->request,0,&call_info);
1032         if(call_info)
1033         {
1034                 osip_call_info_to_str(call_info,&tmp);
1035                 if( strstr(tmp,"answer-after=") != NULL)
1036                 {
1037                         op->auto_answer_asked=TRUE;
1038                         ms_message("The caller asked to automatically answer the call(Emergency?)\n");
1039                 }
1040                 osip_free(tmp);
1041         }
1042
1043         op->tid=ev->tid;
1044         op->cid=ev->cid;
1045         op->did=ev->did;
1046
1047         sal_add_call(op->base.root,op);
1048         sal->callbacks.call_received(op);
1049 }
1050
1051 static void handle_reinvite(Sal *sal,  eXosip_event_t *ev){
1052         SalOp *op=find_op(sal,ev);
1053         sdp_message_t *sdp;
1054
1055         if (op==NULL) {
1056                 ms_warning("Reinvite for non-existing operation !");
1057                 return;
1058         }
1059         op->reinvite=TRUE;
1060         op->tid=ev->tid;
1061         sdp=eXosip_get_sdp_info(ev->request);
1062         if (op->base.remote_media){
1063                 sal_media_description_unref(op->base.remote_media);
1064                 op->base.remote_media=NULL;
1065         }
1066         if (op->result){
1067                 sal_media_description_unref(op->result);
1068                 op->result=NULL;
1069         }
1070         if (sdp){
1071                 op->sdp_offering=FALSE;
1072                 op->base.remote_media=sal_media_description_new();
1073                 sdp_to_media_description(sdp,op->base.remote_media);
1074                 sdp_message_free(sdp);
1075
1076         }else {
1077                 op->sdp_offering=TRUE;
1078         }
1079         sal->callbacks.call_updating(op);
1080 }
1081
1082 static void handle_ack(Sal *sal,  eXosip_event_t *ev){
1083         SalOp *op=find_op(sal,ev);
1084         sdp_message_t *sdp;
1085
1086         if (op==NULL) {
1087                 ms_warning("ack for non-existing call !");
1088                 return;
1089         }
1090         if (op->terminated) {
1091                 ms_warning("ack for terminated call, ignoring");
1092                 return;
1093         }
1094
1095         if (op->sdp_offering){
1096                 sdp=eXosip_get_sdp_info(ev->ack);
1097                 if (sdp){
1098                         if (op->base.remote_media)
1099                                 sal_media_description_unref(op->base.remote_media);
1100                         op->base.remote_media=sal_media_description_new();
1101                         sdp_to_media_description(sdp,op->base.remote_media);
1102                         sdp_process(op);
1103                         sdp_message_free(sdp);
1104                 }
1105         }
1106         if (op->reinvite){
1107                 op->reinvite=FALSE;
1108         }
1109         sal->callbacks.call_ack(op);
1110 }
1111
1112 static void update_contact_from_response(SalOp *op, osip_message_t *response){
1113         const char *received;
1114         int rport;
1115         SalTransport transport;
1116         if (extract_received_rport(response,&received,&rport,&transport)==0){
1117                 const char *contact=sal_op_get_contact(op);
1118                 if (!contact){
1119                         /*no contact given yet, use from instead*/
1120                         contact=sal_op_get_from(op);
1121                 }
1122                 if (contact){
1123                         SalAddress *addr=sal_address_new(contact);
1124                         char *tmp;
1125                         sal_address_set_domain(addr,received);
1126                         sal_address_set_port_int(addr,rport);
1127                         if (transport!=SalTransportUDP)
1128                                 sal_address_set_transport(addr,transport);
1129                         tmp=sal_address_as_string(addr);
1130                         ms_message("Contact address updated to %s",tmp);
1131                         sal_op_set_contact(op,tmp);
1132                         sal_address_destroy(addr);
1133                         ms_free(tmp);
1134                 }
1135         }
1136 }
1137
1138 static int call_proceeding(Sal *sal, eXosip_event_t *ev){
1139         SalOp *op=find_op(sal,ev);
1140
1141         if (op==NULL || op->terminated==TRUE) {
1142                 ms_warning("This call has been canceled.");
1143                 eXosip_lock();
1144                 eXosip_call_terminate(ev->cid,ev->did);
1145                 eXosip_unlock();
1146                 return -1;
1147         }
1148         if (ev->did>0)
1149                 op->did=ev->did;
1150         op->tid=ev->tid;
1151
1152         /* update contact if received and rport are set by the server
1153          note: will only be used by remote for next INVITE, if any...*/
1154         update_contact_from_response(op,ev->response);
1155         return 0;
1156 }
1157
1158 static void call_ringing(Sal *sal, eXosip_event_t *ev){
1159         sdp_message_t *sdp;
1160         SalOp *op=find_op(sal,ev);
1161         if (call_proceeding(sal, ev)==-1) return;
1162
1163         set_remote_ua(op,ev->response);
1164         sdp=eXosip_get_sdp_info(ev->response);
1165         if (sdp){
1166                 op->base.remote_media=sal_media_description_new();
1167                 sdp_to_media_description(sdp,op->base.remote_media);
1168                 sdp_message_free(sdp);
1169                 if (op->base.local_media) sdp_process(op);
1170         }
1171         sal->callbacks.call_ringing(op);
1172 }
1173
1174 static void call_accepted(Sal *sal, eXosip_event_t *ev){
1175         sdp_message_t *sdp;
1176         osip_message_t *msg=NULL;
1177         SalOp *op=find_op(sal,ev);
1178         const char *contact;
1179
1180         if (op==NULL || op->terminated==TRUE) {
1181                 ms_warning("This call has been already terminated.");
1182                 eXosip_lock();
1183                 eXosip_call_terminate(ev->cid,ev->did);
1184                 eXosip_unlock();
1185                 return ;
1186         }
1187
1188         op->did=ev->did;
1189         set_remote_ua(op,ev->response);
1190
1191         sdp=eXosip_get_sdp_info(ev->response);
1192         if (sdp){
1193                 op->base.remote_media=sal_media_description_new();
1194                 sdp_to_media_description(sdp,op->base.remote_media);
1195                 sdp_message_free(sdp);
1196                 if (op->base.local_media) sdp_process(op);
1197         }
1198         eXosip_call_build_ack(ev->did,&msg);
1199         if (msg==NULL) {
1200                 ms_warning("This call has been already terminated.");
1201                 eXosip_lock();
1202                 eXosip_call_terminate(ev->cid,ev->did);
1203                 eXosip_unlock();
1204                 return ;
1205         }
1206         contact=sal_op_get_contact(op);
1207         if (contact) {
1208                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
1209                 osip_message_set_contact(msg,contact);
1210         }
1211         if (op->sdp_answer){
1212                 set_sdp(msg,op->sdp_answer);
1213                 sdp_message_free(op->sdp_answer);
1214                 op->sdp_answer=NULL;
1215         }
1216         eXosip_call_send_ack(ev->did,msg);
1217         sal->callbacks.call_accepted(op);
1218 }
1219
1220 static void call_terminated(Sal *sal, eXosip_event_t *ev){
1221         char *from=NULL;
1222         SalOp *op=find_op(sal,ev);
1223         if (op==NULL){
1224                 ms_warning("Call terminated for already closed call ?");
1225                 return;
1226         }
1227         if (ev->request){
1228                 osip_from_to_str(ev->request->from,&from);
1229         }
1230         sal->callbacks.call_terminated(op,from!=NULL ? from : sal_op_get_from(op));
1231         if (from) osip_free(from);
1232         op->terminated=TRUE;
1233 }
1234
1235 static void call_released(Sal *sal, eXosip_event_t *ev){
1236         SalOp *op=find_op(sal,ev);
1237         if (op==NULL){
1238                 ms_warning("No op associated to this call_released()");
1239                 return;
1240         }
1241         if (!op->terminated){
1242                 /* no response received so far */
1243                 call_failure(sal,ev);
1244         }
1245         sal->callbacks.call_released(op);
1246 }
1247
1248 static int get_auth_data_from_response(osip_message_t *resp, const char **realm, const char **username){
1249         const char *prx_realm=NULL,*www_realm=NULL;
1250         osip_proxy_authenticate_t *prx_auth;
1251         osip_www_authenticate_t *www_auth;
1252
1253         *username=osip_uri_get_username(resp->from->url);
1254         prx_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->proxy_authenticates,0);
1255         www_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->www_authenticates,0);
1256         if (prx_auth!=NULL)
1257                 prx_realm=osip_proxy_authenticate_get_realm(prx_auth);
1258         if (www_auth!=NULL)
1259                 www_realm=osip_www_authenticate_get_realm(www_auth);
1260
1261         if (prx_realm){
1262                 *realm=prx_realm;
1263         }else if (www_realm){
1264                 *realm=www_realm;
1265         }else{
1266                 return -1;
1267         }
1268         return 0;
1269 }
1270
1271 static int get_auth_data_from_request(osip_message_t *msg, const char **realm, const char **username){
1272         osip_authorization_t *auth=NULL;
1273         osip_proxy_authorization_t *prx_auth=NULL;
1274
1275         *username=osip_uri_get_username(msg->from->url);
1276         osip_message_get_authorization(msg, 0, &auth);
1277         if (auth){
1278                 *realm=osip_authorization_get_realm(auth);
1279                 return 0;
1280         }
1281         osip_message_get_proxy_authorization(msg,0,&prx_auth);
1282         if (prx_auth){
1283                 *realm=osip_proxy_authorization_get_realm(prx_auth);
1284                 return 0;
1285         }
1286         return -1;
1287 }
1288
1289 static int get_auth_data(eXosip_event_t *ev, const char **realm, const char **username){
1290         if (ev->response && get_auth_data_from_response(ev->response,realm,username)==0) return 0;
1291         if (ev->request && get_auth_data_from_request(ev->request,realm,username)==0) return 0;
1292         return -1;
1293 }
1294
1295 int sal_op_get_auth_requested(SalOp *op, const char **realm, const char **username){
1296         if (op->pending_auth){
1297                 return get_auth_data(op->pending_auth,realm,username);
1298         }
1299         return -1;
1300 }
1301
1302 static bool_t process_authentication(Sal *sal, eXosip_event_t *ev){
1303         SalOp *op;
1304         const char *username,*realm;
1305         op=find_op(sal,ev);
1306         if (op==NULL){
1307                 ms_warning("No operation associated with this authentication !");
1308                 return TRUE;
1309         }
1310         if (get_auth_data(ev,&realm,&username)==0){
1311                 if (op->pending_auth!=NULL){
1312                         eXosip_event_free(op->pending_auth);
1313                         op->pending_auth=ev;
1314                 }else{
1315                         op->pending_auth=ev;
1316                         sal_add_pending_auth(sal,op);
1317                 }
1318
1319                 sal->callbacks.auth_requested(op,realm,username);
1320                 return FALSE;
1321         }
1322         return TRUE;
1323 }
1324
1325 static void authentication_ok(Sal *sal, eXosip_event_t *ev){
1326         SalOp *op;
1327         const char *username,*realm;
1328         op=find_op(sal,ev);
1329         if (op==NULL){
1330                 ms_warning("No operation associated with this authentication_ok!");
1331                 return ;
1332         }
1333         if (op->pending_auth){
1334                 eXosip_event_free(op->pending_auth);
1335                 sal_remove_pending_auth(sal,op);
1336                 op->pending_auth=NULL;
1337         }
1338         if (get_auth_data(ev,&realm,&username)==0){
1339                 sal->callbacks.auth_success(op,realm,username);
1340         }
1341 }
1342
1343 static bool_t call_failure(Sal *sal, eXosip_event_t *ev){
1344         SalOp *op;
1345         int code=0;
1346         char* computedReason=NULL;
1347         const char *reason=NULL;
1348         SalError error=SalErrorUnknown;
1349         SalReason sr=SalReasonUnknown;
1350
1351
1352         op=(SalOp*)find_op(sal,ev);
1353
1354         if (op==NULL) {
1355                 ms_warning("Call failure reported for a closed call, ignored.");
1356                 return TRUE;
1357         }
1358
1359         if (ev->response){
1360                 code=osip_message_get_status_code(ev->response);
1361                 reason=osip_message_get_reason_phrase(ev->response);
1362                 osip_header_t *h=NULL;
1363                 if (!osip_message_header_get_byname(    ev->response
1364                                                                                         ,"Reason"
1365                                                                                         ,0
1366                                                                                         ,&h)) {
1367                         computedReason = ms_strdup_printf("%s %s",reason,osip_header_get_value(h));
1368                         reason = computedReason;
1369
1370                 }
1371         }
1372         switch(code)
1373         {
1374                 case 401:
1375                 case 407:
1376                         return process_authentication(sal,ev);
1377                         break;
1378                 case 400:
1379                         error=SalErrorUnknown;
1380                 break;
1381                 case 404:
1382                         error=SalErrorFailure;
1383                         sr=SalReasonNotFound;
1384                 break;
1385                 case 415:
1386                         error=SalErrorFailure;
1387                         sr=SalReasonMedia;
1388                 break;
1389                 case 422:
1390                         eXosip_default_action(ev);
1391                         return TRUE;
1392                 break;
1393                 case 480:
1394                         error=SalErrorFailure;
1395                         sr=SalReasonTemporarilyUnavailable;
1396                 case 486:
1397                         error=SalErrorFailure;
1398                         sr=SalReasonBusy;
1399                 break;
1400                 case 487:
1401                 break;
1402                 case 600:
1403                         error=SalErrorFailure;
1404                         sr=SalReasonDoNotDisturb;
1405                 break;
1406                 case 603:
1407                         error=SalErrorFailure;
1408                         sr=SalReasonDeclined;
1409                 break;
1410                 default:
1411                         if (code>0){
1412                                 error=SalErrorFailure;
1413                                 sr=SalReasonUnknown;
1414                         }else error=SalErrorNoResponse;
1415         }
1416         op->terminated=TRUE;
1417         sal->callbacks.call_failure(op,error,sr,reason,code);
1418         if (computedReason != NULL){
1419                 ms_free(computedReason);
1420         }
1421         return TRUE;
1422 }
1423
1424 /* Request remote side to send us VFU */
1425 void sal_call_send_vfu_request(SalOp *h){
1426         osip_message_t *msg=NULL;
1427         char info_body[] =
1428                         "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"
1429                          "<media_control>"
1430                          "  <vc_primitive>"
1431                          "    <to_encoder>"
1432                          "      <picture_fast_update></picture_fast_update>"
1433                          "    </to_encoder>"
1434                          "  </vc_primitive>"
1435                          "</media_control>";
1436
1437         char clen[10];
1438
1439         eXosip_lock();
1440         eXosip_call_build_info(h->did,&msg);
1441         if (msg){
1442                 osip_message_set_body(msg,info_body,strlen(info_body));
1443                 osip_message_set_content_type(msg,"application/media_control+xml");
1444                 snprintf(clen,sizeof(clen),"%lu",(unsigned long)strlen(info_body));
1445                 osip_message_set_content_length(msg,clen);
1446                 eXosip_call_send_request(h->did,msg);
1447                 ms_message("Sending VFU request !");
1448         }
1449         eXosip_unlock();
1450 }
1451
1452 static void process_media_control_xml(Sal *sal, eXosip_event_t *ev){
1453         SalOp *op=find_op(sal,ev);
1454         osip_body_t *body=NULL;
1455
1456         if (op==NULL){
1457                 ms_warning("media control xml received without operation context!");
1458                 return ;
1459         }
1460
1461         osip_message_get_body(ev->request,0,&body);
1462         if (body && body->body!=NULL &&
1463                 strstr(body->body,"picture_fast_update")){
1464                 osip_message_t *ans=NULL;
1465                 ms_message("Receiving VFU request !");
1466                 if (sal->callbacks.vfu_request){
1467                         sal->callbacks.vfu_request(op);
1468                         eXosip_call_build_answer(ev->tid,200,&ans);
1469                         if (ans)
1470                                 eXosip_call_send_answer(ev->tid,200,ans);
1471                         return;
1472                 }
1473         }
1474         /*in all other cases we must say it is not implemented.*/
1475         {
1476                 osip_message_t *ans=NULL;
1477                 eXosip_lock();
1478                 eXosip_call_build_answer(ev->tid,501,&ans);
1479                 if (ans)
1480                         eXosip_call_send_answer(ev->tid,501,ans);
1481                 eXosip_unlock();
1482         }
1483 }
1484
1485 static void process_dtmf_relay(Sal *sal, eXosip_event_t *ev){
1486         SalOp *op=find_op(sal,ev);
1487         osip_body_t *body=NULL;
1488
1489         if (op==NULL){
1490                 ms_warning("media dtmf relay received without operation context!");
1491                 return ;
1492         }
1493
1494         osip_message_get_body(ev->request,0,&body);
1495         if (body && body->body!=NULL){
1496                 osip_message_t *ans=NULL;
1497                 const char *name=strstr(body->body,"Signal");
1498                 if (name==NULL) name=strstr(body->body,"signal");
1499                 if (name==NULL) {
1500                         ms_warning("Could not extract the dtmf name from the SIP INFO.");
1501                 }else{
1502                         char tmp[2];
1503                         name+=strlen("signal");
1504                         if (sscanf(name," = %1s",tmp)==1){
1505                                 ms_message("Receiving dtmf %s via SIP INFO.",tmp);
1506                                 if (sal->callbacks.dtmf_received != NULL)
1507                                         sal->callbacks.dtmf_received(op, tmp[0]);
1508                         }
1509                 }
1510                 eXosip_lock();
1511                 eXosip_call_build_answer(ev->tid,200,&ans);
1512                 if (ans)
1513                         eXosip_call_send_answer(ev->tid,200,ans);
1514                 eXosip_unlock();
1515         }
1516 }
1517
1518 static void fill_options_answer(osip_message_t *options){
1519         osip_message_set_allow(options,"INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, SUBSCRIBE, NOTIFY, INFO");
1520         osip_message_set_accept(options,"application/sdp");
1521 }
1522
1523 static void process_refer(Sal *sal, SalOp *op, eXosip_event_t *ev){
1524         osip_header_t *h=NULL;
1525         osip_message_t *ans=NULL;
1526         ms_message("Receiving REFER request !");
1527         osip_message_header_get_byname(ev->request,"Refer-To",0,&h);
1528
1529         if (h){
1530                 osip_from_t *from=NULL;
1531                 char *tmp;
1532                 osip_from_init(&from);
1533
1534                 if (osip_from_parse(from,h->hvalue)==0){
1535                         if (op ){
1536                                 osip_uri_header_t *uh=NULL;
1537                                 osip_header_t *referred_by=NULL;
1538                                 osip_uri_header_get_byname(&from->url->url_headers,(char*)"Replaces",&uh);
1539                                 if (uh!=NULL && uh->gvalue && uh->gvalue[0]!='\0'){
1540                                         ms_message("Found replaces in Refer-To");
1541                                         if (op->replaces){
1542                                                 ms_free(op->replaces);
1543                                         }
1544                                         op->replaces=ms_strdup(uh->gvalue);
1545                                 }
1546                                 osip_message_header_get_byname(ev->request,"Referred-By",0,&referred_by);
1547                                 if (referred_by && referred_by->hvalue && referred_by->hvalue[0]!='\0'){
1548                                         if (op->referred_by)
1549                                                 ms_free(op->referred_by);
1550                                         op->referred_by=ms_strdup(referred_by->hvalue);
1551                                 }
1552                         }
1553                         osip_uri_header_freelist(&from->url->url_headers);
1554                         osip_from_to_str(from,&tmp);
1555                         sal->callbacks.refer_received(sal,op,tmp);
1556                         osip_free(tmp);
1557                         osip_from_free(from);
1558                 }
1559                 eXosip_lock();
1560                 eXosip_call_build_answer(ev->tid,202,&ans);
1561                 if (ans)
1562                         eXosip_call_send_answer(ev->tid,202,ans);
1563                 eXosip_unlock();
1564         }
1565         else
1566         {
1567                 ms_warning("cannot do anything with the refer without destination\n");
1568         }
1569 }
1570
1571 static void process_notify(Sal *sal, eXosip_event_t *ev){
1572         osip_header_t *h=NULL;
1573         char *from=NULL;
1574         SalOp *op=find_op(sal,ev);
1575         osip_message_t *ans=NULL;
1576
1577         ms_message("Receiving NOTIFY request !");
1578         osip_from_to_str(ev->request->from,&from);
1579         osip_message_header_get_byname(ev->request,"Event",0,&h);
1580         if(h){
1581                 osip_body_t *body=NULL;
1582                 //osip_content_type_t *ct=NULL;
1583                 osip_message_get_body(ev->request,0,&body);
1584                 //ct=osip_message_get_content_type(ev->request);
1585                 if (h->hvalue && strcasecmp(h->hvalue,"refer")==0){
1586                         /*special handling of refer events*/
1587                         if (body && body->body){
1588                                 osip_message_t *msg;
1589                                 osip_message_init(&msg);
1590                                 if (osip_message_parse_sipfrag(msg,body->body,strlen(body->body))==0){
1591                                         int code=osip_message_get_status_code(msg);
1592                                         if (code==100){
1593                                                 sal->callbacks.notify_refer(op,SalReferTrying);
1594                                         }else if (code==200){
1595                                                 sal->callbacks.notify_refer(op,SalReferSuccess);
1596                                         }else if (code>=400){
1597                                                 sal->callbacks.notify_refer(op,SalReferFailed);
1598                                         }
1599                                 }
1600                                 osip_message_free(msg);
1601                         }
1602                 }else{
1603                         /*generic handling*/
1604                         sal->callbacks.notify(op,from,h->hvalue);
1605                 }
1606         }
1607         /*answer that we received the notify*/
1608         eXosip_lock();
1609         eXosip_call_build_answer(ev->tid,200,&ans);
1610         if (ans)
1611                 eXosip_call_send_answer(ev->tid,200,ans);
1612         eXosip_unlock();
1613         osip_free(from);
1614 }
1615
1616 static void call_message_new(Sal *sal, eXosip_event_t *ev){
1617         osip_message_t *ans=NULL;
1618         if (ev->request){
1619                 if (MSG_IS_INFO(ev->request)){
1620                         osip_content_type_t *ct;
1621                         ct=osip_message_get_content_type(ev->request);
1622                         if (ct && ct->subtype){
1623                                 if (strcmp(ct->subtype,"media_control+xml")==0)
1624                                         process_media_control_xml(sal,ev);
1625                                 else if (strcmp(ct->subtype,"dtmf-relay")==0)
1626                                         process_dtmf_relay(sal,ev);
1627                                 else {
1628                                         ms_message("Unhandled SIP INFO.");
1629                                         /*send an "Not implemented" answer*/
1630                                         eXosip_lock();
1631                                         eXosip_call_build_answer(ev->tid,501,&ans);
1632                                         if (ans)
1633                                                 eXosip_call_send_answer(ev->tid,501,ans);
1634                                         eXosip_unlock();
1635                                 }
1636                         }else{
1637                                 /*empty SIP INFO, probably to test we are alive. Send an empty answer*/
1638                                 eXosip_lock();
1639                                 eXosip_call_build_answer(ev->tid,200,&ans);
1640                                 if (ans)
1641                                         eXosip_call_send_answer(ev->tid,200,ans);
1642                                 eXosip_unlock();
1643                         }
1644                 }else if(MSG_IS_MESSAGE(ev->request)){
1645                         /* SIP messages could be received into call */
1646                         text_received(sal, ev);
1647                         eXosip_lock();
1648                         eXosip_call_build_answer(ev->tid,200,&ans);
1649                         if (ans)
1650                                 eXosip_call_send_answer(ev->tid,200,ans);
1651                         eXosip_unlock();
1652                 }else if(MSG_IS_REFER(ev->request)){
1653                         SalOp *op=find_op(sal,ev);
1654
1655                         ms_message("Receiving REFER request !");
1656                         process_refer(sal,op,ev);
1657                 }else if(MSG_IS_NOTIFY(ev->request)){
1658                         process_notify(sal,ev);
1659                 }else if (MSG_IS_OPTIONS(ev->request)){
1660                         eXosip_lock();
1661                         eXosip_call_build_answer(ev->tid,200,&ans);
1662                         if (ans){
1663                                 fill_options_answer(ans);
1664                                 eXosip_call_send_answer(ev->tid,200,ans);
1665                         }
1666                         eXosip_unlock();
1667                 }
1668         }else ms_warning("call_message_new: No request ?");
1669 }
1670
1671 static void inc_update(Sal *sal, eXosip_event_t *ev){
1672         osip_message_t *msg=NULL;
1673         ms_message("Processing incoming UPDATE");
1674         eXosip_lock();
1675         eXosip_message_build_answer(ev->tid,200,&msg);
1676         if (msg!=NULL)
1677                 eXosip_message_send_answer(ev->tid,200,msg);
1678         eXosip_unlock();
1679 }
1680
1681 static bool_t comes_from_local_if(osip_message_t *msg){
1682         osip_via_t *via=NULL;
1683         osip_message_get_via(msg,0,&via);
1684         if (via){
1685                 const char *host;
1686                 host=osip_via_get_host(via);
1687                 if (strcmp(host,"127.0.0.1")==0 || strcmp(host,"::1")==0){
1688                         osip_generic_param_t *param=NULL;
1689                         osip_via_param_get_byname(via,"received",&param);
1690                         if (param==NULL) return TRUE;
1691                         if (param->gvalue &&
1692                                 (strcmp(param->gvalue,"127.0.0.1")==0 || strcmp(param->gvalue,"::1")==0)){
1693                                 return TRUE;
1694                         }
1695                 }
1696         }
1697         return FALSE;
1698 }
1699
1700 static void text_received(Sal *sal, eXosip_event_t *ev){
1701         osip_body_t *body=NULL;
1702         char *from=NULL,*msg;
1703
1704         osip_message_get_body(ev->request,0,&body);
1705         if (body==NULL){
1706                 ms_error("Could not get text message from SIP body");
1707                 return;
1708         }
1709         msg=body->body;
1710         osip_from_to_str(ev->request->from,&from);
1711         sal->callbacks.text_received(sal,from,msg);
1712         osip_free(from);
1713 }
1714
1715
1716
1717 static void other_request(Sal *sal, eXosip_event_t *ev){
1718         ms_message("in other_request");
1719         if (ev->request==NULL) return;
1720         if (strcmp(ev->request->sip_method,"MESSAGE")==0){
1721                 text_received(sal,ev);
1722                 eXosip_message_send_answer(ev->tid,200,NULL);
1723         }else if (strcmp(ev->request->sip_method,"OPTIONS")==0){
1724                 osip_message_t *options=NULL;
1725                 eXosip_options_build_answer(ev->tid,200,&options);
1726                 fill_options_answer(options);
1727                 eXosip_options_send_answer(ev->tid,200,options);
1728         }else if (strncmp(ev->request->sip_method, "REFER", 5) == 0){
1729                 ms_message("Receiving REFER request !");
1730                 if (comes_from_local_if(ev->request)) {
1731                         process_refer(sal,NULL,ev);
1732                 }else ms_warning("Ignored REFER not coming from this local loopback interface.");
1733         }else if (strncmp(ev->request->sip_method, "UPDATE", 6) == 0){
1734                 inc_update(sal,ev);
1735     }else {
1736                 char *tmp=NULL;
1737                 size_t msglen=0;
1738                 osip_message_to_str(ev->request,&tmp,&msglen);
1739                 if (tmp){
1740                         ms_message("Unsupported request received:\n%s",tmp);
1741                         osip_free(tmp);
1742                 }
1743                 /*answer with a 501 Not implemented*/
1744                 eXosip_message_send_answer(ev->tid,501,NULL);
1745         }
1746 }
1747
1748 static void masquerade_via(osip_message_t *msg, const char *ip, const char *port){
1749         osip_via_t *via=NULL;
1750         osip_message_get_via(msg,0,&via);
1751         if (via){
1752                 osip_free(via->port);
1753                 via->port=osip_strdup(port);
1754                 osip_free(via->host);
1755                 via->host=osip_strdup(ip);
1756         }
1757 }
1758
1759
1760 static bool_t fix_message_contact(SalOp *op, osip_message_t *request,osip_message_t *last_answer, bool_t expire_last_contact) {
1761         osip_contact_t *ctt=NULL;
1762         const char *received;
1763         int rport;
1764         SalTransport transport;
1765         char port[20];
1766
1767         if (extract_received_rport(last_answer,&received,&rport,&transport)==-1) return FALSE;
1768         osip_message_get_contact(request,0,&ctt);
1769         if (ctt == NULL) {
1770                 ms_warning("fix_message_contact(): no contact to update");
1771                 return FALSE;
1772         }
1773         if (expire_last_contact){
1774                 osip_contact_t *oldct=NULL,*prevct;
1775                 osip_generic_param_t *param=NULL;
1776                 osip_contact_clone(ctt,&oldct);
1777                 while ((prevct=(osip_contact_t*)osip_list_get(&request->contacts,1))!=NULL){
1778                         osip_contact_free(prevct);
1779                         osip_list_remove(&request->contacts,1);
1780                 }
1781                 osip_list_add(&request->contacts,oldct,1);
1782                 osip_contact_param_get_byname(oldct,"expires",&param);
1783                 if (param){
1784                         if (param->gvalue) osip_free(param->gvalue);
1785                         param->gvalue=osip_strdup("0");
1786                 }else{
1787                         osip_contact_param_add(oldct,osip_strdup("expires"),osip_strdup("0"));
1788                 }
1789         }
1790         if (ctt->url->host!=NULL){
1791                 osip_free(ctt->url->host);
1792         }
1793         ctt->url->host=osip_strdup(received);
1794         if (ctt->url->port!=NULL){
1795                 osip_free(ctt->url->port);
1796         }
1797         snprintf(port,sizeof(port),"%i",rport);
1798         ctt->url->port=osip_strdup(port);
1799         if (op->masquerade_via) masquerade_via(request,received,port);
1800
1801         if (transport != SalTransportUDP) {
1802                 sal_address_set_param((SalAddress *)ctt, "transport", sal_transport_to_string(transport));
1803         }
1804         return TRUE;
1805 }
1806
1807 static bool_t register_again_with_updated_contact(SalOp *op, osip_message_t *orig_request, osip_message_t *last_answer){
1808         osip_contact_t *ctt=NULL;
1809         SalAddress* ori_contact_address=NULL;
1810         const char *received;
1811         int rport;
1812         SalTransport transport;
1813         char* tmp;
1814         osip_message_t *msg=NULL;
1815         Sal* sal=op->base.root;
1816         int i=0;
1817         bool_t found_valid_contact=FALSE;
1818         bool_t from_request=FALSE;
1819
1820         if (sal->double_reg==FALSE ) return FALSE;
1821
1822         if (extract_received_rport(last_answer,&received,&rport,&transport)==-1) return FALSE;
1823         do{
1824                 ctt=NULL;
1825                 osip_message_get_contact(last_answer,i,&ctt);
1826                 if (!from_request && ctt==NULL) {
1827                         osip_message_get_contact(orig_request,0,&ctt);
1828                         from_request=TRUE;
1829                 }
1830                 if (ctt){
1831                         osip_contact_to_str(ctt,&tmp);
1832                         ori_contact_address = sal_address_new(tmp);
1833
1834                         /*check if contact is up to date*/
1835                         if (strcmp(sal_address_get_domain(ori_contact_address),received) ==0
1836                                 && sal_address_get_port_int(ori_contact_address) == rport
1837                         && sal_address_get_transport(ori_contact_address) == transport) {
1838                                 if (!from_request){
1839                                         ms_message("Register response has up to date contact, doing nothing.");
1840                                 }else {
1841                                         ms_warning("Register response does not have up to date contact, but last request had."
1842                                                 "Stupid registrar detected, giving up.");
1843                                 }
1844                                 found_valid_contact=TRUE;
1845                         }
1846                         osip_free(tmp);
1847                         sal_address_destroy(ori_contact_address);
1848                 }else break;
1849                 i++;
1850         }while(!found_valid_contact);
1851         if (!found_valid_contact)
1852                 ms_message("Contact do not match, resending register.");
1853         else return FALSE;
1854
1855         eXosip_lock();
1856         eXosip_register_build_register(op->rid,op->expires,&msg);
1857         if (msg==NULL){
1858             eXosip_unlock();
1859             ms_warning("Fail to create a contact updated register.");
1860             return FALSE;
1861         }
1862         if (fix_message_contact(op,msg,last_answer,op->base.root->expire_old_contact)) {
1863                 eXosip_register_send_register(op->rid,msg);
1864                 eXosip_unlock();
1865                 ms_message("Resending new register with updated contact");
1866                 update_contact_from_response(op,last_answer);
1867                 return TRUE;
1868         } else {
1869             ms_warning("Fail to send updated register.");
1870             eXosip_unlock();
1871             return FALSE;
1872         }
1873         eXosip_unlock();
1874         return FALSE;
1875 }
1876
1877 static void registration_success(Sal *sal, eXosip_event_t *ev){
1878         SalOp *op=sal_find_register(sal,ev->rid);
1879         osip_header_t *h=NULL;
1880         bool_t registered;
1881         if (op==NULL){
1882                 ms_error("Receiving register response for unknown operation");
1883                 return;
1884         }
1885         osip_message_get_expires(ev->request,0,&h);
1886         if (h!=NULL && atoi(h->hvalue)!=0){
1887                 registered=TRUE;
1888                 if (!register_again_with_updated_contact(op,ev->request,ev->response)){
1889                         sal->callbacks.register_success(op,registered);
1890                 }
1891         }else {
1892                 sal->callbacks.register_success(op,FALSE);
1893         }
1894 }
1895
1896 static bool_t registration_failure(Sal *sal, eXosip_event_t *ev){
1897         int status_code=0;
1898         const char *reason=NULL;
1899         SalOp *op=sal_find_register(sal,ev->rid);
1900         SalReason sr=SalReasonUnknown;
1901         SalError se=SalErrorUnknown;
1902
1903         if (op==NULL){
1904                 ms_error("Receiving register failure for unknown operation");
1905                 return TRUE;
1906         }
1907         if (ev->response){
1908                 status_code=osip_message_get_status_code(ev->response);
1909                 reason=osip_message_get_reason_phrase(ev->response);
1910         }
1911         switch(status_code){
1912                 case 401:
1913                 case 407:
1914                         return process_authentication(sal,ev);
1915                         break;
1916                 case 423: /*interval too brief*/
1917                         {/*retry with greater interval */
1918                                 osip_header_t *h=NULL;
1919                                 osip_message_t *msg=NULL;
1920                                 osip_message_header_get_byname(ev->response,"min-expires",0,&h);
1921                                 if (h && h->hvalue && h->hvalue[0]!='\0'){
1922                                         int val=atoi(h->hvalue);
1923                                         if (val>op->expires)
1924                                                 op->expires=val;
1925                                 }else op->expires*=2;
1926                                 eXosip_lock();
1927                                 eXosip_register_build_register(op->rid,op->expires,&msg);
1928                                 eXosip_register_send_register(op->rid,msg);
1929                                 eXosip_unlock();
1930                         }
1931                 break;
1932                 case 606: /*Not acceptable, workaround for proxies that don't like private addresses
1933                                  in vias, such as ekiga.net
1934                                  On the opposite, freephonie.net bugs when via are masqueraded.
1935                                  */
1936                         op->masquerade_via=TRUE;
1937                 default:
1938                         /* if contact is up to date, process the failure, otherwise resend a new register with
1939                                 updated contact first, just in case the faillure is due to incorrect contact */
1940                         if (ev->response && register_again_with_updated_contact(op,ev->request,ev->response))
1941                                 return TRUE; /*we are retrying with an updated contact*/
1942                         if (status_code==403){
1943                                 se=SalErrorFailure;
1944                                 sr=SalReasonForbidden;
1945                         }else if (status_code==0){
1946                                 se=SalErrorNoResponse;
1947                         }
1948                         sal->callbacks.register_failure(op,se,sr,reason);
1949         }
1950         return TRUE;
1951 }
1952
1953 static void other_request_reply(Sal *sal,eXosip_event_t *ev){
1954         SalOp *op=find_op(sal,ev);
1955         LinphoneChatMessage* chat_msg;
1956         ms_message("Processing reponse status [%i] for method [%s]",ev->response->status_code,osip_message_get_method(ev->request));
1957         if (op==NULL){
1958                 ms_warning("other_request_reply(): Receiving response to unknown request.");
1959                 return;
1960         }
1961         if (ev->response){
1962                 update_contact_from_response(op,ev->response);
1963                 if (ev->request && strcmp(osip_message_get_method(ev->request),"OPTIONS")==0)
1964                         sal->callbacks.ping_reply(op);
1965                 else if (ev->request && strcmp(osip_message_get_method(ev->request),"MESSAGE")==0) {
1966                         /*out of call message acknolegment*/
1967                         chat_msg=(LinphoneChatMessage* )op->base.user_pointer;
1968                         if (chat_msg->cb) {
1969                                 chat_msg->cb(chat_msg
1970                                                          ,(ev->response->status_code==200?LinphoneChatMessageStateDelivered:LinphoneChatMessageStateNotDelivered)
1971                                                          ,chat_msg->cb_ud);
1972                         }
1973                         linphone_chat_message_destroy(chat_msg);
1974                 }
1975         }
1976 }
1977
1978 static void process_in_call_reply(Sal *sal, eXosip_event_t *ev){
1979         SalOp *op=find_op(sal,ev);
1980         if (ev->response){
1981                 if (ev->request && strcmp(osip_message_get_method(ev->request),"NOTIFY")==0){
1982                         if (op->sipfrag_pending){
1983                                 send_notify_for_refer(op->did,op->sipfrag_pending);
1984                                 op->sipfrag_pending=NULL;
1985                         }
1986                 }
1987         }
1988 }
1989
1990 static bool_t process_event(Sal *sal, eXosip_event_t *ev){
1991         ms_message("linphone process event get a message %d\n",ev->type);
1992         switch(ev->type){
1993                 case EXOSIP_CALL_ANSWERED:
1994                         ms_message("CALL_ANSWERED\n");
1995                         call_accepted(sal,ev);
1996                         authentication_ok(sal,ev);
1997                         break;
1998                 case EXOSIP_CALL_CLOSED:
1999                 case EXOSIP_CALL_CANCELLED:
2000                         ms_message("CALL_CLOSED or CANCELLED\n");
2001                         call_terminated(sal,ev);
2002                         break;
2003                 case EXOSIP_CALL_TIMEOUT:
2004                 case EXOSIP_CALL_NOANSWER:
2005                         ms_message("CALL_TIMEOUT or NOANSWER\n");
2006                         return call_failure(sal,ev);
2007                         break;
2008                 case EXOSIP_CALL_REQUESTFAILURE:
2009                 case EXOSIP_CALL_GLOBALFAILURE:
2010                 case EXOSIP_CALL_SERVERFAILURE:
2011                         ms_message("CALL_REQUESTFAILURE or GLOBALFAILURE or SERVERFAILURE\n");
2012                         return call_failure(sal,ev);
2013                         break;
2014                 case EXOSIP_CALL_RELEASED:
2015                         ms_message("CALL_RELEASED\n");
2016                         call_released(sal, ev);
2017                         break;
2018                 case EXOSIP_CALL_INVITE:
2019                         ms_message("CALL_NEW\n");
2020                         inc_new_call(sal,ev);
2021                         break;
2022                 case EXOSIP_CALL_REINVITE:
2023                         handle_reinvite(sal,ev);
2024                         break;
2025                 case EXOSIP_CALL_ACK:
2026                         ms_message("CALL_ACK");
2027                         handle_ack(sal,ev);
2028                         break;
2029                 case EXOSIP_CALL_REDIRECTED:
2030                         ms_message("CALL_REDIRECTED");
2031                         eXosip_default_action(ev);
2032                         break;
2033                 case EXOSIP_CALL_PROCEEDING:
2034                         ms_message("CALL_PROCEEDING");
2035                         call_proceeding(sal,ev);
2036                         break;
2037                 case EXOSIP_CALL_RINGING:
2038                         ms_message("CALL_RINGING");
2039                         call_ringing(sal,ev);
2040                         authentication_ok(sal,ev);
2041                         break;
2042                 case EXOSIP_CALL_MESSAGE_NEW:
2043                         ms_message("EXOSIP_CALL_MESSAGE_NEW");
2044                         call_message_new(sal,ev);
2045                         break;
2046                 case EXOSIP_CALL_MESSAGE_REQUESTFAILURE:
2047                         if (ev->response &&
2048                                 (ev->response->status_code==407 || ev->response->status_code==401)){
2049                                  return process_authentication(sal,ev);
2050                         }
2051                         break;
2052                 case EXOSIP_CALL_MESSAGE_ANSWERED:
2053                         ms_message("EXOSIP_CALL_MESSAGE_ANSWERED ");
2054                         process_in_call_reply(sal,ev);
2055                 break;
2056                 case EXOSIP_IN_SUBSCRIPTION_NEW:
2057                         ms_message("CALL_IN_SUBSCRIPTION_NEW ");
2058                         sal_exosip_subscription_recv(sal,ev);
2059                         break;
2060                 case EXOSIP_IN_SUBSCRIPTION_RELEASED:
2061                         ms_message("CALL_SUBSCRIPTION_NEW ");
2062                         sal_exosip_in_subscription_closed(sal,ev);
2063                         break;
2064                 case EXOSIP_SUBSCRIPTION_UPDATE:
2065                         ms_message("CALL_SUBSCRIPTION_UPDATE");
2066                         break;
2067                 case EXOSIP_SUBSCRIPTION_NOTIFY:
2068                         ms_message("CALL_SUBSCRIPTION_NOTIFY");
2069                         sal_exosip_notify_recv(sal,ev);
2070                         break;
2071                 case EXOSIP_SUBSCRIPTION_ANSWERED:
2072                         ms_message("EXOSIP_SUBSCRIPTION_ANSWERED, ev->sid=%i, ev->did=%i\n",ev->sid,ev->did);
2073                         sal_exosip_subscription_answered(sal,ev);
2074                         break;
2075                 case EXOSIP_SUBSCRIPTION_CLOSED:
2076                         ms_message("EXOSIP_SUBSCRIPTION_CLOSED\n");
2077                         sal_exosip_subscription_closed(sal,ev);
2078                         break;
2079                 case EXOSIP_SUBSCRIPTION_REQUESTFAILURE:   /**< announce a request failure      */
2080                         if (ev->response && (ev->response->status_code == 407 || ev->response->status_code == 401)){
2081                                 return process_authentication(sal,ev);
2082                         }
2083         case EXOSIP_SUBSCRIPTION_SERVERFAILURE:
2084                 case EXOSIP_SUBSCRIPTION_GLOBALFAILURE:
2085                         sal_exosip_subscription_closed(sal,ev);
2086                         break;
2087                 case EXOSIP_REGISTRATION_FAILURE:
2088                         ms_message("REGISTRATION_FAILURE\n");
2089                         return registration_failure(sal,ev);
2090                         break;
2091                 case EXOSIP_REGISTRATION_SUCCESS:
2092                         authentication_ok(sal,ev);
2093                         registration_success(sal,ev);
2094                         break;
2095                 case EXOSIP_MESSAGE_NEW:
2096                         other_request(sal,ev);
2097                         break;
2098                 case EXOSIP_MESSAGE_PROCEEDING:
2099                 case EXOSIP_MESSAGE_ANSWERED:
2100                 case EXOSIP_MESSAGE_REDIRECTED:
2101                 case EXOSIP_MESSAGE_SERVERFAILURE:
2102                 case EXOSIP_MESSAGE_GLOBALFAILURE:
2103                         other_request_reply(sal,ev);
2104                         break;
2105                 case EXOSIP_MESSAGE_REQUESTFAILURE:
2106                 case EXOSIP_NOTIFICATION_REQUESTFAILURE:
2107                         if (ev->response) {
2108                                 switch (ev->response->status_code) {
2109                                         case 407:
2110                                         case 401:
2111                                                 return process_authentication(sal,ev);
2112                                         case 412: {
2113                                                 eXosip_automatic_action ();
2114                                                 return 1;
2115                                         }
2116                                 }
2117                         }
2118                         other_request_reply(sal,ev);
2119                         break;
2120                 default:
2121                         ms_message("Unhandled exosip event ! %i",ev->type);
2122                         break;
2123         }
2124         return TRUE;
2125 }
2126
2127 int sal_iterate(Sal *sal){
2128         eXosip_event_t *ev;
2129         while((ev=eXosip_event_wait(0,0))!=NULL){
2130                 if (process_event(sal,ev))
2131                         eXosip_event_free(ev);
2132         }
2133 #ifdef HAVE_EXOSIP_TRYLOCK
2134         if (eXosip_trylock()==0){
2135                 eXosip_automatic_refresh();
2136                 eXosip_unlock();
2137         }else{
2138                 ms_warning("eXosip_trylock busy.");
2139         }
2140 #else
2141         eXosip_lock();
2142         eXosip_automatic_refresh();
2143         eXosip_unlock();
2144 #endif
2145         return 0;
2146 }
2147
2148 static void register_set_contact(osip_message_t *msg, const char *contact){
2149         osip_uri_param_t *param = NULL;
2150         osip_contact_t *ct=NULL;
2151         char *line=NULL;
2152         /*we get the line parameter choosed by exosip, and add it to our own contact*/
2153         osip_message_get_contact(msg,0,&ct);
2154         if (ct!=NULL){
2155                 osip_uri_uparam_get_byname(ct->url, "line", &param);
2156                 if (param && param->gvalue)
2157                         line=osip_strdup(param->gvalue);
2158         }
2159         _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
2160         osip_message_set_contact(msg,contact);
2161         osip_message_get_contact(msg,0,&ct);
2162         osip_uri_uparam_add(ct->url,osip_strdup("line"),line);
2163 }
2164
2165 static void sal_register_add_route(osip_message_t *msg, const char *proxy){
2166         char tmp[256]={0};
2167         snprintf(tmp,sizeof(tmp)-1,"<%s;lr>",proxy);
2168
2169         osip_list_special_free(&msg->routes,(void (*)(void*))osip_route_free);
2170         osip_message_set_route(msg,tmp);
2171 }
2172
2173 int sal_register(SalOp *h, const char *proxy, const char *from, int expires){
2174         osip_message_t *msg;
2175         const char *contact=sal_op_get_contact(h);
2176
2177         sal_op_set_route(h,proxy);
2178         if (h->rid==-1){
2179                 SalAddress *from_parsed=sal_address_new(from);
2180                 char domain[256];
2181                 if (from_parsed==NULL) {
2182                         ms_warning("sal_register() bad from %s",from);
2183                         return -1;
2184                 }
2185                 snprintf(domain,sizeof(domain),"sip:%s",sal_address_get_domain(from_parsed));
2186                 sal_address_destroy(from_parsed);
2187                 eXosip_lock();
2188                 h->rid=eXosip_register_build_initial_register(from,domain,NULL,expires,&msg);
2189                 if (msg){
2190                         if (contact) register_set_contact(msg,contact);
2191                         sal_register_add_route(msg,proxy);
2192                         sal_add_register(h->base.root,h);
2193                 }else{
2194                         ms_error("Could not build initial register.");
2195                         eXosip_unlock();
2196                         return -1;
2197                 }
2198         }else{
2199                 eXosip_lock();
2200                 eXosip_register_build_register(h->rid,expires,&msg);
2201                 sal_register_add_route(msg,proxy);
2202         }
2203         if (msg)
2204                 eXosip_register_send_register(h->rid,msg);
2205         eXosip_unlock();
2206         h->expires=expires;
2207         return (msg != NULL) ? 0 : -1;
2208 }
2209
2210 int sal_register_refresh(SalOp *op, int expires){
2211         osip_message_t *msg=NULL;
2212         const char *contact=sal_op_get_contact(op);
2213
2214         if (op->rid==-1){
2215                 ms_error("Unexistant registration context, not possible to refresh.");
2216                 return -1;
2217         }
2218         eXosip_lock();
2219         eXosip_register_build_register(op->rid,expires,&msg);
2220         if (msg!=NULL){
2221                 if (contact) register_set_contact(msg,contact);
2222                 sal_register_add_route(msg,sal_op_get_route(op));
2223                 eXosip_register_send_register(op->rid,msg);
2224         }else ms_error("Could not build REGISTER refresh message.");
2225         eXosip_unlock();
2226         return (msg != NULL) ? 0 : -1;
2227 }
2228
2229
2230 int sal_unregister(SalOp *h){
2231         osip_message_t *msg=NULL;
2232         eXosip_lock();
2233         eXosip_register_build_register(h->rid,0,&msg);
2234         if (msg) eXosip_register_send_register(h->rid,msg);
2235         else ms_warning("Could not build unREGISTER !");
2236         eXosip_unlock();
2237         return 0;
2238 }
2239
2240 SalAddress * sal_address_new(const char *uri){
2241         osip_from_t *from;
2242         osip_from_init(&from);
2243
2244         // Remove front spaces
2245         while (uri[0]==' ') {
2246                 uri++;
2247         }
2248
2249         if (osip_from_parse(from,uri)!=0){
2250                 osip_from_free(from);
2251                 return NULL;
2252         }
2253         if (from->displayname!=NULL && from->displayname[0]=='"'){
2254                 char *unquoted=osip_strdup_without_quote(from->displayname);
2255                 osip_free(from->displayname);
2256                 from->displayname=unquoted;
2257         }
2258         return (SalAddress*)from;
2259 }
2260
2261 SalAddress * sal_address_clone(const SalAddress *addr){
2262         osip_from_t *ret=NULL;
2263         osip_from_clone((osip_from_t*)addr,&ret);
2264         return (SalAddress*)ret;
2265 }
2266
2267 #define null_if_empty(s) (((s)!=NULL && (s)[0]!='\0') ? (s) : NULL )
2268
2269 const char *sal_address_get_scheme(const SalAddress *addr){
2270         const osip_from_t *u=(const osip_from_t*)addr;
2271         return null_if_empty(u->url->scheme);
2272 }
2273
2274 const char *sal_address_get_display_name(const SalAddress* addr){
2275         const osip_from_t *u=(const osip_from_t*)addr;
2276         return null_if_empty(u->displayname);
2277 }
2278
2279 const char *sal_address_get_username(const SalAddress *addr){
2280         const osip_from_t *u=(const osip_from_t*)addr;
2281         return null_if_empty(u->url->username);
2282 }
2283
2284 const char *sal_address_get_domain(const SalAddress *addr){
2285         const osip_from_t *u=(const osip_from_t*)addr;
2286         return null_if_empty(u->url->host);
2287 }
2288
2289 void sal_address_set_display_name(SalAddress *addr, const char *display_name){
2290         osip_from_t *u=(osip_from_t*)addr;
2291         if (u->displayname!=NULL){
2292                 osip_free(u->displayname);
2293                 u->displayname=NULL;
2294         }
2295         if (display_name!=NULL && display_name[0]!='\0'){
2296                 u->displayname=osip_strdup(display_name);
2297         }
2298 }
2299
2300 void sal_address_set_username(SalAddress *addr, const char *username){
2301         osip_from_t *uri=(osip_from_t*)addr;
2302         if (uri->url->username!=NULL){
2303                 osip_free(uri->url->username);
2304                 uri->url->username=NULL;
2305         }
2306         if (username)
2307                 uri->url->username=osip_strdup(username);
2308 }
2309
2310 void sal_address_set_domain(SalAddress *addr, const char *host){
2311         osip_from_t *uri=(osip_from_t*)addr;
2312         if (uri->url->host!=NULL){
2313                 osip_free(uri->url->host);
2314                 uri->url->host=NULL;
2315         }
2316         if (host)
2317                 uri->url->host=osip_strdup(host);
2318 }
2319
2320 void sal_address_set_port(SalAddress *addr, const char *port){
2321         osip_from_t *uri=(osip_from_t*)addr;
2322         if (uri->url->port!=NULL){
2323                 osip_free(uri->url->port);
2324                 uri->url->port=NULL;
2325         }
2326         if (port)
2327                 uri->url->port=osip_strdup(port);
2328 }
2329
2330 void sal_address_set_port_int(SalAddress *uri, int port){
2331         char tmp[12];
2332         if (port==5060){
2333                 /*this is the default, special case to leave the port field blank*/
2334                 sal_address_set_port(uri,NULL);
2335                 return;
2336         }
2337         snprintf(tmp,sizeof(tmp),"%i",port);
2338         sal_address_set_port(uri,tmp);
2339 }
2340
2341 void sal_address_clean(SalAddress *addr){
2342         osip_generic_param_freelist(& ((osip_from_t*)addr)->gen_params);
2343         osip_uri_param_freelist(& ((osip_from_t*)addr)->url->url_params);
2344 }
2345
2346 char *sal_address_as_string(const SalAddress *u){
2347         char *tmp,*ret;
2348         osip_from_t *from=(osip_from_t *)u;
2349         char *old_displayname=NULL;
2350         /* hack to force use of quotes around the displayname*/
2351         if (from->displayname!=NULL
2352             && from->displayname[0]!='"'){
2353                 old_displayname=from->displayname;
2354                 from->displayname=osip_enquote(from->displayname);
2355         }
2356         osip_from_to_str(from,&tmp);
2357         if (old_displayname!=NULL){
2358                 ms_free(from->displayname);
2359                 from->displayname=old_displayname;
2360         }
2361         ret=ms_strdup(tmp);
2362         osip_free(tmp);
2363         return ret;
2364 }
2365
2366 char *sal_address_as_string_uri_only(const SalAddress *u){
2367         char *tmp=NULL,*ret;
2368         osip_uri_to_str(((osip_from_t*)u)->url,&tmp);
2369         ret=ms_strdup(tmp);
2370         osip_free(tmp);
2371         return ret;
2372 }
2373 void sal_address_set_param(SalAddress *u,const char* name,const char* value) {
2374         osip_uri_param_t *param=NULL;
2375     osip_uri_uparam_get_byname(((osip_from_t*)u)->url,(char*)name,&param);
2376     if (param == NULL){
2377         osip_uri_uparam_add     (((osip_from_t*)u)->url,ms_strdup(name),value ? ms_strdup(value) : NULL);
2378     } else {
2379         osip_free(param->gvalue);
2380         param->gvalue=value ? osip_strdup(value) : NULL;
2381     }
2382
2383 }
2384
2385 void sal_address_destroy(SalAddress *u){
2386         osip_from_free((osip_from_t*)u);
2387 }
2388
2389 void sal_set_keepalive_period(Sal *ctx,unsigned int value) {
2390         ctx->keepalive_period=value;
2391         eXosip_set_option (EXOSIP_OPT_UDP_KEEP_ALIVE, &value);
2392 }
2393 unsigned int sal_get_keepalive_period(Sal *ctx) {
2394         return ctx->keepalive_period;
2395 }
2396
2397 const char * sal_address_get_port(const SalAddress *addr) {
2398         const osip_from_t *u=(const osip_from_t*)addr;
2399         return null_if_empty(u->url->port);
2400 }
2401
2402 int sal_address_get_port_int(const SalAddress *uri) {
2403         const char* port = sal_address_get_port(uri);
2404         if (port != NULL) {
2405                 return atoi(port);
2406         } else {
2407                 return 5060;
2408         }
2409 }
2410 SalTransport sal_address_get_transport(const SalAddress* addr) {
2411     const osip_from_t *u=(const osip_from_t*)addr;
2412     osip_uri_param_t *transport_param=NULL;
2413     osip_uri_uparam_get_byname(u->url,"transport",&transport_param);
2414     if (transport_param == NULL){
2415         return SalTransportUDP;
2416     }  else {
2417         return sal_transport_parse(transport_param->gvalue);
2418     }
2419 }
2420 void sal_address_set_transport(SalAddress* addr,SalTransport transport) {
2421     sal_address_set_param(addr, "transport", sal_transport_to_string(transport));
2422 }
2423
2424 /* sends a reinvite. Local media description may have changed by application since call establishment*/
2425 int sal_call_update(SalOp *h, const char *subject){
2426         int err=0;
2427         osip_message_t *reinvite=NULL;
2428
2429         eXosip_lock();
2430         if(eXosip_call_build_request(h->did,"INVITE",&reinvite) != 0 || reinvite==NULL){
2431                 eXosip_unlock();
2432                 return -1;
2433         }
2434         eXosip_unlock();
2435         osip_message_set_subject(reinvite,subject);
2436         osip_message_set_allow(reinvite, "INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO");
2437         if (h->base.contact){
2438                 _osip_list_set_empty(&reinvite->contacts,(void (*)(void*))osip_contact_free);
2439                 osip_message_set_contact(reinvite,h->base.contact);
2440         }
2441         if (h->base.root->session_expires!=0){
2442                 osip_message_set_header(reinvite, "Session-expires", "200");
2443                 osip_message_set_supported(reinvite, "timer");
2444         }
2445         if (h->base.local_media){
2446                 h->sdp_offering=TRUE;
2447                 set_sdp_from_desc(reinvite,h->base.local_media);
2448         }else h->sdp_offering=FALSE;
2449         eXosip_lock();
2450         err = eXosip_call_send_request(h->did, reinvite);
2451         eXosip_unlock();
2452         return err;
2453 }
2454 void sal_reuse_authorization(Sal *ctx, bool_t value) {
2455         ctx->reuse_authorization=value;
2456 }