sjero.net Git - linphone/blob - coreapi/sal_eXosip2.c

   1 /*
   2 linphone
   3 Copyright (C) 2010  Simon MORLAT (simon.morlat@free.fr)
   4
   5 This program is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU General Public License
   7 as published by the Free Software Foundation; either version 2
   8 of the License, or (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19
  20 #include "sal_eXosip2.h"
  21
  22 #include "offeranswer.h"
  23
  24
  25 static void _osip_list_set_empty(osip_list_t *l, void (*freefunc)(void*)){
  26         void *data;
  27         while((data=osip_list_get(l,0))!=NULL){
  28                 osip_list_remove(l,0);
  29                 freefunc(data);
  30         }
  31 }
  32
  33 void sal_get_default_local_ip(Sal *sal, int address_family,char *ip, size_t iplen){
  34         if (eXosip_guess_localip(address_family,ip,iplen)<0){
  35                 /*default to something */
  36                 strncpy(ip,address_family==AF_INET6 ? "::1" : "127.0.0.1",iplen);
  37                 ms_error("Could not find default routable ip address !");
  38         }
  39 }
  40
  41 static SalOp * sal_find_register(Sal *sal, int rid){
  42         const MSList *elem;
  43         SalOp *op;
  44         for(elem=sal->registers;elem!=NULL;elem=elem->next){
  45                 op=(SalOp*)elem->data;
  46                 if (op->rid==rid) return op;
  47         }
  48         return NULL;
  49 }
  50
  51 static void sal_add_register(Sal *sal, SalOp *op){
  52         sal->registers=ms_list_append(sal->registers,op);
  53 }
  54
  55 static void sal_remove_register(Sal *sal, int rid){
  56         MSList *elem;
  57         SalOp *op;
  58         for(elem=sal->registers;elem!=NULL;elem=elem->next){
  59                 op=(SalOp*)elem->data;
  60                 if (op->rid==rid) {
  61                         sal->registers=ms_list_remove_link(sal->registers,elem);
  62                         return;
  63                 }
  64         }
  65 }
  66
  67 static SalOp * sal_find_other(Sal *sal, osip_message_t *response){
  68         const MSList *elem;
  69         SalOp *op;
  70         osip_call_id_t *callid=osip_message_get_call_id(response);
  71         if (callid==NULL) {
  72                 ms_error("There is no call-id in this response !");
  73                 return NULL;
  74         }
  75         for(elem=sal->other_transactions;elem!=NULL;elem=elem->next){
  76                 op=(SalOp*)elem->data;
  77                 if (osip_call_id_match(callid,op->call_id)==0) return op;
  78         }
  79         return NULL;
  80 }
  81
  82 static void sal_add_other(Sal *sal, SalOp *op, osip_message_t *request){
  83         osip_call_id_t *callid=osip_message_get_call_id(request);
  84         if (callid==NULL) {
  85                 ms_error("There is no call id in the request !");
  86                 return;
  87         }
  88         osip_call_id_clone(callid,&op->call_id);
  89         sal->other_transactions=ms_list_append(sal->other_transactions,op);
  90 }
  91
  92 static void sal_remove_other(Sal *sal, SalOp *op){
  93         sal->other_transactions=ms_list_remove(sal->other_transactions,op);
  94 }
  95
  96
  97 static void sal_add_pending_auth(Sal *sal, SalOp *op){
  98         sal->pending_auths=ms_list_append(sal->pending_auths,op);
  99 }
 100
 101
 102 static void sal_remove_pending_auth(Sal *sal, SalOp *op){
 103         sal->pending_auths=ms_list_remove(sal->pending_auths,op);
 104 }
 105
 106 void sal_exosip_fix_route(SalOp *op){
 107         if (sal_op_get_route(op)!=NULL){
 108                 osip_route_t *rt=NULL;
 109                 osip_uri_param_t *lr_param=NULL;
 110
 111                 osip_route_init(&rt);
 112                 if (osip_route_parse(rt,sal_op_get_route(op))<0){
 113                         ms_warning("Bad route  %s!",sal_op_get_route(op));
 114                         sal_op_set_route(op,NULL);
 115                 }else{
 116                         /* check if the lr parameter is set , if not add it */
 117                         osip_uri_uparam_get_byname(rt->url, "lr", &lr_param);
 118                         if (lr_param==NULL){
 119                                 char *tmproute;
 120                                 osip_uri_uparam_add(rt->url,osip_strdup("lr"),NULL);
 121                                 osip_route_to_str(rt,&tmproute);
 122                                 sal_op_set_route(op,tmproute);
 123                                 osip_free(tmproute);
 124                         }
 125                 }
 126                 osip_route_free(rt);
 127         }
 128 }
 129
 130 SalOp * sal_op_new(Sal *sal){
 131         SalOp *op=ms_new(SalOp,1);
 132         __sal_op_init(op,sal);
 133         op->cid=op->did=op->tid=op->rid=op->nid=op->sid=-1;
 134         op->result=NULL;
 135         op->supports_session_timers=FALSE;
 136         op->sdp_offering=TRUE;
 137         op->pending_auth=NULL;
 138         op->sdp_answer=NULL;
 139         op->reinvite=FALSE;
 140         op->call_id=NULL;
 141         return op;
 142 }
 143
 144 void sal_op_release(SalOp *op){
 145         if (op->sdp_answer)
 146                 sdp_message_free(op->sdp_answer);
 147         if (op->pending_auth)
 148                 eXosip_event_free(op->pending_auth);
 149         if (op->rid!=-1){
 150                 sal_remove_register(op->base.root,op->rid);
 151         }
 152         if (op->cid!=-1){
 153                 ms_message("Cleaning cid %i",op->cid);
 154                 eXosip_call_set_reference(op->cid,NULL);
 155         }
 156         if (op->sid!=-1){
 157                 sal_remove_out_subscribe(op->base.root,op);
 158         }
 159         if (op->nid!=-1){
 160                 sal_remove_in_subscribe(op->base.root,op);
 161         }
 162         if (op->pending_auth){
 163                 sal_remove_pending_auth(op->base.root,op);
 164         }
 165         if (op->result)
 166                 sal_media_description_unref(op->result);
 167         if (op->call_id){
 168                 sal_remove_other(op->base.root,op);
 169                 osip_call_id_free(op->call_id);
 170         }
 171         __sal_op_free(op);
 172 }
 173
 174 static void _osip_trace_func(char *fi, int li, osip_trace_level_t level, char *chfr, va_list ap){
 175         int ortp_level=ORTP_DEBUG;
 176         switch(level){
 177                 case OSIP_INFO1:
 178                 case OSIP_INFO2:
 179                 case OSIP_INFO3:
 180                 case OSIP_INFO4:
 181                         ortp_level=ORTP_MESSAGE;
 182                         break;
 183                 case OSIP_WARNING:
 184                         ortp_level=ORTP_WARNING;
 185                         break;
 186                 case OSIP_ERROR:
 187                 case OSIP_BUG:
 188                         ortp_level=ORTP_ERROR;
 189                         break;
 190                 case OSIP_FATAL:
 191                         ortp_level=ORTP_FATAL;
 192                         break;
 193                 case END_TRACE_LEVEL:
 194                         break;
 195         }
 196         if (ortp_log_level_enabled(level)){
 197                 int len=strlen(chfr);
 198                 char *chfrdup=ortp_strdup(chfr);
 199                 /*need to remove endline*/
 200                 if (len>1){
 201                         if (chfrdup[len-1]=='\n')
 202                                 chfrdup[len-1]='\0';
 203                         if (chfrdup[len-2]=='\r')
 204                                 chfrdup[len-2]='\0';
 205                 }
 206                 ortp_logv(ortp_level,chfrdup,ap);
 207                 ortp_free(chfrdup);
 208         }
 209 }
 210
 211
 212 Sal * sal_init(){
 213         static bool_t firsttime=TRUE;
 214         if (firsttime){
 215                 osip_trace_initialize_func (OSIP_INFO4,&_osip_trace_func);
 216                 firsttime=FALSE;
 217         }
 218         eXosip_init();
 219         return ms_new0(Sal,1);
 220 }
 221
 222 void sal_uninit(Sal* sal){
 223         eXosip_quit();
 224         ms_free(sal);
 225 }
 226
 227 void sal_set_user_pointer(Sal *sal, void *user_data){
 228         sal->up=user_data;
 229 }
 230
 231 void *sal_get_user_pointer(const Sal *sal){
 232         return sal->up;
 233 }
 234
 235 static void unimplemented_stub(){
 236         ms_warning("Unimplemented SAL callback");
 237 }
 238
 239 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs){
 240         memcpy(&ctx->callbacks,cbs,sizeof(*cbs));
 241         if (ctx->callbacks.call_received==NULL)
 242                 ctx->callbacks.call_received=(SalOnCallReceived)unimplemented_stub;
 243         if (ctx->callbacks.call_ringing==NULL)
 244                 ctx->callbacks.call_ringing=(SalOnCallRinging)unimplemented_stub;
 245         if (ctx->callbacks.call_accepted==NULL)
 246                 ctx->callbacks.call_accepted=(SalOnCallAccepted)unimplemented_stub;
 247         if (ctx->callbacks.call_failure==NULL)
 248                 ctx->callbacks.call_failure=(SalOnCallFailure)unimplemented_stub;
 249         if (ctx->callbacks.call_terminated==NULL)
 250                 ctx->callbacks.call_terminated=(SalOnCallTerminated)unimplemented_stub;
 251         if (ctx->callbacks.call_updated==NULL)
 252                 ctx->callbacks.call_updated=(SalOnCallUpdated)unimplemented_stub;
 253         if (ctx->callbacks.auth_requested==NULL)
 254                 ctx->callbacks.auth_requested=(SalOnAuthRequested)unimplemented_stub;
 255         if (ctx->callbacks.auth_success==NULL)
 256                 ctx->callbacks.auth_success=(SalOnAuthSuccess)unimplemented_stub;
 257         if (ctx->callbacks.register_success==NULL)
 258                 ctx->callbacks.register_success=(SalOnRegisterSuccess)unimplemented_stub;
 259         if (ctx->callbacks.register_failure==NULL)
 260                 ctx->callbacks.register_failure=(SalOnRegisterFailure)unimplemented_stub;
 261         if (ctx->callbacks.dtmf_received==NULL)
 262                 ctx->callbacks.dtmf_received=(SalOnDtmfReceived)unimplemented_stub;
 263         if (ctx->callbacks.notify==NULL)
 264                 ctx->callbacks.notify=(SalOnNotify)unimplemented_stub;
 265         if (ctx->callbacks.subscribe_received==NULL)
 266                 ctx->callbacks.subscribe_received=(SalOnSubscribeReceived)unimplemented_stub;
 267         if (ctx->callbacks.text_received==NULL)
 268                 ctx->callbacks.text_received=(SalOnTextReceived)unimplemented_stub;
 269         if (ctx->callbacks.internal_message==NULL)
 270                 ctx->callbacks.internal_message=(SalOnInternalMsg)unimplemented_stub;
 271         if (ctx->callbacks.ping_reply==NULL)
 272                 ctx->callbacks.ping_reply=(SalOnPingReply)unimplemented_stub;
 273 }
 274
 275 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure){
 276         int err;
 277         bool_t ipv6;
 278         int proto=IPPROTO_UDP;
 279
 280         if (ctx->running) eXosip_quit();
 281         eXosip_init();
 282         err=0;
 283         eXosip_set_option(13,&err); /*13=EXOSIP_OPT_SRV_WITH_NAPTR, as it is an enum value, we can't use it unless we are sure of the
 284                                         version of eXosip, which is not the case*/
 285         /*see if it looks like an IPv6 address*/
 286         ipv6=strchr(addr,':')!=NULL;
 287         eXosip_enable_ipv6(ipv6);
 288
 289         if (tr!=SalTransportDatagram || is_secure){
 290                 ms_fatal("SIP over TCP or TLS or DTLS is not supported yet.");
 291                 return -1;
 292         }
 293
 294         err=eXosip_listen_addr(proto, addr, port, ipv6 ?  PF_INET6 : PF_INET, 0);
 295         return err;
 296 }
 297
 298 void sal_set_user_agent(Sal *ctx, const char *user_agent){
 299         eXosip_set_user_agent(user_agent);
 300 }
 301
 302 void sal_use_session_timers(Sal *ctx, int expires){
 303         ctx->session_expires=expires;
 304 }
 305
 306 MSList *sal_get_pending_auths(Sal *sal){
 307         return ms_list_copy(sal->pending_auths);
 308 }
 309
 310 static int extract_received_rport(osip_message_t *msg, const char **received, int *rportval){
 311         osip_via_t *via=NULL;
 312         osip_generic_param_t *param=NULL;
 313         const char *rport;
 314
 315         osip_message_get_via(msg,0,&via);
 316         if (!via) return -1;
 317         osip_via_param_get_byname(via,"rport",&param);
 318         if (param) {
 319                 rport=param->gvalue;
 320                 if (rport && rport[0]!='\0') *rportval=atoi(rport);
 321                 else *rportval=5060;
 322         }
 323         param=NULL;
 324         osip_via_param_get_byname(via,"received",&param);
 325         if (param) *received=param->gvalue;
 326         else return -1;
 327         return 0;
 328 }
 329
 330 static void set_sdp(osip_message_t *sip,sdp_message_t *msg){
 331         int sdplen;
 332         char clen[10];
 333         char *sdp=NULL;
 334         sdp_message_to_str(msg,&sdp);
 335         sdplen=strlen(sdp);
 336         snprintf(clen,sizeof(clen),"%i",sdplen);
 337         osip_message_set_body(sip,sdp,sdplen);
 338         osip_message_set_content_type(sip,"application/sdp");
 339         osip_message_set_content_length(sip,clen);
 340         osip_free(sdp);
 341 }
 342
 343 static void set_sdp_from_desc(osip_message_t *sip, const SalMediaDescription *desc){
 344         sdp_message_t *msg=media_description_to_sdp(desc);
 345         if (msg==NULL) {
 346                 ms_error("Fail to print sdp message !");
 347                 return;
 348         }
 349         set_sdp(sip,msg);
 350         sdp_message_free(msg);
 351 }
 352
 353 static void sdp_process(SalOp *h){
 354         ms_message("Doing SDP offer/answer process");
 355         if (h->result){
 356                 sal_media_description_unref(h->result);
 357         }
 358         h->result=sal_media_description_new();
 359         if (h->sdp_offering){
 360                 offer_answer_initiate_outgoing(h->base.local_media,h->base.remote_media,h->result);
 361         }else{
 362                 int i;
 363                 offer_answer_initiate_incoming(h->base.local_media,h->base.remote_media,h->result);
 364                 h->sdp_answer=media_description_to_sdp(h->result);
 365                 strcpy(h->result->addr,h->base.remote_media->addr);
 366                 for(i=0;i<h->result->nstreams;++i){
 367                         if (h->result->streams[i].port>0){
 368                                 strcpy(h->result->streams[i].addr,h->base.remote_media->streams[i].addr);
 369                                 h->result->streams[i].ptime=h->base.remote_media->streams[i].ptime;
 370                                 h->result->streams[i].bandwidth=h->base.remote_media->streams[i].bandwidth;
 371                                 h->result->streams[i].port=h->base.remote_media->streams[i].port;
 372                         }
 373                 }
 374         }
 375
 376 }
 377
 378 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc){
 379         if (desc)
 380                 sal_media_description_ref(desc);
 381         if (h->base.local_media)
 382                 sal_media_description_unref(h->base.local_media);
 383         h->base.local_media=desc;
 384         return 0;
 385 }
 386
 387 int sal_call(SalOp *h, const char *from, const char *to){
 388         int err;
 389         osip_message_t *invite=NULL;
 390         sal_op_set_from(h,from);
 391         sal_op_set_to(h,to);
 392         sal_exosip_fix_route(h);
 393         err=eXosip_call_build_initial_invite(&invite,to,from,sal_op_get_route(h),"Phone call");
 394         if (err!=0){
 395                 ms_error("Could not create call.");
 396                 return -1;
 397         }
 398         if (h->base.contact){
 399                 _osip_list_set_empty(&invite->contacts,(void (*)(void*))osip_contact_free);
 400                 osip_message_set_contact(invite,h->base.contact);
 401         }
 402         if (h->base.root->session_expires!=0){
 403                 osip_message_set_header(invite, "Session-expires", "200");
 404                 osip_message_set_supported(invite, "timer");
 405         }
 406         if (h->base.local_media){
 407                 h->sdp_offering=TRUE;
 408                 set_sdp_from_desc(invite,h->base.local_media);
 409         }else h->sdp_offering=FALSE;
 410         eXosip_lock();
 411         err=eXosip_call_send_initial_invite(invite);
 412         eXosip_unlock();
 413         h->cid=err;
 414         if (err<0){
 415                 ms_error("Fail to send invite !");
 416                 return -1;
 417         }else{
 418                 eXosip_call_set_reference(h->cid,h);
 419         }
 420         return 0;
 421 }
 422
 423 int sal_call_notify_ringing(SalOp *h){
 424         eXosip_lock();
 425         eXosip_call_send_answer(h->tid,180,NULL);
 426         eXosip_unlock();
 427         return 0;
 428 }
 429
 430 int sal_call_accept(SalOp * h){
 431         osip_message_t *msg;
 432         const char *contact=sal_op_get_contact(h);
 433         /* sends a 200 OK */
 434         int err=eXosip_call_build_answer(h->tid,200,&msg);
 435         if (err<0 || msg==NULL){
 436                 ms_error("Fail to build answer for call: err=%i",err);
 437                 return -1;
 438         }
 439         if (h->base.root->session_expires!=0){
 440                 if (h->supports_session_timers) osip_message_set_supported(msg, "timer");
 441         }
 442
 443         if (contact) {
 444                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 445                 osip_message_set_contact(msg,contact);
 446         }
 447
 448         if (h->base.local_media){
 449                 /*this is the case where we received an invite without SDP*/
 450                 if (h->sdp_offering) {
 451                         set_sdp_from_desc(msg,h->base.local_media);
 452                 }else{
 453                         if (h->sdp_answer)
 454                                 set_sdp(msg,h->sdp_answer);
 455                 }
 456         }else{
 457                 ms_error("You are accepting a call but not defined any media capabilities !");
 458         }
 459         eXosip_call_send_answer(h->tid,200,msg);
 460         return 0;
 461 }
 462
 463 int sal_call_decline(SalOp *h, SalReason reason, const char *redirect){
 464         if (reason==SalReasonBusy){
 465                 eXosip_lock();
 466                 eXosip_call_send_answer(h->tid,486,NULL);
 467                 eXosip_unlock();
 468         }
 469         else if (reason==SalReasonTemporarilyUnavailable){
 470                 eXosip_lock();
 471                 eXosip_call_send_answer(h->tid,480,NULL);
 472                 eXosip_unlock();
 473         }else if (reason==SalReasonDoNotDisturb){
 474                 eXosip_lock();
 475                 eXosip_call_send_answer(h->tid,600,NULL);
 476                 eXosip_unlock();
 477         }else if (reason==SalReasonMedia){
 478                 eXosip_lock();
 479                 eXosip_call_send_answer(h->tid,415,NULL);
 480                 eXosip_unlock();
 481         }else if (redirect!=NULL && reason==SalReasonRedirect){
 482                 osip_message_t *msg;
 483                 int code;
 484                 if (strstr(redirect,"sip:")!=0) code=302;
 485                 else code=380;
 486                 eXosip_lock();
 487                 eXosip_call_build_answer(h->tid,code,&msg);
 488                 osip_message_set_contact(msg,redirect);
 489                 eXosip_call_send_answer(h->tid,code,msg);
 490                 eXosip_unlock();
 491         }else sal_call_terminate(h);
 492         return 0;
 493 }
 494
 495 SalMediaDescription * sal_call_get_final_media_description(SalOp *h){
 496         if (h->base.local_media && h->base.remote_media && !h->result){
 497                 sdp_process(h);
 498         }
 499         return h->result;
 500 }
 501
 502 int sal_ping(SalOp *op, const char *from, const char *to){
 503         osip_message_t *options=NULL;
 504
 505         sal_op_set_from(op,from);
 506         sal_op_set_to(op,to);
 507         eXosip_options_build_request (&options, sal_op_get_to(op),
 508                         sal_op_get_from(op),sal_op_get_route(op));
 509         if (options){
 510                 if (op->base.root->session_expires!=0){
 511                         osip_message_set_header(options, "Session-expires", "200");
 512                         osip_message_set_supported(options, "timer");
 513                 }
 514                 sal_add_other(sal_op_get_sal(op),op,options);
 515                 return eXosip_options_send_request(options);
 516         }
 517         return -1;
 518 }
 519
 520 int sal_refer(SalOp *h, const char *refer_to){
 521         osip_message_t *msg=NULL;
 522         int err=0;
 523         eXosip_lock();
 524         eXosip_call_build_refer(h->did,refer_to, &msg);
 525         if (msg) err=eXosip_call_send_request(h->did, msg);
 526         else err=-1;
 527         eXosip_unlock();
 528         return err;
 529 }
 530
 531 int sal_call_send_dtmf(SalOp *h, char dtmf){
 532         osip_message_t *msg=NULL;
 533         char dtmf_body[128];
 534         char clen[10];
 535
 536         eXosip_lock();
 537         eXosip_call_build_info(h->did,&msg);
 538         if (msg){
 539                 snprintf(dtmf_body, sizeof(dtmf_body), "Signal=%c\r\nDuration=250\r\n", dtmf);
 540                 osip_message_set_body(msg,dtmf_body,strlen(dtmf_body));
 541                 osip_message_set_content_type(msg,"application/dtmf-relay");
 542                 snprintf(clen,sizeof(clen),"%lu",(unsigned long)strlen(dtmf_body));
 543                 osip_message_set_content_length(msg,clen);
 544                 eXosip_call_send_request(h->did,msg);
 545         }
 546         eXosip_unlock();
 547         return 0;
 548 }
 549
 550 int sal_call_terminate(SalOp *h){
 551         eXosip_lock();
 552         eXosip_call_terminate(h->cid,h->did);
 553         eXosip_call_set_reference(h->cid,NULL);
 554         eXosip_unlock();
 555         return 0;
 556 }
 557
 558 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info){
 559         if (h->pending_auth){
 560                 const char *userid;
 561                 if (info->userid==NULL || info->userid[0]=='\0') userid=info->username;
 562                 else userid=info->userid;
 563                 ms_message("Authentication info for %s %s added to eXosip", info->username,info->realm);
 564                 eXosip_add_authentication_info (info->username,userid,
 565                                       info->password, NULL,info->realm);
 566                 eXosip_lock();
 567                 eXosip_default_action(h->pending_auth);
 568                 eXosip_unlock();
 569                 ms_message("eXosip_default_action() done");
 570                 eXosip_clear_authentication_info();
 571                 eXosip_event_free(h->pending_auth);
 572                 sal_remove_pending_auth(sal_op_get_sal(h),h);
 573                 h->pending_auth=NULL;
 574         }
 575 }
 576
 577 static void set_network_origin(SalOp *op, osip_message_t *req){
 578         const char *received=NULL;
 579         int rport=5060;
 580         char origin[64];
 581         if (extract_received_rport(req,&received,&rport)!=0){
 582                 osip_via_t *via=NULL;
 583                 char *tmp;
 584                 osip_message_get_via(req,0,&via);
 585                 received=osip_via_get_host(via);
 586                 tmp=osip_via_get_port(via);
 587                 if (tmp) rport=atoi(tmp);
 588         }
 589         snprintf(origin,sizeof(origin)-1,"sip:%s:%i",received,rport);
 590         __sal_op_set_network_origin(op,origin);
 591 }
 592
 593 static void inc_new_call(Sal *sal, eXosip_event_t *ev){
 594         SalOp *op=sal_op_new(sal);
 595         osip_from_t *from,*to;
 596         char *tmp;
 597         sdp_message_t *sdp=eXosip_get_sdp_info(ev->request);
 598
 599         set_network_origin(op,ev->request);
 600
 601         if (sdp){
 602                 op->sdp_offering=FALSE;
 603                 op->base.remote_media=sal_media_description_new();
 604                 sdp_to_media_description(sdp,op->base.remote_media);
 605                 sdp_message_free(sdp);
 606         }else op->sdp_offering=TRUE;
 607
 608         from=osip_message_get_from(ev->request);
 609         to=osip_message_get_to(ev->request);
 610         osip_from_to_str(from,&tmp);
 611         sal_op_set_from(op,tmp);
 612         osip_free(tmp);
 613         osip_from_to_str(to,&tmp);
 614         sal_op_set_to(op,tmp);
 615         osip_free(tmp);
 616
 617         op->tid=ev->tid;
 618         op->cid=ev->cid;
 619         op->did=ev->did;
 620
 621         eXosip_call_set_reference(op->cid,op);
 622         sal->callbacks.call_received(op);
 623 }
 624
 625 static void handle_reinvite(Sal *sal,  eXosip_event_t *ev){
 626         SalOp *op=(SalOp*)ev->external_reference;
 627         sdp_message_t *sdp;
 628         osip_message_t *msg=NULL;
 629
 630         if (op==NULL) {
 631                 ms_warning("Reinvite for non-existing operation !");
 632                 return;
 633         }
 634         op->reinvite=TRUE;
 635         op->tid=ev->tid;
 636         sdp=eXosip_get_sdp_info(ev->request);
 637         if (op->base.remote_media){
 638                 sal_media_description_unref(op->base.remote_media);
 639                 op->base.remote_media=NULL;
 640         }
 641         eXosip_lock();
 642         eXosip_call_build_answer(ev->tid,200,&msg);
 643         eXosip_unlock();
 644         if (msg==NULL) return;
 645         if (op->base.root->session_expires!=0){
 646                 if (op->supports_session_timers) osip_message_set_supported(msg, "timer");
 647         }
 648         if (op->base.contact){
 649                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 650                 osip_message_set_contact(msg,op->base.contact);
 651         }
 652         if (sdp){
 653                 op->sdp_offering=FALSE;
 654                 op->base.remote_media=sal_media_description_new();
 655                 sdp_to_media_description(sdp,op->base.remote_media);
 656                 sdp_message_free(sdp);
 657                 sdp_process(op);
 658                 set_sdp(msg,op->sdp_answer);
 659         }else {
 660                 op->sdp_offering=TRUE;
 661                 set_sdp_from_desc(msg,op->base.local_media);
 662         }
 663         eXosip_lock();
 664         eXosip_call_send_answer(ev->tid,200,msg);
 665         eXosip_unlock();
 666 }
 667
 668 static void handle_ack(Sal *sal,  eXosip_event_t *ev){
 669         SalOp *op=(SalOp*)ev->external_reference;
 670         sdp_message_t *sdp;
 671
 672         if (op==NULL) {
 673                 ms_warning("ack for non-existing call !");
 674                 return;
 675         }
 676         sdp=eXosip_get_sdp_info(ev->ack);
 677         if (sdp){
 678                 op->base.remote_media=sal_media_description_new();
 679                 sdp_to_media_description(sdp,op->base.remote_media);
 680                 sdp_process(op);
 681                 sdp_message_free(sdp);
 682         }
 683         if (op->reinvite){
 684                 sal->callbacks.call_updated(op);
 685                 op->reinvite=FALSE;
 686         }else{
 687                 sal->callbacks.call_ack(op);
 688         }
 689 }
 690
 691 static void update_contact_from_response(SalOp *op, osip_message_t *response){
 692         const char *received;
 693         int rport;
 694         if (extract_received_rport(response,&received,&rport)==0){
 695                 const char *contact=sal_op_get_contact(op);
 696                 if (!contact){
 697                         /*no contact given yet, use from instead*/
 698                         contact=sal_op_get_from(op);
 699                 }
 700                 if (contact){
 701                         SalAddress *addr=sal_address_new(contact);
 702                         char *tmp;
 703                         sal_address_set_domain(addr,received);
 704                         sal_address_set_port_int(addr,rport);
 705                         tmp=sal_address_as_string(addr);
 706                         ms_message("Contact address updated to %s for this dialog",tmp);
 707                         sal_op_set_contact(op,tmp);
 708                         ms_free(tmp);
 709                 }
 710         }
 711 }
 712
 713 static int call_proceeding(Sal *sal, eXosip_event_t *ev){
 714         SalOp *op=(SalOp*)ev->external_reference;
 715
 716         if (op==NULL) {
 717                 ms_warning("This call has been canceled.");
 718                 eXosip_lock();
 719                 eXosip_call_terminate(ev->cid,ev->did);
 720                 eXosip_unlock();
 721                 return -1;
 722         }
 723         op->did=ev->did;
 724         op->tid=ev->tid;
 725
 726         /* update contact if received and rport are set by the server
 727          note: will only be used by remote for next INVITE, if any...*/
 728         update_contact_from_response(op,ev->response);
 729         return 0;
 730 }
 731
 732 static void call_ringing(Sal *sal, eXosip_event_t *ev){
 733         sdp_message_t *sdp;
 734         SalOp *op;
 735         if (call_proceeding(sal, ev)==-1) return;
 736         op=(SalOp*)ev->external_reference;
 737         sdp=eXosip_get_sdp_info(ev->response);
 738         if (sdp){
 739                 op->base.remote_media=sal_media_description_new();
 740                 sdp_to_media_description(sdp,op->base.remote_media);
 741                 sdp_message_free(sdp);
 742                 if (op->base.local_media) sdp_process(op);
 743         }
 744         sal->callbacks.call_ringing(op);
 745 }
 746
 747 static void call_accepted(Sal *sal, eXosip_event_t *ev){
 748         sdp_message_t *sdp;
 749         osip_message_t *msg=NULL;
 750         SalOp *op;
 751         const char *contact;
 752
 753         op=(SalOp*)ev->external_reference;
 754         if (op==NULL){
 755                 ms_error("A closed call is accepted ?");
 756                 return;
 757         }
 758         sdp=eXosip_get_sdp_info(ev->response);
 759         if (sdp){
 760                 op->base.remote_media=sal_media_description_new();
 761                 sdp_to_media_description(sdp,op->base.remote_media);
 762                 sdp_message_free(sdp);
 763                 if (op->base.local_media) sdp_process(op);
 764         }
 765         eXosip_call_build_ack(ev->did,&msg);
 766         contact=sal_op_get_contact(op);
 767         if (contact) {
 768                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 769                 osip_message_set_contact(msg,contact);
 770         }
 771         if (op->sdp_answer)
 772                         set_sdp(msg,op->sdp_answer);
 773         eXosip_call_send_ack(ev->did,msg);
 774         sal->callbacks.call_accepted(op);
 775 }
 776
 777 static void call_terminated(Sal *sal, eXosip_event_t *ev){
 778         SalOp *op;
 779         char *from;
 780         op=(SalOp*)ev->external_reference;
 781         if (op==NULL){
 782                 ms_warning("Call terminated for already closed call ?");
 783                 return;
 784         }
 785         osip_from_to_str(ev->request->from,&from);
 786         eXosip_call_set_reference(ev->cid,NULL);
 787         op->cid=-1;
 788         sal->callbacks.call_terminated(op,from);
 789         osip_free(from);
 790 }
 791
 792 static void call_released(Sal *sal, eXosip_event_t *ev){
 793         SalOp *op;
 794         op=(SalOp*)ev->external_reference;
 795         if (op==NULL){
 796                 return;
 797         }
 798         op->cid=-1;
 799         if (op->did==-1)
 800                 sal->callbacks.call_failure(op,SalErrorNoResponse,SalReasonUnknown,NULL);
 801 }
 802
 803 static int get_auth_data_from_response(osip_message_t *resp, const char **realm, const char **username){
 804         const char *prx_realm=NULL,*www_realm=NULL;
 805         osip_proxy_authenticate_t *prx_auth;
 806         osip_www_authenticate_t *www_auth;
 807
 808         *username=osip_uri_get_username(resp->from->url);
 809         prx_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->proxy_authenticates,0);
 810         www_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->www_authenticates,0);
 811         if (prx_auth!=NULL)
 812                 prx_realm=osip_proxy_authenticate_get_realm(prx_auth);
 813         if (www_auth!=NULL)
 814                 www_realm=osip_www_authenticate_get_realm(www_auth);
 815
 816         if (prx_realm){
 817                 *realm=prx_realm;
 818         }else if (www_realm){
 819                 *realm=www_realm;
 820         }else{
 821                 return -1;
 822         }
 823         return 0;
 824 }
 825
 826 static int get_auth_data_from_request(osip_message_t *msg, const char **realm, const char **username){
 827         osip_authorization_t *auth=NULL;
 828         osip_proxy_authorization_t *prx_auth=NULL;
 829
 830         *username=osip_uri_get_username(msg->from->url);
 831         osip_message_get_authorization(msg, 0, &auth);
 832         if (auth){
 833                 *realm=osip_authorization_get_realm(auth);
 834                 return 0;
 835         }
 836         osip_message_get_proxy_authorization(msg,0,&prx_auth);
 837         if (prx_auth){
 838                 *realm=osip_proxy_authorization_get_realm(prx_auth);
 839                 return 0;
 840         }
 841         return -1;
 842 }
 843
 844 static int get_auth_data(eXosip_event_t *ev, const char **realm, const char **username){
 845         if (ev->response && get_auth_data_from_response(ev->response,realm,username)==0) return 0;
 846         if (ev->request && get_auth_data_from_request(ev->request,realm,username)==0) return 0;
 847         return -1;
 848 }
 849
 850 int sal_op_get_auth_requested(SalOp *op, const char **realm, const char **username){
 851         if (op->pending_auth){
 852                 return get_auth_data(op->pending_auth,realm,username);
 853         }
 854         return -1;
 855 }
 856
 857 static SalOp *find_op(Sal *sal, eXosip_event_t *ev){
 858         if (ev->external_reference)
 859                 return (SalOp*)ev->external_reference;
 860         if (ev->rid>0){
 861                 return sal_find_register(sal,ev->rid);
 862         }
 863         if (ev->response) return sal_find_other(sal,ev->response);
 864         return NULL;
 865 }
 866
 867 static bool_t process_authentication(Sal *sal, eXosip_event_t *ev){
 868         SalOp *op;
 869         const char *username,*realm;
 870         op=find_op(sal,ev);
 871         if (op==NULL){
 872                 ms_warning("No operation associated with this authentication !");
 873                 return TRUE;
 874         }
 875         if (get_auth_data(ev,&realm,&username)==0){
 876                 if (op->pending_auth!=NULL)
 877                         eXosip_event_free(op->pending_auth);
 878                 op->pending_auth=ev;
 879                 sal_add_pending_auth (sal,op);
 880                 sal->callbacks.auth_requested(op,realm,username);
 881                 return FALSE;
 882         }
 883         return TRUE;
 884 }
 885
 886 static void authentication_ok(Sal *sal, eXosip_event_t *ev){
 887         SalOp *op;
 888         const char *username,*realm;
 889         op=find_op(sal,ev);
 890         if (op==NULL){
 891                 ms_warning("No operation associated with this authentication_ok!");
 892                 return ;
 893         }
 894         if (get_auth_data(ev,&realm,&username)==0){
 895                 sal->callbacks.auth_success(op,realm,username);
 896         }
 897 }
 898
 899 static bool_t call_failure(Sal *sal, eXosip_event_t *ev){
 900         SalOp *op;
 901         int code=0;
 902         const char *reason=NULL;
 903         SalError error=SalErrorUnknown;
 904         SalReason sr=SalReasonUnknown;
 905
 906         op=(SalOp*)ev->external_reference;
 907
 908         if (op==NULL) {
 909                 ms_warning("Call failure reported for a closed call, ignored.");
 910                 return TRUE;
 911         }
 912
 913         if (ev->response){
 914                 code=osip_message_get_status_code(ev->response);
 915                 reason=osip_message_get_reason_phrase(ev->response);
 916         }
 917         switch(code)
 918         {
 919                 case 401:
 920                 case 407:
 921                         return process_authentication(sal,ev);
 922                         break;
 923                 case 400:
 924                         error=SalErrorUnknown;
 925                 break;
 926                 case 404:
 927                         error=SalErrorFailure;
 928                         sr=SalReasonNotFound;
 929                 break;
 930                 case 415:
 931                         error=SalErrorFailure;
 932                         sr=SalReasonMedia;
 933                 break;
 934                 case 422:
 935                         eXosip_default_action(ev);
 936                         return TRUE;
 937                 break;
 938                 case 480:
 939                         error=SalErrorFailure;
 940                         sr=SalReasonTemporarilyUnavailable;
 941                 case 486:
 942                         error=SalErrorFailure;
 943                         sr=SalReasonBusy;
 944                 break;
 945                 case 487:
 946                 break;
 947                 case 600:
 948                         error=SalErrorFailure;
 949                         sr=SalReasonDoNotDisturb;
 950                 break;
 951                 case 603:
 952                         error=SalErrorFailure;
 953                         sr=SalReasonDeclined;
 954                 break;
 955                 default:
 956                         if (code>0){
 957                                 error=SalErrorFailure;
 958                                 sr=SalReasonUnknown;
 959                         }else error=SalErrorNoResponse;
 960         }
 961         if (code!=487) sal->callbacks.call_failure(op,error,sr,reason);
 962         return TRUE;
 963 }
 964
 965
 966 static void process_media_control_xml(Sal *sal, eXosip_event_t *ev){
 967         SalOp *op=(SalOp*)ev->external_reference;
 968         osip_body_t *body=NULL;
 969
 970         if (op==NULL){
 971                 ms_warning("media control xml received without operation context!");
 972                 return ;
 973         }
 974
 975         osip_message_get_body(ev->request,0,&body);
 976         if (body && body->body!=NULL &&
 977                 strstr(body->body,"picture_fast_update")){
 978                 osip_message_t *ans=NULL;
 979                 ms_message("Receiving VFU request !");
 980                 if (sal->callbacks.vfu_request){
 981                         sal->callbacks.vfu_request(op);
 982                         eXosip_call_build_answer(ev->tid,200,&ans);
 983                         if (ans)
 984                                 eXosip_call_send_answer(ev->tid,200,ans);
 985                 }
 986         }
 987 }
 988
 989 static void process_dtmf_relay(Sal *sal, eXosip_event_t *ev){
 990         SalOp *op=(SalOp*)ev->external_reference;
 991         osip_body_t *body=NULL;
 992
 993         if (op==NULL){
 994                 ms_warning("media dtmf relay received without operation context!");
 995                 return ;
 996         }
 997
 998         osip_message_get_body(ev->request,0,&body);
 999         if (body && body->body!=NULL){
1000                 osip_message_t *ans=NULL;
1001                 const char *name=strstr(body->body,"Signal");
1002                 if (name==NULL) name=strstr(body->body,"signal");
1003                 if (name==NULL) {
1004                         ms_warning("Could not extract the dtmf name from the SIP INFO.");
1005                 }else{
1006                         char tmp[2];
1007                         name+=strlen("signal");
1008                         if (sscanf(name," = %1s",tmp)==1){
1009                                 ms_message("Receiving dtmf %s via SIP INFO.",tmp);
1010                                 if (sal->callbacks.dtmf_received != NULL)
1011                                         sal->callbacks.dtmf_received(op, tmp[0]);
1012                         }
1013                 }
1014                 eXosip_call_build_answer(ev->tid,200,&ans);
1015                 if (ans)
1016                         eXosip_call_send_answer(ev->tid,200,ans);
1017         }
1018 }
1019
1020 static void call_message_new(Sal *sal, eXosip_event_t *ev){
1021         osip_message_t *ans=NULL;
1022         if (ev->request){
1023                 if (MSG_IS_INFO(ev->request)){
1024                         osip_content_type_t *ct;
1025                         ct=osip_message_get_content_type(ev->request);
1026                         if (ct && ct->subtype){
1027                                 if (strcmp(ct->subtype,"media_control+xml")==0)
1028                                         process_media_control_xml(sal,ev);
1029                                 else if (strcmp(ct->subtype,"dtmf-relay")==0)
1030                                         process_dtmf_relay(sal,ev);
1031                                 else {
1032                                         ms_message("Unhandled SIP INFO.");
1033                                         /*send an "Not implemented" answer*/
1034                                         eXosip_lock();
1035                                         eXosip_call_build_answer(ev->tid,501,&ans);
1036                                         if (ans)
1037                                                 eXosip_call_send_answer(ev->tid,501,ans);
1038                                         eXosip_unlock();
1039                                 }
1040                         }else{
1041                                 /*empty SIP INFO, probably to test we are alive. Send an empty answer*/
1042                                 eXosip_lock();
1043                                 eXosip_call_build_answer(ev->tid,200,&ans);
1044                                 if (ans)
1045                                         eXosip_call_send_answer(ev->tid,200,ans);
1046                                 eXosip_unlock();
1047                         }
1048                 }
1049         }else ms_warning("call_message_new: No request ?");
1050 }
1051
1052 static void inc_update(Sal *sal, eXosip_event_t *ev){
1053         osip_message_t *msg=NULL;
1054         ms_message("Processing incoming UPDATE");
1055         eXosip_lock();
1056         eXosip_message_build_answer(ev->tid,200,&msg);
1057         if (msg!=NULL)
1058                 eXosip_message_send_answer(ev->tid,200,msg);
1059         eXosip_unlock();
1060 }
1061
1062 static bool_t comes_from_local_if(osip_message_t *msg){
1063         osip_via_t *via=NULL;
1064         osip_message_get_via(msg,0,&via);
1065         if (via){
1066                 const char *host;
1067                 host=osip_via_get_host(via);
1068                 if (strcmp(host,"127.0.0.1")==0 || strcmp(host,"::1")==0){
1069                         osip_generic_param_t *param=NULL;
1070                         osip_via_param_get_byname(via,"received",&param);
1071                         if (param==NULL) return TRUE;
1072                         if (param->gvalue &&
1073                                 (strcmp(param->gvalue,"127.0.0.1")==0 || strcmp(param->gvalue,"::1")==0)){
1074                                 return TRUE;
1075                         }
1076                 }
1077         }
1078         return FALSE;
1079 }
1080
1081 static void text_received(Sal *sal, eXosip_event_t *ev){
1082         osip_body_t *body=NULL;
1083         char *from=NULL,*msg;
1084
1085         osip_message_get_body(ev->request,0,&body);
1086         if (body==NULL){
1087                 ms_error("Could not get text message from SIP body");
1088                 return;
1089         }
1090         msg=body->body;
1091         osip_from_to_str(ev->request->from,&from);
1092         sal->callbacks.text_received(sal,from,msg);
1093         osip_free(from);
1094 }
1095
1096 static void other_request(Sal *sal, eXosip_event_t *ev){
1097         ms_message("in other_request");
1098         if (ev->request==NULL) return;
1099         if (strcmp(ev->request->sip_method,"MESSAGE")==0){
1100                 text_received(sal,ev);
1101                 eXosip_message_send_answer(ev->tid,200,NULL);
1102         }else if (strcmp(ev->request->sip_method,"OPTIONS")==0){
1103                 osip_message_t *options=NULL;
1104                 eXosip_options_build_answer(ev->tid,200,&options);
1105                 osip_message_set_allow(options,"INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, SUBSCRIBE, NOTIFY, INFO");
1106                 osip_message_set_accept(options,"application/sdp");
1107                 eXosip_options_send_answer(ev->tid,200,options);
1108         }else if (strcmp(ev->request->sip_method,"WAKEUP")==0
1109                 && comes_from_local_if(ev->request)) {
1110                 eXosip_message_send_answer(ev->tid,200,NULL);
1111                 ms_message("Receiving WAKEUP request !");
1112                 sal->callbacks.internal_message(sal,"WAKEUP");
1113         }else if (strncmp(ev->request->sip_method, "REFER", 5) == 0){
1114                 ms_message("Receiving REFER request !");
1115                 if (comes_from_local_if(ev->request)) {
1116                         osip_header_t *h=NULL;
1117                         osip_message_header_get_byname(ev->request,"Refer-To",0,&h);
1118                         eXosip_message_send_answer(ev->tid,200,NULL);
1119                         if (h){
1120                                 sal->callbacks.refer_received(sal,NULL,h->hvalue);
1121                         }
1122                 }else ms_warning("Ignored REFER not coming from this local loopback interface.");
1123         }else if (strncmp(ev->request->sip_method, "UPDATE", 6) == 0){
1124                 inc_update(sal,ev);
1125     }else {
1126                 char *tmp=NULL;
1127                 size_t msglen=0;
1128                 osip_message_to_str(ev->request,&tmp,&msglen);
1129                 if (tmp){
1130                         ms_message("Unsupported request received:\n%s",tmp);
1131                         osip_free(tmp);
1132                 }
1133                 /*answer with a 501 Not implemented*/
1134                 eXosip_message_send_answer(ev->tid,501,NULL);
1135         }
1136 }
1137
1138 static bool_t register_again_with_updated_contact(SalOp *op, osip_message_t *orig_request, osip_message_t *last_answer){
1139         osip_message_t *msg;
1140         const char *received;
1141         int rport;
1142         osip_contact_t *ctt=NULL;
1143         char *tmp;
1144         char port[20];
1145
1146         if (extract_received_rport(last_answer,&received,&rport)==-1) return FALSE;
1147         osip_message_get_contact(orig_request,0,&ctt);
1148         if (strcmp(ctt->url->host,received)==0){
1149                 /*ip address matches, check ports*/
1150                 const char *contact_port=ctt->url->port;
1151                 if (contact_port==NULL || contact_port[0]=='\0')
1152                         contact_port="5060";
1153                 if (atoi(contact_port)==rport){
1154                         ms_message("Register has up to date contact, doing nothing.");
1155                         return FALSE;
1156                 }else ms_message("ports do not match, need to update the register (%s <> %i)", contact_port,rport);
1157         }
1158         eXosip_lock();
1159         msg=NULL;
1160         eXosip_register_build_register(op->rid,op->expires,&msg);
1161         if (msg==NULL){
1162                 eXosip_unlock();
1163                 ms_warning("Fail to create a contact updated register.");
1164                 return FALSE;
1165         }
1166         osip_message_get_contact(msg,0,&ctt);
1167         if (ctt->url->host!=NULL){
1168                 osip_free(ctt->url->host);
1169         }
1170         ctt->url->host=osip_strdup(received);
1171         if (ctt->url->port!=NULL){
1172                 osip_free(ctt->url->port);
1173         }
1174         snprintf(port,sizeof(port),"%i",rport);
1175         ctt->url->port=osip_strdup(port);
1176         eXosip_register_send_register(op->rid,msg);
1177         eXosip_unlock();
1178         osip_contact_to_str(ctt,&tmp);
1179         sal_op_set_contact(op,tmp);
1180         ms_message("Resending new register with updated contact %s",tmp);
1181         ms_free(tmp);
1182         return TRUE;
1183 }
1184
1185 static void registration_success(Sal *sal, eXosip_event_t *ev){
1186         SalOp *op=sal_find_register(sal,ev->rid);
1187         osip_header_t *h=NULL;
1188         bool_t registered;
1189         if (op==NULL){
1190                 ms_error("Receiving register response for unknown operation");
1191                 return;
1192         }
1193         osip_message_get_expires(ev->request,0,&h);
1194         if (h!=NULL && atoi(h->hvalue)!=0){
1195                 registered=TRUE;
1196                 if (!register_again_with_updated_contact(op,ev->request,ev->response)){
1197                         sal->callbacks.register_success(op,registered);
1198                 }
1199         }else registered=FALSE;
1200 }
1201
1202 static bool_t registration_failure(Sal *sal, eXosip_event_t *ev){
1203         int status_code=0;
1204         const char *reason=NULL;
1205         SalOp *op=sal_find_register(sal,ev->rid);
1206         SalReason sr=SalReasonUnknown;
1207         SalError se=SalErrorUnknown;
1208
1209         if (op==NULL){
1210                 ms_error("Receiving register failure for unknown operation");
1211                 return TRUE;
1212         }
1213         if (ev->response){
1214                 status_code=osip_message_get_status_code(ev->response);
1215                 reason=osip_message_get_reason_phrase(ev->response);
1216         }else return TRUE;
1217         switch(status_code){
1218                 case 401:
1219                 case 407:
1220                         return process_authentication(sal,ev);
1221                         break;
1222                 default:
1223                         /* if contact is up to date, process the failure, otherwise resend a new register with
1224                                 updated contact first, just in case the faillure is due to incorrect contact */
1225                         if (register_again_with_updated_contact(op,ev->request,ev->response))
1226                                 return TRUE; /*we are retrying with an updated contact*/
1227                         if (status_code==403){
1228                                 se=SalErrorFailure;
1229                                 sr=SalReasonForbidden;
1230                         }else if (status_code==0){
1231                                 se=SalErrorNoResponse;
1232                         }
1233                         sal->callbacks.register_failure(op,se,sr,reason);
1234         }
1235         return TRUE;
1236 }
1237
1238 static void other_request_reply(Sal *sal,eXosip_event_t *ev){
1239         SalOp *op=find_op(sal,ev);
1240
1241         if (op==NULL){
1242                 ms_warning("other_request_reply(): Receiving response to unknown request.");
1243                 return;
1244         }
1245         if (ev->response){
1246                 update_contact_from_response(op,ev->response);
1247                 sal->callbacks.ping_reply(op);
1248         }
1249 }
1250
1251 static bool_t process_event(Sal *sal, eXosip_event_t *ev){
1252         switch(ev->type){
1253                 case EXOSIP_CALL_ANSWERED:
1254                         ms_message("CALL_ANSWERED\n");
1255                         call_accepted(sal,ev);
1256                         authentication_ok(sal,ev);
1257                         break;
1258                 case EXOSIP_CALL_CLOSED:
1259                 case EXOSIP_CALL_CANCELLED:
1260                         ms_message("CALL_CLOSED or CANCELLED\n");
1261                         call_terminated(sal,ev);
1262                         break;
1263                 case EXOSIP_CALL_TIMEOUT:
1264                 case EXOSIP_CALL_NOANSWER:
1265                         ms_message("CALL_TIMEOUT or NOANSWER\n");
1266                         return call_failure(sal,ev);
1267                         break;
1268                 case EXOSIP_CALL_REQUESTFAILURE:
1269                 case EXOSIP_CALL_GLOBALFAILURE:
1270                 case EXOSIP_CALL_SERVERFAILURE:
1271                         ms_message("CALL_REQUESTFAILURE or GLOBALFAILURE or SERVERFAILURE\n");
1272                         return call_failure(sal,ev);
1273                         break;
1274                 case EXOSIP_CALL_INVITE:
1275                         ms_message("CALL_NEW\n");
1276                         inc_new_call(sal,ev);
1277                         break;
1278                 case EXOSIP_CALL_REINVITE:
1279                         handle_reinvite(sal,ev);
1280                         break;
1281                 case EXOSIP_CALL_ACK:
1282                         ms_message("CALL_ACK");
1283                         handle_ack(sal,ev);
1284                         break;
1285                 case EXOSIP_CALL_REDIRECTED:
1286                         ms_message("CALL_REDIRECTED");
1287                         eXosip_default_action(ev);
1288                         break;
1289                 case EXOSIP_CALL_PROCEEDING:
1290                         ms_message("CALL_PROCEEDING");
1291                         call_proceeding(sal,ev);
1292                         break;
1293                 case EXOSIP_CALL_RINGING:
1294                         ms_message("CALL_RINGING");
1295                         call_ringing(sal,ev);
1296                         break;
1297                 case EXOSIP_CALL_MESSAGE_NEW:
1298                         ms_message("EXOSIP_CALL_MESSAGE_NEW");
1299                         call_message_new(sal,ev);
1300                         break;
1301                 case EXOSIP_CALL_MESSAGE_REQUESTFAILURE:
1302                         if (ev->did<0 && ev->response &&
1303                                 (ev->response->status_code==407 || ev->response->status_code==401)){
1304                                  return process_authentication(sal,ev);
1305                         }
1306                         break;
1307                 case EXOSIP_IN_SUBSCRIPTION_NEW:
1308                         ms_message("CALL_SUBSCRIPTION_NEW ");
1309                         sal_exosip_subscription_recv(sal,ev);
1310                         break;
1311                 case EXOSIP_SUBSCRIPTION_UPDATE:
1312                         ms_message("CALL_SUBSCRIPTION_UPDATE");
1313                         break;
1314                 case EXOSIP_SUBSCRIPTION_NOTIFY:
1315                         ms_message("CALL_SUBSCRIPTION_NOTIFY");
1316                         sal_exosip_notify_recv(sal,ev);
1317                         break;
1318                 case EXOSIP_SUBSCRIPTION_ANSWERED:
1319                         ms_message("EXOSIP_SUBSCRIPTION_ANSWERED, ev->sid=%i, ev->did=%i\n",ev->sid,ev->did);
1320                         sal_exosip_subscription_answered(sal,ev);
1321                         break;
1322                 case EXOSIP_SUBSCRIPTION_CLOSED:
1323                         ms_message("EXOSIP_SUBSCRIPTION_CLOSED\n");
1324                         sal_exosip_subscription_closed(sal,ev);
1325                         break;
1326                 case EXOSIP_CALL_RELEASED:
1327                         ms_message("CALL_RELEASED\n");
1328                         call_released(sal, ev);
1329                         break;
1330                 case EXOSIP_REGISTRATION_FAILURE:
1331                         ms_message("REGISTRATION_FAILURE\n");
1332                         return registration_failure(sal,ev);
1333                         break;
1334                 case EXOSIP_REGISTRATION_SUCCESS:
1335                         authentication_ok(sal,ev);
1336                         registration_success(sal,ev);
1337                         break;
1338                 case EXOSIP_MESSAGE_NEW:
1339                         other_request(sal,ev);
1340                         break;
1341                 case EXOSIP_MESSAGE_PROCEEDING:
1342                 case EXOSIP_MESSAGE_ANSWERED:
1343                 case EXOSIP_MESSAGE_REDIRECTED:
1344                 case EXOSIP_MESSAGE_SERVERFAILURE:
1345                 case EXOSIP_MESSAGE_GLOBALFAILURE:
1346                         other_request_reply(sal,ev);
1347                         break;
1348                 case EXOSIP_MESSAGE_REQUESTFAILURE:
1349                         if (ev->response && (ev->response->status_code == 407 || ev->response->status_code == 401)){
1350                                 return process_authentication(sal,ev);
1351                         }
1352                         break;
1353                 default:
1354                         ms_message("Unhandled exosip event ! %i");
1355                         break;
1356         }
1357         return TRUE;
1358 }
1359
1360 int sal_iterate(Sal *sal){
1361         eXosip_event_t *ev;
1362         while((ev=eXosip_event_wait(0,0))!=NULL){
1363                 if (process_event(sal,ev))
1364                         eXosip_event_free(ev);
1365         }
1366         eXosip_lock();
1367         eXosip_automatic_refresh();
1368         eXosip_unlock();
1369         return 0;
1370 }
1371
1372 int sal_register(SalOp *h, const char *proxy, const char *from, int expires){
1373         osip_message_t *msg;
1374         sal_op_set_route(h,proxy);
1375         if (h->rid==-1){
1376                 eXosip_lock();
1377                 h->rid=eXosip_register_build_initial_register(from,proxy,sal_op_get_contact(h),expires,&msg);
1378                 sal_add_register(h->base.root,h);
1379         }else{
1380                 eXosip_lock();
1381                 eXosip_register_build_register(h->rid,expires,&msg);
1382         }
1383         eXosip_register_send_register(h->rid,msg);
1384         eXosip_unlock();
1385         h->expires=expires;
1386         return 0;
1387 }
1388
1389 int sal_unregister(SalOp *h){
1390         osip_message_t *msg=NULL;
1391         eXosip_lock();
1392         eXosip_register_build_register(h->rid,0,&msg);
1393         if (msg) eXosip_register_send_register(h->rid,msg);
1394         else ms_warning("Could not build unREGISTER !");
1395         eXosip_unlock();
1396         return 0;
1397 }
1398
1399
1400
1401 SalAddress * sal_address_new(const char *uri){
1402         osip_from_t *from;
1403         osip_from_init(&from);
1404         if (osip_from_parse(from,uri)!=0){
1405                 osip_from_free(from);
1406                 return NULL;
1407         }
1408         return (SalAddress*)from;
1409 }
1410
1411 SalAddress * sal_address_clone(const SalAddress *addr){
1412         osip_from_t *ret=NULL;
1413         osip_from_clone((osip_from_t*)addr,&ret);
1414         return (SalAddress*)ret;
1415 }
1416
1417 #define null_if_empty(s) (((s)!=NULL && (s)[0]!='\0') ? (s) : NULL )
1418
1419 const char *sal_address_get_scheme(const SalAddress *addr){
1420         const osip_from_t *u=(const osip_from_t*)addr;
1421         return null_if_empty(u->url->scheme);
1422 }
1423
1424 const char *sal_address_get_display_name(const SalAddress* addr){
1425         const osip_from_t *u=(const osip_from_t*)addr;
1426         return null_if_empty(u->displayname);
1427 }
1428
1429 const char *sal_address_get_username(const SalAddress *addr){
1430         const osip_from_t *u=(const osip_from_t*)addr;
1431         return null_if_empty(u->url->username);
1432 }
1433
1434 const char *sal_address_get_domain(const SalAddress *addr){
1435         const osip_from_t *u=(const osip_from_t*)addr;
1436         return null_if_empty(u->url->host);
1437 }
1438
1439 void sal_address_set_display_name(SalAddress *addr, const char *display_name){
1440         osip_from_t *u=(osip_from_t*)addr;
1441         if (u->displayname!=NULL){
1442                 osip_free(u->displayname);
1443                 u->displayname=NULL;
1444         }
1445         if (display_name!=NULL)
1446                 u->displayname=osip_strdup(display_name);
1447 }
1448
1449 void sal_address_set_username(SalAddress *addr, const char *username){
1450         osip_from_t *uri=(osip_from_t*)addr;
1451         if (uri->url->username!=NULL){
1452                 osip_free(uri->url->username);
1453                 uri->url->username=NULL;
1454         }
1455         if (username)
1456                 uri->url->username=osip_strdup(username);
1457 }
1458
1459 void sal_address_set_domain(SalAddress *addr, const char *host){
1460         osip_from_t *uri=(osip_from_t*)addr;
1461         if (uri->url->host!=NULL){
1462                 osip_free(uri->url->host);
1463                 uri->url->host=NULL;
1464         }
1465         if (host)
1466                 uri->url->host=osip_strdup(host);
1467 }
1468
1469 void sal_address_set_port(SalAddress *addr, const char *port){
1470         osip_from_t *uri=(osip_from_t*)addr;
1471         if (uri->url->port!=NULL){
1472                 osip_free(uri->url->port);
1473                 uri->url->port=NULL;
1474         }
1475         if (port)
1476                 uri->url->port=osip_strdup(port);
1477 }
1478
1479 void sal_address_set_port_int(SalAddress *uri, int port){
1480         char tmp[12];
1481         if (port==5060){
1482                 /*this is the default, special case to leave the port field blank*/
1483                 sal_address_set_port(uri,NULL);
1484                 return;
1485         }
1486         snprintf(tmp,sizeof(tmp),"%i",port);
1487         sal_address_set_port(uri,tmp);
1488 }
1489
1490 void sal_address_clean(SalAddress *addr){
1491         osip_generic_param_freelist(& ((osip_from_t*)addr)->gen_params);
1492 }
1493
1494 char *sal_address_as_string(const SalAddress *u){
1495         char *tmp,*ret;
1496         osip_from_to_str((osip_from_t*)u,&tmp);
1497         ret=ms_strdup(tmp);
1498         osip_free(tmp);
1499         return ret;
1500 }
1501
1502 char *sal_address_as_string_uri_only(const SalAddress *u){
1503         char *tmp=NULL,*ret;
1504         osip_uri_to_str(((osip_from_t*)u)->url,&tmp);
1505         ret=ms_strdup(tmp);
1506         osip_free(tmp);
1507         return ret;
1508 }
1509
1510 void sal_address_destroy(SalAddress *u){
1511         osip_from_free((osip_from_t*)u);
1512 }
1513