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
  25 #include "offeranswer.h"
  26
  27 static void text_received(Sal *sal, eXosip_event_t *ev);
  28
  29 static void _osip_list_set_empty(osip_list_t *l, void (*freefunc)(void*)){
  30         void *data;
  31         while((data=osip_list_get(l,0))!=NULL){
  32                 osip_list_remove(l,0);
  33                 freefunc(data);
  34         }
  35 }
  36
  37 void sal_get_default_local_ip(Sal *sal, int address_family,char *ip, size_t iplen){
  38         if (eXosip_guess_localip(address_family,ip,iplen)<0){
  39                 /*default to something */
  40                 strncpy(ip,address_family==AF_INET6 ? "::1" : "127.0.0.1",iplen);
  41                 ms_error("Could not find default routable ip address !");
  42         }
  43 }
  44
  45
  46 static SalOp * sal_find_call(Sal *sal, int cid){
  47         const MSList *elem;
  48         SalOp *op;
  49         for(elem=sal->calls;elem!=NULL;elem=elem->next){
  50                 op=(SalOp*)elem->data;
  51                 if (op->cid==cid) return op;
  52         }
  53         return NULL;
  54 }
  55
  56 static void sal_add_call(Sal *sal, SalOp *op){
  57         sal->calls=ms_list_append(sal->calls,op);
  58 }
  59
  60 static void sal_remove_call(Sal *sal, SalOp *op){
  61         sal->calls=ms_list_remove(sal->calls, op);
  62 }
  63
  64 static SalOp * sal_find_register(Sal *sal, int rid){
  65         const MSList *elem;
  66         SalOp *op;
  67         for(elem=sal->registers;elem!=NULL;elem=elem->next){
  68                 op=(SalOp*)elem->data;
  69                 if (op->rid==rid) return op;
  70         }
  71         return NULL;
  72 }
  73
  74 static void sal_add_register(Sal *sal, SalOp *op){
  75         sal->registers=ms_list_append(sal->registers,op);
  76 }
  77
  78 static void sal_remove_register(Sal *sal, int rid){
  79         MSList *elem;
  80         SalOp *op;
  81         for(elem=sal->registers;elem!=NULL;elem=elem->next){
  82                 op=(SalOp*)elem->data;
  83                 if (op->rid==rid) {
  84                         sal->registers=ms_list_remove_link(sal->registers,elem);
  85                         return;
  86                 }
  87         }
  88 }
  89
  90 static SalOp * sal_find_other(Sal *sal, osip_message_t *response){
  91         const MSList *elem;
  92         SalOp *op;
  93         osip_call_id_t *callid=osip_message_get_call_id(response);
  94         if (callid==NULL) {
  95                 ms_error("There is no call-id in this response !");
  96                 return NULL;
  97         }
  98         for(elem=sal->other_transactions;elem!=NULL;elem=elem->next){
  99                 op=(SalOp*)elem->data;
 100                 if (osip_call_id_match(callid,op->call_id)==0) return op;
 101         }
 102         return NULL;
 103 }
 104
 105 static void sal_add_other(Sal *sal, SalOp *op, osip_message_t *request){
 106         osip_call_id_t *callid=osip_message_get_call_id(request);
 107         if (callid==NULL) {
 108                 ms_error("There is no call id in the request !");
 109                 return;
 110         }
 111         osip_call_id_clone(callid,&op->call_id);
 112         sal->other_transactions=ms_list_append(sal->other_transactions,op);
 113 }
 114
 115 static void sal_remove_other(Sal *sal, SalOp *op){
 116         sal->other_transactions=ms_list_remove(sal->other_transactions,op);
 117 }
 118
 119
 120 static void sal_add_pending_auth(Sal *sal, SalOp *op){
 121         sal->pending_auths=ms_list_append(sal->pending_auths,op);
 122 }
 123
 124
 125 static void sal_remove_pending_auth(Sal *sal, SalOp *op){
 126         sal->pending_auths=ms_list_remove(sal->pending_auths,op);
 127 }
 128
 129 void sal_exosip_fix_route(SalOp *op){
 130         if (sal_op_get_route(op)!=NULL){
 131                 osip_route_t *rt=NULL;
 132                 osip_uri_param_t *lr_param=NULL;
 133
 134                 osip_route_init(&rt);
 135                 if (osip_route_parse(rt,sal_op_get_route(op))<0){
 136                         ms_warning("Bad route  %s!",sal_op_get_route(op));
 137                         sal_op_set_route(op,NULL);
 138                 }else{
 139                         /* check if the lr parameter is set , if not add it */
 140                         osip_uri_uparam_get_byname(rt->url, "lr", &lr_param);
 141                         if (lr_param==NULL){
 142                                 char *tmproute;
 143                                 osip_uri_uparam_add(rt->url,osip_strdup("lr"),NULL);
 144                                 osip_route_to_str(rt,&tmproute);
 145                                 sal_op_set_route(op,tmproute);
 146                                 osip_free(tmproute);
 147                         }
 148                 }
 149                 osip_route_free(rt);
 150         }
 151 }
 152
 153 SalOp * sal_op_new(Sal *sal){
 154         SalOp *op=ms_new(SalOp,1);
 155         __sal_op_init(op,sal);
 156         op->cid=op->did=op->tid=op->rid=op->nid=op->sid=-1;
 157         op->result=NULL;
 158         op->supports_session_timers=FALSE;
 159         op->sdp_offering=TRUE;
 160         op->pending_auth=NULL;
 161         op->sdp_answer=NULL;
 162         op->reinvite=FALSE;
 163         op->call_id=NULL;
 164         op->masquerade_via=FALSE;
 165         op->auto_answer_asked=FALSE;
 166         return op;
 167 }
 168
 169 bool_t sal_call_autoanswer_asked(SalOp *op)
 170 {
 171         return op->auto_answer_asked;
 172 }
 173
 174 void sal_op_release(SalOp *op){
 175         if (op->sdp_answer)
 176                 sdp_message_free(op->sdp_answer);
 177         if (op->pending_auth)
 178                 eXosip_event_free(op->pending_auth);
 179         if (op->rid!=-1){
 180                 sal_remove_register(op->base.root,op->rid);
 181         }
 182         if (op->cid!=-1){
 183                 ms_message("Cleaning cid %i",op->cid);
 184                 sal_remove_call(op->base.root,op);
 185         }
 186         if (op->sid!=-1){
 187                 sal_remove_out_subscribe(op->base.root,op);
 188         }
 189         if (op->nid!=-1){
 190                 sal_remove_in_subscribe(op->base.root,op);
 191                 if (op->call_id)
 192                         osip_call_id_free(op->call_id);
 193                 op->call_id=NULL;
 194         }
 195         if (op->pending_auth){
 196                 sal_remove_pending_auth(op->base.root,op);
 197         }
 198         if (op->result)
 199                 sal_media_description_unref(op->result);
 200         if (op->call_id){
 201                 sal_remove_other(op->base.root,op);
 202                 osip_call_id_free(op->call_id);
 203         }
 204         __sal_op_free(op);
 205 }
 206
 207 static void _osip_trace_func(char *fi, int li, osip_trace_level_t level, char *chfr, va_list ap){
 208         int ortp_level=ORTP_DEBUG;
 209         switch(level){
 210                 case OSIP_INFO1:
 211                 case OSIP_INFO2:
 212                 case OSIP_INFO3:
 213                 case OSIP_INFO4:
 214                         ortp_level=ORTP_MESSAGE;
 215                         break;
 216                 case OSIP_WARNING:
 217                         ortp_level=ORTP_WARNING;
 218                         break;
 219                 case OSIP_ERROR:
 220                 case OSIP_BUG:
 221                         ortp_level=ORTP_ERROR;
 222                         break;
 223                 case OSIP_FATAL:
 224                         ortp_level=ORTP_FATAL;
 225                         break;
 226                 case END_TRACE_LEVEL:
 227                         break;
 228         }
 229         if (ortp_log_level_enabled(level)){
 230                 int len=strlen(chfr);
 231                 char *chfrdup=ortp_strdup(chfr);
 232                 /*need to remove endline*/
 233                 if (len>1){
 234                         if (chfrdup[len-1]=='\n')
 235                                 chfrdup[len-1]='\0';
 236                         if (chfrdup[len-2]=='\r')
 237                                 chfrdup[len-2]='\0';
 238                 }
 239                 ortp_logv(ortp_level,chfrdup,ap);
 240                 ortp_free(chfrdup);
 241         }
 242 }
 243
 244
 245 Sal * sal_init(){
 246         static bool_t firsttime=TRUE;
 247         Sal *sal;
 248         if (firsttime){
 249                 osip_trace_initialize_func (OSIP_INFO4,&_osip_trace_func);
 250                 firsttime=FALSE;
 251         }
 252         eXosip_init();
 253         sal=ms_new0(Sal,1);
 254         return sal;
 255 }
 256
 257 void sal_uninit(Sal* sal){
 258         eXosip_quit();
 259         ms_free(sal);
 260 }
 261
 262 void sal_set_user_pointer(Sal *sal, void *user_data){
 263         sal->up=user_data;
 264 }
 265
 266 void *sal_get_user_pointer(const Sal *sal){
 267         return sal->up;
 268 }
 269
 270 static void unimplemented_stub(){
 271         ms_warning("Unimplemented SAL callback");
 272 }
 273
 274 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs){
 275         memcpy(&ctx->callbacks,cbs,sizeof(*cbs));
 276         if (ctx->callbacks.call_received==NULL)
 277                 ctx->callbacks.call_received=(SalOnCallReceived)unimplemented_stub;
 278         if (ctx->callbacks.call_ringing==NULL)
 279                 ctx->callbacks.call_ringing=(SalOnCallRinging)unimplemented_stub;
 280         if (ctx->callbacks.call_accepted==NULL)
 281                 ctx->callbacks.call_accepted=(SalOnCallAccepted)unimplemented_stub;
 282         if (ctx->callbacks.call_failure==NULL)
 283                 ctx->callbacks.call_failure=(SalOnCallFailure)unimplemented_stub;
 284         if (ctx->callbacks.call_terminated==NULL)
 285                 ctx->callbacks.call_terminated=(SalOnCallTerminated)unimplemented_stub;
 286         if (ctx->callbacks.call_updated==NULL)
 287                 ctx->callbacks.call_updated=(SalOnCallUpdated)unimplemented_stub;
 288         if (ctx->callbacks.auth_requested==NULL)
 289                 ctx->callbacks.auth_requested=(SalOnAuthRequested)unimplemented_stub;
 290         if (ctx->callbacks.auth_success==NULL)
 291                 ctx->callbacks.auth_success=(SalOnAuthSuccess)unimplemented_stub;
 292         if (ctx->callbacks.register_success==NULL)
 293                 ctx->callbacks.register_success=(SalOnRegisterSuccess)unimplemented_stub;
 294         if (ctx->callbacks.register_failure==NULL)
 295                 ctx->callbacks.register_failure=(SalOnRegisterFailure)unimplemented_stub;
 296         if (ctx->callbacks.dtmf_received==NULL)
 297                 ctx->callbacks.dtmf_received=(SalOnDtmfReceived)unimplemented_stub;
 298         if (ctx->callbacks.notify==NULL)
 299                 ctx->callbacks.notify=(SalOnNotify)unimplemented_stub;
 300         if (ctx->callbacks.notify_presence==NULL)
 301                 ctx->callbacks.notify_presence=(SalOnNotifyPresence)unimplemented_stub;
 302         if (ctx->callbacks.subscribe_received==NULL)
 303                 ctx->callbacks.subscribe_received=(SalOnSubscribeReceived)unimplemented_stub;
 304         if (ctx->callbacks.text_received==NULL)
 305                 ctx->callbacks.text_received=(SalOnTextReceived)unimplemented_stub;
 306         if (ctx->callbacks.internal_message==NULL)
 307                 ctx->callbacks.internal_message=(SalOnInternalMsg)unimplemented_stub;
 308         if (ctx->callbacks.ping_reply==NULL)
 309                 ctx->callbacks.ping_reply=(SalOnPingReply)unimplemented_stub;
 310 }
 311
 312 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure){
 313         int err;
 314         bool_t ipv6;
 315         int proto=IPPROTO_UDP;
 316
 317         if (ctx->running){
 318                 eXosip_quit();
 319                 eXosip_init();
 320         }
 321         err=0;
 322         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
 323                                         version of eXosip, which is not the case*/
 324         /*see if it looks like an IPv6 address*/
 325         ipv6=strchr(addr,':')!=NULL;
 326         eXosip_enable_ipv6(ipv6);
 327
 328         if (tr!=SalTransportDatagram || is_secure){
 329                 ms_fatal("SIP over TCP or TLS or DTLS is not supported yet.");
 330                 return -1;
 331         }
 332         err=eXosip_listen_addr(proto, addr, port, ipv6 ?  PF_INET6 : PF_INET, 0);
 333 #ifdef HAVE_EXOSIP_GET_SOCKET
 334         ms_message("Exosip has socket number %i",eXosip_get_socket(proto));
 335 #endif
 336         ctx->running=TRUE;
 337         return err;
 338 }
 339
 340 ortp_socket_t sal_get_socket(Sal *ctx){
 341 #ifdef HAVE_EXOSIP_GET_SOCKET
 342         return eXosip_get_socket(IPPROTO_UDP);
 343 #else
 344         ms_warning("Sorry, eXosip does not have eXosip_get_socket() method");
 345         return -1;
 346 #endif
 347 }
 348
 349 void sal_set_user_agent(Sal *ctx, const char *user_agent){
 350         eXosip_set_user_agent(user_agent);
 351 }
 352
 353 void sal_use_session_timers(Sal *ctx, int expires){
 354         ctx->session_expires=expires;
 355 }
 356
 357 MSList *sal_get_pending_auths(Sal *sal){
 358         return ms_list_copy(sal->pending_auths);
 359 }
 360
 361 static int extract_received_rport(osip_message_t *msg, const char **received, int *rportval){
 362         osip_via_t *via=NULL;
 363         osip_generic_param_t *param=NULL;
 364         const char *rport=NULL;
 365
 366         *rportval=5060;
 367         *received=NULL;
 368         osip_message_get_via(msg,0,&via);
 369         if (!via) return -1;
 370         if (via->port && via->port[0]!='\0')
 371                 *rportval=atoi(via->port);
 372
 373         osip_via_param_get_byname(via,"rport",&param);
 374         if (param) {
 375                 rport=param->gvalue;
 376                 if (rport && rport[0]!='\0') *rportval=atoi(rport);
 377                 else *rportval=5060;
 378                 *received=via->host;
 379         }
 380         param=NULL;
 381         osip_via_param_get_byname(via,"received",&param);
 382         if (param) *received=param->gvalue;
 383
 384         if (rport==NULL && *received==NULL) return -1;
 385         return 0;
 386 }
 387
 388 static void set_sdp(osip_message_t *sip,sdp_message_t *msg){
 389         int sdplen;
 390         char clen[10];
 391         char *sdp=NULL;
 392         sdp_message_to_str(msg,&sdp);
 393         sdplen=strlen(sdp);
 394         snprintf(clen,sizeof(clen),"%i",sdplen);
 395         osip_message_set_body(sip,sdp,sdplen);
 396         osip_message_set_content_type(sip,"application/sdp");
 397         osip_message_set_content_length(sip,clen);
 398         osip_free(sdp);
 399 }
 400
 401 static void set_sdp_from_desc(osip_message_t *sip, const SalMediaDescription *desc){
 402         sdp_message_t *msg=media_description_to_sdp(desc);
 403         if (msg==NULL) {
 404                 ms_error("Fail to print sdp message !");
 405                 return;
 406         }
 407         set_sdp(sip,msg);
 408         sdp_message_free(msg);
 409 }
 410
 411 static void sdp_process(SalOp *h){
 412         ms_message("Doing SDP offer/answer process");
 413         if (h->result){
 414                 sal_media_description_unref(h->result);
 415         }
 416         h->result=sal_media_description_new();
 417         if (h->sdp_offering){
 418                 offer_answer_initiate_outgoing(h->base.local_media,h->base.remote_media,h->result);
 419         }else{
 420                 int i;
 421                 offer_answer_initiate_incoming(h->base.local_media,h->base.remote_media,h->result);
 422                 h->sdp_answer=media_description_to_sdp(h->result);
 423                 strcpy(h->result->addr,h->base.remote_media->addr);
 424                 h->result->bandwidth=h->base.remote_media->bandwidth;
 425                 for(i=0;i<h->result->nstreams;++i){
 426                         if (h->result->streams[i].port>0){
 427                                 strcpy(h->result->streams[i].addr,h->base.remote_media->streams[i].addr);
 428                                 h->result->streams[i].ptime=h->base.remote_media->streams[i].ptime;
 429                                 h->result->streams[i].bandwidth=h->base.remote_media->streams[i].bandwidth;
 430                                 h->result->streams[i].port=h->base.remote_media->streams[i].port;
 431                         }
 432                 }
 433         }
 434
 435 }
 436
 437 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc){
 438         if (desc)
 439                 sal_media_description_ref(desc);
 440         if (h->base.local_media)
 441                 sal_media_description_unref(h->base.local_media);
 442         h->base.local_media=desc;
 443         return 0;
 444 }
 445
 446 int sal_call(SalOp *h, const char *from, const char *to){
 447         int err;
 448         osip_message_t *invite=NULL;
 449         sal_op_set_from(h,from);
 450         sal_op_set_to(h,to);
 451         sal_exosip_fix_route(h);
 452         err=eXosip_call_build_initial_invite(&invite,to,from,sal_op_get_route(h),"Phone call");
 453         if (err!=0){
 454                 ms_error("Could not create call.");
 455                 return -1;
 456         }
 457         osip_message_set_allow(invite, "INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO");
 458         if (h->base.contact){
 459                 _osip_list_set_empty(&invite->contacts,(void (*)(void*))osip_contact_free);
 460                 osip_message_set_contact(invite,h->base.contact);
 461         }
 462         if (h->base.root->session_expires!=0){
 463                 osip_message_set_header(invite, "Session-expires", "200");
 464                 osip_message_set_supported(invite, "timer");
 465         }
 466         if (h->base.local_media){
 467                 h->sdp_offering=TRUE;
 468                 set_sdp_from_desc(invite,h->base.local_media);
 469         }else h->sdp_offering=FALSE;
 470         eXosip_lock();
 471         err=eXosip_call_send_initial_invite(invite);
 472         eXosip_unlock();
 473         h->cid=err;
 474         if (err<0){
 475                 ms_error("Fail to send invite !");
 476                 return -1;
 477         }else{
 478                 sal_add_call(h->base.root,h);
 479         }
 480         return 0;
 481 }
 482
 483 int sal_call_notify_ringing(SalOp *h){
 484         eXosip_lock();
 485         eXosip_call_send_answer(h->tid,180,NULL);
 486         eXosip_unlock();
 487         return 0;
 488 }
 489
 490 int sal_call_accept(SalOp * h){
 491         osip_message_t *msg;
 492         const char *contact=sal_op_get_contact(h);
 493         /* sends a 200 OK */
 494         int err=eXosip_call_build_answer(h->tid,200,&msg);
 495         if (err<0 || msg==NULL){
 496                 ms_error("Fail to build answer for call: err=%i",err);
 497                 return -1;
 498         }
 499         if (h->base.root->session_expires!=0){
 500                 if (h->supports_session_timers) osip_message_set_supported(msg, "timer");
 501         }
 502
 503         if (contact) {
 504                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 505                 osip_message_set_contact(msg,contact);
 506         }
 507
 508         if (h->base.local_media){
 509                 /*this is the case where we received an invite without SDP*/
 510                 if (h->sdp_offering) {
 511                         set_sdp_from_desc(msg,h->base.local_media);
 512                 }else{
 513                         if (h->sdp_answer)
 514                                 set_sdp(msg,h->sdp_answer);
 515                 }
 516         }else{
 517                 ms_error("You are accepting a call but not defined any media capabilities !");
 518         }
 519         eXosip_call_send_answer(h->tid,200,msg);
 520         return 0;
 521 }
 522
 523 int sal_call_decline(SalOp *h, SalReason reason, const char *redirect){
 524         if (reason==SalReasonBusy){
 525                 eXosip_lock();
 526                 eXosip_call_send_answer(h->tid,486,NULL);
 527                 eXosip_unlock();
 528         }
 529         else if (reason==SalReasonTemporarilyUnavailable){
 530                 eXosip_lock();
 531                 eXosip_call_send_answer(h->tid,480,NULL);
 532                 eXosip_unlock();
 533         }else if (reason==SalReasonDoNotDisturb){
 534                 eXosip_lock();
 535                 eXosip_call_send_answer(h->tid,600,NULL);
 536                 eXosip_unlock();
 537         }else if (reason==SalReasonMedia){
 538                 eXosip_lock();
 539                 eXosip_call_send_answer(h->tid,415,NULL);
 540                 eXosip_unlock();
 541         }else if (redirect!=NULL && reason==SalReasonRedirect){
 542                 osip_message_t *msg;
 543                 int code;
 544                 if (strstr(redirect,"sip:")!=0) code=302;
 545                 else code=380;
 546                 eXosip_lock();
 547                 eXosip_call_build_answer(h->tid,code,&msg);
 548                 osip_message_set_contact(msg,redirect);
 549                 eXosip_call_send_answer(h->tid,code,msg);
 550                 eXosip_unlock();
 551         }else sal_call_terminate(h);
 552         return 0;
 553 }
 554
 555 SalMediaDescription * sal_call_get_final_media_description(SalOp *h){
 556         if (h->base.local_media && h->base.remote_media && !h->result){
 557                 sdp_process(h);
 558         }
 559         return h->result;
 560 }
 561
 562 int sal_ping(SalOp *op, const char *from, const char *to){
 563         osip_message_t *options=NULL;
 564
 565         sal_op_set_from(op,from);
 566         sal_op_set_to(op,to);
 567         eXosip_options_build_request (&options, sal_op_get_to(op),
 568                         sal_op_get_from(op),sal_op_get_route(op));
 569         if (options){
 570                 if (op->base.root->session_expires!=0){
 571                         osip_message_set_header(options, "Session-expires", "200");
 572                         osip_message_set_supported(options, "timer");
 573                 }
 574                 sal_add_other(sal_op_get_sal(op),op,options);
 575                 return eXosip_options_send_request(options);
 576         }
 577         return -1;
 578 }
 579
 580 int sal_refer_accept(SalOp *op){
 581         osip_message_t *msg=NULL;
 582         int err=0;
 583         eXosip_lock();
 584         err = eXosip_call_build_notify(op->did,EXOSIP_SUBCRSTATE_ACTIVE,&msg);
 585         if(msg != NULL)
 586         {
 587                 osip_message_set_header(msg,(const char *)"event","refer");
 588                 osip_message_set_content_type(msg,"message/sipfrag");
 589                 osip_message_set_body(msg,"SIP/2.0 100 Trying",sizeof("SIP/2.0 100 Trying"));
 590                 eXosip_call_send_request(op->did,msg);
 591         }
 592         else
 593         {
 594                 ms_error("could not get a notify built\n");
 595         }
 596         eXosip_unlock();
 597         return err;
 598 }
 599
 600 int sal_refer(SalOp *h, const char *refer_to){
 601         osip_message_t *msg=NULL;
 602         int err=0;
 603         eXosip_lock();
 604         eXosip_call_build_refer(h->did,refer_to, &msg);
 605         if (msg) err=eXosip_call_send_request(h->did, msg);
 606         else err=-1;
 607         eXosip_unlock();
 608         return err;
 609 }
 610
 611 int sal_call_send_dtmf(SalOp *h, char dtmf){
 612         osip_message_t *msg=NULL;
 613         char dtmf_body[128];
 614         char clen[10];
 615
 616         eXosip_lock();
 617         eXosip_call_build_info(h->did,&msg);
 618         if (msg){
 619                 snprintf(dtmf_body, sizeof(dtmf_body), "Signal=%c\r\nDuration=250\r\n", dtmf);
 620                 osip_message_set_body(msg,dtmf_body,strlen(dtmf_body));
 621                 osip_message_set_content_type(msg,"application/dtmf-relay");
 622                 snprintf(clen,sizeof(clen),"%lu",(unsigned long)strlen(dtmf_body));
 623                 osip_message_set_content_length(msg,clen);
 624                 eXosip_call_send_request(h->did,msg);
 625         }
 626         eXosip_unlock();
 627         return 0;
 628 }
 629
 630 int sal_call_terminate(SalOp *h){
 631         eXosip_lock();
 632         eXosip_call_terminate(h->cid,h->did);
 633         eXosip_unlock();
 634         sal_remove_call(h->base.root,h);
 635         h->cid=-1;
 636         return 0;
 637 }
 638
 639 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info){
 640         if (h->pending_auth){
 641                 const char *userid;
 642                 if (info->userid==NULL || info->userid[0]=='\0') userid=info->username;
 643                 else userid=info->userid;
 644                 ms_message("Authentication info for %s %s added to eXosip", info->username,info->realm);
 645                 eXosip_add_authentication_info (info->username,userid,
 646                                       info->password, NULL,info->realm);
 647                 eXosip_lock();
 648                 eXosip_default_action(h->pending_auth);
 649                 eXosip_unlock();
 650                 ms_message("eXosip_default_action() done");
 651                 eXosip_clear_authentication_info();
 652                 eXosip_event_free(h->pending_auth);
 653                 sal_remove_pending_auth(sal_op_get_sal(h),h);
 654                 h->pending_auth=NULL;
 655         }
 656 }
 657
 658 static void set_network_origin(SalOp *op, osip_message_t *req){
 659         const char *received=NULL;
 660         int rport=5060;
 661         char origin[64];
 662         if (extract_received_rport(req,&received,&rport)!=0){
 663                 osip_via_t *via=NULL;
 664                 char *tmp;
 665                 osip_message_get_via(req,0,&via);
 666                 received=osip_via_get_host(via);
 667                 tmp=osip_via_get_port(via);
 668                 if (tmp) rport=atoi(tmp);
 669         }
 670         snprintf(origin,sizeof(origin)-1,"sip:%s:%i",received,rport);
 671         __sal_op_set_network_origin(op,origin);
 672 }
 673
 674 static SalOp *find_op(Sal *sal, eXosip_event_t *ev){
 675         if (ev->cid>0){
 676                 return sal_find_call(sal,ev->cid);
 677         }
 678         if (ev->rid>0){
 679                 return sal_find_register(sal,ev->rid);
 680         }
 681         if (ev->response) return sal_find_other(sal,ev->response);
 682         return NULL;
 683 }
 684
 685 static void inc_new_call(Sal *sal, eXosip_event_t *ev){
 686         SalOp *op=sal_op_new(sal);
 687         osip_from_t *from,*to;
 688         osip_call_info_t *call_info;
 689         char *tmp;
 690         sdp_message_t *sdp=eXosip_get_sdp_info(ev->request);
 691
 692         set_network_origin(op,ev->request);
 693
 694         if (sdp){
 695                 op->sdp_offering=FALSE;
 696                 op->base.remote_media=sal_media_description_new();
 697                 sdp_to_media_description(sdp,op->base.remote_media);
 698                 sdp_message_free(sdp);
 699         }else op->sdp_offering=TRUE;
 700
 701         from=osip_message_get_from(ev->request);
 702         to=osip_message_get_to(ev->request);
 703         osip_from_to_str(from,&tmp);
 704         sal_op_set_from(op,tmp);
 705         osip_free(tmp);
 706         osip_from_to_str(to,&tmp);
 707         sal_op_set_to(op,tmp);
 708         osip_free(tmp);
 709
 710         osip_message_get_call_info(ev->request,0,&call_info);
 711         if(call_info)
 712         {
 713                 osip_call_info_to_str(call_info,&tmp);
 714                 if( strstr(tmp,"answer-after=") != NULL)
 715                 {
 716                         op->auto_answer_asked=TRUE;
 717                         ms_message("The caller asked to automatically answer the call(Emergency?)\n");
 718                 }
 719                 osip_free(tmp);
 720         }
 721
 722         op->tid=ev->tid;
 723         op->cid=ev->cid;
 724         op->did=ev->did;
 725
 726         sal_add_call(op->base.root,op);
 727         sal->callbacks.call_received(op);
 728 }
 729
 730 static void handle_reinvite(Sal *sal,  eXosip_event_t *ev){
 731         SalOp *op=find_op(sal,ev);
 732         sdp_message_t *sdp;
 733         osip_message_t *msg=NULL;
 734
 735         if (op==NULL) {
 736                 ms_warning("Reinvite for non-existing operation !");
 737                 return;
 738         }
 739         op->reinvite=TRUE;
 740         op->tid=ev->tid;
 741         sdp=eXosip_get_sdp_info(ev->request);
 742         if (op->base.remote_media){
 743                 sal_media_description_unref(op->base.remote_media);
 744                 op->base.remote_media=NULL;
 745         }
 746         eXosip_lock();
 747         eXosip_call_build_answer(ev->tid,200,&msg);
 748         eXosip_unlock();
 749         if (msg==NULL) return;
 750         if (op->base.root->session_expires!=0){
 751                 if (op->supports_session_timers) osip_message_set_supported(msg, "timer");
 752         }
 753         if (op->base.contact){
 754                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 755                 osip_message_set_contact(msg,op->base.contact);
 756         }
 757         if (sdp){
 758                 op->sdp_offering=FALSE;
 759                 op->base.remote_media=sal_media_description_new();
 760                 sdp_to_media_description(sdp,op->base.remote_media);
 761                 sdp_message_free(sdp);
 762                 sdp_process(op);
 763                 set_sdp(msg,op->sdp_answer);
 764         }else {
 765                 op->sdp_offering=TRUE;
 766                 set_sdp_from_desc(msg,op->base.local_media);
 767         }
 768         eXosip_lock();
 769         eXosip_call_send_answer(ev->tid,200,msg);
 770         eXosip_unlock();
 771 }
 772
 773 static void handle_ack(Sal *sal,  eXosip_event_t *ev){
 774         SalOp *op=find_op(sal,ev);
 775         sdp_message_t *sdp;
 776
 777         if (op==NULL) {
 778                 ms_warning("ack for non-existing call !");
 779                 return;
 780         }
 781         sdp=eXosip_get_sdp_info(ev->ack);
 782         if (sdp){
 783                 op->base.remote_media=sal_media_description_new();
 784                 sdp_to_media_description(sdp,op->base.remote_media);
 785                 sdp_process(op);
 786                 sdp_message_free(sdp);
 787         }
 788         if (op->reinvite){
 789                 sal->callbacks.call_updated(op);
 790                 op->reinvite=FALSE;
 791         }else{
 792                 sal->callbacks.call_ack(op);
 793         }
 794 }
 795
 796 static void update_contact_from_response(SalOp *op, osip_message_t *response){
 797         const char *received;
 798         int rport;
 799         if (extract_received_rport(response,&received,&rport)==0){
 800                 const char *contact=sal_op_get_contact(op);
 801                 if (!contact){
 802                         /*no contact given yet, use from instead*/
 803                         contact=sal_op_get_from(op);
 804                 }
 805                 if (contact){
 806                         SalAddress *addr=sal_address_new(contact);
 807                         char *tmp;
 808                         sal_address_set_domain(addr,received);
 809                         sal_address_set_port_int(addr,rport);
 810                         tmp=sal_address_as_string(addr);
 811                         ms_message("Contact address updated to %s for this dialog",tmp);
 812                         sal_op_set_contact(op,tmp);
 813                         ms_free(tmp);
 814                 }
 815         }
 816 }
 817
 818 static int call_proceeding(Sal *sal, eXosip_event_t *ev){
 819         SalOp *op=find_op(sal,ev);
 820
 821         if (op==NULL) {
 822                 ms_warning("This call has been canceled.");
 823                 eXosip_lock();
 824                 eXosip_call_terminate(ev->cid,ev->did);
 825                 eXosip_unlock();
 826                 return -1;
 827         }
 828         op->did=ev->did;
 829         op->tid=ev->tid;
 830
 831         /* update contact if received and rport are set by the server
 832          note: will only be used by remote for next INVITE, if any...*/
 833         update_contact_from_response(op,ev->response);
 834         return 0;
 835 }
 836
 837 static void call_ringing(Sal *sal, eXosip_event_t *ev){
 838         sdp_message_t *sdp;
 839         SalOp *op=find_op(sal,ev);
 840         if (call_proceeding(sal, ev)==-1) return;
 841
 842         sdp=eXosip_get_sdp_info(ev->response);
 843         if (sdp){
 844                 op->base.remote_media=sal_media_description_new();
 845                 sdp_to_media_description(sdp,op->base.remote_media);
 846                 sdp_message_free(sdp);
 847                 if (op->base.local_media) sdp_process(op);
 848         }
 849         sal->callbacks.call_ringing(op);
 850 }
 851
 852 static void call_accepted(Sal *sal, eXosip_event_t *ev){
 853         sdp_message_t *sdp;
 854         osip_message_t *msg=NULL;
 855         SalOp *op=find_op(sal,ev);
 856         const char *contact;
 857
 858         if (op==NULL){
 859                 ms_error("A closed call is accepted ?");
 860                 return;
 861         }
 862         sdp=eXosip_get_sdp_info(ev->response);
 863         if (sdp){
 864                 op->base.remote_media=sal_media_description_new();
 865                 sdp_to_media_description(sdp,op->base.remote_media);
 866                 sdp_message_free(sdp);
 867                 if (op->base.local_media) sdp_process(op);
 868         }
 869         eXosip_call_build_ack(ev->did,&msg);
 870         contact=sal_op_get_contact(op);
 871         if (contact) {
 872                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 873                 osip_message_set_contact(msg,contact);
 874         }
 875         if (op->sdp_answer)
 876                         set_sdp(msg,op->sdp_answer);
 877         eXosip_call_send_ack(ev->did,msg);
 878         sal->callbacks.call_accepted(op);
 879 }
 880
 881 static void call_terminated(Sal *sal, eXosip_event_t *ev){
 882         char *from=NULL;
 883         SalOp *op=find_op(sal,ev);
 884         if (op==NULL){
 885                 ms_warning("Call terminated for already closed call ?");
 886                 return;
 887         }
 888         if (ev->request){
 889                 osip_from_to_str(ev->request->from,&from);
 890         }
 891         sal_remove_call(sal,op);
 892         op->cid=-1;
 893         sal->callbacks.call_terminated(op,from!=NULL ? from : sal_op_get_from(op));
 894         if (from) osip_free(from);
 895 }
 896
 897 static void call_released(Sal *sal, eXosip_event_t *ev){
 898         SalOp *op=find_op(sal,ev);
 899         if (op==NULL){
 900                 ms_warning("No op associated to this call_released()");
 901                 return;
 902         }
 903         op->cid=-1;
 904         if (op->did==-1)
 905                 sal->callbacks.call_failure(op,SalErrorNoResponse,SalReasonUnknown,NULL);
 906 }
 907
 908 static int get_auth_data_from_response(osip_message_t *resp, const char **realm, const char **username){
 909         const char *prx_realm=NULL,*www_realm=NULL;
 910         osip_proxy_authenticate_t *prx_auth;
 911         osip_www_authenticate_t *www_auth;
 912
 913         *username=osip_uri_get_username(resp->from->url);
 914         prx_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->proxy_authenticates,0);
 915         www_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->www_authenticates,0);
 916         if (prx_auth!=NULL)
 917                 prx_realm=osip_proxy_authenticate_get_realm(prx_auth);
 918         if (www_auth!=NULL)
 919                 www_realm=osip_www_authenticate_get_realm(www_auth);
 920
 921         if (prx_realm){
 922                 *realm=prx_realm;
 923         }else if (www_realm){
 924                 *realm=www_realm;
 925         }else{
 926                 return -1;
 927         }
 928         return 0;
 929 }
 930
 931 static int get_auth_data_from_request(osip_message_t *msg, const char **realm, const char **username){
 932         osip_authorization_t *auth=NULL;
 933         osip_proxy_authorization_t *prx_auth=NULL;
 934
 935         *username=osip_uri_get_username(msg->from->url);
 936         osip_message_get_authorization(msg, 0, &auth);
 937         if (auth){
 938                 *realm=osip_authorization_get_realm(auth);
 939                 return 0;
 940         }
 941         osip_message_get_proxy_authorization(msg,0,&prx_auth);
 942         if (prx_auth){
 943                 *realm=osip_proxy_authorization_get_realm(prx_auth);
 944                 return 0;
 945         }
 946         return -1;
 947 }
 948
 949 static int get_auth_data(eXosip_event_t *ev, const char **realm, const char **username){
 950         if (ev->response && get_auth_data_from_response(ev->response,realm,username)==0) return 0;
 951         if (ev->request && get_auth_data_from_request(ev->request,realm,username)==0) return 0;
 952         return -1;
 953 }
 954
 955 int sal_op_get_auth_requested(SalOp *op, const char **realm, const char **username){
 956         if (op->pending_auth){
 957                 return get_auth_data(op->pending_auth,realm,username);
 958         }
 959         return -1;
 960 }
 961
 962 static bool_t process_authentication(Sal *sal, eXosip_event_t *ev){
 963         SalOp *op;
 964         const char *username,*realm;
 965         op=find_op(sal,ev);
 966         if (op==NULL){
 967                 ms_warning("No operation associated with this authentication !");
 968                 return TRUE;
 969         }
 970         if (get_auth_data(ev,&realm,&username)==0){
 971                 if (op->pending_auth!=NULL)
 972                         eXosip_event_free(op->pending_auth);
 973                 op->pending_auth=ev;
 974                 sal_add_pending_auth (sal,op);
 975                 sal->callbacks.auth_requested(op,realm,username);
 976                 return FALSE;
 977         }
 978         return TRUE;
 979 }
 980
 981 static void authentication_ok(Sal *sal, eXosip_event_t *ev){
 982         SalOp *op;
 983         const char *username,*realm;
 984         op=find_op(sal,ev);
 985         if (op==NULL){
 986                 ms_warning("No operation associated with this authentication_ok!");
 987                 return ;
 988         }
 989         if (get_auth_data(ev,&realm,&username)==0){
 990                 sal->callbacks.auth_success(op,realm,username);
 991         }
 992 }
 993
 994 static bool_t call_failure(Sal *sal, eXosip_event_t *ev){
 995         SalOp *op;
 996         int code=0;
 997         const char *reason=NULL;
 998         SalError error=SalErrorUnknown;
 999         SalReason sr=SalReasonUnknown;
1000
1001         op=(SalOp*)find_op(sal,ev);
1002
1003         if (op==NULL) {
1004                 ms_warning("Call failure reported for a closed call, ignored.");
1005                 return TRUE;
1006         }
1007
1008         if (ev->response){
1009                 code=osip_message_get_status_code(ev->response);
1010                 reason=osip_message_get_reason_phrase(ev->response);
1011         }
1012         switch(code)
1013         {
1014                 case 401:
1015                 case 407:
1016                         return process_authentication(sal,ev);
1017                         break;
1018                 case 400:
1019                         error=SalErrorUnknown;
1020                 break;
1021                 case 404:
1022                         error=SalErrorFailure;
1023                         sr=SalReasonNotFound;
1024                 break;
1025                 case 415:
1026                         error=SalErrorFailure;
1027                         sr=SalReasonMedia;
1028                 break;
1029                 case 422:
1030                         eXosip_default_action(ev);
1031                         return TRUE;
1032                 break;
1033                 case 480:
1034                         error=SalErrorFailure;
1035                         sr=SalReasonTemporarilyUnavailable;
1036                 case 486:
1037                         error=SalErrorFailure;
1038                         sr=SalReasonBusy;
1039                 break;
1040                 case 487:
1041                 break;
1042                 case 600:
1043                         error=SalErrorFailure;
1044                         sr=SalReasonDoNotDisturb;
1045                 break;
1046                 case 603:
1047                         error=SalErrorFailure;
1048                         sr=SalReasonDeclined;
1049                 break;
1050                 default:
1051                         if (code>0){
1052                                 error=SalErrorFailure;
1053                                 sr=SalReasonUnknown;
1054                         }else error=SalErrorNoResponse;
1055         }
1056         sal->callbacks.call_failure(op,error,sr,reason);
1057         return TRUE;
1058 }
1059
1060
1061 static void process_media_control_xml(Sal *sal, eXosip_event_t *ev){
1062         SalOp *op=find_op(sal,ev);
1063         osip_body_t *body=NULL;
1064
1065         if (op==NULL){
1066                 ms_warning("media control xml received without operation context!");
1067                 return ;
1068         }
1069
1070         osip_message_get_body(ev->request,0,&body);
1071         if (body && body->body!=NULL &&
1072                 strstr(body->body,"picture_fast_update")){
1073                 osip_message_t *ans=NULL;
1074                 ms_message("Receiving VFU request !");
1075                 if (sal->callbacks.vfu_request){
1076                         sal->callbacks.vfu_request(op);
1077                         eXosip_call_build_answer(ev->tid,200,&ans);
1078                         if (ans)
1079                                 eXosip_call_send_answer(ev->tid,200,ans);
1080                 }
1081         }
1082 }
1083
1084 static void process_dtmf_relay(Sal *sal, eXosip_event_t *ev){
1085         SalOp *op=find_op(sal,ev);
1086         osip_body_t *body=NULL;
1087
1088         if (op==NULL){
1089                 ms_warning("media dtmf relay received without operation context!");
1090                 return ;
1091         }
1092
1093         osip_message_get_body(ev->request,0,&body);
1094         if (body && body->body!=NULL){
1095                 osip_message_t *ans=NULL;
1096                 const char *name=strstr(body->body,"Signal");
1097                 if (name==NULL) name=strstr(body->body,"signal");
1098                 if (name==NULL) {
1099                         ms_warning("Could not extract the dtmf name from the SIP INFO.");
1100                 }else{
1101                         char tmp[2];
1102                         name+=strlen("signal");
1103                         if (sscanf(name," = %1s",tmp)==1){
1104                                 ms_message("Receiving dtmf %s via SIP INFO.",tmp);
1105                                 if (sal->callbacks.dtmf_received != NULL)
1106                                         sal->callbacks.dtmf_received(op, tmp[0]);
1107                         }
1108                 }
1109                 eXosip_call_build_answer(ev->tid,200,&ans);
1110                 if (ans)
1111                         eXosip_call_send_answer(ev->tid,200,ans);
1112         }
1113 }
1114
1115 static void call_message_new(Sal *sal, eXosip_event_t *ev){
1116         osip_message_t *ans=NULL;
1117         if (ev->request){
1118                 if (MSG_IS_INFO(ev->request)){
1119                         osip_content_type_t *ct;
1120                         ct=osip_message_get_content_type(ev->request);
1121                         if (ct && ct->subtype){
1122                                 if (strcmp(ct->subtype,"media_control+xml")==0)
1123                                         process_media_control_xml(sal,ev);
1124                                 else if (strcmp(ct->subtype,"dtmf-relay")==0)
1125                                         process_dtmf_relay(sal,ev);
1126                                 else {
1127                                         ms_message("Unhandled SIP INFO.");
1128                                         /*send an "Not implemented" answer*/
1129                                         eXosip_lock();
1130                                         eXosip_call_build_answer(ev->tid,501,&ans);
1131                                         if (ans)
1132                                                 eXosip_call_send_answer(ev->tid,501,ans);
1133                                         eXosip_unlock();
1134                                 }
1135                         }else{
1136                                 /*empty SIP INFO, probably to test we are alive. Send an empty answer*/
1137                                 eXosip_lock();
1138                                 eXosip_call_build_answer(ev->tid,200,&ans);
1139                                 if (ans)
1140                                         eXosip_call_send_answer(ev->tid,200,ans);
1141                                 eXosip_unlock();
1142                         }
1143                 }
1144                 if(MSG_IS_MESSAGE(ev->request)){
1145                         /* SIP messages could be received into call */
1146                         text_received(sal, ev);
1147                         eXosip_lock();
1148                         eXosip_call_build_answer(ev->tid,200,&ans);
1149                         if (ans)
1150                                 eXosip_call_send_answer(ev->tid,200,ans);
1151                         eXosip_unlock();
1152                 }
1153                 if(MSG_IS_REFER(ev->request)){
1154                         osip_header_t *h=NULL;
1155                         SalOp *op=find_op(sal,ev);
1156
1157                         ms_message("Receiving REFER request !");
1158                         osip_message_header_get_byname(ev->request,"Refer-To",0,&h);
1159                         eXosip_lock();
1160                         eXosip_call_build_answer(ev->tid,202,&ans);
1161                         if (ans)
1162                                 eXosip_call_send_answer(ev->tid,202,ans);
1163                         eXosip_unlock();
1164                         if (h){
1165                                 sal->callbacks.refer_received(sal,op,h->hvalue);
1166                         }
1167                         else
1168                         {
1169                                 ms_warning("cannot do anything with the refer without destination\n");
1170                         }
1171                 }
1172                 if(MSG_IS_NOTIFY(ev->request)){
1173                         osip_header_t *h=NULL;
1174                         char *from=NULL;
1175                         SalOp *op=find_op(sal,ev);
1176
1177                         ms_message("Receiving NOTIFY request !");
1178                         osip_from_to_str(ev->request->from,&from);
1179                         osip_message_header_get_byname(ev->request,"Event",0,&h);
1180                         if(h)
1181                                 sal->callbacks.notify(op,from,h->hvalue);
1182                         /*answer that we received the notify*/
1183                         eXosip_lock();
1184                         eXosip_call_build_answer(ev->tid,200,&ans);
1185                         if (ans)
1186                                 eXosip_call_send_answer(ev->tid,200,ans);
1187                         eXosip_unlock();
1188                         osip_free(from);
1189                 }
1190         }else ms_warning("call_message_new: No request ?");
1191 }
1192
1193 static void inc_update(Sal *sal, eXosip_event_t *ev){
1194         osip_message_t *msg=NULL;
1195         ms_message("Processing incoming UPDATE");
1196         eXosip_lock();
1197         eXosip_message_build_answer(ev->tid,200,&msg);
1198         if (msg!=NULL)
1199                 eXosip_message_send_answer(ev->tid,200,msg);
1200         eXosip_unlock();
1201 }
1202
1203 static bool_t comes_from_local_if(osip_message_t *msg){
1204         osip_via_t *via=NULL;
1205         osip_message_get_via(msg,0,&via);
1206         if (via){
1207                 const char *host;
1208                 host=osip_via_get_host(via);
1209                 if (strcmp(host,"127.0.0.1")==0 || strcmp(host,"::1")==0){
1210                         osip_generic_param_t *param=NULL;
1211                         osip_via_param_get_byname(via,"received",&param);
1212                         if (param==NULL) return TRUE;
1213                         if (param->gvalue &&
1214                                 (strcmp(param->gvalue,"127.0.0.1")==0 || strcmp(param->gvalue,"::1")==0)){
1215                                 return TRUE;
1216                         }
1217                 }
1218         }
1219         return FALSE;
1220 }
1221
1222 static void text_received(Sal *sal, eXosip_event_t *ev){
1223         osip_body_t *body=NULL;
1224         char *from=NULL,*msg;
1225
1226         osip_message_get_body(ev->request,0,&body);
1227         if (body==NULL){
1228                 ms_error("Could not get text message from SIP body");
1229                 return;
1230         }
1231         msg=body->body;
1232         osip_from_to_str(ev->request->from,&from);
1233         sal->callbacks.text_received(sal,from,msg);
1234         osip_free(from);
1235 }
1236
1237 static void other_request(Sal *sal, eXosip_event_t *ev){
1238         ms_message("in other_request");
1239         if (ev->request==NULL) return;
1240         if (strcmp(ev->request->sip_method,"MESSAGE")==0){
1241                 text_received(sal,ev);
1242                 eXosip_message_send_answer(ev->tid,200,NULL);
1243         }else if (strcmp(ev->request->sip_method,"OPTIONS")==0){
1244                 osip_message_t *options=NULL;
1245                 eXosip_options_build_answer(ev->tid,200,&options);
1246                 osip_message_set_allow(options,"INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, SUBSCRIBE, NOTIFY, INFO");
1247                 osip_message_set_accept(options,"application/sdp");
1248                 eXosip_options_send_answer(ev->tid,200,options);
1249         }else if (strcmp(ev->request->sip_method,"WAKEUP")==0
1250                 && comes_from_local_if(ev->request)) {
1251                 eXosip_message_send_answer(ev->tid,200,NULL);
1252                 ms_message("Receiving WAKEUP request !");
1253                 sal->callbacks.internal_message(sal,"WAKEUP");
1254         }else if (strncmp(ev->request->sip_method, "REFER", 5) == 0){
1255                 ms_message("Receiving REFER request !");
1256                 if (comes_from_local_if(ev->request)) {
1257                         osip_header_t *h=NULL;
1258                         osip_message_header_get_byname(ev->request,"Refer-To",0,&h);
1259                         eXosip_message_send_answer(ev->tid,200,NULL);
1260                         if (h){
1261                                 sal->callbacks.refer_received(sal,NULL,h->hvalue);
1262                         }
1263                 }else ms_warning("Ignored REFER not coming from this local loopback interface.");
1264         }else if (strncmp(ev->request->sip_method, "UPDATE", 6) == 0){
1265                 inc_update(sal,ev);
1266     }else {
1267                 char *tmp=NULL;
1268                 size_t msglen=0;
1269                 osip_message_to_str(ev->request,&tmp,&msglen);
1270                 if (tmp){
1271                         ms_message("Unsupported request received:\n%s",tmp);
1272                         osip_free(tmp);
1273                 }
1274                 /*answer with a 501 Not implemented*/
1275                 eXosip_message_send_answer(ev->tid,501,NULL);
1276         }
1277 }
1278
1279 static void masquerade_via(osip_message_t *msg, const char *ip, const char *port){
1280         osip_via_t *via=NULL;
1281         osip_message_get_via(msg,0,&via);
1282         if (via){
1283                 osip_free(via->port);
1284                 via->port=osip_strdup(port);
1285                 osip_free(via->host);
1286                 via->host=osip_strdup(ip);
1287         }
1288 }
1289
1290 static bool_t register_again_with_updated_contact(SalOp *op, osip_message_t *orig_request, osip_message_t *last_answer){
1291         osip_message_t *msg;
1292         const char *received;
1293         int rport;
1294         osip_contact_t *ctt=NULL;
1295         char *tmp;
1296         char port[20];
1297         SalAddress *addr;
1298
1299         if (extract_received_rport(last_answer,&received,&rport)==-1) return FALSE;
1300         osip_message_get_contact(orig_request,0,&ctt);
1301         if (strcmp(ctt->url->host,received)==0){
1302                 /*ip address matches, check ports*/
1303                 const char *contact_port=ctt->url->port;
1304                 if (contact_port==NULL || contact_port[0]=='\0')
1305                         contact_port="5060";
1306                 if (atoi(contact_port)==rport){
1307                         ms_message("Register has up to date contact, doing nothing.");
1308                         return FALSE;
1309                 }else ms_message("ports do not match, need to update the register (%s <> %i)", contact_port,rport);
1310         }
1311         eXosip_lock();
1312         msg=NULL;
1313         eXosip_register_build_register(op->rid,op->expires,&msg);
1314         if (msg==NULL){
1315                 eXosip_unlock();
1316                 ms_warning("Fail to create a contact updated register.");
1317                 return FALSE;
1318         }
1319         osip_message_get_contact(msg,0,&ctt);
1320         if (ctt->url->host!=NULL){
1321                 osip_free(ctt->url->host);
1322         }
1323         ctt->url->host=osip_strdup(received);
1324         if (ctt->url->port!=NULL){
1325                 osip_free(ctt->url->port);
1326         }
1327         snprintf(port,sizeof(port),"%i",rport);
1328         ctt->url->port=osip_strdup(port);
1329         if (op->masquerade_via) masquerade_via(msg,received,port);
1330         eXosip_register_send_register(op->rid,msg);
1331         eXosip_unlock();
1332         osip_contact_to_str(ctt,&tmp);
1333         addr=sal_address_new(tmp);
1334         osip_free(tmp);
1335         sal_address_clean(addr);
1336         tmp=sal_address_as_string(addr);
1337         sal_op_set_contact(op,tmp);
1338         sal_address_destroy(addr);
1339         ms_message("Resending new register with updated contact %s",tmp);
1340         ms_free(tmp);
1341         return TRUE;
1342 }
1343
1344 static void registration_success(Sal *sal, eXosip_event_t *ev){
1345         SalOp *op=sal_find_register(sal,ev->rid);
1346         osip_header_t *h=NULL;
1347         bool_t registered;
1348         if (op==NULL){
1349                 ms_error("Receiving register response for unknown operation");
1350                 return;
1351         }
1352         osip_message_get_expires(ev->request,0,&h);
1353         if (h!=NULL && atoi(h->hvalue)!=0){
1354                 registered=TRUE;
1355                 if (!register_again_with_updated_contact(op,ev->request,ev->response)){
1356                         sal->callbacks.register_success(op,registered);
1357                 }
1358         }else registered=FALSE;
1359 }
1360
1361 static bool_t registration_failure(Sal *sal, eXosip_event_t *ev){
1362         int status_code=0;
1363         const char *reason=NULL;
1364         SalOp *op=sal_find_register(sal,ev->rid);
1365         SalReason sr=SalReasonUnknown;
1366         SalError se=SalErrorUnknown;
1367
1368         if (op==NULL){
1369                 ms_error("Receiving register failure for unknown operation");
1370                 return TRUE;
1371         }
1372         if (ev->response){
1373                 status_code=osip_message_get_status_code(ev->response);
1374                 reason=osip_message_get_reason_phrase(ev->response);
1375         }else return TRUE;
1376         switch(status_code){
1377                 case 401:
1378                 case 407:
1379                         return process_authentication(sal,ev);
1380                         break;
1381                 case 606: /*Not acceptable, workaround for proxies that don't like private addresses
1382                                  in vias, such as ekiga.net
1383                                  On the opposite, freephonie.net bugs when via are masqueraded.
1384                                  */
1385                         op->masquerade_via=TRUE;
1386                 default:
1387                         /* if contact is up to date, process the failure, otherwise resend a new register with
1388                                 updated contact first, just in case the faillure is due to incorrect contact */
1389                         if (register_again_with_updated_contact(op,ev->request,ev->response))
1390                                 return TRUE; /*we are retrying with an updated contact*/
1391                         if (status_code==403){
1392                                 se=SalErrorFailure;
1393                                 sr=SalReasonForbidden;
1394                         }else if (status_code==0){
1395                                 se=SalErrorNoResponse;
1396                         }
1397                         sal->callbacks.register_failure(op,se,sr,reason);
1398         }
1399         return TRUE;
1400 }
1401
1402 static void other_request_reply(Sal *sal,eXosip_event_t *ev){
1403         SalOp *op=find_op(sal,ev);
1404
1405         if (op==NULL){
1406                 ms_warning("other_request_reply(): Receiving response to unknown request.");
1407                 return;
1408         }
1409         if (ev->response){
1410                 update_contact_from_response(op,ev->response);
1411                 if (ev->request && strcmp(osip_message_get_method(ev->request),"OPTIONS")==0)
1412                         sal->callbacks.ping_reply(op);
1413         }
1414 }
1415
1416 static bool_t process_event(Sal *sal, eXosip_event_t *ev){
1417         ms_message("linphone process event get a message %d\n",ev->type);
1418         switch(ev->type){
1419                 case EXOSIP_CALL_ANSWERED:
1420                         ms_message("CALL_ANSWERED\n");
1421                         call_accepted(sal,ev);
1422                         authentication_ok(sal,ev);
1423                         break;
1424                 case EXOSIP_CALL_CLOSED:
1425                 case EXOSIP_CALL_CANCELLED:
1426                         ms_message("CALL_CLOSED or CANCELLED\n");
1427                         call_terminated(sal,ev);
1428                         break;
1429                 case EXOSIP_CALL_TIMEOUT:
1430                 case EXOSIP_CALL_NOANSWER:
1431                         ms_message("CALL_TIMEOUT or NOANSWER\n");
1432                         return call_failure(sal,ev);
1433                         break;
1434                 case EXOSIP_CALL_REQUESTFAILURE:
1435                 case EXOSIP_CALL_GLOBALFAILURE:
1436                 case EXOSIP_CALL_SERVERFAILURE:
1437                         ms_message("CALL_REQUESTFAILURE or GLOBALFAILURE or SERVERFAILURE\n");
1438                         return call_failure(sal,ev);
1439                         break;
1440                 case EXOSIP_CALL_RELEASED:
1441                         ms_message("CALL_RELEASED\n");
1442                         call_released(sal, ev);
1443                         break;
1444                 case EXOSIP_CALL_INVITE:
1445                         ms_message("CALL_NEW\n");
1446                         inc_new_call(sal,ev);
1447                         break;
1448                 case EXOSIP_CALL_REINVITE:
1449                         handle_reinvite(sal,ev);
1450                         break;
1451                 case EXOSIP_CALL_ACK:
1452                         ms_message("CALL_ACK");
1453                         handle_ack(sal,ev);
1454                         break;
1455                 case EXOSIP_CALL_REDIRECTED:
1456                         ms_message("CALL_REDIRECTED");
1457                         eXosip_default_action(ev);
1458                         break;
1459                 case EXOSIP_CALL_PROCEEDING:
1460                         ms_message("CALL_PROCEEDING");
1461                         call_proceeding(sal,ev);
1462                         break;
1463                 case EXOSIP_CALL_RINGING:
1464                         ms_message("CALL_RINGING");
1465                         call_ringing(sal,ev);
1466                         break;
1467                 case EXOSIP_CALL_MESSAGE_NEW:
1468                         ms_message("EXOSIP_CALL_MESSAGE_NEW");
1469                         call_message_new(sal,ev);
1470                         break;
1471                 case EXOSIP_CALL_MESSAGE_REQUESTFAILURE:
1472                         if (ev->did<0 && ev->response &&
1473                                 (ev->response->status_code==407 || ev->response->status_code==401)){
1474                                  return process_authentication(sal,ev);
1475                         }
1476                         break;
1477                 case EXOSIP_IN_SUBSCRIPTION_NEW:
1478                         ms_message("CALL_IN_SUBSCRIPTION_NEW ");
1479                         sal_exosip_subscription_recv(sal,ev);
1480                         break;
1481                 case EXOSIP_IN_SUBSCRIPTION_RELEASED:
1482                         ms_message("CALL_SUBSCRIPTION_NEW ");
1483                         sal_exosip_in_subscription_closed(sal,ev);
1484                         break;
1485                 case EXOSIP_SUBSCRIPTION_UPDATE:
1486                         ms_message("CALL_SUBSCRIPTION_UPDATE");
1487                         break;
1488                 case EXOSIP_SUBSCRIPTION_NOTIFY:
1489                         ms_message("CALL_SUBSCRIPTION_NOTIFY");
1490                         sal_exosip_notify_recv(sal,ev);
1491                         break;
1492                 case EXOSIP_SUBSCRIPTION_ANSWERED:
1493                         ms_message("EXOSIP_SUBSCRIPTION_ANSWERED, ev->sid=%i, ev->did=%i\n",ev->sid,ev->did);
1494                         sal_exosip_subscription_answered(sal,ev);
1495                         break;
1496                 case EXOSIP_SUBSCRIPTION_CLOSED:
1497                         ms_message("EXOSIP_SUBSCRIPTION_CLOSED\n");
1498                         sal_exosip_subscription_closed(sal,ev);
1499                         break;
1500                 case EXOSIP_SUBSCRIPTION_REQUESTFAILURE:   /**< announce a request failure      */
1501                         if (ev->response && (ev->response->status_code == 407 || ev->response->status_code == 401)){
1502                                 return process_authentication(sal,ev);
1503                         }
1504         case EXOSIP_SUBSCRIPTION_SERVERFAILURE:
1505                 case EXOSIP_SUBSCRIPTION_GLOBALFAILURE:
1506                         sal_exosip_subscription_closed(sal,ev);
1507                         break;
1508                 case EXOSIP_REGISTRATION_FAILURE:
1509                         ms_message("REGISTRATION_FAILURE\n");
1510                         return registration_failure(sal,ev);
1511                         break;
1512                 case EXOSIP_REGISTRATION_SUCCESS:
1513                         authentication_ok(sal,ev);
1514                         registration_success(sal,ev);
1515                         break;
1516                 case EXOSIP_MESSAGE_NEW:
1517                         other_request(sal,ev);
1518                         break;
1519                 case EXOSIP_MESSAGE_PROCEEDING:
1520                 case EXOSIP_MESSAGE_ANSWERED:
1521                 case EXOSIP_MESSAGE_REDIRECTED:
1522                 case EXOSIP_MESSAGE_SERVERFAILURE:
1523                 case EXOSIP_MESSAGE_GLOBALFAILURE:
1524                         other_request_reply(sal,ev);
1525                         break;
1526                 case EXOSIP_MESSAGE_REQUESTFAILURE:
1527                         if (ev->response && (ev->response->status_code == 407 || ev->response->status_code == 401)){
1528                                 return process_authentication(sal,ev);
1529                         }
1530                         other_request_reply(sal,ev);
1531                         break;
1532                 default:
1533                         ms_message("Unhandled exosip event ! %i",ev->type);
1534                         break;
1535         }
1536         return TRUE;
1537 }
1538
1539 int sal_iterate(Sal *sal){
1540         eXosip_event_t *ev;
1541         while((ev=eXosip_event_wait(0,0))!=NULL){
1542                 if (process_event(sal,ev))
1543                         eXosip_event_free(ev);
1544         }
1545         eXosip_lock();
1546         eXosip_automatic_refresh();
1547         eXosip_unlock();
1548         return 0;
1549 }
1550
1551 int sal_register(SalOp *h, const char *proxy, const char *from, int expires){
1552         osip_message_t *msg;
1553         sal_op_set_route(h,proxy);
1554         if (h->rid==-1){
1555                 eXosip_lock();
1556                 h->rid=eXosip_register_build_initial_register(from,proxy,sal_op_get_contact(h),expires,&msg);
1557                 sal_add_register(h->base.root,h);
1558         }else{
1559                 eXosip_lock();
1560                 eXosip_register_build_register(h->rid,expires,&msg);
1561         }
1562         eXosip_register_send_register(h->rid,msg);
1563         eXosip_unlock();
1564         h->expires=expires;
1565         return 0;
1566 }
1567
1568 int sal_unregister(SalOp *h){
1569         osip_message_t *msg=NULL;
1570         eXosip_lock();
1571         eXosip_register_build_register(h->rid,0,&msg);
1572         if (msg) eXosip_register_send_register(h->rid,msg);
1573         else ms_warning("Could not build unREGISTER !");
1574         eXosip_unlock();
1575         return 0;
1576 }
1577
1578
1579
1580 SalAddress * sal_address_new(const char *uri){
1581         osip_from_t *from;
1582         osip_from_init(&from);
1583         if (osip_from_parse(from,uri)!=0){
1584                 osip_from_free(from);
1585                 return NULL;
1586         }
1587         return (SalAddress*)from;
1588 }
1589
1590 SalAddress * sal_address_clone(const SalAddress *addr){
1591         osip_from_t *ret=NULL;
1592         osip_from_clone((osip_from_t*)addr,&ret);
1593         return (SalAddress*)ret;
1594 }
1595
1596 #define null_if_empty(s) (((s)!=NULL && (s)[0]!='\0') ? (s) : NULL )
1597
1598 const char *sal_address_get_scheme(const SalAddress *addr){
1599         const osip_from_t *u=(const osip_from_t*)addr;
1600         return null_if_empty(u->url->scheme);
1601 }
1602
1603 const char *sal_address_get_display_name(const SalAddress* addr){
1604         const osip_from_t *u=(const osip_from_t*)addr;
1605         return null_if_empty(u->displayname);
1606 }
1607
1608 const char *sal_address_get_username(const SalAddress *addr){
1609         const osip_from_t *u=(const osip_from_t*)addr;
1610         return null_if_empty(u->url->username);
1611 }
1612
1613 const char *sal_address_get_domain(const SalAddress *addr){
1614         const osip_from_t *u=(const osip_from_t*)addr;
1615         return null_if_empty(u->url->host);
1616 }
1617
1618 void sal_address_set_display_name(SalAddress *addr, const char *display_name){
1619         osip_from_t *u=(osip_from_t*)addr;
1620         if (u->displayname!=NULL){
1621                 osip_free(u->displayname);
1622                 u->displayname=NULL;
1623         }
1624         if (display_name!=NULL)
1625                 u->displayname=osip_strdup(display_name);
1626 }
1627
1628 void sal_address_set_username(SalAddress *addr, const char *username){
1629         osip_from_t *uri=(osip_from_t*)addr;
1630         if (uri->url->username!=NULL){
1631                 osip_free(uri->url->username);
1632                 uri->url->username=NULL;
1633         }
1634         if (username)
1635                 uri->url->username=osip_strdup(username);
1636 }
1637
1638 void sal_address_set_domain(SalAddress *addr, const char *host){
1639         osip_from_t *uri=(osip_from_t*)addr;
1640         if (uri->url->host!=NULL){
1641                 osip_free(uri->url->host);
1642                 uri->url->host=NULL;
1643         }
1644         if (host)
1645                 uri->url->host=osip_strdup(host);
1646 }
1647
1648 void sal_address_set_port(SalAddress *addr, const char *port){
1649         osip_from_t *uri=(osip_from_t*)addr;
1650         if (uri->url->port!=NULL){
1651                 osip_free(uri->url->port);
1652                 uri->url->port=NULL;
1653         }
1654         if (port)
1655                 uri->url->port=osip_strdup(port);
1656 }
1657
1658 void sal_address_set_port_int(SalAddress *uri, int port){
1659         char tmp[12];
1660         if (port==5060){
1661                 /*this is the default, special case to leave the port field blank*/
1662                 sal_address_set_port(uri,NULL);
1663                 return;
1664         }
1665         snprintf(tmp,sizeof(tmp),"%i",port);
1666         sal_address_set_port(uri,tmp);
1667 }
1668
1669 void sal_address_clean(SalAddress *addr){
1670         osip_generic_param_freelist(& ((osip_from_t*)addr)->gen_params);
1671         osip_uri_param_freelist(& ((osip_from_t*)addr)->url->url_params);
1672 }
1673
1674 char *sal_address_as_string(const SalAddress *u){
1675         char *tmp,*ret;
1676         osip_from_to_str((osip_from_t*)u,&tmp);
1677         ret=ms_strdup(tmp);
1678         osip_free(tmp);
1679         return ret;
1680 }
1681
1682 char *sal_address_as_string_uri_only(const SalAddress *u){
1683         char *tmp=NULL,*ret;
1684         osip_uri_to_str(((osip_from_t*)u)->url,&tmp);
1685         ret=ms_strdup(tmp);
1686         osip_free(tmp);
1687         return ret;
1688 }
1689
1690 void sal_address_destroy(SalAddress *u){
1691         osip_from_free((osip_from_t*)u);
1692 }
1693 void sal_set_keepalive_period(Sal *ctx,unsigned int value) {
1694         eXosip_set_option (EXOSIP_OPT_UDP_KEEP_ALIVE, &value);
1695 }
1696