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         sal->sock=-1;
 255         return sal;
 256 }
 257
 258 void sal_uninit(Sal* sal){
 259         eXosip_quit();
 260         ms_free(sal);
 261 }
 262
 263 void sal_set_user_pointer(Sal *sal, void *user_data){
 264         sal->up=user_data;
 265 }
 266
 267 void *sal_get_user_pointer(const Sal *sal){
 268         return sal->up;
 269 }
 270
 271 static void unimplemented_stub(){
 272         ms_warning("Unimplemented SAL callback");
 273 }
 274
 275 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs){
 276         memcpy(&ctx->callbacks,cbs,sizeof(*cbs));
 277         if (ctx->callbacks.call_received==NULL)
 278                 ctx->callbacks.call_received=(SalOnCallReceived)unimplemented_stub;
 279         if (ctx->callbacks.call_ringing==NULL)
 280                 ctx->callbacks.call_ringing=(SalOnCallRinging)unimplemented_stub;
 281         if (ctx->callbacks.call_accepted==NULL)
 282                 ctx->callbacks.call_accepted=(SalOnCallAccepted)unimplemented_stub;
 283         if (ctx->callbacks.call_failure==NULL)
 284                 ctx->callbacks.call_failure=(SalOnCallFailure)unimplemented_stub;
 285         if (ctx->callbacks.call_terminated==NULL)
 286                 ctx->callbacks.call_terminated=(SalOnCallTerminated)unimplemented_stub;
 287         if (ctx->callbacks.call_updated==NULL)
 288                 ctx->callbacks.call_updated=(SalOnCallUpdated)unimplemented_stub;
 289         if (ctx->callbacks.auth_requested==NULL)
 290                 ctx->callbacks.auth_requested=(SalOnAuthRequested)unimplemented_stub;
 291         if (ctx->callbacks.auth_success==NULL)
 292                 ctx->callbacks.auth_success=(SalOnAuthSuccess)unimplemented_stub;
 293         if (ctx->callbacks.register_success==NULL)
 294                 ctx->callbacks.register_success=(SalOnRegisterSuccess)unimplemented_stub;
 295         if (ctx->callbacks.register_failure==NULL)
 296                 ctx->callbacks.register_failure=(SalOnRegisterFailure)unimplemented_stub;
 297         if (ctx->callbacks.dtmf_received==NULL)
 298                 ctx->callbacks.dtmf_received=(SalOnDtmfReceived)unimplemented_stub;
 299         if (ctx->callbacks.notify==NULL)
 300                 ctx->callbacks.notify=(SalOnNotify)unimplemented_stub;
 301         if (ctx->callbacks.notify_presence==NULL)
 302                 ctx->callbacks.notify_presence=(SalOnNotifyPresence)unimplemented_stub;
 303         if (ctx->callbacks.subscribe_received==NULL)
 304                 ctx->callbacks.subscribe_received=(SalOnSubscribeReceived)unimplemented_stub;
 305         if (ctx->callbacks.text_received==NULL)
 306                 ctx->callbacks.text_received=(SalOnTextReceived)unimplemented_stub;
 307         if (ctx->callbacks.internal_message==NULL)
 308                 ctx->callbacks.internal_message=(SalOnInternalMsg)unimplemented_stub;
 309         if (ctx->callbacks.ping_reply==NULL)
 310                 ctx->callbacks.ping_reply=(SalOnPingReply)unimplemented_stub;
 311 }
 312
 313
 314 static ortp_socket_t create_socket(int pf, int proto, const char *addr, int local_port){
 315         struct addrinfo hints;
 316         struct addrinfo *res=NULL;
 317         ortp_socket_t sock;
 318         int optval;
 319         char tmp[20];
 320         int err;
 321
 322         sock=socket(pf,(proto==IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM,0);
 323         if (sock<0) {
 324                 ms_error("Fail to create socket");
 325                 return -1;
 326         }
 327         snprintf(tmp,sizeof(tmp)-1,"%i",local_port);
 328         memset (&hints,0,sizeof(hints));
 329         hints.ai_family=(pf==PF_INET) ? AF_INET : AF_INET6;
 330         hints.ai_socktype=(proto==IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM;
 331
 332         if ((err=getaddrinfo(addr,
 333                 tmp,
 334                 &hints,&res))<0) {
 335                 ms_error("create_socket: getaddrinfo() failed: %s",gai_strerror(err));
 336                 close_socket(sock);
 337                 return -1;
 338         }
 339         if (bind(sock,(struct sockaddr*)res->ai_addr,res->ai_addrlen)<0){
 340                 ms_error("Bind socket to localhost:%i failed: %s",local_port,getSocketError());
 341                 freeaddrinfo(res);
 342                 close_socket(sock);
 343                 return -1;
 344         }
 345         freeaddrinfo(res);
 346         optval=1;
 347         if (setsockopt (sock, SOL_SOCKET, SO_REUSEADDR,
 348                                 (SOCKET_OPTION_VALUE)&optval, sizeof (optval))<0){
 349                 ms_warning("Fail to set SO_REUSEADDR");
 350         }
 351         /*set_non_blocking_socket(sock);*/
 352         return sock;
 353 }
 354
 355
 356 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure){
 357         int err;
 358         bool_t ipv6;
 359         int proto=IPPROTO_UDP;
 360
 361         if (ctx->running){
 362                 eXosip_quit();
 363                 eXosip_init();
 364         }
 365         err=0;
 366         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
 367                                         version of eXosip, which is not the case*/
 368         /*see if it looks like an IPv6 address*/
 369         ipv6=strchr(addr,':')!=NULL;
 370         eXosip_enable_ipv6(ipv6);
 371
 372         if (tr!=SalTransportDatagram || is_secure){
 373                 ms_fatal("SIP over TCP or TLS or DTLS is not supported yet.");
 374                 return -1;
 375         }
 376         ctx->sock=create_socket(ipv6 ?  PF_INET6 : PF_INET, proto, addr, port);
 377         if (ctx->sock==-1) return -1;
 378         ms_message("Exosip is given socket %i",ctx->sock);
 379         eXosip_set_socket(proto,ctx->sock,port);
 380         /*
 381         err=eXosip_listen_addr(proto, addr, port, ipv6 ?  PF_INET6 : PF_INET, 0);
 382         */
 383         ctx->running=TRUE;
 384         return err;
 385 }
 386
 387 ortp_socket_t sal_get_socket(Sal *ctx){
 388         return ctx->sock;
 389 }
 390
 391 void sal_set_user_agent(Sal *ctx, const char *user_agent){
 392         eXosip_set_user_agent(user_agent);
 393 }
 394
 395 void sal_use_session_timers(Sal *ctx, int expires){
 396         ctx->session_expires=expires;
 397 }
 398
 399 MSList *sal_get_pending_auths(Sal *sal){
 400         return ms_list_copy(sal->pending_auths);
 401 }
 402
 403 static int extract_received_rport(osip_message_t *msg, const char **received, int *rportval){
 404         osip_via_t *via=NULL;
 405         osip_generic_param_t *param=NULL;
 406         const char *rport;
 407
 408         osip_message_get_via(msg,0,&via);
 409         if (!via) return -1;
 410         osip_via_param_get_byname(via,"rport",&param);
 411         if (param) {
 412                 rport=param->gvalue;
 413                 if (rport && rport[0]!='\0') *rportval=atoi(rport);
 414                 else *rportval=5060;
 415         }
 416         param=NULL;
 417         osip_via_param_get_byname(via,"received",&param);
 418         if (param) *received=param->gvalue;
 419         else return -1;
 420         return 0;
 421 }
 422
 423 static void set_sdp(osip_message_t *sip,sdp_message_t *msg){
 424         int sdplen;
 425         char clen[10];
 426         char *sdp=NULL;
 427         sdp_message_to_str(msg,&sdp);
 428         sdplen=strlen(sdp);
 429         snprintf(clen,sizeof(clen),"%i",sdplen);
 430         osip_message_set_body(sip,sdp,sdplen);
 431         osip_message_set_content_type(sip,"application/sdp");
 432         osip_message_set_content_length(sip,clen);
 433         osip_free(sdp);
 434 }
 435
 436 static void set_sdp_from_desc(osip_message_t *sip, const SalMediaDescription *desc){
 437         sdp_message_t *msg=media_description_to_sdp(desc);
 438         if (msg==NULL) {
 439                 ms_error("Fail to print sdp message !");
 440                 return;
 441         }
 442         set_sdp(sip,msg);
 443         sdp_message_free(msg);
 444 }
 445
 446 static void sdp_process(SalOp *h){
 447         ms_message("Doing SDP offer/answer process");
 448         if (h->result){
 449                 sal_media_description_unref(h->result);
 450         }
 451         h->result=sal_media_description_new();
 452         if (h->sdp_offering){
 453                 offer_answer_initiate_outgoing(h->base.local_media,h->base.remote_media,h->result);
 454         }else{
 455                 int i;
 456                 offer_answer_initiate_incoming(h->base.local_media,h->base.remote_media,h->result);
 457                 h->sdp_answer=media_description_to_sdp(h->result);
 458                 strcpy(h->result->addr,h->base.remote_media->addr);
 459                 h->result->bandwidth=h->base.remote_media->bandwidth;
 460                 for(i=0;i<h->result->nstreams;++i){
 461                         if (h->result->streams[i].port>0){
 462                                 strcpy(h->result->streams[i].addr,h->base.remote_media->streams[i].addr);
 463                                 h->result->streams[i].ptime=h->base.remote_media->streams[i].ptime;
 464                                 h->result->streams[i].bandwidth=h->base.remote_media->streams[i].bandwidth;
 465                                 h->result->streams[i].port=h->base.remote_media->streams[i].port;
 466                         }
 467                 }
 468         }
 469
 470 }
 471
 472 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc){
 473         if (desc)
 474                 sal_media_description_ref(desc);
 475         if (h->base.local_media)
 476                 sal_media_description_unref(h->base.local_media);
 477         h->base.local_media=desc;
 478         return 0;
 479 }
 480
 481 int sal_call(SalOp *h, const char *from, const char *to){
 482         int err;
 483         osip_message_t *invite=NULL;
 484         sal_op_set_from(h,from);
 485         sal_op_set_to(h,to);
 486         sal_exosip_fix_route(h);
 487         err=eXosip_call_build_initial_invite(&invite,to,from,sal_op_get_route(h),"Phone call");
 488         if (err!=0){
 489                 ms_error("Could not create call.");
 490                 return -1;
 491         }
 492         if (h->base.contact){
 493                 _osip_list_set_empty(&invite->contacts,(void (*)(void*))osip_contact_free);
 494                 osip_message_set_contact(invite,h->base.contact);
 495         }
 496         if (h->base.root->session_expires!=0){
 497                 osip_message_set_header(invite, "Session-expires", "200");
 498                 osip_message_set_supported(invite, "timer");
 499         }
 500         if (h->base.local_media){
 501                 h->sdp_offering=TRUE;
 502                 set_sdp_from_desc(invite,h->base.local_media);
 503         }else h->sdp_offering=FALSE;
 504         eXosip_lock();
 505         err=eXosip_call_send_initial_invite(invite);
 506         eXosip_unlock();
 507         h->cid=err;
 508         if (err<0){
 509                 ms_error("Fail to send invite !");
 510                 return -1;
 511         }else{
 512                 sal_add_call(h->base.root,h);
 513         }
 514         return 0;
 515 }
 516
 517 int sal_call_notify_ringing(SalOp *h){
 518         eXosip_lock();
 519         eXosip_call_send_answer(h->tid,180,NULL);
 520         eXosip_unlock();
 521         return 0;
 522 }
 523
 524 int sal_call_accept(SalOp * h){
 525         osip_message_t *msg;
 526         const char *contact=sal_op_get_contact(h);
 527         /* sends a 200 OK */
 528         int err=eXosip_call_build_answer(h->tid,200,&msg);
 529         if (err<0 || msg==NULL){
 530                 ms_error("Fail to build answer for call: err=%i",err);
 531                 return -1;
 532         }
 533         if (h->base.root->session_expires!=0){
 534                 if (h->supports_session_timers) osip_message_set_supported(msg, "timer");
 535         }
 536
 537         if (contact) {
 538                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 539                 osip_message_set_contact(msg,contact);
 540         }
 541
 542         if (h->base.local_media){
 543                 /*this is the case where we received an invite without SDP*/
 544                 if (h->sdp_offering) {
 545                         set_sdp_from_desc(msg,h->base.local_media);
 546                 }else{
 547                         if (h->sdp_answer)
 548                                 set_sdp(msg,h->sdp_answer);
 549                 }
 550         }else{
 551                 ms_error("You are accepting a call but not defined any media capabilities !");
 552         }
 553         eXosip_call_send_answer(h->tid,200,msg);
 554         return 0;
 555 }
 556
 557 int sal_call_decline(SalOp *h, SalReason reason, const char *redirect){
 558         if (reason==SalReasonBusy){
 559                 eXosip_lock();
 560                 eXosip_call_send_answer(h->tid,486,NULL);
 561                 eXosip_unlock();
 562         }
 563         else if (reason==SalReasonTemporarilyUnavailable){
 564                 eXosip_lock();
 565                 eXosip_call_send_answer(h->tid,480,NULL);
 566                 eXosip_unlock();
 567         }else if (reason==SalReasonDoNotDisturb){
 568                 eXosip_lock();
 569                 eXosip_call_send_answer(h->tid,600,NULL);
 570                 eXosip_unlock();
 571         }else if (reason==SalReasonMedia){
 572                 eXosip_lock();
 573                 eXosip_call_send_answer(h->tid,415,NULL);
 574                 eXosip_unlock();
 575         }else if (redirect!=NULL && reason==SalReasonRedirect){
 576                 osip_message_t *msg;
 577                 int code;
 578                 if (strstr(redirect,"sip:")!=0) code=302;
 579                 else code=380;
 580                 eXosip_lock();
 581                 eXosip_call_build_answer(h->tid,code,&msg);
 582                 osip_message_set_contact(msg,redirect);
 583                 eXosip_call_send_answer(h->tid,code,msg);
 584                 eXosip_unlock();
 585         }else sal_call_terminate(h);
 586         return 0;
 587 }
 588
 589 SalMediaDescription * sal_call_get_final_media_description(SalOp *h){
 590         if (h->base.local_media && h->base.remote_media && !h->result){
 591                 sdp_process(h);
 592         }
 593         return h->result;
 594 }
 595
 596 int sal_ping(SalOp *op, const char *from, const char *to){
 597         osip_message_t *options=NULL;
 598
 599         sal_op_set_from(op,from);
 600         sal_op_set_to(op,to);
 601         eXosip_options_build_request (&options, sal_op_get_to(op),
 602                         sal_op_get_from(op),sal_op_get_route(op));
 603         if (options){
 604                 if (op->base.root->session_expires!=0){
 605                         osip_message_set_header(options, "Session-expires", "200");
 606                         osip_message_set_supported(options, "timer");
 607                 }
 608                 sal_add_other(sal_op_get_sal(op),op,options);
 609                 return eXosip_options_send_request(options);
 610         }
 611         return -1;
 612 }
 613
 614 int sal_refer_accept(SalOp *op){
 615         osip_message_t *msg=NULL;
 616         int err=0;
 617         eXosip_lock();
 618         err = eXosip_call_build_notify(op->did,EXOSIP_SUBCRSTATE_ACTIVE,&msg);
 619         if(msg != NULL)
 620         {
 621                 osip_message_set_header(msg,(const char *)"event","refer");
 622                 osip_message_set_content_type(msg,"message/sipfrag");
 623                 osip_message_set_body(msg,"SIP/2.0 100 Trying",sizeof("SIP/2.0 100 Trying"));
 624                 eXosip_call_send_request(op->did,msg);
 625         }
 626         else
 627         {
 628                 ms_error("could not get a notify built\n");
 629         }
 630         eXosip_unlock();
 631         return err;
 632 }
 633
 634 int sal_refer(SalOp *h, const char *refer_to){
 635         osip_message_t *msg=NULL;
 636         int err=0;
 637         eXosip_lock();
 638         eXosip_call_build_refer(h->did,refer_to, &msg);
 639         if (msg) err=eXosip_call_send_request(h->did, msg);
 640         else err=-1;
 641         eXosip_unlock();
 642         return err;
 643 }
 644
 645 int sal_call_send_dtmf(SalOp *h, char dtmf){
 646         osip_message_t *msg=NULL;
 647         char dtmf_body[128];
 648         char clen[10];
 649
 650         eXosip_lock();
 651         eXosip_call_build_info(h->did,&msg);
 652         if (msg){
 653                 snprintf(dtmf_body, sizeof(dtmf_body), "Signal=%c\r\nDuration=250\r\n", dtmf);
 654                 osip_message_set_body(msg,dtmf_body,strlen(dtmf_body));
 655                 osip_message_set_content_type(msg,"application/dtmf-relay");
 656                 snprintf(clen,sizeof(clen),"%lu",(unsigned long)strlen(dtmf_body));
 657                 osip_message_set_content_length(msg,clen);
 658                 eXosip_call_send_request(h->did,msg);
 659         }
 660         eXosip_unlock();
 661         return 0;
 662 }
 663
 664 int sal_call_terminate(SalOp *h){
 665         eXosip_lock();
 666         eXosip_call_terminate(h->cid,h->did);
 667         eXosip_unlock();
 668         sal_remove_call(h->base.root,h);
 669         return 0;
 670 }
 671
 672 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info){
 673         if (h->pending_auth){
 674                 const char *userid;
 675                 if (info->userid==NULL || info->userid[0]=='\0') userid=info->username;
 676                 else userid=info->userid;
 677                 ms_message("Authentication info for %s %s added to eXosip", info->username,info->realm);
 678                 eXosip_add_authentication_info (info->username,userid,
 679                                       info->password, NULL,info->realm);
 680                 eXosip_lock();
 681                 eXosip_default_action(h->pending_auth);
 682                 eXosip_unlock();
 683                 ms_message("eXosip_default_action() done");
 684                 eXosip_clear_authentication_info();
 685                 eXosip_event_free(h->pending_auth);
 686                 sal_remove_pending_auth(sal_op_get_sal(h),h);
 687                 h->pending_auth=NULL;
 688         }
 689 }
 690
 691 static void set_network_origin(SalOp *op, osip_message_t *req){
 692         const char *received=NULL;
 693         int rport=5060;
 694         char origin[64];
 695         if (extract_received_rport(req,&received,&rport)!=0){
 696                 osip_via_t *via=NULL;
 697                 char *tmp;
 698                 osip_message_get_via(req,0,&via);
 699                 received=osip_via_get_host(via);
 700                 tmp=osip_via_get_port(via);
 701                 if (tmp) rport=atoi(tmp);
 702         }
 703         snprintf(origin,sizeof(origin)-1,"sip:%s:%i",received,rport);
 704         __sal_op_set_network_origin(op,origin);
 705 }
 706
 707 static SalOp *find_op(Sal *sal, eXosip_event_t *ev){
 708         if (ev->cid>0){
 709                 return sal_find_call(sal,ev->cid);
 710         }
 711         if (ev->rid>0){
 712                 return sal_find_register(sal,ev->rid);
 713         }
 714         if (ev->response) return sal_find_other(sal,ev->response);
 715         return NULL;
 716 }
 717
 718 static void inc_new_call(Sal *sal, eXosip_event_t *ev){
 719         SalOp *op=sal_op_new(sal);
 720         osip_from_t *from,*to;
 721         osip_call_info_t *call_info;
 722         char *tmp;
 723         sdp_message_t *sdp=eXosip_get_sdp_info(ev->request);
 724
 725         set_network_origin(op,ev->request);
 726
 727         if (sdp){
 728                 op->sdp_offering=FALSE;
 729                 op->base.remote_media=sal_media_description_new();
 730                 sdp_to_media_description(sdp,op->base.remote_media);
 731                 sdp_message_free(sdp);
 732         }else op->sdp_offering=TRUE;
 733
 734         from=osip_message_get_from(ev->request);
 735         to=osip_message_get_to(ev->request);
 736         osip_from_to_str(from,&tmp);
 737         sal_op_set_from(op,tmp);
 738         osip_free(tmp);
 739         osip_from_to_str(to,&tmp);
 740         sal_op_set_to(op,tmp);
 741         osip_free(tmp);
 742
 743         osip_message_get_call_info(ev->request,0,&call_info);
 744         if(call_info)
 745         {
 746                 osip_call_info_to_str(call_info,&tmp);
 747                 if( strstr(tmp,"answer-after=") != NULL)
 748                 {
 749                         op->auto_answer_asked=TRUE;
 750                         ms_message("The caller asked to automatically answer the call(Emergency?)\n");
 751                 }
 752                 osip_free(tmp);
 753         }
 754
 755         op->tid=ev->tid;
 756         op->cid=ev->cid;
 757         op->did=ev->did;
 758
 759         sal_add_call(op->base.root,op);
 760         sal->callbacks.call_received(op);
 761 }
 762
 763 static void handle_reinvite(Sal *sal,  eXosip_event_t *ev){
 764         SalOp *op=find_op(sal,ev);
 765         sdp_message_t *sdp;
 766         osip_message_t *msg=NULL;
 767
 768         if (op==NULL) {
 769                 ms_warning("Reinvite for non-existing operation !");
 770                 return;
 771         }
 772         op->reinvite=TRUE;
 773         op->tid=ev->tid;
 774         sdp=eXosip_get_sdp_info(ev->request);
 775         if (op->base.remote_media){
 776                 sal_media_description_unref(op->base.remote_media);
 777                 op->base.remote_media=NULL;
 778         }
 779         eXosip_lock();
 780         eXosip_call_build_answer(ev->tid,200,&msg);
 781         eXosip_unlock();
 782         if (msg==NULL) return;
 783         if (op->base.root->session_expires!=0){
 784                 if (op->supports_session_timers) osip_message_set_supported(msg, "timer");
 785         }
 786         if (op->base.contact){
 787                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 788                 osip_message_set_contact(msg,op->base.contact);
 789         }
 790         if (sdp){
 791                 op->sdp_offering=FALSE;
 792                 op->base.remote_media=sal_media_description_new();
 793                 sdp_to_media_description(sdp,op->base.remote_media);
 794                 sdp_message_free(sdp);
 795                 sdp_process(op);
 796                 set_sdp(msg,op->sdp_answer);
 797         }else {
 798                 op->sdp_offering=TRUE;
 799                 set_sdp_from_desc(msg,op->base.local_media);
 800         }
 801         eXosip_lock();
 802         eXosip_call_send_answer(ev->tid,200,msg);
 803         eXosip_unlock();
 804 }
 805
 806 static void handle_ack(Sal *sal,  eXosip_event_t *ev){
 807         SalOp *op=find_op(sal,ev);
 808         sdp_message_t *sdp;
 809
 810         if (op==NULL) {
 811                 ms_warning("ack for non-existing call !");
 812                 return;
 813         }
 814         sdp=eXosip_get_sdp_info(ev->ack);
 815         if (sdp){
 816                 op->base.remote_media=sal_media_description_new();
 817                 sdp_to_media_description(sdp,op->base.remote_media);
 818                 sdp_process(op);
 819                 sdp_message_free(sdp);
 820         }
 821         if (op->reinvite){
 822                 sal->callbacks.call_updated(op);
 823                 op->reinvite=FALSE;
 824         }else{
 825                 sal->callbacks.call_ack(op);
 826         }
 827 }
 828
 829 static void update_contact_from_response(SalOp *op, osip_message_t *response){
 830         const char *received;
 831         int rport;
 832         if (extract_received_rport(response,&received,&rport)==0){
 833                 const char *contact=sal_op_get_contact(op);
 834                 if (!contact){
 835                         /*no contact given yet, use from instead*/
 836                         contact=sal_op_get_from(op);
 837                 }
 838                 if (contact){
 839                         SalAddress *addr=sal_address_new(contact);
 840                         char *tmp;
 841                         sal_address_set_domain(addr,received);
 842                         sal_address_set_port_int(addr,rport);
 843                         tmp=sal_address_as_string(addr);
 844                         ms_message("Contact address updated to %s for this dialog",tmp);
 845                         sal_op_set_contact(op,tmp);
 846                         ms_free(tmp);
 847                 }
 848         }
 849 }
 850
 851 static int call_proceeding(Sal *sal, eXosip_event_t *ev){
 852         SalOp *op=find_op(sal,ev);
 853
 854         if (op==NULL) {
 855                 ms_warning("This call has been canceled.");
 856                 eXosip_lock();
 857                 eXosip_call_terminate(ev->cid,ev->did);
 858                 eXosip_unlock();
 859                 return -1;
 860         }
 861         op->did=ev->did;
 862         op->tid=ev->tid;
 863
 864         /* update contact if received and rport are set by the server
 865          note: will only be used by remote for next INVITE, if any...*/
 866         update_contact_from_response(op,ev->response);
 867         return 0;
 868 }
 869
 870 static void call_ringing(Sal *sal, eXosip_event_t *ev){
 871         sdp_message_t *sdp;
 872         SalOp *op=find_op(sal,ev);
 873         if (call_proceeding(sal, ev)==-1) return;
 874
 875         sdp=eXosip_get_sdp_info(ev->response);
 876         if (sdp){
 877                 op->base.remote_media=sal_media_description_new();
 878                 sdp_to_media_description(sdp,op->base.remote_media);
 879                 sdp_message_free(sdp);
 880                 if (op->base.local_media) sdp_process(op);
 881         }
 882         sal->callbacks.call_ringing(op);
 883 }
 884
 885 static void call_accepted(Sal *sal, eXosip_event_t *ev){
 886         sdp_message_t *sdp;
 887         osip_message_t *msg=NULL;
 888         SalOp *op=find_op(sal,ev);
 889         const char *contact;
 890
 891         if (op==NULL){
 892                 ms_error("A closed call is accepted ?");
 893                 return;
 894         }
 895         sdp=eXosip_get_sdp_info(ev->response);
 896         if (sdp){
 897                 op->base.remote_media=sal_media_description_new();
 898                 sdp_to_media_description(sdp,op->base.remote_media);
 899                 sdp_message_free(sdp);
 900                 if (op->base.local_media) sdp_process(op);
 901         }
 902         eXosip_call_build_ack(ev->did,&msg);
 903         contact=sal_op_get_contact(op);
 904         if (contact) {
 905                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 906                 osip_message_set_contact(msg,contact);
 907         }
 908         if (op->sdp_answer)
 909                         set_sdp(msg,op->sdp_answer);
 910         eXosip_call_send_ack(ev->did,msg);
 911         sal->callbacks.call_accepted(op);
 912 }
 913
 914 static void call_terminated(Sal *sal, eXosip_event_t *ev){
 915         char *from;
 916         SalOp *op=find_op(sal,ev);
 917         if (op==NULL){
 918                 ms_warning("Call terminated for already closed call ?");
 919                 return;
 920         }
 921         osip_from_to_str(ev->request->from,&from);
 922         sal_remove_call(sal,op);
 923         op->cid=-1;
 924         sal->callbacks.call_terminated(op,from);
 925         osip_free(from);
 926 }
 927
 928 static void call_released(Sal *sal, eXosip_event_t *ev){
 929         SalOp *op=find_op(sal,ev);
 930         if (op==NULL){
 931                 ms_warning("No op associated to this call_released()");
 932                 return;
 933         }
 934         op->cid=-1;
 935         if (op->did==-1)
 936                 sal->callbacks.call_failure(op,SalErrorNoResponse,SalReasonUnknown,NULL);
 937 }
 938
 939 static int get_auth_data_from_response(osip_message_t *resp, const char **realm, const char **username){
 940         const char *prx_realm=NULL,*www_realm=NULL;
 941         osip_proxy_authenticate_t *prx_auth;
 942         osip_www_authenticate_t *www_auth;
 943
 944         *username=osip_uri_get_username(resp->from->url);
 945         prx_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->proxy_authenticates,0);
 946         www_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->www_authenticates,0);
 947         if (prx_auth!=NULL)
 948                 prx_realm=osip_proxy_authenticate_get_realm(prx_auth);
 949         if (www_auth!=NULL)
 950                 www_realm=osip_www_authenticate_get_realm(www_auth);
 951
 952         if (prx_realm){
 953                 *realm=prx_realm;
 954         }else if (www_realm){
 955                 *realm=www_realm;
 956         }else{
 957                 return -1;
 958         }
 959         return 0;
 960 }
 961
 962 static int get_auth_data_from_request(osip_message_t *msg, const char **realm, const char **username){
 963         osip_authorization_t *auth=NULL;
 964         osip_proxy_authorization_t *prx_auth=NULL;
 965
 966         *username=osip_uri_get_username(msg->from->url);
 967         osip_message_get_authorization(msg, 0, &auth);
 968         if (auth){
 969                 *realm=osip_authorization_get_realm(auth);
 970                 return 0;
 971         }
 972         osip_message_get_proxy_authorization(msg,0,&prx_auth);
 973         if (prx_auth){
 974                 *realm=osip_proxy_authorization_get_realm(prx_auth);
 975                 return 0;
 976         }
 977         return -1;
 978 }
 979
 980 static int get_auth_data(eXosip_event_t *ev, const char **realm, const char **username){
 981         if (ev->response && get_auth_data_from_response(ev->response,realm,username)==0) return 0;
 982         if (ev->request && get_auth_data_from_request(ev->request,realm,username)==0) return 0;
 983         return -1;
 984 }
 985
 986 int sal_op_get_auth_requested(SalOp *op, const char **realm, const char **username){
 987         if (op->pending_auth){
 988                 return get_auth_data(op->pending_auth,realm,username);
 989         }
 990         return -1;
 991 }
 992
 993 static bool_t process_authentication(Sal *sal, eXosip_event_t *ev){
 994         SalOp *op;
 995         const char *username,*realm;
 996         op=find_op(sal,ev);
 997         if (op==NULL){
 998                 ms_warning("No operation associated with this authentication !");
 999                 return TRUE;
1000         }
1001         if (get_auth_data(ev,&realm,&username)==0){
1002                 if (op->pending_auth!=NULL)
1003                         eXosip_event_free(op->pending_auth);
1004                 op->pending_auth=ev;
1005                 sal_add_pending_auth (sal,op);
1006                 sal->callbacks.auth_requested(op,realm,username);
1007                 return FALSE;
1008         }
1009         return TRUE;
1010 }
1011
1012 static void authentication_ok(Sal *sal, eXosip_event_t *ev){
1013         SalOp *op;
1014         const char *username,*realm;
1015         op=find_op(sal,ev);
1016         if (op==NULL){
1017                 ms_warning("No operation associated with this authentication_ok!");
1018                 return ;
1019         }
1020         if (get_auth_data(ev,&realm,&username)==0){
1021                 sal->callbacks.auth_success(op,realm,username);
1022         }
1023 }
1024
1025 static bool_t call_failure(Sal *sal, eXosip_event_t *ev){
1026         SalOp *op;
1027         int code=0;
1028         const char *reason=NULL;
1029         SalError error=SalErrorUnknown;
1030         SalReason sr=SalReasonUnknown;
1031
1032         op=(SalOp*)find_op(sal,ev);
1033
1034         if (op==NULL) {
1035                 ms_warning("Call failure reported for a closed call, ignored.");
1036                 return TRUE;
1037         }
1038
1039         if (ev->response){
1040                 code=osip_message_get_status_code(ev->response);
1041                 reason=osip_message_get_reason_phrase(ev->response);
1042         }
1043         switch(code)
1044         {
1045                 case 401:
1046                 case 407:
1047                         return process_authentication(sal,ev);
1048                         break;
1049                 case 400:
1050                         error=SalErrorUnknown;
1051                 break;
1052                 case 404:
1053                         error=SalErrorFailure;
1054                         sr=SalReasonNotFound;
1055                 break;
1056                 case 415:
1057                         error=SalErrorFailure;
1058                         sr=SalReasonMedia;
1059                 break;
1060                 case 422:
1061                         eXosip_default_action(ev);
1062                         return TRUE;
1063                 break;
1064                 case 480:
1065                         error=SalErrorFailure;
1066                         sr=SalReasonTemporarilyUnavailable;
1067                 case 486:
1068                         error=SalErrorFailure;
1069                         sr=SalReasonBusy;
1070                 break;
1071                 case 487:
1072                 break;
1073                 case 600:
1074                         error=SalErrorFailure;
1075                         sr=SalReasonDoNotDisturb;
1076                 break;
1077                 case 603:
1078                         error=SalErrorFailure;
1079                         sr=SalReasonDeclined;
1080                 break;
1081                 default:
1082                         if (code>0){
1083                                 error=SalErrorFailure;
1084                                 sr=SalReasonUnknown;
1085                         }else error=SalErrorNoResponse;
1086         }
1087         sal->callbacks.call_failure(op,error,sr,reason);
1088         return TRUE;
1089 }
1090
1091
1092 static void process_media_control_xml(Sal *sal, eXosip_event_t *ev){
1093         SalOp *op=find_op(sal,ev);
1094         osip_body_t *body=NULL;
1095
1096         if (op==NULL){
1097                 ms_warning("media control xml received without operation context!");
1098                 return ;
1099         }
1100
1101         osip_message_get_body(ev->request,0,&body);
1102         if (body && body->body!=NULL &&
1103                 strstr(body->body,"picture_fast_update")){
1104                 osip_message_t *ans=NULL;
1105                 ms_message("Receiving VFU request !");
1106                 if (sal->callbacks.vfu_request){
1107                         sal->callbacks.vfu_request(op);
1108                         eXosip_call_build_answer(ev->tid,200,&ans);
1109                         if (ans)
1110                                 eXosip_call_send_answer(ev->tid,200,ans);
1111                 }
1112         }
1113 }
1114
1115 static void process_dtmf_relay(Sal *sal, eXosip_event_t *ev){
1116         SalOp *op=find_op(sal,ev);
1117         osip_body_t *body=NULL;
1118
1119         if (op==NULL){
1120                 ms_warning("media dtmf relay received without operation context!");
1121                 return ;
1122         }
1123
1124         osip_message_get_body(ev->request,0,&body);
1125         if (body && body->body!=NULL){
1126                 osip_message_t *ans=NULL;
1127                 const char *name=strstr(body->body,"Signal");
1128                 if (name==NULL) name=strstr(body->body,"signal");
1129                 if (name==NULL) {
1130                         ms_warning("Could not extract the dtmf name from the SIP INFO.");
1131                 }else{
1132                         char tmp[2];
1133                         name+=strlen("signal");
1134                         if (sscanf(name," = %1s",tmp)==1){
1135                                 ms_message("Receiving dtmf %s via SIP INFO.",tmp);
1136                                 if (sal->callbacks.dtmf_received != NULL)
1137                                         sal->callbacks.dtmf_received(op, tmp[0]);
1138                         }
1139                 }
1140                 eXosip_call_build_answer(ev->tid,200,&ans);
1141                 if (ans)
1142                         eXosip_call_send_answer(ev->tid,200,ans);
1143         }
1144 }
1145
1146 static void call_message_new(Sal *sal, eXosip_event_t *ev){
1147         osip_message_t *ans=NULL;
1148         if (ev->request){
1149                 if (MSG_IS_INFO(ev->request)){
1150                         osip_content_type_t *ct;
1151                         ct=osip_message_get_content_type(ev->request);
1152                         if (ct && ct->subtype){
1153                                 if (strcmp(ct->subtype,"media_control+xml")==0)
1154                                         process_media_control_xml(sal,ev);
1155                                 else if (strcmp(ct->subtype,"dtmf-relay")==0)
1156                                         process_dtmf_relay(sal,ev);
1157                                 else {
1158                                         ms_message("Unhandled SIP INFO.");
1159                                         /*send an "Not implemented" answer*/
1160                                         eXosip_lock();
1161                                         eXosip_call_build_answer(ev->tid,501,&ans);
1162                                         if (ans)
1163                                                 eXosip_call_send_answer(ev->tid,501,ans);
1164                                         eXosip_unlock();
1165                                 }
1166                         }else{
1167                                 /*empty SIP INFO, probably to test we are alive. Send an empty answer*/
1168                                 eXosip_lock();
1169                                 eXosip_call_build_answer(ev->tid,200,&ans);
1170                                 if (ans)
1171                                         eXosip_call_send_answer(ev->tid,200,ans);
1172                                 eXosip_unlock();
1173                         }
1174                 }
1175                 if(MSG_IS_MESSAGE(ev->request)){
1176                         /* SIP messages could be received into call */
1177                         text_received(sal, ev);
1178                         eXosip_lock();
1179                         eXosip_call_build_answer(ev->tid,200,&ans);
1180                         if (ans)
1181                                 eXosip_call_send_answer(ev->tid,200,ans);
1182                         eXosip_unlock();
1183                 }
1184                 if(MSG_IS_REFER(ev->request)){
1185                         osip_header_t *h=NULL;
1186                         SalOp *op=find_op(sal,ev);
1187
1188                         ms_message("Receiving REFER request !");
1189                         osip_message_header_get_byname(ev->request,"Refer-To",0,&h);
1190                         eXosip_lock();
1191                         eXosip_call_build_answer(ev->tid,202,&ans);
1192                         if (ans)
1193                                 eXosip_call_send_answer(ev->tid,202,ans);
1194                         eXosip_unlock();
1195                         if (h){
1196                                 sal->callbacks.refer_received(sal,op,h->hvalue);
1197                         }
1198                         else
1199                         {
1200                                 ms_warning("cannot do anything with the refer without destination\n");
1201                         }
1202                 }
1203                 if(MSG_IS_NOTIFY(ev->request)){
1204                         osip_header_t *h=NULL;
1205                         char *from=NULL;
1206                         SalOp *op=find_op(sal,ev);
1207
1208                         ms_message("Receiving NOTIFY request !");
1209                         osip_from_to_str(ev->request->from,&from);
1210                         osip_message_header_get_byname(ev->request,"Event",0,&h);
1211                         if(h)
1212                                 sal->callbacks.notify(op,from,h->hvalue);
1213                         /*answer that we received the notify*/
1214                         eXosip_lock();
1215                         eXosip_call_build_answer(ev->tid,200,&ans);
1216                         if (ans)
1217                                 eXosip_call_send_answer(ev->tid,200,ans);
1218                         eXosip_unlock();
1219                         osip_free(from);
1220                 }
1221         }else ms_warning("call_message_new: No request ?");
1222 }
1223
1224 static void inc_update(Sal *sal, eXosip_event_t *ev){
1225         osip_message_t *msg=NULL;
1226         ms_message("Processing incoming UPDATE");
1227         eXosip_lock();
1228         eXosip_message_build_answer(ev->tid,200,&msg);
1229         if (msg!=NULL)
1230                 eXosip_message_send_answer(ev->tid,200,msg);
1231         eXosip_unlock();
1232 }
1233
1234 static bool_t comes_from_local_if(osip_message_t *msg){
1235         osip_via_t *via=NULL;
1236         osip_message_get_via(msg,0,&via);
1237         if (via){
1238                 const char *host;
1239                 host=osip_via_get_host(via);
1240                 if (strcmp(host,"127.0.0.1")==0 || strcmp(host,"::1")==0){
1241                         osip_generic_param_t *param=NULL;
1242                         osip_via_param_get_byname(via,"received",&param);
1243                         if (param==NULL) return TRUE;
1244                         if (param->gvalue &&
1245                                 (strcmp(param->gvalue,"127.0.0.1")==0 || strcmp(param->gvalue,"::1")==0)){
1246                                 return TRUE;
1247                         }
1248                 }
1249         }
1250         return FALSE;
1251 }
1252
1253 static void text_received(Sal *sal, eXosip_event_t *ev){
1254         osip_body_t *body=NULL;
1255         char *from=NULL,*msg;
1256
1257         osip_message_get_body(ev->request,0,&body);
1258         if (body==NULL){
1259                 ms_error("Could not get text message from SIP body");
1260                 return;
1261         }
1262         msg=body->body;
1263         osip_from_to_str(ev->request->from,&from);
1264         sal->callbacks.text_received(sal,from,msg);
1265         osip_free(from);
1266 }
1267
1268 static void other_request(Sal *sal, eXosip_event_t *ev){
1269         ms_message("in other_request");
1270         if (ev->request==NULL) return;
1271         if (strcmp(ev->request->sip_method,"MESSAGE")==0){
1272                 text_received(sal,ev);
1273                 eXosip_message_send_answer(ev->tid,200,NULL);
1274         }else if (strcmp(ev->request->sip_method,"OPTIONS")==0){
1275                 osip_message_t *options=NULL;
1276                 eXosip_options_build_answer(ev->tid,200,&options);
1277                 osip_message_set_allow(options,"INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, SUBSCRIBE, NOTIFY, INFO");
1278                 osip_message_set_accept(options,"application/sdp");
1279                 eXosip_options_send_answer(ev->tid,200,options);
1280         }else if (strcmp(ev->request->sip_method,"WAKEUP")==0
1281                 && comes_from_local_if(ev->request)) {
1282                 eXosip_message_send_answer(ev->tid,200,NULL);
1283                 ms_message("Receiving WAKEUP request !");
1284                 sal->callbacks.internal_message(sal,"WAKEUP");
1285         }else if (strncmp(ev->request->sip_method, "REFER", 5) == 0){
1286                 ms_message("Receiving REFER request !");
1287                 if (comes_from_local_if(ev->request)) {
1288                         osip_header_t *h=NULL;
1289                         osip_message_header_get_byname(ev->request,"Refer-To",0,&h);
1290                         eXosip_message_send_answer(ev->tid,200,NULL);
1291                         if (h){
1292                                 sal->callbacks.refer_received(sal,NULL,h->hvalue);
1293                         }
1294                 }else ms_warning("Ignored REFER not coming from this local loopback interface.");
1295         }else if (strncmp(ev->request->sip_method, "UPDATE", 6) == 0){
1296                 inc_update(sal,ev);
1297     }else {
1298                 char *tmp=NULL;
1299                 size_t msglen=0;
1300                 osip_message_to_str(ev->request,&tmp,&msglen);
1301                 if (tmp){
1302                         ms_message("Unsupported request received:\n%s",tmp);
1303                         osip_free(tmp);
1304                 }
1305                 /*answer with a 501 Not implemented*/
1306                 eXosip_message_send_answer(ev->tid,501,NULL);
1307         }
1308 }
1309
1310 static void masquerade_via(osip_message_t *msg, const char *ip, const char *port){
1311         osip_via_t *via=NULL;
1312         osip_message_get_via(msg,0,&via);
1313         if (via){
1314                 osip_free(via->port);
1315                 via->port=osip_strdup(port);
1316                 osip_free(via->host);
1317                 via->host=osip_strdup(ip);
1318         }
1319 }
1320
1321 static bool_t register_again_with_updated_contact(SalOp *op, osip_message_t *orig_request, osip_message_t *last_answer){
1322         osip_message_t *msg;
1323         const char *received;
1324         int rport;
1325         osip_contact_t *ctt=NULL;
1326         char *tmp;
1327         char port[20];
1328         SalAddress *addr;
1329
1330         if (extract_received_rport(last_answer,&received,&rport)==-1) return FALSE;
1331         osip_message_get_contact(orig_request,0,&ctt);
1332         if (strcmp(ctt->url->host,received)==0){
1333                 /*ip address matches, check ports*/
1334                 const char *contact_port=ctt->url->port;
1335                 if (contact_port==NULL || contact_port[0]=='\0')
1336                         contact_port="5060";
1337                 if (atoi(contact_port)==rport){
1338                         ms_message("Register has up to date contact, doing nothing.");
1339                         return FALSE;
1340                 }else ms_message("ports do not match, need to update the register (%s <> %i)", contact_port,rport);
1341         }
1342         eXosip_lock();
1343         msg=NULL;
1344         eXosip_register_build_register(op->rid,op->expires,&msg);
1345         if (msg==NULL){
1346                 eXosip_unlock();
1347                 ms_warning("Fail to create a contact updated register.");
1348                 return FALSE;
1349         }
1350         osip_message_get_contact(msg,0,&ctt);
1351         if (ctt->url->host!=NULL){
1352                 osip_free(ctt->url->host);
1353         }
1354         ctt->url->host=osip_strdup(received);
1355         if (ctt->url->port!=NULL){
1356                 osip_free(ctt->url->port);
1357         }
1358         snprintf(port,sizeof(port),"%i",rport);
1359         ctt->url->port=osip_strdup(port);
1360         if (op->masquerade_via) masquerade_via(msg,received,port);
1361         eXosip_register_send_register(op->rid,msg);
1362         eXosip_unlock();
1363         osip_contact_to_str(ctt,&tmp);
1364         addr=sal_address_new(tmp);
1365         osip_free(tmp);
1366         sal_address_clean(addr);
1367         tmp=sal_address_as_string(addr);
1368         sal_op_set_contact(op,tmp);
1369         sal_address_destroy(addr);
1370         ms_message("Resending new register with updated contact %s",tmp);
1371         ms_free(tmp);
1372         return TRUE;
1373 }
1374
1375 static void registration_success(Sal *sal, eXosip_event_t *ev){
1376         SalOp *op=sal_find_register(sal,ev->rid);
1377         osip_header_t *h=NULL;
1378         bool_t registered;
1379         if (op==NULL){
1380                 ms_error("Receiving register response for unknown operation");
1381                 return;
1382         }
1383         osip_message_get_expires(ev->request,0,&h);
1384         if (h!=NULL && atoi(h->hvalue)!=0){
1385                 registered=TRUE;
1386                 if (!register_again_with_updated_contact(op,ev->request,ev->response)){
1387                         sal->callbacks.register_success(op,registered);
1388                 }
1389         }else registered=FALSE;
1390 }
1391
1392 static bool_t registration_failure(Sal *sal, eXosip_event_t *ev){
1393         int status_code=0;
1394         const char *reason=NULL;
1395         SalOp *op=sal_find_register(sal,ev->rid);
1396         SalReason sr=SalReasonUnknown;
1397         SalError se=SalErrorUnknown;
1398
1399         if (op==NULL){
1400                 ms_error("Receiving register failure for unknown operation");
1401                 return TRUE;
1402         }
1403         if (ev->response){
1404                 status_code=osip_message_get_status_code(ev->response);
1405                 reason=osip_message_get_reason_phrase(ev->response);
1406         }else return TRUE;
1407         switch(status_code){
1408                 case 401:
1409                 case 407:
1410                         return process_authentication(sal,ev);
1411                         break;
1412                 case 606: /*Not acceptable, workaround for proxies that don't like private addresses
1413                                  in vias, such as ekiga.net
1414                                  On the opposite, freephonie.net bugs when via are masqueraded.
1415                                  */
1416                         op->masquerade_via=TRUE;
1417                 default:
1418                         /* if contact is up to date, process the failure, otherwise resend a new register with
1419                                 updated contact first, just in case the faillure is due to incorrect contact */
1420                         if (register_again_with_updated_contact(op,ev->request,ev->response))
1421                                 return TRUE; /*we are retrying with an updated contact*/
1422                         if (status_code==403){
1423                                 se=SalErrorFailure;
1424                                 sr=SalReasonForbidden;
1425                         }else if (status_code==0){
1426                                 se=SalErrorNoResponse;
1427                         }
1428                         sal->callbacks.register_failure(op,se,sr,reason);
1429         }
1430         return TRUE;
1431 }
1432
1433 static void other_request_reply(Sal *sal,eXosip_event_t *ev){
1434         SalOp *op=find_op(sal,ev);
1435
1436         if (op==NULL){
1437                 ms_warning("other_request_reply(): Receiving response to unknown request.");
1438                 return;
1439         }
1440         if (ev->response){
1441                 update_contact_from_response(op,ev->response);
1442                 sal->callbacks.ping_reply(op);
1443         }
1444 }
1445
1446 static bool_t process_event(Sal *sal, eXosip_event_t *ev){
1447         ms_message("linphone process event get a message %d\n",ev->type);
1448         switch(ev->type){
1449                 case EXOSIP_CALL_ANSWERED:
1450                         ms_message("CALL_ANSWERED\n");
1451                         call_accepted(sal,ev);
1452                         authentication_ok(sal,ev);
1453                         break;
1454                 case EXOSIP_CALL_CLOSED:
1455                 case EXOSIP_CALL_CANCELLED:
1456                         ms_message("CALL_CLOSED or CANCELLED\n");
1457                         call_terminated(sal,ev);
1458                         break;
1459                 case EXOSIP_CALL_TIMEOUT:
1460                 case EXOSIP_CALL_NOANSWER:
1461                         ms_message("CALL_TIMEOUT or NOANSWER\n");
1462                         return call_failure(sal,ev);
1463                         break;
1464                 case EXOSIP_CALL_REQUESTFAILURE:
1465                 case EXOSIP_CALL_GLOBALFAILURE:
1466                 case EXOSIP_CALL_SERVERFAILURE:
1467                         ms_message("CALL_REQUESTFAILURE or GLOBALFAILURE or SERVERFAILURE\n");
1468                         return call_failure(sal,ev);
1469                         break;
1470                 case EXOSIP_CALL_RELEASED:
1471                         ms_message("CALL_RELEASED\n");
1472                         call_released(sal, ev);
1473                         break;
1474                 case EXOSIP_CALL_INVITE:
1475                         ms_message("CALL_NEW\n");
1476                         inc_new_call(sal,ev);
1477                         break;
1478                 case EXOSIP_CALL_REINVITE:
1479                         handle_reinvite(sal,ev);
1480                         break;
1481                 case EXOSIP_CALL_ACK:
1482                         ms_message("CALL_ACK");
1483                         handle_ack(sal,ev);
1484                         break;
1485                 case EXOSIP_CALL_REDIRECTED:
1486                         ms_message("CALL_REDIRECTED");
1487                         eXosip_default_action(ev);
1488                         break;
1489                 case EXOSIP_CALL_PROCEEDING:
1490                         ms_message("CALL_PROCEEDING");
1491                         call_proceeding(sal,ev);
1492                         break;
1493                 case EXOSIP_CALL_RINGING:
1494                         ms_message("CALL_RINGING");
1495                         call_ringing(sal,ev);
1496                         break;
1497                 case EXOSIP_CALL_MESSAGE_NEW:
1498                         ms_message("EXOSIP_CALL_MESSAGE_NEW");
1499                         call_message_new(sal,ev);
1500                         break;
1501                 case EXOSIP_CALL_MESSAGE_REQUESTFAILURE:
1502                         if (ev->did<0 && ev->response &&
1503                                 (ev->response->status_code==407 || ev->response->status_code==401)){
1504                                  return process_authentication(sal,ev);
1505                         }
1506                         break;
1507                 case EXOSIP_IN_SUBSCRIPTION_NEW:
1508                         ms_message("CALL_IN_SUBSCRIPTION_NEW ");
1509                         sal_exosip_subscription_recv(sal,ev);
1510                         break;
1511                 case EXOSIP_IN_SUBSCRIPTION_RELEASED:
1512                         ms_message("CALL_SUBSCRIPTION_NEW ");
1513                         sal_exosip_in_subscription_closed(sal,ev);
1514                         break;
1515                 case EXOSIP_SUBSCRIPTION_UPDATE:
1516                         ms_message("CALL_SUBSCRIPTION_UPDATE");
1517                         break;
1518                 case EXOSIP_SUBSCRIPTION_NOTIFY:
1519                         ms_message("CALL_SUBSCRIPTION_NOTIFY");
1520                         sal_exosip_notify_recv(sal,ev);
1521                         break;
1522                 case EXOSIP_SUBSCRIPTION_ANSWERED:
1523                         ms_message("EXOSIP_SUBSCRIPTION_ANSWERED, ev->sid=%i, ev->did=%i\n",ev->sid,ev->did);
1524                         sal_exosip_subscription_answered(sal,ev);
1525                         break;
1526                 case EXOSIP_SUBSCRIPTION_CLOSED:
1527                         ms_message("EXOSIP_SUBSCRIPTION_CLOSED\n");
1528                         sal_exosip_subscription_closed(sal,ev);
1529                         break;
1530                 case EXOSIP_SUBSCRIPTION_REQUESTFAILURE:   /**< announce a request failure      */
1531                         if (ev->response && (ev->response->status_code == 407 || ev->response->status_code == 401)){
1532                                 return process_authentication(sal,ev);
1533                         }
1534         case EXOSIP_SUBSCRIPTION_SERVERFAILURE:
1535                 case EXOSIP_SUBSCRIPTION_GLOBALFAILURE:
1536                         sal_exosip_subscription_closed(sal,ev);
1537                         break;
1538                 case EXOSIP_REGISTRATION_FAILURE:
1539                         ms_message("REGISTRATION_FAILURE\n");
1540                         return registration_failure(sal,ev);
1541                         break;
1542                 case EXOSIP_REGISTRATION_SUCCESS:
1543                         authentication_ok(sal,ev);
1544                         registration_success(sal,ev);
1545                         break;
1546                 case EXOSIP_MESSAGE_NEW:
1547                         other_request(sal,ev);
1548                         break;
1549                 case EXOSIP_MESSAGE_PROCEEDING:
1550                 case EXOSIP_MESSAGE_ANSWERED:
1551                 case EXOSIP_MESSAGE_REDIRECTED:
1552                 case EXOSIP_MESSAGE_SERVERFAILURE:
1553                 case EXOSIP_MESSAGE_GLOBALFAILURE:
1554                         other_request_reply(sal,ev);
1555                         break;
1556                 case EXOSIP_MESSAGE_REQUESTFAILURE:
1557                         if (ev->response && (ev->response->status_code == 407 || ev->response->status_code == 401)){
1558                                 return process_authentication(sal,ev);
1559                         }
1560                         break;
1561                 default:
1562                         ms_message("Unhandled exosip event ! %i",ev->type);
1563                         break;
1564         }
1565         return TRUE;
1566 }
1567
1568 int sal_iterate(Sal *sal){
1569         eXosip_event_t *ev;
1570         while((ev=eXosip_event_wait(0,0))!=NULL){
1571                 if (process_event(sal,ev))
1572                         eXosip_event_free(ev);
1573         }
1574         eXosip_lock();
1575         eXosip_automatic_refresh();
1576         eXosip_unlock();
1577         return 0;
1578 }
1579
1580 int sal_register(SalOp *h, const char *proxy, const char *from, int expires){
1581         osip_message_t *msg;
1582         sal_op_set_route(h,proxy);
1583         if (h->rid==-1){
1584                 eXosip_lock();
1585                 h->rid=eXosip_register_build_initial_register(from,proxy,sal_op_get_contact(h),expires,&msg);
1586                 sal_add_register(h->base.root,h);
1587         }else{
1588                 eXosip_lock();
1589                 eXosip_register_build_register(h->rid,expires,&msg);
1590         }
1591         eXosip_register_send_register(h->rid,msg);
1592         eXosip_unlock();
1593         h->expires=expires;
1594         return 0;
1595 }
1596
1597 int sal_unregister(SalOp *h){
1598         osip_message_t *msg=NULL;
1599         eXosip_lock();
1600         eXosip_register_build_register(h->rid,0,&msg);
1601         if (msg) eXosip_register_send_register(h->rid,msg);
1602         else ms_warning("Could not build unREGISTER !");
1603         eXosip_unlock();
1604         return 0;
1605 }
1606
1607
1608
1609 SalAddress * sal_address_new(const char *uri){
1610         osip_from_t *from;
1611         osip_from_init(&from);
1612         if (osip_from_parse(from,uri)!=0){
1613                 osip_from_free(from);
1614                 return NULL;
1615         }
1616         return (SalAddress*)from;
1617 }
1618
1619 SalAddress * sal_address_clone(const SalAddress *addr){
1620         osip_from_t *ret=NULL;
1621         osip_from_clone((osip_from_t*)addr,&ret);
1622         return (SalAddress*)ret;
1623 }
1624
1625 #define null_if_empty(s) (((s)!=NULL && (s)[0]!='\0') ? (s) : NULL )
1626
1627 const char *sal_address_get_scheme(const SalAddress *addr){
1628         const osip_from_t *u=(const osip_from_t*)addr;
1629         return null_if_empty(u->url->scheme);
1630 }
1631
1632 const char *sal_address_get_display_name(const SalAddress* addr){
1633         const osip_from_t *u=(const osip_from_t*)addr;
1634         return null_if_empty(u->displayname);
1635 }
1636
1637 const char *sal_address_get_username(const SalAddress *addr){
1638         const osip_from_t *u=(const osip_from_t*)addr;
1639         return null_if_empty(u->url->username);
1640 }
1641
1642 const char *sal_address_get_domain(const SalAddress *addr){
1643         const osip_from_t *u=(const osip_from_t*)addr;
1644         return null_if_empty(u->url->host);
1645 }
1646
1647 void sal_address_set_display_name(SalAddress *addr, const char *display_name){
1648         osip_from_t *u=(osip_from_t*)addr;
1649         if (u->displayname!=NULL){
1650                 osip_free(u->displayname);
1651                 u->displayname=NULL;
1652         }
1653         if (display_name!=NULL)
1654                 u->displayname=osip_strdup(display_name);
1655 }
1656
1657 void sal_address_set_username(SalAddress *addr, const char *username){
1658         osip_from_t *uri=(osip_from_t*)addr;
1659         if (uri->url->username!=NULL){
1660                 osip_free(uri->url->username);
1661                 uri->url->username=NULL;
1662         }
1663         if (username)
1664                 uri->url->username=osip_strdup(username);
1665 }
1666
1667 void sal_address_set_domain(SalAddress *addr, const char *host){
1668         osip_from_t *uri=(osip_from_t*)addr;
1669         if (uri->url->host!=NULL){
1670                 osip_free(uri->url->host);
1671                 uri->url->host=NULL;
1672         }
1673         if (host)
1674                 uri->url->host=osip_strdup(host);
1675 }
1676
1677 void sal_address_set_port(SalAddress *addr, const char *port){
1678         osip_from_t *uri=(osip_from_t*)addr;
1679         if (uri->url->port!=NULL){
1680                 osip_free(uri->url->port);
1681                 uri->url->port=NULL;
1682         }
1683         if (port)
1684                 uri->url->port=osip_strdup(port);
1685 }
1686
1687 void sal_address_set_port_int(SalAddress *uri, int port){
1688         char tmp[12];
1689         if (port==5060){
1690                 /*this is the default, special case to leave the port field blank*/
1691                 sal_address_set_port(uri,NULL);
1692                 return;
1693         }
1694         snprintf(tmp,sizeof(tmp),"%i",port);
1695         sal_address_set_port(uri,tmp);
1696 }
1697
1698 void sal_address_clean(SalAddress *addr){
1699         osip_generic_param_freelist(& ((osip_from_t*)addr)->gen_params);
1700         osip_uri_param_freelist(& ((osip_from_t*)addr)->url->url_params);
1701 }
1702
1703 char *sal_address_as_string(const SalAddress *u){
1704         char *tmp,*ret;
1705         osip_from_to_str((osip_from_t*)u,&tmp);
1706         ret=ms_strdup(tmp);
1707         osip_free(tmp);
1708         return ret;
1709 }
1710
1711 char *sal_address_as_string_uri_only(const SalAddress *u){
1712         char *tmp=NULL,*ret;
1713         osip_uri_to_str(((osip_from_t*)u)->url,&tmp);
1714         ret=ms_strdup(tmp);
1715         osip_free(tmp);
1716         return ret;
1717 }
1718
1719 void sal_address_destroy(SalAddress *u){
1720         osip_from_free((osip_from_t*)u);
1721 }
1722