4 Copyright (C) 2000 Simon MORLAT (simon.morlat@linphone.org)
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License
8 as published by the Free Software Foundation; either version 2
9 of the License, or (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
23 #include "mediastreamer2/mediastream.h"
26 #ifdef HAVE_SIGHANDLER_T
28 #endif /*HAVE_SIGHANDLER_T*/
31 #if !defined(_WIN32_WCE)
33 #include <sys/types.h>
40 #include <ortp/stun.h>
42 #ifdef HAVE_GETIFADDRS
50 static char lock_name[80];
51 static char lock_set=0;
52 /* put a lock file in /tmp. this is called when linphone runs as a daemon*/
57 snprintf(lock_name,80,"/tmp/linphone.%i",getuid());
58 lockfile=fopen(lock_name,"w");
61 printf("Failed to create lock file.\n");
64 fprintf(lockfile,"%i",getpid());
70 /* looks if there is a lock file. If presents return its content (the pid of the already running linphone), if not found, returns -1*/
76 snprintf(lock_name,80,"/tmp/linphone.%i",getuid());
77 lockfile=fopen(lock_name,"r");
80 if (fscanf(lockfile,"%i",&pid)!=1){
81 ms_warning("Could not read pid in lock file.");
89 /* remove the lock file if it was set*/
90 int remove_lock_file()
95 err=unlink(lock_name);
103 char *int2str(int number)
105 char *numstr=ms_malloc(10);
106 snprintf(numstr,10,"%i",number);
110 void check_sound_device(LinphoneCore *lc)
117 char *i810_audio=NULL;
118 char *snd_pcm_oss=NULL;
119 char *snd_mixer_oss=NULL;
121 fd=open("/proc/modules",O_RDONLY);
124 /* read the entire /proc/modules file and check if sound conf seems correct */
125 /*a=fstat(fd,&statbuf);
126 if (a<0) ms_warning("Can't stat /proc/modules:%s.",strerror(errno));
128 if (len==0) ms_warning("/proc/modules has zero size!");
130 /***** fstat does not work on /proc/modules for unknown reason *****/
132 file=ms_malloc(len+1);
134 if (a<len) file=ms_realloc(file,a+1);
136 i810_audio=strstr(file,"i810_audio");
137 if (i810_audio!=NULL){
138 /* I'm sorry i put this warning in comments because
139 * i don't use yet the right driver !! */
140 /* lc->vtable.display_warning(lc,_("You are currently using the i810_audio driver.\nThis driver is buggy and so does not work with Linphone.\nWe suggest that you replace it by its equivalent ALSA driver,\neither with packages from your distribution, or by downloading\nALSA drivers at http://www.alsa-project.org."));*/
143 snd_pcm=strstr(file,"snd-pcm");
145 snd_pcm_oss=strstr(file,"snd-pcm-oss");
146 snd_mixer_oss=strstr(file,"snd-mixer-oss");
147 if (snd_pcm_oss==NULL){
148 lc->vtable.display_warning(lc,_("Your computer appears to be using ALSA sound drivers.\nThis is the best choice. However the pcm oss emulation module\nis missing and linphone needs it. Please execute\n'modprobe snd-pcm-oss' as root to load it."));
150 if (snd_mixer_oss==NULL){
151 lc->vtable.display_warning(lc,_("Your computer appears to be using ALSA sound drivers.\nThis is the best choice. However the mixer oss emulation module\nis missing and linphone needs it. Please execute\n 'modprobe snd-mixer-oss' as root to load it."));
156 ms_warning("Could not open /proc/modules.");
158 /* now check general volume. Some user forget to rise it and then complain that linphone is
160 /* but some other users complain that linphone should not change levels...
161 if (lc->sound_conf.sndcard!=NULL){
162 a=snd_card_get_level(lc->sound_conf.sndcard,SND_CARD_LEVEL_GENERAL);
164 ms_warning("General level is quite low (%i). Linphone rises it up for you.",a);
165 snd_card_set_level(lc->sound_conf.sndcard,SND_CARD_LEVEL_GENERAL,80);
170 if (file!=NULL) ms_free(file);
176 #define RTP_HDR_SZ 12
177 #define IP4_HDR_SZ 20 /*20 is the minimum, but there may be some options*/
179 static void payload_type_set_enable(PayloadType *pt,int value)
181 if ((value)!=0) payload_type_set_flag(pt,PAYLOAD_TYPE_ENABLED); \
182 else payload_type_unset_flag(pt,PAYLOAD_TYPE_ENABLED);
185 static bool_t payload_type_enabled(const PayloadType *pt) {
186 return (((pt)->flags & PAYLOAD_TYPE_ENABLED)!=0);
189 bool_t linphone_core_payload_type_enabled(LinphoneCore *lc, const PayloadType *pt){
190 if (ms_list_find(lc->codecs_conf.audio_codecs, (PayloadType*) pt) || ms_list_find(lc->codecs_conf.video_codecs, (PayloadType*)pt)){
191 return payload_type_enabled(pt);
193 ms_error("Getting enablement status of codec not in audio or video list of PayloadType !");
197 int linphone_core_enable_payload_type(LinphoneCore *lc, PayloadType *pt, bool_t enabled){
198 if (ms_list_find(lc->codecs_conf.audio_codecs,pt) || ms_list_find(lc->codecs_conf.video_codecs,pt)){
199 payload_type_set_enable(pt,enabled);
200 _linphone_core_codec_config_write(lc);
203 ms_error("Enabling codec not in audio or video list of PayloadType !");
207 int linphone_core_get_payload_type_number(LinphoneCore *lc, const PayloadType *pt){
208 return payload_type_get_number(pt);
211 const char *linphone_core_get_payload_type_description(LinphoneCore *lc, PayloadType *pt){
212 if (ms_filter_codec_supported(pt->mime_type)){
213 MSFilterDesc *desc=ms_filter_get_encoder(pt->mime_type);
215 return dgettext("mediastreamer",desc->text);
224 /*this function makes a special case for speex/8000.
225 This codec is variable bitrate. The 8kbit/s mode is interesting when having a low upload bandwidth, but its quality
226 is not very good. We 'd better use its 15kbt/s mode when we have enough bandwidth*/
227 static int get_codec_bitrate(LinphoneCore *lc, const PayloadType *pt){
228 int upload_bw=linphone_core_get_upload_bandwidth(lc);
229 if (bandwidth_is_greater(upload_bw,129) || (bandwidth_is_greater(upload_bw,33) && !linphone_core_video_enabled(lc)) ) {
230 if (strcmp(pt->mime_type,"speex")==0 && pt->clock_rate==8000){
234 return pt->normal_bitrate;
237 static double get_audio_payload_bandwidth(LinphoneCore *lc, const PayloadType *pt){
241 bitrate=get_codec_bitrate(lc,pt);
242 packet_size= (((double)bitrate)/(50*8))+UDP_HDR_SZ+RTP_HDR_SZ+IP4_HDR_SZ;
243 return packet_size*8.0*npacket;
246 void linphone_core_update_allocated_audio_bandwidth_in_call(LinphoneCall *call, const PayloadType *pt){
247 call->audio_bw=(int)(get_audio_payload_bandwidth(call->core,pt)/1000.0);
248 ms_message("Audio bandwidth for this call is %i",call->audio_bw);
251 void linphone_core_update_allocated_audio_bandwidth(LinphoneCore *lc){
253 PayloadType *max=NULL;
254 for(elem=linphone_core_get_audio_codecs(lc);elem!=NULL;elem=elem->next){
255 PayloadType *pt=(PayloadType*)elem->data;
256 if (payload_type_enabled(pt)){
257 int pt_bitrate=get_codec_bitrate(lc,pt);
258 if (max==NULL) max=pt;
259 else if (max->normal_bitrate<pt_bitrate){
265 lc->audio_bw=(int)(get_audio_payload_bandwidth(lc,max)/1000.0);
269 bool_t linphone_core_is_payload_type_usable_for_bandwidth(LinphoneCore *lc, PayloadType *pt, int bandwidth_limit)
275 case PAYLOAD_AUDIO_CONTINUOUS:
276 case PAYLOAD_AUDIO_PACKETIZED:
277 codec_band=get_audio_payload_bandwidth(lc,pt);
278 ret=bandwidth_is_greater(bandwidth_limit*1000,codec_band);
279 /*hack to avoid using uwb codecs when having low bitrate and video*/
280 if (bandwidth_is_greater(199,bandwidth_limit)){
281 if (linphone_core_video_enabled(lc) && pt->clock_rate>16000){
285 //ms_message("Payload %s: %g",pt->mime_type,codec_band);
288 if (bandwidth_limit!=0) {/* infinite (-1) or strictly positive*/
297 /* return TRUE if codec can be used with bandwidth, FALSE else*/
298 bool_t linphone_core_check_payload_type_usability(LinphoneCore *lc, PayloadType *pt)
301 int allowed_bw,video_bw;
304 linphone_core_update_allocated_audio_bandwidth(lc);
305 allowed_bw=get_min_bandwidth(linphone_core_get_download_bandwidth(lc),
306 linphone_core_get_upload_bandwidth(lc));
309 video_bw=1500; /*around 1.5 Mbit/s*/
311 video_bw=get_video_bandwidth(allowed_bw,lc->audio_bw);
314 case PAYLOAD_AUDIO_CONTINUOUS:
315 case PAYLOAD_AUDIO_PACKETIZED:
316 codec_band=get_audio_payload_bandwidth(lc,pt);
317 ret=bandwidth_is_greater(allowed_bw*1000,codec_band);
318 /*hack to avoid using uwb codecs when having low bitrate and video*/
319 if (bandwidth_is_greater(199,allowed_bw)){
320 if (linphone_core_video_enabled(lc) && pt->clock_rate>16000){
324 //ms_message("Payload %s: %g",pt->mime_type,codec_band);
328 pt->normal_bitrate=video_bw*1000;
337 bool_t lp_spawn_command_line_sync(const char *command, char **result,int *command_ret){
338 #if !defined(_WIN32_WCE)
339 FILE *f=popen(command,"r");
342 *result=ms_malloc(4096);
343 err=fread(*result,1,4096-1,f);
345 ms_warning("Error reading command output:%s",strerror(errno));
351 if (command_ret!=NULL) *command_ret=err;
354 #endif /*_WIN32_WCE*/
358 static ortp_socket_t create_socket(int local_port){
359 struct sockaddr_in laddr;
362 sock=socket(PF_INET,SOCK_DGRAM,IPPROTO_UDP);
364 ms_error("Fail to create socket");
367 memset (&laddr,0,sizeof(laddr));
368 laddr.sin_family=AF_INET;
369 laddr.sin_addr.s_addr=INADDR_ANY;
370 laddr.sin_port=htons(local_port);
371 if (bind(sock,(struct sockaddr*)&laddr,sizeof(laddr))<0){
372 ms_error("Bind socket to 0.0.0.0:%i failed: %s",local_port,getSocketError());
377 if (setsockopt (sock, SOL_SOCKET, SO_REUSEADDR,
378 (SOCKET_OPTION_VALUE)&optval, sizeof (optval))<0){
379 ms_warning("Fail to set SO_REUSEADDR");
381 set_non_blocking_socket(sock);
385 static int sendStunRequest(int sock, const struct sockaddr *server, socklen_t addrlen, int id, bool_t changeAddr){
386 char buf[STUN_MAX_MESSAGE_SIZE];
387 int len = STUN_MAX_MESSAGE_SIZE;
388 StunAtrString username;
389 StunAtrString password;
392 memset(&req, 0, sizeof(StunMessage));
393 memset(&username,0,sizeof(username));
394 memset(&password,0,sizeof(password));
395 stunBuildReqSimple( &req, &username, changeAddr , changeAddr , id);
396 len = stunEncodeMessage( &req, buf, len, &password);
398 ms_error("Fail to encode stun message.");
401 err=sendto(sock,buf,len,0,server,addrlen);
403 ms_error("sendto failed: %s",strerror(errno));
409 int parse_hostname_to_addr(const char *server, struct sockaddr_storage *ss, socklen_t *socklen){
410 struct addrinfo hints,*res=NULL;
413 char host[NI_MAXHOST];
415 host[NI_MAXHOST-1]='\0';
416 strncpy(host,server,sizeof(host)-1);
422 memset(&hints,0,sizeof(hints));
423 hints.ai_family=PF_INET;
424 hints.ai_socktype=SOCK_DGRAM;
425 hints.ai_protocol=IPPROTO_UDP;
426 ret=getaddrinfo(host,port,&hints,&res);
428 ms_error("getaddrinfo() failed for %s:%s : %s",host,port,gai_strerror(ret));
432 memcpy(ss,res->ai_addr,res->ai_addrlen);
433 *socklen=res->ai_addrlen;
438 static int recvStunResponse(ortp_socket_t sock, char *ipaddr, int *port, int *id){
439 char buf[STUN_MAX_MESSAGE_SIZE];
440 int len = STUN_MAX_MESSAGE_SIZE;
442 len=recv(sock,buf,len,0);
445 stunParseMessage(buf,len, &resp );
446 *id=resp.msgHdr.tr_id.octet[0];
447 if (resp.hasXorMappedAddress){
448 *port = resp.xorMappedAddress.ipv4.port;
449 ia.s_addr=htonl(resp.xorMappedAddress.ipv4.addr);
450 }else if (resp.hasMappedAddress){
451 *port = resp.mappedAddress.ipv4.port;
452 ia.s_addr=htonl(resp.mappedAddress.ipv4.addr);
454 strncpy(ipaddr,inet_ntoa(ia),LINPHONE_IPADDR_SIZE);
459 void linphone_core_run_stun_tests(LinphoneCore *lc, LinphoneCall *call){
460 const char *server=linphone_core_get_stun_server(lc);
462 if (lc->sip_conf.ipv6_enabled){
463 ms_warning("stun support is not implemented for ipv6");
467 struct sockaddr_storage ss;
469 ortp_socket_t sock1=-1, sock2=-1;
471 bool_t video_enabled=linphone_core_video_enabled(lc);
472 bool_t got_audio,got_video;
473 bool_t cone_audio=FALSE,cone_video=FALSE;
474 struct timeval init,cur;
475 SalEndpointCandidate *ac,*vc;
477 ac=&call->localdesc->streams[0].candidates[0];
478 vc=&call->localdesc->streams[1].candidates[0];
480 if (parse_hostname_to_addr(server,&ss,&ss_len)<0){
481 ms_error("Fail to parser stun server address: %s",server);
484 if (lc->vtable.display_status!=NULL)
485 lc->vtable.display_status(lc,_("Stun lookup in progress..."));
487 /*create the two audio and video RTP sockets, and send STUN message to our stun server */
488 sock1=create_socket(call->audio_port);
489 if (sock1==-1) return;
491 sock2=create_socket(call->video_port);
492 if (sock2==-1) return ;
496 gettimeofday(&init,NULL);
501 ms_message("Sending stun requests...");
502 sendStunRequest(sock1,(struct sockaddr*)&ss,ss_len,11,TRUE);
503 sendStunRequest(sock1,(struct sockaddr*)&ss,ss_len,1,FALSE);
505 sendStunRequest(sock2,(struct sockaddr*)&ss,ss_len,22,TRUE);
506 sendStunRequest(sock2,(struct sockaddr*)&ss,ss_len,2,FALSE);
515 if (recvStunResponse(sock1,ac->addr,
517 ms_message("STUN test result: local audio port maps to %s:%i",
524 if (recvStunResponse(sock2,vc->addr,
526 ms_message("STUN test result: local video port maps to %s:%i",
533 gettimeofday(&cur,NULL);
534 elapsed=((cur.tv_sec-init.tv_sec)*1000.0) + ((cur.tv_usec-init.tv_usec)/1000.0);
536 ms_message("Stun responses timeout, going ahead.");
540 }while(!(got_audio && (got_video||sock2==-1) ) );
542 ms_error("No stun server response for audio port.");
545 ms_message("NAT is symmetric for audio port");
550 ms_error("No stun server response for video port.");
553 ms_message("NAT is symmetric for video port.");
557 if ((ac->addr[0]!='\0' && vc->addr[0]!='\0' && strcmp(ac->addr,vc->addr)==0)
559 strcpy(call->localdesc->addr,ac->addr);
562 if (sock2!=-1) close_socket(sock2);
566 int linphone_core_gather_ice_candidates(LinphoneCore *lc, LinphoneCall *call)
569 struct sockaddr_storage ss;
571 IceCheckList *audio_check_list;
572 IceCheckList *video_check_list;
573 const char *server = linphone_core_get_stun_server(lc);
575 if ((server == NULL) || (call->ice_session == NULL)) return -1;
576 audio_check_list = ice_session_check_list(call->ice_session, 0);
577 video_check_list = ice_session_check_list(call->ice_session, 1);
578 if (audio_check_list == NULL) return -1;
580 if (lc->sip_conf.ipv6_enabled){
581 ms_warning("stun support is not implemented for ipv6");
585 if (parse_hostname_to_addr(server, &ss, &ss_len) < 0) {
586 ms_error("Fail to parser stun server address: %s", server);
589 if (lc->vtable.display_status != NULL)
590 lc->vtable.display_status(lc, _("ICE local candidates gathering in progress..."));
592 /* Gather local host candidates. */
593 if (linphone_core_get_local_ip_for(AF_INET, NULL, local_addr) < 0) {
594 ms_error("Fail to get local ip");
597 ice_add_local_candidate(audio_check_list, "host", local_addr, call->audio_port, 1, NULL);
598 ice_add_local_candidate(audio_check_list, "host", local_addr, call->audio_port + 1, 2, NULL);
599 if (call->params.has_video && (video_check_list != NULL)) {
600 ice_add_local_candidate(video_check_list, "host", local_addr, call->video_port, 1, NULL);
601 ice_add_local_candidate(video_check_list, "host", local_addr, call->video_port + 1, 2, NULL);
604 /* Gather local srflx candidates. */
605 ice_session_gather_candidates(call->ice_session, ss, ss_len);
609 void linphone_core_update_local_media_description_from_ice(SalMediaDescription *desc, IceSession *session)
611 const char *rtp_addr, *rtcp_addr;
612 IceSessionState session_state = ice_session_state(session);
617 if (session_state == IS_Completed) {
618 desc->ice_completed = TRUE;
619 ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, 0), &rtp_addr, NULL, NULL, NULL);
620 strncpy(desc->addr, rtp_addr, sizeof(desc->addr));
623 desc->ice_completed = FALSE;
625 strncpy(desc->ice_pwd, ice_session_local_pwd(session), sizeof(desc->ice_pwd));
626 strncpy(desc->ice_ufrag, ice_session_local_ufrag(session), sizeof(desc->ice_ufrag));
627 for (i = 0; i < desc->nstreams; i++) {
628 SalStreamDescription *stream = &desc->streams[i];
629 IceCheckList *cl = ice_session_check_list(session, i);
631 if (cl == NULL) continue;
632 if (ice_check_list_state(cl) == ICL_Completed) {
633 stream->ice_completed = TRUE;
634 result = ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
636 stream->ice_completed = FALSE;
637 result = ice_check_list_default_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
639 if (result == TRUE) {
640 strncpy(stream->rtp_addr, rtp_addr, sizeof(stream->rtp_addr));
641 strncpy(stream->rtcp_addr, rtcp_addr, sizeof(stream->rtcp_addr));
643 memset(stream->rtp_addr, 0, sizeof(stream->rtp_addr));
644 memset(stream->rtcp_addr, 0, sizeof(stream->rtcp_addr));
646 if ((strlen(ice_check_list_local_pwd(cl)) != strlen(desc->ice_pwd)) || (strcmp(ice_check_list_local_pwd(cl), desc->ice_pwd)))
647 strncpy(stream->ice_pwd, ice_check_list_local_pwd(cl), sizeof(stream->ice_pwd));
649 memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
650 if ((strlen(ice_check_list_local_ufrag(cl)) != strlen(desc->ice_ufrag)) || (strcmp(ice_check_list_local_ufrag(cl), desc->ice_ufrag)))
651 strncpy(stream->ice_ufrag, ice_check_list_local_ufrag(cl), sizeof(stream->ice_ufrag));
653 memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
654 stream->ice_mismatch = ice_check_list_is_mismatch(cl);
655 if ((ice_check_list_state(cl) == ICL_Running) || (ice_check_list_state(cl) == ICL_Completed)) {
656 memset(stream->ice_candidates, 0, sizeof(stream->ice_candidates));
657 for (j = 0; j < MIN(ms_list_size(cl->local_candidates), SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES); j++) {
658 SalIceCandidate *sal_candidate = &stream->ice_candidates[nb_candidates];
659 IceCandidate *ice_candidate = ms_list_nth_data(cl->local_candidates, j);
660 const char *default_addr = NULL;
661 int default_port = 0;
662 if (ice_candidate->componentID == 1) {
663 default_addr = stream->rtp_addr;
664 default_port = stream->rtp_port;
665 } else if (ice_candidate->componentID == 2) {
666 default_addr = stream->rtcp_addr;
667 default_port = stream->rtcp_port;
669 if (default_addr[0] == '\0') default_addr = desc->addr;
670 /* Only include the candidates matching the default destination for each component of the stream if the state is Completed as specified in RFC5245 section 9.1.2.2. */
671 if ((ice_check_list_state(cl) == ICL_Completed)
672 && !((ice_candidate->taddr.port == default_port) && (strlen(ice_candidate->taddr.ip) == strlen(default_addr)) && (strcmp(ice_candidate->taddr.ip, default_addr) == 0)))
674 strncpy(sal_candidate->foundation, ice_candidate->foundation, sizeof(sal_candidate->foundation));
675 sal_candidate->componentID = ice_candidate->componentID;
676 sal_candidate->priority = ice_candidate->priority;
677 strncpy(sal_candidate->type, ice_candidate_type(ice_candidate), sizeof(sal_candidate->type));
678 strncpy(sal_candidate->addr, ice_candidate->taddr.ip, sizeof(sal_candidate->addr));
679 sal_candidate->port = ice_candidate->taddr.port;
680 if ((ice_candidate->base != NULL) && (ice_candidate->base != ice_candidate)) {
681 strncpy(sal_candidate->raddr, ice_candidate->base->taddr.ip, sizeof(sal_candidate->raddr));
682 sal_candidate->rport = ice_candidate->base->taddr.port;
687 if ((ice_check_list_state(cl) == ICL_Completed) && (ice_session_role(session) == IR_Controlling)) {
688 int rtp_port, rtcp_port;
689 memset(stream->ice_remote_candidates, 0, sizeof(stream->ice_remote_candidates));
690 ice_check_list_selected_valid_remote_candidate(cl, &rtp_addr, &rtp_port, &rtcp_addr, &rtcp_port);
691 strncpy(stream->ice_remote_candidates[0].addr, rtp_addr, sizeof(stream->ice_remote_candidates[0].addr));
692 stream->ice_remote_candidates[0].port = rtp_port;
693 strncpy(stream->ice_remote_candidates[1].addr, rtcp_addr, sizeof(stream->ice_remote_candidates[1].addr));
694 stream->ice_remote_candidates[1].port = rtcp_port;
699 static void get_default_addr_and_port(uint16_t componentID, const SalMediaDescription *md, const SalStreamDescription *stream, const char **addr, int *port)
701 if (componentID == 1) {
702 *addr = stream->rtp_addr;
703 *port = stream->rtp_port;
704 } else if (componentID == 2) {
705 *addr = stream->rtcp_addr;
706 *port = stream->rtcp_port;
708 if ((*addr)[0] == '\0') *addr = md->addr;
711 void linphone_core_update_ice_from_remote_media_description(LinphoneCall *call, const SalMediaDescription *md)
713 bool_t ice_restarted = FALSE;
715 if ((md->ice_pwd[0] != '\0') && (md->ice_ufrag[0] != '\0')) {
718 /* Check for ICE restart and set remote credentials. */
719 if ((strcmp(md->addr, "0.0.0.0") == 0) || (strcmp(md->addr, "::0") == 0)) {
720 ice_session_restart(call->ice_session);
721 ice_restarted = TRUE;
723 for (i = 0; i < md->nstreams; i++) {
724 const SalStreamDescription *stream = &md->streams[i];
725 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
726 if (cl && (strcmp(stream->rtp_addr, "0.0.0.0") == 0)) {
727 ice_session_restart(call->ice_session);
728 ice_restarted = TRUE;
733 if ((ice_session_remote_ufrag(call->ice_session) == NULL) && (ice_session_remote_pwd(call->ice_session) == NULL)) {
734 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
735 } else if (ice_session_remote_credentials_changed(call->ice_session, md->ice_ufrag, md->ice_pwd)) {
736 if (ice_restarted == FALSE) {
737 ice_session_restart(call->ice_session);
738 ice_restarted = TRUE;
740 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
742 for (i = 0; i < md->nstreams; i++) {
743 const SalStreamDescription *stream = &md->streams[i];
744 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
745 if (cl && (stream->ice_pwd[0] != '\0') && (stream->ice_ufrag[0] != '\0')) {
746 if (ice_check_list_remote_credentials_changed(cl, stream->ice_ufrag, stream->ice_pwd)) {
747 if (ice_restarted == FALSE) {
748 ice_session_restart(call->ice_session);
749 ice_restarted = TRUE;
751 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
757 /* Create ICE check lists if needed and parse ICE attributes. */
758 for (i = 0; i < md->nstreams; i++) {
759 const SalStreamDescription *stream = &md->streams[i];
760 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
762 cl = ice_check_list_new();
763 ice_session_add_check_list(call->ice_session, cl);
764 switch (stream->type) {
766 if (call->audiostream != NULL) call->audiostream->ice_check_list = cl;
769 if (call->videostream != NULL) call->videostream->ice_check_list = cl;
775 if ((stream->ice_mismatch == TRUE) || (stream->rtp_port == 0)) {
776 ice_check_list_set_state(cl, ICL_Failed);
778 if ((stream->ice_pwd[0] != '\0') && (stream->ice_ufrag[0] != '\0'))
779 ice_check_list_set_remote_credentials(cl, stream->ice_ufrag, stream->ice_pwd);
780 for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES; j++) {
781 const SalIceCandidate *candidate = &stream->ice_candidates[j];
782 bool_t default_candidate = FALSE;
783 const char *addr = NULL;
785 if (candidate->addr[0] == '\0') break;
786 if ((candidate->componentID == 0) || (candidate->componentID > 2)) continue;
787 get_default_addr_and_port(candidate->componentID, md, stream, &addr, &port);
788 if (addr && (candidate->port == port) && (strlen(candidate->addr) == strlen(addr)) && (strcmp(candidate->addr, addr) == 0))
789 default_candidate = TRUE;
790 ice_add_remote_candidate(cl, candidate->type, candidate->addr, candidate->port, candidate->componentID,
791 candidate->priority, candidate->foundation, default_candidate);
793 if (ice_restarted == FALSE) {
794 bool_t losing_pairs_added = FALSE;
795 for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES; j++) {
796 const SalIceRemoteCandidate *candidate = &stream->ice_remote_candidates[j];
797 const char *addr = NULL;
799 int componentID = j + 1;
800 if (candidate->addr[0] == '\0') break;
801 get_default_addr_and_port(componentID, md, stream, &addr, &port);
802 ice_add_losing_pair(cl, j + 1, candidate->addr, candidate->port, addr, port);
803 losing_pairs_added = TRUE;
805 if (losing_pairs_added == TRUE) ice_check_list_check_completed(cl);
809 for (i = ice_session_nb_check_lists(call->ice_session); i > md->nstreams; i--) {
810 ice_session_remove_check_list(call->ice_session, ice_session_check_list(call->ice_session, i - 1));
812 ice_session_check_mismatch(call->ice_session);
814 if (ice_session_nb_check_lists(call->ice_session) == 0) {
815 linphone_call_delete_ice_session(call);
819 void linphone_core_deactivate_ice_for_deactivated_media_streams(LinphoneCall *call, const SalMediaDescription *md)
822 for (i = 0; i < md->nstreams; i++) {
823 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
824 if (cl && (md->streams[i].rtp_port == 0)) {
825 if (ice_check_list_state(cl) != ICL_Completed) ice_check_list_set_state(cl, ICL_Failed);
830 LinphoneCall * is_a_linphone_call(void *user_pointer){
831 LinphoneCall *call=(LinphoneCall*)user_pointer;
832 if (call==NULL) return NULL;
833 return call->magic==linphone_call_magic ? call : NULL;
836 LinphoneProxyConfig * is_a_linphone_proxy_config(void *user_pointer){
837 LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)user_pointer;
838 if (cfg==NULL) return NULL;
839 return cfg->magic==linphone_proxy_config_magic ? cfg : NULL;
842 unsigned int linphone_core_get_audio_features(LinphoneCore *lc){
844 const char *features=lp_config_get_string(lc->config,"sound","features",NULL);
849 strncpy(tmp,features,sizeof(tmp)-1);
850 for(p=tmp;*p!='\0';p++){
851 if (*p==' ') continue;
855 ms_message("Found audio feature %s",name);
856 if (strcasecmp(name,"PLC")==0) ret|=AUDIO_STREAM_FEATURE_PLC;
857 else if (strcasecmp(name,"EC")==0) ret|=AUDIO_STREAM_FEATURE_EC;
858 else if (strcasecmp(name,"EQUALIZER")==0) ret|=AUDIO_STREAM_FEATURE_EQUALIZER;
859 else if (strcasecmp(name,"VOL_SND")==0) ret|=AUDIO_STREAM_FEATURE_VOL_SND;
860 else if (strcasecmp(name,"VOL_RCV")==0) ret|=AUDIO_STREAM_FEATURE_VOL_RCV;
861 else if (strcasecmp(name,"DTMF")==0) ret|=AUDIO_STREAM_FEATURE_DTMF;
862 else if (strcasecmp(name,"DTMF_ECHO")==0) ret|=AUDIO_STREAM_FEATURE_DTMF_ECHO;
863 else if (strcasecmp(name,"ALL")==0) ret|=AUDIO_STREAM_FEATURE_ALL;
864 else if (strcasecmp(name,"NONE")==0) ret=0;
865 else ms_error("Unsupported audio feature %s requested in config file.",name);
869 }else ret=AUDIO_STREAM_FEATURE_ALL;
874 #ifdef HAVE_GETIFADDRS
877 static int get_local_ip_with_getifaddrs(int type, char *address, int size)
880 struct ifaddrs *ifpstart;
883 if (getifaddrs(&ifpstart) < 0) {
887 for (ifp = ifpstart; ifp != NULL; ifp = ifp->ifa_next) {
888 if (ifp->ifa_addr && ifp->ifa_addr->sa_family == type
889 && (ifp->ifa_flags & IFF_RUNNING) && !(ifp->ifa_flags & IFF_LOOPBACK))
891 getnameinfo(ifp->ifa_addr,
893 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in),
894 address, size, NULL, 0, NI_NUMERICHOST);
895 if (strchr(address, '%') == NULL) { /*avoid ipv6 link-local addresses */
896 /*ms_message("getifaddrs() found %s",address);*/
902 freeifaddrs(ifpstart);
908 static int get_local_ip_for_with_connect(int type, const char *dest, char *result){
910 struct addrinfo hints;
911 struct addrinfo *res=NULL;
912 struct sockaddr_storage addr;
913 struct sockaddr *p_addr=(struct sockaddr*)&addr;
917 memset(&hints,0,sizeof(hints));
918 hints.ai_family=(type==AF_INET6) ? PF_INET6 : PF_INET;
919 hints.ai_socktype=SOCK_DGRAM;
920 /*hints.ai_flags=AI_NUMERICHOST|AI_CANONNAME;*/
921 err=getaddrinfo(dest,"5060",&hints,&res);
923 ms_error("getaddrinfo() error: %s",gai_strerror(err));
927 ms_error("bug: getaddrinfo returned nothing.");
930 sock=socket(res->ai_family,SOCK_DGRAM,0);
932 err=setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(SOCKET_OPTION_VALUE)&tmp,sizeof(int));
934 ms_warning("Error in setsockopt: %s",strerror(errno));
936 err=connect(sock,res->ai_addr,res->ai_addrlen);
938 ms_error("Error in connect: %s",strerror(errno));
946 err=getsockname(sock,(struct sockaddr*)&addr,&s);
948 ms_error("Error in getsockname: %s",strerror(errno));
952 if (p_addr->sa_family==AF_INET){
953 struct sockaddr_in *p_sin=(struct sockaddr_in*)p_addr;
954 if (p_sin->sin_addr.s_addr==0){
959 err=getnameinfo((struct sockaddr *)&addr,s,result,LINPHONE_IPADDR_SIZE,NULL,0,NI_NUMERICHOST);
961 ms_error("getnameinfo error: %s",strerror(errno));
964 ms_message("Local interface to reach %s is %s.",dest,result);
968 int linphone_core_get_local_ip_for(int type, const char *dest, char *result){
969 strcpy(result,type==AF_INET ? "127.0.0.1" : "::1");
970 #ifdef HAVE_GETIFADDRS
972 /*we use getifaddrs for lookup of default interface */
975 found_ifs=get_local_ip_with_getifaddrs(type,result,LINPHONE_IPADDR_SIZE);
978 }else if (found_ifs<=0){
979 /*absolutely no network on this machine */
984 /*else use connect to find the best local ip address */
986 dest="87.98.157.38"; /*a public IP address*/
987 else dest="2a00:1450:8002::68";
988 return get_local_ip_for_with_connect(type,dest,result);
996 void _linphone_core_configure_resolver(){
997 /*bionic declares _res but does not define nor export it !!*/
999 /*timeout and attempts are the same as retrans and retry, but are android specific names.*/
1000 setenv("RES_OPTIONS","timeout:2 attempts:2 retrans:2 retry:2",1);
1003 _res.retrans=2; /*retransmit every two seconds*/
1004 _res.retry=2; /*only two times per DNS server*/
1010 void _linphone_core_configure_resolver(){