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;
411 int family = PF_INET;
415 char host[NI_MAXHOST];
417 if ((sscanf(server, "[%64[^]]]:%d", host, &port_int) == 2) || (sscanf(server, "[%64[^]]]", host) == 1)) {
420 p1 = strchr(server, ':');
421 p2 = strrchr(server, ':');
422 if (p1 && p2 && (p1 != p2)) {
424 host[NI_MAXHOST-1]='\0';
425 strncpy(host, server, sizeof(host) - 1);
426 } else if (sscanf(server, "%[^:]:%d", host, &port_int) != 2) {
427 host[NI_MAXHOST-1]='\0';
428 strncpy(host, server, sizeof(host) - 1);
431 snprintf(port, sizeof(port), "%d", port_int);
432 memset(&hints,0,sizeof(hints));
433 hints.ai_family=family;
434 hints.ai_socktype=SOCK_DGRAM;
435 hints.ai_protocol=IPPROTO_UDP;
436 ret=getaddrinfo(host,port,&hints,&res);
438 ms_error("getaddrinfo() failed for %s:%s : %s",host,port,gai_strerror(ret));
442 memcpy(ss,res->ai_addr,res->ai_addrlen);
443 *socklen=res->ai_addrlen;
448 static int recvStunResponse(ortp_socket_t sock, char *ipaddr, int *port, int *id){
449 char buf[STUN_MAX_MESSAGE_SIZE];
450 int len = STUN_MAX_MESSAGE_SIZE;
452 len=recv(sock,buf,len,0);
455 stunParseMessage(buf,len, &resp );
456 *id=resp.msgHdr.tr_id.octet[0];
457 if (resp.hasXorMappedAddress){
458 *port = resp.xorMappedAddress.ipv4.port;
459 ia.s_addr=htonl(resp.xorMappedAddress.ipv4.addr);
460 }else if (resp.hasMappedAddress){
461 *port = resp.mappedAddress.ipv4.port;
462 ia.s_addr=htonl(resp.mappedAddress.ipv4.addr);
464 strncpy(ipaddr,inet_ntoa(ia),LINPHONE_IPADDR_SIZE);
469 /* this functions runs a simple stun test and return the number of milliseconds to complete the tests, or -1 if the test were failed.*/
470 int linphone_core_run_stun_tests(LinphoneCore *lc, LinphoneCall *call){
471 const char *server=linphone_core_get_stun_server(lc);
472 StunCandidate *ac=&call->ac;
473 StunCandidate *vc=&call->vc;
475 if (lc->sip_conf.ipv6_enabled){
476 ms_warning("stun support is not implemented for ipv6");
480 struct sockaddr_storage ss;
482 ortp_socket_t sock1=-1, sock2=-1;
484 bool_t video_enabled=linphone_core_video_enabled(lc);
485 bool_t got_audio,got_video;
486 bool_t cone_audio=FALSE,cone_video=FALSE;
487 struct timeval init,cur;
491 if (parse_hostname_to_addr(server,&ss,&ss_len)<0){
492 ms_error("Fail to parser stun server address: %s",server);
495 if (lc->vtable.display_status!=NULL)
496 lc->vtable.display_status(lc,_("Stun lookup in progress..."));
498 /*create the two audio and video RTP sockets, and send STUN message to our stun server */
499 sock1=create_socket(call->audio_port);
500 if (sock1==-1) return -1;
502 sock2=create_socket(call->video_port);
503 if (sock2==-1) return -1;
507 gettimeofday(&init,NULL);
512 ms_message("Sending stun requests...");
513 sendStunRequest(sock1,(struct sockaddr*)&ss,ss_len,11,TRUE);
514 sendStunRequest(sock1,(struct sockaddr*)&ss,ss_len,1,FALSE);
516 sendStunRequest(sock2,(struct sockaddr*)&ss,ss_len,22,TRUE);
517 sendStunRequest(sock2,(struct sockaddr*)&ss,ss_len,2,FALSE);
526 if (recvStunResponse(sock1,ac->addr,
528 ms_message("STUN test result: local audio port maps to %s:%i",
535 if (recvStunResponse(sock2,vc->addr,
537 ms_message("STUN test result: local video port maps to %s:%i",
544 gettimeofday(&cur,NULL);
545 elapsed=((cur.tv_sec-init.tv_sec)*1000.0) + ((cur.tv_usec-init.tv_usec)/1000.0);
547 ms_message("Stun responses timeout, going ahead.");
552 }while(!(got_audio && (got_video||sock2==-1) ) );
553 if (ret==0) ret=(int)elapsed;
555 ms_error("No stun server response for audio port.");
558 ms_message("NAT is symmetric for audio port");
563 ms_error("No stun server response for video port.");
566 ms_message("NAT is symmetric for video port.");
571 if (sock2!=-1) close_socket(sock2);
577 void linphone_core_adapt_to_network(LinphoneCore *lc, int ping_time_ms, LinphoneCallParams *params){
578 if (lp_config_get_int(lc->config,"net","activate_edge_workarounds",0)==1){
579 ms_message("Stun server ping time is %i ms",ping_time_ms);
580 int threshold=lp_config_get_int(lc->config,"net","edge_ping_time",500);
582 if (ping_time_ms>threshold){
583 int edge_ptime=lp_config_get_int(lc->config,"net","edge_ptime",100);
584 int edge_bw=lp_config_get_int(lc->config,"net","edge_bw",20);
585 /* we are in a 2G network*/
586 params->up_bw=params->down_bw=edge_bw;
587 params->up_ptime=params->down_ptime=edge_ptime;
588 params->has_video=FALSE;
590 }/*else use default settings */
596 int linphone_core_gather_ice_candidates(LinphoneCore *lc, LinphoneCall *call)
599 struct sockaddr_storage ss;
601 IceCheckList *audio_check_list;
602 IceCheckList *video_check_list;
603 const char *server = linphone_core_get_stun_server(lc);
605 if ((server == NULL) || (call->ice_session == NULL)) return -1;
606 audio_check_list = ice_session_check_list(call->ice_session, 0);
607 video_check_list = ice_session_check_list(call->ice_session, 1);
608 if (audio_check_list == NULL) return -1;
610 if (lc->sip_conf.ipv6_enabled){
611 ms_warning("stun support is not implemented for ipv6");
615 if (parse_hostname_to_addr(server, &ss, &ss_len) < 0) {
616 ms_error("Fail to parser stun server address: %s", server);
619 if (lc->vtable.display_status != NULL)
620 lc->vtable.display_status(lc, _("ICE local candidates gathering in progress..."));
622 /* Gather local host candidates. */
623 if (linphone_core_get_local_ip_for(AF_INET, server, local_addr) < 0) {
624 ms_error("Fail to get local ip");
627 ice_add_local_candidate(audio_check_list, "host", local_addr, call->audio_port, 1, NULL);
628 ice_add_local_candidate(audio_check_list, "host", local_addr, call->audio_port + 1, 2, NULL);
629 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateInProgress;
630 if (call->params.has_video && (video_check_list != NULL)) {
631 ice_add_local_candidate(video_check_list, "host", local_addr, call->video_port, 1, NULL);
632 ice_add_local_candidate(video_check_list, "host", local_addr, call->video_port + 1, 2, NULL);
633 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateInProgress;
636 ms_message("ICE: gathering candidate from [%s]",server);
637 /* Gather local srflx candidates. */
638 ice_session_gather_candidates(call->ice_session, ss, ss_len);
642 void linphone_core_update_ice_state_in_call_stats(LinphoneCall *call)
644 IceCheckList *audio_check_list;
645 IceCheckList *video_check_list;
646 IceSessionState session_state;
648 if (call->ice_session == NULL) return;
649 audio_check_list = ice_session_check_list(call->ice_session, 0);
650 video_check_list = ice_session_check_list(call->ice_session, 1);
651 if (audio_check_list == NULL) return;
653 session_state = ice_session_state(call->ice_session);
654 if ((session_state == IS_Completed) || ((session_state == IS_Failed) && (ice_session_has_completed_check_list(call->ice_session) == TRUE))) {
655 if (ice_check_list_state(audio_check_list) == ICL_Completed) {
656 switch (ice_check_list_selected_valid_candidate_type(audio_check_list)) {
657 case ICT_HostCandidate:
658 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateHostConnection;
660 case ICT_ServerReflexiveCandidate:
661 case ICT_PeerReflexiveCandidate:
662 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateReflexiveConnection;
664 case ICT_RelayedCandidate:
665 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateRelayConnection;
669 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateFailed;
671 if (call->params.has_video && (video_check_list != NULL)) {
672 if (ice_check_list_state(video_check_list) == ICL_Completed) {
673 switch (ice_check_list_selected_valid_candidate_type(video_check_list)) {
674 case ICT_HostCandidate:
675 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateHostConnection;
677 case ICT_ServerReflexiveCandidate:
678 case ICT_PeerReflexiveCandidate:
679 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateReflexiveConnection;
681 case ICT_RelayedCandidate:
682 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateRelayConnection;
686 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateFailed;
690 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateFailed;
691 if (call->params.has_video && (video_check_list != NULL)) {
692 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateFailed;
697 void linphone_core_update_local_media_description_from_ice(SalMediaDescription *desc, IceSession *session)
699 const char *rtp_addr, *rtcp_addr;
700 IceSessionState session_state = ice_session_state(session);
705 if (session_state == IS_Completed) {
706 desc->ice_completed = TRUE;
707 result = ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, 0), &rtp_addr, NULL, NULL, NULL);
708 if (result == TRUE) {
709 strncpy(desc->addr, rtp_addr, sizeof(desc->addr));
711 ms_warning("If ICE has completed successfully, rtp_addr should be set!");
715 desc->ice_completed = FALSE;
717 strncpy(desc->ice_pwd, ice_session_local_pwd(session), sizeof(desc->ice_pwd));
718 strncpy(desc->ice_ufrag, ice_session_local_ufrag(session), sizeof(desc->ice_ufrag));
719 for (i = 0; i < desc->nstreams; i++) {
720 SalStreamDescription *stream = &desc->streams[i];
721 IceCheckList *cl = ice_session_check_list(session, i);
723 if (cl == NULL) continue;
724 if (ice_check_list_state(cl) == ICL_Completed) {
725 stream->ice_completed = TRUE;
726 result = ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
728 stream->ice_completed = FALSE;
729 result = ice_check_list_default_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
731 if (result == TRUE) {
732 strncpy(stream->rtp_addr, rtp_addr, sizeof(stream->rtp_addr));
733 strncpy(stream->rtcp_addr, rtcp_addr, sizeof(stream->rtcp_addr));
735 memset(stream->rtp_addr, 0, sizeof(stream->rtp_addr));
736 memset(stream->rtcp_addr, 0, sizeof(stream->rtcp_addr));
738 if ((strlen(ice_check_list_local_pwd(cl)) != strlen(desc->ice_pwd)) || (strcmp(ice_check_list_local_pwd(cl), desc->ice_pwd)))
739 strncpy(stream->ice_pwd, ice_check_list_local_pwd(cl), sizeof(stream->ice_pwd));
741 memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
742 if ((strlen(ice_check_list_local_ufrag(cl)) != strlen(desc->ice_ufrag)) || (strcmp(ice_check_list_local_ufrag(cl), desc->ice_ufrag)))
743 strncpy(stream->ice_ufrag, ice_check_list_local_ufrag(cl), sizeof(stream->ice_ufrag));
745 memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
746 stream->ice_mismatch = ice_check_list_is_mismatch(cl);
747 if ((ice_check_list_state(cl) == ICL_Running) || (ice_check_list_state(cl) == ICL_Completed)) {
748 memset(stream->ice_candidates, 0, sizeof(stream->ice_candidates));
749 for (j = 0; j < MIN(ms_list_size(cl->local_candidates), SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES); j++) {
750 SalIceCandidate *sal_candidate = &stream->ice_candidates[nb_candidates];
751 IceCandidate *ice_candidate = ms_list_nth_data(cl->local_candidates, j);
752 const char *default_addr = NULL;
753 int default_port = 0;
754 if (ice_candidate->componentID == 1) {
755 default_addr = stream->rtp_addr;
756 default_port = stream->rtp_port;
757 } else if (ice_candidate->componentID == 2) {
758 default_addr = stream->rtcp_addr;
759 default_port = stream->rtcp_port;
761 if (default_addr[0] == '\0') default_addr = desc->addr;
762 /* 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. */
763 if ((ice_check_list_state(cl) == ICL_Completed)
764 && !((ice_candidate->taddr.port == default_port) && (strlen(ice_candidate->taddr.ip) == strlen(default_addr)) && (strcmp(ice_candidate->taddr.ip, default_addr) == 0)))
766 strncpy(sal_candidate->foundation, ice_candidate->foundation, sizeof(sal_candidate->foundation));
767 sal_candidate->componentID = ice_candidate->componentID;
768 sal_candidate->priority = ice_candidate->priority;
769 strncpy(sal_candidate->type, ice_candidate_type(ice_candidate), sizeof(sal_candidate->type));
770 strncpy(sal_candidate->addr, ice_candidate->taddr.ip, sizeof(sal_candidate->addr));
771 sal_candidate->port = ice_candidate->taddr.port;
772 if ((ice_candidate->base != NULL) && (ice_candidate->base != ice_candidate)) {
773 strncpy(sal_candidate->raddr, ice_candidate->base->taddr.ip, sizeof(sal_candidate->raddr));
774 sal_candidate->rport = ice_candidate->base->taddr.port;
779 if ((ice_check_list_state(cl) == ICL_Completed) && (ice_session_role(session) == IR_Controlling)) {
780 int rtp_port, rtcp_port;
781 memset(stream->ice_remote_candidates, 0, sizeof(stream->ice_remote_candidates));
782 ice_check_list_selected_valid_remote_candidate(cl, &rtp_addr, &rtp_port, &rtcp_addr, &rtcp_port);
783 strncpy(stream->ice_remote_candidates[0].addr, rtp_addr, sizeof(stream->ice_remote_candidates[0].addr));
784 stream->ice_remote_candidates[0].port = rtp_port;
785 strncpy(stream->ice_remote_candidates[1].addr, rtcp_addr, sizeof(stream->ice_remote_candidates[1].addr));
786 stream->ice_remote_candidates[1].port = rtcp_port;
791 static void get_default_addr_and_port(uint16_t componentID, const SalMediaDescription *md, const SalStreamDescription *stream, const char **addr, int *port)
793 if (componentID == 1) {
794 *addr = stream->rtp_addr;
795 *port = stream->rtp_port;
796 } else if (componentID == 2) {
797 *addr = stream->rtcp_addr;
798 *port = stream->rtcp_port;
800 if ((*addr)[0] == '\0') *addr = md->addr;
803 void linphone_core_update_ice_from_remote_media_description(LinphoneCall *call, const SalMediaDescription *md)
805 bool_t ice_restarted = FALSE;
807 if ((md->ice_pwd[0] != '\0') && (md->ice_ufrag[0] != '\0')) {
810 /* Check for ICE restart and set remote credentials. */
811 if ((strcmp(md->addr, "0.0.0.0") == 0) || (strcmp(md->addr, "::0") == 0)) {
812 ice_session_restart(call->ice_session);
813 ice_restarted = TRUE;
815 for (i = 0; i < md->nstreams; i++) {
816 const SalStreamDescription *stream = &md->streams[i];
817 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
818 if (cl && (strcmp(stream->rtp_addr, "0.0.0.0") == 0)) {
819 ice_session_restart(call->ice_session);
820 ice_restarted = TRUE;
825 if ((ice_session_remote_ufrag(call->ice_session) == NULL) && (ice_session_remote_pwd(call->ice_session) == NULL)) {
826 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
827 } else if (ice_session_remote_credentials_changed(call->ice_session, md->ice_ufrag, md->ice_pwd)) {
828 if (ice_restarted == FALSE) {
829 ice_session_restart(call->ice_session);
830 ice_restarted = TRUE;
832 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
834 for (i = 0; i < md->nstreams; i++) {
835 const SalStreamDescription *stream = &md->streams[i];
836 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
837 if (cl && (stream->ice_pwd[0] != '\0') && (stream->ice_ufrag[0] != '\0')) {
838 if (ice_check_list_remote_credentials_changed(cl, stream->ice_ufrag, stream->ice_pwd)) {
839 if (ice_restarted == FALSE) {
840 ice_session_restart(call->ice_session);
841 ice_restarted = TRUE;
843 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
849 /* Create ICE check lists if needed and parse ICE attributes. */
850 for (i = 0; i < md->nstreams; i++) {
851 const SalStreamDescription *stream = &md->streams[i];
852 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
854 cl = ice_check_list_new();
855 ice_session_add_check_list(call->ice_session, cl);
856 switch (stream->type) {
858 if (call->audiostream != NULL) call->audiostream->ice_check_list = cl;
861 if (call->videostream != NULL) call->videostream->ice_check_list = cl;
867 if ((stream->ice_mismatch == TRUE) || (stream->rtp_port == 0)) {
868 ice_check_list_set_state(cl, ICL_Failed);
870 if ((stream->ice_pwd[0] != '\0') && (stream->ice_ufrag[0] != '\0'))
871 ice_check_list_set_remote_credentials(cl, stream->ice_ufrag, stream->ice_pwd);
872 for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES; j++) {
873 const SalIceCandidate *candidate = &stream->ice_candidates[j];
874 bool_t default_candidate = FALSE;
875 const char *addr = NULL;
877 if (candidate->addr[0] == '\0') break;
878 if ((candidate->componentID == 0) || (candidate->componentID > 2)) continue;
879 get_default_addr_and_port(candidate->componentID, md, stream, &addr, &port);
880 if (addr && (candidate->port == port) && (strlen(candidate->addr) == strlen(addr)) && (strcmp(candidate->addr, addr) == 0))
881 default_candidate = TRUE;
882 ice_add_remote_candidate(cl, candidate->type, candidate->addr, candidate->port, candidate->componentID,
883 candidate->priority, candidate->foundation, default_candidate);
885 if (ice_restarted == FALSE) {
886 bool_t losing_pairs_added = FALSE;
887 for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES; j++) {
888 const SalIceRemoteCandidate *candidate = &stream->ice_remote_candidates[j];
889 const char *addr = NULL;
891 int componentID = j + 1;
892 if (candidate->addr[0] == '\0') break;
893 get_default_addr_and_port(componentID, md, stream, &addr, &port);
894 ice_add_losing_pair(cl, j + 1, candidate->addr, candidate->port, addr, port);
895 losing_pairs_added = TRUE;
897 if (losing_pairs_added == TRUE) ice_check_list_check_completed(cl);
901 for (i = ice_session_nb_check_lists(call->ice_session); i > md->nstreams; i--) {
902 ice_session_remove_check_list(call->ice_session, ice_session_check_list(call->ice_session, i - 1));
904 ice_session_check_mismatch(call->ice_session);
906 /* Response from remote does not contain mandatory ICE attributes, delete the session. */
907 linphone_call_delete_ice_session(call);
910 if (ice_session_nb_check_lists(call->ice_session) == 0) {
911 linphone_call_delete_ice_session(call);
915 bool_t linphone_core_media_description_contains_video_stream(const SalMediaDescription *md)
919 for (i = 0; i < md->nstreams; i++) {
920 if ((md->streams[i].type == SalVideo) && (md->streams[i].rtp_port != 0))
926 void linphone_core_deactivate_ice_for_deactivated_media_streams(LinphoneCall *call, const SalMediaDescription *md)
929 for (i = 0; i < md->nstreams; i++) {
930 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
931 if (cl && (md->streams[i].rtp_port == 0)) {
932 if (ice_check_list_state(cl) != ICL_Completed) ice_check_list_set_state(cl, ICL_Failed);
937 LinphoneCall * is_a_linphone_call(void *user_pointer){
938 LinphoneCall *call=(LinphoneCall*)user_pointer;
939 if (call==NULL) return NULL;
940 return call->magic==linphone_call_magic ? call : NULL;
943 LinphoneProxyConfig * is_a_linphone_proxy_config(void *user_pointer){
944 LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)user_pointer;
945 if (cfg==NULL) return NULL;
946 return cfg->magic==linphone_proxy_config_magic ? cfg : NULL;
949 unsigned int linphone_core_get_audio_features(LinphoneCore *lc){
951 const char *features=lp_config_get_string(lc->config,"sound","features",NULL);
956 strncpy(tmp,features,sizeof(tmp)-1);
957 for(p=tmp;*p!='\0';p++){
958 if (*p==' ') continue;
962 ms_message("Found audio feature %s",name);
963 if (strcasecmp(name,"PLC")==0) ret|=AUDIO_STREAM_FEATURE_PLC;
964 else if (strcasecmp(name,"EC")==0) ret|=AUDIO_STREAM_FEATURE_EC;
965 else if (strcasecmp(name,"EQUALIZER")==0) ret|=AUDIO_STREAM_FEATURE_EQUALIZER;
966 else if (strcasecmp(name,"VOL_SND")==0) ret|=AUDIO_STREAM_FEATURE_VOL_SND;
967 else if (strcasecmp(name,"VOL_RCV")==0) ret|=AUDIO_STREAM_FEATURE_VOL_RCV;
968 else if (strcasecmp(name,"DTMF")==0) ret|=AUDIO_STREAM_FEATURE_DTMF;
969 else if (strcasecmp(name,"DTMF_ECHO")==0) ret|=AUDIO_STREAM_FEATURE_DTMF_ECHO;
970 else if (strcasecmp(name,"ALL")==0) ret|=AUDIO_STREAM_FEATURE_ALL;
971 else if (strcasecmp(name,"NONE")==0) ret=0;
972 else ms_error("Unsupported audio feature %s requested in config file.",name);
976 }else ret=AUDIO_STREAM_FEATURE_ALL;
981 #ifdef HAVE_GETIFADDRS
984 static int get_local_ip_with_getifaddrs(int type, char *address, int size)
987 struct ifaddrs *ifpstart;
990 if (getifaddrs(&ifpstart) < 0) {
994 #define UP_FLAG IFF_UP /* interface is up */
996 #define UP_FLAG IFF_RUNNING /* resources allocated */
999 for (ifp = ifpstart; ifp != NULL; ifp = ifp->ifa_next) {
1000 if (ifp->ifa_addr && ifp->ifa_addr->sa_family == type
1001 && (ifp->ifa_flags & UP_FLAG) && !(ifp->ifa_flags & IFF_LOOPBACK))
1003 getnameinfo(ifp->ifa_addr,
1004 (type == AF_INET6) ?
1005 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in),
1006 address, size, NULL, 0, NI_NUMERICHOST);
1007 if (strchr(address, '%') == NULL) { /*avoid ipv6 link-local addresses */
1008 /*ms_message("getifaddrs() found %s",address);*/
1014 freeifaddrs(ifpstart);
1020 static int get_local_ip_for_with_connect(int type, const char *dest, char *result){
1022 struct addrinfo hints;
1023 struct addrinfo *res=NULL;
1024 struct sockaddr_storage addr;
1025 struct sockaddr *p_addr=(struct sockaddr*)&addr;
1029 memset(&hints,0,sizeof(hints));
1030 hints.ai_family=(type==AF_INET6) ? PF_INET6 : PF_INET;
1031 hints.ai_socktype=SOCK_DGRAM;
1032 /*hints.ai_flags=AI_NUMERICHOST|AI_CANONNAME;*/
1033 err=getaddrinfo(dest,"5060",&hints,&res);
1035 ms_error("getaddrinfo() error: %s",gai_strerror(err));
1039 ms_error("bug: getaddrinfo returned nothing.");
1042 sock=socket(res->ai_family,SOCK_DGRAM,0);
1044 err=setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(SOCKET_OPTION_VALUE)&tmp,sizeof(int));
1046 ms_warning("Error in setsockopt: %s",strerror(errno));
1048 err=connect(sock,res->ai_addr,res->ai_addrlen);
1050 ms_error("Error in connect: %s",strerror(errno));
1058 err=getsockname(sock,(struct sockaddr*)&addr,&s);
1060 ms_error("Error in getsockname: %s",strerror(errno));
1064 if (p_addr->sa_family==AF_INET){
1065 struct sockaddr_in *p_sin=(struct sockaddr_in*)p_addr;
1066 if (p_sin->sin_addr.s_addr==0){
1071 err=getnameinfo((struct sockaddr *)&addr,s,result,LINPHONE_IPADDR_SIZE,NULL,0,NI_NUMERICHOST);
1073 ms_error("getnameinfo error: %s",strerror(errno));
1076 ms_message("Local interface to reach %s is %s.",dest,result);
1080 int linphone_core_get_local_ip_for(int type, const char *dest, char *result){
1081 strcpy(result,type==AF_INET ? "127.0.0.1" : "::1");
1082 #ifdef HAVE_GETIFADDRS
1084 /*we use getifaddrs for lookup of default interface */
1087 found_ifs=get_local_ip_with_getifaddrs(type,result,LINPHONE_IPADDR_SIZE);
1090 }else if (found_ifs<=0){
1091 /*absolutely no network on this machine */
1096 /*else use connect to find the best local ip address */
1098 dest="87.98.157.38"; /*a public IP address*/
1099 else dest="2a00:1450:8002::68";
1100 return get_local_ip_for_with_connect(type,dest,result);
1108 void _linphone_core_configure_resolver(){
1109 /*bionic declares _res but does not define nor export it !!*/
1111 /*timeout and attempts are the same as retrans and retry, but are android specific names.*/
1112 setenv("RES_OPTIONS","timeout:2 attempts:2 retrans:2 retry:2",1);
1115 _res.retrans=2; /*retransmit every two seconds*/
1116 _res.retry=2; /*only two times per DNS server*/
1122 void _linphone_core_configure_resolver(){