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;
589 params->low_bandwidth=TRUE;
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 if ((ice_check_list_state(audio_check_list) != ICL_Completed) && (ice_check_list_candidates_gathered(audio_check_list) == FALSE)) {
628 ice_add_local_candidate(audio_check_list, "host", local_addr, call->audio_port, 1, NULL);
629 ice_add_local_candidate(audio_check_list, "host", local_addr, call->audio_port + 1, 2, NULL);
630 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateInProgress;
632 if (call->params.has_video && (video_check_list != NULL)
633 && (ice_check_list_state(video_check_list) != ICL_Completed) && (ice_check_list_candidates_gathered(video_check_list) == FALSE)) {
634 ice_add_local_candidate(video_check_list, "host", local_addr, call->video_port, 1, NULL);
635 ice_add_local_candidate(video_check_list, "host", local_addr, call->video_port + 1, 2, NULL);
636 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateInProgress;
639 ms_message("ICE: gathering candidate from [%s]",server);
640 /* Gather local srflx candidates. */
641 ice_session_gather_candidates(call->ice_session, ss, ss_len);
645 void linphone_core_update_ice_state_in_call_stats(LinphoneCall *call)
647 IceCheckList *audio_check_list;
648 IceCheckList *video_check_list;
649 IceSessionState session_state;
651 if (call->ice_session == NULL) return;
652 audio_check_list = ice_session_check_list(call->ice_session, 0);
653 video_check_list = ice_session_check_list(call->ice_session, 1);
654 if (audio_check_list == NULL) return;
656 session_state = ice_session_state(call->ice_session);
657 if ((session_state == IS_Completed) || ((session_state == IS_Failed) && (ice_session_has_completed_check_list(call->ice_session) == TRUE))) {
658 if (ice_check_list_state(audio_check_list) == ICL_Completed) {
659 switch (ice_check_list_selected_valid_candidate_type(audio_check_list)) {
660 case ICT_HostCandidate:
661 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateHostConnection;
663 case ICT_ServerReflexiveCandidate:
664 case ICT_PeerReflexiveCandidate:
665 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateReflexiveConnection;
667 case ICT_RelayedCandidate:
668 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateRelayConnection;
672 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateFailed;
674 if (call->params.has_video && (video_check_list != NULL)) {
675 if (ice_check_list_state(video_check_list) == ICL_Completed) {
676 switch (ice_check_list_selected_valid_candidate_type(video_check_list)) {
677 case ICT_HostCandidate:
678 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateHostConnection;
680 case ICT_ServerReflexiveCandidate:
681 case ICT_PeerReflexiveCandidate:
682 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateReflexiveConnection;
684 case ICT_RelayedCandidate:
685 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateRelayConnection;
689 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateFailed;
692 } else if (session_state == IS_Running) {
693 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateInProgress;
694 if (call->params.has_video && (video_check_list != NULL)) {
695 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateInProgress;
698 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateFailed;
699 if (call->params.has_video && (video_check_list != NULL)) {
700 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateFailed;
705 void linphone_core_update_local_media_description_from_ice(SalMediaDescription *desc, IceSession *session)
707 const char *rtp_addr, *rtcp_addr;
708 IceSessionState session_state = ice_session_state(session);
713 if (session_state == IS_Completed) {
714 desc->ice_completed = TRUE;
715 result = ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, 0), &rtp_addr, NULL, NULL, NULL);
716 if (result == TRUE) {
717 strncpy(desc->addr, rtp_addr, sizeof(desc->addr));
719 ms_warning("If ICE has completed successfully, rtp_addr should be set!");
723 desc->ice_completed = FALSE;
725 strncpy(desc->ice_pwd, ice_session_local_pwd(session), sizeof(desc->ice_pwd));
726 strncpy(desc->ice_ufrag, ice_session_local_ufrag(session), sizeof(desc->ice_ufrag));
727 for (i = 0; i < desc->nstreams; i++) {
728 SalStreamDescription *stream = &desc->streams[i];
729 IceCheckList *cl = ice_session_check_list(session, i);
731 if (cl == NULL) continue;
732 if (ice_check_list_state(cl) == ICL_Completed) {
733 stream->ice_completed = TRUE;
734 result = ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
736 stream->ice_completed = FALSE;
737 result = ice_check_list_default_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
739 if (result == TRUE) {
740 strncpy(stream->rtp_addr, rtp_addr, sizeof(stream->rtp_addr));
741 strncpy(stream->rtcp_addr, rtcp_addr, sizeof(stream->rtcp_addr));
743 memset(stream->rtp_addr, 0, sizeof(stream->rtp_addr));
744 memset(stream->rtcp_addr, 0, sizeof(stream->rtcp_addr));
746 if ((strlen(ice_check_list_local_pwd(cl)) != strlen(desc->ice_pwd)) || (strcmp(ice_check_list_local_pwd(cl), desc->ice_pwd)))
747 strncpy(stream->ice_pwd, ice_check_list_local_pwd(cl), sizeof(stream->ice_pwd));
749 memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
750 if ((strlen(ice_check_list_local_ufrag(cl)) != strlen(desc->ice_ufrag)) || (strcmp(ice_check_list_local_ufrag(cl), desc->ice_ufrag)))
751 strncpy(stream->ice_ufrag, ice_check_list_local_ufrag(cl), sizeof(stream->ice_ufrag));
753 memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
754 stream->ice_mismatch = ice_check_list_is_mismatch(cl);
755 if ((ice_check_list_state(cl) == ICL_Running) || (ice_check_list_state(cl) == ICL_Completed)) {
756 memset(stream->ice_candidates, 0, sizeof(stream->ice_candidates));
757 for (j = 0; j < MIN(ms_list_size(cl->local_candidates), SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES); j++) {
758 SalIceCandidate *sal_candidate = &stream->ice_candidates[nb_candidates];
759 IceCandidate *ice_candidate = ms_list_nth_data(cl->local_candidates, j);
760 const char *default_addr = NULL;
761 int default_port = 0;
762 if (ice_candidate->componentID == 1) {
763 default_addr = stream->rtp_addr;
764 default_port = stream->rtp_port;
765 } else if (ice_candidate->componentID == 2) {
766 default_addr = stream->rtcp_addr;
767 default_port = stream->rtcp_port;
769 if (default_addr[0] == '\0') default_addr = desc->addr;
770 /* 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. */
771 if ((ice_check_list_state(cl) == ICL_Completed)
772 && !((ice_candidate->taddr.port == default_port) && (strlen(ice_candidate->taddr.ip) == strlen(default_addr)) && (strcmp(ice_candidate->taddr.ip, default_addr) == 0)))
774 strncpy(sal_candidate->foundation, ice_candidate->foundation, sizeof(sal_candidate->foundation));
775 sal_candidate->componentID = ice_candidate->componentID;
776 sal_candidate->priority = ice_candidate->priority;
777 strncpy(sal_candidate->type, ice_candidate_type(ice_candidate), sizeof(sal_candidate->type));
778 strncpy(sal_candidate->addr, ice_candidate->taddr.ip, sizeof(sal_candidate->addr));
779 sal_candidate->port = ice_candidate->taddr.port;
780 if ((ice_candidate->base != NULL) && (ice_candidate->base != ice_candidate)) {
781 strncpy(sal_candidate->raddr, ice_candidate->base->taddr.ip, sizeof(sal_candidate->raddr));
782 sal_candidate->rport = ice_candidate->base->taddr.port;
787 if ((ice_check_list_state(cl) == ICL_Completed) && (ice_session_role(session) == IR_Controlling)) {
788 int rtp_port, rtcp_port;
789 memset(stream->ice_remote_candidates, 0, sizeof(stream->ice_remote_candidates));
790 if (ice_check_list_selected_valid_remote_candidate(cl, &rtp_addr, &rtp_port, &rtcp_addr, &rtcp_port) == TRUE) {
791 strncpy(stream->ice_remote_candidates[0].addr, rtp_addr, sizeof(stream->ice_remote_candidates[0].addr));
792 stream->ice_remote_candidates[0].port = rtp_port;
793 strncpy(stream->ice_remote_candidates[1].addr, rtcp_addr, sizeof(stream->ice_remote_candidates[1].addr));
794 stream->ice_remote_candidates[1].port = rtcp_port;
796 ms_error("ice: Selected valid remote candidates should be present if the check list is in the Completed state");
799 for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES; j++) {
800 stream->ice_remote_candidates[j].addr[0] = '\0';
801 stream->ice_remote_candidates[j].port = 0;
807 static void get_default_addr_and_port(uint16_t componentID, const SalMediaDescription *md, const SalStreamDescription *stream, const char **addr, int *port)
809 if (componentID == 1) {
810 *addr = stream->rtp_addr;
811 *port = stream->rtp_port;
812 } else if (componentID == 2) {
813 *addr = stream->rtcp_addr;
814 *port = stream->rtcp_port;
816 if ((*addr)[0] == '\0') *addr = md->addr;
819 void linphone_core_update_ice_from_remote_media_description(LinphoneCall *call, const SalMediaDescription *md)
821 bool_t ice_restarted = FALSE;
823 if ((md->ice_pwd[0] != '\0') && (md->ice_ufrag[0] != '\0')) {
826 /* Check for ICE restart and set remote credentials. */
827 if ((strcmp(md->addr, "0.0.0.0") == 0) || (strcmp(md->addr, "::0") == 0)) {
828 ice_session_restart(call->ice_session);
829 ice_restarted = TRUE;
831 for (i = 0; i < md->nstreams; i++) {
832 const SalStreamDescription *stream = &md->streams[i];
833 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
834 if (cl && (strcmp(stream->rtp_addr, "0.0.0.0") == 0)) {
835 ice_session_restart(call->ice_session);
836 ice_restarted = TRUE;
841 if ((ice_session_remote_ufrag(call->ice_session) == NULL) && (ice_session_remote_pwd(call->ice_session) == NULL)) {
842 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
843 } else if (ice_session_remote_credentials_changed(call->ice_session, md->ice_ufrag, md->ice_pwd)) {
844 if (ice_restarted == FALSE) {
845 ice_session_restart(call->ice_session);
846 ice_restarted = TRUE;
848 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
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);
853 if (cl && (stream->ice_pwd[0] != '\0') && (stream->ice_ufrag[0] != '\0')) {
854 if (ice_check_list_remote_credentials_changed(cl, stream->ice_ufrag, stream->ice_pwd)) {
855 if (ice_restarted == FALSE) {
856 ice_session_restart(call->ice_session);
857 ice_restarted = TRUE;
859 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
865 /* Create ICE check lists if needed and parse ICE attributes. */
866 for (i = 0; i < md->nstreams; i++) {
867 const SalStreamDescription *stream = &md->streams[i];
868 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
870 cl = ice_check_list_new();
871 ice_session_add_check_list(call->ice_session, cl);
872 switch (stream->type) {
874 if (call->audiostream != NULL) call->audiostream->ice_check_list = cl;
877 if (call->videostream != NULL) call->videostream->ice_check_list = cl;
883 if (stream->ice_mismatch == TRUE) {
884 ice_check_list_set_state(cl, ICL_Failed);
885 } else if (stream->rtp_port == 0) {
886 ice_session_remove_check_list(call->ice_session, cl);
888 if ((stream->ice_pwd[0] != '\0') && (stream->ice_ufrag[0] != '\0'))
889 ice_check_list_set_remote_credentials(cl, stream->ice_ufrag, stream->ice_pwd);
890 for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES; j++) {
891 const SalIceCandidate *candidate = &stream->ice_candidates[j];
892 bool_t default_candidate = FALSE;
893 const char *addr = NULL;
895 if (candidate->addr[0] == '\0') break;
896 if ((candidate->componentID == 0) || (candidate->componentID > 2)) continue;
897 get_default_addr_and_port(candidate->componentID, md, stream, &addr, &port);
898 if (addr && (candidate->port == port) && (strlen(candidate->addr) == strlen(addr)) && (strcmp(candidate->addr, addr) == 0))
899 default_candidate = TRUE;
900 ice_add_remote_candidate(cl, candidate->type, candidate->addr, candidate->port, candidate->componentID,
901 candidate->priority, candidate->foundation, default_candidate);
903 if (ice_restarted == FALSE) {
904 bool_t losing_pairs_added = FALSE;
905 for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES; j++) {
906 const SalIceRemoteCandidate *candidate = &stream->ice_remote_candidates[j];
907 const char *addr = NULL;
909 int componentID = j + 1;
910 if (candidate->addr[0] == '\0') break;
911 get_default_addr_and_port(componentID, md, stream, &addr, &port);
913 /* If we receive a re-invite and we finished ICE processing on our side, use the candidates given by the remote. */
914 ice_check_list_unselect_valid_pairs(cl);
916 ice_add_losing_pair(cl, j + 1, candidate->addr, candidate->port, addr, port);
917 losing_pairs_added = TRUE;
919 if (losing_pairs_added == TRUE) ice_check_list_check_completed(cl);
923 for (i = ice_session_nb_check_lists(call->ice_session); i > md->nstreams; i--) {
924 ice_session_remove_check_list(call->ice_session, ice_session_check_list(call->ice_session, i - 1));
926 ice_session_check_mismatch(call->ice_session);
928 /* Response from remote does not contain mandatory ICE attributes, delete the session. */
929 linphone_call_delete_ice_session(call);
932 if (ice_session_nb_check_lists(call->ice_session) == 0) {
933 linphone_call_delete_ice_session(call);
937 bool_t linphone_core_media_description_contains_video_stream(const SalMediaDescription *md)
941 for (i = 0; i < md->nstreams; i++) {
942 if ((md->streams[i].type == SalVideo) && (md->streams[i].rtp_port != 0))
948 LinphoneCall * is_a_linphone_call(void *user_pointer){
949 LinphoneCall *call=(LinphoneCall*)user_pointer;
950 if (call==NULL) return NULL;
951 return call->magic==linphone_call_magic ? call : NULL;
954 LinphoneProxyConfig * is_a_linphone_proxy_config(void *user_pointer){
955 LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)user_pointer;
956 if (cfg==NULL) return NULL;
957 return cfg->magic==linphone_proxy_config_magic ? cfg : NULL;
960 unsigned int linphone_core_get_audio_features(LinphoneCore *lc){
962 const char *features=lp_config_get_string(lc->config,"sound","features",NULL);
967 strncpy(tmp,features,sizeof(tmp)-1);
968 for(p=tmp;*p!='\0';p++){
969 if (*p==' ') continue;
973 ms_message("Found audio feature %s",name);
974 if (strcasecmp(name,"PLC")==0) ret|=AUDIO_STREAM_FEATURE_PLC;
975 else if (strcasecmp(name,"EC")==0) ret|=AUDIO_STREAM_FEATURE_EC;
976 else if (strcasecmp(name,"EQUALIZER")==0) ret|=AUDIO_STREAM_FEATURE_EQUALIZER;
977 else if (strcasecmp(name,"VOL_SND")==0) ret|=AUDIO_STREAM_FEATURE_VOL_SND;
978 else if (strcasecmp(name,"VOL_RCV")==0) ret|=AUDIO_STREAM_FEATURE_VOL_RCV;
979 else if (strcasecmp(name,"DTMF")==0) ret|=AUDIO_STREAM_FEATURE_DTMF;
980 else if (strcasecmp(name,"DTMF_ECHO")==0) ret|=AUDIO_STREAM_FEATURE_DTMF_ECHO;
981 else if (strcasecmp(name,"ALL")==0) ret|=AUDIO_STREAM_FEATURE_ALL;
982 else if (strcasecmp(name,"NONE")==0) ret=0;
983 else ms_error("Unsupported audio feature %s requested in config file.",name);
987 }else ret=AUDIO_STREAM_FEATURE_ALL;
992 #ifdef HAVE_GETIFADDRS
995 static int get_local_ip_with_getifaddrs(int type, char *address, int size)
998 struct ifaddrs *ifpstart;
1001 if (getifaddrs(&ifpstart) < 0) {
1005 #define UP_FLAG IFF_UP /* interface is up */
1007 #define UP_FLAG IFF_RUNNING /* resources allocated */
1010 for (ifp = ifpstart; ifp != NULL; ifp = ifp->ifa_next) {
1011 if (ifp->ifa_addr && ifp->ifa_addr->sa_family == type
1012 && (ifp->ifa_flags & UP_FLAG) && !(ifp->ifa_flags & IFF_LOOPBACK))
1014 getnameinfo(ifp->ifa_addr,
1015 (type == AF_INET6) ?
1016 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in),
1017 address, size, NULL, 0, NI_NUMERICHOST);
1018 if (strchr(address, '%') == NULL) { /*avoid ipv6 link-local addresses */
1019 /*ms_message("getifaddrs() found %s",address);*/
1025 freeifaddrs(ifpstart);
1031 static int get_local_ip_for_with_connect(int type, const char *dest, char *result){
1033 struct addrinfo hints;
1034 struct addrinfo *res=NULL;
1035 struct sockaddr_storage addr;
1036 struct sockaddr *p_addr=(struct sockaddr*)&addr;
1040 memset(&hints,0,sizeof(hints));
1041 hints.ai_family=(type==AF_INET6) ? PF_INET6 : PF_INET;
1042 hints.ai_socktype=SOCK_DGRAM;
1043 /*hints.ai_flags=AI_NUMERICHOST|AI_CANONNAME;*/
1044 err=getaddrinfo(dest,"5060",&hints,&res);
1046 ms_error("getaddrinfo() error: %s",gai_strerror(err));
1050 ms_error("bug: getaddrinfo returned nothing.");
1053 sock=socket(res->ai_family,SOCK_DGRAM,0);
1055 err=setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(SOCKET_OPTION_VALUE)&tmp,sizeof(int));
1057 ms_warning("Error in setsockopt: %s",strerror(errno));
1059 err=connect(sock,res->ai_addr,res->ai_addrlen);
1061 ms_error("Error in connect: %s",strerror(errno));
1069 err=getsockname(sock,(struct sockaddr*)&addr,&s);
1071 ms_error("Error in getsockname: %s",strerror(errno));
1075 if (p_addr->sa_family==AF_INET){
1076 struct sockaddr_in *p_sin=(struct sockaddr_in*)p_addr;
1077 if (p_sin->sin_addr.s_addr==0){
1082 err=getnameinfo((struct sockaddr *)&addr,s,result,LINPHONE_IPADDR_SIZE,NULL,0,NI_NUMERICHOST);
1084 ms_error("getnameinfo error: %s",strerror(errno));
1087 ms_message("Local interface to reach %s is %s.",dest,result);
1091 int linphone_core_get_local_ip_for(int type, const char *dest, char *result){
1092 strcpy(result,type==AF_INET ? "127.0.0.1" : "::1");
1093 #ifdef HAVE_GETIFADDRS
1095 /*we use getifaddrs for lookup of default interface */
1098 found_ifs=get_local_ip_with_getifaddrs(type,result,LINPHONE_IPADDR_SIZE);
1101 }else if (found_ifs<=0){
1102 /*absolutely no network on this machine */
1107 /*else use connect to find the best local ip address */
1109 dest="87.98.157.38"; /*a public IP address*/
1110 else dest="2a00:1450:8002::68";
1111 return get_local_ip_for_with_connect(type,dest,result);
1119 void _linphone_core_configure_resolver(){
1120 /*bionic declares _res but does not define nor export it !!*/
1122 /*timeout and attempts are the same as retrans and retry, but are android specific names.*/
1123 setenv("RES_OPTIONS","timeout:2 attempts:2 retrans:2 retry:2",1);
1126 _res.retrans=2; /*retransmit every two seconds*/
1127 _res.retry=2; /*only two times per DNS server*/
1133 void _linphone_core_configure_resolver(){