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 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;
693 call->stats[LINPHONE_CALL_STATS_AUDIO].ice_state = LinphoneIceStateFailed;
694 if (call->params.has_video && (video_check_list != NULL)) {
695 call->stats[LINPHONE_CALL_STATS_VIDEO].ice_state = LinphoneIceStateFailed;
700 void linphone_core_update_local_media_description_from_ice(SalMediaDescription *desc, IceSession *session)
702 const char *rtp_addr, *rtcp_addr;
703 IceSessionState session_state = ice_session_state(session);
708 if (session_state == IS_Completed) {
709 desc->ice_completed = TRUE;
710 result = ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, 0), &rtp_addr, NULL, NULL, NULL);
711 if (result == TRUE) {
712 strncpy(desc->addr, rtp_addr, sizeof(desc->addr));
714 ms_warning("If ICE has completed successfully, rtp_addr should be set!");
718 desc->ice_completed = FALSE;
720 strncpy(desc->ice_pwd, ice_session_local_pwd(session), sizeof(desc->ice_pwd));
721 strncpy(desc->ice_ufrag, ice_session_local_ufrag(session), sizeof(desc->ice_ufrag));
722 for (i = 0; i < desc->nstreams; i++) {
723 SalStreamDescription *stream = &desc->streams[i];
724 IceCheckList *cl = ice_session_check_list(session, i);
726 if (cl == NULL) continue;
727 if (ice_check_list_state(cl) == ICL_Completed) {
728 stream->ice_completed = TRUE;
729 result = ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
731 stream->ice_completed = FALSE;
732 result = ice_check_list_default_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
734 if (result == TRUE) {
735 strncpy(stream->rtp_addr, rtp_addr, sizeof(stream->rtp_addr));
736 strncpy(stream->rtcp_addr, rtcp_addr, sizeof(stream->rtcp_addr));
738 memset(stream->rtp_addr, 0, sizeof(stream->rtp_addr));
739 memset(stream->rtcp_addr, 0, sizeof(stream->rtcp_addr));
741 if ((strlen(ice_check_list_local_pwd(cl)) != strlen(desc->ice_pwd)) || (strcmp(ice_check_list_local_pwd(cl), desc->ice_pwd)))
742 strncpy(stream->ice_pwd, ice_check_list_local_pwd(cl), sizeof(stream->ice_pwd));
744 memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
745 if ((strlen(ice_check_list_local_ufrag(cl)) != strlen(desc->ice_ufrag)) || (strcmp(ice_check_list_local_ufrag(cl), desc->ice_ufrag)))
746 strncpy(stream->ice_ufrag, ice_check_list_local_ufrag(cl), sizeof(stream->ice_ufrag));
748 memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
749 stream->ice_mismatch = ice_check_list_is_mismatch(cl);
750 if ((ice_check_list_state(cl) == ICL_Running) || (ice_check_list_state(cl) == ICL_Completed)) {
751 memset(stream->ice_candidates, 0, sizeof(stream->ice_candidates));
752 for (j = 0; j < MIN(ms_list_size(cl->local_candidates), SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES); j++) {
753 SalIceCandidate *sal_candidate = &stream->ice_candidates[nb_candidates];
754 IceCandidate *ice_candidate = ms_list_nth_data(cl->local_candidates, j);
755 const char *default_addr = NULL;
756 int default_port = 0;
757 if (ice_candidate->componentID == 1) {
758 default_addr = stream->rtp_addr;
759 default_port = stream->rtp_port;
760 } else if (ice_candidate->componentID == 2) {
761 default_addr = stream->rtcp_addr;
762 default_port = stream->rtcp_port;
764 if (default_addr[0] == '\0') default_addr = desc->addr;
765 /* 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. */
766 if ((ice_check_list_state(cl) == ICL_Completed)
767 && !((ice_candidate->taddr.port == default_port) && (strlen(ice_candidate->taddr.ip) == strlen(default_addr)) && (strcmp(ice_candidate->taddr.ip, default_addr) == 0)))
769 strncpy(sal_candidate->foundation, ice_candidate->foundation, sizeof(sal_candidate->foundation));
770 sal_candidate->componentID = ice_candidate->componentID;
771 sal_candidate->priority = ice_candidate->priority;
772 strncpy(sal_candidate->type, ice_candidate_type(ice_candidate), sizeof(sal_candidate->type));
773 strncpy(sal_candidate->addr, ice_candidate->taddr.ip, sizeof(sal_candidate->addr));
774 sal_candidate->port = ice_candidate->taddr.port;
775 if ((ice_candidate->base != NULL) && (ice_candidate->base != ice_candidate)) {
776 strncpy(sal_candidate->raddr, ice_candidate->base->taddr.ip, sizeof(sal_candidate->raddr));
777 sal_candidate->rport = ice_candidate->base->taddr.port;
782 if ((ice_check_list_state(cl) == ICL_Completed) && (ice_session_role(session) == IR_Controlling)) {
783 int rtp_port, rtcp_port;
784 memset(stream->ice_remote_candidates, 0, sizeof(stream->ice_remote_candidates));
785 ice_check_list_selected_valid_remote_candidate(cl, &rtp_addr, &rtp_port, &rtcp_addr, &rtcp_port);
786 if ((rtp_addr != NULL) && (rtcp_addr != NULL)) {
787 strncpy(stream->ice_remote_candidates[0].addr, rtp_addr, sizeof(stream->ice_remote_candidates[0].addr));
788 stream->ice_remote_candidates[0].port = rtp_port;
789 strncpy(stream->ice_remote_candidates[1].addr, rtcp_addr, sizeof(stream->ice_remote_candidates[1].addr));
790 stream->ice_remote_candidates[1].port = rtcp_port;
792 ms_error("ice: Selected valid remote candidates should be present if the check list is in the Completed state");
798 static void get_default_addr_and_port(uint16_t componentID, const SalMediaDescription *md, const SalStreamDescription *stream, const char **addr, int *port)
800 if (componentID == 1) {
801 *addr = stream->rtp_addr;
802 *port = stream->rtp_port;
803 } else if (componentID == 2) {
804 *addr = stream->rtcp_addr;
805 *port = stream->rtcp_port;
807 if ((*addr)[0] == '\0') *addr = md->addr;
810 void linphone_core_update_ice_from_remote_media_description(LinphoneCall *call, const SalMediaDescription *md)
812 bool_t ice_restarted = FALSE;
814 if ((md->ice_pwd[0] != '\0') && (md->ice_ufrag[0] != '\0')) {
817 /* Check for ICE restart and set remote credentials. */
818 if ((strcmp(md->addr, "0.0.0.0") == 0) || (strcmp(md->addr, "::0") == 0)) {
819 ice_session_restart(call->ice_session);
820 ice_restarted = TRUE;
822 for (i = 0; i < md->nstreams; i++) {
823 const SalStreamDescription *stream = &md->streams[i];
824 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
825 if (cl && (strcmp(stream->rtp_addr, "0.0.0.0") == 0)) {
826 ice_session_restart(call->ice_session);
827 ice_restarted = TRUE;
832 if ((ice_session_remote_ufrag(call->ice_session) == NULL) && (ice_session_remote_pwd(call->ice_session) == NULL)) {
833 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
834 } else if (ice_session_remote_credentials_changed(call->ice_session, md->ice_ufrag, md->ice_pwd)) {
835 if (ice_restarted == FALSE) {
836 ice_session_restart(call->ice_session);
837 ice_restarted = TRUE;
839 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
841 for (i = 0; i < md->nstreams; i++) {
842 const SalStreamDescription *stream = &md->streams[i];
843 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
844 if (cl && (stream->ice_pwd[0] != '\0') && (stream->ice_ufrag[0] != '\0')) {
845 if (ice_check_list_remote_credentials_changed(cl, stream->ice_ufrag, stream->ice_pwd)) {
846 if (ice_restarted == FALSE) {
847 ice_session_restart(call->ice_session);
848 ice_restarted = TRUE;
850 ice_session_set_remote_credentials(call->ice_session, md->ice_ufrag, md->ice_pwd);
856 /* Create ICE check lists if needed and parse ICE attributes. */
857 for (i = 0; i < md->nstreams; i++) {
858 const SalStreamDescription *stream = &md->streams[i];
859 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
861 cl = ice_check_list_new();
862 ice_session_add_check_list(call->ice_session, cl);
863 switch (stream->type) {
865 if (call->audiostream != NULL) call->audiostream->ice_check_list = cl;
868 if (call->videostream != NULL) call->videostream->ice_check_list = cl;
874 if ((stream->ice_mismatch == TRUE) || (stream->rtp_port == 0)) {
875 ice_check_list_set_state(cl, ICL_Failed);
877 if ((stream->ice_pwd[0] != '\0') && (stream->ice_ufrag[0] != '\0'))
878 ice_check_list_set_remote_credentials(cl, stream->ice_ufrag, stream->ice_pwd);
879 for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES; j++) {
880 const SalIceCandidate *candidate = &stream->ice_candidates[j];
881 bool_t default_candidate = FALSE;
882 const char *addr = NULL;
884 if (candidate->addr[0] == '\0') break;
885 if ((candidate->componentID == 0) || (candidate->componentID > 2)) continue;
886 get_default_addr_and_port(candidate->componentID, md, stream, &addr, &port);
887 if (addr && (candidate->port == port) && (strlen(candidate->addr) == strlen(addr)) && (strcmp(candidate->addr, addr) == 0))
888 default_candidate = TRUE;
889 ice_add_remote_candidate(cl, candidate->type, candidate->addr, candidate->port, candidate->componentID,
890 candidate->priority, candidate->foundation, default_candidate);
892 if (ice_restarted == FALSE) {
893 bool_t losing_pairs_added = FALSE;
894 for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES; j++) {
895 const SalIceRemoteCandidate *candidate = &stream->ice_remote_candidates[j];
896 const char *addr = NULL;
898 int componentID = j + 1;
899 if (candidate->addr[0] == '\0') break;
900 get_default_addr_and_port(componentID, md, stream, &addr, &port);
901 ice_add_losing_pair(cl, j + 1, candidate->addr, candidate->port, addr, port);
902 losing_pairs_added = TRUE;
904 if (losing_pairs_added == TRUE) ice_check_list_check_completed(cl);
908 for (i = ice_session_nb_check_lists(call->ice_session); i > md->nstreams; i--) {
909 ice_session_remove_check_list(call->ice_session, ice_session_check_list(call->ice_session, i - 1));
911 ice_session_check_mismatch(call->ice_session);
913 /* Response from remote does not contain mandatory ICE attributes, delete the session. */
914 linphone_call_delete_ice_session(call);
917 if (ice_session_nb_check_lists(call->ice_session) == 0) {
918 linphone_call_delete_ice_session(call);
922 bool_t linphone_core_media_description_contains_video_stream(const SalMediaDescription *md)
926 for (i = 0; i < md->nstreams; i++) {
927 if ((md->streams[i].type == SalVideo) && (md->streams[i].rtp_port != 0))
933 void linphone_core_deactivate_ice_for_deactivated_media_streams(LinphoneCall *call, const SalMediaDescription *md)
936 for (i = 0; i < md->nstreams; i++) {
937 IceCheckList *cl = ice_session_check_list(call->ice_session, i);
938 if (cl && (md->streams[i].rtp_port == 0)) {
939 if (ice_check_list_state(cl) != ICL_Completed) ice_check_list_set_state(cl, ICL_Failed);
944 LinphoneCall * is_a_linphone_call(void *user_pointer){
945 LinphoneCall *call=(LinphoneCall*)user_pointer;
946 if (call==NULL) return NULL;
947 return call->magic==linphone_call_magic ? call : NULL;
950 LinphoneProxyConfig * is_a_linphone_proxy_config(void *user_pointer){
951 LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)user_pointer;
952 if (cfg==NULL) return NULL;
953 return cfg->magic==linphone_proxy_config_magic ? cfg : NULL;
956 unsigned int linphone_core_get_audio_features(LinphoneCore *lc){
958 const char *features=lp_config_get_string(lc->config,"sound","features",NULL);
963 strncpy(tmp,features,sizeof(tmp)-1);
964 for(p=tmp;*p!='\0';p++){
965 if (*p==' ') continue;
969 ms_message("Found audio feature %s",name);
970 if (strcasecmp(name,"PLC")==0) ret|=AUDIO_STREAM_FEATURE_PLC;
971 else if (strcasecmp(name,"EC")==0) ret|=AUDIO_STREAM_FEATURE_EC;
972 else if (strcasecmp(name,"EQUALIZER")==0) ret|=AUDIO_STREAM_FEATURE_EQUALIZER;
973 else if (strcasecmp(name,"VOL_SND")==0) ret|=AUDIO_STREAM_FEATURE_VOL_SND;
974 else if (strcasecmp(name,"VOL_RCV")==0) ret|=AUDIO_STREAM_FEATURE_VOL_RCV;
975 else if (strcasecmp(name,"DTMF")==0) ret|=AUDIO_STREAM_FEATURE_DTMF;
976 else if (strcasecmp(name,"DTMF_ECHO")==0) ret|=AUDIO_STREAM_FEATURE_DTMF_ECHO;
977 else if (strcasecmp(name,"ALL")==0) ret|=AUDIO_STREAM_FEATURE_ALL;
978 else if (strcasecmp(name,"NONE")==0) ret=0;
979 else ms_error("Unsupported audio feature %s requested in config file.",name);
983 }else ret=AUDIO_STREAM_FEATURE_ALL;
988 #ifdef HAVE_GETIFADDRS
991 static int get_local_ip_with_getifaddrs(int type, char *address, int size)
994 struct ifaddrs *ifpstart;
997 if (getifaddrs(&ifpstart) < 0) {
1001 #define UP_FLAG IFF_UP /* interface is up */
1003 #define UP_FLAG IFF_RUNNING /* resources allocated */
1006 for (ifp = ifpstart; ifp != NULL; ifp = ifp->ifa_next) {
1007 if (ifp->ifa_addr && ifp->ifa_addr->sa_family == type
1008 && (ifp->ifa_flags & UP_FLAG) && !(ifp->ifa_flags & IFF_LOOPBACK))
1010 getnameinfo(ifp->ifa_addr,
1011 (type == AF_INET6) ?
1012 sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in),
1013 address, size, NULL, 0, NI_NUMERICHOST);
1014 if (strchr(address, '%') == NULL) { /*avoid ipv6 link-local addresses */
1015 /*ms_message("getifaddrs() found %s",address);*/
1021 freeifaddrs(ifpstart);
1027 static int get_local_ip_for_with_connect(int type, const char *dest, char *result){
1029 struct addrinfo hints;
1030 struct addrinfo *res=NULL;
1031 struct sockaddr_storage addr;
1032 struct sockaddr *p_addr=(struct sockaddr*)&addr;
1036 memset(&hints,0,sizeof(hints));
1037 hints.ai_family=(type==AF_INET6) ? PF_INET6 : PF_INET;
1038 hints.ai_socktype=SOCK_DGRAM;
1039 /*hints.ai_flags=AI_NUMERICHOST|AI_CANONNAME;*/
1040 err=getaddrinfo(dest,"5060",&hints,&res);
1042 ms_error("getaddrinfo() error: %s",gai_strerror(err));
1046 ms_error("bug: getaddrinfo returned nothing.");
1049 sock=socket(res->ai_family,SOCK_DGRAM,0);
1051 err=setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(SOCKET_OPTION_VALUE)&tmp,sizeof(int));
1053 ms_warning("Error in setsockopt: %s",strerror(errno));
1055 err=connect(sock,res->ai_addr,res->ai_addrlen);
1057 ms_error("Error in connect: %s",strerror(errno));
1065 err=getsockname(sock,(struct sockaddr*)&addr,&s);
1067 ms_error("Error in getsockname: %s",strerror(errno));
1071 if (p_addr->sa_family==AF_INET){
1072 struct sockaddr_in *p_sin=(struct sockaddr_in*)p_addr;
1073 if (p_sin->sin_addr.s_addr==0){
1078 err=getnameinfo((struct sockaddr *)&addr,s,result,LINPHONE_IPADDR_SIZE,NULL,0,NI_NUMERICHOST);
1080 ms_error("getnameinfo error: %s",strerror(errno));
1083 ms_message("Local interface to reach %s is %s.",dest,result);
1087 int linphone_core_get_local_ip_for(int type, const char *dest, char *result){
1088 strcpy(result,type==AF_INET ? "127.0.0.1" : "::1");
1089 #ifdef HAVE_GETIFADDRS
1091 /*we use getifaddrs for lookup of default interface */
1094 found_ifs=get_local_ip_with_getifaddrs(type,result,LINPHONE_IPADDR_SIZE);
1097 }else if (found_ifs<=0){
1098 /*absolutely no network on this machine */
1103 /*else use connect to find the best local ip address */
1105 dest="87.98.157.38"; /*a public IP address*/
1106 else dest="2a00:1450:8002::68";
1107 return get_local_ip_for_with_connect(type,dest,result);
1115 void _linphone_core_configure_resolver(){
1116 /*bionic declares _res but does not define nor export it !!*/
1118 /*timeout and attempts are the same as retrans and retry, but are android specific names.*/
1119 setenv("RES_OPTIONS","timeout:2 attempts:2 retrans:2 retry:2",1);
1122 _res.retrans=2; /*retransmit every two seconds*/
1123 _res.retry=2; /*only two times per DNS server*/
1129 void _linphone_core_configure_resolver(){