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Send ZRTP hello hash in SIP SDP.

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This commit is contained in:
Guillaume Beraudo 2013-03-18 15:58:05 +01:00
parent 2048bac55a
commit 71f31347fc
7 changed files with 69 additions and 16 deletions
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41
coreapi/linphonecall.c
View file

@ -254,6 +254,14 @@ void linphone_call_make_local_media_description(LinphoneCore *lc, LinphoneCall *
l=ms_list_append(l,pt);
md->streams[0].payloads=l;
// if ZRTP is enabled, put the hello hash into the audiostream's desc
if (call->audiostream && call->audiostream->ms.zrtp_context!=NULL){
ortp_zrtp_get_hello_hash(call->audiostream->ms.zrtp_context,
md->streams[0].zrtp_hello_hash,
sizeof(md->streams[0].zrtp_hello_hash));
ms_message("Audio stream zrtp hash: %s", md->streams[0].zrtp_hello_hash);
}
if (call->params.has_video){
md->n_active_streams++;
md->streams[1].rtp_port=call->video_port;
@ -262,6 +270,13 @@ void linphone_call_make_local_media_description(LinphoneCore *lc, LinphoneCall *
md->streams[1].type=SalVideo;
l=make_codec_list(lc,lc->codecs_conf.video_codecs,0,NULL,-1);
md->streams[1].payloads=l;
// if ZRTP is enabled, put the hello hash into the audiostream's desc
if (call->videostream->ms.zrtp_context!=NULL){
ortp_zrtp_get_hello_hash(call->videostream->ms.zrtp_context,
md->streams[1].zrtp_hello_hash,
sizeof(md->streams[1].zrtp_hello_hash));
ms_message("Video stream zrtp hash: %s", md->streams[1].zrtp_hello_hash);
}
}
if (md->n_total_streams < md->n_active_streams)
md->n_total_streams = md->n_active_streams;
@ -1294,6 +1309,20 @@ void linphone_call_init_video_stream(LinphoneCall *call){
void linphone_call_init_media_streams(LinphoneCall *call){
linphone_call_init_audio_stream(call);
linphone_call_init_video_stream(call);
// moved from linphone_call_start_media_streams, because ZRTP needs to be
// at least partially initialized so that the SDP can contain 'zrtp-hash'
if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
OrtpZrtpParams params;
/*will be set later when zrtp is activated*/
call->current_params.media_encryption=LinphoneMediaEncryptionNone;
params.zid_file=call->core->zrtp_secrets_cache;
audio_stream_enable_zrtp(call->audiostream,&params);
} else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
}
}
@ -1736,16 +1765,10 @@ void linphone_call_start_media_streams(LinphoneCall *call, bool_t all_inputs_mut
call->playing_ringbacktone=send_ringbacktone;
call->up_bw=linphone_core_get_upload_bandwidth(lc);
// ZRTP was initialized in linphone_call_init_media_streams with a
// partially iniitalized RtpSession, and now needs to get an update
if (call->params.media_encryption==LinphoneMediaEncryptionZRTP) {
OrtpZrtpParams params;
/*will be set later when zrtp is activated*/
call->current_params.media_encryption=LinphoneMediaEncryptionNone;
params.zid_file=lc->zrtp_secrets_cache;
audio_stream_enable_zrtp(call->audiostream,&params);
}else if (call->params.media_encryption==LinphoneMediaEncryptionSRTP){
call->current_params.media_encryption=linphone_call_are_all_streams_encrypted(call) ?
LinphoneMediaEncryptionSRTP : LinphoneMediaEncryptionNone;
ortp_zrtp_start_engine(call->audiostream->ms.zrtp_context,call->audiostream->ms.session);
}
/*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again

8
coreapi/linphonecore.c
View file

@ -3125,8 +3125,14 @@ int linphone_core_accept_call_with_params(LinphoneCore *lc, LinphoneCall *call,
sal_call_set_local_media_description(call->op,call->localdesc);
}
if (call->audiostream==NULL)
if (call->audiostream==NULL){
linphone_call_init_media_streams(call);
// the local media description must be regenerated after the audiostream
// is initialized, otherwise the ZRTP hello hash will not be available
linphone_call_make_local_media_description(lc,call);
sal_call_set_local_media_description(call->op,call->localdesc);
}
if (!was_ringing && call->audiostream->ms.ticker==NULL){
audio_stream_prepare_sound(call->audiostream,lc->sound_conf.play_sndcard,lc->sound_conf.capt_sndcard);
}

1
coreapi/offeranswer.c
View file

@ -261,6 +261,7 @@ static void initiate_incoming(const SalStreamDescription *local_cap,
result->ice_completed = local_cap->ice_completed;
memcpy(result->ice_candidates, local_cap->ice_candidates, sizeof(result->ice_candidates));
memcpy(result->ice_remote_candidates, local_cap->ice_remote_candidates, sizeof(result->ice_remote_candidates));
memcpy(result->zrtp_hello_hash,local_cap->zrtp_hello_hash, sizeof(result->zrtp_hello_hash));
}
/**

3
coreapi/sal.h
View file

@ -140,7 +140,7 @@ typedef struct SalIceRemoteCandidate {
} SalIceRemoteCandidate;
#define SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES 2
#define SAL_MEDIA_DESCRIPTION_MAX_ZRTP_HELLO_HASH 128
#define SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN 256
#define SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN 256
@ -172,6 +172,7 @@ typedef struct SalStreamDescription{
SalIceRemoteCandidate ice_remote_candidates[SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES];
char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
char zrtp_hello_hash[SAL_MEDIA_DESCRIPTION_MAX_ZRTP_HELLO_HASH];
bool_t ice_mismatch;
bool_t ice_completed;
} SalStreamDescription;

28
coreapi/sal_eXosip2_sdp.c
View file

@ -108,6 +108,17 @@ static int _sdp_message_get_a_ptime(sdp_message_t *sdp, int mline){
return 0;
}
static char * _sdp_message_get_a_zrtp_hash(sdp_message_t *sdp, int mline){
int i;
sdp_attribute_t *attr;
for (i=0;(attr=sdp_message_attribute_get(sdp,mline,i))!=NULL;i++){
if (keywordcmp("zrtp-hash",attr->a_att_field)==0){
return attr->a_att_value;
}
}
return NULL;
}
static int _sdp_message_get_mline_dir(sdp_message_t *sdp, int mline){
int i;
sdp_attribute_t *attr;
@ -337,6 +348,11 @@ static void add_line(sdp_message_t *msg, int lineno, const SalStreamDescription
int_2char(desc->bandwidth));
if (desc->ptime>0) sdp_message_a_attribute_add(msg,lineno,osip_strdup("ptime"),
int_2char(desc->ptime));
// if the ZRTP hello hash is available, create an a attribute for it
if (desc->zrtp_hello_hash[0])
sdp_message_a_attribute_add(msg,lineno,osip_strdup("zrtp-hash"), osip_strdup(desc->zrtp_hello_hash));
strip_well_known_rtpmaps=ms_list_size(desc->payloads)>5;
if (desc->payloads){
for(elem=desc->payloads;elem!=NULL;elem=elem->next){
@ -433,7 +449,7 @@ static int payload_type_fill_from_rtpmap(PayloadType *pt, const char *rtpmap){
int sdp_to_media_description(sdp_message_t *msg, SalMediaDescription *desc){
int i,j;
const char *mtype,*proto,*rtp_port,*rtp_addr,*number;
const char *mtype,*proto,*rtp_port,*rtp_addr,*number,*zrtp_info;
const char *sess;
sdp_bandwidth_t *sbw=NULL;
sdp_attribute_t *attr;
@ -490,7 +506,12 @@ int sdp_to_media_description(sdp_message_t *msg, SalMediaDescription *desc){
stream->rtp_port=atoi(rtp_port);
if (stream->rtp_port > 0)
desc->n_active_streams++;
// if the SDP contains a zrtp-hash, add it to the StreamDesc
zrtp_info = _sdp_message_get_a_zrtp_hash(msg, i);
if (zrtp_info != NULL)
strncpy(stream->zrtp_hello_hash, zrtp_info, sizeof(stream->zrtp_hello_hash));
stream->ptime=_sdp_message_get_a_ptime(msg,i);
if (strcasecmp("audio", mtype) == 0){
stream->type=SalAudio;
@ -528,7 +549,8 @@ int sdp_to_media_description(sdp_message_t *msg, SalMediaDescription *desc){
for (j = 0; ((attr = sdp_message_attribute_get(msg, i, j)) != NULL); j++) {
if ((keywordcmp("rtcp", attr->a_att_field) == 0) && (attr->a_att_value != NULL)) {
char tmp[256];
int nb = sscanf(attr->a_att_value, "%d IN IP4 %s", &stream->rtcp_port, tmp);
// added bounds check
int nb = sscanf(attr->a_att_value, "%d IN IP4 %256s", &stream->rtcp_port, tmp);
if (nb == 1) {
/* SDP rtcp attribute only contains the port */
} else if (nb == 2) {

2
mediastreamer2

@ -1 +1 @@
Subproject commit 07824fcf3879d265c59beaf970d833b5859f3691
Subproject commit 45c9c65168a9912bd2aa97344b396771ff1cdaf0

2
oRTP

@ -1 +1 @@
Subproject commit 20b527144f9850dd9065d96db7a20244e8a8b227
Subproject commit c702c0ea0e66bbe1f27c79690003d9748b01560f