Commit ca5f624b authored by Ghislain MARY's avatar Ghislain MARY
Browse files

Divide huge function in smaller blocks.

parent 362ad2e5
......@@ -251,28 +251,223 @@ belle_sdp_session_description_t * media_description_to_sdp ( const SalMediaDescr
}
static void sdp_parse_payload_types(belle_sdp_media_description_t *media_desc, SalStreamDescription *stream) {
PayloadType *pt;
belle_sip_list_t* mime_param_it=NULL;
belle_sdp_mime_parameter_t* mime_param;
belle_sip_list_t* mime_params=belle_sdp_media_description_build_mime_parameters ( media_desc );
for ( mime_param_it=mime_params
; mime_param_it!=NULL
; mime_param_it=mime_param_it->next ) {
mime_param=BELLE_SDP_MIME_PARAMETER ( mime_param_it->data )
pt=payload_type_new();
payload_type_set_number ( pt,belle_sdp_mime_parameter_get_media_format ( mime_param ) );
pt->clock_rate=belle_sdp_mime_parameter_get_rate ( mime_param );
pt->mime_type=ms_strdup ( belle_sdp_mime_parameter_get_type ( mime_param ) );
pt->channels=belle_sdp_mime_parameter_get_channel_count ( mime_param );
payload_type_set_send_fmtp ( pt,belle_sdp_mime_parameter_get_parameters ( mime_param ) );
stream->payloads=ms_list_append ( stream->payloads,pt );
stream->ptime=belle_sdp_mime_parameter_get_ptime ( mime_param );
ms_message ( "Found payload %s/%i fmtp=%s",pt->mime_type,pt->clock_rate,
pt->send_fmtp ? pt->send_fmtp : "" );
}
if ( mime_params ) belle_sip_list_free_with_data ( mime_params,belle_sip_object_unref );
}
static void sdp_parse_media_crypto_parameters(belle_sdp_media_description_t *media_desc, SalStreamDescription *stream) {
belle_sip_list_t *attribute_it;
const belle_sdp_attribute_t *attribute;
char tmp[256], tmp2[256];
int valid_count = 0;
int nb;
memset ( &stream->crypto, 0, sizeof ( stream->crypto ) );
for ( attribute_it=belle_sdp_media_description_get_attributes ( media_desc )
; valid_count < SAL_CRYPTO_ALGO_MAX && attribute_it!=NULL;
attribute_it=attribute_it->next ) {
attribute=BELLE_SDP_ATTRIBUTE ( attribute_it->data );
if ( keywordcmp ( "crypto",belle_sdp_attribute_get_name ( attribute ) ) ==0 && belle_sdp_attribute_get_value ( attribute ) !=NULL ) {
nb = sscanf ( belle_sdp_attribute_get_value ( attribute ), "%d %256s inline:%256s",
&stream->crypto[valid_count].tag,
tmp,
tmp2 );
ms_message ( "Found valid crypto line (tag:%d algo:'%s' key:'%s'",
stream->crypto[valid_count].tag,
tmp,
tmp2 );
if ( nb == 3 ) {
if ( keywordcmp ( "AES_CM_128_HMAC_SHA1_80",tmp ) == 0 )
stream->crypto[valid_count].algo = AES_128_SHA1_80;
else if ( keywordcmp ( "AES_CM_128_HMAC_SHA1_32",tmp ) == 0 )
stream->crypto[valid_count].algo = AES_128_SHA1_32;
else {
ms_warning ( "Failed to parse crypto-algo: '%s'", tmp );
stream->crypto[valid_count].algo = 0;
}
if ( stream->crypto[valid_count].algo ) {
strncpy ( stream->crypto[valid_count].master_key, tmp2, 41 );
stream->crypto[valid_count].master_key[40] = '\0';
ms_message ( "Found valid crypto line (tag:%d algo:'%s' key:'%s'",
stream->crypto[valid_count].tag,
tmp,
stream->crypto[valid_count].master_key );
valid_count++;
}
} else {
ms_warning ( "sdp has a strange a= line (%s) nb=%i",belle_sdp_attribute_get_value ( attribute ),nb );
}
}
}
ms_message ( "Found: %d valid crypto lines", valid_count );
}
static void sdp_parse_ice_media_parameters(belle_sdp_media_description_t *media_desc, SalStreamDescription *stream) {
belle_sip_list_t *attribute_it;
const belle_sdp_attribute_t *attribute;
const char *att_name;
const char *value;
int nb_ice_candidates = 0;
for (attribute_it = belle_sdp_media_description_get_attributes(media_desc); attribute_it != NULL; attribute_it=attribute_it->next) {
attribute=(belle_sdp_attribute_t*)attribute_it->data;
att_name = belle_sdp_attribute_get_name(attribute);
value = belle_sdp_attribute_get_value(attribute);
if ((keywordcmp("candidate", att_name) == 0) && (value != NULL)) {
SalIceCandidate *candidate = &stream->ice_candidates[nb_ice_candidates];
int nb = sscanf(value, "%s %u UDP %u %s %d typ %s raddr %s rport %d",
candidate->foundation, &candidate->componentID, &candidate->priority, candidate->addr, &candidate->port,
candidate->type, candidate->raddr, &candidate->rport);
if ((nb == 6) || (nb == 8)) nb_ice_candidates++;
else memset(candidate, 0, sizeof(*candidate));
} else if ((keywordcmp("remote-candidates", att_name) == 0) && (value != NULL)) {
SalIceRemoteCandidate candidate;
unsigned int componentID;
int offset;
const char *ptr = value;
const char *endptr = value + strlen(ptr);
while (3 == sscanf(ptr, "%u %s %u%n", &componentID, candidate.addr, &candidate.port, &offset)) {
if ((componentID > 0) && (componentID <= SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES)) {
SalIceRemoteCandidate *remote_candidate = &stream->ice_remote_candidates[componentID - 1];
strncpy(remote_candidate->addr, candidate.addr, sizeof(remote_candidate->addr));
remote_candidate->port = candidate.port;
}
ptr += offset;
if (ptr < endptr) {
if (ptr[offset] == ' ') ptr += 1;
} else break;
}
} else if ((keywordcmp("ice-ufrag", att_name) == 0) && (value != NULL)) {
strncpy(stream->ice_ufrag, value, sizeof(stream->ice_ufrag));
} else if ((keywordcmp("ice-pwd", att_name) == 0) && (value != NULL)) {
strncpy(stream->ice_pwd, value, sizeof(stream->ice_pwd));
} else if (keywordcmp("ice-mismatch", att_name) == 0) {
stream->ice_mismatch = TRUE;
}
}
}
static SalStreamDescription * sdp_to_stream_description(SalMediaDescription *md, belle_sdp_media_description_t *media_desc) {
SalStreamDescription *stream;
belle_sdp_connection_t* cnx;
belle_sdp_media_t* media;
const belle_sdp_attribute_t* attribute;
const char* value;
const char *mtype,*proto;
stream=&md->streams[md->n_total_streams];
media=belle_sdp_media_description_get_media ( media_desc );
memset ( stream,0,sizeof ( *stream ) );
proto = belle_sdp_media_get_protocol ( media );
stream->proto=SalProtoUnknown;
if ( proto ) {
if ( strcasecmp ( proto,"RTP/AVP" ) ==0 )
stream->proto=SalProtoRtpAvp;
else if ( strcasecmp ( proto,"RTP/SAVP" ) ==0 ) {
stream->proto=SalProtoRtpSavp;
}
}
if ( ( cnx=belle_sdp_media_description_get_connection ( media_desc ) ) && belle_sdp_connection_get_address ( cnx ) ) {
strncpy ( stream->rtp_addr,belle_sdp_connection_get_address ( cnx ),sizeof ( stream->rtp_addr ) );
}
stream->rtp_port=belle_sdp_media_get_media_port ( media );
if ( stream->rtp_port > 0 )
md->n_active_streams++;
mtype = belle_sdp_media_get_media_type ( media );
if ( strcasecmp ( "audio", mtype ) == 0 ) {
stream->type=SalAudio;
} else if ( strcasecmp ( "video", mtype ) == 0 ) {
stream->type=SalVideo;
} else {
stream->type=SalOther;
strncpy ( stream->typeother,mtype,sizeof ( stream->typeother )-1 );
}
if ( belle_sdp_media_description_get_bandwidth ( media_desc,"AS" ) >0 ) {
stream->bandwidth=belle_sdp_media_description_get_bandwidth ( media_desc,"AS" );
}
if ( belle_sdp_media_description_get_attribute ( media_desc,"sendrecv" ) ) {
stream->dir=SalStreamSendRecv;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"sendonly" ) ) {
stream->dir=SalStreamSendOnly;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"recvonly" ) ) {
stream->dir=SalStreamRecvOnly;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"inactive" ) ) {
stream->dir=SalStreamInactive;
} else {
stream->dir=md->dir; /*takes default value if not present*/
}
/* Get media payload types */
sdp_parse_payload_types(media_desc, stream);
/* Get media specific RTCP attribute */
stream->rtcp_port = stream->rtp_port + 1;
snprintf(stream->rtcp_addr, sizeof(stream->rtcp_addr), "%s", stream->rtp_addr);
attribute=belle_sdp_media_description_get_attribute(media_desc,"rtcp");
if (attribute && (value=belle_sdp_attribute_get_value(attribute))!=NULL){
char tmp[256];
int nb = sscanf(value, "%d IN IP4 %s", &stream->rtcp_port, tmp);
if (nb == 1) {
/* SDP rtcp attribute only contains the port */
} else if (nb == 2) {
strncpy(stream->rtcp_addr, tmp, sizeof(stream->rtcp_addr));
} else {
ms_warning("sdp has a strange a=rtcp line (%s) nb=%i", value, nb);
}
}
/* Read crypto lines if any */
if ( stream->proto == SalProtoRtpSavp ) {
sdp_parse_media_crypto_parameters(media_desc, stream);
}
/* Get ICE candidate attributes if any */
sdp_parse_ice_media_parameters(media_desc, stream);
md->n_total_streams++;
return stream;
}
int sdp_to_media_description ( belle_sdp_session_description_t *session_desc, SalMediaDescription *desc ) {
belle_sdp_connection_t* cnx;
belle_sip_list_t* media_desc_it;
belle_sdp_media_description_t* media_desc;
belle_sdp_session_name_t *sname;
const char *mtype,*proto;
SalStreamDescription *stream;
belle_sdp_media_t* media;
belle_sip_list_t* mime_params=NULL;
belle_sip_list_t* mime_param_it=NULL;
belle_sdp_mime_parameter_t* mime_param;
PayloadType *pt;
belle_sip_list_t* attribute_it;
const belle_sdp_attribute_t* attribute;
int valid_count = 0;
char tmp[256], tmp2[256];
int nb=0;
SalStreamDir stream_dir=SalStreamSendRecv;
const char* value;
desc->n_active_streams = 0;
desc->n_total_streams = 0;
desc->dir = SalStreamSendRecv;
if ( ( cnx=belle_sdp_session_description_get_connection ( session_desc ) ) && belle_sdp_connection_get_address ( cnx ) ) {
strncpy ( desc->addr,belle_sdp_connection_get_address ( cnx ),sizeof ( desc->addr ) );
......@@ -287,13 +482,13 @@ int sdp_to_media_description ( belle_sdp_session_description_t *session_desc, S
/*in some very rare case, session attribute may set stream dir*/
if ( belle_sdp_session_description_get_attribute ( session_desc,"sendrecv" ) ) {
stream_dir=SalStreamSendRecv;
desc->dir=SalStreamSendRecv;
} else if ( belle_sdp_session_description_get_attribute ( session_desc,"sendonly" ) ) {
stream_dir=SalStreamSendOnly;
desc->dir=SalStreamSendOnly;
} else if ( belle_sdp_session_description_get_attribute ( session_desc,"recvonly" ) ) {
stream_dir=SalStreamRecvOnly;
desc->dir=SalStreamRecvOnly;
} else if ( belle_sdp_session_description_get_attribute ( session_desc,"inactive" ) ) {
stream_dir=SalStreamInactive;
desc->dir=SalStreamInactive;
}
/* Get ICE remote ufrag and remote pwd, and ice_lite flag */
......@@ -309,189 +504,12 @@ int sdp_to_media_description ( belle_sdp_session_description_t *session_desc, S
for ( media_desc_it=belle_sdp_session_description_get_media_descriptions ( session_desc )
; media_desc_it!=NULL
; media_desc_it=media_desc_it->next ) {
int nb_ice_candidates=0;
if (desc->n_total_streams==SAL_MEDIA_DESCRIPTION_MAX_STREAMS){
ms_warning("Cannot convert mline at position [%i] from SDP to SalMediaDescription",desc->n_total_streams);
break;
}
media_desc=BELLE_SDP_MEDIA_DESCRIPTION ( media_desc_it->data );
stream=&desc->streams[desc->n_total_streams];
media=belle_sdp_media_description_get_media ( media_desc );
memset ( stream,0,sizeof ( *stream ) );
proto = belle_sdp_media_get_protocol ( media );
stream->proto=SalProtoUnknown;
if ( proto ) {
if ( strcasecmp ( proto,"RTP/AVP" ) ==0 )
stream->proto=SalProtoRtpAvp;
else if ( strcasecmp ( proto,"RTP/SAVP" ) ==0 ) {
stream->proto=SalProtoRtpSavp;
}
}
if ( ( cnx=belle_sdp_media_description_get_connection ( media_desc ) ) && belle_sdp_connection_get_address ( cnx ) ) {
strncpy ( stream->rtp_addr,belle_sdp_connection_get_address ( cnx ),sizeof ( stream->rtp_addr ) );
}
stream->rtp_port=belle_sdp_media_get_media_port ( media );
if ( stream->rtp_port > 0 )
desc->n_active_streams++;
mtype = belle_sdp_media_get_media_type ( media );
if ( strcasecmp ( "audio", mtype ) == 0 ) {
stream->type=SalAudio;
} else if ( strcasecmp ( "video", mtype ) == 0 ) {
stream->type=SalVideo;
} else {
stream->type=SalOther;
strncpy ( stream->typeother,mtype,sizeof ( stream->typeother )-1 );
}
if ( belle_sdp_media_description_get_bandwidth ( media_desc,"AS" ) >0 ) {
stream->bandwidth=belle_sdp_media_description_get_bandwidth ( media_desc,"AS" );
}
if ( belle_sdp_media_description_get_attribute ( media_desc,"sendrecv" ) ) {
stream->dir=SalStreamSendRecv;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"sendonly" ) ) {
stream->dir=SalStreamSendOnly;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"recvonly" ) ) {
stream->dir=SalStreamRecvOnly;
} else if ( belle_sdp_media_description_get_attribute ( media_desc,"inactive" ) ) {
stream->dir=SalStreamInactive;
} else {
stream->dir=stream_dir; /*takes default value if not present*/
}
/* for each payload type */
mime_params=belle_sdp_media_description_build_mime_parameters ( media_desc );
for ( mime_param_it=mime_params
; mime_param_it!=NULL
; mime_param_it=mime_param_it->next ) {
mime_param=BELLE_SDP_MIME_PARAMETER ( mime_param_it->data )
pt=payload_type_new();
payload_type_set_number ( pt,belle_sdp_mime_parameter_get_media_format ( mime_param ) );
pt->clock_rate=belle_sdp_mime_parameter_get_rate ( mime_param );
pt->mime_type=ms_strdup ( belle_sdp_mime_parameter_get_type ( mime_param ) );
pt->channels=belle_sdp_mime_parameter_get_channel_count ( mime_param );
payload_type_set_send_fmtp ( pt,belle_sdp_mime_parameter_get_parameters ( mime_param ) );
stream->payloads=ms_list_append ( stream->payloads,pt );
stream->ptime=belle_sdp_mime_parameter_get_ptime ( mime_param );
ms_message ( "Found payload %s/%i fmtp=%s",pt->mime_type,pt->clock_rate,
pt->send_fmtp ? pt->send_fmtp : "" );
}
if ( mime_params ) belle_sip_list_free_with_data ( mime_params,belle_sip_object_unref );
/* Get media specific RTCP attribute */
stream->rtcp_port = stream->rtp_port + 1;
snprintf(stream->rtcp_addr, sizeof(stream->rtcp_addr), "%s", stream->rtp_addr);
attribute=belle_sdp_media_description_get_attribute(media_desc,"rtcp");
if (attribute && (value=belle_sdp_attribute_get_value(attribute))!=NULL){
char tmp[256];
int nb = sscanf(value, "%d IN IP4 %s", &stream->rtcp_port, tmp);
if (nb == 1) {
/* SDP rtcp attribute only contains the port */
} else if (nb == 2) {
strncpy(stream->rtcp_addr, tmp, sizeof(stream->rtcp_addr));
} else {
ms_warning("sdp has a strange a=rtcp line (%s) nb=%i", value, nb);
}
}
/* read crypto lines if any */
if ( stream->proto == SalProtoRtpSavp ) {
valid_count=0;
memset ( &stream->crypto, 0, sizeof ( stream->crypto ) );
for ( attribute_it=belle_sdp_media_description_get_attributes ( media_desc )
; valid_count < SAL_CRYPTO_ALGO_MAX && attribute_it!=NULL;
attribute_it=attribute_it->next ) {
attribute=BELLE_SDP_ATTRIBUTE ( attribute_it->data );
if ( keywordcmp ( "crypto",belle_sdp_attribute_get_name ( attribute ) ) ==0 && belle_sdp_attribute_get_value ( attribute ) !=NULL ) {
nb = sscanf ( belle_sdp_attribute_get_value ( attribute ), "%d %256s inline:%256s",
&stream->crypto[valid_count].tag,
tmp,
tmp2 );
ms_message ( "Found valid crypto line (tag:%d algo:'%s' key:'%s'",
stream->crypto[valid_count].tag,
tmp,
tmp2 );
if ( nb == 3 ) {
if ( keywordcmp ( "AES_CM_128_HMAC_SHA1_80",tmp ) == 0 )
stream->crypto[valid_count].algo = AES_128_SHA1_80;
else if ( keywordcmp ( "AES_CM_128_HMAC_SHA1_32",tmp ) == 0 )
stream->crypto[valid_count].algo = AES_128_SHA1_32;
else {
ms_warning ( "Failed to parse crypto-algo: '%s'", tmp );
stream->crypto[valid_count].algo = 0;
}
if ( stream->crypto[valid_count].algo ) {
strncpy ( stream->crypto[valid_count].master_key, tmp2, 41 );
stream->crypto[valid_count].master_key[40] = '\0';
ms_message ( "Found valid crypto line (tag:%d algo:'%s' key:'%s'",
stream->crypto[valid_count].tag,
tmp,
stream->crypto[valid_count].master_key );
valid_count++;
}
} else {
ms_warning ( "sdp has a strange a= line (%s) nb=%i",belle_sdp_attribute_get_value ( attribute ),nb );
}
}
}
ms_message ( "Found: %d valid crypto lines", valid_count );
}
/* Get ICE candidate attributes if any */
for (attribute_it = belle_sdp_media_description_get_attributes(media_desc); attribute_it != NULL; attribute_it=attribute_it->next) {
const char *att_name;
attribute=(belle_sdp_attribute_t*)attribute_it->data;
att_name=belle_sdp_attribute_get_name(attribute);
value=belle_sdp_attribute_get_value(attribute);
if ((keywordcmp("candidate", att_name) == 0) && (value != NULL)) {
SalIceCandidate *candidate = &stream->ice_candidates[nb_ice_candidates];
int nb = sscanf(value, "%s %u UDP %u %s %d typ %s raddr %s rport %d",
candidate->foundation, &candidate->componentID, &candidate->priority, candidate->addr, &candidate->port,
candidate->type, candidate->raddr, &candidate->rport);
if ((nb == 6) || (nb == 8)) nb_ice_candidates++;
else memset(candidate, 0, sizeof(*candidate));
} else if ((keywordcmp("remote-candidates", att_name) == 0) && (value != NULL)) {
SalIceRemoteCandidate candidate;
unsigned int componentID;
int offset;
const char *ptr = value;
const char *endptr=value+strlen(ptr);
while (3 == sscanf(ptr, "%u %s %u%n", &componentID, candidate.addr, &candidate.port, &offset)) {
if ((componentID > 0) && (componentID <= SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES)) {
SalIceRemoteCandidate *remote_candidate = &stream->ice_remote_candidates[componentID - 1];
strncpy(remote_candidate->addr, candidate.addr, sizeof(remote_candidate->addr));
remote_candidate->port = candidate.port;
}
ptr += offset;
if (ptr<endptr){
if (ptr[offset] == ' ') ptr += 1;
}else break;
}
} else if ((keywordcmp("ice-ufrag", att_name) == 0) && (value != NULL)) {
strncpy(stream->ice_ufrag, value, sizeof(stream->ice_ufrag));
} else if ((keywordcmp("ice-pwd", att_name) == 0) && (value != NULL)) {
strncpy(stream->ice_pwd, value, sizeof(stream->ice_pwd));
} else if (keywordcmp("ice-mismatch", att_name) == 0) {
stream->ice_mismatch = TRUE;
}
}
desc->n_total_streams++;
sdp_to_stream_description(desc, media_desc);
}
return 0;
}
......@@ -211,6 +211,7 @@ typedef struct SalMediaDescription{
int bandwidth;
unsigned int session_ver;
unsigned int session_id;
SalStreamDir dir;
SalStreamDescription streams[SAL_MEDIA_DESCRIPTION_MAX_STREAMS];
char ice_ufrag[SAL_MEDIA_DESCRIPTION_MAX_ICE_UFRAG_LEN];
char ice_pwd[SAL_MEDIA_DESCRIPTION_MAX_ICE_PWD_LEN];
......
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