static void add_ice_candidates(belle_sdp_media_description_t *md, const SalStreamDescription *desc){ char buffer[1024]; const SalIceCandidate *candidate; int nb; int i; for (i = 0; i < SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES; i++) { candidate = &desc->ice_candidates[i]; if ((candidate->addr[0] == '\0') || (candidate->port == 0)) break; nb = snprintf(buffer, sizeof(buffer), "%s %u UDP %u %s %d typ %s", candidate->foundation, candidate->componentID, candidate->priority, candidate->addr, candidate->port, candidate->type); if (nb < 0) { ms_error("Cannot add ICE candidate attribute!"); return; } if (candidate->raddr[0] != '\0') { nb = snprintf(buffer + nb, sizeof(buffer) - nb, " raddr %s rport %d", candidate->raddr, candidate->rport); if (nb < 0) { ms_error("Cannot add ICE candidate attribute!"); return; } } belle_sdp_media_description_add_attribute(md,belle_sdp_attribute_create("candidate",buffer)); } }
static void test_overflow(void){ belle_sdp_session_description_t* sdp; belle_sip_list_t *mds; belle_sdp_media_description_t *vmd; int i; const size_t orig_buffsize=1024; size_t buffsize=orig_buffsize; char *buffer=belle_sip_malloc0(buffsize); size_t offset=0; sdp=belle_sdp_session_description_parse(big_sdp); CU_ASSERT_PTR_NOT_NULL(sdp); mds=belle_sdp_session_description_get_media_descriptions(sdp); CU_ASSERT_PTR_NOT_NULL(mds); CU_ASSERT_PTR_NOT_NULL(mds->next); vmd=(belle_sdp_media_description_t*)mds->next->data; for(i=0;i<16;i++){ belle_sdp_media_description_add_attribute(vmd,belle_sdp_attribute_create("candidate","2 1 UDP 1694498815 82.65.223.97 9078 typ srflx raddr 192.168.0.2 rport 9078")); } CU_ASSERT_EQUAL(belle_sip_object_marshal(BELLE_SIP_OBJECT(sdp),buffer,buffsize,&offset),BELLE_SIP_BUFFER_OVERFLOW); belle_sip_message("marshal size is %i",(int)offset); CU_ASSERT_TRUE(offset==buffsize); belle_sip_object_unref(sdp); belle_sip_free(buffer); }
static void add_ice_remote_candidates(belle_sdp_media_description_t *md, const SalStreamDescription *desc){ char buffer[1024]; char *ptr = buffer; const SalIceRemoteCandidate *candidate; int offset = 0; int i; buffer[0] = '\0'; for (i = 0; i < SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES; i++) { candidate = &desc->ice_remote_candidates[i]; if ((candidate->addr[0] != '\0') && (candidate->port != 0)) { offset = snprintf(ptr, buffer + sizeof(buffer) - ptr, "%s%d %s %d", (i > 0) ? " " : "", i + 1, candidate->addr, candidate->port); if (offset < 0) { ms_error("Cannot add ICE remote-candidates attribute!"); return; } ptr += offset; } } if (buffer[0] != '\0') belle_sdp_media_description_add_attribute(md,belle_sdp_attribute_create("remote-candidates",buffer)); }
static void stream_description_to_sdp ( belle_sdp_session_description_t *session_desc, const SalMediaDescription *md, const SalStreamDescription *stream ) { belle_sdp_mime_parameter_t* mime_param; belle_sdp_media_description_t* media_desc; int j; MSList* pt_it; PayloadType* pt; char buffer[1024]; char* dir=NULL; const char *rtp_addr; const char *rtcp_addr; int rtp_port; int rtcp_port; bool_t different_rtp_and_rtcp_addr; rtp_addr=stream->rtp_addr; rtcp_addr=stream->rtcp_addr; rtp_port=stream->rtp_port; rtcp_port=stream->rtcp_port; media_desc = belle_sdp_media_description_create ( sal_stream_description_get_type_as_string(stream) ,stream->rtp_port ,1 ,sal_media_proto_to_string ( stream->proto ) ,NULL ); if (stream->payloads) { for ( pt_it=stream->payloads; pt_it!=NULL; pt_it=pt_it->next ) { pt= ( PayloadType* ) pt_it->data; mime_param= belle_sdp_mime_parameter_create ( pt->mime_type , payload_type_get_number ( pt ) , pt->clock_rate ,stream->type==SalAudio?1:-1 ); belle_sdp_mime_parameter_set_parameters ( mime_param,pt->recv_fmtp ); if ( stream->ptime>0 ) { belle_sdp_mime_parameter_set_ptime ( mime_param,stream->ptime ); } belle_sdp_media_description_append_values_from_mime_parameter ( media_desc,mime_param ); belle_sip_object_unref ( mime_param ); } } else { /* to comply with SDP we cannot have an empty payload type number list */ /* as it happens only when mline is declined with a zero port, it does not matter to put whatever codec*/ belle_sip_list_t* format = belle_sip_list_append(NULL,0); belle_sdp_media_set_media_formats(belle_sdp_media_description_get_media(media_desc),format); } /*only add a c= line within the stream description if address are differents*/ if (rtp_addr[0]!='\0' && strcmp(rtp_addr,md->addr)!=0){ bool_t inet6; if (strchr(rtp_addr,':')!=NULL){ inet6=TRUE; }else inet6=FALSE; belle_sdp_media_description_set_connection(media_desc,belle_sdp_connection_create("IN", inet6 ? "IP6" : "IP4", rtp_addr)); } if ( stream->bandwidth>0 ) belle_sdp_media_description_set_bandwidth ( media_desc,"AS",stream->bandwidth ); if ( stream->proto == SalProtoRtpSavp ) { /* add crypto lines */ for ( j=0; j<SAL_CRYPTO_ALGO_MAX; j++ ) { switch ( stream->crypto[j].algo ) { case AES_128_SHA1_80: snprintf ( buffer, sizeof ( buffer ), "%d %s inline:%s", stream->crypto[j].tag, "AES_CM_128_HMAC_SHA1_80", stream->crypto[j].master_key ); belle_sdp_media_description_add_attribute ( media_desc,belle_sdp_attribute_create ( "crypto",buffer ) ); break; case AES_128_SHA1_32: snprintf ( buffer, sizeof ( buffer ), "%d %s inline:%s", stream->crypto[j].tag, "AES_CM_128_HMAC_SHA1_32", stream->crypto[j].master_key ); belle_sdp_media_description_add_attribute ( media_desc,belle_sdp_attribute_create ( "crypto",buffer ) ); break; case AES_128_NO_AUTH: ms_warning ( "Unsupported crypto suite: AES_128_NO_AUTH" ); break; case NO_CIPHER_SHA1_80: ms_warning ( "Unsupported crypto suite: NO_CIPHER_SHA1_80" ); break; default: j = SAL_CRYPTO_ALGO_MAX; /* no break */ } } } switch ( stream->dir ) { case SalStreamSendRecv: /*dir="sendrecv";*/ dir=NULL; break; case SalStreamRecvOnly: dir="recvonly"; break; case SalStreamSendOnly: dir="sendonly"; break; case SalStreamInactive: dir="inactive"; break; } if ( dir ) belle_sdp_media_description_add_attribute ( media_desc,belle_sdp_attribute_create ( dir,NULL ) ); if (rtp_port != 0) { different_rtp_and_rtcp_addr = (rtcp_addr[0] != '\0') && (strcmp(rtp_addr, rtcp_addr) != 0); if ((rtcp_port != (rtp_port + 1)) || (different_rtp_and_rtcp_addr == TRUE)) { if (different_rtp_and_rtcp_addr == TRUE) { snprintf(buffer, sizeof(buffer), "%u IN IP4 %s", rtcp_port, rtcp_addr); } else { snprintf(buffer, sizeof(buffer), "%u",rtcp_port); } belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("rtcp",buffer)); } } if (stream->ice_completed == TRUE) { belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("nortpproxy","yes")); } if (stream->ice_mismatch == TRUE) { belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("ice-mismatch",NULL)); } else { if (rtp_port != 0) { if (stream->ice_pwd[0] != '\0') belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("ice-pwd",stream->ice_pwd)); if (stream->ice_ufrag[0] != '\0') belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("ice-ufrag",stream->ice_ufrag)); add_ice_candidates(media_desc,stream); add_ice_remote_candidates(media_desc,stream); } } if (stream->rtcp_xr.enabled == TRUE) { char sastr[1024] = {0}; char mastr[1024] = {0}; size_t saoff = 0; size_t maoff = 0; const belle_sdp_attribute_t *session_attribute = belle_sdp_session_description_get_attribute(session_desc, "rtcp-xr"); belle_sdp_attribute_t *media_attribute; if (session_attribute != NULL) { belle_sip_object_marshal((belle_sip_object_t*)session_attribute, sastr, sizeof(sastr), &saoff); } media_attribute = create_rtcp_xr_attribute(&stream->rtcp_xr); if (media_attribute != NULL) { belle_sip_object_marshal((belle_sip_object_t*)media_attribute, mastr, sizeof(mastr), &maoff); } if (strcmp(sastr, mastr) != 0) { belle_sdp_media_description_add_attribute(media_desc, media_attribute); } else { belle_sip_object_unref((belle_sip_object_t*)media_attribute); } } belle_sdp_session_description_add_media_description(session_desc, media_desc); }
belle_sdp_session_description_t * media_description_to_sdp ( const SalMediaDescription *desc ) { belle_sdp_session_description_t* session_desc=belle_sdp_session_description_new(); bool_t inet6; belle_sdp_origin_t* origin; int i; if ( strchr ( desc->addr,':' ) !=NULL ) { inet6=1; } else inet6=0; belle_sdp_session_description_set_version ( session_desc,belle_sdp_version_create ( 0 ) ); origin = belle_sdp_origin_create ( desc->username ,desc->session_id ,desc->session_ver ,"IN" , inet6 ? "IP6" :"IP4" ,desc->addr ); belle_sdp_session_description_set_origin ( session_desc,origin ); belle_sdp_session_description_set_session_name ( session_desc, belle_sdp_session_name_create ( desc->name[0]!='\0' ? desc->name : "Talk" ) ); if ( (!sal_media_description_has_dir ( desc,SalStreamSendOnly ) && !sal_media_description_has_dir ( desc,SalStreamInactive )) || desc->ice_ufrag[0] != '\0' ) { belle_sdp_session_description_set_connection ( session_desc ,belle_sdp_connection_create ( "IN",inet6 ? "IP6" :"IP4",desc->addr ) ); } else { belle_sdp_session_description_set_connection ( session_desc ,belle_sdp_connection_create ( "IN" ,inet6 ? "IP6" :"IP4" ,inet6 ? "::0" :"0.0.0.0" ) ); } belle_sdp_session_description_set_time_description ( session_desc,belle_sdp_time_description_create ( 0,0 ) ); if ( desc->bandwidth>0 ) { belle_sdp_session_description_set_bandwidth ( session_desc,"AS",desc->bandwidth ); } if (desc->ice_completed == TRUE) belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("nortpproxy","yes")); if (desc->ice_pwd[0] != '\0') belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("ice-pwd",desc->ice_pwd)); if (desc->ice_ufrag[0] != '\0') belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("ice-ufrag",desc->ice_ufrag)); if (desc->rtcp_xr.enabled == TRUE) { belle_sdp_session_description_add_attribute(session_desc, create_rtcp_xr_attribute(&desc->rtcp_xr)); } for ( i=0; i<desc->n_total_streams; i++ ) { stream_description_to_sdp(session_desc, desc, &desc->streams[i]); } return session_desc; }
static void stream_description_to_sdp ( belle_sdp_session_description_t *session_desc, const SalMediaDescription *md, const SalStreamDescription *stream ) { belle_sdp_mime_parameter_t* mime_param; belle_sdp_media_description_t* media_desc; int j; MSList* pt_it; PayloadType* pt; char buffer[1024]; char* dir=NULL; const char *rtp_addr; const char *rtcp_addr; int rtp_port; int rtcp_port; bool_t different_rtp_and_rtcp_addr; rtp_addr=stream->rtp_addr; rtcp_addr=stream->rtcp_addr; rtp_port=stream->rtp_port; rtcp_port=stream->rtcp_port; media_desc = belle_sdp_media_description_create ( sal_stream_description_get_type_as_string(stream) ,stream->rtp_port ,1 ,sal_media_proto_to_string ( stream->proto ) ,NULL ); if (stream->payloads) { for ( pt_it=stream->payloads; pt_it!=NULL; pt_it=pt_it->next ) { pt= ( PayloadType* ) pt_it->data; mime_param= belle_sdp_mime_parameter_create ( pt->mime_type , payload_type_get_number ( pt ) , pt->clock_rate , pt->channels>0 ? pt->channels : -1 ); belle_sdp_mime_parameter_set_parameters ( mime_param,pt->recv_fmtp ); if ( stream->ptime>0 ) { belle_sdp_mime_parameter_set_ptime ( mime_param,stream->ptime ); } belle_sdp_media_description_append_values_from_mime_parameter ( media_desc,mime_param ); belle_sip_object_unref ( mime_param ); } } else { /* to comply with SDP we cannot have an empty payload type number list */ /* as it happens only when mline is declined with a zero port, it does not matter to put whatever codec*/ belle_sip_list_t* format = belle_sip_list_append(NULL,0); belle_sdp_media_set_media_formats(belle_sdp_media_description_get_media(media_desc),format); } /*only add a c= line within the stream description if address are differents*/ if (rtp_addr[0]!='\0' && strcmp(rtp_addr,md->addr)!=0){ bool_t inet6; belle_sdp_connection_t *connection; if (strchr(rtp_addr,':')!=NULL){ inet6=TRUE; }else inet6=FALSE; connection = belle_sdp_connection_create("IN", inet6 ? "IP6" : "IP4", rtp_addr); if (ms_is_multicast(rtp_addr)) { /*remove session cline in case of multicast*/ belle_sdp_session_description_set_connection(session_desc,NULL); if (inet6 == FALSE) belle_sdp_connection_set_ttl(connection,stream->ttl); } belle_sdp_media_description_set_connection(media_desc,connection); } if ( stream->bandwidth>0 ) belle_sdp_media_description_set_bandwidth ( media_desc,"AS",stream->bandwidth ); if ((stream->proto == SalProtoRtpSavpf) || (stream->proto == SalProtoRtpSavp)) { /* add crypto lines */ for ( j=0; j<SAL_CRYPTO_ALGO_MAX; j++ ) { MSCryptoSuiteNameParams desc; if (ms_crypto_suite_to_name_params(stream->crypto[j].algo,&desc)==0){ if (desc.params) snprintf ( buffer, sizeof ( buffer )-1, "%d %s inline:%s %s", stream->crypto[j].tag, desc.name, stream->crypto[j].master_key,desc.params); else snprintf ( buffer, sizeof ( buffer )-1, "%d %s inline:%s", stream->crypto[j].tag, desc.name, stream->crypto[j].master_key ); belle_sdp_media_description_add_attribute( media_desc,belle_sdp_attribute_create ("crypto", buffer)); }else break; } } /* insert DTLS session attribute if needed */ if ((stream->proto == SalProtoUdpTlsRtpSavpf) || (stream->proto == SalProtoUdpTlsRtpSavp)) { char* ssrc_attribute = ms_strdup_printf("%u cname:%s",htonl(stream->rtp_ssrc),stream->rtcp_cname); if ((stream->dtls_role != SalDtlsRoleInvalid) && (strlen(stream->dtls_fingerprint)>0)) { switch(stream->dtls_role) { case SalDtlsRoleIsClient: belle_sdp_media_description_add_attribute(media_desc, belle_sdp_attribute_create("setup","active")); break; case SalDtlsRoleIsServer: belle_sdp_media_description_add_attribute(media_desc, belle_sdp_attribute_create("setup","passive")); break; case SalDtlsRoleUnset: default: belle_sdp_media_description_add_attribute(media_desc, belle_sdp_attribute_create("setup","actpass")); break; } belle_sdp_media_description_add_attribute(media_desc, belle_sdp_attribute_create("fingerprint",stream->dtls_fingerprint)); } belle_sdp_media_description_add_attribute(media_desc, belle_sdp_attribute_create("ssrc",ssrc_attribute)); /* truc de Jehan a virer? */ ms_free(ssrc_attribute); } switch ( stream->dir ) { case SalStreamSendRecv: /*dir="sendrecv";*/ dir=NULL; break; case SalStreamRecvOnly: dir="recvonly"; break; case SalStreamSendOnly: dir="sendonly"; break; case SalStreamInactive: dir="inactive"; break; } if ( dir ) belle_sdp_media_description_add_attribute ( media_desc,belle_sdp_attribute_create ( dir,NULL ) ); if (rtp_port != 0) { different_rtp_and_rtcp_addr = (rtcp_addr[0] != '\0') && (strcmp(rtp_addr, rtcp_addr) != 0); if ((rtcp_port != (rtp_port + 1)) || (different_rtp_and_rtcp_addr == TRUE)) { if (different_rtp_and_rtcp_addr == TRUE) { snprintf(buffer, sizeof(buffer), "%u IN IP4 %s", rtcp_port, rtcp_addr); } else { snprintf(buffer, sizeof(buffer), "%u",rtcp_port); } belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("rtcp",buffer)); } } if (stream->ice_completed == TRUE) { belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("nortpproxy","yes")); } if (stream->ice_mismatch == TRUE) { belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("ice-mismatch",NULL)); } else { if (rtp_port != 0) { if (stream->ice_pwd[0] != '\0') belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("ice-pwd",stream->ice_pwd)); if (stream->ice_ufrag[0] != '\0') belle_sdp_media_description_add_attribute(media_desc,belle_sdp_attribute_create ("ice-ufrag",stream->ice_ufrag)); add_ice_candidates(media_desc,stream); add_ice_remote_candidates(media_desc,stream); } } if ((rtp_port != 0) && ((stream->proto == SalProtoRtpAvpf) || (stream->proto == SalProtoRtpSavpf))) { add_rtcp_fb_attributes(media_desc, md, stream); } if ((rtp_port != 0) && (stream->rtcp_xr.enabled == TRUE)) { char sastr[1024] = {0}; char mastr[1024] = {0}; size_t saoff = 0; size_t maoff = 0; const belle_sdp_attribute_t *session_attribute = belle_sdp_session_description_get_attribute(session_desc, "rtcp-xr"); belle_sdp_attribute_t *media_attribute; if (session_attribute != NULL) { belle_sip_object_marshal((belle_sip_object_t*)session_attribute, sastr, sizeof(sastr), &saoff); } media_attribute = create_rtcp_xr_attribute(&stream->rtcp_xr); if (media_attribute != NULL) { belle_sip_object_marshal((belle_sip_object_t*)media_attribute, mastr, sizeof(mastr), &maoff); } if (strcmp(sastr, mastr) != 0) { belle_sdp_media_description_add_attribute(media_desc, media_attribute); } else { belle_sip_object_unref((belle_sip_object_t*)media_attribute); } } /* * rfc5576 * 4.1. The "ssrc" Media Attribute * <ssrc-id> is the synchronization source (SSRC) ID of the * source being described, interpreted as a 32-bit unsigned integer in * network byte order and represented in decimal.*/ belle_sdp_session_description_add_media_description(session_desc, media_desc); }
belle_sdp_session_description_t * media_description_to_sdp ( const SalMediaDescription *desc ) { belle_sdp_session_description_t* session_desc=belle_sdp_session_description_new(); bool_t inet6; belle_sdp_origin_t* origin; int i; if ( strchr ( desc->addr,':' ) !=NULL ) { inet6=1; } else inet6=0; belle_sdp_session_description_set_version ( session_desc,belle_sdp_version_create ( 0 ) ); origin = belle_sdp_origin_create ( desc->username ,desc->session_id ,desc->session_ver ,"IN" , inet6 ? "IP6" :"IP4" ,desc->addr ); belle_sdp_session_description_set_origin ( session_desc,origin ); belle_sdp_session_description_set_session_name ( session_desc, belle_sdp_session_name_create ( desc->name[0]!='\0' ? desc->name : "Talk" ) ); if ( !sal_media_description_has_dir ( desc,SalStreamInactive ) || desc->ice_ufrag[0] != '\0' ) { /*in case of sendonly, setting of the IP on cnx we give a chance to receive stun packets*/ belle_sdp_session_description_set_connection ( session_desc ,belle_sdp_connection_create ( "IN",inet6 ? "IP6" :"IP4",desc->addr ) ); } else { belle_sdp_session_description_set_connection ( session_desc ,belle_sdp_connection_create ( "IN" ,inet6 ? "IP6" :"IP4" ,inet6 ? "::0" :"0.0.0.0" ) ); } belle_sdp_session_description_set_time_description ( session_desc,belle_sdp_time_description_create ( 0,0 ) ); if ( desc->bandwidth>0 ) { belle_sdp_session_description_set_bandwidth ( session_desc,"AS",desc->bandwidth ); } if (desc->set_nortpproxy == TRUE) belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("nortpproxy","yes")); if (desc->ice_pwd[0] != '\0') belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("ice-pwd",desc->ice_pwd)); if (desc->ice_ufrag[0] != '\0') belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("ice-ufrag",desc->ice_ufrag)); if (desc->rtcp_xr.enabled == TRUE) { belle_sdp_session_description_add_attribute(session_desc, create_rtcp_xr_attribute(&desc->rtcp_xr)); } if (desc->custom_sdp_attributes) { belle_sdp_session_description_t *custom_desc = (belle_sdp_session_description_t *)desc->custom_sdp_attributes; belle_sip_list_t *l = belle_sdp_session_description_get_attributes(custom_desc); belle_sip_list_t *elem; for (elem = l; elem != NULL; elem = elem->next) { belle_sdp_session_description_add_attribute(session_desc, (belle_sdp_attribute_t *)elem->data); } } for ( i=0; i<desc->nb_streams; i++ ) { stream_description_to_sdp(session_desc, desc, &desc->streams[i]); } return session_desc; }