static bool_t sdp_parse_rtcp_fb_parameters(belle_sdp_media_description_t *media_desc, SalStreamDescription *stream) { belle_sip_list_t *it; belle_sdp_attribute_t *attribute; belle_sdp_rtcp_fb_attribute_t *fb_attribute; MSList *pt_it; PayloadType *pt; int8_t pt_num; bool_t retval = FALSE; /* Handle rtcp-fb attributes that concern all payload types. */ for (it = belle_sdp_media_description_get_attributes(media_desc); it != NULL; it = it->next) { attribute = BELLE_SDP_ATTRIBUTE(it->data); if (keywordcmp("rtcp-fb", belle_sdp_attribute_get_name(attribute)) == 0) { fb_attribute = BELLE_SDP_RTCP_FB_ATTRIBUTE(attribute); if (belle_sdp_rtcp_fb_attribute_get_id(fb_attribute) == -1) { for (pt_it = stream->payloads; pt_it != NULL; pt_it = pt_it->next) { pt = (PayloadType *)pt_it->data; apply_rtcp_fb_attribute_to_payload(fb_attribute, stream, pt); retval = TRUE; } } } } /* Handle rtcp-fb attributes that are specefic to a payload type. */ for (it = belle_sdp_media_description_get_attributes(media_desc); it != NULL; it = it->next) { attribute = BELLE_SDP_ATTRIBUTE(it->data); if (keywordcmp("rtcp-fb", belle_sdp_attribute_get_name(attribute)) == 0) { fb_attribute = BELLE_SDP_RTCP_FB_ATTRIBUTE(attribute); pt_num = belle_sdp_rtcp_fb_attribute_get_id(fb_attribute); for (pt_it = stream->payloads; pt_it != NULL; pt_it = pt_it->next) { pt = (PayloadType *)pt_it->data; retval = TRUE; if (payload_type_get_number(pt) == (int)pt_num) { apply_rtcp_fb_attribute_to_payload(fb_attribute, stream, pt); } } } } return retval; }
static void sdp_parse_media_crypto_parameters(belle_sdp_media_description_t *media_desc, SalStreamDescription *stream) { belle_sip_list_t *attribute_it; belle_sdp_attribute_t *attribute; char tmp[256], tmp2[256], parameters[256]={0}; 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 %256s", &stream->crypto[valid_count].tag, tmp, tmp2, parameters ); if ( nb >= 3 ) { MSCryptoSuite cs; MSCryptoSuiteNameParams np; np.name=tmp; np.params=parameters[0]!='\0' ? parameters : NULL; cs=ms_crypto_suite_build_from_name_params(&np); if (cs==MS_CRYPTO_SUITE_INVALID){ ms_warning ( "Failed to parse crypto-algo: '%s'", tmp ); stream->crypto[valid_count].algo = 0; }else{ char *sep; strncpy ( stream->crypto[valid_count].master_key, tmp2, sizeof(stream->crypto[valid_count].master_key)-1 ); sep=strchr(stream->crypto[valid_count].master_key,'|'); if (sep) *sep='\0'; stream->crypto[valid_count].algo = cs; 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_media_ice_parameters(belle_sdp_media_description_t *media_desc, SalStreamDescription *stream) { belle_sip_list_t *attribute_it; 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(attribute_it->data); att_name = belle_sdp_attribute_get_name(attribute); value = belle_sdp_attribute_get_value(attribute); if ( (nb_ice_candidates < sizeof (stream->ice_candidates)/sizeof(SalIceCandidate)) && (keywordcmp("candidate", att_name) == 0) && (value != NULL)) { SalIceCandidate *candidate = &stream->ice_candidates[nb_ice_candidates]; char proto[4]; int nb = sscanf(value, "%s %u %3s %u %s %d typ %s raddr %s rport %d", candidate->foundation, &candidate->componentID, proto, &candidate->priority, candidate->addr, &candidate->port, candidate->type, candidate->raddr, &candidate->rport); if (strcasecmp("udp",proto)==0 && ((nb == 7) || (nb == 9))) 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)-1); 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)-1); } else if ((keywordcmp("ice-pwd", att_name) == 0) && (value != NULL)) { strncpy(stream->ice_pwd, value, sizeof(stream->ice_pwd) -1); } else if (keywordcmp("ice-mismatch", att_name) == 0) { stream->ice_mismatch = TRUE; } } }
static void sdp_parse_media_crypto_parameters(belle_sdp_media_description_t *media_desc, SalStreamDescription *stream) { belle_sip_list_t *attribute_it; 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 test_media_description_base(belle_sdp_media_description_t* media_description) { const char* attr[] ={"99 MP4V-ES/90000" ,"99 profile-level-id=3" ,"97 theora/90000" ,"98 H263-1998/90000" ,"98 CIF=1;QCIF=1"}; belle_sdp_connection_t* lConnection; belle_sdp_media_description_t* l_media_description=media_description; belle_sdp_media_t* l_media = belle_sdp_media_description_get_media(l_media_description); belle_sip_list_t* list; int fmt[] ={99,97,98}; int i=0; CU_ASSERT_PTR_NOT_NULL(l_media); CU_ASSERT_STRING_EQUAL(belle_sdp_media_get_media_type(l_media), "video"); CU_ASSERT_EQUAL(belle_sdp_media_get_media_port(l_media), 8078); CU_ASSERT_STRING_EQUAL(belle_sdp_media_get_protocol(l_media), "RTP/AVP"); list = belle_sdp_media_get_media_formats(l_media); CU_ASSERT_PTR_NOT_NULL(list); for(;list!=NULL;list=list->next){ CU_ASSERT_EQUAL(BELLE_SIP_POINTER_TO_INT(list->data),fmt[i++]); } /*connection*/ lConnection = belle_sdp_media_description_get_connection(l_media_description); CU_ASSERT_STRING_EQUAL(belle_sdp_connection_get_address(lConnection), "192.168.0.18"); CU_ASSERT_STRING_EQUAL(belle_sdp_connection_get_address_type(lConnection), "IP4"); CU_ASSERT_STRING_EQUAL(belle_sdp_connection_get_network_type(lConnection), "IN"); /*bandwidth*/ CU_ASSERT_EQUAL(belle_sdp_media_description_get_bandwidth(l_media_description,"AS"),380); /*attributes*/ list = belle_sdp_media_description_get_attributes(l_media_description); CU_ASSERT_PTR_NOT_NULL(list); i=0; for(;list!=NULL;list=list->next){ CU_ASSERT_STRING_EQUAL(belle_sdp_attribute_get_value((belle_sdp_attribute_t*)(list->data)),attr[i++]); } }
static void test_mime_parameter(void) { const char* l_src = "m=audio 7078 RTP/AVP 111 110 0 8 9 3 18 101\r\n"\ "a=rtpmap:111 speex/16000\r\n"\ "a=fmtp:111 vbr=on\r\n"\ "a=rtpmap:110 speex/8000\r\n"\ "a=fmtp:110 vbr=on\r\n"\ "a=rtpmap:8 PCMA/8000\r\n"\ "a=rtpmap:101 telephone-event/8000\r\n"\ "a=fmtp:101 0-11\r\n"\ "a=ptime:40\r\n"; belle_sdp_mime_parameter_t* l_param; belle_sdp_mime_parameter_t* lTmp; belle_sdp_media_t* l_media; belle_sip_list_t* mime_parameter_list; belle_sip_list_t* mime_parameter_list_iterator; belle_sdp_media_description_t* l_media_description_tmp = belle_sdp_media_description_parse(l_src); belle_sdp_media_description_t* l_media_description = belle_sdp_media_description_parse(belle_sip_object_to_string(l_media_description_tmp)); belle_sip_object_unref(l_media_description_tmp); mime_parameter_list = belle_sdp_media_description_build_mime_parameters(l_media_description); mime_parameter_list_iterator = mime_parameter_list; CU_ASSERT_PTR_NOT_NULL(mime_parameter_list); belle_sip_object_unref(BELLE_SIP_OBJECT(l_media_description)); l_media_description = belle_sdp_media_description_new(); belle_sdp_media_description_set_media(l_media_description,l_media=belle_sdp_media_parse("m=audio 7078 RTP/AVP 0")); belle_sdp_media_set_media_formats(l_media,belle_sip_list_free(belle_sdp_media_get_media_formats(l_media))); /*to remove 0*/ for (;mime_parameter_list_iterator!=NULL;mime_parameter_list_iterator=mime_parameter_list_iterator->next) { belle_sdp_media_description_append_values_from_mime_parameter(l_media_description,(belle_sdp_mime_parameter_t*)mime_parameter_list_iterator->data); } belle_sip_list_free_with_data(mime_parameter_list, (void (*)(void*))belle_sip_object_unref); /*marshal/unmarshal again*/ l_media_description_tmp = l_media_description; l_media_description= belle_sdp_media_description_parse(belle_sip_object_to_string(l_media_description)); belle_sip_object_unref(l_media_description_tmp); /*belle_sip_message("%s",belle_sip_object_to_string(l_media_description));*/ { belle_sip_list_t* attributes=belle_sdp_media_description_get_attributes(l_media_description); #ifdef BELLE_SDP_FORCE_RTP_MAP CU_ASSERT_PTR_NOT_NULL(belle_sip_list_find_custom(attributes,(belle_sip_compare_func)compare_attribute,"8 PCMA/8000")); CU_ASSERT_PTR_NOT_NULL(belle_sip_list_find_custom(attributes,(belle_sip_compare_func)compare_attribute,"18 G729/8000")); #else CU_ASSERT_PTR_NOT_NULL(belle_sip_list_find_custom(attributes,(belle_sip_compare_func)compare_attribute,"8 PCMA/8000")); CU_ASSERT_PTR_NOT_NULL(belle_sip_list_find_custom(attributes,(belle_sip_compare_func)compare_attribute,"18 G729/8000")); #endif } mime_parameter_list = belle_sdp_media_description_build_mime_parameters(l_media_description); belle_sip_object_unref(l_media_description); lTmp = find_mime_parameter(mime_parameter_list,111); l_param = BELLE_SDP_MIME_PARAMETER(belle_sip_object_clone(BELLE_SIP_OBJECT(lTmp))); CU_ASSERT_PTR_NOT_NULL(l_param); check_mime_param(l_param,16000,1,40,-1,111,"speex","vbr=on"); belle_sip_object_unref(l_param); l_param = find_mime_parameter(mime_parameter_list,110); CU_ASSERT_PTR_NOT_NULL(l_param); check_mime_param(l_param,8000,1,40,-1,110,"speex","vbr=on"); l_param = find_mime_parameter(mime_parameter_list,3); CU_ASSERT_PTR_NOT_NULL(l_param); check_mime_param(l_param,8000,1,40,-1,3,"GSM",NULL); l_param = find_mime_parameter(mime_parameter_list,0); CU_ASSERT_PTR_NOT_NULL(l_param); check_mime_param(l_param,8000,1,40,-1,0,"PCMU",NULL); l_param = find_mime_parameter(mime_parameter_list,8); CU_ASSERT_PTR_NOT_NULL(l_param); check_mime_param(l_param,8000,1,40,-1,8,"PCMA",NULL); l_param = find_mime_parameter(mime_parameter_list,9); CU_ASSERT_PTR_NOT_NULL(l_param); check_mime_param(l_param,8000,1,40,-1,9,"G722",NULL); l_param = find_mime_parameter(mime_parameter_list,101); CU_ASSERT_PTR_NOT_NULL(l_param); check_mime_param(l_param,8000,1,40,-1,101,"telephone-event","0-11"); belle_sip_list_free_with_data(mime_parameter_list, (void (*)(void*))belle_sip_object_unref); }
int sdp_to_media_description ( belle_sdp_session_description_t *session_desc, SalMediaDescription *desc ) { /* typedef struct SalMediaDescription{ int refcount; char addr[64]; char username[64]; int nstreams; int bandwidth; unsigned int session_ver; unsigned int session_id; SalStreamDescription streams[SAL_MEDIA_DESCRIPTION_MAX_STREAMS]; } SalMediaDescription; */ belle_sdp_connection_t* cnx; belle_sip_list_t* media_desc_it; belle_sdp_media_description_t* media_desc; 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; 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 ) ); } if ( belle_sdp_session_description_get_bandwidth ( session_desc,"AS" ) >0 ) { desc->bandwidth=belle_sdp_session_description_get_bandwidth ( session_desc,"AS" ); } /*in some very rare case, session attribute may set stream dir*/ if ( belle_sdp_session_description_get_attribute ( session_desc,"sendrecv" ) ) { stream_dir=SalStreamSendRecv; } else if ( belle_sdp_session_description_get_attribute ( session_desc,"sendonly" ) ) { stream_dir=SalStreamSendOnly; } else if ( belle_sdp_session_description_get_attribute ( session_desc,"recvonly" ) ) { stream_dir=SalStreamRecvOnly; } else if ( belle_sdp_session_description_get_attribute ( session_desc,"inactive" ) ) { stream_dir=SalStreamInactive; } /* Get ICE remote ufrag and remote pwd, and ice_lite flag */ value=belle_sdp_session_description_get_attribute_value(session_desc,"ice-ufrag"); if (value) strncpy(desc->ice_ufrag, value, sizeof(desc->ice_ufrag)); value=belle_sdp_session_description_get_attribute_value(session_desc,"ice-pwd"); if (value) strncpy(desc->ice_pwd, value, sizeof(desc->ice_pwd)); value=belle_sdp_session_description_get_attribute_value(session_desc,"ice-lite"); if (value) desc->ice_lite = TRUE; 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; 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++; } return 0; }
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; belle_sdp_attribute_t* attribute; belle_sip_list_t *custom_attribute_it; const char* value; const char *mtype,*proto; bool_t has_avpf_attributes; stream=&md->streams[md->nb_streams]; media=belle_sdp_media_description_get_media ( media_desc ); proto = belle_sdp_media_get_protocol ( media ); stream->proto=SalProtoOther; if ( proto ) { if (strcasecmp(proto, "RTP/AVP") == 0) { stream->proto = SalProtoRtpAvp; } else if (strcasecmp(proto, "RTP/SAVP") == 0) { stream->proto = SalProtoRtpSavp; } else if (strcasecmp(proto, "RTP/AVPF") == 0) { stream->proto = SalProtoRtpAvpf; } else if (strcasecmp(proto, "RTP/SAVPF") == 0) { stream->proto = SalProtoRtpSavpf; } else if (strcasecmp(proto, "UDP/TLS/RTP/SAVP") == 0) { stream->proto = SalProtoUdpTlsRtpSavp; } else if (strcasecmp(proto, "UDP/TLS/RTP/SAVPF") == 0) { stream->proto = SalProtoUdpTlsRtpSavpf; } else { strncpy(stream->proto_other,proto,sizeof(stream->proto_other)-1); } } 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 ) -1 ); stream->ttl=belle_sdp_connection_get_ttl(cnx); } stream->rtp_port=belle_sdp_media_get_media_port ( media ); 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 if ( strcasecmp ( "text", mtype ) == 0 ) { stream->type=SalText; } 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*/ } stream->rtcp_mux = belle_sdp_media_description_get_attribute(media_desc, "rtcp-mux") != NULL; /* 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)-1); } else { ms_warning("sdp has a strange a=rtcp line (%s) nb=%i", value, nb); } } /* Read DTLS specific attributes : check is some are found in the stream description otherwise copy the session description one(which are at least set to Invalid) */ if (((stream->proto == SalProtoUdpTlsRtpSavpf) || (stream->proto == SalProtoUdpTlsRtpSavp))) { attribute=belle_sdp_media_description_get_attribute(media_desc,"setup"); if (attribute && (value=belle_sdp_attribute_get_value(attribute))!=NULL){ if (strncmp(value, "actpass", 7) == 0) { stream->dtls_role = SalDtlsRoleUnset; } else if (strncmp(value, "active", 6) == 0) { stream->dtls_role = SalDtlsRoleIsClient; } else if (strncmp(value, "passive", 7) == 0) { stream->dtls_role = SalDtlsRoleIsServer; } } if (stream->dtls_role != SalDtlsRoleInvalid && (attribute=belle_sdp_media_description_get_attribute(media_desc,"fingerprint"))) { strncpy(stream->dtls_fingerprint, belle_sdp_attribute_get_value(attribute),sizeof(stream->dtls_fingerprint)); } } /* Read crypto lines if any */ if (sal_stream_description_has_srtp(stream)) { sdp_parse_media_crypto_parameters(media_desc, stream); } /* Get ICE candidate attributes if any */ sdp_parse_media_ice_parameters(media_desc, stream); has_avpf_attributes = sdp_parse_rtcp_fb_parameters(media_desc, stream); /* Get RTCP-FB attributes if any */ if (sal_stream_description_has_avpf(stream)) { enable_avpf_for_stream(stream); } else if (has_avpf_attributes ){ stream->implicit_rtcp_fb = TRUE; } /* Get RTCP-XR attributes if any */ stream->rtcp_xr = md->rtcp_xr; // Use session parameters if no stream parameters are defined sdp_parse_media_rtcp_xr_parameters(media_desc, &stream->rtcp_xr); /* Get the custom attributes */ for (custom_attribute_it = belle_sdp_media_description_get_attributes(media_desc); custom_attribute_it != NULL; custom_attribute_it = custom_attribute_it->next) { belle_sdp_attribute_t *attr = (belle_sdp_attribute_t *)custom_attribute_it->data; stream->custom_sdp_attributes = sal_custom_sdp_attribute_append(stream->custom_sdp_attributes, belle_sdp_attribute_get_name(attr), belle_sdp_attribute_get_value(attr)); } md->nb_streams++; return stream; }