static int parse_attribute_candidate(struct sdp_attribute *output) {
PARSE_DECL;
char *ep;
struct attribute_candidate *c;
output->attr = ATTR_CANDIDATE;
c = &output->u.candidate;
PARSE_INIT;
EXTRACT_TOKEN(u.candidate.cand_parsed.foundation);
EXTRACT_TOKEN(u.candidate.component_str);
EXTRACT_TOKEN(u.candidate.transport_str);
EXTRACT_TOKEN(u.candidate.priority_str);
EXTRACT_TOKEN(u.candidate.address_str);
EXTRACT_TOKEN(u.candidate.port_str);
EXTRACT_TOKEN(u.candidate.typ_str);
EXTRACT_TOKEN(u.candidate.type_str);
c->cand_parsed.component_id = strtoul(c->component_str.s, &ep, 10);
if (ep == c->component_str.s)
return -1;
c->cand_parsed.transport = ice_transport(&c->transport_str);
if (!c->cand_parsed.transport)
return 0;
c->cand_parsed.priority = strtoul(c->priority_str.s, &ep, 10);
if (ep == c->priority_str.s)
return -1;
if (__parse_address(&c->cand_parsed.endpoint.ip46, NULL, NULL, &c->address_str))
return 0;
c->cand_parsed.endpoint.port = strtoul(c->port_str.s, &ep, 10);
if (ep == c->port_str.s)
return -1;
if (str_cmp(&c->typ_str, "typ"))
return -1;
c->cand_parsed.type = ice_candidate_type(&c->type_str);
if (!c->cand_parsed.type)
return 0;
if (!ice_has_related(c->cand_parsed.type))
goto done;
EXTRACT_TOKEN(u.candidate.raddr_str);
EXTRACT_TOKEN(u.candidate.related_address_str);
EXTRACT_TOKEN(u.candidate.rport_str);
EXTRACT_TOKEN(u.candidate.related_port_str);
if (str_cmp(&c->raddr_str, "raddr"))
return -1;
if (str_cmp(&c->rport_str, "rport"))
return -1;
if (__parse_address(&c->cand_parsed.related_address, NULL, NULL, &c->related_address_str))
return 0;
c->cand_parsed.related_port = strtoul(c->related_port_str.s, &ep, 10);
if (ep == c->related_port_str.s)
return -1;
done:
c->parsed = 1;
return 0;
}
void linphone_core_update_local_media_description_from_ice(SalMediaDescription *desc, IceSession *session)
{
const char *rtp_addr, *rtcp_addr;
IceSessionState session_state = ice_session_state(session);
int nb_candidates;
int i, j;
bool_t result;
if (session_state == IS_Completed) {
desc->ice_completed = TRUE;
result = ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, 0), &rtp_addr, NULL, NULL, NULL);
if (result == TRUE) {
strncpy(desc->addr, rtp_addr, sizeof(desc->addr));
} else {
ms_warning("If ICE has completed successfully, rtp_addr should be set!");
}
}
else {
desc->ice_completed = FALSE;
}
strncpy(desc->ice_pwd, ice_session_local_pwd(session), sizeof(desc->ice_pwd));
strncpy(desc->ice_ufrag, ice_session_local_ufrag(session), sizeof(desc->ice_ufrag));
for (i = 0; i < desc->n_active_streams; i++) {
SalStreamDescription *stream = &desc->streams[i];
IceCheckList *cl = ice_session_check_list(session, i);
nb_candidates = 0;
if (cl == NULL) continue;
if (ice_check_list_state(cl) == ICL_Completed) {
stream->ice_completed = TRUE;
result = ice_check_list_selected_valid_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
} else {
stream->ice_completed = FALSE;
result = ice_check_list_default_local_candidate(ice_session_check_list(session, i), &rtp_addr, &stream->rtp_port, &rtcp_addr, &stream->rtcp_port);
}
if (result == TRUE) {
strncpy(stream->rtp_addr, rtp_addr, sizeof(stream->rtp_addr));
strncpy(stream->rtcp_addr, rtcp_addr, sizeof(stream->rtcp_addr));
} else {
memset(stream->rtp_addr, 0, sizeof(stream->rtp_addr));
memset(stream->rtcp_addr, 0, sizeof(stream->rtcp_addr));
}
if ((strlen(ice_check_list_local_pwd(cl)) != strlen(desc->ice_pwd)) || (strcmp(ice_check_list_local_pwd(cl), desc->ice_pwd)))
strncpy(stream->ice_pwd, ice_check_list_local_pwd(cl), sizeof(stream->ice_pwd));
else
memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
if ((strlen(ice_check_list_local_ufrag(cl)) != strlen(desc->ice_ufrag)) || (strcmp(ice_check_list_local_ufrag(cl), desc->ice_ufrag)))
strncpy(stream->ice_ufrag, ice_check_list_local_ufrag(cl), sizeof(stream->ice_ufrag));
else
memset(stream->ice_pwd, 0, sizeof(stream->ice_pwd));
stream->ice_mismatch = ice_check_list_is_mismatch(cl);
if ((ice_check_list_state(cl) == ICL_Running) || (ice_check_list_state(cl) == ICL_Completed)) {
memset(stream->ice_candidates, 0, sizeof(stream->ice_candidates));
for (j = 0; j < MIN(ms_list_size(cl->local_candidates), SAL_MEDIA_DESCRIPTION_MAX_ICE_CANDIDATES); j++) {
SalIceCandidate *sal_candidate = &stream->ice_candidates[nb_candidates];
IceCandidate *ice_candidate = ms_list_nth_data(cl->local_candidates, j);
const char *default_addr = NULL;
int default_port = 0;
if (ice_candidate->componentID == 1) {
default_addr = stream->rtp_addr;
default_port = stream->rtp_port;
} else if (ice_candidate->componentID == 2) {
default_addr = stream->rtcp_addr;
default_port = stream->rtcp_port;
} else continue;
if (default_addr[0] == '\0') default_addr = desc->addr;
/* 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. */
if ((ice_check_list_state(cl) == ICL_Completed)
&& !((ice_candidate->taddr.port == default_port) && (strlen(ice_candidate->taddr.ip) == strlen(default_addr)) && (strcmp(ice_candidate->taddr.ip, default_addr) == 0)))
continue;
strncpy(sal_candidate->foundation, ice_candidate->foundation, sizeof(sal_candidate->foundation));
sal_candidate->componentID = ice_candidate->componentID;
sal_candidate->priority = ice_candidate->priority;
strncpy(sal_candidate->type, ice_candidate_type(ice_candidate), sizeof(sal_candidate->type));
strncpy(sal_candidate->addr, ice_candidate->taddr.ip, sizeof(sal_candidate->addr));
sal_candidate->port = ice_candidate->taddr.port;
if ((ice_candidate->base != NULL) && (ice_candidate->base != ice_candidate)) {
strncpy(sal_candidate->raddr, ice_candidate->base->taddr.ip, sizeof(sal_candidate->raddr));
sal_candidate->rport = ice_candidate->base->taddr.port;
}
nb_candidates++;
}
}
if ((ice_check_list_state(cl) == ICL_Completed) && (ice_session_role(session) == IR_Controlling)) {
int rtp_port, rtcp_port;
memset(stream->ice_remote_candidates, 0, sizeof(stream->ice_remote_candidates));
if (ice_check_list_selected_valid_remote_candidate(cl, &rtp_addr, &rtp_port, &rtcp_addr, &rtcp_port) == TRUE) {
strncpy(stream->ice_remote_candidates[0].addr, rtp_addr, sizeof(stream->ice_remote_candidates[0].addr));
stream->ice_remote_candidates[0].port = rtp_port;
strncpy(stream->ice_remote_candidates[1].addr, rtcp_addr, sizeof(stream->ice_remote_candidates[1].addr));
stream->ice_remote_candidates[1].port = rtcp_port;
} else {
ms_error("ice: Selected valid remote candidates should be present if the check list is in the Completed state");
}
} else {
for (j = 0; j < SAL_MEDIA_DESCRIPTION_MAX_ICE_REMOTE_CANDIDATES; j++) {
stream->ice_remote_candidates[j].addr[0] = '\0';
stream->ice_remote_candidates[j].port = 0;
}
}
}
}
