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open5gs/src/nrf/nnrf-handler.c

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/*
* Copyright (C) 2019-2023 by Sukchan Lee <acetcom@gmail.com>
*
* This file is part of Open5GS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "nnrf-handler.h"
#include "sbi-path.h"
static int discover_handler(
int status, ogs_sbi_response_t *response, void *data);
static void handle_nf_discover_search_result(
OpenAPI_search_result_t *SearchResult);
bool nrf_nnrf_handle_nf_register(ogs_sbi_nf_instance_t *nf_instance,
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
int status;
ogs_sbi_response_t *response = NULL;
OpenAPI_nf_profile_t *NFProfile = NULL;
ogs_assert(nf_instance);
ogs_assert(stream);
ogs_assert(recvmsg);
NFProfile = recvmsg->NFProfile;
if (!NFProfile) {
ogs_error("No NFProfile");
ogs_assert(true ==
ogs_sbi_server_send_error(stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No NFProfile", NULL));
return false;
}
if (!NFProfile->nf_instance_id) {
ogs_error("No NFProfile.NFInstanceId");
ogs_assert(true ==
ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No NFProfile.NFInstanceId", NULL));
return false;
}
if (!NFProfile->nf_type) {
ogs_error("No NFProfile.NFType");
ogs_assert(true ==
ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No NFProfile.NFType", NULL));
return false;
}
if (!NFProfile->nf_status) {
ogs_error("No NFProfile.NFStatus");
ogs_assert(true ==
ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No NFProfile.NFStatus", NULL));
return false;
}
ogs_nnrf_nfm_handle_nf_profile(nf_instance, NFProfile);
ogs_sbi_client_associate(nf_instance);
switch (nf_instance->nf_type) {
case OpenAPI_nf_type_SEPP:
ogs_sbi_self()->sepp_instance = nf_instance;
break;
case OpenAPI_nf_type_SCP:
ogs_sbi_self()->scp_instance = nf_instance;
break;
default:
break;
}
/*
* TS29.510
* Table 6.1.6.2.2-1: Definition of type NFProfile
* If not provided, the PLMN of the NRF are assumed for the NF.
*/
if (ogs_local_conf()->num_of_serving_plmn_id &&
NFProfile->plmn_list == NULL) {
/* NRF has PLMN and NF does NOT have PLMN,
* so, copy NRF PLMN to NF PLMN */
memcpy(nf_instance->plmn_id, ogs_local_conf()->serving_plmn_id,
sizeof(nf_instance->plmn_id));
nf_instance->num_of_plmn_id = ogs_local_conf()->num_of_serving_plmn_id;
}
if (OGS_FSM_CHECK(&nf_instance->sm, nrf_nf_state_will_register)) {
recvmsg->http.location = recvmsg->h.uri;
status = OGS_SBI_HTTP_STATUS_CREATED;
} else if (OGS_FSM_CHECK(&nf_instance->sm, nrf_nf_state_registered)) {
status = OGS_SBI_HTTP_STATUS_OK;
} else
ogs_assert_if_reached();
/* NRF uses pre-configured heartbeat if NFs did not send it */
if (NFProfile->is_heart_beat_timer == false)
nf_instance->time.heartbeat_interval =
ogs_local_conf()->time.nf_instance.heartbeat_interval;
/*
* TS29.510
* Annex B (normative):NF Profile changes in NFRegister and NFUpdate
* (NF Profile Complete Replacement) responses
*/
if (NFProfile->is_nf_profile_changes_support_ind == true &&
NFProfile->nf_profile_changes_support_ind == true) {
OpenAPI_nf_profile_t NFProfileChanges;
ogs_sbi_message_t sendmsg;
OpenAPI_plmn_id_t *PlmnId = NULL;
OpenAPI_lnode_t *node = NULL;
memset(&NFProfileChanges, 0, sizeof(NFProfileChanges));
NFProfileChanges.nf_instance_id = NFProfile->nf_instance_id;
NFProfileChanges.nf_type = NFProfile->nf_type;
NFProfileChanges.nf_status = NFProfile->nf_status;
if (NFProfile->is_heart_beat_timer == false) {
if (nf_instance->time.heartbeat_interval) {
NFProfileChanges.is_heart_beat_timer = true;
NFProfileChanges.heart_beat_timer =
nf_instance->time.heartbeat_interval;
}
}
NFProfileChanges.is_nf_profile_changes_ind = true;
NFProfileChanges.nf_profile_changes_ind = true;
if (ogs_local_conf()->num_of_serving_plmn_id &&
NFProfile->plmn_list == NULL) {
OpenAPI_list_t *PlmnIdList = NULL;
int i;
PlmnIdList = OpenAPI_list_create();
ogs_assert(PlmnIdList);
for (i = 0; i < ogs_local_conf()->num_of_serving_plmn_id; i++) {
PlmnId = ogs_sbi_build_plmn_id(
&ogs_local_conf()->serving_plmn_id[i]);
ogs_assert(PlmnId);
OpenAPI_list_add(PlmnIdList, PlmnId);
}
if (PlmnIdList->count)
NFProfileChanges.plmn_list = PlmnIdList;
else
OpenAPI_list_free(PlmnIdList);
}
memset(&sendmsg, 0, sizeof(sendmsg));
sendmsg.http.location = recvmsg->http.location;
sendmsg.NFProfile = &NFProfileChanges;
response = ogs_sbi_build_response(&sendmsg, status);
OpenAPI_list_for_each(NFProfileChanges.plmn_list, node) {
PlmnId = node->data;
if (PlmnId)
ogs_sbi_free_plmn_id(PlmnId);
}
OpenAPI_list_free(NFProfileChanges.plmn_list);
} else {
if (NFProfile->is_heart_beat_timer == false) {
if (nf_instance->time.heartbeat_interval) {
NFProfile->is_heart_beat_timer = true;
NFProfile->heart_beat_timer =
nf_instance->time.heartbeat_interval;
}
}
response = ogs_sbi_build_response(recvmsg, status);
}
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
return true;
}
bool nrf_nnrf_handle_nf_update(ogs_sbi_nf_instance_t *nf_instance,
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
ogs_sbi_response_t *response = NULL;
OpenAPI_list_t *PatchItemList = NULL;
OpenAPI_lnode_t *node;
ogs_assert(nf_instance);
ogs_assert(stream);
ogs_assert(recvmsg);
SWITCH(recvmsg->h.method)
CASE(OGS_SBI_HTTP_METHOD_PUT)
return nrf_nnrf_handle_nf_register(
nf_instance, stream, recvmsg);
CASE(OGS_SBI_HTTP_METHOD_PATCH)
PatchItemList = recvmsg->PatchItemList;
if (!PatchItemList) {
ogs_error("No PatchItemList Array");
ogs_assert(true ==
ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No PatchItemList", NULL));
return false;
}
OpenAPI_list_for_each(PatchItemList, node) {
OpenAPI_patch_item_t *patch_item = node->data;
if (!patch_item) {
ogs_error("No PatchItem");
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No PatchItem", NULL));
return false;
}
if (patch_item->op != OpenAPI_patch_operation_replace) {
ogs_error("Unknown PatchItem.Operation [%s]",
OpenAPI_patch_operation_ToString(patch_item->op));
continue;
}
SWITCH(patch_item->path)
CASE(OGS_SBI_PATCH_PATH_NF_STATUS)
break;
CASE(OGS_SBI_PATCH_PATH_LOAD)
break;
DEFAULT
ogs_error("Unknown PatchItem.Path [%s]", patch_item->path);
END
}
response = ogs_sbi_build_response(
recvmsg, OGS_SBI_HTTP_STATUS_NO_CONTENT);
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
break;
DEFAULT
ogs_error("[%s] Invalid HTTP method [%s]",
nf_instance->id, recvmsg->h.method);
ogs_assert_if_reached();
END
return true;
}
bool nrf_nnrf_handle_nf_status_subscribe(
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
bool rc;
int status;
ogs_sbi_response_t *response = NULL;
OpenAPI_subscription_data_t *SubscriptionData = NULL;
OpenAPI_subscr_cond_t *SubscrCond = NULL;
ogs_sbi_subscription_data_t *subscription_data = NULL;
ogs_sbi_client_t *client = NULL;
OpenAPI_uri_scheme_e scheme = OpenAPI_uri_scheme_NULL;
char *fqdn = NULL;
uint16_t fqdn_port = 0;
ogs_sockaddr_t *addr = NULL, *addr6 = NULL;
ogs_sbi_server_t *server = NULL;
ogs_sbi_header_t header;
ogs_uuid_t uuid;
char id[OGS_UUID_FORMATTED_LENGTH + 1];
ogs_assert(stream);
ogs_assert(recvmsg);
if (recvmsg->h.resource.component[1]) {
ogs_error("Invalid POST Format [%s]",
recvmsg->h.resource.component[1]);
ogs_assert(true ==
ogs_sbi_server_send_error(stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "Invalid POST Format",
recvmsg->h.resource.component[1]));
return false;
}
SubscriptionData = recvmsg->SubscriptionData;
if (!SubscriptionData) {
ogs_error("No SubscriptionData");
ogs_assert(true ==
ogs_sbi_server_send_error(stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No SubscriptionData", NULL));
return false;
}
if (!SubscriptionData->nf_status_notification_uri) {
ogs_error("No nfStatusNotificationUri");
ogs_assert(true ==
ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No SubscriptionData", "NFStatusNotificationURL"));
return false;
}
ogs_uuid_get(&uuid);
ogs_uuid_format(id, &uuid);
subscription_data = ogs_sbi_subscription_data_add();
ogs_assert(subscription_data);
ogs_sbi_subscription_data_set_id(subscription_data, id);
ogs_assert(subscription_data->id);
subscription_data->req_nf_type = SubscriptionData->req_nf_type;
if (SubscriptionData->req_nf_instance_id) {
subscription_data->req_nf_instance_id =
ogs_strdup(SubscriptionData->req_nf_instance_id);
if (!subscription_data->req_nf_instance_id) {
ogs_error("ogs_strdup() failed");
ogs_sbi_subscription_data_remove(subscription_data);
return false;
}
}
if (SubscriptionData->subscription_id) {
ogs_warn("[%s] NF should not send SubscriptionID",
SubscriptionData->subscription_id);
ogs_free(SubscriptionData->subscription_id);
}
SubscriptionData->subscription_id = ogs_strdup(subscription_data->id);
if (!SubscriptionData->subscription_id) {
ogs_error("ogs_strdup() failed");
ogs_sbi_subscription_data_remove(subscription_data);
return false;
}
if (SubscriptionData->requester_features) {
subscription_data->requester_features =
ogs_uint64_from_string(SubscriptionData->requester_features);
/* No need to send SubscriptionData->requester_features to the NF */
ogs_free(SubscriptionData->requester_features);
SubscriptionData->requester_features = NULL;
} else {
subscription_data->requester_features = 0;
}
OGS_SBI_FEATURES_SET(subscription_data->nrf_supported_features,
OGS_SBI_NNRF_NFM_SERVICE_MAP);
SubscriptionData->nrf_supported_features =
ogs_uint64_to_string(subscription_data->nrf_supported_features);
if (!SubscriptionData->nrf_supported_features) {
ogs_error("ogs_strdup() failed");
ogs_sbi_subscription_data_remove(subscription_data);
return false;
}
SubscrCond = SubscriptionData->subscr_cond;
if (SubscrCond) {
/* Issue #2630 : The format of subscrCond is invalid. Must be 'oneOf'. */
if (SubscrCond->nf_type && SubscrCond->service_name) {
ogs_error("SubscrCond must be 'oneOf'");
ogs_sbi_subscription_data_remove(subscription_data);
return false;
}
if (SubscrCond->nf_type)
subscription_data->subscr_cond.nf_type = SubscrCond->nf_type;
else if (SubscrCond->service_name)
subscription_data->subscr_cond.service_name =
ogs_strdup(SubscrCond->service_name);
else {
ogs_error("No SubscrCond");
ogs_sbi_subscription_data_remove(subscription_data);
return false;
}
}
subscription_data->notification_uri =
ogs_strdup(SubscriptionData->nf_status_notification_uri);
ogs_assert(subscription_data->notification_uri);
rc = ogs_sbi_getaddr_from_uri(&scheme, &fqdn, &fqdn_port, &addr, &addr6,
subscription_data->notification_uri);
if (rc == false || scheme == OpenAPI_uri_scheme_NULL) {
ogs_assert(true ==
ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "Invalid URI", subscription_data->notification_uri));
ogs_sbi_subscription_data_remove(subscription_data);
return false;
}
client = ogs_sbi_client_find(scheme, fqdn, fqdn_port, addr, addr6);
if (!client) {
ogs_debug("%s: ogs_sbi_client_add()", OGS_FUNC);
client = ogs_sbi_client_add(scheme, fqdn, fqdn_port, addr, addr6);
ogs_assert(client);
}
OGS_SBI_SETUP_CLIENT(subscription_data, client);
ogs_free(fqdn);
ogs_freeaddrinfo(addr);
ogs_freeaddrinfo(addr6);
/*
* The NRF validity is initially set in configuration.
*/
subscription_data->time.validity_duration =
ogs_local_conf()->time.subscription.validity_duration;
if (subscription_data->time.validity_duration) {
SubscriptionData->validity_time = ogs_sbi_localtime_string(
ogs_time_now() + ogs_time_from_sec(
subscription_data->time.validity_duration));
ogs_assert(SubscriptionData->validity_time);
if (!subscription_data->t_validity) {
subscription_data->t_validity =
ogs_timer_add(ogs_app()->timer_mgr,
nrf_timer_subscription_validity, subscription_data);
ogs_assert(subscription_data->t_validity);
}
ogs_timer_start(subscription_data->t_validity,
ogs_time_from_sec(subscription_data->time.validity_duration));
}
ogs_info("[%s] Subscription created until %s [validity_duration:%d]",
subscription_data->id,
SubscriptionData->validity_time,
subscription_data->time.validity_duration);
/* Location */
server = ogs_sbi_server_from_stream(stream);
ogs_assert(server);
memset(&header, 0, sizeof(header));
header.service.name = (char *)OGS_SBI_SERVICE_NAME_NNRF_NFM;
header.api.version = (char *)OGS_SBI_API_V1;
header.resource.component[0] =
(char *)OGS_SBI_RESOURCE_NAME_SUBSCRIPTIONS;
header.resource.component[1] = subscription_data->id;
recvmsg->http.location = ogs_sbi_server_uri(server, &header);
status = OGS_SBI_HTTP_STATUS_CREATED;
response = ogs_sbi_build_response(recvmsg, status);
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
if (recvmsg->http.location)
ogs_free(recvmsg->http.location);
return true;
}
bool nrf_nnrf_handle_nf_status_update(
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
ogs_sbi_response_t *response = NULL;
OpenAPI_list_t *PatchItemList = NULL;
OpenAPI_lnode_t *node;
ogs_sbi_message_t sendmsg;
OpenAPI_subscription_data_t SubscriptionData;
char *validity_time = NULL;
ogs_sbi_subscription_data_t *subscription_data = NULL;
ogs_assert(stream);
ogs_assert(recvmsg);
memset(&SubscriptionData, 0, sizeof(SubscriptionData));
if (!recvmsg->h.resource.component[1]) {
ogs_error("No SubscriptionId");
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No SubscriptionId", NULL));
return false;
}
subscription_data = ogs_sbi_subscription_data_find(
recvmsg->h.resource.component[1]);
if (!subscription_data) {
ogs_error("[%s] Not found", recvmsg->h.resource.component[1]);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_NOT_FOUND,
recvmsg, "Not found", recvmsg->h.resource.component[1]));
return false;
}
ogs_assert(subscription_data->id);
PatchItemList = recvmsg->PatchItemList;
if (!PatchItemList) {
ogs_error("[%s] No PatchItemList Array", subscription_data->id);
ogs_assert(true ==
ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No PatchItemList", subscription_data->id));
return false;
}
OpenAPI_list_for_each(PatchItemList, node) {
OpenAPI_patch_item_t *patch_item = node->data;
if (!patch_item) {
ogs_error("No PatchItem");
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No PatchItem", NULL));
return false;
}
if (patch_item->op != OpenAPI_patch_operation_replace) {
ogs_error("Unknown PatchItem.Operation [%s]",
OpenAPI_patch_operation_ToString(patch_item->op));
continue;
}
SWITCH(patch_item->path)
CASE(OGS_SBI_PATCH_PATH_VALIDITY_TIME)
if (patch_item->value && patch_item->value->json)
validity_time =
cJSON_GetStringValue(patch_item->value->json);
break;
DEFAULT
ogs_error("Unknown PatchItem.Path [%s]", patch_item->path);
END
}
if (validity_time) {
ogs_time_t time, validity;
if (ogs_sbi_time_from_string(&time, validity_time) == false) {
ogs_error("[%s] Subscription updated until %s [parser error]",
subscription_data->id, validity_time);
goto end;
}
validity = time - ogs_time_now();
if (validity < 0) {
ogs_error("[%s] Subscription updated until %s [validity:%d.%06d]",
subscription_data->id, validity_time,
(int)ogs_time_sec(validity), (int)ogs_time_usec(validity));
goto end;
}
/*
* The NRF validity is updated if NF sent the PATCH Request.
*/
subscription_data->time.validity_duration =
OGS_SBI_VALIDITY_SEC(validity);
if (!subscription_data->t_validity) {
subscription_data->t_validity =
ogs_timer_add(ogs_app()->timer_mgr,
nrf_timer_subscription_validity, subscription_data);
ogs_assert(subscription_data->t_validity);
}
ogs_timer_start(subscription_data->t_validity,
ogs_time_from_sec(subscription_data->time.validity_duration));
ogs_info("[%s] Subscription updated until %s "
"[duration:%d,validity:%d.%06d]",
subscription_data->id, validity_time,
subscription_data->time.validity_duration,
(int)ogs_time_sec(validity), (int)ogs_time_usec(validity));
/* To send SubscriptionData to the NF */
memset(&sendmsg, 0, sizeof(sendmsg));
sendmsg.SubscriptionData = &SubscriptionData;
/* Mandatory */
SubscriptionData.nf_status_notification_uri =
subscription_data->notification_uri;
/* Validity Time */
SubscriptionData.validity_time = ogs_sbi_localtime_string(
ogs_time_now() + ogs_time_from_sec(
subscription_data->time.validity_duration));
ogs_assert(SubscriptionData.validity_time);
response = ogs_sbi_build_response(&sendmsg, OGS_SBI_HTTP_STATUS_OK);
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
ogs_free(SubscriptionData.validity_time);
return true;
}
end:
response = ogs_sbi_build_response(
recvmsg, OGS_SBI_HTTP_STATUS_NO_CONTENT);
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
return true;
}
bool nrf_nnrf_handle_nf_status_unsubscribe(
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
ogs_sbi_response_t *response = NULL;
ogs_sbi_subscription_data_t *subscription_data = NULL;
ogs_assert(stream);
ogs_assert(recvmsg);
if (!recvmsg->h.resource.component[1]) {
ogs_error("No SubscriptionId");
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No SubscriptionId", NULL));
return false;
}
subscription_data = ogs_sbi_subscription_data_find(
recvmsg->h.resource.component[1]);
if (!subscription_data) {
ogs_error("[%s] Not found", recvmsg->h.resource.component[1]);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_NOT_FOUND,
recvmsg, "Not found", recvmsg->h.resource.component[1]));
return false;
}
ogs_assert(subscription_data->id);
ogs_sbi_subscription_data_remove(subscription_data);
response = ogs_sbi_build_response(
recvmsg, OGS_SBI_HTTP_STATUS_NO_CONTENT);
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
return true;
}
bool nrf_nnrf_handle_nf_list_retrieval(
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
ogs_sbi_message_t sendmsg;
ogs_sbi_server_t *server = NULL;
ogs_sbi_response_t *response = NULL;
ogs_sbi_nf_instance_t *nf_instance = NULL;
int i = 0;
ogs_sbi_links_t *links = NULL;
OpenAPI_lnode_t *node = NULL;
ogs_assert(stream);
server = ogs_sbi_server_from_stream(stream);
ogs_assert(recvmsg);
links = ogs_calloc(1, sizeof(*links));
ogs_assert(links);
links->items = OpenAPI_list_create();
ogs_assert(links->items);
links->self = ogs_sbi_server_uri(server, &recvmsg->h);
i = 0;
ogs_list_for_each(&ogs_sbi_self()->nf_instance_list, nf_instance) {
if (NF_INSTANCE_EXCLUDED_FROM_DISCOVERY(nf_instance))
continue;
if (recvmsg->param.nf_type &&
recvmsg->param.nf_type != nf_instance->nf_type)
continue;
if (!recvmsg->param.limit ||
(recvmsg->param.limit && i < recvmsg->param.limit)) {
char *str = ogs_msprintf("%s/%s", links->self, nf_instance->id);
ogs_assert(str);
OpenAPI_list_add(links->items, str);
}
i++;
}
ogs_assert(links->self);
memset(&sendmsg, 0, sizeof(sendmsg));
sendmsg.links = links;
sendmsg.http.content_type = (char *)OGS_SBI_CONTENT_3GPPHAL_TYPE;
response = ogs_sbi_build_response(&sendmsg, OGS_SBI_HTTP_STATUS_OK);
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
OpenAPI_list_for_each(links->items, node) {
if (!node->data) continue;
ogs_free(node->data);
}
OpenAPI_list_free(links->items);
ogs_free(links->self);
ogs_free(links);
return true;
}
bool nrf_nnrf_handle_nf_profile_retrieval(
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
ogs_sbi_message_t sendmsg;
ogs_sbi_response_t *response = NULL;
ogs_sbi_nf_instance_t *nf_instance = NULL;
ogs_assert(stream);
ogs_assert(recvmsg);
ogs_assert(recvmsg->h.resource.component[1]);
nf_instance = ogs_sbi_nf_instance_find(recvmsg->h.resource.component[1]);
if (!nf_instance) {
ogs_error("Not found [%s]", recvmsg->h.resource.component[1]);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_NOT_FOUND,
recvmsg, "Not found", recvmsg->h.resource.component[1]));
return false;
}
memset(&sendmsg, 0, sizeof(sendmsg));
sendmsg.NFProfile = ogs_nnrf_nfm_build_nf_profile(
nf_instance, NULL, NULL, true);
if (!sendmsg.NFProfile) {
ogs_error("ogs_nnrf_nfm_build_nf_profile() failed");
return false;
}
response = ogs_sbi_build_response(&sendmsg, OGS_SBI_HTTP_STATUS_OK);
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
ogs_nnrf_nfm_free_nf_profile(sendmsg.NFProfile);
return true;
}
bool nrf_nnrf_handle_nf_discover(
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
ogs_sbi_message_t sendmsg;
ogs_sbi_response_t *response = NULL;
ogs_sbi_nf_instance_t *nf_instance = NULL;
ogs_sbi_discovery_option_t *discovery_option = NULL;
OpenAPI_search_result_t *SearchResult = NULL;
OpenAPI_nf_profile_t *NFProfile = NULL;
OpenAPI_lnode_t *node = NULL;
int i;
ogs_assert(stream);
ogs_assert(recvmsg);
if (!recvmsg->param.target_nf_type) {
ogs_error("No target-nf-type [%s]", recvmsg->h.uri);
ogs_assert(true ==
ogs_sbi_server_send_error(stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No target-nf-type", NULL));
return false;
}
if (!recvmsg->param.requester_nf_type) {
ogs_error("No requester-nf-type [%s]", recvmsg->h.uri);
ogs_assert(true ==
ogs_sbi_server_send_error(stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
recvmsg, "No requester-nf-type", NULL));
return false;
}
ogs_debug("NF-Discover : Requester[%s] Target[%s]",
OpenAPI_nf_type_ToString(recvmsg->param.requester_nf_type),
OpenAPI_nf_type_ToString(recvmsg->param.target_nf_type));
if (recvmsg->param.discovery_option)
discovery_option = recvmsg->param.discovery_option;
if (discovery_option) {
if (discovery_option->target_nf_instance_id) {
ogs_debug("target-nf-instance-id[%s]",
discovery_option->target_nf_instance_id);
}
if (discovery_option->requester_nf_instance_id) {
ogs_debug("requester-nf-instance-id[%s]",
discovery_option->requester_nf_instance_id);
}
if (discovery_option->num_of_service_names) {
for (i = 0; i < discovery_option->num_of_service_names; i++)
ogs_debug("[%d] service-names[%s]", i,
discovery_option->service_names[i]);
}
if (discovery_option->num_of_snssais) {
for (i = 0; i < discovery_option->num_of_snssais; i++)
ogs_debug("[%d] snssais[SST:%d SD:0x%x]", i,
discovery_option->snssais[i].sst,
discovery_option->snssais[i].sd.v);
}
if (discovery_option->dnn) {
ogs_debug("dnn[%s]", discovery_option->dnn);
}
if (discovery_option->tai_presence) {
ogs_debug("tai[PLMN_ID:%06x,TAC:%d]",
ogs_plmn_id_hexdump(
&discovery_option->tai.plmn_id),
discovery_option->tai.tac.v);
}
if (discovery_option->target_guami) {
ogs_debug("guami[PLMN_ID:%06x,AMF_ID:%x]",
ogs_plmn_id_hexdump(
&discovery_option->target_guami->plmn_id),
ogs_amf_id_hexdump(
&discovery_option->target_guami->amf_id));
}
if (discovery_option->num_of_target_plmn_list) {
for (i = 0; i < discovery_option->num_of_target_plmn_list; i++)
ogs_debug("[%d] target-plmn-list[MCC:%03d,MNC:%03d]", i,
ogs_plmn_id_mcc(
&discovery_option->target_plmn_list[i]),
ogs_plmn_id_mnc(
&discovery_option->target_plmn_list[i]));
}
if (discovery_option->num_of_requester_plmn_list) {
for (i = 0; i < discovery_option->num_of_requester_plmn_list; i++)
ogs_debug("[%d] requester-plmn-list[MCC:%03d,MNC:%03d]", i,
ogs_plmn_id_mcc(
&discovery_option->requester_plmn_list[i]),
ogs_plmn_id_mnc(
&discovery_option->requester_plmn_list[i]));
}
if (discovery_option->requester_features) {
ogs_debug("requester-features[0x%llx]",
(long long)discovery_option->requester_features);
}
}
SearchResult = ogs_calloc(1, sizeof(*SearchResult));
ogs_assert(SearchResult);
SearchResult->nf_instances = OpenAPI_list_create();
ogs_assert(SearchResult->nf_instances);
i = 0;
ogs_list_for_each(&ogs_sbi_self()->nf_instance_list, nf_instance) {
if (NF_INSTANCE_EXCLUDED_FROM_DISCOVERY(nf_instance))
continue;
if (nf_instance->nf_type != recvmsg->param.target_nf_type)
continue;
if (ogs_sbi_nf_instance_is_allowed_nf_type(
nf_instance, recvmsg->param.requester_nf_type) == false)
continue;
if (discovery_option &&
ogs_sbi_discovery_option_is_matched(
nf_instance,
recvmsg->param.requester_nf_type,
discovery_option) == false)
continue;
if (recvmsg->param.limit && i >= recvmsg->param.limit)
break;
ogs_debug("[%s:%d] NF-Discovered [NF-Type:%s,NF-Status:%s,"
"IPv4:%d,IPv6:%d]", nf_instance->id, i,
OpenAPI_nf_type_ToString(nf_instance->nf_type),
OpenAPI_nf_status_ToString(nf_instance->nf_status),
nf_instance->num_of_ipv4, nf_instance->num_of_ipv6);
NFProfile = ogs_nnrf_nfm_build_nf_profile(
nf_instance, NULL, discovery_option,
discovery_option &&
OGS_SBI_FEATURES_IS_SET(
discovery_option->requester_features,
OGS_SBI_NNRF_DISC_SERVICE_MAP) ? true : false);
if (!NFProfile) {
ogs_error("No NFProfile");
continue;
}
OpenAPI_list_add(SearchResult->nf_instances, NFProfile);
i++;
}
if (recvmsg->param.limit) SearchResult->num_nf_inst_complete = i;
memset(&sendmsg, 0, sizeof(sendmsg));
if (SearchResult->nf_instances->count) {
/* NF-Instances are Discovered */
SearchResult->is_validity_period = true;
SearchResult->validity_period =
ogs_local_conf()->time.nf_instance.validity_duration;
ogs_assert(SearchResult->validity_period);
sendmsg.SearchResult = SearchResult;
sendmsg.http.cache_control =
ogs_msprintf("max-age=%d", SearchResult->validity_period);
ogs_assert(sendmsg.http.cache_control);
response = ogs_sbi_build_response(&sendmsg, OGS_SBI_HTTP_STATUS_OK);
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
goto cleanup;
} else if (discovery_option &&
discovery_option->num_of_target_plmn_list &&
discovery_option->num_of_requester_plmn_list) {
/* No Discovery, Try to find different PLMN */
bool rc;
ogs_sbi_nf_instance_t *nf_instance = NULL;
ogs_sbi_client_t *client = NULL;
ogs_sbi_request_t *request = NULL;
nrf_assoc_t *assoc = NULL;
ogs_list_for_each(&ogs_sbi_self()->nf_instance_list, nf_instance) {
if (NF_INSTANCE_ID_IS_SELF(nf_instance->id))
continue;
if (nf_instance->nf_type != OpenAPI_nf_type_NRF)
continue;
if (ogs_sbi_discovery_option_target_plmn_list_is_matched(
nf_instance, discovery_option) == false)
continue;
break;
}
if (!nf_instance) {
nf_instance = ogs_sbi_nf_instance_add();
ogs_assert(nf_instance);
ogs_sbi_nf_instance_set_type(nf_instance, OpenAPI_nf_type_NRF);
/*
* If nrf_nf_fsm_init() is not executed, nf_instance->sm is NULL.
*
* Since nf_instance->sm is NULL, nrf_nf_fsm_final()
* is not executed later in nrf_context_final().
*/
memcpy(nf_instance->plmn_id,
discovery_option->target_plmn_list,
sizeof(nf_instance->plmn_id));
nf_instance->num_of_plmn_id =
discovery_option->num_of_target_plmn_list;
nf_instance->fqdn = ogs_nrf_fqdn_from_plmn_id(nf_instance->plmn_id);
ogs_assert(nf_instance->fqdn);
ogs_sbi_client_associate(nf_instance);
}
client = NF_INSTANCE_CLIENT(nf_instance);
ogs_assert(client);
/*
* TS29.510
* 5.3.2.4 Service Discovery in a different PLMN
*
* Then, steps 1-2 in Figure 5.3.2.2.3-1 are executed,
* between the NRF in the Serving PLMN and the NRF in the Home PLMN.
* In this step, the presence of the PLMN ID of the Home NRF
* in the query parameter of the URI is not required.
*/
discovery_option->num_of_target_plmn_list = 0;
assoc = nrf_assoc_add(stream);
if (!assoc) {
ogs_error("nrf_assoc_add() failed");
ogs_assert(true == ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR,
recvmsg, "nrf_assoc_add() failed", NULL));
goto cleanup;
}
request = ogs_nnrf_disc_build_discover(
recvmsg->param.target_nf_type,
recvmsg->param.requester_nf_type,
discovery_option);
if (!request) {
ogs_error("ogs_nnrf_disc_build_discover() failed");
ogs_assert(true == ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR,
recvmsg, "ogs_nnrf_disc_build_discover() failed", NULL));
nrf_assoc_remove(assoc);
goto cleanup;
}
rc = ogs_sbi_send_request_to_client(
client, discover_handler, request, assoc);
if (rc == false) {
ogs_error("ogs_sbi_send_request_to_client");
ogs_assert(true == ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR,
recvmsg, "ogs_sbi_send_request_to_client() failed", NULL));
ogs_sbi_request_free(request);
nrf_assoc_remove(assoc);
goto cleanup;
}
ogs_sbi_request_free(request);
} else {
/* No Discovery */
sendmsg.SearchResult = SearchResult;
response = ogs_sbi_build_response(&sendmsg, OGS_SBI_HTTP_STATUS_OK);
ogs_assert(response);
ogs_assert(true == ogs_sbi_server_send_response(stream, response));
goto cleanup;
}
cleanup:
OpenAPI_list_for_each(SearchResult->nf_instances, node) {
NFProfile = node->data;
if (NFProfile) ogs_nnrf_nfm_free_nf_profile(NFProfile);
}
OpenAPI_list_free(SearchResult->nf_instances);
if (sendmsg.http.cache_control)
ogs_free(sendmsg.http.cache_control);
ogs_free(SearchResult);
return true;
}
static int discover_handler(
int status, ogs_sbi_response_t *response, void *data)
{
int rv;
ogs_sbi_message_t message;
nrf_assoc_t *assoc = data;
ogs_sbi_stream_t *stream = NULL;
ogs_assert(assoc);
stream = assoc->stream;
ogs_assert(stream);
if (status != OGS_OK) {
ogs_log_message(
status == OGS_DONE ? OGS_LOG_DEBUG : OGS_LOG_WARN, 0,
"response_handler() failed [%d]", status);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR, NULL,
"response_handler() failed", NULL));
nrf_assoc_remove(assoc);
return OGS_ERROR;
}
ogs_assert(response);
rv = ogs_sbi_parse_response(&message, response);
if (rv != OGS_OK) {
ogs_error("cannot parse HTTP response");
goto cleanup;
}
if (message.res_status != OGS_SBI_HTTP_STATUS_OK) {
ogs_error("NF-Discover failed [%d]", message.res_status);
goto cleanup;
}
if (!message.SearchResult) {
ogs_error("No SearchResult");
goto cleanup;
}
handle_nf_discover_search_result(message.SearchResult);
cleanup:
ogs_expect(true == ogs_sbi_server_send_response(stream, response));
nrf_assoc_remove(assoc);
ogs_sbi_message_free(&message);
return OGS_OK;
}
static void handle_nf_discover_search_result(
OpenAPI_search_result_t *SearchResult)
{
OpenAPI_lnode_t *node = NULL;
ogs_sbi_nf_instance_t *nf_instance = NULL;
ogs_assert(SearchResult);
OpenAPI_list_for_each(SearchResult->nf_instances, node) {
OpenAPI_nf_profile_t *NFProfile = NULL;
if (!node->data) continue;
NFProfile = node->data;
if (!NFProfile) {
ogs_error("No NFProfile");
continue;
}
if (!NFProfile->nf_instance_id) {
ogs_error("No NFProfile.NFInstanceId");
continue;
}
if (!NFProfile->nf_type) {
ogs_error("No NFProfile.NFType");
continue;
}
if (!NFProfile->nf_status) {
ogs_error("No NFProfile.NFStatus");
continue;
}
nf_instance = ogs_sbi_nf_instance_find(NFProfile->nf_instance_id);
if (!nf_instance) {
nf_instance = ogs_sbi_nf_instance_add();
ogs_assert(nf_instance);
ogs_sbi_nf_instance_set_id(nf_instance, NFProfile->nf_instance_id);
/*
* If nrf_nf_fsm_init() is not executed, nf_instance->sm is NULL.
*
* Since nf_instance->sm is NULL, nrf_nf_fsm_final()
* is not executed later in nrf_context_final().
*/
ogs_info("[%s:%s] (NF-discover) NF registered",
NFProfile->nf_instance_id,
OpenAPI_nf_type_ToString(NFProfile->nf_type));
} else {
ogs_warn("[%s:%s] (NF-discover) NF has already been added",
NFProfile->nf_instance_id,
OpenAPI_nf_type_ToString(NFProfile->nf_type));
}
if (NF_INSTANCE_ID_IS_OTHERS(nf_instance->id)) {
ogs_nnrf_nfm_handle_nf_profile(nf_instance, NFProfile);
ogs_sbi_client_associate(nf_instance);
switch (nf_instance->nf_type) {
case OpenAPI_nf_type_SEPP:
ogs_sbi_self()->sepp_instance = nf_instance;
break;
default:
break;
}
ogs_info("[%s:%s] (NF-discover) NF Profile updated",
nf_instance->id,
OpenAPI_nf_type_ToString(nf_instance->nf_type));
}
}
}
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