396 lines
12 KiB
C
396 lines
12 KiB
C
/*
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* Copyright (C) 2019-2022 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "sbi-path.h"
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static int server_cb(ogs_sbi_request_t *request, void *data)
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{
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pcf_event_t *e = NULL;
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int rv;
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ogs_assert(request);
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ogs_assert(data);
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e = pcf_event_new(OGS_EVENT_SBI_SERVER);
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ogs_assert(e);
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e->h.sbi.request = request;
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e->h.sbi.data = data;
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rv = ogs_queue_push(ogs_app()->queue, e);
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if (rv != OGS_OK) {
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ogs_error("ogs_queue_push() failed:%d", (int)rv);
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ogs_sbi_request_free(request);
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ogs_event_free(e);
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return OGS_ERROR;
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}
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return OGS_OK;
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}
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static int client_cb(int status, ogs_sbi_response_t *response, void *data)
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{
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pcf_event_t *e = NULL;
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int rv;
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if (status != OGS_OK) {
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ogs_log_message(
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status == OGS_DONE ? OGS_LOG_DEBUG : OGS_LOG_WARN, 0,
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"client_cb() failed [%d]", status);
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return OGS_ERROR;
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}
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ogs_assert(response);
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e = pcf_event_new(OGS_EVENT_SBI_CLIENT);
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ogs_assert(e);
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e->h.sbi.response = response;
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e->h.sbi.data = data;
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rv = ogs_queue_push(ogs_app()->queue, e);
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if (rv != OGS_OK) {
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ogs_error("ogs_queue_push() failed:%d", (int)rv);
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ogs_sbi_response_free(response);
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ogs_event_free(e);
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return OGS_ERROR;
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}
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return OGS_OK;
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}
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int pcf_sbi_open(void)
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{
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_sbi_nf_service_t *service = NULL;
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bool smpolicycontrol_enabled = false;
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bool policyauthorization_enabled = false;
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/* Add SELF NF instance */
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nf_instance = ogs_sbi_self()->nf_instance;
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ogs_assert(nf_instance);
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ogs_sbi_nf_fsm_init(nf_instance);
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/* Build NF instance information. It will be transmitted to NRF. */
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ogs_sbi_nf_instance_build_default(nf_instance, OpenAPI_nf_type_PCF);
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ogs_sbi_nf_instance_add_allowed_nf_type(nf_instance, OpenAPI_nf_type_AMF);
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ogs_sbi_nf_instance_add_allowed_nf_type(nf_instance, OpenAPI_nf_type_SMF);
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ogs_sbi_nf_instance_add_allowed_nf_type(nf_instance, OpenAPI_nf_type_SCP);
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/* Build NF service information. It will be transmitted to NRF. */
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if (ogs_sbi_nf_service_is_available(
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OGS_SBI_SERVICE_NAME_NPCF_AM_POLICY_CONTROL)) {
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service = ogs_sbi_nf_service_build_default(
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nf_instance, OGS_SBI_SERVICE_NAME_NPCF_AM_POLICY_CONTROL);
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ogs_assert(service);
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ogs_sbi_nf_service_add_version(
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service, OGS_SBI_API_V1, OGS_SBI_API_V1_0_0, NULL);
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ogs_sbi_nf_service_add_allowed_nf_type(service, OpenAPI_nf_type_AMF);
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}
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if (ogs_sbi_nf_service_is_available(
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OGS_SBI_SERVICE_NAME_NPCF_SMPOLICYCONTROL)) {
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service = ogs_sbi_nf_service_build_default(
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nf_instance, OGS_SBI_SERVICE_NAME_NPCF_SMPOLICYCONTROL);
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ogs_assert(service);
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ogs_sbi_nf_service_add_version(
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service, OGS_SBI_API_V1, OGS_SBI_API_V1_0_0, NULL);
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ogs_sbi_nf_service_add_allowed_nf_type(service, OpenAPI_nf_type_SMF);
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smpolicycontrol_enabled = true;
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}
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if (ogs_sbi_nf_service_is_available(
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OGS_SBI_SERVICE_NAME_NPCF_POLICYAUTHORIZATION)) {
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service = ogs_sbi_nf_service_build_default(
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nf_instance, OGS_SBI_SERVICE_NAME_NPCF_POLICYAUTHORIZATION);
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ogs_assert(service);
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ogs_sbi_nf_service_add_version(
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service, OGS_SBI_API_V1, OGS_SBI_API_V1_0_0, NULL);
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policyauthorization_enabled = true;
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}
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if ((smpolicycontrol_enabled == true &&
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policyauthorization_enabled == false) ||
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(smpolicycontrol_enabled == false &&
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policyauthorization_enabled == true)) {
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ogs_fatal("CHECK CONFIGURATION:");
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ogs_fatal(" %s - %s",
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OGS_SBI_SERVICE_NAME_NPCF_SMPOLICYCONTROL,
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smpolicycontrol_enabled ? "enabled" : "disabled");
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ogs_fatal(" %s - %s",
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OGS_SBI_SERVICE_NAME_NPCF_POLICYAUTHORIZATION,
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policyauthorization_enabled ? "enabled" : "disabled");
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ogs_fatal("Only one of %s and %s cannot be enabled.",
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OGS_SBI_SERVICE_NAME_NPCF_SMPOLICYCONTROL,
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OGS_SBI_SERVICE_NAME_NPCF_POLICYAUTHORIZATION);
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ogs_fatal("They can be enabled or disabled together.");
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return OGS_ERROR;
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}
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/* Initialize NRF NF Instance */
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nf_instance = ogs_sbi_self()->nrf_instance;
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if (nf_instance) {
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ogs_sbi_client_t *client = NULL;
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/* Client callback is only used when NF sends to NRF */
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client = nf_instance->client;
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ogs_assert(client);
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client->cb = client_cb;
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/* NFRegister is sent and the response is received
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* by the above client callback. */
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ogs_sbi_nf_fsm_init(nf_instance);
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}
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/* Build Subscription-Data */
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ogs_sbi_subscription_data_build_default(
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OpenAPI_nf_type_BSF, OGS_SBI_SERVICE_NAME_NBSF_MANAGEMENT);
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ogs_sbi_subscription_data_build_default(
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OpenAPI_nf_type_UDR, OGS_SBI_SERVICE_NAME_NUDR_DR);
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if (ogs_sbi_server_start_all(server_cb) != OGS_OK)
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return OGS_ERROR;
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return OGS_OK;
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}
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void pcf_sbi_close(void)
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{
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ogs_sbi_client_stop_all();
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ogs_sbi_server_stop_all();
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}
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bool pcf_sbi_send_request(ogs_sbi_nf_instance_t *nf_instance, void *data)
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{
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ogs_assert(nf_instance);
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return ogs_sbi_send_request(nf_instance, client_cb, data);
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}
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static bool pcf_sbi_discover_and_send(
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ogs_sbi_object_t *sbi_object,
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ogs_sbi_service_type_e service_type,
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ogs_sbi_discovery_option_t *discovery_option,
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ogs_sbi_build_f build,
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void *context, ogs_sbi_stream_t *stream, void *data)
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{
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ogs_sbi_xact_t *xact = NULL;
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ogs_assert(service_type);
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ogs_assert(sbi_object);
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ogs_assert(stream);
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ogs_assert(build);
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xact = ogs_sbi_xact_add(
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sbi_object, service_type, discovery_option,
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build, context, data);
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ogs_expect_or_return_val(xact, false);
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xact->assoc_stream = stream;
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if (ogs_sbi_discover_and_send(xact, client_cb) != true) {
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ogs_error("ogs_sbi_discover_and_send() failed");
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ogs_sbi_xact_remove(xact);
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return false;
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}
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return true;
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}
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bool pcf_ue_sbi_discover_and_send(
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ogs_sbi_service_type_e service_type,
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ogs_sbi_discovery_option_t *discovery_option,
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ogs_sbi_request_t *(*build)(pcf_ue_t *pcf_ue, void *data),
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pcf_ue_t *pcf_ue, ogs_sbi_stream_t *stream, void *data)
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{
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if (pcf_sbi_discover_and_send(
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&pcf_ue->sbi, service_type, discovery_option,
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(ogs_sbi_build_f)build, pcf_ue, stream, data) != true) {
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ogs_error("pcf_ue_sbi_discover_and_send() failed");
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_GATEWAY_TIMEOUT, NULL,
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"Cannot discover", pcf_ue->supi));
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return false;
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}
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return true;
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}
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bool pcf_sess_sbi_discover_only(
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pcf_sess_t *sess, ogs_sbi_stream_t *stream,
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ogs_sbi_service_type_e service_type)
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{
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ogs_sbi_xact_t *xact = NULL;
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ogs_assert(sess);
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ogs_assert(service_type);
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xact = ogs_sbi_xact_add(&sess->sbi, service_type, NULL, NULL, NULL, NULL);
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ogs_expect_or_return_val(xact, false);
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xact->assoc_stream = stream;
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return ogs_sbi_discover_only(xact, client_cb);
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}
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bool pcf_sess_sbi_discover_and_send(
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ogs_sbi_service_type_e service_type,
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ogs_sbi_discovery_option_t *discovery_option,
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ogs_sbi_request_t *(*build)(pcf_sess_t *sess, void *data),
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pcf_sess_t *sess, ogs_sbi_stream_t *stream, void *data)
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{
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if (pcf_sbi_discover_and_send(
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&sess->sbi, service_type, discovery_option,
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(ogs_sbi_build_f)build, sess, stream, data) != true) {
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ogs_error("pcf_sess_sbi_discover_and_send() failed");
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_GATEWAY_TIMEOUT, NULL,
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"Cannot discover", NULL));
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return false;
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}
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return true;
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}
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static int client_notify_cb(
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int status, ogs_sbi_response_t *response, void *data)
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{
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int rv;
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ogs_sbi_message_t message;
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if (status != OGS_OK) {
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ogs_log_message(
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status == OGS_DONE ? OGS_LOG_DEBUG : OGS_LOG_WARN, 0,
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"client_notify_cb() failed [%d]", status);
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return OGS_ERROR;
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}
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ogs_assert(response);
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rv = ogs_sbi_parse_response(&message, response);
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if (rv != OGS_OK) {
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ogs_error("cannot parse HTTP response");
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ogs_sbi_message_free(&message);
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ogs_sbi_response_free(response);
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return OGS_ERROR;
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}
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if (message.res_status != OGS_SBI_HTTP_STATUS_NO_CONTENT)
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ogs_error("SmContextStatusNotification failed [%d]",
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message.res_status);
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ogs_sbi_message_free(&message);
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ogs_sbi_response_free(response);
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return OGS_OK;
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}
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static int client_delete_notify_cb(
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int status, ogs_sbi_response_t *response, void *data)
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{
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pcf_app_t *app_session = data;
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ogs_assert(app_session);
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client_notify_cb(status, response, data);
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pcf_app_remove(app_session);
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return OGS_OK;
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}
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bool pcf_sbi_send_am_policy_control_notify(pcf_ue_t *pcf_ue)
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{
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ogs_sbi_request_t *request = NULL;
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ogs_sbi_client_t *client = NULL;
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ogs_assert(pcf_ue);
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client = pcf_ue->namf.client;
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ogs_assert(client);
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request = pcf_namf_callback_build_am_policy_control(pcf_ue, NULL);
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ogs_expect_or_return_val(request, false);
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return ogs_sbi_client_send_request(client, client_notify_cb, request, NULL);
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}
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bool pcf_sbi_send_smpolicycontrol_update_notify(
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pcf_sess_t *sess, OpenAPI_sm_policy_decision_t *SmPolicyDecision)
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{
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ogs_sbi_request_t *request = NULL;
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ogs_sbi_client_t *client = NULL;
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ogs_assert(sess);
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client = sess->nsmf.client;
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ogs_assert(client);
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request = pcf_nsmf_callback_build_smpolicycontrol_update(
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sess, SmPolicyDecision);
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ogs_expect_or_return_val(request, false);
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return ogs_sbi_client_send_request(client, client_notify_cb, request, NULL);
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}
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bool pcf_sbi_send_smpolicycontrol_delete_notify(
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pcf_sess_t *sess, pcf_app_t *app_session,
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OpenAPI_sm_policy_decision_t *SmPolicyDecision)
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{
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ogs_sbi_request_t *request = NULL;
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ogs_sbi_client_t *client = NULL;
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ogs_assert(sess);
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client = sess->nsmf.client;
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ogs_assert(client);
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request = pcf_nsmf_callback_build_smpolicycontrol_update(
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sess, SmPolicyDecision);
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ogs_expect_or_return_val(request, false);
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return ogs_sbi_client_send_request(
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client, client_delete_notify_cb, request, app_session);
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}
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bool pcf_sbi_send_smpolicycontrol_terminate_notify(pcf_sess_t *sess)
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{
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ogs_sbi_request_t *request = NULL;
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ogs_sbi_client_t *client = NULL;
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ogs_assert(sess);
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client = sess->nsmf.client;
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ogs_assert(client);
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request = pcf_nsmf_callback_build_smpolicycontrol_terminate(sess, NULL);
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ogs_expect_or_return_val(request, false);
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return ogs_sbi_client_send_request(client, client_notify_cb, request, NULL);
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}
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bool pcf_sbi_send_policyauthorization_terminate_notify(pcf_app_t *app)
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{
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ogs_sbi_request_t *request = NULL;
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ogs_sbi_client_t *client = NULL;
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ogs_assert(app);
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client = app->naf.client;
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ogs_assert(client);
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request = pcf_naf_callback_build_policyauthorization_terminate(app, NULL);
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ogs_expect_or_return_val(request, false);
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return ogs_sbi_client_send_request(client, client_notify_cb, request, NULL);
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}
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