forked from acouzens/open5gs
430 lines
13 KiB
C
430 lines
13 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 "context.h"
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#include "ngap-path.h"
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#include "sbi-path.h"
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int smf_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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/*
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* SMF can only run to support 4G EPC mode.
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*
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* If the SMF is only running in 4G EPC mode,
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* it should not send NFRegister/NFStatusSubscribe messages to the NRF.
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*/
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if (ogs_list_count(&ogs_sbi_self()->server_list) == 0)
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return OGS_OK;
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/* Initialize 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);
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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_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(OGS_SBI_SERVICE_NAME_NSMF_PDUSESSION)) {
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service = ogs_sbi_nf_service_build_default(
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nf_instance, OGS_SBI_SERVICE_NAME_NSMF_PDUSESSION);
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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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/* 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_nf_fsm_init(nf_instance);
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/* Setup Subscription-Data */
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ogs_sbi_subscription_spec_add(
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OpenAPI_nf_type_AMF, OGS_SBI_SERVICE_NAME_NAMF_COMM);
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ogs_sbi_subscription_spec_add(
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OpenAPI_nf_type_PCF, OGS_SBI_SERVICE_NAME_NPCF_SMPOLICYCONTROL);
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ogs_sbi_subscription_spec_add(
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OpenAPI_nf_type_UDM, OGS_SBI_SERVICE_NAME_NUDM_SDM);
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if (ogs_sbi_server_start_all(ogs_sbi_server_handler) != 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 smf_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 smf_sbi_send_request(
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ogs_sbi_nf_instance_t *nf_instance, ogs_sbi_xact_t *xact)
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{
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ogs_assert(nf_instance);
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ogs_assert(xact);
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return ogs_sbi_send_request_to_nf_instance(nf_instance, xact);
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}
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int smf_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)(smf_sess_t *sess, void *data),
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smf_sess_t *sess, ogs_sbi_stream_t *stream, int state, void *data)
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{
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smf_ue_t *smf_ue = NULL;
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ogs_sbi_xact_t *xact = NULL;
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int r;
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ogs_assert(service_type);
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ogs_assert(sess);
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smf_ue = sess->smf_ue;
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ogs_assert(smf_ue);
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ogs_assert(build);
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xact = ogs_sbi_xact_add(
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&sess->sbi, service_type, discovery_option,
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(ogs_sbi_build_f)build, sess, data);
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if (!xact) {
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ogs_error("smf_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", smf_ue->supi));
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return OGS_ERROR;
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}
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xact->state = state;
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xact->assoc_stream = stream;
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r = ogs_sbi_discover_and_send(xact);
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if (r != OGS_OK) {
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ogs_error("smf_sbi_discover_and_send() failed");
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ogs_sbi_xact_remove(xact);
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if (stream)
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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", smf_ue->supi));
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return r;
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}
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return OGS_OK;
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}
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void smf_namf_comm_send_n1_n2_message_transfer(
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smf_sess_t *sess, smf_n1_n2_message_transfer_param_t *param)
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{
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smf_ue_t *smf_ue = NULL;
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ogs_sbi_xact_t *xact = NULL;
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ogs_sbi_discovery_option_t *discovery_option = NULL;
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int r;
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ogs_assert(sess);
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smf_ue = sess->smf_ue;
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ogs_assert(smf_ue);
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ogs_assert(param);
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ogs_assert(param->state);
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ogs_assert(param->n1smbuf || param->n2smbuf);
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discovery_option = ogs_sbi_discovery_option_new();
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ogs_assert(discovery_option);
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ogs_sbi_discovery_option_set_target_nf_instance_id(
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discovery_option, sess->serving_nf_id);
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xact = ogs_sbi_xact_add(
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&sess->sbi, OGS_SBI_SERVICE_TYPE_NAMF_COMM, discovery_option,
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(ogs_sbi_build_f)smf_namf_comm_build_n1_n2_message_transfer,
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sess, param);
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if (!xact) {
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ogs_error("smf_namf_comm_send_n1_n2_message_transfer() failed");
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return;
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}
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xact->state = param->state;
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r = ogs_sbi_discover_and_send(xact);
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if (r != OGS_OK) {
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ogs_error("smf_namf_comm_send_n1_n2_message_transfer() failed");
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ogs_sbi_xact_remove(xact);
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ogs_assert(r != OGS_ERROR);
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}
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}
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void smf_namf_comm_send_n1_n2_pdu_establishment_reject(
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smf_sess_t *sess)
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{
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smf_n1_n2_message_transfer_param_t param;
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memset(¶m, 0, sizeof(param));
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param.state = SMF_NETWORK_REQUESTED_PDU_SESSION_RELEASE;
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param.n1smbuf = gsm_build_pdu_session_establishment_reject(sess,
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OGS_5GSM_CAUSE_NETWORK_FAILURE);
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ogs_assert(param.n1smbuf);
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smf_namf_comm_send_n1_n2_message_transfer(sess, ¶m);
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}
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void smf_sbi_send_sm_context_create_error(
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ogs_sbi_stream_t *stream,
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int status, const char *title, const char *detail,
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ogs_pkbuf_t *n1smbuf)
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{
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ogs_sbi_message_t sendmsg;
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ogs_sbi_response_t *response = NULL;
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OpenAPI_sm_context_create_error_t SmContextCreateError;
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OpenAPI_ext_problem_details_t problem;
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OpenAPI_ref_to_binary_data_t n1SmMsg;
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ogs_assert(stream);
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memset(&problem, 0, sizeof(problem));
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if (status) {
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problem.is_status = true;
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problem.status = status;
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}
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problem.title = (char*)title;
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problem.detail = (char*)detail;
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memset(&sendmsg, 0, sizeof(sendmsg));
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sendmsg.SmContextCreateError = &SmContextCreateError;
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memset(&SmContextCreateError, 0, sizeof(SmContextCreateError));
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SmContextCreateError.error = &problem;
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if (n1smbuf) {
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SmContextCreateError.n1_sm_msg = &n1SmMsg;
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n1SmMsg.content_id = (char *)OGS_SBI_CONTENT_5GNAS_SM_ID;
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sendmsg.part[0].content_id = (char *)OGS_SBI_CONTENT_5GNAS_SM_ID;
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sendmsg.part[0].content_type = (char *)OGS_SBI_CONTENT_5GNAS_TYPE;
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sendmsg.part[0].pkbuf = n1smbuf;
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sendmsg.num_of_part = 1;
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}
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response = ogs_sbi_build_response(&sendmsg, problem.status);
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ogs_assert(response);
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ogs_assert(true == ogs_sbi_server_send_response(stream, response));
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smf_metrics_inst_by_cause_add(problem.status,
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SMF_METR_CTR_SM_PDUSESSIONCREATIONFAIL, 1);
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if (n1smbuf)
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ogs_pkbuf_free(n1smbuf);
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}
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void smf_sbi_send_sm_context_updated_data(
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smf_sess_t *sess, ogs_sbi_stream_t *stream,
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OpenAPI_up_cnx_state_e up_cnx_state,
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OpenAPI_ho_state_e ho_state,
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ogs_pkbuf_t *n1smbuf,
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OpenAPI_n2_sm_info_type_e n2type, ogs_pkbuf_t *n2smbuf)
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{
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int i;
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ogs_sbi_message_t sendmsg;
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ogs_sbi_response_t *response = NULL;
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OpenAPI_sm_context_updated_data_t SmContextUpdatedData;
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OpenAPI_ref_to_binary_data_t n1SmMsg;
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OpenAPI_ref_to_binary_data_t n2SmInfo;
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ogs_assert(sess);
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ogs_assert(stream);
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ogs_assert(up_cnx_state != OpenAPI_up_cnx_state_NULL ||
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ho_state != OpenAPI_ho_state_NULL ||
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n1smbuf || n2smbuf);
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memset(&sendmsg, 0, sizeof(sendmsg));
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memset(&SmContextUpdatedData, 0, sizeof(SmContextUpdatedData));
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/* up_cnx_state */
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SmContextUpdatedData.up_cnx_state = up_cnx_state;
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/* ho_state */
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SmContextUpdatedData.ho_state = ho_state;
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/* n1smbuf */
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if (n1smbuf) {
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n1SmMsg.content_id = (char *)OGS_SBI_CONTENT_5GNAS_SM_ID;
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SmContextUpdatedData.n1_sm_msg = &n1SmMsg;
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sendmsg.part[sendmsg.num_of_part].content_id =
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(char *)OGS_SBI_CONTENT_5GNAS_SM_ID;
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sendmsg.part[sendmsg.num_of_part].content_type =
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(char *)OGS_SBI_CONTENT_5GNAS_TYPE;
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sendmsg.part[sendmsg.num_of_part].pkbuf = n1smbuf;
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sendmsg.num_of_part++;
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}
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/* n2smbuf */
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if (n2smbuf) {
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ogs_assert(n2type);
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SmContextUpdatedData.n2_sm_info_type = n2type;
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n2SmInfo.content_id = (char *)OGS_SBI_CONTENT_NGAP_SM_ID;
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SmContextUpdatedData.n2_sm_info = &n2SmInfo;
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sendmsg.part[sendmsg.num_of_part].content_id =
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(char *)OGS_SBI_CONTENT_NGAP_SM_ID;
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sendmsg.part[sendmsg.num_of_part].content_type =
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(char *)OGS_SBI_CONTENT_NGAP_TYPE;
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sendmsg.part[sendmsg.num_of_part].pkbuf = n2smbuf;
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sendmsg.num_of_part++;
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}
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sendmsg.SmContextUpdatedData = &SmContextUpdatedData;
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response = ogs_sbi_build_response(&sendmsg, OGS_SBI_HTTP_STATUS_OK);
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ogs_assert(response);
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ogs_assert(true == ogs_sbi_server_send_response(stream, response));
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for (i = 0; i < sendmsg.num_of_part; i++)
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ogs_pkbuf_free(sendmsg.part[i].pkbuf);
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}
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void smf_sbi_send_sm_context_update_error(
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ogs_sbi_stream_t *stream,
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int status, const char *title, const char *detail,
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ogs_pkbuf_t *n1smbuf, ogs_pkbuf_t *n2smbuf)
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{
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ogs_sbi_message_t sendmsg;
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ogs_sbi_response_t *response = NULL;
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OpenAPI_sm_context_update_error_t SmContextUpdateError;
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OpenAPI_ext_problem_details_t problem;
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OpenAPI_ref_to_binary_data_t n1SmMsg;
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OpenAPI_ref_to_binary_data_t n2SmInfo;
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ogs_assert(stream);
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memset(&problem, 0, sizeof(problem));
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if (status) {
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problem.is_status = true;
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problem.status = status;
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}
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problem.title = (char*)title;
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problem.detail = (char*)detail;
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memset(&sendmsg, 0, sizeof(sendmsg));
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sendmsg.SmContextUpdateError = &SmContextUpdateError;
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memset(&SmContextUpdateError, 0, sizeof(SmContextUpdateError));
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SmContextUpdateError.error = &problem;
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if (n1smbuf) {
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SmContextUpdateError.n1_sm_msg = &n1SmMsg;
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n1SmMsg.content_id = (char *)OGS_SBI_CONTENT_5GNAS_SM_ID;
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sendmsg.part[sendmsg.num_of_part].content_id =
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(char *)OGS_SBI_CONTENT_5GNAS_SM_ID;
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sendmsg.part[sendmsg.num_of_part].content_type =
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(char *)OGS_SBI_CONTENT_5GNAS_TYPE;
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sendmsg.part[sendmsg.num_of_part].pkbuf = n1smbuf;
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sendmsg.num_of_part++;
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}
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if (n2smbuf) {
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SmContextUpdateError.n2_sm_info = &n2SmInfo;
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n2SmInfo.content_id = (char *)OGS_SBI_CONTENT_NGAP_SM_ID;
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sendmsg.part[sendmsg.num_of_part].content_id =
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(char *)OGS_SBI_CONTENT_NGAP_SM_ID;
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sendmsg.part[sendmsg.num_of_part].content_type =
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(char *)OGS_SBI_CONTENT_NGAP_TYPE;
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sendmsg.part[sendmsg.num_of_part].pkbuf = n2smbuf;
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sendmsg.num_of_part++;
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}
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response = ogs_sbi_build_response(&sendmsg, problem.status);
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ogs_assert(response);
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ogs_assert(true == ogs_sbi_server_send_response(stream, response));
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if (n1smbuf)
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ogs_pkbuf_free(n1smbuf);
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if (n2smbuf)
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ogs_pkbuf_free(n2smbuf);
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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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bool smf_sbi_send_sm_context_status_notify(smf_sess_t *sess)
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{
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bool rc;
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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->namf.client;
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ogs_assert(client);
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request = smf_namf_callback_build_sm_context_status(sess, NULL);
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if (!request) {
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ogs_error("smf_namf_callback_build_sm_context_status() failed");
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return false;
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}
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rc = ogs_sbi_send_request_to_client(
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client, client_notify_cb, request, NULL);
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ogs_expect(rc == true);
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ogs_sbi_request_free(request);
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return rc;
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}
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