forked from acouzens/open5gs
405 lines
12 KiB
C
405 lines
12 KiB
C
/*
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* Copyright (C) 2019 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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static int server_cb(ogs_sbi_server_t *server,
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ogs_sbi_session_t *session, ogs_sbi_request_t *request)
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{
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smf_event_t *e = NULL;
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int rv;
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ogs_assert(session);
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ogs_assert(request);
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e = smf_event_new(SMF_EVT_SBI_SERVER);
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ogs_assert(e);
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e->sbi.server = server;
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e->sbi.session = session;
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e->sbi.request = request;
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rv = ogs_queue_push(smf_self()->queue, e);
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if (rv != OGS_OK) {
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ogs_warn("ogs_queue_push() failed:%d", (int)rv);
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smf_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(ogs_sbi_response_t *response, void *data)
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{
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smf_event_t *e = NULL;
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int rv;
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ogs_assert(response);
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e = smf_event_new(SMF_EVT_SBI_CLIENT);
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ogs_assert(e);
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e->sbi.response = response;
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e->sbi.data = data;
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rv = ogs_queue_push(smf_self()->queue, e);
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if (rv != OGS_OK) {
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ogs_warn("ogs_queue_push() failed:%d", (int)rv);
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smf_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 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_server_start_all(server_cb);
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/*
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* The connection between NF and NRF is a little special.
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*
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* NF and NRF share nf_instance. I get the NRF EndPoint(client) information
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* the configuration file via lib/sbi/context.c.
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* And, the NFService information will be transmitted to NRF.
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*
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* ogs_sbi_self()->nf_instance_id means NF's InstanceId.
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*/
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ogs_list_for_each(&ogs_sbi_self()->nf_instance_list, nf_instance) {
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ogs_sbi_nf_service_t *service = NULL;
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ogs_sbi_client_t *client = NULL;
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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, smf_self()->nf_type);
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/* Build NF service information. It will be transmitted to NRF. */
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service = ogs_sbi_nf_service_build_default(nf_instance,
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(char*)OGS_SBI_SERVICE_NAME_NSMF_PDUSESSION);
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ogs_assert(service);
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ogs_sbi_nf_service_add_version(service, (char*)OGS_SBI_API_V1,
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(char*)OGS_SBI_API_V1_0_0, 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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smf_nf_fsm_init(nf_instance);
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}
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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_server_stop_all();
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}
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void smf_sbi_discover_and_send(
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OpenAPI_nf_type_e nf_type, smf_sess_t *sess, void *data,
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ogs_sbi_request_t *(*build)(smf_sess_t *sess, void *data))
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{
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ogs_sbi_session_t *session = NULL;
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smf_ue_t *smf_ue = NULL;
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ogs_assert(nf_type);
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ogs_assert(build);
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ogs_assert(sess);
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session = sess->sbi.session;
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ogs_assert(session);
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smf_ue = sess->smf_ue;
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ogs_assert(smf_ue);
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sess->sbi.nf_state_registered = smf_nf_state_registered;
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sess->sbi.client_wait.duration =
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smf_timer_cfg(SMF_TIMER_SBI_CLIENT_WAIT)->duration;
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sess->sbi.client_cb = client_cb;
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if (ogs_sbi_discover_and_send(
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nf_type, &sess->sbi, data, (ogs_sbi_build_f)build) != true) {
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ogs_sbi_server_send_error(session,
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OGS_SBI_HTTP_STATUS_GATEWAY_TIMEOUT, NULL,
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"Cannot discover", smf_ue->supi);
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}
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}
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void smf_sbi_send_response(smf_sess_t *sess, int status)
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{
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ogs_sbi_session_t *session = NULL;
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ogs_sbi_message_t sendmsg;
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ogs_sbi_response_t *response = NULL;
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ogs_assert(sess);
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session = sess->sbi.session;
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ogs_assert(session);
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memset(&sendmsg, 0, sizeof(sendmsg));
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response = ogs_sbi_build_response(&sendmsg, status);
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ogs_assert(response);
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ogs_sbi_server_send_response(session, response);
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}
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void smf_sbi_send_sm_context_create_error(
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ogs_sbi_session_t *session,
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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_problem_details_t problem;
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OpenAPI_ref_to_binary_data_t n1SmMsg;
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ogs_assert(session);
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memset(&problem, 0, sizeof(problem));
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problem.status = status;
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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_sbi_server_send_response(session, response);
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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(smf_sess_t *sess)
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{
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ogs_sbi_session_t *session = NULL;
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int status;
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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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ogs_assert(sess);
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session = sess->sbi.session;
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ogs_assert(session);
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memset(&sendmsg, 0, sizeof(sendmsg));
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if (sess->smfUpCnxState == OpenAPI_up_cnx_state_ACTIVATED &&
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sess->pfcp_5gc_modify.outer_header_creation_update == true) {
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status = OGS_SBI_HTTP_STATUS_NO_CONTENT;
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} else {
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memset(&SmContextUpdatedData, 0, sizeof(SmContextUpdatedData));
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SmContextUpdatedData.up_cnx_state = sess->smfUpCnxState;
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sendmsg.SmContextUpdatedData = &SmContextUpdatedData;
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status = OGS_SBI_HTTP_STATUS_OK;
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}
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response = ogs_sbi_build_response(&sendmsg, status);
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ogs_assert(response);
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ogs_sbi_server_send_response(session, response);
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}
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void smf_sbi_send_sm_context_updated_data_in_session_deletion(smf_sess_t *sess)
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{
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int i;
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ogs_sbi_session_t *session = NULL;
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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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session = sess->sbi.session;
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ogs_assert(session);
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memset(&sendmsg, 0, sizeof(sendmsg));
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memset(&SmContextUpdatedData, 0, sizeof(SmContextUpdatedData));
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sendmsg.num_of_part = 0;
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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].pkbuf =
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gsm_build_pdu_session_release_command(
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sess, OGS_5GSM_CAUSE_REGULAR_DEACTIVATION);
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if (sendmsg.part[sendmsg.num_of_part].pkbuf) {
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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.num_of_part++;
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}
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SmContextUpdatedData.n2_sm_info_type =
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OpenAPI_n2_sm_info_type_PDU_RES_REL_CMD;
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SmContextUpdatedData.n2_sm_info = &n2SmInfo;
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memset(&n2SmInfo, 0, sizeof(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].pkbuf =
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ngap_build_pdu_session_resource_release_command_transfer(
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NGAP_Cause_PR_nas, NGAP_CauseNas_normal_release);
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if (sendmsg.part[sendmsg.num_of_part].pkbuf) {
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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.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_sbi_server_send_response(session, 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_session_t *session,
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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_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(session);
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memset(&problem, 0, sizeof(problem));
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problem.status = status;
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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_sbi_server_send_response(session, 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(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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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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void smf_sbi_send_sm_context_status_notify(smf_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->namf.client;
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ogs_assert(client);
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client->cb = client_cb;
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request = smf_namf_callback_build_sm_context_status(sess, NULL);
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ogs_assert(request);
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ogs_sbi_client_send_request(client, client_notify_cb, request, NULL);
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ogs_sbi_request_free(request);
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}
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