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open5gs/src/smf/smf-sm.c

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/*
* Copyright (C) 2019 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 "context.h"
#include "gtp-path.h"
#include "fd-path.h"
#include "pfcp-path.h"
#include "sbi-path.h"
#include "s5c-handler.h"
#include "gn-handler.h"
#include "gx-handler.h"
#include "gy-handler.h"
#include "nnrf-handler.h"
#include "namf-handler.h"
#include "npcf-handler.h"
void smf_state_initial(ogs_fsm_t *s, smf_event_t *e)
{
smf_sm_debug(e);
ogs_assert(s);
OGS_FSM_TRAN(s, &smf_state_operational);
}
void smf_state_final(ogs_fsm_t *s, smf_event_t *e)
{
smf_sm_debug(e);
ogs_assert(s);
}
void smf_state_operational(ogs_fsm_t *s, smf_event_t *e)
{
int rv;
const char *api_version = NULL;
ogs_pkbuf_t *recvbuf = NULL;
smf_sess_t *sess = NULL;
smf_ue_t *smf_ue = NULL;
ogs_gtp_node_t *gnode = NULL;
ogs_gtp_xact_t *gtp_xact = NULL;
ogs_gtp2_message_t gtp2_message;
ogs_gtp1_message_t gtp1_message;
ogs_diam_gx_message_t *gx_message = NULL;
ogs_diam_gy_message_t *gy_message = NULL;
ogs_diam_s6b_message_t *s6b_message = NULL;
ogs_pfcp_node_t *pfcp_node = NULL;
ogs_pfcp_xact_t *pfcp_xact = NULL;
ogs_pfcp_message_t pfcp_message;
ogs_sbi_stream_t *stream = NULL;
ogs_sbi_request_t *sbi_request = NULL;
ogs_sbi_nf_instance_t *nf_instance = NULL;
ogs_sbi_subscription_t *subscription = NULL;
ogs_sbi_response_t *sbi_response = NULL;
ogs_sbi_message_t sbi_message;
ogs_sbi_xact_t *sbi_xact = NULL;
ogs_nas_5gs_message_t nas_message;
ogs_pkbuf_t *pkbuf = NULL;
smf_sm_debug(e);
ogs_assert(s);
switch (e->id) {
case OGS_FSM_ENTRY_SIG:
break;
case OGS_FSM_EXIT_SIG:
break;
case SMF_EVT_S5C_MESSAGE:
ogs_assert(e);
recvbuf = e->pkbuf;
ogs_assert(recvbuf);
if (ogs_gtp2_parse_msg(&gtp2_message, recvbuf) != OGS_OK) {
ogs_error("ogs_gtp2_parse_msg() failed");
ogs_pkbuf_free(recvbuf);
break;
}
e->gtp2_message = &gtp2_message;
gnode = e->gnode;
ogs_assert(gnode);
rv = ogs_gtp_xact_receive(gnode, &gtp2_message.h, &gtp_xact);
if (rv != OGS_OK) {
ogs_pkbuf_free(recvbuf);
break;
}
e->gtp_xact = gtp_xact;
if (gtp2_message.h.teid != 0) {
sess = smf_sess_find_by_teid(gtp2_message.h.teid);
}
switch(gtp2_message.h.type) {
case OGS_GTP2_ECHO_REQUEST_TYPE:
smf_s5c_handle_echo_request(gtp_xact, &gtp2_message.echo_request);
break;
case OGS_GTP2_ECHO_RESPONSE_TYPE:
smf_s5c_handle_echo_response(gtp_xact, &gtp2_message.echo_response);
break;
case OGS_GTP2_CREATE_SESSION_REQUEST_TYPE:
if (gtp2_message.h.teid == 0) {
ogs_expect(!sess);
sess = smf_sess_add_by_gtp2_message(&gtp2_message);
if (sess)
OGS_SETUP_GTP_NODE(sess, gnode);
}
if (!sess) {
ogs_gtp2_send_error_message(gtp_xact, 0,
OGS_GTP2_CREATE_SESSION_RESPONSE_TYPE,
OGS_GTP2_CAUSE_CONTEXT_NOT_FOUND);
break;
}
e->sess = sess;
ogs_fsm_dispatch(&sess->sm, e);
break;
case OGS_GTP2_DELETE_SESSION_REQUEST_TYPE:
if (!sess) {
ogs_gtp2_send_error_message(gtp_xact, 0,
OGS_GTP2_DELETE_SESSION_RESPONSE_TYPE,
OGS_GTP2_CAUSE_CONTEXT_NOT_FOUND);
break;
}
e->sess = sess;
ogs_fsm_dispatch(&sess->sm, e);
break;
case OGS_GTP2_MODIFY_BEARER_REQUEST_TYPE:
smf_s5c_handle_modify_bearer_request(
sess, gtp_xact, recvbuf, &gtp2_message.modify_bearer_request);
break;
case OGS_GTP2_CREATE_BEARER_RESPONSE_TYPE:
smf_s5c_handle_create_bearer_response(
sess, gtp_xact, &gtp2_message.create_bearer_response);
break;
case OGS_GTP2_UPDATE_BEARER_RESPONSE_TYPE:
smf_s5c_handle_update_bearer_response(
sess, gtp_xact, &gtp2_message.update_bearer_response);
break;
case OGS_GTP2_DELETE_BEARER_RESPONSE_TYPE:
if (!sess) {
/* TODO: NACK the message */
break;
}
e->sess = sess;
ogs_fsm_dispatch(&sess->sm, e);
break;
case OGS_GTP2_BEARER_RESOURCE_COMMAND_TYPE:
smf_s5c_handle_bearer_resource_command(
sess, gtp_xact, &gtp2_message.bearer_resource_command);
break;
default:
ogs_warn("Not implmeneted(type:%d)", gtp2_message.h.type);
break;
}
ogs_pkbuf_free(recvbuf);
break;
case SMF_EVT_GN_MESSAGE:
ogs_assert(e);
recvbuf = e->pkbuf;
ogs_assert(recvbuf);
if (ogs_gtp1_parse_msg(&gtp1_message, recvbuf) != OGS_OK) {
ogs_error("ogs_gtp2_parse_msg() failed");
ogs_pkbuf_free(recvbuf);
break;
}
e->gtp1_message = &gtp1_message;
if (gtp1_message.h.teid != 0) {
sess = smf_sess_find_by_teid(gtp1_message.h.teid);
}
gnode = e->gnode;
ogs_assert(gnode);
rv = ogs_gtp1_xact_receive(gnode, &gtp1_message.h, &gtp_xact);
if (rv != OGS_OK) {
ogs_pkbuf_free(recvbuf);
break;
}
e->gtp_xact = gtp_xact;
switch(gtp1_message.h.type) {
case OGS_GTP1_ECHO_REQUEST_TYPE:
smf_gn_handle_echo_request(gtp_xact, &gtp1_message.echo_request);
break;
case OGS_GTP1_ECHO_RESPONSE_TYPE:
smf_gn_handle_echo_response(gtp_xact, &gtp1_message.echo_response);
break;
case OGS_GTP1_CREATE_PDP_CONTEXT_REQUEST_TYPE:
if (gtp1_message.h.teid == 0) {
ogs_expect(!sess);
sess = smf_sess_add_by_gtp1_message(&gtp1_message);
if (sess)
OGS_SETUP_GTP_NODE(sess, gnode);
}
if (!sess) {
ogs_gtp1_send_error_message(gtp_xact, 0,
OGS_GTP1_CREATE_PDP_CONTEXT_RESPONSE_TYPE,
OGS_GTP1_CAUSE_CONTEXT_NOT_FOUND);
break;
}
e->sess = sess;
ogs_fsm_dispatch(&sess->sm, e);
break;
case OGS_GTP1_DELETE_PDP_CONTEXT_REQUEST_TYPE:
if (!sess) {
ogs_gtp1_send_error_message(gtp_xact, 0,
OGS_GTP1_DELETE_PDP_CONTEXT_RESPONSE_TYPE,
OGS_GTP1_CAUSE_NON_EXISTENT);
break;
}
e->sess = sess;
ogs_fsm_dispatch(&sess->sm, e);
break;
case OGS_GTP1_UPDATE_PDP_CONTEXT_REQUEST_TYPE:
smf_gn_handle_update_pdp_context_request(
sess, gtp_xact, &gtp1_message.update_pdp_context_request);
break;
case OGS_GTP1_ERROR_INDICATION_TYPE:
/* TS 29.060 10.1.1.4 dst port shall be the userplane port (2152) */
ogs_error("Rx unexpected Error Indication in GTPC port");
break;
default:
ogs_warn("Not implmeneted(type:%d)", gtp1_message.h.type);
break;
}
ogs_pkbuf_free(recvbuf);
break;
case SMF_EVT_GX_MESSAGE:
ogs_assert(e);
gx_message = e->gx_message;
ogs_assert(gx_message);
sess = e->sess;
ogs_assert(sess);
switch(gx_message->cmd_code) {
case OGS_DIAM_GX_CMD_CODE_CREDIT_CONTROL:
switch(gx_message->cc_request_type) {
case OGS_DIAM_GX_CC_REQUEST_TYPE_INITIAL_REQUEST:
ogs_fsm_dispatch(&sess->sm, e);
break;
case OGS_DIAM_GX_CC_REQUEST_TYPE_TERMINATION_REQUEST:
ogs_fsm_dispatch(&sess->sm, e);
break;
default:
ogs_error("Not implemented(%d)", gx_message->cc_request_type);
break;
}
break;
case OGS_DIAM_GX_CMD_RE_AUTH:
smf_gx_handle_re_auth_request(sess, gx_message);
break;
default:
ogs_error("Invalid type(%d)", gx_message->cmd_code);
break;
}
ogs_session_data_free(&gx_message->session_data);
ogs_free(gx_message);
break;
case SMF_EVT_GY_MESSAGE:
ogs_assert(e);
gy_message = e->gy_message;
ogs_assert(gy_message);
sess = e->sess;
ogs_assert(sess);
switch(gy_message->cmd_code) {
case OGS_DIAM_GY_CMD_CODE_CREDIT_CONTROL:
switch(gy_message->cc_request_type) {
case OGS_DIAM_GY_CC_REQUEST_TYPE_INITIAL_REQUEST:
ogs_fsm_dispatch(&sess->sm, e);
break;
case OGS_DIAM_GY_CC_REQUEST_TYPE_UPDATE_REQUEST:
ogs_assert(e->pfcp_xact);
smf_gy_handle_cca_update_request(
sess, gy_message, e->pfcp_xact);
break;
case OGS_DIAM_GY_CC_REQUEST_TYPE_TERMINATION_REQUEST:
ogs_fsm_dispatch(&sess->sm, e);
break;
default:
ogs_error("Not implemented(%d)", gy_message->cc_request_type);
break;
}
break;
case OGS_DIAM_GY_CMD_RE_AUTH:
smf_gy_handle_re_auth_request(sess, gy_message);
break;
default:
ogs_error("Invalid type(%d)", gy_message->cmd_code);
break;
}
ogs_free(gy_message);
break;
case SMF_EVT_S6B_MESSAGE:
ogs_assert(e);
s6b_message = e->s6b_message;
ogs_assert(s6b_message);
sess = e->sess;
ogs_assert(sess);
switch(s6b_message->cmd_code) {
case OGS_DIAM_S6B_CMD_SESSION_TERMINATION:
ogs_fsm_dispatch(&sess->sm, e);
break;
default:
ogs_error("Invalid type(%d)", s6b_message->cmd_code);
break;
}
ogs_free(s6b_message);
break;
case SMF_EVT_N4_MESSAGE:
ogs_assert(e);
recvbuf = e->pkbuf;
ogs_assert(recvbuf);
pfcp_node = e->pfcp_node;
ogs_assert(pfcp_node);
ogs_assert(OGS_FSM_STATE(&pfcp_node->sm));
if (ogs_pfcp_parse_msg(&pfcp_message, recvbuf) != OGS_OK) {
ogs_error("ogs_pfcp_parse_msg() failed");
ogs_pkbuf_free(recvbuf);
break;
}
rv = ogs_pfcp_xact_receive(pfcp_node, &pfcp_message.h, &pfcp_xact);
if (rv != OGS_OK) {
ogs_pkbuf_free(recvbuf);
break;
}
e->pfcp_message = &pfcp_message;
e->pfcp_xact = pfcp_xact;
e->gtp2_message = NULL;
if (pfcp_xact->gtpbuf) {
rv = ogs_gtp2_parse_msg(&gtp2_message, pfcp_xact->gtpbuf);
e->gtp2_message = &gtp2_message;
}
ogs_fsm_dispatch(&pfcp_node->sm, e);
if (OGS_FSM_CHECK(&pfcp_node->sm, smf_pfcp_state_exception)) {
ogs_error("PFCP state machine exception");
break;
}
ogs_pkbuf_free(recvbuf);
break;
case SMF_EVT_N4_TIMER:
case SMF_EVT_N4_NO_HEARTBEAT:
ogs_assert(e);
pfcp_node = e->pfcp_node;
ogs_assert(pfcp_node);
ogs_assert(OGS_FSM_STATE(&pfcp_node->sm));
ogs_fsm_dispatch(&pfcp_node->sm, e);
break;
case SMF_EVT_SBI_SERVER:
sbi_request = e->sbi.request;
ogs_assert(sbi_request);
stream = e->sbi.data;
ogs_assert(stream);
rv = ogs_sbi_parse_request(&sbi_message, sbi_request);
if (rv != OGS_OK) {
/* 'sbi_message' buffer is released in ogs_sbi_parse_request() */
ogs_error("cannot parse HTTP sbi_message");
ogs_assert(true ==
ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
NULL, "cannot parse HTTP sbi_message", NULL));
break;
}
SWITCH(sbi_message.h.service.name)
CASE(OGS_SBI_SERVICE_NAME_NUDM_SDM)
api_version = OGS_SBI_API_V2;
break;
DEFAULT
api_version = OGS_SBI_API_V1;
END
ogs_assert(api_version);
if (strcmp(sbi_message.h.api.version, api_version) != 0) {
ogs_error("Not supported version [%s]", sbi_message.h.api.version);
ogs_assert(true ==
ogs_sbi_server_send_error(
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
&sbi_message, "Not supported version", NULL));
ogs_sbi_message_free(&sbi_message);
break;
}
SWITCH(sbi_message.h.service.name)
CASE(OGS_SBI_SERVICE_NAME_NNRF_NFM)
SWITCH(sbi_message.h.resource.component[0])
CASE(OGS_SBI_RESOURCE_NAME_NF_STATUS_NOTIFY)
SWITCH(sbi_message.h.method)
CASE(OGS_SBI_HTTP_METHOD_POST)
smf_nnrf_handle_nf_status_notify(stream, &sbi_message);
break;
DEFAULT
ogs_error("Invalid HTTP method [%s]", sbi_message.h.method);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_FORBIDDEN, &sbi_message,
"Invalid HTTP method", sbi_message.h.method));
END
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message.h.resource.component[0]);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST, &sbi_message,
"Invalid resource name",
sbi_message.h.resource.component[0]));
END
break;
CASE(OGS_SBI_SERVICE_NAME_NSMF_PDUSESSION)
SWITCH(sbi_message.h.resource.component[0])
CASE(OGS_SBI_RESOURCE_NAME_SM_CONTEXTS)
SWITCH(sbi_message.h.method)
CASE(OGS_SBI_HTTP_METHOD_POST)
SWITCH(sbi_message.h.resource.component[2])
CASE(OGS_SBI_RESOURCE_NAME_MODIFY)
CASE(OGS_SBI_RESOURCE_NAME_RELEASE)
if (!sbi_message.h.resource.component[1]) {
ogs_error("No smContextRef [%s]",
sbi_message.h.resource.component[1]);
smf_sbi_send_sm_context_update_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
"No smContextRef",
sbi_message.h.resource.component[1],
NULL, NULL);
break;
}
sess = smf_sess_find_by_sm_context_ref(
sbi_message.h.resource.component[1]);
if (!sess) {
ogs_warn("Not found [%s]", sbi_message.h.uri);
smf_sbi_send_sm_context_update_error(stream,
OGS_SBI_HTTP_STATUS_NOT_FOUND, "Not found",
sbi_message.h.uri, NULL, NULL);
}
break;
DEFAULT
sess = smf_sess_add_by_sbi_message(&sbi_message);
ogs_assert(sess);
END
break;
DEFAULT
ogs_error("Invalid HTTP method [%s]", sbi_message.h.method);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST, &sbi_message,
"Invalid HTTP method", sbi_message.h.method));
break;
END
if (sess) {
smf_ue = sess->smf_ue;
ogs_assert(smf_ue);
ogs_assert(OGS_FSM_STATE(&sess->sm));
e->sess = sess;
e->sbi.message = &sbi_message;
ogs_fsm_dispatch(&sess->sm, e);
}
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message.h.resource.component[0]);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST, &sbi_message,
"Invalid resource name",
sbi_message.h.resource.component[0]));
END
break;
CASE(OGS_SBI_SERVICE_NAME_NSMF_CALLBACK)
SWITCH(sbi_message.h.resource.component[0])
CASE(OGS_SBI_RESOURCE_NAME_N1_N2_FAILURE_NOTIFY)
smf_namf_comm_handle_n1_n2_message_transfer_failure_notify(
stream, &sbi_message);
break;
CASE(OGS_SBI_RESOURCE_NAME_SM_POLICY_NOTIFY)
if (!sbi_message.h.resource.component[1]) {
ogs_error("No smContextRef [%s]",
sbi_message.h.resource.component[1]);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST, &sbi_message,
"No smContextRef",
sbi_message.h.resource.component[1]));
break;
}
sess = smf_sess_find_by_sm_context_ref(
sbi_message.h.resource.component[1]);
if (!sess) {
ogs_warn("Not found [%s]", sbi_message.h.uri);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_NOT_FOUND, &sbi_message,
"Not found",
sbi_message.h.resource.component[1]));
break;
}
SWITCH(sbi_message.h.resource.component[2])
CASE(OGS_SBI_RESOURCE_NAME_UPDATE)
smf_npcf_smpolicycontrol_handle_update_notify(
sess, stream, &sbi_message);
break;
CASE(OGS_SBI_RESOURCE_NAME_TERMINATE)
smf_npcf_smpolicycontrol_handle_terminate_notify(
sess, stream, &sbi_message);
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message.h.resource.component[0]);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST, &sbi_message,
"Invalid resource name",
sbi_message.h.resource.component[0]));
END
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message.h.resource.component[0]);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST, &sbi_message,
"Invalid resource name",
sbi_message.h.resource.component[0]));
END
break;
DEFAULT
ogs_error("Invalid API name [%s]", sbi_message.h.service.name);
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_BAD_REQUEST, &sbi_message,
"Invalid API name", sbi_message.h.service.name));
END
/* In lib/sbi/server.c, notify_completed() releases 'request' buffer. */
ogs_sbi_message_free(&sbi_message);
break;
case SMF_EVT_SBI_CLIENT:
ogs_assert(e);
sbi_response = e->sbi.response;
ogs_assert(sbi_response);
rv = ogs_sbi_parse_response(&sbi_message, sbi_response);
if (rv != OGS_OK) {
ogs_error("cannot parse HTTP response");
ogs_sbi_message_free(&sbi_message);
ogs_sbi_response_free(sbi_response);
break;
}
SWITCH(sbi_message.h.service.name)
CASE(OGS_SBI_SERVICE_NAME_NUDM_SDM)
api_version = OGS_SBI_API_V2;
break;
DEFAULT
api_version = OGS_SBI_API_V1;
END
ogs_assert(api_version);
if (strcmp(sbi_message.h.api.version, api_version) != 0) {
ogs_error("Not supported version [%s]", sbi_message.h.api.version);
ogs_sbi_message_free(&sbi_message);
ogs_sbi_response_free(sbi_response);
break;
}
SWITCH(sbi_message.h.service.name)
CASE(OGS_SBI_SERVICE_NAME_NNRF_NFM)
SWITCH(sbi_message.h.resource.component[0])
CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
nf_instance = e->sbi.data;
ogs_assert(nf_instance);
ogs_assert(OGS_FSM_STATE(&nf_instance->sm));
e->sbi.message = &sbi_message;
ogs_fsm_dispatch(&nf_instance->sm, e);
break;
CASE(OGS_SBI_RESOURCE_NAME_SUBSCRIPTIONS)
subscription = e->sbi.data;
ogs_assert(subscription);
SWITCH(sbi_message.h.method)
CASE(OGS_SBI_HTTP_METHOD_POST)
if (sbi_message.res_status == OGS_SBI_HTTP_STATUS_CREATED ||
sbi_message.res_status == OGS_SBI_HTTP_STATUS_OK) {
smf_nnrf_handle_nf_status_subscribe(
subscription, &sbi_message);
} else {
ogs_error("HTTP response error : %d",
sbi_message.res_status);
}
break;
CASE(OGS_SBI_HTTP_METHOD_DELETE)
if (sbi_message.res_status ==
OGS_SBI_HTTP_STATUS_NO_CONTENT) {
ogs_sbi_subscription_remove(subscription);
} else {
ogs_error("HTTP response error : %d",
sbi_message.res_status);
}
break;
DEFAULT
ogs_error("Invalid HTTP method [%s]", sbi_message.h.method);
ogs_assert_if_reached();
END
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message.h.resource.component[0]);
ogs_assert_if_reached();
END
break;
CASE(OGS_SBI_SERVICE_NAME_NNRF_DISC)
SWITCH(sbi_message.h.resource.component[0])
CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
sbi_xact = e->sbi.data;
ogs_assert(sbi_xact);
SWITCH(sbi_message.h.method)
CASE(OGS_SBI_HTTP_METHOD_GET)
if (sbi_message.res_status == OGS_SBI_HTTP_STATUS_OK)
smf_nnrf_handle_nf_discover(sbi_xact, &sbi_message);
else
ogs_error("HTTP response error [%d]",
sbi_message.res_status);
break;
DEFAULT
ogs_error("Invalid HTTP method [%s]", sbi_message.h.method);
ogs_assert_if_reached();
END
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message.h.resource.component[0]);
ogs_assert_if_reached();
END
break;
CASE(OGS_SBI_SERVICE_NAME_NUDM_SDM)
CASE(OGS_SBI_SERVICE_NAME_NPCF_SMPOLICYCONTROL)
CASE(OGS_SBI_SERVICE_NAME_NAMF_COMM)
sbi_xact = e->sbi.data;
ogs_assert(sbi_xact);
sess = (smf_sess_t *)sbi_xact->sbi_object;
ogs_assert(sess);
e->sbi.data = sbi_xact->assoc_stream;
e->sbi.state = sbi_xact->state;
ogs_sbi_xact_remove(sbi_xact);
sess = smf_sess_cycle(sess);
if (!sess) {
ogs_error("Session has already been removed");
break;
}
smf_ue = sess->smf_ue;
ogs_assert(smf_ue);
smf_ue = smf_ue_cycle(smf_ue);
ogs_assert(smf_ue);
ogs_assert(OGS_FSM_STATE(&sess->sm));
e->sess = sess;
e->sbi.message = &sbi_message;
ogs_fsm_dispatch(&sess->sm, e);
break;
DEFAULT
ogs_error("Invalid service name [%s]", sbi_message.h.service.name);
ogs_assert_if_reached();
END
ogs_sbi_message_free(&sbi_message);
ogs_sbi_response_free(sbi_response);
break;
case SMF_EVT_SBI_TIMER:
ogs_assert(e);
switch(e->timer_id) {
case SMF_TIMER_NF_INSTANCE_REGISTRATION_INTERVAL:
case SMF_TIMER_NF_INSTANCE_HEARTBEAT_INTERVAL:
case SMF_TIMER_NF_INSTANCE_NO_HEARTBEAT:
case SMF_TIMER_NF_INSTANCE_VALIDITY:
nf_instance = e->sbi.data;
ogs_assert(nf_instance);
ogs_assert(OGS_FSM_STATE(&nf_instance->sm));
ogs_fsm_dispatch(&nf_instance->sm, e);
if (OGS_FSM_CHECK(&nf_instance->sm, smf_nf_state_exception))
ogs_error("State machine exception [%d]", e->timer_id);
break;
case SMF_TIMER_SUBSCRIPTION_VALIDITY:
subscription = e->sbi.data;
ogs_assert(subscription);
ogs_assert(true ==
ogs_nnrf_nfm_send_nf_status_subscribe(subscription->client,
smf_self()->nf_type, subscription->req_nf_instance_id,
subscription->subscr_cond.nf_type));
ogs_info("Subscription validity expired [%s]", subscription->id);
ogs_sbi_subscription_remove(subscription);
break;
case SMF_TIMER_SBI_CLIENT_WAIT:
sbi_xact = e->sbi.data;
ogs_assert(sbi_xact);
stream = sbi_xact->assoc_stream;
/* Here, we should not use ogs_assert(stream)
* since 'namf-comm' service has no an associated stream. */
ogs_sbi_xact_remove(sbi_xact);
ogs_error("Cannot receive SBI message");
if (stream) {
ogs_assert(true ==
ogs_sbi_server_send_error(stream,
OGS_SBI_HTTP_STATUS_GATEWAY_TIMEOUT, NULL,
"Cannot receive SBI message", NULL));
}
break;
default:
ogs_error("Unknown timer[%s:%d]",
smf_timer_get_name(e->timer_id), e->timer_id);
}
break;
case SMF_EVT_5GSM_MESSAGE:
sess = e->sess;
ogs_assert(sess);
stream = e->sbi.data;
ogs_assert(stream);
pkbuf = e->pkbuf;
ogs_assert(pkbuf);
if (ogs_nas_5gsm_decode(&nas_message, pkbuf) != OGS_OK) {
ogs_error("ogs_nas_5gsm_decode() failed");
ogs_pkbuf_free(pkbuf);
return;
}
ogs_assert(sess);
ogs_assert(OGS_FSM_STATE(&sess->sm));
sess->pti = nas_message.gsm.h.procedure_transaction_identity;
e->nas.message = &nas_message;
ogs_fsm_dispatch(&sess->sm, e);
ogs_pkbuf_free(pkbuf);
break;
case SMF_EVT_NGAP_MESSAGE:
sess = e->sess;
ogs_assert(sess);
stream = e->sbi.data;
ogs_assert(stream);
pkbuf = e->pkbuf;
ogs_assert(pkbuf);
ogs_assert(e->ngap.type);
ogs_assert(sess);
ogs_assert(OGS_FSM_STATE(&sess->sm));
ogs_fsm_dispatch(&sess->sm, e);
ogs_pkbuf_free(pkbuf);
break;
default:
ogs_error("No handler for event %s", smf_event_get_name(e));
break;
}
}
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