422 lines
14 KiB
C
422 lines
14 KiB
C
/*
|
|
* Copyright (C) 2019,2020 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 "sbi-path.h"
|
|
#include "nnrf-handler.h"
|
|
|
|
void udm_state_initial(ogs_fsm_t *s, udm_event_t *e)
|
|
{
|
|
udm_sm_debug(e);
|
|
|
|
ogs_assert(s);
|
|
|
|
OGS_FSM_TRAN(s, &udm_state_operational);
|
|
}
|
|
|
|
void udm_state_final(ogs_fsm_t *s, udm_event_t *e)
|
|
{
|
|
udm_sm_debug(e);
|
|
}
|
|
|
|
void udm_state_operational(ogs_fsm_t *s, udm_event_t *e)
|
|
{
|
|
int rv;
|
|
const char *api_version = NULL;
|
|
|
|
ogs_sbi_stream_t *stream = NULL;
|
|
ogs_sbi_request_t *request = NULL;
|
|
|
|
ogs_sbi_nf_instance_t *nf_instance = NULL;
|
|
ogs_sbi_subscription_data_t *subscription_data = NULL;
|
|
ogs_sbi_response_t *response = NULL;
|
|
ogs_sbi_message_t message;
|
|
ogs_sbi_xact_t *sbi_xact = NULL;
|
|
|
|
udm_ue_t *udm_ue = NULL;
|
|
|
|
udm_sm_debug(e);
|
|
|
|
ogs_assert(s);
|
|
|
|
switch (e->h.id) {
|
|
case OGS_FSM_ENTRY_SIG:
|
|
break;
|
|
|
|
case OGS_FSM_EXIT_SIG:
|
|
break;
|
|
|
|
case OGS_EVENT_SBI_SERVER:
|
|
request = e->h.sbi.request;
|
|
ogs_assert(request);
|
|
stream = e->h.sbi.data;
|
|
ogs_assert(stream);
|
|
|
|
rv = ogs_sbi_parse_request(&message, request);
|
|
if (rv != OGS_OK) {
|
|
/* 'message' buffer is released in ogs_sbi_parse_request() */
|
|
ogs_error("cannot parse HTTP message");
|
|
ogs_assert(true ==
|
|
ogs_sbi_server_send_error(
|
|
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
NULL, "cannot parse HTTP message", NULL));
|
|
break;
|
|
}
|
|
|
|
SWITCH(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
|
|
|
|
if (strcmp(message.h.api.version, api_version) != 0) {
|
|
ogs_error("Not supported version [%s]", message.h.api.version);
|
|
ogs_assert(true ==
|
|
ogs_sbi_server_send_error(
|
|
stream, OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
&message, "Not supported version", NULL));
|
|
ogs_sbi_message_free(&message);
|
|
break;
|
|
}
|
|
|
|
SWITCH(message.h.service.name)
|
|
CASE(OGS_SBI_SERVICE_NAME_NNRF_NFM)
|
|
|
|
SWITCH(message.h.resource.component[0])
|
|
CASE(OGS_SBI_RESOURCE_NAME_NF_STATUS_NOTIFY)
|
|
SWITCH(message.h.method)
|
|
CASE(OGS_SBI_HTTP_METHOD_POST)
|
|
ogs_nnrf_handle_nf_status_notify(stream, &message);
|
|
break;
|
|
|
|
DEFAULT
|
|
ogs_error("Invalid HTTP method [%s]",
|
|
message.h.method);
|
|
ogs_assert(true ==
|
|
ogs_sbi_server_send_error(stream,
|
|
OGS_SBI_HTTP_STATUS_FORBIDDEN, &message,
|
|
"Invalid HTTP method", message.h.method));
|
|
END
|
|
break;
|
|
|
|
DEFAULT
|
|
ogs_error("Invalid resource name [%s]",
|
|
message.h.resource.component[0]);
|
|
ogs_assert(true ==
|
|
ogs_sbi_server_send_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST, &message,
|
|
"Unknown resource name",
|
|
message.h.resource.component[0]));
|
|
END
|
|
break;
|
|
|
|
CASE(OGS_SBI_SERVICE_NAME_NUDM_UEAU)
|
|
CASE(OGS_SBI_SERVICE_NAME_NUDM_UECM)
|
|
CASE(OGS_SBI_SERVICE_NAME_NUDM_SDM)
|
|
if (!message.h.resource.component[0]) {
|
|
ogs_error("Not found [%s]", message.h.method);
|
|
ogs_assert(true ==
|
|
ogs_sbi_server_send_error(stream,
|
|
OGS_SBI_HTTP_STATUS_NOT_FOUND,
|
|
&message, "Not found", message.h.method));
|
|
break;
|
|
}
|
|
|
|
if (!message.h.resource.component[1]) {
|
|
ogs_error("Invalid resource name [%s]", message.h.method);
|
|
ogs_assert(true ==
|
|
ogs_sbi_server_send_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
&message, "Invalid resource name", message.h.method));
|
|
break;
|
|
}
|
|
|
|
SWITCH(message.h.resource.component[1])
|
|
CASE(OGS_SBI_RESOURCE_NAME_AUTH_EVENTS)
|
|
if (message.h.resource.component[2]) {
|
|
udm_ue = udm_ue_find_by_ctx_id(
|
|
message.h.resource.component[2]);
|
|
}
|
|
DEFAULT
|
|
END
|
|
|
|
if (!udm_ue) {
|
|
udm_ue = udm_ue_find_by_suci_or_supi(
|
|
message.h.resource.component[0]);
|
|
if (!udm_ue) {
|
|
udm_ue = udm_ue_add(message.h.resource.component[0]);
|
|
ogs_assert(udm_ue);
|
|
}
|
|
}
|
|
|
|
if (!udm_ue) {
|
|
ogs_error("Not found [%s]", message.h.method);
|
|
ogs_assert(true ==
|
|
ogs_sbi_server_send_error(stream,
|
|
OGS_SBI_HTTP_STATUS_NOT_FOUND,
|
|
&message, "Not found", message.h.method));
|
|
break;
|
|
}
|
|
|
|
ogs_assert(OGS_FSM_STATE(&udm_ue->sm));
|
|
|
|
e->udm_ue = udm_ue;
|
|
e->h.sbi.message = &message;
|
|
ogs_fsm_dispatch(&udm_ue->sm, e);
|
|
if (OGS_FSM_CHECK(&udm_ue->sm, udm_ue_state_exception)) {
|
|
ogs_error("[%s] State machine exception", udm_ue->suci);
|
|
udm_ue_remove(udm_ue);
|
|
}
|
|
break;
|
|
|
|
DEFAULT
|
|
ogs_error("Invalid API name [%s]", message.h.service.name);
|
|
ogs_assert(true ==
|
|
ogs_sbi_server_send_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST, &message,
|
|
"Invalid API name", message.h.service.name));
|
|
END
|
|
|
|
/* In lib/sbi/server.c, notify_completed() releases 'request' buffer. */
|
|
ogs_sbi_message_free(&message);
|
|
break;
|
|
|
|
case OGS_EVENT_SBI_CLIENT:
|
|
ogs_assert(e);
|
|
|
|
response = e->h.sbi.response;
|
|
ogs_assert(response);
|
|
rv = ogs_sbi_parse_response(&message, response);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("cannot parse HTTP response");
|
|
ogs_sbi_message_free(&message);
|
|
ogs_sbi_response_free(response);
|
|
break;
|
|
}
|
|
|
|
SWITCH(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
|
|
|
|
if (strcmp(message.h.api.version, api_version) != 0) {
|
|
ogs_error("Not supported version [%s]", message.h.api.version);
|
|
ogs_sbi_message_free(&message);
|
|
ogs_sbi_response_free(response);
|
|
break;
|
|
}
|
|
|
|
SWITCH(message.h.service.name)
|
|
CASE(OGS_SBI_SERVICE_NAME_NNRF_NFM)
|
|
|
|
SWITCH(message.h.resource.component[0])
|
|
CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
|
|
nf_instance = e->h.sbi.data;
|
|
ogs_assert(nf_instance);
|
|
ogs_assert(OGS_FSM_STATE(&nf_instance->sm));
|
|
|
|
e->h.sbi.message = &message;
|
|
ogs_fsm_dispatch(&nf_instance->sm, e);
|
|
break;
|
|
|
|
CASE(OGS_SBI_RESOURCE_NAME_SUBSCRIPTIONS)
|
|
subscription_data = e->h.sbi.data;
|
|
ogs_assert(subscription_data);
|
|
|
|
SWITCH(message.h.method)
|
|
CASE(OGS_SBI_HTTP_METHOD_POST)
|
|
if (message.res_status == OGS_SBI_HTTP_STATUS_CREATED ||
|
|
message.res_status == OGS_SBI_HTTP_STATUS_OK) {
|
|
ogs_nnrf_handle_nf_status_subscribe(
|
|
subscription_data, &message);
|
|
} else {
|
|
ogs_error("[%s] HTTP response error [%d]",
|
|
subscription_data->id, message.res_status);
|
|
}
|
|
break;
|
|
|
|
CASE(OGS_SBI_HTTP_METHOD_DELETE)
|
|
if (message.res_status ==
|
|
OGS_SBI_HTTP_STATUS_NO_CONTENT) {
|
|
ogs_sbi_subscription_data_remove(subscription_data);
|
|
} else {
|
|
ogs_error("[%s] HTTP response error [%d]",
|
|
subscription_data->id, message.res_status);
|
|
}
|
|
break;
|
|
|
|
DEFAULT
|
|
ogs_error("[%s] Invalid HTTP method [%s]",
|
|
subscription_data->id, message.h.method);
|
|
ogs_assert_if_reached();
|
|
END
|
|
break;
|
|
|
|
DEFAULT
|
|
ogs_error("Invalid resource name [%s]",
|
|
message.h.resource.component[0]);
|
|
ogs_assert_if_reached();
|
|
END
|
|
break;
|
|
|
|
CASE(OGS_SBI_SERVICE_NAME_NNRF_DISC)
|
|
SWITCH(message.h.resource.component[0])
|
|
CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
|
|
sbi_xact = e->h.sbi.data;
|
|
ogs_assert(sbi_xact);
|
|
|
|
SWITCH(message.h.method)
|
|
CASE(OGS_SBI_HTTP_METHOD_GET)
|
|
if (message.res_status == OGS_SBI_HTTP_STATUS_OK)
|
|
udm_nnrf_handle_nf_discover(sbi_xact, &message);
|
|
else
|
|
ogs_error("HTTP response error [%d]",
|
|
message.res_status);
|
|
break;
|
|
|
|
DEFAULT
|
|
ogs_error("Invalid HTTP method [%s]", message.h.method);
|
|
ogs_assert_if_reached();
|
|
END
|
|
break;
|
|
|
|
DEFAULT
|
|
ogs_error("Invalid resource name [%s]",
|
|
message.h.resource.component[0]);
|
|
ogs_assert_if_reached();
|
|
END
|
|
break;
|
|
|
|
CASE(OGS_SBI_SERVICE_NAME_NUDR_DR)
|
|
SWITCH(message.h.resource.component[0])
|
|
CASE(OGS_SBI_RESOURCE_NAME_SUBSCRIPTION_DATA)
|
|
sbi_xact = e->h.sbi.data;
|
|
ogs_assert(sbi_xact);
|
|
|
|
sbi_xact = ogs_sbi_xact_cycle(sbi_xact);
|
|
if (!sbi_xact) {
|
|
/* CLIENT_WAIT timer could remove SBI transaction
|
|
* before receiving SBI message */
|
|
ogs_error("SBI transaction has already been removed");
|
|
break;
|
|
}
|
|
|
|
udm_ue = (udm_ue_t *)sbi_xact->sbi_object;
|
|
ogs_assert(udm_ue);
|
|
|
|
e->h.sbi.data = sbi_xact->assoc_stream;
|
|
|
|
ogs_sbi_xact_remove(sbi_xact);
|
|
|
|
udm_ue = udm_ue_cycle(udm_ue);
|
|
if (!udm_ue) {
|
|
ogs_error("UE(udm_ue) Context has already been removed");
|
|
break;
|
|
}
|
|
|
|
e->udm_ue = udm_ue;
|
|
e->h.sbi.message = &message;
|
|
|
|
ogs_fsm_dispatch(&udm_ue->sm, e);
|
|
if (OGS_FSM_CHECK(&udm_ue->sm, udm_ue_state_exception)) {
|
|
ogs_error("[%s] State machine exception", udm_ue->suci);
|
|
udm_ue_remove(udm_ue);
|
|
}
|
|
|
|
break;
|
|
|
|
DEFAULT
|
|
ogs_error("Invalid resource name [%s]",
|
|
message.h.resource.component[0]);
|
|
ogs_assert_if_reached();
|
|
END
|
|
break;
|
|
|
|
DEFAULT
|
|
ogs_error("Invalid API name [%s]", message.h.service.name);
|
|
ogs_assert_if_reached();
|
|
END
|
|
|
|
ogs_sbi_message_free(&message);
|
|
ogs_sbi_response_free(response);
|
|
break;
|
|
|
|
case OGS_EVENT_SBI_TIMER:
|
|
ogs_assert(e);
|
|
|
|
switch(e->h.timer_id) {
|
|
case OGS_TIMER_NF_INSTANCE_REGISTRATION_INTERVAL:
|
|
case OGS_TIMER_NF_INSTANCE_HEARTBEAT_INTERVAL:
|
|
case OGS_TIMER_NF_INSTANCE_NO_HEARTBEAT:
|
|
case OGS_TIMER_NF_INSTANCE_VALIDITY:
|
|
nf_instance = e->h.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, ogs_sbi_nf_state_exception))
|
|
ogs_error("[%s:%s] State machine exception [%d]",
|
|
OpenAPI_nf_type_ToString(nf_instance->nf_type),
|
|
nf_instance->id, e->h.timer_id);
|
|
break;
|
|
|
|
case OGS_TIMER_SUBSCRIPTION_VALIDITY:
|
|
subscription_data = e->h.sbi.data;
|
|
ogs_assert(subscription_data);
|
|
|
|
ogs_assert(true ==
|
|
ogs_nnrf_nfm_send_nf_status_subscribe(subscription_data));
|
|
|
|
ogs_info("[%s] Subscription validity expired",
|
|
subscription_data->id);
|
|
ogs_sbi_subscription_data_remove(subscription_data);
|
|
break;
|
|
|
|
case OGS_TIMER_SBI_CLIENT_WAIT:
|
|
sbi_xact = e->h.sbi.data;
|
|
ogs_assert(sbi_xact);
|
|
|
|
stream = sbi_xact->assoc_stream;
|
|
ogs_assert(stream);
|
|
|
|
ogs_sbi_xact_remove(sbi_xact);
|
|
|
|
ogs_error("Cannot receive SBI message");
|
|
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]",
|
|
ogs_timer_get_name(e->h.timer_id), e->h.timer_id);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
ogs_error("No handler for event %s", udm_event_get_name(e));
|
|
break;
|
|
}
|
|
}
|