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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 "npcf-handler.h"
#include "sbi-path.h"
#include "nas-path.h"
int amf_npcf_am_policy_control_handle_create(
amf_ue_t *amf_ue, ogs_sbi_message_t *recvmsg)
{
int r, rv;
uint64_t supported_features;
OpenAPI_policy_association_t *PolicyAssociation = NULL;
OpenAPI_lnode_t *node = NULL;
ogs_sbi_message_t message;
ogs_sbi_header_t header;
bool rc;
ogs_sbi_client_t *client = NULL;
OpenAPI_uri_scheme_e scheme = OpenAPI_uri_scheme_NULL;
char *fqdn = NULL;
uint16_t fqdn_port = 0;
ogs_sockaddr_t *addr = NULL, *addr6 = NULL;
if (recvmsg->res_status != OGS_SBI_HTTP_STATUS_CREATED) {
ogs_error("[%s] HTTP response error [%d]",
amf_ue->supi, recvmsg->res_status);
r = nas_5gs_send_gmm_reject_from_sbi(amf_ue, recvmsg->res_status);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
return OGS_ERROR;
}
if (!recvmsg->http.location) {
ogs_error("[%s] No http.location", amf_ue->supi);
r = nas_5gs_send_gmm_reject_from_sbi(
amf_ue, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
return OGS_ERROR;
}
PolicyAssociation = recvmsg->PolicyAssociation;
if (!PolicyAssociation) {
ogs_error("No PolicyAssociation");
r = nas_5gs_send_gmm_reject_from_sbi(
amf_ue, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
return OGS_ERROR;
}
if (!PolicyAssociation->supp_feat) {
ogs_error("No suppFeat");
r = nas_5gs_send_gmm_reject_from_sbi(
amf_ue, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
return OGS_ERROR;
}
memset(&header, 0, sizeof(header));
header.uri = recvmsg->http.location;
rv = ogs_sbi_parse_header(&message, &header);
if (rv != OGS_OK) {
ogs_error("[%s] Cannot parse http.location [%s]",
amf_ue->supi, recvmsg->http.location);
r = nas_5gs_send_gmm_reject_from_sbi(
amf_ue, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
return OGS_ERROR;
}
if (!message.h.resource.component[1]) {
ogs_error("[%s] No Assocation ID [%s]",
amf_ue->supi, recvmsg->http.location);
ogs_sbi_header_free(&header);
r = nas_5gs_send_gmm_reject_from_sbi(
amf_ue, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
return OGS_ERROR;
}
rc = ogs_sbi_getaddr_from_uri(
&scheme, &fqdn, &fqdn_port, &addr, &addr6, header.uri);
if (rc == false || scheme == OpenAPI_uri_scheme_NULL) {
ogs_error("[%s] Invalid URI [%s]", amf_ue->supi, header.uri);
ogs_sbi_header_free(&header);
r = nas_5gs_send_gmm_reject_from_sbi(
amf_ue, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
return OGS_ERROR;
}
client = ogs_sbi_client_find(scheme, fqdn, fqdn_port, addr, addr6);
if (!client) {
ogs_debug("[%s] ogs_sbi_client_add()", amf_ue->supi);
client = ogs_sbi_client_add(scheme, fqdn, fqdn_port, addr, addr6);
if (!client) {
ogs_error("[%s] ogs_sbi_client_add() failed", amf_ue->supi);
ogs_sbi_header_free(&header);
r = nas_5gs_send_gmm_reject_from_sbi(
amf_ue, OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
ogs_free(fqdn);
ogs_freeaddrinfo(addr);
ogs_freeaddrinfo(addr6);
return OGS_ERROR;
}
}
OGS_SBI_SETUP_CLIENT(&amf_ue->policy_association, client);
ogs_free(fqdn);
ogs_freeaddrinfo(addr);
ogs_freeaddrinfo(addr6);
PCF_AM_POLICY_STORE(amf_ue, header.uri, message.h.resource.component[1]);
/* SBI Features */
supported_features = ogs_uint64_from_string(PolicyAssociation->supp_feat);
amf_ue->am_policy_control_features &= supported_features;
OpenAPI_list_for_each(PolicyAssociation->triggers, node) {
if (node->data) {
OpenAPI_request_trigger_e trigger = (intptr_t)node->data;
OpenAPI_ambr_t *UeAmbr = NULL;
switch (trigger) {
case OpenAPI_request_trigger_UE_AMBR_CH:
UeAmbr = PolicyAssociation->ue_ambr;
if (UeAmbr) {
amf_ue->ue_ambr.uplink =
ogs_sbi_bitrate_from_string(UeAmbr->uplink);
amf_ue->ue_ambr.downlink =
ogs_sbi_bitrate_from_string(UeAmbr->downlink);
}
break;
default:
ogs_error("Not implemented [%d]", trigger);
break;
}
}
}
ogs_sbi_header_free(&header);
return OGS_OK;
}
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