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open5gs/src/smf/npcf-build.c

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/*
* 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 "npcf-build.h"
ogs_sbi_request_t *smf_npcf_smpolicycontrol_build_create(
smf_sess_t *sess, void *data)
{
smf_ue_t *smf_ue = NULL;
ogs_sbi_message_t message;
ogs_sbi_header_t header;
ogs_sbi_request_t *request = NULL;
ogs_sbi_server_t *server = NULL;
OpenAPI_sm_policy_context_data_t SmPolicyContextData;
OpenAPI_ambr_t SubsSessAmbr;
OpenAPI_subscribed_default_qos_t SubsDefQos;
OpenAPI_arp_t Arp;
OpenAPI_snssai_t sNssai;
ogs_assert(sess);
ogs_assert(sess->sm_context_ref);
ogs_assert(sess->session.name);
smf_ue = sess->smf_ue;
ogs_assert(smf_ue);
memset(&message, 0, sizeof(message));
message.h.method = (char *)OGS_SBI_HTTP_METHOD_POST;
message.h.service.name = (char *)OGS_SBI_SERVICE_NAME_NPCF_SMPOLICYCONTROL;
message.h.api.version = (char *)OGS_SBI_API_V1;
message.h.resource.component[0] = (char *)OGS_SBI_RESOURCE_NAME_SM_POLICIES;
memset(&SmPolicyContextData, 0, sizeof(SmPolicyContextData));
memset(&sNssai, 0, sizeof(sNssai));
memset(&SubsSessAmbr, 0, sizeof(SubsSessAmbr));
SmPolicyContextData.supi = smf_ue->supi;
if (!SmPolicyContextData.supi) {
ogs_error("No supi");
goto end;
}
SmPolicyContextData.pdu_session_id = sess->psi;
if (!SmPolicyContextData.pdu_session_id) {
ogs_error("No pdu_session_id");
goto end;
}
SmPolicyContextData.pdu_session_type = sess->session.session_type;
if (!SmPolicyContextData.pdu_session_type) {
ogs_error("No pdu_session_type");
goto end;
}
/*
* Use ogs_sbi_supi_in_vplmn() instead of ogs_sbi_plmn_id_in_vplmn().
* This is because some vendors might not use the full DNN in LBO and
* Open5GS cannot derive the home PLMN ID without the full DNN.
*
* TS29.502
* 6.1 Nsmf_PDUSession Service API
* Table 6.1.6.2.2-1: Definition of type SmContextCreateData
*
* NAME: dnn
* Data type: Dnn
* P: C
* Cardinality: 0..1
*
* This IE shall be present, except during an EPS to 5GS Idle mode mobility
* or handover using the N26 interface.
*
* When present, it shall contain the requested DNN; the DNN shall
* be the full DNN (i.e. with both the Network Identifier and
* Operator Identifier) for a HR PDU session, and it should be
* the full DNN in LBO and non-roaming scenarios. If the Operator Identifier
* is absent, the serving core network operator shall be assumed.
*
* TS29.512
* 5 Npcf_SMPolicyControl Service API
* 5.6 Data Model
* 5.6.2 Structured data types
* Table 5.6.2.3-1: Definition of type SmPolicyContextData
*
* NAME: dnn
* Data type: Dnn
* P: M
* Cardinality: 1
* The DNN of the PDU session, a full DNN with both the Network Identifier
* and Operator Identifier, or a DNN with the Network Identifier only
*/
if (ogs_sbi_supi_in_vplmn(smf_ue->supi) == true) {
char *home_network_domain = NULL;
home_network_domain =
ogs_home_network_domain_from_plmn_id(&sess->home_plmn_id);
ogs_assert(home_network_domain);
SmPolicyContextData.dnn =
ogs_msprintf("%s.%s", sess->session.name, home_network_domain);
ogs_assert(SmPolicyContextData.dnn);
ogs_free(home_network_domain);
} else {
SmPolicyContextData.dnn = ogs_strdup(sess->session.name);
ogs_assert(SmPolicyContextData.dnn);
}
server = ogs_sbi_server_first();
if (!server) {
ogs_error("No server");
goto end;
}
memset(&header, 0, sizeof(header));
header.service.name = (char *)OGS_SBI_SERVICE_NAME_NSMF_CALLBACK;
header.api.version = (char *)OGS_SBI_API_V1;
header.resource.component[0] =
(char *)OGS_SBI_RESOURCE_NAME_SM_POLICY_NOTIFY;
header.resource.component[1] = sess->sm_context_ref;
SmPolicyContextData.notification_uri = ogs_sbi_server_uri(server, &header);
if (!SmPolicyContextData.notification_uri) {
ogs_error("No notification_uri");
goto end;
}
SmPolicyContextData.serving_network =
ogs_sbi_build_plmn_id_nid(&sess->serving_plmn_id);
if (!SmPolicyContextData.serving_network) {
ogs_error("No serving_network");
goto end;
}
if (sess->ipv4) {
SmPolicyContextData.ipv4_address =
ogs_ipv4_to_string(sess->ipv4->addr[0]);
if (!SmPolicyContextData.ipv4_address) {
ogs_error("No ipv4_address");
goto end;
}
}
if (sess->ipv6) {
SmPolicyContextData.ipv6_address_prefix = ogs_ipv6prefix_to_string(
(uint8_t *)sess->ipv6->addr, OGS_IPV6_128_PREFIX_LEN);
if (!SmPolicyContextData.ipv6_address_prefix) {
ogs_error("No ipv6_address_prefix");
goto end;
}
}
if (sess->session.ipv4_framed_routes) {
int i;
OpenAPI_list_t *FrameRouteList = OpenAPI_list_create();
for (i = 0; i < OGS_MAX_NUM_OF_FRAMED_ROUTES_IN_PDI; i++) {
const char *route = sess->session.ipv4_framed_routes[i];
if (!route) break;
OpenAPI_list_add(FrameRouteList, ogs_strdup(route));
}
SmPolicyContextData.ipv4_frame_route_list = FrameRouteList;
}
if (sess->session.ipv6_framed_routes) {
int i;
OpenAPI_list_t *FrameRouteList = OpenAPI_list_create();
for (i = 0; i < OGS_MAX_NUM_OF_FRAMED_ROUTES_IN_PDI; i++) {
const char *route = sess->session.ipv6_framed_routes[i];
if (!route) break;
OpenAPI_list_add(FrameRouteList, ogs_strdup(route));
}
SmPolicyContextData.ipv6_frame_route_list = FrameRouteList;
}
if (OGS_SBI_FEATURES_IS_SET(sess->smpolicycontrol_features,
OGS_SBI_NPCF_SMPOLICYCONTROL_DN_AUTHORIZATION)) {
if (sess->session.ambr.uplink) {
SubsSessAmbr.uplink = ogs_sbi_bitrate_to_string(
sess->session.ambr.uplink, OGS_SBI_BITRATE_KBPS);
}
if (sess->session.ambr.downlink) {
SubsSessAmbr.downlink = ogs_sbi_bitrate_to_string(
sess->session.ambr.downlink, OGS_SBI_BITRATE_KBPS);
}
if (SubsSessAmbr.downlink || SubsSessAmbr.uplink) {
SmPolicyContextData.subs_sess_ambr = &SubsSessAmbr;
}
}
memset(&Arp, 0, sizeof(Arp));
if (sess->session.qos.arp.pre_emption_capability ==
OGS_5GC_PRE_EMPTION_ENABLED)
Arp.preempt_cap = OpenAPI_preemption_capability_MAY_PREEMPT;
else if (sess->session.qos.arp.pre_emption_capability ==
OGS_5GC_PRE_EMPTION_DISABLED)
Arp.preempt_cap = OpenAPI_preemption_capability_NOT_PREEMPT;
if (!Arp.preempt_cap) {
ogs_error("No Arp.preempt_cap");
goto end;
}
if (sess->session.qos.arp.pre_emption_vulnerability ==
OGS_5GC_PRE_EMPTION_ENABLED)
Arp.preempt_vuln = OpenAPI_preemption_vulnerability_PREEMPTABLE;
else if (sess->session.qos.arp.pre_emption_vulnerability ==
OGS_5GC_PRE_EMPTION_DISABLED)
Arp.preempt_vuln = OpenAPI_preemption_vulnerability_NOT_PREEMPTABLE;
if (!Arp.preempt_vuln) {
ogs_error("No Arp.preempt_vuln");
goto end;
}
Arp.priority_level = sess->session.qos.arp.priority_level;
memset(&SubsDefQos, 0, sizeof(SubsDefQos));
SubsDefQos.arp = &Arp;
SubsDefQos._5qi = sess->session.qos.index;
SubsDefQos.is_priority_level = true;
SubsDefQos.priority_level = sess->session.qos.arp.priority_level;
SmPolicyContextData.subs_def_qos = &SubsDefQos;
if (sess->smpolicycontrol_features) {
SmPolicyContextData.supp_feat =
ogs_uint64_to_string(sess->smpolicycontrol_features);
if (!SmPolicyContextData.supp_feat) {
ogs_error("No supp_feat");
goto end;
}
}
sNssai.sst = sess->s_nssai.sst;
sNssai.sd = ogs_s_nssai_sd_to_string(sess->s_nssai.sd);
SmPolicyContextData.slice_info = &sNssai;
message.SmPolicyContextData = &SmPolicyContextData;
request = ogs_sbi_build_request(&message);
ogs_expect(request);
end:
if (SmPolicyContextData.notification_uri)
ogs_free(SmPolicyContextData.notification_uri);
if (SmPolicyContextData.gpsi)
ogs_free(SmPolicyContextData.gpsi);
if (SmPolicyContextData.dnn)
ogs_free(SmPolicyContextData.dnn);
if (SmPolicyContextData.serving_network)
ogs_sbi_free_plmn_id_nid(SmPolicyContextData.serving_network);
if (sNssai.sd)
ogs_free(sNssai.sd);
if (SubsSessAmbr.downlink) ogs_free(SubsSessAmbr.downlink);
if (SubsSessAmbr.uplink) ogs_free(SubsSessAmbr.uplink);
if (SmPolicyContextData.supp_feat)
ogs_free(SmPolicyContextData.supp_feat);
if (SmPolicyContextData.ipv4_address)
ogs_free(SmPolicyContextData.ipv4_address);
if (SmPolicyContextData.ipv6_address_prefix)
ogs_free(SmPolicyContextData.ipv6_address_prefix);
OpenAPI_clear_and_free_string_list(SmPolicyContextData.ipv4_frame_route_list);
OpenAPI_clear_and_free_string_list(SmPolicyContextData.ipv6_frame_route_list);
return request;
}
ogs_sbi_request_t *smf_npcf_smpolicycontrol_build_delete(
smf_sess_t *sess, void *data)
{
smf_npcf_smpolicycontrol_param_t *param = data;
smf_ue_t *smf_ue = NULL;
ogs_sbi_message_t message;
ogs_sbi_request_t *request = NULL;
OpenAPI_sm_policy_delete_data_t SmPolicyDeleteData;
OpenAPI_list_t *ranNasRelCauseList = NULL;
OpenAPI_ran_nas_rel_cause_t *ranNasRelCause = NULL;
OpenAPI_user_location_t ueLocation;
OpenAPI_lnode_t *node = NULL;
ogs_assert(sess);
ogs_assert(sess->sm_context_ref);
smf_ue = sess->smf_ue;
ogs_assert(smf_ue);
ogs_assert(sess->policy_association.resource_uri);
memset(&message, 0, sizeof(message));
message.h.method = (char *)OGS_SBI_HTTP_METHOD_POST;
message.h.uri = ogs_msprintf("%s/%s",
sess->policy_association.resource_uri,
OGS_SBI_RESOURCE_NAME_DELETE);
memset(&SmPolicyDeleteData, 0, sizeof(SmPolicyDeleteData));
memset(&ueLocation, 0, sizeof(ueLocation));
if (param) {
if (param->ran_nas_release.gmm_cause ||
param->ran_nas_release.gsm_cause ||
param->ran_nas_release.ngap_cause.group) {
ranNasRelCauseList = OpenAPI_list_create();
if (!ranNasRelCauseList) {
ogs_error("No ranNasRelCauseList");
goto end;
}
ranNasRelCause = ogs_calloc(1, sizeof(*ranNasRelCause));
if (!ranNasRelCause) {
ogs_error("No ranNasRelCause");
goto end;
}
if (param->ran_nas_release.ngap_cause.group) {
OpenAPI_ng_ap_cause_t *ngApCause = NULL;
ranNasRelCause->ng_ap_cause = ngApCause =
ogs_calloc(1, sizeof(*ngApCause));
if (!ranNasRelCause->ng_ap_cause) {
ogs_error("No ranNasRelCause->ng_ap_cause");
if (ranNasRelCause)
ogs_free(ranNasRelCause);
goto end;
}
ngApCause->group = param->ran_nas_release.ngap_cause.group;
ngApCause->value = param->ran_nas_release.ngap_cause.value;
}
ranNasRelCause->is__5g_mm_cause = true;
ranNasRelCause->_5g_mm_cause = param->ran_nas_release.gmm_cause;
ranNasRelCause->is__5g_sm_cause = true;
ranNasRelCause->_5g_sm_cause = param->ran_nas_release.gsm_cause;
OpenAPI_list_add(ranNasRelCauseList, ranNasRelCause);
}
if (param->ue_location) {
ueLocation.nr_location = ogs_sbi_build_nr_location(
&sess->nr_tai, &sess->nr_cgi);
if (!ueLocation.nr_location) {
ogs_error("ueLocation.nr_location");
goto end;
}
ueLocation.nr_location->ue_location_timestamp =
ogs_sbi_gmtime_string(sess->ue_location_timestamp);
if (!ueLocation.nr_location->ue_location_timestamp) {
ogs_error("ueLocation.nr_location->ue_location_timestamp");
goto end;
}
SmPolicyDeleteData.user_location_info = &ueLocation;
}
if (param->ue_timezone) {
SmPolicyDeleteData.ue_time_zone =
ogs_sbi_timezone_string(ogs_timezone());
if (!SmPolicyDeleteData.ue_time_zone) {
ogs_error("SmPolicyDeleteData.ue_time_zone");
goto end;
}
}
}
SmPolicyDeleteData.serving_network =
ogs_sbi_build_plmn_id_nid(&sess->serving_plmn_id);
if (!SmPolicyDeleteData.serving_network) {
ogs_error("SmPolicyDeleteData.serving_network");
goto end;
}
SmPolicyDeleteData.ran_nas_rel_causes = ranNasRelCauseList;
message.SmPolicyDeleteData = &SmPolicyDeleteData;
request = ogs_sbi_build_request(&message);
ogs_expect(request);
end:
if (message.h.uri)
ogs_free(message.h.uri);
if (ueLocation.nr_location) {
if (ueLocation.nr_location->ue_location_timestamp)
ogs_free(ueLocation.nr_location->ue_location_timestamp);
ogs_sbi_free_nr_location(ueLocation.nr_location);
}
if (SmPolicyDeleteData.ue_time_zone)
ogs_free(SmPolicyDeleteData.ue_time_zone);
OpenAPI_list_for_each(ranNasRelCauseList, node) {
ranNasRelCause = node->data;
if (ranNasRelCause) {
if (ranNasRelCause->ng_ap_cause) {
ogs_free(ranNasRelCause->ng_ap_cause);
}
ogs_free(ranNasRelCause);
}
}
OpenAPI_list_free(ranNasRelCauseList);
if (SmPolicyDeleteData.serving_network)
ogs_sbi_free_plmn_id_nid(SmPolicyDeleteData.serving_network);
return request;
}
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