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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 "n4-build.h"
ogs_pkbuf_t *upf_n4_build_session_establishment_response(uint8_t type,
upf_sess_t *sess, ogs_pfcp_pdr_t *created_pdr[], int num_of_created_pdr)
{
ogs_pfcp_message_t *pfcp_message = NULL;
ogs_pfcp_session_establishment_response_t *rsp = NULL;
ogs_pkbuf_t *pkbuf = NULL;
int i = 0, j = 0;
ogs_pfcp_node_id_t node_id;
ogs_pfcp_f_seid_t f_seid;
int len = 0;
ogs_debug("Session Establishment Response");
pfcp_message = ogs_calloc(1, sizeof(*pfcp_message));
if (!pfcp_message) {
ogs_error("ogs_calloc() failed");
return NULL;
}
rsp = &pfcp_message->pfcp_session_establishment_response;
/* Node ID */
ogs_pfcp_sockaddr_to_node_id(&node_id, &len);
rsp->node_id.presence = 1;
rsp->node_id.data = &node_id;
rsp->node_id.len = len;
/* Cause */
rsp->cause.presence = 1;
rsp->cause.u8 = OGS_PFCP_CAUSE_REQUEST_ACCEPTED;
/* F-SEID */
ogs_pfcp_sockaddr_to_f_seid(&f_seid, &len);
f_seid.seid = htobe64(sess->upf_n4_seid);
rsp->up_f_seid.presence = 1;
rsp->up_f_seid.data = &f_seid;
rsp->up_f_seid.len = len;
ogs_pfcp_pdrbuf_init();
/* Created PDR */
for (i = 0, j = 0; i < num_of_created_pdr; i++) {
bool pdr_presence = ogs_pfcp_build_created_pdr(
&rsp->created_pdr[j], i, created_pdr[i]);
if (pdr_presence == true) j++;
}
pfcp_message->h.type = type;
pkbuf = ogs_pfcp_build_msg(pfcp_message);
ogs_expect(pkbuf);
ogs_pfcp_pdrbuf_clear();
ogs_free(pfcp_message);
return pkbuf;
}
ogs_pkbuf_t *upf_n4_build_session_modification_response(uint8_t type,
upf_sess_t *sess, ogs_pfcp_pdr_t *created_pdr[], int num_of_created_pdr)
{
ogs_pfcp_message_t *pfcp_message = NULL;
ogs_pfcp_session_modification_response_t *rsp = NULL;
ogs_pkbuf_t *pkbuf = NULL;
int i = 0, j = 0;
ogs_debug("Session Modification Response");
pfcp_message = ogs_calloc(1, sizeof(*pfcp_message));
if (!pfcp_message) {
ogs_error("ogs_calloc() failed");
return NULL;
}
rsp = &pfcp_message->pfcp_session_modification_response;
/* Cause */
rsp->cause.presence = 1;
rsp->cause.u8 = OGS_PFCP_CAUSE_REQUEST_ACCEPTED;
ogs_pfcp_pdrbuf_init();
/* Created PDR */
for (i = 0, j = 0; i < num_of_created_pdr; i++) {
bool pdr_presence = ogs_pfcp_build_created_pdr(
&rsp->created_pdr[j], i, created_pdr[i]);
if (pdr_presence == true) j++;
}
pfcp_message->h.type = type;
pkbuf = ogs_pfcp_build_msg(pfcp_message);
ogs_expect(pkbuf);
ogs_pfcp_pdrbuf_clear();
ogs_free(pfcp_message);
return pkbuf;
}
ogs_pkbuf_t *upf_n4_build_session_deletion_response(uint8_t type,
upf_sess_t *sess)
{
ogs_pfcp_urr_t *urr = NULL;
ogs_pfcp_user_plane_report_t report;
size_t num_of_reports = 0;
ogs_debug("Session Deletion Response");
memset(&report, 0, sizeof(report));
ogs_list_for_each(&sess->pfcp.urr_list, urr) {
ogs_assert(num_of_reports < OGS_ARRAY_SIZE(report.usage_report));
upf_sess_urr_acc_fill_usage_report(sess, urr, &report, num_of_reports);
report.usage_report[num_of_reports].rep_trigger.termination_report = 1;
num_of_reports++;
upf_sess_urr_acc_snapshot(sess, urr);
}
report.num_of_usage_report = num_of_reports;
return ogs_pfcp_build_session_deletion_response(type, OGS_PFCP_CAUSE_REQUEST_ACCEPTED,
&report);
}
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