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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 "fd-path.h"
int smf_fd_init(void)
{
int rv;
if (smf_self()->diam_conf_path == NULL &&
(smf_self()->diam_config->cnf_diamid == NULL ||
smf_self()->diam_config->cnf_diamrlm == NULL ||
smf_self()->diam_config->cnf_addr == NULL)) {
ogs_warn("No diameter configuration");
return OGS_OK;
}
rv = ogs_diam_init(FD_MODE_CLIENT|FD_MODE_SERVER,
smf_self()->diam_conf_path, smf_self()->diam_config);
ogs_assert(rv == 0);
rv = smf_gx_init();
ogs_assert(rv == OGS_OK);
rv = smf_gy_init();
ogs_assert(rv == OGS_OK);
rv = ogs_diam_rx_init();
ogs_assert(rv == 0);
rv = smf_s6b_init();
ogs_assert(rv == OGS_OK);
rv = ogs_diam_start();
ogs_assert(rv == 0);
return OGS_OK;
}
void smf_fd_final(void)
{
if (smf_self()->diam_conf_path == NULL &&
(smf_self()->diam_config->cnf_diamid == NULL ||
smf_self()->diam_config->cnf_diamrlm == NULL ||
smf_self()->diam_config->cnf_addr == NULL)) {
return;
}
smf_gx_final();
smf_gy_final();
smf_s6b_final();
ogs_diam_final();
}
/* Append 3GPP-User-Location-Info, 3GPP TS 29.061 16.4.7.2 22 */
void smf_fd_msg_avp_add_3gpp_uli(smf_sess_t *sess, struct msg *req)
{
struct avp *avpch1;
union avp_value val;
ogs_gtp2_uli_t uli;
int16_t uli_len;
uint8_t uli_buf[OGS_GTP2_MAX_ULI_LEN], reencoded_uli_buf[OGS_GTP2_MAX_ULI_LEN];
uint8_t uli_type;
int ret;
ogs_gtp2_tlv_uli_t reencoded_uli;
if (sess->gtp.user_location_information.presence == 0)
return;
if (sess->gtp.version == 1) {
/* For GTPv1C, it's a 1-1 coding match with TS 29.060 7.7.51: */
ret = fd_msg_avp_new(
ogs_diam_gy_3gpp_user_location_info, 0, &avpch1);
ogs_assert(ret == 0);
val.os.data = sess->gtp.user_location_information.data;
val.os.len = sess->gtp.user_location_information.len;
ret = fd_msg_avp_setvalue(avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
return;
}
/* GTPv2C and Diameter 3GPP-User-Location-Information encoding don't match */
uli_len = ogs_gtp2_parse_uli(
&uli, &sess->gtp.user_location_information);
if (sess->gtp.user_location_information.len != uli_len) {
ogs_error("Invalid User Location Information(ULI)");
return;
}
ogs_assert(sess->gtp.user_location_information.data);
ogs_assert(sess->gtp.user_location_information.len);
memcpy(&uli_buf, sess->gtp.user_location_information.data,
sess->gtp.user_location_information.len);
/* Update Gy ULI Type */
if (uli.flags.cgi) {
uli_type = OGS_DIAM_GY_3GPP_USER_LOCATION_INFO_TYPE_CGI;
uli.flags.octet = 0; uli.flags.cgi = 1;
} else if (uli.flags.sai) {
uli_type = OGS_DIAM_GY_3GPP_USER_LOCATION_INFO_TYPE_SAI;
uli.flags.octet = 0; uli.flags.sai = 1;
} else if (uli.flags.rai) {
uli_type = OGS_DIAM_GY_3GPP_USER_LOCATION_INFO_TYPE_RAI;
uli.flags.octet = 0; uli.flags.rai = 1;
} else if (uli.flags.tai && uli.flags.e_cgi) {
uli_type = OGS_DIAM_GY_3GPP_USER_LOCATION_INFO_TYPE_TAI_AND_ECGI;
uli.flags.octet = 0; uli.flags.tai = 1; uli.flags.e_cgi = 1;
} else if (uli.flags.tai && uli.flags.enodeb_id) {
uli_type = OGS_DIAM_GY_3GPP_USER_LOCATION_INFO_TYPE_TAI_AND_ENODEB_ID;
uli.flags.octet = 0; uli.flags.tai = 1; uli.flags.enodeb_id = 1;
} else if (uli.flags.tai && uli.flags.ext_enodeb_id) {
uli_type = OGS_DIAM_GY_3GPP_USER_LOCATION_INFO_TYPE_TAI_AND_EXT_ENODEB_ID;
uli.flags.octet = 0; uli.flags.tai = 1; uli.flags.ext_enodeb_id = 1;
} else if (uli.flags.tai) {
uli_type = OGS_DIAM_GY_3GPP_USER_LOCATION_INFO_TYPE_TAI;
uli.flags.octet = 0; uli.flags.tai = 1;
} else if (uli.flags.e_cgi) {
uli_type = OGS_DIAM_GY_3GPP_USER_LOCATION_INFO_TYPE_ECGI;
uli.flags.octet = 0; uli.flags.e_cgi = 1;
} else {
ogs_error("Unexpected ULI content, unable to convert to Diameter!");
return;
}
/* Reencode ULI dropping unrelated values: */
uli_len = ogs_gtp2_build_uli(&reencoded_uli, &uli,
reencoded_uli_buf, sizeof(reencoded_uli_buf));
reencoded_uli_buf[0] = uli_type;
ret = fd_msg_avp_new(
ogs_diam_gy_3gpp_user_location_info, 0, &avpch1);
ogs_assert(ret == 0);
val.os.data = (uint8_t *)&reencoded_uli_buf;
val.os.len = uli_len;
ret = fd_msg_avp_setvalue(avpch1, &val);
ogs_assert(ret == 0);
ret = fd_msg_avp_add(req, MSG_BRW_LAST_CHILD, avpch1);
ogs_assert(ret == 0);
}
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