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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 "ogs-nas-common.h"
void ogs_nas_imeisv_to_bcd(
ogs_nas_mobile_identity_imeisv_t *imeisv, uint8_t imeisv_len, char *bcd)
{
int bcd_len;
bcd[0] = '0' + imeisv->digit1;
bcd[1] = '0' + imeisv->digit2;
bcd[2] = '0' + imeisv->digit3;
bcd[3] = '0' + imeisv->digit4;
bcd[4] = '0' + imeisv->digit5;
bcd[5] = '0' + imeisv->digit6;
bcd[6] = '0' + imeisv->digit7;
bcd[7] = '0' + imeisv->digit8;
bcd[8] = '0' + imeisv->digit9;
bcd[9] = '0' + imeisv->digit10;
bcd[10] = '0' + imeisv->digit11;
bcd[11] = '0' + imeisv->digit12;
bcd[12] = '0' + imeisv->digit13;
bcd[13] = '0' + imeisv->digit14;
bcd[14] = '0' + imeisv->digit15;
bcd[15] = '0' + imeisv->digit16;
bcd[16] = '0' + imeisv->digit17;
bcd_len = imeisv_len * 2 - 1;
if (!imeisv->odd_even) { /* if bcd length is even */
if (imeisv->digit17 != 0xf) {
ogs_warn("Spec warning : bcd[%d] = 0x%x, 0x%x",
bcd_len-1, imeisv->digit17, bcd[bcd_len-1]);
}
(bcd_len)--;
}
bcd[bcd_len] = 0;
}
void *ogs_nas_imeisv_bcd_to_buffer(const char *in, uint8_t *out, int *out_len)
{
/*
* TS38.413
* 9.3.1.54 Masked IMEISV
*
* The first to fourth bits correspond to the first digit of the IMEISV,
* the fifth to eighth bits correspond to the second digit of the IMEISV,
* and so on
*
* IMEISV buffer uses different ordering.
* So, I'll other function instead of ogs_bcd_to_buffer();
*
*/
return ogs_bcd_to_buffer_reverse_order(in, out, out_len);
}
int ogs_nas_gprs_timer_from_sec(
ogs_nas_gprs_timer_t *gprs_timer, ogs_time_t sec)
{
ogs_time_t timer_value = sec;
ogs_assert(gprs_timer);
memset(gprs_timer, 0, sizeof(*gprs_timer));
if (timer_value <= 63) {
if (timer_value%2 != 0) {
ogs_error("Not multiples of 2 seconds");
return OGS_ERROR;
}
gprs_timer->value = timer_value / 2;
} else {
if (timer_value%60 != 0) {
ogs_error("Not multiples of 1 minute");
return OGS_ERROR;
}
timer_value /= 60; /* multiples of 1 minute */
if (timer_value <= 31) {
gprs_timer->unit = OGS_NAS_GPRS_TIMER_UNIT_MULTIPLES_OF_1_MM;
gprs_timer->value = timer_value;
} else {
if (timer_value%6 != 0) {
ogs_error("Not multiples of decihours(= 6 minutes)");
return OGS_ERROR;
}
timer_value /= 6; /* multiples of decihours = 6 minutes */
if (timer_value <= 31) {
gprs_timer->unit = OGS_NAS_GPRS_TIMER_UNIT_MULTIPLES_OF_DECI_HH;
gprs_timer->value = timer_value;
} else {
ogs_error("Overflow!");
return OGS_ERROR;
}
}
}
return OGS_OK;
}
int ogs_nas_gprs_timer_3_from_sec(
ogs_nas_gprs_timer_t *gprs_timer, ogs_time_t sec)
{
ogs_time_t timer_value = sec;
ogs_assert(gprs_timer);
memset(gprs_timer, 0, sizeof(*gprs_timer));
if (timer_value <= 63) {
if (timer_value%2 != 0) {
ogs_error("Not multiples of 2 seconds");
return OGS_ERROR;
}
gprs_timer->unit = OGS_NAS_GPRS_TIMER_3_UNIT_MULTIPLES_OF_2_SS;
gprs_timer->value = timer_value / 2;
} else {
if (timer_value%60 != 0) {
ogs_error("Not multiples of 1 minute");
return OGS_ERROR;
}
timer_value /= 60; /* multiples of 1 minute */
if (timer_value <= 31) {
gprs_timer->unit = OGS_NAS_GPRS_TIMER_3_UNIT_MULTIPLES_OF_1_MM;
gprs_timer->value = timer_value;
} else {
if (timer_value%10 != 0) {
ogs_error("Not multiples of decihours(= 10 minutes)");
return OGS_ERROR;
}
timer_value /= 10; /* multiples of decihours = 10 mintues */
if (timer_value <= 31) {
gprs_timer->unit = OGS_NAS_GPRS_TIMER_3_UNIT_MULTIPLES_OF_10_MM;
gprs_timer->value = timer_value;
} else {
if (timer_value%6 != 0) {
ogs_error("Not multiples of 1 hour");
return OGS_ERROR;
}
timer_value /= 6; /* multiples of 1 hour */
if (timer_value <= 31) {
gprs_timer->unit =
OGS_NAS_GPRS_TIMER_3_UNIT_MULTIPLES_OF_1_HH;
gprs_timer->value = timer_value;
} else {
if (timer_value%10 != 0) {
ogs_error("Not multiples of 10 hours");
return OGS_ERROR;
}
timer_value /= 10; /* multiples of 10 hours */
if (timer_value <= 31) {
gprs_timer->unit =
OGS_NAS_GPRS_TIMER_3_UNIT_MULTIPLES_OF_10_HH;
gprs_timer->value = timer_value;
} else {
if (timer_value%32 != 0) {
ogs_error("Not multiples of 10 hours");
return OGS_ERROR;
}
timer_value /= 32; /* multiples of 320 hours */
if (timer_value <= 31) {
gprs_timer->unit =
OGS_NAS_GPRS_TIMER_3_UNIT_MULTIPLES_OF_320_HH;
gprs_timer->value = timer_value;
} else {
ogs_error("Overflow!");
return OGS_ERROR;
}
}
}
}
}
}
return OGS_OK;
}
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