forked from acouzens/open5gs
83 lines
2.8 KiB
C
83 lines
2.8 KiB
C
/*
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* Copyright (C) 2019,2020 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "ogs-nas-eps.h"
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void ogs_nas_eps_imsi_to_bcd(
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ogs_nas_mobile_identity_imsi_t *imsi, uint8_t imsi_len, char *bcd)
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{
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int bcd_len;
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ogs_assert(imsi && imsi_len);
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bcd[0] = '0' + imsi->digit1;
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bcd[1] = '0' + imsi->digit2;
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bcd[2] = '0' + imsi->digit3;
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bcd[3] = '0' + imsi->digit4;
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bcd[4] = '0' + imsi->digit5;
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bcd[5] = '0' + imsi->digit6;
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bcd[6] = '0' + imsi->digit7;
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bcd[7] = '0' + imsi->digit8;
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bcd[8] = '0' + imsi->digit9;
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bcd[9] = '0' + imsi->digit10;
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bcd[10] = '0' + imsi->digit11;
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bcd[11] = '0' + imsi->digit12;
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bcd[12] = '0' + imsi->digit13;
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bcd[13] = '0' + imsi->digit14;
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bcd[14] = '0' + imsi->digit15;
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bcd_len = imsi_len * 2 - 1;
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if (!imsi->odd_even) { /* if bcd length is even */
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if (imsi->digit15 != 0xf)
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ogs_warn("Spec warning : bcd[%d] = 0x%x, 0x%x",
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bcd_len-1, imsi->digit15, bcd[bcd_len-1]);
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(bcd_len)--;
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}
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bcd[bcd_len] = 0;
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}
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void ogs_nas_imsi_to_buffer(
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ogs_nas_mobile_identity_imsi_t *imsi, uint8_t imsi_len,
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uint8_t *buf, uint8_t *buf_len)
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{
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buf[0] = ((('0' + imsi->digit2) << 4) & 0xf0) |
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(('0' + imsi->digit1) & 0x0f);
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buf[1] = ((('0' + imsi->digit4) << 4) & 0xf0) |
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(('0' + imsi->digit3) & 0x0f);
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buf[2] = ((('0' + imsi->digit6) << 4) & 0xf0) |
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(('0' + imsi->digit5) & 0x0f);
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buf[3] = ((('0' + imsi->digit8) << 4) & 0xf0) |
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(('0' + imsi->digit7) & 0x0f);
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buf[4] = ((('0' + imsi->digit10) << 4) & 0xf0) |
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(('0' + imsi->digit9) & 0x0f);
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buf[5] = ((('0' + imsi->digit12) << 4) & 0xf0) |
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(('0' + imsi->digit11) & 0x0f);
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buf[6] = ((('0' + imsi->digit14) << 4) & 0xf0) |
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(('0' + imsi->digit13) & 0x0f);
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buf[7] = ((('0' + imsi->digit15)) & 0x0f);
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*buf_len = imsi_len;
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if (!imsi->odd_even) { /* if imsi length is even */
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(*buf_len)--;
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if ((buf[*buf_len] & 0xf) != 0xf)
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ogs_warn("Spec warning : buf[%d] = 0x%x", *buf_len, buf[*buf_len]);
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}
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}
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