2019-10-27 08:41:14 +00:00
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/*
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* Copyright (C) 2019 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 "core-config-private.h"
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#if HAVE_CTYPE_H
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#include <ctype.h>
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#endif
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#include "ogs-core.h"
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void *ogs_ascii_to_hex(char *in, int in_len, void *out, int out_len)
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{
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int i = 0, j = 0, k = 0, hex;
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uint8_t *out_p = out;
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2019-11-18 11:21:20 +00:00
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while(i < in_len && j < out_len) {
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if (!isspace(in[i])) {
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2019-10-27 08:41:14 +00:00
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hex = isdigit(in[i]) ? in[i] - '0' :
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islower(in[i]) ? in[i] - 'a' + 10 : in[i] - 'A' + 10;
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2019-11-18 11:21:20 +00:00
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if ((k & 0x1) == 0) {
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2019-10-27 08:41:14 +00:00
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out_p[j] = (hex << 4);
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2019-11-18 11:21:20 +00:00
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} else {
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2019-10-27 08:41:14 +00:00
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out_p[j] |= hex;
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j++;
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}
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k++;
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}
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i++;
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}
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return out;
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}
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void *ogs_hex_to_ascii(void *in, int in_len, void *out, int out_len)
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{
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char *p;
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int i = 0, l, off = 0;
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p = out;
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p[0] = 0;
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l = (in_len - off) > out_len ? out_len : in_len - off;
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2019-11-18 11:21:20 +00:00
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for (i = 0; i < l; i++) {
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2020-06-04 18:12:05 +00:00
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p += sprintf(p, "%02x", ((char*)in)[off+i] & 0xff);
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2019-10-27 08:41:14 +00:00
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}
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return out;
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}
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void *ogs_uint64_to_buffer(uint64_t num, int size, void *buffer)
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{
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int i;
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uint8_t *buffer_p = buffer;
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for (i = 0; i < size; i++)
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buffer_p[i] = (num >> ((size-1-i) * 8)) & 0xff;
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return buffer;
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}
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uint64_t ogs_buffer_to_uint64(void *buffer, int size)
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{
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uint64_t num = 0;
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uint8_t *buffer_p = buffer;
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int i;
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2019-11-18 11:21:20 +00:00
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for (i = 0; i < size; i++) {
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2019-10-27 08:41:14 +00:00
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num |= (((uint64_t)buffer_p[i]) << ((size-1-i) * 8));
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}
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return num;
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}
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void *ogs_bcd_to_buffer(const char *in, void *out, int *out_len)
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{
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int i = 0;
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uint8_t *out_p = out;
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int in_len = strlen(in);
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2019-11-18 11:21:20 +00:00
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for (i = 0; i < in_len; i++) {
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2019-10-27 08:41:14 +00:00
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if (i & 0x01)
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out_p[i>>1] = out_p[i>>1] | (((in[i] - 0x30) << 4) & 0xF0);
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else
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out_p[i>>1] = (in[i] - 0x30) & 0x0F;
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}
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*out_len = (in_len + 1) / 2;
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2019-11-18 11:21:20 +00:00
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if (in_len & 0x01) {
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2019-10-27 08:41:14 +00:00
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out_p[(*out_len)-1] |= 0xF0;
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}
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return out;
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}
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void *ogs_buffer_to_bcd(uint8_t *in, int in_len, void *out)
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{
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int i = 0;
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uint8_t *out_p = out;
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2019-11-18 11:21:20 +00:00
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for (i = 0; i < in_len-1; i++) {
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2019-10-27 08:41:14 +00:00
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out_p[i*2] = 0x30 + (in[i] & 0x0F);
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out_p[i*2+1] = 0x30 + ((in[i] & 0xF0) >> 4);
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}
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2019-11-18 11:21:20 +00:00
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if ((in[i] & 0xF0) == 0xF0) {
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2019-10-27 08:41:14 +00:00
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out_p[i*2] = 0x30 + (in[i] & 0x0F);
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out_p[i*2+1] = 0;
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2019-11-18 11:21:20 +00:00
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} else {
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2019-10-27 08:41:14 +00:00
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out_p[i*2] = 0x30 + (in[i] & 0x0F);
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out_p[i*2+1] = 0x30 + ((in[i] & 0xF0) >> 4);
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out_p[i*2+2] = 0;
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}
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return out;
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}
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2020-05-18 21:00:37 +00:00
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char ogs_from_hex(char ch)
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{
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return isdigit(ch) ? ch - '0' : tolower(ch) - 'a' + 10;
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}
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