97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <stdlib.h>
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#include <stdint.h>
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#include <ctype.h>
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#include "conversions.h"
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static const char hex_to_ascii_table[16] = {
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'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f',
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};
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static const signed char ascii_to_hex_table[0x100] = {
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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0, 1, 2, 3, 4, 5, 6, 7, 8, 9,-1,-1,-1,-1,-1,-1,
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-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,10,11,12,13,14,15,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
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};
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void hexa_to_ascii(uint8_t *from, char *to, size_t length)
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{
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int i;
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for(i = 0; i < length; i++) {
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uint8_t upper = (from[i] & 0xf0) >> 4;
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uint8_t lower = from[i] & 0x0f;
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to[2 * i] = hex_to_ascii_table[upper];
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to[2 * i + 1] = hex_to_ascii_table[lower];
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}
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}
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int ascii_to_hex(uint8_t *dst, const char *h)
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{
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const unsigned char *hex = (const unsigned char *) h;
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unsigned i = 0;
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for (;;) {
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int high, low;
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while (*hex && isspace(*hex))
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hex++;
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if (!*hex)
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return 1;
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high = ascii_to_hex_table[*hex++];
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if (high < 0)
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return 0;
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while (*hex && isspace(*hex))
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hex++;
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if (!*hex)
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return 0;
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low = ascii_to_hex_table[*hex++];
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if (low < 0)
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return 0;
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dst[i++] = (high << 4) | low;
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}
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}
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