mirror of
https://github.com/gnuton/asuswrt-merlin.ng.git
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154 lines
3.8 KiB
C
154 lines
3.8 KiB
C
/***********************************************************************
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*
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* Copyright (c) 2007 Broadcom Corporation
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* All Rights Reserved
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*
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<:label-BRCM:2012:DUAL/GPL:standard
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Unless you and Broadcom execute a separate written software license
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agreement governing use of this software, this software is licensed
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to you under the terms of the GNU General Public License version 2
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(the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php,
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with the following added to such license:
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As a special exception, the copyright holders of this software give
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you permission to link this software with independent modules, and
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to copy and distribute the resulting executable under terms of your
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choice, provided that you also meet, for each linked independent
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module, the terms and conditions of the license of that module.
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An independent module is a module which is not derived from this
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software. The special exception does not apply to any modifications
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of the software.
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Not withstanding the above, under no circumstances may you combine
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this software in any way with any other Broadcom software provided
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under a license other than the GPL, without Broadcom's express prior
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written consent.
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:>
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*
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************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "genutil_hexbinary.h"
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SINT32 genUtl_binaryBufToHexStringMalloc(const UINT8 *binaryBuf,
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UINT32 binaryBufLen,
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char **hexStr)
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{
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UINT32 hexStrLen;
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SINT32 ret;
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if (binaryBuf == NULL || binaryBufLen == 0 || hexStr == NULL)
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{
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return HEXRET_INVALID_ARGUMENTS;
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}
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hexStrLen = binaryBufLen * 2 + 1;
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*hexStr = calloc(1, hexStrLen);
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if (*hexStr == NULL)
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{
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return HEXRET_RESOURCE_EXCEEDED;
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}
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ret = genUtl_binaryBufToHexString(binaryBuf, binaryBufLen, *hexStr);
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if (ret != HEXRET_SUCCESS)
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{
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free(*hexStr);
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*hexStr = NULL;
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}
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return ret;
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}
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SINT32 genUtl_binaryBufToHexString(const UINT8 *binaryBuf, UINT32 binaryBufLen, char *hexStr)
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{
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UINT32 i, j;
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if (binaryBuf == NULL || binaryBufLen == 0 || hexStr == NULL)
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{
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return HEXRET_INVALID_ARGUMENTS;
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}
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for (i=0, j=0; i < binaryBufLen; i++, j+=2)
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{
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sprintf(&(hexStr[j]), "%02x", binaryBuf[i]);
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}
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return HEXRET_SUCCESS;
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}
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SINT32 genUtl_hexStringToBinaryBufMalloc(const char *hexStr,
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UINT8 **binaryBuf)
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{
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SINT32 ret;
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if (hexStr == NULL || hexStr[0] == '\0' || binaryBuf == NULL)
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{
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return HEXRET_INVALID_ARGUMENTS;
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}
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*binaryBuf = calloc(1, strlen(hexStr)/2);
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if (*binaryBuf == NULL)
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{
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return HEXRET_RESOURCE_EXCEEDED;
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}
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ret = genUtl_hexStringToBinaryBuf(hexStr, *binaryBuf);
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if (ret != HEXRET_SUCCESS)
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{
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free(*binaryBuf);
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*binaryBuf = NULL;
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}
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return ret;
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}
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SINT32 genUtl_hexStringToBinaryBuf(const char *hexStr, UINT8 *binaryBuf)
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{
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UINT32 len;
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UINT32 i, j;
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if (hexStr == NULL || binaryBuf == NULL)
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{
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return HEXRET_INVALID_ARGUMENTS;
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}
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len = strlen(hexStr);
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if ((len < 2) || (len % 2 != 0))
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{
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/* hexStr must be at least 2 and an even number of characters */
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return HEXRET_INVALID_ARGUMENTS;
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}
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/* convert 2 hex digits at a time to handle very long strings */
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for (i=0, j=0; j < len; i++, j+=2)
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{
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UINT64 val;
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char tmpbuf[3];
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tmpbuf[0] = hexStr[j];
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tmpbuf[1] = hexStr[j+1];
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tmpbuf[2] = 0;
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val = strtoul(tmpbuf, NULL, 16);
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/* strtoul will return ULONG_MAX on error */
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if (val > 255)
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{
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return HEXRET_CONVERSION_ERROR;
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}
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else
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{
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binaryBuf[i] = (UINT8) val;
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}
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}
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return HEXRET_SUCCESS;
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}
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