110 lines
3.5 KiB
C
110 lines
3.5 KiB
C
/****************************************************************************
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* netutils/netlib/netlib_nodeaddrconv.c
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*
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* Copyright (C) 2017 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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#include <nuttx/net/sixlowpan.h>
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#include "netutils/netlib.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: netlib_nodeaddrconv
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****************************************************************************/
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bool netlib_nodeaddrconv(FAR const char *hwstr, FAR uint8_t *hw)
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{
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unsigned char tmp;
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unsigned char i;
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unsigned char j;
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char ch;
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/* Form xx:xx or xx:xx:xx:xx:xx:xx:xx:xx for extended Rime address */
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if (strlen(hwstr) != 3 * NET_6LOWPAN_ADDRSIZE - 1)
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{
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return false;
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}
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tmp = 0;
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for (i = 0; i < NET_6LOWPAN_ADDRSIZE; ++i)
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{
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j = 0;
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do
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{
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ch = *hwstr++;
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if (++j > 3)
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{
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return false;
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}
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if (ch == ':' || ch == '\0')
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{
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*hw++ = tmp;
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tmp = 0;
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}
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else if (ch >= '0' && ch <= '9')
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{
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tmp = (tmp << 4) + (ch - '0');
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}
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else if (ch >= 'a' && ch <= 'f')
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{
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tmp = (tmp << 4) + (ch - 'a' + 10);
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}
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else if (ch >= 'A' && ch <= 'F')
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{
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tmp = (tmp << 4) + (ch - 'A' + 10);
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}
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else
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{
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return false;
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}
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}
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while (ch != ':' && ch != 0);
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}
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return true;
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}
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