97 lines
3.2 KiB
C
97 lines
3.2 KiB
C
/****************************************************************************
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* netutils/netlib/netlib_ipv4addrconv.c
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*
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* Copyright (C) 2007, 2009, 2011, 2016 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Based on uIP which also has a BSD style license:
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*
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* Author: Adam Dunkels <adam@sics.se>
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* Copyright (c) 2004, Adam Dunkels and the Swedish Institute of
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* Computer Science.
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* All rights reserved.
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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 the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE 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 "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_ipv4addrconv
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****************************************************************************/
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bool netlib_ipv4addrconv(FAR const char *addrstr, FAR uint8_t *ipaddr)
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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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tmp = 0;
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for (i = 0; i < 4; ++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 = *addrstr++;
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if (++j > 4)
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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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*ipaddr++ = 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 * 10) + (ch - '0');
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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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