FreeRTOS-RISCV/FreeRTOSv10.2.1/FreeRTOS/Demo/Common/ethernet/FreeRTOS-uIP/uiplib.c

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2019-06-28 23:08:36 +02:00
/*
* Copyright (c) 2004, Adam Dunkels and the Swedish Institute of
* Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This file is part of the uIP TCP/IP stack
*
* $Id: uiplib.c,v 1.2 2006/06/12 08:00:31 adam Exp $
*
*/
#include "uip.h"
#include "uiplib.h"
/*-----------------------------------------------------------------------------------*/
unsigned char uiplib_ipaddrconv( char *addrstr, unsigned char *ipaddr )
{
unsigned char tmp;
char c;
unsigned char i, j;
tmp = 0;
for( i = 0; i < 4; ++i )
{
j = 0;
do
{
c = *addrstr;
++j;
if( j > 4 )
{
return 0;
}
if( c == '.' || c == 0 )
{
*ipaddr = tmp;
++ipaddr;
tmp = 0;
}
else if( c >= '0' && c <= '9' )
{
tmp = ( tmp * 10 ) + ( c - '0' );
}
else
{
return 0;
}
++addrstr;
} while( c != '.' && c != 0 );
}
return 1;
}
/*-----------------------------------------------------------------------------------*/