nuttx/netutils/uiplib/uiplib.c

79 lines
2.6 KiB
C
Raw Normal View History

/****************************************************************************
* netutils/uiplib/uiplib.c
* Various uIP library functions.
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Based on uIP which also has a BSD style license:
*
* Author: Adam Dunkels <adam@sics.se>
* 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <net/uip/uip.h>
#include <net/uip/uip-lib.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;
}