mirror of https://github.com/GOSTSec/sgminer
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
263 lines
6.4 KiB
263 lines
6.4 KiB
13 years ago
|
/* inet_pton.c -- convert IPv4 and IPv6 addresses from text to binary form
|
||
|
|
||
|
Copyright (C) 2006 Free Software Foundation, Inc.
|
||
|
|
||
|
This program is free software; you can redistribute it and/or modify
|
||
|
it under the terms of the GNU General Public License as published by
|
||
|
the Free Software Foundation; either version 2, or (at your option)
|
||
|
any later version.
|
||
|
|
||
|
This program is distributed in the hope that it will be useful,
|
||
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
GNU General Public License for more details.
|
||
|
|
||
|
You should have received a copy of the GNU General Public License
|
||
|
along with this program; if not, write to the Free Software Foundation,
|
||
|
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
|
||
|
|
||
|
/*
|
||
|
* Copyright (c) 1996,1999 by Internet Software Consortium.
|
||
|
*
|
||
|
* Permission to use, copy, modify, and distribute this software for any
|
||
|
* purpose with or without fee is hereby granted, provided that the above
|
||
|
* copyright notice and this permission notice appear in all copies.
|
||
|
*
|
||
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
|
||
|
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
|
||
|
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
|
||
|
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
|
||
|
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
|
||
|
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
|
||
|
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
|
||
|
* SOFTWARE.
|
||
|
*/
|
||
|
|
||
|
/*
|
||
|
#include <config.h>
|
||
|
*/
|
||
|
|
||
|
/* Specification. */
|
||
|
/*
|
||
|
#include "inet_pton.h"
|
||
|
|
||
|
#include <ctype.h>
|
||
|
#include <string.h>
|
||
|
#include <errno.h>
|
||
|
*/
|
||
|
|
||
|
#ifndef EAFNOSUPPORT
|
||
|
# define EAFNOSUPPORT EINVAL
|
||
|
#endif
|
||
|
|
||
|
#define NS_INADDRSZ 4
|
||
|
#define NS_IN6ADDRSZ 16
|
||
|
#define NS_INT16SZ 2
|
||
|
|
||
|
/*
|
||
|
* WARNING: Don't even consider trying to compile this on a system where
|
||
|
* sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
|
||
|
*/
|
||
|
|
||
|
static int inet_pton4 (const char *src, unsigned char *dst);
|
||
|
#if HAVE_IPV6
|
||
|
static int inet_pton6 (const char *src, unsigned char *dst);
|
||
|
#endif
|
||
|
|
||
|
/* int
|
||
|
* inet_pton(af, src, dst)
|
||
|
* convert from presentation format (which usually means ASCII printable)
|
||
|
* to network format (which is usually some kind of binary format).
|
||
|
* return:
|
||
|
* 1 if the address was valid for the specified address family
|
||
|
* 0 if the address wasn't valid (`dst' is untouched in this case)
|
||
|
* -1 if some other error occurred (`dst' is untouched in this case, too)
|
||
|
* author:
|
||
|
* Paul Vixie, 1996.
|
||
|
*/
|
||
|
int
|
||
|
inet_pton (int af, const char *restrict src, void *restrict dst)
|
||
|
{
|
||
|
switch (af)
|
||
|
{
|
||
|
case AF_INET:
|
||
|
return (inet_pton4 (src, dst));
|
||
|
|
||
|
#if HAVE_IPV6
|
||
|
case AF_INET6:
|
||
|
return (inet_pton6 (src, dst));
|
||
|
#endif
|
||
|
|
||
|
default:
|
||
|
errno = EAFNOSUPPORT;
|
||
|
return (-1);
|
||
|
}
|
||
|
/* NOTREACHED */
|
||
|
}
|
||
|
|
||
|
/* int
|
||
|
* inet_pton4(src, dst)
|
||
|
* like inet_aton() but without all the hexadecimal, octal (with the
|
||
|
* exception of 0) and shorthand.
|
||
|
* return:
|
||
|
* 1 if `src' is a valid dotted quad, else 0.
|
||
|
* notice:
|
||
|
* does not touch `dst' unless it's returning 1.
|
||
|
* author:
|
||
|
* Paul Vixie, 1996.
|
||
|
*/
|
||
|
static int
|
||
|
inet_pton4 (const char *restrict src, unsigned char *restrict dst)
|
||
|
{
|
||
|
int saw_digit, octets, ch;
|
||
|
unsigned char tmp[NS_INADDRSZ], *tp;
|
||
|
|
||
|
saw_digit = 0;
|
||
|
octets = 0;
|
||
|
*(tp = tmp) = 0;
|
||
|
while ((ch = *src++) != '\0')
|
||
|
{
|
||
|
|
||
|
if (ch >= '0' && ch <= '9')
|
||
|
{
|
||
|
unsigned new = *tp * 10 + (ch - '0');
|
||
|
|
||
|
if (saw_digit && *tp == 0)
|
||
|
return (0);
|
||
|
if (new > 255)
|
||
|
return (0);
|
||
|
*tp = new;
|
||
|
if (!saw_digit)
|
||
|
{
|
||
|
if (++octets > 4)
|
||
|
return (0);
|
||
|
saw_digit = 1;
|
||
|
}
|
||
|
}
|
||
|
else if (ch == '.' && saw_digit)
|
||
|
{
|
||
|
if (octets == 4)
|
||
|
return (0);
|
||
|
*++tp = 0;
|
||
|
saw_digit = 0;
|
||
|
}
|
||
|
else
|
||
|
return (0);
|
||
|
}
|
||
|
if (octets < 4)
|
||
|
return (0);
|
||
|
memcpy (dst, tmp, NS_INADDRSZ);
|
||
|
return (1);
|
||
|
}
|
||
|
|
||
|
#if HAVE_IPV6
|
||
|
|
||
|
/* int
|
||
|
* inet_pton6(src, dst)
|
||
|
* convert presentation level address to network order binary form.
|
||
|
* return:
|
||
|
* 1 if `src' is a valid [RFC1884 2.2] address, else 0.
|
||
|
* notice:
|
||
|
* (1) does not touch `dst' unless it's returning 1.
|
||
|
* (2) :: in a full address is silently ignored.
|
||
|
* credit:
|
||
|
* inspired by Mark Andrews.
|
||
|
* author:
|
||
|
* Paul Vixie, 1996.
|
||
|
*/
|
||
|
static int
|
||
|
inet_pton6 (const char *restrict src, unsigned char *restrict dst)
|
||
|
{
|
||
|
static const char xdigits[] = "0123456789abcdef";
|
||
|
unsigned char tmp[NS_IN6ADDRSZ], *tp, *endp, *colonp;
|
||
|
const char *curtok;
|
||
|
int ch, saw_xdigit;
|
||
|
unsigned val;
|
||
|
|
||
|
tp = memset (tmp, '\0', NS_IN6ADDRSZ);
|
||
|
endp = tp + NS_IN6ADDRSZ;
|
||
|
colonp = NULL;
|
||
|
/* Leading :: requires some special handling. */
|
||
|
if (*src == ':')
|
||
|
if (*++src != ':')
|
||
|
return (0);
|
||
|
curtok = src;
|
||
|
saw_xdigit = 0;
|
||
|
val = 0;
|
||
|
while ((ch = tolower (*src++)) != '\0')
|
||
|
{
|
||
|
const char *pch;
|
||
|
|
||
|
pch = strchr (xdigits, ch);
|
||
|
if (pch != NULL)
|
||
|
{
|
||
|
val <<= 4;
|
||
|
val |= (pch - xdigits);
|
||
|
if (val > 0xffff)
|
||
|
return (0);
|
||
|
saw_xdigit = 1;
|
||
|
continue;
|
||
|
}
|
||
|
if (ch == ':')
|
||
|
{
|
||
|
curtok = src;
|
||
|
if (!saw_xdigit)
|
||
|
{
|
||
|
if (colonp)
|
||
|
return (0);
|
||
|
colonp = tp;
|
||
|
continue;
|
||
|
}
|
||
|
else if (*src == '\0')
|
||
|
{
|
||
|
return (0);
|
||
|
}
|
||
|
if (tp + NS_INT16SZ > endp)
|
||
|
return (0);
|
||
|
*tp++ = (u_char) (val >> 8) & 0xff;
|
||
|
*tp++ = (u_char) val & 0xff;
|
||
|
saw_xdigit = 0;
|
||
|
val = 0;
|
||
|
continue;
|
||
|
}
|
||
|
if (ch == '.' && ((tp + NS_INADDRSZ) <= endp) &&
|
||
|
inet_pton4 (curtok, tp) > 0)
|
||
|
{
|
||
|
tp += NS_INADDRSZ;
|
||
|
saw_xdigit = 0;
|
||
|
break; /* '\0' was seen by inet_pton4(). */
|
||
|
}
|
||
|
return (0);
|
||
|
}
|
||
|
if (saw_xdigit)
|
||
|
{
|
||
|
if (tp + NS_INT16SZ > endp)
|
||
|
return (0);
|
||
|
*tp++ = (u_char) (val >> 8) & 0xff;
|
||
|
*tp++ = (u_char) val & 0xff;
|
||
|
}
|
||
|
if (colonp != NULL)
|
||
|
{
|
||
|
/*
|
||
|
* Since some memmove()'s erroneously fail to handle
|
||
|
* overlapping regions, we'll do the shift by hand.
|
||
|
*/
|
||
|
const int n = tp - colonp;
|
||
|
int i;
|
||
|
|
||
|
if (tp == endp)
|
||
|
return (0);
|
||
|
for (i = 1; i <= n; i++)
|
||
|
{
|
||
|
endp[-i] = colonp[n - i];
|
||
|
colonp[n - i] = 0;
|
||
|
}
|
||
|
tp = endp;
|
||
|
}
|
||
|
if (tp != endp)
|
||
|
return (0);
|
||
|
memcpy (dst, tmp, NS_IN6ADDRSZ);
|
||
|
return (1);
|
||
|
}
|
||
|
#endif
|