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/* $OpenBSD: addr.c,v 1.2 1997/03/12 11:32:30 downsj Exp $ */
#if !defined(lint) && !defined(SABER)
#if 0
static char rcsid[] = "$From: addr.c,v 8.4 1996/05/23 08:21:28 vixie Exp $";
#else
static char rcsid[] = "$OpenBSD: addr.c,v 1.2 1997/03/12 11:32:30 downsj Exp $";
#endif
#endif /* not lint */
/* Copyright (c) 1996 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 <sys/param.h>
#include <sys/file.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/nameser.h>
#include <arpa/inet.h>
#include <string.h>
#include <stdio.h>
#include <ctype.h>
#include "../conf/portability.h"
extern char *optarg;
extern int optind;
extern int opterr;
extern int optopt;
static const char *prog = "addr";
#define BIGGEST_ADDRESS IN6ADDRSZ
static void
usage() {
fprintf(stderr,
"usage: %s [-4] [-6] [-n hexstring] [-p address]\n",
prog);
exit(1);
}
/* Warning: this scribbles on `dst' even if it's going to return `0'. */
static int
hexstring(src, dst, len)
const char *src;
u_char *dst;
int len;
{
static const char xdigits[] = "0123456789abcdef";
u_char *ptr = dst, *end = dst + len;
u_int val;
int ch, digits;
val = 0;
digits = 0;
bzero((void*)dst, len);
while ((ch = *src++) != '\0') {
if (ch == '0' && (*src == 'x' || *src == 'X')) {
src++;
continue;
}
if (isascii(ch) && (isspace(ch) || ispunct(ch))) {
if (digits > 0) {
if (ptr == end)
return (0);
*ptr++ = (u_char) (val & 0xff);
val = 0;
digits = 0;
}
digits = 0;
continue;
}
if (!isascii(ch) || !isxdigit(ch))
return (0);
if (isupper(ch))
ch = tolower(ch);
/* Clock it in using little endian arithmetic. */
val <<= 4;
val |= (strchr(xdigits, ch) - xdigits);
if (++digits == 2) {
if (ptr == end)
return (0);
*ptr++ = (u_char) (val & 0xff);
digits = 0;
val = 0;
}
}
if (digits > 0) {
if (ptr == end)
return (0);
*ptr++ = (u_char) (val & 0xff);
}
return ((ptr - dst) == len);
}
static void
display(input, af, addr, len)
const char *input;
int af;
const u_char *addr;
int len;
{
static int before = 0;
char p[sizeof "xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255"];
int i;
if (before)
putchar('\n');
else
before++;
printf("Input: \"%s\"\n", input);
printf("Network: [af%d len%d]", af, len);
for (i = 0; i < len; i++)
printf(" %02x", addr[i]);
putchar('\n');
printf("Presentation: \"%s\"\n", inet_ntop(af, addr, p, sizeof p));
}
int
main(argc, argv)
int argc;
char *argv[];
{
u_char addr[BIGGEST_ADDRESS];
int optchr, af, len;
prog = argv[0];
af = AF_INET;
len = INADDRSZ;
while ((optchr = getopt(argc, argv, "46n:p:")) != -1) {
switch (optchr) {
case '4':
af = AF_INET;
len = INADDRSZ;
break;
case '6':
af = AF_INET6;
len = IN6ADDRSZ;
break;
case 'n':
if (!hexstring(optarg, addr, len)) {
fprintf(stderr, "bad hex string: \"%s\"\n",
optarg);
usage();
/* NOTREACHED */
}
display(optarg, af, addr, len);
break;
case 'p':
if (inet_pton(af, optarg, addr) <= 0) {
fprintf(stderr, "bad address: \"%s\"\n",
optarg);
usage();
/* NOTREACHED */
}
display(optarg, af, addr, len);
break;
default:
usage();
/* NOTREACHED */
}
}
exit(0);
/* NOTREACHED */
}
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