159 lines
4.7 KiB
C
159 lines
4.7 KiB
C
/* $NetBSD: print-ascii.c,v 1.1 1999/09/30 14:49:12 sjg Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Alan Barrett and Simon J. Gerraty.
|
|
*
|
|
* 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#ifndef lint
|
|
static const char rcsid[] =
|
|
"@(#) $Header: /tcpdump/master/tcpdump/print-ascii.c,v 1.2.2.2 2000/01/11 06:58:23 fenner Exp $";
|
|
#endif
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <ctype.h>
|
|
|
|
#include "interface.h"
|
|
|
|
#define HEXDUMP_BYTES_PER_LINE 16
|
|
#define HEXDUMP_SHORTS_PER_LINE (HEXDUMP_BYTES_PER_LINE / 2)
|
|
#define HEXDUMP_HEXSTUFF_PER_SHORT 5 /* 4 hex digits and a space */
|
|
#define HEXDUMP_HEXSTUFF_PER_LINE \
|
|
(HEXDUMP_HEXSTUFF_PER_SHORT * HEXDUMP_SHORTS_PER_LINE)
|
|
|
|
void
|
|
ascii_print_with_offset(register const u_char *cp, register u_int length,
|
|
register u_int oset)
|
|
{
|
|
register u_int i;
|
|
register int s1, s2;
|
|
register int nshorts;
|
|
char hexstuff[HEXDUMP_SHORTS_PER_LINE*HEXDUMP_HEXSTUFF_PER_SHORT+1], *hsp;
|
|
char asciistuff[HEXDUMP_BYTES_PER_LINE+1], *asp;
|
|
|
|
nshorts = length / sizeof(u_short);
|
|
i = 0;
|
|
hsp = hexstuff; asp = asciistuff;
|
|
while (--nshorts >= 0) {
|
|
s1 = *cp++;
|
|
s2 = *cp++;
|
|
(void)sprintf(hsp, " %02x%02x", s1, s2);
|
|
hsp += HEXDUMP_HEXSTUFF_PER_SHORT;
|
|
*(asp++) = (isgraph(s1) ? s1 : '.');
|
|
*(asp++) = (isgraph(s2) ? s2 : '.');
|
|
if (++i >= HEXDUMP_SHORTS_PER_LINE) {
|
|
*hsp = *asp = '\0';
|
|
(void)printf("\n0x%04x\t%-*s\t%s",
|
|
oset, HEXDUMP_HEXSTUFF_PER_LINE,
|
|
hexstuff, asciistuff);
|
|
i = 0; hsp = hexstuff; asp = asciistuff;
|
|
oset += HEXDUMP_BYTES_PER_LINE;
|
|
}
|
|
}
|
|
if (length & 1) {
|
|
s1 = *cp++;
|
|
(void)sprintf(hsp, " %02x", s1);
|
|
hsp += 3;
|
|
*(asp++) = (isgraph(s1) ? s1 : '.');
|
|
++i;
|
|
}
|
|
if (i > 0) {
|
|
*hsp = *asp = '\0';
|
|
(void)printf("\n0x%04x\t%-*s\t%s",
|
|
oset, HEXDUMP_HEXSTUFF_PER_LINE,
|
|
hexstuff, asciistuff);
|
|
}
|
|
}
|
|
|
|
void
|
|
ascii_print(register const u_char *cp, register u_int length)
|
|
{
|
|
ascii_print_with_offset(cp, length, 0);
|
|
}
|
|
|
|
/*
|
|
* telnet_print() wants this. It is essentially default_print_unaligned()
|
|
*/
|
|
void
|
|
hex_print_with_offset(register const u_char *cp, register u_int length,
|
|
register u_int oset)
|
|
{
|
|
register u_int i, s;
|
|
register int nshorts;
|
|
|
|
nshorts = (u_int) length / sizeof(u_short);
|
|
i = 0;
|
|
while (--nshorts >= 0) {
|
|
if ((i++ % 8) == 0) {
|
|
(void)printf("\n0x%04x\t", oset);
|
|
oset += HEXDUMP_BYTES_PER_LINE;
|
|
}
|
|
s = *cp++;
|
|
(void)printf(" %02x%02x", s, *cp++);
|
|
}
|
|
if (length & 1) {
|
|
if ((i % 8) == 0)
|
|
(void)printf("\n0x%04x\t", oset);
|
|
(void)printf(" %02x", *cp);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* just for completeness
|
|
*/
|
|
void
|
|
hex_print(register const u_char *cp, register u_int length)
|
|
{
|
|
hex_print_with_offset(cp, length, 0);
|
|
}
|
|
|
|
#ifdef MAIN
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
hex_print("Hello, World!\n", 14);
|
|
printf("\n");
|
|
ascii_print("Hello, World!\n", 14);
|
|
printf("\n");
|
|
#define TMSG "Now is the winter of our discontent...\n"
|
|
ascii_print_with_offset(TMSG, sizeof(TMSG) - 1, 0x100);
|
|
printf("\n");
|
|
exit(0);
|
|
}
|
|
#endif /* MAIN */
|