156893Sfenner/* $NetBSD: print-ascii.c,v 1.1 1999/09/30 14:49:12 sjg Exp $ */ 256893Sfenner 356893Sfenner/*- 456893Sfenner * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. 556893Sfenner * All rights reserved. 656893Sfenner * 756893Sfenner * This code is derived from software contributed to The NetBSD Foundation 856893Sfenner * by Alan Barrett and Simon J. Gerraty. 956893Sfenner * 1056893Sfenner * Redistribution and use in source and binary forms, with or without 1156893Sfenner * modification, are permitted provided that the following conditions 1256893Sfenner * are met: 1356893Sfenner * 1. Redistributions of source code must retain the above copyright 1456893Sfenner * notice, this list of conditions and the following disclaimer. 1556893Sfenner * 2. Redistributions in binary form must reproduce the above copyright 1656893Sfenner * notice, this list of conditions and the following disclaimer in the 1756893Sfenner * documentation and/or other materials provided with the distribution. 1856893Sfenner * 3. All advertising materials mentioning features or use of this software 1956893Sfenner * must display the following acknowledgement: 2056893Sfenner * This product includes software developed by the NetBSD 2156893Sfenner * Foundation, Inc. and its contributors. 2256893Sfenner * 4. Neither the name of The NetBSD Foundation nor the names of its 2356893Sfenner * contributors may be used to endorse or promote products derived 2456893Sfenner * from this software without specific prior written permission. 2556893Sfenner * 2656893Sfenner * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 2756893Sfenner * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 2856893Sfenner * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 2956893Sfenner * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 3056893Sfenner * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 3156893Sfenner * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 3256893Sfenner * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 3356893Sfenner * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 3456893Sfenner * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 3556893Sfenner * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 3656893Sfenner * POSSIBILITY OF SUCH DAMAGE. 3756893Sfenner */ 3856893Sfenner 3956893Sfenner#ifdef HAVE_CONFIG_H 4056893Sfenner#include "config.h" 4156893Sfenner#endif 4256893Sfenner 4356893Sfenner#ifndef lint 44127668Sbmsstatic const char rcsid[] _U_ = 45190207Srpaulo "@(#) $Header: /tcpdump/master/tcpdump/print-ascii.c,v 1.17 2005-07-06 20:53:32 guy Exp $"; 4656893Sfenner#endif 47127668Sbms#include <tcpdump-stdinc.h> 4856893Sfenner#include <stdio.h> 4956893Sfenner 5056893Sfenner#include "interface.h" 5156893Sfenner 52127668Sbms#define ASCII_LINELENGTH 300 5356893Sfenner#define HEXDUMP_BYTES_PER_LINE 16 5456893Sfenner#define HEXDUMP_SHORTS_PER_LINE (HEXDUMP_BYTES_PER_LINE / 2) 5556893Sfenner#define HEXDUMP_HEXSTUFF_PER_SHORT 5 /* 4 hex digits and a space */ 5656893Sfenner#define HEXDUMP_HEXSTUFF_PER_LINE \ 5756893Sfenner (HEXDUMP_HEXSTUFF_PER_SHORT * HEXDUMP_SHORTS_PER_LINE) 58127668Sbms 5956893Sfennervoid 60162017Ssamascii_print(register const u_char *cp, register u_int length) 6156893Sfenner{ 62162017Ssam register int s; 63162017Ssam 64162017Ssam putchar('\n'); 65162017Ssam while (length > 0) { 66162017Ssam s = *cp++; 67162017Ssam length--; 68162017Ssam if (!isgraph(s) && 69162017Ssam (s != '\t' && s != ' ' && s != '\n' && s != '\r')) 70162017Ssam putchar('.'); 71162017Ssam else 72162017Ssam putchar(s); 73162017Ssam } 74162017Ssam} 75162017Ssam 76162017Ssamvoid 77162017Ssamhex_and_ascii_print_with_offset(register const char *ident, 78162017Ssam register const u_char *cp, register u_int length, register u_int oset) 79162017Ssam{ 8056893Sfenner register u_int i; 8156893Sfenner register int s1, s2; 8256893Sfenner register int nshorts; 8356893Sfenner char hexstuff[HEXDUMP_SHORTS_PER_LINE*HEXDUMP_HEXSTUFF_PER_SHORT+1], *hsp; 84127668Sbms char asciistuff[ASCII_LINELENGTH+1], *asp; 8556893Sfenner 8656893Sfenner nshorts = length / sizeof(u_short); 8756893Sfenner i = 0; 8856893Sfenner hsp = hexstuff; asp = asciistuff; 8956893Sfenner while (--nshorts >= 0) { 9056893Sfenner s1 = *cp++; 9156893Sfenner s2 = *cp++; 92162017Ssam (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff), 93162017Ssam " %02x%02x", s1, s2); 94162017Ssam hsp += HEXDUMP_HEXSTUFF_PER_SHORT; 95162017Ssam *(asp++) = (isgraph(s1) ? s1 : '.'); 96162017Ssam *(asp++) = (isgraph(s2) ? s2 : '.'); 97162017Ssam i++; 98162017Ssam if (i >= HEXDUMP_SHORTS_PER_LINE) { 99127668Sbms *hsp = *asp = '\0'; 100162017Ssam (void)printf("%s0x%04x: %-*s %s", 101162017Ssam ident, oset, HEXDUMP_HEXSTUFF_PER_LINE, 102162017Ssam hexstuff, asciistuff); 103127668Sbms i = 0; hsp = hexstuff; asp = asciistuff; 104127668Sbms oset += HEXDUMP_BYTES_PER_LINE; 105127668Sbms } 10656893Sfenner } 10756893Sfenner if (length & 1) { 10856893Sfenner s1 = *cp++; 109162017Ssam (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff), 110162017Ssam " %02x", s1); 111162017Ssam hsp += 3; 112162017Ssam *(asp++) = (isgraph(s1) ? s1 : '.'); 11356893Sfenner ++i; 11456893Sfenner } 11556893Sfenner if (i > 0) { 11656893Sfenner *hsp = *asp = '\0'; 117162017Ssam (void)printf("%s0x%04x: %-*s %s", 118162017Ssam ident, oset, HEXDUMP_HEXSTUFF_PER_LINE, 119162017Ssam hexstuff, asciistuff); 12056893Sfenner } 12156893Sfenner} 12256893Sfenner 12356893Sfennervoid 124162017Ssamhex_and_ascii_print(register const char *ident, register const u_char *cp, 125162017Ssam register u_int length) 12656893Sfenner{ 127162017Ssam hex_and_ascii_print_with_offset(ident, cp, length, 0); 12856893Sfenner} 129127668Sbms 13056893Sfenner/* 13156893Sfenner * telnet_print() wants this. It is essentially default_print_unaligned() 13256893Sfenner */ 13356893Sfennervoid 134146773Ssamhex_print_with_offset(register const char *ident, register const u_char *cp, register u_int length, 13556893Sfenner register u_int oset) 13656893Sfenner{ 13756893Sfenner register u_int i, s; 13856893Sfenner register int nshorts; 13956893Sfenner 14056893Sfenner nshorts = (u_int) length / sizeof(u_short); 14156893Sfenner i = 0; 14256893Sfenner while (--nshorts >= 0) { 14356893Sfenner if ((i++ % 8) == 0) { 144127668Sbms (void)printf("%s0x%04x: ", ident, oset); 14556893Sfenner oset += HEXDUMP_BYTES_PER_LINE; 14656893Sfenner } 14756893Sfenner s = *cp++; 14856893Sfenner (void)printf(" %02x%02x", s, *cp++); 14956893Sfenner } 15056893Sfenner if (length & 1) { 15156893Sfenner if ((i % 8) == 0) 152127668Sbms (void)printf("%s0x%04x: ", ident, oset); 15356893Sfenner (void)printf(" %02x", *cp); 15456893Sfenner } 15556893Sfenner} 15656893Sfenner 15756893Sfenner/* 15856893Sfenner * just for completeness 15956893Sfenner */ 16056893Sfennervoid 161146773Ssamhex_print(register const char *ident, register const u_char *cp, register u_int length) 16256893Sfenner{ 163127668Sbms hex_print_with_offset(ident, cp, length, 0); 16456893Sfenner} 16556893Sfenner 16656893Sfenner#ifdef MAIN 16756893Sfennerint 16856893Sfennermain(int argc, char *argv[]) 16956893Sfenner{ 170162017Ssam hex_print("\n\t", "Hello, World!\n", 14); 17156893Sfenner printf("\n"); 172162017Ssam hex_and_ascii_print("\n\t", "Hello, World!\n", 14); 173162017Ssam printf("\n"); 17456893Sfenner ascii_print("Hello, World!\n", 14); 17556893Sfenner printf("\n"); 17656893Sfenner#define TMSG "Now is the winter of our discontent...\n" 177162017Ssam hex_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100); 17856893Sfenner printf("\n"); 179162017Ssam hex_and_ascii_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100); 180162017Ssam printf("\n"); 18156893Sfenner exit(0); 18256893Sfenner} 18356893Sfenner#endif /* MAIN */ 184