Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / print-ascii.c
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c8cf0f94
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1/* $NetBSD: print-ascii.c,v 1.1 1999/09/30 14:49:12 sjg Exp $ */
2
3/*-
4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Alan Barrett and Simon J. Gerraty.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39#ifdef HAVE_CONFIG_H
40#include "config.h"
41#endif
42
43#ifndef lint
44static const char rcsid[] _U_ =
45 "@(#) $Header: /tcpdump/master/tcpdump/print-ascii.c,v 1.16.2.1 2005/07/06 20:54:49 guy Exp $";
46#endif
47#include <tcpdump-stdinc.h>
48#include <stdio.h>
49
50#include "interface.h"
51
52#define ASCII_LINELENGTH 300
53#define HEXDUMP_BYTES_PER_LINE 16
54#define HEXDUMP_SHORTS_PER_LINE (HEXDUMP_BYTES_PER_LINE / 2)
55#define HEXDUMP_HEXSTUFF_PER_SHORT 5 /* 4 hex digits and a space */
56#define HEXDUMP_HEXSTUFF_PER_LINE \
57 (HEXDUMP_HEXSTUFF_PER_SHORT * HEXDUMP_SHORTS_PER_LINE)
58
59void
60ascii_print(register const u_char *cp, register u_int length)
61{
62 register int s;
63
64 putchar('\n');
65 while (length > 0) {
66 s = *cp++;
67 length--;
68 if (!isgraph(s) &&
69 (s != '\t' && s != ' ' && s != '\n' && s != '\r'))
70 putchar('.');
71 else
72 putchar(s);
73 }
74}
75
76void
77hex_and_ascii_print_with_offset(register const char *ident,
78 register const u_char *cp, register u_int length, register u_int oset)
79{
80 register u_int i;
81 register int s1, s2;
82 register int nshorts;
83 char hexstuff[HEXDUMP_SHORTS_PER_LINE*HEXDUMP_HEXSTUFF_PER_SHORT+1], *hsp;
84 char asciistuff[ASCII_LINELENGTH+1], *asp;
85
86 nshorts = length / sizeof(u_short);
87 i = 0;
88 hsp = hexstuff; asp = asciistuff;
89 while (--nshorts >= 0) {
90 s1 = *cp++;
91 s2 = *cp++;
92 (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
93 " %02x%02x", s1, s2);
94 hsp += HEXDUMP_HEXSTUFF_PER_SHORT;
95 *(asp++) = (isgraph(s1) ? s1 : '.');
96 *(asp++) = (isgraph(s2) ? s2 : '.');
97 i++;
98 if (i >= HEXDUMP_SHORTS_PER_LINE) {
99 *hsp = *asp = '\0';
100 (void)printf("%s0x%04x: %-*s %s",
101 ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
102 hexstuff, asciistuff);
103 i = 0; hsp = hexstuff; asp = asciistuff;
104 oset += HEXDUMP_BYTES_PER_LINE;
105 }
106 }
107 if (length & 1) {
108 s1 = *cp++;
109 (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
110 " %02x", s1);
111 hsp += 3;
112 *(asp++) = (isgraph(s1) ? s1 : '.');
113 ++i;
114 }
115 if (i > 0) {
116 *hsp = *asp = '\0';
117 (void)printf("%s0x%04x: %-*s %s",
118 ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
119 hexstuff, asciistuff);
120 }
121}
122
123void
124hex_and_ascii_print(register const char *ident, register const u_char *cp,
125 register u_int length)
126{
127 hex_and_ascii_print_with_offset(ident, cp, length, 0);
128}
129
130/*
131 * telnet_print() wants this. It is essentially default_print_unaligned()
132 */
133void
134hex_print_with_offset(register const char *ident, register const u_char *cp, register u_int length,
135 register u_int oset)
136{
137 register u_int i, s;
138 register int nshorts;
139
140 nshorts = (u_int) length / sizeof(u_short);
141 i = 0;
142 while (--nshorts >= 0) {
143 if ((i++ % 8) == 0) {
144 (void)printf("%s0x%04x: ", ident, oset);
145 oset += HEXDUMP_BYTES_PER_LINE;
146 }
147 s = *cp++;
148 (void)printf(" %02x%02x", s, *cp++);
149 }
150 if (length & 1) {
151 if ((i % 8) == 0)
152 (void)printf("%s0x%04x: ", ident, oset);
153 (void)printf(" %02x", *cp);
154 }
155}
156
157/*
158 * just for completeness
159 */
160void
161hex_print(register const char *ident, register const u_char *cp, register u_int length)
162{
163 hex_print_with_offset(ident, cp, length, 0);
164}
165
166#ifdef MAIN
167int
168main(int argc, char *argv[])
169{
170 hex_print("\n\t", "Hello, World!\n", 14);
171 printf("\n");
172 hex_and_ascii_print("\n\t", "Hello, World!\n", 14);
173 printf("\n");
174 ascii_print("Hello, World!\n", 14);
175 printf("\n");
176#define TMSG "Now is the winter of our discontent...\n"
177 hex_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100);
178 printf("\n");
179 hex_and_ascii_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100);
180 printf("\n");
181 exit(0);
182}
183#endif /* MAIN */