1 /* $NetBSD: print-ascii.c,v 1.1 1999/09/30 14:49:12 sjg Exp $ */
4 * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Alan Barrett and Simon J. Gerraty.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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.
39 #define NETDISSECT_REWORKED
44 #include <tcpdump-stdinc.h>
47 #include "interface.h"
49 #define ASCII_LINELENGTH 300
50 #define HEXDUMP_BYTES_PER_LINE 16
51 #define HEXDUMP_SHORTS_PER_LINE (HEXDUMP_BYTES_PER_LINE / 2)
52 #define HEXDUMP_HEXSTUFF_PER_SHORT 5 /* 4 hex digits and a space */
53 #define HEXDUMP_HEXSTUFF_PER_LINE \
54 (HEXDUMP_HEXSTUFF_PER_SHORT * HEXDUMP_SHORTS_PER_LINE)
57 ascii_print(netdissect_options *ndo,
58 const u_char *cp, u_int length)
62 ND_PRINT((ndo, "\n"));
68 * Don't print CRs at the end of the line; they
69 * don't belong at the ends of lines on UN*X,
70 * and the standard I/O library will give us one
71 * on Windows so we don't need to print one
74 * In the middle of a line, just print a '.'.
76 if (length > 1 && *cp != '\n')
80 (s != '\t' && s != ' ' && s != '\n'))
83 ND_PRINT((ndo, "%c", s));
89 hex_and_ascii_print_with_offset(netdissect_options *ndo, register const char *ident,
90 register const u_char *cp, register u_int length, register u_int oset)
95 char hexstuff[HEXDUMP_SHORTS_PER_LINE*HEXDUMP_HEXSTUFF_PER_SHORT+1], *hsp;
96 char asciistuff[ASCII_LINELENGTH+1], *asp;
98 nshorts = length / sizeof(u_short);
100 hsp = hexstuff; asp = asciistuff;
101 while (--nshorts >= 0) {
104 (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
105 " %02x%02x", s1, s2);
106 hsp += HEXDUMP_HEXSTUFF_PER_SHORT;
107 *(asp++) = (ND_ISGRAPH(s1) ? s1 : '.');
108 *(asp++) = (ND_ISGRAPH(s2) ? s2 : '.');
110 if (i >= HEXDUMP_SHORTS_PER_LINE) {
112 ND_PRINT((ndo, "%s0x%04x: %-*s %s",
113 ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
114 hexstuff, asciistuff));
115 i = 0; hsp = hexstuff; asp = asciistuff;
116 oset += HEXDUMP_BYTES_PER_LINE;
121 (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff),
124 *(asp++) = (ND_ISGRAPH(s1) ? s1 : '.');
129 ND_PRINT((ndo, "%s0x%04x: %-*s %s",
130 ident, oset, HEXDUMP_HEXSTUFF_PER_LINE,
131 hexstuff, asciistuff));
136 hex_and_ascii_print(netdissect_options *ndo, register const char *ident,
137 register const u_char *cp, register u_int length)
139 hex_and_ascii_print_with_offset(ndo, ident, cp, length, 0);
143 * telnet_print() wants this. It is essentially default_print_unaligned()
146 hex_print_with_offset(netdissect_options *ndo,
147 const char *ident, const u_char *cp, u_int length,
151 register int nshorts;
153 nshorts = (u_int) length / sizeof(u_short);
155 while (--nshorts >= 0) {
156 if ((i++ % 8) == 0) {
157 ND_PRINT((ndo,"%s0x%04x: ", ident, oset));
158 oset += HEXDUMP_BYTES_PER_LINE;
161 ND_PRINT((ndo," %02x%02x", s, *cp++));
165 ND_PRINT((ndo,"%s0x%04x: ", ident, oset));
166 ND_PRINT((ndo," %02x", *cp));
171 * just for completeness
174 hex_print(netdissect_options *ndo,const char *ident, const u_char *cp, u_int length)
176 hex_print_with_offset(ndo, ident, cp, length, 0);
181 main(int argc, char *argv[])
183 hex_print("\n\t", "Hello, World!\n", 14);
185 hex_and_ascii_print("\n\t", "Hello, World!\n", 14);
187 ascii_print("Hello, World!\n", 14);
189 #define TMSG "Now is the winter of our discontent...\n"
190 hex_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100);
192 hex_and_ascii_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100);