The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 |
| 44 | static const char rcsid[] _U_ = |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 45 | "@(#) $Header: /tcpdump/master/tcpdump/print-ascii.c,v 1.17 2005-07-06 20:53:32 guy Exp $"; |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 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 | |
| 59 | void |
| 60 | ascii_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--; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 68 | if (s == '\r') { |
| 69 | /* |
| 70 | * Don't print CRs at the end of the line; they |
| 71 | * don't belong at the ends of lines on UN*X, |
| 72 | * and the standard I/O library will give us one |
| 73 | * on Windows so we don't need to print one |
| 74 | * ourselves. |
| 75 | * |
| 76 | * In the middle of a line, just print a '.'. |
| 77 | */ |
| 78 | if (length > 1 && *cp != '\n') |
| 79 | putchar('.'); |
| 80 | } else { |
| 81 | if (!ND_ISGRAPH(s) && |
| 82 | (s != '\t' && s != ' ' && s != '\n')) |
| 83 | putchar('.'); |
| 84 | else |
| 85 | putchar(s); |
| 86 | } |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 87 | } |
| 88 | } |
| 89 | |
| 90 | void |
| 91 | hex_and_ascii_print_with_offset(register const char *ident, |
| 92 | register const u_char *cp, register u_int length, register u_int oset) |
| 93 | { |
| 94 | register u_int i; |
| 95 | register int s1, s2; |
| 96 | register int nshorts; |
| 97 | char hexstuff[HEXDUMP_SHORTS_PER_LINE*HEXDUMP_HEXSTUFF_PER_SHORT+1], *hsp; |
| 98 | char asciistuff[ASCII_LINELENGTH+1], *asp; |
| 99 | |
| 100 | nshorts = length / sizeof(u_short); |
| 101 | i = 0; |
| 102 | hsp = hexstuff; asp = asciistuff; |
| 103 | while (--nshorts >= 0) { |
| 104 | s1 = *cp++; |
| 105 | s2 = *cp++; |
| 106 | (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff), |
| 107 | " %02x%02x", s1, s2); |
| 108 | hsp += HEXDUMP_HEXSTUFF_PER_SHORT; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 109 | *(asp++) = (ND_ISGRAPH(s1) ? s1 : '.'); |
| 110 | *(asp++) = (ND_ISGRAPH(s2) ? s2 : '.'); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 111 | i++; |
| 112 | if (i >= HEXDUMP_SHORTS_PER_LINE) { |
| 113 | *hsp = *asp = '\0'; |
| 114 | (void)printf("%s0x%04x: %-*s %s", |
| 115 | ident, oset, HEXDUMP_HEXSTUFF_PER_LINE, |
| 116 | hexstuff, asciistuff); |
| 117 | i = 0; hsp = hexstuff; asp = asciistuff; |
| 118 | oset += HEXDUMP_BYTES_PER_LINE; |
| 119 | } |
| 120 | } |
| 121 | if (length & 1) { |
| 122 | s1 = *cp++; |
| 123 | (void)snprintf(hsp, sizeof(hexstuff) - (hsp - hexstuff), |
| 124 | " %02x", s1); |
| 125 | hsp += 3; |
JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 126 | *(asp++) = (ND_ISGRAPH(s1) ? s1 : '.'); |
The Android Open Source Project | 2949f58 | 2009-03-03 19:30:46 -0800 | [diff] [blame] | 127 | ++i; |
| 128 | } |
| 129 | if (i > 0) { |
| 130 | *hsp = *asp = '\0'; |
| 131 | (void)printf("%s0x%04x: %-*s %s", |
| 132 | ident, oset, HEXDUMP_HEXSTUFF_PER_LINE, |
| 133 | hexstuff, asciistuff); |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | void |
| 138 | hex_and_ascii_print(register const char *ident, register const u_char *cp, |
| 139 | register u_int length) |
| 140 | { |
| 141 | hex_and_ascii_print_with_offset(ident, cp, length, 0); |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * telnet_print() wants this. It is essentially default_print_unaligned() |
| 146 | */ |
| 147 | void |
| 148 | hex_print_with_offset(register const char *ident, register const u_char *cp, register u_int length, |
| 149 | register u_int oset) |
| 150 | { |
| 151 | register u_int i, s; |
| 152 | register int nshorts; |
| 153 | |
| 154 | nshorts = (u_int) length / sizeof(u_short); |
| 155 | i = 0; |
| 156 | while (--nshorts >= 0) { |
| 157 | if ((i++ % 8) == 0) { |
| 158 | (void)printf("%s0x%04x: ", ident, oset); |
| 159 | oset += HEXDUMP_BYTES_PER_LINE; |
| 160 | } |
| 161 | s = *cp++; |
| 162 | (void)printf(" %02x%02x", s, *cp++); |
| 163 | } |
| 164 | if (length & 1) { |
| 165 | if ((i % 8) == 0) |
| 166 | (void)printf("%s0x%04x: ", ident, oset); |
| 167 | (void)printf(" %02x", *cp); |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | /* |
| 172 | * just for completeness |
| 173 | */ |
| 174 | void |
| 175 | hex_print(register const char *ident, register const u_char *cp, register u_int length) |
| 176 | { |
| 177 | hex_print_with_offset(ident, cp, length, 0); |
| 178 | } |
| 179 | |
| 180 | #ifdef MAIN |
| 181 | int |
| 182 | main(int argc, char *argv[]) |
| 183 | { |
| 184 | hex_print("\n\t", "Hello, World!\n", 14); |
| 185 | printf("\n"); |
| 186 | hex_and_ascii_print("\n\t", "Hello, World!\n", 14); |
| 187 | printf("\n"); |
| 188 | ascii_print("Hello, World!\n", 14); |
| 189 | printf("\n"); |
| 190 | #define TMSG "Now is the winter of our discontent...\n" |
| 191 | hex_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100); |
| 192 | printf("\n"); |
| 193 | hex_and_ascii_print_with_offset("\n\t", TMSG, sizeof(TMSG) - 1, 0x100); |
| 194 | printf("\n"); |
| 195 | exit(0); |
| 196 | } |
| 197 | #endif /* MAIN */ |