1/*  $NetBSD: debug.c,v 1.4 2011/08/30 20:17:00 joerg Exp $ */
2
3/*-
4 *  Copyright (c) 2010 Emmanuel Dreyfus. All rights reserved.
5 *
6 *  Redistribution and use in source and binary forms, with or without
7 *  modification, are permitted provided that the following conditions
8 *  are met:
9 *  1. Redistributions of source code must retain the above copyright
10 *     notice, this list of conditions and the following disclaimer.
11 *  2. Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 *
15 *  THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
16 *  ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 *  TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 *  PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
19 *  BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 *  POSSIBILITY OF SUCH DAMAGE.
26 */
27#include <stdio.h>
28#include <errno.h>
29#include <string.h>
30#include <syslog.h>
31#include <ctype.h>
32#include <sys/socket.h>
33
34#include "perfused.h"
35
36#ifdef PERFUSE_DEBUG
37void
38perfused_hexdump(const char *addr, size_t len)
39{
40	unsigned int i, j, k;
41
42	for (i = 0; i < len; i += 16) {
43		DPRINTF("%p  ", &addr[i]);
44		for (j = 0; j < 16; j += 4) {
45			for (k = 0; k < 4; k++) {
46				if (i + j + k < len) {
47					DPRINTF("%02x ",
48					       *(addr + i + j + k) & 0xff);
49				} else {
50					DPRINTF("   ");
51				}
52			}
53		}
54
55		DPRINTF("  ");
56		for (j = 0; j < 16; j++) {
57			char c;
58
59			if (i + j < len) {
60				c = *(addr + i + j);
61				DPRINTF("%c", isprint((int)c) ? c : '.');
62			} else {
63				DPRINTF(" ");
64			}
65		}
66		DPRINTF("\n");
67	}
68
69	return;
70}
71
72
73
74#endif /* PERFUSE_DEBUG */
75