1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1986, 1988, 1991, 1993
5 *	The Regents of the University of California.  All rights reserved.
6 * (c) UNIX System Laboratories, Inc.
7 * All or some portions of this file are derived from material licensed
8 * to the University of California by American Telephone and Telegraph
9 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
10 * the permission of UNIX System Laboratories, Inc.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 *	@(#)subr_prf.c	8.3 (Berkeley) 1/21/94
37 */
38
39#include <sys/cdefs.h>
40__FBSDID("$FreeBSD$");
41
42#include <sys/types.h>
43#include <libutil.h>
44#include <stdio.h>
45
46void
47hexdump(const void *ptr, int length, const char *hdr, int flags)
48{
49	int i, j, k;
50	int cols;
51	const unsigned char *cp;
52	char delim;
53
54	if ((flags & HD_DELIM_MASK) != 0)
55		delim = (flags & HD_DELIM_MASK) >> 8;
56	else
57		delim = ' ';
58
59	if ((flags & HD_COLUMN_MASK) != 0)
60		cols = flags & HD_COLUMN_MASK;
61	else
62		cols = 16;
63
64	cp = ptr;
65	for (i = 0; i < length; i+= cols) {
66		if (hdr != NULL)
67			printf("%s", hdr);
68
69		if ((flags & HD_OMIT_COUNT) == 0)
70			printf("%04x  ", i);
71
72		if ((flags & HD_OMIT_HEX) == 0) {
73			for (j = 0; j < cols; j++) {
74				k = i + j;
75				if (k < length)
76					printf("%c%02x", delim, cp[k]);
77				else
78					printf("   ");
79			}
80		}
81
82		if ((flags & HD_OMIT_CHARS) == 0) {
83			printf("  |");
84			for (j = 0; j < cols; j++) {
85				k = i + j;
86				if (k >= length)
87					printf(" ");
88				else if (cp[k] >= ' ' && cp[k] <= '~')
89					printf("%c", cp[k]);
90				else
91					printf(".");
92			}
93			printf("|");
94		}
95		printf("\n");
96	}
97}
98
99