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 46 void 47 hexdump(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