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      1 /*  $NetBSD: debug.c,v 1.5 2012/01/30 22:49:03 christos 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
     37 void
     38 perfused_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