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      1 /*	$NetBSD: misc.c,v 1.4.6.1 2008/07/15 00:55:48 mgrooms Exp $	*/
      2 
      3 /*	$KAME: misc.c,v 1.23 2001/08/16 14:37:29 itojun Exp $	*/
      4 
      5 /*
      6  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
      7  * All rights reserved.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. Neither the name of the project nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  */
     33 
     34 #include "config.h"
     35 
     36 #include <sys/types.h>
     37 #include <sys/param.h>
     38 #include <sys/stat.h>
     39 #include <sys/time.h>
     40 
     41 #include <stdlib.h>
     42 #include <stdio.h>
     43 #include <string.h>
     44 #include <errno.h>
     45 #include <syslog.h>
     46 #include <ctype.h>
     47 
     48 #include "var.h"
     49 #include "misc.h"
     50 #include "debug.h"
     51 
     52 #if 0
     53 static int bindump __P((void *, size_t));
     54 
     55 static int
     56 bindump(buf0, len)
     57         void *buf0;
     58         size_t len;
     59 {
     60 	unsigned char *buf = (unsigned char *)buf0;
     61 	size_t i;
     62 
     63 	for (i = 0; i < len; i++) {
     64 		if ((buf[i] & 0x80) || !isprint(buf[i]))
     65 			printf("\\x%x", buf[i]);
     66 		else
     67 			printf("%c", buf[i]);
     68 	}
     69 	printf("\n");
     70 
     71 	return 0;
     72 }
     73 #endif
     74 
     75 int
     76 racoon_hexdump(buf0, len)
     77 	void *buf0;
     78 	size_t len;
     79 {
     80 	caddr_t buf = (caddr_t)buf0;
     81 	size_t i;
     82 
     83 	for (i = 0; i < len; i++) {
     84 		if (i != 0 && i % 32 == 0)
     85 			printf("\n");
     86 		if (i % 4 == 0)
     87 			printf(" ");
     88 		printf("%02x", (unsigned char)buf[i]);
     89 	}
     90 	printf("\n");
     91 
     92 	return 0;
     93 }
     94 
     95 char *
     96 bit2str(n, bl)
     97 	int n, bl;
     98 {
     99 #define MAXBITLEN 128
    100 	static char b[MAXBITLEN + 1];
    101 	int i;
    102 
    103 	if (bl > MAXBITLEN)
    104 		return "Failed to convert.";	/* NG */
    105 	memset(b, '0', bl);
    106 	b[bl] = '\0';
    107 
    108 	for (i = 0; i < bl; i++) {
    109 		if (n & (1 << i))
    110 			b[bl - 1 - i] = '1';
    111 	}
    112 
    113 	return b;
    114 }
    115 
    116 const char *
    117 debug_location(file, line, func)
    118 	const char *file;
    119 	int line;
    120 	const char *func;
    121 {
    122 	static char buf[1024];
    123 	const char *p;
    124 
    125 	/* truncate pathname */
    126 	p = strrchr(file, '/');
    127 	if (p)
    128 		p++;
    129 	else
    130 		p = file;
    131 
    132 	if (func)
    133 		snprintf(buf, sizeof(buf), "%s:%d:%s()", p, line, func);
    134 	else
    135 		snprintf(buf, sizeof(buf), "%s:%d", p, line);
    136 
    137 	return buf;
    138 }
    139 
    140 /*
    141  * get file size.
    142  * -1: error occured.
    143  */
    144 int
    145 getfsize(path)
    146 	char *path;
    147 {
    148         struct stat st;
    149 
    150         if (stat(path, &st) != 0)
    151                 return -1;
    152         else
    153                 return st.st_size;
    154 }
    155 
    156 /*
    157  * calculate the difference between two times.
    158  * t1: start
    159  * t2: end
    160  */
    161 double
    162 timedelta(t1, t2)
    163 	struct timeval *t1, *t2;
    164 {
    165 	if (t2->tv_usec >= t1->tv_usec)
    166 		return t2->tv_sec - t1->tv_sec +
    167 			(double)(t2->tv_usec - t1->tv_usec) / 1000000;
    168 
    169 	return t2->tv_sec - t1->tv_sec - 1 +
    170 		(double)(1000000 + t2->tv_usec - t1->tv_usec) / 1000000;
    171 }
    172