racoon.tproj/misc.c

   1 /*      $KAME: misc.c,v 1.22 2001/07/14 05:48:33 sakane Exp $   */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/types.h>
  33 #include <sys/param.h>
  34 #include <sys/stat.h>
  35 #include <sys/time.h>
  36
  37 #include <stdlib.h>
  38 #include <stdio.h>
  39 #include <string.h>
  40 #include <errno.h>
  41 #include <syslog.h>
  42 #include <ctype.h>
  43
  44 #include "var.h"
  45 #include "misc.h"
  46 #include "debug.h"
  47
  48 #if 0
  49 static int bindump __P((void *, size_t));
  50
  51 static int
  52 bindump(buf0, len)
  53         void *buf0;
  54         size_t len;
  55 {
  56         unsigned char *buf = (unsigned char *)buf0;
  57         size_t i;
  58
  59         for (i = 0; i < len; i++) {
  60                 if ((buf[i] & 0x80) || !isprint(buf[i]))
  61                         printf("\\x%x", buf[i]);
  62                 else
  63                         printf("%c", buf[i]);
  64         }
  65         printf("\n");
  66
  67         return 0;
  68 }
  69 #endif
  70
  71 int
  72 hexdump(buf0, len)
  73         void *buf0;
  74         size_t len;
  75 {
  76         caddr_t buf = (caddr_t)buf0;
  77         size_t i;
  78
  79         for (i = 0; i < len; i++) {
  80                 if (i != 0 && i % 32 == 0)
  81                         printf("\n");
  82                 if (i % 4 == 0)
  83                         printf(" ");
  84                 printf("%02x", (unsigned char)buf[i]);
  85         }
  86         printf("\n");
  87
  88         return 0;
  89 }
  90
  91 char *
  92 bit2str(n, bl)
  93         int n, bl;
  94 {
  95 #define MAXBITLEN 128
  96         static char b[MAXBITLEN + 1];
  97         int i;
  98
  99         if (bl > MAXBITLEN)
 100                 return "Failed to convert.";    /* NG */
 101         memset(b, '0', bl);
 102         b[bl] = '\0';
 103
 104         for (i = 0; i < bl; i++) {
 105                 if (n & (1 << i))
 106                         b[bl - 1 - i] = '1';
 107         }
 108
 109         return b;
 110 }
 111
 112 const char *
 113 debug_location(file, line, func)
 114         const char *file;
 115         int line;
 116         const char *func;
 117 {
 118         static char buf[1024];
 119         const char *p;
 120
 121         /* truncate pathname */
 122         p = strrchr(file, '/');
 123         if (p)
 124                 p++;
 125         else
 126                 p = file;
 127
 128         if (func)
 129                 snprintf(buf, sizeof(buf), "%s:%d:%s()", p, line, func);
 130         else
 131                 snprintf(buf, sizeof(buf), "%s:%d", p, line);
 132
 133         return buf;
 134 }
 135
 136 /*
 137  * get file size.
 138  * -1: error occured.
 139  */
 140 int
 141 getfsize(path)
 142         char *path;
 143 {
 144         struct stat st;
 145
 146         if (stat(path, &st) != 0)
 147                 return -1;
 148         else
 149                 return st.st_size;
 150 }
 151
 152 /*
 153  * calculate the difference between two times.
 154  * t1: start
 155  * t2: end
 156  */
 157 double
 158 timedelta(t1, t2)
 159         struct timeval *t1, *t2;
 160 {
 161         if (t2->tv_usec >= t1->tv_usec)
 162                 return t2->tv_sec - t1->tv_sec +
 163                         (double)(t2->tv_usec - t1->tv_usec) / 1000000;
 164
 165         return t2->tv_sec - t1->tv_sec - 1 +
 166                 (double)(1000000 + t2->tv_usec - t1->tv_usec) / 1000000;
 167 }