1/* $KAME: misc.c,v 1.23 2001/08/16 14:37:29 itojun 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 "config.h" 33 34#include <sys/types.h> 35#include <sys/param.h> 36#include <sys/stat.h> 37#include <sys/time.h> 38 39#include <stdlib.h> 40#include <stdio.h> 41#include <string.h> 42#include <errno.h> 43#include <syslog.h> 44#include <ctype.h> 45 46#include "var.h" 47#include "misc.h" 48#include "debug.h" 49 50#if 0 51static int bindump (void *, size_t); 52 53static int 54bindump(buf0, len) 55 void *buf0; 56 size_t len; 57{ 58 unsigned char *buf = (unsigned char *)buf0; 59 size_t i; 60 61 for (i = 0; i < len; i++) { 62 if ((buf[i] & 0x80) || !isprint(buf[i])) 63 printf("\\x%x", buf[i]); 64 else 65 printf("%c", buf[i]); 66 } 67 printf("\n"); 68 69 return 0; 70} 71#endif 72 73int 74hexdump(buf0, len) 75 void *buf0; 76 size_t len; 77{ 78 caddr_t buf = (caddr_t)buf0; 79 size_t i; 80 81 for (i = 0; i < len; i++) { 82 if (i != 0 && i % 32 == 0) 83 printf("\n"); 84 if (i % 4 == 0) 85 printf(" "); 86 printf("%02x", (unsigned char)buf[i]); 87 } 88 printf("\n"); 89 90 return 0; 91} 92 93char * 94bit2str(n, bl) 95 int n, bl; 96{ 97#define MAXBITLEN 128 98 static char b[MAXBITLEN + 1]; 99 int i; 100 101 if (bl > MAXBITLEN) 102 return "Failed to convert."; /* NG */ 103 memset(b, '0', bl); 104 b[bl] = '\0'; 105 106 for (i = 0; i < bl; i++) { 107 if (n & (1 << i)) 108 b[bl - 1 - i] = '1'; 109 } 110 111 return b; 112} 113 114const char * 115debug_location(file, line, func) 116 const char *file; 117 int line; 118 const char *func; 119{ 120 static char buf[1024]; 121 const char *p; 122 123 /* truncate pathname */ 124 p = strrchr(file, '/'); 125 if (p) 126 p++; 127 else 128 p = file; 129 130 if (func) 131 snprintf(buf, sizeof(buf), "%s:%d:%s()", p, line, func); 132 else 133 snprintf(buf, sizeof(buf), "%s:%d", p, line); 134 135 return buf; 136} 137 138/* 139 * get file size. 140 * -1: error occured. 141 */ 142int 143getfsize(path) 144 char *path; 145{ 146 struct stat st; 147 148 if (stat(path, &st) != 0) 149 return -1; 150 else 151 return st.st_size; 152} 153 154/* 155 * calculate the difference between two times. 156 * t1: start 157 * t2: end 158 */ 159double 160timedelta(t1, t2) 161 struct timeval *t1, *t2; 162{ 163 if (t2->tv_usec >= t1->tv_usec) 164 return t2->tv_sec - t1->tv_sec + 165 (double)(t2->tv_usec - t1->tv_usec) / 1000000; 166 167 return t2->tv_sec - t1->tv_sec - 1 + 168 (double)(1000000 + t2->tv_usec - t1->tv_usec) / 1000000; 169} 170 171/* 172 * Returns a printable string from (possibly) binary data ; 173 * concatenates all unprintable chars to one space. 174 * XXX Maybe the printable chars range is too large... 175 */ 176char* 177binsanitize(binstr, n) 178 char *binstr; 179 size_t n; 180{ 181 int p,q; 182 for (p = 0, q = 0; p < n; p++) { 183 if (isgraph((int)binstr[p])) { 184 binstr[q++] = binstr[p]; 185 } else { 186 if (q && binstr[q - 1] != ' ') 187 binstr[q++] = ' '; 188 } 189 } 190 binstr[q++] = '\0'; 191 return binstr; 192} 193