1 /* $NetBSD: misc.c,v 1.7 2018/05/19 20:40:40 maxv 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 #include <fcntl.h> 48 49 #include "var.h" 50 #include "misc.h" 51 #include "debug.h" 52 53 int 54 racoon_hexdump(void *buf0, size_t len) 55 { 56 caddr_t buf = (caddr_t)buf0; 57 size_t i; 58 59 for (i = 0; i < len; i++) { 60 if (i != 0 && i % 32 == 0) 61 printf("\n"); 62 if (i % 4 == 0) 63 printf(" "); 64 printf("%02x", (unsigned char)buf[i]); 65 } 66 printf("\n"); 67 68 return 0; 69 } 70 71 char * 72 bit2str(int n, int bl) 73 { 74 #define MAXBITLEN 128 75 static char b[MAXBITLEN + 1]; 76 int i; 77 78 if (bl > MAXBITLEN) 79 return "Failed to convert."; /* NG */ 80 memset(b, '0', bl); 81 b[bl] = '\0'; 82 83 for (i = 0; i < bl; i++) { 84 if (n & (1 << i)) 85 b[bl - 1 - i] = '1'; 86 } 87 88 return b; 89 } 90 91 const char * 92 debug_location(const char *file, int line, const char *func) 93 { 94 static char buf[1024]; 95 const char *p; 96 97 /* truncate pathname */ 98 p = strrchr(file, '/'); 99 if (p) 100 p++; 101 else 102 p = file; 103 104 if (func) 105 snprintf(buf, sizeof(buf), "%s:%d:%s()", p, line, func); 106 else 107 snprintf(buf, sizeof(buf), "%s:%d", p, line); 108 109 return buf; 110 } 111 112 /* 113 * get file size. 114 * -1: error occured. 115 */ 116 int 117 getfsize(char *path) 118 { 119 struct stat st; 120 121 if (stat(path, &st) != 0) 122 return -1; 123 else 124 return st.st_size; 125 } 126 127 /* 128 * set the close-on-exec flag for file descriptor fd. 129 */ 130 void 131 close_on_exec(int fd) 132 { 133 fcntl(fd, F_SETFD, FD_CLOEXEC); 134 } 135 136 /* 137 * calculate the difference between two times. 138 * t1: start 139 * t2: end 140 */ 141 double 142 timedelta(struct timeval *t1, struct timeval *t2) 143 { 144 if (t2->tv_usec >= t1->tv_usec) 145 return t2->tv_sec - t1->tv_sec + 146 (double)(t2->tv_usec - t1->tv_usec) / 1000000; 147 148 return t2->tv_sec - t1->tv_sec - 1 + 149 (double)(1000000 + t2->tv_usec - t1->tv_usec) / 1000000; 150 } 151