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
racoon_hexdump(void * buf0,size_t len)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 *
bit2str(int n,int bl)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 *
debug_location(const char * file,int line,const char * func)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
getfsize(char * path)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
close_on_exec(int fd)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
timedelta(struct timeval * t1,struct timeval * t2)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