1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/* $OpenBSD: encrypt.c,v 1.2 1996/08/08 04:37:02 downsj Exp $ */
/*
* Copyright (c) 1996, Jason Downs. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <stdio.h>
#include <sys/types.h>
#include <err.h>
#include <string.h>
#include <unistd.h>
/*
* Very simple little program, for encrypting passwords from the command
* line. Useful for scripts and such.
*/
extern char *__progname;
extern char *optarg;
extern int optind;
void usage()
{
errx(1, "usage: %s [-m] [-s salt] [string]", __progname);
}
char *trim(line)
char *line;
{
char *ptr;
for (ptr = &line[strlen(line)-1]; ptr > line; ptr--) {
if (!isspace(*ptr))
break;
}
ptr[1] = '\0';
for (ptr = line; *ptr && isspace(*ptr); ptr++);
return(ptr);
}
int main(argc, argv)
int argc;
char *argv[];
{
int opt;
int do_md5 = 0;
char *salt = (char *)NULL;
while ((opt = getopt(argc, argv, "ms:")) != -1) {
switch (opt) {
case 'm':
do_md5 = 1;
break;
case 's':
salt = optarg;
break;
default:
usage();
}
}
if (do_md5 && (salt != (char *)NULL))
usage();
if (!do_md5 && (salt == (char *)NULL))
usage();
if ((argc - optind) < 1) {
char line[BUFSIZ], *string;
/* Encrypt stdin to stdout. */
while (!feof(stdin) && (fgets(line, sizeof(line), stdin) != NULL)) {
/* Kill the whitesapce. */
string = trim(line);
if (*string == '\0')
continue;
fputs(crypt(string, (do_md5 ? "$1$" : salt)), stdout);
fputc('\n', stdout);
}
} else {
char *string;
/* Perhaps it isn't worth worrying about, but... */
string = strdup(argv[optind]);
if (string == (char *)NULL)
err(1, NULL);
/* Wipe the argument. */
bzero(argv[optind], strlen(argv[optind]));
fputs(crypt(string, (do_md5 ? "$1$" : salt)), stdout);
fputc('\n', stdout);
/* Wipe our copy, before we free it. */
bzero(string, strlen(string));
free(string);
}
exit(0);
}
|
