crypt.c revision 65053 
1/*
2 * Copyright (c) 1999
3 *      Mark Murray.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY MARK MURRAY AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL MARK MURRAY OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/lib/libcrypt/crypt.c 65053 2000-08-24 17:51:16Z green $
27 *
28 */
29
30#if defined(LIBC_SCCS) && !defined(lint)
31static char rcsid[] = "$FreeBSD: head/lib/libcrypt/crypt.c 65053 2000-08-24 17:51:16Z green $";
32#endif /* LIBC_SCCS and not lint */
33
34#include <string.h>
35#include "crypt.h"
36
37static const struct {
38	const char *const name;
39	char *(*const func)(const char *, const char *);
40	const char *const magic;
41} crypt_types[] = {
42#ifdef NONEXPORTABLE_CRYPT
43	{
44		"des",
45		crypt_des,
46		NULL
47	},
48#endif
49	{
50		"md5",
51		crypt_md5,
52		"$1$"
53	},
54	{
55		NULL,
56		NULL
57	}
58};
59
60static int crypt_type = 0;
61
62const char *
63crypt_get_format(void) {
64
65	return (crypt_types[crypt_type].name);
66}
67
68int
69crypt_set_format(char *type) {
70	int i;
71
72	for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
73		if (strcmp(type, crypt_types[i].name) == 0) {
74			crypt_type = i;
75			return (1);
76		}
77	}
78	return (0);
79}
80
81char *
82crypt(char *passwd, char *salt)
83{
84	int i;
85
86	for (i = 0; i < sizeof(crypt_types) / sizeof(crypt_types[0]) - 1; i++) {
87		if (crypt_types[i].magic != NULL && strncmp(salt,
88		    crypt_types[i].magic, strlen(crypt_types[i].magic)) == 0)
89			return (crypt_types[i].func(passwd, salt));
90	}
91	return (crypt_types[crypt_type].func(passwd, salt));
92}
93