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1 | /* |
2 | ** Copyright 2001-2002 Double Precision, Inc. See COPYING for |
3 | ** distribution information. |
4 | */ |
5 | |
6 | #if HAVE_CONFIG_H |
7 | #include "courier_auth_config.h" |
8 | #endif |
9 | #include <string.h> |
10 | #if HAVE_UNISTD_H |
11 | #include <unistd.h> |
12 | #endif |
13 | #include <stdlib.h> |
14 | #if HAVE_CRYPT_H |
15 | #include <crypt.h> |
16 | #endif |
17 | #include "auth.h" |
18 | #include <sys/time.h> |
19 | |
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20 | static const char rcsid[]="$Id: cryptpassword.c,v 1.9 2007/10/07 18:33:22 mrsam Exp $"; |
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21 | |
22 | #if HAVE_CRYPT |
23 | #if NEED_CRYPT_PROTOTYPE |
24 | extern char *crypt(const char *, const char *); |
25 | #endif |
26 | #endif |
27 | |
28 | #if HAVE_MD5LIB |
29 | #include "md5/md5.h" |
30 | #endif |
31 | |
32 | #if HAVE_SHA1LIB |
33 | #include "sha1/sha1.h" |
34 | #endif |
35 | |
36 | static const char crypt_salt[65]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789./"; |
37 | |
38 | static const char *crypt_hash(const char *pw) |
39 | { |
40 | struct timeval tv; |
41 | char salt[3]; |
42 | |
43 | gettimeofday(&tv, NULL); |
44 | |
45 | tv.tv_sec |= tv.tv_usec; |
46 | tv.tv_sec ^= getpid(); |
47 | |
48 | salt[0]=crypt_salt[ tv.tv_sec % 64 ]; |
49 | |
50 | tv.tv_sec /= 64; |
51 | |
52 | salt[1]=crypt_salt[ tv.tv_sec % 64 ]; |
53 | salt[2]=0; |
54 | |
55 | return (crypt(pw, salt)); |
56 | } |
57 | |
58 | #if HAVE_MD5LIB |
59 | static const char *crypt_md5_wrapper(const char *pw) |
60 | { |
61 | struct timeval tv; |
62 | char salt[10]; |
63 | int i; |
64 | |
65 | gettimeofday(&tv, NULL); |
66 | |
67 | tv.tv_sec |= tv.tv_usec; |
68 | tv.tv_sec ^= getpid(); |
69 | |
70 | strcpy(salt, "$1$"); |
71 | |
72 | for (i=3; i<8; i++) |
73 | { |
74 | salt[i]=crypt_salt[ tv.tv_sec % 64 ]; |
75 | tv.tv_sec /= 64; |
76 | } |
77 | |
78 | strcpy(salt+i, "$"); |
79 | |
80 | return (md5_crypt(pw, salt)); |
81 | } |
82 | #endif |
83 | |
84 | char *authcryptpasswd(const char *password, const char *encryption_hint) |
85 | { |
86 | const char *(*hash_func)(const char *)=0; |
87 | const char *pfix=0; |
88 | const char *p; |
89 | char *pp; |
90 | |
91 | #if HAVE_MD5LIB |
92 | |
93 | if (!encryption_hint || strncmp(encryption_hint, "$1$", 3) == 0) |
94 | { |
95 | pfix=""; |
96 | hash_func=crypt_md5_wrapper; |
97 | } |
98 | |
99 | if (!encryption_hint || strncasecmp(encryption_hint, "{MD5}", 5) == 0) |
100 | { |
101 | hash_func= &md5_hash_courier; |
102 | pfix="{MD5}"; |
103 | } |
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104 | |
105 | if (!encryption_hint || strncasecmp(encryption_hint, "{MD5RAW}", 5) |
106 | == 0) |
107 | { |
108 | hash_func= &md5_hash_raw; |
109 | pfix="{MD5RAW}"; |
110 | } |
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111 | #endif |
112 | |
113 | #if HAVE_SHA1LIB |
114 | if (!encryption_hint || strncasecmp(encryption_hint, "{SHA}", 5) == 0) |
115 | { |
116 | hash_func= &sha1_hash; |
117 | pfix="{SHA}"; |
118 | } |
119 | |
120 | if (!encryption_hint || |
121 | strncasecmp(encryption_hint, "{SHA256}", 8) == 0) |
122 | { |
123 | hash_func= &sha256_hash; |
124 | pfix="{SHA256}"; |
125 | } |
126 | #endif |
127 | |
128 | if (!hash_func) |
129 | { |
130 | hash_func= &crypt_hash; |
131 | pfix="{CRYPT}"; |
132 | } |
133 | |
134 | p= (*hash_func)(password); |
135 | if (!p || (pp=malloc(strlen(pfix)+strlen(p)+1)) == 0) |
136 | return (0); |
137 | |
138 | return (strcat(strcpy(pp, pfix), p)); |
139 | } |