Given Jeremy's positive response, and a lack of one from tpot, I'll commit
[kai/samba.git] / source3 / libsmb / pwd_cache.c
1 /* 
2    Unix SMB/CIFS implementation.
3    Password cacheing.  obfuscation is planned
4    Copyright (C) Luke Kenneth Casson Leighton 1996-1998
5    
6    This program is free software; you can redistribute it and/or modify
7    it under the terms of the GNU General Public License as published by
8    the Free Software Foundation; either version 2 of the License, or
9    (at your option) any later version.
10    
11    This program is distributed in the hope that it will be useful,
12    but WITHOUT ANY WARRANTY; without even the implied warranty of
13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14    GNU General Public License for more details.
15    
16    You should have received a copy of the GNU General Public License
17    along with this program; if not, write to the Free Software
18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 */
20
21 #include "includes.h"
22
23 /****************************************************************************
24  Initialises a password structure.
25 ****************************************************************************/
26
27 static void pwd_init(struct pwd_info *pwd)
28 {
29         memset((char *)pwd->password  , '\0', sizeof(pwd->password  ));
30         memset((char *)pwd->smb_lm_pwd, '\0', sizeof(pwd->smb_lm_pwd));
31         memset((char *)pwd->smb_nt_pwd, '\0', sizeof(pwd->smb_nt_pwd));
32         memset((char *)pwd->smb_lm_owf, '\0', sizeof(pwd->smb_lm_owf));
33         memset((char *)pwd->smb_nt_owf, '\0', sizeof(pwd->smb_nt_owf));
34
35         pwd->null_pwd  = True; /* safest option... */
36         pwd->cleartext = False;
37         pwd->crypted   = False;
38 }
39
40 /****************************************************************************
41  Makes lm and nt hashed passwords.
42 ****************************************************************************/
43
44 static void pwd_make_lm_nt_16(struct pwd_info *pwd, char *clr)
45 {
46         pstring dos_passwd;
47
48         pwd_init(pwd);
49
50         push_ascii_pstring(dos_passwd, clr);
51
52         nt_lm_owf_gen(dos_passwd, pwd->smb_nt_pwd, pwd->smb_lm_pwd);
53         pwd->null_pwd  = False;
54         pwd->cleartext = False;
55         pwd->crypted = False;
56 }
57
58 /****************************************************************************
59  Stores a cleartext password.
60 ****************************************************************************/
61
62 void pwd_set_cleartext(struct pwd_info *pwd, char *clr)
63 {
64         pwd_init(pwd);
65         push_ascii_fstring(pwd->password, clr);
66         pwd->cleartext = True;
67         pwd->null_pwd  = False;
68         pwd->crypted   = False;
69         pwd_make_lm_nt_16(pwd, clr);
70 }
71
72 /****************************************************************************
73  Gets a cleartext password.
74 ****************************************************************************/
75
76 void pwd_get_cleartext(struct pwd_info *pwd, char *clr)
77 {
78         if (pwd->cleartext)
79                 fstrcpy(clr, pwd->password);
80         else
81                 clr[0] = 0;
82
83 }
84
85 /****************************************************************************
86  Gets lm and nt hashed passwords.
87 ****************************************************************************/
88
89 void pwd_get_lm_nt_16(struct pwd_info *pwd, uchar lm_pwd[16], uchar nt_pwd[16])
90 {
91         if (lm_pwd != NULL)
92                 memcpy(lm_pwd, pwd->smb_lm_pwd, 16);
93         if (nt_pwd != NULL)
94                 memcpy(nt_pwd, pwd->smb_nt_pwd, 16);
95 }
96
97 /****************************************************************************
98  Makes lm and nt OWF crypts.
99 ****************************************************************************/
100
101 void pwd_make_lm_nt_owf(struct pwd_info *pwd, uchar cryptkey[8])
102 {
103
104 #ifdef DEBUG_PASSWORD
105         DEBUG(100,("client cryptkey: "));
106         dump_data(100, (char *)cryptkey, 8);
107 #endif
108
109         SMBOWFencrypt(pwd->smb_nt_pwd, cryptkey, pwd->smb_nt_owf);
110
111 #ifdef DEBUG_PASSWORD
112         DEBUG(100,("nt_owf_passwd: "));
113         dump_data(100, (char *)pwd->smb_nt_owf, sizeof(pwd->smb_nt_owf));
114         DEBUG(100,("nt_sess_pwd: "));
115         dump_data(100, (char *)pwd->smb_nt_pwd, sizeof(pwd->smb_nt_pwd));
116 #endif
117
118         SMBOWFencrypt(pwd->smb_lm_pwd, cryptkey, pwd->smb_lm_owf);
119
120 #ifdef DEBUG_PASSWORD
121         DEBUG(100,("lm_owf_passwd: "));
122         dump_data(100, (char *)pwd->smb_lm_owf, sizeof(pwd->smb_lm_owf));
123         DEBUG(100,("lm_sess_pwd: "));
124         dump_data(100, (char *)pwd->smb_lm_pwd, sizeof(pwd->smb_lm_pwd));
125 #endif
126
127         pwd->crypted = True;
128 }
129
130 /****************************************************************************
131  Gets lm and nt crypts.
132 ****************************************************************************/
133
134 void pwd_get_lm_nt_owf(struct pwd_info *pwd, uchar lm_owf[24], uchar nt_owf[24])
135 {
136         if (lm_owf != NULL)
137                 memcpy(lm_owf, pwd->smb_lm_owf, 24);
138         if (nt_owf != NULL)
139                 memcpy(nt_owf, pwd->smb_nt_owf, 24);
140 }
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