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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
|
/*
Unix SMB/Netbios implementation.
Version 3.0.
Samba registry functions
Copyright (C) Andrew Tridgell 1992-1998
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* the Samba secrets database stores any generated, private information
such as the local SID and machine trust password */
#include "includes.h"
static TDB_CONTEXT *tdb;
/* open up the secrets database */
BOOL secrets_init(void)
{
pstring fname;
if (tdb) return True;
pstrcpy(fname, lp_private_dir());
pstrcat(fname,"/secrets.tdb");
tdb = tdb_open_log(fname, 0, 0, O_RDWR|O_CREAT, 0600);
if (!tdb) {
DEBUG(0,("Failed to open %s\n", fname));
return False;
}
return True;
}
/* read a entry from the secrets database - the caller must free the result
if size is non-null then the size of the entry is put in there
*/
void *secrets_fetch(char *key, size_t *size)
{
TDB_DATA kbuf, dbuf;
if (!tdb) return False;
kbuf.dptr = key;
kbuf.dsize = strlen(key);
dbuf = tdb_fetch(tdb, kbuf);
if (size) *size = dbuf.dsize;
return dbuf.dptr;
}
/* store a secrets entry
*/
BOOL secrets_store(char *key, void *data, size_t size)
{
TDB_DATA kbuf, dbuf;
if (!tdb) return False;
kbuf.dptr = key;
kbuf.dsize = strlen(key);
dbuf.dptr = data;
dbuf.dsize = size;
return tdb_store(tdb, kbuf, dbuf, TDB_REPLACE) == 0;
}
/* delete a secets database entry
*/
BOOL secrets_delete(char *key)
{
TDB_DATA kbuf;
if (!tdb) return False;
kbuf.dptr = key;
kbuf.dsize = strlen(key);
return tdb_delete(tdb, kbuf) == 0;
}
BOOL secrets_store_domain_sid(char *domain, DOM_SID *sid)
{
fstring key;
slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
return secrets_store(key, sid, sizeof(DOM_SID));
}
BOOL secrets_fetch_domain_sid(char *domain, DOM_SID *sid)
{
DOM_SID *dyn_sid;
fstring key;
size_t size;
slprintf(key, sizeof(key)-1, "%s/%s", SECRETS_DOMAIN_SID, domain);
dos_to_unix(key, True); /* Convert key to unix-codepage */
dyn_sid = (DOM_SID *)secrets_fetch(key, &size);
if (dyn_sid == NULL)
return False;
if (size != sizeof(DOM_SID))
{
free(dyn_sid);
return False;
}
*sid = *dyn_sid;
free(dyn_sid);
return True;
}
/************************************************************************
form a key for fetching a domain trust password
************************************************************************/
char *trust_keystr(char *domain)
{
static fstring keystr;
fstring dos_domain;
fstrcpy(dos_domain, domain);
unix_to_dos(dos_domain, True);
slprintf(keystr,sizeof(keystr)-1,"%s/%s",
SECRETS_MACHINE_ACCT_PASS, dos_domain);
return keystr;
}
/************************************************************************
Routine to get the trust account password for a domain.
The user of this function must have locked the trust password file.
************************************************************************/
BOOL secrets_fetch_trust_account_password(char *domain, uint8 ret_pwd[16],
time_t *pass_last_set_time)
{
struct machine_acct_pass *pass;
size_t size;
if (!(pass = secrets_fetch(trust_keystr(domain), &size)) ||
size != sizeof(*pass))
return False;
if (pass_last_set_time) *pass_last_set_time = pass->mod_time;
memcpy(ret_pwd, pass->hash, 16);
free(pass);
return True;
}
/************************************************************************
Routine to set the trust account password for a domain.
************************************************************************/
BOOL secrets_store_trust_account_password(char *domain, uint8 new_pwd[16])
{
struct machine_acct_pass pass;
pass.mod_time = time(NULL);
memcpy(pass.hash, new_pwd, 16);
return secrets_store(trust_keystr(domain), (void *)&pass, sizeof(pass));
}
/************************************************************************
Routine to delete the trust account password file for a domain.
************************************************************************/
BOOL trust_password_delete(char *domain)
{
return secrets_delete(trust_keystr(domain));
}
/*******************************************************************
Reset the 'done' variables so after a client process is created
from a fork call these calls will be re-done. This should be
expanded if more variables need reseting.
******************************************************************/
void reset_globals_after_fork(void)
{
unsigned char dummy;
/*
* Increment the global seed value to ensure every smbd starts
* with a new random seed.
*/
if (tdb) {
uint32 initial_val = sys_getpid();
tdb_change_int_atomic(tdb, "INFO/random_seed", &initial_val, 1);
set_rand_reseed_data((unsigned char *)&initial_val, sizeof(initial_val));
}
/*
* Re-seed the random crypto generator, so all smbd's
* started from the same parent won't generate the same
* sequence.
*/
generate_random_buffer( &dummy, 1, True);
}
|
