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
208
209
210
211
212
213
214
|
/*
* Unix SMB/CIFS implementation.
* Routines to operate on various trust relationships
* Copyright (C) Andrew Bartlett 2001
* Copyright (C) Rafal Szczesniak 2003
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "../libcli/auth/libcli_auth.h"
#include "../libcli/auth/netlogon_creds_cli.h"
#include "rpc_client/cli_netlogon.h"
#include "rpc_client/cli_pipe.h"
#include "../librpc/gen_ndr/ndr_netlogon.h"
#include "secrets.h"
#include "passdb.h"
#include "libsmb/libsmb.h"
#include "source3/include/messages.h"
#include "source3/include/g_lock.h"
/*********************************************************
Change the domain password on the PDC.
Do most of the legwork ourselfs. Caller must have
already setup the connection to the NETLOGON pipe
**********************************************************/
struct trust_pw_change_state {
struct g_lock_ctx *g_ctx;
char *g_lock_key;
};
static int trust_pw_change_state_destructor(struct trust_pw_change_state *state)
{
g_lock_unlock(state->g_ctx, state->g_lock_key);
return 0;
}
NTSTATUS trust_pw_change(struct netlogon_creds_cli_context *context,
struct messaging_context *msg_ctx,
struct dcerpc_binding_handle *b,
const char *domain,
bool force)
{
TALLOC_CTX *frame = talloc_stackframe();
struct trust_pw_change_state *state;
struct samr_Password current_nt_hash;
const struct samr_Password *previous_nt_hash = NULL;
enum netr_SchannelType sec_channel_type = SEC_CHAN_NULL;
const char *account_name;
char *new_trust_passwd;
char *pwd;
struct dom_sid sid;
time_t pass_last_set_time;
struct timeval g_timeout = { 0, };
int timeout = 0;
struct timeval tv = { 0, };
NTSTATUS status;
state = talloc_zero(frame, struct trust_pw_change_state);
if (state == NULL) {
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
state->g_ctx = g_lock_ctx_init(state, msg_ctx);
if (state->g_ctx == NULL) {
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
state->g_lock_key = talloc_asprintf(state,
"trust_password_change_%s",
domain);
if (state->g_lock_key == NULL) {
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
g_timeout = timeval_current_ofs(10, 0);
status = g_lock_lock(state->g_ctx,
state->g_lock_key,
G_LOCK_WRITE, g_timeout);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(1, ("could not get g_lock on [%s]!\n",
state->g_lock_key));
TALLOC_FREE(frame);
return status;
}
talloc_set_destructor(state, trust_pw_change_state_destructor);
if (!get_trust_pw_hash(domain, current_nt_hash.hash,
&account_name,
&sec_channel_type)) {
DEBUG(0, ("could not fetch domain secrets for domain %s!\n", domain));
TALLOC_FREE(frame);
return NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
}
switch (sec_channel_type) {
case SEC_CHAN_WKSTA:
pwd = secrets_fetch_machine_password(domain,
&pass_last_set_time,
NULL);
if (pwd == NULL) {
TALLOC_FREE(frame);
return NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
}
free(pwd);
break;
case SEC_CHAN_DOMAIN:
if (!pdb_get_trusteddom_pw(domain, &pwd, &sid, &pass_last_set_time)) {
TALLOC_FREE(frame);
return NT_STATUS_TRUSTED_RELATIONSHIP_FAILURE;
}
break;
default:
TALLOC_FREE(frame);
return NT_STATUS_NOT_SUPPORTED;
}
timeout = lp_machine_password_timeout();
if (timeout == 0) {
if (!force) {
DEBUG(10,("machine password never expires\n"));
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
}
tv.tv_sec = pass_last_set_time;
DEBUG(10, ("password last changed %s\n",
timeval_string(talloc_tos(), &tv, false)));
tv.tv_sec += timeout;
DEBUGADD(10, ("password valid until %s\n",
timeval_string(talloc_tos(), &tv, false)));
if (!force && !timeval_expired(&tv)) {
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
/* Create a random machine account password */
new_trust_passwd = generate_random_password(frame,
DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH,
DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
if (new_trust_passwd == NULL) {
DEBUG(0, ("generate_random_password failed\n"));
TALLOC_FREE(frame);
return NT_STATUS_NO_MEMORY;
}
status = netlogon_creds_cli_auth(context, b,
current_nt_hash,
previous_nt_hash);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(frame);
return status;
}
status = netlogon_creds_cli_ServerPasswordSet(context, b,
new_trust_passwd, NULL);
if (!NT_STATUS_IS_OK(status)) {
TALLOC_FREE(frame);
return status;
}
DEBUG(3,("%s : trust_pw_change_and_store_it: Changed password.\n",
current_timestring(talloc_tos(), False)));
/*
* Return the result of trying to write the new password
* back into the trust account file.
*/
switch (sec_channel_type) {
case SEC_CHAN_WKSTA:
if (!secrets_store_machine_password(new_trust_passwd, domain, sec_channel_type)) {
TALLOC_FREE(frame);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
break;
case SEC_CHAN_DOMAIN:
/*
* we need to get the sid first for the
* pdb_set_trusteddom_pw call
*/
if (!pdb_set_trusteddom_pw(domain, new_trust_passwd, &sid)) {
TALLOC_FREE(frame);
return NT_STATUS_INTERNAL_DB_CORRUPTION;
}
break;
default:
break;
}
TALLOC_FREE(frame);
return NT_STATUS_OK;
}
|
