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
|
/*
Unix SMB/Netbios implementation.
Version 2.0
Winbind daemon - miscellaneous other functions
Copyright (C) Tim Potter 2000
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.
*/
#include "winbindd.h"
extern pstring global_myname;
/* Some routines to fetch the trust account password from a HEAD
version of Samba. Yuck. )-: */
/************************************************************************
form a key for fetching a domain trust password from
************************************************************************/
static char *trust_keystr(char *domain)
{
static fstring keystr;
snprintf(keystr,sizeof(keystr),"%s/%s", SECRETS_MACHINE_ACCT_PASS,
domain);
return keystr;
}
/************************************************************************
Routine to get the trust account password for a domain
************************************************************************/
static BOOL _get_trust_account_password(char *domain, unsigned char *ret_pwd,
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);
SAFE_FREE(pass);
return True;
}
/* Check the machine account password is valid */
enum winbindd_result winbindd_check_machine_acct(struct winbindd_cli_state *state)
{
NTSTATUS status;
uchar trust_passwd[16];
struct in_addr *ip_list = NULL;
int count;
fstring controller, trust_account;
int num_retries = 0;
DEBUG(3, ("[%5d]: check machine account\n", state->pid));
/* Get trust account password */
again:
if (!_get_trust_account_password(lp_workgroup(), trust_passwd,
NULL)) {
status = NT_STATUS_INTERNAL_ERROR;
goto done;
}
/* Get domain controller */
if (!get_dc_list(True, lp_workgroup(), &ip_list, &count) ||
!lookup_pdc_name(global_myname, lp_workgroup(), &ip_list[0],
controller)) {
DEBUG(0, ("could not find domain controller for "
"domain %s\n", lp_workgroup()));
status = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
goto done;
}
DEBUG(3, ("contacting controller %s to check secret\n", controller));
/* Contact domain controller to check secret */
slprintf(trust_account, sizeof(trust_account) - 1, "%s$",
global_myname);
#if 0 /* XXX */
{
uint16 validation_level;
status = cli_nt_setup_creds(controller, lp_workgroup(), global_myname,
trust_account, trust_passwd,
SEC_CHAN_WKSTA, &validation_level);
}
#endif
/* There is a race condition between fetching the trust account
password and joining the domain so it's possible that the trust
account password has been changed on us. We are returned
NT_STATUS_ACCESS_DENIED if this happens. */
#define MAX_RETRIES 8
if ((num_retries < MAX_RETRIES) &&
NT_STATUS_V(status) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED)) {
num_retries++;
goto again;
}
/* Pass back result code - zero for success, other values for
specific failures. */
DEBUG(3, ("secret is %s\n", NT_STATUS_IS_OK(status) ? "good" : "bad"));
done:
state->response.data.num_entries = NT_STATUS_V(status);
return WINBINDD_OK;
}
enum winbindd_result winbindd_list_trusted_domains(struct winbindd_cli_state
*state)
{
struct winbindd_domain *domain;
int total_entries = 0, extra_data_len = 0;
char *ted, *extra_data = NULL;
DEBUG(3, ("[%5d]: list trusted domains\n", state->pid));
if (domain_list == NULL)
get_domain_info();
for(domain = domain_list; domain; domain = domain->next) {
/* Skip own domain */
if (strequal(domain->name, lp_workgroup())) continue;
/* Add domain to list */
total_entries++;
ted = Realloc(extra_data, sizeof(fstring) *
total_entries);
if (!ted) {
DEBUG(0,("winbindd_list_trusted_domains: failed to enlarge buffer!\n"));
SAFE_FREE(extra_data);
return WINBINDD_ERROR;
}
else extra_data = ted;
memcpy(&extra_data[extra_data_len], domain->name,
strlen(domain->name));
extra_data_len += strlen(domain->name);
extra_data[extra_data_len++] = ',';
}
if (extra_data) {
if (extra_data_len > 1) extra_data[extra_data_len - 1] = '\0';
state->response.extra_data = extra_data;
state->response.length += extra_data_len;
}
return WINBINDD_OK;
}
|
