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
215
216
217
218
219
220
221
222
223
224
225
226
|
/*
Unix SMB/Netbios implementation.
Version 3.0
Winbind daemon - pam auth funcions
Copyright (C) Andrew Tridgell 2000
Copyright (C) Tim Potter 2001
Copyright (C) Andrew Bartlett 2001
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"
/* Return a password structure from a username. */
enum winbindd_result winbindd_pam_auth(struct winbindd_cli_state *state)
{
NTSTATUS result;
fstring name_domain, name_user;
int passlen;
unsigned char trust_passwd[16];
time_t last_change_time;
uint32 smb_uid_low;
NET_USER_INFO_3 info3;
struct cli_state *cli;
uchar chal[8];
TALLOC_CTX *mem_ctx;
DATA_BLOB lm_resp;
DATA_BLOB nt_resp;
extern pstring global_myname;
DEBUG(3, ("[%5d]: pam auth %s\n", state->pid,
state->request.data.auth.user));
if (!(mem_ctx = talloc_init_named("winbind pam auth for %s", state->request.data.auth.user))) {
DEBUG(0, ("winbindd_pam_auth: could not talloc_init()!\n"));
return WINBINDD_ERROR;
}
/* Parse domain and username */
if (!parse_domain_user(state->request.data.auth.user, name_domain,
name_user))
return WINBINDD_ERROR;
passlen = strlen(state->request.data.auth.pass);
if (!*state->request.data.auth.pass) {
return WINBINDD_ERROR;
} else {
unsigned char local_lm_response[24];
unsigned char local_nt_response[24];
generate_random_buffer(chal, 8, False);
SMBencrypt( (const uchar *)state->request.data.auth.pass, chal, local_lm_response);
SMBNTencrypt((const uchar *)state->request.data.auth.pass, chal, local_nt_response);
lm_resp = data_blob(local_lm_response, sizeof(local_lm_response));
nt_resp = data_blob(local_nt_response, sizeof(local_nt_response));
}
/*
* Get the machine account password for our primary domain
*/
if (!secrets_fetch_trust_account_password(
lp_workgroup(), trust_passwd, &last_change_time)) {
DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
"password for domain %s\n", lp_workgroup()));
return WINBINDD_ERROR;
}
/* We really don't care what LUID we give the user. */
generate_random_buffer( (unsigned char *)&smb_uid_low, 4, False);
ZERO_STRUCT(info3);
result = cm_get_netlogon_cli(lp_workgroup(), trust_passwd, &cli);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
goto done;
}
result = cli_netlogon_sam_network_logon(cli, mem_ctx,
name_user, name_domain,
global_myname, chal,
lm_resp, nt_resp,
&info3);
done:
data_blob_free(&lm_resp);
data_blob_free(&nt_resp);
cli_shutdown(cli);
talloc_destroy(mem_ctx);
return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
}
/* Challenge Response Authentication Protocol */
enum winbindd_result winbindd_pam_auth_crap(struct winbindd_cli_state *state)
{
NTSTATUS result;
fstring name_domain, name_user;
unsigned char trust_passwd[16];
time_t last_change_time;
NET_USER_INFO_3 info3;
struct cli_state *cli;
TALLOC_CTX *mem_ctx;
DATA_BLOB lm_resp, nt_resp;
extern pstring global_myname;
DEBUG(3, ("[%5d]: pam auth crap %s\n", state->pid,
state->request.data.auth_crap.user));
if (!(mem_ctx = talloc_init_named("winbind pam auth for %s", state->request.data.auth.user))) {
DEBUG(0, ("winbindd_pam_auth_crap: could not talloc_init()!\n"));
return WINBINDD_ERROR;
}
/* Parse domain and username */
if (!parse_domain_user(state->request.data.auth_crap.user, name_domain,
name_user))
return WINBINDD_ERROR;
lm_resp = data_blob(state->request.data.auth_crap.lm_resp, state->request.data.auth_crap.lm_resp_len);
nt_resp = data_blob(state->request.data.auth_crap.nt_resp, state->request.data.auth_crap.nt_resp_len);
/*
* Get the machine account password for our primary domain
*/
if (!secrets_fetch_trust_account_password(
lp_workgroup(), trust_passwd, &last_change_time)) {
DEBUG(0, ("winbindd_pam_auth: could not fetch trust account "
"password for domain %s\n", lp_workgroup()));
return WINBINDD_ERROR;
}
ZERO_STRUCT(info3);
result = cm_get_netlogon_cli(lp_workgroup(), trust_passwd, &cli);
if (!NT_STATUS_IS_OK(result)) {
DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
goto done;
}
result = cli_netlogon_sam_network_logon(cli, mem_ctx,
name_user, name_domain,
global_myname, state->request.data.auth_crap.chal,
lm_resp, nt_resp,
&info3);
done:
talloc_destroy(mem_ctx);
cli_shutdown(cli);
return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
}
/* Change a user password */
enum winbindd_result winbindd_pam_chauthtok(struct winbindd_cli_state *state)
{
char *oldpass, *newpass;
fstring domain, user;
uchar nt_oldhash[16];
uchar lm_oldhash[16];
DEBUG(3, ("[%5d]: pam chauthtok %s\n", state->pid,
state->request.data.chauthtok.user));
/* Setup crap */
if (state == NULL)
return WINBINDD_ERROR;
if (!parse_domain_user(state->request.data.chauthtok.user, domain, user))
return WINBINDD_ERROR;
oldpass = state->request.data.chauthtok.oldpass;
newpass = state->request.data.chauthtok.newpass;
nt_lm_owf_gen(oldpass, nt_oldhash, lm_oldhash);
/* Change password */
#if 0
/* XXX */
if (!msrpc_sam_ntchange_pwd(server_state.controller, domain, user,
lm_oldhash, nt_oldhash, newpass)) {
DEBUG(0, ("password change failed for user %s/%s\n", domain, user));
return WINBINDD_ERROR;
}
#endif
return WINBINDD_OK;
}
|
