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
|
/*
Unix SMB/CIFS implementation.
Winbind authentication mechnism
Copyright (C) Tim Potter 2000
Copyright (C) Andrew Bartlett 2001 - 2002
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 "includes.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_AUTH
static NTSTATUS get_info3_from_ndr(TALLOC_CTX *mem_ctx, struct winbindd_response *response, NET_USER_INFO_3 *info3)
{
uint8 *info3_ndr;
size_t len = response->length - sizeof(struct winbindd_response);
prs_struct ps;
if (len > 0) {
info3_ndr = response->extra_data.data;
if (!prs_init(&ps, len, mem_ctx, UNMARSHALL)) {
return NT_STATUS_NO_MEMORY;
}
prs_copy_data_in(&ps, (char *)info3_ndr, len);
prs_set_offset(&ps,0);
if (!net_io_user_info3("", info3, &ps, 1, 3, False)) {
DEBUG(2, ("get_info3_from_ndr: could not parse info3 struct!\n"));
return NT_STATUS_UNSUCCESSFUL;
}
prs_mem_free(&ps);
return NT_STATUS_OK;
} else {
DEBUG(2, ("get_info3_from_ndr: No info3 struct found!\n"));
return NT_STATUS_UNSUCCESSFUL;
}
}
/* Authenticate a user with a challenge/response */
static NTSTATUS check_winbind_security(const struct auth_context *auth_context,
void *my_private_data,
TALLOC_CTX *mem_ctx,
const auth_usersupplied_info *user_info,
auth_serversupplied_info **server_info)
{
struct winbindd_request request;
struct winbindd_response response;
NSS_STATUS result;
NTSTATUS nt_status;
NET_USER_INFO_3 info3;
if (!user_info) {
return NT_STATUS_INVALID_PARAMETER;
}
if (!auth_context) {
DEBUG(3,("Password for user %s cannot be checked because we have no auth_info to get the challenge from.\n",
user_info->internal_username));
return NT_STATUS_INVALID_PARAMETER;
}
if (strequal(user_info->domain, get_global_sam_name())) {
DEBUG(3,("check_winbind_security: Not using winbind, requested domain [%s] was for this SAM.\n",
user_info->domain));
return NT_STATUS_NOT_IMPLEMENTED;
}
/* Send off request */
ZERO_STRUCT(request);
ZERO_STRUCT(response);
request.flags = WBFLAG_PAM_INFO3_NDR;
request.data.auth_crap.logon_parameters = user_info->logon_parameters;
fstrcpy(request.data.auth_crap.user, user_info->smb_name);
fstrcpy(request.data.auth_crap.domain, user_info->domain);
fstrcpy(request.data.auth_crap.workstation, user_info->wksta_name);
memcpy(request.data.auth_crap.chal, auth_context->challenge.data, sizeof(request.data.auth_crap.chal));
request.data.auth_crap.lm_resp_len = MIN(user_info->lm_resp.length,
sizeof(request.data.auth_crap.lm_resp));
request.data.auth_crap.nt_resp_len = MIN(user_info->nt_resp.length,
sizeof(request.data.auth_crap.nt_resp));
memcpy(request.data.auth_crap.lm_resp, user_info->lm_resp.data,
request.data.auth_crap.lm_resp_len);
memcpy(request.data.auth_crap.nt_resp, user_info->nt_resp.data,
request.data.auth_crap.nt_resp_len);
/* we are contacting the privileged pipe */
become_root();
result = winbindd_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response);
unbecome_root();
if ( result == NSS_STATUS_UNAVAIL ) {
struct auth_methods *auth_method = my_private_data;
if ( auth_method )
return auth_method->auth(auth_context, auth_method->private_data,
mem_ctx, user_info, server_info);
else
/* log an error since this should not happen */
DEBUG(0,("check_winbind_security: ERROR! my_private_data == NULL!\n"));
}
nt_status = NT_STATUS(response.data.auth.nt_status);
if (result == NSS_STATUS_SUCCESS && response.extra_data.data) {
if (NT_STATUS_IS_OK(nt_status)) {
if (NT_STATUS_IS_OK(nt_status = get_info3_from_ndr(mem_ctx, &response, &info3))) {
nt_status = make_server_info_info3(mem_ctx,
user_info->smb_name, user_info->domain,
server_info, &info3);
}
if (NT_STATUS_IS_OK(nt_status)) {
(*server_info)->was_mapped |= user_info->was_mapped;
}
}
} else if (NT_STATUS_IS_OK(nt_status)) {
nt_status = NT_STATUS_NO_LOGON_SERVERS;
}
SAFE_FREE(response.extra_data.data);
return nt_status;
}
/* module initialisation */
static NTSTATUS auth_init_winbind(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
{
if (!make_auth_methods(auth_context, auth_method)) {
return NT_STATUS_NO_MEMORY;
}
(*auth_method)->name = "winbind";
(*auth_method)->auth = check_winbind_security;
if (param && *param) {
/* we load the 'fallback' module - if winbind isn't here, call this
module */
if (!load_auth_module(auth_context, param, (auth_methods **)&(*auth_method)->private_data)) {
return NT_STATUS_UNSUCCESSFUL;
}
}
return NT_STATUS_OK;
}
NTSTATUS auth_winbind_init(void)
{
return smb_register_auth(AUTH_INTERFACE_VERSION, "winbind", auth_init_winbind);
}
|
