source: vendor/3.6.0/source3/auth/auth_winbind.c

Last change on this file was 740, checked in by Silvan Scherrer, 13 years ago

Samba Server: update vendor to 3.6.0
File size: 5.0 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 Winbind authentication mechnism
5
6 Copyright (C) Tim Potter 2000
7 Copyright (C) Andrew Bartlett 2001 - 2002
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
21*/
22
23#include "includes.h"
24#include "auth.h"
25#include "nsswitch/libwbclient/wbclient.h"
26
27#undef DBGC_CLASS
28#define DBGC_CLASS DBGC_AUTH
29
30/* Authenticate a user with a challenge/response */
31
32static NTSTATUS check_winbind_security(const struct auth_context *auth_context,
33 void *my_private_data,
34 TALLOC_CTX *mem_ctx,
35 const struct auth_usersupplied_info *user_info,
36 struct auth_serversupplied_info **server_info)
37{
38 NTSTATUS nt_status;
39 wbcErr wbc_status;
40 struct wbcAuthUserParams params;
41 struct wbcAuthUserInfo *info = NULL;
42 struct wbcAuthErrorInfo *err = NULL;
43
44 ZERO_STRUCT(params);
45
46 if (!user_info) {
47 return NT_STATUS_INVALID_PARAMETER;
48 }
49
50 DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name));
51
52 if (!auth_context) {
53 DEBUG(3,("Password for user %s cannot be checked because we have no auth_info to get the challenge from.\n",
54 user_info->mapped.account_name));
55 return NT_STATUS_INVALID_PARAMETER;
56 }
57
58 if (strequal(user_info->mapped.domain_name, get_global_sam_name())) {
59 DEBUG(3,("check_winbind_security: Not using winbind, requested domain [%s] was for this SAM.\n",
60 user_info->mapped.domain_name));
61 return NT_STATUS_NOT_IMPLEMENTED;
62 }
63
64 /* Send off request */
65
66 params.account_name = user_info->client.account_name;
67 params.domain_name = user_info->mapped.domain_name;
68 params.workstation_name = user_info->workstation_name;
69
70 params.flags = 0;
71 params.parameter_control= user_info->logon_parameters;
72
73 params.level = WBC_AUTH_USER_LEVEL_RESPONSE;
74
75 memcpy(params.password.response.challenge,
76 auth_context->challenge.data,
77 sizeof(params.password.response.challenge));
78
79 if (user_info->password.response.nt.length != 0) {
80 params.password.response.nt_length =
81 user_info->password.response.nt.length;
82 params.password.response.nt_data =
83 user_info->password.response.nt.data;
84 }
85 if (user_info->password.response.lanman.length != 0) {
86 params.password.response.lm_length =
87 user_info->password.response.lanman.length;
88 params.password.response.lm_data =
89 user_info->password.response.lanman.data;
90 }
91
92 /* we are contacting the privileged pipe */
93 become_root();
94 wbc_status = wbcAuthenticateUserEx(&params, &info, &err);
95 unbecome_root();
96
97 if (!WBC_ERROR_IS_OK(wbc_status)) {
98 DEBUG(10,("check_winbind_security: wbcAuthenticateUserEx failed: %s\n",
99 wbcErrorString(wbc_status)));
100 }
101
102 if (wbc_status == WBC_ERR_NO_MEMORY) {
103 return NT_STATUS_NO_MEMORY;
104 }
105
106 if (wbc_status == WBC_ERR_WINBIND_NOT_AVAILABLE) {
107 struct auth_methods *auth_method =
108 (struct auth_methods *)my_private_data;
109
110 if ( auth_method )
111 return auth_method->auth(auth_context, auth_method->private_data,
112 mem_ctx, user_info, server_info);
113 return NT_STATUS_LOGON_FAILURE;
114 }
115
116 if (wbc_status == WBC_ERR_AUTH_ERROR) {
117 nt_status = NT_STATUS(err->nt_status);
118 wbcFreeMemory(err);
119 return nt_status;
120 }
121
122 if (!WBC_ERROR_IS_OK(wbc_status)) {
123 return NT_STATUS_LOGON_FAILURE;
124 }
125
126 nt_status = make_server_info_wbcAuthUserInfo(mem_ctx,
127 user_info->client.account_name,
128 user_info->mapped.domain_name,
129 info, server_info);
130 wbcFreeMemory(info);
131 if (!NT_STATUS_IS_OK(nt_status)) {
132 return nt_status;
133 }
134
135 (*server_info)->nss_token |= user_info->was_mapped;
136
137 return nt_status;
138}
139
140/* module initialisation */
141static NTSTATUS auth_init_winbind(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
142{
143 struct auth_methods *result;
144
145 result = TALLOC_ZERO_P(auth_context, struct auth_methods);
146 if (result == NULL) {
147 return NT_STATUS_NO_MEMORY;
148 }
149 result->name = "winbind";
150 result->auth = check_winbind_security;
151
152 if (param && *param) {
153 /* we load the 'fallback' module - if winbind isn't here, call this
154 module */
155 auth_methods *priv;
156 if (!load_auth_module(auth_context, param, &priv)) {
157 return NT_STATUS_UNSUCCESSFUL;
158 }
159 result->private_data = (void *)priv;
160 }
161
162 *auth_method = result;
163 return NT_STATUS_OK;
164}
165
166NTSTATUS auth_winbind_init(void)
167{
168 return smb_register_auth(AUTH_INTERFACE_VERSION, "winbind", auth_init_winbind);
169}
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