2 Unix SMB/CIFS implementation.
3 Authentication utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Andrew Bartlett 2001
6 Copyright (C) Jeremy Allison 2000-2001
7 Copyright (C) Rafal Szczesniak 2002
8 Copyright (C) Stefan Metzmacher 2005
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include "auth/auth.h"
26 #include "libcli/auth/libcli_auth.h"
27 #include "param/param.h"
29 /* this default function can be used by mostly all backends
30 * which don't want to set a challenge
32 NTSTATUS
auth_get_challenge_not_implemented(struct auth_method_context
*ctx
, TALLOC_CTX
*mem_ctx
, uint8_t chal
[8])
34 /* we don't want to set a challenge */
35 return NT_STATUS_NOT_IMPLEMENTED
;
38 /****************************************************************************
39 Create an auth_usersupplied_data structure after appropriate mapping.
40 ****************************************************************************/
42 NTSTATUS
map_user_info(TALLOC_CTX
*mem_ctx
,
43 const char *default_domain
,
44 const struct auth_usersupplied_info
*user_info
,
45 struct auth_usersupplied_info
**user_info_mapped
)
50 DEBUG(5,("map_user_info: Mapping user [%s]\\[%s] from workstation [%s]\n",
51 user_info
->client
.domain_name
, user_info
->client
.account_name
, user_info
->workstation_name
));
53 account_name
= talloc_strdup(mem_ctx
, user_info
->client
.account_name
);
55 return NT_STATUS_NO_MEMORY
;
58 /* don't allow "" as a domain, fixes a Win9X bug
59 where it doesn't supply a domain for logon script
60 'net use' commands. */
62 /* Split user@realm names into user and realm components. This is TODO to fix with proper userprincipalname support */
63 if (user_info
->client
.domain_name
&& *user_info
->client
.domain_name
) {
64 domain
= user_info
->client
.domain_name
;
65 } else if (strchr_m(user_info
->client
.account_name
, '@')) {
66 d
= strchr_m(account_name
, '@');
68 return NT_STATUS_INTERNAL_ERROR
;
74 domain
= default_domain
;
77 *user_info_mapped
= talloc_zero(mem_ctx
, struct auth_usersupplied_info
);
78 if (!*user_info_mapped
) {
79 return NT_STATUS_NO_MEMORY
;
81 if (!talloc_reference(*user_info_mapped
, user_info
)) {
82 return NT_STATUS_NO_MEMORY
;
84 **user_info_mapped
= *user_info
;
85 (*user_info_mapped
)->mapped_state
= true;
86 (*user_info_mapped
)->mapped
.domain_name
= talloc_strdup(*user_info_mapped
, domain
);
87 (*user_info_mapped
)->mapped
.account_name
= talloc_strdup(*user_info_mapped
, account_name
);
88 talloc_free(account_name
);
89 if (!(*user_info_mapped
)->mapped
.domain_name
90 || !(*user_info_mapped
)->mapped
.account_name
) {
91 return NT_STATUS_NO_MEMORY
;
97 /****************************************************************************
98 Create an auth_usersupplied_data structure after appropriate mapping.
99 ****************************************************************************/
101 NTSTATUS
encrypt_user_info(TALLOC_CTX
*mem_ctx
, struct auth_context
*auth_context
,
102 enum auth_password_state to_state
,
103 const struct auth_usersupplied_info
*user_info_in
,
104 const struct auth_usersupplied_info
**user_info_encrypted
)
107 struct auth_usersupplied_info
*user_info_temp
;
109 case AUTH_PASSWORD_RESPONSE
:
110 switch (user_info_in
->password_state
) {
111 case AUTH_PASSWORD_PLAIN
:
113 const struct auth_usersupplied_info
*user_info_temp2
;
114 nt_status
= encrypt_user_info(mem_ctx
, auth_context
,
116 user_info_in
, &user_info_temp2
);
117 if (!NT_STATUS_IS_OK(nt_status
)) {
120 user_info_in
= user_info_temp2
;
123 case AUTH_PASSWORD_HASH
:
126 DATA_BLOB chall_blob
;
127 user_info_temp
= talloc_zero(mem_ctx
, struct auth_usersupplied_info
);
128 if (!user_info_temp
) {
129 return NT_STATUS_NO_MEMORY
;
131 if (!talloc_reference(user_info_temp
, user_info_in
)) {
132 return NT_STATUS_NO_MEMORY
;
134 *user_info_temp
= *user_info_in
;
135 user_info_temp
->mapped_state
= to_state
;
137 nt_status
= auth_get_challenge(auth_context
, chal
);
138 if (!NT_STATUS_IS_OK(nt_status
)) {
142 chall_blob
= data_blob_talloc(mem_ctx
, chal
, 8);
143 if (lpcfg_client_ntlmv2_auth(auth_context
->lp_ctx
)) {
144 DATA_BLOB names_blob
= NTLMv2_generate_names_blob(mem_ctx
, lpcfg_netbios_name(auth_context
->lp_ctx
), lpcfg_workgroup(auth_context
->lp_ctx
));
145 DATA_BLOB lmv2_response
, ntlmv2_response
, lmv2_session_key
, ntlmv2_session_key
;
147 if (!SMBNTLMv2encrypt_hash(user_info_temp
,
148 user_info_in
->client
.account_name
,
149 user_info_in
->client
.domain_name
,
150 user_info_in
->password
.hash
.nt
->hash
, &chall_blob
,
152 &lmv2_response
, &ntlmv2_response
,
153 &lmv2_session_key
, &ntlmv2_session_key
)) {
154 data_blob_free(&names_blob
);
155 return NT_STATUS_NO_MEMORY
;
157 data_blob_free(&names_blob
);
158 user_info_temp
->password
.response
.lanman
= lmv2_response
;
159 user_info_temp
->password
.response
.nt
= ntlmv2_response
;
161 data_blob_free(&lmv2_session_key
);
162 data_blob_free(&ntlmv2_session_key
);
164 DATA_BLOB blob
= data_blob_talloc(mem_ctx
, NULL
, 24);
165 SMBOWFencrypt(user_info_in
->password
.hash
.nt
->hash
, chal
, blob
.data
);
167 user_info_temp
->password
.response
.nt
= blob
;
168 if (lpcfg_client_lanman_auth(auth_context
->lp_ctx
) && user_info_in
->password
.hash
.lanman
) {
169 DATA_BLOB lm_blob
= data_blob_talloc(mem_ctx
, NULL
, 24);
170 SMBOWFencrypt(user_info_in
->password
.hash
.lanman
->hash
, chal
, blob
.data
);
171 user_info_temp
->password
.response
.lanman
= lm_blob
;
173 /* if not sending the LM password, send the NT password twice */
174 user_info_temp
->password
.response
.lanman
= user_info_temp
->password
.response
.nt
;
178 user_info_in
= user_info_temp
;
181 case AUTH_PASSWORD_RESPONSE
:
182 *user_info_encrypted
= user_info_in
;
185 case AUTH_PASSWORD_HASH
:
187 switch (user_info_in
->password_state
) {
188 case AUTH_PASSWORD_PLAIN
:
190 struct samr_Password lanman
;
191 struct samr_Password nt
;
193 user_info_temp
= talloc_zero(mem_ctx
, struct auth_usersupplied_info
);
194 if (!user_info_temp
) {
195 return NT_STATUS_NO_MEMORY
;
197 if (!talloc_reference(user_info_temp
, user_info_in
)) {
198 return NT_STATUS_NO_MEMORY
;
200 *user_info_temp
= *user_info_in
;
201 user_info_temp
->mapped_state
= to_state
;
203 if (E_deshash(user_info_in
->password
.plaintext
, lanman
.hash
)) {
204 user_info_temp
->password
.hash
.lanman
= talloc(user_info_temp
,
205 struct samr_Password
);
206 *user_info_temp
->password
.hash
.lanman
= lanman
;
208 user_info_temp
->password
.hash
.lanman
= NULL
;
211 E_md4hash(user_info_in
->password
.plaintext
, nt
.hash
);
212 user_info_temp
->password
.hash
.nt
= talloc(user_info_temp
,
213 struct samr_Password
);
214 *user_info_temp
->password
.hash
.nt
= nt
;
216 user_info_in
= user_info_temp
;
219 case AUTH_PASSWORD_HASH
:
220 *user_info_encrypted
= user_info_in
;
223 return NT_STATUS_INVALID_PARAMETER
;
229 return NT_STATUS_INVALID_PARAMETER
;