2 Unix SMB/CIFS implementation.
3 Password and authentication handling
4 Copyright (C) Andrew Tridgell 1992-2000
5 Copyright (C) Luke Kenneth Casson Leighton 1996-2000
6 Copyright (C) Andrew Bartlett 2001-2003
7 Copyright (C) Gerald Carter 2003
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 2 of the License, or
12 (at your option) any later version.
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.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #define DBGC_CLASS DBGC_AUTH
29 /****************************************************************************
30 Do a specific test for an smb password being correct, given a smb_password and
31 the lanman and NT responses.
32 ****************************************************************************/
34 static NTSTATUS
sam_password_ok(const struct auth_context
*auth_context
,
37 const auth_usersupplied_info
*user_info
,
38 DATA_BLOB
*user_sess_key
,
39 DATA_BLOB
*lm_sess_key
)
42 const uint8
*lm_pw
, *nt_pw
;
43 const char *username
= pdb_get_username(sampass
);
45 acct_ctrl
= pdb_get_acct_ctrl(sampass
);
46 if (acct_ctrl
& ACB_PWNOTREQ
) {
47 if (lp_null_passwords()) {
48 DEBUG(3,("Account for user '%s' has no password and null passwords are allowed.\n", username
));
51 DEBUG(3,("Account for user '%s' has no password and null passwords are NOT allowed.\n", username
));
52 return NT_STATUS_LOGON_FAILURE
;
56 lm_pw
= pdb_get_lanman_passwd(sampass
);
57 nt_pw
= pdb_get_nt_passwd(sampass
);
59 return ntlm_password_check(mem_ctx
, &auth_context
->challenge
,
60 &user_info
->lm_resp
, &user_info
->nt_resp
,
61 &user_info
->lm_interactive_pwd
, &user_info
->nt_interactive_pwd
,
63 user_info
->smb_name
.str
,
64 user_info
->client_domain
.str
,
65 lm_pw
, nt_pw
, user_sess_key
, lm_sess_key
);
69 /****************************************************************************
70 Do a specific test for a SAM_ACCOUNT being vaild for this connection
71 (ie not disabled, expired and the like).
72 ****************************************************************************/
74 static NTSTATUS
sam_account_ok(TALLOC_CTX
*mem_ctx
,
76 const auth_usersupplied_info
*user_info
)
78 uint16 acct_ctrl
= pdb_get_acct_ctrl(sampass
);
79 char *workstation_list
;
82 DEBUG(4,("sam_account_ok: Checking SMB password for user %s\n",pdb_get_username(sampass
)));
84 /* Quit if the account was disabled. */
85 if (acct_ctrl
& ACB_DISABLED
) {
86 DEBUG(1,("sam_account_ok: Account for user '%s' was disabled.\n", pdb_get_username(sampass
)));
87 return NT_STATUS_ACCOUNT_DISABLED
;
90 /* Quit if the account was locked out. */
91 if (acct_ctrl
& ACB_AUTOLOCK
) {
92 DEBUG(1,("sam_account_ok: Account for user %s was locked out.\n", pdb_get_username(sampass
)));
93 return NT_STATUS_ACCOUNT_LOCKED_OUT
;
96 /* Test account expire time */
98 kickoff_time
= pdb_get_kickoff_time(sampass
);
99 if (kickoff_time
!= 0 && time(NULL
) > kickoff_time
) {
100 DEBUG(1,("sam_account_ok: Account for user '%s' has expired.\n", pdb_get_username(sampass
)));
101 DEBUG(3,("sam_account_ok: Account expired at '%ld' unix time.\n", (long)kickoff_time
));
102 return NT_STATUS_ACCOUNT_EXPIRED
;
105 if (!(pdb_get_acct_ctrl(sampass
) & ACB_PWNOEXP
)) {
106 time_t must_change_time
= pdb_get_pass_must_change_time(sampass
);
107 time_t last_set_time
= pdb_get_pass_last_set_time(sampass
);
109 /* check for immediate expiry "must change at next logon" */
110 if (must_change_time
== 0 && last_set_time
!= 0) {
111 DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n", pdb_get_username(sampass
)));
112 return NT_STATUS_PASSWORD_MUST_CHANGE
;
115 /* check for expired password */
116 if (must_change_time
< time(NULL
) && must_change_time
!= 0) {
117 DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n", pdb_get_username(sampass
)));
118 DEBUG(1,("sam_account_ok: Password expired at '%s' (%ld) unix time.\n", http_timestring(must_change_time
), (long)must_change_time
));
119 return NT_STATUS_PASSWORD_EXPIRED
;
123 /* Test workstation. Workstation list is comma separated. */
125 workstation_list
= talloc_strdup(mem_ctx
, pdb_get_workstations(sampass
));
126 if (!workstation_list
)
127 return NT_STATUS_NO_MEMORY
;
129 if (*workstation_list
) {
130 BOOL invalid_ws
= True
;
131 const char *s
= workstation_list
;
135 while (next_token(&s
, tok
, ",", sizeof(tok
))) {
136 DEBUG(10,("sam_account_ok: checking for workstation match %s and %s (len=%d)\n",
137 tok
, user_info
->wksta_name
.str
, user_info
->wksta_name
.len
));
138 if(strequal(tok
, user_info
->wksta_name
.str
)) {
145 return NT_STATUS_INVALID_WORKSTATION
;
148 if (acct_ctrl
& ACB_DOMTRUST
) {
149 DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", pdb_get_username(sampass
)));
150 return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT
;
153 if (acct_ctrl
& ACB_SVRTRUST
) {
154 DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", pdb_get_username(sampass
)));
155 return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT
;
158 if (acct_ctrl
& ACB_WSTRUST
) {
159 DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", pdb_get_username(sampass
)));
160 return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT
;
166 /****************************************************************************
167 check if a username/password is OK assuming the password is a 24 byte
168 SMB hash supplied in the user_info structure
169 return an NT_STATUS constant.
170 ****************************************************************************/
172 static NTSTATUS
check_sam_security(const struct auth_context
*auth_context
,
173 void *my_private_data
,
175 const auth_usersupplied_info
*user_info
,
176 auth_serversupplied_info
**server_info
)
178 SAM_ACCOUNT
*sampass
=NULL
;
181 DATA_BLOB user_sess_key
= data_blob(NULL
, 0);
182 DATA_BLOB lm_sess_key
= data_blob(NULL
, 0);
183 BOOL updated_autolock
= False
, updated_badpw
= False
;
185 if (!user_info
|| !auth_context
) {
186 return NT_STATUS_UNSUCCESSFUL
;
189 /* Can't use the talloc version here, because the returned struct gets
190 kept on the server_info */
191 if (!NT_STATUS_IS_OK(nt_status
= pdb_init_sam(&sampass
))) {
195 /* get the account information */
198 ret
= pdb_getsampwnam(sampass
, user_info
->internal_username
.str
);
202 DEBUG(3,("check_sam_security: Couldn't find user '%s' in passdb file.\n", user_info
->internal_username
.str
));
203 pdb_free_sam(&sampass
);
204 return NT_STATUS_NO_SUCH_USER
;
207 /* see if autolock flag needs to be updated */
208 if (pdb_get_acct_ctrl(sampass
) & ACB_NORMAL
)
209 pdb_update_autolock_flag(sampass
, &updated_autolock
);
210 /* Quit if the account was locked out. */
211 if (pdb_get_acct_ctrl(sampass
) & ACB_AUTOLOCK
) {
212 DEBUG(3,("check_sam_security: Account for user %s was locked out.\n", pdb_get_username(sampass
)));
213 return NT_STATUS_ACCOUNT_LOCKED_OUT
;
216 nt_status
= sam_password_ok(auth_context
, mem_ctx
, sampass
,
217 user_info
, &user_sess_key
, &lm_sess_key
);
219 if (!NT_STATUS_IS_OK(nt_status
)) {
220 if (NT_STATUS_EQUAL(nt_status
,NT_STATUS_WRONG_PASSWORD
) &&
221 pdb_get_acct_ctrl(sampass
) &ACB_NORMAL
) {
222 pdb_increment_bad_password_count(sampass
);
223 updated_badpw
= True
;
225 pdb_update_bad_password_count(sampass
,
228 if (updated_autolock
|| updated_badpw
){
230 if(!pdb_update_sam_account(sampass
))
231 DEBUG(1, ("Failed to modify entry.\n"));
234 pdb_free_sam(&sampass
);
238 if ((pdb_get_acct_ctrl(sampass
) & ACB_NORMAL
) &&
239 (pdb_get_bad_password_count(sampass
) > 0)){
240 pdb_set_bad_password_count(sampass
, 0, PDB_CHANGED
);
241 pdb_set_bad_password_time(sampass
, 0, PDB_CHANGED
);
242 updated_badpw
= True
;
245 if (updated_autolock
|| updated_badpw
){
247 if(!pdb_update_sam_account(sampass
))
248 DEBUG(1, ("Failed to modify entry.\n"));
252 nt_status
= sam_account_ok(mem_ctx
, sampass
, user_info
);
254 if (!NT_STATUS_IS_OK(nt_status
)) {
255 pdb_free_sam(&sampass
);
259 if (!NT_STATUS_IS_OK(nt_status
= make_server_info_sam(server_info
, sampass
))) {
260 DEBUG(0,("check_sam_security: make_server_info_sam() failed with '%s'\n", nt_errstr(nt_status
)));
264 (*server_info
)->user_session_key
= user_sess_key
;
265 (*server_info
)->lm_session_key
= lm_sess_key
;
270 /* module initialisation */
271 static NTSTATUS
auth_init_sam_ignoredomain(struct auth_context
*auth_context
, const char *param
, auth_methods
**auth_method
)
273 if (!make_auth_methods(auth_context
, auth_method
)) {
274 return NT_STATUS_NO_MEMORY
;
277 (*auth_method
)->auth
= check_sam_security
;
278 (*auth_method
)->name
= "sam_ignoredomain";
283 /****************************************************************************
284 Check SAM security (above) but with a few extra checks.
285 ****************************************************************************/
287 static NTSTATUS
check_samstrict_security(const struct auth_context
*auth_context
,
288 void *my_private_data
,
290 const auth_usersupplied_info
*user_info
,
291 auth_serversupplied_info
**server_info
)
293 BOOL is_local_name
, is_my_domain
;
295 if (!user_info
|| !auth_context
) {
296 return NT_STATUS_LOGON_FAILURE
;
299 is_local_name
= is_myname(user_info
->domain
.str
);
300 is_my_domain
= strequal(user_info
->domain
.str
, lp_workgroup());
302 /* check whether or not we service this domain/workgroup name */
304 switch ( lp_server_role() ) {
305 case ROLE_STANDALONE
:
306 case ROLE_DOMAIN_MEMBER
:
307 if ( !is_local_name
) {
308 DEBUG(6,("check_samstrict_security: %s is not one of my local names (%s)\n",
309 user_info
->domain
.str
, (lp_server_role() == ROLE_DOMAIN_MEMBER
310 ? "ROLE_DOMAIN_MEMBER" : "ROLE_STANDALONE") ));
311 return NT_STATUS_NOT_IMPLEMENTED
;
313 case ROLE_DOMAIN_PDC
:
314 case ROLE_DOMAIN_BDC
:
315 if ( !is_local_name
&& !is_my_domain
) {
316 DEBUG(6,("check_samstrict_security: %s is not one of my local names or domain name (DC)\n",
317 user_info
->domain
.str
));
318 return NT_STATUS_NOT_IMPLEMENTED
;
320 default: /* name is ok */
324 return check_sam_security(auth_context
, my_private_data
, mem_ctx
, user_info
, server_info
);
327 /* module initialisation */
328 static NTSTATUS
auth_init_sam(struct auth_context
*auth_context
, const char *param
, auth_methods
**auth_method
)
330 if (!make_auth_methods(auth_context
, auth_method
)) {
331 return NT_STATUS_NO_MEMORY
;
334 (*auth_method
)->auth
= check_samstrict_security
;
335 (*auth_method
)->name
= "sam";
339 NTSTATUS
auth_sam_init(void)
341 smb_register_auth(AUTH_INTERFACE_VERSION
, "sam", auth_init_sam
);
342 smb_register_auth(AUTH_INTERFACE_VERSION
, "sam_ignoredomain", auth_init_sam_ignoredomain
);