2 Unix SMB/CIFS implementation.
3 Password and authentication handling
4 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2004
5 Copyright (C) Gerald Carter 2003
6 Copyright (C) Stefan Metzmacher 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "system/time.h"
24 #include "auth/auth.h"
26 #include "dsdb/samdb/samdb.h"
27 #include "libcli/security/security.h"
28 #include "libcli/ldap/ldap.h"
29 #include "librpc/gen_ndr/ndr_netlogon.h"
31 const char *user_attrs[] = {
32 /* required for the krb5 kdc */
36 "servicePrincipalName",
37 "msDS-KeyVersionNumber",
38 "supplementalCredentials",
51 /* check 'allowed workstations' */
54 /* required for server_info, not access control: */
69 const char *domain_ref_attrs[] = {"nETBIOSName", "nCName",
70 "dnsRoot", "objectClass", NULL};
73 /****************************************************************************
74 Do a specific test for a SAM_ACCOUNT being vaild for this connection
75 (ie not disabled, expired and the like).
76 ****************************************************************************/
77 _PUBLIC_ NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
78 struct ldb_context *sam_ctx,
79 uint32_t logon_parameters,
80 struct ldb_message *msg,
81 struct ldb_message *msg_domain_ref,
82 const char *logon_workstation,
83 const char *name_for_logs)
86 const char *workstation_list;
88 NTTIME must_change_time;
91 struct ldb_dn *domain_dn = samdb_result_dn(sam_ctx, mem_ctx, msg_domain_ref, "nCName", ldb_dn_new(mem_ctx, sam_ctx, NULL));
94 DEBUG(4,("authsam_account_ok: Checking SMB password for user %s\n", name_for_logs));
96 acct_flags = samdb_result_acct_flags(msg, "userAccountControl");
98 acct_expiry = samdb_result_nttime(msg, "accountExpires", 0);
99 must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
101 last_set_time = samdb_result_nttime(msg, "pwdLastSet", 0);
103 workstation_list = samdb_result_string(msg, "userWorkstations", NULL);
105 /* Quit if the account was disabled. */
106 if (acct_flags & ACB_DISABLED) {
107 DEBUG(1,("authsam_account_ok: Account for user '%s' was disabled.\n", name_for_logs));
108 return NT_STATUS_ACCOUNT_DISABLED;
111 /* Quit if the account was locked out. */
112 if (acct_flags & ACB_AUTOLOCK) {
113 DEBUG(1,("authsam_account_ok: Account for user %s was locked out.\n", name_for_logs));
114 return NT_STATUS_ACCOUNT_LOCKED_OUT;
117 /* Test account expire time */
118 unix_to_nt_time(&now, time(NULL));
119 if (now > acct_expiry) {
120 DEBUG(1,("authsam_account_ok: Account for user '%s' has expired.\n", name_for_logs));
121 DEBUG(3,("authsam_account_ok: Account expired at '%s'.\n",
122 nt_time_string(mem_ctx, acct_expiry)));
123 return NT_STATUS_ACCOUNT_EXPIRED;
126 if (!(acct_flags & ACB_PWNOEXP)) {
127 /* check for immediate expiry "must change at next logon" */
128 if (must_change_time == 0 && last_set_time != 0) {
129 DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n",
131 return NT_STATUS_PASSWORD_MUST_CHANGE;
134 /* check for expired password */
135 if ((must_change_time != 0) && (must_change_time < now)) {
136 DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n",
138 DEBUG(1,("sam_account_ok: Password expired at '%s' unix time.\n",
139 nt_time_string(mem_ctx, must_change_time)));
140 return NT_STATUS_PASSWORD_EXPIRED;
144 /* Test workstation. Workstation list is comma separated. */
145 if (logon_workstation && workstation_list && *workstation_list) {
146 BOOL invalid_ws = True;
148 const char **workstations = str_list_make(mem_ctx, workstation_list, ",");
150 for (i = 0; workstations && workstations[i]; i++) {
151 DEBUG(10,("sam_account_ok: checking for workstation match '%s' and '%s'\n",
152 workstations[i], logon_workstation));
154 if (strequal(workstations[i], logon_workstation) == 0) {
160 talloc_free(workstations);
163 return NT_STATUS_INVALID_WORKSTATION;
167 if (acct_flags & ACB_DOMTRUST) {
168 DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", name_for_logs));
169 return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
172 if (!(logon_parameters & MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT)) {
173 if (acct_flags & ACB_SVRTRUST) {
174 DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", name_for_logs));
175 return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
178 if (!(logon_parameters & MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT)) {
179 if (acct_flags & ACB_WSTRUST) {
180 DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", name_for_logs));
181 return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
188 _PUBLIC_ NTSTATUS authsam_make_server_info(TALLOC_CTX *mem_ctx, struct ldb_context *sam_ctx,
189 struct ldb_message *msg,
190 struct ldb_message *msg_domain_ref,
191 DATA_BLOB user_sess_key, DATA_BLOB lm_sess_key,
192 struct auth_serversupplied_info **_server_info)
194 struct auth_serversupplied_info *server_info;
195 struct ldb_message **group_msgs;
197 const char *group_attrs[3] = { "sAMAccountType", "objectSid", NULL };
198 /* find list of sids */
199 struct dom_sid **groupSIDs = NULL;
200 struct dom_sid *account_sid;
201 struct dom_sid *primary_group_sid;
203 struct ldb_dn *ncname;
206 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
208 group_ret = gendb_search(sam_ctx,
209 tmp_ctx, NULL, &group_msgs, group_attrs,
210 "(&(member=%s)(sAMAccountType=*))",
211 ldb_dn_get_linearized(msg->dn));
212 if (group_ret == -1) {
213 talloc_free(tmp_ctx);
214 return NT_STATUS_INTERNAL_DB_CORRUPTION;
217 server_info = talloc(mem_ctx, struct auth_serversupplied_info);
218 NT_STATUS_HAVE_NO_MEMORY(server_info);
221 groupSIDs = talloc_array(server_info, struct dom_sid *, group_ret);
222 NT_STATUS_HAVE_NO_MEMORY(groupSIDs);
225 /* Need to unroll some nested groups, but not aliases */
226 for (i = 0; i < group_ret; i++) {
227 groupSIDs[i] = samdb_result_dom_sid(groupSIDs,
228 group_msgs[i], "objectSid");
229 NT_STATUS_HAVE_NO_MEMORY(groupSIDs[i]);
232 talloc_free(tmp_ctx);
234 account_sid = samdb_result_dom_sid(server_info, msg, "objectSid");
235 NT_STATUS_HAVE_NO_MEMORY(account_sid);
237 primary_group_sid = dom_sid_dup(server_info, account_sid);
238 NT_STATUS_HAVE_NO_MEMORY(primary_group_sid);
240 rid = samdb_result_uint(msg, "primaryGroupID", ~0);
243 primary_group_sid = groupSIDs[0];
245 primary_group_sid = NULL;
248 primary_group_sid->sub_auths[primary_group_sid->num_auths-1] = rid;
251 server_info->account_sid = account_sid;
252 server_info->primary_group_sid = primary_group_sid;
254 server_info->n_domain_groups = group_ret;
255 server_info->domain_groups = groupSIDs;
257 server_info->account_name = talloc_steal(server_info, samdb_result_string(msg, "sAMAccountName", NULL));
259 server_info->domain_name = talloc_steal(server_info, samdb_result_string(msg_domain_ref, "nETBIOSName", NULL));
261 str = samdb_result_string(msg, "displayName", "");
262 server_info->full_name = talloc_strdup(server_info, str);
263 NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
265 str = samdb_result_string(msg, "scriptPath", "");
266 server_info->logon_script = talloc_strdup(server_info, str);
267 NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
269 str = samdb_result_string(msg, "profilePath", "");
270 server_info->profile_path = talloc_strdup(server_info, str);
271 NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
273 str = samdb_result_string(msg, "homeDirectory", "");
274 server_info->home_directory = talloc_strdup(server_info, str);
275 NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
277 str = samdb_result_string(msg, "homeDrive", "");
278 server_info->home_drive = talloc_strdup(server_info, str);
279 NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
281 server_info->logon_server = talloc_strdup(server_info, lp_netbios_name());
282 NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
284 server_info->last_logon = samdb_result_nttime(msg, "lastLogon", 0);
285 server_info->last_logoff = samdb_result_nttime(msg, "lastLogoff", 0);
286 server_info->acct_expiry = samdb_result_nttime(msg, "accountExpires", 0);
287 server_info->last_password_change = samdb_result_nttime(msg, "pwdLastSet", 0);
289 ncname = samdb_result_dn(sam_ctx, mem_ctx, msg_domain_ref, "nCName", NULL);
291 return NT_STATUS_INTERNAL_DB_CORRUPTION;
293 server_info->allow_password_change
294 = samdb_result_allow_password_change(sam_ctx, mem_ctx,
295 ncname, msg, "pwdLastSet");
296 server_info->force_password_change
297 = samdb_result_force_password_change(sam_ctx, mem_ctx,
300 server_info->logon_count = samdb_result_uint(msg, "logonCount", 0);
301 server_info->bad_password_count = samdb_result_uint(msg, "badPwdCount", 0);
303 server_info->acct_flags = samdb_result_acct_flags(msg, "userAccountControl");
305 server_info->user_session_key = user_sess_key;
306 server_info->lm_session_key = lm_sess_key;
308 server_info->authenticated = True;
310 *_server_info = server_info;
315 _PUBLIC_ NTSTATUS sam_get_results_principal(struct ldb_context *sam_ctx,
316 TALLOC_CTX *mem_ctx, const char *principal,
317 struct ldb_message ***msgs,
318 struct ldb_message ***msgs_domain_ref)
320 struct ldb_dn *user_dn, *domain_dn;
322 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
324 struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
327 return NT_STATUS_NO_MEMORY;
330 nt_status = crack_user_principal_name(sam_ctx, tmp_ctx, principal, &user_dn, &domain_dn);
331 if (!NT_STATUS_IS_OK(nt_status)) {
332 talloc_free(tmp_ctx);
336 /* grab domain info from the reference */
337 ret = gendb_search(sam_ctx, tmp_ctx, partitions_basedn, msgs_domain_ref, domain_ref_attrs,
338 "(ncName=%s)", ldb_dn_get_linearized(domain_dn));
341 talloc_free(tmp_ctx);
342 return NT_STATUS_INTERNAL_DB_CORRUPTION;
345 /* pull the user attributes */
346 ret = gendb_search_dn(sam_ctx, tmp_ctx, user_dn, msgs, user_attrs);
348 talloc_free(tmp_ctx);
349 return NT_STATUS_INTERNAL_DB_CORRUPTION;
351 talloc_steal(mem_ctx, *msgs);
352 talloc_steal(mem_ctx, *msgs_domain_ref);
353 talloc_free(tmp_ctx);
358 /* Used in the gensec_gssapi and gensec_krb5 server-side code, where the PAC isn't available */
359 NTSTATUS sam_get_server_info_principal(TALLOC_CTX *mem_ctx, const char *principal,
360 struct auth_serversupplied_info **server_info)
363 DATA_BLOB user_sess_key = data_blob(NULL, 0);
364 DATA_BLOB lm_sess_key = data_blob(NULL, 0);
366 struct ldb_message **msgs;
367 struct ldb_message **msgs_domain_ref;
368 struct ldb_context *sam_ctx;
370 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
372 return NT_STATUS_NO_MEMORY;
375 sam_ctx = samdb_connect(tmp_ctx, system_session(tmp_ctx));
376 if (sam_ctx == NULL) {
377 talloc_free(tmp_ctx);
378 return NT_STATUS_INVALID_SYSTEM_SERVICE;
381 nt_status = sam_get_results_principal(sam_ctx, tmp_ctx, principal,
382 &msgs, &msgs_domain_ref);
383 if (!NT_STATUS_IS_OK(nt_status)) {
387 nt_status = authsam_make_server_info(tmp_ctx, sam_ctx, msgs[0], msgs_domain_ref[0],
388 user_sess_key, lm_sess_key,
390 if (NT_STATUS_IS_OK(nt_status)) {
391 talloc_steal(mem_ctx, *server_info);
393 talloc_free(tmp_ctx);