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 "util/util_ldb.h"
27 #include "dsdb/samdb/samdb.h"
28 #include "libcli/security/security.h"
29 #include "libcli/ldap/ldap.h"
30 #include "librpc/gen_ndr/ndr_netlogon.h"
31 #include "param/param.h"
33 const char *user_attrs[] = {
34 /* required for the krb5 kdc */
38 "servicePrincipalName",
39 "msDS-KeyVersionNumber",
40 "supplementalCredentials",
53 /* check 'allowed workstations' */
56 /* required for server_info, not access control: */
71 const char *domain_ref_attrs[] = {"nETBIOSName", "nCName",
72 "dnsRoot", "objectClass", NULL};
74 /****************************************************************************
75 Check if a user is allowed to logon at this time. Note this is the
76 servers local time, as logon hours are just specified as a weekly
78 ****************************************************************************/
80 static bool logon_hours_ok(struct ldb_message *msg, const char *name_for_logs)
82 /* In logon hours first bit is Sunday from 12AM to 1AM */
83 const struct ldb_val *hours;
87 uint8_t bitmask, bitpos;
89 hours = ldb_msg_find_ldb_val(msg, "logonHours");
91 DEBUG(5,("logon_hours_ok: No hours restrictions for user %s\n", name_for_logs));
95 if (hours->length != 168/8) {
96 DEBUG(5,("logon_hours_ok: malformed logon hours restrictions for user %s\n", name_for_logs));
100 lasttime = time(NULL);
101 utctime = gmtime(&lasttime);
103 DEBUG(1, ("logon_hours_ok: failed to get gmtime. Failing logon for user %s\n",
108 /* find the corresponding byte and bit */
109 bitpos = (utctime->tm_wday * 24 + utctime->tm_hour) % 168;
110 bitmask = 1 << (bitpos % 8);
112 if (! (hours->data[bitpos/8] & bitmask)) {
113 struct tm *t = localtime(&lasttime);
115 asct = "INVALID TIME";
119 asct = "INVALID TIME";
123 DEBUG(1, ("logon_hours_ok: Account for user %s not allowed to "
124 "logon at this time (%s).\n",
125 name_for_logs, asct ));
129 asct = asctime(utctime);
130 DEBUG(5,("logon_hours_ok: user %s allowed to logon at this time (%s)\n",
131 name_for_logs, asct ? asct : "UNKNOWN TIME" ));
136 /****************************************************************************
137 Do a specific test for a SAM_ACCOUNT being vaild for this connection
138 (ie not disabled, expired and the like).
139 ****************************************************************************/
140 _PUBLIC_ NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
141 struct ldb_context *sam_ctx,
142 uint32_t logon_parameters,
143 struct ldb_message *msg,
144 struct ldb_message *msg_domain_ref,
145 const char *logon_workstation,
146 const char *name_for_logs)
149 const char *workstation_list;
151 NTTIME must_change_time;
152 NTTIME last_set_time;
154 struct ldb_dn *domain_dn = samdb_result_dn(sam_ctx, mem_ctx, msg_domain_ref, "nCName", ldb_dn_new(mem_ctx, sam_ctx, NULL));
157 DEBUG(4,("authsam_account_ok: Checking SMB password for user %s\n", name_for_logs));
159 acct_flags = samdb_result_acct_flags(msg, "userAccountControl");
161 acct_expiry = samdb_result_nttime(msg, "accountExpires", 0);
162 must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
164 last_set_time = samdb_result_nttime(msg, "pwdLastSet", 0);
166 workstation_list = samdb_result_string(msg, "userWorkstations", NULL);
168 /* Quit if the account was disabled. */
169 if (acct_flags & ACB_DISABLED) {
170 DEBUG(1,("authsam_account_ok: Account for user '%s' was disabled.\n", name_for_logs));
171 return NT_STATUS_ACCOUNT_DISABLED;
174 /* Quit if the account was locked out. */
175 if (acct_flags & ACB_AUTOLOCK) {
176 DEBUG(1,("authsam_account_ok: Account for user %s was locked out.\n", name_for_logs));
177 return NT_STATUS_ACCOUNT_LOCKED_OUT;
180 /* Test account expire time */
181 unix_to_nt_time(&now, time(NULL));
182 if (now > acct_expiry) {
183 DEBUG(1,("authsam_account_ok: Account for user '%s' has expired.\n", name_for_logs));
184 DEBUG(3,("authsam_account_ok: Account expired at '%s'.\n",
185 nt_time_string(mem_ctx, acct_expiry)));
186 return NT_STATUS_ACCOUNT_EXPIRED;
189 if (!(acct_flags & ACB_PWNOEXP)) {
190 /* check for immediate expiry "must change at next logon" */
191 if (must_change_time == 0 && last_set_time != 0) {
192 DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n",
194 return NT_STATUS_PASSWORD_MUST_CHANGE;
197 /* check for expired password */
198 if ((must_change_time != 0) && (must_change_time < now)) {
199 DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n",
201 DEBUG(1,("sam_account_ok: Password expired at '%s' unix time.\n",
202 nt_time_string(mem_ctx, must_change_time)));
203 return NT_STATUS_PASSWORD_EXPIRED;
207 /* Test workstation. Workstation list is comma separated. */
208 if (logon_workstation && workstation_list && *workstation_list) {
209 bool invalid_ws = true;
211 const char **workstations = str_list_make(mem_ctx, workstation_list, ",");
213 for (i = 0; workstations && workstations[i]; i++) {
214 DEBUG(10,("sam_account_ok: checking for workstation match '%s' and '%s'\n",
215 workstations[i], logon_workstation));
217 if (strequal(workstations[i], logon_workstation)) {
223 talloc_free(workstations);
226 return NT_STATUS_INVALID_WORKSTATION;
230 if (!logon_hours_ok(msg, name_for_logs)) {
231 return NT_STATUS_INVALID_LOGON_HOURS;
234 if (acct_flags & ACB_DOMTRUST) {
235 DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", name_for_logs));
236 return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
239 if (!(logon_parameters & MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT)) {
240 if (acct_flags & ACB_SVRTRUST) {
241 DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", name_for_logs));
242 return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
245 if (!(logon_parameters & MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT)) {
246 if (acct_flags & ACB_WSTRUST) {
247 DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", name_for_logs));
248 return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
255 _PUBLIC_ NTSTATUS authsam_make_server_info(TALLOC_CTX *mem_ctx, struct ldb_context *sam_ctx,
256 const char *netbios_name,
257 struct ldb_message *msg,
258 struct ldb_message *msg_domain_ref,
259 DATA_BLOB user_sess_key, DATA_BLOB lm_sess_key,
260 struct auth_serversupplied_info **_server_info)
262 struct auth_serversupplied_info *server_info;
263 struct ldb_message **group_msgs;
265 const char *group_attrs[3] = { "sAMAccountType", "objectSid", NULL };
266 /* find list of sids */
267 struct dom_sid **groupSIDs = NULL;
268 struct dom_sid *account_sid;
269 struct dom_sid *primary_group_sid;
271 struct ldb_dn *ncname;
274 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
276 group_ret = gendb_search(sam_ctx,
277 tmp_ctx, NULL, &group_msgs, group_attrs,
278 "(&(member=%s)(sAMAccountType=*))",
279 ldb_dn_get_linearized(msg->dn));
280 if (group_ret == -1) {
281 talloc_free(tmp_ctx);
282 return NT_STATUS_INTERNAL_DB_CORRUPTION;
285 server_info = talloc(mem_ctx, struct auth_serversupplied_info);
286 NT_STATUS_HAVE_NO_MEMORY(server_info);
289 groupSIDs = talloc_array(server_info, struct dom_sid *, group_ret);
290 NT_STATUS_HAVE_NO_MEMORY(groupSIDs);
293 /* Need to unroll some nested groups, but not aliases */
294 for (i = 0; i < group_ret; i++) {
295 groupSIDs[i] = samdb_result_dom_sid(groupSIDs,
296 group_msgs[i], "objectSid");
297 NT_STATUS_HAVE_NO_MEMORY(groupSIDs[i]);
300 talloc_free(tmp_ctx);
302 account_sid = samdb_result_dom_sid(server_info, msg, "objectSid");
303 NT_STATUS_HAVE_NO_MEMORY(account_sid);
305 primary_group_sid = dom_sid_dup(server_info, account_sid);
306 NT_STATUS_HAVE_NO_MEMORY(primary_group_sid);
308 rid = samdb_result_uint(msg, "primaryGroupID", ~0);
311 primary_group_sid = groupSIDs[0];
313 primary_group_sid = NULL;
316 primary_group_sid->sub_auths[primary_group_sid->num_auths-1] = rid;
319 server_info->account_sid = account_sid;
320 server_info->primary_group_sid = primary_group_sid;
322 server_info->n_domain_groups = group_ret;
323 server_info->domain_groups = groupSIDs;
325 server_info->account_name = talloc_steal(server_info, samdb_result_string(msg, "sAMAccountName", NULL));
327 server_info->domain_name = talloc_steal(server_info, samdb_result_string(msg_domain_ref, "nETBIOSName", NULL));
329 str = samdb_result_string(msg, "displayName", "");
330 server_info->full_name = talloc_strdup(server_info, str);
331 NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
333 str = samdb_result_string(msg, "scriptPath", "");
334 server_info->logon_script = talloc_strdup(server_info, str);
335 NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
337 str = samdb_result_string(msg, "profilePath", "");
338 server_info->profile_path = talloc_strdup(server_info, str);
339 NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
341 str = samdb_result_string(msg, "homeDirectory", "");
342 server_info->home_directory = talloc_strdup(server_info, str);
343 NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
345 str = samdb_result_string(msg, "homeDrive", "");
346 server_info->home_drive = talloc_strdup(server_info, str);
347 NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
349 server_info->logon_server = talloc_strdup(server_info, netbios_name);
350 NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
352 server_info->last_logon = samdb_result_nttime(msg, "lastLogon", 0);
353 server_info->last_logoff = samdb_result_nttime(msg, "lastLogoff", 0);
354 server_info->acct_expiry = samdb_result_nttime(msg, "accountExpires", 0);
355 server_info->last_password_change = samdb_result_nttime(msg, "pwdLastSet", 0);
357 ncname = samdb_result_dn(sam_ctx, mem_ctx, msg_domain_ref, "nCName", NULL);
359 return NT_STATUS_INTERNAL_DB_CORRUPTION;
361 server_info->allow_password_change
362 = samdb_result_allow_password_change(sam_ctx, mem_ctx,
363 ncname, msg, "pwdLastSet");
364 server_info->force_password_change
365 = samdb_result_force_password_change(sam_ctx, mem_ctx,
368 server_info->logon_count = samdb_result_uint(msg, "logonCount", 0);
369 server_info->bad_password_count = samdb_result_uint(msg, "badPwdCount", 0);
371 server_info->acct_flags = samdb_result_acct_flags(msg, "userAccountControl");
373 server_info->user_session_key = user_sess_key;
374 server_info->lm_session_key = lm_sess_key;
376 server_info->authenticated = true;
378 *_server_info = server_info;
383 _PUBLIC_ NTSTATUS sam_get_results_principal(struct ldb_context *sam_ctx,
384 TALLOC_CTX *mem_ctx, const char *principal,
385 struct ldb_message ***msgs,
386 struct ldb_message ***msgs_domain_ref)
388 struct ldb_dn *user_dn, *domain_dn;
390 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
392 struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
395 return NT_STATUS_NO_MEMORY;
398 nt_status = crack_user_principal_name(sam_ctx, tmp_ctx, principal, &user_dn, &domain_dn);
399 if (!NT_STATUS_IS_OK(nt_status)) {
400 talloc_free(tmp_ctx);
404 /* grab domain info from the reference */
405 ret = gendb_search(sam_ctx, tmp_ctx, partitions_basedn, msgs_domain_ref, domain_ref_attrs,
406 "(ncName=%s)", ldb_dn_get_linearized(domain_dn));
409 talloc_free(tmp_ctx);
410 return NT_STATUS_INTERNAL_DB_CORRUPTION;
413 /* pull the user attributes */
414 ret = gendb_search_dn(sam_ctx, tmp_ctx, user_dn, msgs, user_attrs);
416 talloc_free(tmp_ctx);
417 return NT_STATUS_INTERNAL_DB_CORRUPTION;
419 talloc_steal(mem_ctx, *msgs);
420 talloc_steal(mem_ctx, *msgs_domain_ref);
421 talloc_free(tmp_ctx);
426 /* Used in the gensec_gssapi and gensec_krb5 server-side code, where the PAC isn't available */
427 NTSTATUS sam_get_server_info_principal(TALLOC_CTX *mem_ctx,
428 struct loadparm_context *lp_ctx,
429 const char *principal,
430 struct auth_serversupplied_info **server_info)
433 DATA_BLOB user_sess_key = data_blob(NULL, 0);
434 DATA_BLOB lm_sess_key = data_blob(NULL, 0);
436 struct ldb_message **msgs;
437 struct ldb_message **msgs_domain_ref;
438 struct ldb_context *sam_ctx;
440 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
442 return NT_STATUS_NO_MEMORY;
445 sam_ctx = samdb_connect(tmp_ctx, lp_ctx, system_session(tmp_ctx, lp_ctx));
446 if (sam_ctx == NULL) {
447 talloc_free(tmp_ctx);
448 return NT_STATUS_INVALID_SYSTEM_SERVICE;
451 nt_status = sam_get_results_principal(sam_ctx, tmp_ctx, principal,
452 &msgs, &msgs_domain_ref);
453 if (!NT_STATUS_IS_OK(nt_status)) {
457 nt_status = authsam_make_server_info(tmp_ctx, sam_ctx, lp_netbios_name(lp_ctx),
458 msgs[0], msgs_domain_ref[0],
459 user_sess_key, lm_sess_key,
461 if (NT_STATUS_IS_OK(nt_status)) {
462 talloc_steal(mem_ctx, *server_info);
464 talloc_free(tmp_ctx);