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 "../lib/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"
32 #include "auth/auth_sam.h"
34 const char *user_attrs[] = {
35 /* required for the krb5 kdc */
39 "servicePrincipalName",
40 "msDS-KeyVersionNumber",
41 "supplementalCredentials",
54 /* check 'allowed workstations' */
57 /* required for server_info, not access control: */
72 const char *domain_ref_attrs[] = {"nETBIOSName", "nCName",
73 "dnsRoot", "objectClass", NULL};
75 /****************************************************************************
76 Check if a user is allowed to logon at this time. Note this is the
77 servers local time, as logon hours are just specified as a weekly
79 ****************************************************************************/
81 static bool logon_hours_ok(struct ldb_message *msg, const char *name_for_logs)
83 /* In logon hours first bit is Sunday from 12AM to 1AM */
84 const struct ldb_val *hours;
88 uint8_t bitmask, bitpos;
90 hours = ldb_msg_find_ldb_val(msg, "logonHours");
92 DEBUG(5,("logon_hours_ok: No hours restrictions for user %s\n", name_for_logs));
96 if (hours->length != 168/8) {
97 DEBUG(5,("logon_hours_ok: malformed logon hours restrictions for user %s\n", name_for_logs));
101 lasttime = time(NULL);
102 utctime = gmtime(&lasttime);
104 DEBUG(1, ("logon_hours_ok: failed to get gmtime. Failing logon for user %s\n",
109 /* find the corresponding byte and bit */
110 bitpos = (utctime->tm_wday * 24 + utctime->tm_hour) % 168;
111 bitmask = 1 << (bitpos % 8);
113 if (! (hours->data[bitpos/8] & bitmask)) {
114 struct tm *t = localtime(&lasttime);
116 asct = "INVALID TIME";
120 asct = "INVALID TIME";
124 DEBUG(1, ("logon_hours_ok: Account for user %s not allowed to "
125 "logon at this time (%s).\n",
126 name_for_logs, asct ));
130 asct = asctime(utctime);
131 DEBUG(5,("logon_hours_ok: user %s allowed to logon at this time (%s)\n",
132 name_for_logs, asct ? asct : "UNKNOWN TIME" ));
137 /****************************************************************************
138 Do a specific test for a SAM_ACCOUNT being vaild for this connection
139 (ie not disabled, expired and the like).
140 ****************************************************************************/
141 _PUBLIC_ NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
142 struct ldb_context *sam_ctx,
143 uint32_t logon_parameters,
144 struct ldb_message *msg,
145 struct ldb_message *msg_domain_ref,
146 const char *logon_workstation,
147 const char *name_for_logs)
150 const char *workstation_list;
152 NTTIME must_change_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(sam_ctx, mem_ctx, msg, domain_dn);
161 acct_expiry = samdb_result_account_expires(msg);
163 /* Check for when we must change this password, taking the
164 * userAccountControl flags into account */
165 must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
168 workstation_list = samdb_result_string(msg, "userWorkstations", NULL);
170 /* Quit if the account was disabled. */
171 if (acct_flags & ACB_DISABLED) {
172 DEBUG(1,("authsam_account_ok: Account for user '%s' was disabled.\n", name_for_logs));
173 return NT_STATUS_ACCOUNT_DISABLED;
176 /* Quit if the account was locked out. */
177 if (acct_flags & ACB_AUTOLOCK) {
178 DEBUG(1,("authsam_account_ok: Account for user %s was locked out.\n", name_for_logs));
179 return NT_STATUS_ACCOUNT_LOCKED_OUT;
182 /* Test account expire time */
183 unix_to_nt_time(&now, time(NULL));
184 if (now > acct_expiry) {
185 DEBUG(1,("authsam_account_ok: Account for user '%s' has expired.\n", name_for_logs));
186 DEBUG(3,("authsam_account_ok: Account expired at '%s'.\n",
187 nt_time_string(mem_ctx, acct_expiry)));
188 return NT_STATUS_ACCOUNT_EXPIRED;
191 /* check for immediate expiry "must change at next logon" */
192 if (must_change_time == 0) {
193 DEBUG(1,("sam_account_ok: Account for user '%s' password must change!.\n",
195 return NT_STATUS_PASSWORD_MUST_CHANGE;
198 /* check for expired password */
199 if (must_change_time < now) {
200 DEBUG(1,("sam_account_ok: Account for user '%s' password expired!.\n",
202 DEBUG(1,("sam_account_ok: Password expired at '%s' unix time.\n",
203 nt_time_string(mem_ctx, must_change_time)));
204 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 = (const char **)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;
270 struct ldb_dn *domain_dn;
272 struct ldb_dn *ncname;
275 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
277 group_ret = gendb_search(sam_ctx,
278 tmp_ctx, NULL, &group_msgs, group_attrs,
279 "(&(member=%s)(sAMAccountType=*))",
280 ldb_dn_get_linearized(msg->dn));
281 if (group_ret == -1) {
282 talloc_free(tmp_ctx);
283 return NT_STATUS_INTERNAL_DB_CORRUPTION;
286 server_info = talloc(mem_ctx, struct auth_serversupplied_info);
287 NT_STATUS_HAVE_NO_MEMORY(server_info);
290 groupSIDs = talloc_array(server_info, struct dom_sid *, group_ret);
291 NT_STATUS_HAVE_NO_MEMORY(groupSIDs);
294 /* Need to unroll some nested groups, but not aliases */
295 for (i = 0; i < group_ret; i++) {
296 groupSIDs[i] = samdb_result_dom_sid(groupSIDs,
297 group_msgs[i], "objectSid");
298 NT_STATUS_HAVE_NO_MEMORY(groupSIDs[i]);
301 talloc_free(tmp_ctx);
303 account_sid = samdb_result_dom_sid(server_info, msg, "objectSid");
304 NT_STATUS_HAVE_NO_MEMORY(account_sid);
306 primary_group_sid = dom_sid_dup(server_info, account_sid);
307 NT_STATUS_HAVE_NO_MEMORY(primary_group_sid);
309 rid = samdb_result_uint(msg, "primaryGroupID", ~0);
312 primary_group_sid = groupSIDs[0];
314 primary_group_sid = NULL;
317 primary_group_sid->sub_auths[primary_group_sid->num_auths-1] = rid;
320 server_info->account_sid = account_sid;
321 server_info->primary_group_sid = primary_group_sid;
323 server_info->n_domain_groups = group_ret;
324 server_info->domain_groups = groupSIDs;
326 server_info->account_name = talloc_steal(server_info, samdb_result_string(msg, "sAMAccountName", NULL));
328 server_info->domain_name = talloc_steal(server_info, samdb_result_string(msg_domain_ref, "nETBIOSName", NULL));
330 str = samdb_result_string(msg, "displayName", "");
331 server_info->full_name = talloc_strdup(server_info, str);
332 NT_STATUS_HAVE_NO_MEMORY(server_info->full_name);
334 str = samdb_result_string(msg, "scriptPath", "");
335 server_info->logon_script = talloc_strdup(server_info, str);
336 NT_STATUS_HAVE_NO_MEMORY(server_info->logon_script);
338 str = samdb_result_string(msg, "profilePath", "");
339 server_info->profile_path = talloc_strdup(server_info, str);
340 NT_STATUS_HAVE_NO_MEMORY(server_info->profile_path);
342 str = samdb_result_string(msg, "homeDirectory", "");
343 server_info->home_directory = talloc_strdup(server_info, str);
344 NT_STATUS_HAVE_NO_MEMORY(server_info->home_directory);
346 str = samdb_result_string(msg, "homeDrive", "");
347 server_info->home_drive = talloc_strdup(server_info, str);
348 NT_STATUS_HAVE_NO_MEMORY(server_info->home_drive);
350 server_info->logon_server = talloc_strdup(server_info, netbios_name);
351 NT_STATUS_HAVE_NO_MEMORY(server_info->logon_server);
353 server_info->last_logon = samdb_result_nttime(msg, "lastLogon", 0);
354 server_info->last_logoff = samdb_result_nttime(msg, "lastLogoff", 0);
355 server_info->acct_expiry = samdb_result_account_expires(msg);
356 server_info->last_password_change = samdb_result_nttime(msg, "pwdLastSet", 0);
358 ncname = samdb_result_dn(sam_ctx, mem_ctx, msg_domain_ref, "nCName", NULL);
360 return NT_STATUS_INTERNAL_DB_CORRUPTION;
362 server_info->allow_password_change
363 = samdb_result_allow_password_change(sam_ctx, mem_ctx,
364 ncname, msg, "pwdLastSet");
365 server_info->force_password_change
366 = samdb_result_force_password_change(sam_ctx, mem_ctx,
369 server_info->logon_count = samdb_result_uint(msg, "logonCount", 0);
370 server_info->bad_password_count = samdb_result_uint(msg, "badPwdCount", 0);
372 domain_dn = samdb_result_dn(sam_ctx, mem_ctx, msg_domain_ref, "nCName", NULL);
374 server_info->acct_flags = samdb_result_acct_flags(sam_ctx, mem_ctx,
377 server_info->user_session_key = user_sess_key;
378 server_info->lm_session_key = lm_sess_key;
380 server_info->authenticated = true;
382 *_server_info = server_info;
387 NTSTATUS sam_get_results_principal(struct ldb_context *sam_ctx,
388 TALLOC_CTX *mem_ctx, const char *principal,
389 struct ldb_message ***msgs,
390 struct ldb_message ***msgs_domain_ref)
392 struct ldb_dn *user_dn, *domain_dn;
394 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
396 struct ldb_dn *partitions_basedn = samdb_partitions_dn(sam_ctx, mem_ctx);
399 return NT_STATUS_NO_MEMORY;
402 nt_status = crack_user_principal_name(sam_ctx, tmp_ctx, principal, &user_dn, &domain_dn);
403 if (!NT_STATUS_IS_OK(nt_status)) {
404 talloc_free(tmp_ctx);
408 /* grab domain info from the reference */
409 ret = gendb_search(sam_ctx, tmp_ctx, partitions_basedn, msgs_domain_ref, domain_ref_attrs,
410 "(ncName=%s)", ldb_dn_get_linearized(domain_dn));
413 talloc_free(tmp_ctx);
414 return NT_STATUS_INTERNAL_DB_CORRUPTION;
417 /* pull the user attributes */
418 ret = gendb_search_dn(sam_ctx, tmp_ctx, user_dn, msgs, user_attrs);
420 talloc_free(tmp_ctx);
421 return NT_STATUS_INTERNAL_DB_CORRUPTION;
423 talloc_steal(mem_ctx, *msgs);
424 talloc_steal(mem_ctx, *msgs_domain_ref);
425 talloc_free(tmp_ctx);
430 /* Used in the gensec_gssapi and gensec_krb5 server-side code, where the PAC isn't available */
431 NTSTATUS sam_get_server_info_principal(TALLOC_CTX *mem_ctx,
432 struct event_context *event_ctx,
433 struct loadparm_context *lp_ctx,
434 const char *principal,
435 struct auth_serversupplied_info **server_info)
438 DATA_BLOB user_sess_key = data_blob(NULL, 0);
439 DATA_BLOB lm_sess_key = data_blob(NULL, 0);
441 struct ldb_message **msgs;
442 struct ldb_message **msgs_domain_ref;
443 struct ldb_context *sam_ctx;
445 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
447 return NT_STATUS_NO_MEMORY;
450 sam_ctx = samdb_connect(tmp_ctx, event_ctx, lp_ctx, system_session(tmp_ctx, lp_ctx));
451 if (sam_ctx == NULL) {
452 talloc_free(tmp_ctx);
453 return NT_STATUS_INVALID_SYSTEM_SERVICE;
456 nt_status = sam_get_results_principal(sam_ctx, tmp_ctx, principal,
457 &msgs, &msgs_domain_ref);
458 if (!NT_STATUS_IS_OK(nt_status)) {
462 nt_status = authsam_make_server_info(tmp_ctx, sam_ctx, lp_netbios_name(lp_ctx),
463 msgs[0], msgs_domain_ref[0],
464 user_sess_key, lm_sess_key,
466 if (NT_STATUS_IS_OK(nt_status)) {
467 talloc_steal(mem_ctx, *server_info);
469 talloc_free(tmp_ctx);