1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
25 */
26
27 /*
28 * NETR SamLogon and SamLogoff RPC client functions.
29 */
30
31 #include <stdio.h>
32 #include <strings.h>
33 #include <stdlib.h>
34 #include <time.h>
35 #include <alloca.h>
36 #include <unistd.h>
37 #include <netdb.h>
38 #include <thread.h>
39
40 #include <smbsrv/libsmb.h>
41 #include <smbsrv/libmlrpc.h>
42 #include <smbsrv/libmlsvc.h>
43 #include <smbsrv/ndl/netlogon.ndl>
44 #include <smbsrv/netrauth.h>
45 #include <smbsrv/smbinfo.h>
46 #include <smbsrv/smb_token.h>
47 #include <mlsvc.h>
48
49 #define NETLOGON_ATTEMPTS 2
50
51 static uint32_t netlogon_logon(smb_logon_t *, smb_token_t *);
52 static uint32_t netr_server_samlogon(mlsvc_handle_t *, netr_info_t *, char *,
53 smb_logon_t *, smb_token_t *);
54 static void netr_invalidate_chain(void);
55 static void netr_interactive_samlogon(netr_info_t *, smb_logon_t *,
56 struct netr_logon_info1 *);
57 static void netr_network_samlogon(ndr_heap_t *, netr_info_t *,
58 smb_logon_t *, struct netr_logon_info2 *);
59 static void netr_setup_identity(ndr_heap_t *, smb_logon_t *,
60 netr_logon_id_t *);
61 static boolean_t netr_isadmin(struct netr_validation_info3 *);
62 static uint32_t netr_setup_domain_groups(struct netr_validation_info3 *,
63 smb_ids_t *);
64 static uint32_t netr_setup_token_info3(struct netr_validation_info3 *,
65 smb_token_t *);
66 static uint32_t netr_setup_token_wingrps(struct netr_validation_info3 *,
67 smb_token_t *);
68
69 /*
70 * Shared with netr_auth.c
71 */
72 extern netr_info_t netr_global_info;
73
74 static mutex_t netlogon_mutex;
75 static cond_t netlogon_cv;
76 static boolean_t netlogon_busy = B_FALSE;
77 static boolean_t netlogon_abort = B_FALSE;
78
79 /*
80 * Helper for Kerberos authentication
81 */
82 uint32_t
83 smb_decode_krb5_pac(smb_token_t *token, char *data, uint_t len)
84 {
85 struct krb5_validation_info info;
86 ndr_buf_t *nbuf;
87 uint32_t status = NT_STATUS_NO_MEMORY;
88 int rc;
89
90 bzero(&info, sizeof (info));
91
92 /* Need to keep this until we're done with &info */
93 nbuf = ndr_buf_init(&TYPEINFO(netr_interface));
94 if (nbuf == NULL)
95 goto out;
96
97 rc = ndr_buf_decode(nbuf, NDR_PTYPE_PAC,
98 NETR_OPNUM_decode_krb5_pac, data, len, &info);
99 if (rc != NDR_DRC_OK) {
100 status = RPC_NT_PROTOCOL_ERROR;
101 goto out;
102 }
103
104 status = netr_setup_token_info3(&info.info3, token);
105
106 /* Deal with the "resource groups"? */
107
108
109 out:
110 if (nbuf != NULL)
111 ndr_buf_fini(nbuf);
112
113 return (status);
114 }
115
116 /*
117 * Code factored out of netr_setup_token()
118 */
119 static uint32_t
120 netr_setup_token_info3(struct netr_validation_info3 *info3,
121 smb_token_t *token)
122 {
123 smb_sid_t *domsid;
124
125 domsid = (smb_sid_t *)info3->LogonDomainId;
126
127 token->tkn_user.i_sid = smb_sid_splice(domsid,
128 info3->UserId);
129 if (token->tkn_user.i_sid == NULL)
130 goto errout;
131
132 token->tkn_primary_grp.i_sid = smb_sid_splice(domsid,
133 info3->PrimaryGroupId);
134 if (token->tkn_primary_grp.i_sid == NULL)
135 goto errout;
136
137 if (info3->EffectiveName.str) {
138 token->tkn_account_name =
139 strdup((char *)info3->EffectiveName.str);
140 if (token->tkn_account_name == NULL)
141 goto errout;
142 }
143
144 if (info3->LogonDomainName.str) {
145 token->tkn_domain_name =
146 strdup((char *)info3->LogonDomainName.str);
147 if (token->tkn_domain_name == NULL)
148 goto errout;
149 }
150
151 return (netr_setup_token_wingrps(info3, token));
152 errout:
153 return (NT_STATUS_INSUFF_SERVER_RESOURCES);
154 }
155
156 /*
157 * Abort impending domain logon requests.
158 */
159 void
160 smb_logon_abort(void)
161 {
162 (void) mutex_lock(&netlogon_mutex);
163 if (netlogon_busy && !netlogon_abort)
164 syslog(LOG_DEBUG, "logon abort");
165 netlogon_abort = B_TRUE;
166 (void) cond_broadcast(&netlogon_cv);
167 (void) mutex_unlock(&netlogon_mutex);
168 }
169
170 /*
171 * This is the entry point for authenticating domain users.
172 *
173 * If we are not going to attempt to authenticate the user,
174 * this function must return without updating the status.
175 *
176 * If the user is successfully authenticated, we build an
177 * access token and the status will be NT_STATUS_SUCCESS.
178 * Otherwise, the token contents are invalid.
179 */
180 void
181 smb_logon_domain(smb_logon_t *user_info, smb_token_t *token)
182 {
183 uint32_t status;
184 int i;
185
186 if (user_info->lg_secmode != SMB_SECMODE_DOMAIN)
187 return;
188
189 if (user_info->lg_domain_type == SMB_DOMAIN_LOCAL)
190 return;
191
192 for (i = 0; i < NETLOGON_ATTEMPTS; ++i) {
193 (void) mutex_lock(&netlogon_mutex);
194 while (netlogon_busy && !netlogon_abort)
195 (void) cond_wait(&netlogon_cv, &netlogon_mutex);
196
197 if (netlogon_abort) {
198 (void) mutex_unlock(&netlogon_mutex);
199 user_info->lg_status = NT_STATUS_REQUEST_ABORTED;
200 return;
201 }
202
203 netlogon_busy = B_TRUE;
204 (void) mutex_unlock(&netlogon_mutex);
205
206 status = netlogon_logon(user_info, token);
207
208 (void) mutex_lock(&netlogon_mutex);
209 netlogon_busy = B_FALSE;
210 if (netlogon_abort)
211 status = NT_STATUS_REQUEST_ABORTED;
212 (void) cond_signal(&netlogon_cv);
213 (void) mutex_unlock(&netlogon_mutex);
214
215 if (status != NT_STATUS_CANT_ACCESS_DOMAIN_INFO)
216 break;
217 }
218
219 if (status != NT_STATUS_SUCCESS)
220 syslog(LOG_INFO, "logon[%s\\%s]: %s", user_info->lg_e_domain,
221 user_info->lg_e_username, xlate_nt_status(status));
222
223 user_info->lg_status = status;
224 }
225
226 static uint32_t
227 netlogon_logon(smb_logon_t *user_info, smb_token_t *token)
228 {
229 char resource_domain[SMB_PI_MAX_DOMAIN];
230 char server[MAXHOSTNAMELEN];
231 mlsvc_handle_t netr_handle;
232 smb_domainex_t di;
233 uint32_t status;
234 int retries = 0;
235
236 (void) smb_getdomainname(resource_domain, SMB_PI_MAX_DOMAIN);
237
238 /* Avoid interfering with DC discovery. */
239 if (smb_ddiscover_wait() != 0 ||
240 !smb_domain_getinfo(&di)) {
241 netr_invalidate_chain();
242 return (NT_STATUS_CANT_ACCESS_DOMAIN_INFO);
243 }
244
245 do {
246 if (netr_open(di.d_dci.dc_name, di.d_primary.di_nbname,
247 &netr_handle) != 0)
248 return (NT_STATUS_OPEN_FAILED);
249
250 if (di.d_dci.dc_name[0] != '\0' &&
251 (*netr_global_info.server != '\0')) {
252 (void) snprintf(server, sizeof (server),
253 "\\\\%s", di.d_dci.dc_name);
254 if (strncasecmp(netr_global_info.server,
255 server, strlen(server)) != 0)
256 netr_invalidate_chain();
257 }
258
259 if ((netr_global_info.flags & NETR_FLG_VALID) == 0 ||
260 !smb_match_netlogon_seqnum()) {
261 status = netlogon_auth(di.d_dci.dc_name, &netr_handle,
262 NETR_FLG_NULL);
263
264 if (status != 0) {
265 (void) netr_close(&netr_handle);
266 return (NT_STATUS_LOGON_FAILURE);
267 }
268
269 netr_global_info.flags |= NETR_FLG_VALID;
270 }
271
272 status = netr_server_samlogon(&netr_handle,
273 &netr_global_info, di.d_dci.dc_name, user_info, token);
274
275 (void) netr_close(&netr_handle);
276 } while (status == NT_STATUS_INSUFFICIENT_LOGON_INFO && retries++ < 3);
277
278 if (retries >= 3)
279 status = NT_STATUS_LOGON_FAILURE;
280
281 return (status);
282 }
283
284 static uint32_t
285 netr_setup_token(struct netr_validation_info3 *info3, smb_logon_t *user_info,
286 netr_info_t *netr_info, smb_token_t *token)
287 {
288 char *username, *domain;
289 unsigned char rc4key[SMBAUTH_SESSION_KEY_SZ];
290 smb_sid_t *domsid;
291 uint32_t status;
292 char nbdomain[NETBIOS_NAME_SZ];
293
294 domsid = (smb_sid_t *)info3->LogonDomainId;
295
296 token->tkn_user.i_sid = smb_sid_splice(domsid, info3->UserId);
297 if (token->tkn_user.i_sid == NULL)
298 return (NT_STATUS_NO_MEMORY);
299
300 token->tkn_primary_grp.i_sid = smb_sid_splice(domsid,
301 info3->PrimaryGroupId);
302 if (token->tkn_primary_grp.i_sid == NULL)
303 return (NT_STATUS_NO_MEMORY);
304
305 username = (info3->EffectiveName.str)
306 ? (char *)info3->EffectiveName.str : user_info->lg_e_username;
307
308 if (info3->LogonDomainName.str) {
309 domain = (char *)info3->LogonDomainName.str;
310 } else if (*user_info->lg_e_domain != '\0') {
311 domain = user_info->lg_e_domain;
312 } else {
313 (void) smb_getdomainname(nbdomain, sizeof (nbdomain));
314 domain = nbdomain;
315 }
316
317 if (username)
318 token->tkn_account_name = strdup(username);
319 if (domain)
320 token->tkn_domain_name = strdup(domain);
321
322 if (token->tkn_account_name == NULL || token->tkn_domain_name == NULL)
323 return (NT_STATUS_NO_MEMORY);
324
325 status = netr_setup_token_wingrps(info3, token);
326 if (status != NT_STATUS_SUCCESS)
327 return (status);
328
329 /*
330 * The UserSessionKey in NetrSamLogon RPC is obfuscated using the
331 * session key obtained in the NETLOGON credential chain.
332 * An 8 byte session key is zero extended to 16 bytes. This 16 byte
333 * key is the key to the RC4 algorithm. The RC4 byte stream is
334 * exclusively ored with the 16 byte UserSessionKey to recover
335 * the the clear form.
336 */
337 if ((token->tkn_ssnkey.val = malloc(SMBAUTH_SESSION_KEY_SZ)) == NULL)
338 return (NT_STATUS_NO_MEMORY);
339 token->tkn_ssnkey.len = SMBAUTH_SESSION_KEY_SZ;
340 bzero(rc4key, SMBAUTH_SESSION_KEY_SZ);
341 bcopy(netr_info->session_key.key, rc4key, netr_info->session_key.len);
342 bcopy(info3->UserSessionKey.data, token->tkn_ssnkey.val,
343 SMBAUTH_SESSION_KEY_SZ);
344 rand_hash((unsigned char *)token->tkn_ssnkey.val,
345 SMBAUTH_SESSION_KEY_SZ, rc4key, SMBAUTH_SESSION_KEY_SZ);
346
347 return (NT_STATUS_SUCCESS);
348 }
349
350 /*
351 * netr_server_samlogon
352 *
353 * NetrServerSamLogon RPC: interactive or network. It is assumed that
354 * we have already authenticated with the PDC. If everything works,
355 * we build a user info structure and return it, where the caller will
356 * probably build an access token.
357 *
358 * Returns an NT status. There are numerous possibilities here.
359 * For example:
360 * NT_STATUS_INVALID_INFO_CLASS
361 * NT_STATUS_INVALID_PARAMETER
362 * NT_STATUS_ACCESS_DENIED
363 * NT_STATUS_PASSWORD_MUST_CHANGE
364 * NT_STATUS_NO_SUCH_USER
365 * NT_STATUS_WRONG_PASSWORD
366 * NT_STATUS_LOGON_FAILURE
367 * NT_STATUS_ACCOUNT_RESTRICTION
368 * NT_STATUS_INVALID_LOGON_HOURS
369 * NT_STATUS_INVALID_WORKSTATION
370 * NT_STATUS_INTERNAL_ERROR
371 * NT_STATUS_PASSWORD_EXPIRED
372 * NT_STATUS_ACCOUNT_DISABLED
373 */
374 uint32_t
375 netr_server_samlogon(mlsvc_handle_t *netr_handle, netr_info_t *netr_info,
376 char *server, smb_logon_t *user_info, smb_token_t *token)
377 {
378 struct netr_SamLogon arg;
379 struct netr_authenticator auth;
380 struct netr_authenticator ret_auth;
381 struct netr_logon_info1 info1;
382 struct netr_logon_info2 info2;
383 struct netr_validation_info3 *info3;
384 ndr_heap_t *heap;
385 int opnum;
386 int rc, len;
387 uint32_t status;
388
389 bzero(&arg, sizeof (struct netr_SamLogon));
390 opnum = NETR_OPNUM_SamLogon;
391
392 /*
393 * Should we get the server and hostname from netr_info?
394 */
395
396 len = strlen(server) + 4;
397 arg.servername = ndr_rpc_malloc(netr_handle, len);
398 arg.hostname = ndr_rpc_malloc(netr_handle, NETBIOS_NAME_SZ);
399 if (arg.servername == NULL || arg.hostname == NULL) {
400 ndr_rpc_release(netr_handle);
401 return (NT_STATUS_INTERNAL_ERROR);
402 }
403
404 (void) snprintf((char *)arg.servername, len, "\\\\%s", server);
405 if (smb_getnetbiosname((char *)arg.hostname, NETBIOS_NAME_SZ) != 0) {
406 ndr_rpc_release(netr_handle);
407 return (NT_STATUS_INTERNAL_ERROR);
408 }
409
410 rc = netr_setup_authenticator(netr_info, &auth, &ret_auth);
411 if (rc != SMBAUTH_SUCCESS) {
412 ndr_rpc_release(netr_handle);
413 return (NT_STATUS_INTERNAL_ERROR);
414 }
415
416 arg.auth = &auth;
417 arg.ret_auth = &ret_auth;
418 arg.validation_level = NETR_VALIDATION_LEVEL3;
419 arg.logon_info.logon_level = user_info->lg_level;
420 arg.logon_info.switch_value = user_info->lg_level;
421
422 heap = ndr_rpc_get_heap(netr_handle);
423
424 switch (user_info->lg_level) {
425 case NETR_INTERACTIVE_LOGON:
426 netr_setup_identity(heap, user_info, &info1.identity);
427 netr_interactive_samlogon(netr_info, user_info, &info1);
428 arg.logon_info.ru.info1 = &info1;
429 break;
430
431 case NETR_NETWORK_LOGON:
432 if (user_info->lg_challenge_key.len < 8 ||
433 user_info->lg_challenge_key.val == NULL) {
434 ndr_rpc_release(netr_handle);
435 return (NT_STATUS_INVALID_PARAMETER);
436 }
437 netr_setup_identity(heap, user_info, &info2.identity);
438 netr_network_samlogon(heap, netr_info, user_info, &info2);
439 arg.logon_info.ru.info2 = &info2;
440 break;
441
442 default:
443 ndr_rpc_release(netr_handle);
444 return (NT_STATUS_INVALID_PARAMETER);
445 }
446
447 rc = ndr_rpc_call(netr_handle, opnum, &arg);
448 if (rc != 0) {
449 bzero(netr_info, sizeof (netr_info_t));
450 status = NT_STATUS_INVALID_PARAMETER;
451 } else if (arg.status != 0) {
452 status = NT_SC_VALUE(arg.status);
453
454 /*
455 * We need to validate the chain even though we have
456 * a non-zero status. If the status is ACCESS_DENIED
457 * this will trigger a new credential chain. However,
458 * a valid credential is returned with some status
459 * codes; for example, WRONG_PASSWORD.
460 */
461 (void) netr_validate_chain(netr_info, arg.ret_auth);
462 } else {
463 status = netr_validate_chain(netr_info, arg.ret_auth);
464 if (status == NT_STATUS_INSUFFICIENT_LOGON_INFO) {
465 ndr_rpc_release(netr_handle);
466 return (status);
467 }
468
469 info3 = arg.ru.info3;
470 status = netr_setup_token(info3, user_info, netr_info, token);
471 }
472
473 ndr_rpc_release(netr_handle);
474 return (status);
475 }
476
477 /*
478 * netr_interactive_samlogon
479 *
480 * Set things up for an interactive SamLogon. Copy the NT and LM
481 * passwords to the logon structure and hash them with the session
482 * key.
483 */
484 static void
485 netr_interactive_samlogon(netr_info_t *netr_info, smb_logon_t *user_info,
486 struct netr_logon_info1 *info1)
487 {
488 BYTE key[NETR_OWF_PASSWORD_SZ];
489
490 (void) memcpy(&info1->lm_owf_password,
491 user_info->lg_lm_password.val, sizeof (netr_owf_password_t));
492
493 (void) memcpy(&info1->nt_owf_password,
494 user_info->lg_nt_password.val, sizeof (netr_owf_password_t));
495
496 (void) memset(key, 0, NETR_OWF_PASSWORD_SZ);
497 (void) memcpy(key, netr_info->session_key.key,
498 netr_info->session_key.len);
499
500 rand_hash((unsigned char *)&info1->lm_owf_password,
501 NETR_OWF_PASSWORD_SZ, key, NETR_OWF_PASSWORD_SZ);
502
503 rand_hash((unsigned char *)&info1->nt_owf_password,
504 NETR_OWF_PASSWORD_SZ, key, NETR_OWF_PASSWORD_SZ);
505 }
506
507 /*
508 * netr_network_samlogon
509 *
510 * Set things up for a network SamLogon. We provide a copy of the random
511 * challenge, that we sent to the client, to the domain controller. This
512 * is the key that the client will have used to encrypt the NT and LM
513 * passwords. Note that Windows 9x clients may not provide both passwords.
514 */
515 /*ARGSUSED*/
516 static void
517 netr_network_samlogon(ndr_heap_t *heap, netr_info_t *netr_info,
518 smb_logon_t *user_info, struct netr_logon_info2 *info2)
519 {
520 uint32_t len;
521
522 if (user_info->lg_challenge_key.len >= 8 &&
523 user_info->lg_challenge_key.val != 0) {
524 bcopy(user_info->lg_challenge_key.val,
525 info2->lm_challenge.data, 8);
526 } else {
527 bzero(info2->lm_challenge.data, 8);
528 }
529
530 if ((len = user_info->lg_nt_password.len) != 0) {
531 ndr_heap_mkvcb(heap, user_info->lg_nt_password.val, len,
532 (ndr_vcbuf_t *)&info2->nt_response);
533 } else {
534 bzero(&info2->nt_response, sizeof (netr_vcbuf_t));
535 }
536
537 if ((len = user_info->lg_lm_password.len) != 0) {
538 ndr_heap_mkvcb(heap, user_info->lg_lm_password.val, len,
539 (ndr_vcbuf_t *)&info2->lm_response);
540 } else {
541 bzero(&info2->lm_response, sizeof (netr_vcbuf_t));
542 }
543 }
544
545 /*
546 * netr_setup_authenticator
547 *
548 * Set up the request and return authenticators. A new credential is
549 * generated from the session key, the current client credential and
550 * the current time, i.e.
551 *
552 * NewCredential = Cred(SessionKey, OldCredential, time);
553 *
554 * The timestamp, which is used as a random seed, is stored in both
555 * the request and return authenticators.
556 *
557 * If any difficulties occur using the cryptographic framework, the
558 * function returns SMBAUTH_FAILURE. Otherwise SMBAUTH_SUCCESS is
559 * returned.
560 */
561 int
562 netr_setup_authenticator(netr_info_t *netr_info,
563 struct netr_authenticator *auth, struct netr_authenticator *ret_auth)
564 {
565 bzero(auth, sizeof (struct netr_authenticator));
566
567 netr_info->timestamp = time(0);
568 auth->timestamp = netr_info->timestamp;
569
570 if (netr_gen_credentials(netr_info->session_key.key,
571 &netr_info->client_credential,
572 netr_info->timestamp,
573 (netr_cred_t *)&auth->credential) != SMBAUTH_SUCCESS)
574 return (SMBAUTH_FAILURE);
575
576 if (ret_auth) {
577 bzero(ret_auth, sizeof (struct netr_authenticator));
578 ret_auth->timestamp = netr_info->timestamp;
579 }
580
581 return (SMBAUTH_SUCCESS);
582 }
583
584 /*
585 * Validate the returned credentials and update the credential chain.
586 * The server returns an updated client credential rather than a new
587 * server credential. The server uses (timestamp + 1) when generating
588 * the credential.
589 *
590 * Generate the new seed for the credential chain. The new seed is
591 * formed by adding (timestamp + 1) to the current client credential.
592 * The only quirk is the uint32_t style addition.
593 *
594 * Returns NT_STATUS_INSUFFICIENT_LOGON_INFO if auth->credential is a
595 * NULL pointer. The Authenticator field of the SamLogon response packet
596 * sent by the Samba 3 PDC always return NULL pointer if the received
597 * SamLogon request is not immediately followed by the ServerReqChallenge
598 * and ServerAuthenticate2 requests.
599 *
600 * Returns NT_STATUS_SUCCESS if the server returned a valid credential.
601 * Otherwise we retirm NT_STATUS_UNSUCCESSFUL.
602 */
603 uint32_t
604 netr_validate_chain(netr_info_t *netr_info, struct netr_authenticator *auth)
605 {
606 netr_cred_t cred;
607 uint32_t result = NT_STATUS_SUCCESS;
608 uint32_t *dwp;
609
610 ++netr_info->timestamp;
611
612 if (netr_gen_credentials(netr_info->session_key.key,
613 &netr_info->client_credential,
614 netr_info->timestamp, &cred) != SMBAUTH_SUCCESS)
615 return (NT_STATUS_INTERNAL_ERROR);
616
617 if (&auth->credential == 0) {
618 /*
619 * If the validation fails, destroy the credential chain.
620 * This should trigger a new authentication chain.
621 */
622 bzero(netr_info, sizeof (netr_info_t));
623 return (NT_STATUS_INSUFFICIENT_LOGON_INFO);
624 }
625
626 result = memcmp(&cred, &auth->credential, sizeof (netr_cred_t));
627 if (result != 0) {
628 /*
629 * If the validation fails, destroy the credential chain.
630 * This should trigger a new authentication chain.
631 */
632 bzero(netr_info, sizeof (netr_info_t));
633 result = NT_STATUS_UNSUCCESSFUL;
634 } else {
635 /*
636 * Otherwise generate the next step in the chain.
637 */
638 /*LINTED E_BAD_PTR_CAST_ALIGN*/
639 dwp = (uint32_t *)&netr_info->client_credential;
640 dwp[0] += netr_info->timestamp;
641
642 netr_info->flags |= NETR_FLG_VALID;
643 }
644
645 return (result);
646 }
647
648 /*
649 * netr_invalidate_chain
650 *
651 * Mark the credential chain as invalid so that it will be recreated
652 * on the next attempt.
653 */
654 static void
655 netr_invalidate_chain(void)
656 {
657 netr_global_info.flags &= ~NETR_FLG_VALID;
658 }
659
660 /*
661 * netr_setup_identity
662 *
663 * Set up the client identity information. All of this information is
664 * specifically related to the client user and workstation attempting
665 * to access this system. It may not be in our primary domain.
666 *
667 * I don't know what logon_id is, it seems to be a unique identifier.
668 * Increment it before each use.
669 */
670 static void
671 netr_setup_identity(ndr_heap_t *heap, smb_logon_t *user_info,
672 netr_logon_id_t *identity)
673 {
674 static mutex_t logon_id_mutex;
675 static uint32_t logon_id;
676
677 (void) mutex_lock(&logon_id_mutex);
678
679 if (logon_id == 0)
680 logon_id = 0xDCD0;
681
682 ++logon_id;
683 user_info->lg_logon_id = logon_id;
684
685 (void) mutex_unlock(&logon_id_mutex);
686
687 /*
688 * [MS-APDS] 3.1.5.2 "NTLM Network Logon" says to set
689 * ParameterControl to the 'E' + 'K' bits. Those are:
690 * (1 << 5) | (1 << 11), a.k.a
691 */
692 identity->parameter_control =
693 MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT |
694 MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT;
695 identity->logon_id.LowPart = logon_id;
696 identity->logon_id.HighPart = 0;
697
698 ndr_heap_mkvcs(heap, user_info->lg_domain,
699 (ndr_vcstr_t *)&identity->domain_name);
700
701 ndr_heap_mkvcs(heap, user_info->lg_username,
702 (ndr_vcstr_t *)&identity->username);
703
704 /*
705 * Some systems prefix the client workstation name with \\.
706 * It doesn't seem to make any difference whether it's there
707 * or not.
708 */
709 ndr_heap_mkvcs(heap, user_info->lg_workstation,
710 (ndr_vcstr_t *)&identity->workstation);
711 }
712
713 /*
714 * Sets up domain, local and well-known group membership for the given
715 * token. Two assumptions have been made here:
716 *
717 * a) token already contains a valid user SID so that group
718 * memberships can be established
719 *
720 * b) token belongs to a domain user
721 */
722 static uint32_t
723 netr_setup_token_wingrps(struct netr_validation_info3 *info3,
724 smb_token_t *token)
725 {
726 smb_ids_t tkn_grps;
727 uint32_t status;
728
729 tkn_grps.i_cnt = 0;
730 tkn_grps.i_ids = NULL;
731
732 status = netr_setup_domain_groups(info3, &tkn_grps);
733 if (status != NT_STATUS_SUCCESS) {
734 smb_ids_free(&tkn_grps);
735 return (status);
736 }
737
738 status = smb_sam_usr_groups(token->tkn_user.i_sid, &tkn_grps);
739 if (status != NT_STATUS_SUCCESS) {
740 smb_ids_free(&tkn_grps);
741 return (status);
742 }
743
744 if (netr_isadmin(info3))
745 token->tkn_flags |= SMB_ATF_ADMIN;
746
747 status = smb_wka_token_groups(token->tkn_flags, &tkn_grps);
748 if (status == NT_STATUS_SUCCESS)
749 token->tkn_win_grps = tkn_grps;
750 else
751 smb_ids_free(&tkn_grps);
752
753 return (status);
754 }
755
756 /*
757 * Converts groups information in the returned structure by domain controller
758 * (info3) to an internal representation (gids)
759 */
760 static uint32_t
761 netr_setup_domain_groups(struct netr_validation_info3 *info3, smb_ids_t *gids)
762 {
763 smb_sid_t *domain_sid;
764 smb_id_t *ids;
765 int i, total_cnt;
766
767 if ((i = info3->GroupCount) == 0)
768 i++;
769 i += info3->SidCount;
770
771 total_cnt = gids->i_cnt + i;
772
773 gids->i_ids = realloc(gids->i_ids, total_cnt * sizeof (smb_id_t));
774 if (gids->i_ids == NULL)
775 return (NT_STATUS_NO_MEMORY);
776
777 domain_sid = (smb_sid_t *)info3->LogonDomainId;
778
779 ids = gids->i_ids + gids->i_cnt;
780 for (i = 0; i < info3->GroupCount; i++, gids->i_cnt++, ids++) {
781 ids->i_sid = smb_sid_splice(domain_sid, info3->GroupIds[i].rid);
782 if (ids->i_sid == NULL)
783 return (NT_STATUS_NO_MEMORY);
784
785 ids->i_attrs = info3->GroupIds[i].attributes;
786 }
787
788 if (info3->GroupCount == 0) {
789 /*
790 * if there's no global group should add the primary group.
791 */
792 ids->i_sid = smb_sid_splice(domain_sid, info3->PrimaryGroupId);
793 if (ids->i_sid == NULL)
794 return (NT_STATUS_NO_MEMORY);
795
796 ids->i_attrs = 0x7;
797 gids->i_cnt++;
798 ids++;
799 }
800
801 /* Add the extra SIDs */
802 for (i = 0; i < info3->SidCount; i++, gids->i_cnt++, ids++) {
803 ids->i_sid = smb_sid_dup((smb_sid_t *)info3->ExtraSids[i].sid);
804 if (ids->i_sid == NULL)
805 return (NT_STATUS_NO_MEMORY);
806
807 ids->i_attrs = info3->ExtraSids[i].attributes;
808 }
809
810 return (NT_STATUS_SUCCESS);
811 }
812
813 /*
814 * Determines if the given user is the domain Administrator or a
815 * member of Domain Admins
816 */
817 static boolean_t
818 netr_isadmin(struct netr_validation_info3 *info3)
819 {
820 smb_domain_t di;
821 int i;
822
823 if (!smb_domain_lookup_sid((smb_sid_t *)info3->LogonDomainId, &di))
824 return (B_FALSE);
825
826 if (di.di_type != SMB_DOMAIN_PRIMARY)
827 return (B_FALSE);
828
829 if ((info3->UserId == DOMAIN_USER_RID_ADMIN) ||
830 (info3->PrimaryGroupId == DOMAIN_GROUP_RID_ADMINS))
831 return (B_TRUE);
832
833 for (i = 0; i < info3->GroupCount; i++)
834 if (info3->GroupIds[i].rid == DOMAIN_GROUP_RID_ADMINS)
835 return (B_TRUE);
836
837 return (B_FALSE);
838 }