source: branches/samba-3.0/source/rpc_server/srv_netlog_nt.c@ 112

Last change on this file since 112 was 1, checked in by Paul Smedley, 19 years ago

Initial code import
File size: 35.4 KB
Line 
1/*
2 * Unix SMB/CIFS implementation.
3 * RPC Pipe client / server routines
4 * Copyright (C) Andrew Tridgell 1992-1997,
5 * Copyright (C) Luke Kenneth Casson Leighton 1996-1997,
6 * Copyright (C) Paul Ashton 1997.
7 * Copyright (C) Jeremy Allison 1998-2001.
8 * Copyright (C) Andrew Bartlett 2001.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 */
24
25/* This is the implementation of the netlogon pipe. */
26
27#include "includes.h"
28
29extern userdom_struct current_user_info;
30
31#undef DBGC_CLASS
32#define DBGC_CLASS DBGC_RPC_SRV
33
34/*************************************************************************
35 init_net_r_req_chal:
36 *************************************************************************/
37
38static void init_net_r_req_chal(NET_R_REQ_CHAL *r_c,
39 DOM_CHAL *srv_chal, NTSTATUS status)
40{
41 DEBUG(6,("init_net_r_req_chal: %d\n", __LINE__));
42 memcpy(r_c->srv_chal.data, srv_chal->data, sizeof(srv_chal->data));
43 r_c->status = status;
44}
45
46/*************************************************************************
47 error messages cropping up when using nltest.exe...
48 *************************************************************************/
49
50#define ERROR_NO_SUCH_DOMAIN 0x54b
51#define ERROR_NO_LOGON_SERVERS 0x51f
52#define NO_ERROR 0x0
53
54/*************************************************************************
55 net_reply_logon_ctrl:
56 *************************************************************************/
57
58NTSTATUS _net_logon_ctrl(pipes_struct *p, NET_Q_LOGON_CTRL *q_u,
59 NET_R_LOGON_CTRL *r_u)
60{
61 uint32 flags = 0x0;
62 uint32 pdc_connection_status = 0x00; /* Maybe a win32 error code? */
63
64 /* Setup the Logon Control response */
65
66 init_net_r_logon_ctrl(r_u, q_u->query_level, flags,
67 pdc_connection_status);
68
69 return r_u->status;
70}
71
72/****************************************************************************
73Send a message to smbd to do a sam synchronisation
74**************************************************************************/
75
76static void send_sync_message(void)
77{
78 TDB_CONTEXT *tdb;
79
80 tdb = tdb_open_log(lock_path("connections.tdb"), 0,
81 TDB_DEFAULT, O_RDONLY, 0);
82
83 if (!tdb) {
84 DEBUG(3, ("send_sync_message(): failed to open connections "
85 "database\n"));
86 return;
87 }
88
89 DEBUG(3, ("sending sam synchronisation message\n"));
90
91 message_send_all(tdb, MSG_SMB_SAM_SYNC, NULL, 0, False, NULL);
92
93 tdb_close(tdb);
94}
95
96/*************************************************************************
97 net_reply_logon_ctrl2:
98 *************************************************************************/
99
100NTSTATUS _net_logon_ctrl2(pipes_struct *p, NET_Q_LOGON_CTRL2 *q_u, NET_R_LOGON_CTRL2 *r_u)
101{
102 uint32 flags = 0x0;
103 uint32 pdc_connection_status = 0x0;
104 uint32 logon_attempts = 0x0;
105 uint32 tc_status;
106 fstring servername, domain, dc_name, dc_name2;
107 struct in_addr dc_ip;
108
109 /* this should be \\global_myname() */
110 unistr2_to_ascii(servername, &q_u->uni_server_name, sizeof(servername));
111
112 r_u->status = NT_STATUS_OK;
113
114 tc_status = ERROR_NO_SUCH_DOMAIN;
115 fstrcpy( dc_name, "" );
116
117 switch ( q_u->function_code ) {
118 case NETLOGON_CONTROL_TC_QUERY:
119 unistr2_to_ascii(domain, &q_u->info.info6.domain, sizeof(domain));
120
121 if ( !is_trusted_domain( domain ) )
122 break;
123
124 if ( !get_dc_name( domain, NULL, dc_name2, &dc_ip ) ) {
125 tc_status = ERROR_NO_LOGON_SERVERS;
126 break;
127 }
128
129 fstr_sprintf( dc_name, "\\\\%s", dc_name2 );
130
131 tc_status = NO_ERROR;
132
133 break;
134
135 case NETLOGON_CONTROL_REDISCOVER:
136 unistr2_to_ascii(domain, &q_u->info.info6.domain, sizeof(domain));
137
138 if ( !is_trusted_domain( domain ) )
139 break;
140
141 if ( !get_dc_name( domain, NULL, dc_name2, &dc_ip ) ) {
142 tc_status = ERROR_NO_LOGON_SERVERS;
143 break;
144 }
145
146 fstr_sprintf( dc_name, "\\\\%s", dc_name2 );
147
148 tc_status = NO_ERROR;
149
150 break;
151
152 default:
153 /* no idea what this should be */
154 DEBUG(0,("_net_logon_ctrl2: unimplemented function level [%d]\n",
155 q_u->function_code));
156 }
157
158 /* prepare the response */
159
160 init_net_r_logon_ctrl2( r_u, q_u->query_level, flags,
161 pdc_connection_status, logon_attempts, tc_status, dc_name );
162
163 if (lp_server_role() == ROLE_DOMAIN_BDC)
164 send_sync_message();
165
166 return r_u->status;
167}
168
169/*************************************************************************
170 net_reply_trust_dom_list:
171 *************************************************************************/
172
173NTSTATUS _net_trust_dom_list(pipes_struct *p, NET_Q_TRUST_DOM_LIST *q_u, NET_R_TRUST_DOM_LIST *r_u)
174{
175 const char *trusted_domain = "test_domain";
176 uint32 num_trust_domains = 1;
177
178 DEBUG(6,("_net_trust_dom_list: %d\n", __LINE__));
179
180 /* set up the Trusted Domain List response */
181 init_r_trust_dom(r_u, num_trust_domains, trusted_domain);
182
183 DEBUG(6,("_net_trust_dom_list: %d\n", __LINE__));
184
185 return r_u->status;
186}
187
188/***********************************************************************************
189 init_net_r_srv_pwset:
190 ***********************************************************************************/
191
192static void init_net_r_srv_pwset(NET_R_SRV_PWSET *r_s,
193 DOM_CRED *srv_cred, NTSTATUS status)
194{
195 DEBUG(5,("init_net_r_srv_pwset: %d\n", __LINE__));
196
197 memcpy(&r_s->srv_cred, srv_cred, sizeof(r_s->srv_cred));
198 r_s->status = status;
199
200 DEBUG(5,("init_net_r_srv_pwset: %d\n", __LINE__));
201}
202
203/******************************************************************
204 gets a machine password entry. checks access rights of the host.
205 ******************************************************************/
206
207static NTSTATUS get_md4pw(char *md4pw, char *mach_acct, uint16 sec_chan_type)
208{
209 struct samu *sampass = NULL;
210 const uint8 *pass;
211 BOOL ret;
212 uint32 acct_ctrl;
213
214#if 0
215 /*
216 * Currently this code is redundent as we already have a filter
217 * by hostname list. What this code really needs to do is to
218 * get a hosts allowed/hosts denied list from the SAM database
219 * on a per user basis, and make the access decision there.
220 * I will leave this code here for now as a reminder to implement
221 * this at a later date. JRA.
222 */
223
224 if (!allow_access(lp_domain_hostsdeny(), lp_domain_hostsallow(),
225 client_name(), client_addr()))
226 {
227 DEBUG(0,("get_md4pw: Workstation %s denied access to domain\n", mach_acct));
228 return False;
229 }
230#endif /* 0 */
231
232 if ( !(sampass = samu_new( NULL )) ) {
233 return NT_STATUS_NO_MEMORY;
234 }
235
236 /* JRA. This is ok as it is only used for generating the challenge. */
237 become_root();
238 ret = pdb_getsampwnam(sampass, mach_acct);
239 unbecome_root();
240
241 if (!ret) {
242 DEBUG(0,("get_md4pw: Workstation %s: no account in domain\n", mach_acct));
243 TALLOC_FREE(sampass);
244 return NT_STATUS_ACCESS_DENIED;
245 }
246
247 acct_ctrl = pdb_get_acct_ctrl(sampass);
248 if (acct_ctrl & ACB_DISABLED) {
249 DEBUG(0,("get_md4pw: Workstation %s: account is disabled\n", mach_acct));
250 TALLOC_FREE(sampass);
251 return NT_STATUS_ACCOUNT_DISABLED;
252 }
253
254 if (!(acct_ctrl & ACB_SVRTRUST) &&
255 !(acct_ctrl & ACB_WSTRUST) &&
256 !(acct_ctrl & ACB_DOMTRUST))
257 {
258 DEBUG(0,("get_md4pw: Workstation %s: account is not a trust account\n", mach_acct));
259 TALLOC_FREE(sampass);
260 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
261 }
262
263 switch (sec_chan_type) {
264 case SEC_CHAN_BDC:
265 if (!(acct_ctrl & ACB_SVRTRUST)) {
266 DEBUG(0,("get_md4pw: Workstation %s: BDC secure channel requested "
267 "but not a server trust account\n", mach_acct));
268 TALLOC_FREE(sampass);
269 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
270 }
271 break;
272 case SEC_CHAN_WKSTA:
273 if (!(acct_ctrl & ACB_WSTRUST)) {
274 DEBUG(0,("get_md4pw: Workstation %s: WORKSTATION secure channel requested "
275 "but not a workstation trust account\n", mach_acct));
276 TALLOC_FREE(sampass);
277 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
278 }
279 break;
280 case SEC_CHAN_DOMAIN:
281 if (!(acct_ctrl & ACB_DOMTRUST)) {
282 DEBUG(0,("get_md4pw: Workstation %s: DOMAIN secure channel requested "
283 "but not a interdomain trust account\n", mach_acct));
284 TALLOC_FREE(sampass);
285 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
286 }
287 break;
288 default:
289 break;
290 }
291
292 if ((pass = pdb_get_nt_passwd(sampass)) == NULL) {
293 DEBUG(0,("get_md4pw: Workstation %s: account does not have a password\n", mach_acct));
294 TALLOC_FREE(sampass);
295 return NT_STATUS_LOGON_FAILURE;
296 }
297
298 memcpy(md4pw, pass, 16);
299 dump_data(5, md4pw, 16);
300
301 TALLOC_FREE(sampass);
302
303 return NT_STATUS_OK;
304
305
306}
307
308/*************************************************************************
309 _net_req_chal
310 *************************************************************************/
311
312NTSTATUS _net_req_chal(pipes_struct *p, NET_Q_REQ_CHAL *q_u, NET_R_REQ_CHAL *r_u)
313{
314 if (!p->dc) {
315 p->dc = TALLOC_ZERO_P(p->pipe_state_mem_ctx, struct dcinfo);
316 if (!p->dc) {
317 return NT_STATUS_NO_MEMORY;
318 }
319 } else {
320 DEBUG(10,("_net_req_chal: new challenge requested. Clearing old state.\n"));
321 ZERO_STRUCTP(p->dc);
322 }
323
324 rpcstr_pull(p->dc->remote_machine,
325 q_u->uni_logon_clnt.buffer,
326 sizeof(fstring),q_u->uni_logon_clnt.uni_str_len*2,0);
327
328 /* Save the client challenge to the server. */
329 memcpy(p->dc->clnt_chal.data, q_u->clnt_chal.data, sizeof(q_u->clnt_chal.data));
330
331 /* Create a server challenge for the client */
332 /* Set this to a random value. */
333 generate_random_buffer(p->dc->srv_chal.data, 8);
334
335 /* set up the LSA REQUEST CHALLENGE response */
336 init_net_r_req_chal(r_u, &p->dc->srv_chal, NT_STATUS_OK);
337
338 p->dc->challenge_sent = True;
339
340 return NT_STATUS_OK;
341}
342
343/*************************************************************************
344 init_net_r_auth:
345 *************************************************************************/
346
347static void init_net_r_auth(NET_R_AUTH *r_a, DOM_CHAL *resp_cred, NTSTATUS status)
348{
349 memcpy(r_a->srv_chal.data, resp_cred->data, sizeof(resp_cred->data));
350 r_a->status = status;
351}
352
353/*************************************************************************
354 _net_auth. Create the initial credentials.
355 *************************************************************************/
356
357NTSTATUS _net_auth(pipes_struct *p, NET_Q_AUTH *q_u, NET_R_AUTH *r_u)
358{
359 NTSTATUS status;
360 fstring mach_acct;
361 fstring remote_machine;
362 DOM_CHAL srv_chal_out;
363
364 if (!p->dc || !p->dc->challenge_sent) {
365 return NT_STATUS_ACCESS_DENIED;
366 }
367
368 rpcstr_pull(mach_acct, q_u->clnt_id.uni_acct_name.buffer,sizeof(fstring),
369 q_u->clnt_id.uni_acct_name.uni_str_len*2,0);
370 rpcstr_pull(remote_machine, q_u->clnt_id.uni_comp_name.buffer,sizeof(fstring),
371 q_u->clnt_id.uni_comp_name.uni_str_len*2,0);
372
373 status = get_md4pw((char *)p->dc->mach_pw, mach_acct, q_u->clnt_id.sec_chan);
374 if (!NT_STATUS_IS_OK(status)) {
375 DEBUG(0,("_net_auth: creds_server_check failed. Failed to "
376 "get password for machine account %s "
377 "from client %s: %s\n",
378 mach_acct, remote_machine, nt_errstr(status) ));
379 /* always return NT_STATUS_ACCESS_DENIED */
380 return NT_STATUS_ACCESS_DENIED;
381 }
382
383 /* From the client / server challenges and md4 password, generate sess key */
384 creds_server_init(0, /* No neg flags. */
385 p->dc,
386 &p->dc->clnt_chal, /* Stored client chal. */
387 &p->dc->srv_chal, /* Stored server chal. */
388 p->dc->mach_pw,
389 &srv_chal_out);
390
391 /* Check client credentials are valid. */
392 if (!creds_server_check(p->dc, &q_u->clnt_chal)) {
393 DEBUG(0,("_net_auth: creds_server_check failed. Rejecting auth "
394 "request from client %s machine account %s\n",
395 remote_machine, mach_acct ));
396 return NT_STATUS_ACCESS_DENIED;
397 }
398
399 fstrcpy(p->dc->mach_acct, mach_acct);
400 fstrcpy(p->dc->remote_machine, remote_machine);
401 p->dc->authenticated = True;
402
403 /* set up the LSA AUTH response */
404 /* Return the server credentials. */
405 init_net_r_auth(r_u, &srv_chal_out, NT_STATUS_OK);
406
407 return r_u->status;
408}
409
410/*************************************************************************
411 init_net_r_auth_2:
412 *************************************************************************/
413
414static void init_net_r_auth_2(NET_R_AUTH_2 *r_a,
415 DOM_CHAL *resp_cred, NEG_FLAGS *flgs, NTSTATUS status)
416{
417 memcpy(r_a->srv_chal.data, resp_cred->data, sizeof(resp_cred->data));
418 memcpy(&r_a->srv_flgs, flgs, sizeof(r_a->srv_flgs));
419 r_a->status = status;
420}
421
422/*************************************************************************
423 _net_auth_2
424 *************************************************************************/
425
426NTSTATUS _net_auth_2(pipes_struct *p, NET_Q_AUTH_2 *q_u, NET_R_AUTH_2 *r_u)
427{
428 NTSTATUS status;
429 NEG_FLAGS srv_flgs;
430 fstring mach_acct;
431 fstring remote_machine;
432 DOM_CHAL srv_chal_out;
433
434 rpcstr_pull(mach_acct, q_u->clnt_id.uni_acct_name.buffer,sizeof(fstring),
435 q_u->clnt_id.uni_acct_name.uni_str_len*2,0);
436
437 /* We use this as the key to store the creds. */
438 rpcstr_pull(remote_machine, q_u->clnt_id.uni_comp_name.buffer,sizeof(fstring),
439 q_u->clnt_id.uni_comp_name.uni_str_len*2,0);
440
441 if (!p->dc || !p->dc->challenge_sent) {
442 DEBUG(0,("_net_auth2: no challenge sent to client %s\n",
443 remote_machine ));
444 return NT_STATUS_ACCESS_DENIED;
445 }
446
447 if ( (lp_server_schannel() == True) &&
448 ((q_u->clnt_flgs.neg_flags & NETLOGON_NEG_SCHANNEL) == 0) ) {
449
450 /* schannel must be used, but client did not offer it. */
451 DEBUG(0,("_net_auth2: schannel required but client failed "
452 "to offer it. Client was %s\n",
453 mach_acct ));
454 return NT_STATUS_ACCESS_DENIED;
455 }
456
457 status = get_md4pw((char *)p->dc->mach_pw, mach_acct, q_u->clnt_id.sec_chan);
458 if (!NT_STATUS_IS_OK(status)) {
459 DEBUG(0,("_net_auth2: failed to get machine password for "
460 "account %s: %s\n",
461 mach_acct, nt_errstr(status) ));
462 /* always return NT_STATUS_ACCESS_DENIED */
463 return NT_STATUS_ACCESS_DENIED;
464 }
465
466 /* From the client / server challenges and md4 password, generate sess key */
467 creds_server_init(q_u->clnt_flgs.neg_flags,
468 p->dc,
469 &p->dc->clnt_chal, /* Stored client chal. */
470 &p->dc->srv_chal, /* Stored server chal. */
471 p->dc->mach_pw,
472 &srv_chal_out);
473
474 /* Check client credentials are valid. */
475 if (!creds_server_check(p->dc, &q_u->clnt_chal)) {
476 DEBUG(0,("_net_auth2: creds_server_check failed. Rejecting auth "
477 "request from client %s machine account %s\n",
478 remote_machine, mach_acct ));
479 return NT_STATUS_ACCESS_DENIED;
480 }
481
482 srv_flgs.neg_flags = 0x000001ff;
483
484 if (lp_server_schannel() != False) {
485 srv_flgs.neg_flags |= NETLOGON_NEG_SCHANNEL;
486 }
487
488 /* set up the LSA AUTH 2 response */
489 init_net_r_auth_2(r_u, &srv_chal_out, &srv_flgs, NT_STATUS_OK);
490
491 fstrcpy(p->dc->mach_acct, mach_acct);
492 fstrcpy(p->dc->remote_machine, remote_machine);
493 fstrcpy(p->dc->domain, lp_workgroup() );
494
495 p->dc->authenticated = True;
496
497 /* Store off the state so we can continue after client disconnect. */
498 become_root();
499 secrets_store_schannel_session_info(p->mem_ctx,
500 remote_machine,
501 p->dc);
502 unbecome_root();
503
504 return r_u->status;
505}
506
507/*************************************************************************
508 _net_srv_pwset
509 *************************************************************************/
510
511NTSTATUS _net_srv_pwset(pipes_struct *p, NET_Q_SRV_PWSET *q_u, NET_R_SRV_PWSET *r_u)
512{
513 fstring remote_machine;
514 struct samu *sampass=NULL;
515 BOOL ret = False;
516 unsigned char pwd[16];
517 int i;
518 uint32 acct_ctrl;
519 DOM_CRED cred_out;
520 const uchar *old_pw;
521
522 DEBUG(5,("_net_srv_pwset: %d\n", __LINE__));
523
524 /* We need the remote machine name for the creds lookup. */
525 rpcstr_pull(remote_machine,q_u->clnt_id.login.uni_comp_name.buffer,
526 sizeof(remote_machine),q_u->clnt_id.login.uni_comp_name.uni_str_len*2,0);
527
528 if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
529 /* 'server schannel = yes' should enforce use of
530 schannel, the client did offer it in auth2, but
531 obviously did not use it. */
532 DEBUG(0,("_net_srv_pwset: client %s not using schannel for netlogon\n",
533 remote_machine ));
534 return NT_STATUS_ACCESS_DENIED;
535 }
536
537 if (!p->dc) {
538 /* Restore the saved state of the netlogon creds. */
539 become_root();
540 ret = secrets_restore_schannel_session_info(p->pipe_state_mem_ctx,
541 remote_machine,
542 &p->dc);
543 unbecome_root();
544 if (!ret) {
545 return NT_STATUS_INVALID_HANDLE;
546 }
547 }
548
549 if (!p->dc || !p->dc->authenticated) {
550 return NT_STATUS_INVALID_HANDLE;
551 }
552
553 DEBUG(3,("_net_srv_pwset: Server Password Set by remote machine:[%s] on account [%s]\n",
554 remote_machine, p->dc->mach_acct));
555
556 /* Step the creds chain forward. */
557 if (!creds_server_step(p->dc, &q_u->clnt_id.cred, &cred_out)) {
558 DEBUG(2,("_net_srv_pwset: creds_server_step failed. Rejecting auth "
559 "request from client %s machine account %s\n",
560 remote_machine, p->dc->mach_acct ));
561 return NT_STATUS_INVALID_PARAMETER;
562 }
563
564 /* We must store the creds state after an update. */
565 sampass = samu_new( NULL );
566 if (!sampass) {
567 return NT_STATUS_NO_MEMORY;
568 }
569
570 become_root();
571 secrets_store_schannel_session_info(p->pipe_state_mem_ctx,
572 remote_machine,
573 p->dc);
574 ret = pdb_getsampwnam(sampass, p->dc->mach_acct);
575 unbecome_root();
576
577 if (!ret) {
578 TALLOC_FREE(sampass);
579 return NT_STATUS_ACCESS_DENIED;
580 }
581
582 /* Ensure the account exists and is a machine account. */
583
584 acct_ctrl = pdb_get_acct_ctrl(sampass);
585
586 if (!(acct_ctrl & ACB_WSTRUST ||
587 acct_ctrl & ACB_SVRTRUST ||
588 acct_ctrl & ACB_DOMTRUST)) {
589 TALLOC_FREE(sampass);
590 return NT_STATUS_NO_SUCH_USER;
591 }
592
593 if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED) {
594 TALLOC_FREE(sampass);
595 return NT_STATUS_ACCOUNT_DISABLED;
596 }
597
598 /* Woah - what does this to to the credential chain ? JRA */
599 cred_hash3( pwd, q_u->pwd, p->dc->sess_key, 0);
600
601 DEBUG(100,("Server password set : new given value was :\n"));
602 for(i = 0; i < sizeof(pwd); i++)
603 DEBUG(100,("%02X ", pwd[i]));
604 DEBUG(100,("\n"));
605
606 old_pw = pdb_get_nt_passwd(sampass);
607
608 if (old_pw && memcmp(pwd, old_pw, 16) == 0) {
609 /* Avoid backend modificiations and other fun if the
610 client changed the password to the *same thing* */
611
612 ret = True;
613 } else {
614
615 /* LM password should be NULL for machines */
616 if (!pdb_set_lanman_passwd(sampass, NULL, PDB_CHANGED)) {
617 TALLOC_FREE(sampass);
618 return NT_STATUS_NO_MEMORY;
619 }
620
621 if (!pdb_set_nt_passwd(sampass, pwd, PDB_CHANGED)) {
622 TALLOC_FREE(sampass);
623 return NT_STATUS_NO_MEMORY;
624 }
625
626 if (!pdb_set_pass_last_set_time(sampass, time(NULL), PDB_CHANGED)) {
627 TALLOC_FREE(sampass);
628 /* Not quite sure what this one qualifies as, but this will do */
629 return NT_STATUS_UNSUCCESSFUL;
630 }
631
632 become_root();
633 r_u->status = pdb_update_sam_account(sampass);
634 unbecome_root();
635 }
636
637 /* set up the LSA Server Password Set response */
638 init_net_r_srv_pwset(r_u, &cred_out, r_u->status);
639
640 TALLOC_FREE(sampass);
641 return r_u->status;
642}
643
644/*************************************************************************
645 _net_sam_logoff:
646 *************************************************************************/
647
648NTSTATUS _net_sam_logoff(pipes_struct *p, NET_Q_SAM_LOGOFF *q_u, NET_R_SAM_LOGOFF *r_u)
649{
650 fstring remote_machine;
651
652 if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
653 /* 'server schannel = yes' should enforce use of
654 schannel, the client did offer it in auth2, but
655 obviously did not use it. */
656 DEBUG(0,("_net_sam_logoff: client %s not using schannel for netlogon\n",
657 get_remote_machine_name() ));
658 return NT_STATUS_ACCESS_DENIED;
659 }
660
661
662 if (!get_valid_user_struct(p->vuid))
663 return NT_STATUS_NO_SUCH_USER;
664
665 /* Get the remote machine name for the creds store. */
666 rpcstr_pull(remote_machine,q_u->sam_id.client.login.uni_comp_name.buffer,
667 sizeof(remote_machine),q_u->sam_id.client.login.uni_comp_name.uni_str_len*2,0);
668
669 if (!p->dc) {
670 /* Restore the saved state of the netlogon creds. */
671 BOOL ret;
672
673 become_root();
674 ret = secrets_restore_schannel_session_info(p->pipe_state_mem_ctx,
675 remote_machine,
676 &p->dc);
677 unbecome_root();
678 if (!ret) {
679 return NT_STATUS_INVALID_HANDLE;
680 }
681 }
682
683 if (!p->dc || !p->dc->authenticated) {
684 return NT_STATUS_INVALID_HANDLE;
685 }
686
687 r_u->buffer_creds = 1; /* yes, we have valid server credentials */
688
689 /* checks and updates credentials. creates reply credentials */
690 if (!creds_server_step(p->dc, &q_u->sam_id.client.cred, &r_u->srv_creds)) {
691 DEBUG(2,("_net_sam_logoff: creds_server_step failed. Rejecting auth "
692 "request from client %s machine account %s\n",
693 remote_machine, p->dc->mach_acct ));
694 return NT_STATUS_INVALID_PARAMETER;
695 }
696
697 /* We must store the creds state after an update. */
698 become_root();
699 secrets_store_schannel_session_info(p->pipe_state_mem_ctx,
700 remote_machine,
701 p->dc);
702 unbecome_root();
703
704 r_u->status = NT_STATUS_OK;
705 return r_u->status;
706}
707
708/*******************************************************************
709 gets a domain user's groups from their already-calculated NT_USER_TOKEN
710 ********************************************************************/
711
712static NTSTATUS nt_token_to_group_list(TALLOC_CTX *mem_ctx,
713 const DOM_SID *domain_sid,
714 size_t num_sids,
715 const DOM_SID *sids,
716 int *numgroups, DOM_GID **pgids)
717{
718 int i;
719
720 *numgroups=0;
721 *pgids = NULL;
722
723 for (i=0; i<num_sids; i++) {
724 DOM_GID gid;
725 if (!sid_peek_check_rid(domain_sid, &sids[i], &gid.g_rid)) {
726 continue;
727 }
728 gid.attr = (SE_GROUP_MANDATORY|SE_GROUP_ENABLED_BY_DEFAULT|
729 SE_GROUP_ENABLED);
730 ADD_TO_ARRAY(mem_ctx, DOM_GID, gid, pgids, numgroups);
731 if (*pgids == NULL) {
732 return NT_STATUS_NO_MEMORY;
733 }
734 }
735 return NT_STATUS_OK;
736}
737
738/*************************************************************************
739 _net_sam_logon
740 *************************************************************************/
741
742static NTSTATUS _net_sam_logon_internal(pipes_struct *p,
743 NET_Q_SAM_LOGON *q_u,
744 NET_R_SAM_LOGON *r_u,
745 BOOL process_creds)
746{
747 NTSTATUS status = NT_STATUS_OK;
748 NET_USER_INFO_3 *usr_info = NULL;
749 NET_ID_INFO_CTR *ctr = q_u->sam_id.ctr;
750 UNISTR2 *uni_samlogon_user = NULL;
751 UNISTR2 *uni_samlogon_domain = NULL;
752 UNISTR2 *uni_samlogon_workstation = NULL;
753 fstring nt_username, nt_domain, nt_workstation;
754 auth_usersupplied_info *user_info = NULL;
755 auth_serversupplied_info *server_info = NULL;
756 struct samu *sampw;
757 struct auth_context *auth_context = NULL;
758
759 if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
760 /* 'server schannel = yes' should enforce use of
761 schannel, the client did offer it in auth2, but
762 obviously did not use it. */
763 DEBUG(0,("_net_sam_logon_internal: client %s not using schannel for netlogon\n",
764 get_remote_machine_name() ));
765 return NT_STATUS_ACCESS_DENIED;
766 }
767
768 usr_info = TALLOC_P(p->mem_ctx, NET_USER_INFO_3);
769 if (!usr_info) {
770 return NT_STATUS_NO_MEMORY;
771 }
772
773 ZERO_STRUCTP(usr_info);
774
775 /* store the user information, if there is any. */
776 r_u->user = usr_info;
777 r_u->auth_resp = 1; /* authoritative response */
778 if (q_u->validation_level != 2 && q_u->validation_level != 3) {
779 DEBUG(0,("_net_sam_logon: bad validation_level value %d.\n", (int)q_u->validation_level ));
780 return NT_STATUS_ACCESS_DENIED;
781 }
782 /* We handle the return of USER_INFO_2 instead of 3 in the parse return. Sucks, I know... */
783 r_u->switch_value = q_u->validation_level; /* indicates type of validation user info */
784 r_u->buffer_creds = 1; /* Ensure we always return server creds. */
785
786 if (!get_valid_user_struct(p->vuid))
787 return NT_STATUS_NO_SUCH_USER;
788
789 if (process_creds) {
790 fstring remote_machine;
791
792 /* Get the remote machine name for the creds store. */
793 /* Note this is the remote machine this request is coming from (member server),
794 not neccessarily the workstation name the user is logging onto.
795 */
796 rpcstr_pull(remote_machine,q_u->sam_id.client.login.uni_comp_name.buffer,
797 sizeof(remote_machine),q_u->sam_id.client.login.uni_comp_name.uni_str_len*2,0);
798
799 if (!p->dc) {
800 /* Restore the saved state of the netlogon creds. */
801 BOOL ret;
802
803 become_root();
804 ret = secrets_restore_schannel_session_info(p->pipe_state_mem_ctx,
805 remote_machine,
806 &p->dc);
807 unbecome_root();
808 if (!ret) {
809 return NT_STATUS_INVALID_HANDLE;
810 }
811 }
812
813 if (!p->dc || !p->dc->authenticated) {
814 return NT_STATUS_INVALID_HANDLE;
815 }
816
817 /* checks and updates credentials. creates reply credentials */
818 if (!creds_server_step(p->dc, &q_u->sam_id.client.cred, &r_u->srv_creds)) {
819 DEBUG(2,("_net_sam_logon: creds_server_step failed. Rejecting auth "
820 "request from client %s machine account %s\n",
821 remote_machine, p->dc->mach_acct ));
822 return NT_STATUS_INVALID_PARAMETER;
823 }
824
825 /* We must store the creds state after an update. */
826 become_root();
827 secrets_store_schannel_session_info(p->pipe_state_mem_ctx,
828 remote_machine,
829 p->dc);
830 unbecome_root();
831 }
832
833 switch (q_u->sam_id.logon_level) {
834 case INTERACTIVE_LOGON_TYPE:
835 uni_samlogon_user = &ctr->auth.id1.uni_user_name;
836 uni_samlogon_domain = &ctr->auth.id1.uni_domain_name;
837
838 uni_samlogon_workstation = &ctr->auth.id1.uni_wksta_name;
839
840 DEBUG(3,("SAM Logon (Interactive). Domain:[%s]. ", lp_workgroup()));
841 break;
842 case NET_LOGON_TYPE:
843 uni_samlogon_user = &ctr->auth.id2.uni_user_name;
844 uni_samlogon_domain = &ctr->auth.id2.uni_domain_name;
845 uni_samlogon_workstation = &ctr->auth.id2.uni_wksta_name;
846
847 DEBUG(3,("SAM Logon (Network). Domain:[%s]. ", lp_workgroup()));
848 break;
849 default:
850 DEBUG(2,("SAM Logon: unsupported switch value\n"));
851 return NT_STATUS_INVALID_INFO_CLASS;
852 } /* end switch */
853
854 rpcstr_pull(nt_username,uni_samlogon_user->buffer,sizeof(nt_username),uni_samlogon_user->uni_str_len*2,0);
855 rpcstr_pull(nt_domain,uni_samlogon_domain->buffer,sizeof(nt_domain),uni_samlogon_domain->uni_str_len*2,0);
856 rpcstr_pull(nt_workstation,uni_samlogon_workstation->buffer,sizeof(nt_workstation),uni_samlogon_workstation->uni_str_len*2,0);
857
858 DEBUG(3,("User:[%s@%s] Requested Domain:[%s]\n", nt_username, nt_workstation, nt_domain));
859 fstrcpy(current_user_info.smb_name, nt_username);
860 sub_set_smb_name(nt_username);
861
862 DEBUG(5,("Attempting validation level %d for unmapped username %s.\n", q_u->sam_id.ctr->switch_value, nt_username));
863
864 status = NT_STATUS_OK;
865
866 switch (ctr->switch_value) {
867 case NET_LOGON_TYPE:
868 {
869 const char *wksname = nt_workstation;
870
871 if (!NT_STATUS_IS_OK(status = make_auth_context_fixed(&auth_context, ctr->auth.id2.lm_chal))) {
872 return status;
873 }
874
875 /* For a network logon, the workstation name comes in with two
876 * backslashes in the front. Strip them if they are there. */
877
878 if (*wksname == '\\') wksname++;
879 if (*wksname == '\\') wksname++;
880
881 /* Standard challenge/response authenticaion */
882 if (!make_user_info_netlogon_network(&user_info,
883 nt_username, nt_domain,
884 wksname,
885 ctr->auth.id2.param_ctrl,
886 ctr->auth.id2.lm_chal_resp.buffer,
887 ctr->auth.id2.lm_chal_resp.str_str_len,
888 ctr->auth.id2.nt_chal_resp.buffer,
889 ctr->auth.id2.nt_chal_resp.str_str_len)) {
890 status = NT_STATUS_NO_MEMORY;
891 }
892 break;
893 }
894 case INTERACTIVE_LOGON_TYPE:
895 /* 'Interactive' authentication, supplies the password in its
896 MD4 form, encrypted with the session key. We will convert
897 this to challenge/response for the auth subsystem to chew
898 on */
899 {
900 const uint8 *chal;
901
902 if (!NT_STATUS_IS_OK(status = make_auth_context_subsystem(&auth_context))) {
903 return status;
904 }
905
906 chal = auth_context->get_ntlm_challenge(auth_context);
907
908 if (!make_user_info_netlogon_interactive(&user_info,
909 nt_username, nt_domain,
910 nt_workstation,
911 ctr->auth.id1.param_ctrl,
912 chal,
913 ctr->auth.id1.lm_owf.data,
914 ctr->auth.id1.nt_owf.data,
915 p->dc->sess_key)) {
916 status = NT_STATUS_NO_MEMORY;
917 }
918 break;
919 }
920 default:
921 DEBUG(2,("SAM Logon: unsupported switch value\n"));
922 return NT_STATUS_INVALID_INFO_CLASS;
923 } /* end switch */
924
925 if ( NT_STATUS_IS_OK(status) ) {
926 status = auth_context->check_ntlm_password(auth_context,
927 user_info, &server_info);
928 }
929
930 (auth_context->free)(&auth_context);
931 free_user_info(&user_info);
932
933 DEBUG(5, ("_net_sam_logon: check_password returned status %s\n",
934 nt_errstr(status)));
935
936 /* Check account and password */
937
938 if (!NT_STATUS_IS_OK(status)) {
939 /* If we don't know what this domain is, we need to
940 indicate that we are not authoritative. This
941 allows the client to decide if it needs to try
942 a local user. Fix by [email protected], #2976 */
943 if ( NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)
944 && !strequal(nt_domain, get_global_sam_name())
945 && !is_trusted_domain(nt_domain) )
946 r_u->auth_resp = 0; /* We are not authoritative */
947
948 TALLOC_FREE(server_info);
949 return status;
950 }
951
952 if (server_info->guest) {
953 /* We don't like guest domain logons... */
954 DEBUG(5,("_net_sam_logon: Attempted domain logon as GUEST "
955 "denied.\n"));
956 TALLOC_FREE(server_info);
957 return NT_STATUS_LOGON_FAILURE;
958 }
959
960 /* This is the point at which, if the login was successful, that
961 the SAM Local Security Authority should record that the user is
962 logged in to the domain. */
963
964 {
965 DOM_GID *gids = NULL;
966 const DOM_SID *user_sid = NULL;
967 const DOM_SID *group_sid = NULL;
968 DOM_SID domain_sid;
969 uint32 user_rid, group_rid;
970
971 int num_gids = 0;
972 pstring my_name;
973 fstring user_sid_string;
974 fstring group_sid_string;
975 unsigned char user_session_key[16];
976 unsigned char lm_session_key[16];
977 unsigned char pipe_session_key[16];
978
979 sampw = server_info->sam_account;
980
981 /* set up pointer indicating user/password failed to be
982 * found */
983 usr_info->ptr_user_info = 0;
984
985 user_sid = pdb_get_user_sid(sampw);
986 group_sid = pdb_get_group_sid(sampw);
987
988 if ((user_sid == NULL) || (group_sid == NULL)) {
989 DEBUG(1, ("_net_sam_logon: User without group or user SID\n"));
990 return NT_STATUS_UNSUCCESSFUL;
991 }
992
993 sid_copy(&domain_sid, user_sid);
994 sid_split_rid(&domain_sid, &user_rid);
995
996 if (!sid_peek_check_rid(&domain_sid, group_sid, &group_rid)) {
997 DEBUG(1, ("_net_sam_logon: user %s\\%s has user sid "
998 "%s\n but group sid %s.\n"
999 "The conflicting domain portions are not "
1000 "supported for NETLOGON calls\n",
1001 pdb_get_domain(sampw),
1002 pdb_get_username(sampw),
1003 sid_to_string(user_sid_string, user_sid),
1004 sid_to_string(group_sid_string, group_sid)));
1005 return NT_STATUS_UNSUCCESSFUL;
1006 }
1007
1008
1009 if(server_info->login_server) {
1010 pstrcpy(my_name, server_info->login_server);
1011 } else {
1012 pstrcpy(my_name, global_myname());
1013 }
1014
1015 status = nt_token_to_group_list(p->mem_ctx, &domain_sid,
1016 server_info->num_sids,
1017 server_info->sids,
1018 &num_gids, &gids);
1019
1020 if (!NT_STATUS_IS_OK(status)) {
1021 return status;
1022 }
1023
1024 if (server_info->user_session_key.length) {
1025 memcpy(user_session_key,
1026 server_info->user_session_key.data,
1027 MIN(sizeof(user_session_key),
1028 server_info->user_session_key.length));
1029 if (process_creds) {
1030 /* Get the pipe session key from the creds. */
1031 memcpy(pipe_session_key, p->dc->sess_key, 16);
1032 } else {
1033 /* Get the pipe session key from the schannel. */
1034 if (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL || p->auth.a_u.schannel_auth == NULL) {
1035 return NT_STATUS_INVALID_HANDLE;
1036 }
1037 memcpy(pipe_session_key, p->auth.a_u.schannel_auth->sess_key, 16);
1038 }
1039 SamOEMhash(user_session_key, pipe_session_key, 16);
1040 memset(pipe_session_key, '\0', 16);
1041 }
1042 if (server_info->lm_session_key.length) {
1043 memcpy(lm_session_key,
1044 server_info->lm_session_key.data,
1045 MIN(sizeof(lm_session_key),
1046 server_info->lm_session_key.length));
1047 if (process_creds) {
1048 /* Get the pipe session key from the creds. */
1049 memcpy(pipe_session_key, p->dc->sess_key, 16);
1050 } else {
1051 /* Get the pipe session key from the schannel. */
1052 if (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL || p->auth.a_u.schannel_auth == NULL) {
1053 return NT_STATUS_INVALID_HANDLE;
1054 }
1055 memcpy(pipe_session_key, p->auth.a_u.schannel_auth->sess_key, 16);
1056 }
1057 SamOEMhash(lm_session_key, pipe_session_key, 16);
1058 memset(pipe_session_key, '\0', 16);
1059 }
1060
1061 init_net_user_info3(p->mem_ctx, usr_info,
1062 user_rid,
1063 group_rid,
1064 pdb_get_username(sampw),
1065 pdb_get_fullname(sampw),
1066 pdb_get_homedir(sampw),
1067 pdb_get_dir_drive(sampw),
1068 pdb_get_logon_script(sampw),
1069 pdb_get_profile_path(sampw),
1070 pdb_get_logon_time(sampw),
1071 get_time_t_max(),
1072 get_time_t_max(),
1073 pdb_get_pass_last_set_time(sampw),
1074 pdb_get_pass_can_change_time(sampw),
1075 pdb_get_pass_must_change_time(sampw),
1076 0, /* logon_count */
1077 0, /* bad_pw_count */
1078 num_gids, /* uint32 num_groups */
1079 gids , /* DOM_GID *gids */
1080 LOGON_EXTRA_SIDS, /* uint32 user_flgs (?) */
1081 pdb_get_acct_ctrl(sampw),
1082 server_info->user_session_key.length ? user_session_key : NULL,
1083 server_info->lm_session_key.length ? lm_session_key : NULL,
1084 my_name , /* char *logon_srv */
1085 pdb_get_domain(sampw),
1086 &domain_sid); /* DOM_SID *dom_sid */
1087 ZERO_STRUCT(user_session_key);
1088 ZERO_STRUCT(lm_session_key);
1089 }
1090 TALLOC_FREE(server_info);
1091 return status;
1092}
1093
1094/*************************************************************************
1095 _net_sam_logon
1096 *************************************************************************/
1097
1098NTSTATUS _net_sam_logon(pipes_struct *p, NET_Q_SAM_LOGON *q_u, NET_R_SAM_LOGON *r_u)
1099{
1100 return _net_sam_logon_internal(p, q_u, r_u, True);
1101}
1102
1103/*************************************************************************
1104 _net_sam_logon_ex - no credential chaining. Map into net sam logon.
1105 *************************************************************************/
1106
1107NTSTATUS _net_sam_logon_ex(pipes_struct *p, NET_Q_SAM_LOGON_EX *q_u, NET_R_SAM_LOGON_EX *r_u)
1108{
1109 NET_Q_SAM_LOGON q;
1110 NET_R_SAM_LOGON r;
1111
1112 ZERO_STRUCT(q);
1113 ZERO_STRUCT(r);
1114
1115 /* Only allow this if the pipe is protected. */
1116 if (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) {
1117 DEBUG(0,("_net_sam_logon_ex: client %s not using schannel for netlogon\n",
1118 get_remote_machine_name() ));
1119 return NT_STATUS_INVALID_PARAMETER;
1120 }
1121
1122 /* Map a NET_Q_SAM_LOGON_EX to NET_Q_SAM_LOGON. */
1123 q.validation_level = q_u->validation_level;
1124
1125 /* Map a DOM_SAM_INFO_EX into a DOM_SAM_INFO with no creds. */
1126 q.sam_id.client.login = q_u->sam_id.client;
1127 q.sam_id.logon_level = q_u->sam_id.logon_level;
1128 q.sam_id.ctr = q_u->sam_id.ctr;
1129
1130 r_u->status = _net_sam_logon_internal(p, &q, &r, False);
1131
1132 if (!NT_STATUS_IS_OK(r_u->status)) {
1133 return r_u->status;
1134 }
1135
1136 /* Map the NET_R_SAM_LOGON to NET_R_SAM_LOGON_EX. */
1137 r_u->switch_value = r.switch_value;
1138 r_u->user = r.user;
1139 r_u->auth_resp = r.auth_resp;
1140 r_u->flags = 0; /* FIXME ! */
1141 return r_u->status;
1142}
1143
1144/*************************************************************************
1145 _ds_enum_dom_trusts
1146 *************************************************************************/
1147#if 0 /* JERRY -- not correct */
1148NTSTATUS _ds_enum_dom_trusts(pipes_struct *p, DS_Q_ENUM_DOM_TRUSTS *q_u,
1149 DS_R_ENUM_DOM_TRUSTS *r_u)
1150{
1151 NTSTATUS status = NT_STATUS_OK;
1152
1153 /* TODO: According to MSDN, the can only be executed against a
1154 DC or domain member running Windows 2000 or later. Need
1155 to test against a standalone 2k server and see what it
1156 does. A windows 2000 DC includes its own domain in the
1157 list. --jerry */
1158
1159 return status;
1160}
1161#endif /* JERRY */
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