f3200cbdd7dc15dee55eac53b8a31dcc1c2a141f
[tprouty/samba.git] / source3 / rpc_server / srv_netlog_nt.c
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
29 extern 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
38 static 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
58 NTSTATUS _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 /****************************************************************************
73 Send a message to smbd to do a sam synchronisation
74 **************************************************************************/
75
76 static 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
100 NTSTATUS _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
173 NTSTATUS _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
192 static 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
207 static 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 == False) {
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                 DEBUG(0,("get_md4pw: Workstation %s: account is not a trust account\n", mach_acct));
258                 TALLOC_FREE(sampass);
259                 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
260         }
261
262         switch (sec_chan_type) {
263                 case SEC_CHAN_BDC:
264                         if (!(acct_ctrl & ACB_SVRTRUST)) {
265                                 DEBUG(0,("get_md4pw: Workstation %s: BDC secure channel requested "
266                                          "but not a server trust account\n", mach_acct));
267                                 TALLOC_FREE(sampass);
268                                 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
269                         }
270                 case SEC_CHAN_WKSTA:
271                         if (!(acct_ctrl & ACB_WSTRUST)) {
272                                 DEBUG(0,("get_md4pw: Workstation %s: WORKSTATION secure channel requested "
273                                          "but not a workstation trust account\n", mach_acct));
274                                 TALLOC_FREE(sampass);
275                                 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
276                         }
277                 case SEC_CHAN_DOMAIN:
278                         if (!(acct_ctrl & ACB_DOMTRUST)) {
279                                 DEBUG(0,("get_md4pw: Workstation %s: DOMAIN secure channel requested "
280                                          "but not a interdomain trust account\n", mach_acct));
281                                 TALLOC_FREE(sampass);
282                                 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
283                         }
284                 default:
285                         break;
286         }
287
288         if ((pass = pdb_get_nt_passwd(sampass)) == NULL) {
289                 DEBUG(0,("get_md4pw: Workstation %s: account does not have a password\n", mach_acct));
290                 TALLOC_FREE(sampass);
291                 return NT_STATUS_LOGON_FAILURE;
292         }
293
294         memcpy(md4pw, pass, 16);
295         dump_data(5, md4pw, 16);
296
297         TALLOC_FREE(sampass);
298         
299         return NT_STATUS_OK;
300         
301
302 }
303
304 /*************************************************************************
305  _net_req_chal
306  *************************************************************************/
307
308 NTSTATUS _net_req_chal(pipes_struct *p, NET_Q_REQ_CHAL *q_u, NET_R_REQ_CHAL *r_u)
309 {
310         if (!p->dc) {
311                 p->dc = TALLOC_ZERO_P(p->pipe_state_mem_ctx, struct dcinfo);
312                 if (!p->dc) {
313                         return NT_STATUS_NO_MEMORY;
314                 }
315         } else {
316                 DEBUG(10,("_net_req_chal: new challenge requested. Clearing old state.\n"));
317                 ZERO_STRUCTP(p->dc);
318         }
319
320         rpcstr_pull(p->dc->remote_machine,
321                         q_u->uni_logon_clnt.buffer,
322                         sizeof(fstring),q_u->uni_logon_clnt.uni_str_len*2,0);
323
324         /* Save the client challenge to the server. */
325         memcpy(p->dc->clnt_chal.data, q_u->clnt_chal.data, sizeof(q_u->clnt_chal.data));
326
327         /* Create a server challenge for the client */
328         /* Set this to a random value. */
329         generate_random_buffer(p->dc->srv_chal.data, 8);
330         
331         /* set up the LSA REQUEST CHALLENGE response */
332         init_net_r_req_chal(r_u, &p->dc->srv_chal, NT_STATUS_OK);
333         
334         p->dc->challenge_sent = True;
335
336         return NT_STATUS_OK;
337 }
338
339 /*************************************************************************
340  init_net_r_auth:
341  *************************************************************************/
342
343 static void init_net_r_auth(NET_R_AUTH *r_a, DOM_CHAL *resp_cred, NTSTATUS status)
344 {
345         memcpy(r_a->srv_chal.data, resp_cred->data, sizeof(resp_cred->data));
346         r_a->status = status;
347 }
348
349 /*************************************************************************
350  _net_auth. Create the initial credentials.
351  *************************************************************************/
352
353 NTSTATUS _net_auth(pipes_struct *p, NET_Q_AUTH *q_u, NET_R_AUTH *r_u)
354 {
355         NTSTATUS status;
356         fstring mach_acct;
357         fstring remote_machine;
358         DOM_CHAL srv_chal_out;
359
360         if (!p->dc || !p->dc->challenge_sent) {
361                 return NT_STATUS_ACCESS_DENIED;
362         }
363
364         rpcstr_pull(mach_acct, q_u->clnt_id.uni_acct_name.buffer,sizeof(fstring),
365                                 q_u->clnt_id.uni_acct_name.uni_str_len*2,0);
366         rpcstr_pull(remote_machine, q_u->clnt_id.uni_comp_name.buffer,sizeof(fstring),
367                                 q_u->clnt_id.uni_comp_name.uni_str_len*2,0);
368
369         status = get_md4pw((char *)p->dc->mach_pw, mach_acct, q_u->clnt_id.sec_chan);
370         if (!NT_STATUS_IS_OK(status)) {
371                 DEBUG(0,("_net_auth: creds_server_check failed. Failed to "
372                         "get password for machine account %s "
373                         "from client %s: %s\n",
374                         mach_acct, remote_machine, nt_errstr(status) ));
375                 /* always return NT_STATUS_ACCESS_DENIED */
376                 return NT_STATUS_ACCESS_DENIED;
377         }
378
379         /* From the client / server challenges and md4 password, generate sess key */
380         creds_server_init(0,                    /* No neg flags. */
381                         p->dc,
382                         &p->dc->clnt_chal,      /* Stored client chal. */
383                         &p->dc->srv_chal,       /* Stored server chal. */
384                         p->dc->mach_pw,
385                         &srv_chal_out); 
386
387         /* Check client credentials are valid. */
388         if (!creds_server_check(p->dc, &q_u->clnt_chal)) {
389                 DEBUG(0,("_net_auth: creds_server_check failed. Rejecting auth "
390                         "request from client %s machine account %s\n",
391                         remote_machine, mach_acct ));
392                 return NT_STATUS_ACCESS_DENIED;
393         }
394
395         fstrcpy(p->dc->mach_acct, mach_acct);
396         fstrcpy(p->dc->remote_machine, remote_machine);
397         p->dc->authenticated = True;
398
399         /* set up the LSA AUTH response */
400         /* Return the server credentials. */
401         init_net_r_auth(r_u, &srv_chal_out, NT_STATUS_OK);
402
403         return r_u->status;
404 }
405
406 /*************************************************************************
407  init_net_r_auth_2:
408  *************************************************************************/
409
410 static void init_net_r_auth_2(NET_R_AUTH_2 *r_a,
411                               DOM_CHAL *resp_cred, NEG_FLAGS *flgs, NTSTATUS status)
412 {
413         memcpy(r_a->srv_chal.data, resp_cred->data, sizeof(resp_cred->data));
414         memcpy(&r_a->srv_flgs, flgs, sizeof(r_a->srv_flgs));
415         r_a->status = status;
416 }
417
418 /*************************************************************************
419  _net_auth_2
420  *************************************************************************/
421
422 NTSTATUS _net_auth_2(pipes_struct *p, NET_Q_AUTH_2 *q_u, NET_R_AUTH_2 *r_u)
423 {
424         NTSTATUS status;
425         NEG_FLAGS srv_flgs;
426         fstring mach_acct;
427         fstring remote_machine;
428         DOM_CHAL srv_chal_out;
429
430         rpcstr_pull(mach_acct, q_u->clnt_id.uni_acct_name.buffer,sizeof(fstring),
431                                 q_u->clnt_id.uni_acct_name.uni_str_len*2,0);
432
433         /* We use this as the key to store the creds. */
434         rpcstr_pull(remote_machine, q_u->clnt_id.uni_comp_name.buffer,sizeof(fstring),
435                                 q_u->clnt_id.uni_comp_name.uni_str_len*2,0);
436
437         if (!p->dc || !p->dc->challenge_sent) {
438                 DEBUG(0,("_net_auth2: no challenge sent to client %s\n",
439                         remote_machine ));
440                 return NT_STATUS_ACCESS_DENIED;
441         }
442
443         if ( (lp_server_schannel() == True) &&
444              ((q_u->clnt_flgs.neg_flags & NETLOGON_NEG_SCHANNEL) == 0) ) {
445
446                 /* schannel must be used, but client did not offer it. */
447                 DEBUG(0,("_net_auth2: schannel required but client failed "
448                         "to offer it. Client was %s\n",
449                         mach_acct ));
450                 return NT_STATUS_ACCESS_DENIED;
451         }
452
453         status = get_md4pw((char *)p->dc->mach_pw, mach_acct, q_u->clnt_id.sec_chan);
454         if (!NT_STATUS_IS_OK(status)) {
455                 DEBUG(0,("_net_auth2: failed to get machine password for "
456                         "account %s: %s\n",
457                         mach_acct, nt_errstr(status) ));
458                 /* always return NT_STATUS_ACCESS_DENIED */
459                 return NT_STATUS_ACCESS_DENIED;
460         }
461
462         /* From the client / server challenges and md4 password, generate sess key */
463         creds_server_init(q_u->clnt_flgs.neg_flags,
464                         p->dc,
465                         &p->dc->clnt_chal,      /* Stored client chal. */
466                         &p->dc->srv_chal,       /* Stored server chal. */
467                         p->dc->mach_pw,
468                         &srv_chal_out); 
469
470         /* Check client credentials are valid. */
471         if (!creds_server_check(p->dc, &q_u->clnt_chal)) {
472                 DEBUG(0,("_net_auth2: creds_server_check failed. Rejecting auth "
473                         "request from client %s machine account %s\n",
474                         remote_machine, mach_acct ));
475                 return NT_STATUS_ACCESS_DENIED;
476         }
477
478         srv_flgs.neg_flags = 0x000001ff;
479
480         if (lp_server_schannel() != False) {
481                 srv_flgs.neg_flags |= NETLOGON_NEG_SCHANNEL;
482         }
483
484         /* set up the LSA AUTH 2 response */
485         init_net_r_auth_2(r_u, &srv_chal_out, &srv_flgs, NT_STATUS_OK);
486
487         fstrcpy(p->dc->mach_acct, mach_acct);
488         fstrcpy(p->dc->remote_machine, remote_machine);
489         fstrcpy(p->dc->domain, lp_workgroup() );
490
491         p->dc->authenticated = True;
492
493         /* Store off the state so we can continue after client disconnect. */
494         become_root();
495         secrets_store_schannel_session_info(p->mem_ctx,
496                                         remote_machine,
497                                         p->dc);
498         unbecome_root();
499
500         return r_u->status;
501 }
502
503 /*************************************************************************
504  _net_srv_pwset
505  *************************************************************************/
506
507 NTSTATUS _net_srv_pwset(pipes_struct *p, NET_Q_SRV_PWSET *q_u, NET_R_SRV_PWSET *r_u)
508 {
509         NTSTATUS status = NT_STATUS_ACCESS_DENIED;
510         fstring remote_machine;
511         struct samu *sampass=NULL;
512         BOOL ret = False;
513         unsigned char pwd[16];
514         int i;
515         uint32 acct_ctrl;
516         DOM_CRED cred_out;
517         const uchar *old_pw;
518
519         DEBUG(5,("_net_srv_pwset: %d\n", __LINE__));
520
521         /* We need the remote machine name for the creds lookup. */
522         rpcstr_pull(remote_machine,q_u->clnt_id.login.uni_comp_name.buffer,
523                     sizeof(remote_machine),q_u->clnt_id.login.uni_comp_name.uni_str_len*2,0);
524
525         if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
526                 /* 'server schannel = yes' should enforce use of
527                    schannel, the client did offer it in auth2, but
528                    obviously did not use it. */
529                 DEBUG(0,("_net_srv_pwset: client %s not using schannel for netlogon\n",
530                         remote_machine ));
531                 return NT_STATUS_ACCESS_DENIED;
532         }
533
534         if (!p->dc) {
535                 /* Restore the saved state of the netlogon creds. */
536                 become_root();
537                 ret = secrets_restore_schannel_session_info(p->pipe_state_mem_ctx,
538                                                         remote_machine,
539                                                         &p->dc);
540                 unbecome_root();
541                 if (!ret) {
542                         return NT_STATUS_INVALID_HANDLE;
543                 }
544         }
545
546         if (!p->dc || !p->dc->authenticated) {
547                 return NT_STATUS_INVALID_HANDLE;
548         }
549
550         DEBUG(3,("_net_srv_pwset: Server Password Set by remote machine:[%s] on account [%s]\n",
551                         remote_machine, p->dc->mach_acct));
552         
553         /* Step the creds chain forward. */
554         if (!creds_server_step(p->dc, &q_u->clnt_id.cred, &cred_out)) {
555                 DEBUG(2,("_net_srv_pwset: creds_server_step failed. Rejecting auth "
556                         "request from client %s machine account %s\n",
557                         remote_machine, p->dc->mach_acct ));
558                 return NT_STATUS_INVALID_PARAMETER;
559         }
560
561         /* We must store the creds state after an update. */
562         become_root();
563         secrets_store_schannel_session_info(p->pipe_state_mem_ctx,
564                                                 remote_machine,
565                                                 p->dc);
566         if ( (sampass = samu_new( NULL )) != NULL ) {
567                 ret = pdb_getsampwnam(sampass, p->dc->mach_acct);
568         }
569         unbecome_root();
570
571         if ( !sampass ) 
572                 return NT_STATUS_NO_MEMORY;
573
574         /* Ensure the account exists and is a machine account. */
575         
576         acct_ctrl = pdb_get_acct_ctrl(sampass);
577
578         if (!(ret 
579               && (acct_ctrl & ACB_WSTRUST ||
580                       acct_ctrl & ACB_SVRTRUST ||
581                       acct_ctrl & ACB_DOMTRUST))) {
582                 TALLOC_FREE(sampass);
583                 return NT_STATUS_NO_SUCH_USER;
584         }
585         
586         if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED) {
587                 TALLOC_FREE(sampass);
588                 return NT_STATUS_ACCOUNT_DISABLED;
589         }
590
591         /* Woah - what does this to to the credential chain ? JRA */
592         cred_hash3( pwd, q_u->pwd, p->dc->sess_key, 0);
593
594         DEBUG(100,("Server password set : new given value was :\n"));
595         for(i = 0; i < sizeof(pwd); i++)
596                 DEBUG(100,("%02X ", pwd[i]));
597         DEBUG(100,("\n"));
598
599         old_pw = pdb_get_nt_passwd(sampass);
600
601         if (old_pw && memcmp(pwd, old_pw, 16) == 0) {
602                 /* Avoid backend modificiations and other fun if the 
603                    client changed the password to the *same thing* */
604
605                 ret = True;
606         } else {
607
608                 /* LM password should be NULL for machines */
609                 if (!pdb_set_lanman_passwd(sampass, NULL, PDB_CHANGED)) {
610                         TALLOC_FREE(sampass);
611                         return NT_STATUS_NO_MEMORY;
612                 }
613                 
614                 if (!pdb_set_nt_passwd(sampass, pwd, PDB_CHANGED)) {
615                         TALLOC_FREE(sampass);
616                         return NT_STATUS_NO_MEMORY;
617                 }
618                 
619                 if (!pdb_set_pass_changed_now(sampass)) {
620                         TALLOC_FREE(sampass);
621                         /* Not quite sure what this one qualifies as, but this will do */
622                         return NT_STATUS_UNSUCCESSFUL; 
623                 }
624                 
625                 become_root();
626                 r_u->status = pdb_update_sam_account (sampass);
627                 unbecome_root();
628         }
629
630         /* set up the LSA Server Password Set response */
631         init_net_r_srv_pwset(r_u, &cred_out, status);
632
633         TALLOC_FREE(sampass);
634         return r_u->status;
635 }
636
637 /*************************************************************************
638  _net_sam_logoff:
639  *************************************************************************/
640
641 NTSTATUS _net_sam_logoff(pipes_struct *p, NET_Q_SAM_LOGOFF *q_u, NET_R_SAM_LOGOFF *r_u)
642 {
643         fstring remote_machine;
644
645         if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
646                 /* 'server schannel = yes' should enforce use of
647                    schannel, the client did offer it in auth2, but
648                    obviously did not use it. */
649                 DEBUG(0,("_net_sam_logoff: client %s not using schannel for netlogon\n",
650                         get_remote_machine_name() ));
651                 return NT_STATUS_ACCESS_DENIED;
652         }
653
654
655         if (!get_valid_user_struct(p->vuid))
656                 return NT_STATUS_NO_SUCH_USER;
657
658         /* Get the remote machine name for the creds store. */
659         rpcstr_pull(remote_machine,q_u->sam_id.client.login.uni_comp_name.buffer,
660                     sizeof(remote_machine),q_u->sam_id.client.login.uni_comp_name.uni_str_len*2,0);
661
662         if (!p->dc) {
663                 /* Restore the saved state of the netlogon creds. */
664                 BOOL ret;
665
666                 become_root();
667                 ret = secrets_restore_schannel_session_info(p->pipe_state_mem_ctx,
668                                                 remote_machine,
669                                                 &p->dc);
670                 unbecome_root();
671                 if (!ret) {
672                         return NT_STATUS_INVALID_HANDLE;
673                 }
674         }
675
676         if (!p->dc || !p->dc->authenticated) {
677                 return NT_STATUS_INVALID_HANDLE;
678         }
679
680         r_u->buffer_creds = 1; /* yes, we have valid server credentials */
681
682         /* checks and updates credentials.  creates reply credentials */
683         if (!creds_server_step(p->dc, &q_u->sam_id.client.cred, &r_u->srv_creds)) {
684                 DEBUG(2,("_net_sam_logoff: creds_server_step failed. Rejecting auth "
685                         "request from client %s machine account %s\n",
686                         remote_machine, p->dc->mach_acct ));
687                 return NT_STATUS_INVALID_PARAMETER;
688         }
689
690         /* We must store the creds state after an update. */
691         become_root();
692         secrets_store_schannel_session_info(p->pipe_state_mem_ctx,
693                                         remote_machine,
694                                         p->dc);
695         unbecome_root();
696
697         r_u->status = NT_STATUS_OK;
698         return r_u->status;
699 }
700
701 /*******************************************************************
702  gets a domain user's groups from their already-calculated NT_USER_TOKEN
703  ********************************************************************/
704
705 static NTSTATUS nt_token_to_group_list(TALLOC_CTX *mem_ctx,
706                                        const DOM_SID *domain_sid,
707                                        size_t num_sids,
708                                        const DOM_SID *sids,
709                                        int *numgroups, DOM_GID **pgids) 
710 {
711         int i;
712
713         *numgroups=0;
714         *pgids = NULL;
715
716         for (i=0; i<num_sids; i++) {
717                 DOM_GID gid;
718                 if (!sid_peek_check_rid(domain_sid, &sids[i], &gid.g_rid)) {
719                         continue;
720                 }
721                 gid.attr = (SE_GROUP_MANDATORY|SE_GROUP_ENABLED_BY_DEFAULT|
722                             SE_GROUP_ENABLED);
723                 ADD_TO_ARRAY(mem_ctx, DOM_GID, gid, pgids, numgroups);
724                 if (*pgids == NULL) {
725                         return NT_STATUS_NO_MEMORY;
726                 }
727         }
728         return NT_STATUS_OK;
729 }
730
731 /*************************************************************************
732  _net_sam_logon
733  *************************************************************************/
734
735 static NTSTATUS _net_sam_logon_internal(pipes_struct *p,
736                                         NET_Q_SAM_LOGON *q_u,
737                                         NET_R_SAM_LOGON *r_u,
738                                         BOOL process_creds)
739 {
740         NTSTATUS status = NT_STATUS_OK;
741         NET_USER_INFO_3 *usr_info = NULL;
742         NET_ID_INFO_CTR *ctr = q_u->sam_id.ctr;
743         UNISTR2 *uni_samlogon_user = NULL;
744         UNISTR2 *uni_samlogon_domain = NULL;
745         UNISTR2 *uni_samlogon_workstation = NULL;
746         fstring nt_username, nt_domain, nt_workstation;
747         auth_usersupplied_info *user_info = NULL;
748         auth_serversupplied_info *server_info = NULL;
749         struct samu *sampw;
750         struct auth_context *auth_context = NULL;
751          
752         if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
753                 /* 'server schannel = yes' should enforce use of
754                    schannel, the client did offer it in auth2, but
755                    obviously did not use it. */
756                 DEBUG(0,("_net_sam_logon_internal: client %s not using schannel for netlogon\n",
757                         get_remote_machine_name() ));
758                 return NT_STATUS_ACCESS_DENIED;
759         }
760
761         usr_info = TALLOC_P(p->mem_ctx, NET_USER_INFO_3);
762         if (!usr_info) {
763                 return NT_STATUS_NO_MEMORY;
764         }
765
766         ZERO_STRUCTP(usr_info);
767
768         /* store the user information, if there is any. */
769         r_u->user = usr_info;
770         r_u->auth_resp = 1; /* authoritative response */
771         if (q_u->validation_level != 2 && q_u->validation_level != 3) {
772                 DEBUG(0,("_net_sam_logon: bad validation_level value %d.\n", (int)q_u->validation_level ));
773                 return NT_STATUS_ACCESS_DENIED;
774         }
775         /* We handle the return of USER_INFO_2 instead of 3 in the parse return. Sucks, I know... */
776         r_u->switch_value = q_u->validation_level; /* indicates type of validation user info */
777         r_u->buffer_creds = 1; /* Ensure we always return server creds. */
778  
779         if (!get_valid_user_struct(p->vuid))
780                 return NT_STATUS_NO_SUCH_USER;
781
782         if (process_creds) {
783                 fstring remote_machine;
784
785                 /* Get the remote machine name for the creds store. */
786                 /* Note this is the remote machine this request is coming from (member server),
787                    not neccessarily the workstation name the user is logging onto.
788                 */
789                 rpcstr_pull(remote_machine,q_u->sam_id.client.login.uni_comp_name.buffer,
790                     sizeof(remote_machine),q_u->sam_id.client.login.uni_comp_name.uni_str_len*2,0);
791
792                 if (!p->dc) {
793                         /* Restore the saved state of the netlogon creds. */
794                         BOOL ret;
795
796                         become_root();
797                         ret = secrets_restore_schannel_session_info(p->pipe_state_mem_ctx,
798                                         remote_machine,
799                                         &p->dc);
800                         unbecome_root();
801                         if (!ret) {
802                                 return NT_STATUS_INVALID_HANDLE;
803                         }
804                 }
805
806                 if (!p->dc || !p->dc->authenticated) {
807                         return NT_STATUS_INVALID_HANDLE;
808                 }
809
810                 /* checks and updates credentials.  creates reply credentials */
811                 if (!creds_server_step(p->dc, &q_u->sam_id.client.cred,  &r_u->srv_creds)) {
812                         DEBUG(2,("_net_sam_logon: creds_server_step failed. Rejecting auth "
813                                 "request from client %s machine account %s\n",
814                                 remote_machine, p->dc->mach_acct ));
815                         return NT_STATUS_INVALID_PARAMETER;
816                 }
817
818                 /* We must store the creds state after an update. */
819                 become_root();
820                 secrets_store_schannel_session_info(p->pipe_state_mem_ctx,
821                                         remote_machine,
822                                         p->dc);
823                 unbecome_root();
824         }
825
826         switch (q_u->sam_id.logon_level) {
827         case INTERACTIVE_LOGON_TYPE:
828                 uni_samlogon_user = &ctr->auth.id1.uni_user_name;
829                 uni_samlogon_domain = &ctr->auth.id1.uni_domain_name;
830
831                 uni_samlogon_workstation = &ctr->auth.id1.uni_wksta_name;
832             
833                 DEBUG(3,("SAM Logon (Interactive). Domain:[%s].  ", lp_workgroup()));
834                 break;
835         case NET_LOGON_TYPE:
836                 uni_samlogon_user = &ctr->auth.id2.uni_user_name;
837                 uni_samlogon_domain = &ctr->auth.id2.uni_domain_name;
838                 uni_samlogon_workstation = &ctr->auth.id2.uni_wksta_name;
839             
840                 DEBUG(3,("SAM Logon (Network). Domain:[%s].  ", lp_workgroup()));
841                 break;
842         default:
843                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
844                 return NT_STATUS_INVALID_INFO_CLASS;
845         } /* end switch */
846
847         rpcstr_pull(nt_username,uni_samlogon_user->buffer,sizeof(nt_username),uni_samlogon_user->uni_str_len*2,0);
848         rpcstr_pull(nt_domain,uni_samlogon_domain->buffer,sizeof(nt_domain),uni_samlogon_domain->uni_str_len*2,0);
849         rpcstr_pull(nt_workstation,uni_samlogon_workstation->buffer,sizeof(nt_workstation),uni_samlogon_workstation->uni_str_len*2,0);
850
851         DEBUG(3,("User:[%s@%s] Requested Domain:[%s]\n", nt_username, nt_workstation, nt_domain));
852         fstrcpy(current_user_info.smb_name, nt_username);
853         sub_set_smb_name(nt_username);
854      
855         DEBUG(5,("Attempting validation level %d for unmapped username %s.\n", q_u->sam_id.ctr->switch_value, nt_username));
856
857         status = NT_STATUS_OK;
858         
859         switch (ctr->switch_value) {
860         case NET_LOGON_TYPE:
861         {
862                 const char *wksname = nt_workstation;
863                 
864                 if (!NT_STATUS_IS_OK(status = make_auth_context_fixed(&auth_context, ctr->auth.id2.lm_chal))) {
865                         return status;
866                 }
867
868                 /* For a network logon, the workstation name comes in with two
869                  * backslashes in the front. Strip them if they are there. */
870
871                 if (*wksname == '\\') wksname++;
872                 if (*wksname == '\\') wksname++;
873
874                 /* Standard challenge/response authenticaion */
875                 if (!make_user_info_netlogon_network(&user_info, 
876                                                      nt_username, nt_domain, 
877                                                      wksname,
878                                                      ctr->auth.id2.param_ctrl,
879                                                      ctr->auth.id2.lm_chal_resp.buffer,
880                                                      ctr->auth.id2.lm_chal_resp.str_str_len,
881                                                      ctr->auth.id2.nt_chal_resp.buffer,
882                                                      ctr->auth.id2.nt_chal_resp.str_str_len)) {
883                         status = NT_STATUS_NO_MEMORY;
884                 }       
885                 break;
886         }
887         case INTERACTIVE_LOGON_TYPE:
888                 /* 'Interactive' authentication, supplies the password in its
889                    MD4 form, encrypted with the session key.  We will convert
890                    this to challenge/response for the auth subsystem to chew
891                    on */
892         {
893                 const uint8 *chal;
894                 
895                 if (!NT_STATUS_IS_OK(status = make_auth_context_subsystem(&auth_context))) {
896                         return status;
897                 }
898                 
899                 chal = auth_context->get_ntlm_challenge(auth_context);
900
901                 if (!make_user_info_netlogon_interactive(&user_info, 
902                                                          nt_username, nt_domain, 
903                                                          nt_workstation, 
904                                                          ctr->auth.id1.param_ctrl,
905                                                          chal,
906                                                          ctr->auth.id1.lm_owf.data, 
907                                                          ctr->auth.id1.nt_owf.data, 
908                                                          p->dc->sess_key)) {
909                         status = NT_STATUS_NO_MEMORY;
910                 }
911                 break;
912         }
913         default:
914                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
915                 return NT_STATUS_INVALID_INFO_CLASS;
916         } /* end switch */
917         
918         if ( NT_STATUS_IS_OK(status) ) {
919                 status = auth_context->check_ntlm_password(auth_context, 
920                         user_info, &server_info);
921         }
922
923         (auth_context->free)(&auth_context);    
924         free_user_info(&user_info);
925         
926         DEBUG(5, ("_net_sam_logon: check_password returned status %s\n", 
927                   nt_errstr(status)));
928
929         /* Check account and password */
930     
931         if (!NT_STATUS_IS_OK(status)) {
932                 /* If we don't know what this domain is, we need to 
933                    indicate that we are not authoritative.  This 
934                    allows the client to decide if it needs to try 
935                    a local user.  Fix by jpjanosi@us.ibm.com, #2976 */
936                 if ( NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER) 
937                      && !strequal(nt_domain, get_global_sam_name())
938                      && !is_trusted_domain(nt_domain) )
939                         r_u->auth_resp = 0; /* We are not authoritative */
940
941                 TALLOC_FREE(server_info);
942                 return status;
943         }
944
945         if (server_info->guest) {
946                 /* We don't like guest domain logons... */
947                 DEBUG(5,("_net_sam_logon: Attempted domain logon as GUEST "
948                          "denied.\n"));
949                 TALLOC_FREE(server_info);
950                 return NT_STATUS_LOGON_FAILURE;
951         }
952
953         /* This is the point at which, if the login was successful, that
954            the SAM Local Security Authority should record that the user is
955            logged in to the domain.  */
956     
957         {
958                 DOM_GID *gids = NULL;
959                 const DOM_SID *user_sid = NULL;
960                 const DOM_SID *group_sid = NULL;
961                 DOM_SID domain_sid;
962                 uint32 user_rid, group_rid; 
963
964                 int num_gids = 0;
965                 pstring my_name;
966                 fstring user_sid_string;
967                 fstring group_sid_string;
968                 unsigned char user_session_key[16];
969                 unsigned char lm_session_key[16];
970                 unsigned char pipe_session_key[16];
971
972                 sampw = server_info->sam_account;
973
974                 /* set up pointer indicating user/password failed to be
975                  * found */
976                 usr_info->ptr_user_info = 0;
977
978                 user_sid = pdb_get_user_sid(sampw);
979                 group_sid = pdb_get_group_sid(sampw);
980
981                 sid_copy(&domain_sid, user_sid);
982                 sid_split_rid(&domain_sid, &user_rid);
983
984                 if (!sid_peek_check_rid(&domain_sid, group_sid, &group_rid)) {
985                         DEBUG(1, ("_net_sam_logon: user %s\\%s has user sid "
986                                   "%s\n but group sid %s.\n"
987                                   "The conflicting domain portions are not "
988                                   "supported for NETLOGON calls\n",         
989                                   pdb_get_domain(sampw),
990                                   pdb_get_username(sampw),
991                                   sid_to_string(user_sid_string, user_sid),
992                                   sid_to_string(group_sid_string, group_sid)));
993                         return NT_STATUS_UNSUCCESSFUL;
994                 }
995                 
996                 
997                 if(server_info->login_server) {
998                         pstrcpy(my_name, server_info->login_server);
999                 } else {
1000                         pstrcpy(my_name, global_myname());
1001                 }
1002
1003                 status = nt_token_to_group_list(p->mem_ctx, &domain_sid,
1004                                                 server_info->num_sids,
1005                                                 server_info->sids,
1006                                                 &num_gids, &gids);
1007
1008                 if (!NT_STATUS_IS_OK(status)) {
1009                         return status;
1010                 }
1011
1012                 if (server_info->user_session_key.length) {
1013                         memcpy(user_session_key,
1014                                server_info->user_session_key.data, 
1015                                MIN(sizeof(user_session_key),
1016                                    server_info->user_session_key.length));
1017                         if (process_creds) {
1018                                 /* Get the pipe session key from the creds. */
1019                                 memcpy(pipe_session_key, p->dc->sess_key, 16);
1020                         } else {
1021                                 /* Get the pipe session key from the schannel. */
1022                                 if (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL || p->auth.a_u.schannel_auth == NULL) {
1023                                         return NT_STATUS_INVALID_HANDLE;
1024                                 }
1025                                 memcpy(pipe_session_key, p->auth.a_u.schannel_auth->sess_key, 16);
1026                         }
1027                         SamOEMhash(user_session_key, pipe_session_key, 16);
1028                         memset(pipe_session_key, '\0', 16);
1029                 }
1030                 if (server_info->lm_session_key.length) {
1031                         memcpy(lm_session_key,
1032                                server_info->lm_session_key.data, 
1033                                MIN(sizeof(lm_session_key),
1034                                    server_info->lm_session_key.length));
1035                         if (process_creds) {
1036                                 /* Get the pipe session key from the creds. */
1037                                 memcpy(pipe_session_key, p->dc->sess_key, 16);
1038                         } else {
1039                                 /* Get the pipe session key from the schannel. */
1040                                 if (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL || p->auth.a_u.schannel_auth == NULL) {
1041                                         return NT_STATUS_INVALID_HANDLE;
1042                                 }
1043                                 memcpy(pipe_session_key, p->auth.a_u.schannel_auth->sess_key, 16);
1044                         }
1045                         SamOEMhash(lm_session_key, pipe_session_key, 16);
1046                         memset(pipe_session_key, '\0', 16);
1047                 }
1048                 
1049                 init_net_user_info3(p->mem_ctx, usr_info, 
1050                                     user_rid,
1051                                     group_rid,   
1052                                     pdb_get_username(sampw),
1053                                     pdb_get_fullname(sampw),
1054                                     pdb_get_homedir(sampw),
1055                                     pdb_get_dir_drive(sampw),
1056                                     pdb_get_logon_script(sampw),
1057                                     pdb_get_profile_path(sampw),
1058                                     pdb_get_logon_time(sampw),
1059                                     get_time_t_max(),
1060                                     get_time_t_max(),
1061                                     pdb_get_pass_last_set_time(sampw),
1062                                     pdb_get_pass_can_change_time(sampw),
1063                                     pdb_get_pass_must_change_time(sampw),
1064                                     0, /* logon_count */
1065                                     0, /* bad_pw_count */
1066                                     num_gids,    /* uint32 num_groups */
1067                                     gids    , /* DOM_GID *gids */
1068                                     LOGON_EXTRA_SIDS, /* uint32 user_flgs (?) */
1069                                     pdb_get_acct_ctrl(sampw),
1070                                     server_info->user_session_key.length ? user_session_key : NULL,
1071                                     server_info->lm_session_key.length ? lm_session_key : NULL,
1072                                     my_name     , /* char *logon_srv */
1073                                     pdb_get_domain(sampw),
1074                                     &domain_sid);     /* DOM_SID *dom_sid */  
1075                 ZERO_STRUCT(user_session_key);
1076                 ZERO_STRUCT(lm_session_key);
1077         }
1078         TALLOC_FREE(server_info);
1079         return status;
1080 }
1081
1082 /*************************************************************************
1083  _net_sam_logon
1084  *************************************************************************/
1085
1086 NTSTATUS _net_sam_logon(pipes_struct *p, NET_Q_SAM_LOGON *q_u, NET_R_SAM_LOGON *r_u)
1087 {
1088         return _net_sam_logon_internal(p, q_u, r_u, True);
1089 }
1090  
1091 /*************************************************************************
1092  _net_sam_logon_ex - no credential chaining. Map into net sam logon.
1093  *************************************************************************/
1094
1095 NTSTATUS _net_sam_logon_ex(pipes_struct *p, NET_Q_SAM_LOGON_EX *q_u, NET_R_SAM_LOGON_EX *r_u)
1096 {
1097         NET_Q_SAM_LOGON q;
1098         NET_R_SAM_LOGON r;
1099
1100         ZERO_STRUCT(q);
1101         ZERO_STRUCT(r);
1102
1103         /* Only allow this if the pipe is protected. */
1104         if (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) {
1105                 DEBUG(0,("_net_sam_logon_ex: client %s not using schannel for netlogon\n",
1106                         get_remote_machine_name() ));
1107                 return NT_STATUS_INVALID_PARAMETER;
1108         }
1109
1110         /* Map a NET_Q_SAM_LOGON_EX to NET_Q_SAM_LOGON. */
1111         q.validation_level = q_u->validation_level;
1112
1113         /* Map a DOM_SAM_INFO_EX into a DOM_SAM_INFO with no creds. */
1114         q.sam_id.client.login = q_u->sam_id.client;
1115         q.sam_id.logon_level = q_u->sam_id.logon_level;
1116         q.sam_id.ctr = q_u->sam_id.ctr;
1117
1118         r_u->status = _net_sam_logon_internal(p, &q, &r, False);
1119
1120         if (!NT_STATUS_IS_OK(r_u->status)) {
1121                 return r_u->status;
1122         }
1123
1124         /* Map the NET_R_SAM_LOGON to NET_R_SAM_LOGON_EX. */
1125         r_u->switch_value = r.switch_value;
1126         r_u->user = r.user;
1127         r_u->auth_resp = r.auth_resp;
1128         r_u->flags = 0; /* FIXME ! */
1129         return r_u->status;
1130 }
1131
1132 /*************************************************************************
1133  _ds_enum_dom_trusts
1134  *************************************************************************/
1135 #if 0   /* JERRY -- not correct */
1136 NTSTATUS _ds_enum_dom_trusts(pipes_struct *p, DS_Q_ENUM_DOM_TRUSTS *q_u,
1137                              DS_R_ENUM_DOM_TRUSTS *r_u)
1138 {
1139         NTSTATUS status = NT_STATUS_OK;
1140
1141         /* TODO: According to MSDN, the can only be executed against a 
1142            DC or domain member running Windows 2000 or later.  Need
1143            to test against a standalone 2k server and see what it 
1144            does.  A windows 2000 DC includes its own domain in the 
1145            list.  --jerry */
1146
1147         return status;
1148 }
1149 #endif  /* JERRY */