91566d325cfbc9101f6935def994838ceb4d4c93
[kai/samba-autobuild/.git] / source / 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 BOOL get_md4pw(char *md4pw, char *mach_acct)
208 {
209         SAM_ACCOUNT *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(!NT_STATUS_IS_OK(pdb_init_sam(&sampass)))
233                 return False;
234
235         /* JRA. This is ok as it is only used for generating the challenge. */
236         become_root();
237         ret=pdb_getsampwnam(sampass, mach_acct);
238         unbecome_root();
239  
240         if (ret==False) {
241                 DEBUG(0,("get_md4pw: Workstation %s: no account in domain\n", mach_acct));
242                 pdb_free_sam(&sampass);
243                 return False;
244         }
245
246         acct_ctrl = pdb_get_acct_ctrl(sampass);
247         if (!(acct_ctrl & ACB_DISABLED) &&
248             ((acct_ctrl & ACB_DOMTRUST) ||
249              (acct_ctrl & ACB_WSTRUST) ||
250              (acct_ctrl & ACB_SVRTRUST)) &&
251             ((pass=pdb_get_nt_passwd(sampass)) != NULL)) {
252                 memcpy(md4pw, pass, 16);
253                 dump_data(5, md4pw, 16);
254                 pdb_free_sam(&sampass);
255                 return True;
256         }
257         
258         DEBUG(0,("get_md4pw: Workstation %s: no account in domain\n", mach_acct));
259         pdb_free_sam(&sampass);
260         return False;
261
262 }
263
264 /*************************************************************************
265  _net_req_chal
266  *************************************************************************/
267
268 NTSTATUS _net_req_chal(pipes_struct *p, NET_Q_REQ_CHAL *q_u, NET_R_REQ_CHAL *r_u)
269 {
270         if (!p->dc) {
271                 p->dc = TALLOC_ZERO_P(p->pipe_state_mem_ctx, struct dcinfo);
272                 if (!p->dc) {
273                         return NT_STATUS_NO_MEMORY;
274                 }
275         } else {
276                 DEBUG(10,("_net_req_chal: new challenge requested. Clearing old state.\n"));
277                 ZERO_STRUCTP(p->dc);
278         }
279
280         rpcstr_pull(p->dc->remote_machine,
281                         q_u->uni_logon_clnt.buffer,
282                         sizeof(fstring),q_u->uni_logon_clnt.uni_str_len*2,0);
283
284         /* Save the client challenge to the server. */
285         memcpy(p->dc->clnt_chal.data, q_u->clnt_chal.data, sizeof(q_u->clnt_chal.data));
286
287         /* Create a server challenge for the client */
288         /* Set this to a random value. */
289         generate_random_buffer(p->dc->srv_chal.data, 8);
290         
291         /* set up the LSA REQUEST CHALLENGE response */
292         init_net_r_req_chal(r_u, &p->dc->srv_chal, NT_STATUS_OK);
293         
294         p->dc->challenge_sent = True;
295
296         return NT_STATUS_OK;
297 }
298
299 /*************************************************************************
300  init_net_r_auth:
301  *************************************************************************/
302
303 static void init_net_r_auth(NET_R_AUTH *r_a, DOM_CHAL *resp_cred, NTSTATUS status)
304 {
305         memcpy(r_a->srv_chal.data, resp_cred->data, sizeof(resp_cred->data));
306         r_a->status = status;
307 }
308
309 /*************************************************************************
310  _net_auth. Create the initial credentials.
311  *************************************************************************/
312
313 NTSTATUS _net_auth(pipes_struct *p, NET_Q_AUTH *q_u, NET_R_AUTH *r_u)
314 {
315         fstring mach_acct;
316         fstring remote_machine;
317         DOM_CHAL srv_chal_out;
318
319         if (!p->dc || !p->dc->challenge_sent) {
320                 return NT_STATUS_ACCESS_DENIED;
321         }
322
323         rpcstr_pull(mach_acct, q_u->clnt_id.uni_acct_name.buffer,sizeof(fstring),
324                                 q_u->clnt_id.uni_acct_name.uni_str_len*2,0);
325         rpcstr_pull(remote_machine, q_u->clnt_id.uni_comp_name.buffer,sizeof(fstring),
326                                 q_u->clnt_id.uni_comp_name.uni_str_len*2,0);
327
328         if (!get_md4pw((char *)p->dc->mach_pw, mach_acct)) {
329                 DEBUG(0,("_net_auth: creds_server_check failed. Failed to "
330                         "get pasword for machine account %s "
331                         "from client %s\n",
332                         mach_acct, remote_machine ));
333                 return NT_STATUS_ACCESS_DENIED;
334         }
335
336         /* From the client / server challenges and md4 password, generate sess key */
337         creds_server_init(p->dc,
338                         &p->dc->clnt_chal,      /* Stored client chal. */
339                         &p->dc->srv_chal,       /* Stored server chal. */
340                         (const char *)p->dc->mach_pw,
341                         &srv_chal_out); 
342
343         /* Check client credentials are valid. */
344         if (!creds_server_check(p->dc, &q_u->clnt_chal)) {
345                 DEBUG(0,("_net_auth: creds_server_check failed. Rejecting auth "
346                         "request from client %s machine account %s\n",
347                         remote_machine, mach_acct ));
348                 return NT_STATUS_ACCESS_DENIED;
349         }
350
351         fstrcpy(p->dc->mach_acct, mach_acct);
352         fstrcpy(p->dc->remote_machine, remote_machine);
353         p->dc->authenticated = True;
354
355         /* set up the LSA AUTH response */
356         /* Return the server credentials. */
357         init_net_r_auth(r_u, &srv_chal_out, NT_STATUS_OK);
358
359         return r_u->status;
360 }
361
362 /*************************************************************************
363  init_net_r_auth_2:
364  *************************************************************************/
365
366 static void init_net_r_auth_2(NET_R_AUTH_2 *r_a,
367                               DOM_CHAL *resp_cred, NEG_FLAGS *flgs, NTSTATUS status)
368 {
369         memcpy(r_a->srv_chal.data, resp_cred->data, sizeof(resp_cred->data));
370         memcpy(&r_a->srv_flgs, flgs, sizeof(r_a->srv_flgs));
371         r_a->status = status;
372 }
373
374 /*************************************************************************
375  _net_auth_2
376  *************************************************************************/
377
378 NTSTATUS _net_auth_2(pipes_struct *p, NET_Q_AUTH_2 *q_u, NET_R_AUTH_2 *r_u)
379 {
380         NEG_FLAGS srv_flgs;
381         fstring mach_acct;
382         fstring remote_machine;
383         DOM_CHAL srv_chal_out;
384
385         rpcstr_pull(mach_acct, q_u->clnt_id.uni_acct_name.buffer,sizeof(fstring),
386                                 q_u->clnt_id.uni_acct_name.uni_str_len*2,0);
387         rpcstr_pull(remote_machine, q_u->clnt_id.uni_comp_name.buffer,sizeof(fstring),
388                                 q_u->clnt_id.uni_comp_name.uni_str_len*2,0);
389
390         if (!p->dc || !p->dc->challenge_sent) {
391                 DEBUG(0,("_net_auth2: no challenge sent to client %s\n",
392                         remote_machine ));
393                 return NT_STATUS_ACCESS_DENIED;
394         }
395
396         if ( (lp_server_schannel() == True) &&
397              ((q_u->clnt_flgs.neg_flags & NETLOGON_NEG_SCHANNEL) == 0) ) {
398
399                 /* schannel must be used, but client did not offer it. */
400                 DEBUG(0,("_net_auth2: schannel required but client failed "
401                         "to offer it. Client was %s\n",
402                         mach_acct ));
403                 return NT_STATUS_ACCESS_DENIED;
404         }
405
406         if (!get_md4pw((char *)p->dc->mach_pw, mach_acct)) {
407                 DEBUG(0,("_net_auth2: failed to get machine password for "
408                         "account %s\n",
409                         mach_acct ));
410                 return NT_STATUS_ACCESS_DENIED;
411         }
412
413         /* From the client / server challenges and md4 password, generate sess key */
414         creds_server_init(p->dc,
415                         &p->dc->clnt_chal,      /* Stored client chal. */
416                         &p->dc->srv_chal,       /* Stored server chal. */
417                         (const char *)p->dc->mach_pw,
418                         &srv_chal_out); 
419
420         /* Check client credentials are valid. */
421         if (!creds_server_check(p->dc, &q_u->clnt_chal)) {
422                 DEBUG(0,("_net_auth2: creds_server_check failed. Rejecting auth "
423                         "request from client %s machine account %s\n",
424                         remote_machine, mach_acct ));
425                 return NT_STATUS_ACCESS_DENIED;
426         }
427
428         srv_flgs.neg_flags = 0x000001ff;
429
430         if (lp_server_schannel() != False) {
431                 srv_flgs.neg_flags |= NETLOGON_NEG_SCHANNEL;
432         }
433
434         /* set up the LSA AUTH 2 response */
435         init_net_r_auth_2(r_u, &srv_chal_out, &srv_flgs, NT_STATUS_OK);
436
437         fstrcpy(p->dc->mach_acct, mach_acct);
438         fstrcpy(p->dc->remote_machine, remote_machine);
439         fstrcpy(p->dc->domain, lp_workgroup() );
440
441         p->dc->authenticated = True;
442
443         /* Store off the state so we can continue after client disconnect. */
444         become_root();
445         secrets_store_schannel_session_info(p->mem_ctx, p->dc);
446         unbecome_root();
447
448         return r_u->status;
449 }
450
451 /*************************************************************************
452  _net_srv_pwset
453  *************************************************************************/
454
455 NTSTATUS _net_srv_pwset(pipes_struct *p, NET_Q_SRV_PWSET *q_u, NET_R_SRV_PWSET *r_u)
456 {
457         NTSTATUS status = NT_STATUS_ACCESS_DENIED;
458         fstring workstation;
459         SAM_ACCOUNT *sampass=NULL;
460         BOOL ret = False;
461         unsigned char pwd[16];
462         int i;
463         uint32 acct_ctrl;
464         DOM_CRED cred_out;
465         const uchar *old_pw;
466
467         if (!p->dc || !p->dc->authenticated) {
468                 return NT_STATUS_INVALID_HANDLE;
469         }
470
471         /* Step the creds chain forward. */
472         if (!creds_server_step(p->dc, &q_u->clnt_id.cred, &cred_out)) {
473                 DEBUG(0,("_net_srv_pwset: creds_server_step failed. Rejecting auth "
474                         "request from client %s machine account %s\n",
475                         p->dc->remote_machine, p->dc->mach_acct ));
476                 return NT_STATUS_ACCESS_DENIED;
477         }
478
479         DEBUG(5,("_net_srv_pwset: %d\n", __LINE__));
480
481         rpcstr_pull(workstation,q_u->clnt_id.login.uni_comp_name.buffer,
482                     sizeof(workstation),q_u->clnt_id.login.uni_comp_name.uni_str_len*2,0);
483
484         DEBUG(3,("_net_srv_pwset: Server Password Set by Wksta:[%s] on account [%s]\n",
485                         workstation, p->dc->mach_acct));
486         
487         pdb_init_sam(&sampass);
488
489         become_root();
490         ret=pdb_getsampwnam(sampass, p->dc->mach_acct);
491         unbecome_root();
492
493         /* Ensure the account exists and is a machine account. */
494         
495         acct_ctrl = pdb_get_acct_ctrl(sampass);
496
497         if (!(ret 
498               && (acct_ctrl & ACB_WSTRUST ||
499                       acct_ctrl & ACB_SVRTRUST ||
500                       acct_ctrl & ACB_DOMTRUST))) {
501                 pdb_free_sam(&sampass);
502                 return NT_STATUS_NO_SUCH_USER;
503         }
504         
505         if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED) {
506                 pdb_free_sam(&sampass);
507                 return NT_STATUS_ACCOUNT_DISABLED;
508         }
509
510         /* Woah - what does this to to the credential chain ? JRA */
511         cred_hash3( pwd, q_u->pwd, p->dc->sess_key, 0);
512
513         DEBUG(100,("Server password set : new given value was :\n"));
514         for(i = 0; i < sizeof(pwd); i++)
515                 DEBUG(100,("%02X ", pwd[i]));
516         DEBUG(100,("\n"));
517
518         old_pw = pdb_get_nt_passwd(sampass);
519
520         if (old_pw && memcmp(pwd, old_pw, 16) == 0) {
521                 /* Avoid backend modificiations and other fun if the 
522                    client changed the password to the *same thing* */
523
524                 ret = True;
525         } else {
526
527                 /* LM password should be NULL for machines */
528                 if (!pdb_set_lanman_passwd(sampass, NULL, PDB_CHANGED)) {
529                         pdb_free_sam(&sampass);
530                         return NT_STATUS_NO_MEMORY;
531                 }
532                 
533                 if (!pdb_set_nt_passwd(sampass, pwd, PDB_CHANGED)) {
534                         pdb_free_sam(&sampass);
535                         return NT_STATUS_NO_MEMORY;
536                 }
537                 
538                 if (!pdb_set_pass_changed_now(sampass)) {
539                         pdb_free_sam(&sampass);
540                         /* Not quite sure what this one qualifies as, but this will do */
541                         return NT_STATUS_UNSUCCESSFUL; 
542                 }
543                 
544                 become_root();
545                 ret = pdb_update_sam_account (sampass);
546                 unbecome_root();
547         }
548         if (ret) {
549                 status = NT_STATUS_OK;
550         }
551
552         /* set up the LSA Server Password Set response */
553         init_net_r_srv_pwset(r_u, &cred_out, status);
554
555         pdb_free_sam(&sampass);
556         return r_u->status;
557 }
558
559 /*************************************************************************
560  _net_sam_logoff:
561  *************************************************************************/
562
563 NTSTATUS _net_sam_logoff(pipes_struct *p, NET_Q_SAM_LOGOFF *q_u, NET_R_SAM_LOGOFF *r_u)
564 {
565         if (!get_valid_user_struct(p->vuid))
566                 return NT_STATUS_NO_SUCH_USER;
567
568         if (!p->dc || !p->dc->authenticated) {
569                 return NT_STATUS_INVALID_HANDLE;
570         }
571
572         r_u->buffer_creds = 1; /* yes, we have valid server credentials */
573
574         /* checks and updates credentials.  creates reply credentials */
575         if (!creds_server_step(p->dc, &q_u->sam_id.client.cred, &r_u->srv_creds)) {
576                 DEBUG(0,("_net_sam_logoff: creds_server_step failed. Rejecting auth "
577                         "request from client %s machine account %s\n",
578                         p->dc->remote_machine, p->dc->mach_acct ));
579                 return NT_STATUS_ACCESS_DENIED;
580         }
581
582         r_u->status = NT_STATUS_OK;
583         return r_u->status;
584 }
585
586
587 /*************************************************************************
588  _net_sam_logon
589  *************************************************************************/
590
591 NTSTATUS _net_sam_logon(pipes_struct *p, NET_Q_SAM_LOGON *q_u, NET_R_SAM_LOGON *r_u)
592 {
593         NTSTATUS status = NT_STATUS_OK;
594         NET_USER_INFO_3 *usr_info = NULL;
595         NET_ID_INFO_CTR *ctr = q_u->sam_id.ctr;
596         UNISTR2 *uni_samlogon_user = NULL;
597         UNISTR2 *uni_samlogon_domain = NULL;
598         UNISTR2 *uni_samlogon_workstation = NULL;
599         fstring nt_username, nt_domain, nt_workstation;
600         auth_usersupplied_info *user_info = NULL;
601         auth_serversupplied_info *server_info = NULL;
602         SAM_ACCOUNT *sampw;
603         struct auth_context *auth_context = NULL;
604                 
605         usr_info = TALLOC_P(p->mem_ctx, NET_USER_INFO_3);
606         if (!usr_info)
607                 return NT_STATUS_NO_MEMORY;
608
609         ZERO_STRUCTP(usr_info);
610
611         /* store the user information, if there is any. */
612         r_u->user = usr_info;
613         r_u->switch_value = 0; /* indicates no info */
614         r_u->auth_resp = 1; /* authoritative response */
615         r_u->switch_value = 3; /* indicates type of validation user info */
616         r_u->buffer_creds = 1; /* Ensure we always return server creds. */
617  
618         if (!get_valid_user_struct(p->vuid))
619                 return NT_STATUS_NO_SUCH_USER;
620
621         if (!p->dc || !p->dc->authenticated) {
622                 return NT_STATUS_INVALID_HANDLE;
623         }
624
625         if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
626                 /* 'server schannel = yes' should enforce use of
627                    schannel, the client did offer it in auth2, but
628                    obviously did not use it. */
629                 DEBUG(0,("_net_sam_logoff: client %s not using schannel for netlogon\n",
630                         p->dc->remote_machine ));
631                 return NT_STATUS_ACCESS_DENIED;
632         }
633
634         /* checks and updates credentials.  creates reply credentials */
635         if (!creds_server_step(p->dc, &q_u->sam_id.client.cred,  &r_u->srv_creds)) {
636                 DEBUG(0,("_net_sam_logoff: creds_server_step failed. Rejecting auth "
637                         "request from client %s machine account %s\n",
638                         p->dc->remote_machine, p->dc->mach_acct ));
639                 return NT_STATUS_ACCESS_DENIED;
640         }
641
642         /* find the username */
643     
644         switch (q_u->sam_id.logon_level) {
645         case INTERACTIVE_LOGON_TYPE:
646                 uni_samlogon_user = &ctr->auth.id1.uni_user_name;
647                 uni_samlogon_domain = &ctr->auth.id1.uni_domain_name;
648
649                 uni_samlogon_workstation = &ctr->auth.id1.uni_wksta_name;
650             
651                 DEBUG(3,("SAM Logon (Interactive). Domain:[%s].  ", lp_workgroup()));
652                 break;
653         case NET_LOGON_TYPE:
654                 uni_samlogon_user = &ctr->auth.id2.uni_user_name;
655                 uni_samlogon_domain = &ctr->auth.id2.uni_domain_name;
656                 uni_samlogon_workstation = &ctr->auth.id2.uni_wksta_name;
657             
658                 DEBUG(3,("SAM Logon (Network). Domain:[%s].  ", lp_workgroup()));
659                 break;
660         default:
661                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
662                 return NT_STATUS_INVALID_INFO_CLASS;
663         } /* end switch */
664
665         rpcstr_pull(nt_username,uni_samlogon_user->buffer,sizeof(nt_username),uni_samlogon_user->uni_str_len*2,0);
666         rpcstr_pull(nt_domain,uni_samlogon_domain->buffer,sizeof(nt_domain),uni_samlogon_domain->uni_str_len*2,0);
667         rpcstr_pull(nt_workstation,uni_samlogon_workstation->buffer,sizeof(nt_workstation),uni_samlogon_workstation->uni_str_len*2,0);
668
669         DEBUG(3,("User:[%s@%s] Requested Domain:[%s]\n", nt_username, 
670                  nt_workstation, nt_domain));
671         
672         fstrcpy(current_user_info.smb_name, nt_username);
673         sub_set_smb_name(nt_username);
674      
675         DEBUG(5,("Attempting validation level %d for unmapped username %s.\n", q_u->sam_id.ctr->switch_value, nt_username));
676
677         status = NT_STATUS_OK;
678         
679         switch (ctr->switch_value) {
680         case NET_LOGON_TYPE:
681         {
682                 const char *wksname = nt_workstation;
683                 
684                 if (!NT_STATUS_IS_OK(status = make_auth_context_fixed(&auth_context, ctr->auth.id2.lm_chal))) {
685                         return status;
686                 }
687
688                 /* For a network logon, the workstation name comes in with two
689                  * backslashes in the front. Strip them if they are there. */
690
691                 if (*wksname == '\\') wksname++;
692                 if (*wksname == '\\') wksname++;
693
694                 /* Standard challenge/response authenticaion */
695                 if (!make_user_info_netlogon_network(&user_info, 
696                                                      nt_username, nt_domain, 
697                                                      wksname,
698                                                      ctr->auth.id2.param_ctrl,
699                                                      ctr->auth.id2.lm_chal_resp.buffer,
700                                                      ctr->auth.id2.lm_chal_resp.str_str_len,
701                                                      ctr->auth.id2.nt_chal_resp.buffer,
702                                                      ctr->auth.id2.nt_chal_resp.str_str_len)) {
703                         status = NT_STATUS_NO_MEMORY;
704                 }       
705                 break;
706         }
707         case INTERACTIVE_LOGON_TYPE:
708                 /* 'Interactive' autheticaion, supplies the password in its
709                    MD4 form, encrypted with the session key.  We will
710                    convert this to chellange/responce for the auth
711                    subsystem to chew on */
712         {
713                 const uint8 *chal;
714                 
715                 if (!NT_STATUS_IS_OK(status = make_auth_context_subsystem(&auth_context))) {
716                         return status;
717                 }
718                 
719                 chal = auth_context->get_ntlm_challenge(auth_context);
720
721                 if (!make_user_info_netlogon_interactive(&user_info, 
722                                                          nt_username, nt_domain, 
723                                                          nt_workstation, 
724                                                          ctr->auth.id1.param_ctrl,
725                                                          chal,
726                                                          ctr->auth.id1.lm_owf.data, 
727                                                          ctr->auth.id1.nt_owf.data, 
728                                                          p->dc->sess_key)) {
729                         status = NT_STATUS_NO_MEMORY;
730                 }
731                 break;
732         }
733         default:
734                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
735                 return NT_STATUS_INVALID_INFO_CLASS;
736         } /* end switch */
737         
738         if ( NT_STATUS_IS_OK(status) ) {
739                 status = auth_context->check_ntlm_password(auth_context, 
740                         user_info, &server_info);
741         }
742
743         (auth_context->free)(&auth_context);    
744         free_user_info(&user_info);
745         
746         DEBUG(5, ("_net_sam_logon: check_password returned status %s\n", 
747                   nt_errstr(status)));
748
749         /* Check account and password */
750     
751         if (!NT_STATUS_IS_OK(status)) {
752                 /* If we don't know what this domain is, we need to 
753                    indicate that we are not authoritative.  This 
754                    allows the client to decide if it needs to try 
755                    a local user.  Fix by jpjanosi@us.ibm.com, #2976 */
756                 if ( NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER) 
757                      && !strequal(nt_domain, get_global_sam_name())
758                      && !is_trusted_domain(nt_domain) )
759                         r_u->auth_resp = 0; /* We are not authoritative */
760
761                 free_server_info(&server_info);
762                 return status;
763         }
764
765         if (server_info->guest) {
766                 /* We don't like guest domain logons... */
767                 DEBUG(5,("_net_sam_logon: Attempted domain logon as GUEST denied.\n"));
768                 free_server_info(&server_info);
769                 return NT_STATUS_LOGON_FAILURE;
770         }
771
772         /* This is the point at which, if the login was successful, that
773            the SAM Local Security Authority should record that the user is
774            logged in to the domain.  */
775     
776         {
777                 DOM_GID *gids = NULL;
778                 const DOM_SID *user_sid = NULL;
779                 const DOM_SID *group_sid = NULL;
780                 DOM_SID domain_sid;
781                 uint32 user_rid, group_rid; 
782
783                 int num_gids = 0;
784                 pstring my_name;
785                 fstring user_sid_string;
786                 fstring group_sid_string;
787                 uchar user_session_key[16];
788                 uchar lm_session_key[16];
789                 uchar netlogon_sess_key[16];
790
791                 sampw = server_info->sam_account;
792
793                 /* set up pointer indicating user/password failed to be found */
794                 usr_info->ptr_user_info = 0;
795
796                 user_sid = pdb_get_user_sid(sampw);
797                 group_sid = pdb_get_group_sid(sampw);
798
799                 sid_copy(&domain_sid, user_sid);
800                 sid_split_rid(&domain_sid, &user_rid);
801
802                 if (!sid_peek_check_rid(&domain_sid, group_sid, &group_rid)) {
803                         DEBUG(1, ("_net_sam_logon: user %s\\%s has user sid %s\n but group sid %s.\nThe conflicting domain portions are not supported for NETLOGON calls\n",        
804                                   pdb_get_domain(sampw), pdb_get_username(sampw),
805                                   sid_to_string(user_sid_string, user_sid),
806                                   sid_to_string(group_sid_string, group_sid)));
807                         return NT_STATUS_UNSUCCESSFUL;
808                 }
809                 
810                 
811                 if(server_info->login_server) {
812                         pstrcpy(my_name, server_info->login_server);
813                 } else {
814                         pstrcpy(my_name, global_myname());
815                 }
816                 
817                 if (!NT_STATUS_IS_OK(status 
818                                      = nt_token_to_group_list(p->mem_ctx, 
819                                                               &domain_sid, 
820                                                               server_info->ptok, 
821                                                               &num_gids, 
822                                                               &gids))) {
823                         return status;
824                 }
825
826                 ZERO_STRUCT(netlogon_sess_key);
827                 memcpy(netlogon_sess_key, p->dc->sess_key, 8);
828                 if (server_info->user_session_key.length) {
829                         memcpy(user_session_key, server_info->user_session_key.data, 
830                                MIN(sizeof(user_session_key), server_info->user_session_key.length));
831                         SamOEMhash(user_session_key, netlogon_sess_key, 16);
832                 }
833                 if (server_info->lm_session_key.length) {
834                         memcpy(lm_session_key, server_info->lm_session_key.data, 
835                                MIN(sizeof(lm_session_key), server_info->lm_session_key.length));
836                         SamOEMhash(lm_session_key, netlogon_sess_key, 16);
837                 }
838                 ZERO_STRUCT(netlogon_sess_key);
839                 
840                 init_net_user_info3(p->mem_ctx, usr_info, 
841                                     user_rid,
842                                     group_rid,   
843                                     pdb_get_username(sampw),
844                                     pdb_get_fullname(sampw),
845                                     pdb_get_homedir(sampw),
846                                     pdb_get_dir_drive(sampw),
847                                     pdb_get_logon_script(sampw),
848                                     pdb_get_profile_path(sampw),
849                                     pdb_get_logon_time(sampw),
850                                     get_time_t_max(),
851                                     get_time_t_max(),
852                                     pdb_get_pass_last_set_time(sampw),
853                                     pdb_get_pass_can_change_time(sampw),
854                                     pdb_get_pass_must_change_time(sampw),
855                                     
856                                     0, /* logon_count */
857                                     0, /* bad_pw_count */
858                                     num_gids,    /* uint32 num_groups */
859                                     gids    , /* DOM_GID *gids */
860                                     0x20    , /* uint32 user_flgs (?) */
861                                     server_info->user_session_key.length ? user_session_key : NULL,
862                                     server_info->lm_session_key.length ? lm_session_key : NULL,
863                                     my_name     , /* char *logon_srv */
864                                     pdb_get_domain(sampw),
865                                     &domain_sid,     /* DOM_SID *dom_sid */  
866                                     /* Should be users domain sid, not servers - for trusted domains */
867                                   
868                                     NULL); /* char *other_sids */
869                 ZERO_STRUCT(user_session_key);
870                 ZERO_STRUCT(lm_session_key);
871         }
872         free_server_info(&server_info);
873         return status;
874 }
875
876 /*************************************************************************
877  _ds_enum_dom_trusts
878  *************************************************************************/
879 #if 0   /* JERRY -- not correct */
880 NTSTATUS _ds_enum_dom_trusts(pipes_struct *p, DS_Q_ENUM_DOM_TRUSTS *q_u,
881                              DS_R_ENUM_DOM_TRUSTS *r_u)
882 {
883         NTSTATUS status = NT_STATUS_OK;
884
885         /* TODO: According to MSDN, the can only be executed against a 
886            DC or domain member running Windows 2000 or later.  Need
887            to test against a standalone 2k server and see what it 
888            does.  A windows 2000 DC includes its own domain in the 
889            list.  --jerry */
890
891         return status;
892 }
893 #endif  /* JERRY */