Replace sid_string_static by sid_string_dbg in DEBUGs
[ira/wip.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 3 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, see <http://www.gnu.org/licenses/>.
22  */
23
24 /* This is the implementation of the netlogon pipe. */
25
26 #include "includes.h"
27
28 extern userdom_struct current_user_info;
29
30 #undef DBGC_CLASS
31 #define DBGC_CLASS DBGC_RPC_SRV
32
33 /*************************************************************************
34  init_net_r_req_chal:
35  *************************************************************************/
36
37 static void init_net_r_req_chal(NET_R_REQ_CHAL *r_c,
38                                 DOM_CHAL *srv_chal, NTSTATUS status)
39 {
40         DEBUG(6,("init_net_r_req_chal: %d\n", __LINE__));
41         memcpy(r_c->srv_chal.data, srv_chal->data, sizeof(srv_chal->data));
42         r_c->status = status;
43 }
44
45 /*************************************************************************
46  error messages cropping up when using nltest.exe...
47  *************************************************************************/
48
49 #define ERROR_NO_SUCH_DOMAIN   0x54b
50 #define ERROR_NO_LOGON_SERVERS 0x51f
51 #define NO_ERROR               0x0
52
53 /*************************************************************************
54  net_reply_logon_ctrl:
55  *************************************************************************/
56
57 NTSTATUS _net_logon_ctrl(pipes_struct *p, NET_Q_LOGON_CTRL *q_u, 
58                        NET_R_LOGON_CTRL *r_u)
59 {
60         uint32 flags = 0x0;
61         uint32 pdc_connection_status = 0x00; /* Maybe a win32 error code? */
62         
63         /* Setup the Logon Control response */
64
65         init_net_r_logon_ctrl(r_u, q_u->query_level, flags, 
66                               pdc_connection_status);
67
68         return r_u->status;
69 }
70
71 /****************************************************************************
72 Send a message to smbd to do a sam synchronisation
73 **************************************************************************/
74
75 static void send_sync_message(void)
76 {
77         DEBUG(3, ("sending sam synchronisation message\n"));
78         message_send_all(smbd_messaging_context(), MSG_SMB_SAM_SYNC, NULL, 0,
79                          NULL);
80 }
81
82 /*************************************************************************
83  net_reply_logon_ctrl2:
84  *************************************************************************/
85
86 NTSTATUS _net_logon_ctrl2(pipes_struct *p, NET_Q_LOGON_CTRL2 *q_u, NET_R_LOGON_CTRL2 *r_u)
87 {
88         uint32 flags = 0x0;
89         uint32 pdc_connection_status = 0x0;
90         uint32 logon_attempts = 0x0;
91         uint32 tc_status;
92         fstring servername, domain, dc_name, dc_name2;
93         struct sockaddr_storage dc_ss;
94
95         /* this should be \\global_myname() */
96         unistr2_to_ascii(servername, &q_u->uni_server_name, sizeof(servername));
97
98         r_u->status = NT_STATUS_OK;
99         
100         tc_status = ERROR_NO_SUCH_DOMAIN;
101         fstrcpy( dc_name, "" );
102         
103         switch ( q_u->function_code ) {
104                 case NETLOGON_CONTROL_TC_QUERY:
105                         unistr2_to_ascii(domain, &q_u->info.info6.domain, sizeof(domain));
106                                 
107                         if ( !is_trusted_domain( domain ) )
108                                 break;
109                                 
110                         if ( !get_dc_name( domain, NULL, dc_name2, &dc_ss ) ) {
111                                 tc_status = ERROR_NO_LOGON_SERVERS;
112                                 break;
113                         }
114
115                         fstr_sprintf( dc_name, "\\\\%s", dc_name2 );
116                                 
117                         tc_status = NO_ERROR;
118                         
119                         break;
120                         
121                 case NETLOGON_CONTROL_REDISCOVER:
122                         unistr2_to_ascii(domain, &q_u->info.info6.domain, sizeof(domain));
123                                 
124                         if ( !is_trusted_domain( domain ) )
125                                 break;
126                                 
127                         if ( !get_dc_name( domain, NULL, dc_name2, &dc_ss ) ) {
128                                 tc_status = ERROR_NO_LOGON_SERVERS;
129                                 break;
130                         }
131
132                         fstr_sprintf( dc_name, "\\\\%s", dc_name2 );
133                                 
134                         tc_status = NO_ERROR;
135                         
136                         break;
137                         
138                 default:
139                         /* no idea what this should be */
140                         DEBUG(0,("_net_logon_ctrl2: unimplemented function level [%d]\n",
141                                 q_u->function_code));
142         }
143         
144         /* prepare the response */
145         
146         init_net_r_logon_ctrl2( r_u, q_u->query_level, flags, 
147                 pdc_connection_status, logon_attempts, tc_status, dc_name );
148
149         if (lp_server_role() == ROLE_DOMAIN_BDC)
150                 send_sync_message();
151
152         return r_u->status;
153 }
154
155 /*************************************************************************
156  net_reply_trust_dom_list:
157  *************************************************************************/
158
159 NTSTATUS _net_trust_dom_list(pipes_struct *p, NET_Q_TRUST_DOM_LIST *q_u, NET_R_TRUST_DOM_LIST *r_u)
160 {
161         const char *trusted_domain = "test_domain";
162         uint32 num_trust_domains = 1;
163
164         DEBUG(6,("_net_trust_dom_list: %d\n", __LINE__));
165
166         /* set up the Trusted Domain List response */
167         init_r_trust_dom(r_u, num_trust_domains, trusted_domain);
168
169         DEBUG(6,("_net_trust_dom_list: %d\n", __LINE__));
170
171         return r_u->status;
172 }
173
174 /***********************************************************************************
175  init_net_r_srv_pwset:
176  ***********************************************************************************/
177
178 static void init_net_r_srv_pwset(NET_R_SRV_PWSET *r_s,
179                                  DOM_CRED *srv_cred, NTSTATUS status)  
180 {
181         DEBUG(5,("init_net_r_srv_pwset: %d\n", __LINE__));
182
183         memcpy(&r_s->srv_cred, srv_cred, sizeof(r_s->srv_cred));
184         r_s->status = status;
185
186         DEBUG(5,("init_net_r_srv_pwset: %d\n", __LINE__));
187 }
188
189 /******************************************************************
190  gets a machine password entry.  checks access rights of the host.
191  ******************************************************************/
192
193 static NTSTATUS get_md4pw(char *md4pw, char *mach_acct, uint16 sec_chan_type)
194 {
195         struct samu *sampass = NULL;
196         const uint8 *pass;
197         bool ret;
198         uint32 acct_ctrl;
199         
200 #if 0
201         char addr[INET6_ADDRSTRLEN];
202
203     /*
204      * Currently this code is redundent as we already have a filter
205      * by hostname list. What this code really needs to do is to 
206      * get a hosts allowed/hosts denied list from the SAM database
207      * on a per user basis, and make the access decision there.
208      * I will leave this code here for now as a reminder to implement
209      * this at a later date. JRA.
210      */
211
212         if (!allow_access(lp_domain_hostsdeny(), lp_domain_hostsallow(),
213                         client_name(get_client_fd()),
214                         client_addr(get_client_fd(),addr,sizeof(addr)))) {
215                 DEBUG(0,("get_md4pw: Workstation %s denied access to domain\n", mach_acct));
216                 return False;
217         }
218 #endif /* 0 */
219
220         if ( !(sampass = samu_new( NULL )) ) {
221                 return NT_STATUS_NO_MEMORY;
222         }
223
224         /* JRA. This is ok as it is only used for generating the challenge. */
225         become_root();
226         ret = pdb_getsampwnam(sampass, mach_acct);
227         unbecome_root();
228  
229         if (!ret) {
230                 DEBUG(0,("get_md4pw: Workstation %s: no account in domain\n", mach_acct));
231                 TALLOC_FREE(sampass);
232                 return NT_STATUS_ACCESS_DENIED;
233         }
234
235         acct_ctrl = pdb_get_acct_ctrl(sampass);
236         if (acct_ctrl & ACB_DISABLED) {
237                 DEBUG(0,("get_md4pw: Workstation %s: account is disabled\n", mach_acct));
238                 TALLOC_FREE(sampass);
239                 return NT_STATUS_ACCOUNT_DISABLED;
240         }
241
242         if (!(acct_ctrl & ACB_SVRTRUST) &&
243             !(acct_ctrl & ACB_WSTRUST) &&
244             !(acct_ctrl & ACB_DOMTRUST)) 
245         {
246                 DEBUG(0,("get_md4pw: Workstation %s: account is not a trust account\n", mach_acct));
247                 TALLOC_FREE(sampass);
248                 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
249         }
250
251         switch (sec_chan_type) {
252                 case SEC_CHAN_BDC:
253                         if (!(acct_ctrl & ACB_SVRTRUST)) {
254                                 DEBUG(0,("get_md4pw: Workstation %s: BDC secure channel requested "
255                                          "but not a server trust account\n", mach_acct));
256                                 TALLOC_FREE(sampass);
257                                 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
258                         }
259                         break;
260                 case SEC_CHAN_WKSTA:
261                         if (!(acct_ctrl & ACB_WSTRUST)) {
262                                 DEBUG(0,("get_md4pw: Workstation %s: WORKSTATION secure channel requested "
263                                          "but not a workstation trust account\n", mach_acct));
264                                 TALLOC_FREE(sampass);
265                                 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
266                         }
267                         break;
268                 case SEC_CHAN_DOMAIN:
269                         if (!(acct_ctrl & ACB_DOMTRUST)) {
270                                 DEBUG(0,("get_md4pw: Workstation %s: DOMAIN secure channel requested "
271                                          "but not a interdomain trust account\n", mach_acct));
272                                 TALLOC_FREE(sampass);
273                                 return NT_STATUS_NO_TRUST_SAM_ACCOUNT;
274                         }
275                         break;
276                 default:
277                         break;
278         }
279
280         if ((pass = pdb_get_nt_passwd(sampass)) == NULL) {
281                 DEBUG(0,("get_md4pw: Workstation %s: account does not have a password\n", mach_acct));
282                 TALLOC_FREE(sampass);
283                 return NT_STATUS_LOGON_FAILURE;
284         }
285
286         memcpy(md4pw, pass, 16);
287         dump_data(5, (uint8 *)md4pw, 16);
288
289         TALLOC_FREE(sampass);
290         
291         return NT_STATUS_OK;
292         
293
294 }
295
296 /*************************************************************************
297  _net_req_chal
298  *************************************************************************/
299
300 NTSTATUS _net_req_chal(pipes_struct *p, NET_Q_REQ_CHAL *q_u, NET_R_REQ_CHAL *r_u)
301 {
302         if (!p->dc) {
303                 p->dc = TALLOC_ZERO_P(p->pipe_state_mem_ctx, struct dcinfo);
304                 if (!p->dc) {
305                         return NT_STATUS_NO_MEMORY;
306                 }
307         } else {
308                 DEBUG(10,("_net_req_chal: new challenge requested. Clearing old state.\n"));
309                 ZERO_STRUCTP(p->dc);
310         }
311
312         rpcstr_pull(p->dc->remote_machine,
313                         q_u->uni_logon_clnt.buffer,
314                         sizeof(fstring),q_u->uni_logon_clnt.uni_str_len*2,0);
315
316         /* Save the client challenge to the server. */
317         memcpy(p->dc->clnt_chal.data, q_u->clnt_chal.data, sizeof(q_u->clnt_chal.data));
318
319         /* Create a server challenge for the client */
320         /* Set this to a random value. */
321         generate_random_buffer(p->dc->srv_chal.data, 8);
322         
323         /* set up the LSA REQUEST CHALLENGE response */
324         init_net_r_req_chal(r_u, &p->dc->srv_chal, NT_STATUS_OK);
325         
326         p->dc->challenge_sent = True;
327
328         return NT_STATUS_OK;
329 }
330
331 /*************************************************************************
332  init_net_r_auth:
333  *************************************************************************/
334
335 static void init_net_r_auth(NET_R_AUTH *r_a, DOM_CHAL *resp_cred, NTSTATUS status)
336 {
337         memcpy(r_a->srv_chal.data, resp_cred->data, sizeof(resp_cred->data));
338         r_a->status = status;
339 }
340
341 /*************************************************************************
342  _net_auth. Create the initial credentials.
343  *************************************************************************/
344
345 NTSTATUS _net_auth(pipes_struct *p, NET_Q_AUTH *q_u, NET_R_AUTH *r_u)
346 {
347         NTSTATUS status;
348         fstring mach_acct;
349         fstring remote_machine;
350         DOM_CHAL srv_chal_out;
351
352         if (!p->dc || !p->dc->challenge_sent) {
353                 return NT_STATUS_ACCESS_DENIED;
354         }
355
356         rpcstr_pull(mach_acct, q_u->clnt_id.uni_acct_name.buffer,sizeof(fstring),
357                                 q_u->clnt_id.uni_acct_name.uni_str_len*2,0);
358         rpcstr_pull(remote_machine, q_u->clnt_id.uni_comp_name.buffer,sizeof(fstring),
359                                 q_u->clnt_id.uni_comp_name.uni_str_len*2,0);
360
361         status = get_md4pw((char *)p->dc->mach_pw, mach_acct, q_u->clnt_id.sec_chan);
362         if (!NT_STATUS_IS_OK(status)) {
363                 DEBUG(0,("_net_auth: creds_server_check failed. Failed to "
364                         "get password for machine account %s "
365                         "from client %s: %s\n",
366                         mach_acct, remote_machine, nt_errstr(status) ));
367                 /* always return NT_STATUS_ACCESS_DENIED */
368                 return NT_STATUS_ACCESS_DENIED;
369         }
370
371         /* From the client / server challenges and md4 password, generate sess key */
372         creds_server_init(0,                    /* No neg flags. */
373                         p->dc,
374                         &p->dc->clnt_chal,      /* Stored client chal. */
375                         &p->dc->srv_chal,       /* Stored server chal. */
376                         p->dc->mach_pw,
377                         &srv_chal_out); 
378
379         /* Check client credentials are valid. */
380         if (!creds_server_check(p->dc, &q_u->clnt_chal)) {
381                 DEBUG(0,("_net_auth: creds_server_check failed. Rejecting auth "
382                         "request from client %s machine account %s\n",
383                         remote_machine, mach_acct ));
384                 return NT_STATUS_ACCESS_DENIED;
385         }
386
387         fstrcpy(p->dc->mach_acct, mach_acct);
388         fstrcpy(p->dc->remote_machine, remote_machine);
389         p->dc->authenticated = True;
390
391         /* set up the LSA AUTH response */
392         /* Return the server credentials. */
393         init_net_r_auth(r_u, &srv_chal_out, NT_STATUS_OK);
394
395         return r_u->status;
396 }
397
398 /*************************************************************************
399  init_net_r_auth_2:
400  *************************************************************************/
401
402 static void init_net_r_auth_2(NET_R_AUTH_2 *r_a,
403                               DOM_CHAL *resp_cred, NEG_FLAGS *flgs, NTSTATUS status)
404 {
405         memcpy(r_a->srv_chal.data, resp_cred->data, sizeof(resp_cred->data));
406         memcpy(&r_a->srv_flgs, flgs, sizeof(r_a->srv_flgs));
407         r_a->status = status;
408 }
409
410 /*************************************************************************
411  _net_auth_2
412  *************************************************************************/
413
414 NTSTATUS _net_auth_2(pipes_struct *p, NET_Q_AUTH_2 *q_u, NET_R_AUTH_2 *r_u)
415 {
416         NTSTATUS status;
417         NEG_FLAGS srv_flgs;
418         fstring mach_acct;
419         fstring remote_machine;
420         DOM_CHAL srv_chal_out;
421
422         rpcstr_pull(mach_acct, q_u->clnt_id.uni_acct_name.buffer,sizeof(fstring),
423                                 q_u->clnt_id.uni_acct_name.uni_str_len*2,0);
424
425         /* We use this as the key to store the creds. */
426         rpcstr_pull(remote_machine, q_u->clnt_id.uni_comp_name.buffer,sizeof(fstring),
427                                 q_u->clnt_id.uni_comp_name.uni_str_len*2,0);
428
429         if (!p->dc || !p->dc->challenge_sent) {
430                 DEBUG(0,("_net_auth2: no challenge sent to client %s\n",
431                         remote_machine ));
432                 return NT_STATUS_ACCESS_DENIED;
433         }
434
435         if ( (lp_server_schannel() == True) &&
436              ((q_u->clnt_flgs.neg_flags & NETLOGON_NEG_SCHANNEL) == 0) ) {
437
438                 /* schannel must be used, but client did not offer it. */
439                 DEBUG(0,("_net_auth2: schannel required but client failed "
440                         "to offer it. Client was %s\n",
441                         mach_acct ));
442                 return NT_STATUS_ACCESS_DENIED;
443         }
444
445         status = get_md4pw((char *)p->dc->mach_pw, mach_acct, q_u->clnt_id.sec_chan);
446         if (!NT_STATUS_IS_OK(status)) {
447                 DEBUG(0,("_net_auth2: failed to get machine password for "
448                         "account %s: %s\n",
449                         mach_acct, nt_errstr(status) ));
450                 /* always return NT_STATUS_ACCESS_DENIED */
451                 return NT_STATUS_ACCESS_DENIED;
452         }
453
454         /* From the client / server challenges and md4 password, generate sess key */
455         creds_server_init(q_u->clnt_flgs.neg_flags,
456                         p->dc,
457                         &p->dc->clnt_chal,      /* Stored client chal. */
458                         &p->dc->srv_chal,       /* Stored server chal. */
459                         p->dc->mach_pw,
460                         &srv_chal_out); 
461
462         /* Check client credentials are valid. */
463         if (!creds_server_check(p->dc, &q_u->clnt_chal)) {
464                 DEBUG(0,("_net_auth2: creds_server_check failed. Rejecting auth "
465                         "request from client %s machine account %s\n",
466                         remote_machine, mach_acct ));
467                 return NT_STATUS_ACCESS_DENIED;
468         }
469
470         srv_flgs.neg_flags = 0x000001ff;
471
472         if (lp_server_schannel() != False) {
473                 srv_flgs.neg_flags |= NETLOGON_NEG_SCHANNEL;
474         }
475
476         /* set up the LSA AUTH 2 response */
477         init_net_r_auth_2(r_u, &srv_chal_out, &srv_flgs, NT_STATUS_OK);
478
479         fstrcpy(p->dc->mach_acct, mach_acct);
480         fstrcpy(p->dc->remote_machine, remote_machine);
481         fstrcpy(p->dc->domain, lp_workgroup() );
482
483         p->dc->authenticated = True;
484
485         /* Store off the state so we can continue after client disconnect. */
486         become_root();
487         secrets_store_schannel_session_info(p->mem_ctx,
488                                         remote_machine,
489                                         p->dc);
490         unbecome_root();
491
492         return r_u->status;
493 }
494
495 /*************************************************************************
496  _net_srv_pwset
497  *************************************************************************/
498
499 NTSTATUS _net_srv_pwset(pipes_struct *p, NET_Q_SRV_PWSET *q_u, NET_R_SRV_PWSET *r_u)
500 {
501         fstring remote_machine;
502         struct samu *sampass=NULL;
503         bool ret = False;
504         unsigned char pwd[16];
505         int i;
506         uint32 acct_ctrl;
507         DOM_CRED cred_out;
508         const uchar *old_pw;
509
510         DEBUG(5,("_net_srv_pwset: %d\n", __LINE__));
511
512         /* We need the remote machine name for the creds lookup. */
513         rpcstr_pull(remote_machine,q_u->clnt_id.login.uni_comp_name.buffer,
514                     sizeof(remote_machine),q_u->clnt_id.login.uni_comp_name.uni_str_len*2,0);
515
516         if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
517                 /* 'server schannel = yes' should enforce use of
518                    schannel, the client did offer it in auth2, but
519                    obviously did not use it. */
520                 DEBUG(0,("_net_srv_pwset: client %s not using schannel for netlogon\n",
521                         remote_machine ));
522                 return NT_STATUS_ACCESS_DENIED;
523         }
524
525         if (!p->dc) {
526                 /* Restore the saved state of the netlogon creds. */
527                 become_root();
528                 ret = secrets_restore_schannel_session_info(p->pipe_state_mem_ctx,
529                                                         remote_machine,
530                                                         &p->dc);
531                 unbecome_root();
532                 if (!ret) {
533                         return NT_STATUS_INVALID_HANDLE;
534                 }
535         }
536
537         if (!p->dc || !p->dc->authenticated) {
538                 return NT_STATUS_INVALID_HANDLE;
539         }
540
541         DEBUG(3,("_net_srv_pwset: Server Password Set by remote machine:[%s] on account [%s]\n",
542                         remote_machine, p->dc->mach_acct));
543         
544         /* Step the creds chain forward. */
545         if (!creds_server_step(p->dc, &q_u->clnt_id.cred, &cred_out)) {
546                 DEBUG(2,("_net_srv_pwset: creds_server_step failed. Rejecting auth "
547                         "request from client %s machine account %s\n",
548                         remote_machine, p->dc->mach_acct ));
549                 return NT_STATUS_INVALID_PARAMETER;
550         }
551
552         /* We must store the creds state after an update. */
553         sampass = samu_new( NULL );
554         if (!sampass) {
555                 return NT_STATUS_NO_MEMORY;
556         }
557
558         become_root();
559         secrets_store_schannel_session_info(p->pipe_state_mem_ctx,
560                                                 remote_machine,
561                                                 p->dc);
562         ret = pdb_getsampwnam(sampass, p->dc->mach_acct);
563         unbecome_root();
564
565         if (!ret) {
566                 TALLOC_FREE(sampass);
567                 return NT_STATUS_ACCESS_DENIED;
568         }
569
570         /* Ensure the account exists and is a machine account. */
571         
572         acct_ctrl = pdb_get_acct_ctrl(sampass);
573
574         if (!(acct_ctrl & ACB_WSTRUST ||
575                       acct_ctrl & ACB_SVRTRUST ||
576                       acct_ctrl & ACB_DOMTRUST)) {
577                 TALLOC_FREE(sampass);
578                 return NT_STATUS_NO_SUCH_USER;
579         }
580         
581         if (pdb_get_acct_ctrl(sampass) & ACB_DISABLED) {
582                 TALLOC_FREE(sampass);
583                 return NT_STATUS_ACCOUNT_DISABLED;
584         }
585
586         /* Woah - what does this to to the credential chain ? JRA */
587         cred_hash3( pwd, q_u->pwd, p->dc->sess_key, 0);
588
589         DEBUG(100,("Server password set : new given value was :\n"));
590         for(i = 0; i < sizeof(pwd); i++)
591                 DEBUG(100,("%02X ", pwd[i]));
592         DEBUG(100,("\n"));
593
594         old_pw = pdb_get_nt_passwd(sampass);
595
596         if (old_pw && memcmp(pwd, old_pw, 16) == 0) {
597                 /* Avoid backend modificiations and other fun if the 
598                    client changed the password to the *same thing* */
599
600                 ret = True;
601         } else {
602
603                 /* LM password should be NULL for machines */
604                 if (!pdb_set_lanman_passwd(sampass, NULL, PDB_CHANGED)) {
605                         TALLOC_FREE(sampass);
606                         return NT_STATUS_NO_MEMORY;
607                 }
608                 
609                 if (!pdb_set_nt_passwd(sampass, pwd, PDB_CHANGED)) {
610                         TALLOC_FREE(sampass);
611                         return NT_STATUS_NO_MEMORY;
612                 }
613                 
614                 if (!pdb_set_pass_last_set_time(sampass, time(NULL), PDB_CHANGED)) {
615                         TALLOC_FREE(sampass);
616                         /* Not quite sure what this one qualifies as, but this will do */
617                         return NT_STATUS_UNSUCCESSFUL; 
618                 }
619                 
620                 become_root();
621                 r_u->status = pdb_update_sam_account(sampass);
622                 unbecome_root();
623         }
624
625         /* set up the LSA Server Password Set response */
626         init_net_r_srv_pwset(r_u, &cred_out, r_u->status);
627
628         TALLOC_FREE(sampass);
629         return r_u->status;
630 }
631
632 /*************************************************************************
633  _net_sam_logoff:
634  *************************************************************************/
635
636 NTSTATUS _net_sam_logoff(pipes_struct *p, NET_Q_SAM_LOGOFF *q_u, NET_R_SAM_LOGOFF *r_u)
637 {
638         fstring remote_machine;
639
640         if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
641                 /* 'server schannel = yes' should enforce use of
642                    schannel, the client did offer it in auth2, but
643                    obviously did not use it. */
644                 DEBUG(0,("_net_sam_logoff: client %s not using schannel for netlogon\n",
645                         get_remote_machine_name() ));
646                 return NT_STATUS_ACCESS_DENIED;
647         }
648
649
650         if (!get_valid_user_struct(p->vuid))
651                 return NT_STATUS_NO_SUCH_USER;
652
653         /* Get the remote machine name for the creds store. */
654         rpcstr_pull(remote_machine,q_u->sam_id.client.login.uni_comp_name.buffer,
655                     sizeof(remote_machine),q_u->sam_id.client.login.uni_comp_name.uni_str_len*2,0);
656
657         if (!p->dc) {
658                 /* Restore the saved state of the netlogon creds. */
659                 bool ret;
660
661                 become_root();
662                 ret = secrets_restore_schannel_session_info(p->pipe_state_mem_ctx,
663                                                 remote_machine,
664                                                 &p->dc);
665                 unbecome_root();
666                 if (!ret) {
667                         return NT_STATUS_INVALID_HANDLE;
668                 }
669         }
670
671         if (!p->dc || !p->dc->authenticated) {
672                 return NT_STATUS_INVALID_HANDLE;
673         }
674
675         r_u->buffer_creds = 1; /* yes, we have valid server credentials */
676
677         /* checks and updates credentials.  creates reply credentials */
678         if (!creds_server_step(p->dc, &q_u->sam_id.client.cred, &r_u->srv_creds)) {
679                 DEBUG(2,("_net_sam_logoff: creds_server_step failed. Rejecting auth "
680                         "request from client %s machine account %s\n",
681                         remote_machine, p->dc->mach_acct ));
682                 return NT_STATUS_INVALID_PARAMETER;
683         }
684
685         /* We must store the creds state after an update. */
686         become_root();
687         secrets_store_schannel_session_info(p->pipe_state_mem_ctx,
688                                         remote_machine,
689                                         p->dc);
690         unbecome_root();
691
692         r_u->status = NT_STATUS_OK;
693         return r_u->status;
694 }
695
696 /*******************************************************************
697  gets a domain user's groups from their already-calculated NT_USER_TOKEN
698  ********************************************************************/
699
700 static NTSTATUS nt_token_to_group_list(TALLOC_CTX *mem_ctx,
701                                        const DOM_SID *domain_sid,
702                                        size_t num_sids,
703                                        const DOM_SID *sids,
704                                        int *numgroups, DOM_GID **pgids) 
705 {
706         int i;
707
708         *numgroups=0;
709         *pgids = NULL;
710
711         for (i=0; i<num_sids; i++) {
712                 DOM_GID gid;
713                 if (!sid_peek_check_rid(domain_sid, &sids[i], &gid.g_rid)) {
714                         continue;
715                 }
716                 gid.attr = (SE_GROUP_MANDATORY|SE_GROUP_ENABLED_BY_DEFAULT|
717                             SE_GROUP_ENABLED);
718                 ADD_TO_ARRAY(mem_ctx, DOM_GID, gid, pgids, numgroups);
719                 if (*pgids == NULL) {
720                         return NT_STATUS_NO_MEMORY;
721                 }
722         }
723         return NT_STATUS_OK;
724 }
725
726 /*************************************************************************
727  _net_sam_logon
728  *************************************************************************/
729
730 static NTSTATUS _net_sam_logon_internal(pipes_struct *p,
731                                         NET_Q_SAM_LOGON *q_u,
732                                         NET_R_SAM_LOGON *r_u,
733                                         bool process_creds)
734 {
735         NTSTATUS status = NT_STATUS_OK;
736         NET_USER_INFO_3 *usr_info = NULL;
737         NET_ID_INFO_CTR *ctr = q_u->sam_id.ctr;
738         UNISTR2 *uni_samlogon_user = NULL;
739         UNISTR2 *uni_samlogon_domain = NULL;
740         UNISTR2 *uni_samlogon_workstation = NULL;
741         fstring nt_username, nt_domain, nt_workstation;
742         auth_usersupplied_info *user_info = NULL;
743         auth_serversupplied_info *server_info = NULL;
744         struct samu *sampw;
745         struct auth_context *auth_context = NULL;
746          
747         if ( (lp_server_schannel() == True) && (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) ) {
748                 /* 'server schannel = yes' should enforce use of
749                    schannel, the client did offer it in auth2, but
750                    obviously did not use it. */
751                 DEBUG(0,("_net_sam_logon_internal: client %s not using schannel for netlogon\n",
752                         get_remote_machine_name() ));
753                 return NT_STATUS_ACCESS_DENIED;
754         }
755
756         usr_info = TALLOC_P(p->mem_ctx, NET_USER_INFO_3);
757         if (!usr_info) {
758                 return NT_STATUS_NO_MEMORY;
759         }
760
761         ZERO_STRUCTP(usr_info);
762
763         /* store the user information, if there is any. */
764         r_u->user = usr_info;
765         r_u->auth_resp = 1; /* authoritative response */
766         if (q_u->validation_level != 2 && q_u->validation_level != 3) {
767                 DEBUG(0,("_net_sam_logon: bad validation_level value %d.\n", (int)q_u->validation_level ));
768                 return NT_STATUS_ACCESS_DENIED;
769         }
770         /* We handle the return of USER_INFO_2 instead of 3 in the parse return. Sucks, I know... */
771         r_u->switch_value = q_u->validation_level; /* indicates type of validation user info */
772         r_u->buffer_creds = 1; /* Ensure we always return server creds. */
773  
774         if (!get_valid_user_struct(p->vuid))
775                 return NT_STATUS_NO_SUCH_USER;
776
777         if (process_creds) {
778                 fstring remote_machine;
779
780                 /* Get the remote machine name for the creds store. */
781                 /* Note this is the remote machine this request is coming from (member server),
782                    not neccessarily the workstation name the user is logging onto.
783                 */
784                 rpcstr_pull(remote_machine,q_u->sam_id.client.login.uni_comp_name.buffer,
785                     sizeof(remote_machine),q_u->sam_id.client.login.uni_comp_name.uni_str_len*2,0);
786
787                 if (!p->dc) {
788                         /* Restore the saved state of the netlogon creds. */
789                         bool ret;
790
791                         become_root();
792                         ret = secrets_restore_schannel_session_info(p->pipe_state_mem_ctx,
793                                         remote_machine,
794                                         &p->dc);
795                         unbecome_root();
796                         if (!ret) {
797                                 return NT_STATUS_INVALID_HANDLE;
798                         }
799                 }
800
801                 if (!p->dc || !p->dc->authenticated) {
802                         return NT_STATUS_INVALID_HANDLE;
803                 }
804
805                 /* checks and updates credentials.  creates reply credentials */
806                 if (!creds_server_step(p->dc, &q_u->sam_id.client.cred,  &r_u->srv_creds)) {
807                         DEBUG(2,("_net_sam_logon: creds_server_step failed. Rejecting auth "
808                                 "request from client %s machine account %s\n",
809                                 remote_machine, p->dc->mach_acct ));
810                         return NT_STATUS_INVALID_PARAMETER;
811                 }
812
813                 /* We must store the creds state after an update. */
814                 become_root();
815                 secrets_store_schannel_session_info(p->pipe_state_mem_ctx,
816                                         remote_machine,
817                                         p->dc);
818                 unbecome_root();
819         }
820
821         switch (q_u->sam_id.logon_level) {
822         case INTERACTIVE_LOGON_TYPE:
823                 uni_samlogon_user = &ctr->auth.id1.uni_user_name;
824                 uni_samlogon_domain = &ctr->auth.id1.uni_domain_name;
825
826                 uni_samlogon_workstation = &ctr->auth.id1.uni_wksta_name;
827             
828                 DEBUG(3,("SAM Logon (Interactive). Domain:[%s].  ", lp_workgroup()));
829                 break;
830         case NET_LOGON_TYPE:
831                 uni_samlogon_user = &ctr->auth.id2.uni_user_name;
832                 uni_samlogon_domain = &ctr->auth.id2.uni_domain_name;
833                 uni_samlogon_workstation = &ctr->auth.id2.uni_wksta_name;
834             
835                 DEBUG(3,("SAM Logon (Network). Domain:[%s].  ", lp_workgroup()));
836                 break;
837         default:
838                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
839                 return NT_STATUS_INVALID_INFO_CLASS;
840         } /* end switch */
841
842         rpcstr_pull(nt_username,uni_samlogon_user->buffer,sizeof(nt_username),uni_samlogon_user->uni_str_len*2,0);
843         rpcstr_pull(nt_domain,uni_samlogon_domain->buffer,sizeof(nt_domain),uni_samlogon_domain->uni_str_len*2,0);
844         rpcstr_pull(nt_workstation,uni_samlogon_workstation->buffer,sizeof(nt_workstation),uni_samlogon_workstation->uni_str_len*2,0);
845
846         DEBUG(3,("User:[%s@%s] Requested Domain:[%s]\n", nt_username, nt_workstation, nt_domain));
847         fstrcpy(current_user_info.smb_name, nt_username);
848         sub_set_smb_name(nt_username);
849      
850         DEBUG(5,("Attempting validation level %d for unmapped username %s.\n", q_u->sam_id.ctr->switch_value, nt_username));
851
852         status = NT_STATUS_OK;
853         
854         switch (ctr->switch_value) {
855         case NET_LOGON_TYPE:
856         {
857                 const char *wksname = nt_workstation;
858                 
859                 if (!NT_STATUS_IS_OK(status = make_auth_context_fixed(&auth_context, ctr->auth.id2.lm_chal))) {
860                         return status;
861                 }
862
863                 /* For a network logon, the workstation name comes in with two
864                  * backslashes in the front. Strip them if they are there. */
865
866                 if (*wksname == '\\') wksname++;
867                 if (*wksname == '\\') wksname++;
868
869                 /* Standard challenge/response authenticaion */
870                 if (!make_user_info_netlogon_network(&user_info, 
871                                                      nt_username, nt_domain, 
872                                                      wksname,
873                                                      ctr->auth.id2.param_ctrl,
874                                                      ctr->auth.id2.lm_chal_resp.buffer,
875                                                      ctr->auth.id2.lm_chal_resp.str_str_len,
876                                                      ctr->auth.id2.nt_chal_resp.buffer,
877                                                      ctr->auth.id2.nt_chal_resp.str_str_len)) {
878                         status = NT_STATUS_NO_MEMORY;
879                 }       
880                 break;
881         }
882         case INTERACTIVE_LOGON_TYPE:
883                 /* 'Interactive' authentication, supplies the password in its
884                    MD4 form, encrypted with the session key.  We will convert
885                    this to challenge/response for the auth subsystem to chew
886                    on */
887         {
888                 const uint8 *chal;
889                 
890                 if (!NT_STATUS_IS_OK(status = make_auth_context_subsystem(&auth_context))) {
891                         return status;
892                 }
893                 
894                 chal = auth_context->get_ntlm_challenge(auth_context);
895
896                 if (!make_user_info_netlogon_interactive(&user_info, 
897                                                          nt_username, nt_domain, 
898                                                          nt_workstation, 
899                                                          ctr->auth.id1.param_ctrl,
900                                                          chal,
901                                                          ctr->auth.id1.lm_owf.data, 
902                                                          ctr->auth.id1.nt_owf.data, 
903                                                          p->dc->sess_key)) {
904                         status = NT_STATUS_NO_MEMORY;
905                 }
906                 break;
907         }
908         default:
909                 DEBUG(2,("SAM Logon: unsupported switch value\n"));
910                 return NT_STATUS_INVALID_INFO_CLASS;
911         } /* end switch */
912         
913         if ( NT_STATUS_IS_OK(status) ) {
914                 status = auth_context->check_ntlm_password(auth_context, 
915                         user_info, &server_info);
916         }
917
918         (auth_context->free)(&auth_context);    
919         free_user_info(&user_info);
920         
921         DEBUG(5, ("_net_sam_logon: check_password returned status %s\n", 
922                   nt_errstr(status)));
923
924         /* Check account and password */
925     
926         if (!NT_STATUS_IS_OK(status)) {
927                 /* If we don't know what this domain is, we need to 
928                    indicate that we are not authoritative.  This 
929                    allows the client to decide if it needs to try 
930                    a local user.  Fix by jpjanosi@us.ibm.com, #2976 */
931                 if ( NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER) 
932                      && !strequal(nt_domain, get_global_sam_name())
933                      && !is_trusted_domain(nt_domain) )
934                         r_u->auth_resp = 0; /* We are not authoritative */
935
936                 TALLOC_FREE(server_info);
937                 return status;
938         }
939
940         if (server_info->guest) {
941                 /* We don't like guest domain logons... */
942                 DEBUG(5,("_net_sam_logon: Attempted domain logon as GUEST "
943                          "denied.\n"));
944                 TALLOC_FREE(server_info);
945                 return NT_STATUS_LOGON_FAILURE;
946         }
947
948         /* This is the point at which, if the login was successful, that
949            the SAM Local Security Authority should record that the user is
950            logged in to the domain.  */
951
952         {
953                 DOM_GID *gids = NULL;
954                 const DOM_SID *user_sid = NULL;
955                 const DOM_SID *group_sid = NULL;
956                 DOM_SID domain_sid;
957                 uint32 user_rid, group_rid;
958
959                 int num_gids = 0;
960                 const char *my_name;
961                 unsigned char user_session_key[16];
962                 unsigned char lm_session_key[16];
963                 unsigned char pipe_session_key[16];
964
965                 sampw = server_info->sam_account;
966
967                 /* set up pointer indicating user/password failed to be
968                  * found */
969                 usr_info->ptr_user_info = 0;
970
971                 user_sid = pdb_get_user_sid(sampw);
972                 group_sid = pdb_get_group_sid(sampw);
973
974                 if ((user_sid == NULL) || (group_sid == NULL)) {
975                         DEBUG(1, ("_net_sam_logon: User without group or user SID\n"));
976                         return NT_STATUS_UNSUCCESSFUL;
977                 }
978
979                 sid_copy(&domain_sid, user_sid);
980                 sid_split_rid(&domain_sid, &user_rid);
981
982                 if (!sid_peek_check_rid(&domain_sid, group_sid, &group_rid)) {
983                         DEBUG(1, ("_net_sam_logon: user %s\\%s has user sid "
984                                   "%s\n but group sid %s.\n"
985                                   "The conflicting domain portions are not "
986                                   "supported for NETLOGON calls\n",
987                                   pdb_get_domain(sampw),
988                                   pdb_get_username(sampw),
989                                   sid_string_dbg(user_sid),
990                                   sid_string_dbg(group_sid)));
991                         return NT_STATUS_UNSUCCESSFUL;
992                 }
993
994                 if(server_info->login_server) {
995                         my_name = server_info->login_server;
996                 } else {
997                         my_name = global_myname();
998                 }
999
1000                 status = nt_token_to_group_list(p->mem_ctx, &domain_sid,
1001                                                 server_info->num_sids,
1002                                                 server_info->sids,
1003                                                 &num_gids, &gids);
1004
1005                 if (!NT_STATUS_IS_OK(status)) {
1006                         return status;
1007                 }
1008
1009                 if (server_info->user_session_key.length) {
1010                         memcpy(user_session_key,
1011                                server_info->user_session_key.data,
1012                                MIN(sizeof(user_session_key),
1013                                    server_info->user_session_key.length));
1014                         if (process_creds) {
1015                                 /* Get the pipe session key from the creds. */
1016                                 memcpy(pipe_session_key, p->dc->sess_key, 16);
1017                         } else {
1018                                 /* Get the pipe session key from the schannel. */
1019                                 if (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL || p->auth.a_u.schannel_auth == NULL) {
1020                                         return NT_STATUS_INVALID_HANDLE;
1021                                 }
1022                                 memcpy(pipe_session_key, p->auth.a_u.schannel_auth->sess_key, 16);
1023                         }
1024                         SamOEMhash(user_session_key, pipe_session_key, 16);
1025                         memset(pipe_session_key, '\0', 16);
1026                 }
1027                 if (server_info->lm_session_key.length) {
1028                         memcpy(lm_session_key,
1029                                server_info->lm_session_key.data,
1030                                MIN(sizeof(lm_session_key),
1031                                    server_info->lm_session_key.length));
1032                         if (process_creds) {
1033                                 /* Get the pipe session key from the creds. */
1034                                 memcpy(pipe_session_key, p->dc->sess_key, 16);
1035                         } else {
1036                                 /* Get the pipe session key from the schannel. */
1037                                 if (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL || p->auth.a_u.schannel_auth == NULL) {
1038                                         return NT_STATUS_INVALID_HANDLE;
1039                                 }
1040                                 memcpy(pipe_session_key, p->auth.a_u.schannel_auth->sess_key, 16);
1041                         }
1042                         SamOEMhash(lm_session_key, pipe_session_key, 16);
1043                         memset(pipe_session_key, '\0', 16);
1044                 }
1045
1046                 init_net_user_info3(p->mem_ctx, usr_info,
1047                                     user_rid,
1048                                     group_rid,
1049                                     pdb_get_username(sampw),
1050                                     pdb_get_fullname(sampw),
1051                                     pdb_get_homedir(sampw),
1052                                     pdb_get_dir_drive(sampw),
1053                                     pdb_get_logon_script(sampw),
1054                                     pdb_get_profile_path(sampw),
1055                                     pdb_get_logon_time(sampw),
1056                                     get_time_t_max(),
1057                                     get_time_t_max(),
1058                                     pdb_get_pass_last_set_time(sampw),
1059                                     pdb_get_pass_can_change_time(sampw),
1060                                     pdb_get_pass_must_change_time(sampw),
1061                                     0, /* logon_count */
1062                                     0, /* bad_pw_count */
1063                                     num_gids,    /* uint32 num_groups */
1064                                     gids    , /* DOM_GID *gids */
1065                                     LOGON_EXTRA_SIDS, /* uint32 user_flgs (?) */
1066                                     pdb_get_acct_ctrl(sampw),
1067                                     server_info->user_session_key.length ? user_session_key : NULL,
1068                                     server_info->lm_session_key.length ? lm_session_key : NULL,
1069                                     my_name     , /* char *logon_srv */
1070                                     pdb_get_domain(sampw),
1071                                     &domain_sid);     /* DOM_SID *dom_sid */
1072                 ZERO_STRUCT(user_session_key);
1073                 ZERO_STRUCT(lm_session_key);
1074         }
1075         TALLOC_FREE(server_info);
1076         return status;
1077 }
1078
1079 /*************************************************************************
1080  _net_sam_logon
1081  *************************************************************************/
1082
1083 NTSTATUS _net_sam_logon(pipes_struct *p, NET_Q_SAM_LOGON *q_u, NET_R_SAM_LOGON *r_u)
1084 {
1085         return _net_sam_logon_internal(p, q_u, r_u, True);
1086 }
1087  
1088 /*************************************************************************
1089  _net_sam_logon_ex - no credential chaining. Map into net sam logon.
1090  *************************************************************************/
1091
1092 NTSTATUS _net_sam_logon_ex(pipes_struct *p, NET_Q_SAM_LOGON_EX *q_u, NET_R_SAM_LOGON_EX *r_u)
1093 {
1094         NET_Q_SAM_LOGON q;
1095         NET_R_SAM_LOGON r;
1096
1097         ZERO_STRUCT(q);
1098         ZERO_STRUCT(r);
1099
1100         /* Only allow this if the pipe is protected. */
1101         if (p->auth.auth_type != PIPE_AUTH_TYPE_SCHANNEL) {
1102                 DEBUG(0,("_net_sam_logon_ex: client %s not using schannel for netlogon\n",
1103                         get_remote_machine_name() ));
1104                 return NT_STATUS_INVALID_PARAMETER;
1105         }
1106
1107         /* Map a NET_Q_SAM_LOGON_EX to NET_Q_SAM_LOGON. */
1108         q.validation_level = q_u->validation_level;
1109
1110         /* Map a DOM_SAM_INFO_EX into a DOM_SAM_INFO with no creds. */
1111         q.sam_id.client.login = q_u->sam_id.client;
1112         q.sam_id.logon_level = q_u->sam_id.logon_level;
1113         q.sam_id.ctr = q_u->sam_id.ctr;
1114
1115         r_u->status = _net_sam_logon_internal(p, &q, &r, False);
1116
1117         if (!NT_STATUS_IS_OK(r_u->status)) {
1118                 return r_u->status;
1119         }
1120
1121         /* Map the NET_R_SAM_LOGON to NET_R_SAM_LOGON_EX. */
1122         r_u->switch_value = r.switch_value;
1123         r_u->user = r.user;
1124         r_u->auth_resp = r.auth_resp;
1125         r_u->flags = 0; /* FIXME ! */
1126         return r_u->status;
1127 }
1128
1129 /*************************************************************************
1130  _ds_enum_dom_trusts
1131  *************************************************************************/
1132 #if 0   /* JERRY -- not correct */
1133 NTSTATUS _ds_enum_dom_trusts(pipes_struct *p, DS_Q_ENUM_DOM_TRUSTS *q_u,
1134                              DS_R_ENUM_DOM_TRUSTS *r_u)
1135 {
1136         NTSTATUS status = NT_STATUS_OK;
1137
1138         /* TODO: According to MSDN, the can only be executed against a 
1139            DC or domain member running Windows 2000 or later.  Need
1140            to test against a standalone 2k server and see what it 
1141            does.  A windows 2000 DC includes its own domain in the 
1142            list.  --jerry */
1143
1144         return status;
1145 }
1146 #endif  /* JERRY */