8173337da07ca74fe2cfcbea203f131ddf78806e
[ira/wip.git] / source3 / nmbd / nmbd_processlogon.c
1 /* 
2    Unix SMB/CIFS implementation.
3    NBT netbios routines and daemon - version 2
4    Copyright (C) Andrew Tridgell 1994-1998
5    Copyright (C) Luke Kenneth Casson Leighton 1994-1998
6    Copyright (C) Jeremy Allison 1994-2003
7    Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002
8    
9    This program is free software; you can redistribute it and/or modify
10    it under the terms of the GNU General Public License as published by
11    the Free Software Foundation; either version 3 of the License, or
12    (at your option) any later version.
13    
14    This program is distributed in the hope that it will be useful,
15    but WITHOUT ANY WARRANTY; without even the implied warranty of
16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17    GNU General Public License for more details.
18    
19    You should have received a copy of the GNU General Public License
20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
21    
22    Revision History:
23
24 */
25
26 #include "includes.h"
27 #include "../libcli/netlogon.h"
28 #include "../libcli/cldap/cldap.h"
29 #include "../lib/tsocket/tsocket.h"
30
31 struct sam_database_info {
32         uint32 index;
33         uint32 serial_lo, serial_hi;
34         uint32 date_lo, date_hi;
35 };
36
37 /**
38  * check whether the client belongs to the hosts
39  * for which initial logon should be delayed...
40  */
41 static bool delay_logon(const char *peer_name, const char *peer_addr)
42 {
43         const char **delay_list = lp_init_logon_delayed_hosts();
44         const char *peer[2];
45
46         if (delay_list == NULL) {
47                 return False;
48         }
49
50         peer[0] = peer_name;
51         peer[1] = peer_addr;
52
53         return list_match(delay_list, (const char *)peer, client_match);
54 }
55
56 static void delayed_init_logon_handler(struct event_context *event_ctx,
57                                        struct timed_event *te,
58                                        struct timeval now,
59                                        void *private_data)
60 {
61         struct packet_struct *p = (struct packet_struct *)private_data;
62
63         DEBUG(10, ("delayed_init_logon_handler (%lx): re-queuing packet.\n",
64                    (unsigned long)te));
65
66         queue_packet(p);
67
68         TALLOC_FREE(te);
69 }
70
71 struct nmbd_proxy_logon_context {
72         struct cldap_socket *cldap_sock;
73 };
74
75 static struct nmbd_proxy_logon_context *global_nmbd_proxy_logon;
76
77 bool initialize_nmbd_proxy_logon(void)
78 {
79         const char *cldap_server = lp_parm_const_string(-1, "nmbd_proxy_logon",
80                                                         "cldap_server", NULL);
81         struct nmbd_proxy_logon_context *ctx;
82         NTSTATUS status;
83         struct in_addr addr;
84         char addrstr[INET_ADDRSTRLEN];
85         const char *server_str;
86         int ret;
87         struct tsocket_address *server_addr;
88
89         if (!cldap_server) {
90                 return true;
91         }
92
93         addr = interpret_addr2(cldap_server);
94         server_str = inet_ntop(AF_INET, &addr,
95                              addrstr, sizeof(addrstr));
96         if (!server_str || strcmp("0.0.0.0", server_str) == 0) {
97                 DEBUG(0,("Failed to resolve[%s] for nmbd_proxy_logon\n",
98                          cldap_server));
99                 return false;
100         }
101
102         ctx = talloc_zero(nmbd_event_context(),
103                           struct nmbd_proxy_logon_context);
104         if (!ctx) {
105                 return false;
106         }
107
108         ret = tsocket_address_inet_from_strings(ctx, "ipv4",
109                                                 server_str, LDAP_PORT,
110                                                 &server_addr);
111         if (ret != 0) {
112                 TALLOC_FREE(ctx);
113                 status = map_nt_error_from_unix(errno);
114                 DEBUG(0,("Failed to create cldap tsocket_address for %s - %s\n",
115                          server_str, nt_errstr(status)));
116                 return false;
117         }
118
119         /* we create a connected udp socket */
120         status = cldap_socket_init(ctx, nmbd_event_context(), NULL,
121                                    server_addr, &ctx->cldap_sock);
122         TALLOC_FREE(server_addr);
123         if (!NT_STATUS_IS_OK(status)) {
124                 TALLOC_FREE(ctx);
125                 DEBUG(0,("failed to create cldap socket for %s: %s\n",
126                         server_str, nt_errstr(status)));
127                 return false;
128         }
129
130         global_nmbd_proxy_logon = ctx;
131         return true;
132 }
133
134 struct nmbd_proxy_logon_state {
135         struct in_addr local_ip;
136         struct packet_struct *p;
137         const char *remote_name;
138         uint8_t remote_name_type;
139         const char *remote_mailslot;
140         struct nbt_netlogon_packet req;
141         struct nbt_netlogon_response resp;
142         struct cldap_netlogon io;
143 };
144
145 static int nmbd_proxy_logon_state_destructor(struct nmbd_proxy_logon_state *s)
146 {
147         s->p->locked = false;
148         free_packet(s->p);
149         return 0;
150 }
151
152 static void nmbd_proxy_logon_done(struct tevent_req *subreq);
153
154 static void nmbd_proxy_logon(struct nmbd_proxy_logon_context *ctx,
155                              struct in_addr local_ip,
156                              struct packet_struct *p,
157                              uint8_t *buf,
158                              uint32_t len)
159 {
160         struct nmbd_proxy_logon_state *state;
161         enum ndr_err_code ndr_err;
162         DATA_BLOB blob = data_blob_const(buf, len);
163         const char *computer_name = NULL;
164         const char *mailslot_name = NULL;
165         const char *user_name = NULL;
166         const char *domain_sid = NULL;
167         uint32_t acct_control = 0;
168         uint32_t nt_version = 0;
169         struct tevent_req *subreq;
170         fstring source_name;
171         struct dgram_packet *dgram = &p->packet.dgram;
172
173         state = TALLOC_ZERO_P(ctx, struct nmbd_proxy_logon_state);
174         if (!state) {
175                 DEBUG(0,("failed to allocate nmbd_proxy_logon_state\n"));
176                 return;
177         }
178
179         pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
180         state->remote_name = talloc_strdup(state, source_name);
181         state->remote_name_type = dgram->source_name.name_type,
182         state->local_ip = local_ip;
183         state->p = p;
184
185         ndr_err = ndr_pull_struct_blob(
186                 &blob, state, NULL, &state->req,
187                 (ndr_pull_flags_fn_t)ndr_pull_nbt_netlogon_packet);
188         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
189                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
190                 DEBUG(0,("failed parse nbt_letlogon_packet: %s\n",
191                         nt_errstr(status)));
192                 TALLOC_FREE(state);
193                 return;
194         }
195
196         if (DEBUGLEVEL >= 10) {
197                 DEBUG(10, ("nmbd_proxy_logon:\n"));
198                 NDR_PRINT_DEBUG(nbt_netlogon_packet, &state->req);
199         }
200
201         switch (state->req.command) {
202         case LOGON_SAM_LOGON_REQUEST:
203                 computer_name   = state->req.req.logon.computer_name;
204                 user_name       = state->req.req.logon.user_name;
205                 mailslot_name   = state->req.req.logon.mailslot_name;
206                 acct_control    = state->req.req.logon.acct_control;
207                 if (state->req.req.logon.sid_size > 0) {
208                         domain_sid = dom_sid_string(state,
209                                                     &state->req.req.logon.sid);
210                         if (!domain_sid) {
211                                 DEBUG(0,("failed to get a string for sid\n"));
212                                 TALLOC_FREE(state);
213                                 return;
214                         }
215                 }
216                 nt_version      = state->req.req.logon.nt_version;
217                 break;
218
219         default:
220                 /* this can't happen as the caller already checks the command */
221                 break;
222         }
223
224         state->remote_mailslot = mailslot_name;
225
226         if (user_name && strlen(user_name) == 0) {
227                 user_name = NULL;
228         }
229
230         if (computer_name && strlen(computer_name) == 0) {
231                 computer_name = NULL;
232         }
233
234         /*
235          * as the socket is connected,
236          * we don't need to specify the destination
237          */
238         state->io.in.dest_address       = NULL;
239         state->io.in.dest_port          = 0;
240         state->io.in.realm              = NULL;
241         state->io.in.host               = computer_name;
242         state->io.in.user               = user_name;
243         state->io.in.domain_guid        = NULL;
244         state->io.in.domain_sid         = domain_sid;
245         state->io.in.acct_control       = acct_control;
246         state->io.in.version            = nt_version;
247         state->io.in.map_response       = false;
248
249         subreq = cldap_netlogon_send(state,
250                                      ctx->cldap_sock,
251                                      &state->io);
252         if (!subreq) {
253                 DEBUG(0,("failed to send cldap netlogon call\n"));
254                 TALLOC_FREE(state);
255                 return;
256         }
257         tevent_req_set_callback(subreq, nmbd_proxy_logon_done, state);
258
259         /* we reply async */
260         state->p->locked = true;
261         talloc_set_destructor(state, nmbd_proxy_logon_state_destructor);
262 }
263
264 static void nmbd_proxy_logon_done(struct tevent_req *subreq)
265 {
266         struct nmbd_proxy_logon_state *state =
267                 tevent_req_callback_data(subreq,
268                 struct nmbd_proxy_logon_state);
269         NTSTATUS status;
270         DATA_BLOB response;
271
272         status = cldap_netlogon_recv(subreq, NULL, state, &state->io);
273         if (!NT_STATUS_IS_OK(status)) {
274                 DEBUG(0,("failed to recv cldap netlogon call: %s\n",
275                         nt_errstr(status)));
276                 TALLOC_FREE(state);
277                 return;
278         }
279
280         status = push_netlogon_samlogon_response(&response, state, NULL,
281                                                  &state->io.out.netlogon);
282         if (!NT_STATUS_IS_OK(status)) {
283                 DEBUG(0,("failed to push netlogon_samlogon_response: %s\n",
284                         nt_errstr(status)));
285                 TALLOC_FREE(state);
286                 return;
287         }
288
289         send_mailslot(true, state->remote_mailslot,
290                       (char *)response.data, response.length,
291                       global_myname(), 0x0,
292                       state->remote_name,
293                       state->remote_name_type,
294                       state->p->ip,
295                       state->local_ip,
296                       state->p->port);
297         TALLOC_FREE(state);
298 }
299
300 /****************************************************************************
301 Process a domain logon packet
302 **************************************************************************/
303
304 void process_logon_packet(struct packet_struct *p, char *buf,int len, 
305                           const char *mailslot)
306 {
307         struct dgram_packet *dgram = &p->packet.dgram;
308         fstring my_name;
309         fstring reply_name;
310         char outbuf[1024];
311         int code;
312         uint16 token = 0;
313         uint32 ntversion = 0;
314         uint16 lmnttoken = 0;
315         uint16 lm20token = 0;
316         uint32 domainsidsize;
317         bool short_request = False;
318         char *getdc;
319         char *uniuser; /* Unicode user name. */
320         fstring ascuser;
321         char *unicomp; /* Unicode computer name. */
322         size_t size;
323         struct sockaddr_storage ss;
324         const struct sockaddr_storage *pss;
325         struct in_addr ip;
326
327         in_addr_to_sockaddr_storage(&ss, p->ip);
328         pss = iface_ip((struct sockaddr *)&ss);
329         if (!pss) {
330                 DEBUG(5,("process_logon_packet:can't find outgoing interface "
331                         "for packet from IP %s\n",
332                         inet_ntoa(p->ip) ));
333                 return;
334         }
335         ip = ((struct sockaddr_in *)pss)->sin_addr;
336
337         memset(outbuf, 0, sizeof(outbuf));
338
339         if (!lp_domain_logons()) {
340                 DEBUG(5,("process_logon_packet: Logon packet received from IP %s and domain \
341 logons are not enabled.\n", inet_ntoa(p->ip) ));
342                 return;
343         }
344
345         fstrcpy(my_name, global_myname());
346
347         code = get_safe_SVAL(buf,len,buf,0,-1);
348         DEBUG(4,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code));
349
350         switch (code) {
351                 case 0:
352                         {
353                                 fstring mach_str, user_str, getdc_str;
354                                 char *q = buf + 2;
355                                 char *machine = q;
356                                 char *user = skip_string(buf,len,machine);
357
358                                 if (!user || PTR_DIFF(user, buf) >= len) {
359                                         DEBUG(0,("process_logon_packet: bad packet\n"));
360                                         return;
361                                 }
362                                 getdc = skip_string(buf,len,user);
363
364                                 if (!getdc || PTR_DIFF(getdc, buf) >= len) {
365                                         DEBUG(0,("process_logon_packet: bad packet\n"));
366                                         return;
367                                 }
368                                 q = skip_string(buf,len,getdc);
369
370                                 if (!q || PTR_DIFF(q + 5, buf) > len) {
371                                         DEBUG(0,("process_logon_packet: bad packet\n"));
372                                         return;
373                                 }
374                                 token = SVAL(q,3);
375
376                                 fstrcpy(reply_name,my_name);
377
378                                 pull_ascii_fstring(mach_str, machine);
379                                 pull_ascii_fstring(user_str, user);
380                                 pull_ascii_fstring(getdc_str, getdc);
381
382                                 DEBUG(5,("process_logon_packet: Domain login request from %s at IP %s user=%s token=%x\n",
383                                         mach_str,inet_ntoa(p->ip),user_str,token));
384
385                                 q = outbuf;
386                                 SSVAL(q, 0, 6);
387                                 q += 2;
388
389                                 fstrcpy(reply_name, "\\\\");
390                                 fstrcat(reply_name, my_name);
391                                 size = push_ascii(q,reply_name,
392                                                 sizeof(outbuf)-PTR_DIFF(q, outbuf),
393                                                 STR_TERMINATE);
394                                 if (size == (size_t)-1) {
395                                         return;
396                                 }
397                                 q = skip_string(outbuf,sizeof(outbuf),q); /* PDC name */
398
399                                 SSVAL(q, 0, token);
400                                 q += 2;
401
402                                 dump_data(4, (uint8 *)outbuf, PTR_DIFF(q, outbuf));
403
404                                 send_mailslot(True, getdc_str,
405                                                 outbuf,PTR_DIFF(q,outbuf),
406                                                 global_myname(), 0x0,
407                                                 mach_str,
408                                                 dgram->source_name.name_type,
409                                                 p->ip, ip, p->port);
410                                 break;
411                         }
412
413                 case LOGON_PRIMARY_QUERY:
414                         {
415                                 fstring mach_str, getdc_str;
416                                 fstring source_name;
417                                 char *q = buf + 2;
418                                 char *machine = q;
419
420                                 if (!lp_domain_master()) {
421                                         /* We're not Primary Domain Controller -- ignore this */
422                                         return;
423                                 }
424
425                                 getdc = skip_string(buf,len,machine);
426
427                                 if (!getdc || PTR_DIFF(getdc, buf) >= len) {
428                                         DEBUG(0,("process_logon_packet: bad packet\n"));
429                                         return;
430                                 }
431                                 q = skip_string(buf,len,getdc);
432
433                                 if (!q || PTR_DIFF(q, buf) >= len) {
434                                         DEBUG(0,("process_logon_packet: bad packet\n"));
435                                         return;
436                                 }
437                                 q = ALIGN2(q, buf);
438
439                                 /* At this point we can work out if this is a W9X or NT style
440                                    request. Experiments show that the difference is wether the
441                                    packet ends here. For a W9X request we now end with a pair of
442                                    bytes (usually 0xFE 0xFF) whereas with NT we have two further
443                                    strings - the following is a simple way of detecting this */
444
445                                 if (len - PTR_DIFF(q, buf) <= 3) {
446                                         short_request = True;
447                                 } else {
448                                         unicomp = q;
449
450                                         if (PTR_DIFF(q, buf) >= len) {
451                                                 DEBUG(0,("process_logon_packet: bad packet\n"));
452                                                 return;
453                                         }
454
455                                         /* A full length (NT style) request */
456                                         q = skip_unibuf(unicomp, PTR_DIFF(buf + len, unicomp));
457
458                                         if (PTR_DIFF(q, buf) >= len) {
459                                                 DEBUG(0,("process_logon_packet: bad packet\n"));
460                                                 return;
461                                         }
462
463                                         if (len - PTR_DIFF(q, buf) > 8) {
464                                                 /* with NT5 clients we can sometimes
465                                                         get additional data - a length specificed string
466                                                         containing the domain name, then 16 bytes of
467                                                         data (no idea what it is) */
468                                                 int dom_len = CVAL(q, 0);
469                                                 q++;
470                                                 if (dom_len != 0) {
471                                                         q += dom_len + 1;
472                                                 }
473                                                 q += 16;
474                                         }
475
476                                         if (PTR_DIFF(q + 8, buf) > len) {
477                                                 DEBUG(0,("process_logon_packet: bad packet\n"));
478                                                 return;
479                                         }
480
481                                         ntversion = IVAL(q, 0);
482                                         lmnttoken = SVAL(q, 4);
483                                         lm20token = SVAL(q, 6);
484                                 }
485
486                                 /* Construct reply. */
487                                 q = outbuf;
488                                 SSVAL(q, 0, NETLOGON_RESPONSE_FROM_PDC);
489                                 q += 2;
490
491                                 fstrcpy(reply_name,my_name);
492                                 size = push_ascii(q, reply_name,
493                                                 sizeof(outbuf)-PTR_DIFF(q, outbuf),
494                                                 STR_TERMINATE);
495                                 if (size == (size_t)-1) {
496                                         return;
497                                 }
498                                 q = skip_string(outbuf,sizeof(outbuf),q); /* PDC name */
499
500                                 /* PDC and domain name */
501                                 if (!short_request) {
502                                         /* Make a full reply */
503                                         q = ALIGN2(q, outbuf);
504
505                                         q += dos_PutUniCode(q, my_name,
506                                                 sizeof(outbuf) - PTR_DIFF(q, outbuf),
507                                                 True); /* PDC name */
508                                         q += dos_PutUniCode(q, lp_workgroup(),
509                                                 sizeof(outbuf) - PTR_DIFF(q, outbuf),
510                                                 True); /* Domain name*/
511                                         if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) {
512                                                 return;
513                                         }
514                                         SIVAL(q, 0, 1); /* our nt version */
515                                         SSVAL(q, 4, 0xffff); /* our lmnttoken */
516                                         SSVAL(q, 6, 0xffff); /* our lm20token */
517                                         q += 8;
518                                 }
519
520                                 /* RJS, 21-Feb-2000, we send a short reply if the request was short */
521
522                                 pull_ascii_fstring(mach_str, machine);
523
524                                 DEBUG(5,("process_logon_packet: GETDC request from %s at IP %s, \
525 reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n",
526                                         mach_str,inet_ntoa(p->ip), reply_name, lp_workgroup(),
527                                         NETLOGON_RESPONSE_FROM_PDC, (uint32)ntversion, (uint32)lmnttoken,
528                                         (uint32)lm20token ));
529
530                                 dump_data(4, (uint8 *)outbuf, PTR_DIFF(q, outbuf));
531
532                                 pull_ascii_fstring(getdc_str, getdc);
533                                 pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
534
535                                 send_mailslot(True, getdc_str,
536                                         outbuf,PTR_DIFF(q,outbuf),
537                                         global_myname(), 0x0,
538                                         source_name,
539                                         dgram->source_name.name_type,
540                                         p->ip, ip, p->port);
541                                 return;
542                         }
543
544                 case LOGON_SAM_LOGON_REQUEST:
545
546                         {
547                                 fstring getdc_str;
548                                 fstring source_name;
549                                 char *source_addr;
550                                 char *q = buf + 2;
551                                 fstring asccomp;
552
553                                 if (global_nmbd_proxy_logon) {
554                                         nmbd_proxy_logon(global_nmbd_proxy_logon,
555                                                          ip, p, (uint8_t *)buf, len);
556                                         return;
557                                 }
558
559                                 q += 2;
560
561                                 if (PTR_DIFF(q, buf) >= len) {
562                                         DEBUG(0,("process_logon_packet: bad packet\n"));
563                                         return;
564                                 }
565
566                                 unicomp = q;
567                                 uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp));
568
569                                 if (PTR_DIFF(uniuser, buf) >= len) {
570                                         DEBUG(0,("process_logon_packet: bad packet\n"));
571                                         return;
572                                 }
573
574                                 getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser));
575
576                                 if (PTR_DIFF(getdc, buf) >= len) {
577                                         DEBUG(0,("process_logon_packet: bad packet\n"));
578                                         return;
579                                 }
580
581                                 q = skip_string(buf,len,getdc);
582
583                                 if (!q || PTR_DIFF(q + 8, buf) >= len) {
584                                         DEBUG(0,("process_logon_packet: bad packet\n"));
585                                         return;
586                                 }
587
588                                 q += 4; /* Account Control Bits - indicating username type */
589                                 domainsidsize = IVAL(q, 0);
590                                 q += 4;
591
592                                 DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST sidsize %d, len = %d\n", domainsidsize, len));
593
594                                 if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
595                                         q += domainsidsize;
596                                         q = ALIGN4(q, buf);
597                                 }
598
599                                 DEBUG(5,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %ld\n", len, (unsigned long)PTR_DIFF(q, buf) ));
600
601                                 if (len - PTR_DIFF(q, buf) > 8) {
602                                         /* with NT5 clients we can sometimes
603                                                 get additional data - a length specificed string
604                                                 containing the domain name, then 16 bytes of
605                                                 data (no idea what it is) */
606                                         int dom_len = CVAL(q, 0);
607                                         q++;
608                                         if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
609                                                 q += dom_len + 1;
610                                         }
611                                         q += 16;
612                                 }
613
614                                 if (PTR_DIFF(q + 8, buf) > len) {
615                                         DEBUG(0,("process_logon_packet: bad packet\n"));
616                                         return;
617                                 }
618
619                                 ntversion = IVAL(q, 0);
620                                 lmnttoken = SVAL(q, 4);
621                                 lm20token = SVAL(q, 6);
622                                 q += 8;
623
624                                 DEBUG(3,("process_logon_packet: LOGON_SAM_LOGON_REQUEST sidsize %d ntv %d\n", domainsidsize, ntversion));
625
626                                 /*
627                                  * we respond regadless of whether the machine is in our password 
628                                  * database. If it isn't then we let smbd send an appropriate error.
629                                  * Let's ignore the SID.
630                                  */
631                                 pull_ucs2_fstring(ascuser, uniuser);
632                                 pull_ucs2_fstring(asccomp, unicomp);
633                                 DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST user %s\n", ascuser));
634
635                                 fstrcpy(reply_name, "\\\\"); /* Here it wants \\LOGONSERVER. */
636                                 fstrcat(reply_name, my_name);
637
638                                 DEBUG(5,("process_logon_packet: LOGON_SAM_LOGON_REQUEST request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n",
639                                         asccomp,inet_ntoa(p->ip), ascuser, reply_name, lp_workgroup(),
640                                 LOGON_SAM_LOGON_RESPONSE ,lmnttoken));
641
642                                 /* Construct reply. */
643
644                                 q = outbuf;
645                                 /* we want the simple version unless we are an ADS PDC..which means  */
646                                 /* never, at least for now */
647                                 if ((ntversion < 11) || (SEC_ADS != lp_security()) || (ROLE_DOMAIN_PDC != lp_server_role())) {
648                                         if (SVAL(uniuser, 0) == 0) {
649                                                 SSVAL(q, 0, LOGON_SAM_LOGON_USER_UNKNOWN);      /* user unknown */
650                                         } else {
651                                                 SSVAL(q, 0, LOGON_SAM_LOGON_RESPONSE);
652                                         }
653
654                                         q += 2;
655
656                                         q += dos_PutUniCode(q, reply_name,
657                                                 sizeof(outbuf) - PTR_DIFF(q, outbuf),
658                                                 True);
659                                         q += dos_PutUniCode(q, ascuser,
660                                                 sizeof(outbuf) - PTR_DIFF(q, outbuf),
661                                                 True);
662                                         q += dos_PutUniCode(q, lp_workgroup(),
663                                                 sizeof(outbuf) - PTR_DIFF(q, outbuf),
664                                                 True);
665                                 }
666 #ifdef HAVE_ADS
667                                 else {
668                                         struct GUID domain_guid;
669                                         UUID_FLAT flat_guid;
670                                         char *domain;
671                                         char *hostname;
672                                         char *component, *dc, *q1;
673                                         char *q_orig = q;
674                                         int str_offset;
675                                         char *saveptr = NULL;
676
677                                         domain = get_mydnsdomname(talloc_tos());
678                                         if (!domain) {
679                                                 DEBUG(2,
680                                                 ("get_mydnsdomname failed.\n"));
681                                                 return;
682                                         }
683                                         hostname = get_myname(talloc_tos());
684                                         if (!hostname) {
685                                                 DEBUG(2,
686                                                 ("get_myname failed.\n"));
687                                                 return;
688                                         }
689
690                                         if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) {
691                                                 return;
692                                         }
693                                         if (SVAL(uniuser, 0) == 0) {
694                                                 SIVAL(q, 0, LOGON_SAM_LOGON_USER_UNKNOWN_EX);   /* user unknown */
695                                         } else {
696                                                 SIVAL(q, 0, LOGON_SAM_LOGON_RESPONSE_EX);
697                                         }
698                                         q += 4;
699
700                                         SIVAL(q, 0, NBT_SERVER_PDC|NBT_SERVER_GC|NBT_SERVER_LDAP|NBT_SERVER_DS|
701                                                 NBT_SERVER_KDC|NBT_SERVER_TIMESERV|NBT_SERVER_CLOSEST|NBT_SERVER_WRITABLE);
702                                         q += 4;
703
704                                         /* Push Domain GUID */
705                                         if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < UUID_FLAT_SIZE) {
706                                                 return;
707                                         }
708                                         if (False == secrets_fetch_domain_guid(domain, &domain_guid)) {
709                                                 DEBUG(2, ("Could not fetch DomainGUID for %s\n", domain));
710                                                 return;
711                                         }
712
713                                         smb_uuid_pack(domain_guid, &flat_guid);
714                                         memcpy(q, &flat_guid.info, UUID_FLAT_SIZE);
715                                         q += UUID_FLAT_SIZE;
716
717                                         /* Forest */
718                                         str_offset = q - q_orig;
719                                         dc = domain;
720                                         q1 = q;
721                                         while ((component = strtok_r(dc, ".", &saveptr)) != NULL) {
722                                                 dc = NULL;
723                                                 if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 1) {
724                                                         return;
725                                                 }
726                                                 size = push_ascii(&q[1], component,
727                                                         sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
728                                                         0);
729                                                 if (size == (size_t)-1 || size > 0xff) {
730                                                         return;
731                                                 }
732                                                 SCVAL(q, 0, size);
733                                                 q += (size + 1);
734                                         }
735
736                                         /* Unk0 */
737                                         if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 4) {
738                                                 return;
739                                         }
740                                         SCVAL(q, 0, 0);
741                                         q++;
742
743                                         /* Domain */
744                                         SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
745                                         SCVAL(q, 1, str_offset & 0xFF);
746                                         q += 2;
747
748                                         /* Hostname */
749                                         size = push_ascii(&q[1], hostname,
750                                                         sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
751                                                         0);
752                                         if (size == (size_t)-1 || size > 0xff) {
753                                                 return;
754                                         }
755                                         SCVAL(q, 0, size);
756                                         q += (size + 1);
757
758                                         if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 3) {
759                                                 return;
760                                         }
761
762                                         SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
763                                         SCVAL(q, 1, str_offset & 0xFF);
764                                         q += 2;
765
766                                         /* NETBIOS of domain */
767                                         size = push_ascii(&q[1], lp_workgroup(),
768                                                         sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
769                                                         STR_UPPER);
770                                         if (size == (size_t)-1 || size > 0xff) {
771                                                 return;
772                                         }
773                                         SCVAL(q, 0, size);
774                                         q += (size + 1);
775
776                                         /* Unk1 */
777                                         if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 2) {
778                                                 return;
779                                         }
780
781                                         SCVAL(q, 0, 0);
782                                         q++;
783
784                                         /* NETBIOS of hostname */
785                                         size = push_ascii(&q[1], my_name,
786                                                         sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
787                                                         0);
788                                         if (size == (size_t)-1 || size > 0xff) {
789                                                 return;
790                                         }
791                                         SCVAL(q, 0, size);
792                                         q += (size + 1);
793
794                                         /* Unk2 */
795                                         if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 4) {
796                                                 return;
797                                         }
798
799                                         SCVAL(q, 0, 0);
800                                         q++;
801
802                                         /* User name */
803                                         if (SVAL(uniuser, 0) != 0) {
804                                                 size = push_ascii(&q[1], ascuser,
805                                                         sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
806                                                         0);
807                                                 if (size == (size_t)-1 || size > 0xff) {
808                                                         return;
809                                                 }
810                                                 SCVAL(q, 0, size);
811                                                 q += (size + 1);
812                                         }
813
814                                         q_orig = q;
815                                         /* Site name */
816                                         if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 1) {
817                                                 return;
818                                         }
819                                         size = push_ascii(&q[1], "Default-First-Site-Name",
820                                                         sizeof(outbuf) - PTR_DIFF(q+1, outbuf),
821                                                         0);
822                                         if (size == (size_t)-1 || size > 0xff) {
823                                                 return;
824                                         }
825                                         SCVAL(q, 0, size);
826                                         q += (size + 1);
827
828                                         if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 18) {
829                                                 return;
830                                         }
831
832                                         /* Site name (2) */
833                                         str_offset = q - q_orig;
834                                         SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
835                                         SCVAL(q, 1, str_offset & 0xFF);
836                                         q += 2;
837
838                                         SCVAL(q, 0, PTR_DIFF(q,q1));
839                                         SCVAL(q, 1, 0x10); /* unknown */
840
841                                         SIVAL(q, 0, 0x00000002);
842                                         q += 4; /* unknown */
843                                         SIVAL(q, 0, ntohl(ip.s_addr));
844                                         q += 4;
845                                         SIVAL(q, 0, 0x00000000);
846                                         q += 4; /* unknown */
847                                         SIVAL(q, 0, 0x00000000);
848                                         q += 4; /* unknown */
849                                 }
850 #endif
851
852                                 if (sizeof(outbuf) - PTR_DIFF(q, outbuf) < 8) {
853                                         return;
854                                 }
855
856                                 /* tell the client what version we are */
857                                 SIVAL(q, 0, ((ntversion < 11) || (SEC_ADS != lp_security())) ? 1 : 13); 
858                                 /* our ntversion */
859                                 SSVAL(q, 4, 0xffff); /* our lmnttoken */
860                                 SSVAL(q, 6, 0xffff); /* our lm20token */
861                                 q += 8;
862
863                                 dump_data(4, (uint8 *)outbuf, PTR_DIFF(q, outbuf));
864
865                                 pull_ascii_fstring(getdc_str, getdc);
866                                 pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
867                                 source_addr = SMB_STRDUP(inet_ntoa(dgram->header.source_ip));
868                                 if (source_addr == NULL) {
869                                         DEBUG(3, ("out of memory copying client"
870                                                   " address string\n"));
871                                         return;
872                                 }
873
874                                 /*
875                                  * handle delay.
876                                  * packets requeued after delay are marked as
877                                  * locked.
878                                  */
879                                 if ((p->locked == False) &&
880                                     (strlen(ascuser) == 0) &&
881                                     delay_logon(source_name, source_addr))
882                                 {
883                                         struct timeval when;
884
885                                         DEBUG(3, ("process_logon_packet: "
886                                                   "delaying initial logon "
887                                                   "reply for client %s(%s) for "
888                                                   "%u milliseconds\n",
889                                                   source_name, source_addr,
890                                                   lp_init_logon_delay()));
891
892                                         when = timeval_current_ofs(0,
893                                                 lp_init_logon_delay() * 1000);
894                                         p->locked = true;
895                                         event_add_timed(nmbd_event_context(),
896                                                         NULL,
897                                                         when,
898                                                         delayed_init_logon_handler,
899                                                         p);
900                                 } else {
901                                         DEBUG(3, ("process_logon_packet: "
902                                                   "processing delayed initial "
903                                                   "logon reply for client "
904                                                   "%s(%s)\n",
905                                                   source_name, source_addr));
906
907                                         p->locked = false;
908                                         send_mailslot(true, getdc,
909                                                 outbuf,PTR_DIFF(q,outbuf),
910                                                 global_myname(), 0x0,
911                                                 source_name,
912                                                 dgram->source_name.name_type,
913                                                 p->ip, ip, p->port);
914                                 }
915
916                                 SAFE_FREE(source_addr);
917
918                                 break;
919                         }
920
921                 /* Announce change to UAS or SAM.  Send by the domain controller when a
922                 replication event is required. */
923
924                 case NETLOGON_ANNOUNCE_UAS:
925                         DEBUG(5, ("Got NETLOGON_ANNOUNCE_UAS\n"));
926                         break;
927
928                 default:
929                         DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code));
930                         return;
931         }
932 }