source: vendor/3.5.0/source3/nmbd/nmbd_processlogon.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 24.1 KB
Line 
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
31struct 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 */
41static 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
56static 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
71struct nmbd_proxy_logon_context {
72 struct cldap_socket *cldap_sock;
73};
74
75static struct nmbd_proxy_logon_context *global_nmbd_proxy_logon;
76
77bool 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
134struct 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
145static 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
152static void nmbd_proxy_logon_done(struct tevent_req *subreq);
153
154static 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_netlogon_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
264static 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 = data_blob_null;
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/****************************************************************************
301Process a domain logon packet
302**************************************************************************/
303
304void 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 \
341logons 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, \
525reporting %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}
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