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[Samba/gebeck_regimport.git] / source3 / nmbd / nmbd_processlogon.c
blobfc66e0d6b49b584ef2335fcdff0051c3b79a91d1
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 2 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, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22
23 Revision History:
24
25 */
26
27 #include "includes.h"
28
29 struct sam_database_info {
30 uint32 index;
31 uint32 serial_lo, serial_hi;
32 uint32 date_lo, date_hi;
33 };
34
35 /****************************************************************************
36 Send a message to smbd to do a sam delta sync
37 **************************************************************************/
38
39 static void send_repl_message(uint32 low_serial)
40 {
41 TDB_CONTEXT *tdb;
42
43 tdb = tdb_open_log(lock_path("connections.tdb"), 0,
44 TDB_DEFAULT, O_RDONLY, 0);
45
46 if (!tdb) {
47 DEBUG(3, ("send_repl_message(): failed to open connections "
48 "database\n"));
49 return;
50 }
51
52 DEBUG(3, ("sending replication message, serial = 0x%04x\n",
53 low_serial));
54
55 message_send_all(tdb, MSG_SMB_SAM_REPL, &low_serial,
56 sizeof(low_serial), False, NULL);
57
58 tdb_close(tdb);
59 }
60
61 /****************************************************************************
62 Process a domain logon packet
63 **************************************************************************/
64
65 void process_logon_packet(struct packet_struct *p, char *buf,int len,
66 const char *mailslot)
67 {
68 struct dgram_packet *dgram = &p->packet.dgram;
69 pstring my_name;
70 fstring reply_name;
71 pstring outbuf;
72 int code;
73 uint16 token = 0;
74 uint32 ntversion = 0;
75 uint16 lmnttoken = 0;
76 uint16 lm20token = 0;
77 uint32 domainsidsize;
78 BOOL short_request = False;
79 char *getdc;
80 char *uniuser; /* Unicode user name. */
81 pstring ascuser;
82 char *unicomp; /* Unicode computer name. */
83
84 memset(outbuf, 0, sizeof(outbuf));
85
86 if (!lp_domain_logons()) {
87 DEBUG(3,("process_logon_packet: Logon packet received from IP %s and domain \
88 logons are not enabled.\n", inet_ntoa(p->ip) ));
89 return;
90 }
91
92 pstrcpy(my_name, global_myname());
93
94 code = SVAL(buf,0);
95 DEBUG(1,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code));
96
97 switch (code) {
98 case 0:
99 {
100 fstring mach_str, user_str, getdc_str;
101 char *q = buf + 2;
102 char *machine = q;
103 char *user = skip_string(machine,1);
104
105 getdc = skip_string(user,1);
106 q = skip_string(getdc,1);
107 token = SVAL(q,3);
108
109 fstrcpy(reply_name,my_name);
110
111 pull_ascii_fstring(mach_str, machine);
112 pull_ascii_fstring(user_str, user);
113 pull_ascii_fstring(getdc_str, getdc);
114
115 DEBUG(3,("process_logon_packet: Domain login request from %s at IP %s user=%s token=%x\n",
116 mach_str,inet_ntoa(p->ip),user_str,token));
117
118 q = outbuf;
119 SSVAL(q, 0, 6);
120 q += 2;
121
122 fstrcpy(reply_name, "\\\\");
123 fstrcat(reply_name, my_name);
124 push_ascii_fstring(q, reply_name);
125 q = skip_string(q, 1); /* PDC name */
126
127 SSVAL(q, 0, token);
128 q += 2;
129
130 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
131
132 send_mailslot(True, getdc_str,
133 outbuf,PTR_DIFF(q,outbuf),
134 global_myname(), 0x0,
135 mach_str,
136 dgram->source_name.name_type,
137 p->ip, *iface_ip(p->ip), p->port);
138 break;
139 }
140
141 case QUERYFORPDC:
142 {
143 fstring mach_str, getdc_str;
144 nstring source_name;
145 char *q = buf + 2;
146 char *machine = q;
147
148 if (!lp_domain_master()) {
149 /* We're not Primary Domain Controller -- ignore this */
150 return;
151 }
152
153 getdc = skip_string(machine,1);
154 q = skip_string(getdc,1);
155 q = ALIGN2(q, buf);
156
157 /* At this point we can work out if this is a W9X or NT style
158 request. Experiments show that the difference is wether the
159 packet ends here. For a W9X request we now end with a pair of
160 bytes (usually 0xFE 0xFF) whereas with NT we have two further
161 strings - the following is a simple way of detecting this */
162
163 if (len - PTR_DIFF(q, buf) <= 3) {
164 short_request = True;
165 } else {
166 unicomp = q;
167
168 /* A full length (NT style) request */
169 q = skip_unibuf(unicomp, PTR_DIFF(buf + len, unicomp));
170
171 if (len - PTR_DIFF(q, buf) > 8) {
172 /* with NT5 clients we can sometimes
173 get additional data - a length specificed string
174 containing the domain name, then 16 bytes of
175 data (no idea what it is) */
176 int dom_len = CVAL(q, 0);
177 q++;
178 if (dom_len != 0) {
179 q += dom_len + 1;
180 }
181 q += 16;
182 }
183 ntversion = IVAL(q, 0);
184 lmnttoken = SVAL(q, 4);
185 lm20token = SVAL(q, 6);
186 }
187
188 /* Construct reply. */
189 q = outbuf;
190 SSVAL(q, 0, QUERYFORPDC_R);
191 q += 2;
192
193 fstrcpy(reply_name,my_name);
194 push_ascii_fstring(q, reply_name);
195 q = skip_string(q, 1); /* PDC name */
196
197 /* PDC and domain name */
198 if (!short_request) {
199 /* Make a full reply */
200 q = ALIGN2(q, outbuf);
201
202 q += dos_PutUniCode(q, my_name, sizeof(pstring), True); /* PDC name */
203 q += dos_PutUniCode(q, lp_workgroup(),sizeof(pstring), True); /* Domain name*/
204 SIVAL(q, 0, 1); /* our nt version */
205 SSVAL(q, 4, 0xffff); /* our lmnttoken */
206 SSVAL(q, 6, 0xffff); /* our lm20token */
207 q += 8;
208 }
209
210 /* RJS, 21-Feb-2000, we send a short reply if the request was short */
211
212 pull_ascii_fstring(mach_str, machine);
213
214 DEBUG(3,("process_logon_packet: GETDC request from %s at IP %s, \
215 reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n",
216 mach_str,inet_ntoa(p->ip), reply_name, lp_workgroup(),
217 QUERYFORPDC_R, (uint32)ntversion, (uint32)lmnttoken,
218 (uint32)lm20token ));
219
220 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
221
222 pull_ascii_fstring(getdc_str, getdc);
223 pull_ascii_nstring(source_name, dgram->source_name.name);
224
225 send_mailslot(True, getdc_str,
226 outbuf,PTR_DIFF(q,outbuf),
227 global_myname(), 0x0,
228 source_name,
229 dgram->source_name.name_type,
230 p->ip, *iface_ip(p->ip), p->port);
231 return;
232 }
233
234 case SAMLOGON:
235
236 {
237 fstring getdc_str;
238 nstring source_name;
239 char *q = buf + 2;
240 fstring asccomp;
241
242 q += 2;
243 unicomp = q;
244 uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp));
245 getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser));
246 q = skip_string(getdc,1);
247 q += 4; /* Account Control Bits - indicating username type */
248 domainsidsize = IVAL(q, 0);
249 q += 4;
250
251 DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d, len = %d\n", domainsidsize, len));
252
253 if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
254 q += domainsidsize;
255 q = ALIGN4(q, buf);
256 }
257
258 DEBUG(3,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %d\n", len, PTR_DIFF(q, buf) ));
259
260 if (len - PTR_DIFF(q, buf) > 8) {
261 /* with NT5 clients we can sometimes
262 get additional data - a length specificed string
263 containing the domain name, then 16 bytes of
264 data (no idea what it is) */
265 int dom_len = CVAL(q, 0);
266 q++;
267 if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
268 q += dom_len + 1;
269 }
270 q += 16;
271 }
272
273 ntversion = IVAL(q, 0);
274 lmnttoken = SVAL(q, 4);
275 lm20token = SVAL(q, 6);
276 q += 8;
277
278 DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d ntv %d\n", domainsidsize, ntversion));
279
280 /*
281 * we respond regadless of whether the machine is in our password
282 * database. If it isn't then we let smbd send an appropriate error.
283 * Let's ignore the SID.
284 */
285 pull_ucs2_pstring(ascuser, uniuser);
286 pull_ucs2_fstring(asccomp, unicomp);
287 DEBUG(3,("process_logon_packet: SAMLOGON user %s\n", ascuser));
288
289 fstrcpy(reply_name, "\\\\"); /* Here it wants \\LOGONSERVER. */
290 fstrcat(reply_name, my_name);
291
292 DEBUG(3,("process_logon_packet: SAMLOGON request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n",
293 asccomp,inet_ntoa(p->ip), ascuser, reply_name, lp_workgroup(),
294 SAMLOGON_R ,lmnttoken));
295
296 /* Construct reply. */
297
298 q = outbuf;
299 /* we want the simple version unless we are an ADS PDC..which means */
300 /* never, at least for now */
301 if ((ntversion < 11) || (SEC_ADS != lp_security()) || (ROLE_DOMAIN_PDC != lp_server_role())) {
302 if (SVAL(uniuser, 0) == 0) {
303 SSVAL(q, 0, SAMLOGON_UNK_R); /* user unknown */
304 } else {
305 SSVAL(q, 0, SAMLOGON_R);
306 }
307
308 q += 2;
309
310 q += dos_PutUniCode(q, reply_name,sizeof(pstring), True);
311 q += dos_PutUniCode(q, ascuser, sizeof(pstring), True);
312 q += dos_PutUniCode(q, lp_workgroup(),sizeof(pstring), True);
313 }
314 #ifdef HAVE_ADS
315 else {
316 struct uuid domain_guid;
317 UUID_FLAT flat_guid;
318 pstring domain;
319 pstring hostname;
320 char *component, *dc, *q1;
321 uint8 size;
322 char *q_orig = q;
323 int str_offset;
324
325 get_mydomname(domain);
326 get_myname(hostname);
327
328 if (SVAL(uniuser, 0) == 0) {
329 SIVAL(q, 0, SAMLOGON_AD_UNK_R); /* user unknown */
330 } else {
331 SIVAL(q, 0, SAMLOGON_AD_R);
332 }
333 q += 4;
334
335 SIVAL(q, 0, ADS_PDC|ADS_GC|ADS_LDAP|ADS_DS|
336 ADS_KDC|ADS_TIMESERV|ADS_CLOSEST|ADS_WRITABLE);
337 q += 4;
338
339 /* Push Domain GUID */
340 if (False == secrets_fetch_domain_guid(domain, &domain_guid)) {
341 DEBUG(2, ("Could not fetch DomainGUID for %s\n", domain));
342 return;
343 }
344
345 smb_uuid_pack(domain_guid, &flat_guid);
346 memcpy(q, &flat_guid.info, UUID_FLAT_SIZE);
347 q += UUID_FLAT_SIZE;
348
349 /* Forest */
350 str_offset = q - q_orig;
351 dc = domain;
352 q1 = q;
353 while ((component = strtok(dc, "."))) {
354 dc = NULL;
355 size = push_ascii(&q[1], component, -1, 0);
356 SCVAL(q, 0, size);
357 q += (size + 1);
358 }
359
360 /* Unk0 */
361 SCVAL(q, 0, 0);
362 q++;
363
364 /* Domain */
365 SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
366 SCVAL(q, 1, str_offset & 0xFF);
367 q += 2;
368
369 /* Hostname */
370 size = push_ascii(&q[1], hostname, -1, 0);
371 SCVAL(q, 0, size);
372 q += (size + 1);
373 SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
374 SCVAL(q, 1, str_offset & 0xFF);
375 q += 2;
376
377 /* NETBIOS of domain */
378 size = push_ascii(&q[1], lp_workgroup(), -1, STR_UPPER);
379 SCVAL(q, 0, size);
380 q += (size + 1);
381
382 /* Unk1 */
383 SCVAL(q, 0, 0);
384 q++;
385
386 /* NETBIOS of hostname */
387 size = push_ascii(&q[1], my_name, -1, 0);
388 SCVAL(q, 0, size);
389 q += (size + 1);
390
391 /* Unk2 */
392 SCVAL(q, 0, 0);
393 q++;
394
395 /* User name */
396 if (SVAL(uniuser, 0) != 0) {
397 size = push_ascii(&q[1], ascuser, -1, 0);
398 SCVAL(q, 0, size);
399 q += (size + 1);
400 }
401
402 q_orig = q;
403 /* Site name */
404 size = push_ascii(&q[1], "Default-First-Site-Name", -1, 0);
405 SCVAL(q, 0, size);
406 q += (size + 1);
407
408 /* Site name (2) */
409 str_offset = q - q_orig;
410 SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
411 SCVAL(q, 1, str_offset & 0xFF);
412 q += 2;
413
414 SCVAL(q, 0, PTR_DIFF(q,q1));
415 SCVAL(q, 1, 0x10); /* unknown */
416
417 SIVAL(q, 0, 0x00000002);
418 q += 4; /* unknown */
419 SIVAL(q, 0, (iface_ip(p->ip))->s_addr);
420 q += 4;
421 SIVAL(q, 0, 0x00000000);
422 q += 4; /* unknown */
423 SIVAL(q, 0, 0x00000000);
424 q += 4; /* unknown */
425 }
426 #endif
427
428 /* tell the client what version we are */
429 SIVAL(q, 0, ((ntversion < 11) || (SEC_ADS != lp_security())) ? 1 : 13);
430 /* our ntversion */
431 SSVAL(q, 4, 0xffff); /* our lmnttoken */
432 SSVAL(q, 6, 0xffff); /* our lm20token */
433 q += 8;
434
435 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
436
437 pull_ascii_fstring(getdc_str, getdc);
438 pull_ascii_nstring(source_name, dgram->source_name.name);
439
440 send_mailslot(True, getdc,
441 outbuf,PTR_DIFF(q,outbuf),
442 global_myname(), 0x0,
443 dgram->source_name.name,
444 dgram->source_name.name_type,
445 p->ip, *iface_ip(p->ip), p->port);
446 break;
447 }
448
449 /* Announce change to UAS or SAM. Send by the domain controller when a
450 replication event is required. */
451
452 case SAM_UAS_CHANGE:
453 {
454 struct sam_database_info *db_info;
455 char *q = buf + 2;
456 int i, db_count;
457 uint32 low_serial;
458
459 /* Header */
460
461 low_serial = IVAL(q, 0); q += 4; /* Low serial number */
462
463 q += 4; /* Date/time */
464 q += 4; /* Pulse */
465 q += 4; /* Random */
466
467 /* Domain info */
468
469 q = skip_string(q, 1); /* PDC name */
470 q = skip_string(q, 1); /* Domain name */
471 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode PDC name */
472 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode domain name */
473
474 /* Database info */
475
476 db_count = SVAL(q, 0); q += 2;
477
478 db_info = (struct sam_database_info *)
479 malloc(sizeof(struct sam_database_info) * db_count);
480
481 if (db_info == NULL) {
482 DEBUG(3, ("out of memory allocating info for %d databases\n", db_count));
483 return;
484 }
485
486 for (i = 0; i < db_count; i++) {
487 db_info[i].index = IVAL(q, 0);
488 db_info[i].serial_lo = IVAL(q, 4);
489 db_info[i].serial_hi = IVAL(q, 8);
490 db_info[i].date_lo = IVAL(q, 12);
491 db_info[i].date_hi = IVAL(q, 16);
492 q += 20;
493 }
494
495 /* Domain SID */
496
497 #if 0
498 /* We must range check this. */
499 q += IVAL(q, 0) + 4; /* 4 byte length plus data */
500
501 q += 2; /* Alignment? */
502
503 /* Misc other info */
504
505 q += 4; /* NT version (0x1) */
506 q += 2; /* LMNT token (0xff) */
507 q += 2; /* LM20 token (0xff) */
508 #endif
509
510 SAFE_FREE(db_info); /* Not sure whether we need to do anything useful with these */
511
512 /* Send message to smbd */
513
514 send_repl_message(low_serial);
515 break;
516 }
517
518 default:
519 DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code));
520 return;
521 }
522 }
reg import