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
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.
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.
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.
29 struct sam_database_info {
31 uint32 serial_lo, serial_hi;
32 uint32 date_lo, date_hi;
35 /****************************************************************************
36 Send a message to smbd to do a sam delta sync
37 **************************************************************************/
39 static void send_repl_message(uint32 low_serial)
43 tdb = tdb_open_log(lock_path("connections.tdb"), 0,
44 TDB_DEFAULT, O_RDONLY, 0);
47 DEBUG(3, ("send_repl_message(): failed to open connections "
52 DEBUG(3, ("sending replication message, serial = 0x%04x\n",
55 message_send_all(tdb, MSG_SMB_SAM_REPL, &low_serial,
56 sizeof(low_serial), False, NULL);
61 /****************************************************************************
62 Process a domain logon packet
63 **************************************************************************/
65 void process_logon_packet(struct packet_struct *p, char *buf,int len,
68 struct dgram_packet *dgram = &p->packet.dgram;
78 BOOL short_request = False;
80 char *uniuser; /* Unicode user name. */
82 char *unicomp; /* Unicode computer name. */
84 memset(outbuf, 0, sizeof(outbuf));
86 if (!lp_domain_logons()) {
87 DEBUG(5,("process_logon_packet: Logon packet received from IP %s and domain \
88 logons are not enabled.\n", inet_ntoa(p->ip) ));
92 pstrcpy(my_name, global_myname());
95 DEBUG(4,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code));
100 fstring mach_str, user_str, getdc_str;
103 char *user = skip_string(machine,1);
105 getdc = skip_string(user,1);
106 q = skip_string(getdc,1);
109 fstrcpy(reply_name,my_name);
111 pull_ascii_fstring(mach_str, machine);
112 pull_ascii_fstring(user_str, user);
113 pull_ascii_fstring(getdc_str, getdc);
115 DEBUG(5,("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));
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 */
130 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
132 send_mailslot(True, getdc_str,
133 outbuf,PTR_DIFF(q,outbuf),
134 global_myname(), 0x0,
136 dgram->source_name.name_type,
137 p->ip, *iface_ip(p->ip), p->port);
143 fstring mach_str, getdc_str;
148 if (!lp_domain_master()) {
149 /* We're not Primary Domain Controller -- ignore this */
153 getdc = skip_string(machine,1);
154 q = skip_string(getdc,1);
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 */
163 if (len - PTR_DIFF(q, buf) <= 3) {
164 short_request = True;
168 /* A full length (NT style) request */
169 q = skip_unibuf(unicomp, PTR_DIFF(buf + len, unicomp));
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);
183 ntversion = IVAL(q, 0);
184 lmnttoken = SVAL(q, 4);
185 lm20token = SVAL(q, 6);
188 /* Construct reply. */
190 SSVAL(q, 0, QUERYFORPDC_R);
193 fstrcpy(reply_name,my_name);
194 push_ascii_fstring(q, reply_name);
195 q = skip_string(q, 1); /* PDC name */
197 /* PDC and domain name */
198 if (!short_request) {
199 /* Make a full reply */
200 q = ALIGN2(q, outbuf);
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 */
210 /* RJS, 21-Feb-2000, we send a short reply if the request was short */
212 pull_ascii_fstring(mach_str, machine);
214 DEBUG(5,("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 ));
220 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
222 pull_ascii_fstring(getdc_str, getdc);
223 pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
225 send_mailslot(True, getdc_str,
226 outbuf,PTR_DIFF(q,outbuf),
227 global_myname(), 0x0,
229 dgram->source_name.name_type,
230 p->ip, *iface_ip(p->ip), p->port);
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);
251 DEBUG(5,("process_logon_packet: SAMLOGON sidsize %d, len = %d\n", domainsidsize, len));
253 if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
258 DEBUG(5,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %ld\n", len, (unsigned long)PTR_DIFF(q, buf) ));
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);
267 if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
273 ntversion = IVAL(q, 0);
274 lmnttoken = SVAL(q, 4);
275 lm20token = SVAL(q, 6);
278 DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d ntv %d\n", domainsidsize, ntversion));
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.
285 pull_ucs2_pstring(ascuser, uniuser);
286 pull_ucs2_fstring(asccomp, unicomp);
287 DEBUG(5,("process_logon_packet: SAMLOGON user %s\n", ascuser));
289 fstrcpy(reply_name, "\\\\"); /* Here it wants \\LOGONSERVER. */
290 fstrcat(reply_name, my_name);
292 DEBUG(5,("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));
296 /* Construct reply. */
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 */
305 SSVAL(q, 0, SAMLOGON_R);
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);
319 char *component, *dc, *q1;
324 get_mydnsdomname(domain);
325 get_myname(hostname);
327 if (SVAL(uniuser, 0) == 0) {
328 SIVAL(q, 0, SAMLOGON_AD_UNK_R); /* user unknown */
330 SIVAL(q, 0, SAMLOGON_AD_R);
334 SIVAL(q, 0, ADS_PDC|ADS_GC|ADS_LDAP|ADS_DS|
335 ADS_KDC|ADS_TIMESERV|ADS_CLOSEST|ADS_WRITABLE);
338 /* Push Domain GUID */
339 if (False == secrets_fetch_domain_guid(domain, &domain_guid)) {
340 DEBUG(2, ("Could not fetch DomainGUID for %s\n", domain));
343 memcpy(q, &domain_guid, sizeof(domain_guid));
344 q += sizeof(domain_guid);
347 str_offset = q - q_orig;
350 while ((component = strtok(dc, "."))) {
352 size = push_ascii(&q[1], component, -1, 0);
362 SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
363 SCVAL(q, 1, str_offset & 0xFF);
367 size = push_ascii(&q[1], hostname, -1, 0);
370 SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
371 SCVAL(q, 1, str_offset & 0xFF);
374 /* NETBIOS of domain */
375 size = push_ascii(&q[1], lp_workgroup(), -1, STR_UPPER);
383 /* NETBIOS of hostname */
384 size = push_ascii(&q[1], my_name, -1, 0);
393 if (SVAL(uniuser, 0) != 0) {
394 size = push_ascii(&q[1], ascuser, -1, 0);
401 size = push_ascii(&q[1], "Default-First-Site-Name", -1, 0);
406 str_offset = q - q_orig;
407 SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
408 SCVAL(q, 1, str_offset & 0xFF);
411 SCVAL(q, 0, PTR_DIFF(q,q1));
412 SCVAL(q, 1, 0x10); /* unknown */
414 SIVAL(q, 0, 0x00000002);
415 q += 4; /* unknown */
416 SIVAL(q, 0, (iface_ip(p->ip))->s_addr);
418 SIVAL(q, 0, 0x00000000);
419 q += 4; /* unknown */
420 SIVAL(q, 0, 0x00000000);
421 q += 4; /* unknown */
425 /* tell the client what version we are */
426 SIVAL(q, 0, ((ntversion < 11) || (SEC_ADS != lp_security())) ? 1 : 13);
428 SSVAL(q, 4, 0xffff); /* our lmnttoken */
429 SSVAL(q, 6, 0xffff); /* our lm20token */
432 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
434 pull_ascii_fstring(getdc_str, getdc);
435 pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
437 send_mailslot(True, getdc,
438 outbuf,PTR_DIFF(q,outbuf),
439 global_myname(), 0x0,
441 dgram->source_name.name_type,
442 p->ip, *iface_ip(p->ip), p->port);
446 /* Announce change to UAS or SAM. Send by the domain controller when a
447 replication event is required. */
451 struct sam_database_info *db_info;
458 low_serial = IVAL(q, 0); q += 4; /* Low serial number */
460 q += 4; /* Date/time */
466 q = skip_string(q, 1); /* PDC name */
467 q = skip_string(q, 1); /* Domain name */
468 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode PDC name */
469 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode domain name */
473 db_count = SVAL(q, 0); q += 2;
475 db_info = (struct sam_database_info *)
476 malloc(sizeof(struct sam_database_info) * db_count);
478 if (db_info == NULL) {
479 DEBUG(3, ("out of memory allocating info for %d databases\n", db_count));
483 for (i = 0; i < db_count; i++) {
484 db_info[i].index = IVAL(q, 0);
485 db_info[i].serial_lo = IVAL(q, 4);
486 db_info[i].serial_hi = IVAL(q, 8);
487 db_info[i].date_lo = IVAL(q, 12);
488 db_info[i].date_hi = IVAL(q, 16);
495 /* We must range check this. */
496 q += IVAL(q, 0) + 4; /* 4 byte length plus data */
498 q += 2; /* Alignment? */
500 /* Misc other info */
502 q += 4; /* NT version (0x1) */
503 q += 2; /* LMNT token (0xff) */
504 q += 2; /* LM20 token (0xff) */
507 SAFE_FREE(db_info); /* Not sure whether we need to do anything useful with these */
509 /* Send message to smbd */
511 send_repl_message(low_serial);
516 DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code));