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 1994-1998
7 Copyright (C) Jim McDonough 2002
8 Copyright (C) Anthony Liguori 2002
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 extern pstring global_myname;
31 extern fstring global_myworkgroup;
33 struct sam_database_info {
35 uint32 serial_lo, serial_hi;
36 uint32 date_lo, date_hi;
39 /****************************************************************************
40 Send a message to smbd to do a sam delta sync
41 **************************************************************************/
42 static void send_repl_message(uint32 low_serial)
46 tdb = tdb_open_log(lock_path("connections.tdb"), 0,
47 TDB_DEFAULT, O_RDONLY, 0);
50 DEBUG(3, ("send_repl_message(): failed to open connections "
55 DEBUG(3, ("sending replication message, serial = 0x%04x\n",
58 message_send_all(tdb, MSG_SMB_SAM_REPL, &low_serial,
59 sizeof(low_serial), False, NULL);
64 /****************************************************************************
65 Process a domain logon packet
66 **************************************************************************/
68 void process_logon_packet(struct packet_struct *p,char *buf,int len,
71 struct dgram_packet *dgram = &p->packet.dgram;
81 BOOL short_request = False;
83 char *uniuser; /* Unicode user name. */
85 char *unicomp; /* Unicode computer name. */
87 memset(outbuf, 0, sizeof(outbuf));
89 if (!lp_domain_logons())
91 DEBUG(3,("process_logon_packet: Logon packet received from IP %s and domain \
92 logons are not enabled.\n", inet_ntoa(p->ip) ));
96 pstrcpy(my_name, global_myname);
100 DEBUG(1,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code));
108 char *user = skip_string(machine,1);
110 getdc = skip_string(user,1);
111 q = skip_string(getdc,1);
114 fstrcpy(reply_name,my_name);
116 DEBUG(3,("process_logon_packet: Domain login request from %s at IP %s user=%s token=%x\n",
117 machine,inet_ntoa(p->ip),user,token));
123 fstrcpy(reply_name, "\\\\");
124 fstrcat(reply_name, my_name);
125 fstrcpy(q, reply_name); q = skip_string(q, 1); /* PDC name */
130 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
132 send_mailslot(True, getdc,
133 outbuf,PTR_DIFF(q,outbuf),
136 dgram->source_name.name_type,
137 p->ip, *iface_ip(p->ip), p->port);
146 if (!lp_domain_master())
148 /* We're not Primary Domain Controller -- ignore this */
152 getdc = skip_string(machine,1);
153 q = skip_string(getdc,1);
156 /* at this point we can work out if this is a W9X or NT style
157 request. Experiments show that the difference is wether the
158 packet ends here. For a W9X request we now end with a pair of
159 bytes (usually 0xFE 0xFF) whereas with NT we have two further
160 strings - the following is a simple way of detecting this */
161 if (len - PTR_DIFF(q, buf) <= 3) {
162 short_request = True;
166 /* A full length (NT style) request */
167 q = skip_unibuf(unicomp, PTR_DIFF(buf + len, unicomp));
169 if (len - PTR_DIFF(q, buf) > 8) {
170 /* with NT5 clients we can sometimes
171 get additional data - a length specificed string
172 containing the domain name, then 16 bytes of
173 data (no idea what it is) */
174 int dom_len = CVAL(q, 0);
181 ntversion = IVAL(q, 0);
182 lmnttoken = SVAL(q, 4);
183 lm20token = SVAL(q, 6);
186 /* Construct reply. */
188 SSVAL(q, 0, QUERYFORPDC_R);
191 fstrcpy(reply_name,my_name);
192 fstrcpy(q, reply_name);
193 q = skip_string(q, 1); /* PDC name */
195 /* PDC and domain name */
196 if (!short_request) /* Make a full reply */
198 q = ALIGN2(q, outbuf);
200 q += dos_PutUniCode(q, my_name, sizeof(pstring), True); /* PDC name */
201 q += dos_PutUniCode(q, global_myworkgroup,sizeof(pstring), True); /* Domain name*/
202 SIVAL(q, 0, 1); /* our nt version */
203 SSVAL(q, 4, 0xffff); /* our lmnttoken */
204 SSVAL(q, 6, 0xffff); /* our lm20token */
208 /* RJS, 21-Feb-2000, we send a short reply if the request was short */
210 DEBUG(3,("process_logon_packet: GETDC request from %s at IP %s, \
211 reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n",
212 machine,inet_ntoa(p->ip), reply_name, global_myworkgroup,
213 QUERYFORPDC_R, (uint32)ntversion, (uint32)lmnttoken,
214 (uint32)lm20token ));
216 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
218 send_mailslot(True, getdc,
219 outbuf,PTR_DIFF(q,outbuf),
221 dgram->source_name.name,
222 dgram->source_name.name_type,
223 p->ip, *iface_ip(p->ip), p->port);
234 uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp));
235 getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser));
236 q = skip_string(getdc,1);
237 q += 4; /* Account Control Bits - indicating username type */
238 domainsidsize = IVAL(q, 0);
241 DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d, len = %d\n", domainsidsize, len));
243 if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
248 DEBUG(3,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %d\n", len, PTR_DIFF(q, buf) ));
250 if (len - PTR_DIFF(q, buf) > 8) {
251 /* with NT5 clients we can sometimes
252 get additional data - a length specificed string
253 containing the domain name, then 16 bytes of
254 data (no idea what it is) */
255 int dom_len = CVAL(q, 0);
257 if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
263 ntversion = IVAL(q, 0);
264 lmnttoken = SVAL(q, 4);
265 lm20token = SVAL(q, 6);
268 DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d ntv %d\n", domainsidsize, ntversion));
271 * we respond regadless of whether the machine is in our password
272 * database. If it isn't then we let smbd send an appropriate error.
273 * Let's ignore the SID.
275 pull_ucs2_pstring(ascuser, uniuser);
276 pull_ucs2_fstring(asccomp, unicomp);
277 DEBUG(3,("process_logon_packet: SAMLOGON user %s\n", ascuser));
279 fstrcpy(reply_name,"\\\\"); /* Here it wants \\LOGONSERVER. */
280 fstrcpy(reply_name+2,my_name);
282 DEBUG(3,("process_logon_packet: SAMLOGON request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n",
283 asccomp,inet_ntoa(p->ip), ascuser, reply_name, global_myworkgroup,
284 SAMLOGON_R ,lmnttoken));
286 /* Construct reply. */
289 /* we want the simple version unless we are an ADS PDC..which means */
290 /* never, at least for now */
291 if ((ntversion < 11) || (SEC_ADS != lp_security()) || (ROLE_DOMAIN_PDC != lp_server_role())) {
292 if (SVAL(uniuser, 0) == 0) {
293 SSVAL(q, 0, SAMLOGON_UNK_R); /* user unknown */
295 SSVAL(q, 0, SAMLOGON_R);
300 q += dos_PutUniCode(q, reply_name,sizeof(pstring), True);
301 q += dos_PutUniCode(q, ascuser, sizeof(pstring), True);
302 q += dos_PutUniCode(q, global_myworkgroup,sizeof(pstring), True);
308 char *component, *dc, *q1;
311 safe_strcpy(domain, lp_realm(), sizeof(domain));
313 if (SVAL(uniuser, 0) == 0) {
314 SSVAL(q, 0, SAMLOGON_AD_UNK_R); /* user unknown */
316 SSVAL(q, 0, SAMLOGON_AD_R);
322 SIVAL(q, 0, ADS_PDC|ADS_GC|ADS_LDAP|ADS_DS|
323 ADS_KDC|ADS_TIMESERV|ADS_CLOSEST|ADS_WRITABLE);
326 /* Push Domain GUID */
327 if (False == secrets_fetch_domain_guid(domain, &domain_guid)) {
328 DEBUG(2, ("Could not fetch DomainGUID for %s\n", domain));
331 memcpy(q, &domain_guid, sizeof(domain_guid));
332 q += sizeof(domain_guid);
334 /* Push domain components */
337 while ((component = strtok(dc, "."))) {
339 size = push_ascii(&q[1], component, -1, 0);
344 SSVAL(q, 0, 0x18c0); /* not sure what this is for, but */
345 q += 2; /* it must follow the domain name. */
347 /* Push dns host name */
348 size = push_ascii(&q[1], global_myname, -1, 0);
351 SSVAL(q, 0, 0x18c0); /* not sure what this is for, but */
352 q += 2; /* it must follow the domain name. */
354 /* Push NETBIOS of domain */
355 size = push_ascii(&q[1], domain, -1, STR_UPPER);
358 SCVAL(q, 0, 0); q++; /* is this a null terminator or empty field */
359 /* null terminator would not be needed because size is included */
361 /* Push NETBIOS of hostname */
362 size = push_ascii(&q[1], my_name, -1, 0);
365 SCVAL(q, 0, 0); q++; /* null terminator or empty field? */
367 /* Push user account */
368 size = push_ascii(&q[1], ascuser, -1, 0);
372 /* Push 'Default-First-Site-Name' */
373 size = push_ascii(&q[1], "Default-First-Site-Name", -1, 0);
377 SSVAL(q, 0, 0xc000); /* unknown */
378 SCVAL(q, 2, PTR_DIFF(q,q1));
379 SCVAL(q, 3, 0x10); /* unknown */
382 SIVAL(q, 0, 0x00000002); q += 4; /* unknown */
383 SIVAL(q, 0, (iface_ip(p->ip))->s_addr); q += 4;
384 SIVAL(q, 0, 0x00000000); q += 4; /* unknown */
385 SIVAL(q, 0, 0x00000000); q += 4; /* unknown */
389 /* tell the client what version we are */
390 SIVAL(q, 0, ((ntversion < 11) || (SEC_ADS != lp_security())) ? 1 : 13);
392 SSVAL(q, 4, 0xffff); /* our lmnttoken */
393 SSVAL(q, 6, 0xffff); /* our lm20token */
396 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
398 send_mailslot(True, getdc,
399 outbuf,PTR_DIFF(q,outbuf),
401 dgram->source_name.name,
402 dgram->source_name.name_type,
403 p->ip, *iface_ip(p->ip), p->port);
407 /* Announce change to UAS or SAM. Send by the domain controller when a
408 replication event is required. */
410 case SAM_UAS_CHANGE: {
411 struct sam_database_info *db_info;
418 low_serial = IVAL(q, 0); q += 4; /* Low serial number */
420 q += 4; /* Date/time */
426 q = skip_string(q, 1); /* PDC name */
427 q = skip_string(q, 1); /* Domain name */
428 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode PDC name */
429 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode domain name */
433 db_count = SVAL(q, 0); q += 2;
435 db_info = (struct sam_database_info *)
436 malloc(sizeof(struct sam_database_info) * db_count);
438 if (db_info == NULL) {
439 DEBUG(3, ("out of memory allocating info for %d databases\n",
444 for (i = 0; i < db_count; i++) {
445 db_info[i].index = IVAL(q, 0);
446 db_info[i].serial_lo = IVAL(q, 4);
447 db_info[i].serial_hi = IVAL(q, 8);
448 db_info[i].date_lo = IVAL(q, 12);
449 db_info[i].date_hi = IVAL(q, 16);
455 q += IVAL(q, 0) + 4; /* 4 byte length plus data */
457 q += 2; /* Alignment? */
459 /* Misc other info */
461 q += 4; /* NT version (0x1) */
462 q += 2; /* LMNT token (0xff) */
463 q += 2; /* LM20 token (0xff) */
465 SAFE_FREE(db_info); /* Not sure whether we need to do anything
468 /* Send message to smbd */
470 send_repl_message(low_serial);
477 DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code));