2 Unix SMB/Netbios implementation.
4 NBT netbios routines and daemon - version 2
5 Copyright (C) Andrew Tridgell 1994-1998
6 Copyright (C) Luke Kenneth Casson Leighton 1994-1998
7 Copyright (C) Jeremy Allison 1994-1998
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 extern int DEBUGLEVEL;
31 extern pstring global_myname;
32 extern fstring global_myworkgroup;
34 struct sam_database_info {
36 uint32 serial_lo, serial_hi;
37 uint32 date_lo, date_hi;
40 /****************************************************************************
41 Send a message to smbd to do a sam delta sync
42 **************************************************************************/
43 static void send_repl_message(uint32 low_serial)
47 tdb = tdb_open_log(lock_path("connections.tdb"), 0,
48 TDB_DEFAULT, O_RDONLY, 0);
51 DEBUG(3, ("send_repl_message(): failed to open connections "
56 DEBUG(3, ("sending replication message, serial = 0x%04x\n",
59 message_send_all(tdb, MSG_SMB_SAM_REPL, &low_serial,
60 sizeof(low_serial), False);
65 /****************************************************************************
66 Process a domain logon packet
67 **************************************************************************/
69 void process_logon_packet(struct packet_struct *p,char *buf,int len,
72 struct dgram_packet *dgram = &p->packet.dgram;
82 BOOL short_request = False;
84 char *uniuser; /* Unicode user name. */
86 char *unicomp; /* Unicode computer name. */
88 memset(outbuf, 0, sizeof(outbuf));
90 if (!lp_domain_logons())
92 DEBUG(3,("process_logon_packet: Logon packet received from IP %s and domain \
93 logons are not enabled.\n", inet_ntoa(p->ip) ));
97 pstrcpy(my_name, global_myname);
101 DEBUG(1,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code));
109 char *user = skip_string(machine,1);
111 getdc = skip_string(user,1);
112 q = skip_string(getdc,1);
115 fstrcpy(reply_name,my_name);
117 DEBUG(3,("process_logon_packet: Domain login request from %s at IP %s user=%s token=%x\n",
118 machine,inet_ntoa(p->ip),user,token));
124 fstrcpy(reply_name, "\\\\");
125 fstrcat(reply_name, my_name);
126 fstrcpy(q, reply_name); q = skip_string(q, 1); /* PDC name */
131 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
133 send_mailslot(True, getdc,
134 outbuf,PTR_DIFF(q,outbuf),
137 dgram->source_name.name_type,
138 p->ip, *iface_ip(p->ip), p->port);
147 getdc = skip_string(machine,1);
148 q = skip_string(getdc,1);
151 /* at this point we can work out if this is a W9X or NT style
152 request. Experiments show that the difference is wether the
153 packet ends here. For a W9X request we now end with a pair of
154 bytes (usually 0xFE 0xFF) whereas with NT we have two further
155 strings - the following is a simple way of detecting this */
156 if (len - PTR_DIFF(q, buf) <= 3) {
157 short_request = True;
161 /* A full length (NT style) request */
162 q = skip_unibuf(unicomp, PTR_DIFF(buf + len, unicomp));
164 if (len - PTR_DIFF(q, buf) > 8) {
165 /* with NT5 clients we can sometimes
166 get additional data - a length specificed string
167 containing the domain name, then 16 bytes of
168 data (no idea what it is) */
169 int dom_len = CVAL(q, 0);
176 ntversion = IVAL(q, 0);
177 lmnttoken = SVAL(q, 4);
178 lm20token = SVAL(q, 6);
181 /* Construct reply. */
183 SSVAL(q, 0, QUERYFORPDC_R);
186 fstrcpy(reply_name,my_name);
187 fstrcpy(q, reply_name);
188 q = skip_string(q, 1); /* PDC name */
190 /* PDC and domain name */
191 if (!short_request) /* Make a full reply */
193 q = ALIGN2(q, outbuf);
195 q += dos_PutUniCode(q, my_name, sizeof(pstring), True); /* PDC name */
196 q += dos_PutUniCode(q, global_myworkgroup,sizeof(pstring), True); /* Domain name*/
197 SIVAL(q, 0, 1); /* our nt version */
198 SSVAL(q, 4, 0xffff); /* our lmnttoken */
199 SSVAL(q, 6, 0xffff); /* our lm20token */
203 /* RJS, 21-Feb-2000, we send a short reply if the request was short */
205 DEBUG(3,("process_logon_packet: GETDC request from %s at IP %s, \
206 reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n",
207 machine,inet_ntoa(p->ip), reply_name, global_myworkgroup,
208 QUERYFORPDC_R, (uint32)ntversion, (uint32)lmnttoken,
209 (uint32)lm20token ));
211 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
213 send_mailslot(True, getdc,
214 outbuf,PTR_DIFF(q,outbuf),
216 dgram->source_name.name,
217 dgram->source_name.name_type,
218 p->ip, *iface_ip(p->ip), p->port);
229 uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp));
230 getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser));
231 q = skip_string(getdc,1);
232 q += 4; /* Account Control Bits - indicating username type */
233 domainsidsize = IVAL(q, 0);
236 DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d, len = %d\n", domainsidsize, len));
238 if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
243 DEBUG(3,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %d\n", len, PTR_DIFF(q, buf) ));
245 if (len - PTR_DIFF(q, buf) > 8) {
246 /* with NT5 clients we can sometimes
247 get additional data - a length specificed string
248 containing the domain name, then 16 bytes of
249 data (no idea what it is) */
250 int dom_len = CVAL(q, 0);
252 if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
258 ntversion = IVAL(q, 0);
259 lmnttoken = SVAL(q, 4);
260 lm20token = SVAL(q, 6);
263 DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d ntv %d\n", domainsidsize, ntversion));
266 * we respond regadless of whether the machine is in our password
267 * database. If it isn't then we let smbd send an appropriate error.
268 * Let's ignore the SID.
270 pull_ucs2_pstring(ascuser, uniuser);
271 pull_ucs2_fstring(asccomp, unicomp);
272 DEBUG(3,("process_logon_packet: SAMLOGON user %s\n", ascuser));
274 fstrcpy(reply_name,"\\\\"); /* Here it wants \\LOGONSERVER. */
275 fstrcpy(reply_name+2,my_name);
277 DEBUG(3,("process_logon_packet: SAMLOGON request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n",
278 asccomp,inet_ntoa(p->ip), ascuser, reply_name, global_myworkgroup,
279 SAMLOGON_R ,lmnttoken));
281 /* Construct reply. */
284 if (SVAL(uniuser, 0) == 0) {
285 SSVAL(q, 0, SAMLOGON_UNK_R); /* user unknown */
287 SSVAL(q, 0, SAMLOGON_R);
291 q += dos_PutUniCode(q, reply_name,sizeof(pstring), True);
292 q += dos_PutUniCode(q, ascuser, sizeof(pstring), True);
293 q += dos_PutUniCode(q, global_myworkgroup,sizeof(pstring), True);
295 /* tell the client what version we are */
296 SIVAL(q, 0, 1); /* our ntversion */
297 SSVAL(q, 4, 0xffff); /* our lmnttoken */
298 SSVAL(q, 6, 0xffff); /* our lm20token */
301 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
303 send_mailslot(True, getdc,
304 outbuf,PTR_DIFF(q,outbuf),
306 dgram->source_name.name,
307 dgram->source_name.name_type,
308 p->ip, *iface_ip(p->ip), p->port);
312 /* Announce change to UAS or SAM. Send by the domain controller when a
313 replication event is required. */
315 case SAM_UAS_CHANGE: {
316 struct sam_database_info *db_info;
323 low_serial = IVAL(q, 0); q += 4; /* Low serial number */
325 q += 4; /* Date/time */
331 q = skip_string(q, 1); /* PDC name */
332 q = skip_string(q, 1); /* Domain name */
333 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode PDC name */
334 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode domain name */
338 db_count = SVAL(q, 0); q += 2;
340 db_info = (struct sam_database_info *)
341 malloc(sizeof(struct sam_database_info) * db_count);
343 if (db_info == NULL) {
344 DEBUG(3, ("out of memory allocating info for %d databases\n",
349 for (i = 0; i < db_count; i++) {
350 db_info[i].index = IVAL(q, 0);
351 db_info[i].serial_lo = IVAL(q, 4);
352 db_info[i].serial_hi = IVAL(q, 8);
353 db_info[i].date_lo = IVAL(q, 12);
354 db_info[i].date_hi = IVAL(q, 16);
360 q += IVAL(q, 0) + 4; /* 4 byte length plus data */
362 q += 2; /* Alignment? */
364 /* Misc other info */
366 q += 4; /* NT version (0x1) */
367 q += 2; /* LMNT token (0xff) */
368 q += 2; /* LM20 token (0xff) */
370 SAFE_FREE(db_info); /* Not sure whether we need to do anything
373 /* Send message to smbd */
375 send_repl_message(low_serial);
382 DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code));