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
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 extern pstring global_myname;
29 extern fstring global_myworkgroup;
31 struct sam_database_info {
33 uint32 serial_lo, serial_hi;
34 uint32 date_lo, date_hi;
37 /****************************************************************************
38 Send a message to smbd to do a sam delta sync
39 **************************************************************************/
40 static void send_repl_message(uint32 low_serial)
44 tdb = tdb_open_log(lock_path("connections.tdb"), 0,
45 TDB_DEFAULT, O_RDONLY, 0);
48 DEBUG(3, ("send_repl_message(): failed to open connections "
53 DEBUG(3, ("sending replication message, serial = 0x%04x\n",
56 message_send_all(tdb, MSG_SMB_SAM_REPL, &low_serial,
57 sizeof(low_serial), False, NULL);
62 /****************************************************************************
63 Process a domain logon packet
64 **************************************************************************/
66 void process_logon_packet(struct packet_struct *p,char *buf,int len,
69 struct dgram_packet *dgram = &p->packet.dgram;
79 BOOL short_request = False;
81 char *uniuser; /* Unicode user name. */
83 char *unicomp; /* Unicode computer name. */
85 memset(outbuf, 0, sizeof(outbuf));
87 if (!lp_domain_logons())
89 DEBUG(3,("process_logon_packet: Logon packet received from IP %s and domain \
90 logons are not enabled.\n", inet_ntoa(p->ip) ));
94 pstrcpy(my_name, global_myname);
98 DEBUG(1,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code));
106 char *user = skip_string(machine,1);
108 getdc = skip_string(user,1);
109 q = skip_string(getdc,1);
112 fstrcpy(reply_name,my_name);
114 DEBUG(3,("process_logon_packet: Domain login request from %s at IP %s user=%s token=%x\n",
115 machine,inet_ntoa(p->ip),user,token));
121 fstrcpy(reply_name, "\\\\");
122 fstrcat(reply_name, my_name);
123 fstrcpy(q, reply_name); q = skip_string(q, 1); /* PDC name */
128 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
130 send_mailslot(True, getdc,
131 outbuf,PTR_DIFF(q,outbuf),
134 dgram->source_name.name_type,
135 p->ip, *iface_ip(p->ip), p->port);
144 if (!lp_domain_master())
146 /* We're not Primary Domain Controller -- ignore this */
150 getdc = skip_string(machine,1);
151 q = skip_string(getdc,1);
154 /* at this point we can work out if this is a W9X or NT style
155 request. Experiments show that the difference is wether the
156 packet ends here. For a W9X request we now end with a pair of
157 bytes (usually 0xFE 0xFF) whereas with NT we have two further
158 strings - the following is a simple way of detecting this */
159 if (len - PTR_DIFF(q, buf) <= 3) {
160 short_request = True;
164 /* A full length (NT style) request */
165 q = skip_unibuf(unicomp, PTR_DIFF(buf + len, unicomp));
167 if (len - PTR_DIFF(q, buf) > 8) {
168 /* with NT5 clients we can sometimes
169 get additional data - a length specificed string
170 containing the domain name, then 16 bytes of
171 data (no idea what it is) */
172 int dom_len = CVAL(q, 0);
179 ntversion = IVAL(q, 0);
180 lmnttoken = SVAL(q, 4);
181 lm20token = SVAL(q, 6);
184 /* Construct reply. */
186 SSVAL(q, 0, QUERYFORPDC_R);
189 fstrcpy(reply_name,my_name);
190 fstrcpy(q, reply_name);
191 q = skip_string(q, 1); /* PDC name */
193 /* PDC and domain name */
194 if (!short_request) /* Make a full reply */
196 q = ALIGN2(q, outbuf);
198 q += dos_PutUniCode(q, my_name, sizeof(pstring), True); /* PDC name */
199 q += dos_PutUniCode(q, global_myworkgroup,sizeof(pstring), True); /* Domain name*/
200 SIVAL(q, 0, 1); /* our nt version */
201 SSVAL(q, 4, 0xffff); /* our lmnttoken */
202 SSVAL(q, 6, 0xffff); /* our lm20token */
206 /* RJS, 21-Feb-2000, we send a short reply if the request was short */
208 DEBUG(3,("process_logon_packet: GETDC request from %s at IP %s, \
209 reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n",
210 machine,inet_ntoa(p->ip), reply_name, global_myworkgroup,
211 QUERYFORPDC_R, (uint32)ntversion, (uint32)lmnttoken,
212 (uint32)lm20token ));
214 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
216 send_mailslot(True, getdc,
217 outbuf,PTR_DIFF(q,outbuf),
219 dgram->source_name.name,
220 dgram->source_name.name_type,
221 p->ip, *iface_ip(p->ip), p->port);
232 uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp));
233 getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser));
234 q = skip_string(getdc,1);
235 q += 4; /* Account Control Bits - indicating username type */
236 domainsidsize = IVAL(q, 0);
239 DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d, len = %d\n", domainsidsize, len));
241 if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
246 DEBUG(3,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %d\n", len, PTR_DIFF(q, buf) ));
248 if (len - PTR_DIFF(q, buf) > 8) {
249 /* with NT5 clients we can sometimes
250 get additional data - a length specificed string
251 containing the domain name, then 16 bytes of
252 data (no idea what it is) */
253 int dom_len = CVAL(q, 0);
255 if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
261 ntversion = IVAL(q, 0);
262 lmnttoken = SVAL(q, 4);
263 lm20token = SVAL(q, 6);
266 DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d ntv %d\n", domainsidsize, ntversion));
269 * we respond regadless of whether the machine is in our password
270 * database. If it isn't then we let smbd send an appropriate error.
271 * Let's ignore the SID.
273 pull_ucs2_pstring(ascuser, uniuser);
274 pull_ucs2_fstring(asccomp, unicomp);
275 DEBUG(3,("process_logon_packet: SAMLOGON user %s\n", ascuser));
277 fstrcpy(reply_name,"\\\\"); /* Here it wants \\LOGONSERVER. */
278 fstrcpy(reply_name+2,my_name);
280 DEBUG(3,("process_logon_packet: SAMLOGON request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n",
281 asccomp,inet_ntoa(p->ip), ascuser, reply_name, global_myworkgroup,
282 SAMLOGON_R ,lmnttoken));
284 /* Construct reply. */
287 if (SVAL(uniuser, 0) == 0) {
288 SSVAL(q, 0, SAMLOGON_UNK_R); /* user unknown */
290 SSVAL(q, 0, SAMLOGON_R);
294 q += dos_PutUniCode(q, reply_name,sizeof(pstring), True);
295 q += dos_PutUniCode(q, ascuser, sizeof(pstring), True);
296 q += dos_PutUniCode(q, global_myworkgroup,sizeof(pstring), True);
298 /* tell the client what version we are */
299 SIVAL(q, 0, 1); /* our ntversion */
300 SSVAL(q, 4, 0xffff); /* our lmnttoken */
301 SSVAL(q, 6, 0xffff); /* our lm20token */
304 dump_data(4, outbuf, PTR_DIFF(q, outbuf));
306 send_mailslot(True, getdc,
307 outbuf,PTR_DIFF(q,outbuf),
309 dgram->source_name.name,
310 dgram->source_name.name_type,
311 p->ip, *iface_ip(p->ip), p->port);
315 /* Announce change to UAS or SAM. Send by the domain controller when a
316 replication event is required. */
318 case SAM_UAS_CHANGE: {
319 struct sam_database_info *db_info;
326 low_serial = IVAL(q, 0); q += 4; /* Low serial number */
328 q += 4; /* Date/time */
334 q = skip_string(q, 1); /* PDC name */
335 q = skip_string(q, 1); /* Domain name */
336 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode PDC name */
337 q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode domain name */
341 db_count = SVAL(q, 0); q += 2;
343 db_info = (struct sam_database_info *)
344 malloc(sizeof(struct sam_database_info) * db_count);
346 if (db_info == NULL) {
347 DEBUG(3, ("out of memory allocating info for %d databases\n",
352 for (i = 0; i < db_count; i++) {
353 db_info[i].index = IVAL(q, 0);
354 db_info[i].serial_lo = IVAL(q, 4);
355 db_info[i].serial_hi = IVAL(q, 8);
356 db_info[i].date_lo = IVAL(q, 12);
357 db_info[i].date_hi = IVAL(q, 16);
363 q += IVAL(q, 0) + 4; /* 4 byte length plus data */
365 q += 2; /* Alignment? */
367 /* Misc other info */
369 q += 4; /* NT version (0x1) */
370 q += 2; /* LMNT token (0xff) */
371 q += 2; /* LM20 token (0xff) */
373 SAFE_FREE(db_info); /* Not sure whether we need to do anything
376 /* Send message to smbd */
378 send_repl_message(low_serial);
385 DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code));