--- /dev/null
+/*
+ Unix SMB/CIFS implementation.
+ NBT netbios routines and daemon - version 2
+ Copyright (C) Andrew Tridgell 1994-1998
+ Copyright (C) Luke Kenneth Casson Leighton 1994-1998
+ Copyright (C) Jeremy Allison 1994-2003
+ Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ Revision History:
+
+*/
+
+#include "includes.h"
+
+struct sam_database_info {
+ uint32 index;
+ uint32 serial_lo, serial_hi;
+ uint32 date_lo, date_hi;
+};
+
+/****************************************************************************
+Send a message to smbd to do a sam delta sync
+**************************************************************************/
+
+static void send_repl_message(uint32 low_serial)
+{
+ TDB_CONTEXT *tdb;
+
+ tdb = tdb_open_log(lock_path("connections.tdb"), 0,
+ TDB_DEFAULT, O_RDONLY, 0);
+
+ if (!tdb) {
+ DEBUG(3, ("send_repl_message(): failed to open connections "
+ "database\n"));
+ return;
+ }
+
+ DEBUG(3, ("sending replication message, serial = 0x%04x\n",
+ low_serial));
+
+ message_send_all(tdb, MSG_SMB_SAM_REPL, &low_serial,
+ sizeof(low_serial), False, NULL);
+
+ tdb_close(tdb);
+}
+
+/****************************************************************************
+Process a domain logon packet
+**************************************************************************/
+
+void process_logon_packet(struct packet_struct *p, char *buf,int len,
+ const char *mailslot)
+{
+ struct dgram_packet *dgram = &p->packet.dgram;
+ pstring my_name;
+ fstring reply_name;
+ pstring outbuf;
+ int code;
+ uint16 token = 0;
+ uint32 ntversion = 0;
+ uint16 lmnttoken = 0;
+ uint16 lm20token = 0;
+ uint32 domainsidsize;
+ BOOL short_request = False;
+ char *getdc;
+ char *uniuser; /* Unicode user name. */
+ pstring ascuser;
+ char *unicomp; /* Unicode computer name. */
+
+ memset(outbuf, 0, sizeof(outbuf));
+
+ if (!lp_domain_logons()) {
+ DEBUG(5,("process_logon_packet: Logon packet received from IP %s and domain \
+logons are not enabled.\n", inet_ntoa(p->ip) ));
+ return;
+ }
+
+ pstrcpy(my_name, global_myname());
+
+ code = SVAL(buf,0);
+ DEBUG(4,("process_logon_packet: Logon from %s: code = 0x%x\n", inet_ntoa(p->ip), code));
+
+ switch (code) {
+ case 0:
+ {
+ fstring mach_str, user_str, getdc_str;
+ char *q = buf + 2;
+ char *machine = q;
+ char *user = skip_string(machine,1);
+
+ if (PTR_DIFF(user, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+ getdc = skip_string(user,1);
+
+ if (PTR_DIFF(getdc, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+ q = skip_string(getdc,1);
+
+ if (PTR_DIFF(q + 5, buf) > len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+ token = SVAL(q,3);
+
+ fstrcpy(reply_name,my_name);
+
+ pull_ascii_fstring(mach_str, machine);
+ pull_ascii_fstring(user_str, user);
+ pull_ascii_fstring(getdc_str, getdc);
+
+ DEBUG(5,("process_logon_packet: Domain login request from %s at IP %s user=%s token=%x\n",
+ mach_str,inet_ntoa(p->ip),user_str,token));
+
+ q = outbuf;
+ SSVAL(q, 0, 6);
+ q += 2;
+
+ fstrcpy(reply_name, "\\\\");
+ fstrcat(reply_name, my_name);
+ push_ascii_fstring(q, reply_name);
+ q = skip_string(q, 1); /* PDC name */
+
+ SSVAL(q, 0, token);
+ q += 2;
+
+ dump_data(4, outbuf, PTR_DIFF(q, outbuf));
+
+ send_mailslot(True, getdc_str,
+ outbuf,PTR_DIFF(q,outbuf),
+ global_myname(), 0x0,
+ mach_str,
+ dgram->source_name.name_type,
+ p->ip, *iface_ip(p->ip), p->port);
+ break;
+ }
+
+ case QUERYFORPDC:
+ {
+ fstring mach_str, getdc_str;
+ fstring source_name;
+ char *q = buf + 2;
+ char *machine = q;
+
+ if (!lp_domain_master()) {
+ /* We're not Primary Domain Controller -- ignore this */
+ return;
+ }
+
+ getdc = skip_string(machine,1);
+
+ if (PTR_DIFF(getdc, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+ q = skip_string(getdc,1);
+
+ if (PTR_DIFF(q, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+ q = ALIGN2(q, buf);
+
+ /* At this point we can work out if this is a W9X or NT style
+ request. Experiments show that the difference is wether the
+ packet ends here. For a W9X request we now end with a pair of
+ bytes (usually 0xFE 0xFF) whereas with NT we have two further
+ strings - the following is a simple way of detecting this */
+
+ if (len - PTR_DIFF(q, buf) <= 3) {
+ short_request = True;
+ } else {
+ unicomp = q;
+
+ if (PTR_DIFF(q, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ /* A full length (NT style) request */
+ q = skip_unibuf(unicomp, PTR_DIFF(buf + len, unicomp));
+
+ if (PTR_DIFF(q, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ if (len - PTR_DIFF(q, buf) > 8) {
+ /* with NT5 clients we can sometimes
+ get additional data - a length specificed string
+ containing the domain name, then 16 bytes of
+ data (no idea what it is) */
+ int dom_len = CVAL(q, 0);
+ q++;
+ if (dom_len != 0) {
+ q += dom_len + 1;
+ }
+ q += 16;
+ }
+
+ if (PTR_DIFF(q + 8, buf) > len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ ntversion = IVAL(q, 0);
+ lmnttoken = SVAL(q, 4);
+ lm20token = SVAL(q, 6);
+ }
+
+ /* Construct reply. */
+ q = outbuf;
+ SSVAL(q, 0, QUERYFORPDC_R);
+ q += 2;
+
+ fstrcpy(reply_name,my_name);
+ push_ascii_fstring(q, reply_name);
+ q = skip_string(q, 1); /* PDC name */
+
+ /* PDC and domain name */
+ if (!short_request) {
+ /* Make a full reply */
+ q = ALIGN2(q, outbuf);
+
+ q += dos_PutUniCode(q, my_name, sizeof(pstring), True); /* PDC name */
+ q += dos_PutUniCode(q, lp_workgroup(),sizeof(pstring), True); /* Domain name*/
+ SIVAL(q, 0, 1); /* our nt version */
+ SSVAL(q, 4, 0xffff); /* our lmnttoken */
+ SSVAL(q, 6, 0xffff); /* our lm20token */
+ q += 8;
+ }
+
+ /* RJS, 21-Feb-2000, we send a short reply if the request was short */
+
+ pull_ascii_fstring(mach_str, machine);
+
+ DEBUG(5,("process_logon_packet: GETDC request from %s at IP %s, \
+reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n",
+ mach_str,inet_ntoa(p->ip), reply_name, lp_workgroup(),
+ QUERYFORPDC_R, (uint32)ntversion, (uint32)lmnttoken,
+ (uint32)lm20token ));
+
+ dump_data(4, outbuf, PTR_DIFF(q, outbuf));
+
+ pull_ascii_fstring(getdc_str, getdc);
+ pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
+
+ send_mailslot(True, getdc_str,
+ outbuf,PTR_DIFF(q,outbuf),
+ global_myname(), 0x0,
+ source_name,
+ dgram->source_name.name_type,
+ p->ip, *iface_ip(p->ip), p->port);
+ return;
+ }
+
+ case SAMLOGON:
+
+ {
+ fstring getdc_str;
+ fstring source_name;
+ char *q = buf + 2;
+ fstring asccomp;
+
+ q += 2;
+
+ if (PTR_DIFF(q, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ unicomp = q;
+ uniuser = skip_unibuf(unicomp, PTR_DIFF(buf+len, unicomp));
+
+ if (PTR_DIFF(uniuser, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ getdc = skip_unibuf(uniuser,PTR_DIFF(buf+len, uniuser));
+
+ if (PTR_DIFF(getdc, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ q = skip_string(getdc,1);
+
+ if (PTR_DIFF(q + 8, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ q += 4; /* Account Control Bits - indicating username type */
+ domainsidsize = IVAL(q, 0);
+ q += 4;
+
+ DEBUG(5,("process_logon_packet: SAMLOGON sidsize %d, len = %d\n", domainsidsize, len));
+
+ if (domainsidsize < (len - PTR_DIFF(q, buf)) && (domainsidsize != 0)) {
+ q += domainsidsize;
+ q = ALIGN4(q, buf);
+ }
+
+ DEBUG(5,("process_logon_packet: len = %d PTR_DIFF(q, buf) = %ld\n", len, (unsigned long)PTR_DIFF(q, buf) ));
+
+ if (len - PTR_DIFF(q, buf) > 8) {
+ /* with NT5 clients we can sometimes
+ get additional data - a length specificed string
+ containing the domain name, then 16 bytes of
+ data (no idea what it is) */
+ int dom_len = CVAL(q, 0);
+ q++;
+ if (dom_len < (len - PTR_DIFF(q, buf)) && (dom_len != 0)) {
+ q += dom_len + 1;
+ }
+ q += 16;
+ }
+
+ if (PTR_DIFF(q + 8, buf) > len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ ntversion = IVAL(q, 0);
+ lmnttoken = SVAL(q, 4);
+ lm20token = SVAL(q, 6);
+ q += 8;
+
+ DEBUG(3,("process_logon_packet: SAMLOGON sidsize %d ntv %d\n", domainsidsize, ntversion));
+
+ /*
+ * we respond regadless of whether the machine is in our password
+ * database. If it isn't then we let smbd send an appropriate error.
+ * Let's ignore the SID.
+ */
+ pull_ucs2_pstring(ascuser, uniuser);
+ pull_ucs2_fstring(asccomp, unicomp);
+ DEBUG(5,("process_logon_packet: SAMLOGON user %s\n", ascuser));
+
+ fstrcpy(reply_name, "\\\\"); /* Here it wants \\LOGONSERVER. */
+ fstrcat(reply_name, my_name);
+
+ DEBUG(5,("process_logon_packet: SAMLOGON request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n",
+ asccomp,inet_ntoa(p->ip), ascuser, reply_name, lp_workgroup(),
+ SAMLOGON_R ,lmnttoken));
+
+ /* Construct reply. */
+
+ q = outbuf;
+ /* we want the simple version unless we are an ADS PDC..which means */
+ /* never, at least for now */
+ if ((ntversion < 11) || (SEC_ADS != lp_security()) || (ROLE_DOMAIN_PDC != lp_server_role())) {
+ if (SVAL(uniuser, 0) == 0) {
+ SSVAL(q, 0, SAMLOGON_UNK_R); /* user unknown */
+ } else {
+ SSVAL(q, 0, SAMLOGON_R);
+ }
+
+ q += 2;
+
+ q += dos_PutUniCode(q, reply_name,sizeof(pstring), True);
+ q += dos_PutUniCode(q, ascuser, sizeof(pstring), True);
+ q += dos_PutUniCode(q, lp_workgroup(),sizeof(pstring), True);
+ }
+#ifdef HAVE_ADS
+ else {
+ struct uuid domain_guid;
+ UUID_FLAT flat_guid;
+ pstring domain;
+ pstring hostname;
+ char *component, *dc, *q1;
+ uint8 size;
+ char *q_orig = q;
+ int str_offset;
+
+ get_mydnsdomname(domain);
+ get_myname(hostname);
+
+ if (SVAL(uniuser, 0) == 0) {
+ SIVAL(q, 0, SAMLOGON_AD_UNK_R); /* user unknown */
+ } else {
+ SIVAL(q, 0, SAMLOGON_AD_R);
+ }
+ q += 4;
+
+ SIVAL(q, 0, ADS_PDC|ADS_GC|ADS_LDAP|ADS_DS|
+ ADS_KDC|ADS_TIMESERV|ADS_CLOSEST|ADS_WRITABLE);
+ q += 4;
+
+ /* Push Domain GUID */
+ if (False == secrets_fetch_domain_guid(domain, &domain_guid)) {
+ DEBUG(2, ("Could not fetch DomainGUID for %s\n", domain));
+ return;
+ }
+
+ smb_uuid_pack(domain_guid, &flat_guid);
+ memcpy(q, &flat_guid.info, UUID_FLAT_SIZE);
+ q += UUID_FLAT_SIZE;
+
+ /* Forest */
+ str_offset = q - q_orig;
+ dc = domain;
+ q1 = q;
+ while ((component = strtok(dc, "."))) {
+ dc = NULL;
+ size = push_ascii(&q[1], component, -1, 0);
+ SCVAL(q, 0, size);
+ q += (size + 1);
+ }
+
+ /* Unk0 */
+ SCVAL(q, 0, 0);
+ q++;
+
+ /* Domain */
+ SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
+ SCVAL(q, 1, str_offset & 0xFF);
+ q += 2;
+
+ /* Hostname */
+ size = push_ascii(&q[1], hostname, -1, 0);
+ SCVAL(q, 0, size);
+ q += (size + 1);
+ SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
+ SCVAL(q, 1, str_offset & 0xFF);
+ q += 2;
+
+ /* NETBIOS of domain */
+ size = push_ascii(&q[1], lp_workgroup(), -1, STR_UPPER);
+ SCVAL(q, 0, size);
+ q += (size + 1);
+
+ /* Unk1 */
+ SCVAL(q, 0, 0);
+ q++;
+
+ /* NETBIOS of hostname */
+ size = push_ascii(&q[1], my_name, -1, 0);
+ SCVAL(q, 0, size);
+ q += (size + 1);
+
+ /* Unk2 */
+ SCVAL(q, 0, 0);
+ q++;
+
+ /* User name */
+ if (SVAL(uniuser, 0) != 0) {
+ size = push_ascii(&q[1], ascuser, -1, 0);
+ SCVAL(q, 0, size);
+ q += (size + 1);
+ }
+
+ q_orig = q;
+ /* Site name */
+ size = push_ascii(&q[1], "Default-First-Site-Name", -1, 0);
+ SCVAL(q, 0, size);
+ q += (size + 1);
+
+ /* Site name (2) */
+ str_offset = q - q_orig;
+ SCVAL(q, 0, 0xc0 | ((str_offset >> 8) & 0x3F));
+ SCVAL(q, 1, str_offset & 0xFF);
+ q += 2;
+
+ SCVAL(q, 0, PTR_DIFF(q,q1));
+ SCVAL(q, 1, 0x10); /* unknown */
+
+ SIVAL(q, 0, 0x00000002);
+ q += 4; /* unknown */
+ SIVAL(q, 0, (iface_ip(p->ip))->s_addr);
+ q += 4;
+ SIVAL(q, 0, 0x00000000);
+ q += 4; /* unknown */
+ SIVAL(q, 0, 0x00000000);
+ q += 4; /* unknown */
+ }
+#endif
+
+ /* tell the client what version we are */
+ SIVAL(q, 0, ((ntversion < 11) || (SEC_ADS != lp_security())) ? 1 : 13);
+ /* our ntversion */
+ SSVAL(q, 4, 0xffff); /* our lmnttoken */
+ SSVAL(q, 6, 0xffff); /* our lm20token */
+ q += 8;
+
+ dump_data(4, outbuf, PTR_DIFF(q, outbuf));
+
+ pull_ascii_fstring(getdc_str, getdc);
+ pull_ascii_nstring(source_name, sizeof(source_name), dgram->source_name.name);
+
+ send_mailslot(True, getdc,
+ outbuf,PTR_DIFF(q,outbuf),
+ global_myname(), 0x0,
+ source_name,
+ dgram->source_name.name_type,
+ p->ip, *iface_ip(p->ip), p->port);
+ break;
+ }
+
+ /* Announce change to UAS or SAM. Send by the domain controller when a
+ replication event is required. */
+
+ case SAM_UAS_CHANGE:
+ {
+ struct sam_database_info *db_info;
+ char *q = buf + 2;
+ int i, db_count;
+ uint32 low_serial;
+
+ /* Header */
+
+ if (PTR_DIFF(q + 16, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ low_serial = IVAL(q, 0); q += 4; /* Low serial number */
+
+ q += 4; /* Date/time */
+ q += 4; /* Pulse */
+ q += 4; /* Random */
+
+ /* Domain info */
+
+ q = skip_string(q, 1); /* PDC name */
+
+ if (PTR_DIFF(q, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ q = skip_string(q, 1); /* Domain name */
+
+ if (PTR_DIFF(q, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode PDC name */
+
+ if (PTR_DIFF(q, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ q = skip_unibuf(q, PTR_DIFF(buf + len, q)); /* Unicode domain name */
+
+ /* Database info */
+
+ if (PTR_DIFF(q + 2, buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ db_count = SVAL(q, 0); q += 2;
+
+ if (PTR_DIFF(q + (db_count*20), buf) >= len) {
+ DEBUG(0,("process_logon_packet: bad packet\n"));
+ return;
+ }
+
+ db_info = SMB_MALLOC_ARRAY(struct sam_database_info, db_count);
+
+ if (db_info == NULL) {
+ DEBUG(3, ("out of memory allocating info for %d databases\n", db_count));
+ return;
+ }
+
+ for (i = 0; i < db_count; i++) {
+ db_info[i].index = IVAL(q, 0);
+ db_info[i].serial_lo = IVAL(q, 4);
+ db_info[i].serial_hi = IVAL(q, 8);
+ db_info[i].date_lo = IVAL(q, 12);
+ db_info[i].date_hi = IVAL(q, 16);
+ q += 20;
+ }
+
+ /* Domain SID */
+
+#if 0
+ /* We must range check this. */
+ q += IVAL(q, 0) + 4; /* 4 byte length plus data */
+
+ q += 2; /* Alignment? */
+
+ /* Misc other info */
+
+ q += 4; /* NT version (0x1) */
+ q += 2; /* LMNT token (0xff) */
+ q += 2; /* LM20 token (0xff) */
+#endif
+
+ SAFE_FREE(db_info); /* Not sure whether we need to do anything useful with these */
+
+ /* Send message to smbd */
+
+ send_repl_message(low_serial);
+ break;
+ }
+
+ default:
+ DEBUG(3,("process_logon_packet: Unknown domain request %d\n",code));
+ return;
+ }
+}
projects / samba / blobdiff