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-rw-r--r--source/namelogon.c233
1 files changed, 233 insertions, 0 deletions
diff --git a/source/namelogon.c b/source/namelogon.c
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--- /dev/null
+++ b/source/namelogon.c
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+/*
+ Unix SMB/Netbios implementation.
+ Version 1.9.
+ NBT netbios routines and daemon - version 2
+ Copyright (C) Andrew Tridgell 1994-1997
+
+ 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:
+
+ 14 jan 96: lkcl@pires.co.uk
+ added multiple workgroup domain master support
+
+*/
+
+#include "includes.h"
+
+extern int ClientDGRAM;
+
+extern int DEBUGLEVEL;
+
+extern pstring myname;
+
+
+/****************************************************************************
+ process a domain logon packet
+
+ **************************************************************************/
+void process_logon_packet(struct packet_struct *p,char *buf,int len)
+{
+ struct dgram_packet *dgram = &p->packet.dgram;
+ pstring my_name;
+ fstring reply_name;
+ BOOL add_slashes = False;
+ pstring outbuf;
+ int code,reply_code;
+ char unknown_byte = 0;
+ uint16 request_count = 0;
+ uint16 token = 0;
+
+ uint32 ntversion;
+ uint16 lmnttoken;
+ uint16 lm20token;
+ uint32 allowableaccount; /* Control bits, i.e. 0x80 == workstation trust a/c */
+ uint32 domainsidsize;
+ uint16 requestcount;
+ char *domainsid;
+ char *uniuser; /* Unicode user name */
+ pstring ascuser;
+ char *mailslot;
+ char *unicomp; /* Unicode computer name */
+ struct smb_passwd *smb_pass; /* To check if machine account exists */
+
+ if (!lp_domain_logons())
+ {
+ DEBUG(3,("No domain logons\n"));
+ return;
+ }
+
+ strcpy(my_name, myname);
+ strupper(my_name);
+
+ code = SVAL(buf,0);
+ DEBUG(1,("namelogon from %s: %x\n", inet_ntoa(p->ip), code));
+
+ switch (code)
+ {
+ case 0:
+ {
+ char *q = buf + 2;
+ char *machine = q;
+ char *user = skip_string(machine,1);
+
+ mailslot = skip_string(user,1);
+ q = skip_string(mailslot,1);
+ unknown_byte = CVAL(q,0);
+ request_count = SVAL(q,1);
+ token = SVAL(q,3);
+
+ reply_code = 0x6;
+ strcpy(reply_name,my_name);
+ add_slashes = True;
+
+ DEBUG(3,("Domain login request from %s(%s) user=%s token=%x\n",
+ machine,inet_ntoa(p->ip),user,token));
+
+ q = outbuf;
+ SSVAL(q, 0, 6); q += 2;
+
+ strcpy(reply_name, "\\\\");
+ strcat(reply_name, my_name);
+ strcpy(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_reply(True, mailslot, ClientDGRAM,
+ outbuf,PTR_DIFF(q,outbuf),
+ my_name,&dgram->source_name.name[0],0x20,0,
+ p->ip, *iface_ip(p->ip));
+ break;
+ }
+
+ case QUERYFORPDC:
+ {
+ char *q = buf + 2;
+ char *machine = q;
+ mailslot = skip_string(machine,1);
+ unicomp = skip_string(mailslot,1);
+
+ q = align2(q, buf);
+
+ q = skip_unicode_string(unicomp,1);
+
+ ntversion = IVAL(q, 0); q += 4;
+ lmnttoken = SVAL(q, 0); q += 2;
+ lm20token = SVAL(q, 0); q += 2;
+
+ /* construct reply */
+
+ q = outbuf;
+ SSVAL(q, 0, QUERYFORPDC_R); q += 2;
+
+ strcpy(reply_name,my_name);
+ strcpy(q, reply_name); q = skip_string(q, 1); /* PDC name */
+
+ q = align2(q, buf);
+
+ PutUniCode(q, my_name); q = skip_unicode_string(q, 1); /* PDC name */
+ PutUniCode(q, lp_workgroup()); q = skip_unicode_string(q, 1); /* Domain name. */
+
+ SIVAL(q, 0, ntversion); q += 4;
+ SSVAL(q, 0, lmnttoken); q += 2;
+ SSVAL(q, 0, lm20token); q += 2;
+
+ DEBUG(3,("GETDC request from %s(%s), reporting %s domain %s 0x%x ntversion=%x lm_nt token=%x lm_20 token=%x\n",
+ machine,inet_ntoa(p->ip), reply_name, lp_workgroup(),
+ QUERYFORPDC_R, (uint32)ntversion, (uint32)lmnttoken,
+ (uint32)lm20token));
+
+ dump_data(4, outbuf, PTR_DIFF(q, outbuf));
+
+ send_mailslot_reply(True, mailslot,ClientDGRAM,
+ outbuf,PTR_DIFF(q,outbuf),
+ my_name,&dgram->source_name.name[0],0x20,0,
+ p->ip, *iface_ip(p->ip));
+ return;
+ }
+
+ case SAMLOGON:
+ {
+ char *q = buf + 2;
+
+ requestcount = SVAL(q, 0); q += 2;
+ unicomp = q;
+ uniuser = skip_unicode_string(unicomp,1);
+ mailslot = skip_unicode_string(uniuser,1);
+ q = skip_string(mailslot,1);
+ allowableaccount = IVAL(q, 0); q += 4;
+ domainsidsize = IVAL(q, 0); q += 4;
+ domainsid = q;
+ q += domainsidsize + 3;
+ ntversion = IVAL(q, 0); q += 4;
+ lmnttoken = SVAL(q, 0); q += 2;
+ lm20token = SVAL(q, 0); q += 2;
+ DEBUG(3,("SAMLOGON sidsize %d ntv %d\n", domainsidsize, ntversion));
+
+ /*
+ If MACHINE$ is in our password database then respond, else ignore.
+ Let's ignore the SID.
+ */
+ strcpy(ascuser,unistr(uniuser));
+ DEBUG(3,("SAMLOGON user %s\n", ascuser));
+ strcpy(reply_name,"\\\\"); /* Here it wants \\LOGONSERVER */
+ strcpy(reply_name+2,my_name); /* PAXX: Assuming we are logon svr */
+ smb_pass = get_smbpwnam(ascuser);
+
+ if(!smb_pass)
+ {
+ DEBUG(3,("SAMLOGON request from %s(%s) for %s, not in password file\n",
+ unistr(unicomp),inet_ntoa(p->ip), ascuser));
+ return;
+ }
+ else
+ {
+ DEBUG(3,("SAMLOGON request from %s(%s) for %s, returning logon svr %s domain %s code %x token=%x\n",
+ unistr(unicomp),inet_ntoa(p->ip), ascuser, reply_name, lp_workgroup(),
+ SAMLOGON_R ,lmnttoken));
+ }
+
+ /* construct reply */
+
+ q = outbuf;
+ SSVAL(q, 0, SAMLOGON_R); q += 2;
+
+ PutUniCode(q, reply_name); q = skip_unicode_string(q, 1);
+ unistrcpy(q, uniuser); q = skip_unicode_string(q, 1); /* User name (workstation trust account) */
+ PutUniCode(q, lp_workgroup()); q = skip_unicode_string(q, 1); /* Domain name. */
+
+ SIVAL(q, 0, ntversion); q += 4;
+ SSVAL(q, 0, lmnttoken); q += 2;
+ SSVAL(q, 0, lm20token); q += 2;
+
+ dump_data(4, outbuf, PTR_DIFF(q, outbuf));
+
+ send_mailslot_reply(True, mailslot,ClientDGRAM,
+ outbuf,PTR_DIFF(q,outbuf),
+ my_name,&dgram->source_name.name[0],0x20,0,
+ p->ip, *iface_ip(p->ip));
+ break;
+ }
+
+ default:
+ {
+ DEBUG(3,("Unknown domain request %d\n",code));
+ return;
+ }
+ }
+
+}
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