source/namelogon.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    NBT netbios routines and daemon - version 2
   5    Copyright (C) Andrew Tridgell 1994-1997
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20
  21    Revision History:
  22
  23    14 jan 96: lkcl@pires.co.uk
  24    added multiple workgroup domain master support
  25
  26 */
  27
  28 #include "includes.h"
  29
  30 extern int ClientDGRAM;
  31
  32 #define TEST_CODE /* want to debug unknown browse packets */
  33
  34 extern int DEBUGLEVEL;
  35
  36 extern pstring myname;
  37
  38
  39 /****************************************************************************
  40    process a domain logon packet
  41
  42    **************************************************************************/
  43 void process_logon_packet(struct packet_struct *p,char *buf,int len)
  44 {
  45   struct dgram_packet *dgram = &p->packet.dgram;
  46   char *logname,*q;
  47   fstring reply_name;
  48   BOOL add_slashes = False;
  49   pstring outbuf;
  50   int code,reply_code;
  51   char   unknown_byte = 0;
  52   uint16 request_count = 0;
  53   uint16 token = 0;
  54
  55   if (!lp_domain_logons())
  56     {
  57       DEBUG(3,("No domain logons\n"));
  58       return;
  59     }
  60
  61
  62   code = SVAL(buf,0);
  63   switch (code)
  64     {
  65     case 0:
  66       {
  67         char *machine = buf+2;
  68         char *user = skip_string(machine,1);
  69         char *tmp;
  70         logname = skip_string(user,1);
  71         tmp = skip_string(logname,1);
  72         unknown_byte = CVAL(tmp,0);
  73         request_count = SVAL(tmp,1);
  74         token = SVAL(tmp,3);
  75
  76         reply_code = 0x6;
  77         fstrcpy(reply_name,myname);
  78         strupper(reply_name);
  79         add_slashes = True;
  80         DEBUG(3,("Domain login request from %s(%s) user=%s token=%x\n",
  81                  machine,inet_ntoa(p->ip),user,token));
  82         break;
  83       }
  84     case 7:
  85       {
  86         char *machine = buf+2;
  87         logname = skip_string(machine,1);
  88         token = SVAL(skip_string(logname,1),0);
  89
  90         fstrcpy(reply_name,lp_domain_controller());
  91         if (!*reply_name)
  92           {
  93             /* oo! no domain controller. must be us, then */
  94             fstrcpy(reply_name,myname);
  95             reply_code = 0xC;
  96           }
  97         else
  98           {
  99             /* refer logon request to the domain controller */
 100             reply_code = 0x7;
 101           }
 102
 103         strupper(reply_name);
 104         DEBUG(3,("GETDC request from %s(%s), reporting %s 0x%x token=%x\n",
 105                  machine,inet_ntoa(p->ip), reply_name, reply_code,token));
 106         break;
 107       }
 108     default:
 109       {
 110         DEBUG(3,("Unknown domain request %d\n",code));
 111         return;
 112       }
 113     }
 114
 115   bzero(outbuf,sizeof(outbuf));
 116   q = outbuf;
 117   SSVAL(q,0,reply_code);
 118   q += 2;
 119
 120   if (token == 0xffff || /* LM 2.0 or later */
 121       token == 0xfffe) /* WfWg networking */
 122     {
 123       if (add_slashes)
 124         {
 125           strcpy(q,"\\\\");
 126           q += 2;
 127         }
 128       strcpy(q, reply_name);
 129       strupper(q);
 130       q = skip_string(q,1);
 131
 132       if (token == 0xffff) /* LM 2.0 or later */
 133         {
 134           SSVAL(q,0,token);
 135           q += 2;
 136         }
 137     }
 138
 139   SSVAL(q,0,0xFFFF);
 140   q += 2;
 141
 142   send_mailslot_reply(True, logname,ClientDGRAM,outbuf,PTR_DIFF(q,outbuf),
 143                       myname,&dgram->source_name.name[0],0x20,0,p->ip,
 144                       *iface_ip(p->ip));
 145 }