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 1994-1995
   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 void process_logon_packet(struct packet_struct *p,char *buf,int len)
  43 {
  44   struct dgram_packet *dgram = &p->packet.dgram;
  45   struct in_addr ip = dgram->header.source_ip;
  46   struct subnet_record *d = find_subnet(ip);
  47   char *logname,*q;
  48   char *reply_name;
  49   BOOL add_slashes = False;
  50   pstring outbuf;
  51   int code,reply_code;
  52   struct work_record *work;
  53
  54   if (!d) return;
  55
  56   if (!(work = find_workgroupstruct(d,dgram->dest_name.name, False)))
  57     return;
  58
  59   if (!lp_domain_logons()) {
  60     DEBUG(3,("No domain logons\n"));
  61     return;
  62   }
  63   if (!listening_name(work, &dgram->dest_name))
  64     {
  65       DEBUG(4,("Not listening to that domain\n"));
  66       return;
  67     }
  68
  69   code = SVAL(buf,0);
  70   switch (code) {
  71   case 0:
  72     {
  73       char *machine = buf+2;
  74       char *user = skip_string(machine,1);
  75       logname = skip_string(user,1);
  76       reply_code = 6;
  77       reply_name = myname;
  78       add_slashes = True;
  79       DEBUG(3,("Domain login request from %s(%s) user=%s\n",
  80                machine,inet_ntoa(p->ip),user));
  81     }
  82     break;
  83   case 7:
  84     {
  85       char *machine = buf+2;
  86       logname = skip_string(machine,1);
  87       reply_code = 7;
  88       reply_name = lp_domain_controller();
  89       if (!*reply_name) {
  90         DEBUG(3,("No domain controller configured\n"));
  91         return;
  92       }
  93       DEBUG(3,("GETDC request from %s(%s)\n",
  94                machine,inet_ntoa(p->ip)));
  95     }
  96     break;
  97   default:
  98     DEBUG(3,("Unknown domain request %d\n",code));
  99     return;
 100   }
 101
 102   bzero(outbuf,sizeof(outbuf));
 103   q = outbuf;
 104   SSVAL(q,0,reply_code);
 105   q += 2;
 106   if (add_slashes) {
 107     strcpy(q,"\\\\");
 108     q += 2;
 109   }
 110   StrnCpy(q,reply_name,16);
 111   strupper(q);
 112   q = skip_string(q,1);
 113   SSVAL(q,0,0xFFFF);
 114   q += 2;
 115
 116   send_mailslot_reply(logname,ClientDGRAM,outbuf,PTR_DIFF(q,outbuf),
 117                       myname,&dgram->source_name.name[0],0x20,0,p->ip,
 118                       *iface_ip(p->ip));
 119 }