source/utils/nmblookup.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    NBT client - used to lookup netbios names
   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 */
  22
  23 #ifdef SYSLOG
  24 #undef SYSLOG
  25 #endif
  26
  27 #include "includes.h"
  28
  29 extern int DEBUGLEVEL;
  30
  31 extern pstring scope;
  32
  33 extern pstring myhostname;
  34 extern struct in_addr ipzero;
  35
  36 int ServerFD= -1;
  37
  38 /****************************************************************************
  39   open the socket communication
  40   **************************************************************************/
  41 static BOOL open_sockets(void)
  42 {
  43   struct hostent *hp;
  44
  45   /* get host info */
  46   if ((hp = Get_Hostbyname(myhostname)) == 0)
  47     {
  48       DEBUG(0,( "Get_Hostbyname: Unknown host. %s\n",myhostname));
  49       return False;
  50     }
  51
  52   ServerFD = open_socket_in(SOCK_DGRAM, 0,3,interpret_addr(lp_socket_address()));
  53
  54   if (ServerFD == -1)
  55     return(False);
  56
  57   set_socket_options(ServerFD,"SO_BROADCAST");
  58
  59   DEBUG(3, ("Socket opened.\n"));
  60   return True;
  61 }
  62
  63
  64 /****************************************************************************
  65   initialise connect, service and file structs
  66 ****************************************************************************/
  67 static BOOL init_structs(void )
  68 {
  69   if (!get_myname(myhostname,NULL))
  70     return(False);
  71
  72   return True;
  73 }
  74
  75 /****************************************************************************
  76 usage on the program
  77 ****************************************************************************/
  78 static void usage(void)
  79 {
  80   printf("Usage: nmblookup [-M] [-B bcast address] [-d debuglevel] name\n");
  81   printf("Version %s\n",VERSION);
  82   printf("\t-d debuglevel         set the debuglevel\n");
  83   printf("\t-B broadcast address  the address to use for broadcasts\n");
  84   printf("\t-M                    searches for a master browser\n");
  85   printf("\t-S                    lookup node status as well\n");
  86   printf("\n");
  87 }
  88
  89
  90 /****************************************************************************
  91   main program
  92 ****************************************************************************/
  93 int main(int argc,char *argv[])
  94 {
  95   int opt;
  96   unsigned int lookup_type = 0x0;
  97   pstring lookup;
  98   extern int optind;
  99   extern char *optarg;
 100   BOOL find_master=False;
 101   BOOL find_status=False;
 102   int i;
 103   static pstring servicesf = CONFIGFILE;
 104   struct in_addr bcast_addr;
 105   BOOL got_bcast = False;
 106
 107   DEBUGLEVEL = 1;
 108   *lookup = 0;
 109
 110   TimeInit();
 111
 112   setup_logging(argv[0],True);
 113
 114   charset_initialise();
 115
 116   while ((opt = getopt(argc, argv, "p:d:B:i:s:SMh")) != EOF)
 117     switch (opt)
 118       {
 119       case 'B':
 120         iface_set_default(NULL,optarg,NULL);
 121         bcast_addr = *interpret_addr2(optarg);
 122         got_bcast = True;
 123         break;
 124       case 'i':
 125         strcpy(scope,optarg);
 126         strupper(scope);
 127         break;
 128       case 'M':
 129         find_master = True;
 130         break;
 131       case 'S':
 132         find_status = True;
 133         break;
 134       case 'd':
 135         DEBUGLEVEL = atoi(optarg);
 136         break;
 137       case 's':
 138         strcpy(servicesf, optarg);
 139         break;
 140       case 'h':
 141         usage();
 142         exit(0);
 143         break;
 144       default:
 145         usage();
 146         exit(1);
 147       }
 148
 149   if (argc < 2) {
 150     usage();
 151     exit(1);
 152   }
 153
 154   if (!lp_load(servicesf,True)) {
 155     fprintf(stderr, "Can't load %s - run testparm to debug it\n", servicesf);
 156   }
 157
 158   load_interfaces();
 159   init_structs();
 160   if (!open_sockets()) return(1);
 161
 162   if (!got_bcast)
 163     bcast_addr = *iface_bcast(ipzero);
 164
 165   DEBUG(1,("Sending queries to %s\n",inet_ntoa(bcast_addr)));
 166
 167
 168   for (i=optind;i<argc;i++)
 169   {
 170       BOOL bcast = True;
 171       int retries = 2;
 172       char *p;
 173       struct in_addr ip;
 174
 175       strcpy(lookup,argv[i]);
 176
 177       if (find_master) {
 178         if (*lookup == '-') {
 179           strcpy(lookup,"\01\02__MSBROWSE__\02");
 180           lookup_type = 1;
 181         } else {
 182           lookup_type = 0x1d;
 183         }
 184       }
 185
 186       p = strchr(lookup,'#');
 187
 188       if (p) {
 189         *p = 0;
 190         sscanf(p+1,"%x",&lookup_type);
 191         bcast = False;
 192         retries = 1;
 193       }
 194
 195     if (name_query(ServerFD,lookup,lookup_type,bcast,True,
 196                    bcast_addr,&ip,NULL))
 197         {
 198           printf("%s %s\n",inet_ntoa(ip),lookup);
 199     }
 200         if (find_status)
 201         {
 202               printf("Looking up status of %s\n",inet_ntoa(ip));
 203               name_status(ServerFD,lookup,lookup_type,True,ip,NULL,NULL,NULL);
 204               printf("\n");
 205         }
 206   }
 207
 208   return(0);
 209 }