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 int RootPort = 0;
  39
  40 /****************************************************************************
  41   open the socket communication
  42   **************************************************************************/
  43 static BOOL open_sockets(void)
  44 {
  45   struct hostent *hp;
  46
  47   /* get host info */
  48   if ((hp = Get_Hostbyname(myhostname)) == 0)
  49     {
  50       DEBUG(0,( "Get_Hostbyname: Unknown host. %s\n",myhostname));
  51       return False;
  52     }
  53
  54   ServerFD = open_socket_in( SOCK_DGRAM,
  55                              (RootPort ? 137 :0),
  56                              3,
  57                              interpret_addr(lp_socket_address()) );
  58
  59   if (ServerFD == -1)
  60     return(False);
  61
  62   set_socket_options(ServerFD,"SO_BROADCAST");
  63
  64   DEBUG(3, ("Socket opened.\n"));
  65   return True;
  66 }
  67
  68
  69 /****************************************************************************
  70   initialise connect, service and file structs
  71 ****************************************************************************/
  72 static BOOL init_structs(void )
  73 {
  74   if (!get_myname(myhostname,NULL))
  75     return(False);
  76
  77   return True;
  78 }
  79
  80 /****************************************************************************
  81 usage on the program
  82 ****************************************************************************/
  83 static void usage(void)
  84 {
  85   printf("Usage: nmblookup [-M] [-B bcast address] [-d debuglevel] name\n");
  86   printf("Version %s\n",VERSION);
  87   printf("\t-d debuglevel         set the debuglevel\n");
  88   printf("\t-B broadcast address  the address to use for broadcasts\n");
  89   printf("\t-M                    searches for a master browser\n");
  90   printf("\t-S                    lookup node status as well\n");
  91   printf("\t-r                    Use root port 137 (Win95 only replies to this)\n");
  92   printf("\t-A                    Do a node status on <name> as an IP Address\n");
  93   printf("\n");
  94 }
  95
  96
  97 /****************************************************************************
  98   main program
  99 ****************************************************************************/
 100 int main(int argc,char *argv[])
 101 {
 102   int opt;
 103   unsigned int lookup_type = 0x0;
 104   pstring lookup;
 105   extern int optind;
 106   extern char *optarg;
 107   BOOL find_master=False;
 108   BOOL find_status=False;
 109   int i;
 110   static pstring servicesf = CONFIGFILE;
 111   struct in_addr bcast_addr;
 112   BOOL got_bcast = False;
 113   BOOL lookup_by_ip = False;
 114
 115   DEBUGLEVEL = 1;
 116   *lookup = 0;
 117
 118   TimeInit();
 119
 120   setup_logging(argv[0],True);
 121
 122   charset_initialise();
 123
 124   while ((opt = getopt(argc, argv, "d:B:i:s:SMrhA")) != EOF)
 125     switch (opt)
 126       {
 127       case 'B':
 128         iface_set_default(NULL,optarg,NULL);
 129         bcast_addr = *interpret_addr2(optarg);
 130         got_bcast = True;
 131         break;
 132       case 'i':
 133         fstrcpy(scope,optarg);
 134         strupper(scope);
 135         break;
 136       case 'M':
 137         find_master = True;
 138         break;
 139       case 'S':
 140         find_status = True;
 141         break;
 142       case 'd':
 143         DEBUGLEVEL = atoi(optarg);
 144         break;
 145       case 's':
 146         pstrcpy(servicesf, optarg);
 147         break;
 148       case 'r':
 149         RootPort = -1;
 150         break;
 151       case 'h':
 152         usage();
 153         exit(0);
 154         break;
 155       case 'A':
 156         lookup_by_ip = True;
 157         break;
 158       default:
 159         usage();
 160         exit(1);
 161       }
 162
 163   if (argc < 2) {
 164     usage();
 165     exit(1);
 166   }
 167
 168   if (!lp_load(servicesf,True)) {
 169     fprintf(stderr, "Can't load %s - run testparm to debug it\n", servicesf);
 170   }
 171
 172   load_interfaces();
 173   init_structs();
 174   if (!open_sockets()) return(1);
 175
 176   if (!got_bcast)
 177     bcast_addr = *iface_bcast(ipzero);
 178
 179   DEBUG(1,("Sending queries to %s\n",inet_ntoa(bcast_addr)));
 180
 181
 182   for (i=optind;i<argc;i++)
 183   {
 184       BOOL bcast = True;
 185       int retries = 2;
 186       char *p;
 187       struct in_addr ip;
 188
 189       fstrcpy(lookup,argv[i]);
 190
 191       if(lookup_by_ip)
 192       {
 193         strcpy(lookup,"*");
 194         ip = *interpret_addr2(argv[i]);
 195         printf("Looking up status of %s\n",inet_ntoa(ip));
 196         name_status(ServerFD,lookup,lookup_type,True,ip,NULL,NULL,NULL);
 197         printf("\n");
 198         continue;
 199       }
 200
 201       if (find_master) {
 202         if (*lookup == '-') {
 203           strcpy(lookup,"\01\02__MSBROWSE__\02");
 204           lookup_type = 1;
 205         } else {
 206           lookup_type = 0x1d;
 207         }
 208       }
 209
 210       p = strchr(lookup,'#');
 211
 212       if (p) {
 213         *p = 0;
 214         sscanf(p+1,"%x",&lookup_type);
 215         bcast = False;
 216         retries = 1;
 217       }
 218
 219       if (name_query(ServerFD,lookup,lookup_type,bcast,True,
 220                    bcast_addr,&ip,NULL))
 221       {
 222         printf("%s %s\n",inet_ntoa(ip),lookup);
 223
 224         /* We can only do find_status if the ip address returned
 225            was valid - ie. name_query returned true.
 226          */
 227         if (find_status)
 228         {
 229               printf("Looking up status of %s\n",inet_ntoa(ip));
 230               name_status(ServerFD,lookup,lookup_type,True,ip,NULL,NULL,NULL);
 231               printf("\n");
 232         }
 233       }
 234       else
 235       {
 236         printf("name_query failed to find name %s\n", lookup);
 237       }
 238   }
 239
 240   return(0);
 241 }