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 1994-1998
   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 #define NO_SYSLOG
  24
  25 #include "includes.h"
  26
  27 extern struct in_addr ipzero;
  28
  29 static BOOL use_bcast = True;
  30 static BOOL got_bcast = False;
  31 static struct in_addr bcast_addr;
  32 static BOOL recursion_desired = False;
  33 static BOOL translate_addresses = False;
  34 static int ServerFD= -1;
  35 static int RootPort = False;
  36 static BOOL find_status=False;
  37
  38 /****************************************************************************
  39   open the socket communication
  40   **************************************************************************/
  41 static BOOL open_sockets(void)
  42 {
  43   ServerFD = open_socket_in( SOCK_DGRAM,
  44                              (RootPort ? 137 : 0),
  45                              (RootPort ?   0 : 3),
  46                              interpret_addr(lp_socket_address()), True );
  47
  48   if (ServerFD == -1)
  49     return(False);
  50
  51   set_socket_options( ServerFD, "SO_BROADCAST" );
  52
  53   DEBUG(3, ("Socket opened.\n"));
  54   return True;
  55 }
  56
  57
  58 /****************************************************************************
  59 usage on the program
  60 ****************************************************************************/
  61 static void usage(void)
  62 {
  63   printf("Usage: nmblookup [-M] [-B bcast address] [-d debuglevel] name\n");
  64   printf("Version %s\n",VERSION);
  65   printf("\t-d debuglevel         set the debuglevel\n");
  66   printf("\t-B broadcast address  the address to use for broadcasts\n");
  67   printf("\t-U unicast   address  the address to use for unicast\n");
  68   printf("\t-M                    searches for a master browser\n");
  69   printf("\t-R                    set recursion desired in packet\n");
  70   printf("\t-S                    lookup node status as well\n");
  71   printf("\t-T                    translate IP addresses into names\n");
  72   printf("\t-r                    Use root port 137 (Win95 only replies to this)\n");
  73   printf("\t-A                    Do a node status on <name> as an IP Address\n");
  74   printf("\t-i NetBIOS scope      Use the given NetBIOS scope for name queries\n");
  75   printf("\t-s smb.conf file      Use the given path to the smb.conf file\n");
  76   printf("\t-h                    Print this help message.\n");
  77   printf("\n  If you specify -M and name is \"-\", nmblookup looks up __MSBROWSE__<01>\n");
  78   printf("\n");
  79 }
  80
  81 /****************************************************************************
  82 turn a node status flags field into a string
  83 ****************************************************************************/
  84 static char *node_status_flags(unsigned char flags)
  85 {
  86         static fstring ret;
  87         fstrcpy(ret,"");
  88
  89         fstrcat(ret, (flags & 0x80) ? "<GROUP> " : "        ");
  90         if ((flags & 0x60) == 0x00) fstrcat(ret,"B ");
  91         if ((flags & 0x60) == 0x20) fstrcat(ret,"P ");
  92         if ((flags & 0x60) == 0x40) fstrcat(ret,"M ");
  93         if ((flags & 0x60) == 0x60) fstrcat(ret,"H ");
  94         if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> ");
  95         if (flags & 0x08) fstrcat(ret,"<CONFLICT> ");
  96         if (flags & 0x04) fstrcat(ret,"<ACTIVE> ");
  97         if (flags & 0x02) fstrcat(ret,"<PERMANENT> ");
  98
  99         return ret;
 100 }
 101
 102 /****************************************************************************
 103 do a node status query
 104 ****************************************************************************/
 105 static void do_node_status(int fd, char *name, int type, struct in_addr ip)
 106 {
 107         struct nmb_name nname;
 108         int count, i, j;
 109         struct node_status *status;
 110         fstring cleanname;
 111
 112         printf("Looking up status of %s\n",inet_ntoa(ip));
 113         make_nmb_name(&nname, name, type);
 114         status = node_status_query(fd,&nname,ip, &count);
 115         if (status) {
 116                 for (i=0;i<count;i++) {
 117                         fstrcpy(cleanname, status[i].name);
 118                         for (j=0;cleanname[j];j++) {
 119                                 if (!isprint((int)cleanname[j])) cleanname[j] = '.';
 120                         }
 121                         printf("\t%-15s <%02x> - %s\n",
 122                                cleanname,status[i].type,
 123                                node_status_flags(status[i].flags));
 124                 }
 125                 free(status);
 126         }
 127         printf("\n");
 128 }
 129
 130
 131 /****************************************************************************
 132 send out one query
 133 ****************************************************************************/
 134 static BOOL query_one(char *lookup, unsigned int lookup_type)
 135 {
 136         int j, count;
 137         struct in_addr *ip_list=NULL;
 138
 139         if (got_bcast) {
 140                 printf("querying %s on %s\n", lookup, inet_ntoa(bcast_addr));
 141                 ip_list = name_query(ServerFD,lookup,lookup_type,use_bcast,
 142                                      use_bcast?True:recursion_desired,
 143                                      bcast_addr,&count);
 144         } else {
 145                 struct in_addr *bcast;
 146                 for (j=iface_count() - 1;
 147                      !ip_list && j >= 0;
 148                      j--) {
 149                         bcast = iface_n_bcast(j);
 150                         printf("querying %s on %s\n",
 151                                lookup, inet_ntoa(*bcast));
 152                         ip_list = name_query(ServerFD,lookup,lookup_type,
 153                                              use_bcast,
 154                                              use_bcast?True:recursion_desired,
 155                                              *bcast,&count);
 156                 }
 157         }
 158
 159         if (!ip_list) return False;
 160
 161         for (j=0;j<count;j++) {
 162                 if (translate_addresses) {
 163                         struct hostent *host = gethostbyaddr((char *)&ip_list[j], sizeof(ip_list[j]), AF_INET);
 164                         if (host) {
 165                                 printf("%s, ", host -> h_name);
 166                         }
 167                 }
 168                 printf("%s %s<%02x>\n",inet_ntoa(ip_list[j]),lookup, lookup_type);
 169         }
 170
 171         /* We can only do find_status if the ip address returned
 172            was valid - ie. name_query returned true.
 173         */
 174         if (find_status) {
 175                 do_node_status(ServerFD, lookup, lookup_type, ip_list[0]);
 176         }
 177
 178         safe_free(ip_list);
 179
 180         return (ip_list != NULL);
 181 }
 182
 183
 184 /****************************************************************************
 185   main program
 186 ****************************************************************************/
 187 int main(int argc,char *argv[])
 188 {
 189   int opt;
 190   unsigned int lookup_type = 0x0;
 191   pstring lookup;
 192   extern int optind;
 193   extern char *optarg;
 194   BOOL find_master=False;
 195   int i;
 196   static pstring servicesf = CONFIGFILE;
 197   BOOL lookup_by_ip = False;
 198   int commandline_debuglevel = -2;
 199
 200   DEBUGLEVEL = 1;
 201   *lookup = 0;
 202
 203   TimeInit();
 204
 205   setup_logging(argv[0],True);
 206
 207   charset_initialise();
 208
 209   while ((opt = getopt(argc, argv, "d:B:U:i:s:SMrhART")) != EOF)
 210     switch (opt)
 211       {
 212       case 'B':
 213         bcast_addr = *interpret_addr2(optarg);
 214         got_bcast = True;
 215         use_bcast = True;
 216         break;
 217       case 'U':
 218         bcast_addr = *interpret_addr2(optarg);
 219         got_bcast = True;
 220         use_bcast = False;
 221         break;
 222       case 'T':
 223         translate_addresses = !translate_addresses;
 224         break;
 225       case 'i':
 226               {
 227                       extern pstring global_scope;
 228                       pstrcpy(global_scope,optarg);
 229                       strupper(global_scope);
 230               }
 231               break;
 232       case 'M':
 233         find_master = True;
 234         break;
 235       case 'S':
 236         find_status = True;
 237         break;
 238       case 'R':
 239         recursion_desired = True;
 240         break;
 241       case 'd':
 242         commandline_debuglevel = DEBUGLEVEL = atoi(optarg);
 243         break;
 244       case 's':
 245         pstrcpy(servicesf, optarg);
 246         break;
 247       case 'r':
 248         RootPort = True;
 249         break;
 250       case 'h':
 251         usage();
 252         exit(0);
 253         break;
 254       case 'A':
 255         lookup_by_ip = True;
 256         break;
 257       default:
 258         usage();
 259         exit(1);
 260       }
 261
 262   if (argc < 2) {
 263     usage();
 264     exit(1);
 265   }
 266
 267   if (!lp_load(servicesf,True,False,False)) {
 268     fprintf(stderr, "Can't load %s - run testparm to debug it\n", servicesf);
 269   }
 270
 271   /*
 272    * Ensure we reset DEBUGLEVEL if someone specified it
 273    * on the command line.
 274    */
 275
 276   if(commandline_debuglevel != -2)
 277     DEBUGLEVEL = commandline_debuglevel;
 278
 279   load_interfaces();
 280   if (!open_sockets()) return(1);
 281
 282   for (i=optind;i<argc;i++)
 283   {
 284       char *p;
 285       struct in_addr ip;
 286
 287       fstrcpy(lookup,argv[i]);
 288
 289       if(lookup_by_ip)
 290       {
 291         fstrcpy(lookup,"*");
 292         ip = *interpret_addr2(argv[i]);
 293         do_node_status(ServerFD, lookup, lookup_type, ip);
 294         continue;
 295       }
 296
 297       if (find_master) {
 298         if (*lookup == '-') {
 299           fstrcpy(lookup,"\01\02__MSBROWSE__\02");
 300           lookup_type = 1;
 301         } else {
 302           lookup_type = 0x1d;
 303         }
 304       }
 305
 306       p = strchr(lookup,'#');
 307       if (p) {
 308         *p = '\0';
 309         sscanf(++p,"%x",&lookup_type);
 310       }
 311
 312       if (!query_one(lookup, lookup_type)) {
 313         printf( "name_query failed to find name %s", lookup );
 314         if( 0 != lookup_type )
 315           printf( "#%02x", lookup_type );
 316         printf( "\n" );
 317       }
 318   }
 319
 320   return(0);
 321 }