source/utils/nmblookup.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    NBT client - used to lookup netbios names
   4    Copyright (C) Andrew Tridgell 1994-1998
   5    Copyright (C) Jelmer Vernooij 2003 (Conversion to popt)
   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 #include "includes.h"
  24
  25 extern BOOL AllowDebugChange;
  26
  27 static BOOL give_flags = False;
  28 static BOOL use_bcast = True;
  29 static BOOL got_bcast = False;
  30 static struct in_addr bcast_addr;
  31 static BOOL recursion_desired = False;
  32 static BOOL translate_addresses = False;
  33 static int ServerFD= -1;
  34 static int RootPort = False;
  35 static BOOL find_status=False;
  36
  37 /****************************************************************************
  38   open the socket communication
  39   **************************************************************************/
  40 static BOOL open_sockets(void)
  41 {
  42   ServerFD = open_socket_in( SOCK_DGRAM,
  43                              (RootPort ? 137 : 0),
  44                              (RootPort ?   0 : 3),
  45                              interpret_addr(lp_socket_address()), True );
  46
  47   if (ServerFD == -1)
  48     return(False);
  49
  50   set_socket_options( ServerFD, "SO_BROADCAST" );
  51
  52   DEBUG(3, ("Socket opened.\n"));
  53   return True;
  54 }
  55
  56 /****************************************************************************
  57 turn a node status flags field into a string
  58 ****************************************************************************/
  59 static char *node_status_flags(unsigned char flags)
  60 {
  61         static fstring ret;
  62         fstrcpy(ret,"");
  63
  64         fstrcat(ret, (flags & 0x80) ? "<GROUP> " : "        ");
  65         if ((flags & 0x60) == 0x00) fstrcat(ret,"B ");
  66         if ((flags & 0x60) == 0x20) fstrcat(ret,"P ");
  67         if ((flags & 0x60) == 0x40) fstrcat(ret,"M ");
  68         if ((flags & 0x60) == 0x60) fstrcat(ret,"H ");
  69         if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> ");
  70         if (flags & 0x08) fstrcat(ret,"<CONFLICT> ");
  71         if (flags & 0x04) fstrcat(ret,"<ACTIVE> ");
  72         if (flags & 0x02) fstrcat(ret,"<PERMANENT> ");
  73
  74         return ret;
  75 }
  76
  77 /****************************************************************************
  78 turn the NMB Query flags into a string
  79 ****************************************************************************/
  80 static char *query_flags(int flags)
  81 {
  82         static fstring ret1;
  83         fstrcpy(ret1, "");
  84
  85         if (flags & NM_FLAGS_RS) fstrcat(ret1, "Response ");
  86         if (flags & NM_FLAGS_AA) fstrcat(ret1, "Authoritative ");
  87         if (flags & NM_FLAGS_TC) fstrcat(ret1, "Truncated ");
  88         if (flags & NM_FLAGS_RD) fstrcat(ret1, "Recursion_Desired ");
  89         if (flags & NM_FLAGS_RA) fstrcat(ret1, "Recursion_Available ");
  90         if (flags & NM_FLAGS_B)  fstrcat(ret1, "Broadcast ");
  91
  92         return ret1;
  93 }
  94
  95 /****************************************************************************
  96 do a node status query
  97 ****************************************************************************/
  98 static void do_node_status(int fd, const char *name, int type, struct in_addr ip)
  99 {
 100         struct nmb_name nname;
 101         int count, i, j;
 102         NODE_STATUS_STRUCT *status;
 103         struct node_status_extra extra;
 104         fstring cleanname;
 105
 106         d_printf("Looking up status of %s\n",inet_ntoa(ip));
 107         make_nmb_name(&nname, name, type);
 108         status = node_status_query(fd,&nname,ip, &count, &extra);
 109         if (status) {
 110                 for (i=0;i<count;i++) {
 111                         pull_ascii_fstring(cleanname, status[i].name);
 112                         for (j=0;cleanname[j];j++) {
 113                                 if (!isprint((int)cleanname[j])) cleanname[j] = '.';
 114                         }
 115                         d_printf("\t%-15s <%02x> - %s\n",
 116                                cleanname,status[i].type,
 117                                node_status_flags(status[i].flags));
 118                 }
 119                 d_printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
 120                                 extra.mac_addr[0], extra.mac_addr[1],
 121                                 extra.mac_addr[2], extra.mac_addr[3],
 122                                 extra.mac_addr[4], extra.mac_addr[5]);
 123                 d_printf("\n");
 124                 SAFE_FREE(status);
 125         } else {
 126                 d_printf("No reply from %s\n\n",inet_ntoa(ip));
 127         }
 128 }
 129
 130
 131 /****************************************************************************
 132 send out one query
 133 ****************************************************************************/
 134 static BOOL query_one(const char *lookup, unsigned int lookup_type)
 135 {
 136         int j, count, flags = 0;
 137         struct in_addr *ip_list=NULL;
 138
 139         if (got_bcast) {
 140                 d_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, &flags, NULL);
 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                         d_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, &flags, NULL);
 156                 }
 157         }
 158
 159         if (!ip_list) return False;
 160
 161         if (give_flags)
 162           d_printf("Flags: %s\n", query_flags(flags));
 163
 164         for (j=0;j<count;j++) {
 165                 if (translate_addresses) {
 166                         struct hostent *host = gethostbyaddr((char *)&ip_list[j], sizeof(ip_list[j]), AF_INET);
 167                         if (host) {
 168                                 d_printf("%s, ", host -> h_name);
 169                         }
 170                 }
 171                 d_printf("%s %s<%02x>\n",inet_ntoa(ip_list[j]),lookup, lookup_type);
 172                 /* We can only do find_status if the ip address returned
 173                    was valid - ie. name_query returned true.
 174                  */
 175                 if (find_status) {
 176                         do_node_status(ServerFD, lookup, lookup_type, ip_list[j]);
 177                 }
 178         }
 179
 180         safe_free(ip_list);
 181
 182         return (ip_list != NULL);
 183 }
 184
 185
 186 /****************************************************************************
 187   main program
 188 ****************************************************************************/
 189 int main(int argc,char *argv[])
 190 {
 191   int opt;
 192   unsigned int lookup_type = 0x0;
 193   fstring lookup;
 194   static BOOL find_master=False;
 195   static BOOL lookup_by_ip = False;
 196   poptContext pc;
 197
 198   struct poptOption long_options[] = {
 199           POPT_AUTOHELP
 200           { "broadcast", 'B', POPT_ARG_STRING, NULL, 'B', "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
 201           { "flags", 'f', POPT_ARG_VAL, &give_flags, True, "List the NMB flags returned" },
 202           { "unicast", 'U', POPT_ARG_STRING, NULL, 'U', "Specify address to use for unicast" },
 203           { "master-browser", 'M', POPT_ARG_VAL, &find_master, True, "Search for a master browser" },
 204           { "recursion", 'R', POPT_ARG_VAL, &recursion_desired, True, "Set recursion desired in package" },
 205           { "status", 'S', POPT_ARG_VAL, &find_status, True, "Lookup node status as well" },
 206           { "translate", 'T', POPT_ARG_NONE, NULL, 'T', "Translate IP addresses into names" },
 207           { "root-port", 'r', POPT_ARG_VAL, &RootPort, True, "Use root port 137 (Win95 only replies to this)" },
 208           { "lookup-by-ip", 'A', POPT_ARG_VAL, &lookup_by_ip, True, "Do a node status on <name> as an IP Address" },
 209           POPT_COMMON_SAMBA
 210           POPT_COMMON_CONNECTION
 211           { 0, 0, 0, 0 }
 212   };
 213
 214   *lookup = 0;
 215
 216   load_case_tables();
 217
 218   setup_logging(argv[0],True);
 219
 220   pc = poptGetContext("nmblookup", argc, (const char **)argv, long_options,
 221                                           POPT_CONTEXT_KEEP_FIRST);
 222
 223   poptSetOtherOptionHelp(pc, "<NODE> ...");
 224
 225   while ((opt = poptGetNextOpt(pc)) != -1) {
 226           switch (opt) {
 227           case 'B':
 228                   bcast_addr = *interpret_addr2(poptGetOptArg(pc));
 229                   got_bcast = True;
 230                   use_bcast = True;
 231                   break;
 232           case 'U':
 233                   bcast_addr = *interpret_addr2(poptGetOptArg(pc));
 234                   got_bcast = True;
 235                   use_bcast = False;
 236                   break;
 237           case 'T':
 238                   translate_addresses = !translate_addresses;
 239                   break;
 240           }
 241   }
 242
 243   poptGetArg(pc); /* Remove argv[0] */
 244
 245   if(!poptPeekArg(pc)) {
 246           poptPrintUsage(pc, stderr, 0);
 247           exit(1);
 248   }
 249
 250   if (!lp_load(dyn_CONFIGFILE,True,False,False,True)) {
 251           fprintf(stderr, "Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
 252   }
 253
 254   load_interfaces();
 255   if (!open_sockets()) return(1);
 256
 257   while(poptPeekArg(pc))
 258   {
 259           char *p;
 260           struct in_addr ip;
 261
 262           fstrcpy(lookup,poptGetArg(pc));
 263
 264           if(lookup_by_ip)
 265           {
 266                   ip = *interpret_addr2(lookup);
 267                   fstrcpy(lookup,"*");
 268                   do_node_status(ServerFD, lookup, lookup_type, ip);
 269                   continue;
 270           }
 271
 272           if (find_master) {
 273                   if (*lookup == '-') {
 274                           fstrcpy(lookup,"\01\02__MSBROWSE__\02");
 275                           lookup_type = 1;
 276                   } else {
 277                           lookup_type = 0x1d;
 278                   }
 279           }
 280
 281           p = strchr_m(lookup,'#');
 282           if (p) {
 283                   *p = '\0';
 284                   sscanf(++p,"%x",&lookup_type);
 285           }
 286
 287           if (!query_one(lookup, lookup_type)) {
 288                   d_printf( "name_query failed to find name %s", lookup );
 289                   if( 0 != lookup_type )
 290                           d_printf( "#%02x", lookup_type );
 291                   d_printf( "\n" );
 292           }
 293   }
 294
 295   poptFreeContext(pc);
 296
 297   return(0);
 298 }