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 #define NO_SYSLOG
  24
  25 #include "includes.h"
  26
  27 extern BOOL AllowDebugChange;
  28
  29 static BOOL give_flags = False;
  30 static BOOL use_bcast = True;
  31 static BOOL got_bcast = False;
  32 static struct in_addr bcast_addr;
  33 static BOOL recursion_desired = False;
  34 static BOOL translate_addresses = False;
  35 static int ServerFD= -1;
  36 static int RootPort = False;
  37 static BOOL find_status=False;
  38
  39 /****************************************************************************
  40   open the socket communication
  41   **************************************************************************/
  42 static BOOL open_sockets(void)
  43 {
  44   ServerFD = open_socket_in( SOCK_DGRAM,
  45                              (RootPort ? 137 : 0),
  46                              (RootPort ?   0 : 3),
  47                              interpret_addr(lp_socket_address()), True );
  48
  49   if (ServerFD == -1)
  50     return(False);
  51
  52   set_socket_options( ServerFD, "SO_BROADCAST" );
  53
  54   DEBUG(3, ("Socket opened.\n"));
  55   return True;
  56 }
  57
  58 /****************************************************************************
  59 turn a node status flags field into a string
  60 ****************************************************************************/
  61 static char *node_status_flags(unsigned char flags)
  62 {
  63         static fstring ret;
  64         fstrcpy(ret,"");
  65
  66         fstrcat(ret, (flags & 0x80) ? "<GROUP> " : "        ");
  67         if ((flags & 0x60) == 0x00) fstrcat(ret,"B ");
  68         if ((flags & 0x60) == 0x20) fstrcat(ret,"P ");
  69         if ((flags & 0x60) == 0x40) fstrcat(ret,"M ");
  70         if ((flags & 0x60) == 0x60) fstrcat(ret,"H ");
  71         if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> ");
  72         if (flags & 0x08) fstrcat(ret,"<CONFLICT> ");
  73         if (flags & 0x04) fstrcat(ret,"<ACTIVE> ");
  74         if (flags & 0x02) fstrcat(ret,"<PERMANENT> ");
  75
  76         return ret;
  77 }
  78
  79 /****************************************************************************
  80 turn the NMB Query flags into a string
  81 ****************************************************************************/
  82 static char *query_flags(int flags)
  83 {
  84         static fstring ret1;
  85         fstrcpy(ret1, "");
  86
  87         if (flags & NM_FLAGS_RS) fstrcat(ret1, "Response ");
  88         if (flags & NM_FLAGS_AA) fstrcat(ret1, "Authoritative ");
  89         if (flags & NM_FLAGS_TC) fstrcat(ret1, "Truncated ");
  90         if (flags & NM_FLAGS_RD) fstrcat(ret1, "Recursion_Desired ");
  91         if (flags & NM_FLAGS_RA) fstrcat(ret1, "Recursion_Available ");
  92         if (flags & NM_FLAGS_B)  fstrcat(ret1, "Broadcast ");
  93
  94         return ret1;
  95 }
  96
  97 /****************************************************************************
  98 do a node status query
  99 ****************************************************************************/
 100 static void do_node_status(int fd, const char *name, int type, struct in_addr ip)
 101 {
 102         struct nmb_name nname;
 103         int count, i, j;
 104         struct node_status *status;
 105         fstring cleanname;
 106
 107         d_printf("Looking up status of %s\n",inet_ntoa(ip));
 108         make_nmb_name(&nname, name, type);
 109         status = node_status_query(fd,&nname,ip, &count);
 110         if (status) {
 111                 for (i=0;i<count;i++) {
 112                         pull_ascii_fstring(cleanname, status[i].name);
 113                         for (j=0;cleanname[j];j++) {
 114                                 if (!isprint((int)cleanname[j])) cleanname[j] = '.';
 115                         }
 116                         d_printf("\t%-15s <%02x> - %s\n",
 117                                cleanname,status[i].type,
 118                                node_status_flags(status[i].flags));
 119                 }
 120                 SAFE_FREE(status);
 121         }
 122         d_printf("\n");
 123 }
 124
 125
 126 /****************************************************************************
 127 send out one query
 128 ****************************************************************************/
 129 static BOOL query_one(const char *lookup, unsigned int lookup_type)
 130 {
 131         int j, count, flags = 0;
 132         struct in_addr *ip_list=NULL;
 133
 134         if (got_bcast) {
 135                 d_printf("querying %s on %s\n", lookup, inet_ntoa(bcast_addr));
 136                 ip_list = name_query(ServerFD,lookup,lookup_type,use_bcast,
 137                                      use_bcast?True:recursion_desired,
 138                                      bcast_addr,&count, &flags, NULL);
 139         } else {
 140                 struct in_addr *bcast;
 141                 for (j=iface_count() - 1;
 142                      !ip_list && j >= 0;
 143                      j--) {
 144                         bcast = iface_n_bcast(j);
 145                         d_printf("querying %s on %s\n",
 146                                lookup, inet_ntoa(*bcast));
 147                         ip_list = name_query(ServerFD,lookup,lookup_type,
 148                                              use_bcast,
 149                                              use_bcast?True:recursion_desired,
 150                                              *bcast,&count, &flags, NULL);
 151                 }
 152         }
 153
 154         if (!ip_list) return False;
 155
 156         if (give_flags)
 157           d_printf("Flags: %s\n", query_flags(flags));
 158
 159         for (j=0;j<count;j++) {
 160                 if (translate_addresses) {
 161                         struct hostent *host = gethostbyaddr((char *)&ip_list[j], sizeof(ip_list[j]), AF_INET);
 162                         if (host) {
 163                                 d_printf("%s, ", host -> h_name);
 164                         }
 165                 }
 166                 d_printf("%s %s<%02x>\n",inet_ntoa(ip_list[j]),lookup, lookup_type);
 167         }
 168
 169         /* We can only do find_status if the ip address returned
 170            was valid - ie. name_query returned true.
 171         */
 172         if (find_status) {
 173                 do_node_status(ServerFD, lookup, lookup_type, ip_list[0]);
 174         }
 175
 176         safe_free(ip_list);
 177
 178         return (ip_list != NULL);
 179 }
 180
 181
 182 /****************************************************************************
 183   main program
 184 ****************************************************************************/
 185 int main(int argc,char *argv[])
 186 {
 187   int opt;
 188   unsigned int lookup_type = 0x0;
 189   fstring lookup;
 190   static BOOL find_master=False;
 191   static BOOL lookup_by_ip = False;
 192   poptContext pc;
 193
 194   struct poptOption long_options[] = {
 195           POPT_AUTOHELP
 196           { "broadcast", 'B', POPT_ARG_STRING, NULL, 'B', "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
 197           { "flags", 'f', POPT_ARG_VAL, &give_flags, True, "List the NMB flags returned" },
 198           { "unicast", 'U', POPT_ARG_STRING, NULL, 'U', "Specify address to use for unicast" },
 199           { "master-browser", 'M', POPT_ARG_VAL, &find_master, True, "Search for a master browser" },
 200           { "recursion", 'R', POPT_ARG_VAL, &recursion_desired, True, "Set recursion desired in package" },
 201           { "status", 'S', POPT_ARG_VAL, &find_status, True, "Lookup node status as well" },
 202           { "translate", 'T', POPT_ARG_NONE, NULL, 'T', "Translate IP addresses into names" },
 203           { "root-port", 'r', POPT_ARG_VAL, &RootPort, True, "Use root port 137 (Win95 only replies to this)" },
 204           { "lookup-by-ip", 'A', POPT_ARG_VAL, &lookup_by_ip, True, "Do a node status on <name> as an IP Address" },
 205           POPT_COMMON_SAMBA
 206           POPT_COMMON_CONNECTION
 207           { 0, 0, 0, 0 }
 208   };
 209
 210   *lookup = 0;
 211
 212   setup_logging(argv[0],True);
 213
 214   pc = poptGetContext("nmblookup", argc, (const char **)argv, long_options,
 215                                           POPT_CONTEXT_KEEP_FIRST);
 216
 217   poptSetOtherOptionHelp(pc, "<NODE> ...");
 218
 219   while ((opt = poptGetNextOpt(pc)) != -1) {
 220           switch (opt) {
 221           case 'B':
 222                   bcast_addr = *interpret_addr2(poptGetOptArg(pc));
 223                   got_bcast = True;
 224                   use_bcast = True;
 225                   break;
 226           case 'U':
 227                   bcast_addr = *interpret_addr2(poptGetOptArg(pc));
 228                   got_bcast = True;
 229                   use_bcast = False;
 230                   break;
 231           case 'T':
 232                   translate_addresses = !translate_addresses;
 233                   break;
 234           }
 235   }
 236
 237   poptGetArg(pc); /* Remove argv[0] */
 238
 239   if(!poptPeekArg(pc)) {
 240           poptPrintUsage(pc, stderr, 0);
 241           exit(1);
 242   }
 243
 244   if (!lp_load(dyn_CONFIGFILE,True,False,False)) {
 245           fprintf(stderr, "Can't load %s - run testparm to debug it\n", dyn_CONFIGFILE);
 246   }
 247
 248   load_interfaces();
 249   if (!open_sockets()) return(1);
 250
 251   while(poptPeekArg(pc))
 252   {
 253           char *p;
 254           struct in_addr ip;
 255
 256           fstrcpy(lookup,poptGetArg(pc));
 257
 258           if(lookup_by_ip)
 259           {
 260                   ip = *interpret_addr2(lookup);
 261                   fstrcpy(lookup,"*");
 262                   do_node_status(ServerFD, lookup, lookup_type, ip);
 263                   continue;
 264           }
 265
 266           if (find_master) {
 267                   if (*lookup == '-') {
 268                           fstrcpy(lookup,"\01\02__MSBROWSE__\02");
 269                           lookup_type = 1;
 270                   } else {
 271                           lookup_type = 0x1d;
 272                   }
 273           }
 274
 275           p = strchr_m(lookup,'#');
 276           if (p) {
 277                   *p = '\0';
 278                   sscanf(++p,"%x",&lookup_type);
 279           }
 280
 281           if (!query_one(lookup, lookup_type)) {
 282                   d_printf( "name_query failed to find name %s", lookup );
 283                   if( 0 != lookup_type )
 284                           d_printf( "#%02x", lookup_type );
 285                   d_printf( "\n" );
 286           }
 287   }
 288
 289   poptFreeContext(pc);
 290
 291   return(0);
 292 }