source/utils/nmblookup.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    NBT client - used to lookup netbios names
   5
   6    Copyright (C) Andrew Tridgell 1994-2005
   7    Copyright (C) Jelmer Vernooij 2003 (Conversion to popt)
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 */
  23
  24 #include "includes.h"
  25 #include "lib/cmdline/popt_common.h"
  26 #include "lib/socket/socket.h"
  27 #include "system/network.h"
  28 #include "system/locale.h"
  29 #include "lib/socket/netif.h"
  30 #include "librpc/gen_ndr/nbt.h"
  31 #include "libcli/nbt/libnbt.h"
  32 #include "param/param.h"
  33
  34 /* command line options */
  35 static struct {
  36         const char *broadcast_address;
  37         const char *unicast_address;
  38         bool find_master;
  39         bool wins_lookup;
  40         bool node_status;
  41         bool root_port;
  42         bool lookup_by_ip;
  43         bool case_sensitive;
  44 } options;
  45
  46 /*
  47   clean any binary from a node name
  48 */
  49 static const char *clean_name(TALLOC_CTX *mem_ctx, const char *name)
  50 {
  51         char *ret = talloc_strdup(mem_ctx, name);
  52         int i;
  53         for (i=0;ret[i];i++) {
  54                 if (!isprint((unsigned char)ret[i])) ret[i] = '.';
  55         }
  56         return ret;
  57 }
  58
  59 /*
  60   turn a node status flags field into a string
  61 */
  62 static char *node_status_flags(TALLOC_CTX *mem_ctx, uint16_t flags)
  63 {
  64         char *ret;
  65         const char *group = "       ";
  66         const char *type = "B";
  67
  68         if (flags & NBT_NM_GROUP) {
  69                 group = "<GROUP>";
  70         }
  71
  72         switch (flags & NBT_NM_OWNER_TYPE) {
  73         case NBT_NODE_B:
  74                 type = "B";
  75                 break;
  76         case NBT_NODE_P:
  77                 type = "P";
  78                 break;
  79         case NBT_NODE_M:
  80                 type = "M";
  81                 break;
  82         case NBT_NODE_H:
  83                 type = "H";
  84                 break;
  85         }
  86
  87         ret = talloc_asprintf(mem_ctx, "%s %s", group, type);
  88
  89         if (flags & NBT_NM_DEREGISTER) {
  90                 ret = talloc_asprintf_append_buffer(ret, " <DEREGISTERING>");
  91         }
  92         if (flags & NBT_NM_CONFLICT) {
  93                 ret = talloc_asprintf_append_buffer(ret, " <CONFLICT>");
  94         }
  95         if (flags & NBT_NM_ACTIVE) {
  96                 ret = talloc_asprintf_append_buffer(ret, " <ACTIVE>");
  97         }
  98         if (flags & NBT_NM_PERMANENT) {
  99                 ret = talloc_asprintf_append_buffer(ret, " <PERMANENT>");
 100         }
 101
 102         return ret;
 103 }
 104
 105 /* do a single node status */
 106 static bool do_node_status(struct nbt_name_socket *nbtsock,
 107                            const char *addr)
 108 {
 109         struct nbt_name_status io;
 110         NTSTATUS status;
 111
 112         io.in.name.name = "*";
 113         io.in.name.type = NBT_NAME_CLIENT;
 114         io.in.name.scope = NULL;
 115         io.in.dest_addr = addr;
 116         io.in.timeout = 1;
 117         io.in.retries = 2;
 118
 119         status = nbt_name_status(nbtsock, nbtsock, &io);
 120         if (NT_STATUS_IS_OK(status)) {
 121                 int i;
 122                 printf("Node status reply from %s\n",
 123                        io.out.reply_from);
 124                 for (i=0;i<io.out.status.num_names;i++) {
 125                         d_printf("\t%-16s <%02x>  %s\n",
 126                                  clean_name(nbtsock, io.out.status.names[i].name),
 127                                  io.out.status.names[i].type,
 128                                  node_status_flags(nbtsock, io.out.status.names[i].nb_flags));
 129                 }
 130                 printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
 131                        io.out.status.statistics.unit_id[0],
 132                        io.out.status.statistics.unit_id[1],
 133                        io.out.status.statistics.unit_id[2],
 134                        io.out.status.statistics.unit_id[3],
 135                        io.out.status.statistics.unit_id[4],
 136                        io.out.status.statistics.unit_id[5]);
 137                 return true;
 138         }
 139
 140         return false;
 141 }
 142
 143 /* do a single node query */
 144 static NTSTATUS do_node_query(struct nbt_name_socket *nbtsock,
 145                               const char *addr,
 146                               uint16_t port,
 147                               const char *node_name,
 148                               enum nbt_name_type node_type,
 149                               bool broadcast)
 150 {
 151         struct nbt_name_query io;
 152         NTSTATUS status;
 153         int i;
 154
 155         io.in.name.name = node_name;
 156         io.in.name.type = node_type;
 157         io.in.name.scope = NULL;
 158         io.in.dest_addr = addr;
 159         io.in.dest_port = port;
 160         io.in.broadcast = broadcast;
 161         io.in.wins_lookup = options.wins_lookup;
 162         io.in.timeout = 1;
 163         io.in.retries = 2;
 164
 165         status = nbt_name_query(nbtsock, nbtsock, &io);
 166         NT_STATUS_NOT_OK_RETURN(status);
 167
 168         for (i=0;i<io.out.num_addrs;i++) {
 169                 printf("%s %s<%02x>\n",
 170                        io.out.reply_addrs[i],
 171                        io.out.name.name,
 172                        io.out.name.type);
 173         }
 174         if (options.node_status && io.out.num_addrs > 0) {
 175                 do_node_status(nbtsock, io.out.reply_addrs[0]);
 176         }
 177
 178         return status;
 179 }
 180
 181
 182 static bool process_one(const char *name, int nbt_port)
 183 {
 184         TALLOC_CTX *tmp_ctx = talloc_new(NULL);
 185         enum nbt_name_type node_type = NBT_NAME_CLIENT;
 186         char *node_name, *p;
 187         struct socket_address *all_zero_addr;
 188         struct nbt_name_socket *nbtsock;
 189         NTSTATUS status = NT_STATUS_OK;
 190         bool ret = true;
 191
 192         if (!options.case_sensitive) {
 193                 name = strupper_talloc(tmp_ctx, name);
 194         }
 195
 196         if (options.find_master) {
 197                 node_type = NBT_NAME_MASTER;
 198                 if (*name == '-' || *name == '_') {
 199                         name = "\01\02__MSBROWSE__\02";
 200                         node_type = NBT_NAME_MS;
 201                 }
 202         }
 203
 204         p = strchr(name, '#');
 205         if (p) {
 206                 node_name = talloc_strndup(tmp_ctx, name, PTR_DIFF(p,name));
 207                 node_type = (enum nbt_name_type)strtol(p+1, NULL, 16);
 208         } else {
 209                 node_name = talloc_strdup(tmp_ctx, name);
 210         }
 211
 212         nbtsock = nbt_name_socket_init(tmp_ctx, NULL);
 213
 214         if (options.root_port) {
 215                 all_zero_addr = socket_address_from_strings(tmp_ctx, nbtsock->sock->backend_name,
 216                                                             "0.0.0.0", NBT_NAME_SERVICE_PORT);
 217
 218                 if (!all_zero_addr) {
 219                         talloc_free(tmp_ctx);
 220                         return false;
 221                 }
 222
 223                 status = socket_listen(nbtsock->sock, all_zero_addr, 0, 0);
 224                 if (!NT_STATUS_IS_OK(status)) {
 225                         printf("Failed to bind to local port 137 - %s\n", nt_errstr(status));
 226                         talloc_free(tmp_ctx);
 227                         return false;
 228                 }
 229         }
 230
 231         if (options.lookup_by_ip) {
 232                 ret = do_node_status(nbtsock, name);
 233                 talloc_free(tmp_ctx);
 234                 return ret;
 235         }
 236
 237         if (options.broadcast_address) {
 238                 status = do_node_query(nbtsock, options.broadcast_address, nbt_port,
 239                                        node_name, node_type, true);
 240         } else if (options.unicast_address) {
 241                 status = do_node_query(nbtsock, options.unicast_address,
 242                                        nbt_port, node_name, node_type, false);
 243         } else {
 244                 int i, num_interfaces = iface_count(global_loadparm);
 245                 for (i=0;i<num_interfaces;i++) {
 246                         const char *bcast = iface_n_bcast(global_loadparm, i);
 247                         if (bcast == NULL) continue;
 248                         status = do_node_query(nbtsock, bcast, nbt_port,
 249                                                node_name, node_type, true);
 250                         if (NT_STATUS_IS_OK(status)) break;
 251                 }
 252         }
 253
 254         if (!NT_STATUS_IS_OK(status)) {
 255                 printf("Lookup failed - %s\n", nt_errstr(status));
 256                 ret = false;
 257         }
 258
 259         talloc_free(tmp_ctx);
 260         return ret;
 261 }
 262
 263 /*
 264   main program
 265 */
 266 int main(int argc, const char *argv[])
 267 {
 268         bool ret = true;
 269         poptContext pc;
 270         int opt;
 271         enum {
 272                 OPT_BROADCAST_ADDRESS   = 1000,
 273                 OPT_UNICAST_ADDRESS,
 274                 OPT_FIND_MASTER,
 275                 OPT_WINS_LOOKUP,
 276                 OPT_NODE_STATUS,
 277                 OPT_ROOT_PORT,
 278                 OPT_LOOKUP_BY_IP,
 279                 OPT_CASE_SENSITIVE
 280         };
 281         struct poptOption long_options[] = {
 282                 POPT_AUTOHELP
 283                 { "broadcast", 'B', POPT_ARG_STRING, NULL, OPT_BROADCAST_ADDRESS,
 284                   "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
 285
 286                 { "unicast", 'U', POPT_ARG_STRING, NULL, OPT_UNICAST_ADDRESS,
 287                   "Specify address to use for unicast", NULL },
 288
 289                 { "master-browser", 'M', POPT_ARG_NONE, NULL, OPT_FIND_MASTER,
 290                   "Search for a master browser", NULL },
 291
 292                 { "wins", 'W', POPT_ARG_NONE, NULL, OPT_WINS_LOOKUP,
 293                   "Do a WINS lookup", NULL },
 294
 295                 { "status", 'S', POPT_ARG_NONE, NULL, OPT_NODE_STATUS,
 296                   "Lookup node status as well", NULL },
 297
 298                 { "root-port", 'r', POPT_ARG_NONE, NULL, OPT_ROOT_PORT,
 299                   "Use root port 137 (Win95 only replies to this)", NULL },
 300
 301                 { "lookup-by-ip", 'A', POPT_ARG_NONE, NULL, OPT_LOOKUP_BY_IP,
 302                   "Do a node status on <name> as an IP Address", NULL },
 303
 304                 { "case-sensitive", 0, POPT_ARG_NONE, NULL, OPT_CASE_SENSITIVE,
 305                   "Don't uppercase the name before sending", NULL },
 306
 307                 POPT_COMMON_SAMBA
 308                 { 0, 0, 0, 0 }
 309         };
 310
 311         pc = poptGetContext("nmblookup", argc, argv, long_options,
 312                             POPT_CONTEXT_KEEP_FIRST);
 313
 314         poptSetOtherOptionHelp(pc, "<NODE> ...");
 315
 316         while ((opt = poptGetNextOpt(pc)) != -1) {
 317                 switch(opt) {
 318                 case OPT_BROADCAST_ADDRESS:
 319                         options.broadcast_address = poptGetOptArg(pc);
 320                         break;
 321                 case OPT_UNICAST_ADDRESS:
 322                         options.unicast_address = poptGetOptArg(pc);
 323                         break;
 324                 case OPT_FIND_MASTER:
 325                         options.find_master = true;
 326                         break;
 327                 case OPT_WINS_LOOKUP:
 328                         options.wins_lookup = true;
 329                         break;
 330                 case OPT_NODE_STATUS:
 331                         options.node_status = true;
 332                         break;
 333                 case OPT_ROOT_PORT:
 334                         options.root_port = true;
 335                         break;
 336                 case OPT_LOOKUP_BY_IP:
 337                         options.lookup_by_ip = true;
 338                         break;
 339                 case OPT_CASE_SENSITIVE:
 340                         options.case_sensitive = true;
 341                         break;
 342                 }
 343         }
 344
 345         /* swallow argv[0] */
 346         poptGetArg(pc);
 347
 348         if(!poptPeekArg(pc)) {
 349                 poptPrintUsage(pc, stderr, 0);
 350                 exit(1);
 351         }
 352
 353         while (poptPeekArg(pc)) {
 354                 const char *name = poptGetArg(pc);
 355
 356                 ret &= process_one(name, lp_nbt_port(global_loadparm));
 357         }
 358
 359         poptFreeContext(pc);
 360
 361         if (!ret) {
 362                 return 1;
 363         }
 364
 365         return 0;
 366 }