libcli/nbt/tools/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 "lib/events/events.h"
  28 #include "system/network.h"
  29 #include "system/locale.h"
  30 #include "lib/socket/netif.h"
  31 #include "librpc/gen_ndr/nbt.h"
  32 #include "../libcli/nbt/libnbt.h"
  33 #include "param/param.h"
  34
  35 /* command line options */
  36 static struct {
  37         const char *broadcast_address;
  38         const char *unicast_address;
  39         bool find_master;
  40         bool wins_lookup;
  41         bool node_status;
  42         bool root_port;
  43         bool lookup_by_ip;
  44         bool case_sensitive;
  45 } options;
  46
  47 /*
  48   clean any binary from a node name
  49 */
  50 static const char *clean_name(TALLOC_CTX *mem_ctx, const char *name)
  51 {
  52         char *ret = talloc_strdup(mem_ctx, name);
  53         int i;
  54         for (i=0;ret[i];i++) {
  55                 if (!isprint((unsigned char)ret[i])) ret[i] = '.';
  56         }
  57         return ret;
  58 }
  59
  60 /*
  61   turn a node status flags field into a string
  62 */
  63 static char *node_status_flags(TALLOC_CTX *mem_ctx, uint16_t flags)
  64 {
  65         char *ret;
  66         const char *group = "       ";
  67         const char *type = "B";
  68
  69         if (flags & NBT_NM_GROUP) {
  70                 group = "<GROUP>";
  71         }
  72
  73         switch (flags & NBT_NM_OWNER_TYPE) {
  74         case NBT_NODE_B:
  75                 type = "B";
  76                 break;
  77         case NBT_NODE_P:
  78                 type = "P";
  79                 break;
  80         case NBT_NODE_M:
  81                 type = "M";
  82                 break;
  83         case NBT_NODE_H:
  84                 type = "H";
  85                 break;
  86         }
  87
  88         ret = talloc_asprintf(mem_ctx, "%s %s", group, type);
  89
  90         if (flags & NBT_NM_DEREGISTER) {
  91                 ret = talloc_asprintf_append_buffer(ret, " <DEREGISTERING>");
  92         }
  93         if (flags & NBT_NM_CONFLICT) {
  94                 ret = talloc_asprintf_append_buffer(ret, " <CONFLICT>");
  95         }
  96         if (flags & NBT_NM_ACTIVE) {
  97                 ret = talloc_asprintf_append_buffer(ret, " <ACTIVE>");
  98         }
  99         if (flags & NBT_NM_PERMANENT) {
 100                 ret = talloc_asprintf_append_buffer(ret, " <PERMANENT>");
 101         }
 102
 103         return ret;
 104 }
 105
 106 /* do a single node status */
 107 static bool do_node_status(struct nbt_name_socket *nbtsock,
 108                            const char *addr, uint16_t port)
 109 {
 110         struct nbt_name_status io;
 111         NTSTATUS status;
 112
 113         io.in.name.name = "*";
 114         io.in.name.type = NBT_NAME_CLIENT;
 115         io.in.name.scope = NULL;
 116         io.in.dest_addr = addr;
 117         io.in.dest_port = port;
 118         io.in.timeout = 1;
 119         io.in.retries = 2;
 120
 121         status = nbt_name_status(nbtsock, nbtsock, &io);
 122         if (NT_STATUS_IS_OK(status)) {
 123                 int i;
 124                 printf("Node status reply from %s\n",
 125                        io.out.reply_from);
 126                 for (i=0;i<io.out.status.num_names;i++) {
 127                         d_printf("\t%-16s <%02x>  %s\n",
 128                                  clean_name(nbtsock, io.out.status.names[i].name),
 129                                  io.out.status.names[i].type,
 130                                  node_status_flags(nbtsock, io.out.status.names[i].nb_flags));
 131                 }
 132                 printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
 133                        io.out.status.statistics.unit_id[0],
 134                        io.out.status.statistics.unit_id[1],
 135                        io.out.status.statistics.unit_id[2],
 136                        io.out.status.statistics.unit_id[3],
 137                        io.out.status.statistics.unit_id[4],
 138                        io.out.status.statistics.unit_id[5]);
 139                 return true;
 140         }
 141
 142         return false;
 143 }
 144
 145 /* do a single node query */
 146 static NTSTATUS do_node_query(struct nbt_name_socket *nbtsock,
 147                               const char *addr,
 148                               uint16_t port,
 149                               const char *node_name,
 150                               enum nbt_name_type node_type,
 151                               bool broadcast)
 152 {
 153         struct nbt_name_query io;
 154         NTSTATUS status;
 155         int i;
 156
 157         io.in.name.name = node_name;
 158         io.in.name.type = node_type;
 159         io.in.name.scope = NULL;
 160         io.in.dest_addr = addr;
 161         io.in.dest_port = port;
 162         io.in.broadcast = broadcast;
 163         io.in.wins_lookup = options.wins_lookup;
 164         io.in.timeout = 1;
 165         io.in.retries = 2;
 166
 167         status = nbt_name_query(nbtsock, nbtsock, &io);
 168         NT_STATUS_NOT_OK_RETURN(status);
 169
 170         for (i=0;i<io.out.num_addrs;i++) {
 171                 printf("%s %s<%02x>\n",
 172                        io.out.reply_addrs[i],
 173                        io.out.name.name,
 174                        io.out.name.type);
 175         }
 176         if (options.node_status && io.out.num_addrs > 0) {
 177                 do_node_status(nbtsock, io.out.reply_addrs[0], port);
 178         }
 179
 180         return status;
 181 }
 182
 183
 184 static bool process_one(struct loadparm_context *lp_ctx, struct tevent_context *ev,
 185                         struct interface *ifaces, const char *name, int nbt_port)
 186 {
 187         TALLOC_CTX *tmp_ctx = talloc_new(NULL);
 188         enum nbt_name_type node_type = NBT_NAME_CLIENT;
 189         char *node_name, *p;
 190         struct socket_address *all_zero_addr;
 191         struct nbt_name_socket *nbtsock;
 192         NTSTATUS status = NT_STATUS_OK;
 193         bool ret = true;
 194
 195         if (!options.case_sensitive) {
 196                 name = strupper_talloc(tmp_ctx, name);
 197         }
 198
 199         if (options.find_master) {
 200                 node_type = NBT_NAME_MASTER;
 201                 if (*name == '-' || *name == '_') {
 202                         name = "\01\02__MSBROWSE__\02";
 203                         node_type = NBT_NAME_MS;
 204                 }
 205         }
 206
 207         p = strchr(name, '#');
 208         if (p) {
 209                 node_name = talloc_strndup(tmp_ctx, name, PTR_DIFF(p,name));
 210                 node_type = (enum nbt_name_type)strtol(p+1, NULL, 16);
 211         } else {
 212                 node_name = talloc_strdup(tmp_ctx, name);
 213         }
 214
 215         nbtsock = nbt_name_socket_init(tmp_ctx, ev);
 216
 217         if (options.root_port) {
 218                 all_zero_addr = socket_address_from_strings(tmp_ctx, nbtsock->sock->backend_name,
 219                                                             "0.0.0.0", NBT_NAME_SERVICE_PORT);
 220
 221                 if (!all_zero_addr) {
 222                         talloc_free(tmp_ctx);
 223                         return false;
 224                 }
 225
 226                 status = socket_listen(nbtsock->sock, all_zero_addr, 0, 0);
 227                 if (!NT_STATUS_IS_OK(status)) {
 228                         printf("Failed to bind to local port 137 - %s\n", nt_errstr(status));
 229                         talloc_free(tmp_ctx);
 230                         return false;
 231                 }
 232         }
 233
 234         if (options.lookup_by_ip) {
 235                 ret = do_node_status(nbtsock, name, nbt_port);
 236                 talloc_free(tmp_ctx);
 237                 return ret;
 238         }
 239
 240         if (options.broadcast_address) {
 241                 status = do_node_query(nbtsock, options.broadcast_address, nbt_port,
 242                                        node_name, node_type, true);
 243         } else if (options.unicast_address) {
 244                 status = do_node_query(nbtsock, options.unicast_address,
 245                                        nbt_port, node_name, node_type, false);
 246         } else {
 247                 int i, num_interfaces;
 248
 249                 num_interfaces = iface_list_count(ifaces);
 250                 for (i=0;i<num_interfaces;i++) {
 251                         const char *bcast = iface_list_n_bcast(ifaces, i);
 252                         if (bcast == NULL) continue;
 253                         status = do_node_query(nbtsock, bcast, nbt_port,
 254                                                node_name, node_type, true);
 255                         if (NT_STATUS_IS_OK(status)) break;
 256                 }
 257         }
 258
 259         if (!NT_STATUS_IS_OK(status)) {
 260                 printf("Lookup failed - %s\n", nt_errstr(status));
 261                 ret = false;
 262         }
 263
 264         talloc_free(tmp_ctx);
 265         return ret;
 266 }
 267
 268 /*
 269   main program
 270 */
 271 int main(int argc, const char *argv[])
 272 {
 273         bool ret = true;
 274         struct interface *ifaces;
 275         struct tevent_context *ev;
 276         poptContext pc;
 277         int opt;
 278         enum {
 279                 OPT_BROADCAST_ADDRESS   = 1000,
 280                 OPT_UNICAST_ADDRESS,
 281                 OPT_FIND_MASTER,
 282                 OPT_WINS_LOOKUP,
 283                 OPT_NODE_STATUS,
 284                 OPT_ROOT_PORT,
 285                 OPT_LOOKUP_BY_IP,
 286                 OPT_CASE_SENSITIVE
 287         };
 288         struct poptOption long_options[] = {
 289                 POPT_AUTOHELP
 290                 { "broadcast", 'B', POPT_ARG_STRING, NULL, OPT_BROADCAST_ADDRESS,
 291                   "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
 292
 293                 { "unicast", 'U', POPT_ARG_STRING, NULL, OPT_UNICAST_ADDRESS,
 294                   "Specify address to use for unicast", NULL },
 295
 296                 { "master-browser", 'M', POPT_ARG_NONE, NULL, OPT_FIND_MASTER,
 297                   "Search for a master browser", NULL },
 298
 299                 { "wins", 'W', POPT_ARG_NONE, NULL, OPT_WINS_LOOKUP,
 300                   "Do a WINS lookup", NULL },
 301
 302                 { "status", 'S', POPT_ARG_NONE, NULL, OPT_NODE_STATUS,
 303                   "Lookup node status as well", NULL },
 304
 305                 { "root-port", 'r', POPT_ARG_NONE, NULL, OPT_ROOT_PORT,
 306                   "Use root port 137 (Win95 only replies to this)", NULL },
 307
 308                 { "lookup-by-ip", 'A', POPT_ARG_NONE, NULL, OPT_LOOKUP_BY_IP,
 309                   "Do a node status on <name> as an IP Address", NULL },
 310
 311                 { "case-sensitive", 0, POPT_ARG_NONE, NULL, OPT_CASE_SENSITIVE,
 312                   "Don't uppercase the name before sending", NULL },
 313
 314                 POPT_COMMON_SAMBA
 315                 { 0, 0, 0, 0 }
 316         };
 317
 318         pc = poptGetContext("nmblookup", argc, argv, long_options,
 319                             POPT_CONTEXT_KEEP_FIRST);
 320
 321         poptSetOtherOptionHelp(pc, "<NODE> ...");
 322
 323         while ((opt = poptGetNextOpt(pc)) != -1) {
 324                 switch(opt) {
 325                 case OPT_BROADCAST_ADDRESS:
 326                         options.broadcast_address = poptGetOptArg(pc);
 327                         break;
 328                 case OPT_UNICAST_ADDRESS:
 329                         options.unicast_address = poptGetOptArg(pc);
 330                         break;
 331                 case OPT_FIND_MASTER:
 332                         options.find_master = true;
 333                         break;
 334                 case OPT_WINS_LOOKUP:
 335                         options.wins_lookup = true;
 336                         break;
 337                 case OPT_NODE_STATUS:
 338                         options.node_status = true;
 339                         break;
 340                 case OPT_ROOT_PORT:
 341                         options.root_port = true;
 342                         break;
 343                 case OPT_LOOKUP_BY_IP:
 344                         options.lookup_by_ip = true;
 345                         break;
 346                 case OPT_CASE_SENSITIVE:
 347                         options.case_sensitive = true;
 348                         break;
 349                 }
 350         }
 351
 352         /* swallow argv[0] */
 353         poptGetArg(pc);
 354
 355         if(!poptPeekArg(pc)) {
 356                 poptPrintUsage(pc, stderr, 0);
 357                 exit(1);
 358         }
 359
 360         load_interface_list(NULL, cmdline_lp_ctx, &ifaces);
 361
 362         ev = s4_event_context_init(talloc_autofree_context());
 363
 364         while (poptPeekArg(pc)) {
 365                 const char *name = poptGetArg(pc);
 366
 367                 ret &= process_one(cmdline_lp_ctx, ev, ifaces, name, lpcfg_nbt_port(cmdline_lp_ctx));
 368         }
 369
 370         talloc_free(ev);
 371
 372         talloc_free(ifaces);
 373
 374         poptFreeContext(pc);
 375
 376         if (!ret) {
 377                 return 1;
 378         }
 379
 380         return 0;
 381 }