source3/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 3 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, see <http://www.gnu.org/licenses/>.
  19
  20 */
  21
  22 #include "includes.h"
  23 #include "popt_common.h"
  24 #include "libsmb/nmblib.h"
  25 #include "libsmb/namequery.h"
  26
  27 static bool give_flags = false;
  28 static bool use_bcast = true;
  29 static bool got_bcast = false;
  30 static struct sockaddr_storage bcast_addr;
  31 static bool recursion_desired = false;
  32 static bool translate_addresses = false;
  33 static int ServerFD= -1;
  34 static bool RootPort = false;
  35 static bool find_status = false;
  36
  37 /****************************************************************************
  38  Open the socket communication.
  39 **************************************************************************/
  40
  41 static bool open_sockets(void)
  42 {
  43         struct sockaddr_storage ss;
  44         const char *sock_addr = lp_nbt_client_socket_address();
  45
  46         if (!interpret_string_addr(&ss, sock_addr,
  47                                 AI_NUMERICHOST|AI_PASSIVE)) {
  48                 DEBUG(0,("open_sockets: unable to get socket address "
  49                                         "from string %s", sock_addr));
  50                 return false;
  51         }
  52         ServerFD = open_socket_in( SOCK_DGRAM,
  53                                 (RootPort ? 137 : 0),
  54                                 (RootPort ?   0 : 3),
  55                                 &ss, true );
  56
  57         if (ServerFD == -1) {
  58                 return false;
  59         }
  60
  61         set_socket_options( ServerFD, "SO_BROADCAST" );
  62
  63         DEBUG(3, ("Socket opened.\n"));
  64         return true;
  65 }
  66
  67 /****************************************************************************
  68 turn a node status flags field into a string
  69 ****************************************************************************/
  70 static char *node_status_flags(unsigned char flags)
  71 {
  72         static fstring ret;
  73         fstrcpy(ret,"");
  74
  75         fstrcat(ret, (flags & 0x80) ? "<GROUP> " : "        ");
  76         if ((flags & 0x60) == 0x00) fstrcat(ret,"B ");
  77         if ((flags & 0x60) == 0x20) fstrcat(ret,"P ");
  78         if ((flags & 0x60) == 0x40) fstrcat(ret,"M ");
  79         if ((flags & 0x60) == 0x60) fstrcat(ret,"H ");
  80         if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> ");
  81         if (flags & 0x08) fstrcat(ret,"<CONFLICT> ");
  82         if (flags & 0x04) fstrcat(ret,"<ACTIVE> ");
  83         if (flags & 0x02) fstrcat(ret,"<PERMANENT> ");
  84
  85         return ret;
  86 }
  87
  88 /****************************************************************************
  89  Turn the NMB Query flags into a string.
  90 ****************************************************************************/
  91
  92 static char *query_flags(int flags)
  93 {
  94         static fstring ret1;
  95         fstrcpy(ret1, "");
  96
  97         if (flags & NM_FLAGS_RS) fstrcat(ret1, "Response ");
  98         if (flags & NM_FLAGS_AA) fstrcat(ret1, "Authoritative ");
  99         if (flags & NM_FLAGS_TC) fstrcat(ret1, "Truncated ");
 100         if (flags & NM_FLAGS_RD) fstrcat(ret1, "Recursion_Desired ");
 101         if (flags & NM_FLAGS_RA) fstrcat(ret1, "Recursion_Available ");
 102         if (flags & NM_FLAGS_B)  fstrcat(ret1, "Broadcast ");
 103
 104         return ret1;
 105 }
 106
 107 /****************************************************************************
 108  Do a node status query.
 109 ****************************************************************************/
 110
 111 static bool do_node_status(const char *name,
 112                 int type,
 113                 struct sockaddr_storage *pss)
 114 {
 115         struct nmb_name nname;
 116         int count, i, j;
 117         struct node_status *addrs;
 118         struct node_status_extra extra;
 119         fstring cleanname;
 120         char addr[INET6_ADDRSTRLEN];
 121         NTSTATUS status;
 122
 123         print_sockaddr(addr, sizeof(addr), pss);
 124         d_printf("Looking up status of %s\n",addr);
 125         make_nmb_name(&nname, name, type);
 126         status = node_status_query(talloc_tos(), &nname, pss,
 127                                    &addrs, &count, &extra);
 128         if (NT_STATUS_IS_OK(status)) {
 129                 for (i=0;i<count;i++) {
 130                         pull_ascii_fstring(cleanname, addrs[i].name);
 131                         for (j=0;cleanname[j];j++) {
 132                                 if (!isprint((int)cleanname[j])) {
 133                                         cleanname[j] = '.';
 134                                 }
 135                         }
 136                         d_printf("\t%-15s <%02x> - %s\n",
 137                                cleanname,addrs[i].type,
 138                                node_status_flags(addrs[i].flags));
 139                 }
 140                 d_printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
 141                                 extra.mac_addr[0], extra.mac_addr[1],
 142                                 extra.mac_addr[2], extra.mac_addr[3],
 143                                 extra.mac_addr[4], extra.mac_addr[5]);
 144                 d_printf("\n");
 145                 TALLOC_FREE(addrs);
 146                 return true;
 147         } else {
 148                 d_printf("No reply from %s\n\n",addr);
 149                 return false;
 150         }
 151 }
 152
 153
 154 /****************************************************************************
 155  Send out one query.
 156 ****************************************************************************/
 157
 158 static bool query_one(const char *lookup, unsigned int lookup_type)
 159 {
 160         int j, count;
 161         uint8_t flags;
 162         struct sockaddr_storage *ip_list=NULL;
 163         NTSTATUS status = NT_STATUS_NOT_FOUND;
 164
 165         if (got_bcast) {
 166                 char addr[INET6_ADDRSTRLEN];
 167                 print_sockaddr(addr, sizeof(addr), &bcast_addr);
 168                 d_printf("querying %s on %s\n", lookup, addr);
 169                 status = name_query(lookup,lookup_type,use_bcast,
 170                                     use_bcast?true:recursion_desired,
 171                                     &bcast_addr, talloc_tos(),
 172                                     &ip_list, &count, &flags);
 173         } else {
 174                 status = name_resolve_bcast(talloc_tos(),
 175                                             lookup,
 176                                             lookup_type,
 177                                             &ip_list,
 178                                             &count);
 179         }
 180
 181         if (!NT_STATUS_IS_OK(status)) {
 182                 return false;
 183         }
 184
 185         if (give_flags) {
 186                 d_printf("Flags: %s\n", query_flags(flags));
 187         }
 188
 189         for (j=0;j<count;j++) {
 190                 char addr[INET6_ADDRSTRLEN];
 191                 if (translate_addresses) {
 192                         char h_name[MAX_DNS_NAME_LENGTH];
 193                         h_name[0] = '\0';
 194                         if (sys_getnameinfo((const struct sockaddr *)&ip_list[j],
 195                                         sizeof(struct sockaddr_storage),
 196                                         h_name, sizeof(h_name),
 197                                         NULL, 0,
 198                                         NI_NAMEREQD)) {
 199                                 continue;
 200                         }
 201                         d_printf("%s, ", h_name);
 202                 }
 203                 print_sockaddr(addr, sizeof(addr), &ip_list[j]);
 204                 d_printf("%s %s<%02x>\n", addr,lookup, lookup_type);
 205                 /* We can only do find_status if the ip address returned
 206                    was valid - ie. name_query returned true.
 207                  */
 208                 if (find_status) {
 209                         if (!do_node_status(lookup, lookup_type, &ip_list[j])) {
 210                                 status = NT_STATUS_UNSUCCESSFUL;
 211                         }
 212                 }
 213         }
 214
 215         TALLOC_FREE(ip_list);
 216
 217         return NT_STATUS_IS_OK(status);
 218 }
 219
 220
 221 /****************************************************************************
 222   main program
 223 ****************************************************************************/
 224 int main(int argc, const char *argv[])
 225 {
 226         int opt;
 227         unsigned int lookup_type = 0x0;
 228         fstring lookup;
 229         static bool find_master=False;
 230         static bool lookup_by_ip = False;
 231         poptContext pc = NULL;
 232         TALLOC_CTX *frame = talloc_stackframe();
 233         int rc = 0;
 234
 235         struct poptOption long_options[] = {
 236                 POPT_AUTOHELP
 237                 {
 238                         .longName   = "broadcast",
 239                         .shortName  = 'B',
 240                         .argInfo    = POPT_ARG_STRING,
 241                         .arg        = NULL,
 242                         .val        = 'B',
 243                         .descrip    = "Specify address to use for broadcasts",
 244                         .argDescrip = "BROADCAST-ADDRESS",
 245                 },
 246                 {
 247                         .longName   = "flags",
 248                         .shortName  = 'f',
 249                         .argInfo    = POPT_ARG_NONE,
 250                         .arg        = NULL,
 251                         .val        = 'f',
 252                         .descrip    = "List the NMB flags returned",
 253                 },
 254                 {
 255                         .longName   = "unicast",
 256                         .shortName  = 'U',
 257                         .argInfo    = POPT_ARG_STRING,
 258                         .arg        = NULL,
 259                         .val        = 'U',
 260                         .descrip    = "Specify address to use for unicast",
 261                 },
 262                 {
 263                         .longName   = "master-browser",
 264                         .shortName  = 'M',
 265                         .argInfo    = POPT_ARG_NONE,
 266                         .arg        = NULL,
 267                         .val        = 'M',
 268                         .descrip    = "Search for a master browser",
 269                 },
 270                 {
 271                         .longName   = "recursion",
 272                         .shortName  = 'R',
 273                         .argInfo    = POPT_ARG_NONE,
 274                         .arg        = NULL,
 275                         .val        = 'R',
 276                         .descrip    = "Set recursion desired in package",
 277                 },
 278                 {
 279                         .longName   = "status",
 280                         .shortName  = 'S',
 281                         .argInfo    = POPT_ARG_NONE,
 282                         .arg        = NULL,
 283                         .val        = 'S',
 284                         .descrip    = "Lookup node status as well",
 285                 },
 286                 {
 287                         .longName   = "translate",
 288                         .shortName  = 'T',
 289                         .argInfo    = POPT_ARG_NONE,
 290                         .arg        = NULL,
 291                         .val        = 'T',
 292                         .descrip    = "Translate IP addresses into names",
 293                 },
 294                 {
 295                         .longName   = "root-port",
 296                         .shortName  = 'r',
 297                         .argInfo    = POPT_ARG_NONE,
 298                         .arg        = NULL,
 299                         .val        = 'r',
 300                         .descrip    = "Use root port 137 (Win95 only replies to this)",
 301                 },
 302                 {
 303                         .longName   = "lookup-by-ip",
 304                         .shortName  = 'A',
 305                         .argInfo    = POPT_ARG_NONE,
 306                         .arg        = NULL,
 307                         .val        = 'A',
 308                         .descrip    = "Do a node status on <name> as an IP Address",
 309                 },
 310                 POPT_COMMON_SAMBA
 311                 POPT_COMMON_CONNECTION
 312                 POPT_TABLEEND
 313         };
 314
 315         *lookup = 0;
 316
 317         smb_init_locale();
 318
 319         setup_logging(argv[0], DEBUG_STDOUT);
 320
 321         pc = poptGetContext("nmblookup", argc, argv,
 322                         long_options, POPT_CONTEXT_KEEP_FIRST);
 323
 324         poptSetOtherOptionHelp(pc, "<NODE> ...");
 325
 326         while ((opt = poptGetNextOpt(pc)) != -1) {
 327                 switch (opt) {
 328                 case 'f':
 329                         give_flags = true;
 330                         break;
 331                 case 'M':
 332                         find_master = true;
 333                         break;
 334                 case 'R':
 335                         recursion_desired = true;
 336                         break;
 337                 case 'S':
 338                         find_status = true;
 339                         break;
 340                 case 'r':
 341                         RootPort = true;
 342                         break;
 343                 case 'A':
 344                         lookup_by_ip = true;
 345                         break;
 346                 case 'B':
 347                         if (interpret_string_addr(&bcast_addr,
 348                                         poptGetOptArg(pc),
 349                                         NI_NUMERICHOST)) {
 350                                 got_bcast = True;
 351                                 use_bcast = True;
 352                         }
 353                         break;
 354                 case 'U':
 355                         if (interpret_string_addr(&bcast_addr,
 356                                         poptGetOptArg(pc),
 357                                         0)) {
 358                                 got_bcast = True;
 359                                 use_bcast = False;
 360                         }
 361                         break;
 362                 case 'T':
 363                         translate_addresses = !translate_addresses;
 364                         break;
 365                 }
 366         }
 367
 368         poptGetArg(pc); /* Remove argv[0] */
 369
 370         if(!poptPeekArg(pc)) {
 371                 poptPrintUsage(pc, stderr, 0);
 372                 rc = 1;
 373                 goto out;
 374         }
 375
 376         if (!lp_load_global(get_dyn_CONFIGFILE())) {
 377                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 378                                 get_dyn_CONFIGFILE());
 379         }
 380
 381         load_interfaces();
 382         if (!open_sockets()) {
 383                 rc = 1;
 384                 goto out;
 385         }
 386
 387         while(poptPeekArg(pc)) {
 388                 char *p;
 389                 struct in_addr ip;
 390                 size_t nbt_len;
 391
 392                 fstrcpy(lookup,poptGetArg(pc));
 393
 394                 if(lookup_by_ip) {
 395                         struct sockaddr_storage ss;
 396                         ip = interpret_addr2(lookup);
 397                         in_addr_to_sockaddr_storage(&ss, ip);
 398                         fstrcpy(lookup,"*");
 399                         if (!do_node_status(lookup, lookup_type, &ss)) {
 400                                 rc = 1;
 401                         }
 402                         continue;
 403                 }
 404
 405                 if (find_master) {
 406                         if (*lookup == '-') {
 407                                 fstrcpy(lookup,"\01\02__MSBROWSE__\02");
 408                                 lookup_type = 1;
 409                         } else {
 410                                 lookup_type = 0x1d;
 411                         }
 412                 }
 413
 414                 p = strchr_m(lookup,'#');
 415                 if (p) {
 416                         *p = '\0';
 417                         sscanf(++p,"%x",&lookup_type);
 418                 }
 419
 420                 nbt_len = strlen(lookup);
 421                 if (nbt_len > MAX_NETBIOSNAME_LEN - 1) {
 422                         d_printf("The specified netbios name [%s] is too long!\n",
 423                                  lookup);
 424                         continue;
 425                 }
 426
 427
 428                 if (!query_one(lookup, lookup_type)) {
 429                         rc = 1;
 430                         d_printf( "name_query failed to find name %s", lookup );
 431                         if( 0 != lookup_type ) {
 432                                 d_printf( "#%02x", lookup_type );
 433                         }
 434                         d_printf( "\n" );
 435                 }
 436         }
 437
 438 out:
 439         poptFreeContext(pc);
 440         TALLOC_FREE(frame);
 441         return rc;
 442 }