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 #include "lib/util/string_wrappers.h"
  27
  28 static bool give_flags = false;
  29 static bool use_bcast = true;
  30 static bool got_bcast = false;
  31 static struct sockaddr_storage bcast_addr;
  32 static bool recursion_desired = false;
  33 static bool translate_addresses = false;
  34 static int ServerFD= -1;
  35 static bool RootPort = false;
  36 static bool find_status = false;
  37
  38 /****************************************************************************
  39  Open the socket communication.
  40 **************************************************************************/
  41
  42 static bool open_sockets(void)
  43 {
  44         struct sockaddr_storage ss;
  45         const char *sock_addr = lp_nbt_client_socket_address();
  46
  47         if (!interpret_string_addr(&ss, sock_addr,
  48                                 AI_NUMERICHOST|AI_PASSIVE)) {
  49                 DEBUG(0,("open_sockets: unable to get socket address "
  50                                         "from string %s", sock_addr));
  51                 return false;
  52         }
  53         ServerFD = open_socket_in( SOCK_DGRAM,
  54                                 (RootPort ? 137 : 0),
  55                                 (RootPort ?   0 : 3),
  56                                 &ss, true );
  57
  58         if (ServerFD == -1) {
  59                 return false;
  60         }
  61
  62         set_socket_options( ServerFD, "SO_BROADCAST" );
  63
  64         DEBUG(3, ("Socket opened.\n"));
  65         return true;
  66 }
  67
  68 /****************************************************************************
  69 turn a node status flags field into a string
  70 ****************************************************************************/
  71 static char *node_status_flags(unsigned char flags)
  72 {
  73         static fstring ret;
  74         fstrcpy(ret,"");
  75
  76         fstrcat(ret, (flags & 0x80) ? "<GROUP> " : "        ");
  77         if ((flags & 0x60) == 0x00) fstrcat(ret,"B ");
  78         if ((flags & 0x60) == 0x20) fstrcat(ret,"P ");
  79         if ((flags & 0x60) == 0x40) fstrcat(ret,"M ");
  80         if ((flags & 0x60) == 0x60) fstrcat(ret,"H ");
  81         if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> ");
  82         if (flags & 0x08) fstrcat(ret,"<CONFLICT> ");
  83         if (flags & 0x04) fstrcat(ret,"<ACTIVE> ");
  84         if (flags & 0x02) fstrcat(ret,"<PERMANENT> ");
  85
  86         return ret;
  87 }
  88
  89 /****************************************************************************
  90  Turn the NMB Query flags into a string.
  91 ****************************************************************************/
  92
  93 static char *query_flags(int flags)
  94 {
  95         static fstring ret1;
  96         fstrcpy(ret1, "");
  97
  98         if (flags & NM_FLAGS_RS) fstrcat(ret1, "Response ");
  99         if (flags & NM_FLAGS_AA) fstrcat(ret1, "Authoritative ");
 100         if (flags & NM_FLAGS_TC) fstrcat(ret1, "Truncated ");
 101         if (flags & NM_FLAGS_RD) fstrcat(ret1, "Recursion_Desired ");
 102         if (flags & NM_FLAGS_RA) fstrcat(ret1, "Recursion_Available ");
 103         if (flags & NM_FLAGS_B)  fstrcat(ret1, "Broadcast ");
 104
 105         return ret1;
 106 }
 107
 108 /****************************************************************************
 109  Do a node status query.
 110 ****************************************************************************/
 111
 112 static bool do_node_status(const char *name,
 113                 int type,
 114                 struct sockaddr_storage *pss)
 115 {
 116         struct nmb_name nname;
 117         int count, i, j;
 118         struct node_status *addrs;
 119         struct node_status_extra extra;
 120         fstring cleanname;
 121         char addr[INET6_ADDRSTRLEN];
 122         NTSTATUS status;
 123
 124         print_sockaddr(addr, sizeof(addr), pss);
 125         d_printf("Looking up status of %s\n",addr);
 126         make_nmb_name(&nname, name, type);
 127         status = node_status_query(talloc_tos(), &nname, pss,
 128                                    &addrs, &count, &extra);
 129         if (NT_STATUS_IS_OK(status)) {
 130                 for (i=0;i<count;i++) {
 131                         pull_ascii_fstring(cleanname, addrs[i].name);
 132                         for (j=0;cleanname[j];j++) {
 133                                 if (!isprint((int)cleanname[j])) {
 134                                         cleanname[j] = '.';
 135                                 }
 136                         }
 137                         d_printf("\t%-15s <%02x> - %s\n",
 138                                cleanname,addrs[i].type,
 139                                node_status_flags(addrs[i].flags));
 140                 }
 141                 d_printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
 142                                 extra.mac_addr[0], extra.mac_addr[1],
 143                                 extra.mac_addr[2], extra.mac_addr[3],
 144                                 extra.mac_addr[4], extra.mac_addr[5]);
 145                 d_printf("\n");
 146                 TALLOC_FREE(addrs);
 147                 return true;
 148         } else {
 149                 d_printf("No reply from %s\n\n",addr);
 150                 return false;
 151         }
 152 }
 153
 154
 155 /****************************************************************************
 156  Send out one query.
 157 ****************************************************************************/
 158
 159 static bool query_one(const char *lookup, unsigned int lookup_type)
 160 {
 161         int j, count;
 162         uint8_t flags;
 163         struct sockaddr_storage *ip_list=NULL;
 164         NTSTATUS status = NT_STATUS_NOT_FOUND;
 165
 166         if (got_bcast) {
 167                 char addr[INET6_ADDRSTRLEN];
 168                 print_sockaddr(addr, sizeof(addr), &bcast_addr);
 169                 d_printf("querying %s on %s\n", lookup, addr);
 170                 status = name_query(lookup,lookup_type,use_bcast,
 171                                     use_bcast?true:recursion_desired,
 172                                     &bcast_addr, talloc_tos(),
 173                                     &ip_list, &count, &flags);
 174         } else {
 175                 status = name_resolve_bcast(talloc_tos(),
 176                                             lookup,
 177                                             lookup_type,
 178                                             &ip_list,
 179                                             &count);
 180         }
 181
 182         if (!NT_STATUS_IS_OK(status)) {
 183                 return false;
 184         }
 185
 186         if (give_flags) {
 187                 d_printf("Flags: %s\n", query_flags(flags));
 188         }
 189
 190         for (j=0;j<count;j++) {
 191                 char addr[INET6_ADDRSTRLEN];
 192                 if (translate_addresses) {
 193                         char h_name[MAX_DNS_NAME_LENGTH];
 194                         h_name[0] = '\0';
 195                         if (sys_getnameinfo((const struct sockaddr *)&ip_list[j],
 196                                         sizeof(struct sockaddr_storage),
 197                                         h_name, sizeof(h_name),
 198                                         NULL, 0,
 199                                         NI_NAMEREQD)) {
 200                                 continue;
 201                         }
 202                         d_printf("%s, ", h_name);
 203                 }
 204                 print_sockaddr(addr, sizeof(addr), &ip_list[j]);
 205                 d_printf("%s %s<%02x>\n", addr,lookup, lookup_type);
 206                 /* We can only do find_status if the ip address returned
 207                    was valid - ie. name_query returned true.
 208                  */
 209                 if (find_status) {
 210                         if (!do_node_status(lookup, lookup_type, &ip_list[j])) {
 211                                 status = NT_STATUS_UNSUCCESSFUL;
 212                         }
 213                 }
 214         }
 215
 216         TALLOC_FREE(ip_list);
 217
 218         return NT_STATUS_IS_OK(status);
 219 }
 220
 221
 222 /****************************************************************************
 223   main program
 224 ****************************************************************************/
 225 int main(int argc, const char *argv[])
 226 {
 227         int opt;
 228         unsigned int lookup_type = 0x0;
 229         fstring lookup;
 230         static bool find_master=False;
 231         static bool lookup_by_ip = False;
 232         poptContext pc = NULL;
 233         TALLOC_CTX *frame = talloc_stackframe();
 234         int rc = 0;
 235
 236         struct poptOption long_options[] = {
 237                 POPT_AUTOHELP
 238                 {
 239                         .longName   = "broadcast",
 240                         .shortName  = 'B',
 241                         .argInfo    = POPT_ARG_STRING,
 242                         .arg        = NULL,
 243                         .val        = 'B',
 244                         .descrip    = "Specify address to use for broadcasts",
 245                         .argDescrip = "BROADCAST-ADDRESS",
 246                 },
 247                 {
 248                         .longName   = "flags",
 249                         .shortName  = 'f',
 250                         .argInfo    = POPT_ARG_NONE,
 251                         .arg        = NULL,
 252                         .val        = 'f',
 253                         .descrip    = "List the NMB flags returned",
 254                 },
 255                 {
 256                         .longName   = "unicast",
 257                         .shortName  = 'U',
 258                         .argInfo    = POPT_ARG_STRING,
 259                         .arg        = NULL,
 260                         .val        = 'U',
 261                         .descrip    = "Specify address to use for unicast",
 262                 },
 263                 {
 264                         .longName   = "master-browser",
 265                         .shortName  = 'M',
 266                         .argInfo    = POPT_ARG_NONE,
 267                         .arg        = NULL,
 268                         .val        = 'M',
 269                         .descrip    = "Search for a master browser",
 270                 },
 271                 {
 272                         .longName   = "recursion",
 273                         .shortName  = 'R',
 274                         .argInfo    = POPT_ARG_NONE,
 275                         .arg        = NULL,
 276                         .val        = 'R',
 277                         .descrip    = "Set recursion desired in package",
 278                 },
 279                 {
 280                         .longName   = "status",
 281                         .shortName  = 'S',
 282                         .argInfo    = POPT_ARG_NONE,
 283                         .arg        = NULL,
 284                         .val        = 'S',
 285                         .descrip    = "Lookup node status as well",
 286                 },
 287                 {
 288                         .longName   = "translate",
 289                         .shortName  = 'T',
 290                         .argInfo    = POPT_ARG_NONE,
 291                         .arg        = NULL,
 292                         .val        = 'T',
 293                         .descrip    = "Translate IP addresses into names",
 294                 },
 295                 {
 296                         .longName   = "root-port",
 297                         .shortName  = 'r',
 298                         .argInfo    = POPT_ARG_NONE,
 299                         .arg        = NULL,
 300                         .val        = 'r',
 301                         .descrip    = "Use root port 137 (Win95 only replies to this)",
 302                 },
 303                 {
 304                         .longName   = "lookup-by-ip",
 305                         .shortName  = 'A',
 306                         .argInfo    = POPT_ARG_NONE,
 307                         .arg        = NULL,
 308                         .val        = 'A',
 309                         .descrip    = "Do a node status on <name> as an IP Address",
 310                 },
 311                 POPT_COMMON_SAMBA
 312                 POPT_COMMON_CONNECTION
 313                 POPT_TABLEEND
 314         };
 315
 316         *lookup = 0;
 317
 318         smb_init_locale();
 319
 320         setup_logging(argv[0], DEBUG_STDOUT);
 321
 322         pc = poptGetContext("nmblookup", argc, argv,
 323                         long_options, POPT_CONTEXT_KEEP_FIRST);
 324
 325         poptSetOtherOptionHelp(pc, "<NODE> ...");
 326
 327         while ((opt = poptGetNextOpt(pc)) != -1) {
 328                 switch (opt) {
 329                 case 'f':
 330                         give_flags = true;
 331                         break;
 332                 case 'M':
 333                         find_master = true;
 334                         break;
 335                 case 'R':
 336                         recursion_desired = true;
 337                         break;
 338                 case 'S':
 339                         find_status = true;
 340                         break;
 341                 case 'r':
 342                         RootPort = true;
 343                         break;
 344                 case 'A':
 345                         lookup_by_ip = true;
 346                         break;
 347                 case 'B':
 348                         if (interpret_string_addr(&bcast_addr,
 349                                         poptGetOptArg(pc),
 350                                         NI_NUMERICHOST)) {
 351                                 got_bcast = True;
 352                                 use_bcast = True;
 353                         }
 354                         break;
 355                 case 'U':
 356                         if (interpret_string_addr(&bcast_addr,
 357                                         poptGetOptArg(pc),
 358                                         0)) {
 359                                 got_bcast = True;
 360                                 use_bcast = False;
 361                         }
 362                         break;
 363                 case 'T':
 364                         translate_addresses = !translate_addresses;
 365                         break;
 366                 }
 367         }
 368
 369         poptGetArg(pc); /* Remove argv[0] */
 370
 371         if(!poptPeekArg(pc)) {
 372                 poptPrintUsage(pc, stderr, 0);
 373                 rc = 1;
 374                 goto out;
 375         }
 376
 377         if (!lp_load_global(get_dyn_CONFIGFILE())) {
 378                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 379                                 get_dyn_CONFIGFILE());
 380         }
 381
 382         load_interfaces();
 383         if (!open_sockets()) {
 384                 rc = 1;
 385                 goto out;
 386         }
 387
 388         while(poptPeekArg(pc)) {
 389                 char *p;
 390                 struct in_addr ip;
 391                 size_t nbt_len;
 392
 393                 fstrcpy(lookup,poptGetArg(pc));
 394
 395                 if(lookup_by_ip) {
 396                         struct sockaddr_storage ss;
 397                         ip = interpret_addr2(lookup);
 398                         in_addr_to_sockaddr_storage(&ss, ip);
 399                         fstrcpy(lookup,"*");
 400                         if (!do_node_status(lookup, lookup_type, &ss)) {
 401                                 rc = 1;
 402                         }
 403                         continue;
 404                 }
 405
 406                 if (find_master) {
 407                         if (*lookup == '-') {
 408                                 fstrcpy(lookup,"\01\02__MSBROWSE__\02");
 409                                 lookup_type = 1;
 410                         } else {
 411                                 lookup_type = 0x1d;
 412                         }
 413                 }
 414
 415                 p = strchr_m(lookup,'#');
 416                 if (p) {
 417                         *p = '\0';
 418                         sscanf(++p,"%x",&lookup_type);
 419                 }
 420
 421                 nbt_len = strlen(lookup);
 422                 if (nbt_len > MAX_NETBIOSNAME_LEN - 1) {
 423                         d_printf("The specified netbios name [%s] is too long!\n",
 424                                  lookup);
 425                         continue;
 426                 }
 427
 428
 429                 if (!query_one(lookup, lookup_type)) {
 430                         rc = 1;
 431                         d_printf( "name_query failed to find name %s", lookup );
 432                         if( 0 != lookup_type ) {
 433                                 d_printf( "#%02x", lookup_type );
 434                         }
 435                         d_printf( "\n" );
 436                 }
 437         }
 438
 439 out:
 440         poptFreeContext(pc);
 441         TALLOC_FREE(frame);
 442         return rc;
 443 }