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 "lib/cmdline/cmdline.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\n", sock_addr));
  51                 return false;
  52         }
  53         ServerFD = open_socket_in(
  54                 SOCK_DGRAM, &ss, (RootPort ? 137 : 0), true);
  55         if (ServerFD < 0) {
  56                 if (RootPort) {
  57                         DBG_ERR("open_socket_in failed: %s\n",
  58                                 strerror(-ServerFD));
  59                 } else {
  60                         DBG_NOTICE("open_socket_in failed: %s\n",
  61                                    strerror(-ServerFD));
  62                 }
  63                 return false;
  64         }
  65
  66         set_socket_options( ServerFD, "SO_BROADCAST" );
  67
  68         DEBUG(3, ("Socket opened.\n"));
  69         return true;
  70 }
  71
  72 /****************************************************************************
  73 turn a node status flags field into a string
  74 ****************************************************************************/
  75 static char *node_status_flags(unsigned char flags)
  76 {
  77         static fstring ret;
  78         fstrcpy(ret,"");
  79
  80         fstrcat(ret, (flags & 0x80) ? "<GROUP> " : "        ");
  81         if ((flags & 0x60) == 0x00) fstrcat(ret,"B ");
  82         if ((flags & 0x60) == 0x20) fstrcat(ret,"P ");
  83         if ((flags & 0x60) == 0x40) fstrcat(ret,"M ");
  84         if ((flags & 0x60) == 0x60) fstrcat(ret,"H ");
  85         if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> ");
  86         if (flags & 0x08) fstrcat(ret,"<CONFLICT> ");
  87         if (flags & 0x04) fstrcat(ret,"<ACTIVE> ");
  88         if (flags & 0x02) fstrcat(ret,"<PERMANENT> ");
  89
  90         return ret;
  91 }
  92
  93 /****************************************************************************
  94  Turn the NMB Query flags into a string.
  95 ****************************************************************************/
  96
  97 static char *query_flags(int flags)
  98 {
  99         static fstring ret1;
 100         fstrcpy(ret1, "");
 101
 102         if (flags & NM_FLAGS_RS) fstrcat(ret1, "Response ");
 103         if (flags & NM_FLAGS_AA) fstrcat(ret1, "Authoritative ");
 104         if (flags & NM_FLAGS_TC) fstrcat(ret1, "Truncated ");
 105         if (flags & NM_FLAGS_RD) fstrcat(ret1, "Recursion_Desired ");
 106         if (flags & NM_FLAGS_RA) fstrcat(ret1, "Recursion_Available ");
 107         if (flags & NM_FLAGS_B)  fstrcat(ret1, "Broadcast ");
 108
 109         return ret1;
 110 }
 111
 112 /****************************************************************************
 113  Do a node status query.
 114 ****************************************************************************/
 115
 116 static bool do_node_status(const char *name,
 117                 int type,
 118                 struct sockaddr_storage *pss)
 119 {
 120         struct nmb_name nname;
 121         size_t count = 0;
 122         size_t i, j;
 123         struct node_status *addrs;
 124         struct node_status_extra extra;
 125         fstring cleanname;
 126         char addr[INET6_ADDRSTRLEN];
 127         NTSTATUS status;
 128
 129         print_sockaddr(addr, sizeof(addr), pss);
 130         d_printf("Looking up status of %s\n",addr);
 131         make_nmb_name(&nname, name, type);
 132         status = node_status_query(talloc_tos(), &nname, pss,
 133                                    &addrs, &count, &extra);
 134         if (NT_STATUS_IS_OK(status)) {
 135                 for (i=0;i<count;i++) {
 136                         pull_ascii_fstring(cleanname, addrs[i].name);
 137                         for (j=0;cleanname[j];j++) {
 138                                 if (!isprint((int)cleanname[j])) {
 139                                         cleanname[j] = '.';
 140                                 }
 141                         }
 142                         d_printf("\t%-15s <%02x> - %s\n",
 143                                cleanname,addrs[i].type,
 144                                node_status_flags(addrs[i].flags));
 145                 }
 146                 d_printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
 147                                 extra.mac_addr[0], extra.mac_addr[1],
 148                                 extra.mac_addr[2], extra.mac_addr[3],
 149                                 extra.mac_addr[4], extra.mac_addr[5]);
 150                 d_printf("\n");
 151                 TALLOC_FREE(addrs);
 152                 return true;
 153         } else {
 154                 d_printf("No reply from %s\n\n",addr);
 155                 return false;
 156         }
 157 }
 158
 159
 160 /****************************************************************************
 161  Send out one query.
 162 ****************************************************************************/
 163
 164 static bool query_one(const char *lookup, unsigned int lookup_type)
 165 {
 166         size_t j, count = 0;
 167         uint8_t flags;
 168         struct sockaddr_storage *ip_list=NULL;
 169         NTSTATUS status = NT_STATUS_NOT_FOUND;
 170
 171         if (got_bcast) {
 172                 char addr[INET6_ADDRSTRLEN];
 173                 print_sockaddr(addr, sizeof(addr), &bcast_addr);
 174                 d_printf("querying %s on %s\n", lookup, addr);
 175                 status = name_query(lookup,lookup_type,use_bcast,
 176                                     use_bcast?true:recursion_desired,
 177                                     &bcast_addr, talloc_tos(),
 178                                     &ip_list, &count, &flags);
 179         } else {
 180                 status = name_resolve_bcast(talloc_tos(),
 181                                             lookup,
 182                                             lookup_type,
 183                                             &ip_list,
 184                                             &count);
 185         }
 186
 187         if (!NT_STATUS_IS_OK(status)) {
 188                 return false;
 189         }
 190
 191         if (give_flags) {
 192                 d_printf("Flags: %s\n", query_flags(flags));
 193         }
 194
 195         for (j=0;j<count;j++) {
 196                 char addr[INET6_ADDRSTRLEN];
 197                 if (translate_addresses) {
 198                         char h_name[MAX_DNS_NAME_LENGTH];
 199                         h_name[0] = '\0';
 200                         if (sys_getnameinfo((const struct sockaddr *)&ip_list[j],
 201                                         sizeof(struct sockaddr_storage),
 202                                         h_name, sizeof(h_name),
 203                                         NULL, 0,
 204                                         NI_NAMEREQD)) {
 205                                 continue;
 206                         }
 207                         d_printf("%s, ", h_name);
 208                 }
 209                 print_sockaddr(addr, sizeof(addr), &ip_list[j]);
 210                 d_printf("%s %s<%02x>\n", addr,lookup, lookup_type);
 211                 /* We can only do find_status if the ip address returned
 212                    was valid - ie. name_query returned true.
 213                  */
 214                 if (find_status) {
 215                         if (!do_node_status(lookup, lookup_type, &ip_list[j])) {
 216                                 status = NT_STATUS_UNSUCCESSFUL;
 217                         }
 218                 }
 219         }
 220
 221         TALLOC_FREE(ip_list);
 222
 223         return NT_STATUS_IS_OK(status);
 224 }
 225
 226
 227 /****************************************************************************
 228   main program
 229 ****************************************************************************/
 230 enum nmblookup_cmdline_options {
 231         CMDLINE_RECURSIVE = 1,
 232 };
 233
 234 int main(int argc, const char *argv[])
 235 {
 236         int opt;
 237         unsigned int lookup_type = 0x0;
 238         fstring lookup;
 239         static bool find_master=False;
 240         static bool lookup_by_ip = False;
 241         poptContext pc = NULL;
 242         TALLOC_CTX *frame = talloc_stackframe();
 243         int rc = 0;
 244         bool ok;
 245
 246         struct poptOption long_options[] = {
 247                 POPT_AUTOHELP
 248                 {
 249                         .longName   = "broadcast",
 250                         .shortName  = 'B',
 251                         .argInfo    = POPT_ARG_STRING,
 252                         .arg        = NULL,
 253                         .val        = 'B',
 254                         .descrip    = "Specify address to use for broadcasts",
 255                         .argDescrip = "BROADCAST-ADDRESS",
 256                 },
 257                 {
 258                         .longName   = "flags",
 259                         .shortName  = 'f',
 260                         .argInfo    = POPT_ARG_NONE,
 261                         .arg        = NULL,
 262                         .val        = 'f',
 263                         .descrip    = "List the NMB flags returned",
 264                 },
 265                 {
 266                         .longName   = "unicast",
 267                         .shortName  = 'U',
 268                         .argInfo    = POPT_ARG_STRING,
 269                         .arg        = NULL,
 270                         .val        = 'U',
 271                         .descrip    = "Specify address to use for unicast",
 272                 },
 273                 {
 274                         .longName   = "master-browser",
 275                         .shortName  = 'M',
 276                         .argInfo    = POPT_ARG_NONE,
 277                         .arg        = NULL,
 278                         .val        = 'M',
 279                         .descrip    = "Search for a master browser",
 280                 },
 281                 {
 282                         .longName   = "recursion",
 283                         .shortName  = 0,
 284                         .argInfo    = POPT_ARG_NONE,
 285                         .arg        = NULL,
 286                         .val        = CMDLINE_RECURSIVE,
 287                         .descrip    = "Set recursion desired in package",
 288                 },
 289                 {
 290                         .longName   = "status",
 291                         .shortName  = 'S',
 292                         .argInfo    = POPT_ARG_NONE,
 293                         .arg        = NULL,
 294                         .val        = 'S',
 295                         .descrip    = "Lookup node status as well",
 296                 },
 297                 {
 298                         .longName   = "translate",
 299                         .shortName  = 'T',
 300                         .argInfo    = POPT_ARG_NONE,
 301                         .arg        = NULL,
 302                         .val        = 'T',
 303                         .descrip    = "Translate IP addresses into names",
 304                 },
 305                 {
 306                         .longName   = "root-port",
 307                         .shortName  = 'r',
 308                         .argInfo    = POPT_ARG_NONE,
 309                         .arg        = NULL,
 310                         .val        = 'r',
 311                         .descrip    = "Use root port 137 (Win95 only replies to this)",
 312                 },
 313                 {
 314                         .longName   = "lookup-by-ip",
 315                         .shortName  = 'A',
 316                         .argInfo    = POPT_ARG_NONE,
 317                         .arg        = NULL,
 318                         .val        = 'A',
 319                         .descrip    = "Do a node status on <name> as an IP Address",
 320                 },
 321                 POPT_COMMON_SAMBA
 322                 POPT_COMMON_CONNECTION
 323                 POPT_COMMON_VERSION
 324                 POPT_TABLEEND
 325         };
 326
 327         *lookup = 0;
 328
 329         smb_init_locale();
 330
 331         ok = samba_cmdline_init(frame,
 332                                 SAMBA_CMDLINE_CONFIG_CLIENT,
 333                                 false /* require_smbconf */);
 334         if (!ok) {
 335                 DBG_ERR("Failed to init cmdline parser!\n");
 336                 TALLOC_FREE(frame);
 337                 exit(1);
 338         }
 339
 340         pc = samba_popt_get_context(getprogname(),
 341                                     argc,
 342                                     argv,
 343                                     long_options,
 344                                     POPT_CONTEXT_KEEP_FIRST);
 345         if (pc == NULL) {
 346                 DBG_ERR("Failed to setup popt context!\n");
 347                 TALLOC_FREE(frame);
 348                 exit(1);
 349         }
 350
 351         poptSetOtherOptionHelp(pc, "<NODE> ...");
 352
 353         while ((opt = poptGetNextOpt(pc)) != -1) {
 354                 switch (opt) {
 355                 case 'f':
 356                         give_flags = true;
 357                         break;
 358                 case 'M':
 359                         find_master = true;
 360                         break;
 361                 case CMDLINE_RECURSIVE:
 362                         recursion_desired = true;
 363                         break;
 364                 case 'S':
 365                         find_status = true;
 366                         break;
 367                 case 'r':
 368                         RootPort = true;
 369                         break;
 370                 case 'A':
 371                         lookup_by_ip = true;
 372                         break;
 373                 case 'B':
 374                         if (interpret_string_addr(&bcast_addr,
 375                                         poptGetOptArg(pc),
 376                                         NI_NUMERICHOST)) {
 377                                 got_bcast = True;
 378                                 use_bcast = True;
 379                         }
 380                         break;
 381                 case 'U':
 382                         if (interpret_string_addr(&bcast_addr,
 383                                         poptGetOptArg(pc),
 384                                         0)) {
 385                                 got_bcast = True;
 386                                 use_bcast = False;
 387                         }
 388                         break;
 389                 case 'T':
 390                         translate_addresses = !translate_addresses;
 391                         break;
 392                 case POPT_ERROR_BADOPT:
 393                         fprintf(stderr, "\nInvalid option %s: %s\n\n",
 394                                 poptBadOption(pc, 0), poptStrerror(opt));
 395                         poptPrintUsage(pc, stderr, 0);
 396                         exit(1);
 397                 }
 398         }
 399
 400         poptGetArg(pc); /* Remove argv[0] */
 401
 402         if(!poptPeekArg(pc)) {
 403                 poptPrintUsage(pc, stderr, 0);
 404                 rc = 1;
 405                 goto out;
 406         }
 407
 408         if (!open_sockets()) {
 409                 rc = 1;
 410                 goto out;
 411         }
 412
 413         while(poptPeekArg(pc)) {
 414                 char *p;
 415                 struct in_addr ip;
 416                 size_t nbt_len;
 417
 418                 fstrcpy(lookup,poptGetArg(pc));
 419
 420                 if(lookup_by_ip) {
 421                         struct sockaddr_storage ss;
 422                         ip = interpret_addr2(lookup);
 423                         in_addr_to_sockaddr_storage(&ss, ip);
 424                         fstrcpy(lookup,"*");
 425                         if (!do_node_status(lookup, lookup_type, &ss)) {
 426                                 rc = 1;
 427                         }
 428                         continue;
 429                 }
 430
 431                 if (find_master) {
 432                         if (*lookup == '-') {
 433                                 fstrcpy(lookup,"\01\02__MSBROWSE__\02");
 434                                 lookup_type = 1;
 435                         } else {
 436                                 lookup_type = 0x1d;
 437                         }
 438                 }
 439
 440                 p = strchr_m(lookup,'#');
 441                 if (p) {
 442                         *p = '\0';
 443                         sscanf(++p,"%x",&lookup_type);
 444                 }
 445
 446                 nbt_len = strlen(lookup);
 447                 if (nbt_len > MAX_NETBIOSNAME_LEN - 1) {
 448                         d_printf("The specified netbios name [%s] is too long!\n",
 449                                  lookup);
 450                         continue;
 451                 }
 452
 453
 454                 if (!query_one(lookup, lookup_type)) {
 455                         rc = 1;
 456                         d_printf( "name_query failed to find name %s", lookup );
 457                         if( 0 != lookup_type ) {
 458                                 d_printf( "#%02x", lookup_type );
 459                         }
 460                         d_printf( "\n" );
 461                 }
 462         }
 463
 464 out:
 465         poptFreeContext(pc);
 466         TALLOC_FREE(frame);
 467         return rc;
 468 }