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