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
  25 static bool give_flags = false;
  26 static bool use_bcast = true;
  27 static bool got_bcast = false;
  28 static struct sockaddr_storage bcast_addr;
  29 static bool recursion_desired = false;
  30 static bool translate_addresses = false;
  31 static int ServerFD= -1;
  32 static bool RootPort = false;
  33 static bool find_status = false;
  34
  35 /****************************************************************************
  36  Open the socket communication.
  37 **************************************************************************/
  38
  39 static bool open_sockets(void)
  40 {
  41         struct sockaddr_storage ss;
  42         const char *sock_addr = lp_socket_address();
  43
  44         if (!interpret_string_addr(&ss, sock_addr,
  45                                 AI_NUMERICHOST|AI_PASSIVE)) {
  46                 DEBUG(0,("open_sockets: unable to get socket address "
  47                                         "from string %s", sock_addr));
  48                 return false;
  49         }
  50         ServerFD = open_socket_in( SOCK_DGRAM,
  51                                 (RootPort ? 137 : 0),
  52                                 (RootPort ?   0 : 3),
  53                                 &ss, true );
  54
  55         if (ServerFD == -1) {
  56                 return false;
  57         }
  58
  59         set_socket_options( ServerFD, "SO_BROADCAST" );
  60
  61         DEBUG(3, ("Socket opened.\n"));
  62         return true;
  63 }
  64
  65 /****************************************************************************
  66 turn a node status flags field into a string
  67 ****************************************************************************/
  68 static char *node_status_flags(unsigned char flags)
  69 {
  70         static fstring ret;
  71         fstrcpy(ret,"");
  72
  73         fstrcat(ret, (flags & 0x80) ? "<GROUP> " : "        ");
  74         if ((flags & 0x60) == 0x00) fstrcat(ret,"B ");
  75         if ((flags & 0x60) == 0x20) fstrcat(ret,"P ");
  76         if ((flags & 0x60) == 0x40) fstrcat(ret,"M ");
  77         if ((flags & 0x60) == 0x60) fstrcat(ret,"H ");
  78         if (flags & 0x10) fstrcat(ret,"<DEREGISTERING> ");
  79         if (flags & 0x08) fstrcat(ret,"<CONFLICT> ");
  80         if (flags & 0x04) fstrcat(ret,"<ACTIVE> ");
  81         if (flags & 0x02) fstrcat(ret,"<PERMANENT> ");
  82
  83         return ret;
  84 }
  85
  86 /****************************************************************************
  87  Turn the NMB Query flags into a string.
  88 ****************************************************************************/
  89
  90 static char *query_flags(int flags)
  91 {
  92         static fstring ret1;
  93         fstrcpy(ret1, "");
  94
  95         if (flags & NM_FLAGS_RS) fstrcat(ret1, "Response ");
  96         if (flags & NM_FLAGS_AA) fstrcat(ret1, "Authoritative ");
  97         if (flags & NM_FLAGS_TC) fstrcat(ret1, "Truncated ");
  98         if (flags & NM_FLAGS_RD) fstrcat(ret1, "Recursion_Desired ");
  99         if (flags & NM_FLAGS_RA) fstrcat(ret1, "Recursion_Available ");
 100         if (flags & NM_FLAGS_B)  fstrcat(ret1, "Broadcast ");
 101
 102         return ret1;
 103 }
 104
 105 /****************************************************************************
 106  Do a node status query.
 107 ****************************************************************************/
 108
 109 static void do_node_status(const char *name,
 110                 int type,
 111                 struct sockaddr_storage *pss)
 112 {
 113         struct nmb_name nname;
 114         int count, i, j;
 115         struct node_status *addrs;
 116         struct node_status_extra extra;
 117         fstring cleanname;
 118         char addr[INET6_ADDRSTRLEN];
 119         NTSTATUS status;
 120
 121         print_sockaddr(addr, sizeof(addr), pss);
 122         d_printf("Looking up status of %s\n",addr);
 123         make_nmb_name(&nname, name, type);
 124         status = node_status_query(talloc_tos(), &nname, pss,
 125                                    &addrs, &count, &extra);
 126         if (NT_STATUS_IS_OK(status)) {
 127                 for (i=0;i<count;i++) {
 128                         pull_ascii_fstring(cleanname, addrs[i].name);
 129                         for (j=0;cleanname[j];j++) {
 130                                 if (!isprint((int)cleanname[j])) {
 131                                         cleanname[j] = '.';
 132                                 }
 133                         }
 134                         d_printf("\t%-15s <%02x> - %s\n",
 135                                cleanname,addrs[i].type,
 136                                node_status_flags(addrs[i].flags));
 137                 }
 138                 d_printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
 139                                 extra.mac_addr[0], extra.mac_addr[1],
 140                                 extra.mac_addr[2], extra.mac_addr[3],
 141                                 extra.mac_addr[4], extra.mac_addr[5]);
 142                 d_printf("\n");
 143                 TALLOC_FREE(addrs);
 144         } else {
 145                 d_printf("No reply from %s\n\n",addr);
 146         }
 147 }
 148
 149
 150 /****************************************************************************
 151  Send out one query.
 152 ****************************************************************************/
 153
 154 static bool query_one(const char *lookup, unsigned int lookup_type)
 155 {
 156         int j, count;
 157         uint8_t flags;
 158         struct sockaddr_storage *ip_list=NULL;
 159         NTSTATUS status = NT_STATUS_NOT_FOUND;
 160
 161         if (got_bcast) {
 162                 char addr[INET6_ADDRSTRLEN];
 163                 print_sockaddr(addr, sizeof(addr), &bcast_addr);
 164                 d_printf("querying %s on %s\n", lookup, addr);
 165                 status = name_query(lookup,lookup_type,use_bcast,
 166                                     use_bcast?true:recursion_desired,
 167                                     &bcast_addr, talloc_tos(),
 168                                     &ip_list, &count, &flags);
 169         } else {
 170                 const struct in_addr *bcast;
 171                 for (j=iface_count() - 1;
 172                      !ip_list && j >= 0;
 173                      j--) {
 174                         char addr[INET6_ADDRSTRLEN];
 175                         struct sockaddr_storage bcast_ss;
 176
 177                         bcast = iface_n_bcast_v4(j);
 178                         if (!bcast) {
 179                                 continue;
 180                         }
 181                         in_addr_to_sockaddr_storage(&bcast_ss, *bcast);
 182                         print_sockaddr(addr, sizeof(addr), &bcast_ss);
 183                         d_printf("querying %s on %s\n",
 184                                lookup, addr);
 185                         status = name_query(lookup,lookup_type,
 186                                             use_bcast,
 187                                             use_bcast?True:recursion_desired,
 188                                             &bcast_ss, talloc_tos(),
 189                                             &ip_list, &count, &flags);
 190                 }
 191         }
 192
 193         if (!NT_STATUS_IS_OK(status)) {
 194                 return false;
 195         }
 196
 197         if (give_flags) {
 198                 d_printf("Flags: %s\n", query_flags(flags));
 199         }
 200
 201         for (j=0;j<count;j++) {
 202                 char addr[INET6_ADDRSTRLEN];
 203                 if (translate_addresses) {
 204                         char h_name[MAX_DNS_NAME_LENGTH];
 205                         h_name[0] = '\0';
 206                         if (sys_getnameinfo((const struct sockaddr *)&ip_list[j],
 207                                         sizeof(struct sockaddr_storage),
 208                                         h_name, sizeof(h_name),
 209                                         NULL, 0,
 210                                         NI_NAMEREQD)) {
 211                                 continue;
 212                         }
 213                         d_printf("%s, ", h_name);
 214                 }
 215                 print_sockaddr(addr, sizeof(addr), &ip_list[j]);
 216                 d_printf("%s %s<%02x>\n", addr,lookup, lookup_type);
 217                 /* We can only do find_status if the ip address returned
 218                    was valid - ie. name_query returned true.
 219                  */
 220                 if (find_status) {
 221                         do_node_status(lookup, lookup_type, &ip_list[j]);
 222                 }
 223         }
 224
 225         TALLOC_FREE(ip_list);
 226
 227         return NT_STATUS_IS_OK(status);
 228 }
 229
 230
 231 /****************************************************************************
 232   main program
 233 ****************************************************************************/
 234 int main(int argc,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;
 242         TALLOC_CTX *frame = talloc_stackframe();
 243
 244         struct poptOption long_options[] = {
 245                 POPT_AUTOHELP
 246                 { "broadcast", 'B', POPT_ARG_STRING, NULL, 'B', "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
 247                 { "flags", 'f', POPT_ARG_NONE, NULL, 'f', "List the NMB flags returned" },
 248                 { "unicast", 'U', POPT_ARG_STRING, NULL, 'U', "Specify address to use for unicast" },
 249                 { "master-browser", 'M', POPT_ARG_NONE, NULL, 'M', "Search for a master browser" },
 250                 { "recursion", 'R', POPT_ARG_NONE, NULL, 'R', "Set recursion desired in package" },
 251                 { "status", 'S', POPT_ARG_NONE, NULL, 'S', "Lookup node status as well" },
 252                 { "translate", 'T', POPT_ARG_NONE, NULL, 'T', "Translate IP addresses into names" },
 253                 { "root-port", 'r', POPT_ARG_NONE, NULL, 'r', "Use root port 137 (Win95 only replies to this)" },
 254                 { "lookup-by-ip", 'A', POPT_ARG_NONE, NULL, 'A', "Do a node status on <name> as an IP Address" },
 255                 POPT_COMMON_SAMBA
 256                 POPT_COMMON_CONNECTION
 257                 { 0, 0, 0, 0 }
 258         };
 259
 260         *lookup = 0;
 261
 262         load_case_tables();
 263
 264         setup_logging(argv[0], DEBUG_STDOUT);
 265
 266         pc = poptGetContext("nmblookup", argc, (const char **)argv,
 267                         long_options, POPT_CONTEXT_KEEP_FIRST);
 268
 269         poptSetOtherOptionHelp(pc, "<NODE> ...");
 270
 271         while ((opt = poptGetNextOpt(pc)) != -1) {
 272                 switch (opt) {
 273                 case 'f':
 274                         give_flags = true;
 275                         break;
 276                 case 'M':
 277                         find_master = true;
 278                         break;
 279                 case 'R':
 280                         recursion_desired = true;
 281                         break;
 282                 case 'S':
 283                         find_status = true;
 284                         break;
 285                 case 'r':
 286                         RootPort = true;
 287                         break;
 288                 case 'A':
 289                         lookup_by_ip = true;
 290                         break;
 291                 case 'B':
 292                         if (interpret_string_addr(&bcast_addr,
 293                                         poptGetOptArg(pc),
 294                                         NI_NUMERICHOST)) {
 295                                 got_bcast = True;
 296                                 use_bcast = True;
 297                         }
 298                         break;
 299                 case 'U':
 300                         if (interpret_string_addr(&bcast_addr,
 301                                         poptGetOptArg(pc),
 302                                         0)) {
 303                                 got_bcast = True;
 304                                 use_bcast = False;
 305                         }
 306                         break;
 307                 case 'T':
 308                         translate_addresses = !translate_addresses;
 309                         break;
 310                 }
 311         }
 312
 313         poptGetArg(pc); /* Remove argv[0] */
 314
 315         if(!poptPeekArg(pc)) {
 316                 poptPrintUsage(pc, stderr, 0);
 317                 exit(1);
 318         }
 319
 320         if (!lp_load(get_dyn_CONFIGFILE(),True,False,False,True)) {
 321                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 322                                 get_dyn_CONFIGFILE());
 323         }
 324
 325         load_interfaces();
 326         if (!open_sockets()) {
 327                 return(1);
 328         }
 329
 330         while(poptPeekArg(pc)) {
 331                 char *p;
 332                 struct in_addr ip;
 333
 334                 fstrcpy(lookup,poptGetArg(pc));
 335
 336                 if(lookup_by_ip) {
 337                         struct sockaddr_storage ss;
 338                         ip = interpret_addr2(lookup);
 339                         in_addr_to_sockaddr_storage(&ss, ip);
 340                         fstrcpy(lookup,"*");
 341                         do_node_status(lookup, lookup_type, &ss);
 342                         continue;
 343                 }
 344
 345                 if (find_master) {
 346                         if (*lookup == '-') {
 347                                 fstrcpy(lookup,"\01\02__MSBROWSE__\02");
 348                                 lookup_type = 1;
 349                         } else {
 350                                 lookup_type = 0x1d;
 351                         }
 352                 }
 353
 354                 p = strchr_m(lookup,'#');
 355                 if (p) {
 356                         *p = '\0';
 357                         sscanf(++p,"%x",&lookup_type);
 358                 }
 359
 360                 if (!query_one(lookup, lookup_type)) {
 361                         d_printf( "name_query failed to find name %s", lookup );
 362                         if( 0 != lookup_type ) {
 363                                 d_printf( "#%02x", lookup_type );
 364                         }
 365                         d_printf( "\n" );
 366                 }
 367         }
 368
 369         poptFreeContext(pc);
 370         TALLOC_FREE(frame);
 371         return(0);
 372 }