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_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 void 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         } else {
 146                 d_printf("No reply from %s\n\n",addr);
 147         }
 148 }
 149
 150
 151 /****************************************************************************
 152  Send out one query.
 153 ****************************************************************************/
 154
 155 static bool query_one(const char *lookup, unsigned int lookup_type)
 156 {
 157         int j, count;
 158         uint8_t flags;
 159         struct sockaddr_storage *ip_list=NULL;
 160         NTSTATUS status = NT_STATUS_NOT_FOUND;
 161
 162         if (got_bcast) {
 163                 char addr[INET6_ADDRSTRLEN];
 164                 print_sockaddr(addr, sizeof(addr), &bcast_addr);
 165                 d_printf("querying %s on %s\n", lookup, addr);
 166                 status = name_query(lookup,lookup_type,use_bcast,
 167                                     use_bcast?true:recursion_desired,
 168                                     &bcast_addr, talloc_tos(),
 169                                     &ip_list, &count, &flags);
 170         } else {
 171                 const struct in_addr *bcast;
 172                 for (j=iface_count() - 1;
 173                      !ip_list && j >= 0;
 174                      j--) {
 175                         char addr[INET6_ADDRSTRLEN];
 176                         struct sockaddr_storage bcast_ss;
 177
 178                         bcast = iface_n_bcast_v4(j);
 179                         if (!bcast) {
 180                                 continue;
 181                         }
 182                         in_addr_to_sockaddr_storage(&bcast_ss, *bcast);
 183                         print_sockaddr(addr, sizeof(addr), &bcast_ss);
 184                         d_printf("querying %s on %s\n",
 185                                lookup, addr);
 186                         status = name_query(lookup,lookup_type,
 187                                             use_bcast,
 188                                             use_bcast?True:recursion_desired,
 189                                             &bcast_ss, talloc_tos(),
 190                                             &ip_list, &count, &flags);
 191                 }
 192         }
 193
 194         if (!NT_STATUS_IS_OK(status)) {
 195                 return false;
 196         }
 197
 198         if (give_flags) {
 199                 d_printf("Flags: %s\n", query_flags(flags));
 200         }
 201
 202         for (j=0;j<count;j++) {
 203                 char addr[INET6_ADDRSTRLEN];
 204                 if (translate_addresses) {
 205                         char h_name[MAX_DNS_NAME_LENGTH];
 206                         h_name[0] = '\0';
 207                         if (sys_getnameinfo((const struct sockaddr *)&ip_list[j],
 208                                         sizeof(struct sockaddr_storage),
 209                                         h_name, sizeof(h_name),
 210                                         NULL, 0,
 211                                         NI_NAMEREQD)) {
 212                                 continue;
 213                         }
 214                         d_printf("%s, ", h_name);
 215                 }
 216                 print_sockaddr(addr, sizeof(addr), &ip_list[j]);
 217                 d_printf("%s %s<%02x>\n", addr,lookup, lookup_type);
 218                 /* We can only do find_status if the ip address returned
 219                    was valid - ie. name_query returned true.
 220                  */
 221                 if (find_status) {
 222                         do_node_status(lookup, lookup_type, &ip_list[j]);
 223                 }
 224         }
 225
 226         TALLOC_FREE(ip_list);
 227
 228         return NT_STATUS_IS_OK(status);
 229 }
 230
 231
 232 /****************************************************************************
 233   main program
 234 ****************************************************************************/
 235 int main(int argc,char *argv[])
 236 {
 237         int opt;
 238         unsigned int lookup_type = 0x0;
 239         fstring lookup;
 240         static bool find_master=False;
 241         static bool lookup_by_ip = False;
 242         poptContext pc;
 243         TALLOC_CTX *frame = talloc_stackframe();
 244
 245         struct poptOption long_options[] = {
 246                 POPT_AUTOHELP
 247                 { "broadcast", 'B', POPT_ARG_STRING, NULL, 'B', "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
 248                 { "flags", 'f', POPT_ARG_NONE, NULL, 'f', "List the NMB flags returned" },
 249                 { "unicast", 'U', POPT_ARG_STRING, NULL, 'U', "Specify address to use for unicast" },
 250                 { "master-browser", 'M', POPT_ARG_NONE, NULL, 'M', "Search for a master browser" },
 251                 { "recursion", 'R', POPT_ARG_NONE, NULL, 'R', "Set recursion desired in package" },
 252                 { "status", 'S', POPT_ARG_NONE, NULL, 'S', "Lookup node status as well" },
 253                 { "translate", 'T', POPT_ARG_NONE, NULL, 'T', "Translate IP addresses into names" },
 254                 { "root-port", 'r', POPT_ARG_NONE, NULL, 'r', "Use root port 137 (Win95 only replies to this)" },
 255                 { "lookup-by-ip", 'A', POPT_ARG_NONE, NULL, 'A', "Do a node status on <name> as an IP Address" },
 256                 POPT_COMMON_SAMBA
 257                 POPT_COMMON_CONNECTION
 258                 { 0, 0, 0, 0 }
 259         };
 260
 261         *lookup = 0;
 262
 263         load_case_tables();
 264
 265         setup_logging(argv[0], DEBUG_STDOUT);
 266
 267         pc = poptGetContext("nmblookup", argc, (const char **)argv,
 268                         long_options, POPT_CONTEXT_KEEP_FIRST);
 269
 270         poptSetOtherOptionHelp(pc, "<NODE> ...");
 271
 272         while ((opt = poptGetNextOpt(pc)) != -1) {
 273                 switch (opt) {
 274                 case 'f':
 275                         give_flags = true;
 276                         break;
 277                 case 'M':
 278                         find_master = true;
 279                         break;
 280                 case 'R':
 281                         recursion_desired = true;
 282                         break;
 283                 case 'S':
 284                         find_status = true;
 285                         break;
 286                 case 'r':
 287                         RootPort = true;
 288                         break;
 289                 case 'A':
 290                         lookup_by_ip = true;
 291                         break;
 292                 case 'B':
 293                         if (interpret_string_addr(&bcast_addr,
 294                                         poptGetOptArg(pc),
 295                                         NI_NUMERICHOST)) {
 296                                 got_bcast = True;
 297                                 use_bcast = True;
 298                         }
 299                         break;
 300                 case 'U':
 301                         if (interpret_string_addr(&bcast_addr,
 302                                         poptGetOptArg(pc),
 303                                         0)) {
 304                                 got_bcast = True;
 305                                 use_bcast = False;
 306                         }
 307                         break;
 308                 case 'T':
 309                         translate_addresses = !translate_addresses;
 310                         break;
 311                 }
 312         }
 313
 314         poptGetArg(pc); /* Remove argv[0] */
 315
 316         if(!poptPeekArg(pc)) {
 317                 poptPrintUsage(pc, stderr, 0);
 318                 exit(1);
 319         }
 320
 321         if (!lp_load(get_dyn_CONFIGFILE(),True,False,False,True)) {
 322                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 323                                 get_dyn_CONFIGFILE());
 324         }
 325
 326         load_interfaces();
 327         if (!open_sockets()) {
 328                 return(1);
 329         }
 330
 331         while(poptPeekArg(pc)) {
 332                 char *p;
 333                 struct in_addr ip;
 334
 335                 fstrcpy(lookup,poptGetArg(pc));
 336
 337                 if(lookup_by_ip) {
 338                         struct sockaddr_storage ss;
 339                         ip = interpret_addr2(lookup);
 340                         in_addr_to_sockaddr_storage(&ss, ip);
 341                         fstrcpy(lookup,"*");
 342                         do_node_status(lookup, lookup_type, &ss);
 343                         continue;
 344                 }
 345
 346                 if (find_master) {
 347                         if (*lookup == '-') {
 348                                 fstrcpy(lookup,"\01\02__MSBROWSE__\02");
 349                                 lookup_type = 1;
 350                         } else {
 351                                 lookup_type = 0x1d;
 352                         }
 353                 }
 354
 355                 p = strchr_m(lookup,'#');
 356                 if (p) {
 357                         *p = '\0';
 358                         sscanf(++p,"%x",&lookup_type);
 359                 }
 360
 361                 if (!query_one(lookup, lookup_type)) {
 362                         d_printf( "name_query failed to find name %s", lookup );
 363                         if( 0 != lookup_type ) {
 364                                 d_printf( "#%02x", lookup_type );
 365                         }
 366                         d_printf( "\n" );
 367                 }
 368         }
 369
 370         poptFreeContext(pc);
 371         TALLOC_FREE(frame);
 372         return(0);
 373 }