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(int fd,
 110                 const char *name,
 111                 int type,
 112                 struct sockaddr_storage *pss)
 113 {
 114         struct nmb_name nname;
 115         int count, i, j;
 116         NODE_STATUS_STRUCT *status;
 117         struct node_status_extra extra;
 118         fstring cleanname;
 119         char addr[INET6_ADDRSTRLEN];
 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(fd, &nname, pss, &count, &extra);
 125         if (status) {
 126                 for (i=0;i<count;i++) {
 127                         pull_ascii_fstring(cleanname, status[i].name);
 128                         for (j=0;cleanname[j];j++) {
 129                                 if (!isprint((int)cleanname[j])) {
 130                                         cleanname[j] = '.';
 131                                 }
 132                         }
 133                         d_printf("\t%-15s <%02x> - %s\n",
 134                                cleanname,status[i].type,
 135                                node_status_flags(status[i].flags));
 136                 }
 137                 d_printf("\n\tMAC Address = %02X-%02X-%02X-%02X-%02X-%02X\n",
 138                                 extra.mac_addr[0], extra.mac_addr[1],
 139                                 extra.mac_addr[2], extra.mac_addr[3],
 140                                 extra.mac_addr[4], extra.mac_addr[5]);
 141                 d_printf("\n");
 142                 SAFE_FREE(status);
 143         } else {
 144                 d_printf("No reply from %s\n\n",addr);
 145         }
 146 }
 147
 148
 149 /****************************************************************************
 150  Send out one query.
 151 ****************************************************************************/
 152
 153 static bool query_one(const char *lookup, unsigned int lookup_type)
 154 {
 155         int j, count, flags = 0;
 156         struct sockaddr_storage *ip_list=NULL;
 157
 158         if (got_bcast) {
 159                 char addr[INET6_ADDRSTRLEN];
 160                 print_sockaddr(addr, sizeof(addr), &bcast_addr);
 161                 d_printf("querying %s on %s\n", lookup, addr);
 162                 ip_list = name_query(ServerFD,lookup,lookup_type,use_bcast,
 163                                      use_bcast?true:recursion_desired,
 164                                      &bcast_addr, &count, &flags, NULL);
 165         } else {
 166                 const struct in_addr *bcast;
 167                 for (j=iface_count() - 1;
 168                      !ip_list && j >= 0;
 169                      j--) {
 170                         char addr[INET6_ADDRSTRLEN];
 171                         struct sockaddr_storage bcast_ss;
 172
 173                         bcast = iface_n_bcast_v4(j);
 174                         if (!bcast) {
 175                                 continue;
 176                         }
 177                         in_addr_to_sockaddr_storage(&bcast_ss, *bcast);
 178                         print_sockaddr(addr, sizeof(addr), &bcast_ss);
 179                         d_printf("querying %s on %s\n",
 180                                lookup, addr);
 181                         ip_list = name_query(ServerFD,lookup,lookup_type,
 182                                              use_bcast,
 183                                              use_bcast?True:recursion_desired,
 184                                              &bcast_ss,&count, &flags, NULL);
 185                 }
 186         }
 187
 188         if (!ip_list) {
 189                 return false;
 190         }
 191
 192         if (give_flags) {
 193                 d_printf("Flags: %s\n", query_flags(flags));
 194         }
 195
 196         for (j=0;j<count;j++) {
 197                 char addr[INET6_ADDRSTRLEN];
 198                 if (translate_addresses) {
 199                         char h_name[MAX_DNS_NAME_LENGTH];
 200                         h_name[0] = '\0';
 201                         if (sys_getnameinfo((const struct sockaddr *)&ip_list[j],
 202                                         sizeof(struct sockaddr_storage),
 203                                         h_name, sizeof(h_name),
 204                                         NULL, 0,
 205                                         NI_NAMEREQD)) {
 206                                 continue;
 207                         }
 208                         d_printf("%s, ", h_name);
 209                 }
 210                 print_sockaddr(addr, sizeof(addr), &ip_list[j]);
 211                 d_printf("%s %s<%02x>\n", addr,lookup, lookup_type);
 212                 /* We can only do find_status if the ip address returned
 213                    was valid - ie. name_query returned true.
 214                  */
 215                 if (find_status) {
 216                         do_node_status(ServerFD, lookup,
 217                                         lookup_type, &ip_list[j]);
 218                 }
 219         }
 220
 221         free(ip_list);
 222
 223         return (ip_list != NULL);
 224 }
 225
 226
 227 /****************************************************************************
 228   main program
 229 ****************************************************************************/
 230 int main(int argc,char *argv[])
 231 {
 232         int opt;
 233         unsigned int lookup_type = 0x0;
 234         fstring lookup;
 235         static bool find_master=False;
 236         static bool lookup_by_ip = False;
 237         poptContext pc;
 238         TALLOC_CTX *frame = talloc_stackframe();
 239
 240         struct poptOption long_options[] = {
 241                 POPT_AUTOHELP
 242                 { "broadcast", 'B', POPT_ARG_STRING, NULL, 'B', "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
 243                 { "flags", 'f', POPT_ARG_NONE, NULL, 'f', "List the NMB flags returned" },
 244                 { "unicast", 'U', POPT_ARG_STRING, NULL, 'U', "Specify address to use for unicast" },
 245                 { "master-browser", 'M', POPT_ARG_NONE, NULL, 'M', "Search for a master browser" },
 246                 { "recursion", 'R', POPT_ARG_NONE, NULL, 'R', "Set recursion desired in package" },
 247                 { "status", 'S', POPT_ARG_NONE, NULL, 'S', "Lookup node status as well" },
 248                 { "translate", 'T', POPT_ARG_NONE, NULL, 'T', "Translate IP addresses into names" },
 249                 { "root-port", 'r', POPT_ARG_NONE, NULL, 'r', "Use root port 137 (Win95 only replies to this)" },
 250                 { "lookup-by-ip", 'A', POPT_ARG_NONE, NULL, 'A', "Do a node status on <name> as an IP Address" },
 251                 POPT_COMMON_SAMBA
 252                 POPT_COMMON_CONNECTION
 253                 { 0, 0, 0, 0 }
 254         };
 255
 256         *lookup = 0;
 257
 258         load_case_tables();
 259
 260         setup_logging(argv[0], DEBUG_STDOUT);
 261
 262         pc = poptGetContext("nmblookup", argc, (const char **)argv,
 263                         long_options, POPT_CONTEXT_KEEP_FIRST);
 264
 265         poptSetOtherOptionHelp(pc, "<NODE> ...");
 266
 267         while ((opt = poptGetNextOpt(pc)) != -1) {
 268                 switch (opt) {
 269                 case 'f':
 270                         give_flags = true;
 271                         break;
 272                 case 'M':
 273                         find_master = true;
 274                         break;
 275                 case 'R':
 276                         recursion_desired = true;
 277                         break;
 278                 case 'S':
 279                         find_status = true;
 280                         break;
 281                 case 'r':
 282                         RootPort = true;
 283                         break;
 284                 case 'A':
 285                         lookup_by_ip = true;
 286                         break;
 287                 case 'B':
 288                         if (interpret_string_addr(&bcast_addr,
 289                                         poptGetOptArg(pc),
 290                                         NI_NUMERICHOST)) {
 291                                 got_bcast = True;
 292                                 use_bcast = True;
 293                         }
 294                         break;
 295                 case 'U':
 296                         if (interpret_string_addr(&bcast_addr,
 297                                         poptGetOptArg(pc),
 298                                         0)) {
 299                                 got_bcast = True;
 300                                 use_bcast = False;
 301                         }
 302                         break;
 303                 case 'T':
 304                         translate_addresses = !translate_addresses;
 305                         break;
 306                 }
 307         }
 308
 309         poptGetArg(pc); /* Remove argv[0] */
 310
 311         if(!poptPeekArg(pc)) {
 312                 poptPrintUsage(pc, stderr, 0);
 313                 exit(1);
 314         }
 315
 316         if (!lp_load(get_dyn_CONFIGFILE(),True,False,False,True)) {
 317                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 318                                 get_dyn_CONFIGFILE());
 319         }
 320
 321         load_interfaces();
 322         if (!open_sockets()) {
 323                 return(1);
 324         }
 325
 326         while(poptPeekArg(pc)) {
 327                 char *p;
 328                 struct in_addr ip;
 329
 330                 fstrcpy(lookup,poptGetArg(pc));
 331
 332                 if(lookup_by_ip) {
 333                         struct sockaddr_storage ss;
 334                         ip = interpret_addr2(lookup);
 335                         in_addr_to_sockaddr_storage(&ss, ip);
 336                         fstrcpy(lookup,"*");
 337                         do_node_status(ServerFD, lookup, lookup_type, &ss);
 338                         continue;
 339                 }
 340
 341                 if (find_master) {
 342                         if (*lookup == '-') {
 343                                 fstrcpy(lookup,"\01\02__MSBROWSE__\02");
 344                                 lookup_type = 1;
 345                         } else {
 346                                 lookup_type = 0x1d;
 347                         }
 348                 }
 349
 350                 p = strchr_m(lookup,'#');
 351                 if (p) {
 352                         *p = '\0';
 353                         sscanf(++p,"%x",&lookup_type);
 354                 }
 355
 356                 if (!query_one(lookup, lookup_type)) {
 357                         d_printf( "name_query failed to find name %s", lookup );
 358                         if( 0 != lookup_type ) {
 359                                 d_printf( "#%02x", lookup_type );
 360                         }
 361                         d_printf( "\n" );
 362                 }
 363         }
 364
 365         poptFreeContext(pc);
 366         TALLOC_FREE(frame);
 367         return(0);
 368 }