63c9a34dd88c7576b963f1296da6141584bd5bd0
[nivanova/samba-autobuild/.git] / 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
24 extern bool AllowDebugChange;
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(int fd,
111                 const char *name,
112                 int type,
113                 struct sockaddr_storage *pss)
114 {
115         struct nmb_name nname;
116         int count, i, j;
117         NODE_STATUS_STRUCT *status;
118         struct node_status_extra extra;
119         fstring cleanname;
120         char addr[INET6_ADDRSTRLEN];
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(fd, &nname, pss, &count, &extra);
126         if (status) {
127                 for (i=0;i<count;i++) {
128                         pull_ascii_fstring(cleanname, status[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,status[i].type,
136                                node_status_flags(status[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                 SAFE_FREE(status);
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, flags = 0;
157         struct sockaddr_storage *ip_list=NULL;
158
159         if (got_bcast) {
160                 char addr[INET6_ADDRSTRLEN];
161                 print_sockaddr(addr, sizeof(addr), &bcast_addr);
162                 d_printf("querying %s on %s\n", lookup, addr);
163                 ip_list = name_query(ServerFD,lookup,lookup_type,use_bcast,
164                                      use_bcast?true:recursion_desired,
165                                      &bcast_addr, &count, &flags, NULL);
166         } else {
167                 const struct in_addr *bcast;
168                 for (j=iface_count() - 1;
169                      !ip_list && j >= 0;
170                      j--) {
171                         char addr[INET6_ADDRSTRLEN];
172                         struct sockaddr_storage bcast_ss;
173
174                         bcast = iface_n_bcast_v4(j);
175                         if (!bcast) {
176                                 continue;
177                         }
178                         in_addr_to_sockaddr_storage(&bcast_ss, *bcast);
179                         print_sockaddr(addr, sizeof(addr), &bcast_ss);
180                         d_printf("querying %s on %s\n",
181                                lookup, addr);
182                         ip_list = name_query(ServerFD,lookup,lookup_type,
183                                              use_bcast,
184                                              use_bcast?True:recursion_desired,
185                                              &bcast_ss,&count, &flags, NULL);
186                 }
187         }
188
189         if (!ip_list) {
190                 return false;
191         }
192
193         if (give_flags) {
194                 d_printf("Flags: %s\n", query_flags(flags));
195         }
196
197         for (j=0;j<count;j++) {
198                 char addr[INET6_ADDRSTRLEN];
199                 if (translate_addresses) {
200                         char h_name[MAX_DNS_NAME_LENGTH];
201                         h_name[0] = '\0';
202                         if (sys_getnameinfo((const struct sockaddr *)&ip_list[j],
203                                         sizeof(struct sockaddr_storage),
204                                         h_name, sizeof(h_name),
205                                         NULL, 0,
206                                         NI_NAMEREQD)) {
207                                 continue;
208                         }
209                         d_printf("%s, ", h_name);
210                 }
211                 print_sockaddr(addr, sizeof(addr), &ip_list[j]);
212                 d_printf("%s %s<%02x>\n", addr,lookup, lookup_type);
213                 /* We can only do find_status if the ip address returned
214                    was valid - ie. name_query returned true.
215                  */
216                 if (find_status) {
217                         do_node_status(ServerFD, lookup,
218                                         lookup_type, &ip_list[j]);
219                 }
220         }
221
222         free(ip_list);
223
224         return (ip_list != NULL);
225 }
226
227
228 /****************************************************************************
229   main program
230 ****************************************************************************/
231 int main(int argc,char *argv[])
232 {
233         int opt;
234         unsigned int lookup_type = 0x0;
235         fstring lookup;
236         static bool find_master=False;
237         static bool lookup_by_ip = False;
238         poptContext pc;
239         TALLOC_CTX *frame = talloc_stackframe();
240
241         struct poptOption long_options[] = {
242                 POPT_AUTOHELP
243                 { "broadcast", 'B', POPT_ARG_STRING, NULL, 'B', "Specify address to use for broadcasts", "BROADCAST-ADDRESS" },
244                 { "flags", 'f', POPT_ARG_NONE, NULL, 'f', "List the NMB flags returned" },
245                 { "unicast", 'U', POPT_ARG_STRING, NULL, 'U', "Specify address to use for unicast" },
246                 { "master-browser", 'M', POPT_ARG_NONE, NULL, 'M', "Search for a master browser" },
247                 { "recursion", 'R', POPT_ARG_NONE, NULL, 'R', "Set recursion desired in package" },
248                 { "status", 'S', POPT_ARG_NONE, NULL, 'S', "Lookup node status as well" },
249                 { "translate", 'T', POPT_ARG_NONE, NULL, 'T', "Translate IP addresses into names" },
250                 { "root-port", 'r', POPT_ARG_NONE, NULL, 'r', "Use root port 137 (Win95 only replies to this)" },
251                 { "lookup-by-ip", 'A', POPT_ARG_NONE, NULL, 'A', "Do a node status on <name> as an IP Address" },
252                 POPT_COMMON_SAMBA
253                 POPT_COMMON_CONNECTION
254                 { 0, 0, 0, 0 }
255         };
256
257         *lookup = 0;
258
259         load_case_tables();
260
261         setup_logging(argv[0],True);
262
263         pc = poptGetContext("nmblookup", argc, (const char **)argv,
264                         long_options, POPT_CONTEXT_KEEP_FIRST);
265
266         poptSetOtherOptionHelp(pc, "<NODE> ...");
267
268         while ((opt = poptGetNextOpt(pc)) != -1) {
269                 switch (opt) {
270                 case 'f':
271                         give_flags = true;
272                         break;
273                 case 'M':
274                         find_master = true;
275                         break;
276                 case 'R':
277                         recursion_desired = true;
278                         break;
279                 case 'S':
280                         find_status = true;
281                         break;
282                 case 'r':
283                         RootPort = true;
284                         break;
285                 case 'A':
286                         lookup_by_ip = true;
287                         break;
288                 case 'B':
289                         if (interpret_string_addr(&bcast_addr,
290                                         poptGetOptArg(pc),
291                                         NI_NUMERICHOST)) {
292                                 got_bcast = True;
293                                 use_bcast = True;
294                         }
295                         break;
296                 case 'U':
297                         if (interpret_string_addr(&bcast_addr,
298                                         poptGetOptArg(pc),
299                                         0)) {
300                                 got_bcast = True;
301                                 use_bcast = False;
302                         }
303                         break;
304                 case 'T':
305                         translate_addresses = !translate_addresses;
306                         break;
307                 }
308         }
309
310         poptGetArg(pc); /* Remove argv[0] */
311
312         if(!poptPeekArg(pc)) {
313                 poptPrintUsage(pc, stderr, 0);
314                 exit(1);
315         }
316
317         if (!lp_load(get_dyn_CONFIGFILE(),True,False,False,True)) {
318                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
319                                 get_dyn_CONFIGFILE());
320         }
321
322         load_interfaces();
323         if (!open_sockets()) {
324                 return(1);
325         }
326
327         while(poptPeekArg(pc)) {
328                 char *p;
329                 struct in_addr ip;
330
331                 fstrcpy(lookup,poptGetArg(pc));
332
333                 if(lookup_by_ip) {
334                         struct sockaddr_storage ss;
335                         ip = interpret_addr2(lookup);
336                         in_addr_to_sockaddr_storage(&ss, ip);
337                         fstrcpy(lookup,"*");
338                         do_node_status(ServerFD, lookup, lookup_type, &ss);
339                         continue;
340                 }
341
342                 if (find_master) {
343                         if (*lookup == '-') {
344                                 fstrcpy(lookup,"\01\02__MSBROWSE__\02");
345                                 lookup_type = 1;
346                         } else {
347                                 lookup_type = 0x1d;
348                         }
349                 }
350
351                 p = strchr_m(lookup,'#');
352                 if (p) {
353                         *p = '\0';
354                         sscanf(++p,"%x",&lookup_type);
355                 }
356
357                 if (!query_one(lookup, lookup_type)) {
358                         d_printf( "name_query failed to find name %s", lookup );
359                         if( 0 != lookup_type ) {
360                                 d_printf( "#%02x", lookup_type );
361                         }
362                         d_printf( "\n" );
363                 }
364         }
365
366         poptFreeContext(pc);
367         TALLOC_FREE(frame);
368         return(0);
369 }