source: vendor/current/source3/utils/nmblookup.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 9.8 KB
Line 
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
26static bool give_flags = false;
27static bool use_bcast = true;
28static bool got_bcast = false;
29static struct sockaddr_storage bcast_addr;
30static bool recursion_desired = false;
31static bool translate_addresses = false;
32static int ServerFD= -1;
33static bool RootPort = false;
34static bool find_status = false;
35
36/****************************************************************************
37 Open the socket communication.
38**************************************************************************/
39
40static 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/****************************************************************************
67turn a node status flags field into a string
68****************************************************************************/
69static 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
91static 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
110static 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
157static 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****************************************************************************/
221int 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
371out:
372 poptFreeContext(pc);
373 TALLOC_FREE(frame);
374 return rc;
375}
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