source: branches/samba-3.2.x/source/utils/nmblookup.c@ 340

Last change on this file since 340 was 133, checked in by Paul Smedley, 17 years ago

Update trunk to 3.2.0pre3
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
24extern bool AllowDebugChange;
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_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 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
154static 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 safe_free(ip_list);
223
224 return (ip_list != NULL);
225}
226
227
228/****************************************************************************
229 main program
230****************************************************************************/
231int 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 (void)interpret_addr2(&ip, 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}
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