source: trunk-3.0/source/utils/net_lookup.c@ 103

Last change on this file since 103 was 26, checked in by Paul Smedley, 19 years ago

Updated source to 3.0.25rc1
File size: 8.3 KB
Line 
1/*
2 Samba Unix/Linux SMB client library
3 net lookup command
4 Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20#include "includes.h"
21#include "utils/net.h"
22
23int net_lookup_usage(int argc, const char **argv)
24{
25 d_printf(
26" net lookup [host] HOSTNAME[#<type>]\n\tgives IP for a hostname\n\n"
27" net lookup ldap [domain]\n\tgives IP of domain's ldap server\n\n"
28" net lookup kdc [realm]\n\tgives IP of realm's kerberos KDC\n\n"
29" net lookup dc [domain]\n\tgives IP of domains Domain Controllers\n\n"
30" net lookup master [domain|wg]\n\tgive IP of master browser\n\n"
31" net lookup name [name]\n\tLookup name's sid and type\n\n"
32" net lookup sid [sid]\n\tGive sid's name and type\n\n"
33);
34 return -1;
35}
36
37/* lookup a hostname giving an IP */
38static int net_lookup_host(int argc, const char **argv)
39{
40 struct in_addr ip;
41 int name_type = 0x20;
42 const char *name = argv[0];
43 char *p;
44
45 if (argc == 0)
46 return net_lookup_usage(argc, argv);
47
48 p = strchr_m(name,'#');
49 if (p) {
50 *p = '\0';
51 sscanf(++p,"%x",&name_type);
52 }
53
54 if (!resolve_name(name, &ip, name_type)) {
55 /* we deliberately use DEBUG() here to send it to stderr
56 so scripts aren't mucked up */
57 DEBUG(0,("Didn't find %s#%02x\n", name, name_type));
58 return -1;
59 }
60
61 d_printf("%s\n", inet_ntoa(ip));
62 return 0;
63}
64
65#ifdef HAVE_ADS
66static void print_ldap_srvlist(struct dns_rr_srv *dclist, int numdcs )
67{
68 struct in_addr ip;
69 int i;
70
71 for ( i=0; i<numdcs; i++ ) {
72 if ( resolve_name(dclist[i].hostname, &ip, 0x20) ) {
73 d_printf("%s:%d\n", inet_ntoa(ip), dclist[i].port);
74 }
75 }
76}
77#endif
78
79static int net_lookup_ldap(int argc, const char **argv)
80{
81#ifdef HAVE_ADS
82 const char *domain;
83 struct in_addr addr;
84 struct hostent *hostent;
85 struct dns_rr_srv *dcs = NULL;
86 int numdcs = 0;
87 char *sitename;
88 TALLOC_CTX *ctx;
89 NTSTATUS status;
90
91 if (argc > 0)
92 domain = argv[0];
93 else
94 domain = opt_target_workgroup;
95
96 sitename = sitename_fetch(domain);
97
98 if ( (ctx = talloc_init("net_lookup_ldap")) == NULL ) {
99 d_fprintf(stderr, "net_lookup_ldap: talloc_inti() failed!\n");
100 SAFE_FREE(sitename);
101 return -1;
102 }
103
104 DEBUG(9, ("Lookup up ldap for domain %s\n", domain));
105
106 status = ads_dns_query_dcs( ctx, domain, sitename, &dcs, &numdcs );
107 if ( NT_STATUS_IS_OK(status) && numdcs ) {
108 print_ldap_srvlist(dcs, numdcs);
109 TALLOC_FREE( ctx );
110 SAFE_FREE(sitename);
111 return 0;
112 }
113
114 DEBUG(9, ("Looking up DC for domain %s\n", domain));
115 if (!get_pdc_ip(domain, &addr)) {
116 TALLOC_FREE( ctx );
117 SAFE_FREE(sitename);
118 return -1;
119 }
120
121 hostent = gethostbyaddr((char *) &addr.s_addr, sizeof(addr.s_addr),
122 AF_INET);
123 if (!hostent) {
124 TALLOC_FREE( ctx );
125 SAFE_FREE(sitename);
126 return -1;
127 }
128
129 DEBUG(9, ("Found DC with DNS name %s\n", hostent->h_name));
130 domain = strchr(hostent->h_name, '.');
131 if (!domain) {
132 TALLOC_FREE( ctx );
133 SAFE_FREE(sitename);
134 return -1;
135 }
136 domain++;
137
138 DEBUG(9, ("Looking up ldap for domain %s\n", domain));
139
140 status = ads_dns_query_dcs( ctx, domain, sitename, &dcs, &numdcs );
141 if ( NT_STATUS_IS_OK(status) && numdcs ) {
142 print_ldap_srvlist(dcs, numdcs);
143 TALLOC_FREE( ctx );
144 SAFE_FREE(sitename);
145 return 0;
146 }
147
148 TALLOC_FREE( ctx );
149 SAFE_FREE(sitename);
150
151 return -1;
152#endif
153 DEBUG(1,("No ADS support\n"));
154 return -1;
155}
156
157static int net_lookup_dc(int argc, const char **argv)
158{
159 struct ip_service *ip_list;
160 struct in_addr addr;
161 char *pdc_str = NULL;
162 const char *domain=opt_target_workgroup;
163 char *sitename = NULL;
164 int count, i;
165
166 if (argc > 0)
167 domain=argv[0];
168
169 /* first get PDC */
170 if (!get_pdc_ip(domain, &addr))
171 return -1;
172
173 asprintf(&pdc_str, "%s", inet_ntoa(addr));
174 d_printf("%s\n", pdc_str);
175
176 sitename = sitename_fetch(domain);
177 if (!NT_STATUS_IS_OK(get_sorted_dc_list(domain, sitename, &ip_list, &count, False))) {
178 SAFE_FREE(pdc_str);
179 SAFE_FREE(sitename);
180 return 0;
181 }
182 SAFE_FREE(sitename);
183 for (i=0;i<count;i++) {
184 char *dc_str = inet_ntoa(ip_list[i].ip);
185 if (!strequal(pdc_str, dc_str))
186 d_printf("%s\n", dc_str);
187 }
188 SAFE_FREE(pdc_str);
189 return 0;
190}
191
192static int net_lookup_master(int argc, const char **argv)
193{
194 struct in_addr master_ip;
195 const char *domain=opt_target_workgroup;
196
197 if (argc > 0)
198 domain=argv[0];
199
200 if (!find_master_ip(domain, &master_ip))
201 return -1;
202 d_printf("%s\n", inet_ntoa(master_ip));
203 return 0;
204}
205
206static int net_lookup_kdc(int argc, const char **argv)
207{
208#ifdef HAVE_KRB5
209 krb5_error_code rc;
210 krb5_context ctx;
211 struct sockaddr_in *addrs;
212 int num_kdcs,i;
213 krb5_data realm;
214 char **realms;
215
216 initialize_krb5_error_table();
217 rc = krb5_init_context(&ctx);
218 if (rc) {
219 DEBUG(1,("krb5_init_context failed (%s)\n",
220 error_message(rc)));
221 return -1;
222 }
223
224 if (argc>0) {
225 realm.data = CONST_DISCARD(char *, argv[0]);
226 realm.length = strlen(argv[0]);
227 } else if (lp_realm() && *lp_realm()) {
228 realm.data = lp_realm();
229 realm.length = strlen((const char *)realm.data);
230 } else {
231 rc = krb5_get_host_realm(ctx, NULL, &realms);
232 if (rc) {
233 DEBUG(1,("krb5_gethost_realm failed (%s)\n",
234 error_message(rc)));
235 return -1;
236 }
237 realm.data = (char *) *realms;
238 realm.length = strlen((const char *)realm.data);
239 }
240
241 rc = smb_krb5_locate_kdc(ctx, &realm, (struct sockaddr **)(void *)&addrs, &num_kdcs, 0);
242 if (rc) {
243 DEBUG(1, ("smb_krb5_locate_kdc failed (%s)\n", error_message(rc)));
244 return -1;
245 }
246 for (i=0;i<num_kdcs;i++)
247 if (addrs[i].sin_family == AF_INET)
248 d_printf("%s:%hd\n", inet_ntoa(addrs[i].sin_addr),
249 ntohs(addrs[i].sin_port));
250 return 0;
251
252#endif
253 DEBUG(1, ("No kerberos support\n"));
254 return -1;
255}
256
257static int net_lookup_name(int argc, const char **argv)
258{
259 const char *dom, *name;
260 DOM_SID sid;
261 enum lsa_SidType type;
262
263 if (argc != 1) {
264 d_printf("usage: net lookup name <name>\n");
265 return -1;
266 }
267
268 if (!lookup_name(tmp_talloc_ctx(), argv[0], LOOKUP_NAME_ALL,
269 &dom, &name, &sid, &type)) {
270 d_printf("Could not lookup name %s\n", argv[0]);
271 return -1;
272 }
273
274 d_printf("%s %d (%s) %s\\%s\n", sid_string_static(&sid),
275 type, sid_type_lookup(type), dom, name);
276 return 0;
277}
278
279static int net_lookup_sid(int argc, const char **argv)
280{
281 const char *dom, *name;
282 DOM_SID sid;
283 enum lsa_SidType type;
284
285 if (argc != 1) {
286 d_printf("usage: net lookup sid <sid>\n");
287 return -1;
288 }
289
290 if (!string_to_sid(&sid, argv[0])) {
291 d_printf("Could not convert %s to SID\n", argv[0]);
292 return -1;
293 }
294
295 if (!lookup_sid(tmp_talloc_ctx(), &sid,
296 &dom, &name, &type)) {
297 d_printf("Could not lookup name %s\n", argv[0]);
298 return -1;
299 }
300
301 d_printf("%s %d (%s) %s\\%s\n", sid_string_static(&sid),
302 type, sid_type_lookup(type), dom, name);
303 return 0;
304}
305
306/* lookup hosts or IP addresses using internal samba lookup fns */
307int net_lookup(int argc, const char **argv)
308{
309 int i;
310
311 struct functable table[] = {
312 {"HOST", net_lookup_host},
313 {"LDAP", net_lookup_ldap},
314 {"DC", net_lookup_dc},
315 {"MASTER", net_lookup_master},
316 {"KDC", net_lookup_kdc},
317 {"NAME", net_lookup_name},
318 {"SID", net_lookup_sid},
319 {NULL, NULL}
320 };
321
322 if (argc < 1) {
323 d_printf("\nUsage: \n");
324 return net_lookup_usage(argc, argv);
325 }
326 for (i=0; table[i].funcname; i++) {
327 if (StrCaseCmp(argv[0], table[i].funcname) == 0)
328 return table[i].fn(argc-1, argv+1);
329 }
330
331 /* Default to lookup a hostname so 'net lookup foo#1b' can be
332 used instead of 'net lookup host foo#1b'. The host syntax
333 is a bit confusing as non #00 names can't really be
334 considered hosts as such. */
335
336 return net_lookup_host(argc, argv);
337}
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