source: trunk-3.0/source/utils/net_rpc_join.c@ 101

Last change on this file since 101 was 1, checked in by Paul Smedley, 19 years ago

Initial code import
File size: 12.4 KB
Line 
1/*
2 Samba Unix/Linux SMB client library
3 Distributed SMB/CIFS Server Management Utility
4 Copyright (C) 2001 Andrew Bartlett ([email protected])
5 Copyright (C) Tim Potter 2001
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 2 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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
20
21#include "includes.h"
22#include "utils/net.h"
23
24/* Macro for checking RPC error codes to make things more readable */
25
26#define CHECK_RPC_ERR(rpc, msg) \
27 if (!NT_STATUS_IS_OK(result = rpc)) { \
28 DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
29 goto done; \
30 }
31
32#define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
33 if (!NT_STATUS_IS_OK(result = rpc)) { \
34 DEBUG(0, debug_args); \
35 goto done; \
36 }
37
38/**
39 * confirm that a domain join is still valid
40 *
41 * @return A shell status integer (0 for success)
42 *
43 **/
44int net_rpc_join_ok(const char *domain, const char *server, struct in_addr *ip )
45{
46 uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS|NETLOGON_NEG_SCHANNEL;
47 struct cli_state *cli = NULL;
48 struct rpc_pipe_client *pipe_hnd = NULL;
49 struct rpc_pipe_client *netlogon_pipe = NULL;
50 NTSTATUS ntret = NT_STATUS_UNSUCCESSFUL;
51
52 /* Connect to remote machine */
53 if (!(cli = net_make_ipc_connection_ex(domain, server, ip, (NET_FLAGS_ANONYMOUS|NET_FLAGS_PDC)))) {
54 return -1;
55 }
56
57 /* Setup the creds as though we're going to do schannel... */
58 netlogon_pipe = get_schannel_session_key(cli, domain, &neg_flags, &ntret);
59
60 /* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
61 to negotiate schannel, but the creds were set up ok. That'll have to do. */
62
63 if (!netlogon_pipe) {
64 if (NT_STATUS_EQUAL(ntret, NT_STATUS_INVALID_NETWORK_RESPONSE)) {
65 cli_shutdown(cli);
66 return 0;
67 } else {
68 DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
69 "key from server %s for domain %s. Error was %s\n",
70 cli->desthost, domain, nt_errstr(ntret) ));
71 cli_shutdown(cli);
72 return -1;
73 }
74 }
75
76 /* Only do the rest of the schannel test if the client is allowed to do this. */
77 if (!lp_client_schannel()) {
78 cli_shutdown(cli);
79 /* We're good... */
80 return 0;
81 }
82
83 pipe_hnd = cli_rpc_pipe_open_schannel_with_key(cli, PI_NETLOGON,
84 PIPE_AUTH_LEVEL_PRIVACY,
85 domain, netlogon_pipe->dc, &ntret);
86
87 if (!pipe_hnd) {
88 DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
89 "on netlogon pipe to server %s for domain %s. Error was %s\n",
90 cli->desthost, domain, nt_errstr(ntret) ));
91 cli_shutdown(cli);
92 return -1;
93 }
94
95 cli_shutdown(cli);
96 return 0;
97}
98
99/**
100 * Join a domain using the administrator username and password
101 *
102 * @param argc Standard main() style argc
103 * @param argc Standard main() style argv. Initial components are already
104 * stripped. Currently not used.
105 * @return A shell status integer (0 for success)
106 *
107 **/
108
109int net_rpc_join_newstyle(int argc, const char **argv)
110{
111
112 /* libsmb variables */
113
114 struct cli_state *cli;
115 TALLOC_CTX *mem_ctx;
116 uint32 acb_info = ACB_WSTRUST;
117 uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS|(lp_client_schannel() ? NETLOGON_NEG_SCHANNEL : 0);
118 uint32 sec_channel_type;
119 struct rpc_pipe_client *pipe_hnd = NULL;
120
121 /* rpc variables */
122
123 POLICY_HND lsa_pol, sam_pol, domain_pol, user_pol;
124 DOM_SID *domain_sid;
125 uint32 user_rid;
126
127 /* Password stuff */
128
129 char *clear_trust_password = NULL;
130 uchar pwbuf[516];
131 SAM_USERINFO_CTR ctr;
132 SAM_USER_INFO_24 p24;
133 SAM_USER_INFO_16 p16;
134 uchar md4_trust_password[16];
135
136 /* Misc */
137
138 NTSTATUS result;
139 int retval = 1;
140 char *domain = NULL;
141 uint32 num_rids, *name_types, *user_rids;
142 uint32 flags = 0x3e8;
143 char *acct_name;
144 const char *const_acct_name;
145
146 /* check what type of join */
147 if (argc >= 0) {
148 sec_channel_type = get_sec_channel_type(argv[0]);
149 } else {
150 sec_channel_type = get_sec_channel_type(NULL);
151 }
152
153 switch (sec_channel_type) {
154 case SEC_CHAN_WKSTA:
155 acb_info = ACB_WSTRUST;
156 break;
157 case SEC_CHAN_BDC:
158 acb_info = ACB_SVRTRUST;
159 break;
160#if 0
161 case SEC_CHAN_DOMAIN:
162 acb_info = ACB_DOMTRUST;
163 break;
164#endif
165 }
166
167 /* Make authenticated connection to remote machine */
168
169 if (!(cli = net_make_ipc_connection(NET_FLAGS_PDC)))
170 return 1;
171
172 if (!(mem_ctx = talloc_init("net_rpc_join_newstyle"))) {
173 DEBUG(0, ("Could not initialise talloc context\n"));
174 goto done;
175 }
176
177 /* Fetch domain sid */
178
179 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &result);
180 if (!pipe_hnd) {
181 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
182 nt_errstr(result) ));
183 goto done;
184 }
185
186
187 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd, mem_ctx, True,
188 SEC_RIGHTS_MAXIMUM_ALLOWED,
189 &lsa_pol),
190 "error opening lsa policy handle");
191
192 CHECK_RPC_ERR(rpccli_lsa_query_info_policy(pipe_hnd, mem_ctx, &lsa_pol,
193 5, &domain, &domain_sid),
194 "error querying info policy");
195
196 rpccli_lsa_close(pipe_hnd, mem_ctx, &lsa_pol);
197 cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
198
199 /* Bail out if domain didn't get set. */
200 if (!domain) {
201 DEBUG(0, ("Could not get domain name.\n"));
202 goto done;
203 }
204
205 /* Create domain user */
206 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &result);
207 if (!pipe_hnd) {
208 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
209 nt_errstr(result) ));
210 goto done;
211 }
212
213 CHECK_RPC_ERR(rpccli_samr_connect(pipe_hnd, mem_ctx,
214 SEC_RIGHTS_MAXIMUM_ALLOWED,
215 &sam_pol),
216 "could not connect to SAM database");
217
218
219 CHECK_RPC_ERR(rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
220 SEC_RIGHTS_MAXIMUM_ALLOWED,
221 domain_sid, &domain_pol),
222 "could not open domain");
223
224 /* Create domain user */
225 if ((acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname())) == NULL) {
226 result = NT_STATUS_NO_MEMORY;
227 goto done;
228 }
229 strlower_m(acct_name);
230 const_acct_name = acct_name;
231
232 result = rpccli_samr_create_dom_user(pipe_hnd, mem_ctx, &domain_pol,
233 acct_name, acb_info,
234 0xe005000b, &user_pol,
235 &user_rid);
236
237 if (!NT_STATUS_IS_OK(result) &&
238 !NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
239 d_fprintf(stderr, "Creation of workstation account failed\n");
240
241 /* If NT_STATUS_ACCESS_DENIED then we have a valid
242 username/password combo but the user does not have
243 administrator access. */
244
245 if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
246 d_fprintf(stderr, "User specified does not have administrator privileges\n");
247
248 goto done;
249 }
250
251 /* We *must* do this.... don't ask... */
252
253 if (NT_STATUS_IS_OK(result)) {
254 rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
255 }
256
257 CHECK_RPC_ERR_DEBUG(rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
258 &domain_pol, flags,
259 1, &const_acct_name,
260 &num_rids,
261 &user_rids, &name_types),
262 ("error looking up rid for user %s: %s\n",
263 acct_name, nt_errstr(result)));
264
265 if (name_types[0] != SID_NAME_USER) {
266 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types[0]));
267 goto done;
268 }
269
270 user_rid = user_rids[0];
271
272 /* Open handle on user */
273
274 CHECK_RPC_ERR_DEBUG(
275 rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
276 SEC_RIGHTS_MAXIMUM_ALLOWED,
277 user_rid, &user_pol),
278 ("could not re-open existing user %s: %s\n",
279 acct_name, nt_errstr(result)));
280
281 /* Create a random machine account password */
282
283 {
284 char *str;
285 str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
286 clear_trust_password = SMB_STRDUP(str);
287 E_md4hash(clear_trust_password, md4_trust_password);
288 }
289
290 encode_pw_buffer(pwbuf, clear_trust_password, STR_UNICODE);
291
292 /* Set password on machine account */
293
294 ZERO_STRUCT(ctr);
295 ZERO_STRUCT(p24);
296
297 init_sam_user_info24(&p24, (char *)pwbuf,24);
298
299 ctr.switch_value = 24;
300 ctr.info.id24 = &p24;
301
302 CHECK_RPC_ERR(rpccli_samr_set_userinfo(pipe_hnd, mem_ctx, &user_pol, 24,
303 &cli->user_session_key, &ctr),
304 "error setting trust account password");
305
306 /* Why do we have to try to (re-)set the ACB to be the same as what
307 we passed in the samr_create_dom_user() call? When a NT
308 workstation is joined to a domain by an administrator the
309 acb_info is set to 0x80. For a normal user with "Add
310 workstations to the domain" rights the acb_info is 0x84. I'm
311 not sure whether it is supposed to make a difference or not. NT
312 seems to cope with either value so don't bomb out if the set
313 userinfo2 level 0x10 fails. -tpot */
314
315 ZERO_STRUCT(ctr);
316 ctr.switch_value = 16;
317 ctr.info.id16 = &p16;
318
319 init_sam_user_info16(&p16, acb_info);
320
321 /* Ignoring the return value is necessary for joining a domain
322 as a normal user with "Add workstation to domain" privilege. */
323
324 result = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16,
325 &cli->user_session_key, &ctr);
326
327 rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
328 cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
329
330 /* Now check the whole process from top-to-bottom */
331
332 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_NETLOGON, &result);
333 if (!pipe_hnd) {
334 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
335 nt_errstr(result) ));
336 goto done;
337 }
338
339 result = rpccli_netlogon_setup_creds(pipe_hnd,
340 cli->desthost, /* server name */
341 domain, /* domain */
342 global_myname(), /* client name */
343 global_myname(), /* machine account name */
344 md4_trust_password,
345 sec_channel_type,
346 &neg_flags);
347
348 if (!NT_STATUS_IS_OK(result)) {
349 DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
350 nt_errstr(result)));
351
352 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
353 (sec_channel_type == SEC_CHAN_BDC) ) {
354 d_fprintf(stderr, "Please make sure that no computer account\n"
355 "named like this machine (%s) exists in the domain\n",
356 global_myname());
357 }
358
359 goto done;
360 }
361
362 /* We can only check the schannel connection if the client is allowed
363 to do this and the server supports it. If not, just assume success
364 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
365 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
366
367 if (lp_client_schannel() && (neg_flags & NETLOGON_NEG_SCHANNEL)) {
368 struct rpc_pipe_client *netlogon_schannel_pipe =
369 cli_rpc_pipe_open_schannel_with_key(cli,
370 PI_NETLOGON,
371 PIPE_AUTH_LEVEL_PRIVACY,
372 domain,
373 pipe_hnd->dc,
374 &result);
375
376 if (!NT_STATUS_IS_OK(result)) {
377 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
378 nt_errstr(result)));
379
380 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
381 (sec_channel_type == SEC_CHAN_BDC) ) {
382 d_fprintf(stderr, "Please make sure that no computer account\n"
383 "named like this machine (%s) exists in the domain\n",
384 global_myname());
385 }
386
387 goto done;
388 }
389 cli_rpc_pipe_close(netlogon_schannel_pipe);
390 }
391
392 cli_rpc_pipe_close(pipe_hnd);
393
394 /* Now store the secret in the secrets database */
395
396 strupper_m(domain);
397
398 if (!secrets_store_domain_sid(domain, domain_sid)) {
399 DEBUG(0, ("error storing domain sid for %s\n", domain));
400 goto done;
401 }
402
403 if (!secrets_store_machine_password(clear_trust_password, domain, sec_channel_type)) {
404 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
405 }
406
407 /* double-check, connection from scratch */
408 retval = net_rpc_join_ok(domain, cli->desthost, &cli->dest_ip);
409
410done:
411
412 /* Display success or failure */
413
414 if (domain) {
415 if (retval != 0) {
416 fprintf(stderr,"Unable to join domain %s.\n",domain);
417 } else {
418 printf("Joined domain %s.\n",domain);
419 }
420 }
421
422 cli_shutdown(cli);
423
424 SAFE_FREE(clear_trust_password);
425
426 return retval;
427}
428
429/**
430 * check that a join is OK
431 *
432 * @return A shell status integer (0 for success)
433 *
434 **/
435int net_rpc_testjoin(int argc, const char **argv)
436{
437 char *domain = smb_xstrdup(opt_target_workgroup);
438
439 /* Display success or failure */
440 if (net_rpc_join_ok(domain, NULL, NULL) != 0) {
441 fprintf(stderr,"Join to domain '%s' is not valid\n",domain);
442 free(domain);
443 return -1;
444 }
445
446 printf("Join to '%s' is OK\n",domain);
447 free(domain);
448 return 0;
449}
Note: See TracBrowser for help on using the repository browser.