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s3:net_rpc_join: make use of cli_state_remote_sockaddr()
[Samba/gebeck_regimport.git] / source3 / utils / net_rpc_join.c
blob8f1277764cb9199648e2ff67abfda0897053e833
1 /*
2 Samba Unix/Linux SMB client library
3 Distributed SMB/CIFS Server Management Utility
4 Copyright (C) 2001 Andrew Bartlett (abartlet@samba.org)
5 Copyright (C) Tim Potter 2001
6 Copyright (C) 2008 Guenther Deschner
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
20
21 #include "includes.h"
22 #include "utils/net.h"
23 #include "rpc_client/cli_pipe.h"
24 #include "../libcli/auth/libcli_auth.h"
25 #include "../librpc/gen_ndr/ndr_lsa_c.h"
26 #include "rpc_client/cli_lsarpc.h"
27 #include "../librpc/gen_ndr/ndr_samr_c.h"
28 #include "rpc_client/init_samr.h"
29 #include "../librpc/gen_ndr/ndr_netlogon.h"
30 #include "rpc_client/cli_netlogon.h"
31 #include "secrets.h"
32 #include "rpc_client/init_lsa.h"
33 #include "libsmb/libsmb.h"
34
35 /* Macro for checking RPC error codes to make things more readable */
36
37 #define CHECK_RPC_ERR(rpc, msg) \
38 if (!NT_STATUS_IS_OK(status = rpc)) { \
39 DEBUG(0, (msg ": %s\n", nt_errstr(status))); \
40 goto done; \
41 }
42
43 #define CHECK_DCERPC_ERR(rpc, msg) \
44 if (!NT_STATUS_IS_OK(status = rpc)) { \
45 DEBUG(0, (msg ": %s\n", nt_errstr(status))); \
46 goto done; \
47 } \
48 if (!NT_STATUS_IS_OK(result)) { \
49 status = result; \
50 DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
51 goto done; \
52 }
53
54
55 #define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
56 if (!NT_STATUS_IS_OK(status = rpc)) { \
57 DEBUG(0, debug_args); \
58 goto done; \
59 }
60
61 #define CHECK_DCERPC_ERR_DEBUG(rpc, debug_args) \
62 if (!NT_STATUS_IS_OK(status = rpc)) { \
63 DEBUG(0, debug_args); \
64 goto done; \
65 } \
66 if (!NT_STATUS_IS_OK(result)) { \
67 status = result; \
68 DEBUG(0, debug_args); \
69 goto done; \
70 }
71
72
73 /**
74 * confirm that a domain join is still valid
75 *
76 * @return A shell status integer (0 for success)
77 *
78 **/
79 NTSTATUS net_rpc_join_ok(struct net_context *c, const char *domain,
80 const char *server,
81 const struct sockaddr_storage *server_ss)
82 {
83 enum security_types sec;
84 unsigned int conn_flags = NET_FLAGS_PDC;
85 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
86 struct cli_state *cli = NULL;
87 struct rpc_pipe_client *pipe_hnd = NULL;
88 struct rpc_pipe_client *netlogon_pipe = NULL;
89 NTSTATUS ntret = NT_STATUS_UNSUCCESSFUL;
90
91 sec = (enum security_types)lp_security();
92
93 if (sec == SEC_ADS) {
94 /* Connect to IPC$ using machine account's credentials. We don't use anonymous
95 connection here, as it may be denied by server's local policy. */
96 net_use_machine_account(c);
97
98 } else {
99 /* some servers (e.g. WinNT) don't accept machine-authenticated
100 smb connections */
101 conn_flags |= NET_FLAGS_ANONYMOUS;
102 }
103
104 /* Connect to remote machine */
105 ntret = net_make_ipc_connection_ex(c, domain, server, server_ss,
106 conn_flags, &cli);
107 if (!NT_STATUS_IS_OK(ntret)) {
108 return ntret;
109 }
110
111 /* Setup the creds as though we're going to do schannel... */
112 ntret = get_schannel_session_key(cli, domain, &neg_flags,
113 &netlogon_pipe);
114
115 /* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
116 to negotiate schannel, but the creds were set up ok. That'll have to do. */
117
118 if (!NT_STATUS_IS_OK(ntret)) {
119 if (NT_STATUS_EQUAL(ntret, NT_STATUS_INVALID_NETWORK_RESPONSE)) {
120 cli_shutdown(cli);
121 return NT_STATUS_OK;
122 } else {
123 DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
124 "key from server %s for domain %s. Error was %s\n",
125 cli->desthost, domain, nt_errstr(ntret) ));
126 cli_shutdown(cli);
127 return ntret;
128 }
129 }
130
131 /* Only do the rest of the schannel test if the client is allowed to do this. */
132 if (!lp_client_schannel()) {
133 cli_shutdown(cli);
134 /* We're good... */
135 return ntret;
136 }
137
138 ntret = cli_rpc_pipe_open_schannel_with_key(
139 cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
140 DCERPC_AUTH_LEVEL_PRIVACY,
141 domain, &netlogon_pipe->dc, &pipe_hnd);
142
143 if (!NT_STATUS_IS_OK(ntret)) {
144 DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
145 "on netlogon pipe to server %s for domain %s. Error was %s\n",
146 cli->desthost, domain, nt_errstr(ntret) ));
147 /*
148 * Note: here, we have:
149 * (pipe_hnd != NULL) if and only if NT_STATUS_IS_OK(ntret)
150 */
151 }
152
153 cli_shutdown(cli);
154 return ntret;
155 }
156
157 /**
158 * Join a domain using the administrator username and password
159 *
160 * @param argc Standard main() style argc
161 * @param argc Standard main() style argv. Initial components are already
162 * stripped. Currently not used.
163 * @return A shell status integer (0 for success)
164 *
165 **/
166
167 int net_rpc_join_newstyle(struct net_context *c, int argc, const char **argv)
168 {
169
170 /* libsmb variables */
171
172 struct cli_state *cli;
173 TALLOC_CTX *mem_ctx;
174 uint32 acb_info = ACB_WSTRUST;
175 uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
176 enum netr_SchannelType sec_channel_type;
177 struct rpc_pipe_client *pipe_hnd = NULL;
178 struct dcerpc_binding_handle *b = NULL;
179
180 /* rpc variables */
181
182 struct policy_handle lsa_pol, sam_pol, domain_pol, user_pol;
183 struct dom_sid *domain_sid;
184 uint32 user_rid;
185
186 /* Password stuff */
187
188 char *clear_trust_password = NULL;
189 struct samr_CryptPassword crypt_pwd;
190 uchar md4_trust_password[16];
191 union samr_UserInfo set_info;
192
193 /* Misc */
194
195 NTSTATUS status, result;
196 int retval = 1;
197 const char *domain = NULL;
198 char *acct_name;
199 struct lsa_String lsa_acct_name;
200 uint32 acct_flags=0;
201 uint32_t access_granted = 0;
202 union lsa_PolicyInformation *info = NULL;
203 struct samr_Ids user_rids;
204 struct samr_Ids name_types;
205
206
207 /* check what type of join */
208 if (argc >= 0) {
209 sec_channel_type = get_sec_channel_type(argv[0]);
210 } else {
211 sec_channel_type = get_sec_channel_type(NULL);
212 }
213
214 switch (sec_channel_type) {
215 case SEC_CHAN_WKSTA:
216 acb_info = ACB_WSTRUST;
217 break;
218 case SEC_CHAN_BDC:
219 acb_info = ACB_SVRTRUST;
220 break;
221 #if 0
222 case SEC_CHAN_DOMAIN:
223 acb_info = ACB_DOMTRUST;
224 break;
225 #endif
226 default:
227 DEBUG(0,("secure channel type %d not yet supported\n",
228 sec_channel_type));
229 break;
230 }
231
232 /* Make authenticated connection to remote machine */
233
234 status = net_make_ipc_connection(c, NET_FLAGS_PDC, &cli);
235 if (!NT_STATUS_IS_OK(status)) {
236 return 1;
237 }
238
239 if (!(mem_ctx = talloc_init("net_rpc_join_newstyle"))) {
240 DEBUG(0, ("Could not initialise talloc context\n"));
241 goto done;
242 }
243
244 /* Fetch domain sid */
245
246 status = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
247 &pipe_hnd);
248 if (!NT_STATUS_IS_OK(status)) {
249 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
250 nt_errstr(status) ));
251 goto done;
252 }
253
254 b = pipe_hnd->binding_handle;
255
256 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd, mem_ctx, true,
257 SEC_FLAG_MAXIMUM_ALLOWED,
258 &lsa_pol),
259 "error opening lsa policy handle");
260
261 CHECK_DCERPC_ERR(dcerpc_lsa_QueryInfoPolicy(b, mem_ctx,
262 &lsa_pol,
263 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
264 &info,
265 &result),
266 "error querying info policy");
267
268 domain = info->account_domain.name.string;
269 domain_sid = info->account_domain.sid;
270
271 dcerpc_lsa_Close(b, mem_ctx, &lsa_pol, &result);
272 TALLOC_FREE(pipe_hnd); /* Done with this pipe */
273
274 /* Bail out if domain didn't get set. */
275 if (!domain) {
276 DEBUG(0, ("Could not get domain name.\n"));
277 goto done;
278 }
279
280 /* Create domain user */
281 status = cli_rpc_pipe_open_noauth(cli, &ndr_table_samr.syntax_id,
282 &pipe_hnd);
283 if (!NT_STATUS_IS_OK(status)) {
284 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
285 nt_errstr(status) ));
286 goto done;
287 }
288
289 b = pipe_hnd->binding_handle;
290
291 CHECK_DCERPC_ERR(dcerpc_samr_Connect2(b, mem_ctx,
292 pipe_hnd->desthost,
293 SAMR_ACCESS_ENUM_DOMAINS
294 | SAMR_ACCESS_LOOKUP_DOMAIN,
295 &sam_pol,
296 &result),
297 "could not connect to SAM database");
298
299
300 CHECK_DCERPC_ERR(dcerpc_samr_OpenDomain(b, mem_ctx,
301 &sam_pol,
302 SAMR_DOMAIN_ACCESS_LOOKUP_INFO_1
303 | SAMR_DOMAIN_ACCESS_CREATE_USER
304 | SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT,
305 domain_sid,
306 &domain_pol,
307 &result),
308 "could not open domain");
309
310 /* Create domain user */
311 if ((acct_name = talloc_asprintf(mem_ctx, "%s$", lp_netbios_name())) == NULL) {
312 status = NT_STATUS_NO_MEMORY;
313 goto done;
314 }
315 strlower_m(acct_name);
316
317 init_lsa_String(&lsa_acct_name, acct_name);
318
319 acct_flags = SEC_GENERIC_READ | SEC_GENERIC_WRITE | SEC_GENERIC_EXECUTE |
320 SEC_STD_WRITE_DAC | SEC_STD_DELETE |
321 SAMR_USER_ACCESS_SET_PASSWORD |
322 SAMR_USER_ACCESS_GET_ATTRIBUTES |
323 SAMR_USER_ACCESS_SET_ATTRIBUTES;
324
325 DEBUG(10, ("Creating account with flags: %d\n",acct_flags));
326
327 status = dcerpc_samr_CreateUser2(b, mem_ctx,
328 &domain_pol,
329 &lsa_acct_name,
330 acb_info,
331 acct_flags,
332 &user_pol,
333 &access_granted,
334 &user_rid,
335 &result);
336 if (!NT_STATUS_IS_OK(status)) {
337 goto done;
338 }
339 if (!NT_STATUS_IS_OK(result) &&
340 !NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
341 status = result;
342 d_fprintf(stderr,_("Creation of workstation account failed\n"));
343
344 /* If NT_STATUS_ACCESS_DENIED then we have a valid
345 username/password combo but the user does not have
346 administrator access. */
347
348 if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
349 d_fprintf(stderr, _("User specified does not have "
350 "administrator privileges\n"));
351
352 goto done;
353 }
354
355 /* We *must* do this.... don't ask... */
356
357 if (NT_STATUS_IS_OK(result)) {
358 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
359 }
360
361 CHECK_DCERPC_ERR_DEBUG(dcerpc_samr_LookupNames(b, mem_ctx,
362 &domain_pol,
363 1,
364 &lsa_acct_name,
365 &user_rids,
366 &name_types,
367 &result),
368 ("error looking up rid for user %s: %s/%s\n",
369 acct_name, nt_errstr(status), nt_errstr(result)));
370
371 if (name_types.ids[0] != SID_NAME_USER) {
372 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types.ids[0]));
373 goto done;
374 }
375
376 user_rid = user_rids.ids[0];
377
378 /* Open handle on user */
379
380 CHECK_DCERPC_ERR_DEBUG(
381 dcerpc_samr_OpenUser(b, mem_ctx,
382 &domain_pol,
383 SEC_FLAG_MAXIMUM_ALLOWED,
384 user_rid,
385 &user_pol,
386 &result),
387 ("could not re-open existing user %s: %s/%s\n",
388 acct_name, nt_errstr(status), nt_errstr(result)));
389
390 /* Create a random machine account password */
391
392 clear_trust_password = generate_random_str(talloc_tos(), DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
393 E_md4hash(clear_trust_password, md4_trust_password);
394
395 /* Set password on machine account */
396
397 init_samr_CryptPassword(clear_trust_password,
398 &cli->user_session_key,
399 &crypt_pwd);
400
401 set_info.info24.password = crypt_pwd;
402 set_info.info24.password_expired = PASS_DONT_CHANGE_AT_NEXT_LOGON;
403
404 CHECK_DCERPC_ERR(dcerpc_samr_SetUserInfo2(b, mem_ctx,
405 &user_pol,
406 24,
407 &set_info,
408 &result),
409 "error setting trust account password");
410
411 /* Why do we have to try to (re-)set the ACB to be the same as what
412 we passed in the samr_create_dom_user() call? When a NT
413 workstation is joined to a domain by an administrator the
414 acb_info is set to 0x80. For a normal user with "Add
415 workstations to the domain" rights the acb_info is 0x84. I'm
416 not sure whether it is supposed to make a difference or not. NT
417 seems to cope with either value so don't bomb out if the set
418 userinfo2 level 0x10 fails. -tpot */
419
420 set_info.info16.acct_flags = acb_info;
421
422 /* Ignoring the return value is necessary for joining a domain
423 as a normal user with "Add workstation to domain" privilege. */
424
425 status = dcerpc_samr_SetUserInfo(b, mem_ctx,
426 &user_pol,
427 16,
428 &set_info,
429 &result);
430
431 dcerpc_samr_Close(b, mem_ctx, &user_pol, &result);
432 TALLOC_FREE(pipe_hnd); /* Done with this pipe */
433
434 /* Now check the whole process from top-to-bottom */
435
436 status = cli_rpc_pipe_open_noauth(cli, &ndr_table_netlogon.syntax_id,
437 &pipe_hnd);
438 if (!NT_STATUS_IS_OK(status)) {
439 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
440 nt_errstr(status) ));
441 goto done;
442 }
443
444 status = rpccli_netlogon_setup_creds(pipe_hnd,
445 cli->desthost, /* server name */
446 domain, /* domain */
447 lp_netbios_name(), /* client name */
448 lp_netbios_name(), /* machine account name */
449 md4_trust_password,
450 sec_channel_type,
451 &neg_flags);
452
453 if (!NT_STATUS_IS_OK(status)) {
454 DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
455 nt_errstr(status)));
456
457 if ( NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) &&
458 (sec_channel_type == SEC_CHAN_BDC) ) {
459 d_fprintf(stderr, _("Please make sure that no computer "
460 "account\nnamed like this machine "
461 "(%s) exists in the domain\n"),
462 lp_netbios_name());
463 }
464
465 goto done;
466 }
467
468 /* We can only check the schannel connection if the client is allowed
469 to do this and the server supports it. If not, just assume success
470 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
471 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
472
473 if (lp_client_schannel() && (neg_flags & NETLOGON_NEG_SCHANNEL)) {
474 struct rpc_pipe_client *netlogon_schannel_pipe;
475
476 status = cli_rpc_pipe_open_schannel_with_key(
477 cli, &ndr_table_netlogon.syntax_id, NCACN_NP,
478 DCERPC_AUTH_LEVEL_PRIVACY, domain, &pipe_hnd->dc,
479 &netlogon_schannel_pipe);
480
481 if (!NT_STATUS_IS_OK(status)) {
482 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
483 nt_errstr(status)));
484
485 if ( NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED) &&
486 (sec_channel_type == SEC_CHAN_BDC) ) {
487 d_fprintf(stderr, _("Please make sure that no "
488 "computer account\nnamed "
489 "like this machine (%s) "
490 "exists in the domain\n"),
491 lp_netbios_name());
492 }
493
494 goto done;
495 }
496 TALLOC_FREE(netlogon_schannel_pipe);
497 }
498
499 TALLOC_FREE(pipe_hnd);
500
501 /* Now store the secret in the secrets database */
502
503 strupper_m(discard_const_p(char, domain));
504
505 if (!secrets_store_domain_sid(domain, domain_sid)) {
506 DEBUG(0, ("error storing domain sid for %s\n", domain));
507 goto done;
508 }
509
510 if (!secrets_store_machine_password(clear_trust_password, domain, sec_channel_type)) {
511 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
512 }
513
514 /* double-check, connection from scratch */
515 status = net_rpc_join_ok(c, domain, cli->desthost,
516 cli_state_remote_sockaddr(cli));
517 retval = NT_STATUS_IS_OK(status) ? 0 : -1;
518
519 done:
520
521 /* Display success or failure */
522
523 if (domain) {
524 if (retval != 0) {
525 fprintf(stderr,_("Unable to join domain %s.\n"),domain);
526 } else {
527 printf(_("Joined domain %s.\n"),domain);
528 }
529 }
530
531 cli_shutdown(cli);
532
533 TALLOC_FREE(clear_trust_password);
534
535 return retval;
536 }
537
538 /**
539 * check that a join is OK
540 *
541 * @return A shell status integer (0 for success)
542 *
543 **/
544 int net_rpc_testjoin(struct net_context *c, int argc, const char **argv)
545 {
546 NTSTATUS nt_status;
547
548 if (c->display_usage) {
549 d_printf(_("Usage\n"
550 "net rpc testjoin\n"
551 " Test if a join is OK\n"));
552 return 0;
553 }
554
555 /* Display success or failure */
556 nt_status = net_rpc_join_ok(c, c->opt_target_workgroup, NULL, NULL);
557 if (!NT_STATUS_IS_OK(nt_status)) {
558 fprintf(stderr, _("Join to domain '%s' is not valid: %s\n"),
559 c->opt_target_workgroup, nt_errstr(nt_status));
560 return -1;
561 }
562
563 printf(_("Join to '%s' is OK\n"), c->opt_target_workgroup);
564 return 0;
565 }
reg import