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
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.
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.
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/>. */
22 #include "utils/net.h"
23 #include "../libcli/auth/libcli_auth.h"
24 #include "../librpc/gen_ndr/cli_lsa.h"
25 #include "rpc_client/cli_lsarpc.h"
26 #include "../librpc/gen_ndr/cli_samr.h"
27 #include "rpc_client/init_samr.h"
28 #include "../librpc/gen_ndr/ndr_netlogon.h"
29 #include "rpc_client/cli_netlogon.h"
32 /* Macro for checking RPC error codes to make things more readable */
34 #define CHECK_RPC_ERR(rpc, msg) \
35 if (!NT_STATUS_IS_OK(result = rpc)) { \
36 DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
40 #define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
41 if (!NT_STATUS_IS_OK(result = rpc)) { \
42 DEBUG(0, debug_args); \
47 * confirm that a domain join is still valid
49 * @return A shell status integer (0 for success)
52 NTSTATUS
net_rpc_join_ok(struct net_context
*c
, const char *domain
,
53 const char *server
, struct sockaddr_storage
*pss
)
55 enum security_types sec
;
56 unsigned int conn_flags
= NET_FLAGS_PDC
;
57 uint32_t neg_flags
= NETLOGON_NEG_AUTH2_ADS_FLAGS
;
58 struct cli_state
*cli
= NULL
;
59 struct rpc_pipe_client
*pipe_hnd
= NULL
;
60 struct rpc_pipe_client
*netlogon_pipe
= NULL
;
61 NTSTATUS ntret
= NT_STATUS_UNSUCCESSFUL
;
63 sec
= (enum security_types
)lp_security();
66 /* Connect to IPC$ using machine account's credentials. We don't use anonymous
67 connection here, as it may be denied by server's local policy. */
68 net_use_machine_account(c
);
71 /* some servers (e.g. WinNT) don't accept machine-authenticated
73 conn_flags
|= NET_FLAGS_ANONYMOUS
;
76 /* Connect to remote machine */
77 ntret
= net_make_ipc_connection_ex(c
, domain
, server
, pss
, conn_flags
,
79 if (!NT_STATUS_IS_OK(ntret
)) {
83 /* Setup the creds as though we're going to do schannel... */
84 ntret
= get_schannel_session_key(cli
, domain
, &neg_flags
,
87 /* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
88 to negotiate schannel, but the creds were set up ok. That'll have to do. */
90 if (!NT_STATUS_IS_OK(ntret
)) {
91 if (NT_STATUS_EQUAL(ntret
, NT_STATUS_INVALID_NETWORK_RESPONSE
)) {
95 DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
96 "key from server %s for domain %s. Error was %s\n",
97 cli
->desthost
, domain
, nt_errstr(ntret
) ));
103 /* Only do the rest of the schannel test if the client is allowed to do this. */
104 if (!lp_client_schannel()) {
110 ntret
= cli_rpc_pipe_open_schannel_with_key(
111 cli
, &ndr_table_netlogon
.syntax_id
, NCACN_NP
,
112 DCERPC_AUTH_LEVEL_PRIVACY
,
113 domain
, &netlogon_pipe
->dc
, &pipe_hnd
);
115 if (!NT_STATUS_IS_OK(ntret
)) {
116 DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
117 "on netlogon pipe to server %s for domain %s. Error was %s\n",
118 cli
->desthost
, domain
, nt_errstr(ntret
) ));
120 * Note: here, we have:
121 * (pipe_hnd != NULL) if and only if NT_STATUS_IS_OK(ntret)
130 * Join a domain using the administrator username and password
132 * @param argc Standard main() style argc
133 * @param argc Standard main() style argv. Initial components are already
134 * stripped. Currently not used.
135 * @return A shell status integer (0 for success)
139 int net_rpc_join_newstyle(struct net_context
*c
, int argc
, const char **argv
)
142 /* libsmb variables */
144 struct cli_state
*cli
;
146 uint32 acb_info
= ACB_WSTRUST
;
147 uint32_t neg_flags
= NETLOGON_NEG_AUTH2_ADS_FLAGS
;
148 enum netr_SchannelType sec_channel_type
;
149 struct rpc_pipe_client
*pipe_hnd
= NULL
;
153 struct policy_handle lsa_pol
, sam_pol
, domain_pol
, user_pol
;
154 struct dom_sid
*domain_sid
;
159 char *clear_trust_password
= NULL
;
160 struct samr_CryptPassword crypt_pwd
;
161 uchar md4_trust_password
[16];
162 union samr_UserInfo set_info
;
168 const char *domain
= NULL
;
170 struct lsa_String lsa_acct_name
;
172 uint32_t access_granted
= 0;
173 union lsa_PolicyInformation
*info
= NULL
;
174 struct samr_Ids user_rids
;
175 struct samr_Ids name_types
;
177 /* check what type of join */
179 sec_channel_type
= get_sec_channel_type(argv
[0]);
181 sec_channel_type
= get_sec_channel_type(NULL
);
184 switch (sec_channel_type
) {
186 acb_info
= ACB_WSTRUST
;
189 acb_info
= ACB_SVRTRUST
;
192 case SEC_CHAN_DOMAIN
:
193 acb_info
= ACB_DOMTRUST
;
197 DEBUG(0,("secure channel type %d not yet supported\n",
202 /* Make authenticated connection to remote machine */
204 result
= net_make_ipc_connection(c
, NET_FLAGS_PDC
, &cli
);
205 if (!NT_STATUS_IS_OK(result
)) {
209 if (!(mem_ctx
= talloc_init("net_rpc_join_newstyle"))) {
210 DEBUG(0, ("Could not initialise talloc context\n"));
214 /* Fetch domain sid */
216 result
= cli_rpc_pipe_open_noauth(cli
, &ndr_table_lsarpc
.syntax_id
,
218 if (!NT_STATUS_IS_OK(result
)) {
219 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
220 nt_errstr(result
) ));
225 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd
, mem_ctx
, true,
226 SEC_FLAG_MAXIMUM_ALLOWED
,
228 "error opening lsa policy handle");
230 CHECK_RPC_ERR(rpccli_lsa_QueryInfoPolicy(pipe_hnd
, mem_ctx
,
232 LSA_POLICY_INFO_ACCOUNT_DOMAIN
,
234 "error querying info policy");
236 domain
= info
->account_domain
.name
.string
;
237 domain_sid
= info
->account_domain
.sid
;
239 rpccli_lsa_Close(pipe_hnd
, mem_ctx
, &lsa_pol
);
240 TALLOC_FREE(pipe_hnd
); /* Done with this pipe */
242 /* Bail out if domain didn't get set. */
244 DEBUG(0, ("Could not get domain name.\n"));
248 /* Create domain user */
249 result
= cli_rpc_pipe_open_noauth(cli
, &ndr_table_samr
.syntax_id
,
251 if (!NT_STATUS_IS_OK(result
)) {
252 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
253 nt_errstr(result
) ));
257 CHECK_RPC_ERR(rpccli_samr_Connect2(pipe_hnd
, mem_ctx
,
259 SAMR_ACCESS_ENUM_DOMAINS
260 | SAMR_ACCESS_LOOKUP_DOMAIN
,
262 "could not connect to SAM database");
265 CHECK_RPC_ERR(rpccli_samr_OpenDomain(pipe_hnd
, mem_ctx
,
267 SAMR_DOMAIN_ACCESS_LOOKUP_INFO_1
268 | SAMR_DOMAIN_ACCESS_CREATE_USER
269 | SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT
,
272 "could not open domain");
274 /* Create domain user */
275 if ((acct_name
= talloc_asprintf(mem_ctx
, "%s$", global_myname())) == NULL
) {
276 result
= NT_STATUS_NO_MEMORY
;
279 strlower_m(acct_name
);
281 init_lsa_String(&lsa_acct_name
, acct_name
);
283 acct_flags
= SEC_GENERIC_READ
| SEC_GENERIC_WRITE
| SEC_GENERIC_EXECUTE
|
284 SEC_STD_WRITE_DAC
| SEC_STD_DELETE
|
285 SAMR_USER_ACCESS_SET_PASSWORD
|
286 SAMR_USER_ACCESS_GET_ATTRIBUTES
|
287 SAMR_USER_ACCESS_SET_ATTRIBUTES
;
289 DEBUG(10, ("Creating account with flags: %d\n",acct_flags
));
291 result
= rpccli_samr_CreateUser2(pipe_hnd
, mem_ctx
,
300 if (!NT_STATUS_IS_OK(result
) &&
301 !NT_STATUS_EQUAL(result
, NT_STATUS_USER_EXISTS
)) {
302 d_fprintf(stderr
,_("Creation of workstation account failed\n"));
304 /* If NT_STATUS_ACCESS_DENIED then we have a valid
305 username/password combo but the user does not have
306 administrator access. */
308 if (NT_STATUS_V(result
) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED
))
309 d_fprintf(stderr
, _("User specified does not have "
310 "administrator privileges\n"));
315 /* We *must* do this.... don't ask... */
317 if (NT_STATUS_IS_OK(result
)) {
318 rpccli_samr_Close(pipe_hnd
, mem_ctx
, &user_pol
);
321 CHECK_RPC_ERR_DEBUG(rpccli_samr_LookupNames(pipe_hnd
, mem_ctx
,
327 ("error looking up rid for user %s: %s\n",
328 acct_name
, nt_errstr(result
)));
330 if (name_types
.ids
[0] != SID_NAME_USER
) {
331 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name
, name_types
.ids
[0]));
335 user_rid
= user_rids
.ids
[0];
337 /* Open handle on user */
340 rpccli_samr_OpenUser(pipe_hnd
, mem_ctx
,
342 SEC_FLAG_MAXIMUM_ALLOWED
,
345 ("could not re-open existing user %s: %s\n",
346 acct_name
, nt_errstr(result
)));
348 /* Create a random machine account password */
350 clear_trust_password
= generate_random_str(talloc_tos(), DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH
);
351 E_md4hash(clear_trust_password
, md4_trust_password
);
353 /* Set password on machine account */
355 init_samr_CryptPassword(clear_trust_password
,
356 &cli
->user_session_key
,
359 set_info
.info24
.password
= crypt_pwd
;
360 set_info
.info24
.password_expired
= PASS_DONT_CHANGE_AT_NEXT_LOGON
;
362 CHECK_RPC_ERR(rpccli_samr_SetUserInfo2(pipe_hnd
, mem_ctx
,
366 "error setting trust account password");
368 /* Why do we have to try to (re-)set the ACB to be the same as what
369 we passed in the samr_create_dom_user() call? When a NT
370 workstation is joined to a domain by an administrator the
371 acb_info is set to 0x80. For a normal user with "Add
372 workstations to the domain" rights the acb_info is 0x84. I'm
373 not sure whether it is supposed to make a difference or not. NT
374 seems to cope with either value so don't bomb out if the set
375 userinfo2 level 0x10 fails. -tpot */
377 set_info
.info16
.acct_flags
= acb_info
;
379 /* Ignoring the return value is necessary for joining a domain
380 as a normal user with "Add workstation to domain" privilege. */
382 result
= rpccli_samr_SetUserInfo(pipe_hnd
, mem_ctx
,
387 rpccli_samr_Close(pipe_hnd
, mem_ctx
, &user_pol
);
388 TALLOC_FREE(pipe_hnd
); /* Done with this pipe */
390 /* Now check the whole process from top-to-bottom */
392 result
= cli_rpc_pipe_open_noauth(cli
, &ndr_table_netlogon
.syntax_id
,
394 if (!NT_STATUS_IS_OK(result
)) {
395 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
396 nt_errstr(result
) ));
400 result
= rpccli_netlogon_setup_creds(pipe_hnd
,
401 cli
->desthost
, /* server name */
403 global_myname(), /* client name */
404 global_myname(), /* machine account name */
409 if (!NT_STATUS_IS_OK(result
)) {
410 DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
413 if ( NT_STATUS_EQUAL(result
, NT_STATUS_ACCESS_DENIED
) &&
414 (sec_channel_type
== SEC_CHAN_BDC
) ) {
415 d_fprintf(stderr
, _("Please make sure that no computer "
416 "account\nnamed like this machine "
417 "(%s) exists in the domain\n"),
424 /* We can only check the schannel connection if the client is allowed
425 to do this and the server supports it. If not, just assume success
426 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
427 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
429 if (lp_client_schannel() && (neg_flags
& NETLOGON_NEG_SCHANNEL
)) {
430 struct rpc_pipe_client
*netlogon_schannel_pipe
;
432 result
= cli_rpc_pipe_open_schannel_with_key(
433 cli
, &ndr_table_netlogon
.syntax_id
, NCACN_NP
,
434 DCERPC_AUTH_LEVEL_PRIVACY
, domain
, &pipe_hnd
->dc
,
435 &netlogon_schannel_pipe
);
437 if (!NT_STATUS_IS_OK(result
)) {
438 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
441 if ( NT_STATUS_EQUAL(result
, NT_STATUS_ACCESS_DENIED
) &&
442 (sec_channel_type
== SEC_CHAN_BDC
) ) {
443 d_fprintf(stderr
, _("Please make sure that no "
444 "computer account\nnamed "
445 "like this machine (%s) "
446 "exists in the domain\n"),
452 TALLOC_FREE(netlogon_schannel_pipe
);
455 TALLOC_FREE(pipe_hnd
);
457 /* Now store the secret in the secrets database */
459 strupper_m(CONST_DISCARD(char *, domain
));
461 if (!secrets_store_domain_sid(domain
, domain_sid
)) {
462 DEBUG(0, ("error storing domain sid for %s\n", domain
));
466 if (!secrets_store_machine_password(clear_trust_password
, domain
, sec_channel_type
)) {
467 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain
));
470 /* double-check, connection from scratch */
471 result
= net_rpc_join_ok(c
, domain
, cli
->desthost
, &cli
->dest_ss
);
472 retval
= NT_STATUS_IS_OK(result
) ? 0 : -1;
476 /* Display success or failure */
480 fprintf(stderr
,_("Unable to join domain %s.\n"),domain
);
482 printf(_("Joined domain %s.\n"),domain
);
488 TALLOC_FREE(clear_trust_password
);
494 * check that a join is OK
496 * @return A shell status integer (0 for success)
499 int net_rpc_testjoin(struct net_context
*c
, int argc
, const char **argv
)
503 if (c
->display_usage
) {
506 " Test if a join is OK\n"));
510 /* Display success or failure */
511 nt_status
= net_rpc_join_ok(c
, c
->opt_target_workgroup
, NULL
, NULL
);
512 if (!NT_STATUS_IS_OK(nt_status
)) {
513 fprintf(stderr
, _("Join to domain '%s' is not valid: %s\n"),
514 c
->opt_target_workgroup
, nt_errstr(nt_status
));
518 printf(_("Join to '%s' is OK\n"), c
->opt_target_workgroup
);