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 "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"
32 #include "rpc_client/init_lsa.h"
33 #include "libsmb/libsmb.h"
34 #include "../libcli/smb/smbXcli_base.h"
36 /* Macro for checking RPC error codes to make things more readable */
38 #define CHECK_RPC_ERR(rpc, msg) \
39 if (!NT_STATUS_IS_OK(status = rpc)) { \
40 DEBUG(0, (msg ": %s\n", nt_errstr(status))); \
44 #define CHECK_DCERPC_ERR(rpc, msg) \
45 if (!NT_STATUS_IS_OK(status = rpc)) { \
46 DEBUG(0, (msg ": %s\n", nt_errstr(status))); \
49 if (!NT_STATUS_IS_OK(result)) { \
51 DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
56 #define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
57 if (!NT_STATUS_IS_OK(status = rpc)) { \
58 DEBUG(0, debug_args); \
62 #define CHECK_DCERPC_ERR_DEBUG(rpc, debug_args) \
63 if (!NT_STATUS_IS_OK(status = rpc)) { \
64 DEBUG(0, debug_args); \
67 if (!NT_STATUS_IS_OK(result)) { \
69 DEBUG(0, debug_args); \
75 * confirm that a domain join is still valid
77 * @return A shell status integer (0 for success)
80 NTSTATUS
net_rpc_join_ok(struct net_context
*c
, const char *domain
,
82 const struct sockaddr_storage
*server_ss
)
84 enum security_types sec
;
85 unsigned int conn_flags
= NET_FLAGS_PDC
;
86 uint32_t neg_flags
= NETLOGON_NEG_AUTH2_ADS_FLAGS
;
87 struct cli_state
*cli
= NULL
;
88 struct rpc_pipe_client
*pipe_hnd
= NULL
;
89 struct rpc_pipe_client
*netlogon_pipe
= NULL
;
90 NTSTATUS ntret
= NT_STATUS_UNSUCCESSFUL
;
92 sec
= (enum security_types
)lp_security();
95 /* Connect to IPC$ using machine account's credentials. We don't use anonymous
96 connection here, as it may be denied by server's local policy. */
97 net_use_machine_account(c
);
100 /* some servers (e.g. WinNT) don't accept machine-authenticated
102 conn_flags
|= NET_FLAGS_ANONYMOUS
;
105 /* Connect to remote machine */
106 ntret
= net_make_ipc_connection_ex(c
, domain
, server
, server_ss
,
108 if (!NT_STATUS_IS_OK(ntret
)) {
112 /* Setup the creds as though we're going to do schannel... */
113 ntret
= get_schannel_session_key(cli
, domain
, &neg_flags
,
116 /* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
117 to negotiate schannel, but the creds were set up ok. That'll have to do. */
119 if (!NT_STATUS_IS_OK(ntret
)) {
120 if (NT_STATUS_EQUAL(ntret
, NT_STATUS_INVALID_NETWORK_RESPONSE
)) {
124 DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
125 "key from server %s for domain %s. Error was %s\n",
126 smbXcli_conn_remote_name(cli
->conn
), domain
, nt_errstr(ntret
) ));
132 /* Only do the rest of the schannel test if the client is allowed to do this. */
133 if (!lp_client_schannel()) {
139 ntret
= cli_rpc_pipe_open_schannel_with_key(
140 cli
, &ndr_table_netlogon
.syntax_id
, NCACN_NP
,
141 DCERPC_AUTH_LEVEL_PRIVACY
,
142 domain
, &netlogon_pipe
->dc
, &pipe_hnd
);
144 if (!NT_STATUS_IS_OK(ntret
)) {
145 DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
146 "on netlogon pipe to server %s for domain %s. Error was %s\n",
147 smbXcli_conn_remote_name(cli
->conn
), domain
, nt_errstr(ntret
) ));
149 * Note: here, we have:
150 * (pipe_hnd != NULL) if and only if NT_STATUS_IS_OK(ntret)
159 * Join a domain using the administrator username and password
161 * @param argc Standard main() style argc
162 * @param argc Standard main() style argv. Initial components are already
163 * stripped. Currently not used.
164 * @return A shell status integer (0 for success)
168 int net_rpc_join_newstyle(struct net_context
*c
, int argc
, const char **argv
)
171 /* libsmb variables */
173 struct cli_state
*cli
;
175 uint32 acb_info
= ACB_WSTRUST
;
176 uint32_t neg_flags
= NETLOGON_NEG_AUTH2_ADS_FLAGS
;
177 enum netr_SchannelType sec_channel_type
;
178 struct rpc_pipe_client
*pipe_hnd
= NULL
;
179 struct dcerpc_binding_handle
*b
= NULL
;
183 struct policy_handle lsa_pol
, sam_pol
, domain_pol
, user_pol
;
184 struct dom_sid
*domain_sid
;
189 char *clear_trust_password
= NULL
;
190 struct samr_CryptPassword crypt_pwd
;
191 uchar md4_trust_password
[16];
192 union samr_UserInfo set_info
;
196 NTSTATUS status
, result
;
198 const char *domain
= NULL
;
200 struct lsa_String lsa_acct_name
;
202 uint32_t access_granted
= 0;
203 union lsa_PolicyInformation
*info
= NULL
;
204 struct samr_Ids user_rids
;
205 struct samr_Ids name_types
;
208 /* check what type of join */
210 sec_channel_type
= get_sec_channel_type(argv
[0]);
212 sec_channel_type
= get_sec_channel_type(NULL
);
215 switch (sec_channel_type
) {
217 acb_info
= ACB_WSTRUST
;
220 acb_info
= ACB_SVRTRUST
;
223 case SEC_CHAN_DOMAIN
:
224 acb_info
= ACB_DOMTRUST
;
228 DEBUG(0,("secure channel type %d not yet supported\n",
233 /* Make authenticated connection to remote machine */
235 status
= net_make_ipc_connection(c
, NET_FLAGS_PDC
, &cli
);
236 if (!NT_STATUS_IS_OK(status
)) {
240 if (!(mem_ctx
= talloc_init("net_rpc_join_newstyle"))) {
241 DEBUG(0, ("Could not initialise talloc context\n"));
245 /* Fetch domain sid */
247 status
= cli_rpc_pipe_open_noauth(cli
, &ndr_table_lsarpc
.syntax_id
,
249 if (!NT_STATUS_IS_OK(status
)) {
250 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
251 nt_errstr(status
) ));
255 b
= pipe_hnd
->binding_handle
;
257 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd
, mem_ctx
, true,
258 SEC_FLAG_MAXIMUM_ALLOWED
,
260 "error opening lsa policy handle");
262 CHECK_DCERPC_ERR(dcerpc_lsa_QueryInfoPolicy(b
, mem_ctx
,
264 LSA_POLICY_INFO_ACCOUNT_DOMAIN
,
267 "error querying info policy");
269 domain
= info
->account_domain
.name
.string
;
270 domain_sid
= info
->account_domain
.sid
;
272 dcerpc_lsa_Close(b
, mem_ctx
, &lsa_pol
, &result
);
273 TALLOC_FREE(pipe_hnd
); /* Done with this pipe */
275 /* Bail out if domain didn't get set. */
277 DEBUG(0, ("Could not get domain name.\n"));
281 /* Create domain user */
282 status
= cli_rpc_pipe_open_noauth(cli
, &ndr_table_samr
.syntax_id
,
284 if (!NT_STATUS_IS_OK(status
)) {
285 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
286 nt_errstr(status
) ));
290 b
= pipe_hnd
->binding_handle
;
292 CHECK_DCERPC_ERR(dcerpc_samr_Connect2(b
, mem_ctx
,
294 SAMR_ACCESS_ENUM_DOMAINS
295 | SAMR_ACCESS_LOOKUP_DOMAIN
,
298 "could not connect to SAM database");
301 CHECK_DCERPC_ERR(dcerpc_samr_OpenDomain(b
, mem_ctx
,
303 SAMR_DOMAIN_ACCESS_LOOKUP_INFO_1
304 | SAMR_DOMAIN_ACCESS_CREATE_USER
305 | SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT
,
309 "could not open domain");
311 /* Create domain user */
312 if ((acct_name
= talloc_asprintf(mem_ctx
, "%s$", lp_netbios_name())) == NULL
) {
313 status
= NT_STATUS_NO_MEMORY
;
316 strlower_m(acct_name
);
318 init_lsa_String(&lsa_acct_name
, acct_name
);
320 acct_flags
= SEC_GENERIC_READ
| SEC_GENERIC_WRITE
| SEC_GENERIC_EXECUTE
|
321 SEC_STD_WRITE_DAC
| SEC_STD_DELETE
|
322 SAMR_USER_ACCESS_SET_PASSWORD
|
323 SAMR_USER_ACCESS_GET_ATTRIBUTES
|
324 SAMR_USER_ACCESS_SET_ATTRIBUTES
;
326 DEBUG(10, ("Creating account with flags: %d\n",acct_flags
));
328 status
= dcerpc_samr_CreateUser2(b
, mem_ctx
,
337 if (!NT_STATUS_IS_OK(status
)) {
340 if (!NT_STATUS_IS_OK(result
) &&
341 !NT_STATUS_EQUAL(result
, NT_STATUS_USER_EXISTS
)) {
343 d_fprintf(stderr
,_("Creation of workstation account failed\n"));
345 /* If NT_STATUS_ACCESS_DENIED then we have a valid
346 username/password combo but the user does not have
347 administrator access. */
349 if (NT_STATUS_V(result
) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED
))
350 d_fprintf(stderr
, _("User specified does not have "
351 "administrator privileges\n"));
356 /* We *must* do this.... don't ask... */
358 if (NT_STATUS_IS_OK(result
)) {
359 dcerpc_samr_Close(b
, mem_ctx
, &user_pol
, &result
);
362 CHECK_DCERPC_ERR_DEBUG(dcerpc_samr_LookupNames(b
, mem_ctx
,
369 ("error looking up rid for user %s: %s/%s\n",
370 acct_name
, nt_errstr(status
), nt_errstr(result
)));
372 if (name_types
.ids
[0] != SID_NAME_USER
) {
373 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name
, name_types
.ids
[0]));
377 user_rid
= user_rids
.ids
[0];
379 /* Open handle on user */
381 CHECK_DCERPC_ERR_DEBUG(
382 dcerpc_samr_OpenUser(b
, mem_ctx
,
384 SEC_FLAG_MAXIMUM_ALLOWED
,
388 ("could not re-open existing user %s: %s/%s\n",
389 acct_name
, nt_errstr(status
), nt_errstr(result
)));
391 /* Create a random machine account password */
393 clear_trust_password
= generate_random_str(talloc_tos(), DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH
);
394 E_md4hash(clear_trust_password
, md4_trust_password
);
396 /* Set password on machine account */
398 init_samr_CryptPassword(clear_trust_password
,
399 &cli
->user_session_key
,
402 set_info
.info24
.password
= crypt_pwd
;
403 set_info
.info24
.password_expired
= PASS_DONT_CHANGE_AT_NEXT_LOGON
;
405 CHECK_DCERPC_ERR(dcerpc_samr_SetUserInfo2(b
, mem_ctx
,
410 "error setting trust account password");
412 /* Why do we have to try to (re-)set the ACB to be the same as what
413 we passed in the samr_create_dom_user() call? When a NT
414 workstation is joined to a domain by an administrator the
415 acb_info is set to 0x80. For a normal user with "Add
416 workstations to the domain" rights the acb_info is 0x84. I'm
417 not sure whether it is supposed to make a difference or not. NT
418 seems to cope with either value so don't bomb out if the set
419 userinfo2 level 0x10 fails. -tpot */
421 set_info
.info16
.acct_flags
= acb_info
;
423 /* Ignoring the return value is necessary for joining a domain
424 as a normal user with "Add workstation to domain" privilege. */
426 status
= dcerpc_samr_SetUserInfo(b
, mem_ctx
,
432 dcerpc_samr_Close(b
, mem_ctx
, &user_pol
, &result
);
433 TALLOC_FREE(pipe_hnd
); /* Done with this pipe */
435 /* Now check the whole process from top-to-bottom */
437 status
= cli_rpc_pipe_open_noauth(cli
, &ndr_table_netlogon
.syntax_id
,
439 if (!NT_STATUS_IS_OK(status
)) {
440 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
441 nt_errstr(status
) ));
445 status
= rpccli_netlogon_setup_creds(pipe_hnd
,
446 pipe_hnd
->desthost
, /* server name */
448 lp_netbios_name(), /* client name */
449 lp_netbios_name(), /* machine account name */
454 if (!NT_STATUS_IS_OK(status
)) {
455 DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
458 if ( NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
) &&
459 (sec_channel_type
== SEC_CHAN_BDC
) ) {
460 d_fprintf(stderr
, _("Please make sure that no computer "
461 "account\nnamed like this machine "
462 "(%s) exists in the domain\n"),
469 /* We can only check the schannel connection if the client is allowed
470 to do this and the server supports it. If not, just assume success
471 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
472 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
474 if (lp_client_schannel() && (neg_flags
& NETLOGON_NEG_SCHANNEL
)) {
475 struct rpc_pipe_client
*netlogon_schannel_pipe
;
477 status
= cli_rpc_pipe_open_schannel_with_key(
478 cli
, &ndr_table_netlogon
.syntax_id
, NCACN_NP
,
479 DCERPC_AUTH_LEVEL_PRIVACY
, domain
, &pipe_hnd
->dc
,
480 &netlogon_schannel_pipe
);
482 if (!NT_STATUS_IS_OK(status
)) {
483 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
486 if ( NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
) &&
487 (sec_channel_type
== SEC_CHAN_BDC
) ) {
488 d_fprintf(stderr
, _("Please make sure that no "
489 "computer account\nnamed "
490 "like this machine (%s) "
491 "exists in the domain\n"),
497 TALLOC_FREE(netlogon_schannel_pipe
);
500 TALLOC_FREE(pipe_hnd
);
502 /* Now store the secret in the secrets database */
504 strupper_m(discard_const_p(char, domain
));
506 if (!secrets_store_domain_sid(domain
, domain_sid
)) {
507 DEBUG(0, ("error storing domain sid for %s\n", domain
));
511 if (!secrets_store_machine_password(clear_trust_password
, domain
, sec_channel_type
)) {
512 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain
));
515 /* double-check, connection from scratch */
516 status
= net_rpc_join_ok(c
, domain
, smbXcli_conn_remote_name(cli
->conn
),
517 smbXcli_conn_remote_sockaddr(cli
->conn
));
518 retval
= NT_STATUS_IS_OK(status
) ? 0 : -1;
522 /* Display success or failure */
526 fprintf(stderr
,_("Unable to join domain %s.\n"),domain
);
528 printf(_("Joined domain %s.\n"),domain
);
534 TALLOC_FREE(clear_trust_password
);
540 * check that a join is OK
542 * @return A shell status integer (0 for success)
545 int net_rpc_testjoin(struct net_context
*c
, int argc
, const char **argv
)
549 if (c
->display_usage
) {
552 " Test if a join is OK\n"));
556 /* Display success or failure */
557 nt_status
= net_rpc_join_ok(c
, c
->opt_target_workgroup
, NULL
, NULL
);
558 if (!NT_STATUS_IS_OK(nt_status
)) {
559 fprintf(stderr
, _("Join to domain '%s' is not valid: %s\n"),
560 c
->opt_target_workgroup
, nt_errstr(nt_status
));
564 printf(_("Join to '%s' is OK\n"), c
->opt_target_workgroup
);