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"
35 /* Macro for checking RPC error codes to make things more readable */
37 #define CHECK_RPC_ERR(rpc, msg) \
38 if (!NT_STATUS_IS_OK(status = rpc)) { \
39 DEBUG(0, (msg ": %s\n", nt_errstr(status))); \
43 #define CHECK_DCERPC_ERR(rpc, msg) \
44 if (!NT_STATUS_IS_OK(status = rpc)) { \
45 DEBUG(0, (msg ": %s\n", nt_errstr(status))); \
48 if (!NT_STATUS_IS_OK(result)) { \
50 DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
55 #define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
56 if (!NT_STATUS_IS_OK(status = rpc)) { \
57 DEBUG(0, debug_args); \
61 #define CHECK_DCERPC_ERR_DEBUG(rpc, debug_args) \
62 if (!NT_STATUS_IS_OK(status = rpc)) { \
63 DEBUG(0, debug_args); \
66 if (!NT_STATUS_IS_OK(result)) { \
68 DEBUG(0, debug_args); \
74 * confirm that a domain join is still valid
76 * @return A shell status integer (0 for success)
79 NTSTATUS
net_rpc_join_ok(struct net_context
*c
, const char *domain
,
80 const char *server
, struct sockaddr_storage
*pss
)
82 enum security_types sec
;
83 unsigned int conn_flags
= NET_FLAGS_PDC
;
84 uint32_t neg_flags
= NETLOGON_NEG_AUTH2_ADS_FLAGS
;
85 struct cli_state
*cli
= NULL
;
86 struct rpc_pipe_client
*pipe_hnd
= NULL
;
87 struct rpc_pipe_client
*netlogon_pipe
= NULL
;
88 NTSTATUS ntret
= NT_STATUS_UNSUCCESSFUL
;
90 sec
= (enum security_types
)lp_security();
93 /* Connect to IPC$ using machine account's credentials. We don't use anonymous
94 connection here, as it may be denied by server's local policy. */
95 net_use_machine_account(c
);
98 /* some servers (e.g. WinNT) don't accept machine-authenticated
100 conn_flags
|= NET_FLAGS_ANONYMOUS
;
103 /* Connect to remote machine */
104 ntret
= net_make_ipc_connection_ex(c
, domain
, server
, pss
, conn_flags
,
106 if (!NT_STATUS_IS_OK(ntret
)) {
110 /* Setup the creds as though we're going to do schannel... */
111 ntret
= get_schannel_session_key(cli
, domain
, &neg_flags
,
114 /* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
115 to negotiate schannel, but the creds were set up ok. That'll have to do. */
117 if (!NT_STATUS_IS_OK(ntret
)) {
118 if (NT_STATUS_EQUAL(ntret
, NT_STATUS_INVALID_NETWORK_RESPONSE
)) {
122 DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
123 "key from server %s for domain %s. Error was %s\n",
124 cli
->desthost
, domain
, nt_errstr(ntret
) ));
130 /* Only do the rest of the schannel test if the client is allowed to do this. */
131 if (!lp_client_schannel()) {
137 ntret
= cli_rpc_pipe_open_schannel_with_key(
138 cli
, &ndr_table_netlogon
.syntax_id
, NCACN_NP
,
139 DCERPC_AUTH_LEVEL_PRIVACY
,
140 domain
, &netlogon_pipe
->dc
, &pipe_hnd
);
142 if (!NT_STATUS_IS_OK(ntret
)) {
143 DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
144 "on netlogon pipe to server %s for domain %s. Error was %s\n",
145 cli
->desthost
, domain
, nt_errstr(ntret
) ));
147 * Note: here, we have:
148 * (pipe_hnd != NULL) if and only if NT_STATUS_IS_OK(ntret)
157 * Join a domain using the administrator username and password
159 * @param argc Standard main() style argc
160 * @param argc Standard main() style argv. Initial components are already
161 * stripped. Currently not used.
162 * @return A shell status integer (0 for success)
166 int net_rpc_join_newstyle(struct net_context
*c
, int argc
, const char **argv
)
169 /* libsmb variables */
171 struct cli_state
*cli
;
173 uint32 acb_info
= ACB_WSTRUST
;
174 uint32_t neg_flags
= NETLOGON_NEG_AUTH2_ADS_FLAGS
;
175 enum netr_SchannelType sec_channel_type
;
176 struct rpc_pipe_client
*pipe_hnd
= NULL
;
177 struct dcerpc_binding_handle
*b
= NULL
;
181 struct policy_handle lsa_pol
, sam_pol
, domain_pol
, user_pol
;
182 struct dom_sid
*domain_sid
;
187 char *clear_trust_password
= NULL
;
188 struct samr_CryptPassword crypt_pwd
;
189 uchar md4_trust_password
[16];
190 union samr_UserInfo set_info
;
194 NTSTATUS status
, result
;
196 const char *domain
= NULL
;
198 struct lsa_String lsa_acct_name
;
200 uint32_t access_granted
= 0;
201 union lsa_PolicyInformation
*info
= NULL
;
202 struct samr_Ids user_rids
;
203 struct samr_Ids name_types
;
206 /* check what type of join */
208 sec_channel_type
= get_sec_channel_type(argv
[0]);
210 sec_channel_type
= get_sec_channel_type(NULL
);
213 switch (sec_channel_type
) {
215 acb_info
= ACB_WSTRUST
;
218 acb_info
= ACB_SVRTRUST
;
221 case SEC_CHAN_DOMAIN
:
222 acb_info
= ACB_DOMTRUST
;
226 DEBUG(0,("secure channel type %d not yet supported\n",
231 /* Make authenticated connection to remote machine */
233 status
= net_make_ipc_connection(c
, NET_FLAGS_PDC
, &cli
);
234 if (!NT_STATUS_IS_OK(status
)) {
238 if (!(mem_ctx
= talloc_init("net_rpc_join_newstyle"))) {
239 DEBUG(0, ("Could not initialise talloc context\n"));
243 /* Fetch domain sid */
245 status
= cli_rpc_pipe_open_noauth(cli
, &ndr_table_lsarpc
.syntax_id
,
247 if (!NT_STATUS_IS_OK(status
)) {
248 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
249 nt_errstr(status
) ));
253 b
= pipe_hnd
->binding_handle
;
255 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd
, mem_ctx
, true,
256 SEC_FLAG_MAXIMUM_ALLOWED
,
258 "error opening lsa policy handle");
260 CHECK_DCERPC_ERR(dcerpc_lsa_QueryInfoPolicy(b
, mem_ctx
,
262 LSA_POLICY_INFO_ACCOUNT_DOMAIN
,
265 "error querying info policy");
267 domain
= info
->account_domain
.name
.string
;
268 domain_sid
= info
->account_domain
.sid
;
270 dcerpc_lsa_Close(b
, mem_ctx
, &lsa_pol
, &result
);
271 TALLOC_FREE(pipe_hnd
); /* Done with this pipe */
273 /* Bail out if domain didn't get set. */
275 DEBUG(0, ("Could not get domain name.\n"));
279 /* Create domain user */
280 status
= cli_rpc_pipe_open_noauth(cli
, &ndr_table_samr
.syntax_id
,
282 if (!NT_STATUS_IS_OK(status
)) {
283 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
284 nt_errstr(status
) ));
288 b
= pipe_hnd
->binding_handle
;
290 CHECK_DCERPC_ERR(dcerpc_samr_Connect2(b
, mem_ctx
,
292 SAMR_ACCESS_ENUM_DOMAINS
293 | SAMR_ACCESS_LOOKUP_DOMAIN
,
296 "could not connect to SAM database");
299 CHECK_DCERPC_ERR(dcerpc_samr_OpenDomain(b
, mem_ctx
,
301 SAMR_DOMAIN_ACCESS_LOOKUP_INFO_1
302 | SAMR_DOMAIN_ACCESS_CREATE_USER
303 | SAMR_DOMAIN_ACCESS_OPEN_ACCOUNT
,
307 "could not open domain");
309 /* Create domain user */
310 if ((acct_name
= talloc_asprintf(mem_ctx
, "%s$", global_myname())) == NULL
) {
311 status
= NT_STATUS_NO_MEMORY
;
314 strlower_m(acct_name
);
316 init_lsa_String(&lsa_acct_name
, acct_name
);
318 acct_flags
= SEC_GENERIC_READ
| SEC_GENERIC_WRITE
| SEC_GENERIC_EXECUTE
|
319 SEC_STD_WRITE_DAC
| SEC_STD_DELETE
|
320 SAMR_USER_ACCESS_SET_PASSWORD
|
321 SAMR_USER_ACCESS_GET_ATTRIBUTES
|
322 SAMR_USER_ACCESS_SET_ATTRIBUTES
;
324 DEBUG(10, ("Creating account with flags: %d\n",acct_flags
));
326 status
= dcerpc_samr_CreateUser2(b
, mem_ctx
,
335 if (!NT_STATUS_IS_OK(status
)) {
338 if (!NT_STATUS_IS_OK(result
) &&
339 !NT_STATUS_EQUAL(result
, NT_STATUS_USER_EXISTS
)) {
341 d_fprintf(stderr
,_("Creation of workstation account failed\n"));
343 /* If NT_STATUS_ACCESS_DENIED then we have a valid
344 username/password combo but the user does not have
345 administrator access. */
347 if (NT_STATUS_V(result
) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED
))
348 d_fprintf(stderr
, _("User specified does not have "
349 "administrator privileges\n"));
354 /* We *must* do this.... don't ask... */
356 if (NT_STATUS_IS_OK(result
)) {
357 dcerpc_samr_Close(b
, mem_ctx
, &user_pol
, &result
);
360 CHECK_DCERPC_ERR_DEBUG(dcerpc_samr_LookupNames(b
, mem_ctx
,
367 ("error looking up rid for user %s: %s/%s\n",
368 acct_name
, nt_errstr(status
), nt_errstr(result
)));
370 if (name_types
.ids
[0] != SID_NAME_USER
) {
371 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name
, name_types
.ids
[0]));
375 user_rid
= user_rids
.ids
[0];
377 /* Open handle on user */
379 CHECK_DCERPC_ERR_DEBUG(
380 dcerpc_samr_OpenUser(b
, mem_ctx
,
382 SEC_FLAG_MAXIMUM_ALLOWED
,
386 ("could not re-open existing user %s: %s/%s\n",
387 acct_name
, nt_errstr(status
), nt_errstr(result
)));
389 /* Create a random machine account password */
391 clear_trust_password
= generate_random_str(talloc_tos(), DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH
);
392 E_md4hash(clear_trust_password
, md4_trust_password
);
394 /* Set password on machine account */
396 init_samr_CryptPassword(clear_trust_password
,
397 &cli
->user_session_key
,
400 set_info
.info24
.password
= crypt_pwd
;
401 set_info
.info24
.password_expired
= PASS_DONT_CHANGE_AT_NEXT_LOGON
;
403 CHECK_DCERPC_ERR(dcerpc_samr_SetUserInfo2(b
, mem_ctx
,
408 "error setting trust account password");
410 /* Why do we have to try to (re-)set the ACB to be the same as what
411 we passed in the samr_create_dom_user() call? When a NT
412 workstation is joined to a domain by an administrator the
413 acb_info is set to 0x80. For a normal user with "Add
414 workstations to the domain" rights the acb_info is 0x84. I'm
415 not sure whether it is supposed to make a difference or not. NT
416 seems to cope with either value so don't bomb out if the set
417 userinfo2 level 0x10 fails. -tpot */
419 set_info
.info16
.acct_flags
= acb_info
;
421 /* Ignoring the return value is necessary for joining a domain
422 as a normal user with "Add workstation to domain" privilege. */
424 status
= dcerpc_samr_SetUserInfo(b
, mem_ctx
,
430 dcerpc_samr_Close(b
, mem_ctx
, &user_pol
, &result
);
431 TALLOC_FREE(pipe_hnd
); /* Done with this pipe */
433 /* Now check the whole process from top-to-bottom */
435 status
= cli_rpc_pipe_open_noauth(cli
, &ndr_table_netlogon
.syntax_id
,
437 if (!NT_STATUS_IS_OK(status
)) {
438 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
439 nt_errstr(status
) ));
443 status
= rpccli_netlogon_setup_creds(pipe_hnd
,
444 cli
->desthost
, /* server name */
446 global_myname(), /* client name */
447 global_myname(), /* machine account name */
452 if (!NT_STATUS_IS_OK(status
)) {
453 DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
456 if ( NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
) &&
457 (sec_channel_type
== SEC_CHAN_BDC
) ) {
458 d_fprintf(stderr
, _("Please make sure that no computer "
459 "account\nnamed like this machine "
460 "(%s) exists in the domain\n"),
467 /* We can only check the schannel connection if the client is allowed
468 to do this and the server supports it. If not, just assume success
469 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
470 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
472 if (lp_client_schannel() && (neg_flags
& NETLOGON_NEG_SCHANNEL
)) {
473 struct rpc_pipe_client
*netlogon_schannel_pipe
;
475 status
= cli_rpc_pipe_open_schannel_with_key(
476 cli
, &ndr_table_netlogon
.syntax_id
, NCACN_NP
,
477 DCERPC_AUTH_LEVEL_PRIVACY
, domain
, &pipe_hnd
->dc
,
478 &netlogon_schannel_pipe
);
480 if (!NT_STATUS_IS_OK(status
)) {
481 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
484 if ( NT_STATUS_EQUAL(status
, NT_STATUS_ACCESS_DENIED
) &&
485 (sec_channel_type
== SEC_CHAN_BDC
) ) {
486 d_fprintf(stderr
, _("Please make sure that no "
487 "computer account\nnamed "
488 "like this machine (%s) "
489 "exists in the domain\n"),
495 TALLOC_FREE(netlogon_schannel_pipe
);
498 TALLOC_FREE(pipe_hnd
);
500 /* Now store the secret in the secrets database */
502 strupper_m(CONST_DISCARD(char *, domain
));
504 if (!secrets_store_domain_sid(domain
, domain_sid
)) {
505 DEBUG(0, ("error storing domain sid for %s\n", domain
));
509 if (!secrets_store_machine_password(clear_trust_password
, domain
, sec_channel_type
)) {
510 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain
));
513 /* double-check, connection from scratch */
514 status
= net_rpc_join_ok(c
, domain
, cli
->desthost
, &cli
->dest_ss
);
515 retval
= NT_STATUS_IS_OK(status
) ? 0 : -1;
519 /* Display success or failure */
523 fprintf(stderr
,_("Unable to join domain %s.\n"),domain
);
525 printf(_("Joined domain %s.\n"),domain
);
531 TALLOC_FREE(clear_trust_password
);
537 * check that a join is OK
539 * @return A shell status integer (0 for success)
542 int net_rpc_testjoin(struct net_context
*c
, int argc
, const char **argv
)
546 if (c
->display_usage
) {
549 " Test if a join is OK\n"));
553 /* Display success or failure */
554 nt_status
= net_rpc_join_ok(c
, c
->opt_target_workgroup
, NULL
, NULL
);
555 if (!NT_STATUS_IS_OK(nt_status
)) {
556 fprintf(stderr
, _("Join to domain '%s' is not valid: %s\n"),
557 c
->opt_target_workgroup
, nt_errstr(nt_status
));
561 printf(_("Join to '%s' is OK\n"), c
->opt_target_workgroup
);