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"
24 /* Macro for checking RPC error codes to make things more readable */
26 #define CHECK_RPC_ERR(rpc, msg) \
27 if (!NT_STATUS_IS_OK(result = rpc)) { \
28 DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
32 #define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
33 if (!NT_STATUS_IS_OK(result = rpc)) { \
34 DEBUG(0, debug_args); \
39 * confirm that a domain join is still valid
41 * @return A shell status integer (0 for success)
44 NTSTATUS
net_rpc_join_ok(struct net_context
*c
, const char *domain
,
45 const char *server
, struct sockaddr_storage
*pss
)
47 enum security_types sec
;
48 unsigned int conn_flags
= NET_FLAGS_PDC
;
49 uint32_t neg_flags
= NETLOGON_NEG_AUTH2_ADS_FLAGS
;
50 struct cli_state
*cli
= NULL
;
51 struct rpc_pipe_client
*pipe_hnd
= NULL
;
52 struct rpc_pipe_client
*netlogon_pipe
= NULL
;
53 NTSTATUS ntret
= NT_STATUS_UNSUCCESSFUL
;
55 sec
= (enum security_types
)lp_security();
58 /* Connect to IPC$ using machine account's credentials. We don't use anonymous
59 connection here, as it may be denied by server's local policy. */
60 net_use_machine_account(c
);
63 /* some servers (e.g. WinNT) don't accept machine-authenticated
65 conn_flags
|= NET_FLAGS_ANONYMOUS
;
68 /* Connect to remote machine */
69 ntret
= net_make_ipc_connection_ex(c
, domain
, server
, pss
, conn_flags
,
71 if (!NT_STATUS_IS_OK(ntret
)) {
75 /* Setup the creds as though we're going to do schannel... */
76 netlogon_pipe
= get_schannel_session_key(cli
, domain
, &neg_flags
, &ntret
);
78 /* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
79 to negotiate schannel, but the creds were set up ok. That'll have to do. */
82 if (NT_STATUS_EQUAL(ntret
, NT_STATUS_INVALID_NETWORK_RESPONSE
)) {
86 DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
87 "key from server %s for domain %s. Error was %s\n",
88 cli
->desthost
, domain
, nt_errstr(ntret
) ));
94 /* Only do the rest of the schannel test if the client is allowed to do this. */
95 if (!lp_client_schannel()) {
101 pipe_hnd
= cli_rpc_pipe_open_schannel_with_key(cli
, PI_NETLOGON
,
102 PIPE_AUTH_LEVEL_PRIVACY
,
103 domain
, netlogon_pipe
->dc
, &ntret
);
106 DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
107 "on netlogon pipe to server %s for domain %s. Error was %s\n",
108 cli
->desthost
, domain
, nt_errstr(ntret
) ));
110 * Note: here, we have:
111 * (pipe_hnd != NULL) if and only if NT_STATUS_IS_OK(ntret)
120 * Join a domain using the administrator username and password
122 * @param argc Standard main() style argc
123 * @param argc Standard main() style argv. Initial components are already
124 * stripped. Currently not used.
125 * @return A shell status integer (0 for success)
129 int net_rpc_join_newstyle(struct net_context
*c
, int argc
, const char **argv
)
132 /* libsmb variables */
134 struct cli_state
*cli
;
136 uint32 acb_info
= ACB_WSTRUST
;
137 uint32_t neg_flags
= NETLOGON_NEG_AUTH2_ADS_FLAGS
;
138 uint32 sec_channel_type
;
139 struct rpc_pipe_client
*pipe_hnd
= NULL
;
143 POLICY_HND lsa_pol
, sam_pol
, domain_pol
, user_pol
;
149 char *clear_trust_password
= NULL
;
151 uchar md4_trust_password
[16];
152 union samr_UserInfo set_info
;
158 const char *domain
= NULL
;
160 struct lsa_String lsa_acct_name
;
162 uint32_t access_granted
= 0;
163 union lsa_PolicyInformation
*info
= NULL
;
164 struct samr_Ids user_rids
;
165 struct samr_Ids name_types
;
167 /* check what type of join */
169 sec_channel_type
= get_sec_channel_type(argv
[0]);
171 sec_channel_type
= get_sec_channel_type(NULL
);
174 switch (sec_channel_type
) {
176 acb_info
= ACB_WSTRUST
;
179 acb_info
= ACB_SVRTRUST
;
182 case SEC_CHAN_DOMAIN
:
183 acb_info
= ACB_DOMTRUST
;
188 /* Make authenticated connection to remote machine */
190 result
= net_make_ipc_connection(c
, NET_FLAGS_PDC
, &cli
);
191 if (!NT_STATUS_IS_OK(result
)) {
195 if (!(mem_ctx
= talloc_init("net_rpc_join_newstyle"))) {
196 DEBUG(0, ("Could not initialise talloc context\n"));
200 /* Fetch domain sid */
202 pipe_hnd
= cli_rpc_pipe_open_noauth(cli
, PI_LSARPC
, &result
);
204 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
205 nt_errstr(result
) ));
210 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd
, mem_ctx
, true,
211 SEC_RIGHTS_MAXIMUM_ALLOWED
,
213 "error opening lsa policy handle");
215 CHECK_RPC_ERR(rpccli_lsa_QueryInfoPolicy(pipe_hnd
, mem_ctx
,
217 LSA_POLICY_INFO_ACCOUNT_DOMAIN
,
219 "error querying info policy");
221 domain
= info
->account_domain
.name
.string
;
222 domain_sid
= info
->account_domain
.sid
;
224 rpccli_lsa_Close(pipe_hnd
, mem_ctx
, &lsa_pol
);
225 TALLOC_FREE(pipe_hnd
); /* Done with this pipe */
227 /* Bail out if domain didn't get set. */
229 DEBUG(0, ("Could not get domain name.\n"));
233 /* Create domain user */
234 pipe_hnd
= cli_rpc_pipe_open_noauth(cli
, PI_SAMR
, &result
);
236 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
237 nt_errstr(result
) ));
241 CHECK_RPC_ERR(rpccli_samr_Connect2(pipe_hnd
, mem_ctx
,
243 SEC_RIGHTS_MAXIMUM_ALLOWED
,
245 "could not connect to SAM database");
248 CHECK_RPC_ERR(rpccli_samr_OpenDomain(pipe_hnd
, mem_ctx
,
250 SEC_RIGHTS_MAXIMUM_ALLOWED
,
253 "could not open domain");
255 /* Create domain user */
256 if ((acct_name
= talloc_asprintf(mem_ctx
, "%s$", global_myname())) == NULL
) {
257 result
= NT_STATUS_NO_MEMORY
;
260 strlower_m(acct_name
);
262 init_lsa_String(&lsa_acct_name
, acct_name
);
264 acct_flags
= SEC_GENERIC_READ
| SEC_GENERIC_WRITE
| SEC_GENERIC_EXECUTE
|
265 SEC_STD_WRITE_DAC
| SEC_STD_DELETE
|
266 SAMR_USER_ACCESS_SET_PASSWORD
|
267 SAMR_USER_ACCESS_GET_ATTRIBUTES
|
268 SAMR_USER_ACCESS_SET_ATTRIBUTES
;
270 DEBUG(10, ("Creating account with flags: %d\n",acct_flags
));
272 result
= rpccli_samr_CreateUser2(pipe_hnd
, mem_ctx
,
281 if (!NT_STATUS_IS_OK(result
) &&
282 !NT_STATUS_EQUAL(result
, NT_STATUS_USER_EXISTS
)) {
283 d_fprintf(stderr
, "Creation of workstation account failed\n");
285 /* If NT_STATUS_ACCESS_DENIED then we have a valid
286 username/password combo but the user does not have
287 administrator access. */
289 if (NT_STATUS_V(result
) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED
))
290 d_fprintf(stderr
, "User specified does not have administrator privileges\n");
295 /* We *must* do this.... don't ask... */
297 if (NT_STATUS_IS_OK(result
)) {
298 rpccli_samr_Close(pipe_hnd
, mem_ctx
, &user_pol
);
301 CHECK_RPC_ERR_DEBUG(rpccli_samr_LookupNames(pipe_hnd
, mem_ctx
,
307 ("error looking up rid for user %s: %s\n",
308 acct_name
, nt_errstr(result
)));
310 if (name_types
.ids
[0] != SID_NAME_USER
) {
311 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name
, name_types
.ids
[0]));
315 user_rid
= user_rids
.ids
[0];
317 /* Open handle on user */
320 rpccli_samr_OpenUser(pipe_hnd
, mem_ctx
,
322 SEC_RIGHTS_MAXIMUM_ALLOWED
,
325 ("could not re-open existing user %s: %s\n",
326 acct_name
, nt_errstr(result
)));
328 /* Create a random machine account password */
332 str
= generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH
);
333 clear_trust_password
= SMB_STRDUP(str
);
334 E_md4hash(clear_trust_password
, md4_trust_password
);
337 encode_pw_buffer(pwbuf
, clear_trust_password
, STR_UNICODE
);
339 /* Set password on machine account */
341 init_samr_user_info24(&set_info
.info24
, pwbuf
, 24);
343 SamOEMhashBlob(set_info
.info24
.password
.data
, 516,
344 &cli
->user_session_key
);
346 CHECK_RPC_ERR(rpccli_samr_SetUserInfo2(pipe_hnd
, mem_ctx
,
350 "error setting trust account password");
352 /* Why do we have to try to (re-)set the ACB to be the same as what
353 we passed in the samr_create_dom_user() call? When a NT
354 workstation is joined to a domain by an administrator the
355 acb_info is set to 0x80. For a normal user with "Add
356 workstations to the domain" rights the acb_info is 0x84. I'm
357 not sure whether it is supposed to make a difference or not. NT
358 seems to cope with either value so don't bomb out if the set
359 userinfo2 level 0x10 fails. -tpot */
361 set_info
.info16
.acct_flags
= acb_info
;
363 /* Ignoring the return value is necessary for joining a domain
364 as a normal user with "Add workstation to domain" privilege. */
366 result
= rpccli_samr_SetUserInfo(pipe_hnd
, mem_ctx
,
371 rpccli_samr_Close(pipe_hnd
, mem_ctx
, &user_pol
);
372 TALLOC_FREE(pipe_hnd
); /* Done with this pipe */
374 /* Now check the whole process from top-to-bottom */
376 pipe_hnd
= cli_rpc_pipe_open_noauth(cli
, PI_NETLOGON
, &result
);
378 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
379 nt_errstr(result
) ));
383 result
= rpccli_netlogon_setup_creds(pipe_hnd
,
384 cli
->desthost
, /* server name */
386 global_myname(), /* client name */
387 global_myname(), /* machine account name */
392 if (!NT_STATUS_IS_OK(result
)) {
393 DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
396 if ( NT_STATUS_EQUAL(result
, NT_STATUS_ACCESS_DENIED
) &&
397 (sec_channel_type
== SEC_CHAN_BDC
) ) {
398 d_fprintf(stderr
, "Please make sure that no computer account\n"
399 "named like this machine (%s) exists in the domain\n",
406 /* We can only check the schannel connection if the client is allowed
407 to do this and the server supports it. If not, just assume success
408 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
409 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
411 if (lp_client_schannel() && (neg_flags
& NETLOGON_NEG_SCHANNEL
)) {
412 struct rpc_pipe_client
*netlogon_schannel_pipe
=
413 cli_rpc_pipe_open_schannel_with_key(cli
,
415 PIPE_AUTH_LEVEL_PRIVACY
,
420 if (!NT_STATUS_IS_OK(result
)) {
421 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
424 if ( NT_STATUS_EQUAL(result
, NT_STATUS_ACCESS_DENIED
) &&
425 (sec_channel_type
== SEC_CHAN_BDC
) ) {
426 d_fprintf(stderr
, "Please make sure that no computer account\n"
427 "named like this machine (%s) exists in the domain\n",
433 TALLOC_FREE(netlogon_schannel_pipe
);
436 TALLOC_FREE(pipe_hnd
);
438 /* Now store the secret in the secrets database */
440 strupper_m(CONST_DISCARD(char *, domain
));
442 if (!secrets_store_domain_sid(domain
, domain_sid
)) {
443 DEBUG(0, ("error storing domain sid for %s\n", domain
));
447 if (!secrets_store_machine_password(clear_trust_password
, domain
, sec_channel_type
)) {
448 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain
));
451 /* double-check, connection from scratch */
452 result
= net_rpc_join_ok(c
, domain
, cli
->desthost
, &cli
->dest_ss
);
453 retval
= NT_STATUS_IS_OK(result
) ? 0 : -1;
457 /* Display success or failure */
461 fprintf(stderr
,"Unable to join domain %s.\n",domain
);
463 printf("Joined domain %s.\n",domain
);
469 SAFE_FREE(clear_trust_password
);
475 * check that a join is OK
477 * @return A shell status integer (0 for success)
480 int net_rpc_testjoin(struct net_context
*c
, int argc
, const char **argv
)
482 char *domain
= smb_xstrdup(c
->opt_target_workgroup
);
485 if (c
->display_usage
) {
488 " Test if a join is OK\n");
492 /* Display success or failure */
493 nt_status
= net_rpc_join_ok(c
, domain
, NULL
, NULL
);
494 if (!NT_STATUS_IS_OK(nt_status
)) {
495 fprintf(stderr
,"Join to domain '%s' is not valid: %s\n",
496 domain
, nt_errstr(nt_status
));
501 printf("Join to '%s' is OK\n",domain
);