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 result = cli_rpc_pipe_open_noauth(cli, &ndr_table_lsarpc.syntax_id,
204 if (!NT_STATUS_IS_OK(result)) {
205 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
206 nt_errstr(result) ));
211 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd, mem_ctx, true,
212 SEC_RIGHTS_MAXIMUM_ALLOWED,
214 "error opening lsa policy handle");
216 CHECK_RPC_ERR(rpccli_lsa_QueryInfoPolicy(pipe_hnd, mem_ctx,
218 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
220 "error querying info policy");
222 domain = info->account_domain.name.string;
223 domain_sid = info->account_domain.sid;
225 rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
226 TALLOC_FREE(pipe_hnd); /* Done with this pipe */
228 /* Bail out if domain didn't get set. */
230 DEBUG(0, ("Could not get domain name.\n"));
234 /* Create domain user */
235 result = cli_rpc_pipe_open_noauth(cli, &ndr_table_samr.syntax_id,
237 if (!NT_STATUS_IS_OK(result)) {
238 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
239 nt_errstr(result) ));
243 CHECK_RPC_ERR(rpccli_samr_Connect2(pipe_hnd, mem_ctx,
245 SEC_RIGHTS_MAXIMUM_ALLOWED,
247 "could not connect to SAM database");
250 CHECK_RPC_ERR(rpccli_samr_OpenDomain(pipe_hnd, mem_ctx,
252 SEC_RIGHTS_MAXIMUM_ALLOWED,
255 "could not open domain");
257 /* Create domain user */
258 if ((acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname())) == NULL) {
259 result = NT_STATUS_NO_MEMORY;
262 strlower_m(acct_name);
264 init_lsa_String(&lsa_acct_name, acct_name);
266 acct_flags = SEC_GENERIC_READ | SEC_GENERIC_WRITE | SEC_GENERIC_EXECUTE |
267 SEC_STD_WRITE_DAC | SEC_STD_DELETE |
268 SAMR_USER_ACCESS_SET_PASSWORD |
269 SAMR_USER_ACCESS_GET_ATTRIBUTES |
270 SAMR_USER_ACCESS_SET_ATTRIBUTES;
272 DEBUG(10, ("Creating account with flags: %d\n",acct_flags));
274 result = rpccli_samr_CreateUser2(pipe_hnd, mem_ctx,
283 if (!NT_STATUS_IS_OK(result) &&
284 !NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
285 d_fprintf(stderr, "Creation of workstation account failed\n");
287 /* If NT_STATUS_ACCESS_DENIED then we have a valid
288 username/password combo but the user does not have
289 administrator access. */
291 if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
292 d_fprintf(stderr, "User specified does not have administrator privileges\n");
297 /* We *must* do this.... don't ask... */
299 if (NT_STATUS_IS_OK(result)) {
300 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
303 CHECK_RPC_ERR_DEBUG(rpccli_samr_LookupNames(pipe_hnd, mem_ctx,
309 ("error looking up rid for user %s: %s\n",
310 acct_name, nt_errstr(result)));
312 if (name_types.ids[0] != SID_NAME_USER) {
313 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types.ids[0]));
317 user_rid = user_rids.ids[0];
319 /* Open handle on user */
322 rpccli_samr_OpenUser(pipe_hnd, mem_ctx,
324 SEC_RIGHTS_MAXIMUM_ALLOWED,
327 ("could not re-open existing user %s: %s\n",
328 acct_name, nt_errstr(result)));
330 /* Create a random machine account password */
334 str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
335 clear_trust_password = SMB_STRDUP(str);
336 E_md4hash(clear_trust_password, md4_trust_password);
339 encode_pw_buffer(pwbuf, clear_trust_password, STR_UNICODE);
341 /* Set password on machine account */
343 init_samr_user_info24(&set_info.info24, pwbuf, 24);
345 SamOEMhashBlob(set_info.info24.password.data, 516,
346 &cli->user_session_key);
348 CHECK_RPC_ERR(rpccli_samr_SetUserInfo2(pipe_hnd, mem_ctx,
352 "error setting trust account password");
354 /* Why do we have to try to (re-)set the ACB to be the same as what
355 we passed in the samr_create_dom_user() call? When a NT
356 workstation is joined to a domain by an administrator the
357 acb_info is set to 0x80. For a normal user with "Add
358 workstations to the domain" rights the acb_info is 0x84. I'm
359 not sure whether it is supposed to make a difference or not. NT
360 seems to cope with either value so don't bomb out if the set
361 userinfo2 level 0x10 fails. -tpot */
363 set_info.info16.acct_flags = acb_info;
365 /* Ignoring the return value is necessary for joining a domain
366 as a normal user with "Add workstation to domain" privilege. */
368 result = rpccli_samr_SetUserInfo(pipe_hnd, mem_ctx,
373 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
374 TALLOC_FREE(pipe_hnd); /* Done with this pipe */
376 /* Now check the whole process from top-to-bottom */
378 result = cli_rpc_pipe_open_noauth(cli, &ndr_table_netlogon.syntax_id,
380 if (!NT_STATUS_IS_OK(result)) {
381 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
382 nt_errstr(result) ));
386 result = rpccli_netlogon_setup_creds(pipe_hnd,
387 cli->desthost, /* server name */
389 global_myname(), /* client name */
390 global_myname(), /* machine account name */
395 if (!NT_STATUS_IS_OK(result)) {
396 DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
399 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
400 (sec_channel_type == SEC_CHAN_BDC) ) {
401 d_fprintf(stderr, "Please make sure that no computer account\n"
402 "named like this machine (%s) exists in the domain\n",
409 /* We can only check the schannel connection if the client is allowed
410 to do this and the server supports it. If not, just assume success
411 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
412 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
414 if (lp_client_schannel() && (neg_flags & NETLOGON_NEG_SCHANNEL)) {
415 struct rpc_pipe_client *netlogon_schannel_pipe =
416 cli_rpc_pipe_open_schannel_with_key(cli,
418 PIPE_AUTH_LEVEL_PRIVACY,
423 if (!NT_STATUS_IS_OK(result)) {
424 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
427 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
428 (sec_channel_type == SEC_CHAN_BDC) ) {
429 d_fprintf(stderr, "Please make sure that no computer account\n"
430 "named like this machine (%s) exists in the domain\n",
436 TALLOC_FREE(netlogon_schannel_pipe);
439 TALLOC_FREE(pipe_hnd);
441 /* Now store the secret in the secrets database */
443 strupper_m(CONST_DISCARD(char *, domain));
445 if (!secrets_store_domain_sid(domain, domain_sid)) {
446 DEBUG(0, ("error storing domain sid for %s\n", domain));
450 if (!secrets_store_machine_password(clear_trust_password, domain, sec_channel_type)) {
451 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
454 /* double-check, connection from scratch */
455 result = net_rpc_join_ok(c, domain, cli->desthost, &cli->dest_ss);
456 retval = NT_STATUS_IS_OK(result) ? 0 : -1;
460 /* Display success or failure */
464 fprintf(stderr,"Unable to join domain %s.\n",domain);
466 printf("Joined domain %s.\n",domain);
472 SAFE_FREE(clear_trust_password);
478 * check that a join is OK
480 * @return A shell status integer (0 for success)
483 int net_rpc_testjoin(struct net_context *c, int argc, const char **argv)
485 char *domain = smb_xstrdup(c->opt_target_workgroup);
488 if (c->display_usage) {
491 " Test if a join is OK\n");
495 /* Display success or failure */
496 nt_status = net_rpc_join_ok(c, domain, NULL, NULL);
497 if (!NT_STATUS_IS_OK(nt_status)) {
498 fprintf(stderr,"Join to domain '%s' is not valid: %s\n",
499 domain, nt_errstr(nt_status));
504 printf("Join to '%s' is OK\n",domain);