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
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "utils/net.h"
23 /* Macro for checking RPC error codes to make things more readable */
25 #define CHECK_RPC_ERR(rpc, msg) \
26 if (!NT_STATUS_IS_OK(result = rpc)) { \
27 DEBUG(0, (msg ": %s\n", nt_errstr(result))); \
31 #define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
32 if (!NT_STATUS_IS_OK(result = rpc)) { \
33 DEBUG(0, debug_args); \
38 * confirm that a domain join is still valid
40 * @return A shell status integer (0 for success)
43 NTSTATUS net_rpc_join_ok(const char *domain, const char *server,
44 struct sockaddr_storage *pss)
46 enum security_types sec;
47 unsigned int conn_flags = NET_FLAGS_PDC;
48 uint32 neg_flags = NETLOGON_NEG_SELECT_AUTH2_FLAGS|NETLOGON_NEG_SCHANNEL;
49 struct cli_state *cli = NULL;
50 struct rpc_pipe_client *pipe_hnd = NULL;
51 struct rpc_pipe_client *netlogon_pipe = NULL;
52 NTSTATUS ntret = NT_STATUS_UNSUCCESSFUL;
54 sec = (enum security_types)lp_security();
57 /* Connect to IPC$ using machine account's credentials. We don't use anonymous
58 connection here, as it may be denied by server's local policy. */
59 net_use_machine_account();
62 /* some servers (e.g. WinNT) don't accept machine-authenticated
64 conn_flags |= NET_FLAGS_ANONYMOUS;
67 /* Connect to remote machine */
68 ntret = net_make_ipc_connection_ex(domain, server, pss, conn_flags, &cli);
69 if (!NT_STATUS_IS_OK(ntret)) {
73 /* Setup the creds as though we're going to do schannel... */
74 netlogon_pipe = get_schannel_session_key(cli, domain, &neg_flags, &ntret);
76 /* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
77 to negotiate schannel, but the creds were set up ok. That'll have to do. */
80 if (NT_STATUS_EQUAL(ntret, NT_STATUS_INVALID_NETWORK_RESPONSE)) {
84 DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
85 "key from server %s for domain %s. Error was %s\n",
86 cli->desthost, domain, nt_errstr(ntret) ));
92 /* Only do the rest of the schannel test if the client is allowed to do this. */
93 if (!lp_client_schannel()) {
99 pipe_hnd = cli_rpc_pipe_open_schannel_with_key(cli, PI_NETLOGON,
100 PIPE_AUTH_LEVEL_PRIVACY,
101 domain, netlogon_pipe->dc, &ntret);
104 DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
105 "on netlogon pipe to server %s for domain %s. Error was %s\n",
106 cli->desthost, domain, nt_errstr(ntret) ));
108 * Note: here, we have:
109 * (pipe_hnd != NULL) if and only if NT_STATUS_IS_OK(ntret)
118 * Join a domain using the administrator username and password
120 * @param argc Standard main() style argc
121 * @param argc Standard main() style argv. Initial components are already
122 * stripped. Currently not used.
123 * @return A shell status integer (0 for success)
127 int net_rpc_join_newstyle(int argc, const char **argv)
130 /* libsmb variables */
132 struct cli_state *cli;
134 uint32 acb_info = ACB_WSTRUST;
135 uint32 neg_flags = NETLOGON_NEG_SELECT_AUTH2_FLAGS|(lp_client_schannel() ? NETLOGON_NEG_SCHANNEL : 0);
136 uint32 sec_channel_type;
137 struct rpc_pipe_client *pipe_hnd = NULL;
141 POLICY_HND lsa_pol, sam_pol, domain_pol, user_pol;
147 char *clear_trust_password = NULL;
149 SAM_USERINFO_CTR ctr;
150 SAM_USER_INFO_24 p24;
151 SAM_USER_INFO_16 p16;
152 uchar md4_trust_password[16];
158 const char *domain = NULL;
159 uint32 num_rids, *name_types, *user_rids;
160 uint32 flags = 0x3e8;
162 const char *const_acct_name;
165 /* check what type of join */
167 sec_channel_type = get_sec_channel_type(argv[0]);
169 sec_channel_type = get_sec_channel_type(NULL);
172 switch (sec_channel_type) {
174 acb_info = ACB_WSTRUST;
177 acb_info = ACB_SVRTRUST;
180 case SEC_CHAN_DOMAIN:
181 acb_info = ACB_DOMTRUST;
186 /* Make authenticated connection to remote machine */
188 result = net_make_ipc_connection(NET_FLAGS_PDC, &cli);
189 if (!NT_STATUS_IS_OK(result)) {
193 if (!(mem_ctx = talloc_init("net_rpc_join_newstyle"))) {
194 DEBUG(0, ("Could not initialise talloc context\n"));
198 /* Fetch domain sid */
200 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &result);
202 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
203 nt_errstr(result) ));
208 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd, mem_ctx, True,
209 SEC_RIGHTS_MAXIMUM_ALLOWED,
211 "error opening lsa policy handle");
213 CHECK_RPC_ERR(rpccli_lsa_query_info_policy(pipe_hnd, mem_ctx, &lsa_pol,
214 5, &domain, &domain_sid),
215 "error querying info policy");
217 rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
218 cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
220 /* Bail out if domain didn't get set. */
222 DEBUG(0, ("Could not get domain name.\n"));
226 /* Create domain user */
227 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &result);
229 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
230 nt_errstr(result) ));
234 CHECK_RPC_ERR(rpccli_samr_connect(pipe_hnd, mem_ctx,
235 SEC_RIGHTS_MAXIMUM_ALLOWED,
237 "could not connect to SAM database");
240 CHECK_RPC_ERR(rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
241 SEC_RIGHTS_MAXIMUM_ALLOWED,
242 domain_sid, &domain_pol),
243 "could not open domain");
245 /* Create domain user */
246 if ((acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname())) == NULL) {
247 result = NT_STATUS_NO_MEMORY;
250 strlower_m(acct_name);
251 const_acct_name = acct_name;
253 acct_flags = SEC_GENERIC_READ | SEC_GENERIC_WRITE | SEC_GENERIC_EXECUTE |
254 SEC_STD_WRITE_DAC | SEC_STD_DELETE |
255 SAMR_USER_ACCESS_SET_PASSWORD |
256 SAMR_USER_ACCESS_GET_ATTRIBUTES |
257 SAMR_USER_ACCESS_SET_ATTRIBUTES;
259 DEBUG(10, ("Creating account with flags: %d\n",acct_flags));
261 result = rpccli_samr_create_dom_user(pipe_hnd, mem_ctx, &domain_pol,
263 acct_flags, &user_pol,
266 if (!NT_STATUS_IS_OK(result) &&
267 !NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
268 d_fprintf(stderr, "Creation of workstation account failed\n");
270 /* If NT_STATUS_ACCESS_DENIED then we have a valid
271 username/password combo but the user does not have
272 administrator access. */
274 if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
275 d_fprintf(stderr, "User specified does not have administrator privileges\n");
280 /* We *must* do this.... don't ask... */
282 if (NT_STATUS_IS_OK(result)) {
283 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
286 CHECK_RPC_ERR_DEBUG(rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
290 &user_rids, &name_types),
291 ("error looking up rid for user %s: %s\n",
292 acct_name, nt_errstr(result)));
294 if (name_types[0] != SID_NAME_USER) {
295 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types[0]));
299 user_rid = user_rids[0];
301 /* Open handle on user */
304 rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
305 SEC_RIGHTS_MAXIMUM_ALLOWED,
306 user_rid, &user_pol),
307 ("could not re-open existing user %s: %s\n",
308 acct_name, nt_errstr(result)));
310 /* Create a random machine account password */
314 str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
315 clear_trust_password = SMB_STRDUP(str);
316 E_md4hash(clear_trust_password, md4_trust_password);
319 encode_pw_buffer(pwbuf, clear_trust_password, STR_UNICODE);
321 /* Set password on machine account */
326 init_sam_user_info24(&p24, (char *)pwbuf,24);
328 ctr.switch_value = 24;
329 ctr.info.id24 = &p24;
331 CHECK_RPC_ERR(rpccli_samr_set_userinfo(pipe_hnd, mem_ctx, &user_pol, 24,
332 &cli->user_session_key, &ctr),
333 "error setting trust account password");
335 /* Why do we have to try to (re-)set the ACB to be the same as what
336 we passed in the samr_create_dom_user() call? When a NT
337 workstation is joined to a domain by an administrator the
338 acb_info is set to 0x80. For a normal user with "Add
339 workstations to the domain" rights the acb_info is 0x84. I'm
340 not sure whether it is supposed to make a difference or not. NT
341 seems to cope with either value so don't bomb out if the set
342 userinfo2 level 0x10 fails. -tpot */
345 ctr.switch_value = 16;
346 ctr.info.id16 = &p16;
348 init_sam_user_info16(&p16, acb_info);
350 /* Ignoring the return value is necessary for joining a domain
351 as a normal user with "Add workstation to domain" privilege. */
353 result = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16,
354 &cli->user_session_key, &ctr);
356 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
357 cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
359 /* Now check the whole process from top-to-bottom */
361 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_NETLOGON, &result);
363 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
364 nt_errstr(result) ));
368 result = rpccli_netlogon_setup_creds(pipe_hnd,
369 cli->desthost, /* server name */
371 global_myname(), /* client name */
372 global_myname(), /* machine account name */
377 if (!NT_STATUS_IS_OK(result)) {
378 DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
381 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
382 (sec_channel_type == SEC_CHAN_BDC) ) {
383 d_fprintf(stderr, "Please make sure that no computer account\n"
384 "named like this machine (%s) exists in the domain\n",
391 /* We can only check the schannel connection if the client is allowed
392 to do this and the server supports it. If not, just assume success
393 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
394 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
396 if (lp_client_schannel() && (neg_flags & NETLOGON_NEG_SCHANNEL)) {
397 struct rpc_pipe_client *netlogon_schannel_pipe =
398 cli_rpc_pipe_open_schannel_with_key(cli,
400 PIPE_AUTH_LEVEL_PRIVACY,
405 if (!NT_STATUS_IS_OK(result)) {
406 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
409 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
410 (sec_channel_type == SEC_CHAN_BDC) ) {
411 d_fprintf(stderr, "Please make sure that no computer account\n"
412 "named like this machine (%s) exists in the domain\n",
418 cli_rpc_pipe_close(netlogon_schannel_pipe);
421 cli_rpc_pipe_close(pipe_hnd);
423 /* Now store the secret in the secrets database */
425 strupper_m(CONST_DISCARD(char *, domain));
427 if (!secrets_store_domain_sid(domain, domain_sid)) {
428 DEBUG(0, ("error storing domain sid for %s\n", domain));
432 if (!secrets_store_machine_password(clear_trust_password, domain, sec_channel_type)) {
433 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
436 /* double-check, connection from scratch */
437 result = net_rpc_join_ok(domain, cli->desthost, &cli->dest_ss);
438 retval = NT_STATUS_IS_OK(result) ? 0 : -1;
442 /* Display success or failure */
446 fprintf(stderr,"Unable to join domain %s.\n",domain);
448 printf("Joined domain %s.\n",domain);
454 SAFE_FREE(clear_trust_password);
460 * check that a join is OK
462 * @return A shell status integer (0 for success)
465 int net_rpc_testjoin(int argc, const char **argv)
467 char *domain = smb_xstrdup(opt_target_workgroup);
470 /* Display success or failure */
471 nt_status = net_rpc_join_ok(domain, NULL, NULL);
472 if (!NT_STATUS_IS_OK(nt_status)) {
473 fprintf(stderr,"Join to domain '%s' is not valid: %s\n",
474 nt_errstr(nt_status), domain);
479 printf("Join to '%s' is OK\n",domain);