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,
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, ip, 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];
159 uint32 num_rids, *name_types, *user_rids;
160 uint32 flags = 0x3e8;
162 const char *const_acct_name;
164 /* check what type of join */
166 sec_channel_type = get_sec_channel_type(argv[0]);
168 sec_channel_type = get_sec_channel_type(NULL);
171 switch (sec_channel_type) {
173 acb_info = ACB_WSTRUST;
176 acb_info = ACB_SVRTRUST;
179 case SEC_CHAN_DOMAIN:
180 acb_info = ACB_DOMTRUST;
185 /* Make authenticated connection to remote machine */
187 result = net_make_ipc_connection(NET_FLAGS_PDC, &cli);
188 if (!NT_STATUS_IS_OK(result)) {
192 if (!(mem_ctx = talloc_init("net_rpc_join_newstyle"))) {
193 DEBUG(0, ("Could not initialise talloc context\n"));
197 /* Fetch domain sid */
199 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &result);
201 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
202 nt_errstr(result) ));
207 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd, mem_ctx, True,
208 SEC_RIGHTS_MAXIMUM_ALLOWED,
210 "error opening lsa policy handle");
212 CHECK_RPC_ERR(rpccli_lsa_query_info_policy(pipe_hnd, mem_ctx, &lsa_pol,
213 5, &domain, &domain_sid),
214 "error querying info policy");
216 rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
217 cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
219 /* Bail out if domain didn't get set. */
221 DEBUG(0, ("Could not get domain name.\n"));
225 /* Create domain user */
226 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &result);
228 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
229 nt_errstr(result) ));
233 CHECK_RPC_ERR(rpccli_samr_connect(pipe_hnd, mem_ctx,
234 SEC_RIGHTS_MAXIMUM_ALLOWED,
236 "could not connect to SAM database");
239 CHECK_RPC_ERR(rpccli_samr_open_domain(pipe_hnd, mem_ctx, &sam_pol,
240 SEC_RIGHTS_MAXIMUM_ALLOWED,
241 domain_sid, &domain_pol),
242 "could not open domain");
244 /* Create domain user */
245 if ((acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname())) == NULL) {
246 result = NT_STATUS_NO_MEMORY;
249 strlower_m(acct_name);
250 const_acct_name = acct_name;
252 result = rpccli_samr_create_dom_user(pipe_hnd, mem_ctx, &domain_pol,
254 0xe005000b, &user_pol,
257 if (!NT_STATUS_IS_OK(result) &&
258 !NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
259 d_fprintf(stderr, "Creation of workstation account failed\n");
261 /* If NT_STATUS_ACCESS_DENIED then we have a valid
262 username/password combo but the user does not have
263 administrator access. */
265 if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
266 d_fprintf(stderr, "User specified does not have administrator privileges\n");
271 /* We *must* do this.... don't ask... */
273 if (NT_STATUS_IS_OK(result)) {
274 rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
277 CHECK_RPC_ERR_DEBUG(rpccli_samr_lookup_names(pipe_hnd, mem_ctx,
281 &user_rids, &name_types),
282 ("error looking up rid for user %s: %s\n",
283 acct_name, nt_errstr(result)));
285 if (name_types[0] != SID_NAME_USER) {
286 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types[0]));
290 user_rid = user_rids[0];
292 /* Open handle on user */
295 rpccli_samr_open_user(pipe_hnd, mem_ctx, &domain_pol,
296 SEC_RIGHTS_MAXIMUM_ALLOWED,
297 user_rid, &user_pol),
298 ("could not re-open existing user %s: %s\n",
299 acct_name, nt_errstr(result)));
301 /* Create a random machine account password */
305 str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
306 clear_trust_password = SMB_STRDUP(str);
307 E_md4hash(clear_trust_password, md4_trust_password);
310 encode_pw_buffer(pwbuf, clear_trust_password, STR_UNICODE);
312 /* Set password on machine account */
317 init_sam_user_info24(&p24, (char *)pwbuf,24);
319 ctr.switch_value = 24;
320 ctr.info.id24 = &p24;
322 CHECK_RPC_ERR(rpccli_samr_set_userinfo(pipe_hnd, mem_ctx, &user_pol, 24,
323 &cli->user_session_key, &ctr),
324 "error setting trust account password");
326 /* Why do we have to try to (re-)set the ACB to be the same as what
327 we passed in the samr_create_dom_user() call? When a NT
328 workstation is joined to a domain by an administrator the
329 acb_info is set to 0x80. For a normal user with "Add
330 workstations to the domain" rights the acb_info is 0x84. I'm
331 not sure whether it is supposed to make a difference or not. NT
332 seems to cope with either value so don't bomb out if the set
333 userinfo2 level 0x10 fails. -tpot */
336 ctr.switch_value = 16;
337 ctr.info.id16 = &p16;
339 init_sam_user_info16(&p16, acb_info);
341 /* Ignoring the return value is necessary for joining a domain
342 as a normal user with "Add workstation to domain" privilege. */
344 result = rpccli_samr_set_userinfo2(pipe_hnd, mem_ctx, &user_pol, 16,
345 &cli->user_session_key, &ctr);
347 rpccli_samr_close(pipe_hnd, mem_ctx, &user_pol);
348 cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
350 /* Now check the whole process from top-to-bottom */
352 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_NETLOGON, &result);
354 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
355 nt_errstr(result) ));
359 result = rpccli_netlogon_setup_creds(pipe_hnd,
360 cli->desthost, /* server name */
362 global_myname(), /* client name */
363 global_myname(), /* machine account name */
368 if (!NT_STATUS_IS_OK(result)) {
369 DEBUG(0, ("Error in domain join verification (credential setup failed): %s\n\n",
372 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
373 (sec_channel_type == SEC_CHAN_BDC) ) {
374 d_fprintf(stderr, "Please make sure that no computer account\n"
375 "named like this machine (%s) exists in the domain\n",
382 /* We can only check the schannel connection if the client is allowed
383 to do this and the server supports it. If not, just assume success
384 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
385 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
387 if (lp_client_schannel() && (neg_flags & NETLOGON_NEG_SCHANNEL)) {
388 struct rpc_pipe_client *netlogon_schannel_pipe =
389 cli_rpc_pipe_open_schannel_with_key(cli,
391 PIPE_AUTH_LEVEL_PRIVACY,
396 if (!NT_STATUS_IS_OK(result)) {
397 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
400 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
401 (sec_channel_type == SEC_CHAN_BDC) ) {
402 d_fprintf(stderr, "Please make sure that no computer account\n"
403 "named like this machine (%s) exists in the domain\n",
409 cli_rpc_pipe_close(netlogon_schannel_pipe);
412 cli_rpc_pipe_close(pipe_hnd);
414 /* Now store the secret in the secrets database */
418 if (!secrets_store_domain_sid(domain, domain_sid)) {
419 DEBUG(0, ("error storing domain sid for %s\n", domain));
423 if (!secrets_store_machine_password(clear_trust_password, domain, sec_channel_type)) {
424 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
427 /* double-check, connection from scratch */
428 result = net_rpc_join_ok(domain, cli->desthost, &cli->dest_ip);
429 retval = NT_STATUS_IS_OK(result) ? 0 : -1;
433 /* Display success or failure */
437 fprintf(stderr,"Unable to join domain %s.\n",domain);
439 printf("Joined domain %s.\n",domain);
445 SAFE_FREE(clear_trust_password);
451 * check that a join is OK
453 * @return A shell status integer (0 for success)
456 int net_rpc_testjoin(int argc, const char **argv)
458 char *domain = smb_xstrdup(opt_target_workgroup);
461 /* Display success or failure */
462 nt_status = net_rpc_join_ok(domain, NULL, NULL);
463 if (!NT_STATUS_IS_OK(nt_status)) {
464 fprintf(stderr,"Join to domain '%s' is not valid: %s\n",
465 nt_errstr(nt_status), domain);
470 printf("Join to '%s' is OK\n",domain);