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); \
37 static void init_lsa_String(struct lsa_String *name, const char *s)
44 * confirm that a domain join is still valid
46 * @return A shell status integer (0 for success)
49 NTSTATUS net_rpc_join_ok(const char *domain, const char *server,
50 struct sockaddr_storage *pss)
52 enum security_types sec;
53 unsigned int conn_flags = NET_FLAGS_PDC;
54 uint32 neg_flags = NETLOGON_NEG_SELECT_AUTH2_FLAGS|NETLOGON_NEG_SCHANNEL;
55 struct cli_state *cli = NULL;
56 struct rpc_pipe_client *pipe_hnd = NULL;
57 struct rpc_pipe_client *netlogon_pipe = NULL;
58 NTSTATUS ntret = NT_STATUS_UNSUCCESSFUL;
60 sec = (enum security_types)lp_security();
63 /* Connect to IPC$ using machine account's credentials. We don't use anonymous
64 connection here, as it may be denied by server's local policy. */
65 net_use_machine_account();
68 /* some servers (e.g. WinNT) don't accept machine-authenticated
70 conn_flags |= NET_FLAGS_ANONYMOUS;
73 /* Connect to remote machine */
74 ntret = net_make_ipc_connection_ex(domain, server, pss, conn_flags, &cli);
75 if (!NT_STATUS_IS_OK(ntret)) {
79 /* Setup the creds as though we're going to do schannel... */
80 netlogon_pipe = get_schannel_session_key(cli, domain, &neg_flags, &ntret);
82 /* We return NT_STATUS_INVALID_NETWORK_RESPONSE if the server is refusing
83 to negotiate schannel, but the creds were set up ok. That'll have to do. */
86 if (NT_STATUS_EQUAL(ntret, NT_STATUS_INVALID_NETWORK_RESPONSE)) {
90 DEBUG(0,("net_rpc_join_ok: failed to get schannel session "
91 "key from server %s for domain %s. Error was %s\n",
92 cli->desthost, domain, nt_errstr(ntret) ));
98 /* Only do the rest of the schannel test if the client is allowed to do this. */
99 if (!lp_client_schannel()) {
105 pipe_hnd = cli_rpc_pipe_open_schannel_with_key(cli, PI_NETLOGON,
106 PIPE_AUTH_LEVEL_PRIVACY,
107 domain, netlogon_pipe->dc, &ntret);
110 DEBUG(0,("net_rpc_join_ok: failed to open schannel session "
111 "on netlogon pipe to server %s for domain %s. Error was %s\n",
112 cli->desthost, domain, nt_errstr(ntret) ));
114 * Note: here, we have:
115 * (pipe_hnd != NULL) if and only if NT_STATUS_IS_OK(ntret)
124 * Join a domain using the administrator username and password
126 * @param argc Standard main() style argc
127 * @param argc Standard main() style argv. Initial components are already
128 * stripped. Currently not used.
129 * @return A shell status integer (0 for success)
133 int net_rpc_join_newstyle(int argc, const char **argv)
136 /* libsmb variables */
138 struct cli_state *cli;
140 uint32 acb_info = ACB_WSTRUST;
141 uint32 neg_flags = NETLOGON_NEG_SELECT_AUTH2_FLAGS|(lp_client_schannel() ? NETLOGON_NEG_SCHANNEL : 0);
142 uint32 sec_channel_type;
143 struct rpc_pipe_client *pipe_hnd = NULL;
147 POLICY_HND lsa_pol, sam_pol, domain_pol, user_pol;
153 char *clear_trust_password = NULL;
155 uchar md4_trust_password[16];
156 union samr_UserInfo set_info;
162 const char *domain = NULL;
164 struct lsa_String lsa_acct_name;
166 uint32_t access_granted = 0;
167 union lsa_PolicyInformation *info = NULL;
168 struct samr_Ids user_rids;
169 struct samr_Ids name_types;
171 /* check what type of join */
173 sec_channel_type = get_sec_channel_type(argv[0]);
175 sec_channel_type = get_sec_channel_type(NULL);
178 switch (sec_channel_type) {
180 acb_info = ACB_WSTRUST;
183 acb_info = ACB_SVRTRUST;
186 case SEC_CHAN_DOMAIN:
187 acb_info = ACB_DOMTRUST;
192 /* Make authenticated connection to remote machine */
194 result = net_make_ipc_connection(NET_FLAGS_PDC, &cli);
195 if (!NT_STATUS_IS_OK(result)) {
199 if (!(mem_ctx = talloc_init("net_rpc_join_newstyle"))) {
200 DEBUG(0, ("Could not initialise talloc context\n"));
204 /* Fetch domain sid */
206 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &result);
208 DEBUG(0, ("Error connecting to LSA pipe. Error was %s\n",
209 nt_errstr(result) ));
214 CHECK_RPC_ERR(rpccli_lsa_open_policy(pipe_hnd, mem_ctx, True,
215 SEC_RIGHTS_MAXIMUM_ALLOWED,
217 "error opening lsa policy handle");
219 CHECK_RPC_ERR(rpccli_lsa_QueryInfoPolicy(pipe_hnd, mem_ctx,
221 LSA_POLICY_INFO_ACCOUNT_DOMAIN,
223 "error querying info policy");
225 domain = info->account_domain.name.string;
226 domain_sid = info->account_domain.sid;
228 rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
229 cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
231 /* Bail out if domain didn't get set. */
233 DEBUG(0, ("Could not get domain name.\n"));
237 /* Create domain user */
238 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &result);
240 DEBUG(0, ("Error connecting to SAM pipe. Error was %s\n",
241 nt_errstr(result) ));
245 CHECK_RPC_ERR(rpccli_samr_Connect2(pipe_hnd, mem_ctx,
246 pipe_hnd->cli->desthost,
247 SEC_RIGHTS_MAXIMUM_ALLOWED,
249 "could not connect to SAM database");
252 CHECK_RPC_ERR(rpccli_samr_OpenDomain(pipe_hnd, mem_ctx,
254 SEC_RIGHTS_MAXIMUM_ALLOWED,
257 "could not open domain");
259 /* Create domain user */
260 if ((acct_name = talloc_asprintf(mem_ctx, "%s$", global_myname())) == NULL) {
261 result = NT_STATUS_NO_MEMORY;
264 strlower_m(acct_name);
266 init_lsa_String(&lsa_acct_name, acct_name);
268 acct_flags = SEC_GENERIC_READ | SEC_GENERIC_WRITE | SEC_GENERIC_EXECUTE |
269 SEC_STD_WRITE_DAC | SEC_STD_DELETE |
270 SAMR_USER_ACCESS_SET_PASSWORD |
271 SAMR_USER_ACCESS_GET_ATTRIBUTES |
272 SAMR_USER_ACCESS_SET_ATTRIBUTES;
274 DEBUG(10, ("Creating account with flags: %d\n",acct_flags));
276 result = rpccli_samr_CreateUser2(pipe_hnd, mem_ctx,
285 if (!NT_STATUS_IS_OK(result) &&
286 !NT_STATUS_EQUAL(result, NT_STATUS_USER_EXISTS)) {
287 d_fprintf(stderr, "Creation of workstation account failed\n");
289 /* If NT_STATUS_ACCESS_DENIED then we have a valid
290 username/password combo but the user does not have
291 administrator access. */
293 if (NT_STATUS_V(result) == NT_STATUS_V(NT_STATUS_ACCESS_DENIED))
294 d_fprintf(stderr, "User specified does not have administrator privileges\n");
299 /* We *must* do this.... don't ask... */
301 if (NT_STATUS_IS_OK(result)) {
302 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
305 CHECK_RPC_ERR_DEBUG(rpccli_samr_LookupNames(pipe_hnd, mem_ctx,
311 ("error looking up rid for user %s: %s\n",
312 acct_name, nt_errstr(result)));
314 if (name_types.ids[0] != SID_NAME_USER) {
315 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name, name_types.ids[0]));
319 user_rid = user_rids.ids[0];
321 /* Open handle on user */
324 rpccli_samr_OpenUser(pipe_hnd, mem_ctx,
326 SEC_RIGHTS_MAXIMUM_ALLOWED,
329 ("could not re-open existing user %s: %s\n",
330 acct_name, nt_errstr(result)));
332 /* Create a random machine account password */
336 str = generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH);
337 clear_trust_password = SMB_STRDUP(str);
338 E_md4hash(clear_trust_password, md4_trust_password);
341 encode_pw_buffer(pwbuf, clear_trust_password, STR_UNICODE);
343 /* Set password on machine account */
345 init_samr_user_info24(&set_info.info24, pwbuf, 24);
347 SamOEMhashBlob(set_info.info24.password.data, 516,
348 &cli->user_session_key);
350 CHECK_RPC_ERR(rpccli_samr_SetUserInfo2(pipe_hnd, mem_ctx,
354 "error setting trust account password");
356 /* Why do we have to try to (re-)set the ACB to be the same as what
357 we passed in the samr_create_dom_user() call? When a NT
358 workstation is joined to a domain by an administrator the
359 acb_info is set to 0x80. For a normal user with "Add
360 workstations to the domain" rights the acb_info is 0x84. I'm
361 not sure whether it is supposed to make a difference or not. NT
362 seems to cope with either value so don't bomb out if the set
363 userinfo2 level 0x10 fails. -tpot */
365 set_info.info16.acct_flags = acb_info;
367 /* Ignoring the return value is necessary for joining a domain
368 as a normal user with "Add workstation to domain" privilege. */
370 result = rpccli_samr_SetUserInfo(pipe_hnd, mem_ctx,
375 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
376 cli_rpc_pipe_close(pipe_hnd); /* Done with this pipe */
378 /* Now check the whole process from top-to-bottom */
380 pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_NETLOGON, &result);
382 DEBUG(0,("Error connecting to NETLOGON pipe. Error was %s\n",
383 nt_errstr(result) ));
387 result = rpccli_netlogon_setup_creds(pipe_hnd,
388 cli->desthost, /* server name */
390 global_myname(), /* client name */
391 global_myname(), /* machine account name */
396 if (!NT_STATUS_IS_OK(result)) {
397 DEBUG(0, ("Error in domain join verification (credential 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",
410 /* We can only check the schannel connection if the client is allowed
411 to do this and the server supports it. If not, just assume success
412 (after all the rpccli_netlogon_setup_creds() succeeded, and we'll
413 do the same again (setup creds) in net_rpc_join_ok(). JRA. */
415 if (lp_client_schannel() && (neg_flags & NETLOGON_NEG_SCHANNEL)) {
416 struct rpc_pipe_client *netlogon_schannel_pipe =
417 cli_rpc_pipe_open_schannel_with_key(cli,
419 PIPE_AUTH_LEVEL_PRIVACY,
424 if (!NT_STATUS_IS_OK(result)) {
425 DEBUG(0, ("Error in domain join verification (schannel setup failed): %s\n\n",
428 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) &&
429 (sec_channel_type == SEC_CHAN_BDC) ) {
430 d_fprintf(stderr, "Please make sure that no computer account\n"
431 "named like this machine (%s) exists in the domain\n",
437 cli_rpc_pipe_close(netlogon_schannel_pipe);
440 cli_rpc_pipe_close(pipe_hnd);
442 /* Now store the secret in the secrets database */
444 strupper_m(CONST_DISCARD(char *, domain));
446 if (!secrets_store_domain_sid(domain, domain_sid)) {
447 DEBUG(0, ("error storing domain sid for %s\n", domain));
451 if (!secrets_store_machine_password(clear_trust_password, domain, sec_channel_type)) {
452 DEBUG(0, ("error storing plaintext domain secrets for %s\n", domain));
455 /* double-check, connection from scratch */
456 result = net_rpc_join_ok(domain, cli->desthost, &cli->dest_ss);
457 retval = NT_STATUS_IS_OK(result) ? 0 : -1;
461 /* Display success or failure */
465 fprintf(stderr,"Unable to join domain %s.\n",domain);
467 printf("Joined domain %s.\n",domain);
473 SAFE_FREE(clear_trust_password);
479 * check that a join is OK
481 * @return A shell status integer (0 for success)
484 int net_rpc_testjoin(int argc, const char **argv)
486 char *domain = smb_xstrdup(opt_target_workgroup);
489 /* Display success or failure */
490 nt_status = net_rpc_join_ok(domain, NULL, NULL);
491 if (!NT_STATUS_IS_OK(nt_status)) {
492 fprintf(stderr,"Join to domain '%s' is not valid: %s\n",
493 nt_errstr(nt_status), domain);
498 printf("Join to '%s' is OK\n",domain);