smbd_join.c revision da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * CDDL HEADER START
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * The contents of this file are subject to the terms of the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Common Development and Distribution License (the "License").
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * You may not use this file except in compliance with the License.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * See the License for the specific language governing permissions
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * and limitations under the License.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * When distributing Covered Code, include this CDDL HEADER in each
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * If applicable, add the following below this CDDL HEADER, with the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * fields enclosed by brackets "[]" replaced with your own identifying
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * information: Portions Copyright [yyyy] [name of copyright owner]
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * CDDL HEADER END
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Use is subject to license terms.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw#pragma ident "%Z%%M% %I% %E% SMI"
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Local protocol flags used to indicate which version of the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * netlogon protocol to use when attempting to find the PDC.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Maximum time to wait for a domain controller (30 seconds).
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Flags used in conjunction with the location and query condition
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * variables.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwtypedef struct smb_netlogon_info {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Inline convenience function to find out if the domain information is
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * valid. The caller can decide whether or not to wait.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * smbd_join
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Joins the specified domain/workgroup
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (void) smb_config_set(SMB_CI_DOMAIN_NAME, info->domain_name);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Ensure that any previous membership of this domain has
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * been cleared from the environment before we start. This
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * will ensure that we don't attempt a NETLOGON_SAMLOGON
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * when attempting to find the PDC.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (smb_auth_ntlm_hash(plain_passwd, passwd_hash) != SMBAUTH_SUCCESS) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw syslog(LOG_ERR, "smbd: could not compute ntlm hash for '%s'",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Temporary delay before creating
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * the workstation trust account.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw syslog(LOG_ERR, "smbd: failed locating domain controller for %s",
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * locate_resource_pdc
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * This is the entry point for discovering a domain controller for the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * specified domain. The caller may block here for around 30 seconds if
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * the system has to go to the network and find a domain controller.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Sometime it would be good to change this to smb_locate_pdc and allow
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * the caller to specify whether or not he wants to wait for a response.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * The actual work of discovering a DC is handled by other threads.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * All we do here is signal the request and wait for a DC or a timeout.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Returns B_TRUE if a domain controller is available.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if ((smb_netlogon_info.snli_flags & SMB_NETLF_LOCATE_DC) == 0) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (void) cond_broadcast(&smb_netlogon_info.snli_locate_cv);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw while (smb_netlogon_info.snli_flags & SMB_NETLF_LOCATE_DC) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw rc = cond_reltimedwait(&smb_netlogon_info.snli_locate_cv,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (void) mutex_unlock(&smb_netlogon_info.snli_locate_mtx);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * smb_netlogon_init
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Initialization of the DC browser and LSA monitor threads.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Returns 0 on success, an error number if thread creation fails.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (void) pthread_attr_setdetachstate(&tattr, PTHREAD_CREATE_DETACHED);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (rc != 0) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * smb_netlogon_dc_browser
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * This is the DC browser thread: it gets woken up whenever someone
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * wants to locate a domain controller.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * With the introduction of Windows 2000, NetBIOS is no longer a
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * requirement for NT domains. If NetBIOS has been disabled on the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * network there will be no browsers and we won't get any response
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * to netlogon requests. So we try to find a DC controller via ADS
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * first. If ADS is disabled or the DNS query fails, we drop back
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * to the netlogon protocol.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * This function will block for up to 30 seconds waiting for the PDC
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * to be discovered. Sometime it would be good to change this to
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * smb_locate_pdc and allow the caller to specify whether or not he
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * wants to wait for a response.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*ARGSUSED*/
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic void *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw for (;;) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw while ((smb_netlogon_info.snli_flags & SMB_NETLF_LOCATE_DC) ==
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (void) mutex_unlock(&smb_netlogon_info.snli_locate_mtx);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (void) strlcpy(resource_domain, smb_netlogon_info.snli_domain,
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (msdcs_lookup_ads() == 0) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (void) cond_broadcast(&smb_netlogon_info.snli_locate_cv);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (void) mutex_unlock(&smb_netlogon_info.snli_locate_mtx);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Notify the LSA monitor to update the
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * primary and trusted domain information.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw (void) cond_broadcast(&smb_netlogon_info.snli_query_cv);
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /*NOTREACHED*/
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * smb_netlogon_lsa_monitor
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * This monitor should run as a separate thread. It waits on a condition
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * variable until someone indicates that the LSA domain information needs
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * to be refreshed. It then queries the DC for the NT domain information:
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * primary, account and trusted domains. The condition variable should be
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * signaled whenever a DC is selected.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Note that the LSA query calls require the DC information and this task
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * may end up blocked on the DC location protocol, which is why this
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * monitor is run as a separate thread. This should only happen if the DC
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * goes down immediately after we located it.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw/*ARGSUSED*/
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwstatic void *
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw for (;;) {
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw while ((smb_netlogon_info.snli_flags & SMB_NETLF_LSA_QUERY) ==
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * Skip the LSA query if Authenticated IPC is supported
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw * and the credential is not yet set.
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "NetlogonLSAMonitor: query "
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "account info failed");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "NetlogonLSAMonitor: enum "
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "trusted domain failed");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw "NetlogonLSAMonitor: update failed");
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw /*NOTREACHED*/