Winbind daemon connection manager
- Copyright (C) Tim Potter 2001
- Copyright (C) Andrew Bartlett 2002
+ Copyright (C) Tim Potter 2001
+ Copyright (C) Andrew Bartlett 2002
+ Copyright (C) Gerald (Jerry) Carter 2003-2005.
+ Copyright (C) Volker Lendecke 2004-2005
+ Copyright (C) Jeremy Allison 2006
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
*/
+#include "includes.h"
#include "winbindd.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_WINBIND
-/* Global list of connections. Initially a DLIST but can become a hash
- table or whatever later. */
-
-struct winbindd_cm_conn {
- struct winbindd_cm_conn *prev, *next;
- fstring domain;
- fstring controller;
- fstring pipe_name;
- size_t mutex_ref_count;
- struct cli_state *cli;
- POLICY_HND pol;
+struct dc_name_ip {
+ fstring name;
+ struct in_addr ip;
};
-static struct winbindd_cm_conn *cm_conns = NULL;
+extern struct winbindd_methods reconnect_methods;
+extern BOOL override_logfile;
+static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain);
+static void set_dc_type_and_flags( struct winbindd_domain *domain );
+static BOOL get_dcs(TALLOC_CTX *mem_ctx, const struct winbindd_domain *domain,
+ struct dc_name_ip **dcs, int *num_dcs);
-/* Choose between anonymous or authenticated connections. We need to use
- an authenticated connection if DCs have the RestrictAnonymous registry
- entry set > 0, or the "Additional restrictions for anonymous
- connections" set in the win2k Local Security Policy.
-
- Caller to free() result in domain, username, password
-*/
+/****************************************************************
+ Child failed to find DC's. Reschedule check.
+****************************************************************/
-static void cm_get_ipc_userpass(char **username, char **domain, char **password)
+static void msg_failed_to_go_online(struct messaging_context *msg,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id,
+ DATA_BLOB *data)
{
- *username = secrets_fetch(SECRETS_AUTH_USER, NULL);
- *domain = secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
- *password = secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
-
- if (*username && **username) {
+ struct winbindd_domain *domain;
+ const char *domainname = (const char *)data->data;
- if (!*domain || !**domain)
- *domain = smb_xstrdup(lp_workgroup());
-
- if (!*password || !**password)
- *password = smb_xstrdup("");
+ if (data->data == NULL || data->length == 0) {
+ return;
+ }
- DEBUG(3, ("IPC$ connections done by user %s\\%s\n",
- *domain, *username));
+ DEBUG(5,("msg_fail_to_go_online: received for domain %s.\n", domainname));
- } else {
- DEBUG(3, ("IPC$ connections done anonymously\n"));
- *username = smb_xstrdup("");
- *domain = smb_xstrdup("");
- *password = smb_xstrdup("");
+ for (domain = domain_list(); domain; domain = domain->next) {
+ if (domain->internal) {
+ continue;
+ }
+
+ if (strequal(domain->name, domainname)) {
+ if (domain->online) {
+ /* We're already online, ignore. */
+ DEBUG(5,("msg_fail_to_go_online: domain %s "
+ "already online.\n", domainname));
+ continue;
+ }
+
+ /* Reschedule the online check. */
+ set_domain_offline(domain);
+ break;
+ }
}
}
-/* Open a connction to the remote server, cache failures for 30 seconds */
+/****************************************************************
+ Actually cause a reconnect from a message.
+****************************************************************/
-static NTSTATUS cm_open_connection(const char *domain, const int pipe_index,
- struct winbindd_cm_conn *new_conn)
+static void msg_try_to_go_online(struct messaging_context *msg,
+ void *private_data,
+ uint32_t msg_type,
+ struct server_id server_id,
+ DATA_BLOB *data)
{
- NTSTATUS result;
- char *ipc_username, *ipc_domain, *ipc_password;
- struct in_addr dc_ip;
- int i;
- BOOL retry = True;
-
- ZERO_STRUCT(dc_ip);
-
- fstrcpy(new_conn->domain, domain);
- fstrcpy(new_conn->pipe_name, get_pipe_name_from_index(pipe_index));
-
- /* connection failure cache has been moved inside of get_dc_name
- so we can deal with half dead DC's --jerry */
+ struct winbindd_domain *domain;
+ const char *domainname = (const char *)data->data;
- if (!get_dc_name(domain, new_conn->controller, &dc_ip)) {
- result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
- add_failed_connection_entry(domain, "", result);
- return result;
+ if (data->data == NULL || data->length == 0) {
+ return;
}
-
- /* Initialise SMB connection */
- cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
-
- DEBUG(5, ("connecting to %s from %s with username [%s]\\[%s]\n",
- new_conn->controller, global_myname(), ipc_domain, ipc_username));
+ DEBUG(5,("msg_try_to_go_online: received for domain %s.\n", domainname));
- for (i = 0; retry && (i < 3); i++) {
- BOOL got_mutex;
- if (!(got_mutex = secrets_named_mutex(new_conn->controller, WINBIND_SERVER_MUTEX_WAIT_TIME))) {
- DEBUG(0,("cm_open_connection: mutex grab failed for %s\n", new_conn->controller));
- result = NT_STATUS_POSSIBLE_DEADLOCK;
+ for (domain = domain_list(); domain; domain = domain->next) {
+ if (domain->internal) {
continue;
}
-
- result = cli_full_connection(&new_conn->cli, global_myname(), new_conn->controller,
- &dc_ip, 0, "IPC$", "IPC", ipc_username, ipc_domain,
- ipc_password, CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK, &retry);
-
- secrets_named_mutex_release(new_conn->controller);
- if (NT_STATUS_IS_OK(result))
+ if (strequal(domain->name, domainname)) {
+
+ if (domain->online) {
+ /* We're already online, ignore. */
+ DEBUG(5,("msg_try_to_go_online: domain %s "
+ "already online.\n", domainname));
+ continue;
+ }
+
+ /* This call takes care of setting the online
+ flag to true if we connected, or re-adding
+ the offline handler if false. Bypasses online
+ check so always does network calls. */
+
+ init_dc_connection_network(domain);
break;
+ }
}
+}
- SAFE_FREE(ipc_username);
- SAFE_FREE(ipc_domain);
- SAFE_FREE(ipc_password);
+/****************************************************************
+ Fork a child to try and contact a DC. Do this as contacting a
+ DC requires blocking lookups and we don't want to block our
+ parent.
+****************************************************************/
- if (!NT_STATUS_IS_OK(result)) {
- add_failed_connection_entry(domain, new_conn->controller, result);
- return result;
+static BOOL fork_child_dc_connect(struct winbindd_domain *domain)
+{
+ struct dc_name_ip *dcs = NULL;
+ int num_dcs = 0;
+ TALLOC_CTX *mem_ctx = NULL;
+ pid_t child_pid;
+ pid_t parent_pid = sys_getpid();
+
+ /* Stop zombies */
+ CatchChild();
+
+ child_pid = sys_fork();
+
+ if (child_pid == -1) {
+ DEBUG(0, ("fork_child_dc_connect: Could not fork: %s\n", strerror(errno)));
+ return False;
}
-
- /* set the domain if empty; needed for schannel connections */
- if ( !*new_conn->cli->domain )
- fstrcpy( new_conn->cli->domain, domain );
-
-
- if ( !cli_nt_session_open (new_conn->cli, pipe_index) ) {
- result = NT_STATUS_PIPE_NOT_AVAILABLE;
- /*
- * only cache a failure if we are not trying to open the
- * **win2k** specific lsarpc UUID. This could be an NT PDC
- * and therefore a failure is normal. This should probably
- * be abstracted to a check for 2k specific pipes and wondering
- * if the PDC is an NT4 box. but since there is only one 2k
- * specific UUID right now, i'm not going to bother. --jerry
- */
- if ( !is_win2k_pipe(pipe_index) )
- add_failed_connection_entry(domain, new_conn->controller, result);
- cli_shutdown(new_conn->cli);
- return result;
+
+ if (child_pid != 0) {
+ /* Parent */
+ messaging_register(winbind_messaging_context(), NULL,
+ MSG_WINBIND_TRY_TO_GO_ONLINE,
+ msg_try_to_go_online);
+ messaging_register(winbind_messaging_context(), NULL,
+ MSG_WINBIND_FAILED_TO_GO_ONLINE,
+ msg_failed_to_go_online);
+ return True;
}
- return NT_STATUS_OK;
-}
+ /* Child. */
-/* Return true if a connection is still alive */
+ /* Leave messages blocked - we will never process one. */
-static BOOL connection_ok(struct winbindd_cm_conn *conn)
-{
- if (!conn) {
- smb_panic("Invalid parameter passed to connection_ok(): conn was NULL!\n");
- return False;
+ /* tdb needs special fork handling */
+ if (tdb_reopen_all(1) == -1) {
+ DEBUG(0,("tdb_reopen_all failed.\n"));
+ _exit(0);
}
- if (!conn->cli) {
- DEBUG(3, ("Connection to %s for domain %s (pipe %s) has NULL conn->cli!\n",
- conn->controller, conn->domain, conn->pipe_name));
- return False;
+ close_conns_after_fork();
+
+ if (!override_logfile) {
+ pstring logfile;
+ pstr_sprintf(logfile, "%s/log.winbindd-dc-connect", dyn_LOGFILEBASE);
+ lp_set_logfile(logfile);
+ reopen_logs();
}
- if (!conn->cli->initialised) {
- DEBUG(3, ("Connection to %s for domain %s (pipe %s) was never initialised!\n",
- conn->controller, conn->domain, conn->pipe_name));
- return False;
+ mem_ctx = talloc_init("fork_child_dc_connect");
+ if (!mem_ctx) {
+ DEBUG(0,("talloc_init failed.\n"));
+ _exit(0);
}
- if (conn->cli->fd == -1) {
- DEBUG(3, ("Connection to %s for domain %s (pipe %s) has died or was never started (fd == -1)\n",
- conn->controller, conn->domain, conn->pipe_name));
- return False;
+ if ((!get_dcs(mem_ctx, domain, &dcs, &num_dcs)) || (num_dcs == 0)) {
+ /* Still offline ? Can't find DC's. */
+ messaging_send_buf(winbind_messaging_context(),
+ pid_to_procid(parent_pid),
+ MSG_WINBIND_FAILED_TO_GO_ONLINE,
+ (uint8 *)domain->name,
+ strlen(domain->name)+1);
+ _exit(0);
}
-
- return True;
+
+ /* We got a DC. Send a message to our parent to get it to
+ try and do the same. */
+
+ messaging_send_buf(winbind_messaging_context(),
+ pid_to_procid(parent_pid),
+ MSG_WINBIND_TRY_TO_GO_ONLINE,
+ (uint8 *)domain->name,
+ strlen(domain->name)+1);
+ _exit(0);
}
-/* Search the cache for a connection. If there is a broken one,
- shut it down properly and return NULL. */
+/****************************************************************
+ Handler triggered if we're offline to try and detect a DC.
+****************************************************************/
-static void find_cm_connection(const char *domain, const char *pipe_name,
- struct winbindd_cm_conn **conn_out)
+static void check_domain_online_handler(struct event_context *ctx,
+ struct timed_event *te,
+ const struct timeval *now,
+ void *private_data)
{
- struct winbindd_cm_conn *conn;
+ struct winbindd_domain *domain =
+ (struct winbindd_domain *)private_data;
- for (conn = cm_conns; conn; ) {
- if (strequal(conn->domain, domain) &&
- strequal(conn->pipe_name, pipe_name)) {
- if (!connection_ok(conn)) {
- /* Dead connection - remove it. */
- struct winbindd_cm_conn *conn_temp = conn->next;
- if (conn->cli)
- cli_shutdown(conn->cli);
- DLIST_REMOVE(cm_conns, conn);
- SAFE_FREE(conn);
- conn = conn_temp; /* Keep the loop moving */
- continue;
- } else {
- break;
- }
- }
- conn = conn->next;
+ DEBUG(10,("check_domain_online_handler: called for domain "
+ "%s (online = %s)\n", domain->name,
+ domain->online ? "True" : "False" ));
+
+ TALLOC_FREE(domain->check_online_event);
+
+ /* Are we still in "startup" mode ? */
+
+ if (domain->startup && (now->tv_sec > domain->startup_time + 30)) {
+ /* No longer in "startup" mode. */
+ DEBUG(10,("check_domain_online_handler: domain %s no longer in 'startup' mode.\n",
+ domain->name ));
+ domain->startup = False;
+ }
+
+ /* We've been told to stay offline, so stay
+ that way. */
+
+ if (get_global_winbindd_state_offline()) {
+ DEBUG(10,("check_domain_online_handler: domain %s remaining globally offline\n",
+ domain->name ));
+ return;
}
- *conn_out = conn;
+ /* Fork a child to test if it can contact a DC.
+ If it can then send ourselves a message to
+ cause a reconnect. */
+
+ fork_child_dc_connect(domain);
}
-/* Initialize a new connection up to the RPC BIND. */
+/****************************************************************
+ If we're still offline setup the timeout check.
+****************************************************************/
-static NTSTATUS new_cm_connection(const char *domain, const char *pipe_name,
- struct winbindd_cm_conn **conn_out)
+static void calc_new_online_timeout_check(struct winbindd_domain *domain)
{
- struct winbindd_cm_conn *conn;
- NTSTATUS result;
+ int wbc = lp_winbind_cache_time();
- if (!(conn = malloc(sizeof(*conn))))
- return NT_STATUS_NO_MEMORY;
-
- ZERO_STRUCTP(conn);
-
- if (!NT_STATUS_IS_OK(result = cm_open_connection(domain, get_pipe_index(pipe_name), conn))) {
- DEBUG(3, ("Could not open a connection to %s for %s (%s)\n",
- domain, pipe_name, nt_errstr(result)));
- SAFE_FREE(conn);
- return result;
+ if (domain->startup) {
+ domain->check_online_timeout = 10;
+ } else if (domain->check_online_timeout < wbc) {
+ domain->check_online_timeout = wbc;
}
- DLIST_ADD(cm_conns, conn);
-
- *conn_out = conn;
- return NT_STATUS_OK;
}
-/* Get a connection to the remote DC and open the pipe. If there is already a connection, use that */
+/****************************************************************
+ Set domain offline and also add handler to put us back online
+ if we detect a DC.
+****************************************************************/
-static NTSTATUS get_connection_from_cache(const char *domain, const char *pipe_name,
- struct winbindd_cm_conn **conn_out)
+void set_domain_offline(struct winbindd_domain *domain)
{
- find_cm_connection(domain, pipe_name, conn_out);
+ DEBUG(10,("set_domain_offline: called for domain %s\n",
+ domain->name ));
- if (*conn_out != NULL)
- return NT_STATUS_OK;
+ TALLOC_FREE(domain->check_online_event);
- return new_cm_connection(domain, pipe_name, conn_out);
-}
+ if (domain->internal) {
+ DEBUG(3,("set_domain_offline: domain %s is internal - logic error.\n",
+ domain->name ));
+ return;
+ }
-/**********************************************************************************
-**********************************************************************************/
+ domain->online = False;
-BOOL cm_check_for_native_mode_win2k( const char *domain )
-{
- NTSTATUS result;
- struct winbindd_cm_conn conn;
- DS_DOMINFO_CTR ctr;
- BOOL ret = False;
-
- ZERO_STRUCT( conn );
- ZERO_STRUCT( ctr );
-
-
- if ( !NT_STATUS_IS_OK(result = cm_open_connection(domain, PI_LSARPC_DS, &conn)) ) {
- DEBUG(5, ("cm_check_for_native_mode_win2k: Could not open a connection to %s for PIPE_LSARPC (%s)\n",
- domain, nt_errstr(result)));
- return False;
+ /* Offline domains are always initialized. They're
+ re-initialized when they go back online. */
+
+ domain->initialized = True;
+
+ /* We only add the timeout handler that checks and
+ allows us to go back online when we've not
+ been told to remain offline. */
+
+ if (get_global_winbindd_state_offline()) {
+ DEBUG(10,("set_domain_offline: domain %s remaining globally offline\n",
+ domain->name ));
+ return;
}
-
- if ( conn.cli ) {
- if ( !NT_STATUS_IS_OK(cli_ds_getprimarydominfo( conn.cli,
- conn.cli->mem_ctx, DsRolePrimaryDomainInfoBasic, &ctr)) ) {
- ret = False;
- goto done;
- }
+
+ /* If we're in statup mode, check again in 10 seconds, not in
+ lp_winbind_cache_time() seconds (which is 5 mins by default). */
+
+ calc_new_online_timeout_check(domain);
+
+ domain->check_online_event = event_add_timed(winbind_event_context(),
+ NULL,
+ timeval_current_ofs(domain->check_online_timeout,0),
+ "check_domain_online_handler",
+ check_domain_online_handler,
+ domain);
+
+ /* The above *has* to succeed for winbindd to work. */
+ if (!domain->check_online_event) {
+ smb_panic("set_domain_offline: failed to add online handler");
}
-
- if ( (ctr.basic->flags & DSROLE_PRIMARY_DS_RUNNING)
- && !(ctr.basic->flags & DSROLE_PRIMARY_DS_MIXED_MODE) )
- ret = True;
-done:
+ DEBUG(10,("set_domain_offline: added event handler for domain %s\n",
+ domain->name ));
-#if 0
- /*
- * I don't think we need to shutdown here ? JRA.
- */
- if ( conn.cli )
- cli_shutdown( conn.cli );
-#endif
-
- return ret;
-}
+ /* Send an offline message to the idmap child when our
+ primary domain goes offline */
+ if ( domain->primary ) {
+ struct winbindd_child *idmap = idmap_child();
+
+ if ( idmap->pid != 0 ) {
+ messaging_send_buf(winbind_messaging_context(),
+ pid_to_procid(idmap->pid),
+ MSG_WINBIND_OFFLINE,
+ (uint8 *)domain->name,
+ strlen(domain->name)+1);
+ }
+ }
+ return;
+}
-/* Return a LSA policy handle on a domain */
+/****************************************************************
+ Set domain online - if allowed.
+****************************************************************/
-NTSTATUS cm_get_lsa_handle(const char *domain, CLI_POLICY_HND **return_hnd)
+static void set_domain_online(struct winbindd_domain *domain)
{
- struct winbindd_cm_conn *conn;
- uint32 des_access = SEC_RIGHTS_MAXIMUM_ALLOWED;
- NTSTATUS result;
- static CLI_POLICY_HND hnd;
+ struct timeval now;
- /* Look for existing connections */
-
- if (!NT_STATUS_IS_OK(result = get_connection_from_cache(domain, PIPE_LSARPC, &conn)))
- return result;
+ DEBUG(10,("set_domain_online: called for domain %s\n",
+ domain->name ));
- /* This *shitty* code needs scrapping ! JRA */
-
- if (policy_handle_is_valid(&conn->pol)) {
- hnd.pol = conn->pol;
- hnd.cli = conn->cli;
- *return_hnd = &hnd;
+ if (domain->internal) {
+ DEBUG(3,("set_domain_online: domain %s is internal - logic error.\n",
+ domain->name ));
+ return;
+ }
- return NT_STATUS_OK;
+ if (get_global_winbindd_state_offline()) {
+ DEBUG(10,("set_domain_online: domain %s remaining globally offline\n",
+ domain->name ));
+ return;
}
-
- result = cli_lsa_open_policy(conn->cli, conn->cli->mem_ctx, False,
- des_access, &conn->pol);
- if (!NT_STATUS_IS_OK(result)) {
- /* Hit the cache code again. This cleans out the old connection and gets a new one */
- if (conn->cli->fd == -1) { /* Try again, if the remote host disapeared */
- if (!NT_STATUS_IS_OK(result = get_connection_from_cache(domain, PIPE_LSARPC, &conn)))
- return result;
+ /* If we are waiting to get a krb5 ticket, trigger immediately. */
+ GetTimeOfDay(&now);
+ set_event_dispatch_time(winbind_event_context(),
+ "krb5_ticket_gain_handler", now);
- result = cli_lsa_open_policy(conn->cli, conn->cli->mem_ctx, False,
- des_access, &conn->pol);
- }
+ /* Ok, we're out of any startup mode now... */
+ domain->startup = False;
+
+ if (domain->online == False) {
+ /* We were offline - now we're online. We default to
+ using the MS-RPC backend if we started offline,
+ and if we're going online for the first time we
+ should really re-initialize the backends and the
+ checks to see if we're talking to an AD or NT domain.
+ */
+
+ domain->initialized = False;
- if (!NT_STATUS_IS_OK(result)) {
- cli_shutdown(conn->cli);
- DLIST_REMOVE(cm_conns, conn);
- SAFE_FREE(conn);
- return result;
+ /* 'reconnect_methods' is the MS-RPC backend. */
+ if (domain->backend == &reconnect_methods) {
+ domain->backend = NULL;
}
- }
+ }
- hnd.pol = conn->pol;
- hnd.cli = conn->cli;
+ /* Ensure we have no online timeout checks. */
+ domain->check_online_timeout = 0;
+ TALLOC_FREE(domain->check_online_event);
- *return_hnd = &hnd;
+ /* Ensure we ignore any pending child messages. */
+ messaging_deregister(winbind_messaging_context(),
+ MSG_WINBIND_TRY_TO_GO_ONLINE, NULL);
+ messaging_deregister(winbind_messaging_context(),
+ MSG_WINBIND_FAILED_TO_GO_ONLINE, NULL);
- return NT_STATUS_OK;
+ domain->online = True;
+
+ /* Send an online message to the idmap child when our
+ primary domain comes online */
+
+ if ( domain->primary ) {
+ struct winbindd_child *idmap = idmap_child();
+
+ if ( idmap->pid != 0 ) {
+ messaging_send_buf(winbind_messaging_context(),
+ pid_to_procid(idmap->pid),
+ MSG_WINBIND_ONLINE,
+ (uint8 *)domain->name,
+ strlen(domain->name)+1);
+ }
+ }
+
+ return;
}
-/* Return a SAM policy handle on a domain */
+/****************************************************************
+ Requested to set a domain online.
+****************************************************************/
-NTSTATUS cm_get_sam_handle(char *domain, CLI_POLICY_HND **return_hnd)
-{
- struct winbindd_cm_conn *conn;
- uint32 des_access = SEC_RIGHTS_MAXIMUM_ALLOWED;
- NTSTATUS result;
- static CLI_POLICY_HND hnd;
+void set_domain_online_request(struct winbindd_domain *domain)
+{
+ struct timeval tev;
- /* Look for existing connections */
+ DEBUG(10,("set_domain_online_request: called for domain %s\n",
+ domain->name ));
- if (!NT_STATUS_IS_OK(result = get_connection_from_cache(domain, PIPE_SAMR, &conn)))
- return result;
-
- /* This *shitty* code needs scrapping ! JRA */
-
- if (policy_handle_is_valid(&conn->pol)) {
- hnd.pol = conn->pol;
- hnd.cli = conn->cli;
-
- *return_hnd = &hnd;
+ if (get_global_winbindd_state_offline()) {
+ DEBUG(10,("set_domain_online_request: domain %s remaining globally offline\n",
+ domain->name ));
+ return;
+ }
- return NT_STATUS_OK;
+ /* We've been told it's safe to go online and
+ try and connect to a DC. But I don't believe it
+ because network manager seems to lie.
+ Wait at least 5 seconds. Heuristics suck... */
+
+ if (!domain->check_online_event) {
+ /* If we've come from being globally offline we
+ don't have a check online event handler set.
+ We need to add one now we're trying to go
+ back online. */
+
+ DEBUG(10,("set_domain_online_request: domain %s was globally offline.\n",
+ domain->name ));
+
+ domain->check_online_event = event_add_timed(winbind_event_context(),
+ NULL,
+ timeval_current_ofs(5, 0),
+ "check_domain_online_handler",
+ check_domain_online_handler,
+ domain);
+
+ /* The above *has* to succeed for winbindd to work. */
+ if (!domain->check_online_event) {
+ smb_panic("set_domain_online_request: failed to add online handler");
+ }
}
-
- result = cli_samr_connect(conn->cli, conn->cli->mem_ctx,
- des_access, &conn->pol);
- if (!NT_STATUS_IS_OK(result)) {
- /* Hit the cache code again. This cleans out the old connection and gets a new one */
- if (conn->cli->fd == -1) { /* Try again, if the remote host disapeared */
-
- if (!NT_STATUS_IS_OK(result = get_connection_from_cache(domain, PIPE_SAMR, &conn)))
- return result;
+ GetTimeOfDay(&tev);
- result = cli_samr_connect(conn->cli, conn->cli->mem_ctx,
- des_access, &conn->pol);
- }
+ /* Go into "startup" mode again. */
+ domain->startup_time = tev.tv_sec;
+ domain->startup = True;
- if (!NT_STATUS_IS_OK(result)) {
-
- cli_shutdown(conn->cli);
- DLIST_REMOVE(cm_conns, conn);
- SAFE_FREE(conn);
-
- return result;
- }
- }
+ tev.tv_sec += 5;
- hnd.pol = conn->pol;
- hnd.cli = conn->cli;
+ set_event_dispatch_time(winbind_event_context(), "check_domain_online_handler", tev);
+}
- *return_hnd = &hnd;
+/****************************************************************
+ Add -ve connection cache entries for domain and realm.
+****************************************************************/
- return NT_STATUS_OK;
+void winbind_add_failed_connection_entry(const struct winbindd_domain *domain,
+ const char *server,
+ NTSTATUS result)
+{
+ add_failed_connection_entry(domain->name, server, result);
+ /* If this was the saf name for the last thing we talked to,
+ remove it. */
+ saf_delete(domain->name);
+ if (*domain->alt_name) {
+ add_failed_connection_entry(domain->alt_name, server, result);
+ saf_delete(domain->alt_name);
+ }
}
-/* Get a handle on a netlogon pipe. This is a bit of a hack to re-use the
- netlogon pipe as no handle is returned. */
+/* Choose between anonymous or authenticated connections. We need to use
+ an authenticated connection if DCs have the RestrictAnonymous registry
+ entry set > 0, or the "Additional restrictions for anonymous
+ connections" set in the win2k Local Security Policy.
+
+ Caller to free() result in domain, username, password
+*/
-NTSTATUS cm_get_netlogon_cli(const char *domain,
- const unsigned char *trust_passwd,
- uint32 sec_channel_type,
- BOOL fresh,
- struct cli_state **cli)
+static void cm_get_ipc_userpass(char **username, char **domain, char **password)
{
- NTSTATUS result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
- struct winbindd_cm_conn *conn;
- fstring lock_name;
- BOOL got_mutex;
+ *username = (char *)secrets_fetch(SECRETS_AUTH_USER, NULL);
+ *domain = (char *)secrets_fetch(SECRETS_AUTH_DOMAIN, NULL);
+ *password = (char *)secrets_fetch(SECRETS_AUTH_PASSWORD, NULL);
+
+ if (*username && **username) {
+
+ if (!*domain || !**domain)
+ *domain = smb_xstrdup(lp_workgroup());
+
+ if (!*password || !**password)
+ *password = smb_xstrdup("");
- if (!cli)
- return NT_STATUS_INVALID_PARAMETER;
+ DEBUG(3, ("cm_get_ipc_userpass: Retrieved auth-user from secrets.tdb [%s\\%s]\n",
+ *domain, *username));
- /* Open an initial conection - keep the mutex. */
+ } else {
+ DEBUG(3, ("cm_get_ipc_userpass: No auth-user defined\n"));
+ *username = smb_xstrdup("");
+ *domain = smb_xstrdup("");
+ *password = smb_xstrdup("");
+ }
+}
- find_cm_connection(domain, PIPE_NETLOGON, &conn);
+static BOOL get_dc_name_via_netlogon(const struct winbindd_domain *domain,
+ fstring dcname, struct in_addr *dc_ip)
+{
+ struct winbindd_domain *our_domain = NULL;
+ struct rpc_pipe_client *netlogon_pipe = NULL;
+ NTSTATUS result;
+ WERROR werr;
+ TALLOC_CTX *mem_ctx;
+ unsigned int orig_timeout;
+ fstring tmp;
+ char *p;
- if ( fresh && (conn != NULL) ) {
- cli_shutdown(conn->cli);
- conn->cli = NULL;
+ /* Hmmmm. We can only open one connection to the NETLOGON pipe at the
+ * moment.... */
- conn = NULL;
+ if (IS_DC) {
+ return False;
+ }
- /* purge connection from cache */
- find_cm_connection(domain, PIPE_NETLOGON, &conn);
- if (conn != NULL) {
- DEBUG(0,("Could not purge connection\n"));
- return NT_STATUS_UNSUCCESSFUL;
- }
+ if (domain->primary) {
+ return False;
}
- if (conn != NULL) {
- *cli = conn->cli;
- return NT_STATUS_OK;
+ our_domain = find_our_domain();
+
+ if ((mem_ctx = talloc_init("get_dc_name_via_netlogon")) == NULL) {
+ return False;
+ }
+
+ result = cm_connect_netlogon(our_domain, &netlogon_pipe);
+ if (!NT_STATUS_IS_OK(result)) {
+ talloc_destroy(mem_ctx);
+ return False;
}
- result = new_cm_connection(domain, PIPE_NETLOGON, &conn);
+ /* This call can take a long time - allow the server to time out.
+ 35 seconds should do it. */
- if (!NT_STATUS_IS_OK(result))
- return result;
+ orig_timeout = cli_set_timeout(netlogon_pipe->cli, 35000);
- fstr_sprintf(lock_name, "NETLOGON\\%s", conn->controller);
+ werr = rpccli_netlogon_getanydcname(netlogon_pipe, mem_ctx, our_domain->dcname,
+ domain->name, tmp);
+
+ /* And restore our original timeout. */
+ cli_set_timeout(netlogon_pipe->cli, orig_timeout);
- if (!(got_mutex = secrets_named_mutex(lock_name, WINBIND_SERVER_MUTEX_WAIT_TIME))) {
- DEBUG(0,("cm_get_netlogon_cli: mutex grab failed for %s\n", conn->controller));
+ talloc_destroy(mem_ctx);
+
+ if (!W_ERROR_IS_OK(werr)) {
+ DEBUG(10, ("rpccli_netlogon_getanydcname failed: %s\n",
+ dos_errstr(werr)));
+ return False;
}
-
- if ( sec_channel_type == SEC_CHAN_DOMAIN )
- fstr_sprintf(conn->cli->mach_acct, "%s$", lp_workgroup());
-
- result = cli_nt_establish_netlogon(conn->cli, sec_channel_type, trust_passwd);
-
- if (got_mutex)
- secrets_named_mutex_release(lock_name);
-
- if (!NT_STATUS_IS_OK(result)) {
- cli_shutdown(conn->cli);
- DLIST_REMOVE(cm_conns, conn);
- SAFE_FREE(conn);
- return result;
+
+ /* cli_netlogon_getanydcname gives us a name with \\ */
+ p = tmp;
+ if (*p == '\\') {
+ p+=1;
+ }
+ if (*p == '\\') {
+ p+=1;
}
- *cli = conn->cli;
+ fstrcpy(dcname, p);
- return result;
+ DEBUG(10, ("rpccli_netlogon_getanydcname returned %s\n", dcname));
+
+ if (!resolve_name(dcname, dc_ip, 0x20)) {
+ return False;
+ }
+
+ return True;
}
-/* Dump the current connection status */
+/************************************************************************
+ Given a fd with a just-connected TCP connection to a DC, open a connection
+ to the pipe.
+************************************************************************/
-static void dump_conn_list(void)
+static NTSTATUS cm_prepare_connection(const struct winbindd_domain *domain,
+ const int sockfd,
+ const char *controller,
+ struct cli_state **cli,
+ BOOL *retry)
{
- struct winbindd_cm_conn *con;
+ char *machine_password, *machine_krb5_principal, *machine_account;
+ char *ipc_username, *ipc_domain, *ipc_password;
- DEBUG(0, ("\tDomain Controller Pipe\n"));
+ BOOL got_mutex;
- for(con = cm_conns; con; con = con->next) {
- char *msg;
+ NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
- /* Display pipe info */
-
- if (asprintf(&msg, "\t%-15s %-15s %-16s", con->domain, con->controller, con->pipe_name) < 0) {
- DEBUG(0, ("Error: not enough memory!\n"));
- } else {
- DEBUG(0, ("%s\n", msg));
- SAFE_FREE(msg);
- }
+ struct sockaddr peeraddr;
+ socklen_t peeraddr_len;
+
+ struct sockaddr_in *peeraddr_in = (struct sockaddr_in *)&peeraddr;
+
+ DEBUG(10,("cm_prepare_connection: connecting to DC %s for domain %s\n",
+ controller, domain->name ));
+
+ machine_password = secrets_fetch_machine_password(lp_workgroup(), NULL,
+ NULL);
+
+ if (asprintf(&machine_account, "%s$", global_myname()) == -1) {
+ SAFE_FREE(machine_password);
+ return NT_STATUS_NO_MEMORY;
}
-}
-void winbindd_cm_status(void)
-{
- /* List open connections */
+ if (asprintf(&machine_krb5_principal, "%s$@%s", global_myname(),
+ lp_realm()) == -1) {
+ SAFE_FREE(machine_account);
+ SAFE_FREE(machine_password);
+ return NT_STATUS_NO_MEMORY;
+ }
- DEBUG(0, ("winbindd connection manager status:\n"));
+ cm_get_ipc_userpass(&ipc_username, &ipc_domain, &ipc_password);
- if (cm_conns)
- dump_conn_list();
- else
- DEBUG(0, ("\tNo active connections\n"));
-}
+ *retry = True;
-/* Close all cached connections */
+ got_mutex = secrets_named_mutex(controller,
+ WINBIND_SERVER_MUTEX_WAIT_TIME);
-void winbindd_cm_flush(void)
-{
- struct winbindd_cm_conn *conn, tmp;
+ if (!got_mutex) {
+ DEBUG(0,("cm_prepare_connection: mutex grab failed for %s\n",
+ controller));
+ result = NT_STATUS_POSSIBLE_DEADLOCK;
+ goto done;
+ }
- /* Flush connection cache */
+ if ((*cli = cli_initialise()) == NULL) {
+ DEBUG(1, ("Could not cli_initialize\n"));
+ result = NT_STATUS_NO_MEMORY;
+ goto done;
+ }
- for (conn = cm_conns; conn; conn = conn->next) {
+ (*cli)->timeout = 10000; /* 10 seconds */
+ (*cli)->fd = sockfd;
+ fstrcpy((*cli)->desthost, controller);
+ (*cli)->use_kerberos = True;
- if (!connection_ok(conn))
- continue;
+ peeraddr_len = sizeof(peeraddr);
- DEBUG(10, ("Closing connection to %s on %s\n",
- conn->pipe_name, conn->controller));
+ if ((getpeername((*cli)->fd, &peeraddr, &peeraddr_len) != 0) ||
+ (peeraddr_len != sizeof(struct sockaddr_in)) ||
+ (peeraddr_in->sin_family != PF_INET))
+ {
+ DEBUG(0,("cm_prepare_connection: %s\n", strerror(errno)));
+ result = NT_STATUS_UNSUCCESSFUL;
+ goto done;
+ }
- if (conn->cli)
- cli_shutdown(conn->cli);
+ if (ntohs(peeraddr_in->sin_port) == 139) {
+ struct nmb_name calling;
+ struct nmb_name called;
- tmp.next = conn->next;
+ make_nmb_name(&calling, global_myname(), 0x0);
+ make_nmb_name(&called, "*SMBSERVER", 0x20);
- DLIST_REMOVE(cm_conns, conn);
- SAFE_FREE(conn);
- conn = &tmp;
+ if (!cli_session_request(*cli, &calling, &called)) {
+ DEBUG(8, ("cli_session_request failed for %s\n",
+ controller));
+ result = NT_STATUS_UNSUCCESSFUL;
+ goto done;
+ }
}
- /* Flush failed connection cache */
+ cli_setup_signing_state(*cli, Undefined);
- flush_negative_conn_cache();
+ if (!cli_negprot(*cli)) {
+ DEBUG(1, ("cli_negprot failed\n"));
+ result = NT_STATUS_UNSUCCESSFUL;
+ goto done;
+ }
+
+ if ((*cli)->protocol >= PROTOCOL_NT1 && (*cli)->capabilities & CAP_EXTENDED_SECURITY) {
+ ADS_STATUS ads_status;
+
+ if (lp_security() == SEC_ADS) {
+
+ /* Try a krb5 session */
+
+ (*cli)->use_kerberos = True;
+ DEBUG(5, ("connecting to %s from %s with kerberos principal "
+ "[%s]\n", controller, global_myname(),
+ machine_krb5_principal));
+
+ ads_status = cli_session_setup_spnego(*cli,
+ machine_krb5_principal,
+ machine_password,
+ lp_workgroup());
+
+ if (!ADS_ERR_OK(ads_status)) {
+ DEBUG(4,("failed kerberos session setup with %s\n",
+ ads_errstr(ads_status)));
+ }
+
+ result = ads_ntstatus(ads_status);
+ if (NT_STATUS_IS_OK(result)) {
+ /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
+ cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
+ goto session_setup_done;
+ }
+ }
+
+ /* Fall back to non-kerberos session setup using NTLMSSP SPNEGO with the machine account. */
+ (*cli)->use_kerberos = False;
+
+ DEBUG(5, ("connecting to %s from %s with username "
+ "[%s]\\[%s]\n", controller, global_myname(),
+ lp_workgroup(), machine_account));
+
+ ads_status = cli_session_setup_spnego(*cli,
+ machine_account,
+ machine_password,
+ lp_workgroup());
+ if (!ADS_ERR_OK(ads_status)) {
+ DEBUG(4, ("authenticated session setup failed with %s\n",
+ ads_errstr(ads_status)));
+ }
+
+ result = ads_ntstatus(ads_status);
+ if (NT_STATUS_IS_OK(result)) {
+ /* Ensure creds are stored for NTLMSSP authenticated pipe access. */
+ cli_init_creds(*cli, machine_account, lp_workgroup(), machine_password);
+ goto session_setup_done;
+ }
+ }
+
+ /* Fall back to non-kerberos session setup */
+
+ (*cli)->use_kerberos = False;
+
+ if ((((*cli)->sec_mode & NEGOTIATE_SECURITY_CHALLENGE_RESPONSE) != 0) &&
+ (strlen(ipc_username) > 0)) {
+
+ /* Only try authenticated if we have a username */
+
+ DEBUG(5, ("connecting to %s from %s with username "
+ "[%s]\\[%s]\n", controller, global_myname(),
+ ipc_domain, ipc_username));
+
+ if (NT_STATUS_IS_OK(cli_session_setup(
+ *cli, ipc_username,
+ ipc_password, strlen(ipc_password)+1,
+ ipc_password, strlen(ipc_password)+1,
+ ipc_domain))) {
+ /* Successful logon with given username. */
+ cli_init_creds(*cli, ipc_username, ipc_domain, ipc_password);
+ goto session_setup_done;
+ } else {
+ DEBUG(4, ("authenticated session setup with user %s\\%s failed.\n",
+ ipc_domain, ipc_username ));
+ }
+ }
+
+ /* Fall back to anonymous connection, this might fail later */
+
+ if (NT_STATUS_IS_OK(cli_session_setup(*cli, "", NULL, 0,
+ NULL, 0, ""))) {
+ DEBUG(5, ("Connected anonymously\n"));
+ cli_init_creds(*cli, "", "", "");
+ goto session_setup_done;
+ }
+
+ result = cli_nt_error(*cli);
+
+ if (NT_STATUS_IS_OK(result))
+ result = NT_STATUS_UNSUCCESSFUL;
+
+ /* We can't session setup */
+
+ goto done;
+
+ session_setup_done:
+
+ /* cache the server name for later connections */
+
+ saf_store( domain->name, (*cli)->desthost );
+ if (domain->alt_name && (*cli)->use_kerberos) {
+ saf_store( domain->alt_name, (*cli)->desthost );
+ }
+
+ if (!cli_send_tconX(*cli, "IPC$", "IPC", "", 0)) {
+
+ result = cli_nt_error(*cli);
+
+ DEBUG(1,("failed tcon_X with %s\n", nt_errstr(result)));
+
+ if (NT_STATUS_IS_OK(result))
+ result = NT_STATUS_UNSUCCESSFUL;
+
+ goto done;
+ }
+
+ secrets_named_mutex_release(controller);
+ got_mutex = False;
+ *retry = False;
+
+ /* set the domain if empty; needed for schannel connections */
+ if ( !*(*cli)->domain ) {
+ fstrcpy( (*cli)->domain, domain->name );
+ }
+
+ result = NT_STATUS_OK;
+
+ done:
+ if (got_mutex) {
+ secrets_named_mutex_release(controller);
+ }
+
+ SAFE_FREE(machine_account);
+ SAFE_FREE(machine_password);
+ SAFE_FREE(machine_krb5_principal);
+ SAFE_FREE(ipc_username);
+ SAFE_FREE(ipc_domain);
+ SAFE_FREE(ipc_password);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ winbind_add_failed_connection_entry(domain, controller, result);
+ if ((*cli) != NULL) {
+ cli_shutdown(*cli);
+ *cli = NULL;
+ }
+ }
+
+ return result;
+}
+
+static BOOL add_one_dc_unique(TALLOC_CTX *mem_ctx, const char *domain_name,
+ const char *dcname, struct in_addr ip,
+ struct dc_name_ip **dcs, int *num)
+{
+ if (!NT_STATUS_IS_OK(check_negative_conn_cache(domain_name, dcname))) {
+ DEBUG(10, ("DC %s was in the negative conn cache\n", dcname));
+ return False;
+ }
+
+ *dcs = TALLOC_REALLOC_ARRAY(mem_ctx, *dcs, struct dc_name_ip, (*num)+1);
+
+ if (*dcs == NULL)
+ return False;
+
+ fstrcpy((*dcs)[*num].name, dcname);
+ (*dcs)[*num].ip = ip;
+ *num += 1;
+ return True;
+}
+
+static BOOL add_sockaddr_to_array(TALLOC_CTX *mem_ctx,
+ struct in_addr ip, uint16 port,
+ struct sockaddr_in **addrs, int *num)
+{
+ *addrs = TALLOC_REALLOC_ARRAY(mem_ctx, *addrs, struct sockaddr_in, (*num)+1);
+
+ if (*addrs == NULL) {
+ *num = 0;
+ return False;
+ }
+
+ (*addrs)[*num].sin_family = PF_INET;
+ putip((char *)&((*addrs)[*num].sin_addr), (char *)&ip);
+ (*addrs)[*num].sin_port = htons(port);
+
+ *num += 1;
+ return True;
+}
+
+static void mailslot_name(struct in_addr dc_ip, fstring name)
+{
+ fstr_sprintf(name, "\\MAILSLOT\\NET\\GETDC%X", dc_ip.s_addr);
+}
+
+static BOOL send_getdc_request(struct in_addr dc_ip,
+ const char *domain_name,
+ const DOM_SID *sid)
+{
+ pstring outbuf;
+ char *p;
+ fstring my_acct_name;
+ fstring my_mailslot;
+
+ mailslot_name(dc_ip, my_mailslot);
+
+ memset(outbuf, '\0', sizeof(outbuf));
+
+ p = outbuf;
+
+ SCVAL(p, 0, SAMLOGON);
+ p++;
+
+ SCVAL(p, 0, 0); /* Count pointer ... */
+ p++;
+
+ SIVAL(p, 0, 0); /* The sender's token ... */
+ p += 2;
+
+ p += dos_PutUniCode(p, global_myname(), sizeof(pstring), True);
+ fstr_sprintf(my_acct_name, "%s$", global_myname());
+ p += dos_PutUniCode(p, my_acct_name, sizeof(pstring), True);
+
+ memcpy(p, my_mailslot, strlen(my_mailslot)+1);
+ p += strlen(my_mailslot)+1;
+
+ SIVAL(p, 0, 0x80);
+ p+=4;
+
+ SIVAL(p, 0, sid_size(sid));
+ p+=4;
+
+ p = ALIGN4(p, outbuf);
+
+ sid_linearize(p, sid_size(sid), sid);
+ p += sid_size(sid);
+
+ SIVAL(p, 0, 1);
+ SSVAL(p, 4, 0xffff);
+ SSVAL(p, 6, 0xffff);
+ p+=8;
+
+ return cli_send_mailslot(winbind_messaging_context(),
+ False, "\\MAILSLOT\\NET\\NTLOGON", 0,
+ outbuf, PTR_DIFF(p, outbuf),
+ global_myname(), 0, domain_name, 0x1c,
+ dc_ip);
+}
+
+static BOOL receive_getdc_response(struct in_addr dc_ip,
+ const char *domain_name,
+ fstring dc_name)
+{
+ struct packet_struct *packet;
+ fstring my_mailslot;
+ char *buf, *p;
+ fstring dcname, user, domain;
+ int len;
+
+ mailslot_name(dc_ip, my_mailslot);
+
+ packet = receive_unexpected(DGRAM_PACKET, 0, my_mailslot);
+
+ if (packet == NULL) {
+ DEBUG(5, ("Did not receive packet for %s\n", my_mailslot));
+ return False;
+ }
+
+ DEBUG(5, ("Received packet for %s\n", my_mailslot));
+
+ buf = packet->packet.dgram.data;
+ len = packet->packet.dgram.datasize;
+
+ if (len < 70) {
+ /* 70 is a completely arbitrary value to make sure
+ the SVAL below does not read uninitialized memory */
+ DEBUG(3, ("GetDC got short response\n"));
+ return False;
+ }
+
+ /* This should be (buf-4)+SVAL(buf-4, smb_vwv12)... */
+ p = buf+SVAL(buf, smb_vwv10);
+
+ if (CVAL(p,0) != SAMLOGON_R) {
+ DEBUG(8, ("GetDC got invalid response type %d\n", CVAL(p, 0)));
+ return False;
+ }
+
+ p+=2;
+ pull_ucs2(buf, dcname, p, sizeof(dcname), PTR_DIFF(buf+len, p),
+ STR_TERMINATE|STR_NOALIGN);
+ p = skip_unibuf(p, PTR_DIFF(buf+len, p));
+ pull_ucs2(buf, user, p, sizeof(dcname), PTR_DIFF(buf+len, p),
+ STR_TERMINATE|STR_NOALIGN);
+ p = skip_unibuf(p, PTR_DIFF(buf+len, p));
+ pull_ucs2(buf, domain, p, sizeof(dcname), PTR_DIFF(buf+len, p),
+ STR_TERMINATE|STR_NOALIGN);
+ p = skip_unibuf(p, PTR_DIFF(buf+len, p));
+
+ if (!strequal(domain, domain_name)) {
+ DEBUG(3, ("GetDC: Expected domain %s, got %s\n",
+ domain_name, domain));
+ return False;
+ }
+
+ p = dcname;
+ if (*p == '\\') p += 1;
+ if (*p == '\\') p += 1;
+
+ fstrcpy(dc_name, p);
+
+ DEBUG(10, ("GetDC gave name %s for domain %s\n",
+ dc_name, domain));
+
+ return True;
+}
+
+/*******************************************************************
+ convert an ip to a name
+*******************************************************************/
+
+static BOOL dcip_to_name(const struct winbindd_domain *domain, struct in_addr ip, fstring name )
+{
+ struct ip_service ip_list;
+
+ ip_list.ip = ip;
+ ip_list.port = 0;
+
+#ifdef WITH_ADS
+ /* For active directory servers, try to get the ldap server name.
+ None of these failures should be considered critical for now */
+
+ if (lp_security() == SEC_ADS) {
+ ADS_STRUCT *ads;
+
+ ads = ads_init(domain->alt_name, domain->name, NULL);
+ ads->auth.flags |= ADS_AUTH_NO_BIND;
+
+ if (ads_try_connect( ads, inet_ntoa(ip) ) ) {
+ /* We got a cldap packet. */
+ fstrcpy(name, ads->config.ldap_server_name);
+ namecache_store(name, 0x20, 1, &ip_list);
+
+ DEBUG(10,("dcip_to_name: flags = 0x%x\n", (unsigned int)ads->config.flags));
+
+ if (domain->primary && (ads->config.flags & ADS_KDC) && ads_closest_dc(ads)) {
+ char *sitename = sitename_fetch(ads->config.realm);
+
+ /* We're going to use this KDC for this realm/domain.
+ If we are using sites, then force the krb5 libs
+ to use this KDC. */
+
+ create_local_private_krb5_conf_for_domain(domain->alt_name,
+ domain->name,
+ sitename,
+ ip);
+
+ SAFE_FREE(sitename);
+ /* Ensure we contact this DC also. */
+ saf_store( domain->name, name);
+ saf_store( domain->alt_name, name);
+ }
+
+ ads_destroy( &ads );
+ return True;
+ }
+
+ ads_destroy( &ads );
+ }
+#endif
+
+ /* try GETDC requests next */
+
+ if (send_getdc_request(ip, domain->name, &domain->sid)) {
+ int i;
+ smb_msleep(100);
+ for (i=0; i<5; i++) {
+ if (receive_getdc_response(ip, domain->name, name)) {
+ namecache_store(name, 0x20, 1, &ip_list);
+ return True;
+ }
+ smb_msleep(500);
+ }
+ }
+
+ /* try node status request */
+
+ if ( name_status_find(domain->name, 0x1c, 0x20, ip, name) ) {
+ namecache_store(name, 0x20, 1, &ip_list);
+ return True;
+ }
+ return False;
+}
+
+/*******************************************************************
+ Retreive a list of IP address for domain controllers. Fill in
+ the dcs[] with results.
+*******************************************************************/
+
+static BOOL get_dcs(TALLOC_CTX *mem_ctx, const struct winbindd_domain *domain,
+ struct dc_name_ip **dcs, int *num_dcs)
+{
+ fstring dcname;
+ struct in_addr ip;
+ struct ip_service *ip_list = NULL;
+ int iplist_size = 0;
+ int i;
+ BOOL is_our_domain;
+ enum security_types sec = (enum security_types)lp_security();
+
+ is_our_domain = strequal(domain->name, lp_workgroup());
+
+ if ( !is_our_domain
+ && get_dc_name_via_netlogon(domain, dcname, &ip)
+ && add_one_dc_unique(mem_ctx, domain->name, dcname, ip, dcs, num_dcs) )
+ {
+ DEBUG(10, ("Retrieved DC %s at %s via netlogon\n",
+ dcname, inet_ntoa(ip)));
+ return True;
+ }
+
+ if (sec == SEC_ADS) {
+ char *sitename = NULL;
+
+ /* We need to make sure we know the local site before
+ doing any DNS queries, as this will restrict the
+ get_sorted_dc_list() call below to only fetching
+ DNS records for the correct site. */
+
+ /* Find any DC to get the site record.
+ We deliberately don't care about the
+ return here. */
+
+ get_dc_name(domain->name, domain->alt_name, dcname, &ip);
+
+ sitename = sitename_fetch(domain->alt_name);
+ if (sitename) {
+
+ /* Do the site-specific AD dns lookup first. */
+ get_sorted_dc_list(domain->alt_name, sitename, &ip_list, &iplist_size, True);
+
+ for ( i=0; i<iplist_size; i++ ) {
+ add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
+ ip_list[i].ip, dcs, num_dcs);
+ }
+
+ SAFE_FREE(ip_list);
+ SAFE_FREE(sitename);
+ iplist_size = 0;
+ }
+
+ /* Now we add DCs from the main AD dns lookup. */
+ get_sorted_dc_list(domain->alt_name, NULL, &ip_list, &iplist_size, True);
+
+ for ( i=0; i<iplist_size; i++ ) {
+ add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
+ ip_list[i].ip, dcs, num_dcs);
+ }
+ }
+
+ /* try standard netbios queries if no ADS */
+
+ if (iplist_size==0) {
+ get_sorted_dc_list(domain->name, NULL, &ip_list, &iplist_size, False);
+ }
+
+ /* FIXME!! this is where we should re-insert the GETDC requests --jerry */
+
+ /* now add to the dc array. We'll wait until the last minute
+ to look up the name of the DC. But we fill in the char* for
+ the ip now in to make the failed connection cache work */
+
+ for ( i=0; i<iplist_size; i++ ) {
+ add_one_dc_unique(mem_ctx, domain->name, inet_ntoa(ip_list[i].ip),
+ ip_list[i].ip, dcs, num_dcs);
+ }
+
+ SAFE_FREE( ip_list );
+
+ return True;
+}
+
+static BOOL find_new_dc(TALLOC_CTX *mem_ctx,
+ const struct winbindd_domain *domain,
+ fstring dcname, struct sockaddr_in *addr, int *fd)
+{
+ struct dc_name_ip *dcs = NULL;
+ int num_dcs = 0;
+
+ const char **dcnames = NULL;
+ int num_dcnames = 0;
+
+ struct sockaddr_in *addrs = NULL;
+ int num_addrs = 0;
+
+ int i, fd_index;
+
+ again:
+ if (!get_dcs(mem_ctx, domain, &dcs, &num_dcs) || (num_dcs == 0))
+ return False;
+
+ for (i=0; i<num_dcs; i++) {
+
+ if (!add_string_to_array(mem_ctx, dcs[i].name,
+ &dcnames, &num_dcnames)) {
+ return False;
+ }
+ if (!add_sockaddr_to_array(mem_ctx, dcs[i].ip, 445,
+ &addrs, &num_addrs)) {
+ return False;
+ }
+
+ if (!add_string_to_array(mem_ctx, dcs[i].name,
+ &dcnames, &num_dcnames)) {
+ return False;
+ }
+ if (!add_sockaddr_to_array(mem_ctx, dcs[i].ip, 139,
+ &addrs, &num_addrs)) {
+ return False;
+ }
+ }
+
+ if ((num_dcnames == 0) || (num_dcnames != num_addrs))
+ return False;
+
+ if ((addrs == NULL) || (dcnames == NULL))
+ return False;
+
+ /* 5 second timeout. */
+ if ( !open_any_socket_out(addrs, num_addrs, 5000, &fd_index, fd) )
+ {
+ for (i=0; i<num_dcs; i++) {
+ DEBUG(10, ("find_new_dc: open_any_socket_out failed for "
+ "domain %s address %s. Error was %s\n",
+ domain->name, inet_ntoa(dcs[i].ip), strerror(errno) ));
+ winbind_add_failed_connection_entry(domain,
+ dcs[i].name, NT_STATUS_UNSUCCESSFUL);
+ }
+ return False;
+ }
+
+ *addr = addrs[fd_index];
+
+ if (*dcnames[fd_index] != '\0' && !is_ipaddress(dcnames[fd_index])) {
+ /* Ok, we've got a name for the DC */
+ fstrcpy(dcname, dcnames[fd_index]);
+ return True;
+ }
+
+ /* Try to figure out the name */
+ if (dcip_to_name( domain, addr->sin_addr, dcname )) {
+ return True;
+ }
+
+ /* We can not continue without the DC's name */
+ winbind_add_failed_connection_entry(domain, dcs[fd_index].name,
+ NT_STATUS_UNSUCCESSFUL);
+ goto again;
+}
+
+static NTSTATUS cm_open_connection(struct winbindd_domain *domain,
+ struct winbindd_cm_conn *new_conn)
+{
+ TALLOC_CTX *mem_ctx;
+ NTSTATUS result;
+ char *saf_servername = saf_fetch( domain->name );
+ int retries;
+
+ if ((mem_ctx = talloc_init("cm_open_connection")) == NULL) {
+ SAFE_FREE(saf_servername);
+ set_domain_offline(domain);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* we have to check the server affinity cache here since
+ later we selecte a DC based on response time and not preference */
+
+ /* Check the negative connection cache
+ before talking to it. It going down may have
+ triggered the reconnection. */
+
+ if ( saf_servername && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, saf_servername))) {
+
+ DEBUG(10,("cm_open_connection: saf_servername is '%s' for domain %s\n",
+ saf_servername, domain->name ));
+
+ /* convert an ip address to a name */
+ if ( is_ipaddress( saf_servername ) ) {
+ fstring saf_name;
+ struct in_addr ip;
+
+ ip = *interpret_addr2( saf_servername );
+ if (dcip_to_name( domain, ip, saf_name )) {
+ fstrcpy( domain->dcname, saf_name );
+ } else {
+ winbind_add_failed_connection_entry(
+ domain, saf_servername,
+ NT_STATUS_UNSUCCESSFUL);
+ }
+ } else {
+ fstrcpy( domain->dcname, saf_servername );
+ }
+
+ SAFE_FREE( saf_servername );
+ }
+
+ for (retries = 0; retries < 3; retries++) {
+
+ int fd = -1;
+ BOOL retry = False;
+
+ result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
+
+ DEBUG(10,("cm_open_connection: dcname is '%s' for domain %s\n",
+ domain->dcname, domain->name ));
+
+ if (*domain->dcname
+ && NT_STATUS_IS_OK(check_negative_conn_cache( domain->name, domain->dcname))
+ && (resolve_name(domain->dcname, &domain->dcaddr.sin_addr, 0x20)))
+ {
+ struct sockaddr_in *addrs = NULL;
+ int num_addrs = 0;
+ int dummy = 0;
+
+ if (!add_sockaddr_to_array(mem_ctx, domain->dcaddr.sin_addr, 445, &addrs, &num_addrs)) {
+ set_domain_offline(domain);
+ talloc_destroy(mem_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+ if (!add_sockaddr_to_array(mem_ctx, domain->dcaddr.sin_addr, 139, &addrs, &num_addrs)) {
+ set_domain_offline(domain);
+ talloc_destroy(mem_ctx);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* 5 second timeout. */
+ if (!open_any_socket_out(addrs, num_addrs, 5000, &dummy, &fd)) {
+ fd = -1;
+ }
+ }
+
+ if ((fd == -1)
+ && !find_new_dc(mem_ctx, domain, domain->dcname, &domain->dcaddr, &fd))
+ {
+ /* This is the one place where we will
+ set the global winbindd offline state
+ to true, if a "WINBINDD_OFFLINE" entry
+ is found in the winbindd cache. */
+ set_global_winbindd_state_offline();
+ break;
+ }
+
+ new_conn->cli = NULL;
+
+ result = cm_prepare_connection(domain, fd, domain->dcname,
+ &new_conn->cli, &retry);
+
+ if (!retry)
+ break;
+ }
+
+ if (NT_STATUS_IS_OK(result)) {
+ if (domain->online == False) {
+ /* We're changing state from offline to online. */
+ set_global_winbindd_state_online();
+ }
+ set_domain_online(domain);
+ } else {
+ /* Ensure we setup the retry handler. */
+ set_domain_offline(domain);
+ }
+
+ talloc_destroy(mem_ctx);
+ return result;
+}
+
+/* Close down all open pipes on a connection. */
+
+void invalidate_cm_connection(struct winbindd_cm_conn *conn)
+{
+ /* We're closing down a possibly dead
+ connection. Don't have impossibly long (10s) timeouts. */
+
+ if (conn->cli) {
+ cli_set_timeout(conn->cli, 1000); /* 1 second. */
+ }
+
+ if (conn->samr_pipe != NULL) {
+ if (!cli_rpc_pipe_close(conn->samr_pipe)) {
+ /* Ok, it must be dead. Drop timeout to 0.5 sec. */
+ if (conn->cli) {
+ cli_set_timeout(conn->cli, 500);
+ }
+ }
+ conn->samr_pipe = NULL;
+ }
+
+ if (conn->lsa_pipe != NULL) {
+ if (!cli_rpc_pipe_close(conn->lsa_pipe)) {
+ /* Ok, it must be dead. Drop timeout to 0.5 sec. */
+ if (conn->cli) {
+ cli_set_timeout(conn->cli, 500);
+ }
+ }
+ conn->lsa_pipe = NULL;
+ }
+
+ if (conn->netlogon_pipe != NULL) {
+ if (!cli_rpc_pipe_close(conn->netlogon_pipe)) {
+ /* Ok, it must be dead. Drop timeout to 0.5 sec. */
+ if (conn->cli) {
+ cli_set_timeout(conn->cli, 500);
+ }
+ }
+ conn->netlogon_pipe = NULL;
+ }
+
+ if (conn->cli) {
+ cli_shutdown(conn->cli);
+ }
+
+ conn->cli = NULL;
+}
+
+void close_conns_after_fork(void)
+{
+ struct winbindd_domain *domain;
+
+ for (domain = domain_list(); domain; domain = domain->next) {
+ if (domain->conn.cli == NULL)
+ continue;
+
+ if (domain->conn.cli->fd == -1)
+ continue;
+
+ close(domain->conn.cli->fd);
+ domain->conn.cli->fd = -1;
+ }
+}
+
+static BOOL connection_ok(struct winbindd_domain *domain)
+{
+ if (domain->conn.cli == NULL) {
+ DEBUG(8, ("connection_ok: Connection to %s for domain %s has NULL "
+ "cli!\n", domain->dcname, domain->name));
+ return False;
+ }
+
+ if (!domain->conn.cli->initialised) {
+ DEBUG(3, ("connection_ok: Connection to %s for domain %s was never "
+ "initialised!\n", domain->dcname, domain->name));
+ return False;
+ }
+
+ if (domain->conn.cli->fd == -1) {
+ DEBUG(3, ("connection_ok: Connection to %s for domain %s has died or was "
+ "never started (fd == -1)\n",
+ domain->dcname, domain->name));
+ return False;
+ }
+
+ if (domain->online == False) {
+ DEBUG(3, ("connection_ok: Domain %s is offline\n", domain->name));
+ return False;
+ }
+
+ return True;
+}
+
+/* Initialize a new connection up to the RPC BIND.
+ Bypass online status check so always does network calls. */
+
+static NTSTATUS init_dc_connection_network(struct winbindd_domain *domain)
+{
+ NTSTATUS result;
+
+ /* Internal connections never use the network. */
+ if (domain->internal) {
+ domain->initialized = True;
+ return NT_STATUS_OK;
+ }
+
+ if (connection_ok(domain)) {
+ if (!domain->initialized) {
+ set_dc_type_and_flags(domain);
+ }
+ return NT_STATUS_OK;
+ }
+
+ invalidate_cm_connection(&domain->conn);
+
+ result = cm_open_connection(domain, &domain->conn);
+
+ if (NT_STATUS_IS_OK(result) && !domain->initialized) {
+ set_dc_type_and_flags(domain);
+ }
+
+ return result;
+}
+
+NTSTATUS init_dc_connection(struct winbindd_domain *domain)
+{
+ if (domain->initialized && !domain->online) {
+ /* We check for online status elsewhere. */
+ return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
+ }
+
+ return init_dc_connection_network(domain);
+}
+
+/******************************************************************************
+ Set the trust flags (direction and forest location) for a domain
+******************************************************************************/
+
+static BOOL set_dc_type_and_flags_trustinfo( struct winbindd_domain *domain )
+{
+ struct winbindd_domain *our_domain;
+ NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+ struct ds_domain_trust *domains = NULL;
+ int count = 0;
+ int i;
+ uint32 flags = (DS_DOMAIN_IN_FOREST |
+ DS_DOMAIN_DIRECT_OUTBOUND |
+ DS_DOMAIN_DIRECT_INBOUND);
+ struct rpc_pipe_client *cli;
+ TALLOC_CTX *mem_ctx = NULL;
+
+ DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s\n", domain->name ));
+
+ /* Our primary domain doesn't need to worry about trust flags.
+ Force it to go through the network setup */
+ if ( domain->primary ) {
+ return False;
+ }
+
+ our_domain = find_our_domain();
+
+ if ( !connection_ok(our_domain) ) {
+ DEBUG(3,("set_dc_type_and_flags_trustinfo: No connection to our domain!\n"));
+ return False;
+ }
+
+ /* This won't work unless our domain is AD */
+
+ if ( !our_domain->active_directory ) {
+ return False;
+ }
+
+ /* Use DsEnumerateDomainTrusts to get us the trust direction
+ and type */
+
+ result = cm_connect_netlogon(our_domain, &cli);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(5, ("set_dc_type_and_flags_trustinfo: Could not open "
+ "a connection to %s for PIPE_NETLOGON (%s)\n",
+ domain->name, nt_errstr(result)));
+ return False;
+ }
+
+ if ( (mem_ctx = talloc_init("set_dc_type_and_flags_trustinfo")) == NULL ) {
+ DEBUG(0,("set_dc_type_and_flags_trustinfo: talloc_init() failed!\n"));
+ return False;
+ }
+
+ result = rpccli_ds_enum_domain_trusts(cli, mem_ctx,
+ cli->cli->desthost,
+ flags, &domains,
+ (unsigned int *)&count);
+
+ /* Now find the domain name and get the flags */
+
+ for ( i=0; i<count; i++ ) {
+ if ( strequal( domain->name, domains[i].netbios_domain ) ) {
+ domain->domain_flags = domains[i].flags;
+ domain->domain_type = domains[i].trust_type;
+ domain->domain_trust_attribs = domains[i].trust_attributes;
+
+ if ( domain->domain_type == DS_DOMAIN_TRUST_TYPE_UPLEVEL )
+ domain->active_directory = True;
+
+ /* This flag is only set if the domain is *our*
+ primary domain and the primary domain is in
+ native mode */
+
+ domain->native_mode = (domain->domain_flags & DS_DOMAIN_NATIVE_MODE);
+
+ DEBUG(5, ("set_dc_type_and_flags_trustinfo: domain %s is %sin "
+ "native mode.\n", domain->name,
+ domain->native_mode ? "" : "NOT "));
+
+ DEBUG(5,("set_dc_type_and_flags_trustinfo: domain %s is %s"
+ "running active directory.\n", domain->name,
+ domain->active_directory ? "" : "NOT "));
+
+
+ domain->initialized = True;
+
+ if ( !winbindd_can_contact_domain( domain) )
+ domain->internal = True;
+
+ break;
+ }
+ }
+
+ talloc_destroy( mem_ctx );
+
+ return domain->initialized;
+}
+
+/******************************************************************************
+ We can 'sense' certain things about the DC by it's replies to certain
+ questions.
+
+ This tells us if this particular remote server is Active Directory, and if it
+ is native mode.
+******************************************************************************/
+
+static void set_dc_type_and_flags_connect( struct winbindd_domain *domain )
+{
+ NTSTATUS result;
+ DS_DOMINFO_CTR ctr;
+ TALLOC_CTX *mem_ctx = NULL;
+ struct rpc_pipe_client *cli;
+ POLICY_HND pol;
+
+ char *domain_name = NULL;
+ char *dns_name = NULL;
+ char *forest_name = NULL;
+ DOM_SID *dom_sid = NULL;
+
+ ZERO_STRUCT( ctr );
+
+ if (!connection_ok(domain)) {
+ return;
+ }
+
+ DEBUG(5, ("set_dc_type_and_flags_connect: domain %s\n", domain->name ));
+
+ cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC_DS,
+ &result);
+
+ if (cli == NULL) {
+ DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
+ "PI_LSARPC_DS on domain %s: (%s)\n",
+ domain->name, nt_errstr(result)));
+
+ /* if this is just a non-AD domain we need to continue
+ * identifying so that we can in the end return with
+ * domain->initialized = True - gd */
+
+ goto no_lsarpc_ds;
+ }
+
+ result = rpccli_ds_getprimarydominfo(cli, cli->cli->mem_ctx,
+ DsRolePrimaryDomainInfoBasic,
+ &ctr);
+ cli_rpc_pipe_close(cli);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(5, ("set_dc_type_and_flags_connect: rpccli_ds_getprimarydominfo "
+ "on domain %s failed: (%s)\n",
+ domain->name, nt_errstr(result)));
+ return;
+ }
+
+ if ((ctr.basic->flags & DSROLE_PRIMARY_DS_RUNNING) &&
+ !(ctr.basic->flags & DSROLE_PRIMARY_DS_MIXED_MODE)) {
+ domain->native_mode = True;
+ } else {
+ domain->native_mode = False;
+ }
+
+no_lsarpc_ds:
+ cli = cli_rpc_pipe_open_noauth(domain->conn.cli, PI_LSARPC, &result);
+
+ if (cli == NULL) {
+ DEBUG(5, ("set_dc_type_and_flags_connect: Could not bind to "
+ "PI_LSARPC on domain %s: (%s)\n",
+ domain->name, nt_errstr(result)));
+ cli_rpc_pipe_close(cli);
+ return;
+ }
+
+ mem_ctx = talloc_init("set_dc_type_and_flags on domain %s\n",
+ domain->name);
+ if (!mem_ctx) {
+ DEBUG(1, ("set_dc_type_and_flags_connect: talloc_init() failed\n"));
+ cli_rpc_pipe_close(cli);
+ return;
+ }
+
+ result = rpccli_lsa_open_policy2(cli, mem_ctx, True,
+ SEC_RIGHTS_MAXIMUM_ALLOWED, &pol);
+
+ if (NT_STATUS_IS_OK(result)) {
+ /* This particular query is exactly what Win2k clients use
+ to determine that the DC is active directory */
+ result = rpccli_lsa_query_info_policy2(cli, mem_ctx, &pol,
+ 12, &domain_name,
+ &dns_name, &forest_name,
+ NULL, &dom_sid);
+ }
+
+ if (NT_STATUS_IS_OK(result)) {
+ domain->active_directory = True;
+
+ if (domain_name)
+ fstrcpy(domain->name, domain_name);
+
+ if (dns_name)
+ fstrcpy(domain->alt_name, dns_name);
+
+ if ( forest_name )
+ fstrcpy(domain->forest_name, forest_name);
+
+ if (dom_sid)
+ sid_copy(&domain->sid, dom_sid);
+ } else {
+ domain->active_directory = False;
+
+ result = rpccli_lsa_open_policy(cli, mem_ctx, True,
+ SEC_RIGHTS_MAXIMUM_ALLOWED,
+ &pol);
+
+ if (!NT_STATUS_IS_OK(result))
+ goto done;
+
+ result = rpccli_lsa_query_info_policy(cli, mem_ctx,
+ &pol, 5, &domain_name,
+ &dom_sid);
+
+ if (NT_STATUS_IS_OK(result)) {
+ if (domain_name)
+ fstrcpy(domain->name, domain_name);
+
+ if (dom_sid)
+ sid_copy(&domain->sid, dom_sid);
+ }
+ }
+done:
+
+ DEBUG(5, ("set_dc_type_and_flags_connect: domain %s is %sin native mode.\n",
+ domain->name, domain->native_mode ? "" : "NOT "));
+
+ DEBUG(5,("set_dc_type_and_flags_connect: domain %s is %srunning active directory.\n",
+ domain->name, domain->active_directory ? "" : "NOT "));
+
+ cli_rpc_pipe_close(cli);
+
+ talloc_destroy(mem_ctx);
+
+ domain->initialized = True;
+}
+
+/**********************************************************************
+ Set the domain_flags (trust attributes, domain operating modes, etc...
+***********************************************************************/
+
+static void set_dc_type_and_flags( struct winbindd_domain *domain )
+{
+ /* we always have to contact our primary domain */
+
+ if ( domain->primary ) {
+ DEBUG(10,("set_dc_type_and_flags: setting up flags for "
+ "primary domain\n"));
+ set_dc_type_and_flags_connect( domain );
+ return;
+ }
+
+ /* Use our DC to get the information if possible */
+
+ if ( !set_dc_type_and_flags_trustinfo( domain ) ) {
+ /* Otherwise, fallback to contacting the
+ domain directly */
+ set_dc_type_and_flags_connect( domain );
+ }
+
+ return;
+}
+
+
+
+/**********************************************************************
+***********************************************************************/
+
+static BOOL cm_get_schannel_dcinfo(struct winbindd_domain *domain,
+ struct dcinfo **ppdc)
+{
+ NTSTATUS result;
+ struct rpc_pipe_client *netlogon_pipe;
+
+ if (lp_client_schannel() == False) {
+ return False;
+ }
+
+ result = cm_connect_netlogon(domain, &netlogon_pipe);
+ if (!NT_STATUS_IS_OK(result)) {
+ return False;
+ }
+
+ /* Return a pointer to the struct dcinfo from the
+ netlogon pipe. */
+
+ *ppdc = domain->conn.netlogon_pipe->dc;
+ return True;
+}
+
+NTSTATUS cm_connect_sam(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
+ struct rpc_pipe_client **cli, POLICY_HND *sam_handle)
+{
+ struct winbindd_cm_conn *conn;
+ NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+ fstring conn_pwd;
+ struct dcinfo *p_dcinfo;
+
+ result = init_dc_connection(domain);
+ if (!NT_STATUS_IS_OK(result)) {
+ return result;
+ }
+
+ conn = &domain->conn;
+
+ if (conn->samr_pipe != NULL) {
+ goto done;
+ }
+
+ /*
+ * No SAMR pipe yet. Attempt to get an NTLMSSP SPNEGO authenticated
+ * sign and sealed pipe using the machine account password by
+ * preference. If we can't - try schannel, if that fails, try
+ * anonymous.
+ */
+
+ pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
+ if ((conn->cli->user_name[0] == '\0') ||
+ (conn->cli->domain[0] == '\0') ||
+ (conn_pwd[0] == '\0')) {
+ DEBUG(10, ("cm_connect_sam: No no user available for "
+ "domain %s, trying schannel\n", conn->cli->domain));
+ goto schannel;
+ }
+
+ /* We have an authenticated connection. Use a NTLMSSP SPNEGO
+ authenticated SAMR pipe with sign & seal. */
+ conn->samr_pipe =
+ cli_rpc_pipe_open_spnego_ntlmssp(conn->cli, PI_SAMR,
+ PIPE_AUTH_LEVEL_PRIVACY,
+ conn->cli->domain,
+ conn->cli->user_name,
+ conn_pwd, &result);
+
+ if (conn->samr_pipe == NULL) {
+ DEBUG(10,("cm_connect_sam: failed to connect to SAMR "
+ "pipe for domain %s using NTLMSSP "
+ "authenticated pipe: user %s\\%s. Error was "
+ "%s\n", domain->name, conn->cli->domain,
+ conn->cli->user_name, nt_errstr(result)));
+ goto schannel;
+ }
+
+ DEBUG(10,("cm_connect_sam: connected to SAMR pipe for "
+ "domain %s using NTLMSSP authenticated "
+ "pipe: user %s\\%s\n", domain->name,
+ conn->cli->domain, conn->cli->user_name ));
+
+ result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
+ SEC_RIGHTS_MAXIMUM_ALLOWED,
+ &conn->sam_connect_handle);
+ if (NT_STATUS_IS_OK(result)) {
+ goto open_domain;
+ }
+ DEBUG(10,("cm_connect_sam: ntlmssp-sealed rpccli_samr_connect "
+ "failed for domain %s, error was %s. Trying schannel\n",
+ domain->name, nt_errstr(result) ));
+ cli_rpc_pipe_close(conn->samr_pipe);
+
+ schannel:
+
+ /* Fall back to schannel if it's a W2K pre-SP1 box. */
+
+ if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
+ /* If this call fails - conn->cli can now be NULL ! */
+ DEBUG(10, ("cm_connect_sam: Could not get schannel auth info "
+ "for domain %s, trying anon\n", domain->name));
+ goto anonymous;
+ }
+ conn->samr_pipe = cli_rpc_pipe_open_schannel_with_key
+ (conn->cli, PI_SAMR, PIPE_AUTH_LEVEL_PRIVACY,
+ domain->name, p_dcinfo, &result);
+
+ if (conn->samr_pipe == NULL) {
+ DEBUG(10,("cm_connect_sam: failed to connect to SAMR pipe for "
+ "domain %s using schannel. Error was %s\n",
+ domain->name, nt_errstr(result) ));
+ goto anonymous;
+ }
+ DEBUG(10,("cm_connect_sam: connected to SAMR pipe for domain %s using "
+ "schannel.\n", domain->name ));
+
+ result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
+ SEC_RIGHTS_MAXIMUM_ALLOWED,
+ &conn->sam_connect_handle);
+ if (NT_STATUS_IS_OK(result)) {
+ goto open_domain;
+ }
+ DEBUG(10,("cm_connect_sam: schannel-sealed rpccli_samr_connect failed "
+ "for domain %s, error was %s. Trying anonymous\n",
+ domain->name, nt_errstr(result) ));
+ cli_rpc_pipe_close(conn->samr_pipe);
+
+ anonymous:
+
+ /* Finally fall back to anonymous. */
+ conn->samr_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_SAMR,
+ &result);
+
+ if (conn->samr_pipe == NULL) {
+ result = NT_STATUS_PIPE_NOT_AVAILABLE;
+ goto done;
+ }
+
+ result = rpccli_samr_connect(conn->samr_pipe, mem_ctx,
+ SEC_RIGHTS_MAXIMUM_ALLOWED,
+ &conn->sam_connect_handle);
+ if (!NT_STATUS_IS_OK(result)) {
+ DEBUG(10,("cm_connect_sam: rpccli_samr_connect failed "
+ "for domain %s Error was %s\n",
+ domain->name, nt_errstr(result) ));
+ goto done;
+ }
+
+ open_domain:
+ result = rpccli_samr_open_domain(conn->samr_pipe,
+ mem_ctx,
+ &conn->sam_connect_handle,
+ SEC_RIGHTS_MAXIMUM_ALLOWED,
+ &domain->sid,
+ &conn->sam_domain_handle);
+
+ done:
+
+ if (!NT_STATUS_IS_OK(result)) {
+ invalidate_cm_connection(conn);
+ return result;
+ }
+
+ *cli = conn->samr_pipe;
+ *sam_handle = conn->sam_domain_handle;
+ return result;
+}
+
+NTSTATUS cm_connect_lsa(struct winbindd_domain *domain, TALLOC_CTX *mem_ctx,
+ struct rpc_pipe_client **cli, POLICY_HND *lsa_policy)
+{
+ struct winbindd_cm_conn *conn;
+ NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
+ fstring conn_pwd;
+ struct dcinfo *p_dcinfo;
+
+ result = init_dc_connection(domain);
+ if (!NT_STATUS_IS_OK(result))
+ return result;
+
+ conn = &domain->conn;
+
+ if (conn->lsa_pipe != NULL) {
+ goto done;
+ }
+
+ pwd_get_cleartext(&conn->cli->pwd, conn_pwd);
+ if ((conn->cli->user_name[0] == '\0') ||
+ (conn->cli->domain[0] == '\0') ||
+ (conn_pwd[0] == '\0')) {
+ DEBUG(10, ("cm_connect_lsa: No no user available for "
+ "domain %s, trying schannel\n", conn->cli->domain));
+ goto schannel;
+ }
+
+ /* We have an authenticated connection. Use a NTLMSSP SPNEGO
+ * authenticated LSA pipe with sign & seal. */
+ conn->lsa_pipe = cli_rpc_pipe_open_spnego_ntlmssp
+ (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
+ conn->cli->domain, conn->cli->user_name, conn_pwd, &result);
+
+ if (conn->lsa_pipe == NULL) {
+ DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
+ "domain %s using NTLMSSP authenticated pipe: user "
+ "%s\\%s. Error was %s. Trying schannel.\n",
+ domain->name, conn->cli->domain,
+ conn->cli->user_name, nt_errstr(result)));
+ goto schannel;
+ }
+
+ DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
+ "NTLMSSP authenticated pipe: user %s\\%s\n",
+ domain->name, conn->cli->domain, conn->cli->user_name ));
+
+ result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
+ SEC_RIGHTS_MAXIMUM_ALLOWED,
+ &conn->lsa_policy);
+ if (NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+
+ DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
+ "schannel\n"));
+
+ cli_rpc_pipe_close(conn->lsa_pipe);
+
+ schannel:
+
+ /* Fall back to schannel if it's a W2K pre-SP1 box. */
+
+ if (!cm_get_schannel_dcinfo(domain, &p_dcinfo)) {
+ /* If this call fails - conn->cli can now be NULL ! */
+ DEBUG(10, ("cm_connect_lsa: Could not get schannel auth info "
+ "for domain %s, trying anon\n", domain->name));
+ goto anonymous;
+ }
+ conn->lsa_pipe = cli_rpc_pipe_open_schannel_with_key
+ (conn->cli, PI_LSARPC, PIPE_AUTH_LEVEL_PRIVACY,
+ domain->name, p_dcinfo, &result);
+
+ if (conn->lsa_pipe == NULL) {
+ DEBUG(10,("cm_connect_lsa: failed to connect to LSA pipe for "
+ "domain %s using schannel. Error was %s\n",
+ domain->name, nt_errstr(result) ));
+ goto anonymous;
+ }
+ DEBUG(10,("cm_connect_lsa: connected to LSA pipe for domain %s using "
+ "schannel.\n", domain->name ));
+
+ result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
+ SEC_RIGHTS_MAXIMUM_ALLOWED,
+ &conn->lsa_policy);
+ if (NT_STATUS_IS_OK(result)) {
+ goto done;
+ }
+
+ DEBUG(10,("cm_connect_lsa: rpccli_lsa_open_policy failed, trying "
+ "anonymous\n"));
+
+ cli_rpc_pipe_close(conn->lsa_pipe);
+
+ anonymous:
+
+ conn->lsa_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_LSARPC,
+ &result);
+ if (conn->lsa_pipe == NULL) {
+ result = NT_STATUS_PIPE_NOT_AVAILABLE;
+ goto done;
+ }
+
+ result = rpccli_lsa_open_policy(conn->lsa_pipe, mem_ctx, True,
+ SEC_RIGHTS_MAXIMUM_ALLOWED,
+ &conn->lsa_policy);
+ done:
+ if (!NT_STATUS_IS_OK(result)) {
+ invalidate_cm_connection(conn);
+ return result;
+ }
+
+ *cli = conn->lsa_pipe;
+ *lsa_policy = conn->lsa_policy;
+ return result;
+}
+
+/****************************************************************************
+ Open the netlogon pipe to this DC. Use schannel if specified in client conf.
+ session key stored in conn->netlogon_pipe->dc->sess_key.
+****************************************************************************/
+
+NTSTATUS cm_connect_netlogon(struct winbindd_domain *domain,
+ struct rpc_pipe_client **cli)
+{
+ struct winbindd_cm_conn *conn;
+ NTSTATUS result;
+
+ uint32 neg_flags = NETLOGON_NEG_AUTH2_FLAGS;
+ uint8 mach_pwd[16];
+ uint32 sec_chan_type;
+ const char *account_name;
+ struct rpc_pipe_client *netlogon_pipe = NULL;
+
+ *cli = NULL;
+
+ result = init_dc_connection(domain);
+ if (!NT_STATUS_IS_OK(result)) {
+ return result;
+ }
+
+ conn = &domain->conn;
+
+ if (conn->netlogon_pipe != NULL) {
+ *cli = conn->netlogon_pipe;
+ return NT_STATUS_OK;
+ }
+
+ if (domain->primary && !get_trust_pw(domain->name, mach_pwd, &sec_chan_type)) {
+ return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
+ }
+
+ netlogon_pipe = cli_rpc_pipe_open_noauth(conn->cli, PI_NETLOGON,
+ &result);
+ if (netlogon_pipe == NULL) {
+ return result;
+ }
+
+ if ( !domain->primary ) {
+ /* Clear the schannel request bit and drop down */
+ neg_flags &= ~NETLOGON_NEG_SCHANNEL;
+ goto no_schannel;
+ }
+
+ if (lp_client_schannel() != False) {
+ neg_flags |= NETLOGON_NEG_SCHANNEL;
+ }
+
+ /* if we are a DC and this is a trusted domain, then we need to use our
+ domain name in the net_req_auth2() request */
+
+ if ( IS_DC
+ && !strequal(domain->name, lp_workgroup())
+ && lp_allow_trusted_domains() )
+ {
+ account_name = lp_workgroup();
+ } else {
+ account_name = domain->primary ?
+ global_myname() : domain->name;
+ }
+
+ if (account_name == NULL) {
+ cli_rpc_pipe_close(netlogon_pipe);
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ result = rpccli_netlogon_setup_creds(
+ netlogon_pipe,
+ domain->dcname, /* server name. */
+ domain->name, /* domain name */
+ global_myname(), /* client name */
+ account_name, /* machine account */
+ mach_pwd, /* machine password */
+ sec_chan_type, /* from get_trust_pw */
+ &neg_flags);
+
+ if (!NT_STATUS_IS_OK(result)) {
+ cli_rpc_pipe_close(netlogon_pipe);
+ return result;
+ }
+
+ if ((lp_client_schannel() == True) &&
+ ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
+ DEBUG(3, ("Server did not offer schannel\n"));
+ cli_rpc_pipe_close(netlogon_pipe);
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ no_schannel:
+ if ((lp_client_schannel() == False) ||
+ ((neg_flags & NETLOGON_NEG_SCHANNEL) == 0)) {
+
+ /*
+ * NetSamLogonEx only works for schannel
+ */
+ domain->can_do_samlogon_ex = False;
+
+ /* We're done - just keep the existing connection to NETLOGON
+ * open */
+ conn->netlogon_pipe = netlogon_pipe;
+ *cli = conn->netlogon_pipe;
+ return NT_STATUS_OK;
+ }
+
+ /* Using the credentials from the first pipe, open a signed and sealed
+ second netlogon pipe. The session key is stored in the schannel
+ part of the new pipe auth struct.
+ */
+
+ conn->netlogon_pipe =
+ cli_rpc_pipe_open_schannel_with_key(conn->cli,
+ PI_NETLOGON,
+ PIPE_AUTH_LEVEL_PRIVACY,
+ domain->name,
+ netlogon_pipe->dc,
+ &result);
+
+ /* We can now close the initial netlogon pipe. */
+ cli_rpc_pipe_close(netlogon_pipe);
+
+ if (conn->netlogon_pipe == NULL) {
+ DEBUG(3, ("Could not open schannel'ed NETLOGON pipe. Error "
+ "was %s\n", nt_errstr(result)));
+
+ /* make sure we return something besides OK */
+ return !NT_STATUS_IS_OK(result) ? result : NT_STATUS_PIPE_NOT_AVAILABLE;
+ }
+
+ /*
+ * Try NetSamLogonEx for AD domains
+ */
+ domain->can_do_samlogon_ex = domain->active_directory;
+
+ *cli = conn->netlogon_pipe;
+ return NT_STATUS_OK;
}
git.samba.org / tprouty / samba.git / blobdiff