/*
- Unix SMB/Netbios implementation.
- Version 1.9.
+ Unix SMB/CIFS implementation.
NBT netbios routines and daemon - version 2
Copyright (C) Andrew Tridgell 1994-1998
+ Copyright (C) Jeremy Allison 1997-2002
+ Copyright (C) Jelmer Vernooij 2002,2003 (Conversion to popt)
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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- Revision History:
-
- 14 jan 96: lkcl@pires.co.uk
- added multiple workgroup domain master support
-
*/
#include "includes.h"
-extern int DEBUGLEVEL;
-
-extern pstring debugf;
-pstring servicesf = CONFIGFILE;
-
int ClientNMB = -1;
int ClientDGRAM = -1;
int global_nmb_port = -1;
-static pstring host_file;
-extern pstring global_myname;
-extern fstring global_myworkgroup;
-extern char **my_netbios_names;
-
+extern BOOL rescan_listen_set;
+extern struct in_addr loopback_ip;
extern BOOL global_in_nmbd;
+extern BOOL override_logfile;
+
/* are we running as a daemon ? */
-static BOOL is_daemon = False;
+static BOOL is_daemon;
+
+/* fork or run in foreground ? */
+static BOOL Fork = True;
+
+/* log to standard output ? */
+static BOOL log_stdout;
/* have we found LanMan clients yet? */
BOOL found_lm_clients = False;
time_t StartupTime = 0;
-extern struct in_addr ipzero;
-
/**************************************************************************** **
- catch a sigterm
+ Handle a SIGTERM in band.
**************************************************************************** */
-static void sig_term(int sig)
+
+static void terminate(void)
{
- BlockSignals(True,SIGTERM);
-
- DEBUG(0,("Got SIGTERM: going down...\n"));
+ DEBUG(0,("Got SIGTERM: going down...\n"));
- /* Write out wins.dat file if samba is a WINS server */
- wins_write_database(False);
+ /* Write out wins.dat file if samba is a WINS server */
+ wins_write_database(0,False);
- /* Remove all SELF registered names. */
- release_my_names();
+ /* Remove all SELF registered names from WINS */
+ release_wins_names();
- /* Announce all server entries as 0 time-to-live, 0 type. */
- announce_my_servers_removed();
+ /* Announce all server entries as 0 time-to-live, 0 type. */
+ announce_my_servers_removed();
- /* If there was an async dns child - kill it. */
- kill_async_dns_child();
+ /* If there was an async dns child - kill it. */
+ kill_async_dns_child();
- exit(0);
-
-} /* sig_term */
+ exit(0);
+}
/**************************************************************************** **
- catch a sighup
+ Handle a SHUTDOWN message from smbcontrol.
**************************************************************************** */
-static VOLATILE sig_atomic_t reload_after_sighup = False;
-static void sig_hup(int sig)
+static void nmbd_terminate(int msg_type, struct process_id src,
+ void *buf, size_t len, void *private_data)
{
- BlockSignals( True, SIGHUP );
-
- DEBUG( 0, ( "Got SIGHUP dumping debug info.\n" ) );
-
- write_browse_list( 0, True );
-
- dump_all_namelists();
-
- reload_after_sighup = True;
+ terminate();
+}
- BlockSignals(False,SIGHUP);
+/**************************************************************************** **
+ Catch a SIGTERM signal.
+ **************************************************************************** */
-} /* sig_hup */
+static SIG_ATOMIC_T got_sig_term;
+static void sig_term(int sig)
+{
+ got_sig_term = 1;
+ sys_select_signal(SIGTERM);
+}
-#if DUMP_CORE
/**************************************************************************** **
- prepare to dump a core file - carefully!
+ Catch a SIGHUP signal.
**************************************************************************** */
-static BOOL dump_core(void)
-{
- char *p;
- pstring dname;
- pstrcpy( dname, debugf );
- if ((p=strrchr(dname,'/')))
- *p=0;
- pstrcat( dname, "/corefiles" );
- mkdir( dname, 0700 );
- sys_chown( dname, getuid(), getgid() );
- chmod( dname, 0700 );
- if ( chdir(dname) )
- return( False );
- umask( ~(0700) );
-
-#ifdef HAVE_GETRLIMIT
-#ifdef RLIMIT_CORE
- {
- struct rlimit rlp;
- getrlimit( RLIMIT_CORE, &rlp );
- rlp.rlim_cur = MAX( 4*1024*1024, rlp.rlim_cur );
- setrlimit( RLIMIT_CORE, &rlp );
- getrlimit( RLIMIT_CORE, &rlp );
- DEBUG( 3, ( "Core limits now %d %d\n", (int)rlp.rlim_cur, (int)rlp.rlim_max ) );
- }
-#endif
-#endif
-
- DEBUG(0,("Dumping core in %s\n",dname));
- abort();
- return( True );
-} /* dump_core */
-#endif
+static SIG_ATOMIC_T reload_after_sighup;
+static void sig_hup(int sig)
+{
+ reload_after_sighup = 1;
+ sys_select_signal(SIGHUP);
+}
/**************************************************************************** **
- possibly continue after a fault
+ Possibly continue after a fault.
**************************************************************************** */
+
static void fault_continue(void)
{
-#if DUMP_CORE
- dump_core();
-#endif
-} /* fault_continue */
+ dump_core();
+}
/**************************************************************************** **
- expire old names from the namelist and server list
+ Expire old names from the namelist and server list.
**************************************************************************** */
+
static void expire_names_and_servers(time_t t)
{
- static time_t lastrun = 0;
+ static time_t lastrun = 0;
- if ( !lastrun )
- lastrun = t;
- if ( t < (lastrun + 5) )
- return;
- lastrun = t;
-
- /*
- * Expire any timed out names on all the broadcast
- * subnets and those registered with the WINS server.
- * (nmbd_namelistdb.c)
- */
- expire_names(t);
-
- /*
- * Go through all the broadcast subnets and for each
- * workgroup known on that subnet remove any expired
- * server names. If a workgroup has an empty serverlist
- * and has itself timed out then remove the workgroup.
- * (nmbd_workgroupdb.c)
- */
- expire_workgroups_and_servers(t);
-} /* expire_names_and_servers */
+ if ( !lastrun )
+ lastrun = t;
+ if ( t < (lastrun + 5) )
+ return;
+ lastrun = t;
+ /*
+ * Expire any timed out names on all the broadcast
+ * subnets and those registered with the WINS server.
+ * (nmbd_namelistdb.c)
+ */
+
+ expire_names(t);
+
+ /*
+ * Go through all the broadcast subnets and for each
+ * workgroup known on that subnet remove any expired
+ * server names. If a workgroup has an empty serverlist
+ * and has itself timed out then remove the workgroup.
+ * (nmbd_workgroupdb.c)
+ */
+
+ expire_workgroups_and_servers(t);
+}
/************************************************************************** **
-reload the list of network interfaces
+ Reload the list of network interfaces.
************************************************************************** */
+
static BOOL reload_interfaces(time_t t)
{
static time_t lastt;
int n;
struct subnet_record *subrec;
- extern BOOL rescan_listen_set;
- extern struct in_addr loopback_ip;
if (t && ((t - lastt) < NMBD_INTERFACES_RELOAD)) return False;
lastt = t;
for (n=iface_count() - 1; n >= 0; n--) {
struct interface *iface = get_interface(n);
+ if (!iface) {
+ DEBUG(2,("reload_interfaces: failed to get interface %d\n", n));
+ continue;
+ }
+
/*
* We don't want to add a loopback interface, in case
* someone has added 127.0.0.1 for smbd, nmbd needs to
DEBUG(2,("Found new interface %s\n",
inet_ntoa(iface->ip)));
subrec = make_normal_subnet(iface);
- if (subrec) register_my_workgroup_one_subnet(subrec);
+ if (subrec)
+ register_my_workgroup_one_subnet(subrec);
}
}
return False;
}
-
-
/**************************************************************************** **
- reload the services file
+ Reload the services file.
**************************************************************************** */
+
static BOOL reload_nmbd_services(BOOL test)
{
- BOOL ret;
- extern fstring remote_machine;
-
- fstrcpy( remote_machine, "nmbd" );
-
- if ( lp_loaded() )
- {
- pstring fname;
- pstrcpy( fname,lp_configfile());
- if (file_exist(fname,NULL) && !strcsequal(fname,servicesf))
- {
- pstrcpy(servicesf,fname);
- test = False;
- }
- }
-
- if ( test && !lp_file_list_changed() )
- return(True);
-
- ret = lp_load( servicesf, True , False, False);
-
- /* perhaps the config filename is now set */
- if ( !test )
- {
- DEBUG( 3, ( "services not loaded\n" ) );
- reload_nmbd_services( True );
- }
-
- /* Do a sanity check for a misconfigured nmbd */
- if( lp_wins_support() && *lp_wins_server() )
- {
- DEBUG(0,("ERROR: both 'wins support = true' and 'wins server = <server>' \
-cannot be set in the smb.conf file. nmbd aborting.\n"));
- exit(10);
- }
-
- return(ret);
-} /* reload_nmbd_services */
+ BOOL ret;
+
+ set_remote_machine_name("nmbd", False);
+
+ if ( lp_loaded() ) {
+ pstring fname;
+ pstrcpy( fname,lp_configfile());
+ if (file_exist(fname,NULL) && !strcsequal(fname,dyn_CONFIGFILE)) {
+ pstrcpy(dyn_CONFIGFILE,fname);
+ test = False;
+ }
+ }
+
+ if ( test && !lp_file_list_changed() )
+ return(True);
+
+ ret = lp_load( dyn_CONFIGFILE, True , False, False, True);
+
+ /* perhaps the config filename is now set */
+ if ( !test ) {
+ DEBUG( 3, ( "services not loaded\n" ) );
+ reload_nmbd_services( True );
+ }
+
+ return(ret);
+}
/**************************************************************************** **
- The main select loop.
+ * React on 'smbcontrol nmbd reload-config' in the same way as to SIGHUP
+ * We use buf here to return BOOL result to process() when reload_interfaces()
+ * detects that there are no subnets.
**************************************************************************** */
-static void process(void)
+
+static void msg_reload_nmbd_services(int msg_type, struct process_id src,
+ void *buf, size_t len, void *private_data)
{
- BOOL run_election;
-
- while( True )
- {
- time_t t = time(NULL);
-
- /* check for internal messages */
- message_dispatch();
-
- /*
- * Check all broadcast subnets to see if
- * we need to run an election on any of them.
- * (nmbd_elections.c)
- */
- run_election = check_elections();
-
- /*
- * Read incoming UDP packets.
- * (nmbd_packets.c)
- */
- if(listen_for_packets(run_election))
- return;
-
- /*
- * Process all incoming packets
- * read above. This calls the success and
- * failure functions registered when response
- * packets arrrive, and also deals with request
- * packets from other sources.
- * (nmbd_packets.c)
- */
- run_packet_queue();
-
- /*
- * Run any elections - initiate becoming
- * a local master browser if we have won.
- * (nmbd_elections.c)
- */
- run_elections(t);
-
- /*
- * Send out any broadcast announcements
- * of our server names. This also announces
- * the workgroup name if we are a local
- * master browser.
- * (nmbd_sendannounce.c)
- */
- announce_my_server_names(t);
-
- /*
- * Send out any LanMan broadcast announcements
- * of our server names.
- * (nmbd_sendannounce.c)
- */
- announce_my_lm_server_names(t);
-
- /*
- * If we are a local master browser, periodically
- * announce ourselves to the domain master browser.
- * This also deals with syncronising the domain master
- * browser server lists with ourselves as a local
- * master browser.
- * (nmbd_sendannounce.c)
- */
- announce_myself_to_domain_master_browser(t);
-
- /*
- * Fullfill any remote announce requests.
- * (nmbd_sendannounce.c)
- */
- announce_remote(t);
-
- /*
- * Fullfill any remote browse sync announce requests.
- * (nmbd_sendannounce.c)
- */
- browse_sync_remote(t);
-
- /*
- * Scan the broadcast subnets, and WINS client
- * namelists and refresh any that need refreshing.
- * (nmbd_mynames.c)
- */
- refresh_my_names(t);
-
- /*
- * Scan the subnet namelists and server lists and
- * expire thos that have timed out.
- * (nmbd.c)
- */
- expire_names_and_servers(t);
-
- /*
- * Write out a snapshot of our current browse list into
- * the browse.dat file. This is used by smbd to service
- * incoming NetServerEnum calls - used to synchronise
- * browse lists over subnets.
- * (nmbd_serverlistdb.c)
- */
- write_browse_list(t, False);
-
- /*
- * If we are a domain master browser, we have a list of
- * local master browsers we should synchronise browse
- * lists with (these are added by an incoming local
- * master browser announcement packet). Expire any of
- * these that are no longer current, and pull the server
- * lists from each of these known local master browsers.
- * (nmbd_browsesync.c)
- */
- dmb_expire_and_sync_browser_lists(t);
-
- /*
- * Check that there is a local master browser for our
- * workgroup for all our broadcast subnets. If one
- * is not found, start an election (which we ourselves
- * may or may not participate in, depending on the
- * setting of the 'local master' parameter.
- * (nmbd_elections.c)
- */
- check_master_browser_exists(t);
-
- /*
- * If we are configured as a logon server, attempt to
- * register the special NetBIOS names to become such
- * (WORKGROUP<1c> name) on all broadcast subnets and
- * with the WINS server (if used). If we are configured
- * to become a domain master browser, attempt to register
- * the special NetBIOS name (WORKGROUP<1b> name) to
- * become such.
- * (nmbd_become_dmb.c)
- */
- add_domain_names(t);
-
- /*
- * If we are a WINS server, do any timer dependent
- * processing required.
- * (nmbd_winsserver.c)
- */
- initiate_wins_processing(t);
-
- /*
- * If we are a domain master browser, attempt to contact the
- * WINS server to get a list of all known WORKGROUPS/DOMAINS.
- * This will only work to a Samba WINS server.
- * (nmbd_browsesync.c)
- */
- if (lp_enhanced_browsing()) {
- collect_all_workgroup_names_from_wins_server(t);
- }
-
- /*
- * Go through the response record queue and time out or re-transmit
- * and expired entries.
- * (nmbd_packets.c)
- */
- retransmit_or_expire_response_records(t);
-
- /*
- * check to see if any remote browse sync child processes have completed
- */
- sync_check_completion();
-
- /*
- * regularly sync with any other DMBs we know about
- */
- if (lp_enhanced_browsing()) {
- sync_all_dmbs(t);
- }
-
- /*
- * clear the unexpected packet queue
- */
- clear_unexpected(t);
-
- /*
- * Reload the services file if we got a sighup.
- */
-
- if(reload_after_sighup) {
- reload_nmbd_services( True );
- reopen_logs();
- if(reload_interfaces(0))
- return;
- reload_after_sighup = False;
- }
+ write_browse_list( 0, True );
+ dump_all_namelists();
+ reload_nmbd_services( True );
+ reopen_logs();
+
+ if(buf) {
+ /* We were called from process() */
+ /* If reload_interfaces() returned True */
+ /* we need to shutdown if there are no subnets... */
+ /* pass this info back to process() */
+ *((BOOL*)buf) = reload_interfaces(0);
+ }
+}
+
+static void msg_nmbd_send_packet(int msg_type, struct process_id src,
+ void *buf, size_t len, void *private_data)
+{
+ struct packet_struct *p = (struct packet_struct *)buf;
+ struct subnet_record *subrec;
+ struct in_addr *local_ip;
+
+ DEBUG(10, ("Received send_packet from %d\n", procid_to_pid(&src)));
+
+ if (len != sizeof(struct packet_struct)) {
+ DEBUG(2, ("Discarding invalid packet length from %d\n",
+ procid_to_pid(&src)));
+ return;
+ }
+
+ if ((p->packet_type != NMB_PACKET) &&
+ (p->packet_type != DGRAM_PACKET)) {
+ DEBUG(2, ("Discarding invalid packet type from %d: %d\n",
+ procid_to_pid(&src), p->packet_type));
+ return;
+ }
+
+ local_ip = iface_ip(p->ip);
- /* check for new network interfaces */
- if(reload_interfaces(t))
+ if (local_ip == NULL) {
+ DEBUG(2, ("Could not find ip for packet from %d\n",
+ procid_to_pid(&src)));
return;
+ }
+
+ subrec = FIRST_SUBNET;
- /* free up temp memory */
- lp_talloc_free();
- }
-} /* process */
+ p->fd = (p->packet_type == NMB_PACKET) ?
+ subrec->nmb_sock : subrec->dgram_sock;
+ for (subrec = FIRST_SUBNET; subrec != NULL;
+ subrec = NEXT_SUBNET_EXCLUDING_UNICAST(subrec)) {
+ if (ip_equal(*local_ip, subrec->myip)) {
+ p->fd = (p->packet_type == NMB_PACKET) ?
+ subrec->nmb_sock : subrec->dgram_sock;
+ break;
+ }
+ }
+
+ if (p->packet_type == DGRAM_PACKET) {
+ p->port = 138;
+ p->packet.dgram.header.source_ip.s_addr = local_ip->s_addr;
+ p->packet.dgram.header.source_port = 138;
+ }
+
+ send_packet(p);
+}
/**************************************************************************** **
- open the socket communication
+ The main select loop.
**************************************************************************** */
-static BOOL open_sockets(BOOL isdaemon, int port)
+
+static void process(void)
{
- /* The sockets opened here will be used to receive broadcast
- packets *only*. Interface specific sockets are opened in
- make_subnet() in namedbsubnet.c. Thus we bind to the
- address "0.0.0.0". The parameter 'socket address' is
- now deprecated.
- */
-
- if ( isdaemon )
- ClientNMB = open_socket_in(SOCK_DGRAM, port,0,0,True);
- else
- ClientNMB = 0;
-
- ClientDGRAM = open_socket_in(SOCK_DGRAM,DGRAM_PORT,3,0,True);
+ BOOL run_election;
+ BOOL no_subnets;
+
+ while( True ) {
+ time_t t = time(NULL);
+
+ /* Check for internal messages */
+
+ message_dispatch();
+
+ /*
+ * Check all broadcast subnets to see if
+ * we need to run an election on any of them.
+ * (nmbd_elections.c)
+ */
+
+ run_election = check_elections();
+
+ /*
+ * Read incoming UDP packets.
+ * (nmbd_packets.c)
+ */
+
+ if(listen_for_packets(run_election))
+ return;
+
+ /*
+ * Handle termination inband.
+ */
+
+ if (got_sig_term) {
+ got_sig_term = 0;
+ terminate();
+ }
+
+ /*
+ * Process all incoming packets
+ * read above. This calls the success and
+ * failure functions registered when response
+ * packets arrrive, and also deals with request
+ * packets from other sources.
+ * (nmbd_packets.c)
+ */
+
+ run_packet_queue();
+
+ /*
+ * Run any elections - initiate becoming
+ * a local master browser if we have won.
+ * (nmbd_elections.c)
+ */
+
+ run_elections(t);
+
+ /*
+ * Send out any broadcast announcements
+ * of our server names. This also announces
+ * the workgroup name if we are a local
+ * master browser.
+ * (nmbd_sendannounce.c)
+ */
+
+ announce_my_server_names(t);
- if ( ClientNMB == -1 )
- return( False );
+ /*
+ * Send out any LanMan broadcast announcements
+ * of our server names.
+ * (nmbd_sendannounce.c)
+ */
+
+ announce_my_lm_server_names(t);
+
+ /*
+ * If we are a local master browser, periodically
+ * announce ourselves to the domain master browser.
+ * This also deals with syncronising the domain master
+ * browser server lists with ourselves as a local
+ * master browser.
+ * (nmbd_sendannounce.c)
+ */
+
+ announce_myself_to_domain_master_browser(t);
+
+ /*
+ * Fullfill any remote announce requests.
+ * (nmbd_sendannounce.c)
+ */
+
+ announce_remote(t);
+
+ /*
+ * Fullfill any remote browse sync announce requests.
+ * (nmbd_sendannounce.c)
+ */
+
+ browse_sync_remote(t);
+
+ /*
+ * Scan the broadcast subnets, and WINS client
+ * namelists and refresh any that need refreshing.
+ * (nmbd_mynames.c)
+ */
+
+ refresh_my_names(t);
+
+ /*
+ * Scan the subnet namelists and server lists and
+ * expire thos that have timed out.
+ * (nmbd.c)
+ */
+
+ expire_names_and_servers(t);
+
+ /*
+ * Write out a snapshot of our current browse list into
+ * the browse.dat file. This is used by smbd to service
+ * incoming NetServerEnum calls - used to synchronise
+ * browse lists over subnets.
+ * (nmbd_serverlistdb.c)
+ */
+
+ write_browse_list(t, False);
+
+ /*
+ * If we are a domain master browser, we have a list of
+ * local master browsers we should synchronise browse
+ * lists with (these are added by an incoming local
+ * master browser announcement packet). Expire any of
+ * these that are no longer current, and pull the server
+ * lists from each of these known local master browsers.
+ * (nmbd_browsesync.c)
+ */
- /* we are never interested in SIGPIPE */
- BlockSignals(True,SIGPIPE);
+ dmb_expire_and_sync_browser_lists(t);
- set_socket_options( ClientNMB, "SO_BROADCAST" );
- set_socket_options( ClientDGRAM, "SO_BROADCAST" );
+ /*
+ * Check that there is a local master browser for our
+ * workgroup for all our broadcast subnets. If one
+ * is not found, start an election (which we ourselves
+ * may or may not participate in, depending on the
+ * setting of the 'local master' parameter.
+ * (nmbd_elections.c)
+ */
+
+ check_master_browser_exists(t);
+
+ /*
+ * If we are configured as a logon server, attempt to
+ * register the special NetBIOS names to become such
+ * (WORKGROUP<1c> name) on all broadcast subnets and
+ * with the WINS server (if used). If we are configured
+ * to become a domain master browser, attempt to register
+ * the special NetBIOS name (WORKGROUP<1b> name) to
+ * become such.
+ * (nmbd_become_dmb.c)
+ */
+
+ add_domain_names(t);
+
+ /*
+ * If we are a WINS server, do any timer dependent
+ * processing required.
+ * (nmbd_winsserver.c)
+ */
+
+ initiate_wins_processing(t);
+
+ /*
+ * If we are a domain master browser, attempt to contact the
+ * WINS server to get a list of all known WORKGROUPS/DOMAINS.
+ * This will only work to a Samba WINS server.
+ * (nmbd_browsesync.c)
+ */
+
+ if (lp_enhanced_browsing())
+ collect_all_workgroup_names_from_wins_server(t);
- DEBUG( 3, ( "open_sockets: Broadcast sockets opened.\n" ) );
- return( True );
-} /* open_sockets */
+ /*
+ * Go through the response record queue and time out or re-transmit
+ * and expired entries.
+ * (nmbd_packets.c)
+ */
+
+ retransmit_or_expire_response_records(t);
+
+ /*
+ * check to see if any remote browse sync child processes have completed
+ */
+ sync_check_completion();
+
+ /*
+ * regularly sync with any other DMBs we know about
+ */
+
+ if (lp_enhanced_browsing())
+ sync_all_dmbs(t);
+
+ /*
+ * clear the unexpected packet queue
+ */
+
+ clear_unexpected(t);
+
+ /*
+ * Reload the services file if we got a sighup.
+ */
+
+ if(reload_after_sighup) {
+ DEBUG( 0, ( "Got SIGHUP dumping debug info.\n" ) );
+ msg_reload_nmbd_services(MSG_SMB_CONF_UPDATED,
+ pid_to_procid(0), (void*) &no_subnets, 0, NULL);
+ if(no_subnets)
+ return;
+ reload_after_sighup = 0;
+ }
+
+ /* check for new network interfaces */
+
+ if(reload_interfaces(t))
+ return;
+
+ /* free up temp memory */
+ lp_TALLOC_FREE();
+ }
+}
/**************************************************************************** **
- initialise connect, service and file structs
+ Open the socket communication.
**************************************************************************** */
-static BOOL init_structs(void)
+
+static BOOL open_sockets(BOOL isdaemon, int port)
{
- extern fstring local_machine;
- char *p, **ptr;
- int namecount;
- int n;
- int nodup;
- char *nbname;
-
- if (! *global_myname)
- {
- fstrcpy( global_myname, myhostname() );
- p = strchr( global_myname, '.' );
- if (p)
- *p = 0;
- }
- strupper( global_myname );
-
- /* Add any NETBIOS name aliases. Ensure that the first entry
- is equal to global_myname.
- */
- /* Work out the max number of netbios aliases that we have */
- ptr = lp_netbios_aliases();
- for( namecount=0; *ptr; namecount++,ptr++ )
- ;
- if ( *global_myname )
- namecount++;
-
- /* Allocate space for the netbios aliases */
- my_netbios_names = (char **)malloc( sizeof(char *) * (namecount+1) );
- if( NULL == my_netbios_names )
- {
- DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
- return( False );
- }
-
- /* Use the global_myname string first */
- namecount=0;
- if ( *global_myname )
- my_netbios_names[namecount++] = global_myname;
+ /*
+ * The sockets opened here will be used to receive broadcast
+ * packets *only*. Interface specific sockets are opened in
+ * make_subnet() in namedbsubnet.c. Thus we bind to the
+ * address "0.0.0.0". The parameter 'socket address' is
+ * now deprecated.
+ */
+
+ if ( isdaemon )
+ ClientNMB = open_socket_in(SOCK_DGRAM, port,
+ 0, interpret_addr(lp_socket_address()),
+ True);
+ else
+ ClientNMB = 0;
- ptr = lp_netbios_aliases();
- while ( *ptr )
- {
- nbname = strdup(*ptr);
- if (nbname == NULL)
- {
- DEBUG(0,("init_structs: malloc fail when allocating names.\n"));
- return False;
- }
- strupper( nbname );
- /* Look for duplicates */
- nodup=1;
- for( n=0; n<namecount; n++ )
- {
- if( 0 == strcmp( nbname, my_netbios_names[n] ) )
- nodup=0;
- }
- if (nodup)
- my_netbios_names[namecount++] = nbname;
- else
- free(nbname);
-
- ptr++;
- }
-
- /* Terminate name list */
- my_netbios_names[namecount++] = NULL;
-
- fstrcpy( local_machine, global_myname );
- trim_string( local_machine, " ", " " );
- p = strchr( local_machine, ' ' );
- if (p)
- *p = 0;
- strlower( local_machine );
+ ClientDGRAM = open_socket_in(SOCK_DGRAM, DGRAM_PORT,
+ 3, interpret_addr(lp_socket_address()),
+ True);
- DEBUG( 5, ("Netbios name list:-\n") );
- for( n=0; my_netbios_names[n]; n++ )
- DEBUGADD( 5, ( "my_netbios_names[%d]=\"%s\"\n", n, my_netbios_names[n] ) );
+ if ( ClientNMB == -1 )
+ return( False );
- return( True );
-} /* init_structs */
+ /* we are never interested in SIGPIPE */
+ BlockSignals(True,SIGPIPE);
-/**************************************************************************** **
- usage on the program
- **************************************************************************** */
-static void usage(char *pname)
-{
+ set_socket_options( ClientNMB, "SO_BROADCAST" );
+ set_socket_options( ClientDGRAM, "SO_BROADCAST" );
- printf( "Usage: %s [-DaohV] [-H lmhosts file] [-d debuglevel] [-l log basename]\n", pname );
- printf( " [-n name] [-p port] [-s configuration file]\n" );
- printf( "\t-D Become a daemon\n" );
- printf( "\t-a Append to log file (default)\n" );
- printf( "\t-o Overwrite log file, don't append\n" );
- printf( "\t-h Print usage\n" );
- printf( "\t-V Print version\n" );
- printf( "\t-H hosts file Load a netbios hosts file\n" );
- printf( "\t-d debuglevel Set the debuglevel\n" );
- printf( "\t-l log basename. Basename for log/debug files\n" );
- printf( "\t-n netbiosname. Primary netbios name\n" );
- printf( "\t-p port Listen on the specified port\n" );
- printf( "\t-s configuration file Configuration file name\n" );
- printf( "\n");
-} /* usage */
+ /* Ensure we're non-blocking. */
+ set_blocking( ClientNMB, False);
+ set_blocking( ClientDGRAM, False);
+ DEBUG( 3, ( "open_sockets: Broadcast sockets opened.\n" ) );
+ return( True );
+}
/**************************************************************************** **
main program
**************************************************************************** */
- int main(int argc,char *argv[])
+ int main(int argc, const char *argv[])
{
- int opt;
- extern FILE *dbf;
- extern char *optarg;
- extern BOOL append_log;
+ pstring logfile;
+ static BOOL opt_interactive;
+ poptContext pc;
+ static char *p_lmhosts = dyn_LMHOSTSFILE;
+ static BOOL no_process_group = False;
+ struct poptOption long_options[] = {
+ POPT_AUTOHELP
+ {"daemon", 'D', POPT_ARG_VAL, &is_daemon, True, "Become a daemon(default)" },
+ {"interactive", 'i', POPT_ARG_VAL, &opt_interactive, True, "Run interactive (not a daemon)" },
+ {"foreground", 'F', POPT_ARG_VAL, &Fork, False, "Run daemon in foreground (for daemontools & etc)" },
+ {"no-process-group", 0, POPT_ARG_VAL, &no_process_group, True, "Don't create a new process group" },
+ {"log-stdout", 'S', POPT_ARG_VAL, &log_stdout, True, "Log to stdout" },
+ {"hosts", 'H', POPT_ARG_STRING, &p_lmhosts, 'H', "Load a netbios hosts file"},
+ {"port", 'p', POPT_ARG_INT, &global_nmb_port, NMB_PORT, "Listen on the specified port" },
+ POPT_COMMON_SAMBA
+ { NULL }
+ };
+
+ load_case_tables();
+
+ global_nmb_port = NMB_PORT;
+
+ pc = poptGetContext("nmbd", argc, argv, long_options, 0);
+ while (poptGetNextOpt(pc) != -1) {};
+ poptFreeContext(pc);
+
+ global_in_nmbd = True;
+
+ StartupTime = time(NULL);
+
+ sys_srandom(time(NULL) ^ sys_getpid());
+
+ if (!override_logfile) {
+ slprintf(logfile, sizeof(logfile)-1, "%s/log.nmbd", dyn_LOGFILEBASE);
+ lp_set_logfile(logfile);
+ }
+
+ fault_setup((void (*)(void *))fault_continue );
+ dump_core_setup("nmbd");
+
+ /* POSIX demands that signals are inherited. If the invoking process has
+ * these signals masked, we will have problems, as we won't receive them. */
+ BlockSignals(False, SIGHUP);
+ BlockSignals(False, SIGUSR1);
+ BlockSignals(False, SIGTERM);
+
+ CatchSignal( SIGHUP, SIGNAL_CAST sig_hup );
+ CatchSignal( SIGTERM, SIGNAL_CAST sig_term );
+
+#if defined(SIGFPE)
+ /* we are never interested in SIGFPE */
+ BlockSignals(True,SIGFPE);
+#endif
- append_log = True; /* Default, override with '-o' option. */
+ /* We no longer use USR2... */
+#if defined(SIGUSR2)
+ BlockSignals(True, SIGUSR2);
+#endif
- global_nmb_port = NMB_PORT;
- *host_file = 0;
- global_in_nmbd = True;
+ if ( opt_interactive ) {
+ Fork = False;
+ log_stdout = True;
+ }
- StartupTime = time(NULL);
+ if ( log_stdout && Fork ) {
+ DEBUG(0,("ERROR: Can't log to stdout (-S) unless daemon is in foreground (-F) or interactive (-i)\n"));
+ exit(1);
+ }
- sys_srandom(time(NULL) ^ sys_getpid());
+ setup_logging( argv[0], log_stdout );
- TimeInit();
+ reopen_logs();
- slprintf(debugf, sizeof(debugf)-1, "%s/log.nmbd", LOGFILEBASE);
- setup_logging( argv[0], False );
+ DEBUG( 0, ( "Netbios nameserver version %s started.\n", SAMBA_VERSION_STRING) );
+ DEBUGADD( 0, ( "%s\n", COPYRIGHT_STARTUP_MESSAGE ) );
- charset_initialise();
+ if ( !reload_nmbd_services(False) )
+ return(-1);
-#ifdef LMHOSTSFILE
- pstrcpy( host_file, LMHOSTSFILE );
-#endif
+ if(!init_names())
+ return -1;
- /* this is for people who can't start the program correctly */
- while (argc > 1 && (*argv[1] != '-'))
- {
- argv++;
- argc--;
- }
+ reload_nmbd_services( True );
- fault_setup((void (*)(void *))fault_continue );
+ if (strequal(lp_workgroup(),"*")) {
+ DEBUG(0,("ERROR: a workgroup name of * is no longer supported\n"));
+ exit(1);
+ }
- /* POSIX demands that signals are inherited. If the invoking process has
- * these signals masked, we will have problems, as we won't recieve them. */
- BlockSignals(False, SIGHUP);
- BlockSignals(False, SIGUSR1);
- BlockSignals(False, SIGTERM);
+ set_samba_nb_type();
- CatchSignal( SIGHUP, SIGNAL_CAST sig_hup );
- CatchSignal( SIGTERM, SIGNAL_CAST sig_term );
+ if (!is_daemon && !is_a_socket(0)) {
+ DEBUG(0,("standard input is not a socket, assuming -D option\n"));
+ is_daemon = True;
+ }
+
+ if (is_daemon && !opt_interactive) {
+ DEBUG( 2, ( "Becoming a daemon.\n" ) );
+ become_daemon(Fork, no_process_group);
+ }
-#if defined(SIGFPE)
- /* we are never interested in SIGFPE */
- BlockSignals(True,SIGFPE);
+#if HAVE_SETPGID
+ /*
+ * If we're interactive we want to set our own process group for
+ * signal management.
+ */
+ if (opt_interactive && !no_process_group)
+ setpgid( (pid_t)0, (pid_t)0 );
#endif
- /* We no longer use USR2... */
-#if defined(SIGUSR2)
- BlockSignals(True, SIGUSR2);
+#ifndef SYNC_DNS
+ /* Setup the async dns. We do it here so it doesn't have all the other
+ stuff initialised and thus chewing memory and sockets */
+ if(lp_we_are_a_wins_server() && lp_dns_proxy()) {
+ start_async_dns();
+ }
#endif
- while( EOF !=
- (opt = getopt( argc, argv, "Vaos:T:I:C:bAB:N:Rn:l:d:Dp:hSH:G:f:" )) )
- {
- switch (opt)
- {
- case 's':
- pstrcpy(servicesf,optarg);
- break;
- case 'N':
- case 'B':
- case 'I':
- case 'C':
- case 'G':
- DEBUG(0,("Obsolete option '%c' used\n",opt));
- break;
- case 'H':
- pstrcpy(host_file,optarg);
- break;
- case 'n':
- pstrcpy(global_myname,optarg);
- strupper(global_myname);
- break;
- case 'l':
- slprintf(debugf,sizeof(debugf)-1, "%s.nmb",optarg);
- break;
- case 'a':
- append_log = True;
- break;
- case 'o':
- append_log = False;
- break;
- case 'D':
- is_daemon = True;
- break;
- case 'd':
- DEBUGLEVEL = atoi(optarg);
- break;
- case 'p':
- global_nmb_port = atoi(optarg);
- break;
- case 'h':
- usage(argv[0]);
- exit(0);
- break;
- case 'V':
- printf( "Version %s\n", VERSION );
- exit(0);
- break;
- default:
- if( !is_a_socket(0) )
- {
- DEBUG(0,("Incorrect program usage - is the command line correct?\n"));
- usage(argv[0]);
- exit(0);
- }
- break;
- }
- }
-
- reopen_logs();
-
- DEBUG( 1, ( "Netbios nameserver version %s started.\n", VERSION ) );
- DEBUGADD( 1, ( "Copyright Andrew Tridgell 1994-1998\n" ) );
-
- if ( !reload_nmbd_services(False) )
- return(-1);
-
- codepage_initialise(lp_client_code_page());
-
- if(!init_structs())
- return -1;
-
- reload_nmbd_services( True );
-
- fstrcpy( global_myworkgroup, lp_workgroup() );
-
- if (strequal(global_myworkgroup,"*"))
- {
- DEBUG(0,("ERROR: a workgroup name of * is no longer supported\n"));
- exit(1);
- }
-
- set_samba_nb_type();
-
- if (!is_daemon && !is_a_socket(0))
- {
- DEBUG(0,("standard input is not a socket, assuming -D option\n"));
- is_daemon = True;
- }
-
- if (is_daemon)
- {
- DEBUG( 2, ( "Becoming a daemon.\n" ) );
- become_daemon();
- }
+ if (!directory_exist(lp_lockdir(), NULL)) {
+ mkdir(lp_lockdir(), 0755);
+ }
-#ifndef SYNC_DNS
- /* Setup the async dns. We do it here so it doesn't have all the other
- stuff initialised and thus chewing memory and sockets */
- if(lp_we_are_a_wins_server()) {
- start_async_dns();
- }
+ pidfile_create("nmbd");
+ message_init();
+ message_register(MSG_FORCE_ELECTION, nmbd_message_election, NULL);
+#if 0
+ /* Until winsrepl is done. */
+ message_register(MSG_WINS_NEW_ENTRY, nmbd_wins_new_entry, NULL);
#endif
+ message_register(MSG_SHUTDOWN, nmbd_terminate, NULL);
+ message_register(MSG_SMB_CONF_UPDATED, msg_reload_nmbd_services, NULL);
+ message_register(MSG_SEND_PACKET, msg_nmbd_send_packet, NULL);
+
+ TimeInit();
- if (!directory_exist(lp_lockdir(), NULL)) {
- mkdir(lp_lockdir(), 0755);
- }
-
- pidfile_create("nmbd");
- message_init();
- message_register(MSG_FORCE_ELECTION, nmbd_message_election);
-
- DEBUG( 3, ( "Opening sockets %d\n", global_nmb_port ) );
-
- if ( !open_sockets( is_daemon, global_nmb_port ) )
- return 1;
-
- /* Determine all the IP addresses we have. */
- load_interfaces();
-
- /* Create an nmbd subnet record for each of the above. */
- if( False == create_subnets() )
- {
- DEBUG(0,("ERROR: Failed when creating subnet lists. Exiting.\n"));
- exit(1);
- }
-
- /* Load in any static local names. */
- if ( *host_file )
- {
- load_lmhosts_file(host_file);
- DEBUG(3,("Loaded hosts file\n"));
- }
-
- /* If we are acting as a WINS server, initialise data structures. */
- if( !initialise_wins() )
- {
- DEBUG( 0, ( "nmbd: Failed when initialising WINS server.\n" ) );
- exit(1);
- }
-
- /*
- * Register nmbd primary workgroup and nmbd names on all
- * the broadcast subnets, and on the WINS server (if specified).
- * Also initiate the startup of our primary workgroup (start
- * elections if we are setup as being able to be a local
- * master browser.
- */
-
- if( False == register_my_workgroup_and_names() )
- {
- DEBUG(0,("ERROR: Failed when creating my my workgroup. Exiting.\n"));
- exit(1);
- }
-
- /* We can only take signals in the select. */
- BlockSignals( True, SIGTERM );
-
- process();
-
- if (dbf)
- fclose(dbf);
- return(0);
-} /* main */
+ DEBUG( 3, ( "Opening sockets %d\n", global_nmb_port ) );
+ if ( !open_sockets( is_daemon, global_nmb_port ) ) {
+ kill_async_dns_child();
+ return 1;
+ }
+
+ /* Determine all the IP addresses we have. */
+ load_interfaces();
+
+ /* Create an nmbd subnet record for each of the above. */
+ if( False == create_subnets() ) {
+ DEBUG(0,("ERROR: Failed when creating subnet lists. Exiting.\n"));
+ kill_async_dns_child();
+ exit(1);
+ }
+
+ /* Load in any static local names. */
+ load_lmhosts_file(p_lmhosts);
+ DEBUG(3,("Loaded hosts file %s\n", p_lmhosts));
+
+ /* If we are acting as a WINS server, initialise data structures. */
+ if( !initialise_wins() ) {
+ DEBUG( 0, ( "nmbd: Failed when initialising WINS server.\n" ) );
+ kill_async_dns_child();
+ exit(1);
+ }
+
+ /*
+ * Register nmbd primary workgroup and nmbd names on all
+ * the broadcast subnets, and on the WINS server (if specified).
+ * Also initiate the startup of our primary workgroup (start
+ * elections if we are setup as being able to be a local
+ * master browser.
+ */
+
+ if( False == register_my_workgroup_and_names() ) {
+ DEBUG(0,("ERROR: Failed when creating my my workgroup. Exiting.\n"));
+ kill_async_dns_child();
+ exit(1);
+ }
+
+ /* We can only take signals in the select. */
+ BlockSignals( True, SIGTERM );
+
+ process();
+
+ if (dbf)
+ x_fclose(dbf);
+ kill_async_dns_child();
+ return(0);
+}
git.samba.org / samba.git / blobdiff