[people/stevee/guardian.git] / guardian

#!/usr/bin/perl
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2015  IPFire Development Team                                 #
#                                                                             #
# 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 3 of the License, or           #
# (at your option) any later version.                                         #
#                                                                             #
# This program is distributed in the hope that it will be useful,             #
# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
# 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, see <http://www.gnu.org/licenses/>.       #
#                                                                             #
###############################################################################

use strict;
use threads;
use threads::shared;
use Getopt::Long;
use Thread::Queue;
use Linux::Inotify2;
use Time::HiRes qw[ time sleep ];

require Guardian::Base;
require Guardian::Config;
require Guardian::Logger;
require Guardian::Parser;
require Guardian::Socket;

use warnings;

# Disable warnings of unjoinded threads when stopping guardian.
no warnings 'threads';

# Define version.
my $version ="2.0";

# Get and store the given command line arguments in a hash.
my %cmdargs = ();

&GetOptions (\%cmdargs,
	'foreground|f',
	'config|c=s',
	'help|h',
	'version|v',
);

# Show help / version information.
if (defined($cmdargs{"help"})) {
	print "Guardian $version \n";
	print "Usage: guardian <optional arguments>\n";
	print " -c, --config\t\tspecifiy a configuration file other than the default (/etc/guardian/guardian.conf)\n";
	print " -f, --foreground\trun in the foreground (doesn't fork, any output goes to STDOUT)\n";
	print " -h, --help\t\tshows this help\n";
	print " -v, --version\t\tdisplay programm version and exit.\n";
	exit;
} elsif (defined($cmdargs{"version"})) {
	print "Guardian $version \n";
	exit;
}

# Read-in the configuration file and store the settings.
# Push the may be given config file argument.
my %mainsettings = &Guardian::Config::UseConfig($cmdargs{"config"});

# Initialize Logger.
my $logger = Guardian::Logger->Init(%mainsettings);
$logger->Log("debug", "Logger successfully initialized...");

# Add the logger object to the mainsettings for passing
# it to the modules.
$mainsettings{Logger} = $logger;

# Redirect perls "die" messages to the logger before exiting.
$SIG{__DIE__} = sub { $logger->Log("err", "@_"); };

# Shared hash between the main process and all threads. It will store all
# monitored files and their current file position.
my %monitored_files :shared = ();

# Create the main queue. It is used to store and process all events which are
# reported and enqueued by the worker threads.
my $queue :shared = new Thread::Queue or die "Could not create new, empty queue. $!";;

# Array to store all currently running worker objects.
# (Does not include the socket thread)
my @running_workers;

# Call Init function to initzialize guardian.
&Init();

# Infinite main loop, which processes all queued events.
while(1) {
	# Get the amount of elements in our queue.
	# "undef" will be returned if it is empty.
	my $current_events = $queue->pending();

	# If there is at least one element enqued
	if($current_events > 0) {
		# Grab the data of the top enqueued event.
		my $event = $queue->peek();

		# Log processed event.
		$logger->Log("debug", "QUEUE - Processed event: $event");

		# Drop processed event from queue.
		$queue->dequeue();
	}

	# Sleep 10ms to reduce the load of the main process.
	sleep(0.01);
}

#
## Init function.
#
## This function contains code which has to be executed while guardian
## is starting.
#
sub Init () {
	# Setup signal handler.
	&SignalHandler();

	# Setup IPC mechanism via Socket in an own thread.
	threads->create(\&Socket);

	# Generate hash of monitored files.
	%monitored_files = &Guardian::Base::GenerateMonitoredFiles(\%mainsettings, \%monitored_files);

	# Start worker threads.
	&StartWorkers();
}

#
## Worker function.
#
## This function is responsible for monitoring modifications of the given logfile,
## read them and pass them to the message parser.
#
## To get file modifications the inotify subsystem of the linux kernel is used.
#
## In order to prevent from permanently read and keep files opened, or dealing
## with huge logfiles, at initialization time of the worker process, the file will
## be opened once and the cursor position of the end of file (EOF) get stored. When
## reading any newly added lines from the file, we directly can jump to the last
## known position and get these lines. Afterwards, we store the current curser position
## again, so we can do it in this way over and over again.
#
## All read lines get stored in an array, which will be passed to the Parser.
#
## If any response (action) from the parser get recieved, it will be put into the
## shared event queue.
#
sub Worker ($) {
	my $file = $_[0];

	# Signal handler to kill worker.
	$SIG{'KILL'} = sub { threads->exit(); };

	# Create inotify watcher.
	my $watcher = new Linux::Inotify2 or die "Could not use inotify. $!";

	# Monitor the specified file.
	$watcher->watch("$file", IN_MODIFY) or die "Could not monitor $file. $!";

	# Switch watcher into non-blocking mode.
	$watcher->blocking(0);

	# Log successfully spawned worker.
	$logger->Log("debug", "Spawned worker thread for: $file");

	# Infinite loop.
	while(1) {
		# Check for any events and perform them, if there
		# is a least one.
		if ($watcher->read) {
			my @message = ();

			# Obtain fileposition from hash.
			my $fileposition = $monitored_files{$file};

			# Open the file.
			open (FILE, $file) or die "Could not open $file. $!";

			# Seek to the last known position.
			seek (FILE, $fileposition, 0);

			# Get the log message.
			while (my $line = <FILE>) {
				# Remove any newlines.
				chomp $line;

				# Add all lines to the message array.
				push (@message, $line);
			}

			{
				# Lock shared hash.
				lock(%monitored_files);

				# Update fileposition.
				$monitored_files{$file} = tell(FILE);
			}

			# Close file.
			close(FILE);

			# Send filename and message to the parser,
			# which will return if an action has to be performed.
			my @action = &Guardian::Parser::Parser("$file", @message);

			# Send the action to the main process and put it into
			# the queue.
			if (@action) {
				# Lock the queue.
				lock($queue);

				# Put the required action into the queue.
				$queue->enqueue(@action);
			}
		} else {
			# Sleep for 10ms until the next round of the loop will start.
			sleep(0.01);
		}
	}
}

#
## Socket function.
#
## This function uses the Socket module to create and listen to an UNIX socket.
## It automatically accepts all incomming connections and pass the recieved
## data messages to the the Message_Parser function which is also part of the
## socket module.
#
## If a valid command has been sent through the socket, the corresponding event
## will be enqueued into the shared event queue.
#
sub Socket () {
	# Create the Server socket by calling the responsible function.
	my $server = &Guardian::Socket::Server();

	# Log successfull creation of socket.
	$logger->Log("debug", "Listening to Socket...");

        # Accept incomming connections from the socket.
        while (my $connection = $server->accept()) {
		# Autoflush the socket after the data
		# has been recieved.
		$connection->autoflush(1);

		# Gather all data from the connection.
		while (my $message = <$connection>) {
			# Remove any newlines.
			chomp($message);

			# Log recieved socket command.
			$logger->Log("debug", "Socket - Recieved message: $message");

			# Send the recieved data message to the
			# socket parser.
			my $action = &Guardian::Socket::Message_Parser($message);

			# If the parser returns to perform an action,
			# add it to the main event queue.
			if ($action) {
				# Lock the queue.
				lock($queue);

				# Enqueue the returned action.
				$queue->enqueue($action);
			}
		}
	}
}

#
## Function for capturing process signals.
#
## This function captures any sent process signals and will call various
## actions, basend on the captured signal.
#
sub SignalHandler {
	$SIG{INT} = \&Shutdown;
	$SIG{TERM} = \&Shutdown;
	$SIG{QUIT} = \&Shutdown;
	$SIG{HUP} = \&Reload;
}

#
## Function to start the workers (threads) for all monitored files.
#
## This function will loop through the hash of monitored files and will
## spawn an own thread based worker for each file. Every created worker will
## be added to the array of running workers.
#
sub StartWorkers () {
	# Loop through the hash which contains the monitored files and start
	# a worker thread for each single one.
	foreach my $file (keys %monitored_files) {
		$logger->Log("debug", "Starting worker thread for $file");
		# Create worker thread for the file.
		push @running_workers, threads->create(\&Worker,$file);
	}
}

#
## Function to stop all running workers.
#
## This function is used to stop all currently running workers and will be
## called when reloading or shutting down guardian.
#
sub StopWorkers () {
	# Loop through all running workers.
	foreach my $worker (@running_workers) {
		# Send the worker the "KILL" signal and detach the
		# thread so perl can do an automatically clean-up.
		$worker->kill('KILL');
	}
	$logger->Log("debug", "All workers are stopped now...");
}

#
## Reload function.
#
## This function will get called if the signal handler recieves a "SIGHUP" signal,
## or the reload command will be sent via socket connection. It is responsible for
## reloading all configure options and stopping/starting the worker threads.
#
sub Reload () {
	# Log reload.
	$logger->Log("info", "Reload configuration...");

	# Stop all running workers.
	&StopWorkers();

	# Re-read configuration file.
	%mainsettings = &Guardian::Config::UseConfig($cmdargs{"config"});

	# Update Logger settings.
	$logger = Guardian::Logger->Init(%mainsettings);

	# Update logger object in mainsettings hash.
	$mainsettings{Logger} = $logger;

	# Re-generate hash of monitored files.
	%monitored_files = &Guardian::Base::GenerateMonitoredFiles(\%mainsettings, \%monitored_files);

	# Restart the worker threads.
	&StartWorkers();
}

#
## Shutdown function.
#
## This function is used to do a clean shutdown of guardian. It will be called
## by the signal handler when recieving INT (2), QUIT (3) and TERM (15) signals.
#
sub Shutdown () {
	# Log shutdown.
	$logger->Log("info", "Shutting down...");

	# Stop all workers.
	&StopWorkers();

	# Remove socket file on exit.
	&Guardian::Socket::RemoveSocketFile();

	# Sleep for one second to give perl some
	# time to proper clean up everything before
	# exiting.
	sleep(1);

	# Log good bye message.
	$logger->Log("debug", "Good Bye!");

	# Exit guardian.
	exit;
}
Commit	Line	Data
88d9af2c SS	1	#!/usr/bin/perl
	2	###############################################################################
	3	# #
	4	# IPFire.org - A linux based firewall #
	5	# Copyright (C) 2015 IPFire Development Team #
	6	# #
	7	# This program is free software: you can redistribute it and/or modify #
	8	# it under the terms of the GNU General Public License as published by #
	9	# the Free Software Foundation, either version 3 of the License, or #
	10	# (at your option) any later version. #
	11	# #
	12	# This program is distributed in the hope that it will be useful, #
	13	# but WITHOUT ANY WARRANTY; without even the implied warranty of #
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
	15	# GNU General Public License for more details. #
	16	# #
	17	# You should have received a copy of the GNU General Public License #
	18	# along with this program. If not, see <http://www.gnu.org/licenses/>. #
	19	# #
	20	###############################################################################
	21
	22	use strict;
	23	use threads;
	24	use threads::shared;
45bf2a03	25	use Getopt::Long;
88d9af2c SS	26	use Thread::Queue;
88d9af2c SS	27	use Linux::Inotify2;
01147a7e	28	use Time::HiRes qw[ time sleep ];
88d9af2c	29
3111df62	30	require Guardian::Base;
45bf2a03	31	require Guardian::Config;
c95dfa5b	32	require Guardian::Logger;
88d9af2c	33	require Guardian::Parser;
6abac3d4	34	require Guardian::Socket;
88d9af2c	35
5c694317 SS	36	use warnings;
5c694317 SS	37
e02ed027 SS	38	# Disable warnings of unjoinded threads when stopping guardian.
	39	no warnings 'threads';
	40
45bf2a03 SS	41	# Define version.
	42	my $version ="2.0";
	43
45bf2a03 SS	44	# Get and store the given command line arguments in a hash.
	45	my %cmdargs = ();
	46
	47	&GetOptions (\%cmdargs,
	48	'foreground\|f',
	49	'config\|c=s',
	50	'help\|h',
	51	'version\|v',
	52	);
	53
	54	# Show help / version information.
	55	if (defined($cmdargs{"help"})) {
	56	print "Guardian $version \n";
	57	print "Usage: guardian <optional arguments>\n";
	58	print " -c, --config\t\tspecifiy a configuration file other than the default (/etc/guardian/guardian.conf)\n";
	59	print " -f, --foreground\trun in the foreground (doesn't fork, any output goes to STDOUT)\n";
	60	print " -h, --help\t\tshows this help\n";
	61	print " -v, --version\t\tdisplay programm version and exit.\n";
	62	exit;
	63	} elsif (defined($cmdargs{"version"})) {
	64	print "Guardian $version \n";
	65	exit;
	66	}
	67
	68	# Read-in the configuration file and store the settings.
	69	# Push the may be given config file argument.
	70	my %mainsettings = &Guardian::Config::UseConfig($cmdargs{"config"});
	71
c95dfa5b	72	# Initialize Logger.
aab61123	73	my $logger = Guardian::Logger->Init(%mainsettings);
c95dfa5b SS	74	$logger->Log("debug", "Logger successfully initialized...");
c95dfa5b SS	75
fc555263 SS	76	# Add the logger object to the mainsettings for passing
	77	# it to the modules.
	78	$mainsettings{Logger} = $logger;
	79
0815025a SS	80	# Redirect perls "die" messages to the logger before exiting.
	81	$SIG{__DIE__} = sub { $logger->Log("err", "@_"); };
	82
3111df62 SS	83	# Shared hash between the main process and all threads. It will store all
	84	# monitored files and their current file position.
	85	my %monitored_files :shared = ();
	86
88d9af2c SS	87	# Create the main queue. It is used to store and process all events which are
88d9af2c SS	88	# reported and enqueued by the worker threads.
c0a59a63	89	my $queue :shared = new Thread::Queue or die "Could not create new, empty queue. $!";;
88d9af2c	90
9c74e9bb SS	91	# Array to store all currently running worker objects.
	92	# (Does not include the socket thread)
	93	my @running_workers;
	94
88d9af2c SS	95	# Call Init function to initzialize guardian.
	96	&Init();
	97
	98	# Infinite main loop, which processes all queued events.
	99	while(1) {
	100	# Get the amount of elements in our queue.
	101	# "undef" will be returned if it is empty.
	102	my $current_events = $queue->pending();
	103
	104	# If there is at least one element enqued
	105	if($current_events > 0) {
	106	# Grab the data of the top enqueued event.
	107	my $event = $queue->peek();
	108
c95dfa5b SS	109	# Log processed event.
c95dfa5b SS	110	$logger->Log("debug", "QUEUE - Processed event: $event");
88d9af2c SS	111
	112	# Drop processed event from queue.
	113	$queue->dequeue();
	114	}
	115
01147a7e SS	116	# Sleep 10ms to reduce the load of the main process.
01147a7e SS	117	sleep(0.01);
88d9af2c SS	118	}
	119
	120	#
	121	## Init function.
	122	#
	123	## This function contains code which has to be executed while guardian
	124	## is starting.
	125	#
	126	sub Init () {
915d9f45 SS	127	# Setup signal handler.
	128	&SignalHandler();
	129
6abac3d4 SS	130	# Setup IPC mechanism via Socket in an own thread.
	131	threads->create(\&Socket);
	132
3111df62 SS	133	# Generate hash of monitored files.
	134	%monitored_files = &Guardian::Base::GenerateMonitoredFiles(\%mainsettings, \%monitored_files);
	135
9c74e9bb SS	136	# Start worker threads.
9c74e9bb SS	137	&StartWorkers();
88d9af2c SS	138	}
	139
	140	#
	141	## Worker function.
	142	#
	143	## This function is responsible for monitoring modifications of the given logfile,
	144	## read them and pass them to the message parser.
	145	#
	146	## To get file modifications the inotify subsystem of the linux kernel is used.
	147	#
	148	## In order to prevent from permanently read and keep files opened, or dealing
	149	## with huge logfiles, at initialization time of the worker process, the file will
	150	## be opened once and the cursor position of the end of file (EOF) get stored. When
	151	## reading any newly added lines from the file, we directly can jump to the last
	152	## known position and get these lines. Afterwards, we store the current curser position
	153	## again, so we can do it in this way over and over again.
	154	#
	155	## All read lines get stored in an array, which will be passed to the Parser.
	156	#
	157	## If any response (action) from the parser get recieved, it will be put into the
	158	## shared event queue.
	159	#
	160	sub Worker ($) {
9c74e9bb SS	161	my $file = $_[0];
	162
	163	# Signal handler to kill worker.
	164	$SIG{'KILL'} = sub { threads->exit(); };
88d9af2c	165
88d9af2c	166	# Create inotify watcher.
c0a59a63	167	my $watcher = new Linux::Inotify2 or die "Could not use inotify. $!";
88d9af2c SS	168
88d9af2c SS	169	# Monitor the specified file.
c0a59a63	170	$watcher->watch("$file", IN_MODIFY) or die "Could not monitor $file. $!";
88d9af2c	171
9c74e9bb SS	172	# Switch watcher into non-blocking mode.
9c74e9bb SS	173	$watcher->blocking(0);
88d9af2c	174
c95dfa5b SS	175	# Log successfully spawned worker.
	176	$logger->Log("debug", "Spawned worker thread for: $file");
	177
9c74e9bb SS	178	# Infinite loop.
	179	while(1) {
	180	# Check for any events and perform them, if there
	181	# is a least one.
	182	if ($watcher->read) {
	183	my @message = ();
88d9af2c	184
3111df62 SS	185	# Obtain fileposition from hash.
	186	my $fileposition = $monitored_files{$file};
	187
9c74e9bb	188	# Open the file.
c0a59a63	189	open (FILE, $file) or die "Could not open $file. $!";
88d9af2c	190
9c74e9bb SS	191	# Seek to the last known position.
9c74e9bb SS	192	seek (FILE, $fileposition, 0);
88d9af2c	193
9c74e9bb SS	194	# Get the log message.
	195	while (my $line = <FILE>) {
	196	# Remove any newlines.
	197	chomp $line;
88d9af2c	198
9c74e9bb SS	199	# Add all lines to the message array.
	200	push (@message, $line);
	201	}
88d9af2c	202
3111df62 SS	203	{
	204	# Lock shared hash.
	205	lock(%monitored_files);
	206
	207	# Update fileposition.
	208	$monitored_files{$file} = tell(FILE);
	209	}
88d9af2c	210
9c74e9bb SS	211	# Close file.
9c74e9bb SS	212	close(FILE);
88d9af2c	213
9c74e9bb SS	214	# Send filename and message to the parser,
	215	# which will return if an action has to be performed.
	216	my @action = &Guardian::Parser::Parser("$file", @message);
88d9af2c	217
9c74e9bb SS	218	# Send the action to the main process and put it into
	219	# the queue.
	220	if (@action) {
	221	# Lock the queue.
	222	lock($queue);
	223
	224	# Put the required action into the queue.
	225	$queue->enqueue(@action);
	226	}
	227	} else {
	228	# Sleep for 10ms until the next round of the loop will start.
	229	sleep(0.01);
88d9af2c SS	230	}
	231	}
	232	}
	233
6abac3d4 SS	234	#
	235	## Socket function.
	236	#
	237	## This function uses the Socket module to create and listen to an UNIX socket.
	238	## It automatically accepts all incomming connections and pass the recieved
	239	## data messages to the the Message_Parser function which is also part of the
	240	## socket module.
	241	#
	242	## If a valid command has been sent through the socket, the corresponding event
	243	## will be enqueued into the shared event queue.
	244	#
	245	sub Socket () {
	246	# Create the Server socket by calling the responsible function.
	247	my $server = &Guardian::Socket::Server();
	248
c95dfa5b SS	249	# Log successfull creation of socket.
	250	$logger->Log("debug", "Listening to Socket...");
	251
6abac3d4 SS	252	# Accept incomming connections from the socket.
	253	while (my $connection = $server->accept()) {
	254	# Autoflush the socket after the data
	255	# has been recieved.
	256	$connection->autoflush(1);
	257
	258	# Gather all data from the connection.
	259	while (my $message = <$connection>) {
	260	# Remove any newlines.
	261	chomp($message);
	262
c95dfa5b SS	263	# Log recieved socket command.
	264	$logger->Log("debug", "Socket - Recieved message: $message");
	265
6abac3d4 SS	266	# Send the recieved data message to the
	267	# socket parser.
	268	my $action = &Guardian::Socket::Message_Parser($message);
	269
	270	# If the parser returns to perform an action,
	271	# add it to the main event queue.
	272	if ($action) {
	273	# Lock the queue.
	274	lock($queue);
	275
	276	# Enqueue the returned action.
	277	$queue->enqueue($action);
	278	}
	279	}
	280	}
	281	}
	282
915d9f45 SS	283	#
	284	## Function for capturing process signals.
	285	#
	286	## This function captures any sent process signals and will call various
	287	## actions, basend on the captured signal.
	288	#
	289	sub SignalHandler {
	290	$SIG{INT} = \&Shutdown;
	291	$SIG{TERM} = \&Shutdown;
	292	$SIG{QUIT} = \&Shutdown;
ba734c53	293	$SIG{HUP} = \&Reload;
915d9f45 SS	294	}
915d9f45 SS	295
9c74e9bb SS	296	#
	297	## Function to start the workers (threads) for all monitored files.
	298	#
3111df62	299	## This function will loop through the hash of monitored files and will
9c74e9bb SS	300	## spawn an own thread based worker for each file. Every created worker will
	301	## be added to the array of running workers.
	302	#
	303	sub StartWorkers () {
3111df62 SS	304	# Loop through the hash which contains the monitored files and start
	305	# a worker thread for each single one.
	306	foreach my $file (keys %monitored_files) {
c95dfa5b	307	$logger->Log("debug", "Starting worker thread for $file");
3111df62 SS	308	# Create worker thread for the file.
3111df62 SS	309	push @running_workers, threads->create(\&Worker,$file);
9c74e9bb SS	310	}
	311	}
	312
	313	#
	314	## Function to stop all running workers.
	315	#
	316	## This function is used to stop all currently running workers and will be
	317	## called when reloading or shutting down guardian.
	318	#
	319	sub StopWorkers () {
	320	# Loop through all running workers.
	321	foreach my $worker (@running_workers) {
	322	# Send the worker the "KILL" signal and detach the
	323	# thread so perl can do an automatically clean-up.
4d19939e	324	$worker->kill('KILL');
9c74e9bb	325	}
c95dfa5b	326	$logger->Log("debug", "All workers are stopped now...");
9c74e9bb SS	327	}
9c74e9bb SS	328
ba734c53 SS	329	#
	330	## Reload function.
	331	#
	332	## This function will get called if the signal handler recieves a "SIGHUP" signal,
	333	## or the reload command will be sent via socket connection. It is responsible for
	334	## reloading all configure options and stopping/starting the worker threads.
	335	#
	336	sub Reload () {
c95dfa5b SS	337	# Log reload.
	338	$logger->Log("info", "Reload configuration...");
	339
ba734c53 SS	340	# Stop all running workers.
	341	&StopWorkers();
	342
	343	# Re-read configuration file.
	344	%mainsettings = &Guardian::Config::UseConfig($cmdargs{"config"});
	345
fc555263	346	# Update Logger settings.
aab61123	347	$logger = Guardian::Logger->Init(%mainsettings);
fc555263 SS	348
	349	# Update logger object in mainsettings hash.
	350	$mainsettings{Logger} = $logger;
	351
ba734c53 SS	352	# Re-generate hash of monitored files.
	353	%monitored_files = &Guardian::Base::GenerateMonitoredFiles(\%mainsettings, \%monitored_files);
	354
	355	# Restart the worker threads.
	356	&StartWorkers();
	357	}
	358
915d9f45 SS	359	#
	360	## Shutdown function.
	361	#
	362	## This function is used to do a clean shutdown of guardian. It will be called
	363	## by the signal handler when recieving INT (2), QUIT (3) and TERM (15) signals.
	364	#
	365	sub Shutdown () {
c95dfa5b SS	366	# Log shutdown.
	367	$logger->Log("info", "Shutting down...");
	368
9c74e9bb SS	369	# Stop all workers.
	370	&StopWorkers();
	371
915d9f45 SS	372	# Remove socket file on exit.
	373	&Guardian::Socket::RemoveSocketFile();
	374
a9ef502c SS	375	# Sleep for one second to give perl some
	376	# time to proper clean up everything before
	377	# exiting.
	378	sleep(1);
	379
c95dfa5b SS	380	# Log good bye message.
	381	$logger->Log("debug", "Good Bye!");
	382
915d9f45 SS	383	# Exit guardian.
	384	exit;
	385	}