ids.cgi: Use pure perl for directory listing

[people/pmueller/ipfire-2.x.git] / html / cgi-bin / ids.cgi

#!/usr/bin/perl
###############################################################################
#                                                                             #
# IPFire.org - A linux based firewall                                         #
# Copyright (C) 2007-2015  IPFire Team  <info@ipfire.org>                     #
#                                                                             #
# 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;

# enable only the following on debugging purpose
#use warnings;
#use CGI::Carp 'fatalsToBrowser';
use File::Copy;

require '/var/ipfire/general-functions.pl';
require "${General::swroot}/lang.pl";
require "${General::swroot}/header.pl";

sub refreshpage{&Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='1;'>" );print "<center><img src='/images/clock.gif' alt='' /><br/><font color='red'>$Lang::tr{'pagerefresh'}</font></center>";&Header::closebox();}

my %color = ();
my %mainsettings = ();
&General::readhash("${General::swroot}/main/settings", \%mainsettings);
&General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);

my %snortsettings=();
my %checked=();
my %selected=();
my %netsettings=();
our $errormessage = '';
our $results = '';
our $tempdir = '';
our $url='';
&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);

&Header::showhttpheaders();

$snortsettings{'ENABLE_SNORT'} = 'off';
$snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
$snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
$snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
$snortsettings{'ACTION'} = '';
$snortsettings{'RULES'} = '';
$snortsettings{'OINKCODE'} = '';
$snortsettings{'INSTALLDATE'} = '';
$snortsettings{'FILE'} = '';

&Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});

####################### Added for snort rules control #################################

my $snortrulepath = "/etc/snort/rules";
my @snortconfig;
my $restartsnortrequired = 0;
my %snortrules;
my $rule = '';
my $table1colour = '';
my $table2colour = '';
my $var = '';
my $value = '';
my $tmp = '';
my $linkedrulefile = '';
my $border = '';
my $checkboxname = '';

# Grab all available snort rules.
my @rules;

# Open snort rules directory and do a directory listing.
opendir(DIR, $snortrulepath) or die $!;
	# Loop through the direcory.
	while (my $file = readdir(DIR)) {

		# We only want files.
		next unless (-f "$snortrulepath/$file");

		# Ignore empty files.
		next if (-z "$snortrulepath/$file");

		# Use a regular expression to find files ending in .conf
		next unless ($file =~ m/\.rules$/);

		# Add the file to rulecategories array.
		push(@rules, $file);
	}

closedir(DIR);

if (-e "/etc/snort/snort.conf") {


	# Open snort.conf file, read it in, close it, and re-open for writing
	open(FILE, "/etc/snort/snort.conf") or die 'Unable to read snort config file.';
	@snortconfig = <FILE>;
	close(FILE);
	open(FILE, ">/etc/snort/snort.conf") or die 'Unable to write snort config file.';

	foreach (@rules) {
	chomp $_;
	my $temp = join(";",@snortconfig);
    if ( $temp =~ /$_/ ){next;}
    else { push(@snortconfig,"#include \$RULE_PATH/".$_);}
	}

	# Loop over each line
	foreach my $line (@snortconfig) {
		# Trim the line
		chomp $line;

		# Check for a line with .rules
		if ($line =~ /\.rules$/) {
			# Parse out rule file name
			$rule = $line;
			$rule =~ s/\$RULE_PATH\///i;
			$rule =~ s/ ?include ?//i;
			$rule =~ s/\#//i;
			my $snortrulepathrule = "$snortrulepath/$rule";

			# Open rule file and read in contents
			open(RULEFILE, "$snortrulepath/$rule") or die "Unable to read snort rule file for reading => $snortrulepath/$rule.";
			my @snortrulefile = <RULEFILE>;
			close(RULEFILE);
			open(RULEFILE, ">$snortrulepath/$rule") or die "Unable to write snort rule file for writing $snortrulepath/$rule";

			# Local vars
			my $dashlinecnt = 0;
			my $desclook = 1;
			my $snortruledesc = '';
			my %snortruledef = ();
			my $rulecnt = 1;

			# Loop over rule file contents
			foreach my $ruleline (@snortrulefile) {
				chomp $ruleline;

				# If still looking for a description
				if ($desclook) {
					# If line does not start with a # anymore, then done looking for a description
					if ($ruleline !~ /^\#/) {
						$desclook = 0;
					}

					# If see more than one dashed line, (start to) create rule file description
					if ($dashlinecnt > 1) {
						# Check for a line starting with a #
						if ($ruleline =~ /^\#/ and $ruleline !~ /^\#alert/) {
							# Create tempruleline
							my $tempruleline = $ruleline;

							# Strip off # and clean up line
							$tempruleline =~ s/\# ?//i;

							# Check for part of a description
							if ($snortruledesc eq '') {
								$snortruledesc = $tempruleline;
							} else {
								$snortruledesc .= " $tempruleline";
							}
						} else {
							# Must be done
							$desclook = 0;
						}
					}

					# If have a dashed line, increment count
					if ($ruleline =~ /\# ?\-+/) {
						$dashlinecnt++;
					}
				} else {
					# Parse out rule file rule's message for display
					if ($ruleline =~ /(msg\:\"[^\"]+\";)/) {
						my $msg = '';
						$msg = $1;
						$msg =~ s/msg\:\"//i;
						$msg =~ s/\";//i;
						$snortruledef{$rulecnt}{'Description'} = $msg;

						# Check for 'Save' and rule file displayed in query string
						if (($snortsettings{'ACTION'} eq $Lang::tr{'update'}) && ($ENV{'QUERY_STRING'} =~ /$rule/i)) {
							# Check for a disable rule which is now enabled, or an enabled rule which is now disabled
							if ((($ruleline =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"})) || (($ruleline !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}))) {
								$restartsnortrequired = 1;
							}

							# Strip out leading # from rule line
							$ruleline =~ s/\# ?//i;

							# Check if it does not exists (which means it is disabled), append a #
							if (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}) {
								$ruleline = "#"." $ruleline";
							}
						}

						# Check if ruleline does not begin with a #, so it is enabled
						if ($ruleline !~ /^\#/) {
							$snortruledef{$rulecnt++}{'State'} = 'Enabled';
						} else {
							# Otherwise it is disabled
							$snortruledef{$rulecnt++}{'State'} = 'Disabled';
						}
					}
				}

				# Print ruleline to RULEFILE
				print RULEFILE "$ruleline\n";
			}

			# Close RULEFILE
			close(RULEFILE);

			# Check for 'Save'
			if ($snortsettings{'ACTION'} eq $Lang::tr{'update'}) {
				# Check for a disable rule which is now enabled, or an enabled rule which is now disabled
				if ((($line =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule"})) || (($line !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule"}))) {
					$restartsnortrequired = 1;
				}

				# Strip out leading # from rule line
				$line =~ s/\# ?//i;

				# Check if it does not exists (which means it is disabled), append a #
				if (!exists $snortsettings{"SNORT_RULE_$rule"}) {
					$line = "# $line";
				}

			}

			# Check for rule state
			if ($line =~ /^\#/) {
				$snortrules{$rule}{"State"} = "Disabled";
			} else {
				$snortrules{$rule}{"State"} = "Enabled";
			}

			# Set rule description
			$snortrules{$rule}{"Description"} = $snortruledesc;

			# Loop over sorted rules
			foreach my $ruledef (sort {$a <=> $b} keys(%snortruledef)) {
				$snortrules{$rule}{"Definition"}{$ruledef}{'Description'} = $snortruledef{$ruledef}{'Description'};
				$snortrules{$rule}{"Definition"}{$ruledef}{'State'} = $snortruledef{$ruledef}{'State'};
			}

			$snortruledesc = '';
			print FILE "$line\n";
		} elsif ($line =~ /var RULE_PATH/) {
			($tmp, $tmp, $snortrulepath) = split(' ', $line);
			print FILE "$line\n";
		} else {
			print FILE "$line\n";
		}
	}
	close(FILE);

	if ($restartsnortrequired) {
		system('/usr/local/bin/snortctrl restart >/dev/null');
	}
}

#######################  End added for snort rules control  #################################

if ($snortsettings{'OINKCODE'} ne "") {
	$errormessage = $Lang::tr{'invalid input for oink code'} unless ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/);
}

if (!$errormessage) {
	if ($snortsettings{'RULES'} eq 'subscripted') {
		$url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
	} elsif ($snortsettings{'RULES'} eq 'registered') {
		$url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
	} elsif ($snortsettings{'RULES'} eq 'community') {
		$url=" https://www.snort.org/rules/community";
	} else {
		$url="http://rules.emergingthreats.net/open/snort-2.9.0/emerging.rules.tar.gz";
	}

	if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" ) {
		&General::writehash("${General::swroot}/snort/settings", \%snortsettings);
		if ($snortsettings{'ENABLE_SNORT'} eq 'on')
		{
			system ('/usr/bin/touch', "${General::swroot}/snort/enable");
		} else {
			unlink "${General::swroot}/snort/enable";
		}
		if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
		{
			system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
		} else {
			unlink "${General::swroot}/snort/enable_green";
		}
		if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
		{
			system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
		} else {
			unlink "${General::swroot}/snort/enable_blue";
		}
		if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
		{
			system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
		} else {
			unlink "${General::swroot}/snort/enable_orange";
		}
		if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
		{
			system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
		} else {
			unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
		}

		system('/usr/local/bin/snortctrl restart >/dev/null');
	}

	# INSTALLMD5 is not in the form, so not retrieved by getcgihash
	&General::readhash("${General::swroot}/snort/settings", \%snortsettings);

	if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
		my @df = `/bin/df -B M /var`;
		foreach my $line (@df) {
			next if $line =~ m/^Filesystem/;
			my $return;

			if ($line =~ m/dev/ ) {
				$line =~ m/^.* (\d+)M.*$/;
				my @temp = split(/ +/,$line);
				if ($1<300) {
					$errormessage = "$Lang::tr{'not enough disk space'} < 300MB, /var $1MB";
				} else {
					if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
						&downloadrulesfile();
						sleep(3);
						$return = `cat /var/tmp/log 2>/dev/null`;

					}

					if ($return =~ "ERROR") {
						$errormessage = "<br /><pre>".$return."</pre>";
					} else {
						system("/usr/local/bin/oinkmaster.pl -v -s -u file:///var/tmp/snortrules.tar.gz -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules >>/var/tmp/log 2>&1 &");
						sleep(2);
					}
				}
			}
		}
	}
}

$checked{'ENABLE_SNORT'}{'off'} = '';
$checked{'ENABLE_SNORT'}{'on'} = '';
$checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
$checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
$checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
$checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
$checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
$checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
$checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
$checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
$checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
$checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
$selected{'RULES'}{'nothing'} = '';
$selected{'RULES'}{'community'} = '';
$selected{'RULES'}{'emerging'} = '';
$selected{'RULES'}{'registered'} = '';
$selected{'RULES'}{'subscripted'} = '';
$selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";

&Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');

####################### Added for snort rules control #################################
print "<script type='text/javascript' src='/include/snortupdateutility.js'></script>";
print <<END
<style type="text/css">
<!--
.section {
	border: groove;
}
.row1color {
	border: ridge;
	background-color: $color{'color22'};
}
.row2color {
	border: ridge;
	background-color: $color{'color20'};
}
.rowselected {
	border: double #FF0000;
	background-color: #DCDCDC;
}
-->
</style>
END
;
#######################  End added for snort rules control  #################################

&Header::openbigbox('100%', 'left', '', $errormessage);

###############
# DEBUG DEBUG
# &Header::openbox('100%', 'left', 'DEBUG');
# my $debugCount = 0;
# foreach my $line (sort keys %snortsettings) {
# print "$line = $snortsettings{$line}<br />\n";
# $debugCount++;
# }
# print "&nbsp;Count: $debugCount\n";
# &Header::closebox();
# DEBUG DEBUG
###############

if ($errormessage) {
	&Header::openbox('100%', 'left', $Lang::tr{'error messages'});
	print "<class name='base'>$errormessage\n";
	print "&nbsp;</class>\n";
	&Header::closebox();
}

my $return = `pidof oinkmaster.pl -x`;
chomp($return);
if ($return) {
	&Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='10;'>" );
	print <<END;
	<table>
		<tr><td>
				<img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' />&nbsp;
			<td>
				$Lang::tr{'snort working'}
		<tr><td colspan='2' align='center'>
			<form method='post' action='$ENV{'SCRIPT_NAME'}'>
				<input type='image' alt='$Lang::tr{'reload'}' title='$Lang::tr{'reload'}' src='/images/view-refresh.png' />
			</form>
		<tr><td colspan='2' align='left'><pre>
END
	my @output = `tail -20 /var/tmp/log`;
	foreach (@output) {
		print "$_";
	}
	print <<END;
			</pre>
		</table>
END
	&Header::closebox();
	&Header::closebigbox();
	&Header::closepage();
	exit;
	refreshpage();
}

&Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'});
print <<END
<form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
<tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
END
;
if ($netsettings{'BLUE_DEV'} ne '') {
  print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />   BLUE Snort";
}
if ($netsettings{'ORANGE_DEV'} ne '') {
  print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />   ORANGE Snort";
}
  print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />   RED Snort";

print <<END
</td></tr>
<tr>
	<td><br><br></td>
</tr>
<tr>
	<td><b>$Lang::tr{'ids rules update'}</b></td>
</tr>
<tr>
	<td><select name='RULES'>
				<option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
				<option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option>
				<option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
				<option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
				<option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
			</select>
	</td>
</tr>
<tr>
	<td><br />
		$Lang::tr{'ids rules license'} <a href='https://www.snort.org/subscribe' target='_blank'>www.snort.org</a>$Lang::tr{'ids rules license1'}<br /><br />
		$Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}
	</td>
</tr>
<tr>
	<td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
</tr>
<tr>
	<td width='30%' align='left'><br><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
END
;
if ( -e "/var/tmp/snortrules.tar.gz"){
	my @Info = stat("/var/tmp/snortrules.tar.gz");
	$snortsettings{'INSTALLDATE'} = localtime($Info[9]);
}
print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";

print <<END
</tr>
</table>
<br><br>
<table width='100%'>
<tr>
	<td align='right'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
</tr>
</table>
</form>
END
;

if ($results ne '') {
	print "$results";
}

&Header::closebox();

####################### Added for snort rules control #################################
if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable_green" || -e "${General::swroot}/snort/enable_blue" || -e "${General::swroot}/snort/enable_orange" ) {
	&Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
		# Output display table for rule files
		print "<table width='100%'><tr><td valign='top'><table>";

		print "<form method='post'>";

		# Local vars
		my $ruledisplaycnt = 1;
		my $rulecnt = keys %snortrules;
		$rulecnt++;
		$rulecnt = $rulecnt / 2;

		# Loop over each rule file
		foreach my $rulefile (sort keys(%snortrules)) {
			my $rulechecked = '';

			# Hide inkompatible Block rules
			if ($rulefile =~'-BLOCK.rules') {
				next;
			}

			# Check if reached half-way through rule file rules to start new column
 		if ($ruledisplaycnt > $rulecnt) {
				print "</table></td><td valign='top'><table>";
				$ruledisplaycnt = 0;
			}

			# Check if rule file is enabled
			if ($snortrules{$rulefile}{"State"} eq 'Enabled') {
				$rulechecked = 'CHECKED';
			}

			# Create rule file link, vars array, and display flag
			my $rulefilelink = "?RULEFILE=$rulefile";
			my $rulefiletoclose = '';
			my @queryvars = ();
			my $displayrulefilerules = 0;

			# Check for passed in query string
			if ($ENV{'QUERY_STRING'}) {
				# Split out vars
				@queryvars = split(/\&/, $ENV{'QUERY_STRING'});

				# Loop over values
				foreach $value (@queryvars) {
					# Split out var pairs
					($var, $linkedrulefile) = split(/=/, $value);

					# Check if var is 'RULEFILE'
					if ($var eq 'RULEFILE') {
						# Check if rulefile equals linkedrulefile
						if ($rulefile eq $linkedrulefile) {
							# Set display flag
							$displayrulefilerules = 1;

							# Strip out rulefile from rulefilelink
							$rulefilelink =~ s/RULEFILE=$linkedrulefile//g;
						} else {
							# Add linked rule file to rulefilelink
							$rulefilelink .= "&RULEFILE=$linkedrulefile";
						}
					}
				}
			}

			# Strip out extra & & ? from rulefilelink
			$rulefilelink =~ s/^\?\&/\?/i;

			# Check for a single '?' and replace with page for proper link display
			if ($rulefilelink eq '?') {
				$rulefilelink = "ids.cgi";
			}

			# Output rule file name and checkbox
			print "<tr><td class='base' valign='top'><input type='checkbox' NAME='SNORT_RULE_$rulefile' $rulechecked> <a href='$rulefilelink'>$rulefile</a></td></tr>";
			print "<tr><td class='base' valign='top'>";

			# Check for empty 'Description'
			if ($snortrules{$rulefile}{'Description'} eq '') {
				print "<table width='100%'><tr><td class='base'>No description available</td></tr>";
			} else {
				# Output rule file 'Description'
				print "<table width='100%'><tr><td class='base'>$snortrules{$rulefile}{'Description'}</td></tr>";
			}

			# Check for display flag
			if ($displayrulefilerules) {
				# Rule file definition rule display
				print "<tr><td class='base' valign='top'><table border='0'><tr>";

				# Local vars
			 	my $ruledefdisplaycnt = 0;
				my $ruledefcnt = keys %{$snortrules{$rulefile}{"Definition"}};
				$ruledefcnt++;
				$ruledefcnt = $ruledefcnt / 2;

				# Loop over rule file rules
				foreach my $ruledef (sort {$a <=> $b} keys(%{$snortrules{$rulefile}{"Definition"}})) {
					# Local vars
					my $ruledefchecked = '';

					# If have display 2 rules, start new row
					if (($ruledefdisplaycnt % 2) == 0) {
						print "</tr><tr>";
						$ruledefdisplaycnt = 0;
					}

					# Check for rules state
					if ($snortrules{$rulefile}{'Definition'}{$ruledef}{'State'} eq 'Enabled') {
						$ruledefchecked = 'CHECKED';
					}

					# Create rule file rule's checkbox
					$checkboxname = "SNORT_RULE_$rulefile";
					$checkboxname .= "_$ruledef";
					print "<td class='base'><input type='checkbox' NAME='$checkboxname' $ruledefchecked> $snortrules{$rulefile}{'Definition'}{$ruledef}{'Description'}</td>";

					# Increment count
					$ruledefdisplaycnt++;
				}

				# If do not have second rule for row, create empty cell
				if (($ruledefdisplaycnt % 2) != 0) {
					print "<td class='base'></td>";
				}

				# Close display table
				print "</tr></table></td></tr>";
		}

			# Close display table
			print "</table>";

			# Increment ruledisplaycnt
		$ruledisplaycnt++;
		}
	print "</td></tr></table></td></tr></table>";
	print <<END
<table width='100%'>
<tr>
	<td width='100%' align='right'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
		&nbsp; <!-- space for future online help link -->
	</td>
</tr>
</table>
</form>
END
;
	&Header::closebox();
}

#######################  End added for snort rules control  #################################
&Header::closebigbox();
&Header::closepage();

sub downloadrulesfile {
	my $peer;
	my $peerport;

	unlink("/var/tmp/log");

	unless (-e "${General::swroot}/red/active") {
		$errormessage = $Lang::tr{'could not download latest updates'};
		return undef;
	}

	my %proxysettings=();
	&General::readhash("${General::swroot}/proxy/settings", \%proxysettings);

	if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
		($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
	}

	if ($peer) {
		system("wget -r --proxy=on --proxy-user=$proxysettings{'UPSTREAM_USER'} --proxy-passwd=$proxysettings{'UPSTREAM_PASSWORD'} -e http_proxy=http://$peer:$peerport/ -o /var/tmp/log --output-document=/var/tmp/snortrules.tar.gz $url");
	} else {
		system("wget -r -o /var/tmp/log --output-document=/var/tmp/snortrules.tar.gz $url");
	}
}