#!/usr/bin/perl
#
# SmoothWall CGIs
#
# This code is distributed under the terms of the GPL
#
# JC HERITIER
# page inspired from the initial firewalllog.dat
#
# Modified for IPFire by Christian Schmidt
#	                    and Michael Tremer (www.ipfire.org)

use strict;

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

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

require "${General::swroot}/ipblocklist-functions.pl";
require "${General::swroot}/ipblocklist/sources";

use POSIX();

my %cgiparams=();
my $errormessage = '';

my @shortmonths = ( 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug',
	'Sep', 'Oct', 'Nov', 'Dec' );
my @longmonths = ( $Lang::tr{'january'}, $Lang::tr{'february'}, $Lang::tr{'march'},
	$Lang::tr{'april'}, $Lang::tr{'may'}, $Lang::tr{'june'}, $Lang::tr{'july'}, $Lang::tr{'august'},
	$Lang::tr{'september'}, $Lang::tr{'october'}, $Lang::tr{'november'},
	$Lang::tr{'december'} );

my @now = localtime();
my $dow = $now[6];
my $doy = $now[7];
my $tdoy = $now[7];
my $year = $now[5]+1900;

$cgiparams{'DAY'} = $now[3];
$cgiparams{'MONTH'} = $now[4];
$cgiparams{'ACTION'} = '';

&Header::getcgihash(\%cgiparams);

my $start = -1;
if ($ENV{'QUERY_STRING'} && $cgiparams{'ACTION'} ne $Lang::tr{'update'})
{
	my @temp = split(',',$ENV{'QUERY_STRING'});
	$start = $temp[0];
	$cgiparams{'MONTH'} = $temp[1];
	$cgiparams{'DAY'} = $temp[2];
}

if (!($cgiparams{'MONTH'} =~ /^(0|1|2|3|4|5|6|7|8|9|10|11)$/) ||
    !($cgiparams{'DAY'} =~ /^(1|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16|17|18|19|20|21|22|23|24|25|26|27|28|29|30|31)$/))
{
	$cgiparams{'DAY'} = $now[3];
	$cgiparams{'MONTH'} = $now[4];
}
elsif($cgiparams{'ACTION'} eq '>>')
{
	my @temp_then=();
	my @temp_now = localtime(time);
	$temp_now[4] = $cgiparams{'MONTH'};
	$temp_now[3] = $cgiparams{'DAY'};
	@temp_then = localtime(POSIX::mktime(@temp_now) + 86400);
	## Retrieve the same time on the next day -
	## 86400 seconds in a day
	$cgiparams{'MONTH'} = $temp_then[4];
	$cgiparams{'DAY'} = $temp_then[3];
}
elsif($cgiparams{'ACTION'} eq '<<')
{
	my @temp_then=();
	my @temp_now = localtime(time);
	$temp_now[4] = $cgiparams{'MONTH'};
	$temp_now[3] = $cgiparams{'DAY'};
	@temp_then = localtime(POSIX::mktime(@temp_now) - 86400);
	## Retrieve the same time on the previous day -
	## 86400 seconds in a day
	$cgiparams{'MONTH'} = $temp_then[4];
	$cgiparams{'DAY'} = $temp_then[3];
}

if (($cgiparams{'DAY'} ne $now[3]) || ($cgiparams{'MONTH'} ne $now[4]))
{
	my @then = ();
	if ( (  $cgiparams{'MONTH'} eq $now[4]) && ($cgiparams{'DAY'} > $now[3]) ||
	     ( $cgiparams{'MONTH'} > $now[4] ) ) {
		@then = localtime(POSIX::mktime( 0, 0, 0, $cgiparams{'DAY'}, $cgiparams{'MONTH'}, $year - 1901 ));
	} else {
		@then = localtime(POSIX::mktime( 0, 0, 0, $cgiparams{'DAY'}, $cgiparams{'MONTH'}, $year - 1900 ));
	}
	$tdoy = $then[7];
	my $lastleap=($year-1)%4;
	if ($tdoy>$doy) {
		if ($lastleap == 0 && $tdoy < 60) {
			$doy=$tdoy+366;
		} else {
			$doy=$doy+365;
		}
	}
}

my $datediff=0;
my $dowd=0;
my $multifile=0;
if ($tdoy ne $doy) {
	$datediff=int(($doy-$tdoy)/7);
	$dowd=($doy-$tdoy)%7;
	if (($dow-$dowd)<1) {
		$datediff=$datediff+1;
	}
	if (($dow-$dowd)==0) {
		$multifile=1;
	}
}

my $monthstr = $shortmonths[$cgiparams{'MONTH'}];
my $longmonthstr = $longmonths[$cgiparams{'MONTH'}];
my $day = $cgiparams{'DAY'};
my $daystr='';
if ($day <= 9) {
	$daystr = " $day"; }
else {
	$daystr = $day;
}

my %lists;
my %directions;
my %sources = ();
my %settings = ();
&General::readhash("${General::swroot}/ipblocklist/settings", \%settings);

# Get all available blocklists.
my @blocklists = &IPblocklist::get_blocklists();

foreach my $blocklist (@blocklists)
{
	$lists{$blocklist} = {} if ($settings{$blocklist} eq 'on');
}

my $skip=0;
my $filestr='';
if ($datediff==0) {
	$filestr="/var/log/messages";
} else {
	$filestr="/var/log/messages.$datediff";
	$filestr = "$filestr.gz" if -f "$filestr.gz";
}

if (!(open (FILE,($filestr =~ /.gz$/ ? "gzip -dc $filestr |" : $filestr)))) {
	$errormessage = "$Lang::tr{'date not in logs'}: $filestr $Lang::tr{'could not be opened'}";
	$skip=1;
	# Note: This is in case the log does not exist for that date
}

my $lines = 0;
my $directions = 0;

if (!$skip)
{
	while (<FILE>)
	{
		if (/^${monthstr} ${daystr} ..:..:.. [\w\-]+ kernel:.*BLKLST_(\w+)\s*IN=(\w*)/)
		{
			my $list = $1;

			if ($2 =~ m/ppp|red/)
			{
				$lists{$list}{in}++;
				$directions{in}++;
			}
			else
			{
				$lists{$list}{out}++;
				$directions{out}++;
			}

			$lines++;
		}

	}
	close (FILE);
}

if ($multifile) {
	$datediff=$datediff-1;
	if ($datediff==0) {
		$filestr="/var/log/messages";
	} else {
		$filestr="/var/log/messages.$datediff";
		$filestr = "$filestr.gz" if -f "$filestr.gz";
	}
	if (!(open (FILE,($filestr =~ /.gz$/ ? "gzip -dc $filestr |" : $filestr)))) {
		$errormessage="$Lang::tr{'date not in logs'}: $filestr $Lang::tr{'could not be opened'}";
		$skip=1;
	}
	if (!$skip) {
		while (<FILE>) {
			if (/^${monthstr} ${daystr} ..:..:.. [\w\-]+ kernel:.*BLKLST_(\w+)\s*IN=(\w+)/)
			{
				my $list = $1;

				if ($2 =~ m/ppp|red/)
				{
					$lists{$list}{in}++;
					$directions{in}++;
				}
				else
				{
					$lists{$list}{out}++;
					$directions{out}++;
				}

				$lines++;
			}
		}
		close (FILE);
	}
}

my $MODNAME="fwlogs";

&Header::showhttpheaders();
&Header::openpage($Lang::tr{'ipblocklist logs'}, 1, '');
&Header::openbigbox('100%', 'left', '', $errormessage);


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

&Header::openbox('100%', 'left', "$Lang::tr{'settings'}");

print <<END
<form method='post' action='$ENV{'SCRIPT_NAME'}'>
<table width='100%'>
<tr>
	<td width='10%' class='base'>$Lang::tr{'month'}:&nbsp;</td>
	<td width='10%'>
	<select name='MONTH'>
END
;
my $month;
for ($month = 0; $month < 12; $month++)
{
	print "\t<option ";
	if ($month == $cgiparams{'MONTH'}) {
		print "selected='selected' ";
	}
	print "value='$month'>$longmonths[$month]</option>\n";
}
print <<END
	</select>
	</td>
	<td width='10%' class='base' align='right'>&nbsp;$Lang::tr{'day'}:&nbsp;</td>
	<td width='40%'>
	<select name='DAY'>
END
;
for ($day = 1; $day <= 31; $day++)
{
	print "\t<option ";
	if ($day == $cgiparams{'DAY'}) {
		print "selected='selected' ";
	}
	print "value='$day'>$day</option>\n";
}

print <<END
</select>
</td>
<td width='5%'  align='center'><input type='submit' name='ACTION' title='$Lang::tr{'day before'}' value='&lt;&lt;' /></td>
<td width='5%'  align='center'><input type='submit' name='ACTION' title='$Lang::tr{'day after'}' value='&gt;&gt;' /></td>
<td width='20%' align='right'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
</tr>
</table>
</form>
END
;

&Header::closebox();

&Header::openbox('100%', 'left', $Lang::tr{'firewall log'});
print "<p><b>$Lang::tr{'ipblocklist hits'} $longmonthstr $daystr: $lines</b></p>";

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

my @lists = sort keys (%lists);

print <<END
<table width='100%' class='tbl'>
<tr>
<th align='center' class='boldbase' rowspan='2'></th>
<th align='left'   class='boldbase' rowspan='2'><b>$Lang::tr{'ipblocklist id'}</b></th>
<th align='left'   class='boldbase' rowspan='2'><b>$Lang::tr{'ipblocklist category'}</b></th>
<th align='center' class='boldbase' colspan='2'><b>$Lang::tr{'ipblocklist input'}</b></th>
<th align='center' class='boldbase' colspan='2'><b>$Lang::tr{'ipblocklist output'}</b></th>
</tr>
<tr>
<th align='center' class='boldbase'>$Lang::tr{'count'}</th>
<th align='center' class='boldbase'>$Lang::tr{'percentage'}</th>
<th align='center' class='boldbase'>$Lang::tr{'count'}</th>
<th align='center' class='boldbase'>$Lang::tr{'percentage'}</th>
</tr>
END
;

$lines = 0;
my $lists = join ',', @lists;

foreach my $list (@lists)
{
	my $col = ($lines++ % 2) ? "bgcolor='$color{'color20'}'" : "bgcolor='$color{'color22'}'";
	my $category = exists( $IPblocklist::List::sources{$list}) ? $Lang::tr{"ipblocklist category $IPblocklist::List::sources{$list}{'category'}"} : '&nbsp;';

	print "<tr>";

	print "<td align='center' $col><form method='post' action='showrequestfromblocklist.dat'><input type='hidden' name='MONTH' value='$cgiparams{'MONTH'}'> <input type='hidden' name='DAY' value='$cgiparams{'DAY'}'> <input type='hidden' name='blocklist' value='$list'><input type='hidden' name='blocklists' value='$lists'> <input type='submit' value='$Lang::tr{'details'}'></form></td>";

	if (exists($IPblocklist::List::sources{$list}) and $IPblocklist::List::sources{$list}{'info'})
	{
		print "<td $col><a href='$IPblocklist::List::sources{$list}{info}' target='_blank'>$list</a></td>";
	}
	else
	{
		print "<td $col>$list</td>";
	}

	print "<td $col>$category</td>";

	foreach my $direction ('in', 'out')
	{
		my $count   = $lists{$list}{$direction} || 0;
		my $percent = $directions{$direction} > 0 ? $count * 100 / $directions{$direction} : 0;
		$percent = sprintf("%.f", $percent);
		print "<td align='center' class='boldbase' $col>$count</th>";
		print "<td align='center' class='boldbase' $col>$percent%</th>";
	}

	print "</tr>";
}
print <<END
</table>
END
;

&Header::closebox();
&Header::closebigbox();
&Header::closepage();

sub checkversion {
	#Automatic Updates is disabled
	return "0","0";
}