#!/usr/bin/perl
#
# SmoothWall CGIs
#
# This code is distributed under the terms of the GPL
#
# (c) The SmoothWall Team
#
# $Id: log.dat,v 1.6.2.22 2006/01/03 12:47:17 franck78 Exp $
#

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";

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

use POSIX();

my %cgiparams=();
my %logsettings=();
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'} = '';
$cgiparams{'SECTION'} = 'ipfire';

my %sections = (
        'apcupsd' => '(apcupsd\[.*?\]: )',
        'auth' => '(\w+\(pam_unix\)\[.*\]: )',
        'wio' => '(wio:|wio\[.*\])',
        'captive' => '(Captive:)',
        'clamav' => '(clamd\[.*\]: |freshclam\[.*\]: )',
        'collectd' => '(collectd\[.*\]: )',
        'cron' => '(fcron\[.*\]: )',
        'ddns' => '(ddns\[\d+\]:)',
        'dhcp' => '(dhcpd: )',
        'dma' => '(dma: |dma\[.*\]: |postfix/\w*\[\d*\]: )',
        'dns' => '(knot_resolver.*: |supervisord: |kresd\[.*\]: |unbound: \[.*?\])',
        'guardian' => '(guardian\[.*\]: )',
        'haproxy' => '(haproxy\[.*?\]: )',
        'ipblocklist' => '(ipblocklist: )',
        'ipfire' => '(ipfire: )',
        'ipsec' => '(ipsec_[\w_]+: |pluto\[.*\]: |charon: |vpnwatch: )',
        'kernel' => '(kernel: (?!DROP_))',
        'monit' => '(monit\[.*?\]: )',
        'ntp' => '(ntpd(?:ate)?\[.*\]: )',
        'nut' => '(upsmon\[.*?\]: )',
        'oinkmaster' => '(oinkmaster\[.*\]: )',
        'openvpn' => '(openvpnserver\[.*\]: |.*n2n\[.*\]: )',
        'pakfire' => '(pakfire:)',
        'red' => '(red:|pppd\[.*\]: |chat\[.*\]|pppoe\[.*\]|pptp\[.*\]|pppoa\[.*\]|pppoa3\[.*\]|pppoeci\[.*\]|ipppd|ipppd\[.*\]|kernel: ippp\d|kernel: isdn.*|ibod\[.*\]|dhcpcd\[.*\]|modem_run\[.*\])',
        'samba' => '(nmbd|smbd|winbind)\[\d+\]:',
        'suricata' => '(suricata: )',
        'squid' => '(squid\[.*\]: |squid: )',
        'ssh' => '(sshd(?:\(.*\))?\[.*\]: |sshd-session(?:\(.*\))?\[.*\]:)',
        'urlfilter bl' => '(installpackage\[urlfilter\]: )',
        'wireless' => '(hostapd:|kernel: ath.*:|kernel: wifi[0-9]:)',
		'zabbix_agentd' => '(zabbix_agentd\[.*?\]: )'
	 );

# Translations for the %sections array.
my %trsections = (
        'apcupsd' => 'APCUPS',
        'auth' => "$Lang::tr{'loginlogout'}",
        'wio' => 'Who Is Online?',
        'captive' => $Lang::tr{'Captive'},
        'clamav' => 'ClamAV',
        'collectd' => 'Collectd',
        'cron' => 'Cron',
        'ddns' => "$Lang::tr{'dynamic dns'}",
        'dhcp' => "$Lang::tr{'dhcp server'}",
        'dma' => 'Mail',
	'dns' => $Lang::tr{'dns title'},
        'guardian' => "$Lang::tr{'guardian'}",
        'haproxy' => 'HAProxy',
        'ipblocklist' => "$Lang::tr{'ipblocklist'}",
        'ipfire' => 'IPFire',
        'ipsec' => 'IPSec',
        'kernel' => "$Lang::tr{'kernel'}",
        'monit' => 'Monit',
        'ntp' => 'NTP',
        'nut' => 'NUT',
        'oinkmaster' => 'Oinkmaster',
        'openvpn' => 'OpenVPN',
        'pakfire' => 'Pakfire',
        'red' => 'RED',
        'samba' => $Lang::tr{'samba'},
        'suricata' => "$Lang::tr{'intrusion detection'}",
        'squid' => "$Lang::tr{'web proxy'}",
        'ssh' => 'SSH',
        'urlfilter bl' => 'URLFilter Blacklist',
        'wireless' => 'Wireless',
		'zabbix_agentd' => 'Zabbix Agent'
	);


&Header::getcgihash(\%cgiparams);
$logsettings{'LOGVIEW_REVERSE'} = 'off';
&General::readhash("${General::swroot}/logging/settings", \%logsettings);
${Header::viewsize} = defined ($logsettings{'LOGVIEW_VIEWSIZE'}) ? $logsettings{'LOGVIEW_VIEWSIZE'} : 150;

my $start = ($logsettings{'LOGVIEW_REVERSE'} eq 'on') ? 0x7FFFF000 : 0; #index of firts line number to display

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];
	$cgiparams{'SECTION'} = $temp[3];
}

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

# Find in which file.gz is the log. Can be calculated because WEEKLY ROTATING of access.log
my $gzindex;
my $date = $cgiparams{'DAY'} == 0 ? '' :  $cgiparams{'DAY'} <= 9 ? "0$cgiparams{'DAY'}" : "$cgiparams{'DAY'}";

{
    my $xday;

    # Calculate time. If future date, calculate for past year !!!
    if (( $cgiparams{'MONTH'} eq $now[4]) && ($cgiparams{'DAY'} > $now[3]) ||
        ( $cgiparams{'MONTH'}  > $now[4] ) ) {
        $xday = POSIX::mktime( 0, 0, 0, $cgiparams{'DAY'}, $cgiparams{'MONTH'}, $year - 1901 );
        $date = "$longmonths[$cgiparams{'MONTH'}] $date, ". int($year-1);
    } else {
        $xday = POSIX::mktime( 0, 0, 0, $cgiparams{'DAY'}, $cgiparams{'MONTH'}, $year - 1900 );
        $date = "$longmonths[$cgiparams{'MONTH'}] $date, $year";
    }

    # calculate end of active week (saturday 23H59)
    my @then = ();
    @then = localtime(time());
    my $sunday = POSIX::mktime( 0, 0, 0, $then[3], $then[4], $then[5]);
    $sunday += (6-$then[6]) * 86400;

    # Convert delta in second to full weeks
	$gzindex = int (($sunday-$xday)/604800 );
}

my $monthstr = $shortmonths[$cgiparams{'MONTH'}];
my $daystr =  $cgiparams{'DAY'} == 0 ?  '..' : $cgiparams{'DAY'} <= 9 ? " $cgiparams{'DAY'}" : "$cgiparams{'DAY'}";
my $section = $sections{$cgiparams{'SECTION'}};

my $lines = 0;
my @log=();

my $loop = 1;
my $filestr = 0;
my $lastdatetime;           # for debug
my $search_for_end = 0;

while ($gzindex >=0 && $loop) {
        # calculate file name
        if ($gzindex == 0) {
            $filestr = "/var/log/messages";
            $filestr = "/var/log/mail" if (${section} =~ 'dma');
        } else {
            $filestr = "/var/log/messages.$gzindex";
            $filestr = "/var/log/mail.$gzindex" if (${section} =~ 'dma');
    	    $filestr = "$filestr.gz" if -f "$filestr.gz";
        }
	# now read file if existing
	if (open (FILE,($filestr =~ /.gz$/ ? "gzip -dc $filestr |" : $filestr))) {
	    #&General::log("reading $filestr");
	    READ:while (<FILE>) {
		my $line = $_;
	 	if ($line =~ /^${monthstr} ${daystr} ..:..:.. [\w\-\.]+ ${section}(.*)/) {
		    # when standard viewing, just keep in memory the correct slice
		    # it starts a '$start' and size is $viewport
		    # If export, then keep all lines...
		    if ($cgiparams{'ACTION'} eq $Lang::tr{'export'}){
			$log[$lines++] = "$line";
		    } else {
			if ($lines++ < ($start + $Header::viewsize)) {
			    push(@log,"$line");
			    if (@log > $Header::viewsize) {
			        shift (@log);
			    }
			#} else { don't do this optimisation, need to count lines !
			    #    $datetime = $maxtime; # we have read viewsize lines, stop main loop
			    #    last READ;           # exit read file
			}
		    }
		    $search_for_end = 1;	# we find the start of slice, can look for end now
		} else {
		    if ($search_for_end == 1) {
			#finish read files when date is over (test month equality only)
	 		$line =~ /^(...) (..) ..:..:..*$/;
			$loop = 0 if ( ($1 ne $monthstr) || ( ($daystr ne '..') && ($daystr ne $2) ) );
		    }
		}
	    }
	    close (FILE);
	}
	$gzindex--;     # will try next gz file eg 40,39,38,.... because it may have holes when ipcop stopped
	        	# for a long time
}# while

#  $errormessage = "$Lang::tr{'date not in logs'}: $filestr $Lang::tr{'could not be opened'}";

if ($cgiparams{'ACTION'} eq $Lang::tr{'export'})
{
	print "Content-type: text/plain\n\n";
	print "IPFire diagnostics\r\n";
	print "$Lang::tr{'section'}: $cgiparams{'SECTION'}\n";
	print "$Lang::tr{'date'}: $date\r\n\r\n";

	if ($logsettings{'LOGVIEW_REVERSE'} eq 'on') { @log = reverse @log; }

	foreach $_ (@log)
	{
		/^... (..) (..:..:..) [\w\-\.]+ ${section}(.*)$/;
		my $day =  $1;
		$day =~ tr / /0/;
		my $time = $cgiparams{'DAY'} ? "$2" : "$day/$2" ;
  print "$time $3 $4\r\n";
	}
	exit 0;
}

&Header::showhttpheaders();

&Header::openpage($Lang::tr{'system 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{'section'}:&nbsp;</td>
	<td width='20%'>
	<select name='SECTION'>
END
;
foreach $section (sort {$trsections{$a} cmp $trsections{$b}} keys %sections) {
	print "\t<option ";
	if ($section eq $cgiparams{'SECTION'}) {
		print "selected='selected' "; }
	print "value='$section'>$trsections{$section}</option>\n";
}
print <<END
	</select>
	</td>
	<td width='10%' class='base' align='right'>$Lang::tr{'month'}:&nbsp;</td>
	<td width='10%'>
	<select name='MONTH'>
END
;
for (my $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;$Lang::tr{'day'}:&nbsp;</td>
	<td width='40%'>
	<select name='DAY'>
END
;
print "<option value='0'>$Lang::tr{'all'}</option>\n";
for (my $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='$Lang::tr{'day after'}' value='&gt;&gt;' /></td>
<td width='10%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
<td width='10%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'export'}' /></td>
</tr>
</table>
</form>
END
;

&Header::closebox();

&Header::openbox('100%', 'left', $Lang::tr{'log'});
print "<p><b>$Lang::tr{'total hits for log section'} $cgiparams{'SECTION'} $date: $lines</b></p>";

$start = $lines - ${Header::viewsize} if ($start >= $lines - ${Header::viewsize});
$start = 0 if ($start < 0);

my $prev;
    if ($start == 0) {
	$prev = -1;
    } else {
	$prev = $start - ${Header::viewsize};
	$prev = 0 if ( $prev < 0);
    }

my $next;
    if ($start == $lines - ${Header::viewsize}) {
        $next = -1;
    } else {
        $next = $start + ${Header::viewsize};
        $next = $lines - ${Header::viewsize} if ($next >= $lines - ${Header::viewsize});
    }

if ($logsettings{'LOGVIEW_REVERSE'} eq 'on') { @log = reverse @log; }
if ($lines != 0) { &oldernewer(); }

print <<END
<table class='tbl'>
	<tr>
		<th width='10%' align='center'>$Lang::tr{'time'}</th>
		<th width='15%' align='center'>$Lang::tr{'section'}</th>
		<th width='75%'>&nbsp;</th>
	</tr>
END
;

foreach $_ (@log)
{
	/^... (..) (..:..:..) [\w\-\.]+ ${section}(.*)$/;
	my $day =  $1;
	$day =~ tr / /0/;
	my $time = $cgiparams{'DAY'} ? "$2" : "$day/$2" ;
	my $sec = $3;
	my $data = &Header::escape($4);

	print <<END;
		<tr>
			<td align='center'>
				$time
			</td>

			<td>
				$sec
			</td>

			<td>
				$data
			</td>
		</tr>
END
}
print "</table>";

&oldernewer();

&Header::closebox();

&Header::closebigbox();

&Header::closepage();

sub oldernewer
{
print <<END
<table width='100%'>
<tr>
END
;

print "<td align='center' width='50%'>";
if ($prev != -1) {
	print "<a href='/cgi-bin/logs.cgi/log.dat?$prev,$cgiparams{'MONTH'},$cgiparams{'DAY'},$cgiparams{'SECTION'}'>$Lang::tr{'older'}</a>"; }
else {
	print "$Lang::tr{'older'}"; }
print "</td>\n";

print "<td align='center' width='50%'>";
if ($next >= 0) {
	print "<a href='/cgi-bin/logs.cgi/log.dat?$next,$cgiparams{'MONTH'},$cgiparams{'DAY'},$cgiparams{'SECTION'}'>$Lang::tr{'newer'}</a>"; }
else {
	print "$Lang::tr{'newer'}"; }
print "</td>\n";

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