# SmoothWall CGIs
#
# This code is distributed under the terms of the GPL
#
# (c) The SmoothWall Team
# Copyright (C) 2002 Alex Hudson - getcgihash() rewrite
# Copyright (C) 2002 Bob Grant <bob@cache.ucr.edu> - validmac()
# Copyright (c) 2002/04/13 Steve Bootes - add alias section, helper functions
# Copyright (c) 2002/08/23 Mark Wormgoor <mark@wormgoor.com> validfqdn()
# Copyright (c) 2003/09/11 Darren Critchley <darrenc@telus.net> srtarray()
#
package Header;

use CGI();
use Socket;
use Time::Local;

$|=1; # line buffering

$Header::revision = 'final';
$Header::swroot = '/var/ipfire';
$Header::graphdir='/srv/web/ipfire/html/graphs';
$Header::pagecolour = '#ffffff';
#$Header::tablecolour = '#a0a0a0';
$Header::tablecolour = '#FFFFFF';
$Header::bigboxcolour = '#F6F4F4';
$Header::boxcolour = '#EAE9EE';
$Header::bordercolour = '#000000';
$Header::table1colour = '#E0E0E0';
$Header::table2colour = '#F0F0F0';
$Header::colourred = '#993333';
$Header::colourorange = '#FF9933';
$Header::colouryellow = '#FFFF00';
$Header::colourgreen = '#339933';
$Header::colourblue = '#333399';
$Header::colourovpn = '#339999';
$Header::colourfw = '#000000';
$Header::colourvpn = '#990099';
$Header::colourerr = '#FF0000';
$Header::viewsize = 150;
$Header::errormessage = '';
my %menuhash = ();
my $menu = \%menuhash;
%settings = ();
%ethsettings = ();
@URI = ();

### Make sure this is an SSL request
if ($ENV{'SERVER_ADDR'} && $ENV{'HTTPS'} ne 'on') {
    print "Status: 302 Moved\r\n";
    print "Location: https://$ENV{'SERVER_ADDR'}:444/$ENV{'PATH_INFO'}\r\n\r\n";
    exit 0;
}

### Initialize environment
&General::readhash("${swroot}/main/settings", \%settings);
&General::readhash("${swroot}/ethernet/settings", \%ethsettings);
$language = $settings{'LANGUAGE'};
$hostname = $settings{'HOSTNAME'};
$hostnameintitle = 0;

### Initialize language
if ($language =~ /^(\w+)$/) {$language = $1;}

### Read English Files
if ( -d "/var/ipfire/langs/en/" ) {
    opendir(DIR, "/var/ipfire/langs/en/");
    @names = readdir(DIR) or die "Cannot Read Directory: $!\n";
    foreach $name(@names) {
        next if ($name eq ".");
        next if ($name eq "..");
        next if (!($name =~ /\.pl$/));
        require "${swroot}/langs/en/${name}";
    };
};


### Enable Language Files
if ( -d "/var/ipfire/langs/${language}/" ) {
    opendir(DIR, "/var/ipfire/langs/${language}/");
    @names = readdir(DIR) or die "Cannot Read Directory: $!\n";
    foreach $name(@names) {
        next if ($name eq ".");
        next if ($name eq "..");
        next if (!($name =~ /\.pl$/));
        require "${swroot}/langs/${language}/${name}";
    };
};

### Read IPFire Buildversion
$FIREBUILD = "File not found: firebuild\n";
if (open(MYFile, "<${swroot}/firebuild")) {
    $FIREBUILD = <MYFile>;
    chomp($FIREBUILD);
    $FIREBUILD = "(Build: $FIREBUILD)";
    close(MYFile);
};

require "${swroot}/langs/en.pl";
require "${swroot}/langs/${language}.pl";
eval `/bin/cat /srv/web/ipfire/html/themes/$settings{'THEME'}/include/functions.pl`;

sub orange_used () {
    if ($ethsettings{'CONFIG_TYPE'} =~ /^[24]$/) {
	return 1;
    }
    return 0;
}

sub blue_used () {
    if ($ethsettings{'CONFIG_TYPE'} =~ /^[34]$/) {
	return 1;
    }
    return 0;
}

sub is_modem {
    if ($ethsettings{'CONFIG_TYPE'} =~ /^[0]$/) {
	return 1;
    }
    return 0;
}

### Initialize menu
sub genmenu {

    my %subsystemhash = ();
    my $subsystem = \%subsystemhash;

    my %substatushash = ();
    my $substatus = \%substatushash;

    my %subnetworkhash = ();
    my $subnetwork = \%subnetworkhash;

    my %subserviceshash = ();
    my $subservices = \%subserviceshash;

    my %subfirewallhash = ();
    my $subfirewall = \%subfirewallhash;

    my %subipfirehash = ();
    my $subipfire = \%subipfirehash;

    my %sublogshash = ();
    my $sublogs = \%sublogshash;

    eval `/bin/cat /var/ipfire/menu.d/*.menu`;
    eval `/bin/cat /var/ipfire/menu.d/*.main`;

    if (! blue_used() && ! orange_used()) {
	$menu->{'05.firewall'}{'subMenu'}->{'40.dmz'}{'enabled'} = 0;
    }
    if (! blue_used()) {
	$menu->{'05.firewall'}{'subMenu'}->{'30.wireless'}{'enabled'} = 0;
    }
    if ( $ethsettings{'CONFIG_TYPE'} =~ /^(1|2|3|4)$/ && $ethsettings{'RED_TYPE'} eq 'STATIC' ) {
	$menu->{'03.network'}{'subMenu'}->{'70.aliases'}{'enabled'} = 1;
    }
}

sub showhttpheaders
{
#	print "Pragma: no-cache\n";
#	print "Cache-control: no-cache\n";
#	print "Connection: close\n";
	print "Content-type: text/html\n\n";
}

sub is_menu_visible($) {
    my $link = shift;
    $link =~ s#\?.*$##;
    return (-e $ENV{'DOCUMENT_ROOT'}."/../$link");
}


sub getlink($) {
    my $root = shift;
    if (! $root->{'enabled'}) {
	return '';
    }
    if ($root->{'uri'} !~ /^$/) {
	my $vars = '';
	if ($root->{'vars'} !~ /^$/) {
	    $vars = '?'. $root->{'vars'};
	}
	if (! is_menu_visible($root->{'uri'})) {
	    return '';
	}
	return $root->{'uri'}.$vars;
    }
    my $submenus = $root->{'subMenu'};
    if (! $submenus) {
	return '';
    }
    foreach my $item (sort keys %$submenus) {
	my $link = getlink($submenus->{$item});
	if ($link ne '') {
	    return $link;
	}
    }
    return '';
}


sub compare_url($) {
    my $conf = shift;

    my $uri = $conf->{'uri'};
    my $vars = $conf->{'vars'};
    my $novars = $conf->{'novars'};

    if ($uri eq '') {
	return 0;
    }
    if ($uri ne $URI[0]) {
	return 0;
    }
    if ($novars) {
	if ($URI[1] !~ /^$/) {
	    return 0;
	}
    }
    if (! $vars) {
	return 1;
    }
    return ($URI[1] eq $vars);
}


sub gettitle($) {
    my $root = shift;

    if (! $root) {
	return '';
    }
    foreach my $item (sort keys %$root) {
	my $val = $root->{$item};
	if (compare_url($val)) {
	    $val->{'selected'} = 1;
	    if ($val->{'title'} !~ /^$/) {
		return $val->{'title'};
	    }
	    return 'EMPTY TITLE';
	}

	my $title = gettitle($val->{'subMenu'});
	if ($title ne '') {
	    $val->{'selected'} = 1;
	    return $title;
	}
    }
    return '';
}

sub getcgihash {
	my ($hash, $params) = @_;
	my $cgi = CGI->new ();
	$hash->{'__CGI__'} = $cgi;
	return if ($ENV{'REQUEST_METHOD'} ne 'POST');
	if (!$params->{'wantfile'}) {
		$CGI::DISABLE_UPLOADS = 1;
		$CGI::POST_MAX        = 512 * 1024;
	} else {
		$CGI::POST_MAX = 10 * 1024 * 1024;
	}

	$cgi->referer() =~ m/^https?\:\/\/([^\/]+)/;
	my $referer = $1;
	$cgi->url() =~ m/^https?\:\/\/([^\/]+)/;
	my $servername = $1;
	return if ($referer ne $servername);

	### Modified for getting multi-vars, split by |
	%temp = $cgi->Vars();
        foreach my $key (keys %temp) {
		$hash->{$key} = $temp{$key};
		$hash->{$key} =~ s/\0/|/g;
		$hash->{$key} =~ s/^\s*(.*?)\s*$/$1/;
        }

	if (($params->{'wantfile'})&&($params->{'filevar'})) {
		$hash->{$params->{'filevar'}} = $cgi->upload
						($params->{'filevar'});
	}
	return;
}


# Test if IP is within a subnet
# Call: IpInSubnet (Addr, Subnet, Subnet Mask)
#       Subnet can be an IP of the subnet: 10.0.0.0 or 10.0.0.1
#       Everything in dottted notation
# Return: TRUE/FALSE
sub IpInSubnet
{
    $ip = unpack('N', inet_aton(shift));
    $start = unpack('N', inet_aton(shift));
    $mask  = unpack('N', inet_aton(shift));
    $start &= $mask;  # base of subnet...
    $end   = $start + ~$mask;
    return (($ip >= $start) && ($ip <= $end));
}

sub cleanhtml
{
	my $outstring =$_[0];
	$outstring =~ tr/,/ / if not defined $_[1] or $_[1] ne 'y';
	$outstring =~ s/&/&amp;/g;
	$outstring =~ s/\'/&#039;/g;
	$outstring =~ s/\"/&quot;/g; #" This is just a workaround for the syntax highlighter
	$outstring =~ s/</&lt;/g;
	$outstring =~ s/>/&gt;/g;
	return $outstring;
}

sub connectionstatus
{
    my %pppsettings = ();
    my %netsettings = ();
    my $iface='';

    $pppsettings{'PROFILENAME'} = 'None';
    &General::readhash("${General::swroot}/ppp/settings", \%pppsettings);
    &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);

    my $profileused='';
    unless ( $netsettings{'RED_TYPE'} =~ /^(DHCP|STATIC)$/ ) {
    	$profileused="- $pppsettings{'PROFILENAME'}";
    }

    my ($timestr, $connstate);

		my $connstate = "<span>$Lang::tr{'idle'} $profileused</span>";

		if (-e "${General::swroot}/red/active") {
			$timestr = &General::age("${General::swroot}/red/active");
			$connstate = "<span>$Lang::tr{'connected'} - (<span>$timestr</span>) $profileused</span>";
		} else {
		  if ((open(KEEPCONNECTED, "</var/ipfire/red/keepconnected") == false) && ($pppsettings{'RECONNECTION'} eq "persistent")) {
				$connstate = "<span>$Lang::tr{'connection closed'} $profileused</span>";
      } elsif (($pppsettings{'RECONNECTION'} eq "dialondemand") && ( -e "${General::swroot}/red/dial-on-demand")) {
				$connstate = "<span>$Lang::tr{'dod waiting'} $profileused</span>";
			} else {
				$connstate = "<span>$Lang::tr{'connecting'} $profileused</span>" if (system("ps -ef | grep -q '[p]ppd'"));
			}
		}
		
    return $connstate;
}

sub CheckSortOrder {
#Sorting of allocated leases
    if ($ENV{'QUERY_STRING'} =~ /^IPADDR|^ETHER|^HOSTNAME|^ENDTIME/ ) {
        my $newsort=$ENV{'QUERY_STRING'};
        &readhash("${swroot}/dhcp/settings", \%dhcpsettings);
        $act=$dhcpsettings{'SORT_LEASELIST'};
        #Reverse actual ?
        if ($act =~ $newsort) {
            if ($act !~ 'Rev') {$Rev='Rev'};
            $newsort.=$Rev
        };

        $dhcpsettings{'SORT_LEASELIST'}=$newsort;
        &writehash("${swroot}/dhcp/settings", \%dhcpsettings);
        $dhcpsettings{'ACTION'} = 'SORT';  # avoid the next test "First lauch"
    }

}

sub PrintActualLeases
{
    &openbox('100%', 'left', $tr{'current dynamic leases'});
    print <<END
<table width='100%'>
<tr>
<td width='25%' align='center'><a href='$ENV{'SCRIPT_NAME'}?IPADDR'><b>$tr{'ip address'}</b></a></td>
<td width='25%' align='center'><a href='$ENV{'SCRIPT_NAME'}?ETHER'><b>$tr{'mac address'}</b></a></td>
<td width='20%' align='center'><a href='$ENV{'SCRIPT_NAME'}?HOSTNAME'><b>$tr{'hostname'}</b></a></td>
<td width='25%' align='center'><a href='$ENV{'SCRIPT_NAME'}?ENDTIME'><b>$tr{'lease expires'} (local time d/m/y)</b></a></td>
<td width='5%' align='center'><b>Add to fix leases<b></td>
</tr>
END
    ;

    open(LEASES,"/var/state/dhcp/dhcpd.leases") or die "Can't open dhcpd.leases";
    while ($line = <LEASES>) {
	next if( $line =~ /^\s*#/ );
	chomp($line);
	@temp = split (' ', $line);

	if ($line =~ /^\s*lease/) {
	    $ip = $temp[1];
	    #All field are not necessarily read. Clear everything
	    $endtime = 0;
	    $ether = "";
	    $hostname = "";
	}

	if ($line =~ /^\s*ends/) {
	    $line =~ /(\d+)\/(\d+)\/(\d+) (\d+):(\d+):(\d+)/;
	    $endtime = timegm($6, $5, $4, $3, $2 - 1, $1 - 1900);
	}

	if ($line =~ /^\s*hardware ethernet/) {
	    $ether = $temp[2];
	    $ether =~ s/;//g;
	}

	if ($line =~ /^\s*client-hostname/) {
	    $hostname = "$temp[1] $temp[2] $temp[3]";
	    $hostname =~ s/;//g;
	    $hostname =~ s/\"//g;
	}

	if ($line eq "}") {
	    @record = ('IPADDR',$ip,'ENDTIME',$endtime,'ETHER',$ether,'HOSTNAME',$hostname);
    	    $record = {};                        		# create a reference to empty hash
	    %{$record} = @record;                		# populate that hash with @record
	    $entries{$record->{'IPADDR'}} = $record;   	# add this to a hash of hashes
	}
    }
    close(LEASES);

    my $id = 0;
    foreach my $key (sort leasesort keys %entries) {
	print "<form method='post' action='/cgi-bin/dhcp.cgi'>\n";
	my $hostname = &cleanhtml($entries{$key}->{HOSTNAME},"y");

	if ($id % 2) {
	    print "<tr bgcolor='$table1colour'>"; 
	}
	else {
	    print "<tr bgcolor='$table2colour'>"; 
	}

	print <<END
<td align='center'><input type='hidden' name='FIX_ADDR' value='$entries{$key}->{IPADDR}' />$entries{$key}->{IPADDR}</td>
<td align='center'><input type='hidden' name='FIX_MAC' value='$entries{$key}->{ETHER}' />$entries{$key}->{ETHER}</td>
<td align='center'><input type='hidden' name='FIX_REMARK' value='$hostname' />&nbsp;$hostname</td>
<td align='center'><input type='hidden' name='FIX_ENABLED' value='on' />
END
	;

	($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $dst) = localtime ($entries{$key}->{ENDTIME});
	$enddate = sprintf ("%02d/%02d/%d %02d:%02d:%02d",$mday,$mon+1,$year+1900,$hour,$min,$sec);

	if ($entries{$key}->{ENDTIME} < time() ){
	    print "<strike>$enddate</strike>";
	} else {
	    print "$enddate";
	}
	print <<END
<td><input type='hidden' name='ACTION' value='$Lang::tr{'add'}2' /><input type='submit' name='SUBMIT' value='$Lang::tr{'add'}' />
</td></td></tr></form>
END
	;
	$id++;
    }

    print "</table>";
    &closebox();
}


# This sub is used during display of actives leases
sub leasesort {
    if (rindex ($dhcpsettings{'SORT_LEASELIST'},'Rev') != -1)
    {
        $qs=substr ($dhcpsettings{'SORT_LEASELIST'},0,length($dhcpsettings{'SORT_LEASELIST'})-3);
        if ($qs eq 'IPADDR') {
            @a = split(/\./,$entries{$a}->{$qs});
            @b = split(/\./,$entries{$b}->{$qs});
            ($b[0]<=>$a[0]) ||
            ($b[1]<=>$a[1]) ||
            ($b[2]<=>$a[2]) ||
            ($b[3]<=>$a[3]);
        }else {
            $entries{$b}->{$qs} cmp $entries{$a}->{$qs};
        }
    }
    else #not reverse
    {
        $qs=$dhcpsettings{'SORT_LEASELIST'};
        if ($qs eq 'IPADDR') {
	    @a = split(/\./,$entries{$a}->{$qs});
    	    @b = split(/\./,$entries{$b}->{$qs});
    	    ($a[0]<=>$b[0]) ||
	    ($a[1]<=>$b[1]) ||
	    ($a[2]<=>$b[2]) ||
    	    ($a[3]<=>$b[3]);
	}else {
    	    $entries{$a}->{$qs} cmp $entries{$b}->{$qs};
	}
    }
}
