--- /dev/null
+#!/usr/bin/perl
+###############################################################################
+# #
+# IPFire.org - A linux based firewall #
+# Copyright (C) 2014 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;
+use Locale::Country;
+
+# 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";
+
+#workaround to suppress a warning when a variable is used only once
+my @dummy = ( ${Header::colouryellow} );
+undef (@dummy);
+
+my $string=();
+my $memory=();
+my @memory=();
+my @pid=();
+my @guardian=();
+my %cgiparams=();
+
+# Path to the guardian.ignore file.
+my $ignorefile ='/var/ipfire/guardian/guardian.ignore';
+
+# Path to the guardian.target file.
+my $targetfile ='/var/ipfire/guardian/guardian.ignore';
+
+our %netsettings = ();
+&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
+
+our %color = ();
+our %mainsettings = ();
+&General::readhash("${General::swroot}/main/settings", \%mainsettings);
+&General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
+
+our %settings = ();
+
+$settings{'GUARDIAN_ENABLED'} = 'off';
+$settings{'GUARDIAN_BLOCKINTERFACES'} ='default';
+$settings{'GUARDIAN_BLOCKTIME'} = '86400';
+$settings{'GUARDIAN_LOGFILE'} = '/var/log/guardian/guardian.log';
+$settings{'GUARDIAN_SNORT_ALERTFILE'} = '/var/log/snort/alert';
+
+$settings{'ACTION'} = '';
+
+my $errormessage = '';
+
+&Header::showhttpheaders();
+
+# Get GUI values.
+&Header::getcgihash(\%settings);
+&Header::getcgihash(\%cgiparams);
+
+## Perform input checks and save settings.
+#
+if ($settings{'ACTION'} eq $Lang::tr{'save'}) {
+
+ # Check for valid blocktime.
+ if ($settings{'GUARDIAN_BLOCKTIME'} ne '') {
+ if (($settings{'GUARDIAN_BLOCKTIME'} !~ /^[0-9]+$/) || ($settings{'GUARDIAN_BLOCKTIME'} le '0')) {
+ $errormessage = "$Lang::tr{'guardian invalid blocktime'}";
+ }
+ }
+
+ # Check Logfile.
+ if ($settings{'GUARDIAN_LOGFILE'} ne '') {
+ if ($settings{'GUARDIAN_LOGFILE'} !~ /^[a-zA-Z0-9\.\/]+$/) {
+ $errormessage = "$Lang::tr{'guardian invalid logfile'}";
+ }
+ }
+
+ # Check input for snort alert file.
+ if ($settings{'GUARDIAN_SNORT_ALERTFILE'} ne '') {
+ if ($settings{'GUARDIAN_SNORT_ALERTFILE'} !~ /^[a-zA-Z0-9\.\/]+$/) {
+ $errormessage = "$Lang::tr{'guardian invalid alertfile'}";
+ }
+ }
+
+ # Only continue if no error message has been set.
+ if ($errormessage eq '') {
+ # Write configuration settings to file.
+ &General::writehash("${General::swroot}/guardian/settings", \%settings);
+
+ # Update configuration files.
+ &BuildConfiguration();
+ }
+
+## Add a new entry to the ignore file.
+#
+} elsif ($settings{'ACTION'} eq $Lang::tr{'add'}) {
+
+ # Check if any input has been performed.
+ if ($settings{'NEW_IGNORE_ENTRY'} ne '') {
+
+ # Check if the given input is no valid IP-address or IP-address with subnet, display an error message.
+ if ((!&General::validip($settings{'NEW_IGNORE_ENTRY'})) && (!&General::validipandmask($settings{'NEW_IGNORE_ENTRY'}))) {
+ $errormessage = "$Lang::tr{'guardian invalid address or subnet'}";
+ }
+ } else {
+ $errormessage = "$Lang::tr{'guardian empty input'}";
+ }
+
+ # Go further if there was no error.
+ if ($errormessage eq '') {
+ my $new_entry = $settings{'NEW_IGNORE_ENTRY'};
+
+ # Open file for appending the new entry.
+ open (FILE, ">>$ignorefile") or die "Unable to open $ignorefile for writing";
+
+ # Write the new entry to the ignore file.
+ print FILE "$new_entry\n";
+ close(FILE);
+ }
+
+## Remove entry from ignore list.
+#
+} elsif ($settings{'ACTION'} eq $Lang::tr{'remove'}) {
+ my $id = 0;
+
+ # Open ignorefile and read content.
+ open(FILE, "<$ignorefile") or die "Unable to open $ignorefile.";
+ my @current = <FILE>;
+ close(FILE);
+
+ # Re-open ignorefile for writing.
+ open(FILE, ">$ignorefile") or die "Unable to open $ignorefile for writing";
+ flock FILE, 2;
+
+ # Read line by line from ignorefile and write them back except the line with the given ID.
+ # So this line is missing in the new file and the entry has been deleted.
+ foreach my $line (@current) {
+ $id++;
+ unless ($cgiparams{'ID'} eq $id) {
+ print FILE "$line";
+ }
+ }
+ close(FILE);
+
+## Block a user given address or subnet.
+#
+} elsif ($settings{'ACTION'} eq $Lang::tr{'block'}) {
+
+ # Check if no empty input has been performed.
+ if ($settings{'ADDRESS_BLOCK'} ne '') {
+
+ # Check if the given input is no valid IP-address or IP-address with subnet, display an error message.
+ if ((!&General::validip($settings{'ADDRESS_BLOCK'})) && (!&General::validipandmask($settings{'ADDRESS_BLOCK'}))) {
+ $errormessage = "$Lang::tr{'guardian invalid address or subnet'}";
+ }
+
+ } else {
+ $errormessage = "$Lang::tr{'guardian empty input'}";
+ }
+
+ # Go further if there was no error.
+ if ($errormessage eq '') {
+ my $block = $settings{'ADDRESS_BLOCK'};
+
+ # Call helper to unblock address.
+ system("/usr/local/bin/guardianctrl block $block &>/dev/null");
+ }
+
+## Unblock address or subnet.
+#
+} elsif ($settings{'ACTION'} eq $Lang::tr{'unblock'}) {
+
+ # Check if no empty input has been performed.
+ if ($settings{'ADDRESS_UNBLOCK'} ne '') {
+
+ # Check if the given input is no valid IP-address or IP-address with subnet, display an error message.
+ if ((!&General::validip($settings{'ADDRESS_UNBLOCK'})) && (!&General::validipandmask($settings{'ADDRESS_UNBLOCK'}))) {
+ $errormessage = "$Lang::tr{'guardian invalid address or subnet'}";
+ }
+
+ } else {
+ $errormessage = "$Lang::tr{'guardian empty input'}";
+ }
+
+ # Go further if there was no error.
+ if ($errormessage eq '') {
+ my $unblock = $settings{'ADDRESS_UNBLOCK'};
+
+ # Call helper to unblock address.
+ system("/usr/local/bin/guardianctrl unblock $unblock &>/dev/null");
+ }
+
+## Unblock all.
+#
+} elsif ($settings{'ACTION'} eq $Lang::tr{'unblock all'}) {
+
+ # Call helper to flush iptables chain from guardian.
+ system("/usr/local/bin/guardianctrl flush-chain &>/dev/null");
+
+} else {
+ # Load settings from file.
+ &General::readhash("${General::swroot}/guardian/settings", \%settings);
+}
+
+
+# Call functions to generate whole page.
+&showMainBox();
+&showIgnoreBox();
+
+# Display area only if guardian is running.
+if ( ($memory != 0) && (@pid[0] ne "///") ) {
+ &showBlockedBox();
+}
+
+# Function to display the status of guardian and allow base configuration.
+sub showMainBox() {
+ my %checked = ();
+
+ $checked{'GUARDIAN_ENABLED'}{'on'} = '';
+ $checked{'GUARDIAN_ENABLED'}{'off'} = '';
+ $checked{'GUARDIAN_ENABLED'}{$settings{'GUARDIAN_ENABLED'}} = 'checked';
+
+ $checked{'GUARDIAN_BLOCKINTERFACES'}{'default'} = '';
+ $checked{'GUARDIAN_BLOCKINTERFACES'}{'all'} = '';
+ $checked{'GUARDIAN_BLOCKINTERFACES'}{$settings{'GUARDIAN_BLOCKINTERFACES'}} = "checked='checked'";
+
+
+ &Header::openpage($Lang::tr{'guardian configuration'}, 1, '');
+ &Header::openbigbox('100%', 'left', '', $errormessage);
+
+ # Print errormessage if there is one.
+ if ($errormessage) {
+ &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
+ print "<font class='base'>$errormessage </font>\n";
+ &Header::closebox();
+ }
+
+
+ # Draw current guardian state.
+ &Header::openbox('100%', 'center', $Lang::tr{'guardian'});
+
+ # Check if guardian is running and grab some stats.
+ &daemonstats();
+
+ # Display some useful information related to guardian, if daemon is running.
+ if ( ($memory != 0) && (@pid[0] ne "///") ){
+ print <<END;
+ <table width='95%' cellspacing='0' class='tbl'>
+ <tr>
+ <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'guardian service'}</strong></th>
+ </tr>
+ <tr>
+ <td class='base'>$Lang::tr{'guardian daemon'}</td>
+ <td align='center' colspan='2' width='75%' bgcolor='${Header::colourgreen}'><font color='white'><strong>$Lang::tr{'running'}</strong></font></td>
+ </tr>
+ <tr>
+ <td class='base'></td>
+ <td bgcolor='$color{'color20'}' align='center'><strong>PID</strong></td>
+ <td bgcolor='$color{'color20'}' align='center'><strong>$Lang::tr{'memory'}</strong></td>
+ </tr>
+ <tr>
+ <td class='base'></td>
+ <td bgcolor='$color{'color22'}' align='center'>@pid[0]</td>
+ <td bgcolor='$color{'color22'}' align='center'>$memory KB</td>
+ </tr>
+ </table>
+END
+ } else {
+ # Otherwise display a hint that the service is not launched.
+ print <<END;
+ <table width='95%' cellspacing='0' class='tbl'>
+ <tr>
+ <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'guardian service'}</strong></th>
+ </tr>
+ <tr>
+ <td class='base'>$Lang::tr{'guardian daemon'}</td>
+ <td align='center' width='75%' bgcolor='${Header::colourred}'><font color='white'><strong>$Lang::tr{'stopped'}</strong></font></td>
+ </tr>
+ </table>
+END
+ }
+
+ &Header::closebox();
+
+ # Draw elements for guardian configuration.
+ &Header::openbox('100%', 'center', $Lang::tr{'guardian configuration'});
+
+ print <<END;
+ <form method='post' action='$ENV{'SCRIPT_NAME'}'>
+
+ <table width='95%'>
+ <tr>
+ <td colspan='5' class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'guardian common settings'}</b></td>
+ </tr>
+ <tr>
+ <td width='20%' class='base'>$Lang::tr{'guardian enabled'}:</td>
+ <td width='30%'><input type='checkbox' name='GUARDIAN_ENABLED' $checked{'GUARDIAN_ENABLED'}{'on'} /></td>
+ <td width='20%' class='base'>$Lang::tr{'guardian blockinterfaces'}:</td>
+ <td width='15%'> $Lang::tr{'guardian blockinterfaces default'}
+ <input type='radio' name='GUARDIAN_BLOCKINTERFACES' value='default' $checked{'GUARDIAN_BLOCKINTERFACES'}{'default'} /></td>
+ <td width='15%'> $Lang::tr{'guardian blockinterfaces all'}
+ <input type='radio' name='GUARDIAN_BLOCKINTERFACES' value='all' $checked{'GUARDIAN_BLOCKINTERFACES'}{'all'} /></td>
+
+ </tr>
+ <tr>
+ <td width='20%' class='base'>$Lang::tr{'guardian blocktime'}:</td>
+ <td colspan='5'><input type='text' name='GUARDIAN_BLOCKTIME' value='$settings{'GUARDIAN_BLOCKTIME'}' size='10' /></td>
+ </tr>
+ <tr>
+ <td width='20%' class='base'>$Lang::tr{'guardian logfile'}:</td>
+ <td colspan='5'><input type='text' name='GUARDIAN_LOGFILE' value='$settings{'GUARDIAN_LOGFILE'}' size='30' /></td>
+ </tr>
+ <tr>
+ <td width='20%' class='base'>$Lang::tr{'guardian snort alertfile'}:</td>
+ <td colspan='5'><input type='text' name='GUARDIAN_SNORT_ALERTFILE' value='$settings{'GUARDIAN_SNORT_ALERTFILE'}' size='30' /></td>
+ </tr>
+ </table>
+END
+
+ print <<END;
+ <hr>
+
+ <table width='95%'>
+ <tr>
+ <td> </td>
+ <td align='center'><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
+ <td> </td>
+ </tr>
+ </table>
+ </form>
+END
+
+ &Header::closebox();
+}
+
+# Function to show elements of the guardian ignorefile and allow to add or remove single members of it.
+sub showIgnoreBox() {
+ &Header::openbox('100%', 'center', $Lang::tr{'guardian ignored hosts'});
+
+ print <<END;
+ <table width='60%'>
+ <tr>
+ <td colspan='2' class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'guardian ignored hosts'}</b></td>
+ </tr>
+END
+ # Check if the guardian ignore file contains any content.
+ if (-s $ignorefile) {
+
+ # Open file and print contents.
+ open FILE, $ignorefile or die "Could not open $ignorefile";
+
+ my $id = 0;
+ my $col = "";
+
+ # Read file line by line and print out the elements.
+ while( my $ignored_element = <FILE> ) {
+
+ # Increase id number for each element in the ignore file.
+ $id++;
+
+ # Check if the id number is even or not.
+ if ($id % 2) {
+ $col="bgcolor='$color{'color22'}'";
+ } else {
+ $col="bgcolor='$color{'color20'}'";
+ }
+
+ print <<END;
+ <tr>
+ <td width='80%' class='base' $col>$ignored_element</td>
+ <td width='20%' align='center' $col>
+ <form method='post' name='frma$id' action='$ENV{'SCRIPT_NAME'}'>
+ <input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' title='$Lang::tr{'remove'}' alt='$Lang::tr{'remove'}'>
+ <input type='hidden' name='ID' value='$id'>
+ <input type='hidden' name='ACTION' value='$Lang::tr{'remove'}'>
+ </form>
+ </td>
+ </tr>
+END
+ }
+ close (FILE);
+ } else {
+ # Print notice that currently no elements are stored in the ignore file.
+ print "<tr>\n";
+ print "<td class='base' colspan='2'>$Lang::tr{'guardian no entries'}</td>\n";
+ print "</tr>\n";
+ }
+
+ print "</table>\n";
+
+ &Header::closebox();
+
+ # Section to add new elements to the ignore list.
+ print <<END;
+ <div class='post' align='center'>
+ <table width='60%'>
+ <form method='post' action='$ENV{'SCRIPT_NAME'}'>
+ <tr>
+ <td width='30%'>$Lang::tr{'dnsforward add a new entry'}: </td>
+ <td width='50%'><input type='text' name='NEW_IGNORE_ENTRY' value='' size='24' /></td>
+ <td align='center' width='20%'><input type='submit' name='ACTION' value='$Lang::tr{'add'}' /></td>
+ </tr>
+ </form>
+ </table>
+ </div>
+END
+}
+
+# Function to list currently bocked addresses from guardian and unblock them or add custom entries to block.
+sub showBlockedBox() {
+ &Header::openbox('100%', 'center', $Lang::tr{'guardian blocked hosts'});
+
+ # Lauch helper to get chains from iptables.
+ open(FILE, "/usr/local/bin/guardianctrl get-chain |");
+
+ print <<END;
+ <table width='60%'>
+ <tr>
+ <td colspan='2' class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'guardian blocked hosts'}</b></td>
+ </tr>
+END
+
+ my $id = 0;
+ my $address = "";
+ my $col = "";
+ my $interface = "";
+
+ # Read file line by line and print out the elements.
+ foreach my $line (<FILE>) {
+ # Skip descriptive lines.
+ next if ($line =~ /^Chain/);
+ next if ($line =~ /^ pkts/);
+
+ # Generate array based on the line content (seperator is a single or multiple space's)
+ my @comps = split(/\s{1,}/, $line);
+ my ($lead, $pkts, $bytes, $target, $prot, $opt, $in, $out, $source, $destination) = @comps;
+
+ # Assign different variable names.
+ my $blocked_host = $source;
+
+ # Increase id number for each element in the ignore file.
+ $id++;
+
+ # Check if the id number is even or not.
+ if ($id % 2) {
+ $col="bgcolor='$color{'color22'}'";
+ } else {
+ $col="bgcolor='$color{'color20'}'";
+ }
+
+ print <<END;
+ <tr>
+ <td width='80%' class='base' $col>$blocked_host</td>
+ <td width='20%' align='center' $col>
+ <form method='post' name='frmb$id' action='$ENV{'SCRIPT_NAME'}'>
+ <input type='image' name='$Lang::tr{'unblock'}' src='/images/delete.gif' title='$Lang::tr{'unblock'}' alt='$Lang::tr{'unblock'}'>
+ <input type='hidden' name='ADDRESS_UNBLOCK' value='$blocked_host'>
+ <input type='hidden' name='ACTION' value='$Lang::tr{'unblock'}'>
+ </form>
+ </td>
+ </tr>
+END
+ }
+
+ close (FILE);
+
+ # If the loop only has been runs once the id still is "0", which means there are no
+ # additional entries (blocked hosts) in the iptables chain.
+ if ($id == 0) {
+
+ # Print notice that currently no hosts are blocked.
+ print "<tr>\n";
+ print "<td class='base' colspan='2'>$Lang::tr{'guardian no entries'}</td>\n";
+ print "</tr>\n";
+ }
+
+ print "</table>\n";
+
+ &Header::closebox();
+
+ # Section for a manual block of an IP-address.
+ print <<END;
+ <div class='post' align='center'>
+ <table width='60%'>
+ <form method='post' action='$ENV{'SCRIPT_NAME'}'>
+ <tr>
+ <td width='30%'>$Lang::tr{'guardian block a host'}: </td>
+ <td width='40%'><input type='text' name='ADDRESS_BLOCK' value='' size='24' /></td>
+ <td align='center' width='15%'><input type='submit' name='ACTION' value='$Lang::tr{'block'}'></td>
+ <td align='center' width='15%'><input type='submit' name='ACTION' value='$Lang::tr{'unblock all'}'></td>
+ </tr>
+ </form>
+ </table>
+ </div>
+END
+}
+
+&Header::closebigbox();
+&Header::closepage();
+
+# Function to check if guardian has been started.
+# Grab process id and consumed memory if the daemon is running.
+sub daemonstats() {
+ $memory = 0;
+ # for pid and memory
+ open(FILE, '/usr/local/bin/addonctrl guardian status | ');
+ @guardian = <FILE>;
+ close(FILE);
+ $string = join("", @guardian);
+ $string =~ s/[a-z_]//gi;
+ $string =~ s/\[[0-1]\;[0-9]+//gi;
+ $string =~ s/[\(\)\.]//gi;
+ $string =~ s/ //gi;
+ $string =~ s/\e//gi;
+ @pid = split(/\s/,$string);
+ if (open(FILE, "/proc/$pid[0]/statm")){
+ my $temp = <FILE>;
+ @memory = split(/ /,$temp);
+ close(FILE);
+ }
+ $memory+=$memory[0];
+}
+
+sub BuildConfiguration() {
+ my %settings = ();
+ &General::readhash("${General::swroot}/guardian/settings", \%settings);
+
+ my $configfile = "${General::swroot}/guardian/guardian.conf";
+
+ open(FILE, ">$configfile");
+
+ print FILE "Interface red0\n";
+ print FILE "BlockOption $settings{'GUARDIAN_BLOCKINTERFACES'}\n";
+ print FILE "HostGatewayByte 1\n";
+ print FILE "LogFile $settings{'GUARDIAN_LOGFILE'}\n";
+ print FILE "AlertFile $settings{'GUARDIAN_SNORT_ALERTFILE'}\n";
+ print FILE "IgnoreFile $ignorefile\n";
+ print FILE "TargetFile $targetfile\n";
+ print FILE "TimeLimit $settings{'GUARDIAN_BLOCKTIME'}\n";
+
+ close(FILE);
+
+ # Restart the service.
+ if ($settings{'GUARDIAN_ENABLED'} eq 'on') {
+ system("/usr/local/bin/guardianctrl restart &>/dev/null");
+ } else {
+ system("/usr/local/bin/guardianctrl stop &>/dev/null");
+ }
+}
projects / people / pmueller / ipfire-2.x.git / commitdiff
