###############################################################################
# #
# IPFire.org - A linux based firewall #
-# Copyright (C) 2007-2015 IPFire Team <info@ipfire.org> #
+# Copyright (C) 2007-2018 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 #
# 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";
+require "${General::swroot}/ids-functions.pl";
my %color = ();
my %mainsettings = ();
my %netsettings = ();
+my %idsrules = ();
my %snortsettings=();
+my %rulesetsources = ();
my %cgiparams=();
my %checked=();
my %selected=();
# Get netsettings.
&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
+my $snortrulepath = "/etc/snort/rules";
+my $snortusedrulefilesfile = "${General::swroot}/snort/snort-used-rulefiles.conf";
+my $errormessage;
+
&Header::showhttpheaders();
# Default settings for snort.
$snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
$snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
$snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
-$snortsettings{'ACTION'} = '';
$snortsettings{'RULES'} = '';
$snortsettings{'OINKCODE'} = '';
-$snortsettings{'INSTALLDATE'} = '';
#Get GUI values
&Header::getcgihash(\%cgiparams);
-my $snortrulepath = "/etc/snort/rules";
-my $snortusedrulefilesfile = "${General::swroot}/snort/snort-used-rulefiles.conf";
-my $restartsnortrequired = 0;
-my %snortrules;
-my $errormessage;
-my $url;
+# Check if any error has been stored.
+if (-e $IDS::storederrorfile) {
+ # Open file to read in the stored error message.
+ open(FILE, "<$IDS::storederrorfile") or die "Could not open $IDS::storederrorfile. $!\n";
-## Grab all available snort rules and store them in the snortrules hash.
+ # Read the stored error message.
+ $errormessage = <FILE>;
+
+ # Close file.
+ close (FILE);
+
+ # Delete the file, which is now not longer required.
+ unlink($IDS::storederrorfile);
+}
+
+
+## Grab all available snort rules and store them in the idsrules hash.
#
# Open snort rules directory and do a directory listing.
opendir(DIR, $snortrulepath) or die $!;
next unless (-R "$snortrulepath/$file");
# Call subfunction to read-in rulefile and add rules to
- # the snortrules hash.
+ # the idsrules hash.
&readrulesfile("$file");
}
if ($line =~ /.*include \$RULE_PATH\/(.*)/) {
my $rulefile = $1;
- # Add the rulefile to the %snortrules hash.
- $snortrules{$rulefile}{'Rulefile'}{'State'} = "on";
+ # Add the rulefile to the %idsrules hash.
+ $idsrules{$rulefile}{'Rulefile'}{'State'} = "on";
}
}
}
my @disabled_sids;
my @enabled_rulefiles;
- # Loop through the hash of snortrules.
- foreach my $rulefile(keys %snortrules) {
+ # Loop through the hash of idsrules.
+ foreach my $rulefile(keys %idsrules) {
# Check if the rulefile is enabled.
if ($cgiparams{$rulefile} eq "on") {
# Add rulefile to the array of enabled rulefiles.
}
}
- # Loop through the hash of snortrules.
- foreach my $rulefile (keys %snortrules) {
+ # Loop through the hash of idsrules.
+ foreach my $rulefile (keys %idsrules) {
# Loop through the single rules of the rulefile.
- foreach my $sid (keys %{$snortrules{$rulefile}}) {
+ foreach my $sid (keys %{$idsrules{$rulefile}}) {
# Skip the current sid if it is not numeric.
next unless ($sid =~ /\d+/ );
# Check if there exists a key in the cgiparams hash for this sid.
if (exists($cgiparams{$sid})) {
# Look if the rule is disabled.
- if ($snortrules{$rulefile}{$sid}{'State'} eq "off") {
+ if ($idsrules{$rulefile}{$sid}{'State'} eq "off") {
# Check if the state has been set to 'on'.
if ($cgiparams{$sid} eq "on") {
# Add the sid to the enabled_sids array.
}
} else {
# Look if the rule is enabled.
- if ($snortrules{$rulefile}{$sid}{'State'} eq "on") {
+ if ($idsrules{$rulefile}{$sid}{'State'} eq "on") {
# Check if the state is 'on' and should be disabled.
# In this case there is no entry
# for the sid in the cgiparams hash.
# Close file after writing.
close(FILE);
+ # Lock the webpage and print message.
+ &working_notice("$Lang::tr{'snort working'}");
+
# Call oinkmaster to alter the ruleset.
- &oinkmaster();
+ &IDS::oinkmaster();
+
+ # Reload page.
+ &reload();
# Download new ruleset.
} elsif ($cgiparams{'RULESET'} eq $Lang::tr{'download new ruleset'}) {
- # Local var.
- my $return;
-
- # Call diskfree to gather the free disk space of /var.
- my @df = `/bin/df -B M /var`;
-
- # Loop through the output.
- foreach my $line (@df) {
- # Ignore header line.
- next if $line =~ m/^Filesystem/;
-
- # Search for a line with the device information.
- if ($line =~ m/dev/ ) {
- # Split the line into single pieces.
- my @values = split(' ', $line);
- my ($filesystem, $blocks, $used, $available, $used_perenctage, $mounted_on) = @values;
-
- # Check if the available disk space is more than 300MB.
- if ($available < 300) {
- # If there is not enough space, print out an error message.
- $errormessage = "$Lang::tr{'not enough disk space'} < 300MB, /var $1MB";
- } else {
- # Call subfunction to download the ruleset.
- &downloadrulesfile();
-
- # Sleep for 3 seconds.
- sleep(3);
-
- # Gather return of the external wget.
- $return = `cat /var/tmp/log 2>/dev/null`;
- }
-
- # Check if there was an error.
- if ($return =~ "ERROR") {
- # Store error message for display.
- $errormessage = "<br /><pre>".$return."</pre>";
- } else {
- # Call subfunction to launch oinkmaster.
- &oinkmaster();
-
- # Sleep for 2 seconds.
- sleep(2);
- }
- }
+ # Check if the red device is active.
+ unless (-e "${General::swroot}/red/active") {
+ $errormessage = $Lang::tr{'could not download latest updates'};
}
-}
+ # Check if enought free disk space is availabe.
+ $errormessage = &IDS::checkdiskspace();
-if ($snortsettings{'OINKCODE'} ne "") {
- $errormessage = $Lang::tr{'invalid input for oink code'} unless ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/);
-}
+ # Check if any errors happend.
+ unless ($errormessage) {
+ # Lock the webpage and print notice about downloading
+ # a new ruleset.
+ &working_notice("$Lang::tr{'snort working'}");
-if (!$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";
- }
+ # Call subfunction to download the ruleset.
+ $errormessage = &IDS::downloadruleset();
- if ($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', "${General::swroot}/snort/enable_orange");
+ # Check if the downloader returned an error.
+ if ($errormessage) {
+ # Call function to store the errormessage.
+ &IDS::log_error($errormessage);
+
+ # Preform a reload of the page.
+ &reload();
} else {
- unlink "${General::swroot}/snort/enable_orange";
+ # Call subfunction to launch oinkmaster.
+ &IDS::oinkmaster();
+
+ # Perform a reload of the page.
+ &reload();
}
- if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
- {
- system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
- } else {
- unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
+ }
+# Save snort settings.
+} elsif ($cgiparams{'SNORT'} eq $Lang::tr{'save'}) {
+ # Prevent form name from been stored in conf file.
+ delete $cgiparams{'SNORT'};
+
+ # Check if an oinkcode has been provided.
+ if ($cgiparams{'OINKCODE'}) {
+ # Check if the oinkcode contains unallowed chars.
+ unless ($cgiparams{'OINKCODE'} =~ /^[a-z0-9]+$/) {
+ $errormessage = $Lang::tr{'invalid input for oink code'};
}
+ }
+
+ # Go on if there are no error messages.
+ if (!$errormessage) {
+ # Store settings into settings file.
+ &General::writehash("${General::swroot}/snort/settings", \%cgiparams);
+ # Call snortctrl to restart snort
system('/usr/local/bin/snortctrl restart >/dev/null');
}
}
&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 " Count: $debugCount\n";
-# &Header::closebox();
-# DEBUG DEBUG
-###############
-
if ($errormessage) {
&Header::openbox('100%', 'left', $Lang::tr{'error messages'});
print "<class name='base'>$errormessage\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'}' />
- <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'});
+
+my $rulesdate;
+
+# Check if a ruleset allready has been downloaded.
+if ( -f "$IDS::rulestarball"){
+ # Call stat on the filename to obtain detailed information.
+ my @Info = stat("$IDS::rulestarball");
+
+ # Grab details about the creation time.
+ $rulesdate = localtime($Info[9]);
}
-&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' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
+<form method='post' action='$ENV{'SCRIPT_NAME'}'>
+ <table width='100%' border='0'>
+ <tr>
+ <td class='base' width='25%'>
+ <input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'}>RED Snort
+ </td>
+
+ <td class='base' width='25%'>
+ <input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'}>GREEN Snort
+ </td>
+
+ <td class='base' width='25%'>
END
;
-if ($netsettings{'BLUE_DEV'} ne '') {
- print " <input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} /> BLUE Snort";
+
+# Check if a blue device is configured.
+if ($netsettings{'BLUE_DEV'}) {
+ print "<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />BLUE Snort\n";
}
-if ($netsettings{'ORANGE_DEV'} ne '') {
- print " <input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} /> ORANGE Snort";
+
+print "</td>\n";
+
+print "<td width='25%'>\n";
+
+# Check if an orange device is configured.
+if ($netsettings{'ORANGE_DEV'}) {
+ print "<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />ORANGE Snort\n";
}
- print " <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'>
+ </td>
+ </tr>
+
+ <tr>
+ <td colspan='4'><br><br></td>
+ </tr>
+
+ <tr>
+ <td colspan='4'><b>$Lang::tr{'ids rules update'}</b></td>
+ </tr>
+
+ <tr>
+ <td colspan='4'><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>, $Lang::tr{'ids rules license3'}
- </td>
-</tr>
-<tr>
- <td nowrap='nowrap'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$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 " $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>
+ </td>
+ </tr>
+
+ <tr>
+ <td colspan='4'>
+ <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>, $Lang::tr{'ids rules license3'}</br>
+ </td>
+ </tr>
+
+ <tr>
+ <td colspan='4' nowrap='nowrap'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}'></td>
+ </tr>
+
+ <tr>
+ <td colspan='4' align='left'><br>
+ <input type='submit' name='RULESET' value='$Lang::tr{'download new ruleset'}'> $Lang::tr{'updates installed'}: $rulesdate
+ </td>
+
+ </tr>
+ </table>
+
+ <br><br>
+
+ <table width='100%'>
+ <tr>
+ <td align='right'><input type='submit' name='SNORT' value='$Lang::tr{'save'}' /></td>
+ </tr>
+ </table>
</form>
END
;
my $rulesetcount = 1;
# Loop over each rule file
- foreach my $rulefile (sort keys(%snortrules)) {
+ foreach my $rulefile (sort keys(%idsrules)) {
my $rulechecked = '';
# Check if rule file is enabled
- if ($snortrules{$rulefile}{'Rulefile'}{'State'} eq 'on') {
+ if ($idsrules{$rulefile}{'Rulefile'}{'State'} eq 'on') {
$rulechecked = 'CHECKED';
}
print "<table width='100%'>\n";
# Loop over rule file rules
- foreach my $sid (sort {$a <=> $b} keys(%{$snortrules{$rulefile}})) {
+ foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) {
# Local vars
my $ruledefchecked = '';
}
# Set rule state
- if ($snortrules{$rulefile}{$sid}{'State'} eq 'on') {
+ if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') {
$ruledefchecked = 'CHECKED';
}
print "<td class='base' width='5%' align='right' $col>\n";
print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n";
print "</td>\n";
- print "<td class='base' width='45%' $col>$snortrules{$rulefile}{$sid}{'Description'}</td>";
+ print "<td class='base' width='45%' $col>$idsrules{$rulefile}{$sid}{'Description'}</td>";
# Increment rule count
$lines++;
END
;
&Header::closebox();
-
&Header::closebigbox();
&Header::closepage();
-sub refreshpage {
- &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='1;'>" );
- print "<center><img src='/images/clock.gif' alt='' /><br/><font color='red'>$Lang::tr{'pagerefresh'}</font></center>";
+#
+## A function to display a notice, to lock the webpage and
+## tell the user which action currently will be performed.
+#
+sub working_notice ($) {
+ my ($message) = @_;
+
+ &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
+ &Header::openbigbox('100%', 'left', '', $errormessage);
+ &Header::openbox( 'Waiting', 1,);
+ print <<END;
+ <table>
+ <tr>
+ <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td>
+ <td>$message</td>
+ </tr>
+ </table>
+END
&Header::closebox();
+ &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 $url");
- }
-}
+#
+## A tiny function to perform a reload of the webpage after one second.
+#
+sub reload () {
+ print "<meta http-equiv='refresh' content='1'>\n";
-sub oinkmaster () {
- # Call oinkmaster to generate ruleset.
- system("/usr/local/bin/oinkmaster.pl -v -s -u file:///var/tmp/snortrules.tar.gz -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules >>/var/tmp/log 2>&1 &");
+ # Stop the script.
+ exit;
}
+#
+## Private function to read-in and parse rules of a given rulefile.
+#
+## The given file will be read, parsed and all valid rules will be stored by ID,
+## message/description and it's state in the idsrules hash.
+#
sub readrulesfile ($) {
my $rulefile = shift;
# Check if a rule has been found.
if ($sid && $msg) {
- # Add rule to the snortrules hash.
- $snortrules{$rulefile}{$sid}{'Description'} = $msg;
+ # Add rule to the idsrules hash.
+ $idsrules{$rulefile}{$sid}{'Description'} = $msg;
# Grab status of the rule. Check if ruleline starts with a "dash".
if ($line =~ /^\#/) {
# If yes, the rule is disabled.
- $snortrules{$rulefile}{$sid}{'State'} = "off";
+ $idsrules{$rulefile}{$sid}{'State'} = "off";
} else {
# Otherwise the rule is enabled.
- $snortrules{$rulefile}{$sid}{'State'} = "on";
+ $idsrules{$rulefile}{$sid}{'State'} = "on";
}
}
}