mirror of
https://github.com/vincentmli/bpfire.git
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f7fcd1c020
Display the rule categories any time and do not hide them if no instance of snort is runing. Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
584 lines
18 KiB
Perl
584 lines
18 KiB
Perl
#!/usr/bin/perl
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###############################################################################
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# #
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# IPFire.org - A linux based firewall #
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# Copyright (C) 2007-2015 IPFire Team <info@ipfire.org> #
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# #
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# This program is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation, either version 3 of the License, or #
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# (at your option) any later version. #
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# #
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# This program is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this program. If not, see <http://www.gnu.org/licenses/>. #
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# #
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###############################################################################
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use strict;
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# enable only the following on debugging purpose
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#use warnings;
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#use CGI::Carp 'fatalsToBrowser';
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use File::Copy;
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require '/var/ipfire/general-functions.pl';
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require "${General::swroot}/lang.pl";
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require "${General::swroot}/header.pl";
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my %color = ();
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my %mainsettings = ();
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&General::readhash("${General::swroot}/main/settings", \%mainsettings);
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&General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
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my %snortsettings=();
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my %checked=();
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my %selected=();
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my %netsettings=();
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our $errormessage = '';
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our $results = '';
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our $tempdir = '';
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our $url='';
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&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
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&Header::showhttpheaders();
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$snortsettings{'ENABLE_SNORT'} = 'off';
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$snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
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$snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
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$snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
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$snortsettings{'ACTION'} = '';
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$snortsettings{'RULES'} = '';
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$snortsettings{'OINKCODE'} = '';
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$snortsettings{'INSTALLDATE'} = '';
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$snortsettings{'FILE'} = '';
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&Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
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my $snortrulepath = "/etc/snort/rules";
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my $restartsnortrequired = 0;
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my %snortrules;
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my $rule = '';
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my $table1colour = '';
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my $table2colour = '';
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my $var = '';
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my $value = '';
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my $tmp = '';
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my $linkedrulefile = '';
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my $border = '';
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my $checkboxname = '';
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## Grab all available snort rules and store them in the snortrules hash.
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#
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# Open snort rules directory and do a directory listing.
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opendir(DIR, $snortrulepath) or die $!;
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# Loop through the direcory.
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while (my $file = readdir(DIR)) {
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# We only want files.
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next unless (-f "$snortrulepath/$file");
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# Ignore empty files.
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next if (-z "$snortrulepath/$file");
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# Use a regular expression to find files ending in .rules
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next unless ($file =~ m/\.rules$/);
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# Ignore files which are not read-able.
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next unless (-R "$snortrulepath/$file");
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# Call subfunction to read-in rulefile and add rules to
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# the snortrules hash.
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&readrulesfile("$file");
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}
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closedir(DIR);
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if ($snortsettings{'OINKCODE'} ne "") {
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$errormessage = $Lang::tr{'invalid input for oink code'} unless ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/);
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}
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if (!$errormessage) {
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if ($snortsettings{'RULES'} eq 'subscripted') {
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$url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
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} elsif ($snortsettings{'RULES'} eq 'registered') {
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$url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
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} elsif ($snortsettings{'RULES'} eq 'community') {
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$url=" https://www.snort.org/rules/community";
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} else {
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$url="http://rules.emergingthreats.net/open/snort-2.9.0/emerging.rules.tar.gz";
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}
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if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" ) {
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&General::writehash("${General::swroot}/snort/settings", \%snortsettings);
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if ($snortsettings{'ENABLE_SNORT'} eq 'on')
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{
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system ('/usr/bin/touch', "${General::swroot}/snort/enable");
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} else {
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unlink "${General::swroot}/snort/enable";
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}
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if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
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{
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system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
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} else {
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unlink "${General::swroot}/snort/enable_green";
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}
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if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
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{
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system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
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} else {
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unlink "${General::swroot}/snort/enable_blue";
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}
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if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
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{
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system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
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} else {
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unlink "${General::swroot}/snort/enable_orange";
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}
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if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
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{
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system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
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} else {
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unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
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}
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system('/usr/local/bin/snortctrl restart >/dev/null');
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}
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# INSTALLMD5 is not in the form, so not retrieved by getcgihash
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&General::readhash("${General::swroot}/snort/settings", \%snortsettings);
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if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
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my @df = `/bin/df -B M /var`;
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foreach my $line (@df) {
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next if $line =~ m/^Filesystem/;
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my $return;
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if ($line =~ m/dev/ ) {
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$line =~ m/^.* (\d+)M.*$/;
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my @temp = split(/ +/,$line);
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if ($1<300) {
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$errormessage = "$Lang::tr{'not enough disk space'} < 300MB, /var $1MB";
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} else {
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if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
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&downloadrulesfile();
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sleep(3);
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$return = `cat /var/tmp/log 2>/dev/null`;
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}
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if ($return =~ "ERROR") {
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$errormessage = "<br /><pre>".$return."</pre>";
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} else {
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system("/usr/local/bin/oinkmaster.pl -v -s -u file:///var/tmp/snortrules.tar.gz -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules >>/var/tmp/log 2>&1 &");
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sleep(2);
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}
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}
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}
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}
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}
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}
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$checked{'ENABLE_SNORT'}{'off'} = '';
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$checked{'ENABLE_SNORT'}{'on'} = '';
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$checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
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$checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
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$checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
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$checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
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$checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
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$checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
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$checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
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$checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
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$checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
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$checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
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$selected{'RULES'}{'nothing'} = '';
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$selected{'RULES'}{'community'} = '';
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$selected{'RULES'}{'emerging'} = '';
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$selected{'RULES'}{'registered'} = '';
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$selected{'RULES'}{'subscripted'} = '';
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$selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
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&Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
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print "<script type='text/javascript' src='/include/snortupdateutility.js'></script>";
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print <<END
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<style type="text/css">
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<!--
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.section {
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border: groove;
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}
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.row1color {
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border: ridge;
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background-color: $color{'color22'};
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}
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.row2color {
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border: ridge;
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background-color: $color{'color20'};
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}
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.rowselected {
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border: double #FF0000;
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background-color: #DCDCDC;
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}
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-->
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</style>
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END
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;
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&Header::openbigbox('100%', 'left', '', $errormessage);
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###############
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# DEBUG DEBUG
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# &Header::openbox('100%', 'left', 'DEBUG');
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# my $debugCount = 0;
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# foreach my $line (sort keys %snortsettings) {
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# print "$line = $snortsettings{$line}<br />\n";
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# $debugCount++;
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# }
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# print " Count: $debugCount\n";
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# &Header::closebox();
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# DEBUG DEBUG
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###############
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if ($errormessage) {
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&Header::openbox('100%', 'left', $Lang::tr{'error messages'});
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print "<class name='base'>$errormessage\n";
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print " </class>\n";
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&Header::closebox();
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}
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my $return = `pidof oinkmaster.pl -x`;
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chomp($return);
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if ($return) {
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&Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='10;'>" );
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print <<END;
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<table>
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<tr><td>
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<img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' />
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<td>
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$Lang::tr{'snort working'}
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<tr><td colspan='2' align='center'>
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<form method='post' action='$ENV{'SCRIPT_NAME'}'>
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<input type='image' alt='$Lang::tr{'reload'}' title='$Lang::tr{'reload'}' src='/images/view-refresh.png' />
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</form>
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<tr><td colspan='2' align='left'><pre>
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END
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my @output = `tail -20 /var/tmp/log`;
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foreach (@output) {
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print "$_";
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}
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print <<END;
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</pre>
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</table>
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END
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&Header::closebox();
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&Header::closebigbox();
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&Header::closepage();
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exit;
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refreshpage();
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}
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&Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'});
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print <<END
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<form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
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<tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
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END
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;
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if ($netsettings{'BLUE_DEV'} ne '') {
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print " <input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} /> BLUE Snort";
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}
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if ($netsettings{'ORANGE_DEV'} ne '') {
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print " <input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} /> ORANGE Snort";
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}
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print " <input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} /> RED Snort";
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print <<END
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</td></tr>
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<tr>
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<td><br><br></td>
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</tr>
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<tr>
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<td><b>$Lang::tr{'ids rules update'}</b></td>
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</tr>
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<tr>
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<td><select name='RULES'>
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<option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
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<option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option>
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<option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
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<option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
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<option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
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</select>
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</td>
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</tr>
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<tr>
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<td><br />
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$Lang::tr{'ids rules license'} <a href='https://www.snort.org/subscribe' target='_blank'>www.snort.org</a>$Lang::tr{'ids rules license1'}<br /><br />
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$Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}
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</td>
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</tr>
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<tr>
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<td nowrap='nowrap'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
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</tr>
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<tr>
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<td width='30%' align='left'><br><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
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END
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;
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if ( -e "/var/tmp/snortrules.tar.gz"){
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my @Info = stat("/var/tmp/snortrules.tar.gz");
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$snortsettings{'INSTALLDATE'} = localtime($Info[9]);
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}
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print " $Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
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print <<END
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</tr>
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</table>
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<br><br>
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<table width='100%'>
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<tr>
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<td align='right'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
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</tr>
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</table>
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</form>
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END
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;
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if ($results ne '') {
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print "$results";
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}
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&Header::closebox();
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&Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
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# Output display table for rule files
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print "<table width='100%'><tr><td valign='top'><table>";
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print "<form method='post'>";
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# Local vars
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my $ruledisplaycnt = 1;
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my $rulecnt = keys %snortrules;
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$rulecnt++;
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$rulecnt = $rulecnt / 2;
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# Loop over each rule file
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foreach my $rulefile (sort keys(%snortrules)) {
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my $rulechecked = '';
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# Hide inkompatible Block rules
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if ($rulefile =~'-BLOCK.rules') {
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next;
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}
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# Check if reached half-way through rule file rules to start new column
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if ($ruledisplaycnt > $rulecnt) {
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print "</table></td><td valign='top'><table>";
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$ruledisplaycnt = 0;
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}
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# Check if rule file is enabled
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if ($snortrules{$rulefile}{"State"} eq 'Enabled') {
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$rulechecked = 'CHECKED';
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}
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# Create rule file link, vars array, and display flag
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my $rulefilelink = "?RULEFILE=$rulefile";
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my $rulefiletoclose = '';
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my @queryvars = ();
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my $displayrulefilerules = 0;
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# Check for passed in query string
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if ($ENV{'QUERY_STRING'}) {
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# Split out vars
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@queryvars = split(/\&/, $ENV{'QUERY_STRING'});
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# Loop over values
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foreach $value (@queryvars) {
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# Split out var pairs
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($var, $linkedrulefile) = split(/=/, $value);
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# Check if var is 'RULEFILE'
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if ($var eq 'RULEFILE') {
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# Check if rulefile equals linkedrulefile
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if ($rulefile eq $linkedrulefile) {
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# Set display flag
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$displayrulefilerules = 1;
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# Strip out rulefile from rulefilelink
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$rulefilelink =~ s/RULEFILE=$linkedrulefile//g;
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} else {
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# Add linked rule file to rulefilelink
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$rulefilelink .= "&RULEFILE=$linkedrulefile";
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}
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}
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}
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}
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# Strip out extra & & ? from rulefilelink
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$rulefilelink =~ s/^\?\&/\?/i;
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# Check for a single '?' and replace with page for proper link display
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if ($rulefilelink eq '?') {
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$rulefilelink = "ids.cgi";
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}
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# Output rule file name and checkbox
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print "<tr><td class='base' valign='top'><input type='checkbox' NAME='SNORT_RULE_$rulefile' $rulechecked> <a href='$rulefilelink'>$rulefile</a></td></tr>";
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print "<tr><td class='base' valign='top'>";
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# Check for empty 'Description'
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if ($snortrules{$rulefile}{'Description'} eq '') {
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print "<table width='100%'><tr><td class='base'>No description available</td></tr>";
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} else {
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# Output rule file 'Description'
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print "<table width='100%'><tr><td class='base'>$snortrules{$rulefile}{'Description'}</td></tr>";
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}
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# Check for display flag
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if ($displayrulefilerules) {
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# Rule file definition rule display
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print "<tr><td class='base' valign='top'><table border='0'><tr>";
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# Local vars
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my $ruledefdisplaycnt = 0;
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my $ruledefcnt = keys %{$snortrules{$rulefile}{"Definition"}};
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$ruledefcnt++;
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$ruledefcnt = $ruledefcnt / 2;
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# Loop over rule file rules
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foreach my $ruledef (sort {$a <=> $b} keys(%{$snortrules{$rulefile}{"Definition"}})) {
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# Local vars
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my $ruledefchecked = '';
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# If have display 2 rules, start new row
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if (($ruledefdisplaycnt % 2) == 0) {
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print "</tr><tr>";
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$ruledefdisplaycnt = 0;
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}
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# Check for rules state
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if ($snortrules{$rulefile}{'Definition'}{$ruledef}{'State'} eq 'Enabled') {
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$ruledefchecked = 'CHECKED';
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}
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# Create rule file rule's checkbox
|
|
$checkboxname = "SNORT_RULE_$rulefile";
|
|
$checkboxname .= "_$ruledef";
|
|
print "<td class='base'><input type='checkbox' NAME='$checkboxname' $ruledefchecked> $snortrules{$rulefile}{'Definition'}{$ruledef}{'Description'}</td>";
|
|
|
|
# Increment count
|
|
$ruledefdisplaycnt++;
|
|
}
|
|
|
|
# If do not have second rule for row, create empty cell
|
|
if (($ruledefdisplaycnt % 2) != 0) {
|
|
print "<td class='base'></td>";
|
|
}
|
|
|
|
# Close display table
|
|
print "</tr></table></td></tr>";
|
|
}
|
|
|
|
# Close display table
|
|
print "</table>";
|
|
|
|
# Increment ruledisplaycnt
|
|
$ruledisplaycnt++;
|
|
}
|
|
print "</td></tr></table></td></tr></table>";
|
|
print <<END
|
|
<table width='100%'>
|
|
<tr>
|
|
<td width='100%' align='right'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
|
|
<!-- space for future online help link -->
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</form>
|
|
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>";
|
|
&Header::closebox();
|
|
}
|
|
|
|
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 $url");
|
|
}
|
|
}
|
|
|
|
sub readrulesfile ($) {
|
|
my $rulefile = shift;
|
|
|
|
# Open rule file and read in contents
|
|
open(RULEFILE, "$snortrulepath/$rulefile") or die "Unable to read $rulefile!";
|
|
|
|
# Store file content in an array.
|
|
my @lines = <RULEFILE>;
|
|
|
|
# Close file.
|
|
close(RULEFILE);
|
|
|
|
# Loop over rule file contents
|
|
foreach my $line (@lines) {
|
|
# Remove whitespaces.
|
|
chomp $line;
|
|
|
|
# Skip blank lines.
|
|
next if ($line =~ /^\s*$/);
|
|
|
|
# Local vars.
|
|
my $sid;
|
|
my $msg;
|
|
|
|
# Gather rule sid and message from the ruleline.
|
|
if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) {
|
|
$msg = $1;
|
|
$sid = $2;
|
|
|
|
# Check if a rule has been found.
|
|
if ($sid && $msg) {
|
|
# Add rule to the snortrules hash.
|
|
$snortrules{$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'} = "Disabled";
|
|
} else {
|
|
# Otherwise the rule is enabled.
|
|
$snortrules{$rulefile}{$sid}{'State'} = "Enabled";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|