###############################################################################
# #
# 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 #
require '/var/ipfire/general-functions.pl';
require "${General::swroot}/lang.pl";
require "${General::swroot}/header.pl";
+require "${General::swroot}/ids-functions.pl";
my %color = ();
my %mainsettings = ();
my %netsettings = ();
-my %snortrules = ();
+my %idsrules = ();
my %snortsettings=();
my %rulesetsources = ();
my %cgiparams=();
# Get netsettings.
&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
-# Get all available ruleset locations.
-&General::readhash("${General::swroot}/snort/ruleset-sources.list", \%rulesetsources);
-
-my $rulestarball = "/var/tmp/snortrules.tar.gz";
my $snortrulepath = "/etc/snort/rules";
my $snortusedrulefilesfile = "${General::swroot}/snort/snort-used-rulefiles.conf";
my $errormessage;
-# Hook used to download and update the ruleset,
-# if the cgi got called from command line.
-if ($ENV{"REMOTE_ADDR"} eq "") {
- # Read snortsettings.
- &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
-
- # Download rules tarball.
- $errormessage = &downloadruleset();
-
- # Sleep for one second.
- sleep(1);
-
- # Check if there was an error message.
- unless ($errormessage) {
- # Call oinkmaster.
- &oinkmaster();
- } else {
- # Call logger and log the errormessage.
- system("logger -t oinkmaster $errormessage");
- }
-
-exit(0);
-}
-
&Header::showhttpheaders();
# Default settings for snort.
#Get GUI values
&Header::getcgihash(\%cgiparams);
-# Try to determine if oinkmaster is running.
-my $oinkmaster_pid = `pidof oinkmaster.pl -x`;
+# 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";
+
+ # Read the stored error message.
+ $errormessage = <FILE>;
+
+ # Close file.
+ close (FILE);
-# If oinkmaster is running display output.
-if ($oinkmaster_pid) {
- &working("$Lang::tr{'snort working'}");
+ # Delete the file, which is now not longer required.
+ unlink($IDS::storederrorfile);
}
-## Grab all available snort rules and store them in the snortrules hash.
+
+## 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'}) {
$errormessage = $Lang::tr{'could not download latest updates'};
}
- # 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";
-
- # Break loop.
- last;
- }
- }
- }
+ # Check if enought free disk space is availabe.
+ $errormessage = &IDS::checkdiskspace();
# Check if any errors happend.
unless ($errormessage) {
+ # Lock the webpage and print notice about downloading
+ # a new ruleset.
+ &working_notice("$Lang::tr{'snort working'}");
+
# Call subfunction to download the ruleset.
- $errormessage = &downloadruleset();
- }
+ $errormessage = &IDS::downloadruleset();
- # Sleep for 1 second
- sleep(1);
+ # Check if the downloader returned an error.
+ if ($errormessage) {
+ # Call function to store the errormessage.
+ &IDS::log_error($errormessage);
- # Check if the downloader returend any error message.
- unless ($errormessage) {
- # Call subfunction to launch oinkmaster.
- &oinkmaster();
+ # Preform a reload of the page.
+ &reload();
+ } else {
+ # Call subfunction to launch oinkmaster.
+ &IDS::oinkmaster();
- # Sleep for 1 seconds.
- sleep(1);
+ # Perform a reload of the page.
+ &reload();
+ }
}
# Save snort settings.
} elsif ($cgiparams{'SNORT'} eq $Lang::tr{'save'}) {
my $rulesdate;
# Check if a ruleset allready has been downloaded.
-if ( -f "$rulestarball"){
+if ( -f "$IDS::rulestarball"){
# Call stat on the filename to obtain detailed information.
- my @Info = stat("$rulestarball");
+ my @Info = stat("$IDS::rulestarball");
# Grab details about the creation time.
$rulesdate = localtime($Info[9]);
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
$lines++;
&Header::closebigbox();
&Header::closepage();
-sub working ($) {
- my $message = $_[0];
-
- &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
- &Header::openbigbox('100%', 'left', '', $errormessage);
- &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='1'>" );
- print <<END;
- <table>
- <tr>
- <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td>
- <td>$message</td>
- </tr>
- <tr>
- <td colspan='2' align='center'>
- <form method='post' action='$ENV{'SCRIPT_NAME'}'>
- <input type='image' alt='$Lang::tr{'reload'}' title='$Lang::tr{'reload'}' src='/images/view-refresh.png' />
- </form>
- </tr>
- </table>
+#
+## 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>$message</td>
+ </tr>
+ </table>
END
- &Header::closebox();
- &Header::closebigbox();
- &Header::closepage();
- exit;
+ &Header::closebox();
+ &Header::closebigbox();
+ &Header::closepage();
}
-sub downloadruleset {
- # Read proxysettings.
- my %proxysettings=();
- &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
-
- # Load required perl module to handle the download.
- use LWP::UserAgent;
-
- # Init the download module.
- my $downloader = LWP::UserAgent->new;
-
- # Set timeout to 10 seconds.
- $downloader->timeout(10);
-
- # Check if an upstream proxy is configured.
- if ($proxysettings{'UPSTREAM_PROXY'}) {
- my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
- my $proxy_url;
-
- # Check if we got a peer.
- if ($peer) {
- $proxy_url = "http://";
-
- # Check if the proxy requires authentication.
- if (($proxysettings{'UPSTREAM_USER'}) && ($proxysettings{'UPSTREAM_PASSWORD'})) {
- $proxy_url .= "$proxysettings{'UPSTREAM_USER'}\:$proxysettings{'UPSTREAM_PASSWORD'}\@";
- }
-
- # Add proxy server address and port.
- $proxy_url .= "$peer\:$peerport";
- } else {
- # Break and return error message.
- return "$Lang::tr{'could not download latest updates'}";
- }
-
- # Setup proxy settings.
- $downloader->proxy('http', $proxy_url);
- }
-
- # Grab the right url based on the configured vendor.
- my $url = $rulesetsources{$snortsettings{'RULES'}};
-
- # Check if the vendor requires an oinkcode and add it if needed.
- $url =~ s/\<oinkcode\>/$snortsettings{'OINKCODE'}/g;
-
- # Abort if no url could be determined for the vendor.
- unless ($url) {
- # Abort and return errormessage.
- return "$Lang::tr{'could not download latest updates'}";
- }
-
- # Pass the requested url to the downloader.
- my $request = HTTP::Request->new(GET => $url);
-
- # Perform the request and save the output into the "$rulestarball" file.
- my $response = $downloader->request($request, $rulestarball);
-
- # Check if there was any error.
- unless ($response->is_success) {
- return "$response->status_line";
- }
-
- # If we got here, everything worked fine. Return nothing.
- return;
-}
+#
+## A tiny function to perform a reload of the webpage after one second.
+#
+sub reload () {
+ print "<meta http-equiv='refresh' content='1'>\n";
-sub oinkmaster () {
- # Call oinkmaster to generate ruleset.
- system("/usr/local/bin/oinkmaster.pl -v -s -u file://$rulestarball -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules 2>&1 |logger -t oinkmaster");
+ # 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";
}
}
}
projects / ipfire-2.x.git / blobdiff