###############################################################################
# #
# 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 "${General::swroot}/ids-functions.pl";
my %color = ();
my %mainsettings = ();
-my %netsettings = ();
-my %snortrules = ();
-my %snortsettings=();
+my %idsrules = ();
+my %idssettings=();
+my %rulessettings=();
+my %rulesetsources = ();
my %cgiparams=();
my %checked=();
my %selected=();
+my %ignored=();
# Read-in main settings, for language, theme and colors.
&General::readhash("${General::swroot}/main/settings", \%mainsettings);
&General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
-# Get netsettings.
-&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
+# Get the available network zones, based on the config type of the system and store
+# the list of zones in an array.
+my @network_zones = &IDS::get_available_network_zones();
-&Header::showhttpheaders();
+my $errormessage;
+
+# Create files if they does not exist yet.
+&IDS::check_and_create_filelayout();
-# Default settings for snort.
-$snortsettings{'ENABLE_SNORT'} = 'off';
-$snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
-$snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
-$snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
-$snortsettings{'RULES'} = '';
-$snortsettings{'OINKCODE'} = '';
-$snortsettings{'INSTALLDATE'} = '';
+# Hash which contains the colour code of a network zone.
+my %colourhash = (
+ 'red' => $Header::colourred,
+ 'green' => $Header::colourgreen,
+ 'blue' => $Header::colourblue,
+ 'orange' => $Header::colourorange
+);
+
+&Header::showhttpheaders();
#Get GUI values
&Header::getcgihash(\%cgiparams);
-my $snortrulepath = "/etc/snort/rules";
-my $snortusedrulefilesfile = "${General::swroot}/snort/snort-used-rulefiles.conf";
-my $errormessage;
+## Add/edit an entry to the ignore file.
+#
+if (($cgiparams{'WHITELIST'} eq $Lang::tr{'add'}) || ($cgiparams{'WHITELIST'} eq $Lang::tr{'update'})) {
+
+ # Check if any input has been performed.
+ if ($cgiparams{'IGNORE_ENTRY_ADDRESS'} ne '') {
+
+ # Check if the given input is no valid IP-address or IP-address with subnet, display an error message.
+ if ((!&General::validip($cgiparams{'IGNORE_ENTRY_ADDRESS'})) && (!&General::validipandmask($cgiparams{'IGNORE_ENTRY_ADDRESS'}))) {
+ $errormessage = "$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 %ignored = ();
+ my $id;
+ my $status;
+
+ # Assign hash values.
+ my $new_entry_address = $cgiparams{'IGNORE_ENTRY_ADDRESS'};
+ my $new_entry_remark = $cgiparams{'IGNORE_ENTRY_REMARK'};
+
+ # Read-in ignoredfile.
+ &General::readhasharray($IDS::ignored_file, \%ignored);
+
+ # Check if we should edit an existing entry and got an ID.
+ if (($cgiparams{'WHITELIST'} eq $Lang::tr{'update'}) && ($cgiparams{'ID'})) {
+ # Assin the provided id.
+ $id = $cgiparams{'ID'};
+
+ # Undef the given ID.
+ undef($cgiparams{'ID'});
+
+ # Grab the configured status of the corresponding entry.
+ $status = $ignored{$id}[2];
+ } else {
+ # Each newly added entry automatically should be enabled.
+ $status = "enabled";
+
+ # Generate the ID for the new entry.
+ #
+ # Sort the keys by their ID and store them in an array.
+ my @keys = sort { $a <=> $b } keys %ignored;
+
+ # Reverse the key array.
+ my @reversed = reverse(@keys);
+
+ # Obtain the last used id.
+ my $last_id = @reversed[0];
+
+ # Increase the last id by one and use it as id for the new entry.
+ $id = ++$last_id;
+ }
+
+ # Add/Modify the entry to/in the ignored hash.
+ $ignored{$id} = ["$new_entry_address", "$new_entry_remark", "$status"];
+
+ # Write the changed ignored hash to the ignored file.
+ &General::writehasharray($IDS::ignored_file, \%ignored);
+
+ # Regenerate the ignore file.
+ &IDS::generate_ignore_file();
+ }
+
+ # Check if the IDS is running.
+ if(&IDS::ids_is_running()) {
+ # Call suricatactrl to perform a reload.
+ &IDS::call_suricatactrl("reload");
+ }
+
+## Toggle Enabled/Disabled for an existing entry on the ignore list.
+#
+
+} elsif ($cgiparams{'WHITELIST'} eq $Lang::tr{'toggle enable disable'}) {
+ my %ignored = ();
+
+ # Only go further, if an ID has been passed.
+ if ($cgiparams{'ID'}) {
+ # Assign the given ID.
+ my $id = $cgiparams{'ID'};
+
+ # Undef the given ID.
+ undef($cgiparams{'ID'});
+
+ # Read-in ignoredfile.
+ &General::readhasharray($IDS::ignored_file, \%ignored);
+
+ # Grab the configured status of the corresponding entry.
+ my $status = $ignored{$id}[2];
+
+ # Switch the status.
+ if ($status eq "disabled") {
+ $status = "enabled";
+ } else {
+ $status = "disabled";
+ }
+
+ # Modify the status of the existing entry.
+ $ignored{$id} = ["$ignored{$id}[0]", "$ignored{$id}[1]", "$status"];
-# Try to determine if oinkmaster is running.
-my $oinkmaster_pid = `pidof oinkmaster.pl -x`;
+ # Write the changed ignored hash to the ignored file.
+ &General::writehasharray($IDS::ignored_file, \%ignored);
-# If oinkmaster is running display output.
-if ($oinkmaster_pid) {
- &working("$Lang::tr{'snort working'}");
+ # Regenerate the ignore file.
+ &IDS::generate_ignore_file();
+
+ # Check if the IDS is running.
+ if(&IDS::ids_is_running()) {
+ # Call suricatactrl to perform a reload.
+ &IDS::call_suricatactrl("reload");
+ }
+ }
+
+## Remove entry from ignore list.
+#
+} elsif ($cgiparams{'WHITELIST'} eq $Lang::tr{'remove'}) {
+ my %ignored = ();
+
+ # Read-in ignoredfile.
+ &General::readhasharray($IDS::ignored_file, \%ignored);
+
+ # Drop entry from the hash.
+ delete($ignored{$cgiparams{'ID'}});
+
+ # Undef the given ID.
+ undef($cgiparams{'ID'});
+
+ # Write the changed ignored hash to the ignored file.
+ &General::writehasharray($IDS::ignored_file, \%ignored);
+
+ # Regenerate the ignore file.
+ &IDS::generate_ignore_file();
+
+ # Check if the IDS is running.
+ if(&IDS::ids_is_running()) {
+ # Call suricatactrl to perform a reload.
+ &IDS::call_suricatactrl("reload");
+ }
+}
+
+# Check if the page is locked, in this case, the ids_page_lock_file exists.
+if (-e $IDS::ids_page_lock_file) {
+ # Lock the webpage and print notice about autoupgrade of the ruleset
+ # is in progess.
+ &working_notice("$Lang::tr{'ids ruleset autoupdate in progress'}");
+
+ # Loop and check if the file still exists.
+ while(-e $IDS::ids_page_lock_file) {
+ # Sleep for a second and re-check.
+ sleep 1;
+ }
+
+ # Page has been unlocked, perform a reload.
+ &reload();
}
-## Grab all available snort rules and store them in the snortrules hash.
+# 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.
+ $errormessage = <FILE>;
+
+ # Close file.
+ close (FILE);
+
+ # Delete the file, which is now not longer required.
+ unlink($IDS::storederrorfile);
+}
+
+## Grab all available rules and store them in the idsrules hash.
#
-# Open snort rules directory and do a directory listing.
-opendir(DIR, $snortrulepath) or die $!;
+# Open rules directory and do a directory listing.
+opendir(DIR, $IDS::rulespath) or die $!;
# Loop through the direcory.
while (my $file = readdir(DIR)) {
# We only want files.
- next unless (-f "$snortrulepath/$file");
+ next unless (-f "$IDS::rulespath/$file");
# Ignore empty files.
- next if (-z "$snortrulepath/$file");
+ next if (-z "$IDS::rulespath/$file");
# Use a regular expression to find files ending in .rules
next unless ($file =~ m/\.rules$/);
# Ignore files which are not read-able.
- next unless (-R "$snortrulepath/$file");
+ next unless (-R "$IDS::rulespath/$file");
+
+ # Skip whitelist rules file.
+ next if( $file eq "whitelist.rules");
# Call subfunction to read-in rulefile and add rules to
- # the snortrules hash.
+ # the idsrules hash.
&readrulesfile("$file");
}
# Gather used rulefiles.
#
# Check if the file for activated rulefiles is not empty.
-if(-f $snortusedrulefilesfile) {
+if(-f $IDS::used_rulefiles_file) {
# Open the file for used rulefile and read-in content.
- open(FILE, $snortusedrulefilesfile) or die "Could not open $snortusedrulefilesfile. $!\n";
+ open(FILE, $IDS::used_rulefiles_file) or die "Could not open $IDS::used_rulefiles_file. $!\n";
# Read-in content.
my @lines = <FILE>;
next if ($line =~ /^\s*$/);
# Gather rule sid and message from the ruleline.
- if ($line =~ /.*include \$RULE_PATH\/(.*)/) {
+ if ($line =~ /.*- (.*)/) {
my $rulefile = $1;
- # Add the rulefile to the %snortrules hash.
- $snortrules{$rulefile}{'Rulefile'}{'State'} = "on";
+ # Check if the current rulefile exists in the %idsrules hash.
+ # If not, the file probably does not exist anymore or contains
+ # no rules.
+ if($idsrules{$rulefile}) {
+ # Add the rulefile state to the %idsrules hash.
+ $idsrules{$rulefile}{'Rulefile'}{'State'} = "on";
+ }
}
}
}
-# Save ruleset.
-if ($cgiparams{'RULESET'} eq $Lang::tr{'update'}) {
- my $enabled_sids_file = "${General::swroot}/snort/oinkmaster-enabled-sids.conf";
- my $disabled_sids_file = "${General::swroot}/snort/oinkmaster-disabled-sids.conf";
+# Save ruleset configuration.
+if ($cgiparams{'RULESET'} eq $Lang::tr{'save'}) {
+ my %oldsettings;
+ my %rulesetsources;
+
+ # Read-in current (old) IDS settings.
+ &General::readhash("$IDS::rules_settings_file", \%oldsettings);
+
+ # Get all available ruleset locations.
+ &General::readhash("$IDS::rulesetsourcesfile", \%rulesetsources);
+
+ # Prevent form name from been stored in conf file.
+ delete $cgiparams{'RULESET'};
+
+ # Grab the URL based on the choosen vendor.
+ my $url = $rulesetsources{$cgiparams{'RULES'}};
+
+ # Check if the choosen vendor (URL) requires an subscription/oinkcode.
+ if ($url =~ /\<oinkcode\>/ ) {
+ # Check if an subscription/oinkcode has been provided.
+ if ($cgiparams{'OINKCODE'}) {
+ # Check if the oinkcode contains unallowed chars.
+ unless ($cgiparams{'OINKCODE'} =~ /^[a-z0-9]+$/) {
+ $errormessage = $Lang::tr{'invalid input for oink code'};
+ }
+ } else {
+ # Print an error message, that an subsription/oinkcode is required for this
+ # vendor.
+ $errormessage = $Lang::tr{'ids oinkcode required'};
+ }
+ }
+
+ # Go on if there are no error messages.
+ if (!$errormessage) {
+ # Store settings into settings file.
+ &General::writehash("$IDS::rules_settings_file", \%cgiparams);
+
+ # Check if the the automatic rule update hass been touched.
+ if($cgiparams{'AUTOUPDATE_INTERVAL'} ne $oldsettings{'AUTOUPDATE_INTERVAL'}) {
+ # Call suricatactrl to set the new interval.
+ &IDS::call_suricatactrl("cron", $cgiparams{'AUTOUPDATE_INTERVAL'});
+ }
+
+ # Check if a ruleset is present - if not or the source has been changed download it.
+ if((! %idsrules) || ($oldsettings{'RULES'} ne $cgiparams{'RULES'})) {
+ # Check if the red device is active.
+ unless (-e "${General::swroot}/red/active") {
+ $errormessage = "$Lang::tr{'could not download latest updates'} - $Lang::tr{'system is offline'}";
+ }
- # Arrays to store sid which should be added to the corresponding files.
- my @enabled_sids;
- my @disabled_sids;
+ # Check if enought free disk space is availabe.
+ if(&IDS::checkdiskspace()) {
+ $errormessage = "$Lang::tr{'not enough disk space'}";
+ }
+
+ # Check if any errors happend.
+ unless ($errormessage) {
+ # Lock the webpage and print notice about downloading
+ # a new ruleset.
+ &working_notice("$Lang::tr{'ids working'}");
+
+ # Call subfunction to download the ruleset.
+ if(&IDS::downloadruleset()) {
+ $errormessage = $Lang::tr{'could not download latest updates'};
+
+ # Call function to store the errormessage.
+ &IDS::_store_error_message($errormessage);
+ } else {
+ # Call subfunction to launch oinkmaster.
+ &IDS::oinkmaster();
+ }
+
+ # Check if the IDS is running.
+ if(&IDS::ids_is_running()) {
+ # Call suricatactrl to stop the IDS - because of the changed
+ # ruleset - the use has to configure it before suricata can be
+ # used again.
+ &IDS::call_suricatactrl("stop");
+ }
+
+ # Perform a reload of the page.
+ &reload();
+ }
+ }
+ }
+
+# Save ruleset.
+} elsif ($cgiparams{'RULESET'} eq $Lang::tr{'ids apply'}) {
+ # Arrays to store which rulefiles have been enabled and will be used.
my @enabled_rulefiles;
- # Loop through the hash of snortrules.
- foreach my $rulefile(keys %snortrules) {
+ # Hash to store the user-enabled and disabled sids.
+ my %enabled_disabled_sids;
+
+ # 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 $rulefile (keys %snortrules) {
+ # Read-in the files for enabled/disabled sids.
+ # This will be done by calling the read_enabled_disabled_sids_file function two times
+ # and merge the returned hashes together into the enabled_disabled_sids hash.
+ %enabled_disabled_sids = (
+ &read_enabled_disabled_sids_file($IDS::disabled_sids_file),
+ &read_enabled_disabled_sids_file($IDS::enabled_sids_file));
+
+ # 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.
- push(@enabled_sids, $sid);
+ # Add/Modify the sid to/in the enabled_disabled_sids hash.
+ $enabled_disabled_sids{$sid} = "enabled";
# Drop item from cgiparams hash.
delete $cgiparams{$rulefile}{$sid};
}
} else {
# Look if the rule is enabled.
- if ($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.
- # Add it to the disabled_sids array.
- push(@disabled_sids, $sid);
+ # Add/Modify it to/in the enabled_disabled_sids hash.
+ $enabled_disabled_sids{$sid} = "disabled";
# Drop item from cgiparams hash.
delete $cgiparams{$rulefile}{$sid};
}
# Open enabled sid's file for writing.
- open(FILE, ">$enabled_sids_file") or die "Could not write to $enabled_sids_file. $!\n";
-
- # Write header to file.
- print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
+ open(ENABLED_FILE, ">$IDS::enabled_sids_file") or die "Could not write to $IDS::enabled_sids_file. $!\n";
- # Check if the enabled_sids array contains any sid's.
- if (@enabled_sids) {
- # Loop through the array of enabled sids and write them to the file.
- foreach my $sid (@enabled_sids) {
- print FILE "enablesid $sid\n";
+ # Open disabled sid's file for writing.
+ open(DISABLED_FILE, ">$IDS::disabled_sids_file") or die "Could not write to $IDS::disabled_sids_file. $!\n";
+
+ # Write header to the files.
+ print ENABLED_FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
+ print DISABLED_FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
+
+ # Check if the hash for enabled/disabled files contains any entries.
+ if (%enabled_disabled_sids) {
+ # Loop through the hash.
+ foreach my $sid (keys %enabled_disabled_sids) {
+ # Check if the sid is enabled.
+ if ($enabled_disabled_sids{$sid} eq "enabled") {
+ # Print the sid to the enabled_sids file.
+ print ENABLED_FILE "enablesid $sid\n";
+ # Check if the sid is disabled.
+ } elsif ($enabled_disabled_sids{$sid} eq "disabled") {
+ # Print the sid to the disabled_sids file.
+ print DISABLED_FILE "disablesid $sid\n";
+ # Something strange happende - skip the current sid.
+ } else {
+ next;
+ }
}
}
- # Close file after writing.
- close(FILE);
+ # Close file for enabled_sids after writing.
+ close(ENABLED_FILE);
- # Open disabled sid's file for writing.
- open(FILE, ">$disabled_sids_file") or die "Could not write to $disabled_sids_file. $!\n";
+ # Close file for disabled_sids after writing.
+ close(DISABLED_FILE);
- # Write header to file.
- print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
+ # Call function to generate and write the used rulefiles file.
+ &IDS::write_used_rulefiles_file(@enabled_rulefiles);
- # Check if the enabled_sids array contains any sid's.
- if (@disabled_sids) {
- # Loop through the array of disabled sids and write them to the file.
- foreach my $sid (@disabled_sids) {
- print FILE "disablesid $sid\n";
- }
- }
+ # Lock the webpage and print message.
+ &working_notice("$Lang::tr{'ids apply ruleset changes'}");
- # Close file after writing.
- close(FILE);
+ # Call oinkmaster to alter the ruleset.
+ &IDS::oinkmaster();
- # Open file for used rulefiles.
- open (FILE, ">$snortusedrulefilesfile") or die "Could not write to $snortusedrulefilesfile. $!\n";
+ # Check if the IDS is running.
+ if(&IDS::ids_is_running()) {
+ # Call suricatactrl to perform a reload.
+ &IDS::call_suricatactrl("reload");
+ }
- # Write header to file.
- print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
+ # Reload page.
+ &reload();
- # Check if the enabled_rulefiles array contains any entries.
- if (@enabled_rulefiles) {
- # Loop through the array of rulefiles which should be loaded and write the to the file.
- foreach my $file (@enabled_rulefiles) {
- print FILE "include \$RULE_PATH/$file\n";
- }
+# Download new ruleset.
+} elsif ($cgiparams{'RULESET'} eq $Lang::tr{'update ruleset'}) {
+ # Check if the red device is active.
+ unless (-e "${General::swroot}/red/active") {
+ $errormessage = "$Lang::tr{'could not download latest updates'} - $Lang::tr{'system is offline'}";
}
- # Close file after writing.
- close(FILE);
+ # Check if enought free disk space is availabe.
+ if(&IDS::checkdiskspace()) {
+ $errormessage = "$Lang::tr{'not enough disk space'}";
+ }
- # Call oinkmaster to alter the ruleset.
- &oinkmaster();
+ # Check if any errors happend.
+ unless ($errormessage) {
+ # Lock the webpage and print notice about downloading
+ # a new ruleset.
+ &working_notice("$Lang::tr{'ids download new ruleset'}");
-# 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();
+ # Call subfunction to download the ruleset.
+ if(&IDS::downloadruleset()) {
+ $errormessage = $Lang::tr{'could not download latest updates'};
+
+ # Call function to store the errormessage.
+ &IDS::_store_error_message($errormessage);
- # Sleep for 3 seconds.
- sleep(3);
+ # Preform a reload of the page.
+ &reload();
+ } else {
+ # Call subfunction to launch oinkmaster.
+ &IDS::oinkmaster();
- # Gather return of the external wget.
- $return = `cat /var/tmp/log 2>/dev/null`;
+ # Check if the IDS is running.
+ if(&IDS::ids_is_running()) {
+ # Call suricatactrl to perform a reload.
+ &IDS::call_suricatactrl("reload");
}
- # Check if there was an error.
- if ($return =~ "ERROR") {
- # Store error message for display.
- $errormessage = "<br /><pre>".$return."</pre>";
- } else {
- # Remove logfile.
- unlink("/var/tmp/log");
+ # Perform a reload of the page.
+ &reload();
+ }
+ }
+# Save IDS settings.
+} elsif ($cgiparams{'IDS'} eq $Lang::tr{'save'}) {
+ my %oldidssettings;
+ my $reload_page;
+ my $monitored_zones = 0;
+
+ # Read-in current (old) IDS settings.
+ &General::readhash("$IDS::ids_settings_file", \%oldidssettings);
+
+ # Prevent form name from been stored in conf file.
+ delete $cgiparams{'IDS'};
+
+ # Check if the IDS should be enabled.
+ if ($cgiparams{'ENABLE_IDS'} eq "on") {
+ # Check if any ruleset is available. Otherwise abort and display an error.
+ unless(%idsrules) {
+ $errormessage = $Lang::tr{'ids no ruleset available'};
+ }
- # Call subfunction to launch oinkmaster.
- &oinkmaster();
+ # Loop through the array of available interfaces.
+ foreach my $zone (@network_zones) {
+ # Convert interface name into upper case.
+ my $zone_upper = uc($zone);
- # Sleep for 2 seconds.
- sleep(2);
+ # Check if the IDS is enabled for this interaces.
+ if ($cgiparams{"ENABLE_IDS_$zone_upper"}) {
+ # Increase count.
+ $monitored_zones++;
}
}
- }
-# Save snort settings.
-} elsif ($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 = $Lang::tr{'invalid input for oink code'};
+ # Check if at least one zone should be monitored, or show an error.
+ unless ($monitored_zones >= 1) {
+ $errormessage = $Lang::tr{'ids no network zone'};
}
}
# Go on if there are no error messages.
if (!$errormessage) {
# Store settings into settings file.
- &General::writehash("${General::swroot}/snort/settings", \%cgiparams);
+ &General::writehash("$IDS::ids_settings_file", \%cgiparams);
+ }
- # Create/Remove control files for snort.
- if ($snortsettings{'ENABLE_SNORT'} eq 'on') {
- system ('/usr/bin/touch', "${General::swroot}/snort/enable");
- } else {
- unlink "${General::swroot}/snort/enable";
- }
+ # Generate file to store the home net.
+ &IDS::generate_home_net_file();
- if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on') {
- system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
- } else {
- unlink "${General::swroot}/snort/enable_green";
- }
+ # Temporary variable to set the ruleaction.
+ # Default is "drop" to use suricata as IPS.
+ my $ruleaction="drop";
- if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on') {
- system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
- } else {
- unlink "${General::swroot}/snort/enable_blue";
- }
+ # Check if the traffic only should be monitored.
+ if($cgiparams{'MONITOR_TRAFFIC_ONLY'} eq 'on') {
+ # Switch the ruleaction to "alert".
+ # Suricata acts as an IDS only.
+ $ruleaction="alert";
+ }
- if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on') {
- system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
- } else {
- unlink "${General::swroot}/snort/enable_orange";
+ # Write the modify sid's file and pass the taken ruleaction.
+ &IDS::write_modify_sids_file($ruleaction);
+
+ # Check if "MONITOR_TRAFFIC_ONLY" has been changed.
+ if($cgiparams{'MONITOR_TRAFFIC_ONLY'} ne $oldidssettings{'MONITOR_TRAFFIC_ONLY'}) {
+ # Check if a ruleset exists.
+ if (%idsrules) {
+ # Lock the webpage and print message.
+ &working_notice("$Lang::tr{'ids working'}");
+
+ # Call oinkmaster to alter the ruleset.
+ &IDS::oinkmaster();
+
+ # Set reload_page to "True".
+ $reload_page="True";
}
+ }
- if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on') {
- system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
+ # Check if the IDS currently is running.
+ if(&IDS::ids_is_running()) {
+ # Check if ENABLE_IDS is set to on.
+ if($cgiparams{'ENABLE_IDS'} eq "on") {
+ # Call suricatactrl to perform a reload of suricata.
+ &IDS::call_suricatactrl("reload");
} else {
- unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
+ # Call suricatactrl to stop suricata.
+ &IDS::call_suricatactrl("stop");
}
+ } else {
+ # Call suricatactrl to start suricata.
+ &IDS::call_suricatactrl("start");
+ }
- # Call snortctrl to restart snort
- system('/usr/local/bin/snortctrl restart >/dev/null');
+ # Check if the page should be reloaded.
+ if ($reload_page) {
+ # Perform a reload of the page.
+ &reload();
}
}
-# Read-in snortsettings
-&General::readhash("${General::swroot}/snort/settings", \%snortsettings);
-
-$checked{'ENABLE_SNORT'}{'off'} = '';
-$checked{'ENABLE_SNORT'}{'on'} = '';
-$checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
-$checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
-$checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
-$checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
-$checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
-$checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
-$checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
-$checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
-$checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
-$checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
+# Read-in idssettings and rulesetsettings
+&General::readhash("$IDS::ids_settings_file", \%idssettings);
+&General::readhash("$IDS::rules_settings_file", \%rulessettings);
+
+# If no autoupdate intervall has been configured yet, set default value.
+unless(exists($rulessettings{'AUTOUPDATE_INTERVAL'})) {
+ # Set default to "weekly".
+ $rulessettings{'AUTOUPDATE_INTERVAL'} = 'weekly';
+}
+
+# Read-in ignored hosts.
+&General::readhasharray("$IDS::settingsdir/ignored", \%ignored);
+
+$checked{'ENABLE_IDS'}{'off'} = '';
+$checked{'ENABLE_IDS'}{'on'} = '';
+$checked{'ENABLE_IDS'}{$idssettings{'ENABLE_IDS'}} = "checked='checked'";
+$checked{'MONITOR_TRAFFIC_ONLY'}{'off'} = '';
+$checked{'MONITOR_TRAFFIC_ONLY'}{'on'} = '';
+$checked{'MONITOR_TRAFFIC_ONLY'}{$idssettings{'MONITOR_TRAFFIC_ONLY'}} = "checked='checked'";
$selected{'RULES'}{'nothing'} = '';
$selected{'RULES'}{'community'} = '';
$selected{'RULES'}{'emerging'} = '';
$selected{'RULES'}{'registered'} = '';
$selected{'RULES'}{'subscripted'} = '';
-$selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
+$selected{'RULES'}{$rulessettings{'RULES'}} = "selected='selected'";
+$selected{'AUTOUPDATE_INTERVAL'}{'off'} = '';
+$selected{'AUTOUPDATE_INTERVAL'}{'daily'} = '';
+$selected{'AUTOUPDATE_INTERVAL'}{'weekly'} = '';
+$selected{'AUTOUPDATE_INTERVAL'}{$rulessettings{'AUTOUPDATE_INTERVAL'}} = "selected='selected'";
&Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
### Java Script ###
+print"<script>\n";
+
+# Java script variable declaration for show and hide.
+print"var show = \"$Lang::tr{'ids show'}\"\;\n";
+print"var hide = \"$Lang::tr{'ids hide'}\"\;\n";
+
print <<END
-<script>
+ // JQuery function to show/hide the text input field for
+ // Oinkcode/Subscription code.
+ \$(function() {
+ \$('#RULES').change(function(){
+ if(\$('#RULES').val() == 'registered') {
+ \$('#code').show();
+ } else if(\$('#RULES').val() == 'subscripted') {
+ \$('#code').show();
+ } else if(\$('#RULES').val() == 'emerging_pro') {
+ \$('#code').show();
+ } else {
+ \$('#code').hide();
+ }
+ });
+ });
+
// Tiny java script function to show/hide the rules
// of a given category.
function showhide(tblname) {
\$("#" + tblname).toggle();
+
+ // Get current content of the span element.
+ var content = document.getElementById("span_" + tblname);
+
+ if (content.innerHTML === show) {
+ content.innerHTML = hide;
+ } else {
+ content.innerHTML = show;
+ }
}
</script>
END
&Header::closebox();
}
+# Draw current state of the IDS
&Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'});
+
+# Check if the IDS is running and obtain the process-id.
+my $pid = &IDS::ids_is_running();
+
+# Display some useful information, if suricata daemon is running.
+if ($pid) {
+ # Gather used memory.
+ my $memory = &get_memory_usage($pid);
+
+ print <<END;
+ <table width='95%' cellspacing='0' class='tbl'>
+ <tr>
+ <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</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</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{'intrusion detection'}</strong></th>
+ </tr>
+
+ <tr>
+ <td class='base'>$Lang::tr{'guardian daemon'}</td>
+ <td align='center' width='75%' bgcolor='${Header::colourred}'><font color='white'><strong>$Lang::tr{'stopped'}</strong></font></td>
+ </tr>
+ </table>
+END
+}
+
+# Only show this area, if a ruleset is present.
+if (%idsrules) {
+
+ print <<END
+
+ <br><br><h2>$Lang::tr{'settings'}</h2>
+
+ <form method='post' action='$ENV{'SCRIPT_NAME'}'>
+ <table width='100%' border='0'>
+ <tr>
+ <td class='base' colspan='2'>
+ <input type='checkbox' name='ENABLE_IDS' $checked{'ENABLE_IDS'}{'on'}> $Lang::tr{'ids enable'}
+ </td>
+
+ <td class='base' colspan='2'>
+ <input type='checkbox' name='MONITOR_TRAFFIC_ONLY' $checked{'MONITOR_TRAFFIC_ONLY'}{'on'}> $Lang::tr{'ids monitor traffic only'}
+ </td>
+ </tr>
+
+ <tr>
+ <td><br><br></td>
+ <td><br><br></td>
+ <td><br><br></td>
+ <td><br><br></td>
+ </tr>
+
+ <tr>
+ <td colspan='4'><b>$Lang::tr{'ids monitored interfaces'}</b><br></td>
+ </tr>
+
+ <tr>
+END
+;
+
+ # Loop through the array of available networks and print config options.
+ foreach my $zone (@network_zones) {
+ my $checked_input;
+ my $checked_forward;
+
+ # Convert current zone name to upper case.
+ my $zone_upper = uc($zone);
+
+ # Set zone name.
+ my $zone_name = $zone;
+
+ # Dirty hack to get the correct language string for the red zone.
+ if ($zone eq "red") {
+ $zone_name = "red1";
+ }
+
+ # Grab checkbox status from settings hash.
+ if ($idssettings{"ENABLE_IDS_$zone_upper"} eq "on") {
+ $checked_input = "checked = 'checked'";
+ }
+
+ print "<td class='base' width='25%'>\n";
+ print "<input type='checkbox' name='ENABLE_IDS_$zone_upper' $checked_input>\n";
+ print " $Lang::tr{'enabled on'}<font color='$colourhash{$zone}'> $Lang::tr{$zone_name}</font>\n";
+ print "</td>\n";
+ }
+
print <<END
-<form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
-<tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
+ </tr>
+ </table>
+
+ <br><br>
+
+ <table width='100%'>
+ <tr>
+ <td align='right'><input type='submit' name='IDS' value='$Lang::tr{'save'}' /></td>
+ </tr>
+ </table>
+ </form>
END
;
-if ($netsettings{'BLUE_DEV'} ne '') {
- print " <input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} /> BLUE Snort";
-}
-if ($netsettings{'ORANGE_DEV'} ne '') {
- print " <input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} /> ORANGE Snort";
+
}
- print " <input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} /> RED Snort";
+
+&Header::closebox();
+
+# Draw elements for ruleset configuration.
+&Header::openbox('100%', 'center', $Lang::tr{'ids ruleset settings'});
print <<END
-</td></tr>
-<tr>
- <td><br><br></td>
-</tr>
-<tr>
- <td><b>$Lang::tr{'ids rules update'}</b></td>
-</tr>
-<tr>
- <td><select name='RULES'>
- <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
+<form method='post' action='$ENV{'SCRIPT_NAME'}'>
+ <table width='100%' border='0'>
+ <tr>
+ <td><b>$Lang::tr{'ids rules update'}</b></td>
+ <td><b>$Lang::tr{'ids automatic rules update'}</b></td>
+ </tr>
+
+ <tr>
+ <td><select name='RULES' id='RULES'>
<option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option>
+ <option value='emerging_pro' $selected{'RULES'}{'emerging_pro'} >$Lang::tr{'emerging pro 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='RULESET' value='$Lang::tr{'download new ruleset'}' />
+ </td>
+
+ <td>
+ <select name='AUTOUPDATE_INTERVAL'>
+ <option value='off' $selected{'AUTOUPDATE_INTERVAL'}{'off'} >- $Lang::tr{'Disabled'} -</option>
+ <option value='daily' $selected{'AUTOUPDATE_INTERVAL'}{'daily'} >$Lang::tr{'Daily'}</option>
+ <option value='weekly' $selected{'AUTOUPDATE_INTERVAL'}{'weekly'} >$Lang::tr{'Weekly'}</option>
+ </select>
+ </td>
+ </tr>
+
+ <tr>
+ <td colspan='2'><br><br></td>
+ </tr>
+
+ <tr style='display:none' id='code'>
+ <td colspan='2'>Oinkcode: <input type='text' size='40' name='OINKCODE' value='$rulessettings{'OINKCODE'}'></td>
+ </tr>
+
+ <tr>
+ <td> </td>
+
+ <td align='right'>
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'}: $snortsettings{'INSTALLDATE'}</td>";
+ # Show the "Update Ruleset"-Button only if a ruleset has been downloaded yet and automatic updates are disabled.
+ if ((%idsrules) && ($rulessettings{'AUTOUPDATE_INTERVAL'} eq "off")) {
+ # Display button to update the ruleset.
+ print"<input type='submit' name='RULESET' value='$Lang::tr{'update ruleset'}'>\n";
+ }
+print <<END;
+ <input type='submit' name='RULESET' value='$Lang::tr{'save'}'>
+ </td>
-print <<END
-</tr>
-</table>
-<br><br>
-<table width='100%'>
-<tr>
- <td align='right'><input type='submit' name='SNORT' value='$Lang::tr{'save'}' /></td>
-</tr>
-</table>
+ </tr>
+ </table>
</form>
END
;
&Header::closebox();
-&Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
- print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n";
+#
+# Whitelist / Ignorelist
+#
+&Header::openbox('100%', 'center', $Lang::tr{'guardian ignored hosts'});
+
+print <<END;
+ <table width='100%'>
+ <tr>
+ <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'ip address'}</b></td>
+ <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'remark'}</b></td>
+ <td class='base' colspan='3' bgcolor='$color{'color20'}'></td>
+ </tr>
+END
+ # Check if some hosts have been added to be ignored.
+ if (keys (%ignored)) {
+ my $col = "";
+
+ # Loop through all entries of the hash.
+ while( (my $key) = each %ignored) {
+ # Assign data array positions to some nice variable names.
+ my $address = $ignored{$key}[0];
+ my $remark = $ignored{$key}[1];
+ my $status = $ignored{$key}[2];
+
+ # Check if the key (id) number is even or not.
+ if ($cgiparams{'ID'} eq $key) {
+ $col="bgcolor='${Header::colouryellow}'";
+ } elsif ($key % 2) {
+ $col="bgcolor='$color{'color22'}'";
+ } else {
+ $col="bgcolor='$color{'color20'}'";
+ }
- # Output display table for rule files
- print "<table width='100%'>\n";
+ # Choose icon for the checkbox.
+ my $gif;
+ my $gdesc;
- # Local variable required for java script to show/hide
- # rules of a rulefile.
- my $rulesetcount = 1;
+ # Check if the status is enabled and select the correct image and description.
+ if ($status eq 'enabled' ) {
+ $gif = 'on.gif';
+ $gdesc = $Lang::tr{'click to disable'};
+ } else {
+ $gif = 'off.gif';
+ $gdesc = $Lang::tr{'click to enable'};
+ }
- # Loop over each rule file
- foreach my $rulefile (sort keys(%snortrules)) {
- my $rulechecked = '';
+print <<END;
+ <tr>
+ <td width='20%' class='base' $col>$address</td>
+ <td width='65%' class='base' $col>$remark</td>
+
+ <td align='center' $col>
+ <form method='post' action='$ENV{'SCRIPT_NAME'}'>
+ <input type='hidden' name='WHITELIST' value='$Lang::tr{'toggle enable disable'}' />
+ <input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$gif' alt='$gdesc' title='$gdesc' />
+ <input type='hidden' name='ID' value='$key' />
+ </form>
+ </td>
+
+ <td align='center' $col>
+ <form method='post' action='$ENV{'SCRIPT_NAME'}'>
+ <input type='hidden' name='WHITELIST' value='$Lang::tr{'edit'}' />
+ <input type='image' name='$Lang::tr{'edit'}' src='/images/edit.gif' alt='$Lang::tr{'edit'}' title='$Lang::tr{'edit'}' />
+ <input type='hidden' name='ID' value='$key' />
+ </form>
+ </td>
+
+ <td align='center' $col>
+ <form method='post' name='$key' 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='$key'>
+ <input type='hidden' name='WHITELIST' value='$Lang::tr{'remove'}'>
+ </form>
+ </td>
+ </tr>
+END
+ }
+ } else {
+ # Print notice that currently no hosts are ignored.
+ print "<tr>\n";
+ print "<td class='base' colspan='2'>$Lang::tr{'guardian no entries'}</td>\n";
+ print "</tr>\n";
+ }
- # Check if rule file is enabled
- if ($snortrules{$rulefile}{'Rulefile'}{'State'} eq 'on') {
- $rulechecked = 'CHECKED';
+ print "</table>\n";
+
+ # Section to add new elements or edit existing ones.
+print <<END;
+ <br>
+ <hr>
+ <br>
+
+ <div align='center'>
+ <table width='100%'>
+END
+
+ # Assign correct headline and button text.
+ my $buttontext;
+ my $entry_address;
+ my $entry_remark;
+
+ # Check if an ID (key) has been given, in this case an existing entry should be edited.
+ if ($cgiparams{'ID'} ne '') {
+ $buttontext = $Lang::tr{'update'};
+ print "<tr><td class='boldbase' colspan='3'><b>$Lang::tr{'update'}</b></td></tr>\n";
+
+ # Grab address and remark for the given key.
+ $entry_address = $ignored{$cgiparams{'ID'}}[0];
+ $entry_remark = $ignored{$cgiparams{'ID'}}[1];
+ } else {
+ $buttontext = $Lang::tr{'add'};
+ print "<tr><td class='boldbase' colspan='3'><b>$Lang::tr{'dnsforward add a new entry'}</b></td></tr>\n";
}
- # Table and rows for the rule files.
- print"<tr>\n";
- print"<td class='base' width='5%'>\n";
- print"<input type='checkbox' name='$rulefile' $rulechecked>\n";
- print"</td>\n";
- print"<td class='base' width='90%'><b>$rulefile</b></td>\n";
- print"<td class='base' width='5%' align='right'>\n";
- print"<a href=\"javascript:showhide('ruleset$rulesetcount')\">SHOW</a>\n";
- print"</td>\n";
- print"</tr>\n";
-
- # Rows which will be hidden per default and will contain the single rules.
- print"<tr style='display:none' id='ruleset$rulesetcount'>\n";
- print"<td colspan='3'>\n";
-
- # Local vars
- my $lines;
- my $rows;
- my $col;
-
- # New table for the single rules.
+print <<END;
+ <form method='post' action='$ENV{'SCRIPT_NAME'}'>
+ <input type='hidden' name='ID' value='$cgiparams{'ID'}'>
+ <tr>
+ <td width='30%'>$Lang::tr{'ip address'}: </td>
+ <td width='50%'><input type='text' name='IGNORE_ENTRY_ADDRESS' value='$entry_address' size='24' /></td>
+
+ <td width='30%'>$Lang::tr{'remark'}: </td>
+ <td wicth='50%'><input type='text' name=IGNORE_ENTRY_REMARK value='$entry_remark' size='24' /></td>
+ <td align='center' width='20%'><input type='submit' name='WHITELIST' value='$buttontext' /></td>
+ </tr>
+ </form>
+ </table>
+ </div>
+END
+
+&Header::closebox();
+
+# Only show the section for configuring the ruleset if one is present.
+if (%idsrules) {
+ # Load neccessary perl modules for file stat and to format the timestamp.
+ use File::stat;
+ use POSIX qw( strftime );
+
+ # Call stat on the rulestarball.
+ my $stat = stat("$IDS::rulestarball");
+
+ # Get timestamp the file creation.
+ my $mtime = $stat->mtime;
+
+ # Convert into human read-able format.
+ my $rulesdate = strftime('%Y-%m-%d %H:%M:%S', localtime($mtime));
+
+ &Header::openbox('100%', 'LEFT', "$Lang::tr{'intrusion detection system rules'} ($rulesdate)" );
+
+ print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n";
+
+ # Output display table for rule files
print "<table width='100%'>\n";
- # Loop over rule file rules
- foreach my $sid (sort {$a <=> $b} keys(%{$snortrules{$rulefile}})) {
+ # Loop over each rule file
+ foreach my $rulefile (sort keys(%idsrules)) {
+ my $rulechecked = '';
+
+ # Check if rule file is enabled
+ if ($idsrules{$rulefile}{'Rulefile'}{'State'} eq 'on') {
+ $rulechecked = 'CHECKED';
+ }
+
+ # Convert rulefile name into category name.
+ my $categoryname = &_rulefile_to_category($rulefile);
+
+ # Table and rows for the rule files.
+ print"<tr>\n";
+ print"<td class='base' width='5%'>\n";
+ print"<input type='checkbox' name='$rulefile' $rulechecked>\n";
+ print"</td>\n";
+ print"<td class='base' width='90%'><b>$rulefile</b></td>\n";
+ print"<td class='base' width='5%' align='right'>\n";
+ print"<a href=\"javascript:showhide('$categoryname')\"><span id='span_$categoryname'>$Lang::tr{'ids show'}</span></a>\n";
+ print"</td>\n";
+ print"</tr>\n";
+
+ # Rows which will be hidden per default and will contain the single rules.
+ print"<tr style='display:none' id='$categoryname'>\n";
+ print"<td colspan='3'>\n";
+
# Local vars
- my $ruledefchecked = '';
+ my $lines;
+ my $rows;
+ my $col;
- # Skip rulefile itself.
- next if ($sid eq "Rulefile");
+ # New table for the single rules.
+ print "<table width='100%'>\n";
- # If 2 rules have been displayed, start a new row
- if (($lines % 2) == 0) {
- print "</tr><tr>\n";
+ # Loop over rule file rules
+ foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) {
+ # Local vars
+ my $ruledefchecked = '';
- # Increase rows by once.
- $rows++;
- }
+ # Skip rulefile itself.
+ next if ($sid eq "Rulefile");
- # Colour lines.
- if ($rows % 2) {
- $col="bgcolor='$color{'color20'}'";
- } else {
- $col="bgcolor='$color{'color22'}'";
- }
+ # If 2 rules have been displayed, start a new row
+ if (($lines % 2) == 0) {
+ print "</tr><tr>\n";
- # Set rule state
- if ($snortrules{$rulefile}{$sid}{'State'} eq 'on') {
- $ruledefchecked = 'CHECKED';
- }
+ # Increase rows by once.
+ $rows++;
+ }
- # Create rule checkbox and display rule description
- 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>";
+ # Colour lines.
+ if ($rows % 2) {
+ $col="bgcolor='$color{'color20'}'";
+ } else {
+ $col="bgcolor='$color{'color22'}'";
+ }
- # Increment rule count
- $lines++;
- }
+ # Set rule state
+ if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') {
+ $ruledefchecked = 'CHECKED';
+ }
- # If do not have a second rule for row, create empty cell
- if (($lines % 2) != 0) {
- print "<td class='base'></td>";
- }
+ # Create rule checkbox and display rule description
+ 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%' $col>$idsrules{$rulefile}{$sid}{'Description'}</td>";
- # Close display table
- print "</tr></table></td></tr>";
+ # Increment rule count
+ $lines++;
+ }
- # Finished whith the rule file, increase count.
- $rulesetcount++;
- }
+ # If do not have a second rule for row, create empty cell
+ if (($lines % 2) != 0) {
+ print "<td class='base'></td>";
+ }
- # Close display table
- print "</table>";
+ # Close display table
+ print "</tr></table></td></tr>";
+ }
+
+ # Close display table
+ print "</table>";
print <<END
<table width='100%'>
<tr>
- <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'>
- <!-- space for future online help link -->
- </td>
+ <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'ids apply'}'></td>
</tr>
</table>
</form>
END
;
-&Header::closebox();
+ &Header::closebox();
+}
+
&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 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 $rulefile = shift;
# Open rule file and read in contents
- open(RULEFILE, "$snortrulepath/$rulefile") or die "Unable to read $rulefile!";
+ open(RULEFILE, "$IDS::rulespath/$rulefile") or die "Unable to read $rulefile!";
# Store file content in an array.
my @lines = <RULEFILE>;
# Check if a rule has been found.
if ($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}{$sid}{'State'} = "on";
}
}
}
- }
+ }
+}
+
+#
+## Function to get the used memory of a given process-id.
+#
+sub get_memory_usage($) {
+ my ($pid) = @_;
+
+ my $memory = 0;
+
+ # Try to open the status file for the given process-id on the pseudo
+ # file system proc.
+ if (open(FILE, "/proc/$pid/status")) {
+ # Loop through the entire file.
+ while (<FILE>) {
+ # Splitt current line content and store them into variables.
+ my ($key, $value) = split(":", $_, 2);
+
+ # Check if the current key is the one which contains the memory usage.
+ # The wanted one is VmRSS which contains the Real-memory (resident set)
+ # of the entire process.
+ if ($key eq "VmRSS") {
+ # Found the memory usage add it to the memory variable.
+ $memory += $value;
+
+ # Break the loop.
+ last;
+ }
+ }
+
+ # Close file handle.
+ close(FILE);
+
+ # Return memory usage.
+ return $memory;
+ }
+
+ # If the file could not be open, return nothing.
+ return;
+}
+
+#
+## Function to read-in the given enabled or disables sids file.
+#
+sub read_enabled_disabled_sids_file($) {
+ my ($file) = @_;
+
+ # Temporary hash to store the sids and their state. It will be
+ # returned at the end of this function.
+ my %temphash;
+
+ # Open the given filename.
+ open(FILE, "$file") or die "Could not open $file. $!\n";
+
+ # Loop through the file.
+ while(<FILE>) {
+ # Remove newlines.
+ chomp $_;
+
+ # Skip blank lines.
+ next if ($_ =~ /^\s*$/);
+
+ # Skip coments.
+ next if ($_ =~ /^\#/);
+
+ # Splitt line into sid and state part.
+ my ($state, $sid) = split(" ", $_);
+
+ # Skip line if the sid is not numeric.
+ next unless ($sid =~ /\d+/ );
+
+ # Check if the sid was enabled.
+ if ($state eq "enablesid") {
+ # Add the sid and its state as enabled to the temporary hash.
+ $temphash{$sid} = "enabled";
+ # Check if the sid was disabled.
+ } elsif ($state eq "disablesid") {
+ # Add the sid and its state as disabled to the temporary hash.
+ $temphash{$sid} = "disabled";
+ # Invalid state - skip the current sid and state.
+ } else {
+ next;
+ }
+ }
+
+ # Close filehandle.
+ close(FILE);
+
+ # Return the hash.
+ return %temphash;
+}
+
+#
+## Private function to convert a given rulefile to a category name.
+## ( No file extension anymore and if the name contained a dot, it
+## would be replaced by a underline sign.)
+#
+sub _rulefile_to_category($) {
+ my ($filename) = @_;
+
+ # Splitt the filename into single chunks and store them in a
+ # temorary array.
+ my @parts = split(/\./, $filename);
+
+ # Return / Remove last element of the temporary array.
+ # This removes the file extension.
+ pop @parts;
+
+ # Join together the single elements of the temporary array.
+ # If these are more than one, use a "underline" for joining.
+ my $category = join '_', @parts;
+
+ # Return the converted filename.
+ return $category;
}
projects / ipfire-2.x.git / blobdiff