mirror of
https://github.com/vincentmli/bpfire.git
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2682a1d17a
The process changes it name to "Suricata-Main" which is why the previous method did not work. Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
2044 lines
58 KiB
Perl
2044 lines
58 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) 2007-2020 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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use experimental 'smartmatch';
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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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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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require "${General::swroot}/ids-functions.pl";
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require "${General::swroot}/network-functions.pl";
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# Import ruleset providers file.
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require "$IDS::rulesetsourcesfile";
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my %color = ();
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my %mainsettings = ();
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my %idsrules = ();
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my %idssettings=();
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my %used_providers=();
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my %cgiparams=();
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my %checked=();
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my %selected=();
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my %ignored=();
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# Read-in main settings, for language, theme and colors.
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&General::readhash("${General::swroot}/main/settings", \%mainsettings);
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&General::readhash("/srv/web/ipfire/html/themes/ipfire/include/colors.txt", \%color);
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# Get the available network zones, based on the config type of the system and store
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# the list of zones in an array.
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my @network_zones = &Network::get_available_network_zones();
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# Check if openvpn is started and add it to the array of network zones.
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if ( -e "/var/run/openvpn.pid") {
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push(@network_zones, "ovpn");
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}
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my $errormessage;
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# Create files if they does not exist yet.
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&IDS::check_and_create_filelayout();
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# Hash which contains the colour code of a network zone.
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my %colourhash = (
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'red' => $Header::colourred,
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'green' => $Header::colourgreen,
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'blue' => $Header::colourblue,
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'orange' => $Header::colourorange,
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'ovpn' => $Header::colourovpn
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);
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&Header::showhttpheaders();
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#Get GUI values
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&Header::getcgihash(\%cgiparams);
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## Add/edit an entry to the ignore file.
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#
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if (($cgiparams{'WHITELIST'} eq $Lang::tr{'add'}) || ($cgiparams{'WHITELIST'} eq $Lang::tr{'update'})) {
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# Check if any input has been performed.
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if ($cgiparams{'IGNORE_ENTRY_ADDRESS'} ne '') {
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# Check if the given input is no valid IP-address or IP-address with subnet, display an error message.
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if ((!&General::validip($cgiparams{'IGNORE_ENTRY_ADDRESS'})) && (!&General::validipandmask($cgiparams{'IGNORE_ENTRY_ADDRESS'}))) {
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$errormessage = "$Lang::tr{'guardian invalid address or subnet'}";
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}
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} else {
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$errormessage = "$Lang::tr{'guardian empty input'}";
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}
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# Go further if there was no error.
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if ($errormessage eq '') {
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my %ignored = ();
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my $id;
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my $status;
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# Assign hash values.
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my $new_entry_address = $cgiparams{'IGNORE_ENTRY_ADDRESS'};
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my $new_entry_remark = $cgiparams{'IGNORE_ENTRY_REMARK'};
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# Read-in ignoredfile.
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&General::readhasharray($IDS::ignored_file, \%ignored) if (-e $IDS::ignored_file);
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# Check if we should edit an existing entry and got an ID.
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if (($cgiparams{'WHITELIST'} eq $Lang::tr{'update'}) && ($cgiparams{'ID'})) {
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# Assin the provided id.
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$id = $cgiparams{'ID'};
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# Undef the given ID.
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undef($cgiparams{'ID'});
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# Grab the configured status of the corresponding entry.
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$status = $ignored{$id}[2];
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} else {
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# Each newly added entry automatically should be enabled.
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$status = "enabled";
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# Generate the ID for the new entry.
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#
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# Sort the keys by their ID and store them in an array.
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my @keys = sort { $a <=> $b } keys %ignored;
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# Reverse the key array.
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my @reversed = reverse(@keys);
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# Obtain the last used id.
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my $last_id = @reversed[0];
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# Increase the last id by one and use it as id for the new entry.
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$id = ++$last_id;
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}
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# Add/Modify the entry to/in the ignored hash.
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$ignored{$id} = ["$new_entry_address", "$new_entry_remark", "$status"];
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# Write the changed ignored hash to the ignored file.
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&General::writehasharray($IDS::ignored_file, \%ignored);
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# Regenerate the ignore file.
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&IDS::generate_ignore_file();
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}
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# Check if the IDS is running.
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if(&IDS::ids_is_running()) {
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# Call suricatactrl to perform a reload.
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&IDS::call_suricatactrl("reload");
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}
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## Toggle Enabled/Disabled for an existing entry on the ignore list.
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#
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} elsif ($cgiparams{'WHITELIST'} eq $Lang::tr{'toggle enable disable'}) {
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my %ignored = ();
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# Only go further, if an ID has been passed.
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if ($cgiparams{'ID'}) {
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# Assign the given ID.
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my $id = $cgiparams{'ID'};
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# Undef the given ID.
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undef($cgiparams{'ID'});
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# Read-in ignoredfile.
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&General::readhasharray($IDS::ignored_file, \%ignored) if (-e $IDS::ignored_file);
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# Grab the configured status of the corresponding entry.
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my $status = $ignored{$id}[2];
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# Switch the status.
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if ($status eq "disabled") {
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$status = "enabled";
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} else {
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$status = "disabled";
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}
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# Modify the status of the existing entry.
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$ignored{$id} = ["$ignored{$id}[0]", "$ignored{$id}[1]", "$status"];
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# Write the changed ignored hash to the ignored file.
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&General::writehasharray($IDS::ignored_file, \%ignored);
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# Regenerate the ignore file.
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&IDS::generate_ignore_file();
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# Check if the IDS is running.
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if(&IDS::ids_is_running()) {
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# Call suricatactrl to perform a reload.
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&IDS::call_suricatactrl("reload");
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}
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}
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## Remove entry from ignore list.
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#
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} elsif ($cgiparams{'WHITELIST'} eq $Lang::tr{'remove'}) {
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my %ignored = ();
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# Read-in ignoredfile.
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&General::readhasharray($IDS::ignored_file, \%ignored) if (-e $IDS::ignored_file);
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# Drop entry from the hash.
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delete($ignored{$cgiparams{'ID'}});
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# Undef the given ID.
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undef($cgiparams{'ID'});
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# Write the changed ignored hash to the ignored file.
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&General::writehasharray($IDS::ignored_file, \%ignored);
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# Regenerate the ignore file.
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&IDS::generate_ignore_file();
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# Check if the IDS is running.
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if(&IDS::ids_is_running()) {
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# Call suricatactrl to perform a reload.
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&IDS::call_suricatactrl("reload");
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}
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}
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# Check if the page is locked, in this case, the ids_page_lock_file exists.
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if (-e $IDS::ids_page_lock_file) {
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# Lock the webpage and print notice about autoupgrade of the ruleset
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# is in progess.
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&working_notice("$Lang::tr{'ids ruleset autoupdate in progress'}");
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# Loop and check if the file still exists.
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while(-e $IDS::ids_page_lock_file) {
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# Sleep for a second and re-check.
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sleep 1;
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}
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# Page has been unlocked, perform a reload.
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&reload();
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}
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# Check if any error has been stored.
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if (-e $IDS::storederrorfile) {
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# Open file to read in the stored error message.
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open(FILE, "<$IDS::storederrorfile") or die "Could not open $IDS::storederrorfile. $!\n";
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# Read the stored error message.
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$errormessage = <FILE>;
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# Close file.
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close (FILE);
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# Delete the file, which is now not longer required.
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unlink($IDS::storederrorfile);
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}
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# Gather ruleset details.
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if ($cgiparams{'RULESET'}) {
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## Grab all available rules and store them in the idsrules hash.
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#
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# Get enabled providers.
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my @enabled_providers = &IDS::get_enabled_providers();
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# Open rules directory and do a directory listing.
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opendir(DIR, $IDS::rulespath) or die $!;
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# Loop through the direcory.
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while (my $file = readdir(DIR)) {
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# We only want files.
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next unless (-f "$IDS::rulespath/$file");
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# Ignore empty files.
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next if (-z "$IDS::rulespath/$file");
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# Use a regular expression to find files ending in .rules
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next unless ($file =~ m/\.rules$/);
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# Ignore files which are not read-able.
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next unless (-R "$IDS::rulespath/$file");
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# Skip whitelist rules file.
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next if( $file eq "whitelist.rules");
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# Splitt vendor from filename.
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my @filename_parts = split(/-/, $file);
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# Assign vendor name for easy processing.
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my $vendor = @filename_parts[0];
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# Skip rulefile if the provider is disabled.
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next unless ($vendor ~~ @enabled_providers);
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# Call subfunction to read-in rulefile and add rules to
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# the idsrules hash.
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&readrulesfile("$file");
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}
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closedir(DIR);
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# Loop through the array of used providers.
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foreach my $provider (@enabled_providers) {
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# Gather used rulefiles.
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my @used_rulesfiles = &IDS::get_provider_used_rulesfiles($provider);
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# Loop through the array of used rulesfiles.
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foreach my $rulefile (@used_rulesfiles) {
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# Check if the current rulefile exists in the %idsrules hash.
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# If not, the file probably does not exist anymore or contains
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# no rules.
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if($idsrules{$rulefile}) {
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# Add the rulefile state to the %idsrules hash.
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$idsrules{$rulefile}{'Rulefile'}{'State'} = "on";
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}
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}
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}
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}
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# Save ruleset.
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if ($cgiparams{'RULESET'} eq $Lang::tr{'ids apply'}) {
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# Get enabled providers.
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my @enabled_providers = &IDS::get_enabled_providers();
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# Loop through the array of enabled providers.
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foreach my $provider (@enabled_providers) {
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# Hash to store the used-enabled and disabled sids.
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my %enabled_disabled_sids;
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# Hash to store the enabled rulefiles for the current processed provider.
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my %used_rulefiles;
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# Get name of the file which holds the ruleset modification of the provider.
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my $modifications_file = &IDS::get_provider_ruleset_modifications_file($provider);
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# Get the name of the file which contains the used rulefiles for this provider.
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my $used_rulefiles_file = &IDS::get_provider_used_rulesfiles_file($provider);
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# Read-in modifications file, if exists.
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&General::readhash("$modifications_file", \%enabled_disabled_sids) if (-f "$modifications_file");
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# Loop through the hash of idsrules.
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foreach my $rulefile (keys %idsrules) {
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# Split the rulefile to get the vendor.
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my @filename_parts = split(/-/, $rulefile);
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# Assign rulefile vendor.
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my $rulefile_vendor = @filename_parts[0];
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# Skip the rulefile if the vendor is not our current processed provider.
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next unless ($rulefile_vendor eq $provider);
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# Check if the rulefile is enabled.
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if ($cgiparams{$rulefile} eq "on") {
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# Add the rulefile to the hash of enabled rulefiles of this provider.
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$used_rulefiles{$rulefile} = "enabled";
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# Drop item from cgiparams hash.
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delete $cgiparams{$rulefile};
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}
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# Loop through the single rules of the rulefile.
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foreach my $sid (keys %{$idsrules{$rulefile}}) {
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# Skip the current sid if it is not numeric.
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next unless ($sid =~ /\d+/ );
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# Check if there exists a key in the cgiparams hash for this sid.
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if (exists($cgiparams{$sid})) {
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# Look if the rule is disabled.
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if ($idsrules{$rulefile}{$sid}{'State'} eq "off") {
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# Check if the state has been set to 'on'.
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if ($cgiparams{$sid} eq "on") {
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# Add/Modify the sid to/in the enabled_disabled_sids hash.
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$enabled_disabled_sids{$sid} = "enabled";
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# Drop item from cgiparams hash.
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delete $cgiparams{$rulefile}{$sid};
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}
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}
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} else {
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# Look if the rule is enabled.
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if ($idsrules{$rulefile}{$sid}{'State'} eq "on") {
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# Check if the state is 'on' and should be disabled.
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# In this case there is no entry
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# for the sid in the cgiparams hash.
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# Add/Modify it to/in the enabled_disabled_sids hash.
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$enabled_disabled_sids{$sid} = "disabled";
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# Drop item from cgiparams hash.
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delete $cgiparams{$rulefile}{$sid};
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}
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}
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}
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}
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# Check if the hash for enabled/disabled sids contains any entries.
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if (%enabled_disabled_sids) {
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# Write the modifications file.
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&General::writehash("$modifications_file", \%enabled_disabled_sids);
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}
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# Write the used rulefiles file.
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&General::writehash("$used_rulefiles_file", \%used_rulefiles);
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}
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# Call function to generate and write the used rulefiles file.
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&IDS::write_used_rulefiles_file(@enabled_providers);
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# Lock the webpage and print message.
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&oinkmaster_web();
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# Check if the IDS is running.
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if(&IDS::ids_is_running()) {
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# Call suricatactrl to perform a reload.
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&IDS::call_suricatactrl("reload");
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}
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# Reload page.
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&reload();
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# Download new ruleset.
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} elsif ($cgiparams{'PROVIDERS'} eq $Lang::tr{'ids force ruleset update'}) {
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# Assign given provider handle.
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my $provider = $cgiparams{'PROVIDER'};
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# Check if the red device is active.
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unless (-e "${General::swroot}/red/active") {
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$errormessage = "$Lang::tr{'could not download latest updates'} - $Lang::tr{'system is offline'}";
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}
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# Check if enought free disk space is availabe.
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if(&IDS::checkdiskspace()) {
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$errormessage = "$Lang::tr{'not enough disk space'}";
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}
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# Check if any errors happend.
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unless ($errormessage) {
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# Lock the webpage and print notice about downloading
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# a new ruleset.
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&_open_working_notice("$Lang::tr{'ids download new ruleset'}");
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# Call subfunction to download the ruleset.
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my $return = &IDS::downloadruleset($provider);
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# Check if the download function gives a return code.
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if ($return) {
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# Handle different return codes.
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if ($return eq "not modified") {
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$errormessage = "$provider - $Lang::tr{'ids ruleset is up to date'}";
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} else {
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$errormessage = "$provider - $Lang::tr{'could not download latest updates'}: $return";
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}
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# Call function to store the errormessage.
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&IDS::_store_error_message($errormessage);
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# Close the working notice.
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&_close_working_notice();
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# Preform a reload of the page.
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&reload();
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} else {
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# Call subfunction to launch oinkmaster.
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&oinkmaster_web("nolock");
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# Close the working notice.
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&_close_working_notice();
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# Check if the IDS is running.
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if(&IDS::ids_is_running()) {
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# Call suricatactrl to perform a reload.
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&IDS::call_suricatactrl("reload");
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}
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# Perform a reload of the page.
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&reload();
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}
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}
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# Reset a provider to it's defaults.
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} elsif ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'ids reset provider'}") {
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# Get enabled providers.
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my @enabled_providers = &IDS::get_enabled_providers();
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# Grab provider handle from cgihash.
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my $provider = $cgiparams{'PROVIDER'};
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# Lock the webpage and print message.
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&working_notice("$Lang::tr{'ids apply ruleset changes'}");
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# Get the name of the file which contains the used rulefiles for this provider.
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my $used_rulefiles_file = &IDS::get_provider_used_rulesfiles_file($provider);
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# Remove the file if it exists.
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unlink("$used_rulefiles_file") if (-f "$used_rulefiles_file");
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# Call function to get the path and name for file which holds the ruleset modifications
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# for the given provider.
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my $modifications_file = &IDS::get_provider_ruleset_modifications_file($provider);
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# Check if the file exists.
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if (-f $modifications_file) {
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# Remove the file, as requested.
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unlink("$modifications_file");
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}
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# Write used rulesfiles file.
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&IDS::write_used_rulefiles_file(@enabled_providers);
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# Regenerate ruleset.
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&oinkmaster_web();
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# Check if the IDS is running.
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if(&IDS::ids_is_running()) {
|
|
# Get amount of enabled providers.
|
|
my $amount = @enabled_providers;
|
|
|
|
# Check if at least one enabled provider remains.
|
|
if ($amount >= 1) {
|
|
# Call suricatactrl to perform a reload.
|
|
&IDS::call_suricatactrl("reload");
|
|
|
|
# Stop suricata if no enabled provider remains.
|
|
} else {
|
|
# Call suricatactrel to perform the stop.
|
|
&IDS::call_suricatactrl("stop");
|
|
}
|
|
}
|
|
|
|
# Undefine providers flag.
|
|
undef($cgiparams{'PROVIDERS'});
|
|
|
|
# Reload page.
|
|
&reload();
|
|
|
|
# Save IDS settings.
|
|
} elsif ($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);
|
|
|
|
# Get enabled providers.
|
|
my @enabled_providers = &IDS::get_enabled_providers();
|
|
|
|
# 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 at least one provider is enabled. Otherwise abort and display an error.
|
|
unless(@enabled_providers) {
|
|
$errormessage = $Lang::tr{'ids no enabled ruleset provider'};
|
|
}
|
|
|
|
# Loop through the array of available interfaces.
|
|
foreach my $zone (@network_zones) {
|
|
# Convert interface name into upper case.
|
|
my $zone_upper = uc($zone);
|
|
|
|
# Check if the IDS is enabled for these interfaces.
|
|
if ($cgiparams{"ENABLE_IDS_$zone_upper"}) {
|
|
# Increase count.
|
|
$monitored_zones++;
|
|
}
|
|
}
|
|
|
|
# Check if at least one zone should be monitored, or show an error.
|
|
unless ($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("$IDS::ids_settings_file", \%cgiparams);
|
|
}
|
|
|
|
# Generate file to store the home net.
|
|
&IDS::generate_home_net_file();
|
|
|
|
# Generate file to the store the DNS servers.
|
|
&IDS::generate_dns_servers_file();
|
|
|
|
# Generate file to store the HTTP ports.
|
|
&IDS::generate_http_ports_file();
|
|
|
|
# Check if the IDS currently is running.
|
|
if(&IDS::ids_is_running()) {
|
|
# Check if ENABLE_IDS is set to on.
|
|
if($cgiparams{'ENABLE_IDS'} eq "on") {
|
|
# Call suricatactrl to perform a reload of suricata.
|
|
&IDS::call_suricatactrl("reload");
|
|
} else {
|
|
# Call suricatactrl to stop suricata.
|
|
&IDS::call_suricatactrl("stop");
|
|
}
|
|
} else {
|
|
# Call suricatactrl to start suricata.
|
|
&IDS::call_suricatactrl("start");
|
|
}
|
|
|
|
# Check if the page should be reloaded.
|
|
if ($reload_page) {
|
|
# Perform a reload of the page.
|
|
&reload();
|
|
}
|
|
|
|
# Toggle Enable/Disable autoupdate for a provider
|
|
} elsif ($cgiparams{'AUTOUPDATE'} eq $Lang::tr{'toggle enable disable'}) {
|
|
my %used_providers = ();
|
|
|
|
# Only go further, if an ID has been passed.
|
|
if ($cgiparams{'ID'}) {
|
|
# Assign the given ID.
|
|
my $id = $cgiparams{'ID'};
|
|
|
|
# Undef the given ID.
|
|
undef($cgiparams{'ID'});
|
|
|
|
# Read-in providers settings file.
|
|
&General::readhasharray($IDS::providers_settings_file, \%used_providers);
|
|
|
|
# Grab the configured status of the corresponding entry.
|
|
my $status_autoupdate = $used_providers{$id}[2];
|
|
|
|
# Switch the status.
|
|
if ($status_autoupdate eq "disabled") {
|
|
$status_autoupdate = "enabled";
|
|
} else {
|
|
$status_autoupdate = "disabled";
|
|
}
|
|
|
|
# Modify the status of the existing entry.
|
|
$used_providers{$id} = ["$used_providers{$id}[0]", "$used_providers{$id}[1]", "$status_autoupdate", "$used_providers{$id}[3]", "$used_providers{$id}[4]"];
|
|
|
|
# Write the changed hash to the providers settings file.
|
|
&General::writehasharray($IDS::providers_settings_file, \%used_providers);
|
|
}
|
|
|
|
# Add/Edit a provider to the list of used providers.
|
|
#
|
|
} elsif (($cgiparams{'PROVIDERS'} eq "$Lang::tr{'add'}") || ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'update'}")) {
|
|
my %used_providers = ();
|
|
|
|
# Read-in providers settings file.
|
|
&General::readhasharray("$IDS::providers_settings_file", \%used_providers);
|
|
|
|
# Assign some nice human-readable values.
|
|
my $provider = $cgiparams{'PROVIDER'};
|
|
my $subscription_code = $cgiparams{'SUBSCRIPTION_CODE'};
|
|
my $status_autoupdate;
|
|
my $mode;
|
|
my $regenerate_ruleset_required;
|
|
|
|
# Handle autoupdate checkbox.
|
|
if ($cgiparams{'ENABLE_AUTOUPDATE'} eq "on") {
|
|
$status_autoupdate = "enabled";
|
|
} else {
|
|
$status_autoupdate = "disabled";
|
|
}
|
|
|
|
# Handle monitor traffic only checkbox.
|
|
if ($cgiparams{'MONITOR_TRAFFIC_ONLY'} eq "on") {
|
|
$mode = "IDS";
|
|
} else {
|
|
$mode = "IPS";
|
|
}
|
|
|
|
# Check if we are going to add a new provider.
|
|
if ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'add'}") {
|
|
# Loop through the hash of used providers.
|
|
foreach my $id ( keys %used_providers) {
|
|
# Check if the choosen provider is already in use.
|
|
if ($used_providers{$id}[0] eq "$provider") {
|
|
# Assign error message.
|
|
$errormessage = "$Lang::tr{'ids the choosen provider is already in use'}";
|
|
}
|
|
}
|
|
}
|
|
|
|
# Check if the provider requires a subscription code.
|
|
if ($IDS::Ruleset::Providers{$provider}{'requires_subscription'} eq "True") {
|
|
# Check if an subscription code has been provided.
|
|
if ($subscription_code) {
|
|
# Check if the code contains unallowed chars.
|
|
unless ($subscription_code =~ /^[a-z0-9]+$/) {
|
|
$errormessage = $Lang::tr{'invalid input for subscription code'};
|
|
}
|
|
} else {
|
|
# Print an error message, that an subsription code is required for this
|
|
# provider.
|
|
$errormessage = $Lang::tr{'ids subscription code required'};
|
|
}
|
|
}
|
|
|
|
# Go further if there was no error.
|
|
if ($errormessage eq '') {
|
|
my $id;
|
|
my $status;
|
|
|
|
# Check if we should edit an existing entry and got an ID.
|
|
if (($cgiparams{'PROVIDERS'} eq $Lang::tr{'update'}) && ($cgiparams{'ID'})) {
|
|
# Assin the provided id.
|
|
$id = $cgiparams{'ID'};
|
|
|
|
# Undef the given ID.
|
|
undef($cgiparams{'ID'});
|
|
|
|
# Grab the configured mode.
|
|
my $stored_mode = $used_providers{$id}[4];
|
|
|
|
# Check if the ruleset action (mode) has been changed.
|
|
if ($stored_mode ne $mode) {
|
|
# It has been changed, so the ruleset needs to be regenerated.
|
|
$regenerate_ruleset_required = "1";
|
|
}
|
|
|
|
# Grab the configured status of the corresponding entry.
|
|
$status = $used_providers{$id}[3];
|
|
} 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 %used_providers;
|
|
|
|
# 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 used providers hash..
|
|
$used_providers{$id} = ["$provider", "$subscription_code", "$status_autoupdate", "$status", "$mode"];
|
|
|
|
# Write the changed hash to the providers settings file.
|
|
&General::writehasharray($IDS::providers_settings_file, \%used_providers);
|
|
|
|
# Check if a new provider will be added.
|
|
if ($cgiparams{'PROVIDERS'} eq $Lang::tr{'add'}) {
|
|
# Check if the red device is active.
|
|
unless (-e "${General::swroot}/red/active") {
|
|
$errormessage = "$Lang::tr{'ids could not add provider'} - $Lang::tr{'system is offline'}";
|
|
}
|
|
|
|
# Check if enough free disk space is availabe.
|
|
if(&IDS::checkdiskspace()) {
|
|
$errormessage = "$Lang::tr{'ids could not add provider'} - $Lang::tr{'not enough disk space'}";
|
|
}
|
|
|
|
# Check if any errors happend.
|
|
unless ($errormessage) {
|
|
# Lock the webpage and print notice about downloading
|
|
# a new ruleset.
|
|
&working_notice("$Lang::tr{'ids working'}");
|
|
|
|
# Download the ruleset.
|
|
my $return = &IDS::downloadruleset($provider);
|
|
|
|
# Check if the downloader returned a code.
|
|
if ($return) {
|
|
$errormessage = "$Lang::tr{'ids could not add provider'} - $Lang::tr{'ids unable to download the ruleset'}: $return";
|
|
|
|
# Call function to store the errormessage.
|
|
&IDS::_store_error_message($errormessage);
|
|
|
|
# Remove the configured provider again.
|
|
&remove_provider($id);
|
|
} else {
|
|
# Extract the ruleset
|
|
&IDS::extractruleset($provider);
|
|
|
|
# Move the ruleset.
|
|
&IDS::move_tmp_ruleset();
|
|
|
|
# Cleanup temporary directory.
|
|
&IDS::cleanup_tmp_directory();
|
|
}
|
|
|
|
# Perform a reload of the page.
|
|
&reload();
|
|
} else {
|
|
# Remove the configured provider again.
|
|
&remove_provider($id);
|
|
}
|
|
}
|
|
|
|
# Check if the ruleset has to be regenerated.
|
|
if ($regenerate_ruleset_required) {
|
|
# Call oinkmaster web function.
|
|
&oinkmaster_web();
|
|
|
|
# Perform a reload of the page.
|
|
&reload();
|
|
}
|
|
}
|
|
|
|
# Undefine providers flag.
|
|
undef($cgiparams{'PROVIDERS'});
|
|
|
|
## Toggle Enabled/Disabled for an existing provider.
|
|
#
|
|
} elsif ($cgiparams{'PROVIDERS'} eq $Lang::tr{'toggle enable disable'}) {
|
|
my %used_providers = ();
|
|
my $provider_includes_action;
|
|
|
|
# Value if oinkmaster has to be executed.
|
|
my $oinkmaster = "False";
|
|
|
|
# Only go further, if an ID has been passed.
|
|
if ($cgiparams{'ID'}) {
|
|
# Assign the given ID.
|
|
my $id = $cgiparams{'ID'};
|
|
|
|
# Undef the given ID.
|
|
undef($cgiparams{'ID'});
|
|
|
|
# Read-in file which contains the provider settings.
|
|
&General::readhasharray($IDS::providers_settings_file, \%used_providers);
|
|
|
|
# Grab the configured status of the corresponding entry.
|
|
my $status = $used_providers{$id}[3];
|
|
|
|
# Grab the provider handle.
|
|
my $provider_handle = $used_providers{$id}[0];
|
|
|
|
# Switch the status.
|
|
if ($status eq "enabled") {
|
|
$status = "disabled";
|
|
|
|
# Set the provider includes action to "remove" for removing the entry.
|
|
$provider_includes_action = "remove";
|
|
} else {
|
|
$status = "enabled";
|
|
|
|
# Set the provider includes action to "add".
|
|
$provider_includes_action = "add";
|
|
|
|
# This operation requires to launch oinkmaster.
|
|
$oinkmaster = "True";
|
|
}
|
|
|
|
# Modify the status of the existing entry.
|
|
$used_providers{$id} = ["$used_providers{$id}[0]", "$used_providers{$id}[1]", "$used_providers{$id}[2]", "$status", "$used_providers{$id}[4]"];
|
|
|
|
# Write the changed hash to the providers settings file.
|
|
&General::writehasharray($IDS::providers_settings_file, \%used_providers);
|
|
|
|
# Get all enabled providers.
|
|
my @enabled_providers = &IDS::get_enabled_providers();
|
|
|
|
# Write the main providers include file.
|
|
&IDS::write_used_rulefiles_file(@enabled_providers);
|
|
|
|
# Check if oinkmaster has to be executed.
|
|
if ($oinkmaster eq "True") {
|
|
# Launch oinkmaster.
|
|
&oinkmaster_web();
|
|
}
|
|
|
|
# Check if the IDS is running.
|
|
if(&IDS::ids_is_running()) {
|
|
# Gather the amount of enabled providers (elements in the array).
|
|
my $amount = @enabled_providers;
|
|
|
|
# Check if there are still enabled ruleset providers.
|
|
if ($amount >= 1) {
|
|
# Call suricatactrl to perform a restart.
|
|
&IDS::call_suricatactrl("restart");
|
|
|
|
# No active ruleset provider, suricata has to be stopped.
|
|
} else {
|
|
# Stop suricata.
|
|
&IDS::call_suricatactrl("stop");
|
|
}
|
|
}
|
|
|
|
# Undefine providers flag.
|
|
undef($cgiparams{'PROVIDERS'});
|
|
|
|
# Reload page.
|
|
&reload();
|
|
}
|
|
|
|
## Remove provider from the list of used providers.
|
|
#
|
|
} elsif ($cgiparams{'PROVIDERS'} eq $Lang::tr{'remove'}) {
|
|
# Assign a nice human-readable variable.
|
|
my $id = $cgiparams{'ID'};
|
|
|
|
# Grab the provider name bevore deleting.
|
|
my $provider = &get_provider_handle($id);
|
|
|
|
# Remove the provider.
|
|
&remove_provider($id);
|
|
|
|
# Undef the given ID.
|
|
undef($cgiparams{'ID'});
|
|
|
|
# Drop the stored ruleset file.
|
|
&IDS::drop_dl_rulesfile($provider);
|
|
|
|
# Remove may stored etag data.
|
|
&IDS::remove_from_etags($provider);
|
|
|
|
# Get the name of the provider rulessets include file.
|
|
my $provider_used_rulefile = &IDS::get_provider_used_rulesfiles_file($provider);
|
|
|
|
# Drop the file, it is not longer needed.
|
|
unlink("$provider_used_rulefile");
|
|
|
|
# Call function to get the path and name for the given providers
|
|
# ruleset modifications file..
|
|
my $modifications_file = &IDS::get_provider_ruleset_modifications_file($provider);
|
|
|
|
# Check if the file exists.
|
|
if (-f $modifications_file) {
|
|
# Remove the file, which is not longer needed.
|
|
unlink("$modifications_file");
|
|
}
|
|
|
|
# Regenerate ruleset.
|
|
&oinkmaster_web();
|
|
|
|
# Gather all enabled providers.
|
|
my @enabled_providers = &IDS::get_enabled_providers();
|
|
|
|
# Regenerate main providers include file.
|
|
&IDS::write_used_rulefiles_file(@enabled_providers);
|
|
|
|
# Check if the IDS is running.
|
|
if(&IDS::ids_is_running()) {
|
|
# Get amount of enabled providers.
|
|
my $amount = @enabled_providers;
|
|
|
|
# Check if at least one enabled provider remains.
|
|
if ($amount >= 1) {
|
|
# Call suricatactrl to perform a reload.
|
|
&IDS::call_suricatactrl("restart");
|
|
|
|
# Stop suricata if no enabled provider remains.
|
|
} else {
|
|
# Call suricatactrel to perform the stop.
|
|
&IDS::call_suricatactrl("stop");
|
|
}
|
|
}
|
|
|
|
# Undefine providers flag.
|
|
undef($cgiparams{'PROVIDERS'});
|
|
|
|
# Reload page.
|
|
&reload();
|
|
}
|
|
|
|
&Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
|
|
|
|
&Header::openbigbox('100%', 'left', '', $errormessage);
|
|
|
|
&show_display_error_message();
|
|
|
|
if ($cgiparams{'RULESET'} eq "$Lang::tr{'ids customize ruleset'}" ) {
|
|
&show_customize_ruleset();
|
|
} elsif ($cgiparams{'PROVIDERS'} ne "") {
|
|
&show_add_provider();
|
|
} else {
|
|
&show_mainpage();
|
|
}
|
|
|
|
&Header::closebigbox();
|
|
&Header::closepage();
|
|
|
|
#
|
|
## Tiny function to show if a error message happened.
|
|
#
|
|
sub show_display_error_message() {
|
|
if ($errormessage) {
|
|
&Header::openbox('100%', 'left', $Lang::tr{'error messages'});
|
|
print "<class name='base'>$errormessage\n";
|
|
print " </class>\n";
|
|
&Header::closebox();
|
|
}
|
|
}
|
|
|
|
#
|
|
## Function to display the main IDS page.
|
|
#
|
|
sub show_mainpage() {
|
|
# Read-in idssettings and provider settings.
|
|
&General::readhash("$IDS::ids_settings_file", \%idssettings);
|
|
&General::readhasharray("$IDS::providers_settings_file", \%used_providers);
|
|
|
|
# Read-in ignored hosts.
|
|
&General::readhasharray("$IDS::ignored_file", \%ignored) if (-e $IDS::ignored_file);
|
|
|
|
$checked{'ENABLE_IDS'}{'off'} = '';
|
|
$checked{'ENABLE_IDS'}{'on'} = '';
|
|
$checked{'ENABLE_IDS'}{$idssettings{'ENABLE_IDS'}} = "checked='checked'";
|
|
|
|
# Draw current state of the IDS
|
|
&Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'});
|
|
|
|
&Header::ServiceStatus({
|
|
$Lang::tr{'intrusion prevention system'} => {
|
|
"pidfile" => "/var/run/suricata.pid",
|
|
},
|
|
});
|
|
|
|
# Only show this area, if at least one ruleset provider is configured.
|
|
if (%used_providers) {
|
|
|
|
print <<END
|
|
|
|
<br><br><h2>$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'}> $Lang::tr{'ids enable'}
|
|
</td>
|
|
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><br><br></td>
|
|
<td><br><br></td>
|
|
<td><br><br></td>
|
|
<td><br><br></td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td colspan='4'><b>$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") {
|
|
$checked_input = "checked = 'checked'";
|
|
}
|
|
|
|
print "<td class='base' width='20%'>\n";
|
|
print "<input type='checkbox' name='ENABLE_IDS_$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
|
|
</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
|
|
;
|
|
|
|
}
|
|
|
|
&Header::closebox();
|
|
|
|
#
|
|
# Used Ruleset Providers section.
|
|
#
|
|
&Header::openbox('100%', 'center', $Lang::tr{'ids ruleset settings'});
|
|
|
|
print <<END;
|
|
<table width='100%' border='0'>
|
|
<tr>
|
|
<td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'ids provider'}</b></td>
|
|
<td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'date'}</b></td>
|
|
<td class='base' bgcolor='$color{'color20'}' align='center'><b>$Lang::tr{'ids autoupdates'}</b></td>
|
|
<td class='base' bgcolor='$color{'color20'}' align='center'><b>$Lang::tr{'action'}</b></td>
|
|
<td class='base' colspan='3' bgcolor='$color{'color20'}'></td>
|
|
</tr>
|
|
END
|
|
my $line = 1;
|
|
|
|
# Check if some providers has been configured.
|
|
if (keys (%used_providers)) {
|
|
my $col = "";
|
|
|
|
# Loop through all entries of the hash.
|
|
foreach my $id (sort keys(%used_providers)) {
|
|
# Assign data array positions to some nice variable names.
|
|
my $provider = $used_providers{$id}[0];
|
|
my $provider_name = &get_provider_name($provider);
|
|
my $rulesetdate = &IDS::get_ruleset_date($provider);
|
|
|
|
my $subscription_code = $used_providers{$id}[1];
|
|
my $autoupdate_status = $used_providers{$id}[2];
|
|
my $status = $used_providers{$id}[3];
|
|
my $unsupported;
|
|
|
|
# Check if the item number is even or not.
|
|
if ($line % 2) {
|
|
$col="bgcolor='$color{'color22'}'";
|
|
} else {
|
|
$col="bgcolor='$color{'color20'}'";
|
|
}
|
|
|
|
# Handle providers which are not longer supported.
|
|
unless ($IDS::Ruleset::Providers{$provider}{'dl_url'}) {
|
|
$col = "bgcolor='$Header::colouryellow'";
|
|
$unsupported = $Lang::tr{'ids provider eol'};
|
|
}
|
|
|
|
# Choose icons for the checkboxes.
|
|
my $status_gif;
|
|
my $status_gdesc;
|
|
my $autoupdate_status_gif;
|
|
my $autoupdate_status_gdesc;
|
|
|
|
# Check if the status is enabled and select the correct image and description.
|
|
if ($status eq 'enabled' ) {
|
|
$status_gif = 'on.gif';
|
|
$status_gdesc = $Lang::tr{'click to disable'};
|
|
} else {
|
|
$status_gif = 'off.gif';
|
|
$status_gdesc = $Lang::tr{'click to enable'};
|
|
}
|
|
|
|
# Check if the autoupdate status is enabled and select the correct image and description.
|
|
if ($autoupdate_status eq 'enabled') {
|
|
$autoupdate_status_gif = 'on.gif';
|
|
$autoupdate_status_gdesc = $Lang::tr{'click to disable'};
|
|
} else {
|
|
$autoupdate_status_gif = 'off.gif';
|
|
$autoupdate_status_gdesc = $Lang::tr{'click to enable'};
|
|
}
|
|
|
|
print <<END;
|
|
<tr>
|
|
<td width='33%' class='base' $col>$provider_name $unsupported</td>
|
|
<td width='30%' class='base' $col>$rulesetdate</td>
|
|
|
|
<td align='center' $col>
|
|
<form method='post' action='$ENV{'SCRIPT_NAME'}'>
|
|
<input type='hidden' name='AUTOUPDATE' value='$Lang::tr{'toggle enable disable'}' />
|
|
<input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$autoupdate_status_gif' alt='$autoupdate_status_gdesc' title='$autoupdate_status_gdesc' />
|
|
<input type='hidden' name='ID' value='$id' />
|
|
</form>
|
|
</td>
|
|
|
|
<td align='center' $col>
|
|
<form method='post' action='$ENV{'SCRIPT_NAME'}'>
|
|
<input type='hidden' name='PROVIDERS' value='$Lang::tr{'toggle enable disable'}'>
|
|
<input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$status_gif' alt='$status_gdesc' title='$status_gdesc'>
|
|
<input type='hidden' name='ID' value='$id'>
|
|
</form>
|
|
</td>
|
|
|
|
<td align='center' $col>
|
|
<form method='post' action='$ENV{'SCRIPT_NAME'}'>
|
|
<input type='hidden' name='PROVIDERS' 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='$id'>
|
|
</form>
|
|
</td>
|
|
|
|
<td align='center' $col>
|
|
<form method='post' name='$provider' action='$ENV{'SCRIPT_NAME'}'>
|
|
<input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' title='$Lang::tr{'remove'}' alt='$Lang::tr{'remove'}'>
|
|
<input type='hidden' name='ID' value='$id'>
|
|
<input type='hidden' name='PROVIDERS' value='$Lang::tr{'remove'}'>
|
|
</form>
|
|
</td>
|
|
</tr>
|
|
END
|
|
# Increment lines value.
|
|
$line++;
|
|
|
|
}
|
|
|
|
} else {
|
|
# Print notice that currently no hosts are ignored.
|
|
print "<tr>\n";
|
|
print "<td class='base' colspan='2'>$Lang::tr{'guardian no entries'}</td>\n";
|
|
print "</tr>\n";
|
|
}
|
|
|
|
print "</table>\n";
|
|
|
|
# Section to add new elements or edit existing ones.
|
|
print <<END;
|
|
<br>
|
|
<hr>
|
|
<br>
|
|
|
|
<form method='post' action='$ENV{'SCRIPT_NAME'}'>
|
|
<div align='right'>
|
|
END
|
|
|
|
# Only show this button if a ruleset provider is configured.
|
|
if (%used_providers) {
|
|
print "<input type='submit' name='RULESET' value='$Lang::tr{'ids customize ruleset'}'>\n";
|
|
}
|
|
|
|
print <<END;
|
|
<input type='submit' name='PROVIDERS' value='$Lang::tr{'ids add provider'}'>
|
|
</div>
|
|
</form>
|
|
END
|
|
|
|
&Header::closebox();
|
|
|
|
#
|
|
# Whitelist / Ignorelist
|
|
#
|
|
&Header::openbox('100%', 'center', $Lang::tr{'ids ignored hosts'});
|
|
|
|
print <<END;
|
|
<table width='100%'>
|
|
<tr>
|
|
<td class='base' bgcolor='$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'}'";
|
|
}
|
|
|
|
# Choose icon for the checkbox.
|
|
my $gif;
|
|
my $gdesc;
|
|
|
|
# Check if the status is enabled and select the correct image and description.
|
|
if ($status eq 'enabled' ) {
|
|
$gif = 'on.gif';
|
|
$gdesc = $Lang::tr{'click to disable'};
|
|
} else {
|
|
$gif = 'off.gif';
|
|
$gdesc = $Lang::tr{'click to enable'};
|
|
}
|
|
|
|
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";
|
|
}
|
|
|
|
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";
|
|
}
|
|
|
|
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='$buttontext' /></td>
|
|
</tr>
|
|
</form>
|
|
</table>
|
|
</div>
|
|
END
|
|
|
|
&Header::closebox();
|
|
}
|
|
|
|
#
|
|
## Function to show the customize ruleset section.
|
|
#
|
|
sub show_customize_ruleset() {
|
|
### Java Script ###
|
|
print"<script>\n";
|
|
|
|
# Java script variable declaration for show and hide.
|
|
print"var show = \"$Lang::tr{'ids show'}\"\;\n";
|
|
print"var hide = \"$Lang::tr{'ids hide'}\"\;\n";
|
|
|
|
print <<END
|
|
// Tiny javascript function to show/hide the rules
|
|
// of a given category.
|
|
function showhide(tblname) {
|
|
\$("#" + tblname).toggle();
|
|
|
|
// Get current content of the span element.
|
|
var content = document.getElementById("span_" + tblname);
|
|
|
|
if (content.innerHTML === show) {
|
|
content.innerHTML = hide;
|
|
} else {
|
|
content.innerHTML = show;
|
|
}
|
|
}
|
|
</script>
|
|
END
|
|
;
|
|
&Header::openbox('100%', 'LEFT', "$Lang::tr{'intrusion detection system rules'}" );
|
|
print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n";
|
|
|
|
# Output display table for rule files
|
|
print "<table width='100%'>\n";
|
|
|
|
# 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 $lines;
|
|
my $rows;
|
|
my $col;
|
|
|
|
# New table for the single rules.
|
|
print "<table width='100%'>\n";
|
|
|
|
# Loop over rule file rules
|
|
foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) {
|
|
# Local vars
|
|
my $ruledefchecked = '';
|
|
|
|
# Skip rulefile itself.
|
|
next if ($sid eq "Rulefile");
|
|
|
|
# If 2 rules have been displayed, start a new row
|
|
if (($lines % 2) == 0) {
|
|
print "</tr><tr>\n";
|
|
|
|
# Increase rows by once.
|
|
$rows++;
|
|
}
|
|
|
|
# Colour lines.
|
|
if ($rows % 2) {
|
|
$col="bgcolor='$color{'color20'}'";
|
|
} else {
|
|
$col="bgcolor='$color{'color22'}'";
|
|
}
|
|
|
|
# Set rule state
|
|
if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') {
|
|
$ruledefchecked = 'CHECKED';
|
|
}
|
|
|
|
# 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>";
|
|
|
|
# Increment rule count
|
|
$lines++;
|
|
}
|
|
|
|
# If do not have a second rule for row, create empty cell
|
|
if (($lines % 2) != 0) {
|
|
print "<td class='base'></td>";
|
|
}
|
|
|
|
# Close display table
|
|
print "</tr></table></td></tr>";
|
|
}
|
|
|
|
# Close display table
|
|
print "</table>";
|
|
|
|
print <<END
|
|
<table width='100%'>
|
|
<tr>
|
|
<td width='100%' align='right'>
|
|
<input type='submit' value='$Lang::tr{'fwhost back'}'>
|
|
<input type='submit' name='RULESET' value='$Lang::tr{'ids apply'}'>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</form>
|
|
END
|
|
;
|
|
&Header::closebox();
|
|
}
|
|
|
|
#
|
|
## Function to show section for add/edit a provider.
|
|
#
|
|
sub show_add_provider() {
|
|
my %used_providers = ();
|
|
my @subscription_providers;
|
|
|
|
# Read -in providers settings file.
|
|
&General::readhasharray("$IDS::providers_settings_file", \%used_providers);
|
|
|
|
# Get all supported ruleset providers.
|
|
my @ruleset_providers = &IDS::get_ruleset_providers();
|
|
|
|
### Java Script ###
|
|
print "<script>\n";
|
|
|
|
# Generate Java Script Object which contains the URL of the providers.
|
|
print "\t// Object, which contains the webpages of the ruleset providers.\n";
|
|
print "\tvar url = {\n";
|
|
|
|
# Loop through the array of supported providers.
|
|
foreach my $provider (@ruleset_providers) {
|
|
# Check if the provider requires a subscription.
|
|
if ($IDS::Ruleset::Providers{$provider}{'requires_subscription'} eq "True") {
|
|
# Add the provider to the array of subscription_providers.
|
|
push(@subscription_providers, $provider);
|
|
}
|
|
|
|
# Grab the URL for the provider.
|
|
my $url = $IDS::Ruleset::Providers{$provider}{'website'};
|
|
|
|
# Print the URL to the Java Script Object.
|
|
print "\t\t$provider: \"$url\"\,\n";
|
|
}
|
|
|
|
# Close the Java Script Object declaration.
|
|
print "\t}\;\n\n";
|
|
|
|
# Generate Java Script Array which contains the provider that requires a subscription.
|
|
my $line = "";
|
|
$line = join("', '", @subscription_providers);
|
|
|
|
print "\t// Array which contains the providers that requires a subscription.\n";
|
|
print "\tsubscription_provider = ['$line']\;\n\n";
|
|
|
|
print <<END
|
|
// Java Script function to swap the text input field for
|
|
// entering a subscription code.
|
|
var update_provider = function() {
|
|
if(inArray(\$('#PROVIDER').val(), subscription_provider)) {
|
|
\$('.subscription_code').show();
|
|
} else {
|
|
\$('.subscription_code').hide();
|
|
}
|
|
|
|
// Call function to change the website url.
|
|
change_url(\$('#PROVIDER').val());
|
|
};
|
|
|
|
// Java Script function to check if a given value is part of
|
|
// an array.
|
|
function inArray(value,array) {
|
|
var count=array.length;
|
|
|
|
for(var i=0;i<count;i++) {
|
|
if(array[i]===value){
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// Tiny function to change the website url based on the selected element in the "PROVIDERS"
|
|
// dropdown menu.
|
|
function change_url(provider) {
|
|
// Get and change the href to the corresponding url.
|
|
document.getElementById("website").href = url[provider];
|
|
}
|
|
|
|
// JQuery function to call corresponding function when
|
|
// the ruleset provider is changed or the page is loaded for showing/hiding
|
|
// the subscription_code area.
|
|
\$(document).ready(function() {
|
|
\$('#PROVIDER').change(update_provider);
|
|
update_provider();
|
|
});
|
|
|
|
</script>
|
|
END
|
|
;
|
|
|
|
# Check if an existing provider should be edited.
|
|
if($cgiparams{'PROVIDERS'} eq "$Lang::tr{'edit'}") {
|
|
# Check if autoupdate is enabled for this provider.
|
|
if ($used_providers{$cgiparams{'ID'}}[2] eq "enabled") {
|
|
# Set the checkbox to be checked.
|
|
$checked{'ENABLE_AUTOUPDATE'} = "checked='checked'";
|
|
}
|
|
|
|
# Check if the monitor traffic only mode is set for this provider.
|
|
if ($used_providers{$cgiparams{'ID'}}[4] eq "IDS") {
|
|
# Set the checkbox to be checked.
|
|
$checked{'MONITOR_TRAFFIC_ONLY'} = "checked='checked'";
|
|
}
|
|
|
|
# Display section to force an rules update and to reset the provider.
|
|
&show_additional_provider_actions();
|
|
|
|
} elsif ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'ids add provider'}") {
|
|
# Set the autoupdate to true as default.
|
|
$checked{'ENABLE_AUTOUPDATE'} = "checked='checked'";
|
|
}
|
|
|
|
&Header::openbox('100%', 'center', $Lang::tr{'ids provider settings'});
|
|
|
|
print <<END
|
|
<form method='post' action='$ENV{'SCRIPT_NAME'}'>
|
|
<table width='100%' border='0'>
|
|
<tr>
|
|
<td colspan='2'><b>$Lang::tr{'ids provider'}</b></td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td width='40%'>
|
|
<input type='hidden' name='ID' value='$cgiparams{'ID'}'>
|
|
END
|
|
;
|
|
# Value to allow disabling the dropdown menu.
|
|
my $disabled;
|
|
|
|
# Check if we are in edit mode.
|
|
if ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'edit'}") {
|
|
$disabled = "disabled";
|
|
|
|
# Add hidden input with the provider because the disable select does not provider
|
|
# this.
|
|
print "<input type='hidden' name='PROVIDER' value='$used_providers{$cgiparams{'ID'}}[0]'>\n";
|
|
}
|
|
|
|
print "<select name='PROVIDER' id='PROVIDER' $disabled>\n";
|
|
# Temporary hash to store the provier names and their handles.
|
|
my %tmphash = ();
|
|
|
|
# Loop through the array of ruleset providers.
|
|
foreach my $handle (@ruleset_providers) {
|
|
# Get the provider name.
|
|
my $name = &get_provider_name($handle);
|
|
|
|
# Add the grabbed provider name and handle to the
|
|
# temporary hash.
|
|
$tmphash{$name} = "$handle";
|
|
}
|
|
|
|
# Sort and loop through the temporary hash.
|
|
foreach my $provider_name ( sort keys %tmphash ) {
|
|
# Grab the provider handle.
|
|
my $provider = $tmphash{$provider_name};
|
|
|
|
# Check if we are not in edit mode.
|
|
if ($cgiparams{'PROVIDERS'} ne "$Lang::tr{'edit'}") {
|
|
# Skip unsupported ruleset provider.
|
|
next unless(exists($IDS::Ruleset::Providers{$provider}{"dl_url"}));
|
|
}
|
|
|
|
# Pre-select the provider if one is given.
|
|
if (($used_providers{$cgiparams{'ID'}}[0] eq "$provider") || ($cgiparams{'PROVIDER'} eq "$provider")) {
|
|
$selected{$provider} = "selected='selected'";
|
|
}
|
|
|
|
# Add the provider to the dropdown menu.
|
|
print "<option value='$provider' $selected{$provider}>$provider_name</option>\n";
|
|
}
|
|
print <<END
|
|
</select>
|
|
</td>
|
|
|
|
<td width='60%'>
|
|
<b><a id="website" target="_blank" href="#">$Lang::tr{'ids visit provider website'}</a></b>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td colspan='2'><br><br></td>
|
|
</tr>
|
|
|
|
<tr class='subscription_code' style='display:none' id='subscription_code'>
|
|
<td colspan='2'>
|
|
<table border='0'>
|
|
<tr>
|
|
<td>
|
|
<b>$Lang::tr{'subscription code'}</b>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>
|
|
<input type='text' size='40' name='SUBSCRIPTION_CODE' value='$used_providers{$cgiparams{'ID'}}[1]'>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td><br><br></td>
|
|
</tr>
|
|
</table>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>
|
|
<input type='checkbox' name='ENABLE_AUTOUPDATE' $checked{'ENABLE_AUTOUPDATE'}> $Lang::tr{'ids enable automatic updates'}
|
|
</td>
|
|
|
|
<td>
|
|
<input type='checkbox' name='MONITOR_TRAFFIC_ONLY' $checked{'MONITOR_TRAFFIC_ONLY'}> $Lang::tr{'ids monitor traffic only'}
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td colspan='2' align='right'>
|
|
<input type='submit' value='$Lang::tr{'back'}'>
|
|
END
|
|
;
|
|
# Check if a provider should be added or edited.
|
|
if ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'edit'}") {
|
|
# Display button for updating the existing provider.
|
|
print "<input type='submit' name='PROVIDERS' value='$Lang::tr{'update'}'>\n";
|
|
} else {
|
|
# Display button to add the new provider.
|
|
print "<input type='submit' name='PROVIDERS' value='$Lang::tr{'add'}'>\n";
|
|
}
|
|
print <<END
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</form>
|
|
END
|
|
;
|
|
&Header::closebox();
|
|
}
|
|
|
|
#
|
|
## Function to show the area where additional provider actions can be done.
|
|
#
|
|
sub show_additional_provider_actions() {
|
|
my $disabled_reset;
|
|
my $disabled_update;
|
|
my %used_providers = ();
|
|
|
|
# Read-in providers settings file.
|
|
&General::readhasharray("$IDS::providers_settings_file", \%used_providers);
|
|
|
|
# Assign variable for provider handle.
|
|
my $provider = "$used_providers{$cgiparams{'ID'}}[0]";
|
|
|
|
# Call function to get the path and name for the given provider
|
|
# ruleset modifications file.
|
|
my $modifications_file = &IDS::get_provider_ruleset_modifications_file($provider);
|
|
|
|
# Disable the reset provider button if no provider modified sids file exists.
|
|
unless (-f $modifications_file) {
|
|
$disabled_reset = "disabled";
|
|
}
|
|
|
|
# Disable the manual update button if the provider is not longer supported.
|
|
unless ($IDS::Ruleset::Providers{$provider}{"dl_url"}) {
|
|
$disabled_update = "disabled";
|
|
}
|
|
|
|
&Header::openbox('100%', 'center', "");
|
|
print <<END
|
|
<form method='post' action='$ENV{'SCRIPT_NAME'}'>
|
|
<table width='100%' border="0">
|
|
<tr>
|
|
<td align='center'>
|
|
<input type='hidden' name='PROVIDER' value='$provider'>
|
|
<input type='submit' name='PROVIDERS' value='$Lang::tr{'ids reset provider'}' $disabled_reset>
|
|
<input type='submit' name='PROVIDERS' value='$Lang::tr{'ids force ruleset update'}' $disabled_update>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</form>
|
|
END
|
|
;
|
|
&Header::closebox();
|
|
}
|
|
|
|
#
|
|
## A function to display a notice, to lock the webpage and
|
|
## tell the user which action currently will be performed.
|
|
#
|
|
sub working_notice ($) {
|
|
my ($message) = @_;
|
|
|
|
&_open_working_notice ($message);
|
|
&_close_working_notice();
|
|
}
|
|
|
|
#
|
|
## Private function to lock the page and tell the user what is going on.
|
|
#
|
|
sub _open_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>$message</td>
|
|
</tr>
|
|
END
|
|
}
|
|
|
|
#
|
|
## Private function to close a working notice.
|
|
#
|
|
sub _close_working_notice () {
|
|
print "</table>\n";
|
|
|
|
&Header::closebox();
|
|
&Header::closebigbox();
|
|
&Header::closepage();
|
|
}
|
|
|
|
#
|
|
## Function which locks the webpage and basically does the same as the
|
|
## oinkmaster function, but provides a lot of HTML formated status output.
|
|
#
|
|
sub oinkmaster_web () {
|
|
my ($nolock) = @_;
|
|
|
|
my @enabled_providers = &IDS::get_enabled_providers();
|
|
|
|
# Lock the webpage and print message.
|
|
unless ($nolock) {
|
|
&_open_working_notice("$Lang::tr{'ids apply ruleset changes'}");
|
|
}
|
|
|
|
# Check if the files in rulesdir have the correct permissions.
|
|
&IDS::_check_rulesdir_permissions();
|
|
|
|
print "<tr><td><br><br></td></tr>\n";
|
|
|
|
# Cleanup the rules directory before filling it with the new rulests.
|
|
&_add_to_notice("$Lang::tr{'ids remove rule structures'}");
|
|
&IDS::_cleanup_rulesdir();
|
|
|
|
# Loop through the array of enabled providers.
|
|
foreach my $provider (@enabled_providers) {
|
|
&_add_to_notice("$Lang::tr{'ids extract ruleset'} $provider");
|
|
# Call the extractruleset function.
|
|
&IDS::extractruleset($provider);
|
|
}
|
|
|
|
# Call function to process the ruleset and do all modifications.
|
|
&_add_to_notice("$Lang::tr{'ids adjust ruleset'}");
|
|
&IDS::process_ruleset(@enabled_providers);
|
|
|
|
# Call function to merge the classification files.
|
|
&_add_to_notice("$Lang::tr{'ids merge classifications'}");
|
|
&IDS::merge_classifications(@enabled_providers);
|
|
|
|
# Call function to merge the sid to message mapping files.
|
|
&_add_to_notice("$Lang::tr{'ids merge sid files'}");
|
|
&IDS::merge_sid_msg(@enabled_providers);
|
|
|
|
# Cleanup temporary directory.
|
|
&_add_to_notice("$Lang::tr{'ids cleanup tmp dir'}");
|
|
&IDS::cleanup_tmp_directory();
|
|
|
|
# Finished - print a notice.
|
|
&_add_to_notice("$Lang::tr{'ids finished'}");
|
|
|
|
# Close the working notice.
|
|
unless ($nolock) {
|
|
&_close_working_notice();
|
|
}
|
|
}
|
|
|
|
#
|
|
## Tiny private function to add a given message to a notice table.
|
|
#
|
|
sub _add_to_notice ($) {
|
|
my ($message) = @_;
|
|
|
|
print "<tr><td colspan='2'><li><b>$message</b></li></td></tr>\n";
|
|
}
|
|
|
|
#
|
|
## A tiny function to perform a reload of the webpage after one second.
|
|
#
|
|
sub reload () {
|
|
print "<meta http-equiv='refresh' content='1'>\n";
|
|
|
|
# Stop the script.
|
|
exit;
|
|
}
|
|
|
|
#
|
|
## Private function to read-in and parse rules of a given rulefile.
|
|
#
|
|
## The given file will be read, parsed and all valid rules will be stored by ID,
|
|
## message/description and it's state in the idsrules hash.
|
|
#
|
|
sub readrulesfile ($) {
|
|
my $rulefile = shift;
|
|
|
|
# Open rule file and read in contents
|
|
open(RULEFILE, "$IDS::rulespath/$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:\s*\"(.*?)\"\;.*sid:\s*(.*?); /) {
|
|
$msg = $1;
|
|
$sid = $2;
|
|
|
|
# Check if a rule has been found.
|
|
if ($sid && $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.
|
|
$idsrules{$rulefile}{$sid}{'State'} = "off";
|
|
} else {
|
|
# Otherwise the rule is enabled.
|
|
$idsrules{$rulefile}{$sid}{'State'} = "on";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#
|
|
## Function to get the provider handle by a given ID.
|
|
#
|
|
sub get_provider_handle($) {
|
|
my ($id) = @_;
|
|
|
|
my %used_providers = ();
|
|
|
|
# Read-in provider settings file.
|
|
&General::readhasharray($IDS::providers_settings_file, \%used_providers);
|
|
|
|
# Obtain the provider handle for the given ID.
|
|
my $provider_handle = $used_providers{$cgiparams{'ID'}}[0];
|
|
|
|
# Return the handle.
|
|
return $provider_handle;
|
|
}
|
|
|
|
#
|
|
## Function to get the provider name from the language file or providers file for a given handle.
|
|
#
|
|
sub get_provider_name($) {
|
|
my ($handle) = @_;
|
|
my $provider_name;
|
|
|
|
# Early exit if the given provider does not longer exist.
|
|
return unless ($IDS::Ruleset::Providers{$handle});
|
|
|
|
# Get the required translation string for the given provider handle.
|
|
my $tr_string = $IDS::Ruleset::Providers{$handle}{'tr_string'};
|
|
|
|
# Check if the translation string is available in the language files.
|
|
if ($Lang::tr{$tr_string}) {
|
|
# Use the translated string from the language file.
|
|
$provider_name = $Lang::tr{$tr_string};
|
|
} else {
|
|
# Fallback and use the provider summary from the providers file.
|
|
$provider_name = $IDS::Ruleset::Providers{$handle}{'summary'};
|
|
}
|
|
|
|
# Return the obtained provider name.
|
|
return $provider_name;
|
|
}
|
|
|
|
#
|
|
## Function to remove a provider by a given ID.
|
|
#
|
|
sub remove_provider($) {
|
|
my ($id) = @_;
|
|
|
|
my %used_providers = ();
|
|
|
|
# Read-in provider settings file.
|
|
&General::readhasharray($IDS::providers_settings_file, \%used_providers);
|
|
|
|
# Drop entry from the hash.
|
|
delete($used_providers{$id});
|
|
|
|
# Write the changed hash to the provider settings file.
|
|
&General::writehasharray($IDS::providers_settings_file, \%used_providers);
|
|
}
|
|
|
|
#
|
|
## Private function to convert a given rulefile to a category name.
|
|
## ( No file extension anymore and if the name contained a dot, it
|
|
## would be replaced by a underline sign.)
|
|
#
|
|
sub _rulefile_to_category($) {
|
|
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;
|
|
}
|