2 ###############################################################################
4 # IPFire.org - A linux based firewall #
5 # Copyright (C) 2007-2020 IPFire Team <info@ipfire.org> #
7 # This program is free software: you can redistribute it and/or modify #
8 # it under the terms of the GNU General Public License as published by #
9 # the Free Software Foundation, either version 3 of the License, or #
10 # (at your option) any later version. #
12 # This program is distributed in the hope that it will be useful, #
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of #
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
15 # GNU General Public License for more details. #
17 # You should have received a copy of the GNU General Public License #
18 # along with this program. If not, see <http://www.gnu.org/licenses/>. #
20 ###############################################################################
24 # enable only the following on debugging purpose
26 #use CGI::Carp 'fatalsToBrowser';
28 require '/var/ipfire/general-functions.pl';
29 require "${General::swroot}/lang.pl";
30 require "${General::swroot}/header.pl";
31 require "${General::swroot}/ids-functions.pl";
32 require "${General::swroot}/network-functions.pl";
34 # Import ruleset providers file.
35 require "$IDS::rulesetsourcesfile";
38 my %mainsettings = ();
41 my %used_providers=();
47 # Read-in main settings, for language, theme and colors.
48 &General
::readhash
("${General::swroot}/main/settings", \
%mainsettings);
49 &General
::readhash
("/srv/web/ipfire/html/themes/ipfire/include/colors.txt", \
%color);
51 # Get the available network zones, based on the config type of the system and store
52 # the list of zones in an array.
53 my @network_zones = &Network
::get_available_network_zones
();
55 # Check if openvpn is started and add it to the array of network zones.
56 if ( -e
"/var/run/openvpn.pid") {
57 push(@network_zones, "ovpn");
62 # Create files if they does not exist yet.
63 &IDS
::check_and_create_filelayout
();
65 # Hash which contains the colour code of a network zone.
67 'red' => $Header::colourred
,
68 'green' => $Header::colourgreen
,
69 'blue' => $Header::colourblue
,
70 'orange' => $Header::colourorange
,
71 'ovpn' => $Header::colourovpn
74 &Header
::showhttpheaders
();
77 &Header
::getcgihash
(\
%cgiparams);
79 ## Add/edit an entry to the ignore file.
81 if (($cgiparams{'WHITELIST'} eq $Lang::tr
{'add'}) || ($cgiparams{'WHITELIST'} eq $Lang::tr
{'update'})) {
83 # Check if any input has been performed.
84 if ($cgiparams{'IGNORE_ENTRY_ADDRESS'} ne '') {
86 # Check if the given input is no valid IP-address or IP-address with subnet, display an error message.
87 if ((!&General
::validip
($cgiparams{'IGNORE_ENTRY_ADDRESS'})) && (!&General
::validipandmask
($cgiparams{'IGNORE_ENTRY_ADDRESS'}))) {
88 $errormessage = "$Lang::tr{'guardian invalid address or subnet'}";
91 $errormessage = "$Lang::tr{'guardian empty input'}";
94 # Go further if there was no error.
95 if ($errormessage eq '') {
100 # Assign hash values.
101 my $new_entry_address = $cgiparams{'IGNORE_ENTRY_ADDRESS'};
102 my $new_entry_remark = $cgiparams{'IGNORE_ENTRY_REMARK'};
104 # Read-in ignoredfile.
105 &General
::readhasharray
($IDS::ignored_file
, \
%ignored);
107 # Check if we should edit an existing entry and got an ID.
108 if (($cgiparams{'WHITELIST'} eq $Lang::tr
{'update'}) && ($cgiparams{'ID'})) {
109 # Assin the provided id.
110 $id = $cgiparams{'ID'};
112 # Undef the given ID.
113 undef($cgiparams{'ID'});
115 # Grab the configured status of the corresponding entry.
116 $status = $ignored{$id}[2];
118 # Each newly added entry automatically should be enabled.
121 # Generate the ID for the new entry.
123 # Sort the keys by their ID and store them in an array.
124 my @keys = sort { $a <=> $b } keys %ignored;
126 # Reverse the key array.
127 my @reversed = reverse(@keys);
129 # Obtain the last used id.
130 my $last_id = @reversed[0];
132 # Increase the last id by one and use it as id for the new entry.
136 # Add/Modify the entry to/in the ignored hash.
137 $ignored{$id} = ["$new_entry_address", "$new_entry_remark", "$status"];
139 # Write the changed ignored hash to the ignored file.
140 &General
::writehasharray
($IDS::ignored_file
, \
%ignored);
142 # Regenerate the ignore file.
143 &IDS
::generate_ignore_file
();
146 # Check if the IDS is running.
147 if(&IDS
::ids_is_running
()) {
148 # Call suricatactrl to perform a reload.
149 &IDS
::call_suricatactrl
("reload");
152 ## Toggle Enabled/Disabled for an existing entry on the ignore list.
155 } elsif ($cgiparams{'WHITELIST'} eq $Lang::tr
{'toggle enable disable'}) {
158 # Only go further, if an ID has been passed.
159 if ($cgiparams{'ID'}) {
160 # Assign the given ID.
161 my $id = $cgiparams{'ID'};
163 # Undef the given ID.
164 undef($cgiparams{'ID'});
166 # Read-in ignoredfile.
167 &General
::readhasharray
($IDS::ignored_file
, \
%ignored);
169 # Grab the configured status of the corresponding entry.
170 my $status = $ignored{$id}[2];
173 if ($status eq "disabled") {
176 $status = "disabled";
179 # Modify the status of the existing entry.
180 $ignored{$id} = ["$ignored{$id}[0]", "$ignored{$id}[1]", "$status"];
182 # Write the changed ignored hash to the ignored file.
183 &General
::writehasharray
($IDS::ignored_file
, \
%ignored);
185 # Regenerate the ignore file.
186 &IDS
::generate_ignore_file
();
188 # Check if the IDS is running.
189 if(&IDS
::ids_is_running
()) {
190 # Call suricatactrl to perform a reload.
191 &IDS
::call_suricatactrl
("reload");
195 ## Remove entry from ignore list.
197 } elsif ($cgiparams{'WHITELIST'} eq $Lang::tr
{'remove'}) {
200 # Read-in ignoredfile.
201 &General
::readhasharray
($IDS::ignored_file
, \
%ignored);
203 # Drop entry from the hash.
204 delete($ignored{$cgiparams{'ID'}});
206 # Undef the given ID.
207 undef($cgiparams{'ID'});
209 # Write the changed ignored hash to the ignored file.
210 &General
::writehasharray
($IDS::ignored_file
, \
%ignored);
212 # Regenerate the ignore file.
213 &IDS
::generate_ignore_file
();
215 # Check if the IDS is running.
216 if(&IDS
::ids_is_running
()) {
217 # Call suricatactrl to perform a reload.
218 &IDS
::call_suricatactrl
("reload");
222 # Check if the page is locked, in this case, the ids_page_lock_file exists.
223 if (-e
$IDS::ids_page_lock_file
) {
224 # Lock the webpage and print notice about autoupgrade of the ruleset
226 &working_notice
("$Lang::tr{'ids ruleset autoupdate in progress'}");
228 # Loop and check if the file still exists.
229 while(-e
$IDS::ids_page_lock_file
) {
230 # Sleep for a second and re-check.
234 # Page has been unlocked, perform a reload.
238 # Check if any error has been stored.
239 if (-e
$IDS::storederrorfile
) {
240 # Open file to read in the stored error message.
241 open(FILE
, "<$IDS::storederrorfile") or die "Could not open $IDS::storederrorfile. $!\n";
243 # Read the stored error message.
244 $errormessage = <FILE
>;
249 # Delete the file, which is now not longer required.
250 unlink($IDS::storederrorfile
);
253 # Gather ruleset details.
254 if ($cgiparams{'RULESET'}) {
255 ## Grab all available rules and store them in the idsrules hash.
258 # Get enabled providers.
259 my @enabled_providers = &IDS
::get_enabled_providers
();
261 # Open rules directory and do a directory listing.
262 opendir(DIR
, $IDS::rulespath
) or die $!;
263 # Loop through the direcory.
264 while (my $file = readdir(DIR
)) {
266 # We only want files.
267 next unless (-f
"$IDS::rulespath/$file");
269 # Ignore empty files.
270 next if (-z
"$IDS::rulespath/$file");
272 # Use a regular expression to find files ending in .rules
273 next unless ($file =~ m/\.rules$/);
275 # Ignore files which are not read-able.
276 next unless (-R
"$IDS::rulespath/$file");
278 # Skip whitelist rules file.
279 next if( $file eq "whitelist.rules");
281 # Splitt vendor from filename.
282 my @filename_parts = split(/-/, $file);
284 # Assign vendor name for easy processing.
285 my $vendor = @filename_parts[0];
287 # Skip rulefile if the provider is disabled.
288 next unless ($vendor ~~ @enabled_providers);
290 # Call subfunction to read-in rulefile and add rules to
292 &readrulesfile
("$file");
297 # Loop through the array of used providers.
298 foreach my $provider (@enabled_providers) {
299 # Gather used rulefiles.
300 my @used_rulesfiles = &IDS
::read_used_provider_rulesfiles
($provider);
302 # Loop through the array of used rulesfiles.
303 foreach my $rulefile (@used_rulesfiles) {
304 # Check if the current rulefile exists in the %idsrules hash.
305 # If not, the file probably does not exist anymore or contains
307 if($idsrules{$rulefile}) {
308 # Add the rulefile state to the %idsrules hash.
309 $idsrules{$rulefile}{'Rulefile'}{'State'} = "on";
316 if ($cgiparams{'RULESET'} eq $Lang::tr
{'ids apply'}) {
317 # Arrays to store which rulefiles have been enabled and will be used.
318 my @enabled_rulefiles;
320 # Hash to store the user-enabled and disabled sids.
321 my %enabled_disabled_sids;
323 # Store if a restart of suricata is required.
324 my $suricata_restart_required;
326 # Loop through the hash of idsrules.
327 foreach my $rulefile(keys %idsrules) {
328 # Check if the state of the rulefile has been changed.
329 unless ($cgiparams{$rulefile} eq $idsrules{$rulefile}{'Rulefile'}{'State'}) {
330 # A restart of suricata is required to apply the changes of the used rulefiles.
331 $suricata_restart_required = 1;
334 # Check if the rulefile is enabled.
335 if ($cgiparams{$rulefile} eq "on") {
336 # Add rulefile to the array of enabled rulefiles.
337 push(@enabled_rulefiles, $rulefile);
339 # Drop item from cgiparams hash.
340 delete $cgiparams{$rulefile};
344 # Read-in the files for enabled/disabled sids.
345 # This will be done by calling the read_enabled_disabled_sids_file function two times
346 # and merge the returned hashes together into the enabled_disabled_sids hash.
347 %enabled_disabled_sids = (
348 &read_enabled_disabled_sids_file
($IDS::disabled_sids_file
),
349 &read_enabled_disabled_sids_file
($IDS::enabled_sids_file
));
351 # Loop through the hash of idsrules.
352 foreach my $rulefile (keys %idsrules) {
353 # Loop through the single rules of the rulefile.
354 foreach my $sid (keys %{$idsrules{$rulefile}}) {
355 # Skip the current sid if it is not numeric.
356 next unless ($sid =~ /\d+/ );
358 # Check if there exists a key in the cgiparams hash for this sid.
359 if (exists($cgiparams{$sid})) {
360 # Look if the rule is disabled.
361 if ($idsrules{$rulefile}{$sid}{'State'} eq "off") {
362 # Check if the state has been set to 'on'.
363 if ($cgiparams{$sid} eq "on") {
364 # Add/Modify the sid to/in the enabled_disabled_sids hash.
365 $enabled_disabled_sids{$sid} = "enabled";
367 # Drop item from cgiparams hash.
368 delete $cgiparams{$rulefile}{$sid};
372 # Look if the rule is enabled.
373 if ($idsrules{$rulefile}{$sid}{'State'} eq "on") {
374 # Check if the state is 'on' and should be disabled.
375 # In this case there is no entry
376 # for the sid in the cgiparams hash.
377 # Add/Modify it to/in the enabled_disabled_sids hash.
378 $enabled_disabled_sids{$sid} = "disabled";
380 # Drop item from cgiparams hash.
381 delete $cgiparams{$rulefile}{$sid};
387 # Open enabled sid's file for writing.
388 open(ENABLED_FILE
, ">$IDS::enabled_sids_file") or die "Could not write to $IDS::enabled_sids_file. $!\n";
390 # Open disabled sid's file for writing.
391 open(DISABLED_FILE
, ">$IDS::disabled_sids_file") or die "Could not write to $IDS::disabled_sids_file. $!\n";
393 # Write header to the files.
394 print ENABLED_FILE
"#Autogenerated file. Any custom changes will be overwritten!\n";
395 print DISABLED_FILE
"#Autogenerated file. Any custom changes will be overwritten!\n";
397 # Check if the hash for enabled/disabled files contains any entries.
398 if (%enabled_disabled_sids) {
399 # Loop through the hash.
400 foreach my $sid (keys %enabled_disabled_sids) {
401 # Check if the sid is enabled.
402 if ($enabled_disabled_sids{$sid} eq "enabled") {
403 # Print the sid to the enabled_sids file.
404 print ENABLED_FILE
"enablesid $sid\n";
405 # Check if the sid is disabled.
406 } elsif ($enabled_disabled_sids{$sid} eq "disabled") {
407 # Print the sid to the disabled_sids file.
408 print DISABLED_FILE
"disablesid $sid\n";
409 # Something strange happende - skip the current sid.
416 # Close file for enabled_sids after writing.
419 # Close file for disabled_sids after writing.
420 close(DISABLED_FILE
);
422 # Handle enabled / disabled rulefiles.
424 # Get enabled providers.
425 my @enabled_providers = &IDS
::get_enabled_providers
();
427 # Loop through the array of enabled providers.
428 foreach my $provider(@enabled_providers) {
429 # Array to store the rulefiles which belong to the current processed provider.
430 my @provider_rulefiles = ();
432 # Loop through the array of enabled rulefiles.
433 foreach my $rulesfile (@enabled_rulefiles) {
434 # Split the rulefile name.
435 my @filename_parts = split(/-/, "$rulesfile");
437 # Assign vendor name for easy processings.
438 my $vendor = @filename_parts[0];
440 # Check if the rulesvendor is our current processed enabled provider.
441 if ("$vendor" eq "$provider") {
442 # Add the rulesfile to the array of provider rulesfiles.
443 push(@provider_rulefiles, $rulesfile);
446 # Check if any rulesfiles have been found for this provider.
447 if (@provider_rulefiles) {
448 # Call function and write the providers used rulesfile file.
449 &IDS
::write_used_provider_rulefiles_file
($provider, @provider_rulefiles);
454 # Call function to generate and write the used rulefiles file.
455 &IDS
::write_main_used_rulefiles_file
(@enabled_providers);
457 # Lock the webpage and print message.
458 &working_notice
("$Lang::tr{'ids apply ruleset changes'}");
460 # Call oinkmaster to alter the ruleset.
463 # Check if the IDS is running.
464 if(&IDS
::ids_is_running
()) {
465 # Check if a restart of suricata is required.
466 if ($suricata_restart_required) {
467 # Call suricatactrl to perform the restart.
468 &IDS
::call_suricatactrl
("restart");
470 # Call suricatactrl to perform a reload.
471 &IDS
::call_suricatactrl
("reload");
478 # Download new ruleset.
479 } elsif ($cgiparams{'RULESET'} eq $Lang::tr
{'update ruleset'}) {
480 # Check if the red device is active.
481 unless (-e
"${General::swroot}/red/active") {
482 $errormessage = "$Lang::tr{'could not download latest updates'} - $Lang::tr{'system is offline'}";
485 # Check if enought free disk space is availabe.
486 if(&IDS
::checkdiskspace
()) {
487 $errormessage = "$Lang::tr{'not enough disk space'}";
490 # Check if any errors happend.
491 unless ($errormessage) {
492 # Lock the webpage and print notice about downloading
494 &working_notice
("$Lang::tr{'ids download new ruleset'}");
496 # Call subfunction to download the ruleset.
497 if(&IDS
::downloadruleset
()) {
498 $errormessage = $Lang::tr
{'could not download latest updates'};
500 # Call function to store the errormessage.
501 &IDS
::_store_error_message
($errormessage);
503 # Preform a reload of the page.
506 # Call subfunction to launch oinkmaster.
509 # Check if the IDS is running.
510 if(&IDS
::ids_is_running
()) {
511 # Call suricatactrl to perform a reload.
512 &IDS
::call_suricatactrl
("reload");
515 # Perform a reload of the page.
520 } elsif ($cgiparams{'IDS'} eq $Lang::tr
{'save'}) {
523 my $monitored_zones = 0;
525 # Read-in current (old) IDS settings.
526 &General
::readhash
("$IDS::ids_settings_file", \
%oldidssettings);
528 # Prevent form name from been stored in conf file.
529 delete $cgiparams{'IDS'};
531 # Check if the IDS should be enabled.
532 if ($cgiparams{'ENABLE_IDS'} eq "on") {
533 # Check if any ruleset is available. Otherwise abort and display an error.
534 unless(%used_providers) {
535 $errormessage = $Lang::tr
{'ids no ruleset available'};
538 # Loop through the array of available interfaces.
539 foreach my $zone (@network_zones) {
540 # Convert interface name into upper case.
541 my $zone_upper = uc($zone);
543 # Check if the IDS is enabled for this interaces.
544 if ($cgiparams{"ENABLE_IDS_$zone_upper"}) {
550 # Check if at least one zone should be monitored, or show an error.
551 unless ($monitored_zones >= 1) {
552 $errormessage = $Lang::tr
{'ids no network zone'};
556 # Go on if there are no error messages.
557 if (!$errormessage) {
558 # Store settings into settings file.
559 &General
::writehash
("$IDS::ids_settings_file", \
%cgiparams);
562 # Check if the the automatic rule update hass been touched.
563 if($cgiparams{'AUTOUPDATE_INTERVAL'} ne $oldidssettings{'AUTOUPDATE_INTERVAL'}) {
564 # Call suricatactrl to set the new interval.
565 &IDS
::call_suricatactrl
("cron", $cgiparams{'AUTOUPDATE_INTERVAL'});
568 # Generate file to store the home net.
569 &IDS
::generate_home_net_file
();
571 # Generate file to the store the DNS servers.
572 &IDS
::generate_dns_servers_file
();
574 # Generate file to store the HTTP ports.
575 &IDS
::generate_http_ports_file
();
577 # Write the modify sid's file and pass the taken ruleaction.
578 &IDS
::write_modify_sids_file
();
580 # Check if "MONITOR_TRAFFIC_ONLY" has been changed.
581 if($cgiparams{'MONITOR_TRAFFIC_ONLY'} ne $oldidssettings{'MONITOR_TRAFFIC_ONLY'}) {
582 # Check if a ruleset exists.
583 if (%used_providers) {
584 # Lock the webpage and print message.
585 &working_notice
("$Lang::tr{'ids working'}");
587 # Call oinkmaster to alter the ruleset.
590 # Set reload_page to "True".
595 # Check if the IDS currently is running.
596 if(&IDS
::ids_is_running
()) {
597 # Check if ENABLE_IDS is set to on.
598 if($cgiparams{'ENABLE_IDS'} eq "on") {
599 # Call suricatactrl to perform a reload of suricata.
600 &IDS
::call_suricatactrl
("reload");
602 # Call suricatactrl to stop suricata.
603 &IDS
::call_suricatactrl
("stop");
606 # Call suricatactrl to start suricata.
607 &IDS
::call_suricatactrl
("start");
610 # Check if the page should be reloaded.
612 # Perform a reload of the page.
616 # Toggle Enable/Disable autoupdate for a provider
617 } elsif ($cgiparams{'AUTOUPDATE'} eq $Lang::tr
{'toggle enable disable'}) {
618 my %used_providers = ();
620 # Only go further, if an ID has been passed.
621 if ($cgiparams{'ID'}) {
622 # Assign the given ID.
623 my $id = $cgiparams{'ID'};
625 # Undef the given ID.
626 undef($cgiparams{'ID'});
628 # Read-in providers settings file.
629 &General
::readhasharray
($IDS::providers_settings_file
, \
%used_providers);
631 # Grab the configured status of the corresponding entry.
632 my $status_autoupdate = $used_providers{$id}[2];
635 if ($status_autoupdate eq "disabled") {
636 $status_autoupdate = "enabled";
638 $status_autoupdate = "disabled";
641 # Modify the status of the existing entry.
642 $used_providers{$id} = ["$used_providers{$id}[0]", "$used_providers{$id}[1]", "$status_autoupdate", "$used_providers{$id}[3]"];
644 # Write the changed hash to the providers settings file.
645 &General
::writehasharray
($IDS::providers_settings_file
, \
%used_providers);
648 # Add/Edit a provider to the list of used providers.
650 } elsif (($cgiparams{'PROVIDERS'} eq "$Lang::tr{'add'}") || ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'update'}")) {
651 my %used_providers = ();
653 # Read-in providers settings file.
654 &General
::readhasharray
("$IDS::providers_settings_file", \
%used_providers);
656 # Assign some nice human-readable values.
657 my $provider = $cgiparams{'PROVIDER'};
658 my $subscription_code = $cgiparams{'SUBSCRIPTION_CODE'};
659 my $status_autoupdate;
661 # Handle autoupdate checkbox.
662 if ($cgiparams{'ENABLE_AUTOUPDATE'} eq "on") {
663 $status_autoupdate = "enabled";
665 $status_autoupdate = "disabled";
668 # Check if we are going to add a new provider.
669 if ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'add'}") {
670 # Loop through the hash of used providers.
671 foreach my $id ( keys %used_providers) {
672 # Check if the choosen provider is already in use.
673 if ($used_providers{$id}[0] eq "$provider") {
674 # XXX - add to language file.
675 # Assign error message.
676 $errormessage = "The choosen provider is already in use.";
681 # Check if the provider requires a subscription code.
682 if ($IDS::Ruleset
::Providers
{$provider}{'requires_subscription'} eq "True") {
683 # Check if an subscription code has been provided.
684 if ($subscription_code) {
685 # Check if the code contains unallowed chars.
686 unless ($subscription_code =~ /^[a-z0-9]+$/) {
687 $errormessage = $Lang::tr
{'invalid input for subscription code'};
690 # Print an error message, that an subsription code is required for this
692 $errormessage = $Lang::tr
{'ids subscription code required'};
696 # Go further if there was no error.
697 if ($errormessage eq '') {
701 # Check if we should edit an existing entry and got an ID.
702 if (($cgiparams{'PROVIDERS'} eq $Lang::tr
{'update'}) && ($cgiparams{'ID'})) {
703 # Assin the provided id.
704 $id = $cgiparams{'ID'};
706 # Undef the given ID.
707 undef($cgiparams{'ID'});
709 # Grab the configured status of the corresponding entry.
710 $status = $used_providers{$id}[3];
712 # Each newly added entry automatically should be enabled.
715 # Generate the ID for the new entry.
717 # Sort the keys by their ID and store them in an array.
718 my @keys = sort { $a <=> $b } keys %used_providers;
720 # Reverse the key array.
721 my @reversed = reverse(@keys);
723 # Obtain the last used id.
724 my $last_id = @reversed[0];
726 # Increase the last id by one and use it as id for the new entry.
730 # Add/Modify the entry to/in the used providers hash..
731 $used_providers{$id} = ["$provider", "$subscription_code", "$status_autoupdate", "$status"];
733 # Write the changed hash to the providers settings file.
734 &General
::writehasharray
($IDS::providers_settings_file
, \
%used_providers);
736 # Check if a new provider will be added.
737 if ($cgiparams{'PROVIDERS'} eq $Lang::tr
{'add'}) {
738 # Lock the webpage and print notice about downloading
740 &working_notice
("$Lang::tr{'ids working'}");
742 # Download the ruleset.
743 &IDS
::downloadruleset
($provider);
745 # Extract the ruleset
746 &IDS
::extractruleset
($provider);
749 &IDS
::move_tmp_ruleset
();
751 # Cleanup temporary directory.
752 &IDS
::cleanup_tmp_directory
();
754 # Create new empty file for used rulefiles
756 &IDS
::write_used_provider_rulefiles_file
($provider);
758 # Perform a reload of the page.
762 # Undefine providers flag.
763 undef($cgiparams{'PROVIDERS'});
766 ## Toggle Enabled/Disabled for an existing provider.
768 } elsif ($cgiparams{'PROVIDERS'} eq $Lang::tr
{'toggle enable disable'}) {
769 my %used_providers = ();
771 # Only go further, if an ID has been passed.
772 if ($cgiparams{'ID'}) {
773 # Assign the given ID.
774 my $id = $cgiparams{'ID'};
776 # Undef the given ID.
777 undef($cgiparams{'ID'});
779 # Read-in file which contains the provider settings.
780 &General
::readhasharray
($IDS::providers_settings_file
, \
%used_providers);
782 # Grab the configured status of the corresponding entry.
783 my $status = $used_providers{$id}[3];
786 if ($status eq "enabled") {
787 $status = "disabled";
792 # Modify the status of the existing entry.
793 $used_providers{$id} = ["$used_providers{$id}[0]", "$used_providers{$id}[1]", "$used_providers{$id}[2]", "$status"];
795 # Write the changed hash to the providers settings file.
796 &General
::writehasharray
($IDS::providers_settings_file
, \
%used_providers);
798 # Get all enabled providers.
799 my @enabled_providers = &IDS
::get_enabled_providers
();
801 # Write the main providers include file.
802 &IDS
::write_main_used_rulefiles_file
(@enabled_providers);
804 # Check if the IDS is running.
805 if(&IDS
::ids_is_running
()) {
806 # Gather the amount of enabled providers (elements in the array).
807 my $amount = @enabled_providers;
809 # Check if there are still enabled ruleset providers.
811 # Call suricatactrl to perform a restart.
812 &IDS
::call_suricatactrl
("restart");
814 # No active ruleset provider, suricata has to be stopped.
817 &IDS
::call_suricatactrl
("stop");
821 # Undefine providers flag.
822 undef($cgiparams{'PROVIDERS'});
825 ## Remove provider from the list of used providers.
827 } elsif ($cgiparams{'PROVIDERS'} eq $Lang::tr
{'remove'}) {
828 my %used_providers = ();
830 # Read-in provider settings file.
831 &General
::readhasharray
($IDS::providers_settings_file
, \
%used_providers);
833 # Grab the provider name bevore deleting it from hash.
834 my $provider = $used_providers{$cgiparams{'ID'}}[0];
836 # Drop entry from the hash.
837 delete($used_providers{$cgiparams{'ID'}});
839 # Undef the given ID.
840 undef($cgiparams{'ID'});
842 # Write the changed hash to the provide settings file.
843 &General
::writehasharray
($IDS::providers_settings_file
, \
%used_providers);
845 # Lock the webpage and print message.
846 &working_notice
("$Lang::tr{'ids apply ruleset changes'}");
848 # Drop the stored ruleset file.
849 &IDS
::drop_dl_rulesfile
($provider);
851 # Get the name of the provider rulessets include file.
852 my $provider_used_rulefile = &get_used_provider_rulesfile_file
($provider);
854 # Drop the file, it is not longer needed.
855 unlink("$provider_used_rulefile");
857 # Regenerate ruleset.
860 # Gather all enabled providers.
861 my @enabled_providers = &IDS
::get_enabled_providers
();
863 # Regenerate main providers include file.
864 &IDS
::write_main_used_rulefiles_file
(@enabled_providers);
866 # Check if the IDS is running.
867 if(&IDS
::ids_is_running
()) {
868 # Get amount of enabled providers.
869 my $amount = @enabled_providers;
871 # Check if at least one enabled provider remains.
873 # Call suricatactrl to perform a reload.
874 &IDS
::call_suricatactrl
("restart");
876 # Stop suricata if no enabled provider remains.
878 # Call suricatactrel to perform the stop.
879 &IDS
::call_suricatactrl
("stop");
883 # Undefine providers flag.
884 undef($cgiparams{'PROVIDERS'});
890 &Header
::openpage
($Lang::tr
{'intrusion detection system'}, 1, '');
892 &Header
::openbigbox
('100%', 'left', '', $errormessage);
894 &show_display_error_message
();
896 if ($cgiparams{'RULESET'} eq "$Lang::tr{'ids customize ruleset'}" ) {
897 &show_customize_ruleset
();
898 } elsif ($cgiparams{'PROVIDERS'} ne "") {
899 &show_add_provider
();
904 &Header
::closebigbox
();
905 &Header
::closepage
();
908 ## Tiny function to show if a error message happened.
910 sub show_display_error_message
() {
912 &Header
::openbox
('100%', 'left', $Lang::tr
{'error messages'});
913 print "<class name='base'>$errormessage\n";
914 print " </class>\n";
920 ## Function to display the main IDS page.
922 sub show_mainpage
() {
923 # Read-in idssettings and provider settings.
924 &General
::readhash
("$IDS::ids_settings_file", \
%idssettings);
925 &General
::readhasharray
("$IDS::providers_settings_file", \
%used_providers);
927 # If no autoupdate intervall has been configured yet, set default value.
928 unless(exists($idssettings{'AUTOUPDATE_INTERVAL'})) {
929 # Set default to "weekly".
930 $idssettings{'AUTOUPDATE_INTERVAL'} = 'weekly';
933 # Read-in ignored hosts.
934 &General
::readhasharray
("$IDS::settingsdir/ignored", \
%ignored);
936 $checked{'ENABLE_IDS'}{'off'} = '';
937 $checked{'ENABLE_IDS'}{'on'} = '';
938 $checked{'ENABLE_IDS'}{$idssettings{'ENABLE_IDS'}} = "checked='checked'";
939 $checked{'MONITOR_TRAFFIC_ONLY'}{'off'} = '';
940 $checked{'MONITOR_TRAFFIC_ONLY'}{'on'} = '';
941 $checked{'MONITOR_TRAFFIC_ONLY'}{$idssettings{'MONITOR_TRAFFIC_ONLY'}} = "checked='checked'";
942 $selected{'AUTOUPDATE_INTERVAL'}{'off'} = '';
943 $selected{'AUTOUPDATE_INTERVAL'}{'daily'} = '';
944 $selected{'AUTOUPDATE_INTERVAL'}{'weekly'} = '';
945 $selected{'AUTOUPDATE_INTERVAL'}{$idssettings{'AUTOUPDATE_INTERVAL'}} = "selected='selected'";
947 # Draw current state of the IDS
948 &Header
::openbox
('100%', 'left', $Lang::tr
{'intrusion detection system'});
950 # Check if the IDS is running and obtain the process-id.
951 my $pid = &IDS
::ids_is_running
();
953 # Display some useful information, if suricata daemon is running.
955 # Gather used memory.
956 my $memory = &get_memory_usage
($pid);
959 <table width='95%' cellspacing='0' class='tbl'>
961 <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th>
965 <td class='base'>$Lang::tr{'guardian daemon'}</td>
966 <td align='center' colspan='2' width='75%' bgcolor='${Header::colourgreen}'><font color='white'><strong>$Lang::tr{'running'}</strong></font></td>
970 <td class='base'></td>
971 <td bgcolor='$color{'color20'}' align='center'><strong>PID</strong></td>
972 <td bgcolor='$color{'color20'}' align='center'><strong>$Lang::tr{'memory'}</strong></td>
976 <td class='base'></td>
977 <td bgcolor='$color{'color22'}' align='center'>$pid</td>
978 <td bgcolor='$color{'color22'}' align='center'>$memory KB</td>
983 # Otherwise display a hint that the service is not launched.
985 <table width='95%' cellspacing='0' class='tbl'>
987 <th bgcolor='$color{'color20'}' colspan='3' align='left'><strong>$Lang::tr{'intrusion detection'}</strong></th>
991 <td class='base'>$Lang::tr{'guardian daemon'}</td>
992 <td align='center' width='75%' bgcolor='${Header::colourred}'><font color='white'><strong>$Lang::tr{'stopped'}</strong></font></td>
998 # Only show this area, if at least one ruleset provider is configured.
999 if (%used_providers) {
1003 <br><br><h2>$Lang::tr{'settings'}</h2>
1005 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
1006 <table width='100%' border='0'>
1008 <td class='base' colspan='2'>
1009 <input type='checkbox' name='ENABLE_IDS' $checked{'ENABLE_IDS'}{'on'}> $Lang::tr{'ids enable'}
1012 <td class='base' colspan='2'>
1013 <input type='checkbox' name='MONITOR_TRAFFIC_ONLY' $checked{'MONITOR_TRAFFIC_ONLY'}{'on'}> $Lang::tr{'ids monitor traffic only'}
1025 <td colspan='4'><b>$Lang::tr{'ids monitored interfaces'}</b><br></td>
1032 # Loop through the array of available networks and print config options.
1033 foreach my $zone (@network_zones) {
1035 my $checked_forward;
1037 # Convert current zone name to upper case.
1038 my $zone_upper = uc($zone);
1041 my $zone_name = $zone;
1043 # Dirty hack to get the correct language string for the red zone.
1044 if ($zone eq "red") {
1045 $zone_name = "red1";
1048 # Grab checkbox status from settings hash.
1049 if ($idssettings{"ENABLE_IDS_$zone_upper"} eq "on") {
1050 $checked_input = "checked = 'checked'";
1053 print "<td class='base' width='20%'>\n";
1054 print "<input type='checkbox' name='ENABLE_IDS_$zone_upper' $checked_input>\n";
1055 print " $Lang::tr{'enabled on'}<font color='$colourhash{$zone}'> $Lang::tr{$zone_name}</font>\n";
1070 <td colspan='4'><b>$Lang::tr{'ids automatic rules update'}</b></td>
1075 <select name='AUTOUPDATE_INTERVAL'>
1076 <option value='off' $selected{'AUTOUPDATE_INTERVAL'}{'off'} >- $Lang::tr{'Disabled'} -</option>
1077 <option value='daily' $selected{'AUTOUPDATE_INTERVAL'}{'daily'} >$Lang::tr{'Daily'}</option>
1078 <option value='weekly' $selected{'AUTOUPDATE_INTERVAL'}{'weekly'} >$Lang::tr{'Weekly'}</option>
1086 <table width='100%'>
1088 <td align='right'><input type='submit' name='IDS' value='$Lang::tr{'save'}' /></td>
1097 &Header
::closebox
();
1100 # Used Ruleset Providers section.
1102 &Header
::openbox
('100%', 'center', $Lang::tr
{'ids ruleset settings'});
1105 <table width='100%' border='0'>
1107 <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'ids provider'}</b></td>
1108 <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'date'}</b></td>
1109 <td class='base' bgcolor='$color{'color20'}' align='center'><b>$Lang::tr{'ids autoupdates'}</b></td>
1110 <td class='base' bgcolor='$color{'color20'}'></td>
1111 <td class='base' colspan='3' bgcolor='$color{'color20'}'></td>
1114 # Check if some providers has been configured.
1115 if (keys (%used_providers)) {
1118 # Loop through all entries of the hash.
1119 foreach my $id (sort keys(%used_providers)) {
1120 # Assign data array positions to some nice variable names.
1121 my $provider = $used_providers{$id}[0];
1122 my $provider_name = &get_provider_name
($provider);
1124 #XXX my $rulesdate = &IDS::get_ruleset_date($provider);
1127 my $subscription_code = $used_providers{$id}[1];
1128 my $autoupdate_status = $used_providers{$id}[2];
1129 my $status = $used_providers{$id}[3];
1131 # Check if the item number is even or not.
1133 $col="bgcolor='$color{'color22'}'";
1135 $col="bgcolor='$color{'color20'}'";
1138 # Choose icons for the checkboxes.
1141 my $autoupdate_status_gif;
1142 my $autoupdate_status_gdesc;
1144 # Check if the status is enabled and select the correct image and description.
1145 if ($status eq 'enabled' ) {
1146 $status_gif = 'on.gif';
1147 $status_gdesc = $Lang::tr
{'click to disable'};
1149 $status_gif = 'off.gif';
1150 $status_gdesc = $Lang::tr
{'click to enable'};
1153 # Check if the autoupdate status is enabled and select the correct image and description.
1154 if ($autoupdate_status eq 'enabled') {
1155 $autoupdate_status_gif = 'on.gif';
1156 $autoupdate_status_gdesc = $Lang::tr
{'click to disable'};
1158 $autoupdate_status_gif = 'off.gif';
1159 $autoupdate_status_gdesc = $Lang::tr
{'click to enable'};
1164 <td width='33%' class='base' $col>$provider_name</td>
1165 <td width='30%' class='base' $col>$rulesdate</td>
1167 <td align='center' $col>
1168 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
1169 <input type='hidden' name='AUTOUPDATE' value='$Lang::tr{'toggle enable disable'}' />
1170 <input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$autoupdate_status_gif' alt='$autoupdate_status_gdesc' title='$autoupdate_status_gdesc' />
1171 <input type='hidden' name='ID' value='$id' />
1175 <td align='center' $col>
1176 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
1177 <input type='hidden' name='PROVIDERS' value='$Lang::tr{'toggle enable disable'}'>
1178 <input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$status_gif' alt='$status_gdesc' title='$status_gdesc'>
1179 <input type='hidden' name='ID' value='$id'>
1183 <td align='center' $col>
1184 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
1185 <input type='hidden' name='PROVIDERS' value='$Lang::tr{'edit'}'>
1186 <input type='image' name='$Lang::tr{'edit'}' src='/images/edit.gif' alt='$Lang::tr{'edit'}' title='$Lang::tr{'edit'}'>
1187 <input type='hidden' name='ID' value='$id'>
1191 <td align='center' $col>
1192 <form method='post' name='$provider' action='$ENV{'SCRIPT_NAME'}'>
1193 <input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' title='$Lang::tr{'remove'}' alt='$Lang::tr{'remove'}'>
1194 <input type='hidden' name='ID' value='$id'>
1195 <input type='hidden' name='PROVIDERS' value='$Lang::tr{'remove'}'>
1203 # Print notice that currently no hosts are ignored.
1205 print "<td class='base' colspan='2'>$Lang::tr{'guardian no entries'}</td>\n";
1211 # Section to add new elements or edit existing ones.
1218 <table width='100%'>
1219 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
1223 # Only show this button if a ruleset provider is configured.
1224 if (%used_providers) {
1225 print "<input type='submit' name='RULESET' value='$Lang::tr{'ids customize ruleset'}'>\n";
1228 <input type='submit' name='PROVIDERS' value='$Lang::tr{'ids add provider'}'>
1235 &Header
::closebox
();
1238 # Whitelist / Ignorelist
1240 &Header
::openbox
('100%', 'center', $Lang::tr
{'ids ignored hosts'});
1243 <table width='100%'>
1245 <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'ip address'}</b></td>
1246 <td class='base' bgcolor='$color{'color20'}'><b>$Lang::tr{'remark'}</b></td>
1247 <td class='base' colspan='3' bgcolor='$color{'color20'}'></td>
1250 # Check if some hosts have been added to be ignored.
1251 if (keys (%ignored)) {
1254 # Loop through all entries of the hash.
1255 while( (my $key) = each %ignored) {
1256 # Assign data array positions to some nice variable names.
1257 my $address = $ignored{$key}[0];
1258 my $remark = $ignored{$key}[1];
1259 my $status = $ignored{$key}[2];
1261 # Check if the key (id) number is even or not.
1262 if ($cgiparams{'ID'} eq $key) {
1263 $col="bgcolor='${Header::colouryellow}'";
1264 } elsif ($key % 2) {
1265 $col="bgcolor='$color{'color22'}'";
1267 $col="bgcolor='$color{'color20'}'";
1270 # Choose icon for the checkbox.
1274 # Check if the status is enabled and select the correct image and description.
1275 if ($status eq 'enabled' ) {
1277 $gdesc = $Lang::tr
{'click to disable'};
1280 $gdesc = $Lang::tr
{'click to enable'};
1285 <td width='20%' class='base' $col>$address</td>
1286 <td width='65%' class='base' $col>$remark</td>
1288 <td align='center' $col>
1289 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
1290 <input type='hidden' name='WHITELIST' value='$Lang::tr{'toggle enable disable'}'>
1291 <input type='image' name='$Lang::tr{'toggle enable disable'}' src='/images/$gif' alt='$gdesc' title='$gdesc'>
1292 <input type='hidden' name='ID' value='$key'>
1296 <td align='center' $col>
1297 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
1298 <input type='hidden' name='WHITELIST' value='$Lang::tr{'edit'}'>
1299 <input type='image' name='$Lang::tr{'edit'}' src='/images/edit.gif' alt='$Lang::tr{'edit'}' title='$Lang::tr{'edit'}'>
1300 <input type='hidden' name='ID' value='$key'>
1304 <td align='center' $col>
1305 <form method='post' name='$key' action='$ENV{'SCRIPT_NAME'}'>
1306 <input type='image' name='$Lang::tr{'remove'}' src='/images/delete.gif' title='$Lang::tr{'remove'}' alt='$Lang::tr{'remove'}'>
1307 <input type='hidden' name='ID' value='$key'>
1308 <input type='hidden' name='WHITELIST' value='$Lang::tr{'remove'}'>
1315 # Print notice that currently no hosts are ignored.
1317 print "<td class='base' colspan='2'>$Lang::tr{'guardian no entries'}</td>\n";
1323 # Section to add new elements or edit existing ones.
1329 <div align='center'>
1330 <table width='100%'>
1333 # Assign correct headline and button text.
1338 # Check if an ID (key) has been given, in this case an existing entry should be edited.
1339 if ($cgiparams{'ID'} ne '') {
1340 $buttontext = $Lang::tr
{'update'};
1341 print "<tr><td class='boldbase' colspan='3'><b>$Lang::tr{'update'}</b></td></tr>\n";
1343 # Grab address and remark for the given key.
1344 $entry_address = $ignored{$cgiparams{'ID'}}[0];
1345 $entry_remark = $ignored{$cgiparams{'ID'}}[1];
1347 $buttontext = $Lang::tr
{'add'};
1348 print "<tr><td class='boldbase' colspan='3'><b>$Lang::tr{'dnsforward add a new entry'}</b></td></tr>\n";
1352 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
1353 <input type='hidden' name='ID' value='$cgiparams{'ID'}'>
1355 <td width='30%'>$Lang::tr{'ip address'}: </td>
1356 <td width='50%'><input type='text' name='IGNORE_ENTRY_ADDRESS' value='$entry_address' size='24' /></td>
1358 <td width='30%'>$Lang::tr{'remark'}: </td>
1359 <td wicth='50%'><input type='text' name=IGNORE_ENTRY_REMARK value='$entry_remark' size='24' /></td>
1360 <td align='center' width='20%'><input type='submit' name='WHITELIST' value='$buttontext' /></td>
1367 &Header
::closebox
();
1371 ## Function to show the customize ruleset section.
1373 sub show_customize_ruleset
() {
1377 # Java script variable declaration for show and hide.
1378 print"var show = \"$Lang::tr{'ids show'}\"\;\n";
1379 print"var hide = \"$Lang::tr{'ids hide'}\"\;\n";
1382 // Tiny java script function to show/hide the rules
1383 // of a given category.
1384 function showhide(tblname) {
1385 \$("#" + tblname).toggle();
1387 // Get current content of the span element.
1388 var content = document.getElementById("span_" + tblname);
1390 if (content.innerHTML === show) {
1391 content.innerHTML = hide;
1393 content.innerHTML = show;
1399 &Header
::openbox
('100%', 'LEFT', "$Lang::tr{'intrusion detection system rules'}" );
1400 print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n";
1402 # Output display table for rule files
1403 print "<table width='100%'>\n";
1405 # Loop over each rule file
1406 foreach my $rulefile (sort keys(%idsrules)) {
1407 my $rulechecked = '';
1409 # Check if rule file is enabled
1410 if ($idsrules{$rulefile}{'Rulefile'}{'State'} eq 'on') {
1411 $rulechecked = 'CHECKED';
1414 # Convert rulefile name into category name.
1415 my $categoryname = &_rulefile_to_category
($rulefile);
1417 # Table and rows for the rule files.
1419 print"<td class='base' width='5%'>\n";
1420 print"<input type='checkbox' name='$rulefile' $rulechecked>\n";
1422 print"<td class='base' width='90%'><b>$rulefile</b></td>\n";
1423 print"<td class='base' width='5%' align='right'>\n";
1424 print"<a href=\"javascript:showhide('$categoryname')\"><span id='span_$categoryname'>$Lang::tr{'ids show'}</span></a>\n";
1428 # Rows which will be hidden per default and will contain the single rules.
1429 print"<tr style='display:none' id='$categoryname'>\n";
1430 print"<td colspan='3'>\n";
1437 # New table for the single rules.
1438 print "<table width='100%'>\n";
1440 # Loop over rule file rules
1441 foreach my $sid (sort {$a <=> $b} keys(%{$idsrules{$rulefile}})) {
1443 my $ruledefchecked = '';
1445 # Skip rulefile itself.
1446 next if ($sid eq "Rulefile");
1448 # If 2 rules have been displayed, start a new row
1449 if (($lines % 2) == 0) {
1450 print "</tr><tr>\n";
1452 # Increase rows by once.
1458 $col="bgcolor='$color{'color20'}'";
1460 $col="bgcolor='$color{'color22'}'";
1464 if ($idsrules{$rulefile}{$sid}{'State'} eq 'on') {
1465 $ruledefchecked = 'CHECKED';
1468 # Create rule checkbox and display rule description
1469 print "<td class='base' width='5%' align='right' $col>\n";
1470 print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n";
1472 print "<td class='base' width='45%' $col>$idsrules{$rulefile}{$sid}{'Description'}</td>";
1474 # Increment rule count
1478 # If do not have a second rule for row, create empty cell
1479 if (($lines % 2) != 0) {
1480 print "<td class='base'></td>";
1483 # Close display table
1484 print "</tr></table></td></tr>";
1487 # Close display table
1491 <table width='100%'>
1493 <td width='100%' align='right'>
1494 <input type='submit' value='$Lang::tr{'fwhost back'}'>
1495 <input type='submit' name='RULESET' value='$Lang::tr{'ids apply'}'>
1502 &Header
::closebox
();
1507 ## Function to show section for add/edit a provider.
1509 sub show_add_provider
() {
1510 my %used_providers = ();
1511 my @subscription_providers;
1513 # Read -in providers settings file.
1514 &General
::readhasharray
("$IDS::providers_settings_file", \
%used_providers);
1516 # Get all supported ruleset providers.
1517 my @ruleset_providers = &IDS
::get_ruleset_providers
();
1522 # Generate Java Script Object which contains the URL of the providers.
1523 print "\t// Object, which contains the webpages of the ruleset providers.\n";
1524 print "\tvar url = {\n";
1526 # Loop through the array of supported providers.
1527 foreach my $provider (@ruleset_providers) {
1528 # Check if the provider requires a subscription.
1529 if ($IDS::Ruleset
::Providers
{$provider}{'requires_subscription'} eq "True") {
1530 # Add the provider to the array of subscription_providers.
1531 push(@subscription_providers, $provider);
1534 # Grab the URL for the provider.
1535 my $url = $IDS::Ruleset
::Providers
{$provider}{'website'};
1537 # Print the URL to the Java Script Object.
1538 print "\t\t$provider: \"$url\"\,\n";
1541 # Close the Java Script Object declaration.
1544 # Generate Java Script Array which contains the provider that requires a subscription.
1546 $line = join("', '", @subscription_providers);
1548 print "\t// Array which contains the providers that requires a subscription.\n";
1549 print "\tsubscription_provider = ['$line']\;\n\n";
1552 // Java Script function to swap the text input field for
1553 // entering a subscription code.
1554 var update_provider = function() {
1555 if(inArray(\$('#PROVIDER').val(), subscription_provider)) {
1556 \$('.subscription_code').show();
1558 \$('.subscription_code').hide();
1561 // Call function to change the website url.
1562 change_url(\$('#PROVIDER').val());
1565 // Java Script function to check if a given value is part of
1567 function inArray(value,array) {
1568 var count=array.length;
1570 for(var i=0;i<count;i++) {
1571 if(array[i]===value){
1579 // Tiny function to change the website url based on the selected element in the "PROVIDERS"
1581 function change_url(provider) {
1582 // Get and change the href to the corresponding url.
1583 document.getElementById("website").href = url[provider];
1586 // JQuery function to call corresponding function when
1587 // the ruleset provider is changed or the page is loaded for showing/hiding
1588 // the subscription_code area.
1589 \$(document).ready(function() {
1590 \$('#PROVIDER').change(update_provider);
1598 &Header
::openbox
('100%', 'center', $Lang::tr
{'ids provider settings'});
1600 # Check if an existing provider should be edited.
1601 if($cgiparams{'PROVIDERS'} eq "$Lang::tr{'edit'}") {
1602 # Check if autoupdate is enabled for this provider.
1603 if ($used_providers{$cgiparams{'ID'}}[2] eq "enabled") {
1604 # Set the checkbox to be checked.
1605 $checked{'ENABLE_AUTOUPDATE'} = "checked='checked'";
1607 } elsif ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'ids add provider'}") {
1608 # Set the autoupdate to true as default.
1609 $checked{'ENABLE_AUTOUPDATE'} = "checked='checked'";
1613 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
1614 <table width='100%' border='0'>
1616 <td colspan='2'><b>$Lang::tr{'ids provider'}</b></td>
1621 <input type='hidden' name='ID' value='$cgiparams{'ID'}'>
1622 <select name='PROVIDER' id='PROVIDER'>
1625 # Loop through the array of ruleset providers.
1626 foreach my $provider (@ruleset_providers) {
1627 # Get the provider name.
1628 my $provider_name = &get_provider_name
($provider);
1630 # Pre-select the provider if one is given.
1631 if (($used_providers{$cgiparams{'ID'}}[0] eq "$provider") || ($cgiparams{'PROVIDER'} eq "$provider")) {
1632 $selected{$provider} = "selected='selected'";
1635 # Add the provider to the dropdown menu.
1636 print "<option value='$provider' $selected{$provider}>$provider_name</option>\n";
1643 <b><a id="website" target="_blank" href="#">$Lang::tr{'ids visit provider website'}</a></b>
1648 <td colspan='2'><br><br></td>
1651 <tr class='subscription_code' style='display:none' id='subscription_code'>
1656 <b>$Lang::tr{'subscription code'}</b>
1662 <input type='text' size='40' name='SUBSCRIPTION_CODE' value='$used_providers{$cgiparams{'ID'}}[1]'>
1675 <input type='checkbox' name='ENABLE_AUTOUPDATE' $checked{'ENABLE_AUTOUPDATE'}> $Lang::tr{'ids enable automatic updates'}
1680 <td colspan='2' align='right'>
1681 <input type='submit' value='$Lang::tr{'back'}'>
1684 # Check if a provider should be added or edited.
1685 if ($cgiparams{'PROVIDERS'} eq "$Lang::tr{'edit'}") {
1686 # Display button for updating the existing provider.
1687 print "<input type='submit' name='PROVIDERS' value='$Lang::tr{'update'}'>\n";
1689 # Display button to add the new provider.
1690 print "<input type='submit' name='PROVIDERS' value='$Lang::tr{'add'}'>\n";
1699 &Header
::closebox
();
1703 ## A function to display a notice, to lock the webpage and
1704 ## tell the user which action currently will be performed.
1706 sub working_notice
($) {
1709 &Header
::openpage
($Lang::tr
{'intrusion detection system'}, 1, '');
1710 &Header
::openbigbox
('100%', 'left', '', $errormessage);
1711 &Header
::openbox
( 'Waiting', 1,);
1715 <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td>
1720 &Header
::closebox
();
1721 &Header
::closebigbox
();
1722 &Header
::closepage
();
1726 ## A tiny function to perform a reload of the webpage after one second.
1729 print "<meta http-equiv='refresh' content='1'>\n";
1736 ## Private function to read-in and parse rules of a given rulefile.
1738 ## The given file will be read, parsed and all valid rules will be stored by ID,
1739 ## message/description and it's state in the idsrules hash.
1741 sub readrulesfile
($) {
1742 my $rulefile = shift;
1744 # Open rule file and read in contents
1745 open(RULEFILE
, "$IDS::rulespath/$rulefile") or die "Unable to read $rulefile!";
1747 # Store file content in an array.
1748 my @lines = <RULEFILE
>;
1753 # Loop over rule file contents
1754 foreach my $line (@lines) {
1755 # Remove whitespaces.
1759 next if ($line =~ /^\s*$/);
1765 # Gather rule sid and message from the ruleline.
1766 if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) {
1770 # Check if a rule has been found.
1772 # Add rule to the idsrules hash.
1773 $idsrules{$rulefile}{$sid}{'Description'} = $msg;
1775 # Grab status of the rule. Check if ruleline starts with a "dash".
1776 if ($line =~ /^\#/) {
1777 # If yes, the rule is disabled.
1778 $idsrules{$rulefile}{$sid}{'State'} = "off";
1780 # Otherwise the rule is enabled.
1781 $idsrules{$rulefile}{$sid}{'State'} = "on";
1789 ## Function to get the used memory of a given process-id.
1791 sub get_memory_usage
($) {
1796 # Try to open the status file for the given process-id on the pseudo
1798 if (open(FILE
, "/proc/$pid/status")) {
1799 # Loop through the entire file.
1801 # Splitt current line content and store them into variables.
1802 my ($key, $value) = split(":", $_, 2);
1804 # Check if the current key is the one which contains the memory usage.
1805 # The wanted one is VmRSS which contains the Real-memory (resident set)
1806 # of the entire process.
1807 if ($key eq "VmRSS") {
1808 # Found the memory usage add it to the memory variable.
1816 # Close file handle.
1819 # Return memory usage.
1823 # If the file could not be open, return nothing.
1828 ## Function to read-in the given enabled or disables sids file.
1830 sub read_enabled_disabled_sids_file
($) {
1833 # Temporary hash to store the sids and their state. It will be
1834 # returned at the end of this function.
1837 # Open the given filename.
1838 open(FILE
, "$file") or die "Could not open $file. $!\n";
1840 # Loop through the file.
1846 next if ($_ =~ /^\s*$/);
1849 next if ($_ =~ /^\#/);
1851 # Splitt line into sid and state part.
1852 my ($state, $sid) = split(" ", $_);
1854 # Skip line if the sid is not numeric.
1855 next unless ($sid =~ /\d+/ );
1857 # Check if the sid was enabled.
1858 if ($state eq "enablesid") {
1859 # Add the sid and its state as enabled to the temporary hash.
1860 $temphash{$sid} = "enabled";
1861 # Check if the sid was disabled.
1862 } elsif ($state eq "disablesid") {
1863 # Add the sid and its state as disabled to the temporary hash.
1864 $temphash{$sid} = "disabled";
1865 # Invalid state - skip the current sid and state.
1879 ## Function to get the provider name from the language file or providers file for a given handle.
1881 sub get_provider_name
($) {
1885 # Get the required translation string for the given provider handle.
1886 my $tr_string = $IDS::Ruleset
::Providers
{$handle}{'tr_string'};
1888 # Check if the translation string is available in the language files.
1889 if ($Lang::tr
{$tr_string}) {
1890 # Use the translated string from the language file.
1891 $provider_name = $Lang::tr
{$tr_string};
1893 # Fallback and use the provider summary from the providers file.
1894 $provider_name = $IDS::Ruleset
::Providers
{$handle}{'summary'};
1897 # Return the obtained provider name.
1898 return $provider_name;
1902 ## Private function to convert a given rulefile to a category name.
1903 ## ( No file extension anymore and if the name contained a dot, it
1904 ## would be replaced by a underline sign.)
1906 sub _rulefile_to_category
($) {
1907 my ($filename) = @_;
1909 # Splitt the filename into single chunks and store them in a
1911 my @parts = split(/\./, $filename);
1913 # Return / Remove last element of the temporary array.
1914 # This removes the file extension.
1917 # Join together the single elements of the temporary array.
1918 # If these are more than one, use a "underline" for joining.
1919 my $category = join '_', @parts;
1921 # Return the converted filename.