# along with IPFire; if not, write to the Free Software #
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #
# #
-# Copyright (C) 2018 IPFire Team <info@ipfire.org>. #
+# Copyright (C) 2018-2019 IPFire Team <info@ipfire.org> #
# #
############################################################################
+use strict;
+
package IDS;
require '/var/ipfire/general-functions.pl';
+require "${General::swroot}/network-functions.pl";
+require "${General::swroot}/suricata/ruleset-sources-new";
# Location where all config and settings files are stored.
our $settingsdir = "${General::swroot}/suricata";
-# File where the used rulefiles are stored.
+# File where the main file for providers ruleset inclusion exists.
+our $suricata_used_providers_file = "$settingsdir/suricata-used-providers.yaml";
+
+# File for static ruleset inclusions.
+our $suricata_static_rulefiles_file = "$settingsdir/suricata-static-included-rulefiles.yaml";
+
+# DEPRECATED - File where the used rulefiles are stored.
our $used_rulefiles_file = "$settingsdir/suricata-used-rulefiles.yaml";
# File where the addresses of the homenet are stored.
our $homenet_file = "$settingsdir/suricata-homenet.yaml";
+# File where the addresses of the used DNS servers are stored.
+our $dns_servers_file = "$settingsdir/suricata-dns-servers.yaml";
+
+# File where the HTTP ports definition is stored.
+our $http_ports_file = "$settingsdir/suricata-http-ports.yaml";
+
# File which contains the enabled sids.
our $enabled_sids_file = "$settingsdir/oinkmaster-enabled-sids.conf";
# File which stores the configured IPS settings.
our $ids_settings_file = "$settingsdir/settings";
-# File which stores the configured rules-settings.
+# DEPRECATED - File which stores the configured rules-settings.
our $rules_settings_file = "$settingsdir/rules-settings";
+# File which stores the used and configured ruleset providers.
+our $providers_settings_file = "$settingsdir/providers-settings";
+
# File which stores the configured settings for whitelisted addresses.
our $ignored_file = "$settingsdir/ignored";
-# Location and name of the tarball which contains the ruleset.
+# DEPRECATED - Location and name of the tarball which contains the ruleset.
our $rulestarball = "/var/tmp/idsrules.tar.gz";
+# Location where the downloaded rulesets are stored.
+our $dl_rules_path = "/var/tmp";
+
# File to store any errors, which also will be read and displayed by the wui.
our $storederrorfile = "/tmp/ids_storederror";
+# File to lock the WUI, while the autoupdate script runs.
+our $ids_page_lock_file = "/tmp/ids_page_locked";
+
# Location where the rulefiles are stored.
our $rulespath = "/var/lib/suricata";
+# Location of the classification file.
+our $classification_file = "$rulespath/classification.config";
+
+# Location of the sid to msg mappings file.
+our $sid_msg_file = "$rulespath/sid-msg.map";
+
+# Location to store local rules. This file will not be touched.
+our $local_rules_file = "$rulespath/local.rules";
+
# File which contains the rules to whitelist addresses on suricata.
our $whitelist_file = "$rulespath/whitelist.rules";
# Location of suricatactrl.
my $suricatactrl = "/usr/local/bin/suricatactrl";
+# Prefix for each downloaded ruleset.
+my $dl_rulesfile_prefix = "idsrules";
+
+# Temporary directory where the rulesets will be extracted.
+my $tmp_directory = "/tmp/ids_tmp";
+
+# Temporary directory where the extracted rules files will be stored.
+my $tmp_rules_directory = "$tmp_directory/rules";
+
+# Temporary directory where the extracted additional config files will be stored.
+my $tmp_conf_directory = "$tmp_directory/conf";
+
# Array with allowed commands of suricatactrl.
my @suricatactrl_cmds = ( 'start', 'stop', 'restart', 'reload', 'fix-rules-dir', 'cron' );
# Array with supported cron intervals.
my @cron_intervals = ('off', 'daily', 'weekly' );
+# Array which contains the HTTP ports, which statically will be declared as HTTP_PORTS in the
+# http_ports_file.
+my @http_ports = ('80', '81');
+
+# Array which contains a list of rulefiles which always will be included if they exist.
+my @static_included_rulefiles = ('local.rules', 'whitelist.rules' );
+
+# Hash which allows to convert the download type (dl_type) to a file suffix.
+my %dl_type_to_suffix = (
+ "archive" => ".tar.gz",
+ "plain" => ".rules",
+);
+
#
## Function to check and create all IDS related files, if the does not exist.
#
unless (-f "$enabled_sids_file") { &create_empty_file($enabled_sids_file); }
unless (-f "$disabled_sids_file") { &create_empty_file($disabled_sids_file); }
unless (-f "$modify_sids_file") { &create_empty_file($modify_sids_file); }
- unless (-f "$used_rulefiles_file") { &create_empty_file($used_rulefiles_file); }
+ unless (-f "$suricata_used_providers_file") { &create_empty_file($suricata_used_providers_file); }
unless (-f "$ids_settings_file") { &create_empty_file($ids_settings_file); }
- unless (-f "$rules_settings_file") { &create_empty_file($rules_settings_file); }
+ unless (-f "$providers_settings_file") { &create_empty_file($providers_settings_file); }
unless (-f "$ignored_file") { &create_empty_file($ignored_file); }
unless (-f "$whitelist_file" ) { &create_empty_file($whitelist_file); }
}
+#
+## Function to get a list of all available ruleset providers.
+##
+## They will be returned as a sorted array.
+#
+sub get_ruleset_providers() {
+ my @providers;
+
+ # Loop through the hash of providers.
+ foreach my $provider ( keys %IDS::Ruleset::Providers ) {
+ # Add the provider to the array.
+ push(@providers, $provider);
+ }
+
+ # Sort and return the array.
+ return sort(@providers);
+}
+
+#
+## Function to get a list of all enabled ruleset providers.
+##
+## They will be returned as an array.
+#
+sub get_enabled_providers () {
+ my %used_providers = ();
+
+ # Array to store the enabled providers.
+ my @enabled_providers = ();
+
+ # Read-in the providers config file.
+ &General::readhasharray("$providers_settings_file", \%used_providers);
+
+ # Loop through the hash of used_providers.
+ foreach my $id (keys %used_providers) {
+ # Skip disabled providers.
+ next unless ($used_providers{$id}[3] eq "enabled");
+
+ # Grab the provider handle.
+ my $provider = "$used_providers{$id}[0]";
+
+ # Add the provider to the array of enabled providers.
+ push(@enabled_providers, $provider);
+ }
+
+ # Return the array.
+ return @enabled_providers;
+}
+
#
## Function for checking if at least 300MB of free disk space are available
## on the "/var" partition.
#
sub checkdiskspace () {
# Call diskfree to gather the free disk space of /var.
- my @df = `/bin/df -B M /var`;
+ my @df = &General::system_output("/bin/df", "-B", "M", "/var");
# Loop through the output.
foreach my $line (@df) {
}
#
-## This function is responsible for downloading the configured IDS ruleset.
+## This function is responsible for downloading the configured IDS rulesets or if no one is specified
+## all configured rulesets will be downloaded.
##
-## * At first it obtains from the stored rules settings which ruleset should be downloaded.
-## * The next step is to get the download locations for all available rulesets.
-## * After that, the function will check if an upstream proxy should be used and grab the settings.
-## * The last step will be to generate the final download url, by obtaining the URL for the desired
-## ruleset, add the settings for the upstream proxy and final grab the rules tarball from the server.
+## * At first it gathers all configured ruleset providers, initialize the downloader and sets an
+## upstream proxy if configured.
+## * After that, the given ruleset or in case all rulesets should be downloaded, it will determine wether it
+## is enabled or not.
+## * The next step will be to generate the final download url, by obtaining the URL for the desired
+## ruleset, add the settings for the upstream proxy.
+## * Finally the function will grab all the rules files or tarballs from the servers.
#
-sub downloadruleset {
- # Get rules settings.
- my %rulessettings=();
- &General::readhash("$rules_settings_file", \%rulessettings);
+sub downloadruleset ($) {
+ my ($provider) = @_;
+
+ # If no provider is given default to "all".
+ $provider //= 'all';
+
+ # Hash to store the providers and access id's, for which rules should be downloaded.
+ my %sheduled_providers = ();
+
+ # Get used provider settings.
+ my %used_providers = ();
+ &General::readhasharray("$providers_settings_file", \%used_providers);
# Check if a ruleset has been configured.
- unless($rulessettings{'RULES'}) {
+ unless(%used_providers) {
# Log that no ruleset has been configured and abort.
- &_log_to_syslog("No ruleset source has been configured.");
+ &_log_to_syslog("No ruleset provider has been configured.");
# Return "1".
return 1;
}
- # Get all available ruleset locations.
- my %rulesetsources=();
- &General::readhash($rulesetsourcesfile, \%rulesetsources);
-
# Read proxysettings.
my %proxysettings=();
&General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
# Check if an upstream proxy is configured.
if ($proxysettings{'UPSTREAM_PROXY'}) {
- my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
my $proxy_url;
- # Check if we got a peer.
- if ($peer) {
- $proxy_url = "http://";
-
- # Check if the proxy requires authentication.
- if (($proxysettings{'UPSTREAM_USER'}) && ($proxysettings{'UPSTREAM_PASSWORD'})) {
- $proxy_url .= "$proxysettings{'UPSTREAM_USER'}\:$proxysettings{'UPSTREAM_PASSWORD'}\@";
- }
-
- # Add proxy server address and port.
- $proxy_url .= "$peer\:$peerport";
- } else {
- # Log error message and break.
- &_log_to_syslog("Could not proper configure the proxy server access.");
+ $proxy_url = "http://";
- # Return "1" - false.
- return 1;
+ # Check if the proxy requires authentication.
+ if (($proxysettings{'UPSTREAM_USER'}) && ($proxysettings{'UPSTREAM_PASSWORD'})) {
+ $proxy_url .= "$proxysettings{'UPSTREAM_USER'}\:$proxysettings{'UPSTREAM_PASSWORD'}\@";
}
+ # Add proxy server address and port.
+ $proxy_url .= $proxysettings{'UPSTREAM_PROXY'};
+
# Setup proxy settings.
$downloader->proxy(['http', 'https'], $proxy_url);
}
- # Grab the right url based on the configured vendor.
- my $url = $rulesetsources{$rulessettings{'RULES'}};
+ # Loop through the hash of configured providers.
+ foreach my $id ( keys %used_providers ) {
+ # Skip providers which are not enabled.
+ next if ($used_providers{$id}[3] ne "enabled");
- # Check if the vendor requires an oinkcode and add it if needed.
- $url =~ s/\<oinkcode\>/$rulessettings{'OINKCODE'}/g;
+ # Obtain the provider handle.
+ my $provider_handle = $used_providers{$id}[0];
- # Abort if no url could be determined for the vendor.
- unless ($url) {
- # Log error and abort.
- &_log_to_syslog("Unable to gather a download URL for the selected ruleset.");
- return 1;
+ # Handle update off all providers.
+ if (($provider eq "all") || ($provider_handle eq "$provider")) {
+ # Add provider handle and it's id to the hash of sheduled providers.
+ $sheduled_providers{$provider_handle} = $id;
+ }
}
- # Pass the requrested url to the downloader.
- my $request = HTTP::Request->new(HEAD => $url);
+ # Loop through the hash of sheduled providers.
+ foreach my $provider ( keys %sheduled_providers) {
+ # Grab the download url for the provider.
+ my $url = $IDS::Ruleset::Providers{$provider}{'dl_url'};
- # Accept the html header.
- $request->header('Accept' => 'text/html');
+ # Check if the provider requires a subscription.
+ if ($IDS::Ruleset::Providers{$provider}{'requires_subscription'} eq "True") {
+ # Grab the previously stored access id for the provider from hash.
+ my $id = $sheduled_providers{$provider};
- # Perform the request and fetch the html header.
- my $response = $downloader->request($request);
+ # Grab the subscription code.
+ my $subscription_code = $used_providers{$id}[1];
- # Check if there was any error.
- unless ($response->is_success) {
- # Obtain error.
- my $error = $response->content;
+ # Add the subscription code to the download url.
+ $url =~ s/\<subscription_code\>/$subscription_code/g;
- # Log error message.
- &_log_to_syslog("Unable to download the ruleset. \($error\)");
+ }
- # Return "1" - false.
- return 1;
- }
+ # Abort if no url could be determined for the provider.
+ unless ($url) {
+ # Log error and abort.
+ &_log_to_syslog("Unable to gather a download URL for the selected ruleset provider.");
+ return 1;
+ }
- # Assign the fetched header object.
- my $header = $response->headers;
+ # Variable to store the filesize of the remote object.
+ my $remote_filesize;
- # Grab the remote file size from the object and store it in the
- # variable.
- my $remote_filesize = $header->content_length;
+ # The sourcfire (snort rules) does not allow to send "HEAD" requests, so skip this check
+ # for this webserver.
+ #
+ # Check if the ruleset source contains "snort.org".
+ unless ($url =~ /\.snort\.org/) {
+ # Pass the requrested url to the downloader.
+ my $request = HTTP::Request->new(HEAD => $url);
- # Load perl module to deal with temporary files.
- use File::Temp;
+ # Accept the html header.
+ $request->header('Accept' => 'text/html');
- # Generate temporay file name, located in "/var/tmp" and with a suffix of ".tar.gz".
- my $tmp = File::Temp->new( SUFFIX => ".tar.gz", DIR => "/var/tmp/", UNLINK => 0 );
- my $tmpfile = $tmp->filename();
+ # Perform the request and fetch the html header.
+ my $response = $downloader->request($request);
- # Pass the requested url to the downloader.
- my $request = HTTP::Request->new(GET => $url);
+ # Check if there was any error.
+ unless ($response->is_success) {
+ # Obtain error.
+ my $error = $response->status_line();
- # Perform the request and save the output into the tmpfile.
- my $response = $downloader->request($request, $tmpfile);
+ # Log error message.
+ &_log_to_syslog("Unable to download the ruleset. \($error\)");
- # Check if there was any error.
- unless ($response->is_success) {
- # Obtain error.
- my $error = $response->content;
+ # Return "1" - false.
+ return 1;
+ }
- # Log error message.
- &_log_to_syslog("Unable to download the ruleset. \($error\)");
+ # Assign the fetched header object.
+ my $header = $response->headers();
- # Return "1" - false.
- return 1;
- }
+ # Grab the remote file size from the object and store it in the
+ # variable.
+ $remote_filesize = $header->content_length;
+ }
- # Load perl stat module.
- use File::stat;
+ # Load perl module to deal with temporary files.
+ use File::Temp;
+
+ # Generate temporary file name, located in "/var/tmp" and with a suffix of ".tmp".
+ my $tmp = File::Temp->new( SUFFIX => ".tmp", DIR => "/var/tmp/", UNLINK => 0 );
+ my $tmpfile = $tmp->filename();
+
+ # Pass the requested url to the downloader.
+ my $request = HTTP::Request->new(GET => $url);
- # Perform stat on the tmpfile.
- my $stat = stat($tmpfile);
+ # Perform the request and save the output into the tmpfile.
+ my $response = $downloader->request($request, $tmpfile);
- # Grab the local filesize of the downloaded tarball.
- my $local_filesize = $stat->size;
+ # Check if there was any error.
+ unless ($response->is_success) {
+ # Obtain error.
+ my $error = $response->content;
- # Check if both file sizes match.
- unless ($remote_filesize eq $local_filesize) {
- # Log error message.
- &_log_to_syslog("Unable to completely download the ruleset. ");
- &_log_to_syslog("Only got $local_filesize Bytes instead of $remote_filesize Bytes. ");
+ # Log error message.
+ &_log_to_syslog("Unable to download the ruleset. \($error\)");
+
+ # Return "1" - false.
+ return 1;
+ }
+
+ # Load perl stat module.
+ use File::stat;
+
+ # Perform stat on the tmpfile.
+ my $stat = stat($tmpfile);
+
+ # Grab the local filesize of the downloaded tarball.
+ my $local_filesize = $stat->size;
+
+ # Check if both file sizes match.
+ if (($remote_filesize) && ($remote_filesize ne $local_filesize)) {
+ # Log error message.
+ &_log_to_syslog("Unable to completely download the ruleset. ");
+ &_log_to_syslog("Only got $local_filesize Bytes instead of $remote_filesize Bytes. ");
+
+ # Delete temporary file.
+ unlink("$tmpfile");
+
+ # Return "1" - false.
+ return 1;
+ }
+
+ # Genarate and assign file name and path to store the downloaded rules file.
+ my $dl_rulesfile = &_get_dl_rulesfile($provider);
+
+ # Check if a file name could be obtained.
+ unless ($dl_rulesfile) {
+ # Log error message.
+ &_log_to_syslog("Unable to store the downloaded rules file. ");
+
+ # Delete downloaded temporary file.
+ unlink("$tmpfile");
+
+ # Return "1" - false.
+ }
+
+ # Load file copy module, which contains the move() function.
+ use File::Copy;
+
+ # Overwrite the may existing rulefile or tarball with the downloaded one.
+ move("$tmpfile", "$dl_rulesfile");
# Delete temporary file.
unlink("$tmpfile");
- # Return "1" - false.
- return 1;
+ # Set correct ownership for the tarball.
+ set_ownership("$dl_rulesfile");
}
- # Load file copy module, which contains the move() function.
- use File::Copy;
-
- # Overwrite existing rules tarball with the new downloaded one.
- move("$tmpfile", "$rulestarball");
-
# If we got here, everything worked fine. Return nothing.
return;
}
#
-## A tiny wrapper function to call the oinkmaster script.
+## Function to extract a given ruleset.
+#
+sub extractruleset ($) {
+ my ($provider) = @_;
+
+ # Load perl module to deal with archives.
+ use Archive::Tar;
+
+ # Load perl module to deal with files and path.
+ use File::Basename;
+
+ # Get full path and downloaded rulesfile for the given provider.
+ my $tarball = &_get_dl_rulesfile($provider);
+
+ # Check if the file exists.
+ unless (-f $tarball) {
+ &_log_to_syslog("Could not extract ruleset file: $tarball");
+
+ # Return nothing.
+ return;
+ }
+
+ # Check if the temporary directories exist, otherwise create them.
+ mkdir("$tmp_directory") unless (-d "$tmp_directory");
+ mkdir("$tmp_rules_directory") unless (-d "$tmp_rules_directory");
+ mkdir("$tmp_conf_directory") unless (-d "$tmp_conf_directory");
+
+ # Initialize the tar module.
+ my $tar = Archive::Tar->new($tarball);
+
+ # Get the filelist inside the tarball.
+ my @packed_files = $tar->list_files;
+
+ # Loop through the filelist.
+ foreach my $packed_file (@packed_files) {
+ my $destination;
+
+ # Splitt the packed file into chunks.
+ my $file = fileparse($packed_file);
+
+ # Handle msg-id.map file.
+ if ("$file" eq "sid-msg.map") {
+ # Set extract destination to temporary config_dir.
+ $destination = "$tmp_conf_directory/$provider\-sid-msg.map";
+ # Handle classification.conf
+ } elsif ("$file" eq "classification.config") {
+ # Set extract destination to temporary config_dir.
+ $destination = "$tmp_conf_directory/$provider\-classification.config";
+ # Handle rules files.
+ } elsif ($file =~ m/\.rules$/) {
+ my $rulesfilename;
+
+ # Splitt the filename into chunks.
+ my @filename = split("-", $file);
+
+ # Reverse the array.
+ @filename = reverse(@filename);
+
+ # Get the amount of elements in the array.
+ my $elements = @filename;
+
+ # Remove last element of the hash.
+ # It contains the vendor name, which will be replaced.
+ if ($elements >= 3) {
+ # Remove last element from hash.
+ pop(@filename);
+ }
+
+ # Check if the last element of the filename does not
+ # contain the providers name.
+ if ($filename[-1] ne "$provider") {
+ # Add provider name as last element.
+ push(@filename, $provider);
+ }
+
+ # Reverse the array back.
+ @filename = reverse(@filename);
+
+ # Generate the name for the rulesfile.
+ $rulesfilename = join("-", @filename);
+
+ # Set extract destination to temporaray rules_dir.
+ $destination = "$tmp_rules_directory/$rulesfilename";
+ } else {
+ # Skip all other files.
+ next;
+ }
+
+ # Extract the file to the temporary directory.
+ $tar->extract_file("$packed_file", "$destination");
+ }
+}
+
+#
+## A wrapper function to call the oinkmaster script, setup the rules structues and
+## call the functions to merge the additional config files. (classification, sid-msg, etc.).
#
sub oinkmaster () {
+ # Load perl module for file copying.
+ use File::Copy;
+
# Check if the files in rulesdir have the correct permissions.
&_check_rulesdir_permissions();
- # Cleanup the rules directory before filling it with the new rulest.
+ # Cleanup the rules directory before filling it with the new rulests.
&_cleanup_rulesdir();
+ # Get all enabled providers.
+ my @enabled_providers = &get_enabled_providers();
+
+ # Loop through the array of enabled providers.
+ foreach my $provider (@enabled_providers) {
+ # Omit the type (dl_type) of the stored ruleset.
+ my $type = $IDS::Ruleset::Providers{$provider}{'dl_type'};
+
+ # Handle the different ruleset types.
+ if ($type eq "archive") {
+ # Call the extractruleset function.
+ &extractruleset($provider);
+ } elsif ($type eq "plain") {
+ # Generate filename and full path for the stored rulesfile.
+ my $dl_rulesfile = &_get_dl_rulesfile($provider);
+
+ # Generate destination filename an full path.
+ my $destination = "$tmp_rules_directory/$provider\-ruleset.rules";
+
+ # Copy the file into the temporary rules directory.
+ copy($dl_rulesfile, $destination);
+ } else {
+ # Skip unknown type.
+ next;
+ }
+ }
+
# Load perl module to talk to the kernel syslog.
use Sys::Syslog qw(:DEFAULT setlogsock);
openlog('oinkmaster', 'cons,pid', 'user');
# Call oinkmaster to generate ruleset.
- open(OINKMASTER, "/usr/local/bin/oinkmaster.pl -v -s -u file://$rulestarball -C $settingsdir/oinkmaster.conf -o $rulespath|") or die "Could not execute oinkmaster $!\n";
+ open(OINKMASTER, "/usr/local/bin/oinkmaster.pl -s -u dir://$tmp_rules_directory -C $settingsdir/oinkmaster.conf -o $rulespath 2>&1 |") or die "Could not execute oinkmaster $!\n";
# Log output of oinkmaster to syslog.
while(<OINKMASTER>) {
# Close the log handle.
closelog();
+
+ # Call function to merge the classification files.
+ &merge_classifications(@enabled_providers);
+
+ # Call function to merge the sid to message mapping files.
+ &merge_sid_msg(@enabled_providers);
+
+ # Cleanup temporary directory.
+ &cleanup_tmp_directory();
+}
+
+#
+## Function to merge the classifications for a given amount of providers and write them
+## to the classifications file.
+#
+sub merge_classifications(@) {
+ my @providers = @_;
+
+ # Hash to store all collected classifications.
+ my %classifications = ();
+
+ # Loop through the given array of providers.
+ foreach my $provider (@providers) {
+ # Generate full path to classification file.
+ my $classification_file = "$tmp_conf_directory/$provider\-classification.config";
+
+ # Skip provider if no classification file exists.
+ next unless (-f "$classification_file");
+
+ # Open the classification file.
+ open(CLASSIFICATION, $classification_file) or die "Could not open file $classification_file. $!\n";
+
+ # Loop through the file content.
+ while(<CLASSIFICATION>) {
+ # Parse the file and grab the classification details.
+ if ($_ =~/.*config classification\: (.*)/) {
+ # Split the grabbed details.
+ my ($short_name, $short_desc, $priority) = split("\,", $1);
+
+ # Check if the grabbed classification is allready known and the priority value is greater
+ # than the stored one (which causes less priority in the IDS).
+ if (($classifications{$short_name}) && ($classifications{$short_name}[1] >= $priority)) {
+ #Change the priority value to the stricter one.
+ $classifications{$short_name} = [ "$classifications{$short_name}[0]", "$priority" ];
+ } else {
+ # Add the classification to the hash.
+ $classifications{$short_name} = [ "$short_desc", "$priority" ];
+ }
+ }
+ }
+
+ # Close the file.
+ close(CLASSIFICATION);
+ }
+
+ # Open classification file for writing.
+ open(FILE, ">", "$classification_file") or die "Could not write to $classification_file. $!\n";
+
+ # Print notice about autogenerated file.
+ print FILE "#Autogenerated file. Any custom changes will be overwritten!\n\n";
+
+ # Sort and loop through the hash of classifications.
+ foreach my $key (sort keys %classifications) {
+ # Assign some nice variable names for the items.
+ my $short_name = $key;
+ my $short_desc = $classifications{$key}[0];
+ my $priority = $classifications{$key}[1];
+
+ # Write the classification to the file.
+ print FILE "config classification: $short_name,$short_desc,$priority\n";
+ }
+
+ # Close file handle.
+ close(FILE);
+}
+
+#
+## Function to merge the "sid to message mapping" files of various given providers.
+#
+sub merge_sid_msg (@) {
+ my @providers = @_;
+
+ # Hash which contains all the sid to message mappings.
+ my %mappings = ();
+
+ # Loop through the array of given providers.
+ foreach my $provider (@providers) {
+ # Generate full path and filename.
+ my $sid_msg_file = "$tmp_conf_directory/$provider\-sid-msg.map";
+
+ # Skip provider if no sid to msg mapping file for this provider exists.
+ next unless (-f $sid_msg_file);
+
+ # Open the file.
+ open(MAPPING, $sid_msg_file) or die "Could not open $sid_msg_file. $!\n";
+
+ # Loop through the file content.
+ while (<MAPPING>) {
+ # Remove newlines.
+ chomp($_);
+
+ # Skip lines which do not start with a number,
+ next unless ($_ =~ /^\d+/);
+
+ # Split line content and assign it to an array.
+ my @line = split(/ \|\| /, $_);
+
+ # Grab the first element (and remove it) from the line array.
+ # It contains the sid.
+ my $sid = shift(@line);
+
+ # Store the grabbed sid and the remain array as hash value.
+ # It still contains the messages, references etc.
+ $mappings{$sid} = [@line];
+ }
+
+ # Close file handle.
+ close(MAPPING);
+ }
+
+ # Open mappings file for writing.
+ open(FILE, ">", $sid_msg_file) or die "Could not write $sid_msg_file. $!\n";
+
+ # Write notice about autogenerated file.
+ print FILE "#Autogenerated file. Any custom changes will be overwritten!\n\n";
+
+ # Loop through the hash of mappings.
+ foreach my $sid ( sort keys %mappings) {
+ # Grab data for the sid.
+ my @data = @{$mappings{$sid}};
+
+ # Add the sid to the data array.
+ unshift(@data, $sid);
+
+ # Generate line.
+ my $line = join(" \|\| ", @data);
+
+ print FILE "$line\n";
+
+ }
+
+ # Close file handle.
+ close(FILE);
+}
+
+#
+## A very tiny function to move an extracted ruleset from the temporary directory into
+## the rules directory.
+#
+sub move_tmp_ruleset() {
+ # Load perl module.
+ use File::Copy;
+
+ # Do a directory listing of the temporary directory.
+ opendir DH, $tmp_rules_directory;
+
+ # Loop over all files.
+ while(my $file = readdir DH) {
+ # Move them to the rules directory.
+ move "$tmp_rules_directory/$file" , "$rulespath/$file";
+ }
+
+ # Close directory handle.
+ closedir DH;
+}
+
+#
+## Function to cleanup the temporary IDS directroy.
+#
+sub cleanup_tmp_directory () {
+ # Load rmtree() function from file path perl module.
+ use File::Path 'rmtree';
+
+ # Delete temporary directory and all containing files.
+ rmtree([ "$tmp_directory" ]);
}
#
# Close file.
close (ERRORFILE);
+
+ # Set correct ownership for the file.
+ &set_ownership("$storederrorfile");
}
#
-## Function to get a list of all available network zones.
+## Private function to get the path and filename for a downloaded ruleset by a given provider.
#
-sub get_available_network_zones () {
- # Get netsettings.
- my %netsettings = ();
- &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
+sub _get_dl_rulesfile($) {
+ my ($provider) = @_;
- # Obtain the configuration type from the netsettings hash.
- my $config_type = $netsettings{'CONFIG_TYPE'};
+ # Gather the download type for the given provider.
+ my $dl_type = $IDS::Ruleset::Providers{$provider}{'dl_type'};
- # Hash which contains the conversation from the config mode
- # to the existing network interface names. They are stored like
- # an array.
- #
- # Mode "0" red is a modem and green
- # Mode "1" red is a netdev and green
- # Mode "2" red, green and orange
- # Mode "3" red, green and blue
- # Mode "4" red, green, blue, orange
- my %config_type_to_interfaces = (
- "0" => [ "red", "green" ],
- "1" => [ "red", "green" ],
- "2" => [ "red", "green", "orange" ],
- "3" => [ "red", "green", "blue" ],
- "4" => [ "red", "green", "blue", "orange" ]
- );
+ # Obtain the file suffix for the download file type.
+ my $suffix = $dl_type_to_suffix{$dl_type};
+
+ # Check if a suffix has been found.
+ unless ($suffix) {
+ # Abort return - nothing.
+ return;
+ }
- # Obtain and dereference the corresponding network interaces based on the read
- # network config type.
- my @network_zones = @{ $config_type_to_interfaces{$config_type} };
+ # Generate the full filename and path for the stored rules file.
+ my $rulesfile = "$dl_rules_path/$dl_rulesfile_prefix-$provider$suffix";
- # Return them.
- return @network_zones;
+ # Return the generated filename.
+ return $rulesfile;
+}
+
+#
+## Tiny function to delete the stored ruleset file or tarball for a given provider.
+#
+sub drop_dl_rulesfile ($) {
+ my ($provider) = @_;
+
+ # Gather the full path and name of the stored rulesfile.
+ my $rulesfile = &_get_dl_rulesfile($provider);
+
+ # Check if the given rulesfile exists.
+ if (-f $rulesfile) {
+ # Delete the stored rulesfile.
+ unlink($rulesfile) or die "Could not delete $rulesfile. $!\n";
+ }
}
#
# Call the suricatactrl binary and pass the "cron" command
# with the requrested interval.
- system("$suricatactrl $option $interval &>/dev/null");
+ &General::system("$suricatactrl", "$option", "$interval");
# Return "1" - True.
return 1;
} else {
# Call the suricatactrl binary and pass the requrested
# option to it.
- system("$suricatactrl $option &>/dev/null");
+ &General::system("$suricatactrl", "$option");
# Return "1" - True.
return 1;
# We only want files.
next unless (-f "$rulespath/$file");
- # Skip element if it has config as file extension.
- next if ($file =~ m/\.config$/);
+ # Skip rules file for whitelisted hosts.
+ next if ("$rulespath/$file" eq $whitelist_file);
+
+ # Skip rules file with local rules.
+ next if ("$rulespath/$file" eq $local_rules_file);
# Delete the current processed file, if not, exit this function
# and return an error message.
&General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
# Get available network zones.
- my @network_zones = &get_available_network_zones();
+ my @network_zones = &Network::get_available_network_zones();
# Temporary array to store network address and prefix of the configured
# networks.
# Loop through the array of available network zones.
foreach my $zone (@network_zones) {
- # Skip the red network - It never can be part to the home_net!
- next if($zone eq "red");
-
- # Convert current zone name into upper case.
- $zone = uc($zone);
+ # Check if the current processed zone is red.
+ if($zone eq "red") {
+ # Grab the IP-address of the red interface.
+ my $red_address = &get_red_address();
+
+ # Check if an address has been obtained.
+ if ($red_address) {
+ # Generate full network string.
+ my $red_network = join("/", $red_address, "32");
+
+ # Add the red network to the array of networks.
+ push(@networks, $red_network);
+ }
- # Generate key to access the required data from the netsettings hash.
- my $zone_netaddress = $zone . "_NETADDRESS";
- my $zone_netmask = $zone . "_NETMASK";
+ # Check if the configured RED_TYPE is static.
+ if ($netsettings{'RED_TYPE'} eq "STATIC") {
+ # Get configured and enabled aliases.
+ my @aliases = &get_aliases();
- # Obtain the settings from the netsettings hash.
- my $netaddress = $netsettings{$zone_netaddress};
- my $netmask = $netsettings{$zone_netmask};
+ # Loop through the array.
+ foreach my $alias (@aliases) {
+ # Add "/32" prefix.
+ my $network = join("/", $alias, "32");
- # Convert the subnetmask into prefix notation.
- my $prefix = &Network::convert_netmask2prefix($netmask);
+ # Add the generated network to the array of networks.
+ push(@networks, $network);
+ }
+ }
+ # Process remaining network zones.
+ } else {
+ # Convert current zone name into upper case.
+ $zone = uc($zone);
- # Generate full network string.
- my $network = join("/", $netaddress,$prefix);
+ # Generate key to access the required data from the netsettings hash.
+ my $zone_netaddress = $zone . "_NETADDRESS";
+ my $zone_netmask = $zone . "_NETMASK";
- # Check if the network is valid.
- if(&Network::check_subnet($network)) {
- # Add the generated network to the array of networks.
- push(@networks, $network);
- }
- }
+ # Obtain the settings from the netsettings hash.
+ my $netaddress = $netsettings{$zone_netaddress};
+ my $netmask = $netsettings{$zone_netmask};
- # Format home net declaration.
- my $line = "\"\[";
+ # Convert the subnetmask into prefix notation.
+ my $prefix = &Network::convert_netmask2prefix($netmask);
- # Loop through the array of networks.
- foreach my $network (@networks) {
- # Add the network to the line.
- $line = "$line" . "$network";
+ # Generate full network string.
+ my $network = join("/", $netaddress,$prefix);
- # Check if the current network was the last in the array.
- if ($network eq $networks[-1]) {
- # Close the line.
- $line = "$line" . "\]\"";
- } else {
- # Add "," for the next network.
- $line = "$line" . "\,";
+ # Check if the network is valid.
+ if(&Network::check_subnet($network)) {
+ # Add the generated network to the array of networks.
+ push(@networks, $network);
+ }
}
}
+ # Format home net declaration.
+ my $line = "\"[" . join(',', @networks) . "]\"";
+
# Open file to store the addresses of the home net.
open(FILE, ">$homenet_file") or die "Could not open $homenet_file. $!\n";
}
#
-## Function to generate and write the file for used rulefiles.
+# Function to generate and write the file which contains the configured and used DNS servers.
#
-sub write_used_rulefiles_file(@) {
- my @files = @_;
+sub generate_dns_servers_file() {
+ # Get the used DNS servers.
+ my @nameservers = &General::get_nameservers();
+
+ # Get network settings.
+ my %netsettings;
+ &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
+
+ # Format dns servers declaration.
+ my $line = "";
+
+ # Check if the system has configured nameservers.
+ if (@nameservers) {
+ # Add the GREEN address as DNS servers.
+ push(@nameservers, $netsettings{'GREEN_ADDRESS'});
+
+ # Check if a BLUE zone exists.
+ if ($netsettings{'BLUE_ADDRESS'}) {
+ # Add the BLUE address to the array of nameservers.
+ push(@nameservers, $netsettings{'BLUE_ADDRESS'});
+ }
+
+ # Generate the line which will be written to the DNS servers file.
+ $line = join(",", @nameservers);
+ } else {
+ # External net simply contains (any).
+ $line = "\$EXTERNAL_NET";
+ }
+
+ # Open file to store the used DNS server addresses.
+ open(FILE, ">$dns_servers_file") or die "Could not open $dns_servers_file. $!\n";
+
+ # Print yaml header.
+ print FILE "%YAML 1.1\n";
+ print FILE "---\n\n";
+
+ # Print notice about autogenerated file.
+ print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
+
+ # Print the generated DNS declaration to the file.
+ print FILE "DNS_SERVERS:\t\"[$line]\"\n";
+
+ # Close file handle.
+ close(FILE);
+}
+
+#
+# Function to generate and write the file which contains the HTTP_PORTS definition.
+#
+sub generate_http_ports_file() {
+ my %proxysettings;
+
+ # Read-in proxy settings
+ &General::readhash("${General::swroot}/proxy/advanced/settings", \%proxysettings);
+
+ # Check if the proxy is enabled.
+ if (( -e "${General::swroot}/proxy/enable") || (-e "${General::swroot}/proxy/enable_blue")) {
+ # Add the proxy port to the array of HTTP ports.
+ push(@http_ports, $proxysettings{'PROXY_PORT'});
+ }
+
+ # Check if the transparent mode of the proxy is enabled.
+ if ((-e "${General::swroot}/proxy/transparent") || (-e "${General::swroot}/proxy/transparent_blue")) {
+ # Add the transparent proxy port to the array of HTTP ports.
+ push(@http_ports, $proxysettings{'TRANSPARENT_PORT'});
+ }
+
+ # Format HTTP_PORTS declaration.
+ my $line = "";
+
+ # Generate line which will be written to the http ports file.
+ $line = join(",", @http_ports);
+
+ # Open file to store the HTTP_PORTS.
+ open(FILE, ">$http_ports_file") or die "Could not open $http_ports_file. $!\n";
+
+ # Print yaml header.
+ print FILE "%YAML 1.1\n";
+ print FILE "---\n\n";
+
+ # Print notice about autogenerated file.
+ print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
+
+ # Print the generated HTTP_PORTS declaration to the file.
+ print FILE "HTTP_PORTS:\t\"[$line]\"\n";
+
+ # Close file handle.
+ close(FILE);
+}
+
+#
+## Function to generate and write the file for used rulefiles file for a given provider.
+##
+## The function requires as first argument a provider handle, and as second an array with files.
+#
+sub write_used_provider_rulefiles_file($@) {
+ my ($provider, @files) = @_;
+
+ # Get the path and file for the provider specific used rulefiles file.
+ my $used_provider_rulesfile_file = &get_used_provider_rulesfile_file($provider);
# Open file for used rulefiles.
- open (FILE, ">$used_rulefiles_file") or die "Could not write to $used_rulefiles_file. $!\n";
+ open (FILE, ">$used_provider_rulesfile_file") or die "Could not write to $used_provider_rulesfile_file. $!\n";
# Write yaml header to the file.
print FILE "%YAML 1.1\n";
# Write header to file.
print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
- # Allways use the whitelist.
- print FILE " - whitelist.rules\n";
-
# Loop through the array of given files.
foreach my $file (@files) {
# Check if the given filename exists and write it to the file of used rulefiles.
close(FILE);
}
+#
+## Function to write the main file for provider rulesfiles inclusions.
+##
+## This function requires an array of provider handles.
+#
+sub write_main_used_rulefiles_file (@) {
+ my (@providers) = @_;
+
+ # Call function to write the static rulefiles file.
+ &_write_static_rulefiles_file();
+
+ # Open file for used rulefils inclusion.
+ open (FILE, ">", "$suricata_used_providers_file") or die "Could not write to $suricata_used_providers_file. $!\n";
+
+ # Write yaml header to the file.
+ print FILE "%YAML 1.1\n";
+ print FILE "---\n\n";
+
+ # Write header to file.
+ print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
+
+ # Loop through the list of given providers.
+ foreach my $provider (@providers) {
+ # Call function to get the providers used rulefiles file.
+ my $filename = &get_used_provider_rulesfile_file($provider);
+
+ # Print the provider to the file.
+ print FILE "include\: $filename\n";
+ }
+
+ # Always include the file which hold the static includes.
+ print FILE "include\: $suricata_static_rulefiles_file\n";
+
+ # Close the filehandle after writing.
+ close(FILE);
+}
+
+sub _write_static_rulefiles_file () {
+ # Open file.
+ open (FILE, ">", $suricata_static_rulefiles_file) or die "Could not write to $suricata_static_rulefiles_file. $!\n";
+
+ # Write yaml header to the file.
+ print FILE "%YAML 1.1\n";
+ print FILE "---\n\n";
+
+ # Write notice about autogenerated file.
+ print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
+
+ # Loop through the array of static included rulesfiles.
+ foreach my $file (@static_included_rulefiles) {
+ # Check if the file exists.
+ if (-f "$rulespath/$file") {
+ # Write the rulesfile name to the file.
+ print FILE " - $file\n";
+ }
+ }
+
+ # Close the file handle
+ close(FILE);
+}
+
+#
+## Tiny function to generate the full path and name for the used_provider_rulesfile file of a given provider.
+#
+sub get_used_provider_rulesfile_file ($) {
+ my ($provider) = @_;
+
+ my $filename = "$settingsdir/suricata\-$provider\-used\-rulefiles.yaml";
+
+ # Return the gernerated file.
+ return $filename;
+}
+
#
## Function to generate and write the file for modify the ruleset.
#
-sub write_modify_sids_file($) {
- my ($ruleaction) = @_;
+sub write_modify_sids_file() {
+ # Get configured settings.
+ my %idssettings=();
+ &General::readhash("$ids_settings_file", \%idssettings);
# Open modify sid's file for writing.
open(FILE, ">$modify_sids_file") or die "Could not write to $modify_sids_file. $!\n";
print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
# Check if the traffic only should be monitored.
- unless($ruleaction eq "alert") {
- # Tell oinkmaster to switch all rules from alert to drop.
- print FILE "modifysid \* \"alert\" \| \"drop\"\n";
- }
+ unless($idssettings{'MONITOR_TRAFFIC_ONLY'} eq 'on') {
+ # Suricata is in IPS mode, which means that the rule actions have to be changed
+ # from 'alert' to 'drop', however not all rules should be changed. Some rules
+ # exist purely to set a flowbit which is used to convey other information, such
+ # as a specific type of file being downloaded, to other rulewhich then check for
+ # malware in that file. Rules which fall into the first category should stay as
+ # alert since not all flows of that type contain malware.
+
+ # These types of rulesfiles contain meta-data which gives the action that should
+ # be used when in IPS mode. Do the following:
+ #
+ # 1. Disable all rules and set the action to 'drop'
+ # 2. Set the action back to 'alert' if the rule contains 'flowbits:noalert;'
+ # This should give rules not in the policy a reasonable default if the user
+ # manually enables them.
+ # 3. Enable rules and set actions according to the meta-data strings.
+
+ my $policy = 'balanced'; # Placeholder to allow policy to be changed.
+
+ print FILE <<END;
+modifysid * "^#(?:alert|drop)(.+policy $policy-ips alert)" | "alert\${1}"
+modifysid * "^#(?:alert|drop)(.+policy $policy-ips drop)" | "drop\${1}"
+modifysid * "^(#?)(?:alert|drop)" | "\${1}drop"
+modifysid * "^(#?)drop(.+flowbits:noalert;)" | "\${1}alert\${2}"
+END
+ }
# Close file handle.
close(FILE);
}
+#
+## Function to get the ruleset date for a given provider.
+##
+## The function simply return the creation date in a human read-able format
+## of the stored providers rulesfile.
+#
+sub get_ruleset_date($) {
+ my ($provider) = @_;
+
+ # Load neccessary perl modules for file stat and to format the timestamp.
+ use File::stat;
+ use POSIX qw( strftime );
+
+ # Get the stored rulesfile for this provider.
+ my $stored_rulesfile = &_get_dl_rulesfile($provider);
+
+ # Call stat on the rulestarball.
+ my $stat = stat("$stored_rulesfile");
+
+ # Get timestamp the file creation.
+ my $mtime = $stat->mtime;
+
+ # Convert into human read-able format.
+ my $date = strftime('%Y-%m-%d %H:%M:%S', localtime($mtime));
+
+ # Return the date.
+ return $date;
+}
+
#
## Function to gather the version of suricata.
#
# Remove newlines.
chomp($version_string);
- # Grab the version from the version string.
+ # Grab the version from the version string.
$version_string =~ /([0-9]+([.][0-9]+)+)/;
# Splitt the version into single chunks.
} else {
# Return the full version string.
return "$major_ver.$minor_ver.$patchlevel";
- }
+ }
+}
+
+#
+## Function to generate the rules file with whitelisted addresses.
+#
+sub generate_ignore_file() {
+ my %ignored = ();
+
+ # SID range 1000000-1999999 Reserved for Local Use
+ # Put your custom rules in this range to avoid conflicts
+ my $sid = 1500000;
+
+ # Read-in ignoredfile.
+ &General::readhasharray($IDS::ignored_file, \%ignored);
+
+ # Open ignorefile for writing.
+ open(FILE, ">$IDS::whitelist_file") or die "Could not write to $IDS::whitelist_file. $!\n";
+
+ # Config file header.
+ print FILE "# Autogenerated file.\n";
+ print FILE "# All user modifications will be overwritten.\n\n";
+
+ # Add all user defined addresses to the whitelist.
+ #
+ # Check if the hash contains any elements.
+ if (keys (%ignored)) {
+ # Loop through the entire hash and write the host/network
+ # and remark to the ignore file.
+ while ( (my $key) = each %ignored) {
+ my $address = $ignored{$key}[0];
+ my $remark = $ignored{$key}[1];
+ my $status = $ignored{$key}[2];
+
+ # Check if the status of the entry is "enabled".
+ if ($status eq "enabled") {
+ # Check if the address/network is valid.
+ if ((&General::validip($address)) || (&General::validipandmask($address))) {
+ # Write rule line to the file to pass any traffic from this IP
+ print FILE "pass ip $address any -> any any (msg:\"pass all traffic from/to $address\"\; sid:$sid\;)\n";
+
+ # Increment sid.
+ $sid++;
+ }
+ }
+ }
+ }
+
+ close(FILE);
+}
+
+#
+## Function to set correct ownership for single files and directories.
+#
+
+sub set_ownership($) {
+ my ($target) = @_;
+
+ # User and group of the WUI.
+ my $uname = "nobody";
+ my $grname = "nobody";
+
+ # The chown function implemented in perl requies the user and group as nummeric id's.
+ my $uid = getpwnam($uname);
+ my $gid = getgrnam($grname);
+
+ # Check if the given target exists.
+ unless ($target) {
+ # Stop the script and print error message.
+ die "The $target does not exist. Cannot change the ownership!\n";
+ }
+
+ # Check weather the target is a file or directory.
+ if (-f $target) {
+ # Change ownership ot the single file.
+ chown($uid, $gid, "$target");
+ } elsif (-d $target) {
+ # Do a directory listing.
+ opendir(DIR, $target) or die $!;
+ # Loop through the direcory.
+ while (my $file = readdir(DIR)) {
+
+ # We only want files.
+ next unless (-f "$target/$file");
+
+ # Set correct ownership for the files.
+ chown($uid, $gid, "$target/$file");
+ }
+
+ closedir(DIR);
+
+ # Change ownership of the directory.
+ chown($uid, $gid, "$target");
+ }
+}
+
+#
+## Function to read-in the aliases file and returns all configured and enabled aliases.
+#
+sub get_aliases() {
+ # Location of the aliases file.
+ my $aliases_file = "${General::swroot}/ethernet/aliases";
+
+ # Array to store the aliases.
+ my @aliases;
+
+ # Check if the file is empty.
+ if (-z $aliases_file) {
+ # Abort nothing to do.
+ return;
+ }
+
+ # Open the aliases file.
+ open(ALIASES, $aliases_file) or die "Could not open $aliases_file. $!\n";
+
+ # Loop through the file content.
+ while (my $line = <ALIASES>) {
+ # Remove newlines.
+ chomp($line);
+
+ # Splitt line content into single chunks.
+ my ($address, $state, $remark) = split(/\,/, $line);
+
+ # Check if the state of the current processed alias is "on".
+ if ($state eq "on") {
+ # Check if the address is valid.
+ if(&Network::check_ip_address($address)) {
+ # Add the alias to the array of aliases.
+ push(@aliases, $address);
+ }
+ }
+ }
+
+ # Close file handle.
+ close(ALIASES);
+
+ # Return the array.
+ return @aliases;
+}
+
+#
+## Function to grab the current assigned IP-address on red.
+#
+sub get_red_address() {
+ # File, which contains the current IP-address of the red interface.
+ my $file = "${General::swroot}/red/local-ipaddress";
+
+ # Check if the file exists.
+ if (-e $file) {
+ # Open the given file.
+ open(FILE, "$file") or die "Could not open $file.";
+
+ # Obtain the address from the first line of the file.
+ my $address = <FILE>;
+
+ # Close filehandle
+ close(FILE);
+
+ # Remove newlines.
+ chomp $address;
+
+ # Check if the grabbed address is valid.
+ if (&General::validip($address)) {
+ # Return the address.
+ return $address;
+ }
+ }
+
+ # Return nothing.
+ return;
+}
+
+#
+## Function to get the used rules files of a given provider.
+#
+sub read_used_provider_rulesfiles($) {
+ my ($provider) = @_;
+
+ # Array to store the used rulefiles.
+ my @used_rulesfiles = ();
+
+ # Get the used rulesefile file for the provider.
+ my $rulesfile_file = &get_used_provider_rulesfile_file($provider);
+
+ # Check if the used rulesfile is empty.
+ unless (-z $rulesfile_file) {
+ # Open the file or used rulefiles and read-in content.
+ open(FILE, $rulesfile_file) or die "Could not open $rulesfile_file. $!\n";
+
+ while (<FILE>) {
+ # Assign the current line to a nice variable.
+ my $line = $_;
+
+ # Remove newlines.
+ chomp($line);
+
+ # Skip comments.
+ next if ($line =~ /\#/);
+
+ # Skip blank lines.
+ next if ($line =~ /^\s*$/);
+
+ # Gather the rulefile.
+ if ($line =~ /.*- (.*)/) {
+ my $rulefile = $1;
+
+ # Add the rulefile to the array of used rulesfiles.
+ push(@used_rulesfiles, $rulefile);
+ }
+ }
+
+ # Close the file.
+ close(FILE);
+ }
+
+ # Return the array of used rulesfiles.
+ return @used_rulesfiles;
+}
+
+#
+## Function to write the lock file for locking the WUI, while
+## the autoupdate script runs.
+#
+sub lock_ids_page() {
+ # Call subfunction to create the file.
+ &create_empty_file($ids_page_lock_file);
+}
+
+#
+## Function to release the lock of the WUI, again.
+#
+sub unlock_ids_page() {
+ # Delete lock file.
+ unlink($ids_page_lock_file);
}
1;
projects / people / stevee / ipfire-2.x.git / blobdiff