}
#
-## This function is responsible for downloading the configured snort ruleset.
+## This function is responsible for downloading the configured IDS ruleset.
##
-## * At first it obtains from the stored snortsettings which ruleset should 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.
#
sub downloadruleset {
- # Get snort settings.
- my %snortsettings=();
- &General::readhash("$settingsdir/settings", \%snortsettings);
+ # Get rules settings.
+ my %rulessettings=();
+ &General::readhash("$rules_settings_file", \%rulessettings);
# Check if a ruleset has been configured.
- unless($snortsettings{'RULES'}) {
+ unless($rulessettings{'RULES'}) {
# Log that no ruleset has been configured and abort.
&_log_to_syslog("No ruleset source has been configured.");
}
# Setup proxy settings.
- $downloader->proxy('http', $proxy_url);
+ $downloader->proxy(['http', 'https'], $proxy_url);
}
# Grab the right url based on the configured vendor.
- my $url = $rulesetsources{$snortsettings{'RULES'}};
+ my $url = $rulesetsources{$rulessettings{'RULES'}};
# Check if the vendor requires an oinkcode and add it if needed.
- $url =~ s/\<oinkcode\>/$snortsettings{'OINKCODE'}/g;
+ $url =~ s/\<oinkcode\>/$rulessettings{'OINKCODE'}/g;
# Abort if no url could be determined for the vendor.
unless ($url) {
my ($ruleaction) = @_;
# Open modify sid's file for writing.
- open(FILE, ">$IDS::modify_sids_file") or die "Could not write to $IDS::modify_sids_file. $!\n";
+ open(FILE, ">$modify_sids_file") or die "Could not write to $modify_sids_file. $!\n";
# Write file header.
print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
close(FILE);
}
+#
+## Function to gather the version of suricata.
+#
+sub get_suricata_version($) {
+ my ($format) = @_;
+
+ # Execute piped suricata command and return the version information.
+ open(SURICATA, "suricata -V |") or die "Couldn't execute program: $!";
+
+ # Grab and store the output of the piped program.
+ my $version_string = <SURICATA>;
+
+ # Close pipe.
+ close(SURICATA);
+
+ # Remove newlines.
+ chomp($version_string);
+
+ # Grab the version from the version string.
+ $version_string =~ /([0-9]+([.][0-9]+)+)/;
+
+ # Splitt the version into single chunks.
+ my ($major_ver, $minor_ver, $patchlevel) = split(/\./, $1);
+
+ # Check and return the requested version sheme.
+ if ($format eq "major") {
+ # Return the full version.
+ return "$major_ver";
+ } elsif ($format eq "minor") {
+ # Return the major and minor part.
+ return "$major_ver.$minor_ver";
+ } 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");
+ }
+}
1;
projects / ipfire-2.x.git / blobdiff