html/cgi-bin/ids.cgi

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2007-2015  IPFire Team  <info@ipfire.org>                     #
   6 #                                                                             #
   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.                                         #
  11 #                                                                             #
  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.                                #
  16 #                                                                             #
  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/>.       #
  19 #                                                                             #
  20 ###############################################################################
  21
  22 use strict;
  23
  24 # enable only the following on debugging purpose
  25 #use warnings;
  26 #use CGI::Carp 'fatalsToBrowser';
  27
  28 require '/var/ipfire/general-functions.pl';
  29 require "${General::swroot}/lang.pl";
  30 require "${General::swroot}/header.pl";
  31 require "${General::swroot}/ids-functions.pl";
  32
  33 my %color = ();
  34 my %mainsettings = ();
  35 my %netsettings = ();
  36 my %snortrules = ();
  37 my %snortsettings=();
  38 my %rulesetsources = ();
  39 my %cgiparams=();
  40 my %checked=();
  41 my %selected=();
  42
  43 # Read-in main settings, for language, theme and colors.
  44 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  45 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  46
  47 # Get netsettings.
  48 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  49
  50 my $snortrulepath = "/etc/snort/rules";
  51 my $snortusedrulefilesfile = "${General::swroot}/snort/snort-used-rulefiles.conf";
  52 my $errormessage;
  53
  54 &Header::showhttpheaders();
  55
  56 # Default settings for snort.
  57 $snortsettings{'ENABLE_SNORT'} = 'off';
  58 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
  59 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
  60 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
  61 $snortsettings{'RULES'} = '';
  62 $snortsettings{'OINKCODE'} = '';
  63
  64 #Get GUI values
  65 &Header::getcgihash(\%cgiparams);
  66
  67 # Try to determine if oinkmaster is running.
  68 my $oinkmaster_pid = `pidof oinkmaster.pl -x`;
  69
  70 # If oinkmaster is running display output.
  71 if ($oinkmaster_pid) {
  72         &working("$Lang::tr{'snort working'}");
  73 }
  74
  75 # Check if any error has been stored.
  76 if (-e $IDS::storederrorfile) {
  77         # Open file to read in the stored error message.
  78         open(FILE, "<$IDS::storederrorfile") or die "Could not open $IDS::storederrorfile. $!\n";
  79
  80         # Read the stored error message.
  81         $errormessage = <FILE>;
  82
  83         # Close file.
  84         close (FILE);
  85
  86         # Delete the file, which is now not longer required.
  87         unlink($IDS::storederrorfile);
  88 }
  89
  90
  91 ## Grab all available snort rules and store them in the snortrules hash.
  92 #
  93 # Open snort rules directory and do a directory listing.
  94 opendir(DIR, $snortrulepath) or die $!;
  95         # Loop through the direcory.
  96         while (my $file = readdir(DIR)) {
  97
  98                 # We only want files.
  99                 next unless (-f "$snortrulepath/$file");
 100
 101                 # Ignore empty files.
 102                 next if (-z "$snortrulepath/$file");
 103
 104                 # Use a regular expression to find files ending in .rules
 105                 next unless ($file =~ m/\.rules$/);
 106
 107                 # Ignore files which are not read-able.
 108                 next unless (-R "$snortrulepath/$file");
 109
 110                 # Call subfunction to read-in rulefile and add rules to
 111                 # the snortrules hash.
 112                 &readrulesfile("$file");
 113         }
 114
 115 closedir(DIR);
 116
 117 # Gather used rulefiles.
 118 #
 119 # Check if the file for activated rulefiles is not empty.
 120 if(-f $snortusedrulefilesfile) {
 121         # Open the file for used rulefile and read-in content.
 122         open(FILE, $snortusedrulefilesfile) or die "Could not open $snortusedrulefilesfile. $!\n";
 123
 124         # Read-in content.
 125         my @lines = <FILE>;
 126
 127         # Close file.
 128         close(FILE);
 129
 130         # Loop through the array.
 131         foreach my $line (@lines) {
 132                 # Remove newlines.
 133                 chomp($line);
 134
 135                 # Skip comments.
 136                 next if ($line =~ /\#/);
 137
 138                 # Skip blank  lines.
 139                 next if ($line =~ /^\s*$/);
 140
 141                 # Gather rule sid and message from the ruleline.
 142                 if ($line =~ /.*include \$RULE_PATH\/(.*)/) {
 143                         my $rulefile = $1;
 144
 145                         # Add the rulefile to the %snortrules hash.
 146                         $snortrules{$rulefile}{'Rulefile'}{'State'} = "on";
 147                 }
 148         }
 149 }
 150
 151 # Save ruleset.
 152 if ($cgiparams{'RULESET'} eq $Lang::tr{'update'}) {
 153         my $enabled_sids_file = "${General::swroot}/snort/oinkmaster-enabled-sids.conf";
 154         my $disabled_sids_file = "${General::swroot}/snort/oinkmaster-disabled-sids.conf";
 155
 156         # Arrays to store sid which should be added to the corresponding files.
 157         my @enabled_sids;
 158         my @disabled_sids;
 159         my @enabled_rulefiles;
 160
 161         # Loop through the hash of snortrules.
 162         foreach my $rulefile(keys %snortrules) {
 163                 # Check if the rulefile is enabled.
 164                 if ($cgiparams{$rulefile} eq "on") {
 165                         # Add rulefile to the array of enabled rulefiles.
 166                         push(@enabled_rulefiles, $rulefile);
 167
 168                         # Drop item from cgiparams hash.
 169                         delete $cgiparams{$rulefile};
 170                 }
 171         }
 172
 173         # Loop through the hash of snortrules.
 174         foreach my $rulefile (keys %snortrules) {
 175                 # Loop through the single rules of the rulefile.
 176                 foreach my $sid (keys %{$snortrules{$rulefile}}) {
 177                         # Skip the current sid if it is not numeric.
 178                         next unless ($sid =~ /\d+/ );
 179
 180                         # Check if there exists a key in the cgiparams hash for this sid.
 181                         if (exists($cgiparams{$sid})) {
 182                                 # Look if the rule is disabled.
 183                                 if ($snortrules{$rulefile}{$sid}{'State'} eq "off") {
 184                                         # Check if the state has been set to 'on'.
 185                                         if ($cgiparams{$sid} eq "on") {
 186                                                 # Add the sid to the enabled_sids array.
 187                                                 push(@enabled_sids, $sid);
 188
 189                                                 # Drop item from cgiparams hash.
 190                                                 delete $cgiparams{$rulefile}{$sid};
 191                                         }
 192                                 }
 193                         } else {
 194                                 # Look if the rule is enabled.
 195                                 if ($snortrules{$rulefile}{$sid}{'State'} eq "on") {
 196                                         # Check if the state is 'on' and should be disabled.
 197                                         # In this case there is no entry
 198                                         # for the sid in the cgiparams hash.
 199                                         # Add it to the disabled_sids array.
 200                                         push(@disabled_sids, $sid);
 201
 202                                         # Drop item from cgiparams hash.
 203                                         delete $cgiparams{$rulefile}{$sid};
 204                                 }
 205                         }
 206                 }
 207         }
 208
 209         # Open enabled sid's file for writing.
 210         open(FILE, ">$enabled_sids_file") or die "Could not write to $enabled_sids_file. $!\n";
 211
 212         # Write header to file.
 213         print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
 214
 215         # Check if the enabled_sids array contains any sid's.
 216         if (@enabled_sids) {
 217                 # Loop through the array of enabled sids and write them to the file.
 218                 foreach my $sid (@enabled_sids) {
 219                         print FILE "enablesid $sid\n";
 220                 }
 221         }
 222
 223         # Close file after writing.
 224         close(FILE);
 225
 226         # Open disabled sid's file for writing.
 227         open(FILE, ">$disabled_sids_file") or die "Could not write to $disabled_sids_file. $!\n";
 228
 229         # Write header to file.
 230         print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
 231
 232         # Check if the enabled_sids array contains any sid's.
 233         if (@disabled_sids) {
 234                 # Loop through the array of disabled sids and write them to the file.
 235                 foreach my $sid (@disabled_sids) {
 236                         print FILE "disablesid $sid\n";
 237                 }
 238         }
 239
 240         # Close file after writing.
 241         close(FILE);
 242
 243         # Open file for used rulefiles.
 244         open (FILE, ">$snortusedrulefilesfile") or die "Could not write to $snortusedrulefilesfile. $!\n";
 245
 246         # Write header to file.
 247         print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
 248
 249         # Check if the enabled_rulefiles array contains any entries.
 250         if (@enabled_rulefiles) {
 251                 # Loop through the array of rulefiles which should be loaded and write the to the file.
 252                 foreach my $file (@enabled_rulefiles) {
 253                         print FILE "include \$RULE_PATH/$file\n";
 254                 }
 255         }
 256
 257         # Close file after writing.
 258         close(FILE);
 259
 260         # Call oinkmaster to alter the ruleset.
 261         &oinkmaster();
 262
 263 # Download new ruleset.
 264 } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'download new ruleset'}) {
 265         # Check if the red device is active.
 266         unless (-e "${General::swroot}/red/active") {
 267                 $errormessage = $Lang::tr{'could not download latest updates'};
 268         }
 269
 270         # Check if enought free disk space is availabe.
 271         $errormessage = &IDS::checkdiskspace();
 272
 273         # Check if any errors happend.
 274         unless ($errormessage) {
 275                 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 276                 &Header::openbigbox('100%', 'left', '', $errormessage);
 277                 &Header::openbox( 'Waiting', 1,);
 278                         print <<END;
 279                                 <table>
 280                                         <tr>
 281                                                 <td><img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' /></td>
 282                                                 <td>$Lang::tr{'snort working'}</td>
 283                                         </tr>
 284                                 </table>
 285 END
 286                 &Header::closebox();
 287                 &Header::closebigbox();
 288                 &Header::closepage();
 289
 290                 # Call subfunction to download the ruleset.
 291                 $errormessage = &IDS::downloadruleset();
 292
 293                 # Check if the downloader returned an error.
 294                 if ($errormessage) {
 295                         # Call function to store the errormessage.
 296                         &IDS::log_error($errormessage);
 297
 298                         # Preform a reload of the page.
 299                         &reload();
 300                 } else {
 301                         # Call subfunction to launch oinkmaster.
 302                         &IDS::oinkmaster();
 303
 304                         # Perform a reload of the page.
 305                         &reload();
 306                 }
 307         }
 308 # Save snort settings.
 309 } elsif ($cgiparams{'SNORT'} eq $Lang::tr{'save'}) {
 310         # Prevent form name from been stored in conf file.
 311         delete $cgiparams{'SNORT'};
 312
 313         # Check if an oinkcode has been provided.
 314         if ($cgiparams{'OINKCODE'}) {
 315                 # Check if the oinkcode contains unallowed chars.
 316                 unless ($cgiparams{'OINKCODE'} =~ /^[a-z0-9]+$/) {
 317                         $errormessage = $Lang::tr{'invalid input for oink code'};
 318                 }
 319         }
 320
 321         # Go on if there are no error messages.
 322         if (!$errormessage) {
 323                 # Store settings into settings file.
 324                 &General::writehash("${General::swroot}/snort/settings", \%cgiparams);
 325
 326                 # Call snortctrl to restart snort
 327                 system('/usr/local/bin/snortctrl restart >/dev/null');
 328         }
 329 }
 330
 331 # Read-in snortsettings
 332 &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 333
 334 $checked{'ENABLE_SNORT'}{'off'} = '';
 335 $checked{'ENABLE_SNORT'}{'on'} = '';
 336 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 337 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 338 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 339 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 340 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 341 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 342 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 343 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 344 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 345 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 346 $selected{'RULES'}{'nothing'} = '';
 347 $selected{'RULES'}{'community'} = '';
 348 $selected{'RULES'}{'emerging'} = '';
 349 $selected{'RULES'}{'registered'} = '';
 350 $selected{'RULES'}{'subscripted'} = '';
 351 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 352
 353 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 354
 355 ### Java Script ###
 356 print <<END
 357 <script>
 358         // Tiny java script function to show/hide the rules
 359         // of a given category.
 360         function showhide(tblname) {
 361                 \$("#" + tblname).toggle();
 362         }
 363 </script>
 364 END
 365 ;
 366
 367 &Header::openbigbox('100%', 'left', '', $errormessage);
 368
 369 if ($errormessage) {
 370         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 371         print "<class name='base'>$errormessage\n";
 372         print "&nbsp;</class>\n";
 373         &Header::closebox();
 374 }
 375
 376 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'});
 377
 378 my $rulesdate;
 379
 380 # Check if a ruleset allready has been downloaded.
 381 if ( -f "$IDS::rulestarball"){
 382         # Call stat on the filename to obtain detailed information.
 383         my @Info = stat("$IDS::rulestarball");
 384
 385         # Grab details about the creation time.
 386         $rulesdate = localtime($Info[9]);
 387 }
 388
 389 print <<END
 390 <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 391         <table width='100%' border='0'>
 392                 <tr>
 393                         <td class='base' width='25%'>
 394                                 <input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'}>RED Snort
 395                         </td>
 396
 397                         <td class='base' width='25%'>
 398                                 <input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'}>GREEN Snort
 399                         </td>
 400
 401                         <td class='base' width='25%'>
 402 END
 403 ;
 404
 405 # Check if a blue device is configured.
 406 if ($netsettings{'BLUE_DEV'}) {
 407   print "<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />BLUE Snort\n";
 408 }
 409
 410 print "</td>\n";
 411
 412 print "<td width='25%'>\n";
 413
 414 # Check if an orange device is configured.
 415 if ($netsettings{'ORANGE_DEV'}) {
 416   print "<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />ORANGE Snort\n";
 417 }
 418
 419 print <<END
 420                         </td>
 421                 </tr>
 422
 423                 <tr>
 424                         <td colspan='4'><br><br></td>
 425                 </tr>
 426
 427                 <tr>
 428                         <td colspan='4'><b>$Lang::tr{'ids rules update'}</b></td>
 429                 </tr>
 430
 431                 <tr>
 432                         <td colspan='4'><select name='RULES'>
 433                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 434                                 <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option>
 435                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 436                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 437                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 438                         </select>
 439                         </td>
 440                 </tr>
 441
 442                 <tr>
 443                         <td colspan='4'>
 444                                 <br>$Lang::tr{'ids rules license'} <a href='https://www.snort.org/subscribe' target='_blank'>www.snort.org</a>$Lang::tr{'ids rules license1'}</br>
 445                                 <br>$Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}</br>
 446                         </td>
 447                 </tr>
 448
 449                 <tr>
 450                         <td colspan='4' nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}'></td>
 451                 </tr>
 452
 453                 <tr>
 454                         <td colspan='4' align='left'><br>
 455                                 <input type='submit' name='RULESET' value='$Lang::tr{'download new ruleset'}'>&nbsp;$Lang::tr{'updates installed'}: $rulesdate
 456                         </td>
 457
 458                 </tr>
 459         </table>
 460
 461         <br><br>
 462
 463         <table width='100%'>
 464                 <tr>
 465                         <td align='right'><input type='submit' name='SNORT' value='$Lang::tr{'save'}' /></td>
 466                 </tr>
 467         </table>
 468 </form>
 469 END
 470 ;
 471
 472 &Header::closebox();
 473
 474 &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 475         print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n";
 476
 477         # Output display table for rule files
 478         print "<table width='100%'>\n";
 479
 480         # Local variable required for java script to show/hide
 481         # rules of a rulefile.
 482         my $rulesetcount = 1;
 483
 484         # Loop over each rule file
 485         foreach my $rulefile (sort keys(%snortrules)) {
 486                 my $rulechecked = '';
 487
 488                 # Check if rule file is enabled
 489                 if ($snortrules{$rulefile}{'Rulefile'}{'State'} eq 'on') {
 490                         $rulechecked = 'CHECKED';
 491                 }
 492
 493                 # Table and rows for the rule files.
 494                 print"<tr>\n";
 495                 print"<td class='base' width='5%'>\n";
 496                 print"<input type='checkbox' name='$rulefile' $rulechecked>\n";
 497                 print"</td>\n";
 498                 print"<td class='base' width='90%'><b>$rulefile</b></td>\n";
 499                 print"<td class='base' width='5%' align='right'>\n";
 500                 print"<a href=\"javascript:showhide('ruleset$rulesetcount')\">SHOW</a>\n";
 501                 print"</td>\n";
 502                 print"</tr>\n";
 503
 504                 # Rows which will be hidden per default and will contain the single rules.
 505                 print"<tr  style='display:none' id='ruleset$rulesetcount'>\n";
 506                 print"<td colspan='3'>\n";
 507
 508                 # Local vars
 509                 my $lines;
 510                 my $rows;
 511                 my $col;
 512
 513                 # New table for the single rules.
 514                 print "<table width='100%'>\n";
 515
 516                 # Loop over rule file rules
 517                 foreach my $sid (sort {$a <=> $b} keys(%{$snortrules{$rulefile}})) {
 518                         # Local vars
 519                         my $ruledefchecked = '';
 520
 521                         # Skip rulefile itself.
 522                         next if ($sid eq "Rulefile");
 523
 524                         # If 2 rules have been displayed, start a new row
 525                         if (($lines % 2) == 0) {
 526                                 print "</tr><tr>\n";
 527
 528                                 # Increase rows by once.
 529                                 $rows++;
 530                         }
 531
 532                         # Colour lines.
 533                         if ($rows % 2) {
 534                                 $col="bgcolor='$color{'color20'}'";
 535                         } else {
 536                                 $col="bgcolor='$color{'color22'}'";
 537                         }
 538
 539                         # Set rule state
 540                         if ($snortrules{$rulefile}{$sid}{'State'} eq 'on') {
 541                                 $ruledefchecked = 'CHECKED';
 542                         }
 543
 544                         # Create rule checkbox and display rule description
 545                         print "<td class='base' width='5%' align='right' $col>\n";
 546                         print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n";
 547                         print "</td>\n";
 548                         print "<td class='base' width='45%' $col>$snortrules{$rulefile}{$sid}{'Description'}</td>";
 549
 550                         # Increment rule count
 551                         $lines++;
 552                 }
 553
 554                 # If do not have a second rule for row, create empty cell
 555                 if (($lines % 2) != 0) {
 556                         print "<td class='base'></td>";
 557                 }
 558
 559                 # Close display table
 560                 print "</tr></table></td></tr>";
 561
 562                 # Finished whith the rule file, increase count.
 563                 $rulesetcount++;
 564         }
 565
 566         # Close display table
 567         print "</table>";
 568
 569 print <<END
 570 <table width='100%'>
 571 <tr>
 572         <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'>
 573                 &nbsp; <!-- space for future online help link -->
 574         </td>
 575 </tr>
 576 </table>
 577 </form>
 578 END
 579 ;
 580 &Header::closebox();
 581 &Header::closebigbox();
 582 &Header::closepage();
 583
 584 #
 585 ## A tiny function to perform a reload of the webpage after one second.
 586 #
 587 sub reload () {
 588         print "<meta http-equiv='refresh' content='1'>\n";
 589
 590         # Stop the script.
 591         exit;
 592 }
 593
 594 #
 595 ## Private function to read-in and parse rules of a given rulefile.
 596 #
 597 ## The given file will be read, parsed and all valid rules will be stored by ID,
 598 ## message/description and it's state in the snortrules hash.
 599 #
 600 sub readrulesfile ($) {
 601         my $rulefile = shift;
 602
 603         # Open rule file and read in contents
 604         open(RULEFILE, "$snortrulepath/$rulefile") or die "Unable to read $rulefile!";
 605
 606         # Store file content in an array.
 607         my @lines = <RULEFILE>;
 608
 609         # Close file.
 610         close(RULEFILE);
 611
 612         # Loop over rule file contents
 613         foreach my $line (@lines) {
 614                 # Remove whitespaces.
 615                 chomp $line;
 616
 617                 # Skip blank  lines.
 618                 next if ($line =~ /^\s*$/);
 619
 620                 # Local vars.
 621                 my $sid;
 622                 my $msg;
 623
 624                 # Gather rule sid and message from the ruleline.
 625                 if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) {
 626                         $msg = $1;
 627                         $sid = $2;
 628
 629                         # Check if a rule has been found.
 630                         if ($sid && $msg) {
 631                                 # Add rule to the snortrules hash.
 632                                 $snortrules{$rulefile}{$sid}{'Description'} = $msg;
 633
 634                                 # Grab status of the rule. Check if ruleline starts with a "dash".
 635                                 if ($line =~ /^\#/) {
 636                                         # If yes, the rule is disabled.
 637                                         $snortrules{$rulefile}{$sid}{'State'} = "off";
 638                                 } else {
 639                                         # Otherwise the rule is enabled.
 640                                         $snortrules{$rulefile}{$sid}{'State'} = "on";
 641                                 }
 642                         }
 643                 }
 644         }
 645 }