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 use File::Copy;
  28
  29 require '/var/ipfire/general-functions.pl';
  30 require "${General::swroot}/lang.pl";
  31 require "${General::swroot}/header.pl";
  32
  33 my %color = ();
  34 my %mainsettings = ();
  35 my %netsettings = ();
  36 my %snortsettings=();
  37 my %cgiparams=();
  38 my %checked=();
  39 my %selected=();
  40
  41 # Read-in main settings, for language, theme and colors.
  42 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  43 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  44
  45 # Get netsettings.
  46 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  47
  48 &Header::showhttpheaders();
  49
  50 # Default settings for snort.
  51 $snortsettings{'ENABLE_SNORT'} = 'off';
  52 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
  53 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
  54 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
  55 $snortsettings{'ACTION'} = '';
  56 $snortsettings{'RULES'} = '';
  57 $snortsettings{'OINKCODE'} = '';
  58 $snortsettings{'INSTALLDATE'} = '';
  59
  60 #Get GUI values
  61 &Header::getcgihash(\%cgiparams);
  62
  63 my $snortrulepath = "/etc/snort/rules";
  64 my $snortusedrulefilesfile = "${General::swroot}/snort/snort-used-rulefiles.conf";
  65 my $restartsnortrequired = 0;
  66 my %snortrules;
  67 my $errormessage;
  68 my $url;
  69
  70 ## Grab all available snort rules and store them in the snortrules hash.
  71 #
  72 # Open snort rules directory and do a directory listing.
  73 opendir(DIR, $snortrulepath) or die $!;
  74         # Loop through the direcory.
  75         while (my $file = readdir(DIR)) {
  76
  77                 # We only want files.
  78                 next unless (-f "$snortrulepath/$file");
  79
  80                 # Ignore empty files.
  81                 next if (-z "$snortrulepath/$file");
  82
  83                 # Use a regular expression to find files ending in .rules
  84                 next unless ($file =~ m/\.rules$/);
  85
  86                 # Ignore files which are not read-able.
  87                 next unless (-R "$snortrulepath/$file");
  88
  89                 # Call subfunction to read-in rulefile and add rules to
  90                 # the snortrules hash.
  91                 &readrulesfile("$file");
  92         }
  93
  94 closedir(DIR);
  95
  96 # Gather used rulefiles.
  97 #
  98 # Check if the file for activated rulefiles is not empty.
  99 if(-f $snortusedrulefilesfile) {
 100         # Open the file for used rulefile and read-in content.
 101         open(FILE, $snortusedrulefilesfile) or die "Could not open $snortusedrulefilesfile. $!\n";
 102
 103         # Read-in content.
 104         my @lines = <FILE>;
 105
 106         # Close file.
 107         close(FILE);
 108
 109         # Loop through the array.
 110         foreach my $line (@lines) {
 111                 # Remove newlines.
 112                 chomp($line);
 113
 114                 # Skip comments.
 115                 next if ($line =~ /\#/);
 116
 117                 # Skip blank  lines.
 118                 next if ($line =~ /^\s*$/);
 119
 120                 # Gather rule sid and message from the ruleline.
 121                 if ($line =~ /.*include \$RULE_PATH\/(.*)/) {
 122                         my $rulefile = $1;
 123
 124                         # Add the rulefile to the %snortrules hash.
 125                         $snortrules{$rulefile}{'Rulefile'}{'State'} = "on";
 126                 }
 127         }
 128 }
 129
 130 # Save ruleset.
 131 if ($cgiparams{'RULESET'} eq $Lang::tr{'update'}) {
 132         my $enabled_sids_file = "${General::swroot}/snort/oinkmaster-enabled-sids.conf";
 133         my $disabled_sids_file = "${General::swroot}/snort/oinkmaster-disabled-sids.conf";
 134
 135         # Arrays to store sid which should be added to the corresponding files.
 136         my @enabled_sids;
 137         my @disabled_sids;
 138         my @enabled_rulefiles;
 139
 140         # Loop through the hash of snortrules.
 141         foreach my $rulefile(keys %snortrules) {
 142                 # Check if the rulefile is enabled.
 143                 if ($cgiparams{$rulefile} eq "on") {
 144                         # Add rulefile to the array of enabled rulefiles.
 145                         push(@enabled_rulefiles, $rulefile);
 146
 147                         # Drop item from cgiparams hash.
 148                         delete $cgiparams{$rulefile};
 149                 }
 150         }
 151
 152         # Loop through the hash of snortrules.
 153         foreach my $rulefile (keys %snortrules) {
 154                 # Loop through the single rules of the rulefile.
 155                 foreach my $sid (keys %{$snortrules{$rulefile}}) {
 156                         # Skip the current sid if it is not numeric.
 157                         next unless ($sid =~ /\d+/ );
 158
 159                         # Check if there exists a key in the cgiparams hash for this sid.
 160                         if (exists($cgiparams{$sid})) {
 161                                 # Look if the rule is disabled.
 162                                 if ($snortrules{$rulefile}{$sid}{'State'} eq "off") {
 163                                         # Check if the state has been set to 'on'.
 164                                         if ($cgiparams{$sid} eq "on") {
 165                                                 # Add the sid to the enabled_sids array.
 166                                                 push(@enabled_sids, $sid);
 167
 168                                                 # Drop item from cgiparams hash.
 169                                                 delete $cgiparams{$rulefile}{$sid};
 170                                         }
 171                                 }
 172                         } else {
 173                                 # Look if the rule is enabled.
 174                                 if ($snortrules{$rulefile}{$sid}{'State'} eq "on") {
 175                                         # Check if the state is 'on' and should be disabled.
 176                                         # In this case there is no entry
 177                                         # for the sid in the cgiparams hash.
 178                                         # Add it to the disabled_sids array.
 179                                         push(@disabled_sids, $sid);
 180
 181                                         # Drop item from cgiparams hash.
 182                                         delete $cgiparams{$rulefile}{$sid};
 183                                 }
 184                         }
 185                 }
 186         }
 187
 188         # Open enabled sid's file for writing.
 189         open(FILE, ">$enabled_sids_file") or die "Could not write to $enabled_sids_file. $!\n";
 190
 191         # Write header to file.
 192         print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
 193
 194         # Check if the enabled_sids array contains any sid's.
 195         if (@enabled_sids) {
 196                 # Loop through the array of enabled sids and write them to the file.
 197                 foreach my $sid (@enabled_sids) {
 198                         print FILE "enablesid $sid\n";
 199                 }
 200         }
 201
 202         # Close file after writing.
 203         close(FILE);
 204
 205         # Open disabled sid's file for writing.
 206         open(FILE, ">$disabled_sids_file") or die "Could not write to $disabled_sids_file. $!\n";
 207
 208         # Write header to file.
 209         print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
 210
 211         # Check if the enabled_sids array contains any sid's.
 212         if (@disabled_sids) {
 213                 # Loop through the array of disabled sids and write them to the file.
 214                 foreach my $sid (@disabled_sids) {
 215                         print FILE "disablesid $sid\n";
 216                 }
 217         }
 218
 219         # Close file after writing.
 220         close(FILE);
 221
 222         # Open file for used rulefiles.
 223         open (FILE, ">$snortusedrulefilesfile") or die "Could not write to $snortusedrulefilesfile. $!\n";
 224
 225         # Write header to file.
 226         print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
 227
 228         # Check if the enabled_rulefiles array contains any entries.
 229         if (@enabled_rulefiles) {
 230                 # Loop through the array of rulefiles which should be loaded and write the to the file.
 231                 foreach my $file (@enabled_rulefiles) {
 232                         print FILE "include \$RULE_PATH/$file\n";
 233                 }
 234         }
 235
 236         # Close file after writing.
 237         close(FILE);
 238
 239         # Call oinkmaster to alter the ruleset.
 240         &oinkmaster();
 241
 242 # Download new ruleset.
 243 } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'download new ruleset'}) {
 244         # Local var.
 245         my $return;
 246
 247         # Call diskfree to gather the free disk space of /var.
 248         my @df = `/bin/df -B M /var`;
 249
 250         # Loop through the output.
 251         foreach my $line (@df) {
 252                 # Ignore header line.
 253                 next if $line =~ m/^Filesystem/;
 254
 255                 # Search for a line with the device information.
 256                 if ($line =~ m/dev/ ) {
 257                         # Split the line into single pieces.
 258                         my @values = split(' ', $line);
 259                         my ($filesystem, $blocks, $used, $available, $used_perenctage, $mounted_on) = @values;
 260
 261                         # Check if the available disk space is more than 300MB.
 262                         if ($available < 300) {
 263                                 # If there is not enough space, print out an error message.
 264                                 $errormessage = "$Lang::tr{'not enough disk space'} < 300MB, /var $1MB";
 265                         } else {
 266                                 # Call subfunction to download the ruleset.
 267                                 &downloadrulesfile();
 268
 269                                 # Sleep for 3 seconds.
 270                                 sleep(3);
 271
 272                                 # Gather return of the external wget.
 273                                 $return = `cat /var/tmp/log 2>/dev/null`;
 274                         }
 275
 276                         # Check if there was an error.
 277                         if ($return =~ "ERROR") {
 278                                 # Store error message for display.
 279                                 $errormessage = "<br /><pre>".$return."</pre>";
 280                         } else {
 281                                 # Call subfunction to launch oinkmaster.
 282                                 &oinkmaster();
 283
 284                                 # Sleep for 2 seconds.
 285                                 sleep(2);
 286                         }
 287                 }
 288         }
 289 }
 290
 291
 292 if ($snortsettings{'OINKCODE'} ne "") {
 293         $errormessage = $Lang::tr{'invalid input for oink code'} unless ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/);
 294 }
 295
 296 if (!$errormessage) {
 297         if ($snortsettings{'RULES'} eq 'subscripted') {
 298                 $url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
 299         } elsif ($snortsettings{'RULES'} eq 'registered') {
 300                 $url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
 301         } elsif ($snortsettings{'RULES'} eq 'community') {
 302                 $url=" https://www.snort.org/rules/community";
 303         } else {
 304                 $url="http://rules.emergingthreats.net/open/snort-2.9.0/emerging.rules.tar.gz";
 305         }
 306
 307         if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" ) {
 308                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 309                 if ($snortsettings{'ENABLE_SNORT'} eq 'on')
 310                 {
 311                         system ('/usr/bin/touch', "${General::swroot}/snort/enable");
 312                 } else {
 313                         unlink "${General::swroot}/snort/enable";
 314                 }
 315                 if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
 316                 {
 317                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
 318                 } else {
 319                         unlink "${General::swroot}/snort/enable_green";
 320                 }
 321                 if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
 322                 {
 323                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
 324                 } else {
 325                         unlink "${General::swroot}/snort/enable_blue";
 326                 }
 327                 if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
 328                 {
 329                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
 330                 } else {
 331                         unlink "${General::swroot}/snort/enable_orange";
 332                 }
 333                 if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
 334                 {
 335                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
 336                 } else {
 337                         unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
 338                 }
 339
 340                 system('/usr/local/bin/snortctrl restart >/dev/null');
 341         }
 342 }
 343
 344 # Read-in snortsettings
 345 &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 346
 347 $checked{'ENABLE_SNORT'}{'off'} = '';
 348 $checked{'ENABLE_SNORT'}{'on'} = '';
 349 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 350 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 351 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 352 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 353 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 354 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 355 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 356 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 357 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 358 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 359 $selected{'RULES'}{'nothing'} = '';
 360 $selected{'RULES'}{'community'} = '';
 361 $selected{'RULES'}{'emerging'} = '';
 362 $selected{'RULES'}{'registered'} = '';
 363 $selected{'RULES'}{'subscripted'} = '';
 364 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 365
 366 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 367
 368 ### Java Script ###
 369 print <<END
 370 <script>
 371         // Tiny java script function to show/hide the rules
 372         // of a given category.
 373         function showhide(tblname) {
 374                 \$("#" + tblname).toggle();
 375         }
 376 </script>
 377 END
 378 ;
 379
 380 &Header::openbigbox('100%', 'left', '', $errormessage);
 381
 382 if ($errormessage) {
 383         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 384         print "<class name='base'>$errormessage\n";
 385         print "&nbsp;</class>\n";
 386         &Header::closebox();
 387 }
 388
 389 my $return = `pidof oinkmaster.pl -x`;
 390 chomp($return);
 391 if ($return) {
 392         &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='10;'>" );
 393         print <<END;
 394         <table>
 395                 <tr><td>
 396                                 <img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' />&nbsp;
 397                         <td>
 398                                 $Lang::tr{'snort working'}
 399                 <tr><td colspan='2' align='center'>
 400                         <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 401                                 <input type='image' alt='$Lang::tr{'reload'}' title='$Lang::tr{'reload'}' src='/images/view-refresh.png' />
 402                         </form>
 403                 <tr><td colspan='2' align='left'><pre>
 404 END
 405         my @output = `tail -20 /var/tmp/log`;
 406         foreach (@output) {
 407                 print "$_";
 408         }
 409         print <<END;
 410                         </pre>
 411                 </table>
 412 END
 413         &Header::closebox();
 414         &Header::closebigbox();
 415         &Header::closepage();
 416         exit;
 417         refreshpage();
 418 }
 419
 420 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'});
 421 print <<END
 422 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 423 <tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
 424 END
 425 ;
 426 if ($netsettings{'BLUE_DEV'} ne '') {
 427   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />   BLUE Snort";
 428 }
 429 if ($netsettings{'ORANGE_DEV'} ne '') {
 430   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />   ORANGE Snort";
 431 }
 432   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />   RED Snort";
 433
 434 print <<END
 435 </td></tr>
 436 <tr>
 437         <td><br><br></td>
 438 </tr>
 439 <tr>
 440         <td><b>$Lang::tr{'ids rules update'}</b></td>
 441 </tr>
 442 <tr>
 443         <td><select name='RULES'>
 444                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 445                                 <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option>
 446                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 447                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 448                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 449                         </select>
 450         </td>
 451 </tr>
 452 <tr>
 453         <td><br />
 454                 $Lang::tr{'ids rules license'} <a href='https://www.snort.org/subscribe' target='_blank'>www.snort.org</a>$Lang::tr{'ids rules license1'}<br /><br />
 455                 $Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}
 456         </td>
 457 </tr>
 458 <tr>
 459         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 460 </tr>
 461 <tr>
 462         <td width='30%' align='left'><br><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 463 END
 464 ;
 465 if ( -e "/var/tmp/snortrules.tar.gz"){
 466         my @Info = stat("/var/tmp/snortrules.tar.gz");
 467         $snortsettings{'INSTALLDATE'} = localtime($Info[9]);
 468 }
 469 print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 470
 471 print <<END
 472 </tr>
 473 </table>
 474 <br><br>
 475 <table width='100%'>
 476 <tr>
 477         <td align='right'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 478 </tr>
 479 </table>
 480 </form>
 481 END
 482 ;
 483
 484 &Header::closebox();
 485
 486 &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 487         print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n";
 488
 489         # Output display table for rule files
 490         print "<table width='100%'>\n";
 491
 492         # Local variable required for java script to show/hide
 493         # rules of a rulefile.
 494         my $rulesetcount = 1;
 495
 496         # Loop over each rule file
 497         foreach my $rulefile (sort keys(%snortrules)) {
 498                 my $rulechecked = '';
 499
 500                 # Check if rule file is enabled
 501                 if ($snortrules{$rulefile}{'Rulefile'}{'State'} eq 'on') {
 502                         $rulechecked = 'CHECKED';
 503                 }
 504
 505                 # Table and rows for the rule files.
 506                 print"<tr>\n";
 507                 print"<td class='base' width='5%'>\n";
 508                 print"<input type='checkbox' name='$rulefile' $rulechecked>\n";
 509                 print"</td>\n";
 510                 print"<td class='base' width='90%'><b>$rulefile</b></td>\n";
 511                 print"<td class='base' width='5%' align='right'>\n";
 512                 print"<a href=\"javascript:showhide('ruleset$rulesetcount')\">SHOW</a>\n";
 513                 print"</td>\n";
 514                 print"</tr>\n";
 515
 516                 # Rows which will be hidden per default and will contain the single rules.
 517                 print"<tr  style='display:none' id='ruleset$rulesetcount'>\n";
 518                 print"<td colspan='3'>\n";
 519
 520                 # Local vars
 521                 my $lines;
 522                 my $rows;
 523                 my $col;
 524
 525                 # New table for the single rules.
 526                 print "<table width='100%'>\n";
 527
 528                 # Loop over rule file rules
 529                 foreach my $sid (sort {$a <=> $b} keys(%{$snortrules{$rulefile}})) {
 530                         # Local vars
 531                         my $ruledefchecked = '';
 532
 533                         # Skip rulefile itself.
 534                         next if ($sid eq "Rulefile");
 535
 536                         # If 2 rules have been displayed, start a new row
 537                         if (($lines % 2) == 0) {
 538                                 print "</tr><tr>\n";
 539
 540                                 # Increase rows by once.
 541                                 $rows++;
 542                         }
 543
 544                         # Colour lines.
 545                         if ($rows % 2) {
 546                                 $col="bgcolor='$color{'color20'}'";
 547                         } else {
 548                                 $col="bgcolor='$color{'color22'}'";
 549                         }
 550
 551                         # Set rule state
 552                         if ($snortrules{$rulefile}{$sid}{'State'} eq 'on') {
 553                                 $ruledefchecked = 'CHECKED';
 554                         }
 555
 556                         # Create rule checkbox and display rule description
 557                         print "<td class='base' width='5%' align='right' $col>\n";
 558                         print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n";
 559                         print "</td>\n";
 560                         print "<td class='base' width='45%' $col>$snortrules{$rulefile}{$sid}{'Description'}</td>";
 561
 562                         # Increment rule count
 563                         $lines++;
 564                 }
 565
 566                 # If do not have a second rule for row, create empty cell
 567                 if (($lines % 2) != 0) {
 568                         print "<td class='base'></td>";
 569                 }
 570
 571                 # Close display table
 572                 print "</tr></table></td></tr>";
 573
 574                 # Finished whith the rule file, increase count.
 575                 $rulesetcount++;
 576         }
 577
 578         # Close display table
 579         print "</table>";
 580
 581 print <<END
 582 <table width='100%'>
 583 <tr>
 584         <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'>
 585                 &nbsp; <!-- space for future online help link -->
 586         </td>
 587 </tr>
 588 </table>
 589 </form>
 590 END
 591 ;
 592 &Header::closebox();
 593
 594 &Header::closebigbox();
 595 &Header::closepage();
 596
 597 sub refreshpage {
 598         &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='1;'>" );
 599                 print "<center><img src='/images/clock.gif' alt='' /><br/><font color='red'>$Lang::tr{'pagerefresh'}</font></center>";
 600         &Header::closebox();
 601 }
 602
 603 sub downloadrulesfile {
 604         my $peer;
 605         my $peerport;
 606
 607         unlink("/var/tmp/log");
 608
 609         unless (-e "${General::swroot}/red/active") {
 610                 $errormessage = $Lang::tr{'could not download latest updates'};
 611                 return undef;
 612         }
 613
 614         my %proxysettings=();
 615         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 616
 617         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 618                 ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 619         }
 620
 621         if ($peer) {
 622                 system("wget -r --proxy=on --proxy-user=$proxysettings{'UPSTREAM_USER'} --proxy-passwd=$proxysettings{'UPSTREAM_PASSWORD'} -e http_proxy=http://$peer:$peerport/ -o /var/tmp/log --output-document=/var/tmp/snortrules.tar.gz $url");
 623         } else {
 624                 system("wget -r -o /var/tmp/log --output-document=/var/tmp/snortrules.tar.gz $url");
 625         }
 626 }
 627
 628 sub oinkmaster () {
 629         # Call oinkmaster to generate ruleset.
 630         system("/usr/local/bin/oinkmaster.pl -v -s -u file:///var/tmp/snortrules.tar.gz -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules >>/var/tmp/log 2>&1 &");
 631 }
 632
 633 sub readrulesfile ($) {
 634         my $rulefile = shift;
 635
 636         # Open rule file and read in contents
 637         open(RULEFILE, "$snortrulepath/$rulefile") or die "Unable to read $rulefile!";
 638
 639         # Store file content in an array.
 640         my @lines = <RULEFILE>;
 641
 642         # Close file.
 643         close(RULEFILE);
 644
 645         # Loop over rule file contents
 646         foreach my $line (@lines) {
 647                 # Remove whitespaces.
 648                 chomp $line;
 649
 650                 # Skip blank  lines.
 651                 next if ($line =~ /^\s*$/);
 652
 653                 # Local vars.
 654                 my $sid;
 655                 my $msg;
 656
 657                 # Gather rule sid and message from the ruleline.
 658                 if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) {
 659                         $msg = $1;
 660                         $sid = $2;
 661
 662                         # Check if a rule has been found.
 663                         if ($sid && $msg) {
 664                                 # Add rule to the snortrules hash.
 665                                 $snortrules{$rulefile}{$sid}{'Description'} = $msg;
 666
 667                                 # Grab status of the rule. Check if ruleline starts with a "dash".
 668                                 if ($line =~ /^\#/) {
 669                                         # If yes, the rule is disabled.
 670                                         $snortrules{$rulefile}{$sid}{'State'} = "off";
 671                                 } else {
 672                                         # Otherwise the rule is enabled.
 673                                         $snortrules{$rulefile}{$sid}{'State'} = "on";
 674                                 }
 675                         }
 676                 }
 677         }
 678 }