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{$rulefile}}) {
 156                         # Check if there exists a key in the cgiparams hash for this sid.
 157                         if (exists($cgiparams{$sid})) {
 158                                 # Look if the rule is disabled.
 159                                 if ($snortrules{$rulefile}{$sid}{'State'} eq "off") {
 160                                         # Check if the state has been set to 'on'.
 161                                         if ($cgiparams{$sid} eq "on") {
 162                                                 # Add the sid to the enabled_sids array.
 163                                                 push(@enabled_sids, $sid);
 164
 165                                                 # Drop item from cgiparams hash.
 166                                                 delete $cgiparams{$rulefile}{$sid};
 167                                         }
 168                                 }
 169                         } else {
 170                                 # Look if the rule is enabled.
 171                                 if ($snortrules{$rulefile}{$sid}{'State'} eq "on") {
 172                                         # Check if the state is 'on' and should be disabled.
 173                                         # In this case there is no entry
 174                                         # for the sid in the cgiparams hash.
 175                                         # Add it to the disabled_sids array.
 176                                         push(@disabled_sids, $sid);
 177
 178                                         # Drop item from cgiparams hash.
 179                                         delete $cgiparams{$rulefile}{$sid};
 180                                 }
 181                         }
 182                 }
 183         }
 184
 185         # Open enabled sid's file for writing.
 186         open(FILE, ">$enabled_sids_file") or die "Could not write to $enabled_sids_file. $!\n";
 187
 188         # Write header to file.
 189         print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
 190
 191         # Check if the enabled_sids array contains any sid's.
 192         if (@enabled_sids) {
 193                 # Loop through the array of enabled sids and write them to the file.
 194                 foreach my $sid (@enabled_sids) {
 195                         print FILE "enablesid $sid\n";
 196                 }
 197         }
 198
 199         # Close file after writing.
 200         close(FILE);
 201
 202         # Open disabled sid's file for writing.
 203         open(FILE, ">$disabled_sids_file") or die "Could not write to $disabled_sids_file. $!\n";
 204
 205         # Write header to file.
 206         print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
 207
 208         # Check if the enabled_sids array contains any sid's.
 209         if (@disabled_sids) {
 210                 # Loop through the array of disabled sids and write them to the file.
 211                 foreach my $sid (@disabled_sids) {
 212                         print FILE "disablesid $sid\n";
 213                 }
 214         }
 215
 216         # Close file after writing.
 217         close(FILE);
 218
 219         # Open file for used rulefiles.
 220         open (FILE, ">$snortusedrulefilesfile") or die "Could not write to $snortusedrulefilesfile. $!\n";
 221
 222         # Write header to file.
 223         print FILE "#Autogenerated file. Any custom changes will be overwritten!\n";
 224
 225         # Check if the enabled_rulefiles array contains any entries.
 226         if (@enabled_rulefiles) {
 227                 # Loop through the array of rulefiles which should be loaded and write the to the file.
 228                 foreach my $file (@enabled_rulefiles) {
 229                         print FILE "include \$RULE_PATH/$file\n";
 230                 }
 231         }
 232
 233         # Close file after writing.
 234         close(FILE);
 235
 236         # Call oinkmaster to alter the ruleset.
 237         &oinkmaster();
 238
 239 # Download new ruleset.
 240 } elsif ($cgiparams{'RULESET'} eq $Lang::tr{'download new ruleset'}) {
 241         # Local var.
 242         my $return;
 243
 244         # Call diskfree to gather the free disk space of /var.
 245         my @df = `/bin/df -B M /var`;
 246
 247         # Loop through the output.
 248         foreach my $line (@df) {
 249                 # Ignore header line.
 250                 next if $line =~ m/^Filesystem/;
 251
 252                 # Search for a line with the device information.
 253                 if ($line =~ m/dev/ ) {
 254                         # Split the line into single pieces.
 255                         my @values = split(' ', $line);
 256                         my ($filesystem, $blocks, $used, $available, $used_perenctage, $mounted_on) = @values;
 257
 258                         # Check if the available disk space is more than 300MB.
 259                         if ($available < 300) {
 260                                 # If there is not enough space, print out an error message.
 261                                 $errormessage = "$Lang::tr{'not enough disk space'} < 300MB, /var $1MB";
 262                         } else {
 263                                 # Call subfunction to download the ruleset.
 264                                 &downloadrulesfile();
 265
 266                                 # Sleep for 3 seconds.
 267                                 sleep(3);
 268
 269                                 # Gather return of the external wget.
 270                                 $return = `cat /var/tmp/log 2>/dev/null`;
 271                         }
 272
 273                         # Check if there was an error.
 274                         if ($return =~ "ERROR") {
 275                                 # Store error message for display.
 276                                 $errormessage = "<br /><pre>".$return."</pre>";
 277                         } else {
 278                                 # Call subfunction to launch oinkmaster.
 279                                 &oinkmaster();
 280
 281                                 # Sleep for 2 seconds.
 282                                 sleep(2);
 283                         }
 284                 }
 285         }
 286 }
 287
 288
 289 if ($snortsettings{'OINKCODE'} ne "") {
 290         $errormessage = $Lang::tr{'invalid input for oink code'} unless ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/);
 291 }
 292
 293 if (!$errormessage) {
 294         if ($snortsettings{'RULES'} eq 'subscripted') {
 295                 $url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
 296         } elsif ($snortsettings{'RULES'} eq 'registered') {
 297                 $url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
 298         } elsif ($snortsettings{'RULES'} eq 'community') {
 299                 $url=" https://www.snort.org/rules/community";
 300         } else {
 301                 $url="http://rules.emergingthreats.net/open/snort-2.9.0/emerging.rules.tar.gz";
 302         }
 303
 304         if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" ) {
 305                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 306                 if ($snortsettings{'ENABLE_SNORT'} eq 'on')
 307                 {
 308                         system ('/usr/bin/touch', "${General::swroot}/snort/enable");
 309                 } else {
 310                         unlink "${General::swroot}/snort/enable";
 311                 }
 312                 if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
 313                 {
 314                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
 315                 } else {
 316                         unlink "${General::swroot}/snort/enable_green";
 317                 }
 318                 if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
 319                 {
 320                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
 321                 } else {
 322                         unlink "${General::swroot}/snort/enable_blue";
 323                 }
 324                 if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
 325                 {
 326                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
 327                 } else {
 328                         unlink "${General::swroot}/snort/enable_orange";
 329                 }
 330                 if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
 331                 {
 332                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
 333                 } else {
 334                         unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
 335                 }
 336
 337                 system('/usr/local/bin/snortctrl restart >/dev/null');
 338         }
 339 }
 340
 341 # Read-in snortsettings
 342 &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 343
 344 $checked{'ENABLE_SNORT'}{'off'} = '';
 345 $checked{'ENABLE_SNORT'}{'on'} = '';
 346 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 347 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 348 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 349 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 350 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 351 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 352 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 353 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 354 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 355 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 356 $selected{'RULES'}{'nothing'} = '';
 357 $selected{'RULES'}{'community'} = '';
 358 $selected{'RULES'}{'emerging'} = '';
 359 $selected{'RULES'}{'registered'} = '';
 360 $selected{'RULES'}{'subscripted'} = '';
 361 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 362
 363 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 364
 365 ### Java Script ###
 366 print <<END
 367 <script>
 368         // Tiny java script function to show/hide the rules
 369         // of a given category.
 370         function showhide(tblname) {
 371                 \$("#" + tblname).toggle();
 372         }
 373 </script>
 374 END
 375 ;
 376
 377 &Header::openbigbox('100%', 'left', '', $errormessage);
 378
 379 ###############
 380 # DEBUG DEBUG
 381 # &Header::openbox('100%', 'left', 'DEBUG');
 382 # my $debugCount = 0;
 383 # foreach my $line (sort keys %snortsettings) {
 384 # print "$line = $snortsettings{$line}<br />\n";
 385 # $debugCount++;
 386 # }
 387 # print "&nbsp;Count: $debugCount\n";
 388 # &Header::closebox();
 389 # DEBUG DEBUG
 390 ###############
 391
 392 if ($errormessage) {
 393         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 394         print "<class name='base'>$errormessage\n";
 395         print "&nbsp;</class>\n";
 396         &Header::closebox();
 397 }
 398
 399 my $return = `pidof oinkmaster.pl -x`;
 400 chomp($return);
 401 if ($return) {
 402         &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='10;'>" );
 403         print <<END;
 404         <table>
 405                 <tr><td>
 406                                 <img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' />&nbsp;
 407                         <td>
 408                                 $Lang::tr{'snort working'}
 409                 <tr><td colspan='2' align='center'>
 410                         <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 411                                 <input type='image' alt='$Lang::tr{'reload'}' title='$Lang::tr{'reload'}' src='/images/view-refresh.png' />
 412                         </form>
 413                 <tr><td colspan='2' align='left'><pre>
 414 END
 415         my @output = `tail -20 /var/tmp/log`;
 416         foreach (@output) {
 417                 print "$_";
 418         }
 419         print <<END;
 420                         </pre>
 421                 </table>
 422 END
 423         &Header::closebox();
 424         &Header::closebigbox();
 425         &Header::closepage();
 426         exit;
 427         refreshpage();
 428 }
 429
 430 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'});
 431 print <<END
 432 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 433 <tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
 434 END
 435 ;
 436 if ($netsettings{'BLUE_DEV'} ne '') {
 437   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />   BLUE Snort";
 438 }
 439 if ($netsettings{'ORANGE_DEV'} ne '') {
 440   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />   ORANGE Snort";
 441 }
 442   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />   RED Snort";
 443
 444 print <<END
 445 </td></tr>
 446 <tr>
 447         <td><br><br></td>
 448 </tr>
 449 <tr>
 450         <td><b>$Lang::tr{'ids rules update'}</b></td>
 451 </tr>
 452 <tr>
 453         <td><select name='RULES'>
 454                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 455                                 <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option>
 456                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 457                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 458                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 459                         </select>
 460         </td>
 461 </tr>
 462 <tr>
 463         <td><br />
 464                 $Lang::tr{'ids rules license'} <a href='https://www.snort.org/subscribe' target='_blank'>www.snort.org</a>$Lang::tr{'ids rules license1'}<br /><br />
 465                 $Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}
 466         </td>
 467 </tr>
 468 <tr>
 469         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 470 </tr>
 471 <tr>
 472         <td width='30%' align='left'><br><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 473 END
 474 ;
 475 if ( -e "/var/tmp/snortrules.tar.gz"){
 476         my @Info = stat("/var/tmp/snortrules.tar.gz");
 477         $snortsettings{'INSTALLDATE'} = localtime($Info[9]);
 478 }
 479 print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 480
 481 print <<END
 482 </tr>
 483 </table>
 484 <br><br>
 485 <table width='100%'>
 486 <tr>
 487         <td align='right'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 488 </tr>
 489 </table>
 490 </form>
 491 END
 492 ;
 493
 494 &Header::closebox();
 495
 496 &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 497         print"<form method='POST' action='$ENV{'SCRIPT_NAME'}'>\n";
 498
 499         # Output display table for rule files
 500         print "<table width='100%'>\n";
 501
 502         # Local variable required for java script to show/hide
 503         # rules of a rulefile.
 504         my $rulesetcount = 1;
 505
 506         # Loop over each rule file
 507         foreach my $rulefile (sort keys(%snortrules)) {
 508                 my $rulechecked = '';
 509
 510                 # Check if rule file is enabled
 511                 if ($snortrules{$rulefile}{'Rulefile'}{'State'} eq 'on') {
 512                         $rulechecked = 'CHECKED';
 513                 }
 514
 515                 # Table and rows for the rule files.
 516                 print"<tr>\n";
 517                 print"<td class='base' width='5%'>\n";
 518                 print"<input type='checkbox' name='$rulefile' $rulechecked>\n";
 519                 print"</td>\n";
 520                 print"<td class='base' width='90%'><b>$rulefile</b></td>\n";
 521                 print"<td class='base' width='5%' align='right'>\n";
 522                 print"<a href=\"javascript:showhide('ruleset$rulesetcount')\">SHOW</a>\n";
 523                 print"</td>\n";
 524                 print"</tr>\n";
 525
 526                 # Rows which will be hidden per default and will contain the single rules.
 527                 print"<tr  style='display:none' id='ruleset$rulesetcount'>\n";
 528                 print"<td colspan='3'>\n";
 529
 530                 # Local vars
 531                 my $lines;
 532                 my $rows;
 533                 my $col;
 534
 535                 # New table for the single rules.
 536                 print "<table width='100%'>\n";
 537
 538                 # Loop over rule file rules
 539                 foreach my $sid (sort {$a <=> $b} keys(%{$snortrules{$rulefile}})) {
 540                         # Local vars
 541                         my $ruledefchecked = '';
 542
 543                         # Skip rulefile itself.
 544                         next if ($sid eq "Rulefile");
 545
 546                         # If 2 rules have been displayed, start a new row
 547                         if (($lines % 2) == 0) {
 548                                 print "</tr><tr>\n";
 549
 550                                 # Increase rows by once.
 551                                 $rows++;
 552                         }
 553
 554                         # Colour lines.
 555                         if ($rows % 2) {
 556                                 $col="bgcolor='$color{'color20'}'";
 557                         } else {
 558                                 $col="bgcolor='$color{'color22'}'";
 559                         }
 560
 561                         # Set rule state
 562                         if ($snortrules{$rulefile}{$sid}{'State'} eq 'on') {
 563                                 $ruledefchecked = 'CHECKED';
 564                         }
 565
 566                         # Create rule checkbox and display rule description
 567                         print "<td class='base' width='5%' align='right' $col>\n";
 568                         print "<input type='checkbox' NAME='$sid' $ruledefchecked>\n";
 569                         print "</td>\n";
 570                         print "<td class='base' width='45%' $col>$snortrules{$rulefile}{$sid}{'Description'}</td>";
 571
 572                         # Increment rule count
 573                         $lines++;
 574                 }
 575
 576                 # If do not have a second rule for row, create empty cell
 577                 if (($lines % 2) != 0) {
 578                         print "<td class='base'></td>";
 579                 }
 580
 581                 # Close display table
 582                 print "</tr></table></td></tr>";
 583
 584                 # Finished whith the rule file, increase count.
 585                 $rulesetcount++;
 586         }
 587
 588         # Close display table
 589         print "</table>";
 590
 591 print <<END
 592 <table width='100%'>
 593 <tr>
 594         <td width='100%' align='right'><input type='submit' name='RULESET' value='$Lang::tr{'update'}'>
 595                 &nbsp; <!-- space for future online help link -->
 596         </td>
 597 </tr>
 598 </table>
 599 </form>
 600 END
 601 ;
 602 &Header::closebox();
 603
 604 &Header::closebigbox();
 605 &Header::closepage();
 606
 607 sub refreshpage {
 608         &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='1;'>" );
 609                 print "<center><img src='/images/clock.gif' alt='' /><br/><font color='red'>$Lang::tr{'pagerefresh'}</font></center>";
 610         &Header::closebox();
 611 }
 612
 613 sub downloadrulesfile {
 614         my $peer;
 615         my $peerport;
 616
 617         unlink("/var/tmp/log");
 618
 619         unless (-e "${General::swroot}/red/active") {
 620                 $errormessage = $Lang::tr{'could not download latest updates'};
 621                 return undef;
 622         }
 623
 624         my %proxysettings=();
 625         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 626
 627         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 628                 ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 629         }
 630
 631         if ($peer) {
 632                 system("wget -r --proxy=on --proxy-user=$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");
 633         } else {
 634                 system("wget -r -o /var/tmp/log --output-document=/var/tmp/snortrules.tar.gz $url");
 635         }
 636 }
 637
 638 sub oinkmaster () {
 639         # Call oinkmaster to generate ruleset.
 640         system("/usr/local/bin/oinkmaster.pl -v -s -u file:///var/tmp/snortrules.tar.gz -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules >>/var/tmp/log 2>&1 &");
 641 }
 642
 643 sub readrulesfile ($) {
 644         my $rulefile = shift;
 645
 646         # Open rule file and read in contents
 647         open(RULEFILE, "$snortrulepath/$rulefile") or die "Unable to read $rulefile!";
 648
 649         # Store file content in an array.
 650         my @lines = <RULEFILE>;
 651
 652         # Close file.
 653         close(RULEFILE);
 654
 655         # Loop over rule file contents
 656         foreach my $line (@lines) {
 657                 # Remove whitespaces.
 658                 chomp $line;
 659
 660                 # Skip blank  lines.
 661                 next if ($line =~ /^\s*$/);
 662
 663                 # Local vars.
 664                 my $sid;
 665                 my $msg;
 666
 667                 # Gather rule sid and message from the ruleline.
 668                 if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) {
 669                         $msg = $1;
 670                         $sid = $2;
 671
 672                         # Check if a rule has been found.
 673                         if ($sid && $msg) {
 674                                 # Add rule to the snortrules hash.
 675                                 $snortrules{$rulefile}{$sid}{'Description'} = $msg;
 676
 677                                 # Grab status of the rule. Check if ruleline starts with a "dash".
 678                                 if ($line =~ /^\#/) {
 679                                         # If yes, the rule is disabled.
 680                                         $snortrules{$rulefile}{$sid}{'State'} = "off";
 681                                 } else {
 682                                         # Otherwise the rule is enabled.
 683                                         $snortrules{$rulefile}{$sid}{'State'} = "on";
 684                                 }
 685                         }
 686                 }
 687         }
 688 }