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 sub refreshpage{&Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='1;'>" );print "<center><img src='/images/clock.gif' alt='' /><br/><font color='red'>$Lang::tr{'pagerefresh'}</font></center>";&Header::closebox();}
  34
  35 $a = new CGI;
  36
  37 my %color = ();
  38 my %mainsettings = ();
  39 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  40 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  41
  42 my %snortsettings=();
  43 my %checked=();
  44 my %selected=();
  45 my %netsettings=();
  46 our $errormessage = '';
  47 our $results = '';
  48 our $tempdir = '';
  49 our $url='';
  50 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  51
  52 &Header::showhttpheaders();
  53
  54 $snortsettings{'ENABLE_SNORT'} = 'off';
  55 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
  56 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
  57 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
  58 $snortsettings{'ACTION'} = '';
  59 $snortsettings{'RULES'} = '';
  60 $snortsettings{'OINKCODE'} = '';
  61 $snortsettings{'INSTALLDATE'} = '';
  62 $snortsettings{'FILE'} = '';
  63 $snortsettings{'UPLOAD'} = '';
  64
  65 &Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
  66
  67 ####################### Added for snort rules control #################################
  68 my $snortrulepath; # change to "/etc/snort/rules" - maniac
  69 my @snortconfig;
  70 my $restartsnortrequired = 0;
  71 my %snortrules;
  72 my $rule = '';
  73 my $table1colour = '';
  74 my $table2colour = '';
  75 my $var = '';
  76 my $value = '';
  77 my $tmp = '';
  78 my $linkedrulefile = '';
  79 my $border = '';
  80 my $checkboxname = '';
  81
  82 if (-e "/etc/snort/snort.conf") {
  83
  84
  85         # Open snort.conf file, read it in, close it, and re-open for writing
  86         open(FILE, "/etc/snort/snort.conf") or die 'Unable to read snort config file.';
  87         @snortconfig = <FILE>;
  88         close(FILE);
  89         open(FILE, ">/etc/snort/snort.conf") or die 'Unable to write snort config file.';
  90
  91     my @rules = `cd /etc/snort/rules/ && ls *.rules 2>/dev/null`;    # With this loop the rule might be display with correct rulepath set
  92         foreach (@rules) {
  93         chomp $_;
  94         my $temp = join(";",@snortconfig);
  95     if ( $temp =~ /$_/ ){next;}
  96     else { push(@snortconfig,"#include \$RULE_PATH/".$_);}
  97         }
  98
  99         # Loop over each line
 100         foreach my $line (@snortconfig) {
 101                 # Trim the line
 102                 chomp $line;
 103
 104                 # Check for a line with .rules
 105                 if ($line =~ /\.rules$/) {
 106                         # Parse out rule file name
 107                         $rule = $line;
 108                         $rule =~ s/\$RULE_PATH\///i;
 109                         $rule =~ s/ ?include ?//i;
 110                         $rule =~ s/\#//i;
 111                         my $snortrulepathrule = "$snortrulepath/$rule";
 112
 113                         # Open rule file and read in contents
 114                         open(RULEFILE, "$snortrulepath/$rule") or die "Unable to read snort rule file for reading => $snortrulepath/$rule.";
 115                         my @snortrulefile = <RULEFILE>;
 116                         close(RULEFILE);
 117                         open(RULEFILE, ">$snortrulepath/$rule") or die "Unable to write snort rule file for writing $snortrulepath/$rule";
 118
 119                         # Local vars
 120                         my $dashlinecnt = 0;
 121                         my $desclook = 1;
 122                         my $snortruledesc = '';
 123                         my %snortruledef = ();
 124                         my $rulecnt = 1;
 125
 126                         # Loop over rule file contents
 127                         foreach my $ruleline (@snortrulefile) {
 128                                 chomp $ruleline;
 129
 130                                 # If still looking for a description
 131                                 if ($desclook) {
 132                                         # If line does not start with a # anymore, then done looking for a description
 133                                         if ($ruleline !~ /^\#/) {
 134                                                 $desclook = 0;
 135                                         }
 136
 137                                         # If see more than one dashed line, (start to) create rule file description
 138                                         if ($dashlinecnt > 1) {
 139                                                 # Check for a line starting with a #
 140                                                 if ($ruleline =~ /^\#/ and $ruleline !~ /^\#alert/) {
 141                                                         # Create tempruleline
 142                                                         my $tempruleline = $ruleline;
 143
 144                                                         # Strip off # and clean up line
 145                                                         $tempruleline =~ s/\# ?//i;
 146
 147                                                         # Check for part of a description
 148                                                         if ($snortruledesc eq '') {
 149                                                                 $snortruledesc = $tempruleline;
 150                                                         } else {
 151                                                                 $snortruledesc .= " $tempruleline";
 152                                                         }
 153                                                 } else {
 154                                                         # Must be done
 155                                                         $desclook = 0;
 156                                                 }
 157                                         }
 158
 159                                         # If have a dashed line, increment count
 160                                         if ($ruleline =~ /\# ?\-+/) {
 161                                                 $dashlinecnt++;
 162                                         }
 163                                 } else {
 164                                         # Parse out rule file rule's message for display
 165                                         if ($ruleline =~ /(msg\:\"[^\"]+\";)/) {
 166                                                 my $msg = '';
 167                                                 $msg = $1;
 168                                                 $msg =~ s/msg\:\"//i;
 169                                                 $msg =~ s/\";//i;
 170                                                 $snortruledef{$rulecnt}{'Description'} = $msg;
 171
 172                                                 # Check for 'Save' and rule file displayed in query string
 173                                                 if (($snortsettings{'ACTION'} eq $Lang::tr{'update'}) && ($ENV{'QUERY_STRING'} =~ /$rule/i)) {
 174                                                         # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 175                                                         if ((($ruleline =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"})) || (($ruleline !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}))) {
 176                                                                 $restartsnortrequired = 1;
 177                                                         }
 178
 179                                                         # Strip out leading # from rule line
 180                                                         $ruleline =~ s/\# ?//i;
 181
 182                                                         # Check if it does not exists (which means it is disabled), append a #
 183                                                         if (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}) {
 184                                                                 $ruleline = "#"." $ruleline";
 185                                                         }
 186                                                 }
 187
 188                                                 # Check if ruleline does not begin with a #, so it is enabled
 189                                                 if ($ruleline !~ /^\#/) {
 190                                                         $snortruledef{$rulecnt++}{'State'} = 'Enabled';
 191                                                 } else {
 192                                                         # Otherwise it is disabled
 193                                                         $snortruledef{$rulecnt++}{'State'} = 'Disabled';
 194                                                 }
 195                                         }
 196                                 }
 197
 198                                 # Print ruleline to RULEFILE
 199                                 print RULEFILE "$ruleline\n";
 200                         }
 201
 202                         # Close RULEFILE
 203                         close(RULEFILE);
 204
 205                         # Check for 'Save'
 206                         if ($snortsettings{'ACTION'} eq $Lang::tr{'update'}) {
 207                                 # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 208                                 if ((($line =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule"})) || (($line !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule"}))) {
 209                                         $restartsnortrequired = 1;
 210                                 }
 211
 212                                 # Strip out leading # from rule line
 213                                 $line =~ s/\# ?//i;
 214
 215                                 # Check if it does not exists (which means it is disabled), append a #
 216                                 if (!exists $snortsettings{"SNORT_RULE_$rule"}) {
 217                                         $line = "# $line";
 218                                 }
 219
 220                         }
 221
 222                         # Check for rule state
 223                         if ($line =~ /^\#/) {
 224                                 $snortrules{$rule}{"State"} = "Disabled";
 225                         } else {
 226                                 $snortrules{$rule}{"State"} = "Enabled";
 227                         }
 228
 229                         # Set rule description
 230                         $snortrules{$rule}{"Description"} = $snortruledesc;
 231
 232                         # Loop over sorted rules
 233                         foreach my $ruledef (sort {$a <=> $b} keys(%snortruledef)) {
 234                                 $snortrules{$rule}{"Definition"}{$ruledef}{'Description'} = $snortruledef{$ruledef}{'Description'};
 235                                 $snortrules{$rule}{"Definition"}{$ruledef}{'State'} = $snortruledef{$ruledef}{'State'};
 236                         }
 237
 238                         $snortruledesc = '';
 239                         print FILE "$line\n";
 240                 } elsif ($line =~ /var RULE_PATH/) {
 241                         ($tmp, $tmp, $snortrulepath) = split(' ', $line);
 242                         print FILE "$line\n";
 243                 } else {
 244                         print FILE "$line\n";
 245                 }
 246         }
 247         close(FILE);
 248
 249         if ($restartsnortrequired) {
 250                 system('/usr/local/bin/snortctrl restart >/dev/null');
 251         }
 252 }
 253
 254 #######################  End added for snort rules control  #################################
 255
 256 if ($snortsettings{'RULES'} eq 'subscripted') {
 257         $url=" https://www.snort.org/rules/snortrules-snapshot-2982.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
 258 } elsif ($snortsettings{'RULES'} eq 'registered') {
 259         $url=" https://www.snort.org/rules/snortrules-snapshot-2982.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
 260 } elsif ($snortsettings{'RULES'} eq 'community') {
 261         $url=" https://www.snort.org/rules/community";
 262 } else {
 263         $url="http://rules.emergingthreats.net/open/snort-2.9.0/emerging.rules.tar.gz";
 264 }
 265
 266 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" )
 267 {
 268         $errormessage = $Lang::tr{'invalid input for oink code'} unless (
 269             ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/)  ||
 270             ($snortsettings{'RULES'} eq 'nothing' ) ||
 271             ($snortsettings{'RULES'} eq 'emerging' ) ||
 272             ($snortsettings{'RULES'} eq 'community' ));
 273
 274         &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 275         if ($snortsettings{'ENABLE_SNORT'} eq 'on')
 276         {
 277                 system ('/usr/bin/touch', "${General::swroot}/snort/enable");
 278         } else {
 279                 unlink "${General::swroot}/snort/enable";
 280         }
 281         if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
 282         {
 283                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
 284         } else {
 285                 unlink "${General::swroot}/snort/enable_green";
 286         }
 287         if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
 288         {
 289                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
 290         } else {
 291                 unlink "${General::swroot}/snort/enable_blue";
 292         }
 293         if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
 294         {
 295                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
 296         } else {
 297                 unlink "${General::swroot}/snort/enable_orange";
 298         }
 299         if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
 300         {
 301                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
 302         } else {
 303                 unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
 304         }
 305
 306         system('/usr/local/bin/snortctrl restart >/dev/null');
 307
 308 }
 309
 310          # INSTALLMD5 is not in the form, so not retrieved by getcgihash
 311         &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 312
 313 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} || $snortsettings{'ACTION'} eq $Lang::tr{'upload new ruleset'}) {
 314
 315         my @df = `/bin/df -B M /var`;
 316         foreach my $line (@df) {
 317                 next if $line =~ m/^Filesystem/;
 318                 my $return;
 319
 320                 if ($line =~ m/dev/ ) {
 321                 $line =~ m/^.* (\d+)M.*$/;
 322                 my @temp = split(/ +/,$line);
 323                         if ($1<300) {
 324                                 $errormessage = "$Lang::tr{'not enough disk space'} < 300MB, /var $1MB";
 325                         } else {
 326
 327                                 if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} ){
 328
 329                                         &downloadrulesfile();
 330                                         sleep(3);
 331                                         $return = `cat /var/tmp/log 2>/dev/null`;
 332
 333                                 } elsif ( $snortsettings{'ACTION'} eq $Lang::tr{'upload new ruleset'} ) {
 334                                         my $upload = $a->param("UPLOAD");
 335                                         open UPLOADFILE, ">/var/tmp/snortrules.tar.gz";
 336                                         binmode $upload;
 337                                         while ( <$upload> ) {
 338                                         print UPLOADFILE;
 339                                         }
 340                                         close UPLOADFILE;
 341                                 }
 342
 343                                         if ($return =~ "ERROR"){
 344                                                 $errormessage = "<br /><pre>".$return."</pre>";
 345                                         } else {
 346                                                 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 &");
 347                                                 sleep(2);
 348                                         }
 349                         }
 350                 }
 351         }
 352 }
 353
 354 $checked{'ENABLE_SNORT'}{'off'} = '';
 355 $checked{'ENABLE_SNORT'}{'on'} = '';
 356 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 357 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 358 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 359 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 360 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 361 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 362 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 363 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 364 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 365 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 366 $selected{'RULES'}{'nothing'} = '';
 367 $selected{'RULES'}{'community'} = '';
 368 $selected{'RULES'}{'emerging'} = '';
 369 $selected{'RULES'}{'registered'} = '';
 370 $selected{'RULES'}{'subscripted'} = '';
 371 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 372
 373 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 374
 375 ####################### Added for snort rules control #################################
 376 print "<script type='text/javascript' src='/include/snortupdateutility.js'></script>";
 377 print <<END
 378 <style type="text/css">
 379 <!--
 380 .section {
 381         border: groove;
 382 }
 383 .row1color {
 384         border: ridge;
 385         background-color: $color{'color22'};
 386 }
 387 .row2color {
 388         border: ridge;
 389         background-color: $color{'color20'};
 390 }
 391 .rowselected {
 392         border: double #FF0000;
 393         background-color: #DCDCDC;
 394 }
 395 -->
 396 </style>
 397 END
 398 ;
 399 #######################  End added for snort rules control  #################################
 400
 401 &Header::openbigbox('100%', 'left', '', $errormessage);
 402
 403 ###############
 404 # DEBUG DEBUG
 405 # &Header::openbox('100%', 'left', 'DEBUG');
 406 # my $debugCount = 0;
 407 # foreach my $line (sort keys %snortsettings) {
 408 # print "$line = $snortsettings{$line}<br />\n";
 409 # $debugCount++;
 410 # }
 411 # print "&nbsp;Count: $debugCount\n";
 412 # &Header::closebox();
 413 # DEBUG DEBUG
 414 ###############
 415
 416 if ($errormessage) {
 417         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 418         print "<class name='base'>$errormessage\n";
 419         print "&nbsp;</class>\n";
 420         &Header::closebox();
 421 }
 422
 423 my $return = `pidof oinkmaster.pl -x`;
 424 chomp($return);
 425 if ($return) {
 426         &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='10;'>" );
 427         print <<END;
 428         <table>
 429                 <tr><td>
 430                                 <img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' />&nbsp;
 431                         <td>
 432                                 $Lang::tr{'snort working'}
 433                 <tr><td colspan='2' align='center'>
 434                         <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 435                                 <input type='image' alt='$Lang::tr{'reload'}' title='$Lang::tr{'reload'}' src='/images/view-refresh.png' />
 436                         </form>
 437                 <tr><td colspan='2' align='left'><pre>
 438 END
 439         my @output = `tail -20 /var/tmp/log`;
 440         foreach (@output) {
 441                 print "$_";
 442         }
 443         print <<END;
 444                         </pre>
 445                 </table>
 446 END
 447         &Header::closebox();
 448         &Header::closebigbox();
 449         &Header::closepage();
 450         exit;
 451         refreshpage();
 452 }
 453
 454 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'});
 455 print <<END
 456 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 457 <tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
 458 END
 459 ;
 460 if ($netsettings{'BLUE_DEV'} ne '') {
 461   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />   BLUE Snort";
 462 }
 463 if ($netsettings{'ORANGE_DEV'} ne '') {
 464   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />   ORANGE Snort";
 465 }
 466   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />   RED Snort";
 467
 468 print <<END
 469 </td></tr>
 470 <tr>
 471         <td><br><br></td>
 472 </tr>
 473 <tr>
 474         <td><b>$Lang::tr{'ids rules update'}</b></td>
 475 </tr>
 476 <tr>
 477         <td><select name='RULES'>
 478                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 479                                 <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option>
 480                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 481                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 482                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 483                         </select>
 484         </td>
 485 </tr>
 486 <tr>
 487         <td><br />
 488                 $Lang::tr{'ids rules license'} <a href='https://www.snort.org/subscribe' target='_blank'>www.snort.org</a>$Lang::tr{'ids rules license1'}<br /><br />
 489                 $Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}
 490         </td>
 491 </tr>
 492 <tr>
 493         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 494 </tr>
 495 <tr>
 496         <td width='30%' align='left'><br><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 497 END
 498 ;
 499 if ( -e "/var/tmp/snortrules.tar.gz"){
 500         my @Info = stat("/var/tmp/snortrules.tar.gz");
 501         $snortsettings{'INSTALLDATE'} = localtime($Info[9]);
 502 }
 503 print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 504
 505 print <<END
 506 </tr>
 507 </table>
 508 <br><br>
 509 <table width='100%'>
 510 <tr>
 511         <td align='right'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 512 </tr>
 513 </table>
 514 </form>
 515 END
 516 ;
 517
 518 if ($results ne '') {
 519         print "$results";
 520 }
 521
 522 &Header::closebox();
 523
 524 ####################### Added for snort rules control #################################
 525 if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable_green" || -e "${General::swroot}/snort/enable_blue" || -e "${General::swroot}/snort/enable_orange" ) {
 526         &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 527                 # Output display table for rule files
 528                 print "<table width='100%'><tr><td valign='top'><table>";
 529
 530                 print "<form method='post'>";
 531
 532                 # Local vars
 533                 my $ruledisplaycnt = 1;
 534                 my $rulecnt = keys %snortrules;
 535                 $rulecnt++;
 536                 $rulecnt = $rulecnt / 2;
 537
 538                 # Loop over each rule file
 539                 foreach my $rulefile (sort keys(%snortrules)) {
 540                         my $rulechecked = '';
 541
 542                         # Hide inkompatible Block rules
 543                         if ($rulefile =~'-BLOCK.rules') {
 544                                 next;
 545                         }
 546
 547                         # Check if reached half-way through rule file rules to start new column
 548                 if ($ruledisplaycnt > $rulecnt) {
 549                                 print "</table></td><td valign='top'><table>";
 550                                 $ruledisplaycnt = 0;
 551                         }
 552
 553                         # Check if rule file is enabled
 554                         if ($snortrules{$rulefile}{"State"} eq 'Enabled') {
 555                                 $rulechecked = 'CHECKED';
 556                         }
 557
 558                         # Create rule file link, vars array, and display flag
 559                         my $rulefilelink = "?RULEFILE=$rulefile";
 560                         my $rulefiletoclose = '';
 561                         my @queryvars = ();
 562                         my $displayrulefilerules = 0;
 563
 564                         # Check for passed in query string
 565                         if ($ENV{'QUERY_STRING'}) {
 566                                 # Split out vars
 567                                 @queryvars = split(/\&/, $ENV{'QUERY_STRING'});
 568
 569                                 # Loop over values
 570                                 foreach $value (@queryvars) {
 571                                         # Split out var pairs
 572                                         ($var, $linkedrulefile) = split(/=/, $value);
 573
 574                                         # Check if var is 'RULEFILE'
 575                                         if ($var eq 'RULEFILE') {
 576                                                 # Check if rulefile equals linkedrulefile
 577                                                 if ($rulefile eq $linkedrulefile) {
 578                                                         # Set display flag
 579                                                         $displayrulefilerules = 1;
 580
 581                                                         # Strip out rulefile from rulefilelink
 582                                                         $rulefilelink =~ s/RULEFILE=$linkedrulefile//g;
 583                                                 } else {
 584                                                         # Add linked rule file to rulefilelink
 585                                                         $rulefilelink .= "&RULEFILE=$linkedrulefile";
 586                                                 }
 587                                         }
 588                                 }
 589                         }
 590
 591                         # Strip out extra & & ? from rulefilelink
 592                         $rulefilelink =~ s/^\?\&/\?/i;
 593
 594                         # Check for a single '?' and replace with page for proper link display
 595                         if ($rulefilelink eq '?') {
 596                                 $rulefilelink = "ids.cgi";
 597                         }
 598
 599                         # Output rule file name and checkbox
 600                         print "<tr><td class='base' valign='top'><input type='checkbox' NAME='SNORT_RULE_$rulefile' $rulechecked> <a href='$rulefilelink'>$rulefile</a></td></tr>";
 601                         print "<tr><td class='base' valign='top'>";
 602
 603                         # Check for empty 'Description'
 604                         if ($snortrules{$rulefile}{'Description'} eq '') {
 605                                 print "<table width='100%'><tr><td class='base'>No description available</td></tr>";
 606                         } else {
 607                                 # Output rule file 'Description'
 608                                 print "<table width='100%'><tr><td class='base'>$snortrules{$rulefile}{'Description'}</td></tr>";
 609                         }
 610
 611                         # Check for display flag
 612                         if ($displayrulefilerules) {
 613                                 # Rule file definition rule display
 614                                 print "<tr><td class='base' valign='top'><table border='0'><tr>";
 615
 616                                 # Local vars
 617                                 my $ruledefdisplaycnt = 0;
 618                                 my $ruledefcnt = keys %{$snortrules{$rulefile}{"Definition"}};
 619                                 $ruledefcnt++;
 620                                 $ruledefcnt = $ruledefcnt / 2;
 621
 622                                 # Loop over rule file rules
 623                                 foreach my $ruledef (sort {$a <=> $b} keys(%{$snortrules{$rulefile}{"Definition"}})) {
 624                                         # Local vars
 625                                         my $ruledefchecked = '';
 626
 627                                         # If have display 2 rules, start new row
 628                                         if (($ruledefdisplaycnt % 2) == 0) {
 629                                                 print "</tr><tr>";
 630                                                 $ruledefdisplaycnt = 0;
 631                                         }
 632
 633                                         # Check for rules state
 634                                         if ($snortrules{$rulefile}{'Definition'}{$ruledef}{'State'} eq 'Enabled') {
 635                                                 $ruledefchecked = 'CHECKED';
 636                                         }
 637
 638                                         # Create rule file rule's checkbox
 639                                         $checkboxname = "SNORT_RULE_$rulefile";
 640                                         $checkboxname .= "_$ruledef";
 641                                         print "<td class='base'><input type='checkbox' NAME='$checkboxname' $ruledefchecked> $snortrules{$rulefile}{'Definition'}{$ruledef}{'Description'}</td>";
 642
 643                                         # Increment count
 644                                         $ruledefdisplaycnt++;
 645                                 }
 646
 647                                 # If do not have second rule for row, create empty cell
 648                                 if (($ruledefdisplaycnt % 2) != 0) {
 649                                         print "<td class='base'></td>";
 650                                 }
 651
 652                                 # Close display table
 653                                 print "</tr></table></td></tr>";
 654                 }
 655
 656                         # Close display table
 657                         print "</table>";
 658
 659                         # Increment ruledisplaycnt
 660                 $ruledisplaycnt++;
 661                 }
 662         print "</td></tr></table></td></tr></table>";
 663         print <<END
 664 <table width='100%'>
 665 <tr>
 666         <td width='100%' align='right'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
 667                 &nbsp; <!-- space for future online help link -->
 668         </td>
 669 </tr>
 670 </table>
 671 </form>
 672 END
 673 ;
 674         &Header::closebox();
 675 }
 676
 677 #######################  End added for snort rules control  #################################
 678 &Header::closebigbox();
 679 &Header::closepage();
 680
 681 sub downloadrulesfile {
 682         my $peer;
 683         my $peerport;
 684
 685         unlink("/var/tmp/log");
 686
 687         unless (-e "${General::swroot}/red/active") {
 688                 $errormessage = $Lang::tr{'could not download latest updates'};
 689                 return undef;
 690         }
 691
 692         my %proxysettings=();
 693         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 694
 695         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 696                 ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 697         }
 698
 699         if ($peer) {
 700                 system("wget -r --proxy=on --proxy-user=$proxysettings{'UPSTREAM_USER'} --proxy-passwd=$proxysettings{'UPSTREAM_PASSWORD'} -e http_proxy=http://$peer:$peerport/ -o /var/tmp/log --no-check-certificate --output-document=/var/tmp/snortrules.tar.gz $url");
 701         } else {
 702                 system("wget -r --no-check-certificate -o /var/tmp/log --output-document=/var/tmp/snortrules.tar.gz $url");
 703         }
 704 }