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'>$Lang::tr{'pagerefresh'}</font></center>";&Header::closebox();}
  34
  35 my %color = ();
  36 my %mainsettings = ();
  37 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  38 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  39
  40 my %snortsettings=();
  41 my %checked=();
  42 my %selected=();
  43 my %netsettings=();
  44 our $errormessage = '';
  45 our $results = '';
  46 our $tempdir = '';
  47 our $url='';
  48 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  49
  50 &Header::showhttpheaders();
  51
  52 $snortsettings{'ENABLE_SNORT'} = 'off';
  53 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
  54 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
  55 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
  56 $snortsettings{'ACTION'} = '';
  57 $snortsettings{'RULES'} = '';
  58 $snortsettings{'OINKCODE'} = '';
  59 $snortsettings{'INSTALLDATE'} = '';
  60 $snortsettings{'FILE'} = '';
  61
  62 &Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
  63
  64 ####################### Added for snort rules control #################################
  65 my $snortrulepath; # change to "/etc/snort/rules" - maniac
  66 my @snortconfig;
  67 my $restartsnortrequired = 0;
  68 my %snortrules;
  69 my $rule = '';
  70 my $table1colour = '';
  71 my $table2colour = '';
  72 my $var = '';
  73 my $value = '';
  74 my $tmp = '';
  75 my $linkedrulefile = '';
  76 my $border = '';
  77 my $checkboxname = '';
  78
  79 if (-e "/etc/snort/snort.conf") {
  80
  81
  82         # Open snort.conf file, read it in, close it, and re-open for writing
  83         open(FILE, "/etc/snort/snort.conf") or die 'Unable to read snort config file.';
  84         @snortconfig = <FILE>;
  85         close(FILE);
  86         open(FILE, ">/etc/snort/snort.conf") or die 'Unable to write snort config file.';
  87
  88     my @rules = `cd /etc/snort/rules/ && ls *.rules 2>/dev/null`;    # With this loop the rule might be display with correct rulepath set
  89         foreach (@rules) {
  90         chomp $_;
  91         my $temp = join(";",@snortconfig);
  92     if ( $temp =~ /$_/ ){next;}
  93     else { push(@snortconfig,"#include \$RULE_PATH/".$_);}
  94         }
  95
  96         # Loop over each line
  97         foreach my $line (@snortconfig) {
  98                 # Trim the line
  99                 chomp $line;
 100
 101                 # Check for a line with .rules
 102                 if ($line =~ /\.rules$/) {
 103                         # Parse out rule file name
 104                         $rule = $line;
 105                         $rule =~ s/\$RULE_PATH\///i;
 106                         $rule =~ s/ ?include ?//i;
 107                         $rule =~ s/\#//i;
 108                         my $snortrulepathrule = "$snortrulepath/$rule";
 109
 110                         # Open rule file and read in contents
 111                         open(RULEFILE, "$snortrulepath/$rule") or die "Unable to read snort rule file for reading => $snortrulepath/$rule.";
 112                         my @snortrulefile = <RULEFILE>;
 113                         close(RULEFILE);
 114                         open(RULEFILE, ">$snortrulepath/$rule") or die "Unable to write snort rule file for writing $snortrulepath/$rule";
 115
 116                         # Local vars
 117                         my $dashlinecnt = 0;
 118                         my $desclook = 1;
 119                         my $snortruledesc = '';
 120                         my %snortruledef = ();
 121                         my $rulecnt = 1;
 122
 123                         # Loop over rule file contents
 124                         foreach my $ruleline (@snortrulefile) {
 125                                 chomp $ruleline;
 126
 127                                 # If still looking for a description
 128                                 if ($desclook) {
 129                                         # If line does not start with a # anymore, then done looking for a description
 130                                         if ($ruleline !~ /^\#/) {
 131                                                 $desclook = 0;
 132                                         }
 133
 134                                         # If see more than one dashed line, (start to) create rule file description
 135                                         if ($dashlinecnt > 1) {
 136                                                 # Check for a line starting with a #
 137                                                 if ($ruleline =~ /^\#/ and $ruleline !~ /^\#alert/) {
 138                                                         # Create tempruleline
 139                                                         my $tempruleline = $ruleline;
 140
 141                                                         # Strip off # and clean up line
 142                                                         $tempruleline =~ s/\# ?//i;
 143
 144                                                         # Check for part of a description
 145                                                         if ($snortruledesc eq '') {
 146                                                                 $snortruledesc = $tempruleline;
 147                                                         } else {
 148                                                                 $snortruledesc .= " $tempruleline";
 149                                                         }
 150                                                 } else {
 151                                                         # Must be done
 152                                                         $desclook = 0;
 153                                                 }
 154                                         }
 155
 156                                         # If have a dashed line, increment count
 157                                         if ($ruleline =~ /\# ?\-+/) {
 158                                                 $dashlinecnt++;
 159                                         }
 160                                 } else {
 161                                         # Parse out rule file rule's message for display
 162                                         if ($ruleline =~ /(msg\:\"[^\"]+\";)/) {
 163                                                 my $msg = '';
 164                                                 $msg = $1;
 165                                                 $msg =~ s/msg\:\"//i;
 166                                                 $msg =~ s/\";//i;
 167                                                 $snortruledef{$rulecnt}{'Description'} = $msg;
 168
 169                                                 # Check for 'Save' and rule file displayed in query string
 170                                                 if (($snortsettings{'ACTION'} eq $Lang::tr{'update'}) && ($ENV{'QUERY_STRING'} =~ /$rule/i)) {
 171                                                         # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 172                                                         if ((($ruleline =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"})) || (($ruleline !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}))) {
 173                                                                 $restartsnortrequired = 1;
 174                                                         }
 175
 176                                                         # Strip out leading # from rule line
 177                                                         $ruleline =~ s/\# ?//i;
 178
 179                                                         # Check if it does not exists (which means it is disabled), append a #
 180                                                         if (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}) {
 181                                                                 $ruleline = "#"." $ruleline";
 182                                                         }
 183                                                 }
 184
 185                                                 # Check if ruleline does not begin with a #, so it is enabled
 186                                                 if ($ruleline !~ /^\#/) {
 187                                                         $snortruledef{$rulecnt++}{'State'} = 'Enabled';
 188                                                 } else {
 189                                                         # Otherwise it is disabled
 190                                                         $snortruledef{$rulecnt++}{'State'} = 'Disabled';
 191                                                 }
 192                                         }
 193                                 }
 194
 195                                 # Print ruleline to RULEFILE
 196                                 print RULEFILE "$ruleline\n";
 197                         }
 198
 199                         # Close RULEFILE
 200                         close(RULEFILE);
 201
 202                         # Check for 'Save'
 203                         if ($snortsettings{'ACTION'} eq $Lang::tr{'update'}) {
 204                                 # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 205                                 if ((($line =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule"})) || (($line !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule"}))) {
 206                                         $restartsnortrequired = 1;
 207                                 }
 208
 209                                 # Strip out leading # from rule line
 210                                 $line =~ s/\# ?//i;
 211
 212                                 # Check if it does not exists (which means it is disabled), append a #
 213                                 if (!exists $snortsettings{"SNORT_RULE_$rule"}) {
 214                                         $line = "# $line";
 215                                 }
 216
 217                         }
 218
 219                         # Check for rule state
 220                         if ($line =~ /^\#/) {
 221                                 $snortrules{$rule}{"State"} = "Disabled";
 222                         } else {
 223                                 $snortrules{$rule}{"State"} = "Enabled";
 224                         }
 225
 226                         # Set rule description
 227                         $snortrules{$rule}{"Description"} = $snortruledesc;
 228
 229                         # Loop over sorted rules
 230                         foreach my $ruledef (sort {$a <=> $b} keys(%snortruledef)) {
 231                                 $snortrules{$rule}{"Definition"}{$ruledef}{'Description'} = $snortruledef{$ruledef}{'Description'};
 232                                 $snortrules{$rule}{"Definition"}{$ruledef}{'State'} = $snortruledef{$ruledef}{'State'};
 233                         }
 234
 235                         $snortruledesc = '';
 236                         print FILE "$line\n";
 237                 } elsif ($line =~ /var RULE_PATH/) {
 238                         ($tmp, $tmp, $snortrulepath) = split(' ', $line);
 239                         print FILE "$line\n";
 240                 } else {
 241                         print FILE "$line\n";
 242                 }
 243         }
 244         close(FILE);
 245
 246         if ($restartsnortrequired) {
 247                 system('/usr/local/bin/snortctrl restart >/dev/null');
 248         }
 249 }
 250
 251 #######################  End added for snort rules control  #################################
 252
 253 if ($snortsettings{'OINKCODE'} ne "") {
 254         $errormessage = $Lang::tr{'invalid input for oink code'} unless ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/);
 255 }
 256
 257 if (!$errormessage) {
 258         if ($snortsettings{'RULES'} eq 'subscripted') {
 259                 $url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
 260         } elsif ($snortsettings{'RULES'} eq 'registered') {
 261                 $url=" https://www.snort.org/rules/snortrules-snapshot-29111.tar.gz?oinkcode=$snortsettings{'OINKCODE'}";
 262         } elsif ($snortsettings{'RULES'} eq 'community') {
 263                 $url=" https://www.snort.org/rules/community";
 264         } else {
 265                 $url="http://rules.emergingthreats.net/open/snort-2.9.0/emerging.rules.tar.gz";
 266         }
 267
 268         if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" ) {
 269                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 270                 if ($snortsettings{'ENABLE_SNORT'} eq 'on')
 271                 {
 272                         system ('/usr/bin/touch', "${General::swroot}/snort/enable");
 273                 } else {
 274                         unlink "${General::swroot}/snort/enable";
 275                 }
 276                 if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
 277                 {
 278                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
 279                 } else {
 280                         unlink "${General::swroot}/snort/enable_green";
 281                 }
 282                 if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
 283                 {
 284                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
 285                 } else {
 286                         unlink "${General::swroot}/snort/enable_blue";
 287                 }
 288                 if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
 289                 {
 290                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
 291                 } else {
 292                         unlink "${General::swroot}/snort/enable_orange";
 293                 }
 294                 if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
 295                 {
 296                         system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
 297                 } else {
 298                         unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
 299                 }
 300
 301                 system('/usr/local/bin/snortctrl restart >/dev/null');
 302         }
 303
 304         # INSTALLMD5 is not in the form, so not retrieved by getcgihash
 305         &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 306
 307         if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
 308                 my @df = `/bin/df -B M /var`;
 309                 foreach my $line (@df) {
 310                         next if $line =~ m/^Filesystem/;
 311                         my $return;
 312
 313                         if ($line =~ m/dev/ ) {
 314                                 $line =~ m/^.* (\d+)M.*$/;
 315                                 my @temp = split(/ +/,$line);
 316                                 if ($1<300) {
 317                                         $errormessage = "$Lang::tr{'not enough disk space'} < 300MB, /var $1MB";
 318                                 } else {
 319                                         if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
 320                                                 &downloadrulesfile();
 321                                                 sleep(3);
 322                                                 $return = `cat /var/tmp/log 2>/dev/null`;
 323
 324                                         }
 325
 326                                         if ($return =~ "ERROR") {
 327                                                 $errormessage = "<br /><pre>".$return."</pre>";
 328                                         } else {
 329                                                 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 &");
 330                                                 sleep(2);
 331                                         }
 332                                 }
 333                         }
 334                 }
 335         }
 336 }
 337
 338 $checked{'ENABLE_SNORT'}{'off'} = '';
 339 $checked{'ENABLE_SNORT'}{'on'} = '';
 340 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 341 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 342 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 343 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 344 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 345 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 346 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 347 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 348 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 349 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 350 $selected{'RULES'}{'nothing'} = '';
 351 $selected{'RULES'}{'community'} = '';
 352 $selected{'RULES'}{'emerging'} = '';
 353 $selected{'RULES'}{'registered'} = '';
 354 $selected{'RULES'}{'subscripted'} = '';
 355 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 356
 357 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 358
 359 ####################### Added for snort rules control #################################
 360 print "<script type='text/javascript' src='/include/snortupdateutility.js'></script>";
 361 print <<END
 362 <style type="text/css">
 363 <!--
 364 .section {
 365         border: groove;
 366 }
 367 .row1color {
 368         border: ridge;
 369         background-color: $color{'color22'};
 370 }
 371 .row2color {
 372         border: ridge;
 373         background-color: $color{'color20'};
 374 }
 375 .rowselected {
 376         border: double #FF0000;
 377         background-color: #DCDCDC;
 378 }
 379 -->
 380 </style>
 381 END
 382 ;
 383 #######################  End added for snort rules control  #################################
 384
 385 &Header::openbigbox('100%', 'left', '', $errormessage);
 386
 387 ###############
 388 # DEBUG DEBUG
 389 # &Header::openbox('100%', 'left', 'DEBUG');
 390 # my $debugCount = 0;
 391 # foreach my $line (sort keys %snortsettings) {
 392 # print "$line = $snortsettings{$line}<br />\n";
 393 # $debugCount++;
 394 # }
 395 # print "&nbsp;Count: $debugCount\n";
 396 # &Header::closebox();
 397 # DEBUG DEBUG
 398 ###############
 399
 400 if ($errormessage) {
 401         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 402         print "<class name='base'>$errormessage\n";
 403         print "&nbsp;</class>\n";
 404         &Header::closebox();
 405 }
 406
 407 my $return = `pidof oinkmaster.pl -x`;
 408 chomp($return);
 409 if ($return) {
 410         &Header::openbox( 'Waiting', 1, "<meta http-equiv='refresh' content='10;'>" );
 411         print <<END;
 412         <table>
 413                 <tr><td>
 414                                 <img src='/images/indicator.gif' alt='$Lang::tr{'aktiv'}' />&nbsp;
 415                         <td>
 416                                 $Lang::tr{'snort working'}
 417                 <tr><td colspan='2' align='center'>
 418                         <form method='post' action='$ENV{'SCRIPT_NAME'}'>
 419                                 <input type='image' alt='$Lang::tr{'reload'}' title='$Lang::tr{'reload'}' src='/images/view-refresh.png' />
 420                         </form>
 421                 <tr><td colspan='2' align='left'><pre>
 422 END
 423         my @output = `tail -20 /var/tmp/log`;
 424         foreach (@output) {
 425                 print "$_";
 426         }
 427         print <<END;
 428                         </pre>
 429                 </table>
 430 END
 431         &Header::closebox();
 432         &Header::closebigbox();
 433         &Header::closepage();
 434         exit;
 435         refreshpage();
 436 }
 437
 438 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system'});
 439 print <<END
 440 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 441 <tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
 442 END
 443 ;
 444 if ($netsettings{'BLUE_DEV'} ne '') {
 445   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />   BLUE Snort";
 446 }
 447 if ($netsettings{'ORANGE_DEV'} ne '') {
 448   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />   ORANGE Snort";
 449 }
 450   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />   RED Snort";
 451
 452 print <<END
 453 </td></tr>
 454 <tr>
 455         <td><br><br></td>
 456 </tr>
 457 <tr>
 458         <td><b>$Lang::tr{'ids rules update'}</b></td>
 459 </tr>
 460 <tr>
 461         <td><select name='RULES'>
 462                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 463                                 <option value='emerging' $selected{'RULES'}{'emerging'} >$Lang::tr{'emerging rules'}</option>
 464                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 465                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 466                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 467                         </select>
 468         </td>
 469 </tr>
 470 <tr>
 471         <td><br />
 472                 $Lang::tr{'ids rules license'} <a href='https://www.snort.org/subscribe' target='_blank'>www.snort.org</a>$Lang::tr{'ids rules license1'}<br /><br />
 473                 $Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}
 474         </td>
 475 </tr>
 476 <tr>
 477         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 478 </tr>
 479 <tr>
 480         <td width='30%' align='left'><br><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 481 END
 482 ;
 483 if ( -e "/var/tmp/snortrules.tar.gz"){
 484         my @Info = stat("/var/tmp/snortrules.tar.gz");
 485         $snortsettings{'INSTALLDATE'} = localtime($Info[9]);
 486 }
 487 print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 488
 489 print <<END
 490 </tr>
 491 </table>
 492 <br><br>
 493 <table width='100%'>
 494 <tr>
 495         <td align='right'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 496 </tr>
 497 </table>
 498 </form>
 499 END
 500 ;
 501
 502 if ($results ne '') {
 503         print "$results";
 504 }
 505
 506 &Header::closebox();
 507
 508 ####################### Added for snort rules control #################################
 509 if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable_green" || -e "${General::swroot}/snort/enable_blue" || -e "${General::swroot}/snort/enable_orange" ) {
 510         &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 511                 # Output display table for rule files
 512                 print "<table width='100%'><tr><td valign='top'><table>";
 513
 514                 print "<form method='post'>";
 515
 516                 # Local vars
 517                 my $ruledisplaycnt = 1;
 518                 my $rulecnt = keys %snortrules;
 519                 $rulecnt++;
 520                 $rulecnt = $rulecnt / 2;
 521
 522                 # Loop over each rule file
 523                 foreach my $rulefile (sort keys(%snortrules)) {
 524                         my $rulechecked = '';
 525
 526                         # Hide inkompatible Block rules
 527                         if ($rulefile =~'-BLOCK.rules') {
 528                                 next;
 529                         }
 530
 531                         # Check if reached half-way through rule file rules to start new column
 532                 if ($ruledisplaycnt > $rulecnt) {
 533                                 print "</table></td><td valign='top'><table>";
 534                                 $ruledisplaycnt = 0;
 535                         }
 536
 537                         # Check if rule file is enabled
 538                         if ($snortrules{$rulefile}{"State"} eq 'Enabled') {
 539                                 $rulechecked = 'CHECKED';
 540                         }
 541
 542                         # Create rule file link, vars array, and display flag
 543                         my $rulefilelink = "?RULEFILE=$rulefile";
 544                         my $rulefiletoclose = '';
 545                         my @queryvars = ();
 546                         my $displayrulefilerules = 0;
 547
 548                         # Check for passed in query string
 549                         if ($ENV{'QUERY_STRING'}) {
 550                                 # Split out vars
 551                                 @queryvars = split(/\&/, $ENV{'QUERY_STRING'});
 552
 553                                 # Loop over values
 554                                 foreach $value (@queryvars) {
 555                                         # Split out var pairs
 556                                         ($var, $linkedrulefile) = split(/=/, $value);
 557
 558                                         # Check if var is 'RULEFILE'
 559                                         if ($var eq 'RULEFILE') {
 560                                                 # Check if rulefile equals linkedrulefile
 561                                                 if ($rulefile eq $linkedrulefile) {
 562                                                         # Set display flag
 563                                                         $displayrulefilerules = 1;
 564
 565                                                         # Strip out rulefile from rulefilelink
 566                                                         $rulefilelink =~ s/RULEFILE=$linkedrulefile//g;
 567                                                 } else {
 568                                                         # Add linked rule file to rulefilelink
 569                                                         $rulefilelink .= "&RULEFILE=$linkedrulefile";
 570                                                 }
 571                                         }
 572                                 }
 573                         }
 574
 575                         # Strip out extra & & ? from rulefilelink
 576                         $rulefilelink =~ s/^\?\&/\?/i;
 577
 578                         # Check for a single '?' and replace with page for proper link display
 579                         if ($rulefilelink eq '?') {
 580                                 $rulefilelink = "ids.cgi";
 581                         }
 582
 583                         # Output rule file name and checkbox
 584                         print "<tr><td class='base' valign='top'><input type='checkbox' NAME='SNORT_RULE_$rulefile' $rulechecked> <a href='$rulefilelink'>$rulefile</a></td></tr>";
 585                         print "<tr><td class='base' valign='top'>";
 586
 587                         # Check for empty 'Description'
 588                         if ($snortrules{$rulefile}{'Description'} eq '') {
 589                                 print "<table width='100%'><tr><td class='base'>No description available</td></tr>";
 590                         } else {
 591                                 # Output rule file 'Description'
 592                                 print "<table width='100%'><tr><td class='base'>$snortrules{$rulefile}{'Description'}</td></tr>";
 593                         }
 594
 595                         # Check for display flag
 596                         if ($displayrulefilerules) {
 597                                 # Rule file definition rule display
 598                                 print "<tr><td class='base' valign='top'><table border='0'><tr>";
 599
 600                                 # Local vars
 601                                 my $ruledefdisplaycnt = 0;
 602                                 my $ruledefcnt = keys %{$snortrules{$rulefile}{"Definition"}};
 603                                 $ruledefcnt++;
 604                                 $ruledefcnt = $ruledefcnt / 2;
 605
 606                                 # Loop over rule file rules
 607                                 foreach my $ruledef (sort {$a <=> $b} keys(%{$snortrules{$rulefile}{"Definition"}})) {
 608                                         # Local vars
 609                                         my $ruledefchecked = '';
 610
 611                                         # If have display 2 rules, start new row
 612                                         if (($ruledefdisplaycnt % 2) == 0) {
 613                                                 print "</tr><tr>";
 614                                                 $ruledefdisplaycnt = 0;
 615                                         }
 616
 617                                         # Check for rules state
 618                                         if ($snortrules{$rulefile}{'Definition'}{$ruledef}{'State'} eq 'Enabled') {
 619                                                 $ruledefchecked = 'CHECKED';
 620                                         }
 621
 622                                         # Create rule file rule's checkbox
 623                                         $checkboxname = "SNORT_RULE_$rulefile";
 624                                         $checkboxname .= "_$ruledef";
 625                                         print "<td class='base'><input type='checkbox' NAME='$checkboxname' $ruledefchecked> $snortrules{$rulefile}{'Definition'}{$ruledef}{'Description'}</td>";
 626
 627                                         # Increment count
 628                                         $ruledefdisplaycnt++;
 629                                 }
 630
 631                                 # If do not have second rule for row, create empty cell
 632                                 if (($ruledefdisplaycnt % 2) != 0) {
 633                                         print "<td class='base'></td>";
 634                                 }
 635
 636                                 # Close display table
 637                                 print "</tr></table></td></tr>";
 638                 }
 639
 640                         # Close display table
 641                         print "</table>";
 642
 643                         # Increment ruledisplaycnt
 644                 $ruledisplaycnt++;
 645                 }
 646         print "</td></tr></table></td></tr></table>";
 647         print <<END
 648 <table width='100%'>
 649 <tr>
 650         <td width='100%' align='right'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
 651                 &nbsp; <!-- space for future online help link -->
 652         </td>
 653 </tr>
 654 </table>
 655 </form>
 656 END
 657 ;
 658         &Header::closebox();
 659 }
 660
 661 #######################  End added for snort rules control  #################################
 662 &Header::closebigbox();
 663 &Header::closepage();
 664
 665 sub downloadrulesfile {
 666         my $peer;
 667         my $peerport;
 668
 669         unlink("/var/tmp/log");
 670
 671         unless (-e "${General::swroot}/red/active") {
 672                 $errormessage = $Lang::tr{'could not download latest updates'};
 673                 return undef;
 674         }
 675
 676         my %proxysettings=();
 677         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 678
 679         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 680                 ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 681         }
 682
 683         if ($peer) {
 684                 system("wget -r --proxy=on --proxy-user=$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");
 685         } else {
 686                 system("wget -r -o /var/tmp/log --output-document=/var/tmp/snortrules.tar.gz $url");
 687         }
 688 }