html/cgi-bin/ids.cgi

   1 #!/usr/bin/perl
   2 ###############################################################################
   3 #                                                                             #
   4 # IPFire.org - A linux based firewall                                         #
   5 # Copyright (C) 2007  Michael Tremer & Christian Schmidt                      #
   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
  23 use LWP::UserAgent;
  24 use File::Copy;
  25 use File::Temp qw/ tempfile tempdir /;
  26 use strict;
  27
  28 # enable only the following on debugging purpose
  29 #use warnings;
  30 #use CGI::Carp 'fatalsToBrowser';
  31
  32 require '/var/ipfire/general-functions.pl';
  33 require "${General::swroot}/lang.pl";
  34 require "${General::swroot}/header.pl";
  35
  36 my %color = ();
  37 my %mainsettings = ();
  38 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  39 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  40
  41 my %snortsettings=();
  42 my %checked=();
  43 my %selected=();
  44 my %netsettings=();
  45 our $errormessage = '';
  46 our $md5 = '0';# not '' to avoid displaying the wrong message when INSTALLMD5 not set
  47 our $realmd5 = '';
  48 our $results = '';
  49 our $tempdir = '';
  50 our $url='';
  51 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  52
  53 &Header::showhttpheaders();
  54
  55 $snortsettings{'ENABLE_SNORT'} = 'off';
  56 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
  57 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
  58 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
  59 $snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} = 'off';
  60 $snortsettings{'ENABLE_GUARDIAN'} = 'off';
  61 $snortsettings{'GUARDIAN_INTERFACE'} = `cat /var/ipfire/red/iface`;
  62 $snortsettings{'GUARDIAN_HOSTGATEWAYBYTE'} = '1';
  63 $snortsettings{'GUARDIAN_LOGFILE'} = '/var/log/guardian/guardian.log';
  64 $snortsettings{'GUARDIAN_ALERTFILE'} = '/var/log/snort/alert';
  65 $snortsettings{'GUARDIAN_IGNOREFILE'} = '/var/ipfire/guardian/guardian.ignore';
  66 $snortsettings{'GUARDIAN_TARGETFILE'} = '/var/ipfire/guardian/guardian.target';
  67 $snortsettings{'GUARDIAN_TIMELIMIT'} = '86400';
  68 $snortsettings{'GUARDIAN_IGNOREFILE_CONTENT'} = `cat $snortsettings{'GUARDIAN_IGNOREFILE'}`;
  69 $snortsettings{'ACTION'} = '';
  70 $snortsettings{'ACTION2'} = '';
  71 $snortsettings{'RULES'} = '';
  72 $snortsettings{'OINKCODE'} = '';
  73 $snortsettings{'INSTALLDATE'} = '';
  74 $snortsettings{'INSTALLMD5'} = '';
  75
  76 &Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
  77
  78 ####################### Added for snort rules control #################################
  79 my $snortrulepath; # change to "/etc/snort/rules" - maniac
  80 my @snortconfig;
  81 my $restartsnortrequired = 0;
  82 my %snortrules;
  83 my $rule = '';
  84 my $table1colour = '';
  85 my $table2colour = '';
  86 my $var = '';
  87 my $value = '';
  88 my $tmp = '';
  89 my $linkedrulefile = '';
  90 my $border = '';
  91 my $checkboxname = '';
  92
  93 if (-e "/etc/snort/snort.conf") {
  94
  95
  96         # Open snort.conf file, read it in, close it, and re-open for writing
  97         open(FILE, "/etc/snort/snort.conf") or die 'Unable to read snort config file.';
  98         @snortconfig = <FILE>;
  99         close(FILE);
 100         open(FILE, ">/etc/snort/snort.conf") or die 'Unable to write snort config file.';
 101
 102     my @rules = `cd /etc/snort/rules/ && ls *.rules`;    # With this loop the rule might be display with correct rulepath set
 103         foreach (@rules) {
 104         chomp $_;
 105         my $temp = join(";",@snortconfig);
 106     if ( $temp =~ /$_/ ){next;}
 107     else { push(@snortconfig,"#include \$RULE_PATH/".$_);}
 108         }
 109
 110         # Loop over each line
 111         foreach my $line (@snortconfig) {
 112                 # Trim the line
 113                 chomp $line;
 114
 115                 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'}) {
 116                         # Check for preprocessor settings
 117                         if ($line =~ /preprocessor http_inspect/) {
 118                                 # Strip out leading # from rule line
 119                                 $line =~ s/\# ?//i;
 120                                 if (($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'off')) {
 121                                         $line = "# $line";
 122                                 }
 123                         }
 124                 }
 125
 126                 # Check for a line with .rules
 127                 if ($line =~ /\.rules$/) {
 128                         # Parse out rule file name
 129                         $rule = $line;
 130                         $rule =~ s/\$RULE_PATH\///i;
 131                         $rule =~ s/ ?include ?//i;
 132                         $rule =~ s/\#//i;
 133                         my $snortrulepathrule = "$snortrulepath/$rule";
 134
 135                         # Open rule file and read in contents
 136                         open(RULEFILE, "$snortrulepath/$rule") or die "Unable to read snort rule file for reading => $snortrulepath/$rule.";
 137                         my @snortrulefile = <RULEFILE>;
 138                         close(RULEFILE);
 139                         open(RULEFILE, ">$snortrulepath/$rule") or die "Unable to write snort rule file for writing $snortrulepath/$rule";
 140
 141                         # Local vars
 142                         my $dashlinecnt = 0;
 143                         my $desclook = 1;
 144                         my $snortruledesc = '';
 145                         my %snortruledef = ();
 146                         my $rulecnt = 1;
 147
 148                         # Loop over rule file contents
 149                         foreach my $ruleline (@snortrulefile) {
 150                                 chomp $ruleline;
 151
 152                                 # If still looking for a description
 153                                 if ($desclook) {
 154                                         # If line does not start with a # anymore, then done looking for a description
 155                                         if ($ruleline !~ /^\#/) {
 156                                                 $desclook = 0;
 157                                         }
 158
 159                                         # If see more than one dashed line, (start to) create rule file description
 160                                         if ($dashlinecnt > 1) {
 161                                                 # Check for a line starting with a #
 162                                                 if ($ruleline =~ /^\#/) {
 163                                                         # Create tempruleline
 164                                                         my $tempruleline = $ruleline;
 165
 166                                                         # Strip off # and clean up line
 167                                                         $tempruleline =~ s/\# ?//i;
 168
 169                                                         # Check for part of a description
 170                                                         if ($snortruledesc eq '') {
 171                                                                 $snortruledesc = $tempruleline;
 172                                                         } else {
 173                                                                 $snortruledesc .= " $tempruleline";
 174                                                         }
 175                                                 } else {
 176                                                         # Must be done
 177                                                         $desclook = 0;
 178                                                 }
 179                                         }
 180
 181                                         # If have a dashed line, increment count
 182                                         if ($ruleline =~ /\# ?\-+/) {
 183                                                 $dashlinecnt++;
 184                                         }
 185                                 } else {
 186                                         # Parse out rule file rule's message for display
 187                                         if ($ruleline =~ /(msg\:\"[^\"]+\";)/) {
 188                                                 my $msg = '';
 189                                                 $msg = $1;
 190                                                 $msg =~ s/msg\:\"//i;
 191                                                 $msg =~ s/\";//i;
 192                                                 $snortruledef{$rulecnt}{'Description'} = $msg;
 193
 194                                                 # Check for 'Save' and rule file displayed in query string
 195                                                 if (($snortsettings{'ACTION'} eq $Lang::tr{'update'}) && ($ENV{'QUERY_STRING'} =~ /$rule/i)) {
 196                                                         # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 197                                                         if ((($ruleline =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"})) || (($ruleline !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}))) {
 198                                                                 $restartsnortrequired = 1;
 199                                                         }
 200
 201                                                         # Strip out leading # from rule line
 202                                                         $ruleline =~ s/\# ?//i;
 203
 204                                                         # Check if it does not exists (which means it is disabled), append a #
 205                                                         if (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}) {
 206                                                                 $ruleline = "#"." $ruleline";
 207                                                         }
 208                                                 }
 209
 210                                                 # Check if ruleline does not begin with a #, so it is enabled
 211                                                 if ($ruleline !~ /^\#/) {
 212                                                         $snortruledef{$rulecnt++}{'State'} = 'Enabled';
 213                                                 } else {
 214                                                         # Otherwise it is disabled
 215                                                         $snortruledef{$rulecnt++}{'State'} = 'Disabled';
 216                                                 }
 217                                         }
 218                                 }
 219
 220                                 # Print ruleline to RULEFILE
 221                                 print RULEFILE "$ruleline\n";
 222                         }
 223
 224                         # Close RULEFILE
 225                         close(RULEFILE);
 226
 227                         # Check for 'Save'
 228                         if ($snortsettings{'ACTION'} eq $Lang::tr{'update'}) {
 229                                 # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 230                                 if ((($line =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule"})) || (($line !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule"}))) {
 231                                         $restartsnortrequired = 1;
 232                                 }
 233
 234                                 # Strip out leading # from rule line
 235                                 $line =~ s/\# ?//i;
 236
 237                                 # Check if it does not exists (which means it is disabled), append a #
 238                                 if (!exists $snortsettings{"SNORT_RULE_$rule"}) {
 239                                         $line = "# $line";
 240                                 }
 241
 242                         }
 243
 244                         # Check for rule state
 245                         if ($line =~ /^\#/) {
 246                                 $snortrules{$rule}{"State"} = "Disabled";
 247                         } else {
 248                                 $snortrules{$rule}{"State"} = "Enabled";
 249                         }
 250
 251                         # Set rule description
 252                         $snortrules{$rule}{"Description"} = $snortruledesc;
 253
 254                         # Loop over sorted rules
 255                         foreach my $ruledef (sort {$a <=> $b} keys(%snortruledef)) {
 256                                 $snortrules{$rule}{"Definition"}{$ruledef}{'Description'} = $snortruledef{$ruledef}{'Description'};
 257                                 $snortrules{$rule}{"Definition"}{$ruledef}{'State'} = $snortruledef{$ruledef}{'State'};
 258                         }
 259
 260                         $snortruledesc = '';
 261                         print FILE "$line\n";
 262                 } elsif ($line =~ /var RULE_PATH/) {
 263                         ($tmp, $tmp, $snortrulepath) = split(' ', $line);
 264                         print FILE "$line\n";
 265                 } else {
 266                         print FILE "$line\n";
 267                 }
 268         }
 269         close(FILE);
 270
 271         if ($restartsnortrequired) {
 272                 system('/usr/local/bin/snortctrl restart >/dev/null');
 273         }
 274 }
 275
 276 #######################  End added for snort rules control  #################################
 277
 278 if ($snortsettings{'RULES'} eq 'subscripted') {
 279         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.6_s.tar.gz";
 280 } elsif ($snortsettings{'RULES'} eq 'registered') {
 281         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.6.tar.gz";
 282 } else {
 283         $url="http://www.snort.org/pub-bin/downloads.cgi/Download/comm_rules/Community-Rules-CURRENT.tar.gz";
 284 }
 285
 286 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" )
 287 {
 288         $errormessage = $Lang::tr{'invalid input for oink code'} unless (
 289             ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/)  ||
 290             ($snortsettings{'RULESTYPE'} eq 'nothing' )       );
 291
 292         &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 293         if ($snortsettings{'ENABLE_SNORT'} eq 'on')
 294         {
 295                 system ('/usr/bin/touch', "${General::swroot}/snort/enable");
 296         } else {
 297                 unlink "${General::swroot}/snort/enable";
 298         }
 299         if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
 300         {
 301                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
 302         } else {
 303                 unlink "${General::swroot}/snort/enable_green";
 304         }
 305         if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
 306         {
 307                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
 308         } else {
 309                 unlink "${General::swroot}/snort/enable_blue";
 310         }
 311         if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
 312         {
 313                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
 314         } else {
 315                 unlink "${General::swroot}/snort/enable_orange";
 316         }
 317         if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
 318         {
 319                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
 320         } else {
 321                 unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
 322         }
 323         if ($snortsettings{'ENABLE_GUARDIAN'} eq 'on')
 324         {
 325                 system ('/usr/bin/touch', "${General::swroot}/guardian/enable");
 326         } else {
 327                 unlink "${General::swroot}/guardian/enable";
 328         }
 329
 330         system('/usr/local/bin/snortctrl restart >/dev/null');
 331
 332 } elsif ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "guardian" ){
 333                         open(IGNOREFILE, ">$snortsettings{'GUARDIAN_IGNOREFILE'}") or die "Unable to write guardian ignore file $snortsettings{'GUARDIAN_IGNOREFILE'}";
 334                                 print IGNOREFILE $snortsettings{'GUARDIAN_IGNOREFILE_CONTENT'};
 335                         close(IGNOREFILE);
 336                         open(GUARDIAN, ">/var/ipfire/guardian/guardian.conf") or die "Unable to write guardian conf /var/ipfire/guardian/guardian.conf";
 337                                 print GUARDIAN <<END
 338 Interface   $snortsettings{'GUARDIAN_INTERFACE'}
 339 HostGatewayByte   $snortsettings{'GUARDIAN_HOSTGATEWAYBYTE'}
 340 LogFile   $snortsettings{'GUARDIAN_LOGFILE'}
 341 AlertFile   $snortsettings{'GUARDIAN_ALERTFILE'}
 342 IgnoreFile   $snortsettings{'GUARDIAN_IGNOREFILE'}
 343 TargetFile   $snortsettings{'GUARDIAN_TARGETFILE'}
 344 TimeLimit   $snortsettings{'GUARDIAN_TIMELIMIT'}
 345 END
 346 ;
 347                         close(GUARDIAN);
 348                 system('/usr/local/bin/snortctrl restart >/dev/null');
 349 }
 350          # INSTALLMD5 is not in the form, so not retrieved by getcgihash
 351         &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 352
 353 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
 354         $md5 = &getmd5;
 355         if (($snortsettings{'INSTALLMD5'} ne $md5) && defined $md5 ) {
 356                 chomp($md5);
 357                 my $filename = &downloadrulesfile();
 358                 if (defined $filename) {
 359                         # Check MD5sum
 360                         $realmd5 = `/usr/bin/md5sum $filename`;
 361                         chomp ($realmd5);
 362                         $realmd5 =~ s/^(\w+)\s.*$/$1/;
 363                         if ($md5 ne $realmd5) {
 364                                 $errormessage = "$Lang::tr{'invalid md5sum'}";
 365                         } else {
 366                                 $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
 367                                 $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules 2>&1`;
 368                                 $results .= "</pre>";
 369                         }
 370                         unlink ($filename);
 371                 }
 372         }
 373 }
 374
 375 $checked{'ENABLE_SNORT'}{'off'} = '';
 376 $checked{'ENABLE_SNORT'}{'on'} = '';
 377 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 378 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 379 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 380 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 381 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 382 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 383 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 384 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 385 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 386 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 387 $checked{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}{'off'} = '';
 388 $checked{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}{'on'} = '';
 389 $checked{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}{$snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}} = "checked='checked'";
 390 $checked{'ENABLE_GUARDIAN'}{'off'} = '';
 391 $checked{'ENABLE_GUARDIAN'}{'on'} = '';
 392 $checked{'ENABLE_GUARDIAN'}{$snortsettings{'ENABLE_GUARDIAN'}} = "checked='checked'";
 393 $selected{'RULES'}{'nothing'} = '';
 394 $selected{'RULES'}{'community'} = '';
 395 $selected{'RULES'}{'registered'} = '';
 396 $selected{'RULES'}{'subscripted'} = '';
 397 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 398
 399 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 400
 401 ####################### Added for snort rules control #################################
 402 print "<SCRIPT LANGUAGE='JavaScript' SRC='/include/snortupdateutility.js'></SCRIPT>";
 403 print <<END
 404 <STYLE TYPE="text/css">
 405 <!--
 406 .section {
 407         border: groove;
 408 }
 409 .row1color {
 410         border: ridge;
 411         background-color: $color{'color22'};
 412 }
 413 .row2color {
 414         border: ridge;
 415         background-color: $color{'color20'};
 416 }
 417 .rowselected {
 418         border: double #FF0000;
 419         background-color: #DCDCDC;
 420 }
 421 -->
 422 </STYLE>
 423 END
 424 ;
 425 #######################  End added for snort rules control  #################################
 426
 427 &Header::openbigbox('100%', 'left', '', $errormessage);
 428
 429 if ($errormessage) {
 430         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 431         print "<class name='base'>$errormessage\n";
 432         print "&nbsp;</class>\n";
 433         &Header::closebox();
 434 }
 435
 436 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system2'});
 437 print <<END
 438 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 439 <tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
 440 END
 441 ;
 442 if ($netsettings{'BLUE_DEV'} ne '') {
 443   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />   BLUE Snort";
 444 }
 445 if ($netsettings{'ORANGE_DEV'} ne '') {
 446   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />   ORANGE Snort";
 447 }
 448   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />   RED Snort";
 449 if ( -e "/var/ipfire/guardian/guardian.conf" ) {
 450   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_GUARDIAN' $checked{'ENABLE_GUARDIAN'}{'on'} />  Guardian";
 451 }
 452
 453 print <<END
 454 </td></tr>
 455 <tr>
 456         <td><hr /></td>
 457 </tr>
 458 <tr>
 459         <td><b>$Lang::tr{'ids preprocessor'}</b></td>
 460 </tr>
 461 <tr>
 462         <td><input type='checkbox' name='ENABLE_PREPROCESSOR_HTTP_INSPECT' $checked{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}{'on'} />  http_inspect $Lang::tr{'active'}
 463 <tr>
 464         <td><hr /></td>
 465 </tr>
 466 <tr>
 467         <td><b>$Lang::tr{'ids rules update'}</b></td>
 468 </tr>
 469 <tr>
 470         <td><select name='RULES'>
 471                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 472                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 473                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 474                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 475                         </select>
 476         </td>
 477 </tr>
 478 <tr>
 479         <td><br />
 480                 $Lang::tr{'ids rules license'} <a href='http://www.snort.org/' target='_blank'>http://www.snort.org</a>.<br />
 481                 <br />
 482                 $Lang::tr{'ids rules license2'} <a href='http://www.snort.org/reg-bin/userprefs.cgi' target='_blank'>USER PREFERENCES</a>, $Lang::tr{'ids rules license3'}<br />
 483         </td>
 484 </tr>
 485 <tr>
 486         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 487 </tr>
 488 <tr>
 489         <td width='30%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 490 END
 491 ;
 492
 493 if ($snortsettings{'INSTALLMD5'} eq $md5) {
 494         print "&nbsp;$Lang::tr{'rules already up to date'}</td>";
 495 } else {
 496         if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} && $md5 eq $realmd5 ) {
 497                 $snortsettings{'INSTALLMD5'} = $realmd5;
 498                 $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
 499                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 500         }
 501         print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 502 }
 503 print <<END
 504 </tr>
 505 </table>
 506 <hr />
 507 <table width='100%'>
 508 <tr>
 509         <td align='center'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 510 </tr>
 511 </table>
 512 </form>
 513 END
 514 ;
 515
 516 if ($results ne '') {
 517         print "$results";
 518 }
 519
 520 &Header::closebox();
 521
 522 ####################### Added for guardian control ####################################
 523 if ( -e "/var/ipfire/guardian/guardian.conf" ) {
 524         &Header::openbox('100%', 'LEFT', $Lang::tr{'guardian configuration'});
 525 print <<END
 526 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 527 <tr><td align='left' width='40%'>$Lang::tr{'guardian interface'}</td><td align='left'><input type='text' name='INTERFACE' value='$snortsettings{'GUARDIAN_INTERFACE'}' size="30" /></td></tr>
 528 <tr><td align='left' width='40%'>$Lang::tr{'guardian timelimit'}</td><td align='left'><input type='text' name='TIMELIMIT' value='$snortsettings{'GUARDIAN_TIMELIMIT'}' size="30" /></td></tr>
 529 <tr><td align='left' width='40%'>$Lang::tr{'guardian logfile'}</td><td align='left'><input type='text' name='LOGFILE' value='$snortsettings{'GUARDIAN_LOGFILE'}' size="30" /></td></tr>
 530 <tr><td align='left' width='40%'>$Lang::tr{'guardian alertfile'}</td><td align='left'><input type='text' name='ALERTFILE' value='$snortsettings{'GUARDIAN_ALERTFILE'}' size="30" /></td></tr>
 531 <tr><td align='left' width='40%'>$Lang::tr{'guardian ignorefile'}</td><td align='left'><textarea name='IGNOREFILE_CONTENT' cols='32' rows='6' wrap='off'>
 532 END
 533 ;
 534         print `cat /var/ipfire/guardian/guardian.ignore`;
 535 print <<END
 536 </textarea></td></tr>
 537 <tr><td align='center' colspan='2'><input type='hidden' name='ACTION2' value='guardian' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td></tr>
 538 </table>
 539 </form>
 540 END
 541 ;
 542         &Header::closebox();
 543 }
 544
 545
 546
 547
 548 ####################### Added for snort rules control #################################
 549 if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable_green" || -e "${General::swroot}/snort/enable_blue" || -e "${General::swroot}/snort/enable_orange" ) {
 550         &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 551                 # Output display table for rule files
 552                 print "<TABLE width='100%'><TR><TD VALIGN='TOP'><TABLE>";
 553
 554                 print "<form method='post'>";
 555
 556                 # Local vars
 557                 my $ruledisplaycnt = 1;
 558                 my $rulecnt = keys %snortrules;
 559                 $rulecnt++;
 560                 $rulecnt = $rulecnt / 2;
 561
 562                 # Loop over each rule file
 563                 foreach my $rulefile (sort keys(%snortrules)) {
 564                         my $rulechecked = '';
 565
 566                         # Check if reached half-way through rule file rules to start new column
 567                 if ($ruledisplaycnt > $rulecnt) {
 568                                 print "</TABLE></TD><TD VALIGN='TOP'><TABLE>";
 569                                 $ruledisplaycnt = 0;
 570                         }
 571
 572                         # Check if rule file is enabled
 573                         if ($snortrules{$rulefile}{"State"} eq 'Enabled') {
 574                                 $rulechecked = 'CHECKED';
 575                         }
 576
 577                         # Create rule file link, vars array, and display flag
 578                         my $rulefilelink = "?RULEFILE=$rulefile";
 579                         my $rulefiletoclose = '';
 580                         my @queryvars = ();
 581                         my $displayrulefilerules = 0;
 582
 583                         # Check for passed in query string
 584                         if ($ENV{'QUERY_STRING'}) {
 585                                 # Split out vars
 586                                 @queryvars = split(/\&/, $ENV{'QUERY_STRING'});
 587
 588                                 # Loop over values
 589                                 foreach $value (@queryvars) {
 590                                         # Split out var pairs
 591                                         ($var, $linkedrulefile) = split(/=/, $value);
 592
 593                                         # Check if var is 'RULEFILE'
 594                                         if ($var eq 'RULEFILE') {
 595                                                 # Check if rulefile equals linkedrulefile
 596                                                 if ($rulefile eq $linkedrulefile) {
 597                                                         # Set display flag
 598                                                         $displayrulefilerules = 1;
 599
 600                                                         # Strip out rulefile from rulefilelink
 601                                                         $rulefilelink =~ s/RULEFILE=$linkedrulefile//g;
 602                                                 } else {
 603                                                         # Add linked rule file to rulefilelink
 604                                                         $rulefilelink .= "&RULEFILE=$linkedrulefile";
 605                                                 }
 606                                         }
 607                                 }
 608                         }
 609
 610                         # Strip out extra & & ? from rulefilelink
 611                         $rulefilelink =~ s/^\?\&/\?/i;
 612
 613                         # Check for a single '?' and replace with page for proper link display
 614                         if ($rulefilelink eq '?') {
 615                                 $rulefilelink = "ids.cgi";
 616                         }
 617
 618                         # Output rule file name and checkbox
 619                         print "<TR><TD CLASS='base' VALIGN='TOP'><INPUT TYPE='checkbox' NAME='SNORT_RULE_$rulefile' $rulechecked> <A HREF='$rulefilelink'>$rulefile</A></TD></TR>";
 620                         print "<TR><TD CLASS='base' VALIGN='TOP'>";
 621
 622                         # Check for empty 'Description'
 623                         if ($snortrules{$rulefile}{'Description'} eq '') {
 624                                 print "<TABLE WIDTH='100%'><TR><TD CLASS='base'>No description available</TD></TR>";
 625                         } else {
 626                                 # Output rule file 'Description'
 627                                 print "<TABLE WIDTH='100%'><TR><TD CLASS='base'>$snortrules{$rulefile}{'Description'}</TD></TR>";
 628                         }
 629
 630                         # Check for display flag
 631                         if ($displayrulefilerules) {
 632                                 # Rule file definition rule display
 633                                 print "<TR><TD CLASS='base' VALIGN='TOP'><TABLE border=1><TR>";
 634
 635                                 # Local vars
 636                                 my $ruledefdisplaycnt = 0;
 637                                 my $ruledefcnt = keys %{$snortrules{$rulefile}{"Definition"}};
 638                                 $ruledefcnt++;
 639                                 $ruledefcnt = $ruledefcnt / 2;
 640
 641                                 # Loop over rule file rules
 642                                 foreach my $ruledef (sort {$a <=> $b} keys(%{$snortrules{$rulefile}{"Definition"}})) {
 643                                         # Local vars
 644                                         my $ruledefchecked = '';
 645
 646                                         # If have display 2 rules, start new row
 647                                         if (($ruledefdisplaycnt % 2) == 0) {
 648                                                 print "</TR><TR>";
 649                                                 $ruledefdisplaycnt = 0;
 650                                         }
 651
 652                                         # Check for rules state
 653                                         if ($snortrules{$rulefile}{'Definition'}{$ruledef}{'State'} eq 'Enabled') {
 654                                                 $ruledefchecked = 'CHECKED';
 655                                         }
 656
 657                                         # Create rule file rule's checkbox
 658                                         $checkboxname = "SNORT_RULE_$rulefile";
 659                                         $checkboxname .= "_$ruledef";
 660                                         print "<TD CLASS='base'><INPUT TYPE='checkbox' NAME='$checkboxname' $ruledefchecked> $snortrules{$rulefile}{'Definition'}{$ruledef}{'Description'}</TD>";
 661
 662                                         # Increment count
 663                                         $ruledefdisplaycnt++;
 664                                 }
 665
 666                                 # If do not have second rule for row, create empty cell
 667                                 if (($ruledefdisplaycnt % 2) != 0) {
 668                                         print "<TD CLASS='base'></TD>";
 669                                 }
 670
 671                                 # Close display table
 672                                 print "</TR></TABLE></TD></TR>";
 673                 }
 674
 675                         # Close display table
 676                         print "</TABLE>";
 677
 678                         # Increment ruledisplaycnt
 679                 $ruledisplaycnt++;
 680                 }
 681         print "</TD></TR></TABLE></TD></TR></TABLE>";
 682         print <<END
 683 <table width='100%'>
 684 <tr>
 685         <td width='33%'>&nbsp;</td>
 686         <td width='33%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
 687         <td width='33%'>
 688                 &nbsp; <!-- space for future online help link -->
 689         </td>
 690 </tr>
 691 </table>
 692 </form>
 693 END
 694 ;
 695         &Header::closebox();
 696 }
 697
 698 #######################  End added for snort rules control  #################################
 699 &Header::closebigbox();
 700 &Header::closepage();
 701
 702 sub getmd5 {
 703         # Retrieve MD5 sum from $url.md5 file
 704         #
 705         my $md5buf = &geturl("$url.md5");
 706         return undef unless $md5buf;
 707
 708         if (0) { # 1 to debug
 709                 my $filename='';
 710                 my $fh='';
 711                 ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.md5' );
 712                 binmode ($fh);
 713                 syswrite ($fh, $md5buf->content);
 714                 close($fh);
 715         }
 716         return $md5buf->content;
 717 }
 718 sub downloadrulesfile {
 719         my $return = &geturl($url);
 720         return undef unless $return;
 721
 722         if (index($return->content, "\037\213") == -1 ) { # \037\213 is .gz beginning
 723                 $errormessage = $Lang::tr{'invalid loaded file'};
 724                 return undef;
 725         }
 726
 727         my $filename='';
 728         my $fh='';
 729         ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
 730         binmode ($fh);
 731         syswrite ($fh, $return->content);
 732         close($fh);
 733         return $filename;
 734 }
 735
 736 sub geturl ($) {
 737         my $url=$_[0];
 738
 739         unless (-e "${General::swroot}/red/active") {
 740                 $errormessage = $Lang::tr{'could not download latest updates'};
 741                 return undef;
 742         }
 743
 744         my $downloader = LWP::UserAgent->new;
 745         $downloader->timeout(5);
 746
 747         my %proxysettings=();
 748         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 749
 750         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 751                 my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 752                 if ($proxysettings{'UPSTREAM_USER'}) {
 753                         $downloader->proxy("http","http://$proxysettings{'UPSTREAM_USER'}:$proxysettings{'UPSTREAM_PASSWORD'}@"."$peer:$peerport/");
 754                 } else {
 755                         $downloader->proxy("http","http://$peer:$peerport/");
 756                 }
 757         }
 758
 759         my $return = $downloader->get($url,'Cache-Control','no-cache');
 760
 761         if ($return->code == 403) {
 762                 $errormessage = $Lang::tr{'access refused with this oinkcode'};
 763                 return undef;
 764         } elsif (!$return->is_success()) {
 765                 $errormessage = $Lang::tr{'could not download latest updates'};
 766                 return undef;
 767         }
 768
 769         return $return;
 770
 771 }