html/cgi-bin/ids.cgi

   1 #!/usr/bin/perl
   2 #
   3 # SmoothWall CGIs
   4 #
   5 # This code is distributed under the terms of the GPL
   6 #
   7 # (c) The SmoothWall Team
   8 #
   9
  10 use LWP::UserAgent;
  11 use File::Copy;
  12 use File::Temp qw/ tempfile tempdir /;
  13 use strict;
  14
  15 # enable only the following on debugging purpose
  16 use warnings;
  17 use CGI::Carp 'fatalsToBrowser';
  18
  19 require '/var/ipfire/general-functions.pl';
  20 require "${General::swroot}/lang.pl";
  21 require "${General::swroot}/header.pl";
  22
  23 my %color = ();
  24 my %mainsettings = ();
  25 &General::readhash("${General::swroot}/main/settings", \%mainsettings);
  26 &General::readhash("/srv/web/ipfire/html/themes/".$mainsettings{'THEME'}."/include/colors.txt", \%color);
  27
  28 my %snortsettings=();
  29 my %checked=();
  30 my %selected=();
  31 my %netsettings=();
  32 our $errormessage = '';
  33 our $md5 = '0';# not '' to avoid displaying the wrong message when INSTALLMD5 not set
  34 our $realmd5 = '';
  35 our $results = '';
  36 our $tempdir = '';
  37 our $url='';
  38 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  39
  40 &Header::showhttpheaders();
  41
  42 $snortsettings{'ENABLE_SNORT'} = 'off';
  43 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
  44 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
  45 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
  46 $snortsettings{'ENABLE_GUARDIAN'} = 'off';
  47 $snortsettings{'GUARDIAN_INTERFACE'} = `cat /var/ipfire/red/iface`;
  48 $snortsettings{'GUARDIAN_HOSTGATEWAYBYTE'} = '1';
  49 $snortsettings{'GUARDIAN_LOGFILE'} = '/var/log/guardian/guardian.log';
  50 $snortsettings{'GUARDIAN_ALERTFILE'} = '/var/log/snort/alert';
  51 $snortsettings{'GUARDIAN_IGNOREFILE'} = '/var/ipfire/guardian/guardian.ignore';
  52 $snortsettings{'GUARDIAN_TARGETFILE'} = '/var/ipfire/guardian/guardian.target';
  53 $snortsettings{'GUARDIAN_TIMELIMIT'} = '86400';
  54 $snortsettings{'GUARDIAN_IGNOREFILE_CONTENT'} = `cat $snortsettings{'GUARDIAN_IGNOREFILE'}`;
  55 $snortsettings{'ACTION'} = '';
  56 $snortsettings{'ACTION2'} = '';
  57 $snortsettings{'RULES'} = '';
  58 $snortsettings{'OINKCODE'} = '';
  59 $snortsettings{'INSTALLDATE'} = '';
  60 $snortsettings{'INSTALLMD5'} = '';
  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`;    # 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 =~ /^\#/) {
 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 = "# $line";
 215                                 }
 216                         }
 217
 218                         # Check for rule state
 219                         if ($line =~ /^\#/) {
 220                                 $snortrules{$rule}{"State"} = "Disabled";
 221                         } else {
 222                                 $snortrules{$rule}{"State"} = "Enabled";
 223                         }
 224
 225                         # Set rule description
 226                         $snortrules{$rule}{"Description"} = $snortruledesc;
 227
 228                         # Loop over sorted rules
 229                         foreach my $ruledef (sort {$a <=> $b} keys(%snortruledef)) {
 230                                 $snortrules{$rule}{"Definition"}{$ruledef}{'Description'} = $snortruledef{$ruledef}{'Description'};
 231                                 $snortrules{$rule}{"Definition"}{$ruledef}{'State'} = $snortruledef{$ruledef}{'State'};
 232                         }
 233
 234                         $snortruledesc = '';
 235                         print FILE "$line\n";
 236                 } elsif ($line =~ /var RULE_PATH/) {
 237                         ($tmp, $tmp, $snortrulepath) = split(' ', $line);
 238                         print FILE "$line\n";
 239                 } else {
 240                         print FILE "$line\n";
 241                 }
 242         }
 243         close(FILE);
 244
 245         if ($restartsnortrequired) {
 246                 system('/usr/local/bin/snortctrl restart >/dev/null');
 247         }
 248 }
 249
 250 #######################  End added for snort rules control  #################################
 251
 252 if ($snortsettings{'RULES'} eq 'subscripted') {
 253         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-CURRENT_s.tar.gz";
 254 } elsif ($snortsettings{'RULES'} eq 'registered') {
 255         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-CURRENT.tar.gz";
 256 } else {
 257         $url="http://www.snort.org/pub-bin/downloads.cgi/Download/comm_rules/Community-Rules-CURRENT.tar.gz";
 258 }
 259
 260 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" )
 261 {
 262         $errormessage = $Lang::tr{'invalid input for oink code'} unless (
 263             ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/)  ||
 264             ($snortsettings{'RULESTYPE'} eq 'nothing' )       );
 265
 266         &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 267         if ($snortsettings{'ENABLE_SNORT'} eq 'on')
 268         {
 269                 system ('/usr/bin/touch', "${General::swroot}/snort/enable");
 270         } else {
 271                 unlink "${General::swroot}/snort/enable";
 272         }
 273         if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
 274         {
 275                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
 276         } else {
 277                 unlink "${General::swroot}/snort/enable_green";
 278         }
 279         if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
 280         {
 281                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
 282         } else {
 283                 unlink "${General::swroot}/snort/enable_blue";
 284         }
 285         if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
 286         {
 287                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
 288         } else {
 289                 unlink "${General::swroot}/snort/enable_orange";
 290         }
 291         if ($snortsettings{'ENABLE_GUARDIAN'} eq 'on')
 292         {
 293                 system ('/usr/bin/touch', "${General::swroot}/guardian/enable");
 294         } else {
 295                 unlink "${General::swroot}/guardian/enable";
 296         }
 297
 298                 system('/usr/local/bin/snortctrl restart >/dev/null');
 299
 300 } elsif ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "guardian" ){
 301                         open(IGNOREFILE, ">$snortsettings{'GUARDIAN_IGNOREFILE'}") or die "Unable to write guardian ignore file $snortsettings{'GUARDIAN_IGNOREFILE'}";
 302                                 print IGNOREFILE $snortsettings{'GUARDIAN_IGNOREFILE_CONTENT'};
 303                         close(IGNOREFILE);
 304                         open(GUARDIAN, ">/var/ipfire/guardian/guardian.conf") or die "Unable to write guardian conf /var/ipfire/guardian/guardian.conf";
 305                                 print GUARDIAN <<END
 306 Interface   $snortsettings{'GUARDIAN_INTERFACE'}
 307 HostGatewayByte   $snortsettings{'GUARDIAN_HOSTGATEWAYBYTE'}
 308 LogFile   $snortsettings{'GUARDIAN_LOGFILE'}
 309 AlertFile   $snortsettings{'GUARDIAN_ALERTFILE'}
 310 IgnoreFile   $snortsettings{'GUARDIAN_IGNOREFILE'}
 311 TargetFile   $snortsettings{'GUARDIAN_TARGETFILE'}
 312 TimeLimit   $snortsettings{'GUARDIAN_TIMELIMIT'}
 313 END
 314 ;
 315                         close(GUARDIAN);
 316                 system('/usr/local/bin/snortctrl restart >/dev/null');
 317 } else {
 318          # INSTALLMD5 is not in the form, so not retrieved by getcgihash
 319         &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 320 }
 321
 322 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
 323         $md5 = &getmd5;
 324         if (($snortsettings{'INSTALLMD5'} ne $md5) && defined $md5 ) {
 325                 chomp($md5);
 326                 my $filename = &downloadrulesfile();
 327                 if (defined $filename) {
 328                         # Check MD5sum
 329                         $realmd5 = `/usr/bin/md5sum $filename`;
 330                         chomp ($realmd5);
 331                         $realmd5 =~ s/^(\w+)\s.*$/$1/;
 332                         if ($md5 ne $realmd5) {
 333                                 $errormessage = "$Lang::tr{'invalid md5sum'}";
 334                         } else {
 335                                 $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
 336                                 $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules 2>&1`;
 337                                 $results .= "</pre>";
 338                         }
 339                         unlink ($filename);
 340                 }
 341         }
 342 }
 343
 344 $checked{'ENABLE_SNORT'}{'off'} = '';
 345 $checked{'ENABLE_SNORT'}{'on'} = '';
 346 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 347 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 348 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 349 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 350 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 351 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 352 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 353 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 354 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 355 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 356 $checked{'ENABLE_GUARDIAN'}{'off'} = '';
 357 $checked{'ENABLE_GUARDIAN'}{'on'} = '';
 358 $checked{'ENABLE_GUARDIAN'}{$snortsettings{'ENABLE_GUARDIAN'}} = "checked='checked'";
 359 $selected{'RULES'}{'nothing'} = '';
 360 $selected{'RULES'}{'community'} = '';
 361 $selected{'RULES'}{'registered'} = '';
 362 $selected{'RULES'}{'subscripted'} = '';
 363 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 364
 365 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 366
 367 ####################### Added for snort rules control #################################
 368 print "<SCRIPT LANGUAGE='JavaScript' SRC='/include/snortupdateutility.js'></SCRIPT>";
 369 print <<END
 370 <STYLE TYPE="text/css">
 371 <!--
 372 .section {
 373         border: groove;
 374 }
 375 .row1color {
 376         border: ridge;
 377         background-color: $color{'color22'};
 378 }
 379 .row2color {
 380         border: ridge;
 381         background-color: $color{'color20'};
 382 }
 383 .rowselected {
 384         border: double #FF0000;
 385         background-color: #DCDCDC;
 386 }
 387 -->
 388 </STYLE>
 389 END
 390 ;
 391 #######################  End added for snort rules control  #################################
 392
 393 &Header::openbigbox('100%', 'left', '', $errormessage);
 394
 395 if ($errormessage) {
 396         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 397         print "<class name='base'>$errormessage\n";
 398         print "&nbsp;</class>\n";
 399         &Header::closebox();
 400 }
 401
 402 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system2'});
 403 print <<END
 404 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 405 <tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
 406 END
 407 ;
 408 if ($netsettings{'BLUE_DEV'} ne '') {
 409   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />   BLUE Snort";
 410 }
 411 if ($netsettings{'ORANGE_DEV'} ne '') {
 412   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />   ORANGE Snort";
 413 }
 414   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />   RED Snort";
 415 if ( -e "/var/ipfire/guardian/guardian.conf" ) {
 416   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_GUARDIAN' $checked{'ENABLE_GUARDIAN'}{'on'} />  Guardian";
 417 }
 418
 419 print <<END
 420 </td></tr>
 421 <tr>
 422         <td><hr /></td>
 423 </tr>
 424 <tr>
 425         <td><b>$Lang::tr{'ids rules update'}</b></td>
 426 </tr>
 427 <tr>
 428         <td><select name='RULES'>
 429                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 430                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 431                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 432                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 433                         </select>
 434         </td>
 435 </tr>
 436 <tr>
 437         <td><br />
 438                 $Lang::tr{'ids rules license'} <a href='http://www.snort.org/' target='_blank'>http://www.snort.org</a>.<br />
 439                 <br />
 440                 $Lang::tr{'ids rules license2'} <a href='http://www.snort.org/reg-bin/userprefs.cgi' target='_blank'>USER PREFERENCES</a>, $Lang::tr{'ids rules license3'}<br />
 441         </td>
 442 </tr>
 443 <tr>
 444         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 445 </tr>
 446 <tr>
 447         <td width='30%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 448 END
 449 ;
 450
 451 if ($snortsettings{'INSTALLMD5'} eq $md5) {
 452         print "&nbsp;$Lang::tr{'rules already up to date'}</td>";
 453 } else {
 454         if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} && $md5 eq $realmd5 ) {
 455                 $snortsettings{'INSTALLMD5'} = $realmd5;
 456                 $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
 457                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 458         }
 459         print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 460 }
 461 print <<END
 462 </tr>
 463 </table>
 464 <hr />
 465 <table width='100%'>
 466 <tr>
 467         <td align='center'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 468 </tr>
 469 </table>
 470 </form>
 471 END
 472 ;
 473
 474 if ($results ne '') {
 475         print "$results";
 476 }
 477
 478 &Header::closebox();
 479
 480 ####################### Added for guardian control ####################################
 481 if ( -e "/var/ipfire/guardian/guardian.conf" ) {
 482         &Header::openbox('100%', 'LEFT', $Lang::tr{'guardian configuration'});
 483 print <<END
 484 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 485 <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>
 486 <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>
 487 <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>
 488 <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>
 489 <tr><td align='left' width='40%'>$Lang::tr{'guardian ignorefile'}</td><td align='left'><textarea name='IGNOREFILE_CONTENT' cols='32' rows='6' wrap='off'></textarea></td></tr>
 490 <tr><td align='center' colspan='2'><input type='hidden' name='ACTION2' value='guardian' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td></tr>
 491 </table>
 492 </form>
 493 END
 494 ;
 495         &Header::closebox();
 496 }
 497
 498
 499
 500
 501 ####################### Added for snort rules control #################################
 502 if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable_green" || -e "${General::swroot}/snort/enable_blue" || -e "${General::swroot}/snort/enable_orange" ) {
 503         &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 504                 # Output display table for rule files
 505                 print "<TABLE width='100%'><TR><TD VALIGN='TOP'><TABLE>";
 506
 507                 print "<form method='post'>";
 508
 509                 # Local vars
 510                 my $ruledisplaycnt = 1;
 511                 my $rulecnt = keys %snortrules;
 512                 $rulecnt++;
 513                 $rulecnt = $rulecnt / 2;
 514
 515                 # Loop over each rule file
 516                 foreach my $rulefile (sort keys(%snortrules)) {
 517                         my $rulechecked = '';
 518
 519                         # Check if reached half-way through rule file rules to start new column
 520                 if ($ruledisplaycnt > $rulecnt) {
 521                                 print "</TABLE></TD><TD VALIGN='TOP'><TABLE>";
 522                                 $ruledisplaycnt = 0;
 523                         }
 524
 525                         # Check if rule file is enabled
 526                         if ($snortrules{$rulefile}{"State"} eq 'Enabled') {
 527                                 $rulechecked = 'CHECKED';
 528                         }
 529
 530                         # Create rule file link, vars array, and display flag
 531                         my $rulefilelink = "?RULEFILE=$rulefile";
 532                         my $rulefiletoclose = '';
 533                         my @queryvars = ();
 534                         my $displayrulefilerules = 0;
 535
 536                         # Check for passed in query string
 537                         if ($ENV{'QUERY_STRING'}) {
 538                                 # Split out vars
 539                                 @queryvars = split(/\&/, $ENV{'QUERY_STRING'});
 540
 541                                 # Loop over values
 542                                 foreach $value (@queryvars) {
 543                                         # Split out var pairs
 544                                         ($var, $linkedrulefile) = split(/=/, $value);
 545
 546                                         # Check if var is 'RULEFILE'
 547                                         if ($var eq 'RULEFILE') {
 548                                                 # Check if rulefile equals linkedrulefile
 549                                                 if ($rulefile eq $linkedrulefile) {
 550                                                         # Set display flag
 551                                                         $displayrulefilerules = 1;
 552
 553                                                         # Strip out rulefile from rulefilelink
 554                                                         $rulefilelink =~ s/RULEFILE=$linkedrulefile//g;
 555                                                 } else {
 556                                                         # Add linked rule file to rulefilelink
 557                                                         $rulefilelink .= "&RULEFILE=$linkedrulefile";
 558                                                 }
 559                                         }
 560                                 }
 561                         }
 562
 563                         # Strip out extra & & ? from rulefilelink
 564                         $rulefilelink =~ s/^\?\&/\?/i;
 565
 566                         # Check for a single '?' and replace with page for proper link display
 567                         if ($rulefilelink eq '?') {
 568                                 $rulefilelink = "ids.cgi";
 569                         }
 570
 571                         # Output rule file name and checkbox
 572                         print "<TR><TD CLASS='base' VALIGN='TOP'><INPUT TYPE='checkbox' NAME='SNORT_RULE_$rulefile' $rulechecked> <A HREF='$rulefilelink'>$rulefile</A></TD></TR>";
 573                         print "<TR><TD CLASS='base' VALIGN='TOP'>";
 574
 575                         # Check for empty 'Description'
 576                         if ($snortrules{$rulefile}{'Description'} eq '') {
 577                                 print "<TABLE WIDTH='100%'><TR><TD CLASS='base'>No description available</TD></TR>";
 578                         } else {
 579                                 # Output rule file 'Description'
 580                                 print "<TABLE WIDTH='100%'><TR><TD CLASS='base'>$snortrules{$rulefile}{'Description'}</TD></TR>";
 581                         }
 582
 583                         # Check for display flag
 584                         if ($displayrulefilerules) {
 585                                 # Rule file definition rule display
 586                                 print "<TR><TD CLASS='base' VALIGN='TOP'><TABLE border=1><TR>";
 587
 588                                 # Local vars
 589                                 my $ruledefdisplaycnt = 0;
 590                                 my $ruledefcnt = keys %{$snortrules{$rulefile}{"Definition"}};
 591                                 $ruledefcnt++;
 592                                 $ruledefcnt = $ruledefcnt / 2;
 593
 594                                 # Loop over rule file rules
 595                                 foreach my $ruledef (sort {$a <=> $b} keys(%{$snortrules{$rulefile}{"Definition"}})) {
 596                                         # Local vars
 597                                         my $ruledefchecked = '';
 598
 599                                         # If have display 2 rules, start new row
 600                                         if (($ruledefdisplaycnt % 2) == 0) {
 601                                                 print "</TR><TR>";
 602                                                 $ruledefdisplaycnt = 0;
 603                                         }
 604
 605                                         # Check for rules state
 606                                         if ($snortrules{$rulefile}{'Definition'}{$ruledef}{'State'} eq 'Enabled') {
 607                                                 $ruledefchecked = 'CHECKED';
 608                                         }
 609
 610                                         # Create rule file rule's checkbox
 611                                         $checkboxname = "SNORT_RULE_$rulefile";
 612                                         $checkboxname .= "_$ruledef";
 613                                         print "<TD CLASS='base'><INPUT TYPE='checkbox' NAME='$checkboxname' $ruledefchecked> $snortrules{$rulefile}{'Definition'}{$ruledef}{'Description'}</TD>";
 614
 615                                         # Increment count
 616                                         $ruledefdisplaycnt++;
 617                                 }
 618
 619                                 # If do not have second rule for row, create empty cell
 620                                 if (($ruledefdisplaycnt % 2) != 0) {
 621                                         print "<TD CLASS='base'></TD>";
 622                                 }
 623
 624                                 # Close display table
 625                                 print "</TR></TABLE></TD></TR>";
 626                 }
 627
 628                         # Close display table
 629                         print "</TABLE>";
 630
 631                         # Increment ruledisplaycnt
 632                 $ruledisplaycnt++;
 633                 }
 634         print "</TD></TR></TABLE></TD></TR></TABLE>";
 635         print <<END
 636 <table width='100%'>
 637 <tr>
 638         <td width='33%'>&nbsp;</td>
 639         <td width='33%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
 640         <td width='33%'>
 641                 &nbsp; <!-- space for future online help link -->
 642         </td>
 643 </tr>
 644 </table>
 645 </form>
 646 END
 647 ;
 648         &Header::closebox();
 649 }
 650
 651 #######################  End added for snort rules control  #################################
 652 &Header::closebigbox();
 653 &Header::closepage();
 654
 655 sub getmd5 {
 656         # Retrieve MD5 sum from $url.md5 file
 657         #
 658         my $md5buf = &geturl("$url.md5");
 659         return undef unless $md5buf;
 660
 661         if (0) { # 1 to debug
 662                 my $filename='';
 663                 my $fh='';
 664                 ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.md5' );
 665                 binmode ($fh);
 666                 syswrite ($fh, $md5buf->content);
 667                 close($fh);
 668         }
 669         return $md5buf->content;
 670 }
 671 sub downloadrulesfile {
 672         my $return = &geturl($url);
 673         return undef unless $return;
 674
 675         if (index($return->content, "\037\213") == -1 ) { # \037\213 is .gz beginning
 676                 $errormessage = $Lang::tr{'invalid loaded file'};
 677                 return undef;
 678         }
 679
 680         my $filename='';
 681         my $fh='';
 682         ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
 683         binmode ($fh);
 684         syswrite ($fh, $return->content);
 685         close($fh);
 686         return $filename;
 687 }
 688
 689 sub geturl ($) {
 690         my $url=$_[0];
 691
 692         unless (-e "${General::swroot}/red/active") {
 693                 $errormessage = $Lang::tr{'could not download latest updates'};
 694                 return undef;
 695         }
 696
 697         my $downloader = LWP::UserAgent->new;
 698         $downloader->timeout(5);
 699
 700         my %proxysettings=();
 701         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 702
 703         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 704                 my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 705                 if ($proxysettings{'UPSTREAM_USER'}) {
 706                         $downloader->proxy("http","http://$proxysettings{'UPSTREAM_USER'}:$proxysettings{'UPSTREAM_PASSWORD'}@"."$peer:$peerport/");
 707                 } else {
 708                         $downloader->proxy("http","http://$peer:$peerport/");
 709                 }
 710         }
 711
 712         my $return = $downloader->get($url,'Cache-Control','no-cache');
 713
 714         if ($return->code == 403) {
 715                 $errormessage = $Lang::tr{'access refused with this oinkcode'};
 716                 return undef;
 717         } elsif (!$return->is_success()) {
 718                 $errormessage = $Lang::tr{'could not download latest updates'};
 719                 return undef;
 720         }
 721
 722         return $return;
 723
 724 }