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_GUARDIAN'} = 'off';
  60 $snortsettings{'GUARDIAN_INTERFACE'} = `cat /var/ipfire/red/iface`;
  61 $snortsettings{'GUARDIAN_HOSTGATEWAYBYTE'} = '1';
  62 $snortsettings{'GUARDIAN_LOGFILE'} = '/var/log/guardian/guardian.log';
  63 $snortsettings{'GUARDIAN_ALERTFILE'} = '/var/log/snort/alert';
  64 $snortsettings{'GUARDIAN_IGNOREFILE'} = '/var/ipfire/guardian/guardian.ignore';
  65 $snortsettings{'GUARDIAN_TARGETFILE'} = '/var/ipfire/guardian/guardian.target';
  66 $snortsettings{'GUARDIAN_TIMELIMIT'} = '86400';
  67 $snortsettings{'GUARDIAN_IGNOREFILE_CONTENT'} = `cat $snortsettings{'GUARDIAN_IGNOREFILE'}`;
  68 $snortsettings{'ACTION'} = '';
  69 $snortsettings{'ACTION2'} = '';
  70 $snortsettings{'RULES'} = '';
  71 $snortsettings{'OINKCODE'} = '';
  72 $snortsettings{'INSTALLDATE'} = '';
  73 $snortsettings{'INSTALLMD5'} = '';
  74
  75 &Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
  76
  77 ####################### Added for snort rules control #################################
  78 my $snortrulepath; # change to "/etc/snort/rules" - maniac
  79 my @snortconfig;
  80 my $restartsnortrequired = 0;
  81 my %snortrules;
  82 my $rule = '';
  83 my $table1colour = '';
  84 my $table2colour = '';
  85 my $var = '';
  86 my $value = '';
  87 my $tmp = '';
  88 my $linkedrulefile = '';
  89 my $border = '';
  90 my $checkboxname = '';
  91
  92 if (-e "/etc/snort/snort.conf") {
  93
  94
  95         # Open snort.conf file, read it in, close it, and re-open for writing
  96         open(FILE, "/etc/snort/snort.conf") or die 'Unable to read snort config file.';
  97         @snortconfig = <FILE>;
  98         close(FILE);
  99         open(FILE, ">/etc/snort/snort.conf") or die 'Unable to write snort config file.';
 100
 101     my @rules = `cd /etc/snort/rules/ && ls *.rules`;    # With this loop the rule might be display with correct rulepath set
 102         foreach (@rules) {
 103         chomp $_;
 104         my $temp = join(";",@snortconfig);
 105     if ( $temp =~ /$_/ ){next;}
 106     else { push(@snortconfig,"#include \$RULE_PATH/".$_);}
 107         }
 108
 109         # Loop over each line
 110         foreach my $line (@snortconfig) {
 111                 # Trim the line
 112                 chomp $line;
 113
 114                 # Check for a line with .rules
 115                 if ($line =~ /\.rules$/) {
 116                         # Parse out rule file name
 117                         $rule = $line;
 118                         $rule =~ s/\$RULE_PATH\///i;
 119                         $rule =~ s/ ?include ?//i;
 120                         $rule =~ s/\#//i;
 121                         my $snortrulepathrule = "$snortrulepath/$rule";
 122
 123                         # Open rule file and read in contents
 124                         open(RULEFILE, "$snortrulepath/$rule") or die "Unable to read snort rule file for reading => $snortrulepath/$rule.";
 125                         my @snortrulefile = <RULEFILE>;
 126                         close(RULEFILE);
 127                         open(RULEFILE, ">$snortrulepath/$rule") or die "Unable to write snort rule file for writing $snortrulepath/$rule";
 128
 129                         # Local vars
 130                         my $dashlinecnt = 0;
 131                         my $desclook = 1;
 132                         my $snortruledesc = '';
 133                         my %snortruledef = ();
 134                         my $rulecnt = 1;
 135
 136                         # Loop over rule file contents
 137                         foreach my $ruleline (@snortrulefile) {
 138                                 chomp $ruleline;
 139
 140                                 # If still looking for a description
 141                                 if ($desclook) {
 142                                         # If line does not start with a # anymore, then done looking for a description
 143                                         if ($ruleline !~ /^\#/) {
 144                                                 $desclook = 0;
 145                                         }
 146
 147                                         # If see more than one dashed line, (start to) create rule file description
 148                                         if ($dashlinecnt > 1) {
 149                                                 # Check for a line starting with a #
 150                                                 if ($ruleline =~ /^\#/) {
 151                                                         # Create tempruleline
 152                                                         my $tempruleline = $ruleline;
 153
 154                                                         # Strip off # and clean up line
 155                                                         $tempruleline =~ s/\# ?//i;
 156
 157                                                         # Check for part of a description
 158                                                         if ($snortruledesc eq '') {
 159                                                                 $snortruledesc = $tempruleline;
 160                                                         } else {
 161                                                                 $snortruledesc .= " $tempruleline";
 162                                                         }
 163                                                 } else {
 164                                                         # Must be done
 165                                                         $desclook = 0;
 166                                                 }
 167                                         }
 168
 169                                         # If have a dashed line, increment count
 170                                         if ($ruleline =~ /\# ?\-+/) {
 171                                                 $dashlinecnt++;
 172                                         }
 173                                 } else {
 174                                         # Parse out rule file rule's message for display
 175                                         if ($ruleline =~ /(msg\:\"[^\"]+\";)/) {
 176                                                 my $msg = '';
 177                                                 $msg = $1;
 178                                                 $msg =~ s/msg\:\"//i;
 179                                                 $msg =~ s/\";//i;
 180                                                 $snortruledef{$rulecnt}{'Description'} = $msg;
 181
 182                                                 # Check for 'Save' and rule file displayed in query string
 183                                                 if (($snortsettings{'ACTION'} eq $Lang::tr{'update'}) && ($ENV{'QUERY_STRING'} =~ /$rule/i)) {
 184                                                         # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 185                                                         if ((($ruleline =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"})) || (($ruleline !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}))) {
 186                                                                 $restartsnortrequired = 1;
 187                                                         }
 188
 189                                                         # Strip out leading # from rule line
 190                                                         $ruleline =~ s/\# ?//i;
 191
 192                                                         # Check if it does not exists (which means it is disabled), append a #
 193                                                         if (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}) {
 194                                                                 $ruleline = "#"." $ruleline";
 195                                                         }
 196                                                 }
 197
 198                                                 # Check if ruleline does not begin with a #, so it is enabled
 199                                                 if ($ruleline !~ /^\#/) {
 200                                                         $snortruledef{$rulecnt++}{'State'} = 'Enabled';
 201                                                 } else {
 202                                                         # Otherwise it is disabled
 203                                                         $snortruledef{$rulecnt++}{'State'} = 'Disabled';
 204                                                 }
 205                                         }
 206                                 }
 207
 208                                 # Print ruleline to RULEFILE
 209                                 print RULEFILE "$ruleline\n";
 210                         }
 211
 212                         # Close RULEFILE
 213                         close(RULEFILE);
 214
 215                         # Check for 'Save'
 216                         if ($snortsettings{'ACTION'} eq $Lang::tr{'update'}) {
 217                                 # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 218                                 if ((($line =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule"})) || (($line !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule"}))) {
 219                                         $restartsnortrequired = 1;
 220                                 }
 221
 222                                 # Strip out leading # from rule line
 223                                 $line =~ s/\# ?//i;
 224
 225                                 # Check if it does not exists (which means it is disabled), append a #
 226                                 if (!exists $snortsettings{"SNORT_RULE_$rule"}) {
 227                                         $line = "# $line";
 228                                 }
 229
 230                         }
 231
 232                         # Check for rule state
 233                         if ($line =~ /^\#/) {
 234                                 $snortrules{$rule}{"State"} = "Disabled";
 235                         } else {
 236                                 $snortrules{$rule}{"State"} = "Enabled";
 237                         }
 238
 239                         # Set rule description
 240                         $snortrules{$rule}{"Description"} = $snortruledesc;
 241
 242                         # Loop over sorted rules
 243                         foreach my $ruledef (sort {$a <=> $b} keys(%snortruledef)) {
 244                                 $snortrules{$rule}{"Definition"}{$ruledef}{'Description'} = $snortruledef{$ruledef}{'Description'};
 245                                 $snortrules{$rule}{"Definition"}{$ruledef}{'State'} = $snortruledef{$ruledef}{'State'};
 246                         }
 247
 248                         $snortruledesc = '';
 249                         print FILE "$line\n";
 250                 } elsif ($line =~ /var RULE_PATH/) {
 251                         ($tmp, $tmp, $snortrulepath) = split(' ', $line);
 252                         print FILE "$line\n";
 253                 } else {
 254                         print FILE "$line\n";
 255                 }
 256         }
 257         close(FILE);
 258
 259         if ($restartsnortrequired) {
 260                 system('/usr/local/bin/snortctrl restart >/dev/null');
 261         }
 262 }
 263
 264 #######################  End added for snort rules control  #################################
 265
 266 if ($snortsettings{'RULES'} eq 'subscripted') {
 267         $url="http://dl.snort.org/reg-rules/snortrules-snapshot-2.8_s.tar.gz?oink_code=$snortsettings{'OINKCODE'}";
 268         #$url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.8_s.tar.gz";
 269 } elsif ($snortsettings{'RULES'} eq 'registered') {
 270         $url="http://dl.snort.org/reg-rules/snortrules-snapshot-2.8.tar.gz?oink_code=$snortsettings{'OINKCODE'}";
 271         #$url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.8.tar.gz";
 272 } else {
 273         $url="http://www.snort.org/pub-bin/downloads.cgi/Download/comm_rules/Community-Rules-CURRENT.tar.gz";
 274 }
 275
 276 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" )
 277 {
 278         $errormessage = $Lang::tr{'invalid input for oink code'} unless (
 279             ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/)  ||
 280             ($snortsettings{'RULESTYPE'} eq 'nothing' )       );
 281
 282         &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 283         if ($snortsettings{'ENABLE_SNORT'} eq 'on')
 284         {
 285                 system ('/usr/bin/touch', "${General::swroot}/snort/enable");
 286         } else {
 287                 unlink "${General::swroot}/snort/enable";
 288         }
 289         if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
 290         {
 291                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
 292         } else {
 293                 unlink "${General::swroot}/snort/enable_green";
 294         }
 295         if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
 296         {
 297                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
 298         } else {
 299                 unlink "${General::swroot}/snort/enable_blue";
 300         }
 301         if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
 302         {
 303                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
 304         } else {
 305                 unlink "${General::swroot}/snort/enable_orange";
 306         }
 307         if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
 308         {
 309                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
 310         } else {
 311                 unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
 312         }
 313         if ($snortsettings{'ENABLE_GUARDIAN'} eq 'on')
 314         {
 315                 system ('/usr/bin/touch', "${General::swroot}/guardian/enable");
 316         } else {
 317                 unlink "${General::swroot}/guardian/enable";
 318         }
 319
 320         system('/usr/local/bin/snortctrl restart >/dev/null');
 321
 322 } elsif ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "guardian" ){
 323                         open(IGNOREFILE, ">$snortsettings{'GUARDIAN_IGNOREFILE'}") or die "Unable to write guardian ignore file $snortsettings{'GUARDIAN_IGNOREFILE'}";
 324                                 print IGNOREFILE $snortsettings{'GUARDIAN_IGNOREFILE_CONTENT'};
 325                         close(IGNOREFILE);
 326                         open(GUARDIAN, ">/var/ipfire/guardian/guardian.conf") or die "Unable to write guardian conf /var/ipfire/guardian/guardian.conf";
 327                                 print GUARDIAN <<END
 328 Interface   $snortsettings{'GUARDIAN_INTERFACE'}
 329 HostGatewayByte   $snortsettings{'GUARDIAN_HOSTGATEWAYBYTE'}
 330 LogFile   $snortsettings{'GUARDIAN_LOGFILE'}
 331 AlertFile   $snortsettings{'GUARDIAN_ALERTFILE'}
 332 IgnoreFile   $snortsettings{'GUARDIAN_IGNOREFILE'}
 333 TargetFile   $snortsettings{'GUARDIAN_TARGETFILE'}
 334 TimeLimit   $snortsettings{'GUARDIAN_TIMELIMIT'}
 335 END
 336 ;
 337                         close(GUARDIAN);
 338                 system('/usr/local/bin/snortctrl restart >/dev/null');
 339 }
 340          # INSTALLMD5 is not in the form, so not retrieved by getcgihash
 341         &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 342
 343 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
 344         $md5 = &getmd5;
 345         if (($snortsettings{'INSTALLMD5'} ne $md5) && defined $md5 ) {
 346                 chomp($md5);
 347                 my $filename = &downloadrulesfile();
 348                 if (defined $filename) {
 349                         # Check MD5sum
 350                         $realmd5 = `/usr/bin/md5sum $filename`;
 351                         chomp ($realmd5);
 352                         $realmd5 =~ s/^(\w+)\s.*$/$1/;
 353                         if ( $md5 ne $realmd5 ) {
 354                                 $errormessage = "$Lang::tr{'invalid md5sum'} - $md5 - $realmd5";
 355                         } else {
 356                                 $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
 357                                 $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules 2>&1`;
 358                                 $results .= "</pre>";
 359                         }
 360                         unlink ($filename);
 361                 }
 362         }
 363 }
 364
 365 $checked{'ENABLE_SNORT'}{'off'} = '';
 366 $checked{'ENABLE_SNORT'}{'on'} = '';
 367 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 368 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 369 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 370 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 371 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 372 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 373 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 374 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 375 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 376 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 377 $checked{'ENABLE_GUARDIAN'}{'off'} = '';
 378 $checked{'ENABLE_GUARDIAN'}{'on'} = '';
 379 $checked{'ENABLE_GUARDIAN'}{$snortsettings{'ENABLE_GUARDIAN'}} = "checked='checked'";
 380 $selected{'RULES'}{'nothing'} = '';
 381 $selected{'RULES'}{'community'} = '';
 382 $selected{'RULES'}{'registered'} = '';
 383 $selected{'RULES'}{'subscripted'} = '';
 384 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 385
 386 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 387
 388 ####################### Added for snort rules control #################################
 389 print "<SCRIPT LANGUAGE='JavaScript' SRC='/include/snortupdateutility.js'></SCRIPT>";
 390 print <<END
 391 <STYLE TYPE="text/css">
 392 <!--
 393 .section {
 394         border: groove;
 395 }
 396 .row1color {
 397         border: ridge;
 398         background-color: $color{'color22'};
 399 }
 400 .row2color {
 401         border: ridge;
 402         background-color: $color{'color20'};
 403 }
 404 .rowselected {
 405         border: double #FF0000;
 406         background-color: #DCDCDC;
 407 }
 408 -->
 409 </STYLE>
 410 END
 411 ;
 412 #######################  End added for snort rules control  #################################
 413
 414 &Header::openbigbox('100%', 'left', '', $errormessage);
 415
 416 if ($errormessage) {
 417         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 418         print "<class name='base'>$errormessage\n";
 419         print "&nbsp;</class>\n";
 420         &Header::closebox();
 421 }
 422
 423 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system2'});
 424 print <<END
 425 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 426 <tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
 427 END
 428 ;
 429 if ($netsettings{'BLUE_DEV'} ne '') {
 430   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />   BLUE Snort";
 431 }
 432 if ($netsettings{'ORANGE_DEV'} ne '') {
 433   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />   ORANGE Snort";
 434 }
 435   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />   RED Snort";
 436 if ( -e "/var/ipfire/guardian/guardian.conf" ) {
 437   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_GUARDIAN' $checked{'ENABLE_GUARDIAN'}{'on'} />  Guardian";
 438 }
 439
 440 print <<END
 441 </td></tr>
 442 <tr>
 443         <td><hr /></td>
 444 </tr>
 445 <tr>
 446         <td><b>$Lang::tr{'ids rules update'}</b></td>
 447 </tr>
 448 <tr>
 449         <td><select name='RULES'>
 450                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 451                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 452                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 453                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 454                         </select>
 455         </td>
 456 </tr>
 457 <tr>
 458         <td><br />
 459                 $Lang::tr{'ids rules license'} <a href='http://www.snort.org/' target='_blank'>http://www.snort.org</a>.<br />
 460                 <br />
 461                 $Lang::tr{'ids rules license2'} <a href='http://www.snort.org/reg-bin/userprefs.cgi' target='_blank'>USER PREFERENCES</a>, $Lang::tr{'ids rules license3'}<br />
 462         </td>
 463 </tr>
 464 <tr>
 465         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 466 </tr>
 467 <tr>
 468         <td width='30%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 469 END
 470 ;
 471
 472 if ($snortsettings{'INSTALLMD5'} eq $md5) {
 473         print "&nbsp;$Lang::tr{'rules already up to date'}</td>";
 474 } else {
 475         if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} && $md5 eq $realmd5 ) {
 476                 $snortsettings{'INSTALLMD5'} = $realmd5;
 477                 $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
 478                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 479         }
 480         print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 481 }
 482 print <<END
 483 </tr>
 484 </table>
 485 <hr />
 486 <table width='100%'>
 487 <tr>
 488         <td align='center'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 489 </tr>
 490 </table>
 491 </form>
 492 END
 493 ;
 494
 495 if ($results ne '') {
 496         print "$results";
 497 }
 498
 499 &Header::closebox();
 500
 501 ####################### Added for guardian control ####################################
 502 if ( -e "/var/ipfire/guardian/guardian.conf" ) {
 503         &Header::openbox('100%', 'LEFT', $Lang::tr{'guardian configuration'});
 504 print <<END
 505 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 506 <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>
 507 <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>
 508 <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>
 509 <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>
 510 <tr><td align='left' width='40%'>$Lang::tr{'guardian ignorefile'}</td><td align='left'><textarea name='IGNOREFILE_CONTENT' cols='32' rows='6' wrap='off'>
 511 END
 512 ;
 513         print `cat /var/ipfire/guardian/guardian.ignore`;
 514 print <<END
 515 </textarea></td></tr>
 516 <tr><td align='center' colspan='2'><input type='hidden' name='ACTION2' value='guardian' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td></tr>
 517 </table>
 518 </form>
 519 END
 520 ;
 521         &Header::closebox();
 522 }
 523
 524
 525
 526
 527 ####################### Added for snort rules control #################################
 528 if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable_green" || -e "${General::swroot}/snort/enable_blue" || -e "${General::swroot}/snort/enable_orange" ) {
 529         &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 530                 # Output display table for rule files
 531                 print "<TABLE width='100%'><TR><TD VALIGN='TOP'><TABLE>";
 532
 533                 print "<form method='post'>";
 534
 535                 # Local vars
 536                 my $ruledisplaycnt = 1;
 537                 my $rulecnt = keys %snortrules;
 538                 $rulecnt++;
 539                 $rulecnt = $rulecnt / 2;
 540
 541                 # Loop over each rule file
 542                 foreach my $rulefile (sort keys(%snortrules)) {
 543                         my $rulechecked = '';
 544
 545                         # Check if reached half-way through rule file rules to start new column
 546                 if ($ruledisplaycnt > $rulecnt) {
 547                                 print "</TABLE></TD><TD VALIGN='TOP'><TABLE>";
 548                                 $ruledisplaycnt = 0;
 549                         }
 550
 551                         # Check if rule file is enabled
 552                         if ($snortrules{$rulefile}{"State"} eq 'Enabled') {
 553                                 $rulechecked = 'CHECKED';
 554                         }
 555
 556                         # Create rule file link, vars array, and display flag
 557                         my $rulefilelink = "?RULEFILE=$rulefile";
 558                         my $rulefiletoclose = '';
 559                         my @queryvars = ();
 560                         my $displayrulefilerules = 0;
 561
 562                         # Check for passed in query string
 563                         if ($ENV{'QUERY_STRING'}) {
 564                                 # Split out vars
 565                                 @queryvars = split(/\&/, $ENV{'QUERY_STRING'});
 566
 567                                 # Loop over values
 568                                 foreach $value (@queryvars) {
 569                                         # Split out var pairs
 570                                         ($var, $linkedrulefile) = split(/=/, $value);
 571
 572                                         # Check if var is 'RULEFILE'
 573                                         if ($var eq 'RULEFILE') {
 574                                                 # Check if rulefile equals linkedrulefile
 575                                                 if ($rulefile eq $linkedrulefile) {
 576                                                         # Set display flag
 577                                                         $displayrulefilerules = 1;
 578
 579                                                         # Strip out rulefile from rulefilelink
 580                                                         $rulefilelink =~ s/RULEFILE=$linkedrulefile//g;
 581                                                 } else {
 582                                                         # Add linked rule file to rulefilelink
 583                                                         $rulefilelink .= "&RULEFILE=$linkedrulefile";
 584                                                 }
 585                                         }
 586                                 }
 587                         }
 588
 589                         # Strip out extra & & ? from rulefilelink
 590                         $rulefilelink =~ s/^\?\&/\?/i;
 591
 592                         # Check for a single '?' and replace with page for proper link display
 593                         if ($rulefilelink eq '?') {
 594                                 $rulefilelink = "ids.cgi";
 595                         }
 596
 597                         # Output rule file name and checkbox
 598                         print "<TR><TD CLASS='base' VALIGN='TOP'><INPUT TYPE='checkbox' NAME='SNORT_RULE_$rulefile' $rulechecked> <A HREF='$rulefilelink'>$rulefile</A></TD></TR>";
 599                         print "<TR><TD CLASS='base' VALIGN='TOP'>";
 600
 601                         # Check for empty 'Description'
 602                         if ($snortrules{$rulefile}{'Description'} eq '') {
 603                                 print "<TABLE WIDTH='100%'><TR><TD CLASS='base'>No description available</TD></TR>";
 604                         } else {
 605                                 # Output rule file 'Description'
 606                                 print "<TABLE WIDTH='100%'><TR><TD CLASS='base'>$snortrules{$rulefile}{'Description'}</TD></TR>";
 607                         }
 608
 609                         # Check for display flag
 610                         if ($displayrulefilerules) {
 611                                 # Rule file definition rule display
 612                                 print "<TR><TD CLASS='base' VALIGN='TOP'><TABLE border=1><TR>";
 613
 614                                 # Local vars
 615                                 my $ruledefdisplaycnt = 0;
 616                                 my $ruledefcnt = keys %{$snortrules{$rulefile}{"Definition"}};
 617                                 $ruledefcnt++;
 618                                 $ruledefcnt = $ruledefcnt / 2;
 619
 620                                 # Loop over rule file rules
 621                                 foreach my $ruledef (sort {$a <=> $b} keys(%{$snortrules{$rulefile}{"Definition"}})) {
 622                                         # Local vars
 623                                         my $ruledefchecked = '';
 624
 625                                         # If have display 2 rules, start new row
 626                                         if (($ruledefdisplaycnt % 2) == 0) {
 627                                                 print "</TR><TR>";
 628                                                 $ruledefdisplaycnt = 0;
 629                                         }
 630
 631                                         # Check for rules state
 632                                         if ($snortrules{$rulefile}{'Definition'}{$ruledef}{'State'} eq 'Enabled') {
 633                                                 $ruledefchecked = 'CHECKED';
 634                                         }
 635
 636                                         # Create rule file rule's checkbox
 637                                         $checkboxname = "SNORT_RULE_$rulefile";
 638                                         $checkboxname .= "_$ruledef";
 639                                         print "<TD CLASS='base'><INPUT TYPE='checkbox' NAME='$checkboxname' $ruledefchecked> $snortrules{$rulefile}{'Definition'}{$ruledef}{'Description'}</TD>";
 640
 641                                         # Increment count
 642                                         $ruledefdisplaycnt++;
 643                                 }
 644
 645                                 # If do not have second rule for row, create empty cell
 646                                 if (($ruledefdisplaycnt % 2) != 0) {
 647                                         print "<TD CLASS='base'></TD>";
 648                                 }
 649
 650                                 # Close display table
 651                                 print "</TR></TABLE></TD></TR>";
 652                 }
 653
 654                         # Close display table
 655                         print "</TABLE>";
 656
 657                         # Increment ruledisplaycnt
 658                 $ruledisplaycnt++;
 659                 }
 660         print "</TD></TR></TABLE></TD></TR></TABLE>";
 661         print <<END
 662 <table width='100%'>
 663 <tr>
 664         <td width='33%'>&nbsp;</td>
 665         <td width='33%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
 666         <td width='33%'>
 667                 &nbsp; <!-- space for future online help link -->
 668         </td>
 669 </tr>
 670 </table>
 671 </form>
 672 END
 673 ;
 674         &Header::closebox();
 675 }
 676
 677 #######################  End added for snort rules control  #################################
 678 &Header::closebigbox();
 679 &Header::closepage();
 680
 681 sub getmd5 {
 682         # Retrieve MD5 sum from $url.md5 file
 683
 684         my $md5buf;
 685         if ($snortsettings{'RULES'} eq 'subscripted') {
 686                 $md5buf = &geturl("http://dl.snort.org/reg-rules/snortrules-snapshot-2.8_s.tar.gz.md5?oink_code=$snortsettings{'OINKCODE'}");
 687         } elsif ($snortsettings{'RULES'} eq 'registered') {
 688                 $md5buf = &geturl("http://dl.snort.org/reg-rules/snortrules-snapshot-2.8.tar.gz.md5?oink_code=$snortsettings{'OINKCODE'}");
 689         } else {
 690                 $md5buf = &geturl("http://www.snort.org/pub-bin/downloads.cgi/Download/comm_rules/Community-Rules-CURRENT.tar.gz.md5");
 691         }
 692
 693         return undef unless $md5buf;
 694
 695         if (0) { # 1 to debug
 696                 my $filename='';
 697                 my $fh='';
 698                 ($fh, $filename) = tempfile('/var/tmp/XXXXXXXX',SUFFIX => '.md5' );
 699                 binmode ($fh);
 700                 syswrite ($fh, $md5buf->content);
 701                 close($fh);
 702         }
 703
 704         return $md5buf->content;
 705 }
 706 sub downloadrulesfile {
 707         my $return = &geturl($url);
 708         return undef unless $return;
 709
 710         if (index($return->content, "\037\213") == -1 ) { # \037\213 is .gz beginning
 711                 $errormessage = $Lang::tr{'invalid loaded file'};
 712                 return undef;
 713         }
 714
 715         my $filename='';
 716         my $fh='';
 717         ($fh, $filename) = tempfile('/var/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
 718         binmode ($fh);
 719         syswrite ($fh, $return->content);
 720         close($fh);
 721         return $filename;
 722 }
 723
 724 sub geturl ($) {
 725         my $url=$_[0];
 726
 727         unless (-e "${General::swroot}/red/active") {
 728                 $errormessage = $Lang::tr{'could not download latest updates'};
 729                 return undef;
 730         }
 731
 732         my $downloader = LWP::UserAgent->new;
 733         $downloader->timeout(5);
 734
 735         my %proxysettings=();
 736         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 737
 738         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 739                 my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 740                 if ($proxysettings{'UPSTREAM_USER'}) {
 741                         $downloader->proxy("http","http://$proxysettings{'UPSTREAM_USER'}:$proxysettings{'UPSTREAM_PASSWORD'}@"."$peer:$peerport/");
 742                 } else {
 743                         $downloader->proxy("http","http://$peer:$peerport/");
 744                 }
 745         }
 746
 747         my $return = $downloader->get($url,'Cache-Control','no-cache');
 748
 749         if ($return->code == 403) {
 750                 $errormessage = $Lang::tr{'access refused with this oinkcode'};
 751                 return undef;
 752         } elsif (!$return->is_success()) {
 753                 $errormessage = $Lang::tr{'could not download latest updates'};
 754                 return undef;
 755         }
 756
 757         return $return;
 758
 759 }