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         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.8_s.tar.gz";
 268 } elsif ($snortsettings{'RULES'} eq 'registered') {
 269         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.8.tar.gz";
 270 } else {
 271         $url="http://www.snort.org/pub-bin/downloads.cgi/Download/comm_rules/Community-Rules-CURRENT.tar.gz";
 272 }
 273
 274 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "snort" )
 275 {
 276         $errormessage = $Lang::tr{'invalid input for oink code'} unless (
 277             ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/)  ||
 278             ($snortsettings{'RULESTYPE'} eq 'nothing' )       );
 279
 280         &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 281         if ($snortsettings{'ENABLE_SNORT'} eq 'on')
 282         {
 283                 system ('/usr/bin/touch', "${General::swroot}/snort/enable");
 284         } else {
 285                 unlink "${General::swroot}/snort/enable";
 286         }
 287         if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
 288         {
 289                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
 290         } else {
 291                 unlink "${General::swroot}/snort/enable_green";
 292         }
 293         if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
 294         {
 295                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
 296         } else {
 297                 unlink "${General::swroot}/snort/enable_blue";
 298         }
 299         if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
 300         {
 301                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
 302         } else {
 303                 unlink "${General::swroot}/snort/enable_orange";
 304         }
 305         if ($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'on')
 306         {
 307                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
 308         } else {
 309                 unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
 310         }
 311         if ($snortsettings{'ENABLE_GUARDIAN'} eq 'on')
 312         {
 313                 system ('/usr/bin/touch', "${General::swroot}/guardian/enable");
 314         } else {
 315                 unlink "${General::swroot}/guardian/enable";
 316         }
 317
 318         system('/usr/local/bin/snortctrl restart >/dev/null');
 319
 320 } elsif ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "guardian" ){
 321                         open(IGNOREFILE, ">$snortsettings{'GUARDIAN_IGNOREFILE'}") or die "Unable to write guardian ignore file $snortsettings{'GUARDIAN_IGNOREFILE'}";
 322                                 print IGNOREFILE $snortsettings{'GUARDIAN_IGNOREFILE_CONTENT'};
 323                         close(IGNOREFILE);
 324                         open(GUARDIAN, ">/var/ipfire/guardian/guardian.conf") or die "Unable to write guardian conf /var/ipfire/guardian/guardian.conf";
 325                                 print GUARDIAN <<END
 326 Interface   $snortsettings{'GUARDIAN_INTERFACE'}
 327 HostGatewayByte   $snortsettings{'GUARDIAN_HOSTGATEWAYBYTE'}
 328 LogFile   $snortsettings{'GUARDIAN_LOGFILE'}
 329 AlertFile   $snortsettings{'GUARDIAN_ALERTFILE'}
 330 IgnoreFile   $snortsettings{'GUARDIAN_IGNOREFILE'}
 331 TargetFile   $snortsettings{'GUARDIAN_TARGETFILE'}
 332 TimeLimit   $snortsettings{'GUARDIAN_TIMELIMIT'}
 333 END
 334 ;
 335                         close(GUARDIAN);
 336                 system('/usr/local/bin/snortctrl restart >/dev/null');
 337 }
 338          # INSTALLMD5 is not in the form, so not retrieved by getcgihash
 339         &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 340
 341 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
 342         $md5 = &getmd5;
 343         if (($snortsettings{'INSTALLMD5'} ne $md5) && defined $md5 ) {
 344                 chomp($md5);
 345                 my $filename = &downloadrulesfile();
 346                 if (defined $filename) {
 347                         # Check MD5sum
 348                         $realmd5 = `/usr/bin/md5sum $filename`;
 349                         chomp ($realmd5);
 350                         $realmd5 =~ s/^(\w+)\s.*$/$1/;
 351                         if ($md5 ne $realmd5) {
 352                                 $errormessage = "$Lang::tr{'invalid md5sum'}";
 353                         } else {
 354                                 $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
 355                                 $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules 2>&1`;
 356                                 $results .= "</pre>";
 357                         }
 358                         unlink ($filename);
 359                 }
 360         }
 361 }
 362
 363 $checked{'ENABLE_SNORT'}{'off'} = '';
 364 $checked{'ENABLE_SNORT'}{'on'} = '';
 365 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 366 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 367 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 368 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 369 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 370 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 371 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 372 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 373 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 374 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 375 $checked{'ENABLE_GUARDIAN'}{'off'} = '';
 376 $checked{'ENABLE_GUARDIAN'}{'on'} = '';
 377 $checked{'ENABLE_GUARDIAN'}{$snortsettings{'ENABLE_GUARDIAN'}} = "checked='checked'";
 378 $selected{'RULES'}{'nothing'} = '';
 379 $selected{'RULES'}{'community'} = '';
 380 $selected{'RULES'}{'registered'} = '';
 381 $selected{'RULES'}{'subscripted'} = '';
 382 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 383
 384 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 385
 386 ####################### Added for snort rules control #################################
 387 print "<SCRIPT LANGUAGE='JavaScript' SRC='/include/snortupdateutility.js'></SCRIPT>";
 388 print <<END
 389 <STYLE TYPE="text/css">
 390 <!--
 391 .section {
 392         border: groove;
 393 }
 394 .row1color {
 395         border: ridge;
 396         background-color: $color{'color22'};
 397 }
 398 .row2color {
 399         border: ridge;
 400         background-color: $color{'color20'};
 401 }
 402 .rowselected {
 403         border: double #FF0000;
 404         background-color: #DCDCDC;
 405 }
 406 -->
 407 </STYLE>
 408 END
 409 ;
 410 #######################  End added for snort rules control  #################################
 411
 412 &Header::openbigbox('100%', 'left', '', $errormessage);
 413
 414 if ($errormessage) {
 415         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 416         print "<class name='base'>$errormessage\n";
 417         print "&nbsp;</class>\n";
 418         &Header::closebox();
 419 }
 420
 421 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system2'});
 422 print <<END
 423 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 424 <tr><td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />GREEN Snort
 425 END
 426 ;
 427 if ($netsettings{'BLUE_DEV'} ne '') {
 428   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />   BLUE Snort";
 429 }
 430 if ($netsettings{'ORANGE_DEV'} ne '') {
 431   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />   ORANGE Snort";
 432 }
 433   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />   RED Snort";
 434 if ( -e "/var/ipfire/guardian/guardian.conf" ) {
 435   print "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type='checkbox' name='ENABLE_GUARDIAN' $checked{'ENABLE_GUARDIAN'}{'on'} />  Guardian";
 436 }
 437
 438 print <<END
 439 </td></tr>
 440 <tr>
 441         <td><hr /></td>
 442 </tr>
 443 <tr>
 444         <td><b>$Lang::tr{'ids rules update'}</b></td>
 445 </tr>
 446 <tr>
 447         <td><select name='RULES'>
 448                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 449                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 450                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 451                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 452                         </select>
 453         </td>
 454 </tr>
 455 <tr>
 456         <td><br />
 457                 $Lang::tr{'ids rules license'} <a href='http://www.snort.org/' target='_blank'>http://www.snort.org</a>.<br />
 458                 <br />
 459                 $Lang::tr{'ids rules license2'} <a href='http://www.snort.org/reg-bin/userprefs.cgi' target='_blank'>USER PREFERENCES</a>, $Lang::tr{'ids rules license3'}<br />
 460         </td>
 461 </tr>
 462 <tr>
 463         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 464 </tr>
 465 <tr>
 466         <td width='30%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 467 END
 468 ;
 469
 470 if ($snortsettings{'INSTALLMD5'} eq $md5) {
 471         print "&nbsp;$Lang::tr{'rules already up to date'}</td>";
 472 } else {
 473         if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} && $md5 eq $realmd5 ) {
 474                 $snortsettings{'INSTALLMD5'} = $realmd5;
 475                 $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
 476                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 477         }
 478         print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 479 }
 480 print <<END
 481 </tr>
 482 </table>
 483 <hr />
 484 <table width='100%'>
 485 <tr>
 486         <td align='center'><input type='hidden' name='ACTION2' value='snort' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 487 </tr>
 488 </table>
 489 </form>
 490 END
 491 ;
 492
 493 if ($results ne '') {
 494         print "$results";
 495 }
 496
 497 &Header::closebox();
 498
 499 ####################### Added for guardian control ####################################
 500 if ( -e "/var/ipfire/guardian/guardian.conf" ) {
 501         &Header::openbox('100%', 'LEFT', $Lang::tr{'guardian configuration'});
 502 print <<END
 503 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 504 <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>
 505 <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>
 506 <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>
 507 <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>
 508 <tr><td align='left' width='40%'>$Lang::tr{'guardian ignorefile'}</td><td align='left'><textarea name='IGNOREFILE_CONTENT' cols='32' rows='6' wrap='off'>
 509 END
 510 ;
 511         print `cat /var/ipfire/guardian/guardian.ignore`;
 512 print <<END
 513 </textarea></td></tr>
 514 <tr><td align='center' colspan='2'><input type='hidden' name='ACTION2' value='guardian' /><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td></tr>
 515 </table>
 516 </form>
 517 END
 518 ;
 519         &Header::closebox();
 520 }
 521
 522
 523
 524
 525 ####################### Added for snort rules control #################################
 526 if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable_green" || -e "${General::swroot}/snort/enable_blue" || -e "${General::swroot}/snort/enable_orange" ) {
 527         &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 528                 # Output display table for rule files
 529                 print "<TABLE width='100%'><TR><TD VALIGN='TOP'><TABLE>";
 530
 531                 print "<form method='post'>";
 532
 533                 # Local vars
 534                 my $ruledisplaycnt = 1;
 535                 my $rulecnt = keys %snortrules;
 536                 $rulecnt++;
 537                 $rulecnt = $rulecnt / 2;
 538
 539                 # Loop over each rule file
 540                 foreach my $rulefile (sort keys(%snortrules)) {
 541                         my $rulechecked = '';
 542
 543                         # Check if reached half-way through rule file rules to start new column
 544                 if ($ruledisplaycnt > $rulecnt) {
 545                                 print "</TABLE></TD><TD VALIGN='TOP'><TABLE>";
 546                                 $ruledisplaycnt = 0;
 547                         }
 548
 549                         # Check if rule file is enabled
 550                         if ($snortrules{$rulefile}{"State"} eq 'Enabled') {
 551                                 $rulechecked = 'CHECKED';
 552                         }
 553
 554                         # Create rule file link, vars array, and display flag
 555                         my $rulefilelink = "?RULEFILE=$rulefile";
 556                         my $rulefiletoclose = '';
 557                         my @queryvars = ();
 558                         my $displayrulefilerules = 0;
 559
 560                         # Check for passed in query string
 561                         if ($ENV{'QUERY_STRING'}) {
 562                                 # Split out vars
 563                                 @queryvars = split(/\&/, $ENV{'QUERY_STRING'});
 564
 565                                 # Loop over values
 566                                 foreach $value (@queryvars) {
 567                                         # Split out var pairs
 568                                         ($var, $linkedrulefile) = split(/=/, $value);
 569
 570                                         # Check if var is 'RULEFILE'
 571                                         if ($var eq 'RULEFILE') {
 572                                                 # Check if rulefile equals linkedrulefile
 573                                                 if ($rulefile eq $linkedrulefile) {
 574                                                         # Set display flag
 575                                                         $displayrulefilerules = 1;
 576
 577                                                         # Strip out rulefile from rulefilelink
 578                                                         $rulefilelink =~ s/RULEFILE=$linkedrulefile//g;
 579                                                 } else {
 580                                                         # Add linked rule file to rulefilelink
 581                                                         $rulefilelink .= "&RULEFILE=$linkedrulefile";
 582                                                 }
 583                                         }
 584                                 }
 585                         }
 586
 587                         # Strip out extra & & ? from rulefilelink
 588                         $rulefilelink =~ s/^\?\&/\?/i;
 589
 590                         # Check for a single '?' and replace with page for proper link display
 591                         if ($rulefilelink eq '?') {
 592                                 $rulefilelink = "ids.cgi";
 593                         }
 594
 595                         # Output rule file name and checkbox
 596                         print "<TR><TD CLASS='base' VALIGN='TOP'><INPUT TYPE='checkbox' NAME='SNORT_RULE_$rulefile' $rulechecked> <A HREF='$rulefilelink'>$rulefile</A></TD></TR>";
 597                         print "<TR><TD CLASS='base' VALIGN='TOP'>";
 598
 599                         # Check for empty 'Description'
 600                         if ($snortrules{$rulefile}{'Description'} eq '') {
 601                                 print "<TABLE WIDTH='100%'><TR><TD CLASS='base'>No description available</TD></TR>";
 602                         } else {
 603                                 # Output rule file 'Description'
 604                                 print "<TABLE WIDTH='100%'><TR><TD CLASS='base'>$snortrules{$rulefile}{'Description'}</TD></TR>";
 605                         }
 606
 607                         # Check for display flag
 608                         if ($displayrulefilerules) {
 609                                 # Rule file definition rule display
 610                                 print "<TR><TD CLASS='base' VALIGN='TOP'><TABLE border=1><TR>";
 611
 612                                 # Local vars
 613                                 my $ruledefdisplaycnt = 0;
 614                                 my $ruledefcnt = keys %{$snortrules{$rulefile}{"Definition"}};
 615                                 $ruledefcnt++;
 616                                 $ruledefcnt = $ruledefcnt / 2;
 617
 618                                 # Loop over rule file rules
 619                                 foreach my $ruledef (sort {$a <=> $b} keys(%{$snortrules{$rulefile}{"Definition"}})) {
 620                                         # Local vars
 621                                         my $ruledefchecked = '';
 622
 623                                         # If have display 2 rules, start new row
 624                                         if (($ruledefdisplaycnt % 2) == 0) {
 625                                                 print "</TR><TR>";
 626                                                 $ruledefdisplaycnt = 0;
 627                                         }
 628
 629                                         # Check for rules state
 630                                         if ($snortrules{$rulefile}{'Definition'}{$ruledef}{'State'} eq 'Enabled') {
 631                                                 $ruledefchecked = 'CHECKED';
 632                                         }
 633
 634                                         # Create rule file rule's checkbox
 635                                         $checkboxname = "SNORT_RULE_$rulefile";
 636                                         $checkboxname .= "_$ruledef";
 637                                         print "<TD CLASS='base'><INPUT TYPE='checkbox' NAME='$checkboxname' $ruledefchecked> $snortrules{$rulefile}{'Definition'}{$ruledef}{'Description'}</TD>";
 638
 639                                         # Increment count
 640                                         $ruledefdisplaycnt++;
 641                                 }
 642
 643                                 # If do not have second rule for row, create empty cell
 644                                 if (($ruledefdisplaycnt % 2) != 0) {
 645                                         print "<TD CLASS='base'></TD>";
 646                                 }
 647
 648                                 # Close display table
 649                                 print "</TR></TABLE></TD></TR>";
 650                 }
 651
 652                         # Close display table
 653                         print "</TABLE>";
 654
 655                         # Increment ruledisplaycnt
 656                 $ruledisplaycnt++;
 657                 }
 658         print "</TD></TR></TABLE></TD></TR></TABLE>";
 659         print <<END
 660 <table width='100%'>
 661 <tr>
 662         <td width='33%'>&nbsp;</td>
 663         <td width='33%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
 664         <td width='33%'>
 665                 &nbsp; <!-- space for future online help link -->
 666         </td>
 667 </tr>
 668 </table>
 669 </form>
 670 END
 671 ;
 672         &Header::closebox();
 673 }
 674
 675 #######################  End added for snort rules control  #################################
 676 &Header::closebigbox();
 677 &Header::closepage();
 678
 679 sub getmd5 {
 680         # Retrieve MD5 sum from $url.md5 file
 681         #
 682         my $md5buf = &geturl("$url.md5");
 683         return undef unless $md5buf;
 684
 685         if (0) { # 1 to debug
 686                 my $filename='';
 687                 my $fh='';
 688                 ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.md5' );
 689                 binmode ($fh);
 690                 syswrite ($fh, $md5buf->content);
 691                 close($fh);
 692         }
 693         return $md5buf->content;
 694 }
 695 sub downloadrulesfile {
 696         my $return = &geturl($url);
 697         return undef unless $return;
 698
 699         if (index($return->content, "\037\213") == -1 ) { # \037\213 is .gz beginning
 700                 $errormessage = $Lang::tr{'invalid loaded file'};
 701                 return undef;
 702         }
 703
 704         my $filename='';
 705         my $fh='';
 706         ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
 707         binmode ($fh);
 708         syswrite ($fh, $return->content);
 709         close($fh);
 710         return $filename;
 711 }
 712
 713 sub geturl ($) {
 714         my $url=$_[0];
 715
 716         unless (-e "${General::swroot}/red/active") {
 717                 $errormessage = $Lang::tr{'could not download latest updates'};
 718                 return undef;
 719         }
 720
 721         my $downloader = LWP::UserAgent->new;
 722         $downloader->timeout(5);
 723
 724         my %proxysettings=();
 725         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 726
 727         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 728                 my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 729                 if ($proxysettings{'UPSTREAM_USER'}) {
 730                         $downloader->proxy("http","http://$proxysettings{'UPSTREAM_USER'}:$proxysettings{'UPSTREAM_PASSWORD'}@"."$peer:$peerport/");
 731                 } else {
 732                         $downloader->proxy("http","http://$peer:$peerport/");
 733                 }
 734         }
 735
 736         my $return = $downloader->get($url,'Cache-Control','no-cache');
 737
 738         if ($return->code == 403) {
 739                 $errormessage = $Lang::tr{'access refused with this oinkcode'};
 740                 return undef;
 741         } elsif (!$return->is_success()) {
 742                 $errormessage = $Lang::tr{'could not download latest updates'};
 743                 return undef;
 744         }
 745
 746         return $return;
 747
 748 }