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