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