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 %snortsettings=();
  24 my %checked=();
  25 my %selected=();
  26 my %netsettings=();
  27 our $errormessage = '';
  28 our $md5 = '0';# not '' to avoid displaying the wrong message when INSTALLMD5 not set
  29 our $realmd5 = '';
  30 our $results = '';
  31 our $tempdir = '';
  32 our $url='';
  33 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  34
  35 &Header::showhttpheaders();
  36
  37 $snortsettings{'ENABLE_SNORT'} = 'off';
  38 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
  39 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
  40 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
  41 $snortsettings{'ACTION'} = '';
  42 $snortsettings{'RULES'} = '';
  43 $snortsettings{'OINKCODE'} = '';
  44 $snortsettings{'INSTALLDATE'} = '';
  45 $snortsettings{'INSTALLMD5'} = '';
  46
  47 &Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
  48
  49 ####################### Added for snort rules control #################################
  50 my $snortrulepath;
  51 my @snortconfig;
  52 my $restartsnortrequired = 0;
  53 my %snortrules;
  54 my $rule = '';
  55 my $table1colour = '';
  56 my $table2colour = '';
  57 my $var = '';
  58 my $value = '';
  59 my $tmp = '';
  60 my $linkedrulefile = '';
  61 my $border = '';
  62 my $checkboxname = '';
  63
  64 if (-e "/etc/snort/snort.conf") {
  65         # Open snort.conf file, read it in, close it, and re-open for writing
  66         open(FILE, "/etc/snort/snort.conf") or die 'Unable to read snort config file.';
  67         @snortconfig = <FILE>;
  68         close(FILE);
  69         open(FILE, ">/etc/snort/snort.conf") or die 'Unable to write snort config file.';
  70
  71         # Loop over each line
  72         foreach my $line (@snortconfig) {
  73                 # Trim the line
  74                 chomp $line;
  75
  76                 # Check for a line with .rules
  77                 if ($line =~ /\.rules$/) {
  78                         # Parse out rule file name
  79                         $rule = $line;
  80                         $rule =~ s/\$RULE_PATH\///i;
  81                         $rule =~ s/ ?include ?//i;
  82                         $rule =~ s/\#//i;
  83                         my $snortrulepathrule = "$snortrulepath/$rule";
  84
  85                         # Open rule file and read in contents
  86                         open(RULEFILE, "$snortrulepath/$rule") or die "Unable to read snort rule file for reading => $snortrulepath/$rule.";
  87                         my @snortrulefile = <RULEFILE>;
  88                         close(RULEFILE);
  89                         open(RULEFILE, ">$snortrulepath/$rule") or die "Unable to write snort rule file for writing $snortrulepath/$rule";
  90
  91                         # Local vars
  92                         my $dashlinecnt = 0;
  93                         my $desclook = 1;
  94                         my $snortruledesc = '';
  95                         my %snortruledef = ();
  96                         my $rulecnt = 1;
  97
  98                         # Loop over rule file contents
  99                         foreach my $ruleline (@snortrulefile) {
 100                                 chomp $ruleline;
 101
 102                                 # If still looking for a description
 103                                 if ($desclook) {
 104                                         # If line does not start with a # anymore, then done looking for a description
 105                                         if ($ruleline !~ /^\#/) {
 106                                                 $desclook = 0;
 107                                         }
 108
 109                                         # If see more than one dashed line, (start to) create rule file description
 110                                         if ($dashlinecnt > 1) {
 111                                                 # Check for a line starting with a #
 112                                                 if ($ruleline =~ /^\#/) {
 113                                                         # Create tempruleline
 114                                                         my $tempruleline = $ruleline;
 115
 116                                                         # Strip off # and clean up line
 117                                                         $tempruleline =~ s/\# ?//i;
 118
 119                                                         # Check for part of a description
 120                                                         if ($snortruledesc eq '') {
 121                                                                 $snortruledesc = $tempruleline;
 122                                                         } else {
 123                                                                 $snortruledesc .= " $tempruleline";
 124                                                         }
 125                                                 } else {
 126                                                         # Must be done
 127                                                         $desclook = 0;
 128                                                 }
 129                                         }
 130
 131                                         # If have a dashed line, increment count
 132                                         if ($ruleline =~ /\# ?\-+/) {
 133                                                 $dashlinecnt++;
 134                                         }
 135                                 } else {
 136                                         # Parse out rule file rule's message for display
 137                                         if ($ruleline =~ /(msg\:\"[^\"]+\";)/) {
 138                                                 my $msg = '';
 139                                                 $msg = $1;
 140                                                 $msg =~ s/msg\:\"//i;
 141                                                 $msg =~ s/\";//i;
 142                                                 $snortruledef{$rulecnt}{'Description'} = $msg;
 143
 144                                                 # Check for 'Save' and rule file displayed in query string
 145                                                 if (($snortsettings{'ACTION'} eq $Lang::tr{'update'}) && ($ENV{'QUERY_STRING'} =~ /$rule/i)) {
 146                                                         # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 147                                                         if ((($ruleline =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"})) || (($ruleline !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}))) {
 148                                                                 $restartsnortrequired = 1;
 149                                                         }
 150
 151                                                         # Strip out leading # from rule line
 152                                                         $ruleline =~ s/\# ?//i;
 153
 154                                                         # Check if it does not exists (which means it is disabled), append a #
 155                                                         if (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}) {
 156                                                                 $ruleline = "#"." $ruleline";
 157                                                         }
 158                                                 }
 159
 160                                                 # Check if ruleline does not begin with a #, so it is enabled
 161                                                 if ($ruleline !~ /^\#/) {
 162                                                         $snortruledef{$rulecnt++}{'State'} = 'Enabled';
 163                                                 } else {
 164                                                         # Otherwise it is disabled
 165                                                         $snortruledef{$rulecnt++}{'State'} = 'Disabled';
 166                                                 }
 167                                         }
 168                                 }
 169
 170                                 # Print ruleline to RULEFILE
 171                                 print RULEFILE "$ruleline\n";
 172                         }
 173
 174                         # Close RULEFILE
 175                         close(RULEFILE);
 176
 177                         # Check for 'Save'
 178                         if ($snortsettings{'ACTION'} eq $Lang::tr{'update'}) {
 179                                 # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
 180                                 if ((($line =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule"})) || (($line !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule"}))) {
 181                                         $restartsnortrequired = 1;
 182                                 }
 183
 184                                 # Strip out leading # from rule line
 185                                 $line =~ s/\# ?//i;
 186
 187                                 # Check if it does not exists (which means it is disabled), append a #
 188                                 if (!exists $snortsettings{"SNORT_RULE_$rule"}) {
 189                                         $line = "# $line";
 190                                 }
 191                         }
 192
 193                         # Check for rule state
 194                         if ($line =~ /^\#/) {
 195                                 $snortrules{$rule}{"State"} = "Disabled";
 196                         } else {
 197                                 $snortrules{$rule}{"State"} = "Enabled";
 198                         }
 199
 200                         # Set rule description
 201                         $snortrules{$rule}{"Description"} = $snortruledesc;
 202
 203                         # Loop over sorted rules
 204                         foreach my $ruledef (sort {$a <=> $b} keys(%snortruledef)) {
 205                                 $snortrules{$rule}{"Definition"}{$ruledef}{'Description'} = $snortruledef{$ruledef}{'Description'};
 206                                 $snortrules{$rule}{"Definition"}{$ruledef}{'State'} = $snortruledef{$ruledef}{'State'};
 207                         }
 208
 209                         $snortruledesc = '';
 210                         print FILE "$line\n";
 211                 } elsif ($line =~ /var RULE_PATH/) {
 212                         ($tmp, $tmp, $snortrulepath) = split(' ', $line);
 213                         print FILE "$line\n";
 214                 } else {
 215                         print FILE "$line\n";
 216                 }
 217         }
 218         close(FILE);
 219
 220         if ($restartsnortrequired) {
 221                 system('/usr/local/bin/restartsnort','red','orange','blue','green');
 222         }
 223 }
 224
 225 #######################  End added for snort rules control  #################################
 226
 227 if ($snortsettings{'RULES'} eq 'subscripted') {
 228         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-CURRENT_s.tar.gz";
 229 } elsif ($snortsettings{'RULES'} eq 'registered') {
 230         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-CURRENT.tar.gz";
 231 } elsif ($snortsettings{'RULES'} eq 'bleeding') {
 232         $url="http://www.bleedingsnort.com/bleeding.rules.tar.gz";
 233 } else {
 234         $url="http://www.snort.org/pub-bin/downloads.cgi/Download/comm_rules/Community-Rules-CURRENT.tar.gz";
 235 }
 236
 237 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'})
 238 {
 239         $errormessage = $Lang::tr{'invalid input for oink code'} unless (
 240             ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/)  ||
 241             ($snortsettings{'RULESTYPE'} eq 'nothing' )       );
 242
 243         &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 244         if ($snortsettings{'ENABLE_SNORT'} eq 'on')
 245         {
 246                 system ('/usr/bin/touch', "${General::swroot}/snort/enable");
 247         } else {
 248                 unlink "${General::swroot}/snort/enable";
 249         }
 250         if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
 251         {
 252                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
 253         } else {
 254                 unlink "${General::swroot}/snort/enable_green";
 255         }
 256         if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
 257         {
 258                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
 259         } else {
 260                 unlink "${General::swroot}/snort/enable_blue";
 261         }
 262         if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
 263         {
 264                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
 265         } else {
 266                 unlink "${General::swroot}/snort/enable_orange";
 267         }
 268
 269         system('/usr/local/bin/restartsnort','red','orange','blue','green');
 270
 271 } else {
 272          # INSTALLMD5 is not in the form, so not retrieved by getcgihash
 273         &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 274 }
 275
 276 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
 277         $md5 = &getmd5;
 278         if (($snortsettings{'INSTALLMD5'} ne $md5) && defined $md5 ) {
 279                 chomp($md5);
 280                 my $filename = &downloadrulesfile();
 281                 if (defined $filename) {
 282                         # Check MD5sum
 283                         $realmd5 = `/usr/bin/md5sum $filename`;
 284                         chomp ($realmd5);
 285                         $realmd5 =~ s/^(\w+)\s.*$/$1/;
 286                         if ($md5 ne $realmd5) {
 287                                 $errormessage = "$Lang::tr{'invalid md5sum'}";
 288                         } else {
 289                                 $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
 290                                 $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules 2>&1`;
 291                                 $results .= "</pre>";
 292                         }
 293                         unlink ($filename);
 294                 }
 295         }
 296 }
 297
 298 $checked{'ENABLE_SNORT'}{'off'} = '';
 299 $checked{'ENABLE_SNORT'}{'on'} = '';
 300 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 301 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 302 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 303 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 304 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 305 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 306 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 307 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 308 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 309 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 310 $selected{'RULES'}{'nothing'} = '';
 311 $selected{'RULES'}{'bleeding'} = '';
 312 $selected{'RULES'}{'community'} = '';
 313 $selected{'RULES'}{'registered'} = '';
 314 $selected{'RULES'}{'subscripted'} = '';
 315 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 316
 317 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 318
 319 ####################### Added for snort rules control #################################
 320 print "<SCRIPT LANGUAGE='JavaScript' SRC='/include/snortupdateutility.js'></SCRIPT>";
 321 print <<END
 322 <STYLE TYPE="text/css">
 323 <!--
 324 .section {
 325         border: groove;
 326 }
 327 .row1color {
 328         border: ridge;
 329         background-color: $table1colour;
 330 }
 331 .row2color {
 332         border: ridge;
 333         background-color: $table2colour;
 334 }
 335 .rowselected {
 336         border: double #FF0000;
 337         background-color: #DCDCDC;
 338 }
 339 -->
 340 </STYLE>
 341 END
 342 ;
 343 #######################  End added for snort rules control  #################################
 344
 345 &Header::openbigbox('100%', 'left', '', $errormessage);
 346
 347 if ($errormessage) {
 348         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 349         print "<class name='base'>$errormessage\n";
 350         print "&nbsp;</class>\n";
 351         &Header::closebox();
 352 }
 353
 354 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system2'});
 355 print <<END
 356 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 357 <tr>
 358         <td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />
 359                 GREEN Snort</td>
 360 </tr>
 361 END
 362 ;
 363 if ($netsettings{'BLUE_DEV'} ne '') {
 364 print <<END
 365 <tr>
 366         <td class='base'><input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />
 367                 BLUE Snort</td>
 368 </tr>
 369 END
 370 ;
 371 }
 372 if ($netsettings{'ORANGE_DEV'} ne '') {
 373 print <<END
 374 <tr>
 375         <td class='base'><input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />
 376                 ORANGE Snort</td>
 377 </tr>
 378 END
 379 ;
 380 }
 381 print <<END
 382 <tr>
 383         <td class='base'><input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />
 384                 RED Snort</td>
 385 </tr>
 386 <tr>
 387         <td><hr /></td>
 388 </tr>
 389 <tr>
 390         <td><b>$Lang::tr{'ids rules update'}</b></td>
 391 </tr>
 392 <tr>
 393         <td><select name='RULES'>
 394                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 395                                 <option value='bleeding' $selected{'RULES'}{'bleeding'} >$Lang::tr{'bleeding rules'}</option>
 396                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 397                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 398                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 399                         </select>
 400         </td>
 401 </tr>
 402 <tr>
 403         <td><br />
 404                 $Lang::tr{'ids rules license'} <a href='http://www.snort.org/' target='_blank'>http://www.snort.org</a>.<br />
 405                 <br />
 406                 $Lang::tr{'ids rules license2'} <a href='http://www.snort.org/reg-bin/userprefs.cgi' target='_blank'>USER PREFERENCES</a>, $Lang::tr{'ids rules license3'}<br />
 407         </td>
 408 </tr>
 409 <tr>
 410         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 411 </tr>
 412 <tr>
 413         <td width='30%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 414 END
 415 ;
 416
 417 if ($snortsettings{'INSTALLMD5'} eq $md5) {
 418         print "&nbsp;$Lang::tr{'rules already up to date'}</td>";
 419 } else {
 420         if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} && $md5 eq $realmd5 ) {
 421                 $snortsettings{'INSTALLMD5'} = $realmd5;
 422                 $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
 423                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 424         }
 425         print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 426 }
 427 print <<END
 428 </tr>
 429 </table>
 430 <hr />
 431 <table width='100%'>
 432 <tr>
 433         <td width='55%'>&nbsp;</td>
 434         <td width='40%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 435         <td width='5%'>
 436                 &nbsp; <!-- space for future online help link -->
 437         </td>
 438 </tr>
 439 </table>
 440 </form>
 441 END
 442 ;
 443
 444 if ($results ne '') {
 445         print "$results";
 446 }
 447
 448 &Header::closebox();
 449 ####################### Added for snort rules control #################################
 450 if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable_green" || -e "${General::swroot}/snort/enable_blue" || -e "${General::swroot}/snort/enable_orange" ) {
 451         &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
 452                 # Output display table for rule files
 453                 print "<TABLE BORDER='$border'><TR><TD VALIGN='TOP'><TABLE BORDER='$border'>";
 454
 455                 print "<form method='post'>";
 456
 457                 # Local vars
 458                 my $ruledisplaycnt = 1;
 459                 my $rulecnt = keys %snortrules;
 460                 $rulecnt++;
 461                 $rulecnt = $rulecnt / 2;
 462
 463                 # Loop over each rule file
 464                 foreach my $rulefile (sort keys(%snortrules)) {
 465                         my $rulechecked = '';
 466
 467                         # Check if reached half-way through rule file rules to start new column
 468                         if ($ruledisplaycnt > $rulecnt) {
 469                                 print "</TABLE></TD><TD VALIGN='TOP'><TABLE BORDER='$border'>";
 470                                 $ruledisplaycnt = 0;
 471                         }
 472
 473                         # Check if rule file is enabled
 474                         if ($snortrules{$rulefile}{"State"} eq 'Enabled') {
 475                                 $rulechecked = 'CHECKED';
 476                         }
 477
 478                         # Create rule file link, vars array, and display flag
 479                         my $rulefilelink = "?RULEFILE=$rulefile";
 480                         my $rulefiletoclose = '';
 481                         my @queryvars = ();
 482                         my $displayrulefilerules = 0;
 483
 484                         # Check for passed in query string
 485                         if ($ENV{'QUERY_STRING'}) {
 486                                 # Split out vars
 487                                 @queryvars = split(/\&/, $ENV{'QUERY_STRING'});
 488
 489                                 # Loop over values
 490                                 foreach $value (@queryvars) {
 491                                         # Split out var pairs
 492                                         ($var, $linkedrulefile) = split(/=/, $value);
 493
 494                                         # Check if var is 'RULEFILE'
 495                                         if ($var eq 'RULEFILE') {
 496                                                 # Check if rulefile equals linkedrulefile
 497                                                 if ($rulefile eq $linkedrulefile) {
 498                                                         # Set display flag
 499                                                         $displayrulefilerules = 1;
 500
 501                                                         # Strip out rulefile from rulefilelink
 502                                                         $rulefilelink =~ s/RULEFILE=$linkedrulefile//g;
 503                                                 } else {
 504                                                         # Add linked rule file to rulefilelink
 505                                                         $rulefilelink .= "&RULEFILE=$linkedrulefile";
 506                                                 }
 507                                         }
 508                                 }
 509                         }
 510
 511                         # Strip out extra & & ? from rulefilelink
 512                         $rulefilelink =~ s/^\?\&/\?/i;
 513
 514                         # Check for a single '?' and replace with page for proper link display
 515                         if ($rulefilelink eq '?') {
 516                                 $rulefilelink = "ids.cgi";
 517                         }
 518
 519                         # Output rule file name and checkbox
 520                         print "<TR><TD CLASS='base' VALIGN='TOP'><INPUT TYPE='checkbox' NAME='SNORT_RULE_$rulefile' $rulechecked> <A HREF='$rulefilelink'>$rulefile</A></TD></TR>";
 521                         print "<TR><TD CLASS='base' VALIGN='TOP'>";
 522
 523                         # Check for empty 'Description'
 524                         if ($snortrules{$rulefile}{'Description'} eq '') {
 525                                 print "<TABLE BORDER='$border' CLASS='section' WIDTH='100%'><TR><TD CLASS='base'>No description available</TD></TR>";
 526                         } else {
 527                                 # Output rule file 'Description'
 528                                 print "<TABLE BORDER='$border' CLASS='section' WIDTH='100%'><TR><TD CLASS='base'>$snortrules{$rulefile}{'Description'}</TD></TR>";
 529                         }
 530
 531                         # Check for display flag
 532                         if ($displayrulefilerules) {
 533                                 # Rule file definition rule display
 534                                 print "<TR><TD CLASS='base' VALIGN='TOP'><TABLE BORDER='$border'><TR>";
 535
 536                                 # Local vars
 537                                 my $ruledefdisplaycnt = 0;
 538                                 my $ruledefcnt = keys %{$snortrules{$rulefile}{"Definition"}};
 539                                 $ruledefcnt++;
 540                                 $ruledefcnt = $ruledefcnt / 2;
 541
 542                                 # Loop over rule file rules
 543                                 foreach my $ruledef (sort {$a <=> $b} keys(%{$snortrules{$rulefile}{"Definition"}})) {
 544                                         # Local vars
 545                                         my $ruledefchecked = '';
 546
 547                                         # If have display 2 rules, start new row
 548                                         if (($ruledefdisplaycnt % 2) == 0) {
 549                                                 print "</TR><TR>";
 550                                                 $ruledefdisplaycnt = 0;
 551                                         }
 552
 553                                         # Check for rules state
 554                                         if ($snortrules{$rulefile}{'Definition'}{$ruledef}{'State'} eq 'Enabled') {
 555                                                 $ruledefchecked = 'CHECKED';
 556                                         }
 557
 558                                         # Create rule file rule's checkbox
 559                                         $checkboxname = "SNORT_RULE_$rulefile";
 560                                         $checkboxname .= "_$ruledef";
 561                                         print "<TD CLASS='base'><INPUT TYPE='checkbox' NAME='$checkboxname' $ruledefchecked> $snortrules{$rulefile}{'Definition'}{$ruledef}{'Description'}</TD>";
 562
 563                                         # Increment count
 564                                         $ruledefdisplaycnt++;
 565                                 }
 566
 567                                 # If do not have second rule for row, create empty cell
 568                                 if (($ruledefdisplaycnt % 2) != 0) {
 569                                         print "<TD CLASS='base'></TD>";
 570                                 }
 571
 572                                 # Close display table
 573                                 print "</TR></TABLE></TD></TR>";
 574                         }
 575
 576                         # Close display table
 577                         print "</TABLE>";
 578
 579                         # Increment ruledisplaycnt
 580                         $ruledisplaycnt++;
 581                 }
 582
 583         print "</TD></TR></TABLE></TD></TR></TABLE>";
 584         print <<END
 585 <table width='100%'>
 586 <tr>
 587         <td width='33%'>&nbsp;</td>
 588         <td width='33%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'update'}' /></td>
 589         <td width='33%'>
 590                 &nbsp; <!-- space for future online help link -->
 591         </td>
 592 </tr>
 593 </table>
 594 </form>
 595 END
 596 ;
 597         &Header::closebox();
 598 }
 599 #######################  End added for snort rules control  #################################
 600 &Header::closebigbox();
 601 &Header::closepage();
 602
 603 sub getmd5 {
 604         # Retrieve MD5 sum from $url.md5 file
 605         #
 606         my $md5buf = &geturl("$url.md5");
 607         return undef unless $md5buf;
 608
 609         if (0) { # 1 to debug
 610                 my $filename='';
 611                 my $fh='';
 612                 ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.md5' );
 613                 binmode ($fh);
 614                 syswrite ($fh, $md5buf->content);
 615                 close($fh);
 616         }
 617         return $md5buf->content;
 618 }
 619 sub downloadrulesfile {
 620         my $return = &geturl($url);
 621         return undef unless $return;
 622
 623         if (index($return->content, "\037\213") == -1 ) { # \037\213 is .gz beginning
 624                 $errormessage = $Lang::tr{'invalid loaded file'};
 625                 return undef;
 626         }
 627
 628         my $filename='';
 629         my $fh='';
 630         ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
 631         binmode ($fh);
 632         syswrite ($fh, $return->content);
 633         close($fh);
 634         return $filename;
 635 }
 636
 637 sub geturl ($) {
 638         my $url=$_[0];
 639
 640         unless (-e "${General::swroot}/red/active") {
 641                 $errormessage = $Lang::tr{'could not download latest updates'};
 642                 return undef;
 643         }
 644
 645         my $downloader = LWP::UserAgent->new;
 646         $downloader->timeout(5);
 647
 648         my %proxysettings=();
 649         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 650
 651         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 652                 my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 653                 if ($proxysettings{'UPSTREAM_USER'}) {
 654                         $downloader->proxy("http","http://$proxysettings{'UPSTREAM_USER'}:$proxysettings{'UPSTREAM_PASSWORD'}@"."$peer:$peerport/");
 655                 } else {
 656                         $downloader->proxy("http","http://$peer:$peerport/");
 657                 }
 658         }
 659
 660         my $return = $downloader->get($url,'Cache-Control','no-cache');
 661
 662         if ($return->code == 403) {
 663                 $errormessage = $Lang::tr{'access refused with this oinkcode'};
 664                 return undef;
 665         } elsif (!$return->is_success()) {
 666                 $errormessage = $Lang::tr{'could not download latest updates'};
 667                 return undef;
 668         }
 669
 670         return $return;
 671
 672 }