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 # $Id: ids.cgi,v 1.8.2.18 2005/07/27 21:35:22 franck78 Exp $
  10 #
  11
  12 use LWP::UserAgent;
  13 use File::Copy;
  14 use File::Temp qw/ tempfile tempdir /;
  15 use strict;
  16
  17 # enable only the following on debugging purpose
  18 #use warnings;
  19 #use CGI::Carp 'fatalsToBrowser';
  20
  21 require 'CONFIG_ROOT/general-functions.pl';
  22 require "${General::swroot}/lang.pl";
  23 require "${General::swroot}/header.pl";
  24
  25 my %snortsettings=();
  26 my %checked=();
  27 my %netsettings=();
  28 our $errormessage = '';
  29 our $md5 = '0';# not '' to avoid displaying the wrong message when INSTALLMD5 not set
  30 our $realmd5 = '';
  31 our $results = '';
  32 our $tempdir = '';
  33 our $url='';
  34 &General::readhash("${General::swroot}/ethernet/settings", \%netsettings);
  35
  36 &Header::showhttpheaders();
  37
  38 $snortsettings{'ENABLE_SNORT'} = 'off';
  39 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
  40 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
  41 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
  42 $snortsettings{'ACTION'} = '';
  43 $snortsettings{'RULESTYPE'} = '';
  44 $snortsettings{'OINKCODE'} = '';
  45 $snortsettings{'INSTALLDATE'} = '';
  46 $snortsettings{'INSTALLMD5'} = '';
  47
  48 &Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
  49
  50 if ($snortsettings{'RULESTYPE'} eq 'subscripted') {
  51         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.3_s.tar.gz";
  52 } else {
  53         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.3.tar.gz";
  54 }
  55
  56 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'})
  57 {
  58         $errormessage = $Lang::tr{'invalid input for oink code'} unless (
  59             ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/)  ||
  60             ($snortsettings{'RULESTYPE'} eq 'nothing' )       );
  61
  62         &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
  63         if ($snortsettings{'ENABLE_SNORT'} eq 'on')
  64         {
  65                 system ('/bin/touch', "${General::swroot}/snort/enable");
  66         } else {
  67                 unlink "${General::swroot}/snort/enable";
  68         }
  69         if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
  70         {
  71                 system ('/bin/touch', "${General::swroot}/snort/enable_green");
  72         } else {
  73                 unlink "${General::swroot}/snort/enable_green";
  74         }
  75         if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
  76         {
  77                 system ('/bin/touch', "${General::swroot}/snort/enable_blue");
  78         } else {
  79                 unlink "${General::swroot}/snort/enable_blue";
  80         }
  81         if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
  82         {
  83                 system ('/bin/touch', "${General::swroot}/snort/enable_orange");
  84         } else {
  85                 unlink "${General::swroot}/snort/enable_orange";
  86         }
  87
  88         system('/usr/local/bin/restartsnort','red','orange','blue','green');
  89 } else {
  90          # INSTALLMD5 is not in the form, so not retrieved by getcgihash
  91         &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
  92 }
  93
  94 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
  95         $md5 = &getmd5;
  96         if (($snortsettings{'INSTALLMD5'} ne $md5) && defined $md5 ) {
  97                 chomp($md5);
  98                 my $filename = &downloadrulesfile();
  99                 if (defined $filename) {
 100                         # Check MD5sum
 101                         $realmd5 = `/usr/bin/md5sum $filename`;
 102                         chomp ($realmd5);
 103                         $realmd5 =~ s/^(\w+)\s.*$/$1/;
 104                         if ($md5 ne $realmd5) {
 105                                 $errormessage = "$Lang::tr{'invalid md5sum'}";
 106                         } else {
 107                                 $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
 108                                 $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort 2>&1`;
 109                                 $results .= "</pre>";
 110                         }
 111                         unlink ($filename);
 112                 }
 113         }
 114 }
 115
 116 $checked{'ENABLE_SNORT'}{'off'} = '';
 117 $checked{'ENABLE_SNORT'}{'on'} = '';
 118 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 119 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 120 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 121 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 122 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 123 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 124 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 125 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 126 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 127 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 128 $checked{'RULESTYPE'}{'nothing'} = '';
 129 $checked{'RULESTYPE'}{'registered'} = '';
 130 $checked{'RULESTYPE'}{'subscripted'} = '';
 131 $checked{'RULESTYPE'}{$snortsettings{'RULESTYPE'}} = "checked='checked'";
 132
 133 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 134
 135 &Header::openbigbox('100%', 'left', '', $errormessage);
 136
 137 if ($errormessage) {
 138         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 139         print "<class name='base'>$errormessage\n";
 140         print "&nbsp;</class>\n";
 141         &Header::closebox();
 142 }
 143
 144 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system2'});
 145 print <<END
 146 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 147 <tr>
 148         <td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />
 149                 GREEN Snort</td>
 150 </tr>
 151 END
 152 ;
 153 if ($netsettings{'BLUE_DEV'} ne '') {
 154 print <<END
 155 <tr>
 156         <td class='base'><input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />
 157                 BLUE Snort</td>
 158 </tr>
 159 END
 160 ;
 161 }
 162 if ($netsettings{'ORANGE_DEV'} ne '') {
 163 print <<END
 164 <tr>
 165         <td class='base'><input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />
 166                 ORANGE Snort</td>
 167 </tr>
 168 END
 169 ;
 170 }
 171 print <<END
 172 <tr>
 173         <td class='base'><input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />
 174                 RED Snort</td>
 175 </tr>
 176 <tr>
 177         <td><hr /></td>
 178 </tr>
 179 <tr>
 180         <td><b>$Lang::tr{'ids rules update'}</b></td>
 181 </tr>
 182 <tr>
 183         <td><input type='radio' name='RULESTYPE' value='nothing' $checked{'RULESTYPE'}{'nothing'} />
 184                 $Lang::tr{'no'}</td>
 185 </tr>
 186 <tr>
 187         <td><input type='radio' name='RULESTYPE' value='registered' $checked{'RULESTYPE'}{'registered'} />
 188                 $Lang::tr{'registered user rules'}</td>
 189 </tr>
 190 <tr>
 191         <td><input type='radio' name='RULESTYPE' value='subscripted' $checked{'RULESTYPE'}{'subscripted'} />
 192                 $Lang::tr{'subscripted user rules'}</td>
 193 </tr>
 194 <tr>
 195         <td><br />
 196                 $Lang::tr{'ids rules license'} <a href='http://www.snort.org/' target='_blank'>http://www.snort.org</a>.<br />
 197                 <br />
 198                 $Lang::tr{'ids rules license2'} <a href='http://www.snort.org/reg-bin/userprefs.cgi' target='_blank'>USER PREFERENCES</a>, $Lang::tr{'ids rules license3'}<br />
 199         </td>
 200 </tr>
 201 <tr>
 202         <td nowrap='nowrap'>Oink Code:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 203 </tr>
 204 <tr>
 205         <td width='30%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 206 END
 207 ;
 208
 209 if ($snortsettings{'INSTALLMD5'} eq $md5) {
 210         print "&nbsp;$Lang::tr{'rules already up to date'}</td>";
 211 } else {
 212         if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} && $md5 eq $realmd5 ) {
 213                 $snortsettings{'INSTALLMD5'} = $realmd5;
 214                 $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
 215                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 216         }
 217         print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 218 }
 219 print <<END
 220 </tr>
 221 </table>
 222 <hr />
 223 <table width='100%'>
 224 <tr>
 225         <td width='55%'>&nbsp;</td>
 226         <td width='40%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 227         <td width='5%'>
 228                 &nbsp; <!-- space for future online help link -->
 229         </td>
 230 </tr>
 231 </table>
 232 </form>
 233 END
 234 ;
 235
 236 if ($results ne '') {
 237         print "$results";
 238 }
 239
 240 &Header::closebox();
 241 &Header::closebigbox();
 242 &Header::closepage();
 243
 244 sub getmd5 {
 245         # Retrieve MD5 sum from $url.md5 file
 246         #
 247         my $md5buf = &geturl("$url.md5");
 248         return undef unless $md5buf;
 249
 250         if (0) { # 1 to debug
 251                 my $filename='';
 252                 my $fh='';
 253                 ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.md5' );
 254                 binmode ($fh);
 255                 syswrite ($fh, $md5buf->content);
 256                 close($fh);
 257         }
 258         return $md5buf->content;
 259 }
 260 sub downloadrulesfile {
 261         my $return = &geturl($url);
 262         return undef unless $return;
 263
 264         if (index($return->content, "\037\213") == -1 ) { # \037\213 is .gz beginning
 265                 $errormessage = $Lang::tr{'invalid loaded file'};
 266                 return undef;
 267         }
 268
 269         my $filename='';
 270         my $fh='';
 271         ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
 272         binmode ($fh);
 273         syswrite ($fh, $return->content);
 274         close($fh);
 275         return $filename;
 276 }
 277
 278 sub geturl ($) {
 279         my $url=$_[0];
 280
 281         unless (-e "${General::swroot}/red/active") {
 282                 $errormessage = $Lang::tr{'could not download latest updates'};
 283                 return undef;
 284         }
 285
 286         my $downloader = LWP::UserAgent->new;
 287         $downloader->timeout(5);
 288
 289         my %proxysettings=();
 290         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 291
 292         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 293                 my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 294                 if ($proxysettings{'UPSTREAM_USER'}) {
 295                         $downloader->proxy("http","http://$proxysettings{'UPSTREAM_USER'}:$proxysettings{'UPSTREAM_PASSWORD'}@"."$peer:$peerport/");
 296                 } else {
 297                         $downloader->proxy("http","http://$peer:$peerport/");
 298                 }
 299         }
 300
 301         my $return = $downloader->get($url,'Cache-Control','no-cache');
 302
 303         if ($return->code == 403) {
 304                 $errormessage = $Lang::tr{'access refused with this oinkcode'};
 305                 return undef;
 306         } elsif (!$return->is_success()) {
 307                 $errormessage = $Lang::tr{'could not download latest updates'};
 308                 return undef;
 309         }
 310
 311         return $return;
 312
 313 }