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 $snortsettings{'INSTALLMD5'} = '';
  46
  47 &Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
  48
  49 if ($snortsettings{'RULES'} eq 'subscripted') {
  50         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-CURRENT_s.tar.gz";
  51 } elsif ($snortsettings{'RULES'} eq 'registered') {
  52         $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-CURRENT.tar.gz";
  53 } elsif ($snortsettings{'RULES'} eq 'bleeding') {
  54         $url="http://www.bleedingsnort.com/bleeding.rules.tar.gz";
  55 } else {
  56         $url="http://www.snort.org/pub-bin/downloads.cgi/Download/comm_rules/Community-Rules-CURRENT.tar.gz";
  57 }
  58
  59 if ($snortsettings{'ACTION'} eq $Lang::tr{'save'})
  60 {
  61         $errormessage = $Lang::tr{'invalid input for oink code'} unless (
  62             ($snortsettings{'OINKCODE'} =~ /^[a-z0-9]+$/)  ||
  63             ($snortsettings{'RULESTYPE'} eq 'nothing' )       );
  64
  65         &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
  66         if ($snortsettings{'ENABLE_SNORT'} eq 'on')
  67         {
  68                 system ('/usr/bin/touch', "${General::swroot}/snort/enable");
  69         } else {
  70                 unlink "${General::swroot}/snort/enable";
  71         }
  72         if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
  73         {
  74                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
  75         } else {
  76                 unlink "${General::swroot}/snort/enable_green";
  77         }
  78         if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
  79         {
  80                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
  81         } else {
  82                 unlink "${General::swroot}/snort/enable_blue";
  83         }
  84         if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
  85         {
  86                 system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
  87         } else {
  88                 unlink "${General::swroot}/snort/enable_orange";
  89         }
  90
  91         system('/usr/local/bin/restartsnort','red','orange','blue','green');
  92 } else {
  93          # INSTALLMD5 is not in the form, so not retrieved by getcgihash
  94         &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
  95 }
  96
  97 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
  98         $md5 = &getmd5;
  99         if (($snortsettings{'INSTALLMD5'} ne $md5) && defined $md5 ) {
 100                 chomp($md5);
 101                 my $filename = &downloadrulesfile();
 102                 if (defined $filename) {
 103                         # Check MD5sum
 104                         $realmd5 = `/usr/bin/md5sum $filename`;
 105                         chomp ($realmd5);
 106                         $realmd5 =~ s/^(\w+)\s.*$/$1/;
 107                         if ($md5 ne $realmd5) {
 108                                 $errormessage = "$Lang::tr{'invalid md5sum'}";
 109                         } else {
 110                                 $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
 111                                 $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules/ 2>&1`;
 112                                 $results .= "</pre>";
 113                         }
 114                         unlink ($filename);
 115                 }
 116         }
 117 }
 118
 119 $checked{'ENABLE_SNORT'}{'off'} = '';
 120 $checked{'ENABLE_SNORT'}{'on'} = '';
 121 $checked{'ENABLE_SNORT'}{$snortsettings{'ENABLE_SNORT'}} = "checked='checked'";
 122 $checked{'ENABLE_SNORT_GREEN'}{'off'} = '';
 123 $checked{'ENABLE_SNORT_GREEN'}{'on'} = '';
 124 $checked{'ENABLE_SNORT_GREEN'}{$snortsettings{'ENABLE_SNORT_GREEN'}} = "checked='checked'";
 125 $checked{'ENABLE_SNORT_BLUE'}{'off'} = '';
 126 $checked{'ENABLE_SNORT_BLUE'}{'on'} = '';
 127 $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='checked'";
 128 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 129 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 130 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
 131 $selected{'RULES'}{'nothing'} = '';
 132 $selected{'RULES'}{'bleeding'} = '';
 133 $selected{'RULES'}{'community'} = '';
 134 $selected{'RULES'}{'registered'} = '';
 135 $selected{'RULES'}{'subscripted'} = '';
 136 $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 137
 138 &Header::openpage($Lang::tr{'intrusion detection system'}, 1, '');
 139
 140 &Header::openbigbox('100%', 'left', '', $errormessage);
 141
 142 if ($errormessage) {
 143         &Header::openbox('100%', 'left', $Lang::tr{'error messages'});
 144         print "<class name='base'>$errormessage\n";
 145         print "&nbsp;</class>\n";
 146         &Header::closebox();
 147 }
 148
 149 &Header::openbox('100%', 'left', $Lang::tr{'intrusion detection system2'});
 150 print <<END
 151 <form method='post' action='$ENV{'SCRIPT_NAME'}'><table width='100%'>
 152 <tr>
 153         <td class='base'><input type='checkbox' name='ENABLE_SNORT_GREEN' $checked{'ENABLE_SNORT_GREEN'}{'on'} />
 154                 GREEN Snort</td>
 155 </tr>
 156 END
 157 ;
 158 if ($netsettings{'BLUE_DEV'} ne '') {
 159 print <<END
 160 <tr>
 161         <td class='base'><input type='checkbox' name='ENABLE_SNORT_BLUE' $checked{'ENABLE_SNORT_BLUE'}{'on'} />
 162                 BLUE Snort</td>
 163 </tr>
 164 END
 165 ;
 166 }
 167 if ($netsettings{'ORANGE_DEV'} ne '') {
 168 print <<END
 169 <tr>
 170         <td class='base'><input type='checkbox' name='ENABLE_SNORT_ORANGE' $checked{'ENABLE_SNORT_ORANGE'}{'on'} />
 171                 ORANGE Snort</td>
 172 </tr>
 173 END
 174 ;
 175 }
 176 print <<END
 177 <tr>
 178         <td class='base'><input type='checkbox' name='ENABLE_SNORT' $checked{'ENABLE_SNORT'}{'on'} />
 179                 RED Snort</td>
 180 </tr>
 181 <tr>
 182         <td><hr /></td>
 183 </tr>
 184 <tr>
 185         <td><b>$Lang::tr{'ids rules update'}</b></td>
 186 </tr>
 187 <tr>
 188         <td><select name='RULES'>
 189                                 <option value='nothing' $selected{'RULES'}{'nothing'} >$Lang::tr{'no'}</option>
 190                                 <option value='bleeding' $selected{'RULES'}{'bleeding'} >$Lang::tr{'bleeding rules'}</option>
 191                                 <option value='community' $selected{'RULES'}{'community'} >$Lang::tr{'community rules'}</option>
 192                                 <option value='registered' $selected{'RULES'}{'registered'} >$Lang::tr{'registered user rules'}</option>
 193                                 <option value='subscripted' $selected{'RULES'}{'subscripted'} >$Lang::tr{'subscripted user rules'}</option>
 194                         </select>
 195         </td>
 196 </tr>
 197 <tr>
 198         <td><br />
 199                 $Lang::tr{'ids rules license'} <a href='http://www.snort.org/' target='_blank'>http://www.snort.org</a>.<br />
 200                 <br />
 201                 $Lang::tr{'ids rules license2'} <a href='http://www.snort.org/reg-bin/userprefs.cgi' target='_blank'>USER PREFERENCES</a>, $Lang::tr{'ids rules license3'}<br />
 202         </td>
 203 </tr>
 204 <tr>
 205         <td nowrap='nowrap'>Oinkcode:&nbsp;<input type='text' size='40' name='OINKCODE' value='$snortsettings{'OINKCODE'}' /></td>
 206 </tr>
 207 <tr>
 208         <td width='30%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'download new ruleset'}' />
 209 END
 210 ;
 211
 212 if ($snortsettings{'INSTALLMD5'} eq $md5) {
 213         print "&nbsp;$Lang::tr{'rules already up to date'}</td>";
 214 } else {
 215         if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} && $md5 eq $realmd5 ) {
 216                 $snortsettings{'INSTALLMD5'} = $realmd5;
 217                 $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
 218                 &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 219         }
 220         print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
 221 }
 222 print <<END
 223 </tr>
 224 </table>
 225 <hr />
 226 <table width='100%'>
 227 <tr>
 228         <td width='55%'>&nbsp;</td>
 229         <td width='40%' align='center'><input type='submit' name='ACTION' value='$Lang::tr{'save'}' /></td>
 230         <td width='5%'>
 231                 &nbsp; <!-- space for future online help link -->
 232         </td>
 233 </tr>
 234 </table>
 235 </form>
 236 END
 237 ;
 238
 239 if ($results ne '') {
 240         print "$results";
 241 }
 242
 243 &Header::closebox();
 244 &Header::closebigbox();
 245 &Header::closepage();
 246
 247 sub getmd5 {
 248         # Retrieve MD5 sum from $url.md5 file
 249         #
 250         my $md5buf = &geturl("$url.md5");
 251         return undef unless $md5buf;
 252
 253         if (0) { # 1 to debug
 254                 my $filename='';
 255                 my $fh='';
 256                 ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.md5' );
 257                 binmode ($fh);
 258                 syswrite ($fh, $md5buf->content);
 259                 close($fh);
 260         }
 261         return $md5buf->content;
 262 }
 263 sub downloadrulesfile {
 264         my $return = &geturl($url);
 265         return undef unless $return;
 266
 267         if (index($return->content, "\037\213") == -1 ) { # \037\213 is .gz beginning
 268                 $errormessage = $Lang::tr{'invalid loaded file'};
 269                 return undef;
 270         }
 271
 272         my $filename='';
 273         my $fh='';
 274         ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
 275         binmode ($fh);
 276         syswrite ($fh, $return->content);
 277         close($fh);
 278         return $filename;
 279 }
 280
 281 sub geturl ($) {
 282         my $url=$_[0];
 283
 284         unless (-e "${General::swroot}/red/active") {
 285                 $errormessage = $Lang::tr{'could not download latest updates'};
 286                 return undef;
 287         }
 288
 289         my $downloader = LWP::UserAgent->new;
 290         $downloader->timeout(5);
 291
 292         my %proxysettings=();
 293         &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 294
 295         if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 296                 my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 297                 if ($proxysettings{'UPSTREAM_USER'}) {
 298                         $downloader->proxy("http","http://$proxysettings{'UPSTREAM_USER'}:$proxysettings{'UPSTREAM_PASSWORD'}@"."$peer:$peerport/");
 299                 } else {
 300                         $downloader->proxy("http","http://$peer:$peerport/");
 301                 }
 302         }
 303
 304         my $return = $downloader->get($url,'Cache-Control','no-cache');
 305
 306         if ($return->code == 403) {
 307                 $errormessage = $Lang::tr{'access refused with this oinkcode'};
 308                 return undef;
 309         } elsif (!$return->is_success()) {
 310                 $errormessage = $Lang::tr{'could not download latest updates'};
 311                 return undef;
 312         }
 313
 314         return $return;
 315
 316 }