]> git.ipfire.org Git - people/pmueller/ipfire-2.x.git/blobdiff - html/cgi-bin/ids.cgi
Removed snort md5 check, added free space check.
[people/pmueller/ipfire-2.x.git] / html / cgi-bin / ids.cgi
index 111aea66796182b0b7b95d283e8c4ffacf92a162..d9082979dcc94bea2d4f9780fff2345a089992fc 100644 (file)
@@ -26,8 +26,8 @@ use File::Temp qw/ tempfile tempdir /;
 use strict;
 
 # enable only the following on debugging purpose
-#use warnings;
-#use CGI::Carp 'fatalsToBrowser';
+use warnings;
+use CGI::Carp 'fatalsToBrowser';
 
 require '/var/ipfire/general-functions.pl';
 require "${General::swroot}/lang.pl";
@@ -43,8 +43,6 @@ my %checked=();
 my %selected=();
 my %netsettings=();
 our $errormessage = '';
-our $md5 = '0';# not '' to avoid displaying the wrong message when INSTALLMD5 not set
-our $realmd5 = '';
 our $results = '';
 our $tempdir = '';
 our $url='';
@@ -56,7 +54,6 @@ $snortsettings{'ENABLE_SNORT'} = 'off';
 $snortsettings{'ENABLE_SNORT_GREEN'} = 'off';
 $snortsettings{'ENABLE_SNORT_BLUE'} = 'off';
 $snortsettings{'ENABLE_SNORT_ORANGE'} = 'off';
-$snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} = 'off';
 $snortsettings{'ENABLE_GUARDIAN'} = 'off';
 $snortsettings{'GUARDIAN_INTERFACE'} = `cat /var/ipfire/red/iface`;
 $snortsettings{'GUARDIAN_HOSTGATEWAYBYTE'} = '1';
@@ -65,13 +62,11 @@ $snortsettings{'GUARDIAN_ALERTFILE'} = '/var/log/snort/alert';
 $snortsettings{'GUARDIAN_IGNOREFILE'} = '/var/ipfire/guardian/guardian.ignore';
 $snortsettings{'GUARDIAN_TARGETFILE'} = '/var/ipfire/guardian/guardian.target';
 $snortsettings{'GUARDIAN_TIMELIMIT'} = '86400';
-$snortsettings{'GUARDIAN_IGNOREFILE_CONTENT'} = `cat $snortsettings{'GUARDIAN_IGNOREFILE'}`;
 $snortsettings{'ACTION'} = '';
 $snortsettings{'ACTION2'} = '';
 $snortsettings{'RULES'} = '';
 $snortsettings{'OINKCODE'} = '';
 $snortsettings{'INSTALLDATE'} = '';
-$snortsettings{'INSTALLMD5'} = '';
 
 &Header::getcgihash(\%snortsettings, {'wantfile' => 1, 'filevar' => 'FH'});
 
@@ -106,23 +101,12 @@ if (-e "/etc/snort/snort.conf") {
     if ( $temp =~ /$_/ ){next;}
     else { push(@snortconfig,"#include \$RULE_PATH/".$_);}
        }
-       
+
        # Loop over each line
        foreach my $line (@snortconfig) {
                # Trim the line
                chomp $line;
 
-               if ($snortsettings{'ACTION'} eq $Lang::tr{'save'}) {
-                       # Check for preprocessor settings
-                       if ($line =~ /preprocessor http_inspect/) {
-                               # Strip out leading # from rule line
-                               $line =~ s/\# ?//i;
-                               if (($snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'} eq 'off')) {
-                                       $line = "# $line";
-                               }
-                       }
-               }
-
                # Check for a line with .rules
                if ($line =~ /\.rules$/) {
                        # Parse out rule file name
@@ -238,7 +222,7 @@ if (-e "/etc/snort/snort.conf") {
                                if (!exists $snortsettings{"SNORT_RULE_$rule"}) {
                                        $line = "# $line";
                                }
-                               
+
                        }
 
                        # Check for rule state
@@ -276,9 +260,13 @@ if (-e "/etc/snort/snort.conf") {
 #######################  End added for snort rules control  #################################
 
 if ($snortsettings{'RULES'} eq 'subscripted') {
-       $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.6_s.tar.gz";
+       #$url="http://dl.snort.org/sub-rules/snortrules-snapshot-2.8_s.tar.gz?oink_code=$snortsettings{'OINKCODE'}";
+       $url="http://dl.snort.org/sub-rules/snortrules-snapshot-2853_s.tar.gz?oink_code=$snortsettings{'OINKCODE'}";
+       #$url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.8_s.tar.gz";
 } elsif ($snortsettings{'RULES'} eq 'registered') {
-       $url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.6.tar.gz";
+       $url="http://dl.snort.org/reg-rules/snortrules-snapshot-2.8.tar.gz?oink_code=$snortsettings{'OINKCODE'}";
+       #$url="http://dl.snort.org/reg-rules/snortrules-snapshot-2853.tar.gz?oink_code=$snortsettings{'OINKCODE'}";
+       #$url="http://www.snort.org/pub-bin/oinkmaster.cgi/$snortsettings{'OINKCODE'}/snortrules-snapshot-2.8.tar.gz";
 } else {
        $url="http://www.snort.org/pub-bin/downloads.cgi/Download/comm_rules/Community-Rules-CURRENT.tar.gz";
 }
@@ -295,19 +283,19 @@ if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} e
                system ('/usr/bin/touch', "${General::swroot}/snort/enable");
        } else {
                unlink "${General::swroot}/snort/enable";
-       } 
+       }
        if ($snortsettings{'ENABLE_SNORT_GREEN'} eq 'on')
        {
                system ('/usr/bin/touch', "${General::swroot}/snort/enable_green");
        } else {
                unlink "${General::swroot}/snort/enable_green";
-       } 
+       }
        if ($snortsettings{'ENABLE_SNORT_BLUE'} eq 'on')
        {
                system ('/usr/bin/touch', "${General::swroot}/snort/enable_blue");
        } else {
                unlink "${General::swroot}/snort/enable_blue";
-       } 
+       }
        if ($snortsettings{'ENABLE_SNORT_ORANGE'} eq 'on')
        {
                system ('/usr/bin/touch', "${General::swroot}/snort/enable_orange");
@@ -319,7 +307,7 @@ if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} e
                system ('/usr/bin/touch', "${General::swroot}/snort/enable_preprocessor_http_inspect");
        } else {
                unlink "${General::swroot}/snort/enable_preprocessor_http_inspect";
-       }               
+       }
        if ($snortsettings{'ENABLE_GUARDIAN'} eq 'on')
        {
                system ('/usr/bin/touch', "${General::swroot}/guardian/enable");
@@ -331,7 +319,7 @@ if ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} e
 
 } elsif ($snortsettings{'ACTION'} eq $Lang::tr{'save'} && $snortsettings{'ACTION2'} eq "guardian" ){
                        open(IGNOREFILE, ">$snortsettings{'GUARDIAN_IGNOREFILE'}") or die "Unable to write guardian ignore file $snortsettings{'GUARDIAN_IGNOREFILE'}";
-                               print IGNOREFILE $snortsettings{'GUARDIAN_IGNOREFILE_CONTENT'};
+                               print IGNOREFILE $snortsettings{'IGNOREFILE_CONTENT'};
                        close(IGNOREFILE);
                        open(GUARDIAN, ">/var/ipfire/guardian/guardian.conf") or die "Unable to write guardian conf /var/ipfire/guardian/guardian.conf";
                                print GUARDIAN <<END
@@ -351,25 +339,30 @@ END
        &General::readhash("${General::swroot}/snort/settings", \%snortsettings);
 
 if ($snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'}) {
-       $md5 = &getmd5;
-       if (($snortsettings{'INSTALLMD5'} ne $md5) && defined $md5 ) {
-               chomp($md5);
-               my $filename = &downloadrulesfile();
-               if (defined $filename) {
-                       # Check MD5sum
-                       $realmd5 = `/usr/bin/md5sum $filename`;
-                       chomp ($realmd5);
-                       $realmd5 =~ s/^(\w+)\s.*$/$1/;
-                       if ($md5 ne $realmd5) {
-                               $errormessage = "$Lang::tr{'invalid md5sum'}";
+
+       my @df = `/bin/df -B M /var`;
+       foreach my $line (@df) {
+               next if $line =~ m/^Filesystem/;
+
+               if ($line =~ m/dev/ ) {
+               $line =~ m/^.* (\d+)M.*$/;
+               my @temp = split(/ +/,$line);
+                       if ($1<600) {
+                               $errormessage = "$Lang::tr{'not enough disk space'} < 600MB, /var $1MB";
                        } else {
-                               $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
-                               $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules 2>&1`;
-                               $results .= "</pre>";
+                               my $filename = &downloadrulesfile();
+                               if (defined $filename) {
+                                               $results = "<b>$Lang::tr{'installed updates'}</b>\n<pre>";
+                                               $results .=`/usr/local/bin/oinkmaster.pl -s -u file://$filename -C /var/ipfire/snort/oinkmaster.conf -o /etc/snort/rules 2>&1`;
+                                               $results .= "</pre>";
+                                       }
+                                       unlink ($filename);
                        }
-                       unlink ($filename);
+                       
                }
        }
+
+
 }
 
 $checked{'ENABLE_SNORT'}{'off'} = '';
@@ -384,9 +377,6 @@ $checked{'ENABLE_SNORT_BLUE'}{$snortsettings{'ENABLE_SNORT_BLUE'}} = "checked='c
 $checked{'ENABLE_SNORT_ORANGE'}{'off'} = '';
 $checked{'ENABLE_SNORT_ORANGE'}{'on'} = '';
 $checked{'ENABLE_SNORT_ORANGE'}{$snortsettings{'ENABLE_SNORT_ORANGE'}} = "checked='checked'";
-$checked{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}{'off'} = '';
-$checked{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}{'on'} = '';
-$checked{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}{$snortsettings{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}} = "checked='checked'";
 $checked{'ENABLE_GUARDIAN'}{'off'} = '';
 $checked{'ENABLE_GUARDIAN'}{'on'} = '';
 $checked{'ENABLE_GUARDIAN'}{$snortsettings{'ENABLE_GUARDIAN'}} = "checked='checked'";
@@ -401,7 +391,7 @@ $selected{'RULES'}{$snortsettings{'RULES'}} = "selected='selected'";
 ####################### Added for snort rules control #################################
 print "<SCRIPT LANGUAGE='JavaScript' SRC='/include/snortupdateutility.js'></SCRIPT>";
 print <<END
-<STYLE TYPE="text/css">   
+<STYLE TYPE="text/css">
 <!--
 .section {
        border: groove;
@@ -455,14 +445,6 @@ print <<END
 <tr>
        <td><hr /></td>
 </tr>
-<tr>
-       <td><b>$Lang::tr{'ids preprocessor'}</b></td>
-</tr>
-<tr>
-       <td><input type='checkbox' name='ENABLE_PREPROCESSOR_HTTP_INSPECT' $checked{'ENABLE_PREPROCESSOR_HTTP_INSPECT'}{'on'} />  http_inspect $Lang::tr{'active'}
-<tr>
-       <td><hr /></td>
-</tr>
 <tr>
        <td><b>$Lang::tr{'ids rules update'}</b></td>
 </tr>
@@ -477,9 +459,8 @@ print <<END
 </tr>
 <tr>
        <td><br />
-               $Lang::tr{'ids rules license'} <a href='http://www.snort.org/' target='_blank'>http://www.snort.org</a>.<br />
-               <br />
-               $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 />
+               $Lang::tr{'ids rules license'} <a href='https://www.snort.org/signup' target='_blank'>www.snort.org</a>$Lang::tr{'ids rules license1'}<br /><br />
+               $Lang::tr{'ids rules license2'} <a href='https://www.snort.org/account/oinkcode' target='_blank'>Get an Oinkcode</a>, $Lang::tr{'ids rules license3'}
        </td>
 </tr>
 <tr>
@@ -490,16 +471,12 @@ print <<END
 END
 ;
 
-if ($snortsettings{'INSTALLMD5'} eq $md5) {
-       print "&nbsp;$Lang::tr{'rules already up to date'}</td>";
-} else {
-       if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} && $md5 eq $realmd5 ) {
-               $snortsettings{'INSTALLMD5'} = $realmd5;
-               $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
-               &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
-       }
-       print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
+if ( $snortsettings{'ACTION'} eq $Lang::tr{'download new ruleset'} ) {
+       $snortsettings{'INSTALLDATE'} = `/bin/date +'%Y-%m-%d'`;
+       &General::writehash("${General::swroot}/snort/settings", \%snortsettings);
 }
+print "&nbsp;$Lang::tr{'updates installed'}: $snortsettings{'INSTALLDATE'}</td>";
+
 print <<END
 </tr>
 </table>
@@ -550,7 +527,7 @@ if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable
        &Header::openbox('100%', 'LEFT', $Lang::tr{'intrusion detection system rules'});
                # Output display table for rule files
                print "<TABLE width='100%'><TR><TD VALIGN='TOP'><TABLE>";
-               
+
                print "<form method='post'>";
 
                # Local vars
@@ -662,7 +639,7 @@ if ( -e "${General::swroot}/snort/enable" || -e "${General::swroot}/snort/enable
                                        # Increment count
                                        $ruledefdisplaycnt++;
                                }
-       
+
                                # If do not have second rule for row, create empty cell
                                if (($ruledefdisplaycnt % 2) != 0) {
                                        print "<TD CLASS='base'></TD>";
@@ -699,22 +676,6 @@ END
 &Header::closebigbox();
 &Header::closepage();
 
-sub getmd5 {
-       # Retrieve MD5 sum from $url.md5 file
-       #
-       my $md5buf = &geturl("$url.md5");
-       return undef unless $md5buf;
-
-       if (0) { # 1 to debug
-               my $filename='';
-               my $fh='';
-               ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.md5' );
-               binmode ($fh);
-               syswrite ($fh, $md5buf->content);
-               close($fh);
-       }
-       return $md5buf->content;
-}
 sub downloadrulesfile {
        my $return = &geturl($url);
        return undef unless $return;
@@ -726,7 +687,7 @@ sub downloadrulesfile {
 
        my $filename='';
        my $fh='';
-       ($fh, $filename) = tempfile('/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
+       ($fh, $filename) = tempfile('/var/tmp/XXXXXXXX',SUFFIX => '.tar.gz' );#oinkmaster work only with this extension
        binmode ($fh);
        syswrite ($fh, $return->content);
        close($fh);