####################### Added for snort rules control #################################
my $snortrulepath = "/etc/snort/rules";
-my @snortconfig;
my $restartsnortrequired = 0;
my %snortrules;
my $rule = '';
my $border = '';
my $checkboxname = '';
-# Grab all available snort rules.
-my @rules;
-
+## Grab all available snort rules and store them in the snortrules hash.
+#
# Open snort rules directory and do a directory listing.
opendir(DIR, $snortrulepath) or die $!;
# Loop through the direcory.
# Ignore empty files.
next if (-z "$snortrulepath/$file");
- # Use a regular expression to find files ending in .conf
+ # Use a regular expression to find files ending in .rules
next unless ($file =~ m/\.rules$/);
- # Add the file to rulecategories array.
- push(@rules, $file);
- }
-
-closedir(DIR);
-
-if (-e "/etc/snort/snort.conf") {
-
-
- # Open snort.conf file, read it in, close it, and re-open for writing
- open(FILE, "/etc/snort/snort.conf") or die 'Unable to read snort config file.';
- @snortconfig = <FILE>;
- close(FILE);
- open(FILE, ">/etc/snort/snort.conf") or die 'Unable to write snort config file.';
-
- foreach (@rules) {
- chomp $_;
- my $temp = join(";",@snortconfig);
- if ( $temp =~ /$_/ ){next;}
- else { push(@snortconfig,"#include \$RULE_PATH/".$_);}
- }
-
- # Loop over each line
- foreach my $line (@snortconfig) {
- # Trim the line
- chomp $line;
-
- # Check for a line with .rules
- if ($line =~ /\.rules$/) {
- # Parse out rule file name
- $rule = $line;
- $rule =~ s/\$RULE_PATH\///i;
- $rule =~ s/ ?include ?//i;
- $rule =~ s/\#//i;
- my $snortrulepathrule = "$snortrulepath/$rule";
-
- # Open rule file and read in contents
- open(RULEFILE, "$snortrulepath/$rule") or die "Unable to read snort rule file for reading => $snortrulepath/$rule.";
- my @snortrulefile = <RULEFILE>;
- close(RULEFILE);
- open(RULEFILE, ">$snortrulepath/$rule") or die "Unable to write snort rule file for writing $snortrulepath/$rule";
-
- # Local vars
- my $dashlinecnt = 0;
- my $desclook = 1;
- my $snortruledesc = '';
- my %snortruledef = ();
- my $rulecnt = 1;
-
- # Loop over rule file contents
- foreach my $ruleline (@snortrulefile) {
- chomp $ruleline;
-
- # If still looking for a description
- if ($desclook) {
- # If line does not start with a # anymore, then done looking for a description
- if ($ruleline !~ /^\#/) {
- $desclook = 0;
- }
-
- # If see more than one dashed line, (start to) create rule file description
- if ($dashlinecnt > 1) {
- # Check for a line starting with a #
- if ($ruleline =~ /^\#/ and $ruleline !~ /^\#alert/) {
- # Create tempruleline
- my $tempruleline = $ruleline;
-
- # Strip off # and clean up line
- $tempruleline =~ s/\# ?//i;
-
- # Check for part of a description
- if ($snortruledesc eq '') {
- $snortruledesc = $tempruleline;
- } else {
- $snortruledesc .= " $tempruleline";
- }
- } else {
- # Must be done
- $desclook = 0;
- }
- }
-
- # If have a dashed line, increment count
- if ($ruleline =~ /\# ?\-+/) {
- $dashlinecnt++;
- }
- } else {
- # Parse out rule file rule's message for display
- if ($ruleline =~ /(msg\:\"[^\"]+\";)/) {
- my $msg = '';
- $msg = $1;
- $msg =~ s/msg\:\"//i;
- $msg =~ s/\";//i;
- $snortruledef{$rulecnt}{'Description'} = $msg;
-
- # Check for 'Save' and rule file displayed in query string
- if (($snortsettings{'ACTION'} eq $Lang::tr{'update'}) && ($ENV{'QUERY_STRING'} =~ /$rule/i)) {
- # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
- if ((($ruleline =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"})) || (($ruleline !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}))) {
- $restartsnortrequired = 1;
- }
-
- # Strip out leading # from rule line
- $ruleline =~ s/\# ?//i;
-
- # Check if it does not exists (which means it is disabled), append a #
- if (!exists $snortsettings{"SNORT_RULE_$rule\_$rulecnt"}) {
- $ruleline = "#"." $ruleline";
- }
- }
-
- # Check if ruleline does not begin with a #, so it is enabled
- if ($ruleline !~ /^\#/) {
- $snortruledef{$rulecnt++}{'State'} = 'Enabled';
- } else {
- # Otherwise it is disabled
- $snortruledef{$rulecnt++}{'State'} = 'Disabled';
- }
- }
- }
-
- # Print ruleline to RULEFILE
- print RULEFILE "$ruleline\n";
- }
-
- # Close RULEFILE
- close(RULEFILE);
-
- # Check for 'Save'
- if ($snortsettings{'ACTION'} eq $Lang::tr{'update'}) {
- # Check for a disable rule which is now enabled, or an enabled rule which is now disabled
- if ((($line =~ /^\#/) && (exists $snortsettings{"SNORT_RULE_$rule"})) || (($line !~ /^\#/) && (!exists $snortsettings{"SNORT_RULE_$rule"}))) {
- $restartsnortrequired = 1;
- }
-
- # Strip out leading # from rule line
- $line =~ s/\# ?//i;
+ # Ignore files which are not read-able.
+ next unless (-R "$snortrulepath/$file");
- # Check if it does not exists (which means it is disabled), append a #
- if (!exists $snortsettings{"SNORT_RULE_$rule"}) {
- $line = "# $line";
- }
-
- }
-
- # Check for rule state
- if ($line =~ /^\#/) {
- $snortrules{$rule}{"State"} = "Disabled";
- } else {
- $snortrules{$rule}{"State"} = "Enabled";
- }
-
- # Set rule description
- $snortrules{$rule}{"Description"} = $snortruledesc;
-
- # Loop over sorted rules
- foreach my $ruledef (sort {$a <=> $b} keys(%snortruledef)) {
- $snortrules{$rule}{"Definition"}{$ruledef}{'Description'} = $snortruledef{$ruledef}{'Description'};
- $snortrules{$rule}{"Definition"}{$ruledef}{'State'} = $snortruledef{$ruledef}{'State'};
- }
-
- $snortruledesc = '';
- print FILE "$line\n";
- } elsif ($line =~ /var RULE_PATH/) {
- ($tmp, $tmp, $snortrulepath) = split(' ', $line);
- print FILE "$line\n";
- } else {
- print FILE "$line\n";
- }
+ # Call subfunction to read-in rulefile and add rules to
+ # the snortrules hash.
+ &readrulesfile("$file");
}
- close(FILE);
- if ($restartsnortrequired) {
- system('/usr/local/bin/snortctrl restart >/dev/null');
- }
-}
+closedir(DIR);
####################### End added for snort rules control #################################
system("wget -r -o /var/tmp/log --output-document=/var/tmp/snortrules.tar.gz $url");
}
}
+
+sub readrulesfile ($) {
+ my $rulefile = shift;
+
+ # Open rule file and read in contents
+ open(RULEFILE, "$snortrulepath/$rulefile") or die "Unable to read $rulefile!";
+
+ # Store file content in an array.
+ my @lines = <RULEFILE>;
+
+ # Close file.
+ close(RULEFILE);
+
+ # Loop over rule file contents
+ foreach my $line (@lines) {
+ # Remove whitespaces.
+ chomp $line;
+
+ # Skip blank lines.
+ next if ($line =~ /^\s*$/);
+
+ # Local vars.
+ my $sid;
+ my $msg;
+
+ # Gather rule sid and message from the ruleline.
+ if ($line =~ m/.*msg:\"(.*?)\"\; .* sid:(.*?); /) {
+ $msg = $1;
+ $sid = $2;
+
+ # Check if a rule has been found.
+ if ($sid && $msg) {
+ # Add rule to the snortrules hash.
+ $snortrules{$rulefile}{$sid}{'Description'} = $msg;
+
+ # Grab status of the rule. Check if ruleline starts with a "dash".
+ if ($line =~ /^\#/) {
+ # If yes, the rule is disabled.
+ $snortrules{$rulefile}{$sid}{'State'} = "Disabled";
+ } else {
+ # Otherwise the rule is enabled.
+ $snortrules{$rulefile}{$sid}{'State'} = "Enabled";
+ }
+ }
+ }
+ }
+}
projects / ipfire-2.x.git / commitdiff
