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✏️ Editing: lsperld.fpl Read Only

#!/usr/bin/perl

use FCGI;
#use strict;

our %Cache;
use Symbol qw(delete_package);

*CORE::GLOBAL::exit = \&my_exit;

sub my_exit {
#	warn "exit() was called";
}

sub valid_package_name {
	my($string) = @_;
	$string =~ s/([^A-Za-z0-9\/])/sprintf('_%2x',unpack('C',$1))/eg;
	# second pass only for words starting with a digit
	$string =~ s|/(\d)|sprintf('/_%2x',unpack('C',$1))|eg;

# Dress it up as a real package name
	$string =~ s|/|::|g;
	return 'LSPerld' . $string;
}

sub execute_file {
	my($__filename, $__delete) = @_;
	my $__package;
	my $__mtime;
	my $__path;
	my $__name;
	return 404 if ( ! -r $__filename || -z _ );
	$__mtime = -M _;
	if(defined $Cache{$__filename}[3]
	   &&
	   $Cache{$__filename}[3] <= $__mtime)
	{
        # we have compiled this subroutine already,
        # it has not been updated on disk, nothing left to do
        #print STDERR "already compiled $package->handler\n";
		$__path = $Cache{$__filename}[0];
		$__name = $Cache{$__filename}[1];
		$__package = $Cache{$__filename}[2];
		chdir( $__path );
	}
	else {
		$__filename =~ /^(\/.*?)\/*([^\/]+)$/;
		$__path  = $1;
		$__name  = $2;
		chdir( $__path );

local *FH;
        open FH, $__filename or die "open '$__filename' $!";
        local($/) = undef;
        my $__sub = <FH>;
        close FH;

$__package = valid_package_name($__filename);
        #wrap the code into a subroutine inside our unique package
        my $__eval = qq{package $__package; use subs qw(exit); sub exit { } sub handler { local \$0='$__filename'; $__sub; }};
        {
            # hide our variables within this block
            my($__filename,$__mtime,$__package,$__sub);
            eval $__eval;
        }
		if ( $@ )
		{
			warn $@;
			return 500;
				
		}

#cache it unless we're cleaning out each time
        if ( ! $__delete )
		{
			#$Cache{$filename}{pkgname} = $package;
			#$Cache{$filename}{mtime} = $mtime;
			$Cache{$__filename} = [ $__path, $__name, $__package, $__mtime ];
		}
	}

$0=$__filename;
	@ARGV = ( $__name );
	my $__QS = $ENV{'QUERY_STRING'};
	if (( $__QS ne '')&&(index( $__QS, '=' ) == -1 ))
	{
		push( @ARGV, split( $__QS ) );
	}
	eval {$__package->handler;};

delete_package($__package) if $__delete;
	return 0;
	#take a look if you want
	#print Devel::Symdump->rnew($package)->as_string, $/;
}

my $req = FCGI::Request();
my $count = 0;
my $ret;
my $max_req = -1;
if ( $ENV{'FCGI_PERL_MAX_REQ'} eq '' )
{
	$max_req = 500;
}
else
{
	$max_req = int($ENV{'FCGI_PERL_MAX_REQ'}); 
}

while($req->Accept() >= 0)
{
	my $filename = $ENV{'SCRIPT_FILENAME'};

# Make it looks like ActiveState's PerlEx, otherwise CGI.pm won't reset
	# request parameters
	$ENV{'GATEWAY_INTERFACE'} = 'CGI-PerlEx/1.1';

if ( $filename ne '' )
	{
		$ret = execute_file( $filename, 0 );
		++$count;
		if ( $ret )
		{
			if ( $ret == 404 )
			{
				print( "Status: 404\r\nContent-type: text/plain\r\n\r\n",
					   "ERROR: file not find: \'$filename\'!\n" );
			}
			elsif ( $ret == 500 )
			{
				print( "Status: 500\r\nContent-type: text/plain\r\n\r\n",
					   "ERROR: \'$filename\' is not a valid Perl script!\n" );
			}
		}
	}
	else
	{
		print( "Content-type: text/plain\r\n\r\n",
			   "ERROR: missing environment variable \'SCRIPT_FILENAME\'!\n" );
	}
	
    $req->Finish();
	last if ( ( $max_req != 0 )&&( $count >= $max_req ) );
}

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