sub parse_form {

   read(STDIN, $buffer, $ENV{'CONTENT_LENGTH'});
   if (length($buffer) < 5) {
         $buffer = $ENV{QUERY_STRING};
    }
   @pairs = split(/&/, $buffer);
   foreach $pair (@pairs) {
      ($name, $value) = split(/=/, $pair);

      $value =~ tr/+/ /;
      $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C", hex($1))/eg;

      $input{$name} = $value;
   }
}

print "$in{'app_name'}";