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<?php

define('HASHCASH_FORM_ACTION', 'wp-comments-post.php');
define('HASHCASH_SECRET_FILE', realpath(dirname(__FILE__) . '/') . '/wp-hashcash.key');
define('HASHCASH_FORM_ID', 'ACEditor');
define('HASHCASH_FORM_CLASS', 'page');
define('HASHCASH_REFRESH', 60*60*4);
define('HASHCASH_IP_EXPIRE', 60*60*24*7);
define('HASHCASH_VERSION', 3.2);

// Produce random unique strings
function hashcash_random_string($l, $exclude = array()) {
        // Sanity check
        if($l < 1){
                return '';
        }
        
        $str = '';
        while(in_array($str, $exclude) || strlen($str) < $l){
                $str = '';
                while(strlen($str) < $l){
                        $str .= chr(rand(65, 90) + rand(0, 1) * 32);
                }
        }
        
        return $str;
}

// looks up the secret key
function hashcash_field_value(){
        if(function_exists('file_get_contents')){
                return file_get_contents(HASHCASH_SECRET_FILE);
        } else {
                $fp = fopen(HASHCASH_SECRET_FILE, 'r');
                $data = fread($fp, @filesize(HASHCASH_SECRET_FILE));
                fclose($fp);
                return $data;
        }
}

// Returns a phrase representing the product
function hashcash_verbage(){

        $phrase = 'Protection anti-spam active';

        return $phrase;
}

?>