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<?php
// We only include the recaptchalib.php file when we use it because we don't
// want it polluting the global namespace thing.
class ReCaptcha extends Plugin {
protected $config = array('public_key'=>'',
'private_key'=>'');
public static function description() {
return 'Add a reCaptcha to keep out spam users.';
}
public static function configList() {
return array('public_key'=>'text',
'private_key'=>'text');
}
public function init() {}
private $resp = null;
private function getResp() {
if ($this->resp===null) {
require_once('recaptchalib.php');
@$response = $_POST['recaptcha_response_field'];
@$challenge = $_POST['recaptcha_challenge_field'];
$this->resp = recaptcha_check_answer($this->config['private_key'],
$_SERVER['REMOTE_ADDR'],
$challenge,
$response);
}
return $this->resp;
}
private function getError() {
if ($_POST["recaptcha_response_field"] && !$this->antispam_verify()) {
return $this->getResp()->error;
} else {
return false;
}
}
public function antispam_verify() {
return $this->getResp()->is_valid;
}
public function antispam_html() {
require_once('recaptchalib.php');
return recaptcha_get_html($this->config['public_key'], $this->getError());
}
}
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