* @version $Id$
*/
/**
* @category Admin
* @package admin
*/
class MoodleQuickForm_recaptcha extends HTML_QuickForm_input {
/**
* html for help button, if empty then no help
*
* @var string
*/
var $_helpbutton='';
var $_https=false;
/**
*
* $form->addElement('textarea_counter', 'message', 'Message',
* array('cols'=>60, 'rows'=>10), 160);
*
*/
function MoodleQuickForm_recaptcha($elementName = null, $elementLabel = null, $attributes = null) {
parent::HTML_QuickForm_input($elementName, $elementLabel, $attributes);
$this->_type = 'recaptcha';
if (!empty($attributes['https'])) {
$this->_https = $attributes['https'];
}
}
/**
* Returns the recaptcha element in HTML
*
* @since 1.0
* @access public
* @return string
*/
function toHtml() {
global $CFG;
require_once $CFG->libdir . '/recaptchalib.php';
//Accessibility: don't specify a tabindex MDL-20144
$html = '' . "\n";
$attributes = $this->getAttributes();
if (empty($attributes['error_message'])) {
$attributes['error_message'] = null;
$this->setAttributes($attributes);
}
$error = $attributes['error_message'];
unset($attributes['error_message']);
$strincorrectpleasetryagain = get_string('incorrectpleasetryagain', 'auth');
$strenterthewordsabove = get_string('enterthewordsabove', 'auth');
$strenterthenumbersyouhear = get_string('enterthenumbersyouhear', 'auth');
$strgetanothercaptcha = get_string('getanothercaptcha', 'auth');
$strgetanaudiocaptcha = get_string('getanaudiocaptcha', 'auth');
$strgetanimagecaptcha = get_string('getanimagecaptcha', 'auth');
$html .= '
';
return $html . recaptcha_get_html($CFG->recaptchapublickey, $error, $this->_https);
}
/**
* set html for help button
*
* @access public
* @param array $help array of arguments to make a help button
* @param string $function function name to call to get html
*/
function setHelpButton($helpbuttonargs, $function='helpbutton'){
if (!is_array($helpbuttonargs)){
$helpbuttonargs=array($helpbuttonargs);
}else{
$helpbuttonargs=$helpbuttonargs;
}
//we do this to to return html instead of printing it
//without having to specify it in every call to make a button.
if ('helpbutton' == $function){
$defaultargs=array('', '', 'moodle', true, false, '', true);
$helpbuttonargs=$helpbuttonargs + $defaultargs ;
}
$this->_helpbutton=call_user_func_array($function, $helpbuttonargs);
}
/**
* get html for help button
*
* @access public
* @return string html for help button
*/
function getHelpButton(){
return $this->_helpbutton;
}
function verify($challenge_field, $response_field) {
global $CFG;
require_once $CFG->libdir . '/recaptchalib.php';
$response = recaptcha_check_answer($CFG->recaptchaprivatekey,
getremoteaddr(),
$challenge_field,
$response_field,
$this->_https);
if (!$response->is_valid) {
$attributes = $this->getAttributes();
$attributes['error_message'] = $response->error;
$this->setAttributes($attributes);
return $response->error;
}
return true;
}
}
?>