null,
'publicKey' => Configure::read('Recaptcha.publicKey'),
'error' => null,
'ssl' => true,
'error' => false,
'div' => array(
'class' => 'recaptcha'),
'recaptchaOptions' => array(
'theme' => 'red',
'lang' => 'en',
'custom_translations' => array()
)
);
$options = Set::merge($defaults, $options);
extract($options);
if ($ssl) {
$server = $this->secureApiUrl;
} else {
$server = $this->apiUrl;
}
$errorpart = "";
if ($error) {
$errorpart = "&error=" . $error;
}
if (!empty($element)) {
$elementOptions = array();
if (is_array($element)) {
$keys = array_keys($element);
$elementOptions = $element[$keys[0]];
}
return $this->View->element($element, $elementOptions);
}
$jsonOptions = preg_replace('/"callback":"([^"\r\n]*)"/', '"callback":$1', json_encode($recaptchaOptions));
unset($recaptchaOptions);
if (empty($this->params['isAjax'])) {
$configScript = sprintf('var RecaptchaOptions = %s', $jsonOptions);
echo $this->Html->scriptBlock($configScript);
$script = '';
$script .= '';
$script .= '';
if (!empty($error)) {
$script .= $this->Form->error($error);
}
if ($options['div'] != false) {
$script = $this->Html->tag('div', $script, $options['div']);
}
$this->Form->unlockField('recaptcha_challenge_field');
$this->Form->unlockField('recaptcha_response_field');
return $script;
}
$id = uniqid('recaptcha-');
$script = '';
$script .= '';
$script .= '';
return $script;
}
/**
* Recaptcha signup URL
*
* @param string $appName An application name
* @return string A signup url
*/
public function signupUrl($appName = null) {
return "http://recaptcha.net/api/getkey?domain=" . WWW_ROOT . '&app=' . urlencode($appName);
}
/**
* AES Pad
*
* @param string $val A value to pad
* @return string
*/
private function __aesPad($val) {
$blockSize = 16;
$numpad = $blockSize - (strlen($val) % $blockSize);
return str_pad($val, strlen($val) + $numpad, chr($numpad));
}
/**
* AES Encryption
*
* @param string $value A value
* @param string $key A key to use
* @return string
* @throws Exception
*/
private function __aesEncrypt($value, $key) {
if (!function_exists('mcrypt_encrypt')) {
throw new Exception(__d('recaptcha', 'To use reCAPTCHA Mailhide, you need to have the mcrypt php module installed.', true));
}
$mode = MCRYPT_MODE_CBC;
$encryption = MCRYPT_RIJNDAEL_128;
$value = $this->__aesPad($value);
return mcrypt_encrypt($encryption, $key, $value, $mode, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
}
/**
* Mail-hide URL
*
* @param string $x An input string
* @return string A base 64 encrypted string
*/
private function __mailhideUrlbase64($x) {
return strtr(base64_encode($x), '+/', '-_');
}
/**
* Gets the reCAPTCHA Mailhide url for a given email
*
* @param string $email An email address
* @return string
* @throws Exception
*/
public function mailHideUrl($email = null) {
$publicKey = Configure::read('Recaptcha.mailHide.publicKey');
$privateKey = Configure::read('Recaptcha.mailHide.privateKey');
if ($publicKey == '' || $publicKey == null || $privateKey == "" || $privateKey == null) {
throw new Exception(__d('recaptcha', "You need to set a private and public mail hide key. Please visit http://mailhide.recaptcha.net/apikey", true));
}
$key = pack('H*', $privateKey);
$cryptmail = $this->__aesEncrypt($email, $key);
return "http://mailhide.recaptcha.net/d?k=" . $publicKey . "&c=" . $this->__mailhideUrlbase64($cryptmail);
}
/**
* Get a part of the email to show
*
* Given johndoe@example,com return ["john", "example.com"].
* the email is then displayed as john...@example.com
*
* @param string $email an email address
* @return array
*/
private function __hideEmailParts($email) {
$array = preg_split("/@/", $email );
if (strlen($array[0]) <= 4) {
$array[0] = substr($array[0], 0, 1);
} elseif (strlen($array[0]) <= 6) {
$array[0] = substr($array[0], 0, 3);
} else {
$array[0] = substr($array[0], 0, 4);
}
return $array;
}
/**
* Gets html to display an email address given a public an private key to get a key go to:
* http://mailhide.recaptcha.net/apikey
*
* @param string $email An email address
* @return string
*/
public function mailHide($email) {
$emailparts = $this->__hideEmailParts($email);
$url = $this->mailHideUrl($email);
return htmlentities($emailparts[0]) . "...@" . htmlentities($emailparts[1]);
}
}