/**
* Encode data into a single string
*
* @param string $data
* @return string
*/
public function encode($plain_text, $key = null)
{
$cipher = $this->getCipher();
if ($cipher == false) {
return false;
}
if ($key == null) {
$sdk = GiveItSdk::getInstance();
$key = $sdk->data_key;
}
if ($key == null) {
$this->addError('missing key for encryption');
return false;
}
$iv = mcrypt_create_iv(mcrypt_get_iv_size($cipher, MCRYPT_MODE_CBC), MCRYPT_RAND);
$td = mcrypt_module_open($cipher, '', MCRYPT_MODE_CBC, '');
mcrypt_generic_init($td, $key, $iv);
$text = $this->pkcs5Pad($plain_text, mcrypt_enc_get_block_size($td));
// manually pad the data since mcrypt doesn't do this properly
$encrypted = mcrypt_generic($td, $text);
$crypt = base64_encode($iv . $encrypted);
$crypt = urlencode($crypt);
if ($this->debug) {
echo "\n---- cipher ---\n" . $this->cipher;
echo "\n---- text ----\n" . $text;
echo "\n---- crypt ----\n" . $crypt;
echo "\n---------------\n";
}
return $crypt;
}
public function __construct()
{
$this->sdk = GiveItSdk::getInstance();
$this->cookie_cache = fopen('php://memory', 'w+');
$this->setupCurl();
}
/**
* Generate Button HTML
*
* This function generates the necessary HTML to render the button.
*
*/
public function getButtonHTML($button_type = 'blue_rect_sm')
{
if (!$this->validate()) {
$this->addError('product data is invalid');
return $this->getErrorsHTML();
}
$parent = GiveItSdk::getInstance();
$crypt = GiveItSdkCrypt::getInstance();
if ($parent == false) {
$this->addError('SDK must be instantiated to render buttons');
return false;
}
$encrypted = $crypt->encode(Tools::jsonEncode($this->data), $parent->data_key);
if ($encrypted == false) {
if (!$this->render_errors) {
return false;
}
$this->addError($crypt->errors());
return $this->getErrorsHTML();
}
// $encrypted = urlencode($encrypted);
$html = "<span class='giveit-button' data-giveit-buttontype='{$button_type}' data-giveit-data='{$encrypted}'></span>";
return $html;
}
/**
* Register the singleton
*
* @return boolean
*/
protected function registerInstance()
{
self::$instance = $this;
return true;
}
public function __construct()
{
$this->parent = GiveItSdk::getInstance();
$this->crypt = GiveItSdkCrypt::getInstance();
}