/**
* Create, store, and return a token for long-term authentication
*
* @param int $userId
* @return string (to store in a cookie, for example)
*/
public function createAuthToken(int $userId) : string
{
$f = $this->tableConfig['fields']['longterm'];
$selector = \random_bytes(self::SELECTOR_BYTES);
$validator = \random_bytes(self::VALIDATOR_BYTES);
$this->db->insert($this->tableConfig['table']['longterm'], [$f['userid'] => $userId, $f['selector'] => Base64::encode($selector), $f['validator'] => CryptoUtil::hash($validator)]);
return Base64::encode($selector . $validator);
}
/**
* Renders ReStructuredText
*
* @param string $string
* @param bool $return
* @output HTML
* @return string
*/
function render_rst(string $string = '', bool $return = false) : string
{
static $rst = null;
if (empty($rst)) {
$rst = (new RSTParser())->setIncludePolicy(false);
}
$checksum = CryptoUtil::hash('ReStructuredText' . $string);
$h1 = Binary::safeSubstr($checksum, 0, 2);
$h2 = Binary::safeSubstr($checksum, 2, 2);
$hash = Binary::safeSubstr($checksum, 4);
$cacheDir = \implode('/', [ROOT, 'tmp', 'cache', 'rst', $h1, $h2]);
if (\file_exists($cacheDir . '/' . $hash . '.txt')) {
$output = \file_get_contents($cacheDir . '/' . $hash . '.txt');
} else {
if (!\is_dir($cacheDir)) {
\mkdir($cacheDir, 0775, true);
}
$output = (string) $rst->parse($string);
// Cache for later
\file_put_contents($cacheDir . '/' . $hash . '.txt', $output);
\chmod($cacheDir . '/' . $hash . '.txt', 0664);
}
if ($return) {
return $output;
}
echo $output;
return '';
}
