/**
* Check if a file requires encryption
* @param string $path
* @return bool
*
* Tests if server side encryption is enabled, and file is allowed by blacklists
*/
private static function shouldEncrypt($path)
{
$userId = Helper::getUser($path);
if (\OCP\App::isEnabled('files_encryption') === false || Crypt::mode() !== 'server' || strpos($path, '/' . $userId . '/files') !== 0) {
return false;
}
if (is_null(self::$blackList)) {
self::$blackList = explode(',', \OCP\Config::getAppValue('files_encryption', 'type_blacklist', ''));
}
if (Crypt::isCatfileContent($path)) {
return true;
}
$extension = substr($path, strrpos($path, '.') + 1);
if (array_search($extension, self::$blackList) === false) {
return true;
}
return false;
}
/**
* Check if a file requires encryption
* @param string $path
* @return bool
*
* Tests if server side encryption is enabled, and file is allowed by blacklists
*/
private static function shouldEncrypt($path)
{
if (is_null(self::$enableEncryption)) {
if (\OCP\Config::getAppValue('files_encryption', 'enable_encryption', 'true') === 'true' && Crypt::mode() === 'server') {
self::$enableEncryption = true;
} else {
self::$enableEncryption = false;
}
}
if (!self::$enableEncryption) {
return false;
}
if (is_null(self::$blackList)) {
self::$blackList = explode(',', \OCP\Config::getAppValue('files_encryption', 'type_blacklist', ''));
}
if (Crypt::isCatfileContent($path)) {
return true;
}
$extension = substr($path, strrpos($path, '.') + 1);
if (array_search($extension, self::$blackList) === false) {
return true;
}
return false;
}
/**
* remember initial fopen mode because sometimes it gets changed during the request
* @param string $path path
* @param string $mode type of access
*/
public function preFopen($path, $mode)
{
self::$fopenMode[$path] = $mode;
self::$enableEncryption = $this->shouldEncrypt($path, $mode);
}