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<?php
/**
* @package AkeebaBackup
* @copyright Copyright (c)2006-2017 Nicholas K. Dionysopoulos / Akeeba Ltd
* @license GNU General Public License version 3, or later
*/
namespace Akeeba\Backup\Site\Model\Json;
// Protect from unauthorized access
defined('_JEXEC') or die();
/**
* Interface for Encapsulation data handlers
*/
interface EncapsulationInterface
{
/**
* Is the provided encapsulation type supported by this class?
*
* @param int $encapsulation Encapsulation type
*
* @return bool True if supported
*/
public function isSupported($encapsulation);
/**
* Returns information about the encapsulation supported by this class. The return array has the following keys:
* id: The numeric ID of the encapsulation, e.g. 3
* code: The short code of the encapsulation, e.g. ENCAPSULATION_AESCTR256
* description: A human readable descriptions, e.g. "Data in AES-256 stream (CTR) mode encrypted JSON"
*
* @return array See above
*/
public function getInformation();
/**
* Decodes the data. For encrypted encapsulations this means base64-decoding the data, decrypting it but *NOT* JSON-
* decoding the result. If any error occurs along the way the appropriate exception is thrown.
*
* The data being decoded corresponds to the Request Body described in the API documentation
*
* @param string $serverKey The server key we need to decode data
* @param string $data Encoded data
*
* @return string The decoded data.
*
* @throws \RuntimeException When the server capabilities don't match the requested encapsulation
* @throws \InvalidArgumentException When $data cannot be decoded successfully
*
* @see https://www.akeebabackup.com/documentation/json-api/ar01s02.html
*/
public function decode($serverKey, $data);
/**
* Encodes the data. The data is JSON encoded by this method before encapsulation takes place. Encrypted
* encapsulations will then encrypt the data and base64-encode it before returning it.
*
* The data being encoded correspond to the body > data structure described in the API documentation
*
* @param string $serverKey The server key we need to encode data
* @param mixed $data The data to encode, typically a string, array or object
*
* @return string The encapsulated data
*
* @see https://www.akeebabackup.com/documentation/json-api/ar01s02s02.html
*
* @throws \RuntimeException When the server capabilities don't match the requested encapsulation
* @throws \InvalidArgumentException When $data cannot be converted to JSON
*/
public function encode($serverKey, $data);
/**
* Checks if the request body authorises the user to use the API. Each encapsulation can implement its own
* authorisation method. This method is only called after the request body has been successfully decoded, therefore
* encrypted encapsulations can simply return true.
*
* @param string $serverKey The server key we need to check the authorisation
* @param array $body The decoded body (as returned by the decode() method)
*
* @return bool True if authorised
*/
public function isAuthorised($serverKey, $body);
}
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