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80 lines
2.2 KiB
PHP
80 lines
2.2 KiB
PHP
<?php
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/**
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* Akeeba Engine
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*
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* @package akeebaengine
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* @copyright Copyright (c)2006-2020 Nicholas K. Dionysopoulos / Akeeba Ltd
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* @license GNU General Public License version 3, or later
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*/
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namespace Akeeba\Engine\Postproc\Connector\S3v4;
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// Protection against direct access
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defined('AKEEBAENGINE') or die();
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/**
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* Base class for request signing objects.
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*/
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abstract class Signature
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{
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/**
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* The request we will be signing
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*
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* @var Request
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*/
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protected $request = null;
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/**
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* Signature constructor.
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*
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* @param Request $request The request we will be signing
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*/
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public function __construct(Request $request)
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{
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$this->request = $request;
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}
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/**
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* Get a signature object for the request
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*
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* @param Request $request The request which needs signing
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* @param string $method The signature method, "v2" or "v4"
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*
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* @return Signature
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*/
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public static function getSignatureObject(Request $request, string $method = 'v2'): self
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{
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$className = '\\Akeeba\\Engine\\Postproc\\Connector\\S3v4\\Signature\\' . ucfirst($method);
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return new $className($request);
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}
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/**
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* Returns the authorization header for the request
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*
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* @return string
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*/
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abstract public function getAuthorizationHeader(): string;
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/**
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* Pre-process the request headers before we convert them to cURL-compatible format. Used by signature engines to
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* add custom headers, e.g. x-amz-content-sha256
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*
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* @param array $headers The associative array of headers to process
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* @param array $amzHeaders The associative array of amz-* headers to process
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*
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* @return void
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*/
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abstract public function preProcessHeaders(array &$headers, array &$amzHeaders): void;
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/**
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* Get a pre-signed URL for the request. Typically used to pre-sign GET requests to objects, i.e. give shareable
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* pre-authorized URLs for downloading files from S3.
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*
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* @param integer|null $lifetime Lifetime in seconds. NULL for default lifetime.
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* @param bool $https Use HTTPS ($hostBucket should be false for SSL verification)?
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*
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* @return string The authenticated URL, complete with signature
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*/
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abstract public function getAuthenticatedURL(?int $lifetime = null, bool $https = false): string;
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}
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