74 lines
2.3 KiB
PHP
74 lines
2.3 KiB
PHP
<?php
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/**
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* Copyright 2010-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License").
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* You may not use this file except in compliance with the License.
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* A copy of the License is located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed
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* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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namespace Aws\S3;
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use Aws\Common\Signature\SignatureV4;
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use Aws\Common\Signature\SignatureInterface;
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use Guzzle\Common\Event;
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use Guzzle\Service\Command\CommandInterface;
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use Symfony\Component\EventDispatcher\EventSubscriberInterface;
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/**
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* Adds required and optional Content-MD5 headers
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*/
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class S3Md5Listener implements EventSubscriberInterface
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{
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/** @var S3SignatureInterface */
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private $signature;
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public static function getSubscribedEvents()
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{
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return array('command.after_prepare' => 'onCommandAfterPrepare');
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}
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public function __construct(SignatureInterface $signature)
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{
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$this->signature = $signature;
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}
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public function onCommandAfterPrepare(Event $event)
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{
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$command = $event['command'];
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$operation = $command->getOperation();
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if ($operation->getData('contentMd5')) {
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// Add the MD5 if it is required for all signers
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$this->addMd5($command);
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} elseif ($operation->hasParam('ContentMD5')) {
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$value = $command['ContentMD5'];
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// Add a computed MD5 if the parameter is set to true or if
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// not using Signature V4 and the value is not set (null).
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if ($value === true ||
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($value === null && !($this->signature instanceof SignatureV4))
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) {
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$this->addMd5($command);
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}
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}
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}
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private function addMd5(CommandInterface $command)
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{
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$request = $command->getRequest();
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$body = $request->getBody();
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if ($body && $body->getSize() > 0) {
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if (false !== ($md5 = $body->getContentMd5(true, true))) {
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$request->setHeader('Content-MD5', $md5);
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}
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}
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}
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}
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