Md5ValidatorPlugin.php

<?php
 
namespace Guzzle\Plugin\Md5;
 
use Guzzle\Common\Event;
use Guzzle\Common\Exception\UnexpectedValueException;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 
class Md5ValidatorPlugin implements EventSubscriberInterface
{
    protected $contentLengthCutoff;
 
    protected $contentEncoded;
 
    public function __construct($contentEncoded = true, $contentLengthCutoff = false)
    {
        $this->contentLengthCutoff = $contentLengthCutoff;
        $this->contentEncoded = $contentEncoded;
    }
 
    public static function getSubscribedEvents()
    {
        return array('request.complete' => array('onRequestComplete', 255));
    }
 
    public function onRequestComplete(Event $event)
    {
        $response = $event['response'];
 
        if (!$contentMd5 = $response->getContentMd5()) {
            return;
        }
 
        $contentEncoding = $response->getContentEncoding();
        if ($contentEncoding && !$this->contentEncoded) {
            return false;
        }
 
        // Make sure that the size of the request is under the cutoff size
        if ($this->contentLengthCutoff) {
            $size = $response->getContentLength() ?: $response->getBody()->getSize();
            if (!$size || $size > $this->contentLengthCutoff) {
                return;
            }
        }
 
        if (!$contentEncoding) {
            $hash = $response->getBody()->getContentMd5();
        } elseif ($contentEncoding == 'gzip') {
            $response->getBody()->compress('zlib.deflate');
            $hash = $response->getBody()->getContentMd5();
            $response->getBody()->uncompress();
        } elseif ($contentEncoding == 'compress') {
            $response->getBody()->compress('bzip2.compress');
            $hash = $response->getBody()->getContentMd5();
            $response->getBody()->uncompress();
        } else {
            return;
        }
 
        if ($contentMd5 !== $hash) {
            throw new UnexpectedValueException(
                "The response entity body may have been modified over the wire.  The Content-MD5 "
                . "received ({$contentMd5}) did not match the calculated MD5 hash ({$hash})."
            );
        }
    }
}