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<?php
namespace Guzzle\Plugin\Md5;
use Guzzle\Common\Event;
use Guzzle\Http\Message\EntityEnclosingRequestInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
/**
* Listener used to add a ContentMD5 header to the body of a command and adds ContentMD5 validation if the
* ValidateMD5 option is not set to false on a command
*/
class CommandContentMd5Plugin implements EventSubscriberInterface
{
/** @var string Parameter used to check if the ContentMD5 value is being added */
protected $contentMd5Param;
/** @var string Parameter used to check if validation should occur on the response */
protected $validateMd5Param;
/**
* @param string $contentMd5Param Parameter used to check if the ContentMD5 value is being added
* @param string $validateMd5Param Parameter used to check if validation should occur on the response
*/
public function __construct($contentMd5Param = 'ContentMD5', $validateMd5Param = 'ValidateMD5')
{
$this->contentMd5Param = $contentMd5Param;
$this->validateMd5Param = $validateMd5Param;
}
public static function getSubscribedEvents()
{
return array('command.before_send' => array('onCommandBeforeSend', -255));
}
public function onCommandBeforeSend(Event $event)
{
$command = $event['command'];
$request = $command->getRequest();
// Only add an MD5 is there is a MD5 option on the operation and it has a payload
if ($request instanceof EntityEnclosingRequestInterface && $request->getBody()
&& $command->getOperation()->hasParam($this->contentMd5Param)) {
// Check if an MD5 checksum value should be passed along to the request
if ($command[$this->contentMd5Param] === true) {
if (false !== ($md5 = $request->getBody()->getContentMd5(true, true))) {
$request->setHeader('Content-MD5', $md5);
}
}
}
// Check if MD5 validation should be used with the response
if ($command[$this->validateMd5Param] === true) {
$request->addSubscriber(new Md5ValidatorPlugin(true, false));
}
}
}