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|
<?php
/**
* Slim Framework (https://slimframework.com)
*
* @license https://github.com/slimphp/Slim/blob/3.x/LICENSE.md (MIT License)
*/
namespace Slim\Handlers;
use Psr\Http\Message\ResponseInterface;
use Psr\Http\Message\ServerRequestInterface;
use Slim\Http\Body;
use UnexpectedValueException;
class NotAllowed extends AbstractHandler
{
/**
* @param ServerRequestInterface $request The most recent Request object
* @param ResponseInterface $response The most recent Response object
* @param string[] $methods Allowed HTTP methods
*
* @return ResponseInterface
*
* @throws UnexpectedValueException
*/
public function __invoke(ServerRequestInterface $request, ResponseInterface $response, array $methods)
{
if ($request->getMethod() === 'OPTIONS') {
$status = 200;
$contentType = 'text/plain';
$output = $this->renderPlainOptionsMessage($methods);
} else {
$status = 405;
$contentType = $this->determineContentType($request);
switch ($contentType) {
case 'application/json':
$output = $this->renderJsonNotAllowedMessage($methods);
break;
case 'text/xml':
case 'application/xml':
$output = $this->renderXmlNotAllowedMessage($methods);
break;
case 'text/html':
$output = $this->renderHtmlNotAllowedMessage($methods);
break;
default:
throw new UnexpectedValueException('Cannot render unknown content type ' . $contentType);
}
}
$body = new Body(fopen('php://temp', 'r+'));
$body->write($output);
$allow = implode(', ', $methods);
return $response
->withStatus($status)
->withHeader('Content-type', $contentType)
->withHeader('Allow', $allow)
->withBody($body);
}
/**
* Render plain message for OPTIONS response
*
* @param string[] $methods
*
* @return string
*/
protected function renderPlainOptionsMessage($methods)
{
$allow = implode(', ', $methods);
return 'Allowed methods: ' . $allow;
}
/**
* Render JSON not allowed message
*
* @param string[] $methods
*
* @return string
*/
protected function renderJsonNotAllowedMessage($methods)
{
$allow = implode(', ', $methods);
return '{"message":"Method not allowed. Must be one of: ' . $allow . '"}';
}
/**
* Render XML not allowed message
*
* @param string[] $methods
*
* @return string
*/
protected function renderXmlNotAllowedMessage($methods)
{
$allow = implode(', ', $methods);
return "<root><message>Method not allowed. Must be one of: $allow</message></root>";
}
/**
* Render HTML not allowed message
*
* @param string[] $methods
*
* @return string
*/
protected function renderHtmlNotAllowedMessage($methods)
{
$allow = implode(', ', $methods);
$output = <<<END
<html>
<head>
<title>Method not allowed</title>
<style>
body{
margin:0;
padding:30px;
font:12px/1.5 Helvetica,Arial,Verdana,sans-serif;
}
h1{
margin:0;
font-size:48px;
font-weight:normal;
line-height:48px;
}
</style>
</head>
<body>
<h1>Method not allowed</h1>
<p>Method not allowed. Must be one of: <strong>$allow</strong></p>
</body>
</html>
END;
return $output;
}
}
|
