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<?php |
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/** |
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* Slim Framework (https://slimframework.com) |
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* |
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* @link https://github.com/slimphp/Slim |
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* @copyright Copyright (c) 2011-2017 Josh Lockhart |
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* @license https://github.com/slimphp/Slim/blob/3.x/LICENSE.md (MIT License) |
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*/ |
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namespace Slim\Handlers; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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use Slim\Http\Body; |
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use UnexpectedValueException; |
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/** |
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* Default Slim application not allowed handler |
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* |
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* It outputs a simple message in either JSON, XML or HTML based on the |
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* Accept header. |
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*/ |
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class NotAllowed extends AbstractHandler |
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{ |
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/** |
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* Invoke error handler |
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* |
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* @param ServerRequestInterface $request The most recent Request object |
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* @param ResponseInterface $response The most recent Response object |
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* @param string[] $methods Allowed HTTP methods |
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* |
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* @return ResponseInterface |
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* @throws UnexpectedValueException |
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*/ |
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public function __invoke(ServerRequestInterface $request, ResponseInterface $response, array $methods) |
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{ |
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if ($request->getMethod() === 'OPTIONS') { |
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$status = 200; |
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$contentType = 'text/plain'; |
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$output = $this->renderPlainOptionsMessage($methods); |
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} else { |
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$status = 405; |
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$contentType = $this->determineContentType($request); |
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switch ($contentType) { |
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case 'application/json': |
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$output = $this->renderJsonNotAllowedMessage($methods); |
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break; |
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case 'text/xml': |
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case 'application/xml': |
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$output = $this->renderXmlNotAllowedMessage($methods); |
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break; |
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case 'text/html': |
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$output = $this->renderHtmlNotAllowedMessage($methods); |
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break; |
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default: |
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throw new UnexpectedValueException('Cannot render unknown content type ' . $contentType); |
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} |
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} |
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$body = new Body(fopen('php://temp', 'r+')); |
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$body->write($output); |
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$allow = implode(', ', $methods); |
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return $response |
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->withStatus($status) |
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->withHeader('Content-type', $contentType) |
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->withHeader('Allow', $allow) |
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->withBody($body); |
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} |
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/** |
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* Render PLAIN message for OPTIONS response |
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* |
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* @param array $methods |
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* @return string |
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*/ |
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protected function renderPlainOptionsMessage($methods) |
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{ |
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$allow = implode(', ', $methods); |
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return 'Allowed methods: ' . $allow; |
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} |
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/** |
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* Render JSON not allowed message |
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* |
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* @param array $methods |
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* @return string |
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*/ |
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protected function renderJsonNotAllowedMessage($methods) |
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{ |
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$allow = implode(', ', $methods); |
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return '{"message":"Method not allowed. Must be one of: ' . $allow . '"}'; |
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} |
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/** |
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* Render XML not allowed message |
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* |
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* @param array $methods |
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* @return string |
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*/ |
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protected function renderXmlNotAllowedMessage($methods) |
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{ |
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$allow = implode(', ', $methods); |
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return "<root><message>Method not allowed. Must be one of: $allow</message></root>"; |
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} |
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/** |
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* Render HTML not allowed message |
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* |
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* @param array $methods |
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* @return string |
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*/ |
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protected function renderHtmlNotAllowedMessage($methods) |
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{ |
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$allow = implode(', ', $methods); |
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$output = <<<END |
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<html> |
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<head> |
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<title>Method not allowed</title> |
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<style> |
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body{ |
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margin:0; |
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padding:30px; |
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font:12px/1.5 Helvetica,Arial,Verdana,sans-serif; |
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} |
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h1{ |
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margin:0; |
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font-size:48px; |
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font-weight:normal; |
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line-height:48px; |
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} |
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</style> |
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</head> |
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<body> |
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<h1>Method not allowed</h1> |
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<p>Method not allowed. Must be one of: <strong>$allow</strong></p> |
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</body> |
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</html> |
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END; |
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return $output; |
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} |
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} |
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slimphp /
Slim
