git-svn-id: https://msi/svn/firstRepo/Service/branches/Slim3@40 0f545695-f87b-41b6-9a03-7f16563b5454

2016-01-05 21:43:12 +00:00
parent 4318dd829f
commit 00d78a2ba8
46 changed files with 4960 additions and 32 deletions
@@ -0,0 +1,173 @@
+<?php
+/**
+ * Slim Framework (http://slimframework.com)
+ *
+ * @link      https://github.com/slimphp/Slim
+ * @copyright Copyright (c) 2011-2015 Josh Lockhart
+ * @license   https://github.com/slimphp/Slim/blob/3.x/LICENSE.md (MIT License)
+ */
+namespace Slim\Handlers;
+
+use Psr\Http\Message\ServerRequestInterface;
+use Psr\Http\Message\ResponseInterface;
+use Slim\Http\Body;
+
+/**
+ * Default Slim application not allowed handler
+ *
+ * It outputs a simple message in either JSON, XML or HTML based on the
+ * Accept header.
+ */
+class NotAllowed
+{
+    /**
+     * Known handled content types
+     *
+     * @var array
+     */
+    protected $knownContentTypes = [
+        'application/json',
+        'application/xml',
+        'text/xml',
+        'text/html',
+    ];
+
+    /**
+     * Invoke error handler
+     *
+     * @param  ServerRequestInterface $request  The most recent Request object
+     * @param  ResponseInterface      $response The most recent Response object
+     * @param  string[]               $methods  Allowed HTTP methods
+     *
+     * @return ResponseInterface
+     */
+    public function __invoke(ServerRequestInterface $request, ResponseInterface $response, array $methods)
+    {
+        if ($request->getMethod() === 'OPTIONS') {
+            $status = 200;
+            $contentType = 'text/plain';
+            $output = $this->renderPlainNotAllowedMessage($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;
+            }
+        }
+
+        $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);
+    }
+
+    /**
+     * Determine which content type we know about is wanted using Accept header
+     *
+     * @param ServerRequestInterface $request
+     * @return string
+     */
+    private function determineContentType(ServerRequestInterface $request)
+    {
+        $acceptHeader = $request->getHeaderLine('Accept');
+        $selectedContentTypes = array_intersect(explode(',', $acceptHeader), $this->knownContentTypes);
+
+        if (count($selectedContentTypes)) {
+            return $selectedContentTypes[0];
+        }
+
+        return 'text/html';
+    }
+
+    /**
+     * Render PLAIN not allowed message
+     *
+     * @param  array                  $methods
+     * @return string
+     */
+    protected function renderPlainNotAllowedMessage($methods)
+    {
+        $allow = implode(', ', $methods);
+
+        return 'Allowed methods: ' . $allow;
+    }
+
+    /**
+     * Render JSON not allowed message
+     *
+     * @param  array                  $methods
+     * @return string
+     */
+    protected function renderJsonNotAllowedMessage($methods)
+    {
+        $allow = implode(', ', $methods);
+
+        return '{"message":"Method not allowed. Must be one of: ' . $allow . '"}';
+    }
+
+    /**
+     * Render XML not allowed message
+     *
+     * @param  array                  $methods
+     * @return string
+     */
+    protected function renderXmlNotAllowedMessage($methods)
+    {
+        $allow = implode(', ', $methods);
+
+        return "<root><message>Method not allowed. Must be one of: $allow</message></root>";
+    }
+
+    /**
+     * Render HTML not allowed message
+     *
+     * @param  array                  $methods
+     * @return string
+     */
+    protected function renderHtmlNotAllowedMessage($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;
+    }
+}