php/index.php

   1 <?php
   2 /**
   3  * Licensed to the Apache Software Foundation (ASF) under one
   4  * or more contributor license agreements.  See the NOTICE file
   5  * distributed with this work for additional information
   6  * regarding copyright ownership.  The ASF licenses this file
   7  * to you under the Apache License, Version 2.0 (the
   8  * "License"); you may not use this file except in compliance
   9  * with the License.  You may obtain a copy of the License at
  10  *
  11  *     http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing,
  14  * software distributed under the License is distributed on an
  15  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  16  * KIND, either express or implied.  See the License for the
  17  * specific language governing permissions and limitations
  18  * under the License.
  19  */
  20
  21 // Some people forget to set their timezone in their php.ini,
  22 // this prevents that from generating warnings
  23 @date_default_timezone_set(@date_default_timezone_get());
  24
  25 include_once ('src/common/Config.php');
  26 include_once ('src/common/File.php');
  27
  28 if (Config::get('debug')) {
  29   // Basic sanity check if we have all required modules
  30   $modules = array('json', 'SimpleXML', 'libxml', 'curl', 'openssl');
  31   // if plain text tokens are disallowed we require mcrypt
  32   if (! Config::get('allow_plaintext_token')) {
  33     $modules[] = 'mcrypt';
  34   }
  35   // if you selected the memcache caching backend, you need the memcache extention too :)
  36   if (Config::get('data_cache') == 'CacheMemcache') {
  37     $modules[] = 'memcache';
  38   }
  39   foreach ($modules as $module) {
  40     if (! extension_loaded($module)) {
  41       die("Shindig requires the {$module} extention, see <a href='http://www.php.net/{$module}'>http://www.php.net/{$module}</a> for more info");
  42     }
  43   }
  44 }
  45
  46 // All configurable classes are autoloaded (see config.php for the configurable classes)
  47 // To load these, we scan our entire directory structure
  48 function __autoload($className) {
  49   $locations = array(
  50     'src/common',
  51     'src/common/sample',
  52     'src/gadgets',
  53     'src/gadgets/servlet',
  54     'src/gadgets/oauth',
  55     'src/gadgets/sample',
  56     'src/social',
  57     'src/social/servlet',
  58     'src/social/service',
  59     'src/social/opensocial',
  60     'src/social/model',
  61     'src/social/spi',
  62     'src/social/converters',
  63     'src/social/oauth',
  64     'src/social/sample'
  65   );
  66   $extension_class_paths = Config::get('extension_class_paths');
  67   if (! empty($extension_class_paths)) {
  68     $locations = array_merge(explode(',', $extension_class_paths), $locations);
  69   }
  70   // Check for the presense of this class in our all our directories.
  71   $fileName = $className . '.php';
  72   foreach ($locations as $path) {
  73     if (file_exists("{$path}/$fileName")) {
  74       require $path.'/'.$fileName;
  75       break;
  76     }
  77   }
  78 }
  79
  80 $servletMap = array(
  81     Config::get('web_prefix') . '/gadgets/files' => 'FilesServlet',
  82     Config::get('web_prefix') . '/gadgets/js' => 'JsServlet',
  83     Config::get('web_prefix') . '/gadgets/proxy' => 'ProxyServlet',
  84     Config::get('web_prefix') . '/gadgets/makeRequest' => 'ProxyServlet',
  85     Config::get('web_prefix') . '/gadgets/ifr' => 'GadgetRenderingServlet',
  86     Config::get('web_prefix') . '/gadgets/metadata' => 'MetadataServlet',
  87     Config::get('web_prefix') . '/social/rest' => 'DataServiceServlet',
  88     Config::get('web_prefix') . '/social/rpc' => 'JsonRpcServlet',
  89     Config::get('web_prefix') . '/public.crt' => 'CertServlet',
  90     Config::get('web_prefix') . '/public.cer' => 'CertServlet'
  91 );
  92
  93 // Try to match the request url to our servlet mapping
  94 $servlet = false;
  95 $uri = $_SERVER["REQUEST_URI"];
  96 foreach ($servletMap as $url => $class) {
  97   if (substr($uri, 0, strlen($url)) == $url) {
  98     //FIXME temporary hack to support both /proxy and /makeRequest with the same event handler
  99     // /makeRequest == /proxy?output=js
 100     if ($url == Config::get('web_prefix') . '/gadgets/makeRequest') {
 101       $_GET['output'] = 'js';
 102     }
 103     $servlet = $class;
 104     break;
 105   }
 106 }
 107
 108 // If we found a correlating servlet, instance and call it. Otherwise give a 404 error
 109 if ($servlet) {
 110   $class = new $class();
 111   $method = $_SERVER['REQUEST_METHOD'];
 112   // Not all clients support the PUT, HEAD & DELETE http methods, they depend on the X-HTTP-Method-Override instead
 113   if ($method == 'POST' && isset($_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'])) {
 114     $method = $_SERVER['HTTP_X_HTTP_METHOD_OVERRIDE'];
 115   }
 116   $method = 'do' . ucfirst(strtolower($method));
 117   if (is_callable(array($class, $method))) {
 118     $class->$method();
 119   } else {
 120     header("HTTP/1.0 405 Method Not Allowed");
 121     echo "<html><body><h1>405 Method Not Allowed</h1></body></html>";
 122   }
 123 } else {
 124   // Unhandled event, display simple 404 error
 125   header("HTTP/1.0 404 Not Found");
 126   echo "<html><body><h1>404 Not Found</h1></body></html>";
 127 }