Introduce new AJAX framework with improved class use

[infodrom.org/service.infodrom.org] / src / ajax.php

diff --git a/src/ajax.php b/src/ajax.php
index 6c38fa6..c613aab 100644 (file)
--- a/src/ajax.php
+++ b/src/ajax.php
@@ -2,38 +2,40 @@
 require_once('config.php');
 require_once('future.php');
 
-$data = array();
-
-if (strlen($_POST['func'])) {
-  $backend = new AJAXBackend();
-
-  if (method_exists($backend, $_POST['func'])) {
-    $func = $_POST['func'];
-    json_return($backend->$func());
+function route_request()
+{
+  if (empty($_SERVER['REMOTE_USER']))
+    return ajax_error('Die Sitzung ist abgelaufen, Sie werden zur Startseite weitergeleiet.', true);
+
+  list($class, $function) = explode('/', $_POST['route'], 2);
+  $method = 'ajax'.$function;
+
+  if (!class_exists($class))
+    return ajax_error('Klasse '.htmlspecialchars($class).' existiert nicht.');
+
+  try {
+    if (array_key_exists('id', $_POST))
+      $object = Factory::get($class, $_POST['id']);
+    else
+      $object = Factory::get($class);
+  } catch (Exception $e) {
+    return ajax_error('Klasse '.htmlspecialchars($class).'kann nicht instanziiert werden:<br>'.htmlspecialchars($e->getMessage()));
   }
 
-  $path = substr($_SERVER['HTTP_REFERER'], strpos($_SERVER['HTTP_REFERER'], $_SERVER['SERVER_NAME'])+strlen($_SERVER['SERVER_NAME'])+1);
-  $slash = strpos($path, '/', strpos($path, '/')+1);
-
-  if ($slash !== false) {
-    $path = getcwd() . '/' . substr($path, 0, $slash) . '/' . 'moduleajaxbackend.class.php';
-
-    if (file_exists($path)) {
-      require_once($path);
-      $backend = new ModuleAJAXBackend();
+  if (!method_exists($object, $method))
+    return ajax_error('Klasse '.htmlspecialchars($class).':<br>AJAX-Backend '.htmlspecialchars($function).' existiert nicht.');
 
-      $method = 'ajax_' . $_POST['func'];
-      if (method_exists($backend, $method)) {
-       json_return($backend->$method());
-      }
-    }
-  }
-
-  error_log('Unknown function '.$_POST['func']);
-  json_return(array('status' => false,
-                   'error' => 'Unknown function '.urlencode($_POST['func']).'.'));
+  $return = $object->$method($_POST);
+  if (is_bool($return)) $return = array('status' => $return);
+  return $return;
 }
 
-error_log('Unknown usage');
-json_return(array('status' => false, 'error' => 'Unknown usage'));
+if (strlen($_POST['route'])) {
+  $data = route_request();
+  if (!array_key_exists('status', $data))
+    $data['status'] = true;
+} else {
+  $data = array('status' => false, 'error' => 'Keine Route angegeben');
+}
 
+json_return($data);