ajax/expand.php

   1 <?php
   2
   3 include_once('../lib/config.php');
   4 include_once('../lib/twitese.php');
   5
   6 if (parse_url($_SERVER['HTTP_REFERER'], PHP_URL_HOST) != parse_url(BASE_URL, PHP_URL_HOST)) {
   7         echo '{"error":"Invalid referer."}';
   8         exit();
   9 }
  10
  11 $url = isset($_GET['url']) ? $_GET['url'] : false;
  12 if (!$url || empty($url)) {
  13         echo '{"error":"No URL is provided."}';
  14         exit();
  15 }
  16 if (!filter_var($url, FILTER_VALIDATE_URL)) {
  17         echo '{"error":"Malformed URL."}';
  18         exit();
  19 }
  20
  21 $thehops = array();
  22 $answer = expandRedirect($url, $thehops);
  23 if (!$answer) {
  24         echo '{"error":"No URL is provided."}';
  25 }
  26 else
  27         echo "{\"expanded_url\":\"$answer\"}";
  28
  29 ?>