plugins/af_unburn/init.php

   1 <?php
   2 class Af_Unburn extends Plugin {
   3         private $host;
   4
   5         function about() {
   6                 return array(1.0,
   7                         "Resolves feedburner and similar feed redirector URLs (requires CURL)",
   8                         "fox");
   9         }
  10
  11         function init($host) {
  12                 $this->host = $host;
  13
  14                 $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  15         }
  16
  17         function hook_article_filter($article) {
  18                 $owner_uid = $article["owner_uid"];
  19
  20                 if (defined('NO_CURL') || !function_exists("curl_init") || ini_get("open_basedir"))
  21                         return $article;
  22
  23                 if ((strpos($article["link"], "feedproxy.google.com") !== FALSE ||
  24                                 strpos($article["link"], "/~r/") !== FALSE ||
  25                                 strpos($article["link"], "feedsportal.com") !== FALSE)) {
  26
  27                                 $ch = curl_init($article["link"]);
  28
  29                                 curl_setopt($ch, CURLOPT_TIMEOUT, 5);
  30                                 curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
  31                                 curl_setopt($ch, CURLOPT_HEADER, true);
  32                                 curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
  33                                 curl_setopt($ch, CURLOPT_NOBODY, true);
  34                                 curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
  35
  36                                 if (defined('_CURL_HTTP_PROXY')) {
  37                                         curl_setopt($ch, CURLOPT_PROXY, _CURL_HTTP_PROXY);
  38                                 }
  39
  40                                 @curl_exec($ch);
  41
  42                                 $real_url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
  43
  44                                 curl_close($ch);
  45
  46                                 if ($real_url) {
  47                                         /* remove the rest of it */
  48
  49                                         $query = parse_url($real_url, PHP_URL_QUERY);
  50
  51                                         if ($query && strpos($query, "utm_source") !== FALSE) {
  52                                                 $args = array();
  53                                                 parse_str($query, $args);
  54
  55                                                 foreach (array("utm_source", "utm_medium", "utm_campaign") as $param) {
  56                                                         if (isset($args[$param])) unset($args[$param]);
  57                                                 }
  58
  59                                                 $new_query = http_build_query($args);
  60
  61                                                 if ($new_query != $query) {
  62                                                         $real_url = str_replace("?$query", "?$new_query", $real_url);
  63                                                 }
  64                                         }
  65
  66                                         $real_url = preg_replace("/\?$/", "", $real_url);
  67
  68                                         $article["plugin_data"] = "unburn,$owner_uid:" . $article["plugin_data"];
  69                                         $article["link"] = $real_url;
  70                                 }
  71                 }
  72
  73                 return $article;
  74         }
  75
  76         function api_version() {
  77                 return 2;
  78         }
  79
  80 }
  81 ?>