plugins/af_unburn/init.php

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