plugins/af_unburn/init.php

   1 <?php
   2 class Af_Unburn extends Plugin {
   3         private $host;
   4
   5         function about() {
   6                 return array(1.0,
   7                         "Resolves feedburner and similar feed redirector URLs (requires CURL)",
   8                         "fox");
   9         }
  10
  11         function flags() {
  12                 return array("needs_curl" => true);
  13         }
  14
  15         function init($host) {
  16                 $this->host = $host;
  17
  18                 $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  19         }
  20
  21         function hook_article_filter($article) {
  22                 $owner_uid = $article["owner_uid"];
  23
  24                 if (defined('NO_CURL') || !function_exists("curl_init") || ini_get("open_basedir"))
  25                         return $article;
  26
  27                 if ((strpos($article["link"], "feedproxy.google.com") !== FALSE ||
  28                                 strpos($article["link"], "/~r/") !== FALSE ||
  29                                 strpos($article["link"], "feedsportal.com") !== FALSE)) {
  30
  31                                 $ch = curl_init($article["link"]);
  32
  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($ch, CURLOPT_NOBODY, true);
  38                                 curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
  39
  40                                 if (defined('_CURL_HTTP_PROXY')) {
  41                                         curl_setopt($ch, CURLOPT_PROXY, _CURL_HTTP_PROXY);
  42                                 }
  43
  44                                 @curl_exec($ch);
  45
  46                                 $real_url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
  47
  48                                 curl_close($ch);
  49
  50                                 if ($real_url) {
  51                                         /* remove the rest of it */
  52
  53                                         $query = parse_url($real_url, PHP_URL_QUERY);
  54
  55                                         if ($query && strpos($query, "utm_source") !== FALSE) {
  56                                                 $args = array();
  57                                                 parse_str($query, $args);
  58
  59                                                 foreach (array("utm_source", "utm_medium", "utm_campaign") as $param) {
  60                                                         if (isset($args[$param])) unset($args[$param]);
  61                                                 }
  62
  63                                                 $new_query = http_build_query($args);
  64
  65                                                 if ($new_query != $query) {
  66                                                         $real_url = str_replace("?$query", "?$new_query", $real_url);
  67                                                 }
  68                                         }
  69
  70                                         $real_url = preg_replace("/\?$/", "", $real_url);
  71
  72                                         $article["plugin_data"] = "unburn,$owner_uid:" . $article["plugin_data"];
  73                                         $article["link"] = $real_url;
  74                                 }
  75                 }
  76
  77                 return $article;
  78         }
  79
  80         function api_version() {
  81                 return 2;
  82         }
  83
  84 }
  85 ?>