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 (!function_exists("curl_init"))
  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                                 if (ini_get("safe_mode") || ini_get("open_basedir")) {
  28                                         $ch = curl_init(geturl($article["link"]));
  29                                 } else {
  30                                         $ch = curl_init($article["link"]);
  31                                 }
  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, !ini_get("safe_mode") && !ini_get("open_basedir"));
  37                                 curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
  38
  39                                 if (defined('_CURL_HTTP_PROXY')) {
  40                                         curl_setopt($ch, CURLOPT_PROXY, _CURL_HTTP_PROXY);
  41                                 }
  42
  43                                 @curl_exec($ch);
  44
  45                                 $real_url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
  46
  47                                 curl_close($ch);
  48
  49                                 if ($real_url) {
  50                                         /* remove the rest of it */
  51
  52                                         $query = parse_url($real_url, PHP_URL_QUERY);
  53
  54                                         if ($query && strpos($query, "utm_source") !== FALSE) {
  55                                                 $args = array();
  56                                                 parse_str($query, $args);
  57
  58                                                 foreach (array("utm_source", "utm_medium", "utm_campaign") as $param) {
  59                                                         if (isset($args[$param])) unset($args[$param]);
  60                                                 }
  61
  62                                                 $new_query = http_build_query($args);
  63
  64                                                 if ($new_query != $query) {
  65                                                         $real_url = str_replace("?$query", "?$new_query", $real_url);
  66                                                 }
  67                                         }
  68
  69                                         $real_url = preg_replace("/\?$/", "", $real_url);
  70
  71                                         $article["plugin_data"] = "unburn,$owner_uid:" . $article["plugin_data"];
  72                                         $article["link"] = $real_url;
  73                                 }
  74                 }
  75
  76                 return $article;
  77         }
  78
  79                 function geturl($url){
  80
  81                 (function_exists('curl_init')) ? '' : die('cURL Must be installed for geturl function to work. Ask your host to enable it or uncomment extension=php_curl.dll in php.ini');
  82
  83                 $curl = curl_init();
  84                 $header[0] = "Accept: text/xml,application/xml,application/xhtml+xml,";
  85                 $header[0] .= "text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5";
  86                 $header[] = "Cache-Control: max-age=0";
  87                 $header[] = "Connection: keep-alive";
  88                 $header[] = "Keep-Alive: 300";
  89                 $header[] = "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7";
  90                 $header[] = "Accept-Language: en-us,en;q=0.5";
  91                 $header[] = "Pragma: ";
  92
  93                 curl_setopt($curl, CURLOPT_URL, $url);
  94                 curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20100101 Firefox/5.0 Firefox/5.0');
  95                 curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
  96                 curl_setopt($curl, CURLOPT_HEADER, true);
  97                 curl_setopt($curl, CURLOPT_REFERER, $url);
  98                 curl_setopt($curl, CURLOPT_ENCODING, 'gzip,deflate');
  99                 curl_setopt($curl, CURLOPT_AUTOREFERER, true);
 100                 curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
 101                 //curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); //CURLOPT_FOLLOWLOCATION Disabled...
 102                 curl_setopt($curl, CURLOPT_TIMEOUT, 60);
 103
 104                 $html = curl_exec($curl);
 105
 106                 $status = curl_getinfo($curl);
 107                 curl_close($curl);
 108
 109                 if($status['http_code']!=200){
 110                         if($status['http_code'] == 301 || $status['http_code'] == 302) {
 111                                 list($header) = explode("\r\n\r\n", $html, 2);
 112                                 $matches = array();
 113                                 preg_match("/(Location:|URI:)[^(\n)]*/", $header, $matches);
 114                                 $url = trim(str_replace($matches[1],"",$matches[0]));
 115                                 $url_parsed = parse_url($url);
 116                                 return (isset($url_parsed))? geturl($url):'';
 117                         }
 118                         $oline='';
 119                         foreach($status as $key=>$eline){$oline.='['.$key.']'.$eline.' ';}
 120                         $line =$oline." \r\n ".$url."\r\n-----------------\r\n";
 121                         $handle = @fopen('./curl.error.log', 'a');
 122                         fwrite($handle, $line);
 123                         return FALSE;
 124                 }
 125                 return $url;
 126         }
 127
 128         function api_version() {
 129                 return 2;
 130         }
 131
 132 }
 133 ?>