mod/parse_url.php

   1 <?php
   2
   3 require_once('library/HTML5/Parser.php');
   4 require_once('library/HTMLPurifier.auto.php');
   5
   6 function parse_url_content(&$a) {
   7
   8         logger('parse_url: ' . $_GET['url']);
   9
  10         $url = trim(hex2bin($_GET['url']));
  11
  12         logger('parse_url: ' . $url);
  13
  14         $text = null;
  15
  16         $template = "<a href=\"%s\" >%s</a>\n%s";
  17
  18
  19         $arr = array('url' => $url, 'text' => '');
  20
  21         call_hooks('parse_link', $arr);
  22
  23         if(strlen($arr['text'])) {
  24                 echo $arr['text'];
  25                 killme();
  26         }
  27
  28         if($url) {
  29                 $s = fetch_url($url);
  30         } else {
  31                 echo '';
  32                 killme();
  33         }
  34
  35         logger('parse_url: data: ' . $s, LOGGER_DATA);
  36
  37         if(! $s) {
  38                 echo sprintf($template,$url,$url,'');
  39                 killme();
  40         }
  41
  42         $config = HTMLPurifier_Config::createDefault();
  43         $config->set('Cache.DefinitionImpl', null);
  44
  45         $purifier = new HTMLPurifier($config);
  46         $s = $purifier->purify($s);
  47
  48         $dom = @HTML5_Parser::parse($s);
  49
  50         if(! $dom) {
  51                 echo sprintf($template,$url,$url,'');
  52                 killme();
  53         }
  54
  55         $items = $dom->getElementsByTagName('title');
  56
  57         if($items) {
  58                 foreach($items as $item) {
  59                         $title = trim($item->textContent);
  60                         break;
  61                 }
  62         }
  63
  64         $divs = $dom->getElementsByTagName('div');
  65         if($divs) {
  66                 foreach($divs as $div) {
  67                         $class = $div->getAttribute('class');
  68                         if($class && stristr($class,'article')) {
  69                                 $items = $div->getElementsByTagName('p');
  70                                 if($items) {
  71                                         foreach($items as $item) {
  72                                                 if($item->getElementsByTagName('script'))
  73                                                         continue;
  74                                                 $text = $item->textContent;
  75                                                 $text = strip_tags($text);
  76                                                 if(strlen($text) < 100)
  77                                                         continue;
  78                                                 $text = substr($text,0,250) . '...' ;
  79                                                 break;
  80                                         }
  81                                 }
  82                         }
  83                 }
  84         }
  85
  86         if(! $text) {
  87                 $items = $dom->getElementsByTagName('p');
  88                 if($items) {
  89                         foreach($items as $item) {
  90                                 if($item->getElementsByTagName('script'))
  91                                         continue;
  92                                 $text = $item->textContent;
  93                                 $text = strip_tags($text);
  94                                 if(strlen($text) < 100)
  95                                         continue;
  96                                 $text = substr($text,0,250) . '...' ;
  97                                 break;
  98                         }
  99                 }
 100         }
 101
 102         if(strlen($text)) {
 103                 $text = '<br />' . $text;
 104         }
 105
 106         echo sprintf($template,$url,($title) ? $title : $url,$text);
 107         killme();
 108 }