File indexing completed on 2024-05-12 05:58:46

 <?php
 /**
  *  ocs-webserver
  *
  *  Copyright 2016 by pling GmbH.
  *
  *    This file is part of ocs-webserver.
  *
  *    This program is free software: you can redistribute it and/or modify
  *    it under the terms of the GNU Affero General Public License as
  *    published by the Free Software Foundation, either version 3 of the
  *    License, or (at your option) any later version.
  *
  *    This program is distributed in the hope that it will be useful,
  *    but WITHOUT ANY WARRANTY; without even the implied warranty of
  *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *    GNU Affero General Public License for more details.
  *
  *    You should have received a copy of the GNU Affero General Public License
  *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  **/
 class Default_Model_Discovery
 {
 
     protected $_discoveryDomains = array(
         'YouTube' => array(
             'www.youtube.com',
             'youtube.com'
         )
     );
 
     public function guessGeneralData($url)
     {
         if (!preg_match('/(http|https)\:\/\//', $url)) {
             $url = 'http://' . $url;
         }
         $url_host = parse_url($url, PHP_URL_HOST);
         if (in_array($url_host, $this->_discoveryDomains['YouTube'])) {
             $data = $this->getYoutubeData($this->getYoutubeCode($url));
             $data['content_url'] = $url;
             return $data;
         } else {
             try {
                 return $this->getGeneralData($url);
             } catch (Exception $e) {
                 return null;
             }
 
         }
     }
 
     public function getYoutubeData($code)
     {
         $yt = new Zend_Gdata_YouTube();
         $video = $yt->getVideoEntry($code);
         $data = array(
             'description' => $video->getVideoDescription(),
             'title' => $video->getVideoTitle(),
             'content_type' => 'youtube',
             'thumbnails' => array()
         );
 
         $image_m = new Default_Model_DbTable_Image();
         $ImageHelper = new Default_View_Helper_Image();
         $thumbs = $video->getVideoThumbnails();
         foreach ($thumbs as $thumbnail) {
             $img_src = $thumbnail['url'];
             $filename = $image_m->storeRemoteImage($img_src, $file_info);
             $thumb = array(
                 'full_url' => $ImageHelper->Image($filename, array('temporal' => true)),
                 'filename' => $filename
             );
             $data['thumbnails'][] = $thumb;
         }
 
         return $data;
     }
 
     public function getYouTubeCode($url)
     {
         $url_host = parse_url($url, PHP_URL_HOST);
         if (in_array($url_host, $this->_discoveryDomains['YouTube'])) {
             parse_str(parse_url($url, PHP_URL_QUERY), $url_vars);
             if (!empty($url_vars['v'])) {
                 return $url_vars['v'];
             } else {
                 return false;
             }
         } else {
             return false;
         }
     }
 
     public function getGeneralData($url)
     {
         $meta_info = array(
             'description',
             'og:image'
         );
         $dom = new DOMDocument;
         if (@$dom->loadHTMLFile($url)) {
             $result = array();
             $result['content_url'] = $url;
             $result['title'] = $dom->getElementsByTagName('title')->item(0)->textContent;
             $meta = $dom->getElementsByTagName('meta');
             for ($i = 0; $i < $meta->length; $i++) {
                 $m = $meta->item($i);
                 if (in_array($m->getAttribute('name'), $meta_info) || in_array($m->getAttribute('property'), $meta_info)) {
                     $name = $m->getAttribute('name');
                     if ($name == '') {
                         $name = $m->getAttribute('property');
                     }
                     $result[$name] = $m->getAttribute('content');
                 }
             }
             $host = parse_url($url, PHP_URL_HOST);
 
             $dom_img = $dom->getElementsByTagName('img');
             $result['thumbnails'] = array();
             $image_m = new Default_Model_DbTable_Image();
             $ImageHelper = new Default_View_Helper_Image();
 
             $n_images = 0;
             $src_images = array();
             if (isset($result['og:image'])) {
                 $src_images[] = $result['og:image'];
             }
 
             for ($i = 0; $i < $dom_img->length; $i++) {
                 $src_images[] = $dom_img->item($i)->getAttribute('src');
             }
 
             foreach ($src_images as $img_src) {
                 if (parse_url($img_src, PHP_URL_HOST) == null) {
                     $img_src = dirname($url) . '/' . $img_src;
                 }
                 $file_info = null;
                 try {
                     $filename = $image_m->storeRemoteImage($img_src, $file_info);
                     if ($file_info['size'] > 4096) { #4Kb
                         $thumb = array(
                             'full_url' => $ImageHelper->Image($filename, array('temporal' => true)),
                             'filename' => $filename
                         );
                         $result['thumbnails'][] = $thumb;
                         $n_images++;
                     }
 
                 } catch (Exception $e) {
                 }
                 if ($n_images >= 5) {
                     break;
                 }
             }
 
             $result['content_type'] = 'text';
             return $result;
         } else {
             throw new Exception('Invalid url');
         }
     }
     
 }