inc/poche/pocheCore.php

   1 <?php
   2 /**
   3  * poche, a read it later open source system
   4  *
   5  * @category   poche
   6  * @author     Nicolas Lœuillet <support@inthepoche.com>
   7  * @copyright  2013
   8  * @license    http://www.wtfpl.net/ see COPYING file
   9  */
  10
  11 function encode_string($string)
  12 {
  13     return sha1($string . SALT);
  14 }
  15
  16 function get_external_file($url)
  17 {
  18     $timeout = 15;
  19     $useragent = "Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";
  20
  21     if  (in_array ('curl', get_loaded_extensions())) {
  22         # Fetch feed from URL
  23         $curl = curl_init();
  24         curl_setopt($curl, CURLOPT_URL, $url);
  25         curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
  26         curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
  27         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
  28         curl_setopt($curl, CURLOPT_HEADER, false);
  29
  30         # for ssl, do not verified certificate
  31         curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
  32         curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE );
  33
  34         # FeedBurner requires a proper USER-AGENT...
  35         curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
  36         curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
  37         curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
  38
  39         $data = curl_exec($curl);
  40         $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
  41         $httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);
  42         curl_close($curl);
  43     } else {
  44         # create http context and add timeout and user-agent
  45         $context = stream_context_create(
  46             array(
  47                 'http' => array(
  48                     'timeout' => $timeout,
  49                     'header' => "User-Agent: " . $useragent,
  50                     'follow_location' => true
  51                 ),
  52                 'ssl' => array(
  53                     'verify_peer' => false,
  54                     'allow_self_signed' => true
  55                 )
  56             )
  57         );
  58
  59         # only download page lesser than 4MB
  60         $data = @file_get_contents($url, false, $context, -1, 4000000);
  61
  62         if (isset($http_response_header) and isset($http_response_header[0])) {
  63             $httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE));
  64         }
  65     }
  66
  67     # if response is not empty and response is OK
  68     if (isset($data) and isset($httpcodeOK) and $httpcodeOK) {
  69
  70         # take charset of page and get it
  71         preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
  72
  73         # if meta tag is found
  74         if (!empty($meta[0])) {
  75             preg_match('#charset="?(.*)"#si', $meta[0], $encoding);
  76             # if charset is found set it otherwise, set it to utf-8
  77             $html_charset = (!empty($encoding[1])) ? strtolower($encoding[1]) : 'utf-8';
  78         } else {
  79             $html_charset = 'utf-8';
  80             $encoding[1] = '';
  81         }
  82
  83         # replace charset of url to charset of page
  84         $data = str_replace('charset=' . $encoding[1], 'charset=' . $html_charset, $data);
  85
  86         return $data;
  87     }
  88     else {
  89         return FALSE;
  90     }
  91 }
  92
  93 function fetch_url_content($url)
  94 {
  95     $url = base64_decode($url);
  96     if (pocheTools::isUrl($url)) {
  97         $url = pocheTools::cleanURL($url);
  98         $html = Encoding::toUTF8(get_external_file($url));
  99
 100         # if get_external_file if not able to retrieve HTTPS content, try the same URL with HTTP protocol
 101         if (!preg_match('!^https?://!i', $url) && (!isset($html) || strlen($html) <= 0)) {
 102             $url = 'http://' . $url;
 103             $html = Encoding::toUTF8(get_external_file($url));
 104         }
 105
 106         if (function_exists('tidy_parse_string')) {
 107             $tidy = tidy_parse_string($html, array(), 'UTF8');
 108             $tidy->cleanRepair();
 109             $html = $tidy->value;
 110         }
 111
 112         $parameters = array();
 113         if (isset($html) and strlen($html) > 0)
 114         {
 115             $readability = new Readability($html, $url);
 116             $readability->convertLinksToFootnotes = CONVERT_LINKS_FOOTNOTES;
 117             $readability->revertForcedParagraphElements = REVERT_FORCED_PARAGRAPH_ELEMENTS;
 118
 119             if($readability->init())
 120             {
 121                 $content = $readability->articleContent->innerHTML;
 122                 $parameters['title'] = $readability->articleTitle->innerHTML;
 123                 $parameters['content'] = $content;
 124
 125                 return $parameters;
 126             }
 127         }
 128     }
 129     else {
 130         #$msg->add('e', _('error during url preparation : the link is not valid'));
 131         pocheTools::logm($url . ' is not a valid url');
 132     }
 133
 134     return FALSE;
 135 }
 136
 137 function display_view($view, $id = 0)
 138 {
 139     global $tpl, $store;
 140
 141     $tpl_vars = array();
 142
 143     switch ($view)
 144     {
 145         case 'install':
 146             pocheTools::logm('install mode');
 147             break;
 148         case 'import';
 149             pocheTools::logm('import mode');
 150             break;
 151         case 'export':
 152             $entries = $store->retrieveAll();
 153             $tpl->assign('export', pocheTools::renderJson($entries));
 154             $tpl->draw('export');
 155             pocheTools::logm('export view');
 156             break;
 157         case 'config':
 158             $tpl->assign('load_all_js', 0);
 159             $tpl->draw('head');
 160             $tpl->draw('home');
 161             $tpl->draw('config');
 162             $tpl->draw('js');
 163             $tpl->draw('footer');
 164             pocheTools::logm('config view');
 165             break;
 166         case 'view':
 167             $entry = $store->retrieveOneById($id);
 168             if ($entry != NULL) {
 169                 pocheTools::logm('view link #' . $id);
 170                 $tpl->assign('id', $entry['id']);
 171                 $tpl->assign('url', $entry['url']);
 172                 $tpl->assign('title', $entry['title']);
 173                 $content = $entry['content'];
 174                 if (function_exists('tidy_parse_string')) {
 175                     $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
 176                     $tidy->cleanRepair();
 177                     $content = $tidy->value;
 178                 }
 179                 $tpl->assign('content', $content);
 180                 $tpl->assign('is_fav', $entry['is_fav']);
 181                 $tpl->assign('is_read', $entry['is_read']);
 182                 $tpl->assign('load_all_js', 0);
 183                 $tpl->draw('view');
 184             }
 185             else {
 186                 pocheTools::logm('error in view call : entry is NULL');
 187             }
 188             break;
 189         default: # home view
 190             $entries = $store->getEntriesByView($view);
 191             $tpl_vars = array(
 192                 'entries' => $entries,
 193             );
 194
 195             // if ($full_head == 'yes') {
 196             //     $tpl->assign('load_all_js', 1);
 197             //     $tpl->draw('head');
 198             //     $tpl->draw('home');
 199             // }
 200
 201             // $tpl->draw('entries');
 202             // if ($full_head == 'yes') {
 203             //     $tpl->draw('js');
 204             //     $tpl->draw('footer');
 205             // }
 206             break;
 207     }
 208
 209     return $tpl_vars;
 210 }
 211
 212 /**
 213  * Call action (mark as fav, archive, delete, etc.)
 214  */
 215 function action_to_do($action, $url, $id = 0)
 216 {
 217     global $store;
 218
 219     switch ($action)
 220     {
 221         case 'add':
 222             if($parametres_url = fetch_url_content($url)) {
 223                 if ($store->add($url, $parametres_url['title'], $parametres_url['content'])) {
 224                     pocheTools::logm('add link ' . $url);
 225                     $last_id = $store->getLastId();
 226                     if (DOWNLOAD_PICTURES) {
 227                         $content = filtre_picture($parametres_url['content'], $url, $last_id);
 228                     }
 229                     #$msg->add('s', _('the link has been added successfully'));
 230                 }
 231                 else {
 232                     #$msg->add('e', _('error during insertion : the link wasn\'t added'));
 233                     pocheTools::logm('error during insertion : the link wasn\'t added');
 234                 }
 235             }
 236             else {
 237                 #$msg->add('e', _('error during url preparation : the link wasn\'t added'));
 238                 pocheTools::logm('error during content fetch');
 239             }
 240             break;
 241         case 'delete':
 242             if ($store->deleteById($id)) {
 243                 if (DOWNLOAD_PICTURES) {
 244                     remove_directory(ABS_PATH . $id);
 245                 }
 246                 #$msg->add('s', _('the link has been deleted successfully'));
 247                 pocheTools::logm('delete link #' . $id);
 248             }
 249             else {
 250                 #$msg->add('e', _('the link wasn\'t deleted'));
 251                 pocheTools::logm('error : can\'t delete link #' . $id);
 252             }
 253             break;
 254         case 'toggle_fav' :
 255             $store->favoriteById($id);
 256             pocheTools::logm('mark as favorite link #' . $id);
 257             break;
 258         case 'toggle_archive' :
 259             $store->archiveById($id);
 260             pocheTools::logm('archive link #' . $id);
 261             break;
 262         default:
 263             break;
 264     }
 265 }