inc/functions.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 /**
  12  * Permet de générer l'URL de poche pour le bookmarklet
  13  */
  14 function get_poche_url()
  15 {
  16     $protocol = "http";
  17     if(isset($_SERVER['HTTPS'])) {
  18         if($_SERVER['HTTPS'] != "off" && $_SERVER['HTTPS'] != "") {
  19             $protocol = "https";
  20         }
  21     }
  22
  23     return $protocol . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
  24 }
  25
  26 // function define to retrieve url content
  27 function get_external_file($url)
  28 {
  29     $timeout = 15;
  30     // spoofing FireFox 18.0
  31     $useragent="Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";
  32
  33     if  (in_array  ('curl', get_loaded_extensions())) {
  34         // Fetch feed from URL
  35         $curl = curl_init();
  36         curl_setopt($curl, CURLOPT_URL, $url);
  37         curl_setopt($curl, CURLOPT_TIMEOUT, $timeout);
  38         curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
  39         curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
  40         curl_setopt($curl, CURLOPT_HEADER, false);
  41
  42         // FeedBurner requires a proper USER-AGENT...
  43         curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
  44         curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
  45         curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
  46
  47         $data = curl_exec($curl);
  48
  49         $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
  50
  51         $httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);
  52
  53         curl_close($curl);
  54     } else {
  55
  56         // create http context and add timeout and user-agent
  57         $context = stream_context_create(array('http'=>array('timeout' => $timeout,'header'=> "User-Agent: ".$useragent,/*spoot Mozilla Firefox*/'follow_location' => true)));
  58
  59         // only download page lesser than 4MB
  60         $data = @file_get_contents($url, false, $context, -1, 4000000); // We download at most 4 MB from source.
  61
  62         if(isset($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             // retrieve encoding in $enc
  76             preg_match('#charset="?(.*)"#si', $meta[0], $enc);
  77
  78             // if charset is found set it otherwise, set it to utf-8
  79             $html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';
  80
  81         } else {
  82             $html_charset = 'utf-8';
  83             $enc[1] = '';
  84         }
  85
  86         // replace charset of url to charset of page
  87         $data = str_replace('charset='.$enc[1], 'charset='.$html_charset, $data);
  88
  89         return $data;
  90     }
  91     else {
  92         return FALSE;
  93     }
  94 }
  95
  96 /**
  97  * Préparation de l'URL avec récupération du contenu avant insertion en base
  98  */
  99 function prepare_url($url)
 100 {
 101     $parametres = array();
 102     $url        = html_entity_decode(trim($url));
 103
 104     // We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
 105     // from shaarli, by sebsauvage
 106     $i=strpos($url,'&utm_source='); if ($i!==false) $url=substr($url,0,$i);
 107     $i=strpos($url,'?utm_source='); if ($i!==false) $url=substr($url,0,$i);
 108     $i=strpos($url,'#xtor=RSS-'); if ($i!==false) $url=substr($url,0,$i);
 109
 110     $title = $url;
 111     if (!preg_match('!^https?://!i', $url))
 112         $url = 'http://' . $url;
 113
 114     $html = Encoding::toUTF8(get_external_file($url,15));
 115     if (isset($html) and strlen($html) > 0)
 116     {
 117         $r = new Readability($html, $url);
 118         $r->convertLinksToFootnotes = CONVERT_LINKS_FOOTNOTES;
 119         if($r->init())
 120         {
 121             $content = $r->articleContent->innerHTML;
 122             $parametres['title'] = $r->articleTitle->innerHTML;
 123             $parametres['content'] = $content;
 124             return $parametres;
 125         }
 126     }
 127
 128     $msg->add('e', 'error during url preparation');
 129     logm('error during url preparation');
 130     return FALSE;
 131 }
 132
 133 /**
 134  * On modifie les URLS des images dans le corps de l'article
 135  */
 136 function filtre_picture($content, $url, $id)
 137 {
 138     $matches = array();
 139     preg_match_all('#<\s*(img)[^>]+src="([^"]*)"[^>]*>#Si', $content, $matches, PREG_SET_ORDER);
 140     foreach($matches as $i => $link)
 141     {
 142         $link[1] = trim($link[1]);
 143         if (!preg_match('#^(([a-z]+://)|(\#))#', $link[1]) )
 144         {
 145             $absolute_path = get_absolute_link($link[2],$url);
 146             $filename = basename(parse_url($absolute_path, PHP_URL_PATH));
 147             $directory = create_assets_directory($id);
 148             $fullpath = $directory . '/' . $filename;
 149             download_pictures($absolute_path, $fullpath);
 150             $content = str_replace($matches[$i][2], $fullpath, $content);
 151         }
 152
 153     }
 154
 155     return $content;
 156 }
 157
 158 /**
 159  * Retourne le lien absolu
 160  */
 161 function get_absolute_link($relative_link, $url)
 162 {
 163     /* return if already absolute URL */
 164     if (parse_url($relative_link, PHP_URL_SCHEME) != '') return $relative_link;
 165
 166     /* queries and anchors */
 167     if ($relative_link[0]=='#' || $relative_link[0]=='?') return $url . $relative_link;
 168
 169     /* parse base URL and convert to local variables:
 170        $scheme, $host, $path */
 171     extract(parse_url($url));
 172
 173     /* remove non-directory element from path */
 174     $path = preg_replace('#/[^/]*$#', '', $path);
 175
 176     /* destroy path if relative url points to root */
 177     if ($relative_link[0] == '/') $path = '';
 178
 179     /* dirty absolute URL */
 180     $abs = $host . $path . '/' . $relative_link;
 181
 182     /* replace '//' or '/./' or '/foo/../' with '/' */
 183     $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
 184     for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {}
 185
 186     /* absolute URL is ready! */
 187     return $scheme.'://'.$abs;
 188 }
 189
 190 /**
 191  * Téléchargement des images
 192  */
 193
 194 function download_pictures($absolute_path, $fullpath)
 195 {
 196     $rawdata = get_external_file($absolute_path);
 197
 198     if(file_exists($fullpath)) {
 199         unlink($fullpath);
 200     }
 201     $fp = fopen($fullpath, 'x');
 202     fwrite($fp, $rawdata);
 203     fclose($fp);
 204 }
 205
 206 /**
 207  * Crée un répertoire de médias pour l'article
 208  */
 209 function create_assets_directory($id)
 210 {
 211     $assets_path = ABS_PATH;
 212     if(!is_dir($assets_path)) {
 213         mkdir($assets_path, 0705);
 214     }
 215
 216     $article_directory = $assets_path . $id;
 217     if(!is_dir($article_directory)) {
 218         mkdir($article_directory, 0705);
 219     }
 220
 221     return $article_directory;
 222 }
 223
 224 /**
 225  * Suppression du répertoire d'images
 226  */
 227 function remove_directory($directory)
 228 {
 229     if(is_dir($directory)) {
 230         $files = array_diff(scandir($directory), array('.','..'));
 231         foreach ($files as $file) {
 232             (is_dir("$directory/$file")) ? remove_directory("$directory/$file") : unlink("$directory/$file");
 233         }
 234         return rmdir($directory);
 235     }
 236 }
 237
 238 function display_view($view, $id = 0, $full_head = 'yes')
 239 {
 240     global $tpl, $store, $msg;
 241
 242     switch ($view)
 243     {
 244         case 'export':
 245             $entries = $store->retrieveAll();
 246             $tpl->assign('export', myTool::renderJson($entries));
 247             $tpl->draw('export');
 248             logm('export view');
 249             break;
 250         case 'config':
 251             $tpl->assign('load_all_js', 0);
 252             $tpl->draw('head');
 253             $tpl->draw('home');
 254             $tpl->draw('config');
 255             $tpl->draw('js');
 256             $tpl->draw('footer');
 257             logm('config view');
 258             break;
 259         case 'view':
 260             $entry = $store->retrieveOneById($id);
 261
 262             if ($entry != NULL) {
 263                 $tpl->assign('id', $entry['id']);
 264                 $tpl->assign('url', $entry['url']);
 265                 $tpl->assign('title', $entry['title']);
 266                 $tpl->assign('content', $entry['content']);
 267                 $tpl->assign('is_fav', $entry['is_fav']);
 268                 $tpl->assign('is_read', $entry['is_read']);
 269                 $tpl->assign('load_all_js', 0);
 270                 $tpl->draw('view');
 271             }
 272             else {
 273                 logm('error in view call : entry is NULL');
 274             }
 275
 276             logm('view link #' . $id);
 277             break;
 278         default: # home view
 279             $entries = $store->getEntriesByView($view);
 280
 281             $tpl->assign('entries', $entries);
 282
 283             if ($full_head == 'yes') {
 284                 $tpl->assign('load_all_js', 1);
 285                 $tpl->draw('head');
 286                 $tpl->draw('home');
 287             }
 288
 289             $tpl->draw('entries');
 290
 291             if ($full_head == 'yes') {
 292                 $tpl->draw('js');
 293                 $tpl->draw('footer');
 294             }
 295             break;
 296     }
 297 }
 298
 299 /**
 300  * Appel d'une action (mark as fav, archive, delete)
 301  */
 302 function action_to_do($action, $url, $id = 0)
 303 {
 304     global $store, $msg;
 305
 306     switch ($action)
 307     {
 308         case 'add':
 309             if ($url == '')
 310                 continue;
 311
 312             if (MyTool::isUrl($url)) {
 313                 if($parametres_url = prepare_url($url)) {
 314                     $store->add($url, $parametres_url['title'], $parametres_url['content']);
 315                     $last_id = $store->getLastId();
 316                     if (DOWNLOAD_PICTURES) {
 317                         $content = filtre_picture($parametres_url['content'], $url, $last_id);
 318                     }
 319                     $msg->add('s', 'the link has been added successfully');
 320                 }
 321             }
 322             else {
 323                 $msg->add('e', 'the link has been added successfully');
 324                 logm($url . ' is not a valid url');
 325             }
 326
 327             logm('add link ' . $url);
 328             break;
 329         case 'delete':
 330             remove_directory(ABS_PATH . $id);
 331             $store->deleteById($id);
 332             $msg->add('s', 'the link has been deleted successfully');
 333             logm('delete link #' . $id);
 334             break;
 335         case 'toggle_fav' :
 336             $store->favoriteById($id);
 337             $msg->add('s', 'the favorite toggle has been done successfully');
 338             logm('mark as favorite link #' . $id);
 339             break;
 340         case 'toggle_archive' :
 341             $store->archiveById($id);
 342             $msg->add('s', 'the archive toggle has been done successfully');
 343             logm('archive link #' . $id);
 344             break;
 345         default:
 346             break;
 347     }
 348 }
 349
 350 function logm($message)
 351 {
 352     $t = strval(date('Y/m/d_H:i:s')).' - '.$_SERVER["REMOTE_ADDR"].' - '.strval($message)."\n";
 353     file_put_contents('./log.txt',$t,FILE_APPEND);
 354 }