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         // FOR SSL do not verified certificate
  43         curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
  44         curl_setopt($curl, CURLOPT_AUTOREFERER, TRUE );
  45
  46         // FeedBurner requires a proper USER-AGENT...
  47         curl_setopt($curl, CURL_HTTP_VERSION_1_1, true);
  48         curl_setopt($curl, CURLOPT_ENCODING, "gzip, deflate");
  49         curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
  50
  51         $data = curl_exec($curl);
  52
  53         $httpcode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
  54
  55         $httpcodeOK = isset($httpcode) and ($httpcode == 200 or $httpcode == 301);
  56
  57         curl_close($curl);
  58     } else {
  59
  60         // create http context and add timeout and user-agent
  61         $context = stream_context_create(array(
  62                                 'http'=>array('timeout' => $timeout,
  63                                     'header'=> "User-Agent: ".$useragent,       /*spoot Mozilla Firefox*/
  64                                     'follow_location' => true),
  65                                 // FOR SSL do not verified certificate
  66                                 'ssl' => array('verify_peer' => false,
  67                                         'allow_self_signed' => true)
  68                                 )
  69                             );
  70
  71         // only download page lesser than 4MB
  72         $data = @file_get_contents($url, false, $context, -1, 4000000); // We download at most 4 MB from source.
  73
  74         if(isset($http_response_header) and isset($http_response_header[0])) {
  75             $httpcodeOK = isset($http_response_header) and isset($http_response_header[0]) and ((strpos($http_response_header[0], '200 OK') !== FALSE) or (strpos($http_response_header[0], '301 Moved Permanently') !== FALSE));
  76         }
  77     }
  78
  79     // if response is not empty and response is OK
  80     if (isset($data) and isset($httpcodeOK) and $httpcodeOK ) {
  81
  82         // take charset of page and get it
  83         preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
  84
  85         // if meta tag is found
  86         if (!empty($meta[0])) {
  87             // retrieve encoding in $enc
  88             preg_match('#charset="?(.*)"#si', $meta[0], $enc);
  89
  90             // if charset is found set it otherwise, set it to utf-8
  91             $html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';
  92
  93         } else {
  94             $html_charset = 'utf-8';
  95             $enc[1] = '';
  96         }
  97
  98         // replace charset of url to charset of page
  99         $data = str_replace('charset='.$enc[1], 'charset='.$html_charset, $data);
 100
 101         return $data;
 102     }
 103     else {
 104         return FALSE;
 105     }
 106 }
 107
 108 /**
 109  * Préparation de l'URL avec récupération du contenu avant insertion en base
 110  */
 111 function prepare_url($url)
 112 {
 113     global $msg;
 114
 115     $parametres = array();
 116     $url        = html_entity_decode(trim($url));
 117
 118     // We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
 119     // from shaarli, by sebsauvage
 120     $i=strpos($url,'&utm_source='); if ($i!==false) $url=substr($url,0,$i);
 121     $i=strpos($url,'?utm_source='); if ($i!==false) $url=substr($url,0,$i);
 122     $i=strpos($url,'#xtor=RSS-'); if ($i!==false) $url=substr($url,0,$i);
 123
 124     $title = $url;
 125     $html = Encoding::toUTF8(get_external_file($url,15));
 126     // If get_external_file if not able to retrieve HTTPS content try the same URL with HTTP protocol
 127     if (!preg_match('!^https?://!i', $url) && (!isset($html) || strlen($html) <= 0)) {
 128         $url = 'http://' . $url;
 129         $html = Encoding::toUTF8(get_external_file($url,15));
 130     }
 131
 132     if (isset($html) and strlen($html) > 0)
 133     {
 134         $r = new Readability($html, $url);
 135
 136         $r->convertLinksToFootnotes = CONVERT_LINKS_FOOTNOTES;
 137         $r->revertForcedParagraphElements = REVERT_FORCED_PARAGRAPH_ELEMENTS;
 138
 139         if($r->init())
 140         {
 141             $content = $r->articleContent->innerHTML;
 142             $parametres['title'] = $r->articleTitle->innerHTML;
 143             $parametres['content'] = $content;
 144             return $parametres;
 145         }
 146     }
 147
 148     return FALSE;
 149 }
 150
 151 /**
 152  * On modifie les URLS des images dans le corps de l'article
 153  */
 154 function filtre_picture($content, $url, $id)
 155 {
 156     $matches = array();
 157     preg_match_all('#<\s*(img)[^>]+src="([^"]*)"[^>]*>#Si', $content, $matches, PREG_SET_ORDER);
 158     foreach($matches as $i => $link)
 159     {
 160         $link[1] = trim($link[1]);
 161         if (!preg_match('#^(([a-z]+://)|(\#))#', $link[1]) )
 162         {
 163             $absolute_path = get_absolute_link($link[2],$url);
 164             $filename = basename(parse_url($absolute_path, PHP_URL_PATH));
 165             $directory = create_assets_directory($id);
 166             $fullpath = $directory . '/' . $filename;
 167             download_pictures($absolute_path, $fullpath);
 168             $content = str_replace($matches[$i][2], $fullpath, $content);
 169         }
 170
 171     }
 172
 173     return $content;
 174 }
 175
 176 /**
 177  * Retourne le lien absolu
 178  */
 179 function get_absolute_link($relative_link, $url)
 180 {
 181     /* return if already absolute URL */
 182     if (parse_url($relative_link, PHP_URL_SCHEME) != '') return $relative_link;
 183
 184     /* queries and anchors */
 185     if ($relative_link[0]=='#' || $relative_link[0]=='?') return $url . $relative_link;
 186
 187     /* parse base URL and convert to local variables:
 188        $scheme, $host, $path */
 189     extract(parse_url($url));
 190
 191     /* remove non-directory element from path */
 192     $path = preg_replace('#/[^/]*$#', '', $path);
 193
 194     /* destroy path if relative url points to root */
 195     if ($relative_link[0] == '/') $path = '';
 196
 197     /* dirty absolute URL */
 198     $abs = $host . $path . '/' . $relative_link;
 199
 200     /* replace '//' or '/./' or '/foo/../' with '/' */
 201     $re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
 202     for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {}
 203
 204     /* absolute URL is ready! */
 205     return $scheme.'://'.$abs;
 206 }
 207
 208 /**
 209  * Téléchargement des images
 210  */
 211
 212 function download_pictures($absolute_path, $fullpath)
 213 {
 214     $rawdata = get_external_file($absolute_path);
 215
 216     if(file_exists($fullpath)) {
 217         unlink($fullpath);
 218     }
 219     $fp = fopen($fullpath, 'x');
 220     fwrite($fp, $rawdata);
 221     fclose($fp);
 222 }
 223
 224 /**
 225  * Crée un répertoire de médias pour l'article
 226  */
 227 function create_assets_directory($id)
 228 {
 229     $assets_path = ABS_PATH;
 230     if(!is_dir($assets_path)) {
 231         mkdir($assets_path, 0705);
 232     }
 233
 234     $article_directory = $assets_path . $id;
 235     if(!is_dir($article_directory)) {
 236         mkdir($article_directory, 0705);
 237     }
 238
 239     return $article_directory;
 240 }
 241
 242 /**
 243  * Suppression du répertoire d'images
 244  */
 245 function remove_directory($directory)
 246 {
 247     if(is_dir($directory)) {
 248         $files = array_diff(scandir($directory), array('.','..'));
 249         foreach ($files as $file) {
 250             (is_dir("$directory/$file")) ? remove_directory("$directory/$file") : unlink("$directory/$file");
 251         }
 252         return rmdir($directory);
 253     }
 254 }
 255
 256 function display_view($view, $id = 0, $full_head = 'yes')
 257 {
 258     global $tpl, $store, $msg;
 259
 260     switch ($view)
 261     {
 262         case 'export':
 263             $entries = $store->retrieveAll();
 264             $tpl->assign('export', myTool::renderJson($entries));
 265             $tpl->draw('export');
 266             logm('export view');
 267             break;
 268         case 'config':
 269             $tpl->assign('load_all_js', 0);
 270             $tpl->draw('head');
 271             $tpl->draw('home');
 272             $tpl->draw('config');
 273             $tpl->draw('js');
 274             $tpl->draw('footer');
 275             logm('config view');
 276             break;
 277         case 'view':
 278             $entry = $store->retrieveOneById($id);
 279
 280             if ($entry != NULL) {
 281                 $tpl->assign('id', $entry['id']);
 282                 $tpl->assign('url', $entry['url']);
 283                 $tpl->assign('title', $entry['title']);
 284                 $tpl->assign('content', $entry['content']);
 285                 $tpl->assign('is_fav', $entry['is_fav']);
 286                 $tpl->assign('is_read', $entry['is_read']);
 287                 $tpl->assign('load_all_js', 0);
 288                 $tpl->draw('view');
 289             }
 290             else {
 291                 logm('error in view call : entry is NULL');
 292             }
 293
 294             logm('view link #' . $id);
 295             break;
 296         default: # home view
 297             $entries = $store->getEntriesByView($view);
 298
 299             $tpl->assign('entries', $entries);
 300
 301             if ($full_head == 'yes') {
 302                 $tpl->assign('load_all_js', 1);
 303                 $tpl->draw('head');
 304                 $tpl->draw('home');
 305             }
 306
 307             $tpl->draw('entries');
 308
 309             if ($full_head == 'yes') {
 310                 $tpl->draw('js');
 311                 $tpl->draw('footer');
 312             }
 313             break;
 314     }
 315 }
 316
 317 /**
 318  * Appel d'une action (mark as fav, archive, delete)
 319  */
 320 function action_to_do($action, $url, $id = 0)
 321 {
 322     global $store, $msg;
 323
 324     switch ($action)
 325     {
 326         case 'add':
 327             if ($url == '')
 328                 continue;
 329
 330             if (MyTool::isUrl($url)) {
 331                 if($parametres_url = prepare_url($url)) {
 332                     if ($store->add($url, $parametres_url['title'], $parametres_url['content'])) {
 333                         $last_id = $store->getLastId();
 334                         if (DOWNLOAD_PICTURES) {
 335                             $content = filtre_picture($parametres_url['content'], $url, $last_id);
 336                         }
 337                         $msg->add('s', 'the link has been added successfully');
 338                     }
 339                     else {
 340                         $msg->add('e', 'error during insertion : the link wasn\'t added');
 341                     }
 342                 }
 343                 else {
 344                     $msg->add('e', 'error during url preparation : the link wasn\'t added');
 345                     logm('error during url preparation');
 346                 }
 347             }
 348             else {
 349                 $msg->add('e', 'error during url preparation : the link is not valid');
 350                 logm($url . ' is not a valid url');
 351             }
 352
 353             logm('add link ' . $url);
 354             break;
 355         case 'delete':
 356             if ($store->deleteById($id)) {
 357                 remove_directory(ABS_PATH . $id);
 358                 $msg->add('s', 'the link has been deleted successfully');
 359                 logm('delete link #' . $id);
 360             }
 361             else {
 362                 $msg->add('e', 'the link wasn\'t deleted');
 363                 logm('error : can\'t delete link #' . $id);
 364             }
 365             break;
 366         case 'toggle_fav' :
 367             $store->favoriteById($id);
 368             $msg->add('s', 'the favorite toggle has been done successfully');
 369             logm('mark as favorite link #' . $id);
 370             break;
 371         case 'toggle_archive' :
 372             $store->archiveById($id);
 373             $msg->add('s', 'the archive toggle has been done successfully');
 374             logm('archive link #' . $id);
 375             break;
 376         default:
 377             break;
 378     }
 379 }
 380
 381 function logm($message)
 382 {
 383     $t = strval(date('Y/m/d_H:i:s')).' - '.$_SERVER["REMOTE_ADDR"].' - '.strval($message)."\n";
 384     file_put_contents('./log.txt',$t,FILE_APPEND);
 385 }