inc/poche/Poche.class.php

   1 <?php
   2 /**
   3  * wallabag, self hostable application allowing you to not miss any content anymore
   4  *
   5  * @category   wallabag
   6  * @author     Nicolas Lœuillet <nicolas@loeuillet.org>
   7  * @copyright  2013
   8  * @license    http://opensource.org/licenses/MIT see COPYING file
   9  */
  10
  11 class Poche
  12 {
  13     /**
  14      * @var User
  15      */
  16     public $user;
  17     /**
  18      * @var Database
  19      */
  20     public $store;
  21     /**
  22      * @var Template
  23      */
  24     public $tpl;
  25     /**
  26      * @var Language
  27      */
  28     public $language;
  29     /**
  30      * @var Routing
  31      */
  32     public $routing;
  33     /**
  34      * @var Messages
  35      */
  36     public $messages;
  37     /**
  38      * @var Paginator
  39      */
  40     public $pagination;
  41
  42     public function __construct()
  43     {
  44         $this->init();
  45     }
  46
  47     private function init()
  48     {
  49         Tools::initPhp();
  50
  51         $pocheUser = Session::getParam('poche_user');
  52
  53         if ($pocheUser && $pocheUser != array()) {
  54             $this->user = $pocheUser;
  55         } else {
  56             // fake user, just for install & login screens
  57             $this->user = new User();
  58             $this->user->setConfig($this->getDefaultConfig());
  59         }
  60
  61         $this->pagination   = new Paginator($this->user->getConfigValue('pager'), 'p');
  62         $this->language     = new Language($this);
  63         $this->tpl          = new Template($this);
  64         $this->store        = new Database();
  65         $this->messages     = new Messages();
  66         $this->routing      = new Routing($this);
  67     }
  68
  69     public function run()
  70     {
  71         $this->routing->run();
  72     }
  73
  74     /**
  75      * Creates a new user
  76      */
  77     public function createNewUser($username, $password, $email = "")
  78     {
  79         if (!empty($username) && !empty($password)){
  80             $newUsername = filter_var($username, FILTER_SANITIZE_STRING);
  81             $email = filter_var($email, FILTER_SANITIZE_STRING);
  82             if (!$this->store->userExists($newUsername)){
  83                 if ($this->store->install($newUsername, Tools::encodeString($password . $newUsername), $email)) {
  84                     Tools::logm('The new user ' . $newUsername . ' has been installed');
  85                     $this->messages->add('s', sprintf(_('The new user %s has been installed. Do you want to <a href="?logout">logout ?</a>'), $newUsername));
  86                     Tools::redirect();
  87                 }
  88                 else {
  89                     Tools::logm('error during adding new user');
  90                     Tools::redirect();
  91                 }
  92             }
  93             else {
  94                 $this->messages->add('e', sprintf(_('Error : An user with the name %s already exists !'), $newUsername));
  95                 Tools::logm('An user with the name ' . $newUsername . ' already exists !');
  96                 Tools::redirect();
  97             }
  98         }
  99     }
 100
 101     /**
 102      * Delete an existing user
 103      */
 104     public function deleteUser($password)
 105     {
 106         if ($this->store->listUsers() > 1) {
 107             if (Tools::encodeString($password . $this->user->getUsername()) == $this->store->getUserPassword($this->user->getId())) {
 108                 $username = $this->user->getUsername();
 109                 $this->store->deleteUserConfig($this->user->getId());
 110                 Tools::logm('The configuration for user '. $username .' has been deleted !');
 111                 $this->store->deleteTagsEntriesAndEntries($this->user->getId());
 112                 Tools::logm('The entries for user '. $username .' has been deleted !');
 113                 $this->store->deleteUser($this->user->getId());
 114                 Tools::logm('User '. $username .' has been completely deleted !');
 115                 Session::logout();
 116                 Tools::logm('logout');
 117                 Tools::redirect();
 118                 $this->messages->add('s', sprintf(_('User %s has been successfully deleted !'), $username));
 119             }
 120             else {
 121                 Tools::logm('Bad password !');
 122                 $this->messages->add('e', _('Error : The password is wrong !'));
 123             }
 124         }
 125         else {
 126             Tools::logm('Only user !');
 127             $this->messages->add('e', _('Error : You are the only user, you cannot delete your account !'));
 128         }
 129     }
 130
 131     public function getDefaultConfig()
 132     {
 133         return array(
 134             'pager' => PAGINATION,
 135             'language' => LANG,
 136             'theme' => DEFAULT_THEME
 137         );
 138     }
 139
 140     /**
 141      * Call action (mark as fav, archive, delete, etc.)
 142      */
 143     public function action($action, Url $url, $id = 0, $import = FALSE, $autoclose = FALSE, $tags = null)
 144     {
 145         switch ($action)
 146         {
 147             case 'add':
 148                 $content = Tools::getPageContent($url);
 149                 $title = ($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled');
 150                 $body = $content['rss']['channel']['item']['description'];
 151
 152                 // clean content from prevent xss attack
 153                 $purifier = $this->_getPurifier();
 154                 $title = $purifier->purify($title);
 155                 $body = $purifier->purify($body);
 156
 157                 //search for possible duplicate
 158                 $duplicate = NULL;
 159                 $duplicate = $this->store->retrieveOneByURL($url->getUrl(), $this->user->getId());
 160
 161                 $last_id = $this->store->add($url->getUrl(), $title, $body, $this->user->getId());
 162                 if ( $last_id ) {
 163                     Tools::logm('add link ' . $url->getUrl());
 164                     if (DOWNLOAD_PICTURES) {
 165                         $content = Picture::filterPicture($body, $url->getUrl(), $last_id);
 166                         Tools::logm('updating content article');
 167                         $this->store->updateContent($last_id, $content, $this->user->getId());
 168                     }
 169
 170                     if ($duplicate != NULL) {
 171                         // duplicate exists, so, older entry needs to be deleted (as new entry should go to the top of list), BUT favorite mark and tags should be preserved
 172                         Tools::logm('link ' . $url->getUrl() . ' is a duplicate');
 173                         // 1) - preserve tags and favorite, then drop old entry
 174                         $this->store->reassignTags($duplicate['id'], $last_id);
 175                         if ($duplicate['is_fav']) {
 176                           $this->store->favoriteById($last_id, $this->user->getId());
 177                         }
 178                         if ($this->store->deleteById($duplicate['id'], $this->user->getId())) {
 179                           Tools::logm('previous link ' . $url->getUrl() .' entry deleted');
 180                         }
 181                     }
 182
 183                     $this->messages->add('s', _('the link has been added successfully'));
 184                 }
 185                 else {
 186                     $this->messages->add('e', _('error during insertion : the link wasn\'t added'));
 187                     Tools::logm('error during insertion : the link wasn\'t added ' . $url->getUrl());
 188                 }
 189
 190                 if ($autoclose == TRUE) {
 191                   Tools::redirect('?view=home');
 192                 } else {
 193                   Tools::redirect('?view=home&closewin=true');
 194                 }
 195                 break;
 196             case 'delete':
 197                 $msg = 'delete link #' . $id;
 198                 if ($this->store->deleteById($id, $this->user->getId())) {
 199                     if (DOWNLOAD_PICTURES) {
 200                         Picture::removeDirectory(ABS_PATH . $id);
 201                     }
 202                     $this->messages->add('s', _('the link has been deleted successfully'));
 203                 }
 204                 else {
 205                     $this->messages->add('e', _('the link wasn\'t deleted'));
 206                     $msg = 'error : can\'t delete link #' . $id;
 207                 }
 208                 Tools::logm($msg);
 209                 Tools::redirect('?');
 210                 break;
 211             case 'toggle_fav' :
 212                 $this->store->favoriteById($id, $this->user->getId());
 213                 Tools::logm('mark as favorite link #' . $id);
 214                 if ( Tools::isAjaxRequest() ) {
 215                   echo 1;
 216                   exit;
 217                 }
 218                 else {
 219                   Tools::redirect();
 220                 }
 221                 break;
 222             case 'toggle_archive' :
 223                 $this->store->archiveById($id, $this->user->getId());
 224                 Tools::logm('archive link #' . $id);
 225                 if ( Tools::isAjaxRequest() ) {
 226                   echo 1;
 227                   exit;
 228                 }
 229                 else {
 230                   Tools::redirect();
 231                 }
 232                 break;
 233             case 'archive_all' :
 234                 $this->store->archiveAll($this->user->getId());
 235                 Tools::logm('archive all links');
 236                 Tools::redirect();
 237                 break;
 238             case 'add_tag' :
 239                 if (isset($_GET['search'])) {
 240                     //when we want to apply a tag to a search
 241                     $tags = array($_GET['search']);
 242                     $allentry_ids = $this->store->search($tags[0], $this->user->getId());
 243                     $entry_ids = array();
 244                     foreach ($allentry_ids as $eachentry) {
 245                         $entry_ids[] = $eachentry[0];
 246                     }
 247                 } else { //add a tag to a single article
 248                     $tags = explode(',', $_POST['value']);
 249                     $entry_ids = array($_POST['entry_id']);
 250                 }
 251                 foreach($entry_ids as $entry_id) {
 252                     $entry = $this->store->retrieveOneById($entry_id, $this->user->getId());
 253                     if (!$entry) {
 254                         $this->messages->add('e', _('Article not found!'));
 255                         Tools::logm('error : article not found');
 256                         Tools::redirect();
 257                     }
 258                     //get all already set tags to preven duplicates
 259                     $already_set_tags = array();
 260                     $entry_tags = $this->store->retrieveTagsByEntry($entry_id);
 261                     foreach ($entry_tags as $tag) {
 262                       $already_set_tags[] = $tag['value'];
 263                     }
 264                     foreach($tags as $key => $tag_value) {
 265                         $value = trim($tag_value);
 266                         if ($value && !in_array($value, $already_set_tags)) {
 267                           $tag = $this->store->retrieveTagByValue($value);
 268                           if (is_null($tag)) {
 269                               # we create the tag
 270                               $tag = $this->store->createTag($value);
 271                               $sequence = '';
 272                               if (STORAGE == 'postgres') {
 273                                   $sequence = 'tags_id_seq';
 274                               }
 275                               $tag_id = $this->store->getLastId($sequence);
 276                           }
 277                           else {
 278                               $tag_id = $tag['id'];
 279                           }
 280
 281                           # we assign the tag to the article
 282                           $this->store->setTagToEntry($tag_id, $entry_id);
 283                         }
 284                     }
 285                 }
 286                 $this->messages->add('s', _('The tag has been applied successfully'));
 287                 Tools::logm('The tag has been applied successfully');
 288                 Tools::redirect();
 289                 break;
 290             case 'remove_tag' :
 291                 $tag_id = $_GET['tag_id'];
 292                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 293                 if (!$entry) {
 294                     $this->messages->add('e', _('Article not found!'));
 295                     Tools::logm('error : article not found');
 296                     Tools::redirect();
 297                 }
 298                 $this->store->removeTagForEntry($id, $tag_id);
 299                 Tools::logm('tag entry deleted');
 300                 if ($this->store->cleanUnusedTag($tag_id)) {
 301                     Tools::logm('tag deleted');
 302                 }
 303                 $this->messages->add('s', _('The tag has been successfully deleted'));
 304                 Tools::redirect();
 305                 break;
 306             default:
 307                 break;
 308         }
 309     }
 310
 311     function displayView($view, $id = 0)
 312     {
 313         $tpl_vars = array();
 314
 315         switch ($view)
 316         {
 317             case 'config':
 318                 $dev_infos = $this->_getPocheVersion('dev');
 319                 $dev = trim($dev_infos[0]);
 320                 $check_time_dev = date('d-M-Y H:i', $dev_infos[1]);
 321                 $prod_infos = $this->_getPocheVersion('prod');
 322                 $prod = trim($prod_infos[0]);
 323                 $check_time_prod = date('d-M-Y H:i', $prod_infos[1]);
 324                 $compare_dev = version_compare(POCHE, $dev);
 325                 $compare_prod = version_compare(POCHE, $prod);
 326                 $themes = $this->tpl->getInstalledThemes();
 327                 $languages = $this->language->getInstalledLanguages();
 328                 $token = $this->user->getConfigValue('token');
 329                 $http_auth = (isset($_SERVER['PHP_AUTH_USER']) || isset($_SERVER['REMOTE_USER'])) ? true : false;
 330                 $only_user = ($this->store->listUsers() > 1) ? false : true;
 331                 $tpl_vars = array(
 332                     'themes' => $themes,
 333                     'languages' => $languages,
 334                     'dev' => $dev,
 335                     'prod' => $prod,
 336                     'check_time_dev' => $check_time_dev,
 337                     'check_time_prod' => $check_time_prod,
 338                     'compare_dev' => $compare_dev,
 339                     'compare_prod' => $compare_prod,
 340                     'token' => $token,
 341                     'user_id' => $this->user->getId(),
 342                     'http_auth' => $http_auth,
 343                     'only_user' => $only_user
 344                 );
 345                 Tools::logm('config view');
 346                 break;
 347             case 'edit-tags':
 348                 # tags
 349                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 350                 if (!$entry) {
 351                     $this->messages->add('e', _('Article not found!'));
 352                     Tools::logm('error : article not found');
 353                     Tools::redirect();
 354                 }
 355                 $tags = $this->store->retrieveTagsByEntry($id);
 356                 $tpl_vars = array(
 357                     'entry_id' => $id,
 358                     'tags' => $tags,
 359                     'entry' => $entry,
 360                 );
 361                 break;
 362             case 'tags':
 363                 $token = $this->user->getConfigValue('token');
 364                 //if term is set - search tags for this term
 365                 $term = Tools::checkVar('term');
 366                 $tags = $this->store->retrieveAllTags($this->user->getId(), $term);
 367                 if (Tools::isAjaxRequest()) {
 368                   $result = array();
 369                   foreach ($tags as $tag) {
 370                     $result[] = $tag['value'];
 371                   }
 372                   echo json_encode($result);
 373                   exit;
 374                 }
 375                 $tpl_vars = array(
 376                     'token' => $token,
 377                     'user_id' => $this->user->getId(),
 378                     'tags' => $tags,
 379                 );
 380                 break;
 381             case 'search':
 382                 if (isset($_GET['search'])) {
 383                    $search = filter_var($_GET['search'], FILTER_SANITIZE_STRING);
 384                    $tpl_vars['entries'] = $this->store->search($search, $this->user->getId());
 385                    $count = count($tpl_vars['entries']);
 386                    $this->pagination->set_total($count);
 387                    $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 388                             $this->pagination->page_links('?view=' . $view . '?search=' . $search . '&sort=' . $_SESSION['sort'] . '&' ));
 389                    $tpl_vars['page_links'] = $page_links;
 390                    $tpl_vars['nb_results'] = $count;
 391                    $tpl_vars['search_term'] = $search;
 392                 }
 393                 break;
 394             case 'view':
 395                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 396                 if ($entry != NULL) {
 397                     Tools::logm('view link #' . $id);
 398                     $content = $entry['content'];
 399                     if (function_exists('tidy_parse_string')) {
 400                         $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
 401                         $tidy->cleanRepair();
 402                         $content = $tidy->value;
 403                     }
 404
 405                     # flattr checking
 406                     $flattr = new FlattrItem();
 407                     $flattr->checkItem($entry['url'], $entry['id']);
 408
 409                     # tags
 410                     $tags = $this->store->retrieveTagsByEntry($entry['id']);
 411
 412                     $tpl_vars = array(
 413                         'entry' => $entry,
 414                         'content' => $content,
 415                         'flattr' => $flattr,
 416                         'tags' => $tags
 417                     );
 418                 }
 419                 else {
 420                     Tools::logm('error in view call : entry is null');
 421                 }
 422                 break;
 423             default: # home, favorites, archive and tag views
 424                 $tpl_vars = array(
 425                     'entries' => '',
 426                     'page_links' => '',
 427                     'nb_results' => '',
 428                     'listmode' => (isset($_COOKIE['listmode']) ? true : false),
 429                 );
 430
 431                 //if id is given - we retrieve entries by tag: id is tag id
 432                 if ($id) {
 433                   $tpl_vars['tag'] = $this->store->retrieveTag($id, $this->user->getId());
 434                   $tpl_vars['id'] = intval($id);
 435                 }
 436
 437                 $count = $this->store->getEntriesByViewCount($view, $this->user->getId(), $id);
 438
 439                 if ($count > 0) {
 440                     $this->pagination->set_total($count);
 441                     $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 442                         $this->pagination->page_links('?view=' . $view . '&sort=' . $_SESSION['sort'] . (($id)?'&id='.$id:'') . '&' ));
 443                     $tpl_vars['entries'] = $this->store->getEntriesByView($view, $this->user->getId(), $this->pagination->get_limit(), $id);
 444                     $tpl_vars['page_links'] = $page_links;
 445                     $tpl_vars['nb_results'] = $count;
 446                 }
 447                 Tools::logm('display ' . $view . ' view');
 448                 break;
 449         }
 450
 451         return $tpl_vars;
 452     }
 453
 454     /**
 455      * update the password of the current user.
 456      * if MODE_DEMO is TRUE, the password can't be updated.
 457      * @todo add the return value
 458      * @todo set the new password in function header like this updatePassword($newPassword)
 459      * @return boolean
 460      */
 461     public function updatePassword($password, $confirmPassword)
 462     {
 463         if (MODE_DEMO) {
 464             $this->messages->add('i', _('in demo mode, you can\'t update your password'));
 465             Tools::logm('in demo mode, you can\'t do this');
 466             Tools::redirect('?view=config');
 467         }
 468         else {
 469             if (isset($password) && isset($confirmPassword)) {
 470                 if ($password == $confirmPassword && !empty($password)) {
 471                     $this->messages->add('s', _('your password has been updated'));
 472                     $this->store->updatePassword($this->user->getId(), Tools::encodeString($password . $this->user->getUsername()));
 473                     Session::logout();
 474                     Tools::logm('password updated');
 475                     Tools::redirect();
 476                 }
 477                 else {
 478                     $this->messages->add('e', _('the two fields have to be filled & the password must be the same in the two fields'));
 479                     Tools::redirect('?view=config');
 480                 }
 481             }
 482         }
 483     }
 484
 485     /**
 486      * Get credentials from differents sources
 487      * It redirects the user to the $referer link
 488      *
 489      * @return array
 490      */
 491     private function credentials()
 492     {
 493         if (isset($_SERVER['PHP_AUTH_USER'])) {
 494             return array($_SERVER['PHP_AUTH_USER'], 'php_auth', true);
 495         }
 496         if (!empty($_POST['login']) && !empty($_POST['password'])) {
 497             return array($_POST['login'], $_POST['password'], false);
 498         }
 499         if (isset($_SERVER['REMOTE_USER'])) {
 500             return array($_SERVER['REMOTE_USER'], 'http_auth', true);
 501         }
 502
 503         return array(false, false, false);
 504     }
 505
 506     /**
 507      * checks if login & password are correct and save the user in session.
 508      * it redirects the user to the $referer link
 509      * @param  string $referer the url to redirect after login
 510      * @todo add the return value
 511      * @return boolean
 512      */
 513     public function login($referer)
 514     {
 515         list($login,$password,$isauthenticated)=$this->credentials();
 516         if($login === false || $password === false) {
 517             $this->messages->add('e', _('login failed: you have to fill all fields'));
 518             Tools::logm('login failed');
 519             Tools::redirect();
 520         }
 521         if (!empty($login) && !empty($password)) {
 522             $user = $this->store->login($login, Tools::encodeString($password . $login), $isauthenticated);
 523             if ($user != array()) {
 524                 # Save login into Session
 525                 $longlastingsession = isset($_POST['longlastingsession']);
 526                 $passwordTest = ($isauthenticated) ? $user['password'] : Tools::encodeString($password . $login);
 527                 Session::login($user['username'], $user['password'], $login, $passwordTest, $longlastingsession, array('poche_user' => new User($user)));
 528                 $this->messages->add('s', _('welcome to your wallabag'));
 529                 Tools::logm('login successful');
 530                 Tools::redirect($referer);
 531             }
 532             $this->messages->add('e', _('login failed: bad login or password'));
 533             Tools::logm('login failed');
 534             Tools::redirect();
 535         }
 536     }
 537
 538     /**
 539      * log out the poche user. It cleans the session.
 540      * @todo add the return value
 541      * @return boolean
 542      */
 543     public function logout()
 544     {
 545         $this->user = array();
 546         Session::logout();
 547         Tools::logm('logout');
 548         Tools::redirect();
 549     }
 550
 551     /**
 552      * import datas into your wallabag
 553      * @return boolean
 554      */
 555     public function import()
 556     {
 557         if (isset($_FILES['file'])) {
 558             Tools::logm('Import stated: parsing file');
 559
 560             // assume, that file is in json format
 561
 562             $str_data = file_get_contents($_FILES['file']['tmp_name']);
 563             $data = json_decode($str_data, true);
 564             if ($data === null) {
 565
 566                 // not json - assume html
 567
 568                 $html = new simple_html_dom();
 569                 $html->load_file($_FILES['file']['tmp_name']);
 570                 $data = array();
 571                 $read = 0;
 572                 foreach(array('ol','ul') as $list) {
 573                     foreach($html->find($list) as $ul) {
 574                         foreach($ul->find('li') as $li) {
 575                             $tmpEntry = array();
 576                             $a = $li->find('a');
 577                             $tmpEntry['url'] = $a[0]->href;
 578                             $tmpEntry['tags'] = $a[0]->tags;
 579                             $tmpEntry['is_read'] = $read;
 580                             if ($tmpEntry['url']) {
 581                                 $data[] = $tmpEntry;
 582                             }
 583                         }
 584
 585                         // the second <ol/ul> is for read links
 586
 587                         $read = ((sizeof($data) && $read) ? 0 : 1);
 588                     }
 589                 }
 590             }
 591
 592             // for readability structure
 593
 594             foreach($data as $record) {
 595                 if (is_array($record)) {
 596                     $data[] = $record;
 597                     foreach($record as $record2) {
 598                         if (is_array($record2)) {
 599                             $data[] = $record2;
 600                         }
 601                     }
 602                 }
 603             }
 604
 605             $urlsInserted = array(); //urls of articles inserted
 606             foreach($data as $record) {
 607                 $url = trim(isset($record['article__url']) ? $record['article__url'] : (isset($record['url']) ? $record['url'] : ''));
 608                 if ($url and !in_array($url, $urlsInserted)) {
 609                     $title = (isset($record['title']) ? $record['title'] : _('Untitled - Import - ') . '</a> <a href="./?import">' . _('click to finish import') . '</a><a>');
 610                     $body = (isset($record['content']) ? $record['content'] : '');
 611                     $isRead = (isset($record['is_read']) ? intval($record['is_read']) : (isset($record['archive']) ? intval($record['archive']) : 0));
 612                     $isFavorite = (isset($record['is_fav']) ? intval($record['is_fav']) : (isset($record['favorite']) ? intval($record['favorite']) : 0));
 613
 614                     // insert new record
 615
 616                     $id = $this->store->add($url, $title, $body, $this->user->getId() , $isFavorite, $isRead);
 617                     if ($id) {
 618                         $urlsInserted[] = $url; //add
 619                         if (isset($record['tags']) && trim($record['tags'])) {
 620
 621                             // @TODO: set tags
 622
 623                         }
 624                     }
 625                 }
 626             }
 627
 628             $i = sizeof($urlsInserted);
 629             if ($i > 0) {
 630                 $this->messages->add('s', _('Articles inserted: ') . $i . _('. Please note, that some may be marked as "read".'));
 631             }
 632
 633             Tools::logm('Import of articles finished: ' . $i . ' articles added (w/o content if not provided).');
 634         }
 635
 636         // file parsing finished here
 637         // now download article contents if any
 638         // check if we need to download any content
 639
 640         $recordsDownloadRequired = $this->store->retrieveUnfetchedEntriesCount($this->user->getId());
 641
 642         if ($recordsDownloadRequired == 0) {
 643
 644             // nothing to download
 645
 646             $this->messages->add('s', _('Import finished.'));
 647             Tools::logm('Import finished completely');
 648             Tools::redirect();
 649         }
 650         else {
 651
 652             // if just inserted - don't download anything, download will start in next reload
 653
 654             if (!isset($_FILES['file'])) {
 655
 656                 // download next batch
 657
 658                 Tools::logm('Fetching next batch of articles...');
 659                 $items = $this->store->retrieveUnfetchedEntries($this->user->getId() , IMPORT_LIMIT);
 660                 $purifier = $this->_getPurifier();
 661                 foreach($items as $item) {
 662                     $url = new Url(base64_encode($item['url']));
 663                     Tools::logm('Fetching article ' . $item['id']);
 664                     $content = Tools::getPageContent($url);
 665                     $title = (($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled'));
 666                     $body = (($content['rss']['channel']['item']['description'] != '') ? $content['rss']['channel']['item']['description'] : _('Undefined'));
 667
 668                     // clean content to prevent xss attack
 669
 670                     $title = $purifier->purify($title);
 671                     $body = $purifier->purify($body);
 672                     $this->store->updateContentAndTitle($item['id'], $title, $body, $this->user->getId());
 673                     Tools::logm('Article ' . $item['id'] . ' updated.');
 674                 }
 675             }
 676         }
 677
 678         return array(
 679             'includeImport' => true,
 680             'import' => array(
 681                 'recordsDownloadRequired' => $recordsDownloadRequired,
 682                 'recordsUnderDownload' => IMPORT_LIMIT,
 683                 'delay' => IMPORT_DELAY * 1000
 684             )
 685         );
 686     }
 687
 688     /**
 689      * export poche entries in json
 690      * @return json all poche entries
 691      */
 692     public function export()
 693     {
 694       $filename = "wallabag-export-".$this->user->getId()."-".date("Y-m-d").".json";
 695       header('Content-Disposition: attachment; filename='.$filename);
 696
 697       $entries = $this->store->retrieveAll($this->user->getId());
 698       echo $this->tpl->render('export.twig', array(
 699           'export' => Tools::renderJson($entries),
 700       ));
 701       Tools::logm('export view');
 702     }
 703
 704     /**
 705      * Checks online the latest version of poche and cache it
 706      * @param  string $which 'prod' or 'dev'
 707      * @return string        latest $which version
 708      */
 709     private function _getPocheVersion($which = 'prod') {
 710       $cache_file = CACHE . '/' . $which;
 711       $check_time = time();
 712
 713       # checks if the cached version file exists
 714       if (file_exists($cache_file) && (filemtime($cache_file) > (time() - 86400 ))) {
 715          $version = file_get_contents($cache_file);
 716          $check_time = filemtime($cache_file);
 717       } else {
 718          $version = file_get_contents('http://static.wallabag.org/versions/' . $which);
 719          file_put_contents($cache_file, $version, LOCK_EX);
 720       }
 721       return array($version, $check_time);
 722     }
 723
 724     /**
 725      * Update token for current user
 726      */
 727     public function updateToken()
 728     {
 729         $token = Tools::generateToken();
 730         $this->store->updateUserConfig($this->user->getId(), 'token', $token);
 731         $currentConfig = $_SESSION['poche_user']->config;
 732         $currentConfig['token'] = $token;
 733         $_SESSION['poche_user']->setConfig($currentConfig);
 734         Tools::redirect();
 735     }
 736
 737     /**
 738      * Generate RSS feeds for current user
 739      *
 740      * @param $token
 741      * @param $user_id
 742      * @param $tag_id
 743      * @param string $type
 744      */
 745     public function generateFeeds($token, $user_id, $tag_id, $type = 'home')
 746     {
 747         $allowed_types = array('home', 'fav', 'archive', 'tag');
 748         $config = $this->store->getConfigUser($user_id);
 749
 750         if ($config == null) {
 751             die(sprintf(_('User with this id (%d) does not exist.'), $user_id));
 752         }
 753
 754         if (!in_array($type, $allowed_types) || $token != $config['token']) {
 755             die(_('Uh, there is a problem while generating feeds.'));
 756         }
 757
 758         $feed = new FeedWriter(RSS2);
 759         $feed->setTitle('wallabag — ' . $type . ' feed');
 760         $feed->setLink(Tools::getPocheUrl());
 761         $feed->setChannelElement('pubDate', date(DATE_RSS , time()));
 762         $feed->setChannelElement('generator', 'wallabag');
 763         $feed->setDescription('wallabag ' . $type . ' elements');
 764
 765         if ($type == 'tag') {
 766             $entries = $this->store->retrieveEntriesByTag($tag_id, $user_id);
 767         }
 768         else {
 769             $entries = $this->store->getEntriesByView($type, $user_id);
 770         }
 771
 772         if (count($entries) > 0) {
 773             foreach ($entries as $entry) {
 774                 $newItem = $feed->createNewItem();
 775                 $newItem->setTitle($entry['title']);
 776                 $newItem->setSource(Tools::getPocheUrl() . '?view=view&amp;id=' . $entry['id']);
 777                 $newItem->setLink($entry['url']);
 778                 $newItem->setDate(time());
 779                 $newItem->setDescription($entry['content']);
 780                 $feed->addItem($newItem);
 781             }
 782         }
 783
 784         $feed->genarateFeed();
 785         exit;
 786     }
 787
 788
 789
 790     /**
 791      * Returns new purifier object with actual config
 792      */
 793     private function _getPurifier()
 794     {
 795         $config = HTMLPurifier_Config::createDefault();
 796         $config->set('Cache.SerializerPath', CACHE);
 797         $config->set('HTML.SafeIframe', true);
 798
 799         //allow YouTube, Vimeo and dailymotion videos
 800         $config->set('URI.SafeIframeRegexp', '%^(https?:)?//(www\.youtube(?:-nocookie)?\.com/embed/|player\.vimeo\.com/video/|www\.dailymotion\.com/embed/video/)%');
 801
 802         return new HTMLPurifier($config);
 803     }
 804
 805
 806 }