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