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                 return $last_id;
 196                 break;
 197             case 'delete':
 198                 $msg = 'delete link #' . $id;
 199                 if ($this->store->deleteById($id, $this->user->getId())) {
 200                     if (DOWNLOAD_PICTURES) {
 201                         Picture::removeDirectory(ABS_PATH . $id);
 202                     }
 203                     $this->messages->add('s', _('the link has been deleted successfully'));
 204                 }
 205                 else {
 206                     $this->messages->add('e', _('the link wasn\'t deleted'));
 207                     $msg = 'error : can\'t delete link #' . $id;
 208                 }
 209                 Tools::logm($msg);
 210                 Tools::redirect('?');
 211                 break;
 212             case 'toggle_fav' :
 213                 $this->store->favoriteById($id, $this->user->getId());
 214                 Tools::logm('mark as favorite link #' . $id);
 215                 if ( Tools::isAjaxRequest() ) {
 216                   echo 1;
 217                   exit;
 218                 }
 219                 else {
 220                   Tools::redirect();
 221                 }
 222                 break;
 223             case 'toggle_archive' :
 224                 $this->store->archiveById($id, $this->user->getId());
 225                 Tools::logm('archive link #' . $id);
 226                 if ( Tools::isAjaxRequest() ) {
 227                   echo 1;
 228                   exit;
 229                 }
 230                 else {
 231                   Tools::redirect();
 232                 }
 233                 break;
 234             case 'archive_all' :
 235                 $this->store->archiveAll($this->user->getId());
 236                 Tools::logm('archive all links');
 237                 Tools::redirect();
 238                 break;
 239             case 'add_tag' :
 240                 if (isset($_GET['search'])) {
 241                     //when we want to apply a tag to a search
 242                     $tags = array($_GET['search']);
 243                     $allentry_ids = $this->store->search($tags[0], $this->user->getId());
 244                     $entry_ids = array();
 245                     foreach ($allentry_ids as $eachentry) {
 246                         $entry_ids[] = $eachentry[0];
 247                     }
 248                 } else { //add a tag to a single article
 249                     $tags = explode(',', $_POST['value']);
 250                     $entry_ids = array($_POST['entry_id']);
 251                 }
 252                 foreach($entry_ids as $entry_id) {
 253                     $entry = $this->store->retrieveOneById($entry_id, $this->user->getId());
 254                     if (!$entry) {
 255                         $this->messages->add('e', _('Article not found!'));
 256                         Tools::logm('error : article not found');
 257                         Tools::redirect();
 258                     }
 259                     //get all already set tags to preven duplicates
 260                     $already_set_tags = array();
 261                     $entry_tags = $this->store->retrieveTagsByEntry($entry_id);
 262                     foreach ($entry_tags as $tag) {
 263                       $already_set_tags[] = $tag['value'];
 264                     }
 265                     foreach($tags as $key => $tag_value) {
 266                         $value = trim($tag_value);
 267                         if ($value && !in_array($value, $already_set_tags)) {
 268                           $tag = $this->store->retrieveTagByValue($value);
 269                           if (is_null($tag)) {
 270                               # we create the tag
 271                               $tag = $this->store->createTag($value);
 272                               $sequence = '';
 273                               if (STORAGE == 'postgres') {
 274                                   $sequence = 'tags_id_seq';
 275                               }
 276                               $tag_id = $this->store->getLastId($sequence);
 277                           }
 278                           else {
 279                               $tag_id = $tag['id'];
 280                           }
 281
 282                           # we assign the tag to the article
 283                           $this->store->setTagToEntry($tag_id, $entry_id);
 284                         }
 285                     }
 286                 }
 287                 $this->messages->add('s', _('The tag has been applied successfully'));
 288                 Tools::logm('The tag has been applied successfully');
 289                 Tools::redirect();
 290                 break;
 291             case 'remove_tag' :
 292                 $tag_id = $_GET['tag_id'];
 293                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 294                 if (!$entry) {
 295                     $this->messages->add('e', _('Article not found!'));
 296                     Tools::logm('error : article not found');
 297                     Tools::redirect();
 298                 }
 299                 $this->store->removeTagForEntry($id, $tag_id);
 300                 Tools::logm('tag entry deleted');
 301                 if ($this->store->cleanUnusedTag($tag_id)) {
 302                     Tools::logm('tag deleted');
 303                 }
 304                 $this->messages->add('s', _('The tag has been successfully deleted'));
 305                 Tools::redirect();
 306                 break;
 307             default:
 308                 break;
 309         }
 310     }
 311
 312     function displayView($view, $id = 0)
 313     {
 314         $tpl_vars = array();
 315
 316         switch ($view)
 317         {
 318             case 'about':
 319                 break;
 320             case 'config':
 321                 $dev_infos = $this->_getPocheVersion('dev');
 322                 $dev = trim($dev_infos[0]);
 323                 $check_time_dev = date('d-M-Y H:i', $dev_infos[1]);
 324                 $prod_infos = $this->_getPocheVersion('prod');
 325                 $prod = trim($prod_infos[0]);
 326                 $check_time_prod = date('d-M-Y H:i', $prod_infos[1]);
 327                 $compare_dev = version_compare(POCHE, $dev);
 328                 $compare_prod = version_compare(POCHE, $prod);
 329                 $themes = $this->tpl->getInstalledThemes();
 330                 $languages = $this->language->getInstalledLanguages();
 331                 $token = $this->user->getConfigValue('token');
 332                 $http_auth = (isset($_SERVER['PHP_AUTH_USER']) || isset($_SERVER['REMOTE_USER'])) ? true : false;
 333                 $only_user = ($this->store->listUsers() > 1) ? false : true;
 334                 $tpl_vars = array(
 335                     'themes' => $themes,
 336                     'languages' => $languages,
 337                     'dev' => $dev,
 338                     'prod' => $prod,
 339                     'check_time_dev' => $check_time_dev,
 340                     'check_time_prod' => $check_time_prod,
 341                     'compare_dev' => $compare_dev,
 342                     'compare_prod' => $compare_prod,
 343                     'token' => $token,
 344                     'user_id' => $this->user->getId(),
 345                     'http_auth' => $http_auth,
 346                     'only_user' => $only_user
 347                 );
 348                 Tools::logm('config view');
 349                 break;
 350             case 'edit-tags':
 351                 # tags
 352                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 353                 if (!$entry) {
 354                     $this->messages->add('e', _('Article not found!'));
 355                     Tools::logm('error : article not found');
 356                     Tools::redirect();
 357                 }
 358                 $tags = $this->store->retrieveTagsByEntry($id);
 359                 $tpl_vars = array(
 360                     'entry_id' => $id,
 361                     'tags' => $tags,
 362                     'entry' => $entry,
 363                 );
 364                 break;
 365             case 'tags':
 366                 $token = $this->user->getConfigValue('token');
 367                 //if term is set - search tags for this term
 368                 $term = Tools::checkVar('term');
 369                 $tags = $this->store->retrieveAllTags($this->user->getId(), $term);
 370                 if (Tools::isAjaxRequest()) {
 371                   $result = array();
 372                   foreach ($tags as $tag) {
 373                     $result[] = $tag['value'];
 374                   }
 375                   echo json_encode($result);
 376                   exit;
 377                 }
 378                 $tpl_vars = array(
 379                     'token' => $token,
 380                     'user_id' => $this->user->getId(),
 381                     'tags' => $tags,
 382                 );
 383                 break;
 384             case 'search':
 385                 if (isset($_GET['search'])) {
 386                    $search = filter_var($_GET['search'], FILTER_SANITIZE_STRING);
 387                    $tpl_vars['entries'] = $this->store->search($search, $this->user->getId());
 388                    $count = count($tpl_vars['entries']);
 389                    $this->pagination->set_total($count);
 390                    $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 391                             $this->pagination->page_links('?view=' . $view . '?search=' . $search . '&sort=' . $_SESSION['sort'] . '&' ));
 392                    $tpl_vars['page_links'] = $page_links;
 393                    $tpl_vars['nb_results'] = $count;
 394                    $tpl_vars['searchterm'] = $search;
 395                 }
 396                 break;
 397             case 'view':
 398                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 399                 if ($entry != NULL) {
 400                     Tools::logm('view link #' . $id);
 401                     $content = $entry['content'];
 402                     if (function_exists('tidy_parse_string')) {
 403                         $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
 404                         $tidy->cleanRepair();
 405                         $content = $tidy->value;
 406                     }
 407
 408                     # flattr checking
 409                     $flattr = new FlattrItem();
 410                     $flattr->checkItem($entry['url'], $entry['id']);
 411
 412                     # tags
 413                     $tags = $this->store->retrieveTagsByEntry($entry['id']);
 414
 415                     $tpl_vars = array(
 416                         'entry' => $entry,
 417                         'content' => $content,
 418                         'flattr' => $flattr,
 419                         'tags' => $tags
 420                     );
 421                 }
 422                 else {
 423                     Tools::logm('error in view call : entry is null');
 424                 }
 425                 break;
 426             default: # home, favorites, archive and tag views
 427                 $tpl_vars = array(
 428                     'entries' => '',
 429                     'page_links' => '',
 430                     'nb_results' => '',
 431                     'listmode' => (isset($_COOKIE['listmode']) ? true : false),
 432                 );
 433
 434                 //if id is given - we retrieve entries by tag: id is tag id
 435                 if ($id) {
 436                   $tpl_vars['tag'] = $this->store->retrieveTag($id, $this->user->getId());
 437                   $tpl_vars['id'] = intval($id);
 438                 }
 439
 440                 $count = $this->store->getEntriesByViewCount($view, $this->user->getId(), $id);
 441
 442                 if ($count > 0) {
 443                     $this->pagination->set_total($count);
 444                     $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 445                         $this->pagination->page_links('?view=' . $view . '&sort=' . $_SESSION['sort'] . (($id)?'&id='.$id:'') . '&' ));
 446                     $tpl_vars['entries'] = $this->store->getEntriesByView($view, $this->user->getId(), $this->pagination->get_limit(), $id);
 447                     $tpl_vars['page_links'] = $page_links;
 448                     $tpl_vars['nb_results'] = $count;
 449                 }
 450                 Tools::logm('display ' . $view . ' view');
 451                 break;
 452         }
 453
 454         return $tpl_vars;
 455     }
 456
 457     /**
 458      * update the password of the current user.
 459      * if MODE_DEMO is TRUE, the password can't be updated.
 460      * @todo add the return value
 461      * @todo set the new password in function header like this updatePassword($newPassword)
 462      * @return boolean
 463      */
 464     public function updatePassword($password, $confirmPassword)
 465     {
 466         if (MODE_DEMO) {
 467             $this->messages->add('i', _('in demo mode, you can\'t update your password'));
 468             Tools::logm('in demo mode, you can\'t do this');
 469             Tools::redirect('?view=config');
 470         }
 471         else {
 472             if (isset($password) && isset($confirmPassword)) {
 473                 if ($password == $confirmPassword && !empty($password)) {
 474                     $this->messages->add('s', _('your password has been updated'));
 475                     $this->store->updatePassword($this->user->getId(), Tools::encodeString($password . $this->user->getUsername()));
 476                     Session::logout();
 477                     Tools::logm('password updated');
 478                     Tools::redirect();
 479                 }
 480                 else {
 481                     $this->messages->add('e', _('the two fields have to be filled & the password must be the same in the two fields'));
 482                     Tools::redirect('?view=config');
 483                 }
 484             }
 485         }
 486     }
 487
 488     /**
 489      * Get credentials from differents sources
 490      * It redirects the user to the $referer link
 491      *
 492      * @return array
 493      */
 494     private function credentials()
 495     {
 496         if (isset($_SERVER['PHP_AUTH_USER'])) {
 497             return array($_SERVER['PHP_AUTH_USER'], 'php_auth', true);
 498         }
 499         if (!empty($_POST['login']) && !empty($_POST['password'])) {
 500             return array($_POST['login'], $_POST['password'], false);
 501         }
 502         if (isset($_SERVER['REMOTE_USER'])) {
 503             return array($_SERVER['REMOTE_USER'], 'http_auth', true);
 504         }
 505
 506         return array(false, false, false);
 507     }
 508
 509     /**
 510      * checks if login & password are correct and save the user in session.
 511      * it redirects the user to the $referer link
 512      * @param  string $referer the url to redirect after login
 513      * @todo add the return value
 514      * @return boolean
 515      */
 516     public function login($referer)
 517     {
 518         list($login,$password,$isauthenticated)=$this->credentials();
 519         if($login === false || $password === false) {
 520             $this->messages->add('e', _('login failed: you have to fill all fields'));
 521             Tools::logm('login failed');
 522             Tools::redirect();
 523         }
 524         if (!empty($login) && !empty($password)) {
 525             $user = $this->store->login($login, Tools::encodeString($password . $login), $isauthenticated);
 526             if ($user != array()) {
 527                 # Save login into Session
 528                 $longlastingsession = isset($_POST['longlastingsession']);
 529                 $passwordTest = ($isauthenticated) ? $user['password'] : Tools::encodeString($password . $login);
 530                 Session::login($user['username'], $user['password'], $login, $passwordTest, $longlastingsession, array('poche_user' => new User($user)));
 531
 532                 # reload l10n
 533                 $language = $user['config']['language'];
 534                 @putenv('LC_ALL=' . $language);
 535                 setlocale(LC_ALL, $language);
 536                 bindtextdomain($language, LOCALE);
 537                 textdomain($language);
 538
 539                 $this->messages->add('s', _('welcome to your wallabag'));
 540                 Tools::logm('login successful');
 541                 Tools::redirect($referer);
 542             }
 543             $this->messages->add('e', _('login failed: bad login or password'));
 544             Tools::logm('login failed');
 545             Tools::redirect();
 546         }
 547     }
 548
 549     /**
 550      * log out the poche user. It cleans the session.
 551      * @todo add the return value
 552      * @return boolean
 553      */
 554     public function logout()
 555     {
 556         $this->user = array();
 557         Session::logout();
 558         Tools::logm('logout');
 559         Tools::redirect();
 560     }
 561
 562     /**
 563      * import datas into your wallabag
 564      * @return boolean
 565      */
 566
 567     public function import() {
 568
 569       if ( isset($_FILES['file']) && $_FILES['file']['tmp_name'] ) {
 570         Tools::logm('Import stated: parsing file');
 571
 572         // assume, that file is in json format
 573         $str_data = file_get_contents($_FILES['file']['tmp_name']);
 574         $data = json_decode($str_data, true);
 575
 576         if ( $data === null ) {
 577           //not json - assume html
 578           $html = new simple_html_dom();
 579           $html->load_file($_FILES['file']['tmp_name']);
 580           $data = array();
 581           $read = 0;
 582           foreach (array('ol','ul') as $list) {
 583             foreach ($html->find($list) as $ul) {
 584               foreach ($ul->find('li') as $li) {
 585                 $tmpEntry = array();
 586                   $a = $li->find('a');
 587                   $tmpEntry['url'] = $a[0]->href;
 588                   $tmpEntry['tags'] = $a[0]->tags;
 589                   $tmpEntry['is_read'] = $read;
 590                   if ($tmpEntry['url']) {
 591                     $data[] = $tmpEntry;
 592                   }
 593               }
 594               # the second <ol/ul> is for read links
 595               $read = ((sizeof($data) && $read)?0:1);
 596             }
 597           }
 598         }
 599
 600             // for readability structure
 601
 602             foreach($data as $record) {
 603                 if (is_array($record)) {
 604                     $data[] = $record;
 605                     foreach($record as $record2) {
 606                         if (is_array($record2)) {
 607                             $data[] = $record2;
 608                         }
 609                     }
 610                 }
 611             }
 612
 613             $urlsInserted = array(); //urls of articles inserted
 614             foreach($data as $record) {
 615                 $url = trim(isset($record['article__url']) ? $record['article__url'] : (isset($record['url']) ? $record['url'] : ''));
 616                 if ($url and !in_array($url, $urlsInserted)) {
 617                     $title = (isset($record['title']) ? $record['title'] : _('Untitled - Import - ') . '</a> <a href="./?import">' . _('click to finish import') . '</a><a>');
 618                     $body = (isset($record['content']) ? $record['content'] : '');
 619                     $isRead = (isset($record['is_read']) ? intval($record['is_read']) : (isset($record['archive']) ? intval($record['archive']) : 0));
 620                     $isFavorite = (isset($record['is_fav']) ? intval($record['is_fav']) : (isset($record['favorite']) ? intval($record['favorite']) : 0));
 621
 622                     // insert new record
 623
 624                     $id = $this->store->add($url, $title, $body, $this->user->getId() , $isFavorite, $isRead);
 625                     if ($id) {
 626                         $urlsInserted[] = $url; //add
 627                         if (isset($record['tags']) && trim($record['tags'])) {
 628
 629                             $tags = explode(' ', $record['tags']);
 630                                                         foreach($tags as $tag) {
 631                                                                 $entry_id = $id;
 632                                                                 $tag_id = $this->store->retrieveTagByValue($tag);
 633                                                                 if ($tag_id) {
 634                                                                         $this->store->setTagToEntry($tag_id['id'], $entry_id);
 635                                                                 } else {
 636                                                                         $this->store->createTag($tag);
 637                                                                         $tag_id = $this->store->retrieveTagByValue($tag);
 638                                                                         $this->store->setTagToEntry($tag_id['id'], $entry_id);
 639                                                                 }
 640                                                         }
 641
 642                         }
 643                     }
 644                 }
 645             }
 646
 647             $i = sizeof($urlsInserted);
 648             if ($i > 0) {
 649                 $this->messages->add('s', _('Articles inserted: ') . $i . _('. Please note, that some may be marked as "read".'));
 650             }
 651
 652         Tools::logm('Import of articles finished: '.$i.' articles added (w/o content if not provided).');
 653       }
 654       else {
 655         $this->messages->add('s', _('Did you forget to select a file?'));
 656       }
 657         // file parsing finished here
 658         // now download article contents if any
 659         // check if we need to download any content
 660
 661         $recordsDownloadRequired = $this->store->retrieveUnfetchedEntriesCount($this->user->getId());
 662
 663         if ($recordsDownloadRequired == 0) {
 664
 665             // nothing to download
 666
 667             $this->messages->add('s', _('Import finished.'));
 668             Tools::logm('Import finished completely');
 669             Tools::redirect();
 670         }
 671         else {
 672
 673             // if just inserted - don't download anything, download will start in next reload
 674
 675             if (!isset($_FILES['file'])) {
 676
 677                 // download next batch
 678
 679                 Tools::logm('Fetching next batch of articles...');
 680                 $items = $this->store->retrieveUnfetchedEntries($this->user->getId() , IMPORT_LIMIT);
 681                 $purifier = $this->_getPurifier();
 682                 foreach($items as $item) {
 683                     $url = new Url(base64_encode($item['url']));
 684                     Tools::logm('Fetching article ' . $item['id']);
 685                     $content = Tools::getPageContent($url);
 686                     $title = (($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled'));
 687                     $body = (($content['rss']['channel']['item']['description'] != '') ? $content['rss']['channel']['item']['description'] : _('Undefined'));
 688
 689                     // clean content to prevent xss attack
 690
 691                     $title = $purifier->purify($title);
 692                     $body = $purifier->purify($body);
 693                     $this->store->updateContentAndTitle($item['id'], $title, $body, $this->user->getId());
 694                     Tools::logm('Article ' . $item['id'] . ' updated.');
 695                 }
 696             }
 697         }
 698
 699         return array(
 700             'includeImport' => true,
 701             'import' => array(
 702                 'recordsDownloadRequired' => $recordsDownloadRequired,
 703                 'recordsUnderDownload' => IMPORT_LIMIT,
 704                 'delay' => IMPORT_DELAY * 1000
 705             )
 706         );
 707     }
 708
 709     /**
 710      * export poche entries in json
 711      * @return json all poche entries
 712      */
 713     public function export()
 714     {
 715       $filename = "wallabag-export-".$this->user->getId()."-".date("Y-m-d").".json";
 716       header('Content-Disposition: attachment; filename='.$filename);
 717
 718       $entries = $this->store->retrieveAll($this->user->getId());
 719       echo $this->tpl->render('export.twig', array(
 720           'export' => Tools::renderJson($entries),
 721       ));
 722       Tools::logm('export view');
 723     }
 724
 725     /**
 726      * Checks online the latest version of poche and cache it
 727      * @param  string $which 'prod' or 'dev'
 728      * @return string        latest $which version
 729      */
 730     private function _getPocheVersion($which = 'prod') {
 731       $cache_file = CACHE . '/' . $which;
 732       $check_time = time();
 733
 734       # checks if the cached version file exists
 735       if (file_exists($cache_file) && (filemtime($cache_file) > (time() - 86400 ))) {
 736          $version = file_get_contents($cache_file);
 737          $check_time = filemtime($cache_file);
 738       } else {
 739          $version = file_get_contents('http://static.wallabag.org/versions/' . $which);
 740          file_put_contents($cache_file, $version, LOCK_EX);
 741       }
 742       return array($version, $check_time);
 743     }
 744
 745     /**
 746      * Update token for current user
 747      */
 748     public function updateToken()
 749     {
 750         $token = Tools::generateToken();
 751         $this->store->updateUserConfig($this->user->getId(), 'token', $token);
 752         $currentConfig = $_SESSION['poche_user']->config;
 753         $currentConfig['token'] = $token;
 754         $_SESSION['poche_user']->setConfig($currentConfig);
 755         Tools::redirect();
 756     }
 757
 758     /**
 759      * Generate RSS feeds for current user
 760      *
 761      * @param $token
 762      * @param $user_id
 763      * @param $tag_id
 764      * @param string $type
 765      */
 766     public function generateFeeds($token, $user_id, $tag_id, $type = 'home')
 767     {
 768         $allowed_types = array('home', 'fav', 'archive', 'tag');
 769         $config = $this->store->getConfigUser($user_id);
 770
 771         if ($config == null) {
 772             die(sprintf(_('User with this id (%d) does not exist.'), $user_id));
 773         }
 774
 775         if (!in_array($type, $allowed_types) || !isset($config['token']) || $token != $config['token']) {
 776             die(_('Uh, there is a problem while generating feed. Wrong token used?'));
 777         }
 778
 779         $feed = new FeedWriter(RSS2);
 780         $feed->setTitle('wallabag — ' . $type . ' feed');
 781         $feed->setLink(Tools::getPocheUrl());
 782         $feed->setChannelElement('pubDate', date(DATE_RSS , time()));
 783         $feed->setChannelElement('generator', 'wallabag');
 784         $feed->setDescription('wallabag ' . $type . ' elements');
 785
 786         if ($type == 'tag') {
 787             $entries = $this->store->retrieveEntriesByTag($tag_id, $user_id);
 788         }
 789         else {
 790             $entries = $this->store->getEntriesByView($type, $user_id);
 791         }
 792
 793         if (count($entries) > 0) {
 794             foreach ($entries as $entry) {
 795                 $newItem = $feed->createNewItem();
 796                 $newItem->setTitle($entry['title']);
 797                 $newItem->setSource(Tools::getPocheUrl() . '?view=view&amp;id=' . $entry['id']);
 798                 $newItem->setLink($entry['url']);
 799                 $newItem->setDate(time());
 800                 $newItem->setDescription($entry['content']);
 801                 $feed->addItem($newItem);
 802             }
 803         }
 804
 805         $feed->genarateFeed();
 806         exit;
 807     }
 808
 809
 810
 811     /**
 812      * Returns new purifier object with actual config
 813      */
 814     private function _getPurifier()
 815     {
 816         $config = HTMLPurifier_Config::createDefault();
 817         $config->set('Cache.SerializerPath', CACHE);
 818         $config->set('HTML.SafeIframe', true);
 819
 820         //allow YouTube, Vimeo and dailymotion videos
 821         $config->set('URI.SafeIframeRegexp', '%^(https?:)?//(www\.youtube(?:-nocookie)?\.com/embed/|player\.vimeo\.com/video/|www\.dailymotion\.com/embed/video/)%');
 822
 823         return new HTMLPurifier($config);
 824     }
 825
 826
 827 }