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 ' . $url->getUrl() .' entry deleted');
 180                         }
 181                     }
 182
 183                     // if there are tags, add them to the new article
 184                     if (isset($_GET['tags'])) {
 185                         $_POST['value'] = $_GET['tags'];
 186                         $_POST['entry_id'] = $last_id;
 187                         $this->action('add_tag', $url);
 188                     }
 189
 190                     $this->messages->add('s', _('the link has been added successfully'));
 191                 }
 192                 else {
 193                     $this->messages->add('e', _('error during insertion : the link wasn\'t added'));
 194                     Tools::logm('error during insertion : the link wasn\'t added ' . $url->getUrl());
 195                 }
 196
 197                 if ($autoclose == TRUE) {
 198                   Tools::redirect('?view=home');
 199                 } else {
 200                   Tools::redirect('?view=home&closewin=true');
 201                 }
 202                 break;
 203             case 'delete':
 204                 $msg = 'delete link #' . $id;
 205                 if ($this->store->deleteById($id, $this->user->getId())) {
 206                     if (DOWNLOAD_PICTURES) {
 207                         Picture::removeDirectory(ABS_PATH . $id);
 208                     }
 209                     $this->messages->add('s', _('the link has been deleted successfully'));
 210                 }
 211                 else {
 212                     $this->messages->add('e', _('the link wasn\'t deleted'));
 213                     $msg = 'error : can\'t delete link #' . $id;
 214                 }
 215                 Tools::logm($msg);
 216                 Tools::redirect('?');
 217                 break;
 218             case 'toggle_fav' :
 219                 $this->store->favoriteById($id, $this->user->getId());
 220                 Tools::logm('mark as favorite link #' . $id);
 221                 if ( Tools::isAjaxRequest() ) {
 222                   echo 1;
 223                   exit;
 224                 }
 225                 else {
 226                   Tools::redirect();
 227                 }
 228                 break;
 229             case 'toggle_archive' :
 230                 $this->store->archiveById($id, $this->user->getId());
 231                 Tools::logm('archive link #' . $id);
 232                 if ( Tools::isAjaxRequest() ) {
 233                   echo 1;
 234                   exit;
 235                 }
 236                 else {
 237                   Tools::redirect();
 238                 }
 239                 break;
 240             case 'archive_all' :
 241                 $this->store->archiveAll($this->user->getId());
 242                 Tools::logm('archive all links');
 243                 Tools::redirect();
 244                 break;
 245             case 'add_tag' :
 246                 if (isset($_GET['search'])) {
 247                     //when we want to apply a tag to a search
 248                     $tags = array($_GET['search']);
 249                     $allentry_ids = $this->store->search($tags[0], $this->user->getId());
 250                     $entry_ids = array();
 251                     foreach ($allentry_ids as $eachentry) {
 252                         $entry_ids[] = $eachentry[0];
 253                     }
 254                 } else { //add a tag to a single article
 255                     $tags = explode(',', $_POST['value']);
 256                     $entry_ids = array($_POST['entry_id']);
 257                 }
 258                 foreach($entry_ids as $entry_id) {
 259                     $entry = $this->store->retrieveOneById($entry_id, $this->user->getId());
 260                     if (!$entry) {
 261                         $this->messages->add('e', _('Article not found!'));
 262                         Tools::logm('error : article not found');
 263                         Tools::redirect();
 264                     }
 265                     //get all already set tags to preven duplicates
 266                     $already_set_tags = array();
 267                     $entry_tags = $this->store->retrieveTagsByEntry($entry_id);
 268                     foreach ($entry_tags as $tag) {
 269                       $already_set_tags[] = $tag['value'];
 270                     }
 271                     foreach($tags as $key => $tag_value) {
 272                         $value = trim($tag_value);
 273                         if ($value && !in_array($value, $already_set_tags)) {
 274                           $tag = $this->store->retrieveTagByValue($value);
 275                           if (is_null($tag)) {
 276                               # we create the tag
 277                               $tag = $this->store->createTag($value);
 278                               $sequence = '';
 279                               if (STORAGE == 'postgres') {
 280                                   $sequence = 'tags_id_seq';
 281                               }
 282                               $tag_id = $this->store->getLastId($sequence);
 283                           }
 284                           else {
 285                               $tag_id = $tag['id'];
 286                           }
 287
 288                           # we assign the tag to the article
 289                           $this->store->setTagToEntry($tag_id, $entry_id);
 290                         }
 291                     }
 292                 }
 293                 $this->messages->add('s', _('The tag has been applied successfully'));
 294                 Tools::logm('The tag has been applied successfully');
 295                 Tools::redirect();
 296                 break;
 297             case 'remove_tag' :
 298                 $tag_id = $_GET['tag_id'];
 299                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 300                 if (!$entry) {
 301                     $this->messages->add('e', _('Article not found!'));
 302                     Tools::logm('error : article not found');
 303                     Tools::redirect();
 304                 }
 305                 $this->store->removeTagForEntry($id, $tag_id);
 306                 Tools::logm('tag entry deleted');
 307                 if ($this->store->cleanUnusedTag($tag_id)) {
 308                     Tools::logm('tag deleted');
 309                 }
 310                 $this->messages->add('s', _('The tag has been successfully deleted'));
 311                 Tools::redirect();
 312                 break;
 313             default:
 314                 break;
 315         }
 316     }
 317
 318     function displayView($view, $id = 0)
 319     {
 320         $tpl_vars = array();
 321
 322         switch ($view)
 323         {
 324             case 'about':
 325                 break;
 326             case 'config':
 327                 $dev_infos = $this->_getPocheVersion('dev');
 328                 $dev = trim($dev_infos[0]);
 329                 $check_time_dev = date('d-M-Y H:i', $dev_infos[1]);
 330                 $prod_infos = $this->_getPocheVersion('prod');
 331                 $prod = trim($prod_infos[0]);
 332                 $check_time_prod = date('d-M-Y H:i', $prod_infos[1]);
 333                 $compare_dev = version_compare(POCHE, $dev);
 334                 $compare_prod = version_compare(POCHE, $prod);
 335                 $themes = $this->tpl->getInstalledThemes();
 336                 $languages = $this->language->getInstalledLanguages();
 337                 $token = $this->user->getConfigValue('token');
 338                 $http_auth = (isset($_SERVER['PHP_AUTH_USER']) || isset($_SERVER['REMOTE_USER'])) ? true : false;
 339                 $only_user = ($this->store->listUsers() > 1) ? false : true;
 340                 $tpl_vars = array(
 341                     'themes' => $themes,
 342                     'languages' => $languages,
 343                     'dev' => $dev,
 344                     'prod' => $prod,
 345                     'check_time_dev' => $check_time_dev,
 346                     'check_time_prod' => $check_time_prod,
 347                     'compare_dev' => $compare_dev,
 348                     'compare_prod' => $compare_prod,
 349                     'token' => $token,
 350                     'user_id' => $this->user->getId(),
 351                     'http_auth' => $http_auth,
 352                     'only_user' => $only_user
 353                 );
 354                 Tools::logm('config view');
 355                 break;
 356             case 'edit-tags':
 357                 # tags
 358                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 359                 if (!$entry) {
 360                     $this->messages->add('e', _('Article not found!'));
 361                     Tools::logm('error : article not found');
 362                     Tools::redirect();
 363                 }
 364                 $tags = $this->store->retrieveTagsByEntry($id);
 365                 $tpl_vars = array(
 366                     'entry_id' => $id,
 367                     'tags' => $tags,
 368                     'entry' => $entry,
 369                 );
 370                 break;
 371             case 'tags':
 372                 $token = $this->user->getConfigValue('token');
 373                 //if term is set - search tags for this term
 374                 $term = Tools::checkVar('term');
 375                 $tags = $this->store->retrieveAllTags($this->user->getId(), $term);
 376                 if (Tools::isAjaxRequest()) {
 377                   $result = array();
 378                   foreach ($tags as $tag) {
 379                     $result[] = $tag['value'];
 380                   }
 381                   echo json_encode($result);
 382                   exit;
 383                 }
 384                 $tpl_vars = array(
 385                     'token' => $token,
 386                     'user_id' => $this->user->getId(),
 387                     'tags' => $tags,
 388                 );
 389                 break;
 390             case 'search':
 391                 if (isset($_GET['search'])) {
 392                    $search = filter_var($_GET['search'], FILTER_SANITIZE_STRING);
 393                    $tpl_vars['entries'] = $this->store->search($search, $this->user->getId());
 394                    $count = count($tpl_vars['entries']);
 395                    $this->pagination->set_total($count);
 396                    $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 397                             $this->pagination->page_links('?view=' . $view . '?search=' . $search . '&sort=' . $_SESSION['sort'] . '&' ));
 398                    $tpl_vars['page_links'] = $page_links;
 399                    $tpl_vars['nb_results'] = $count;
 400                    $tpl_vars['searchterm'] = $search;
 401                 }
 402                 break;
 403             case 'view':
 404                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 405                 if ($entry != NULL) {
 406                     Tools::logm('view link #' . $id);
 407                     $content = $entry['content'];
 408                     if (function_exists('tidy_parse_string')) {
 409                         $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
 410                         $tidy->cleanRepair();
 411                         $content = $tidy->value;
 412                     }
 413
 414                     # flattr checking
 415                     $flattr = NULL;
 416                     if (FLATTR) {
 417                         $flattr = new FlattrItem();
 418                         $flattr->checkItem($entry['url'], $entry['id']);
 419                     }
 420
 421                     # tags
 422                     $tags = $this->store->retrieveTagsByEntry($entry['id']);
 423
 424                     $tpl_vars = array(
 425                         'entry' => $entry,
 426                         'content' => $content,
 427                         'flattr' => $flattr,
 428                         'tags' => $tags
 429                     );
 430                 }
 431                 else {
 432                     Tools::logm('error in view call : entry is null');
 433                 }
 434                 break;
 435             default: # home, favorites, archive and tag views
 436                 $tpl_vars = array(
 437                     'entries' => '',
 438                     'page_links' => '',
 439                     'nb_results' => '',
 440                     'listmode' => (isset($_COOKIE['listmode']) ? true : false),
 441                 );
 442
 443                 //if id is given - we retrieve entries by tag: id is tag id
 444                 if ($id) {
 445                   $tpl_vars['tag'] = $this->store->retrieveTag($id, $this->user->getId());
 446                   $tpl_vars['id'] = intval($id);
 447                 }
 448
 449                 $count = $this->store->getEntriesByViewCount($view, $this->user->getId(), $id);
 450
 451                 if ($count > 0) {
 452                     $this->pagination->set_total($count);
 453                     $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 454                         $this->pagination->page_links('?view=' . $view . '&sort=' . $_SESSION['sort'] . (($id)?'&id='.$id:'') . '&' ));
 455                     $tpl_vars['entries'] = $this->store->getEntriesByView($view, $this->user->getId(), $this->pagination->get_limit(), $id);
 456                     $tpl_vars['page_links'] = $page_links;
 457                     $tpl_vars['nb_results'] = $count;
 458                 }
 459                 Tools::logm('display ' . $view . ' view');
 460                 break;
 461         }
 462
 463         return $tpl_vars;
 464     }
 465
 466     /**
 467      * update the password of the current user.
 468      * if MODE_DEMO is TRUE, the password can't be updated.
 469      * @todo add the return value
 470      * @todo set the new password in function header like this updatePassword($newPassword)
 471      * @return boolean
 472      */
 473     public function updatePassword($password, $confirmPassword)
 474     {
 475         if (MODE_DEMO) {
 476             $this->messages->add('i', _('in demo mode, you can\'t update your password'));
 477             Tools::logm('in demo mode, you can\'t do this');
 478             Tools::redirect('?view=config');
 479         }
 480         else {
 481             if (isset($password) && isset($confirmPassword)) {
 482                 if ($password == $confirmPassword && !empty($password)) {
 483                     $this->messages->add('s', _('your password has been updated'));
 484                     $this->store->updatePassword($this->user->getId(), Tools::encodeString($password . $this->user->getUsername()));
 485                     Session::logout();
 486                     Tools::logm('password updated');
 487                     Tools::redirect();
 488                 }
 489                 else {
 490                     $this->messages->add('e', _('the two fields have to be filled & the password must be the same in the two fields'));
 491                     Tools::redirect('?view=config');
 492                 }
 493             }
 494         }
 495     }
 496
 497     /**
 498      * Get credentials from differents sources
 499      * It redirects the user to the $referer link
 500      *
 501      * @return array
 502      */
 503     private function credentials()
 504     {
 505         if (isset($_SERVER['PHP_AUTH_USER'])) {
 506             return array($_SERVER['PHP_AUTH_USER'], 'php_auth', true);
 507         }
 508         if (!empty($_POST['login']) && !empty($_POST['password'])) {
 509             return array($_POST['login'], $_POST['password'], false);
 510         }
 511         if (isset($_SERVER['REMOTE_USER'])) {
 512             return array($_SERVER['REMOTE_USER'], 'http_auth', true);
 513         }
 514
 515         return array(false, false, false);
 516     }
 517
 518     /**
 519      * checks if login & password are correct and save the user in session.
 520      * it redirects the user to the $referer link
 521      * @param  string $referer the url to redirect after login
 522      * @todo add the return value
 523      * @return boolean
 524      */
 525     public function login($referer)
 526     {
 527         list($login,$password,$isauthenticated)=$this->credentials();
 528         if($login === false || $password === false) {
 529             $this->messages->add('e', _('login failed: you have to fill all fields'));
 530             Tools::logm('login failed');
 531             Tools::redirect();
 532         }
 533         if (!empty($login) && !empty($password)) {
 534             $user = $this->store->login($login, Tools::encodeString($password . $login), $isauthenticated);
 535             if ($user != array()) {
 536                 # Save login into Session
 537                 $longlastingsession = isset($_POST['longlastingsession']);
 538                 $passwordTest = ($isauthenticated) ? $user['password'] : Tools::encodeString($password . $login);
 539                 Session::login($user['username'], $user['password'], $login, $passwordTest, $longlastingsession, array('poche_user' => new User($user)));
 540
 541                 # reload l10n
 542                 $language = $user['config']['language'];
 543                 @putenv('LC_ALL=' . $language);
 544                 setlocale(LC_ALL, $language);
 545                 bindtextdomain($language, LOCALE);
 546                 textdomain($language);
 547
 548                 $this->messages->add('s', _('welcome to your wallabag'));
 549                 Tools::logm('login successful');
 550                 Tools::redirect($referer);
 551             }
 552             $this->messages->add('e', _('login failed: bad login or password'));
 553             Tools::logm('login failed');
 554             Tools::redirect();
 555         }
 556     }
 557
 558     /**
 559      * log out the poche user. It cleans the session.
 560      * @todo add the return value
 561      * @return boolean
 562      */
 563     public function logout()
 564     {
 565         $this->user = array();
 566         Session::logout();
 567         Tools::logm('logout');
 568         Tools::redirect();
 569     }
 570
 571     /**
 572      * import datas into your wallabag
 573      * @return boolean
 574      */
 575
 576     public function import() {
 577
 578       if ( isset($_FILES['file']) && $_FILES['file']['tmp_name'] ) {
 579         Tools::logm('Import stated: parsing file');
 580
 581         // assume, that file is in json format
 582         $str_data = file_get_contents($_FILES['file']['tmp_name']);
 583         $data = json_decode($str_data, true);
 584
 585         if ( $data === null ) {
 586           //not json - assume html
 587           $html = new simple_html_dom();
 588           $html->load_file($_FILES['file']['tmp_name']);
 589           $data = array();
 590           $read = 0;
 591           foreach (array('ol','ul') as $list) {
 592             foreach ($html->find($list) as $ul) {
 593               foreach ($ul->find('li') as $li) {
 594                 $tmpEntry = array();
 595                   $a = $li->find('a');
 596                   $tmpEntry['url'] = $a[0]->href;
 597                   $tmpEntry['tags'] = $a[0]->tags;
 598                   $tmpEntry['is_read'] = $read;
 599                   if ($tmpEntry['url']) {
 600                     $data[] = $tmpEntry;
 601                   }
 602               }
 603               # the second <ol/ul> is for read links
 604               $read = ((sizeof($data) && $read)?0:1);
 605             }
 606           }
 607         }
 608
 609             // for readability structure
 610
 611             foreach($data as $record) {
 612                 if (is_array($record)) {
 613                     $data[] = $record;
 614                     foreach($record as $record2) {
 615                         if (is_array($record2)) {
 616                             $data[] = $record2;
 617                         }
 618                     }
 619                 }
 620             }
 621
 622             $urlsInserted = array(); //urls of articles inserted
 623             foreach($data as $record) {
 624                 $url = trim(isset($record['article__url']) ? $record['article__url'] : (isset($record['url']) ? $record['url'] : ''));
 625                 if ($url and !in_array($url, $urlsInserted)) {
 626                     $title = (isset($record['title']) ? $record['title'] : _('Untitled - Import - ') . '</a> <a href="./?import">' . _('click to finish import') . '</a><a>');
 627                     $body = (isset($record['content']) ? $record['content'] : '');
 628                     $isRead = (isset($record['is_read']) ? intval($record['is_read']) : (isset($record['archive']) ? intval($record['archive']) : 0));
 629                     $isFavorite = (isset($record['is_fav']) ? intval($record['is_fav']) : (isset($record['favorite']) ? intval($record['favorite']) : 0));
 630
 631                     // insert new record
 632
 633                     $id = $this->store->add($url, $title, $body, $this->user->getId() , $isFavorite, $isRead);
 634                     if ($id) {
 635                         $urlsInserted[] = $url; //add
 636                         if (isset($record['tags']) && trim($record['tags'])) {
 637
 638                             // @TODO: set tags
 639
 640                         }
 641                     }
 642                 }
 643             }
 644
 645             $i = sizeof($urlsInserted);
 646             if ($i > 0) {
 647                 $this->messages->add('s', _('Articles inserted: ') . $i . _('. Please note, that some may be marked as "read".'));
 648             }
 649
 650         Tools::logm('Import of articles finished: '.$i.' articles added (w/o content if not provided).');
 651       }
 652       else {
 653         $this->messages->add('s', _('Did you forget to select a file?'));
 654       }
 655         // file parsing finished here
 656         // now download article contents if any
 657         // check if we need to download any content
 658
 659         $recordsDownloadRequired = $this->store->retrieveUnfetchedEntriesCount($this->user->getId());
 660
 661         if ($recordsDownloadRequired == 0) {
 662
 663             // nothing to download
 664
 665             $this->messages->add('s', _('Import finished.'));
 666             Tools::logm('Import finished completely');
 667             Tools::redirect();
 668         }
 669         else {
 670
 671             // if just inserted - don't download anything, download will start in next reload
 672
 673             if (!isset($_FILES['file'])) {
 674
 675                 // download next batch
 676
 677                 Tools::logm('Fetching next batch of articles...');
 678                 $items = $this->store->retrieveUnfetchedEntries($this->user->getId() , IMPORT_LIMIT);
 679                 $purifier = $this->_getPurifier();
 680                 foreach($items as $item) {
 681                     $url = new Url(base64_encode($item['url']));
 682                     Tools::logm('Fetching article ' . $item['id']);
 683                     $content = Tools::getPageContent($url);
 684                     $title = (($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled'));
 685                     $body = (($content['rss']['channel']['item']['description'] != '') ? $content['rss']['channel']['item']['description'] : _('Undefined'));
 686
 687                     // clean content to prevent xss attack
 688
 689                     $title = $purifier->purify($title);
 690                     $body = $purifier->purify($body);
 691                     $this->store->updateContentAndTitle($item['id'], $title, $body, $this->user->getId());
 692                     Tools::logm('Article ' . $item['id'] . ' updated.');
 693                 }
 694             }
 695         }
 696
 697         return array(
 698             'includeImport' => true,
 699             'import' => array(
 700                 'recordsDownloadRequired' => $recordsDownloadRequired,
 701                 'recordsUnderDownload' => IMPORT_LIMIT,
 702                 'delay' => IMPORT_DELAY * 1000
 703             )
 704         );
 705     }
 706
 707     /**
 708      * export poche entries in json
 709      * @return json all poche entries
 710      */
 711     public function export()
 712     {
 713       $filename = "wallabag-export-".$this->user->getId()."-".date("Y-m-d").".json";
 714       header('Content-Disposition: attachment; filename='.$filename);
 715
 716       $entries = $this->store->retrieveAll($this->user->getId());
 717       echo $this->tpl->render('export.twig', array(
 718           'export' => Tools::renderJson($entries),
 719       ));
 720       Tools::logm('export view');
 721     }
 722
 723     /**
 724      * Checks online the latest version of poche and cache it
 725      * @param  string $which 'prod' or 'dev'
 726      * @return string        latest $which version
 727      */
 728     private function _getPocheVersion($which = 'prod') {
 729       $cache_file = CACHE . '/' . $which;
 730       $check_time = time();
 731
 732       # checks if the cached version file exists
 733       if (file_exists($cache_file) && (filemtime($cache_file) > (time() - 86400 ))) {
 734          $version = file_get_contents($cache_file);
 735          $check_time = filemtime($cache_file);
 736       } else {
 737          $version = file_get_contents('http://static.wallabag.org/versions/' . $which);
 738          file_put_contents($cache_file, $version, LOCK_EX);
 739       }
 740       return array($version, $check_time);
 741     }
 742
 743     /**
 744      * Update token for current user
 745      */
 746     public function updateToken()
 747     {
 748         $token = Tools::generateToken();
 749         $this->store->updateUserConfig($this->user->getId(), 'token', $token);
 750         $currentConfig = $_SESSION['poche_user']->config;
 751         $currentConfig['token'] = $token;
 752         $_SESSION['poche_user']->setConfig($currentConfig);
 753         Tools::redirect();
 754     }
 755
 756     /**
 757      * Generate RSS feeds for current user
 758      *
 759      * @param $token
 760      * @param $user_id
 761      * @param $tag_id
 762      * @param string $type
 763      */
 764     public function generateFeeds($token, $user_id, $tag_id, $type = 'home')
 765     {
 766         $allowed_types = array('home', 'fav', 'archive', 'tag');
 767         $config = $this->store->getConfigUser($user_id);
 768
 769         if ($config == null) {
 770             die(sprintf(_('User with this id (%d) does not exist.'), $user_id));
 771         }
 772
 773         if (!in_array($type, $allowed_types) || !isset($config['token']) || $token != $config['token']) {
 774             die(_('Uh, there is a problem while generating feed. Wrong token used?'));
 775         }
 776
 777         $feed = new FeedWriter(RSS2);
 778         $feed->setTitle('wallabag — ' . $type . ' feed');
 779         $feed->setLink(Tools::getPocheUrl());
 780         $feed->setChannelElement('pubDate', date(DATE_RSS , time()));
 781         $feed->setChannelElement('generator', 'wallabag');
 782         $feed->setDescription('wallabag ' . $type . ' elements');
 783
 784         if ($type == 'tag') {
 785             $entries = $this->store->retrieveEntriesByTag($tag_id, $user_id);
 786         }
 787         else {
 788             $entries = $this->store->getEntriesByView($type, $user_id);
 789         }
 790
 791         if (count($entries) > 0) {
 792             foreach ($entries as $entry) {
 793                 $newItem = $feed->createNewItem();
 794                 $newItem->setTitle($entry['title']);
 795                 $newItem->setSource(Tools::getPocheUrl() . '?view=view&amp;id=' . $entry['id']);
 796                 $newItem->setLink($entry['url']);
 797                 $newItem->setDate(time());
 798                 $newItem->setDescription($entry['content']);
 799                 $feed->addItem($newItem);
 800             }
 801         }
 802
 803         $feed->genarateFeed();
 804         exit;
 805     }
 806
 807
 808
 809     /**
 810      * Returns new purifier object with actual config
 811      */
 812     private function _getPurifier()
 813     {
 814         $config = HTMLPurifier_Config::createDefault();
 815         $config->set('Cache.SerializerPath', CACHE);
 816         $config->set('HTML.SafeIframe', true);
 817
 818         //allow YouTube, Vimeo and dailymotion videos
 819         $config->set('URI.SafeIframeRegexp', '%^(https?:)?//(www\.youtube(?:-nocookie)?\.com/embed/|player\.vimeo\.com/video/|www\.dailymotion\.com/embed/video/)%');
 820
 821         return new HTMLPurifier($config);
 822     }
 823
 824
 825 }