inc/poche/Poche.class.php

   1 <?php
   2 /**
   3  * wallabag, self hostable application allowing you to not miss any content anymore
   4  *
   5  * @category   wallabag
   6  * @author     Nicolas Lœuillet <nicolas@loeuillet.org>
   7  * @copyright  2013
   8  * @license    http://opensource.org/licenses/MIT see COPYING file
   9  */
  10
  11 class Poche
  12 {
  13     /**
  14      * @var User
  15      */
  16     public $user;
  17     /**
  18      * @var Database
  19      */
  20     public $store;
  21     /**
  22      * @var Template
  23      */
  24     public $tpl;
  25     /**
  26      * @var Language
  27      */
  28     public $language;
  29     /**
  30      * @var Routing
  31      */
  32     public $routing;
  33     /**
  34      * @var Messages
  35      */
  36     public $messages;
  37     /**
  38      * @var Paginator
  39      */
  40     public $pagination;
  41
  42     public function __construct()
  43     {
  44         $this->init();
  45     }
  46
  47     private function init()
  48     {
  49         Tools::initPhp();
  50
  51         $pocheUser = Session::getParam('poche_user');
  52
  53         if ($pocheUser && $pocheUser != array()) {
  54             $this->user = $pocheUser;
  55         } else {
  56             // fake user, just for install & login screens
  57             $this->user = new User();
  58             $this->user->setConfig($this->getDefaultConfig());
  59         }
  60
  61         $this->pagination   = new Paginator($this->user->getConfigValue('pager'), 'p');
  62         $this->language     = new Language($this);
  63         $this->tpl          = new Template($this);
  64         $this->store        = new Database();
  65         $this->messages     = new Messages();
  66         $this->routing      = new Routing($this);
  67     }
  68
  69     public function run()
  70     {
  71         $this->routing->run();
  72     }
  73
  74     /**
  75      * Creates a new user
  76      */
  77     public function createNewUser($username, $password, $email = "")
  78     {
  79         if (!empty($username) && !empty($password)){
  80             $newUsername = filter_var($username, FILTER_SANITIZE_STRING);
  81             $email = filter_var($email, FILTER_SANITIZE_STRING);
  82             if (!$this->store->userExists($newUsername)){
  83                 if ($this->store->install($newUsername, Tools::encodeString($password . $newUsername), $email)) {
  84                     Tools::logm('The new user ' . $newUsername . ' has been installed');
  85                     $this->messages->add('s', sprintf(_('The new user %s has been installed. Do you want to <a href="?logout">logout ?</a>'), $newUsername));
  86                     Tools::redirect();
  87                 }
  88                 else {
  89                     Tools::logm('error during adding new user');
  90                     Tools::redirect();
  91                 }
  92             }
  93             else {
  94                 $this->messages->add('e', sprintf(_('Error : An user with the name %s already exists !'), $newUsername));
  95                 Tools::logm('An user with the name ' . $newUsername . ' already exists !');
  96                 Tools::redirect();
  97             }
  98         }
  99     }
 100
 101     /**
 102      * Delete an existing user
 103      */
 104     public function deleteUser($password)
 105     {
 106         if ($this->store->listUsers() > 1) {
 107             if (Tools::encodeString($password . $this->user->getUsername()) == $this->store->getUserPassword($this->user->getId())) {
 108                 $username = $this->user->getUsername();
 109                 $this->store->deleteUserConfig($this->user->getId());
 110                 Tools::logm('The configuration for user '. $username .' has been deleted !');
 111                 $this->store->deleteTagsEntriesAndEntries($this->user->getId());
 112                 Tools::logm('The entries for user '. $username .' has been deleted !');
 113                 $this->store->deleteUser($this->user->getId());
 114                 Tools::logm('User '. $username .' has been completely deleted !');
 115                 Session::logout();
 116                 Tools::logm('logout');
 117                 Tools::redirect();
 118                 $this->messages->add('s', sprintf(_('User %s has been successfully deleted !'), $username));
 119             }
 120             else {
 121                 Tools::logm('Bad password !');
 122                 $this->messages->add('e', _('Error : The password is wrong !'));
 123             }
 124         }
 125         else {
 126             Tools::logm('Only user !');
 127             $this->messages->add('e', _('Error : You are the only user, you cannot delete your account !'));
 128         }
 129     }
 130
 131     public function getDefaultConfig()
 132     {
 133         return array(
 134             'pager' => PAGINATION,
 135             'language' => LANG,
 136             'theme' => DEFAULT_THEME
 137         );
 138     }
 139
 140     /**
 141      * Call action (mark as fav, archive, delete, etc.)
 142      */
 143     public function action($action, Url $url, $id = 0, $import = FALSE, $autoclose = FALSE, $tags = null)
 144     {
 145         switch ($action)
 146         {
 147             case 'add':
 148                 $content = Tools::getPageContent($url);
 149                 $title = ($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled');
 150                 $body = $content['rss']['channel']['item']['description'];
 151
 152                 // clean content from prevent xss attack
 153                 $purifier = $this->_getPurifier();
 154                 $title = $purifier->purify($title);
 155                 $body = $purifier->purify($body);
 156
 157                 //search for possible duplicate
 158                 $duplicate = NULL;
 159                 $duplicate = $this->store->retrieveOneByURL($url->getUrl(), $this->user->getId());
 160
 161                 $last_id = $this->store->add($url->getUrl(), $title, $body, $this->user->getId());
 162                 if ( $last_id ) {
 163                     Tools::logm('add link ' . $url->getUrl());
 164                     if (DOWNLOAD_PICTURES) {
 165                         $content = Picture::filterPicture($body, $url->getUrl(), $last_id);
 166                         Tools::logm('updating content article');
 167                         $this->store->updateContent($last_id, $content, $this->user->getId());
 168                     }
 169
 170                     if ($duplicate != NULL) {
 171                         // duplicate exists, so, older entry needs to be deleted (as new entry should go to the top of list), BUT favorite mark and tags should be preserved
 172                         Tools::logm('link ' . $url->getUrl() . ' is a duplicate');
 173                         // 1) - preserve tags and favorite, then drop old entry
 174                         $this->store->reassignTags($duplicate['id'], $last_id);
 175                         if ($duplicate['is_fav']) {
 176                           $this->store->favoriteById($last_id, $this->user->getId());
 177                         }
 178                         if ($this->store->deleteById($duplicate['id'], $this->user->getId())) {
 179                           Tools::logm('previous link ' . $url->getUrl() .' entry deleted');
 180                         }
 181                     }
 182
 183                     $this->messages->add('s', _('the link has been added successfully'));
 184                 }
 185                 else {
 186                     $this->messages->add('e', _('error during insertion : the link wasn\'t added'));
 187                     Tools::logm('error during insertion : the link wasn\'t added ' . $url->getUrl());
 188                 }
 189
 190                 if ($autoclose == TRUE) {
 191                   Tools::redirect('?view=home');
 192                 } else {
 193                   Tools::redirect('?view=home&closewin=true');
 194                 }
 195                 break;
 196             case 'delete':
 197                 $msg = 'delete link #' . $id;
 198                 if ($this->store->deleteById($id, $this->user->getId())) {
 199                     if (DOWNLOAD_PICTURES) {
 200                         Picture::removeDirectory(ABS_PATH . $id);
 201                     }
 202                     $this->messages->add('s', _('the link has been deleted successfully'));
 203                 }
 204                 else {
 205                     $this->messages->add('e', _('the link wasn\'t deleted'));
 206                     $msg = 'error : can\'t delete link #' . $id;
 207                 }
 208                 Tools::logm($msg);
 209                 Tools::redirect('?');
 210                 break;
 211             case 'toggle_fav' :
 212                 $this->store->favoriteById($id, $this->user->getId());
 213                 Tools::logm('mark as favorite link #' . $id);
 214                 if ( Tools::isAjaxRequest() ) {
 215                   echo 1;
 216                   exit;
 217                 }
 218                 else {
 219                   Tools::redirect();
 220                 }
 221                 break;
 222             case 'toggle_archive' :
 223                 $this->store->archiveById($id, $this->user->getId());
 224                 Tools::logm('archive link #' . $id);
 225                 if ( Tools::isAjaxRequest() ) {
 226                   echo 1;
 227                   exit;
 228                 }
 229                 else {
 230                   Tools::redirect();
 231                 }
 232                 break;
 233             case 'archive_all' :
 234                 $this->store->archiveAll($this->user->getId());
 235                 Tools::logm('archive all links');
 236                 Tools::redirect();
 237                 break;
 238             case 'add_tag' :
 239                 if (isset($_GET['search'])) {
 240                     //when we want to apply a tag to a search
 241                     $tags = array($_GET['search']);
 242                     $allentry_ids = $this->store->search($tags[0], $this->user->getId());
 243                     $entry_ids = array();
 244                     foreach ($allentry_ids as $eachentry) {
 245                         $entry_ids[] = $eachentry[0];
 246                     }
 247                 } else { //add a tag to a single article
 248                     $tags = explode(',', $_POST['value']);
 249                     $entry_ids = array($_POST['entry_id']);
 250                 }
 251                 foreach($entry_ids as $entry_id) {
 252                     $entry = $this->store->retrieveOneById($entry_id, $this->user->getId());
 253                     if (!$entry) {
 254                         $this->messages->add('e', _('Article not found!'));
 255                         Tools::logm('error : article not found');
 256                         Tools::redirect();
 257                     }
 258                     //get all already set tags to preven duplicates
 259                     $already_set_tags = array();
 260                     $entry_tags = $this->store->retrieveTagsByEntry($entry_id);
 261                     foreach ($entry_tags as $tag) {
 262                       $already_set_tags[] = $tag['value'];
 263                     }
 264                     foreach($tags as $key => $tag_value) {
 265                         $value = trim($tag_value);
 266                         if ($value && !in_array($value, $already_set_tags)) {
 267                           $tag = $this->store->retrieveTagByValue($value);
 268                           if (is_null($tag)) {
 269                               # we create the tag
 270                               $tag = $this->store->createTag($value);
 271                               $sequence = '';
 272                               if (STORAGE == 'postgres') {
 273                                   $sequence = 'tags_id_seq';
 274                               }
 275                               $tag_id = $this->store->getLastId($sequence);
 276                           }
 277                           else {
 278                               $tag_id = $tag['id'];
 279                           }
 280
 281                           # we assign the tag to the article
 282                           $this->store->setTagToEntry($tag_id, $entry_id);
 283                         }
 284                     }
 285                 }
 286                 $this->messages->add('s', _('The tag has been applied successfully'));
 287                 Tools::logm('The tag has been applied successfully');
 288                 Tools::redirect();
 289                 break;
 290             case 'remove_tag' :
 291                 $tag_id = $_GET['tag_id'];
 292                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 293                 if (!$entry) {
 294                     $this->messages->add('e', _('Article not found!'));
 295                     Tools::logm('error : article not found');
 296                     Tools::redirect();
 297                 }
 298                 $this->store->removeTagForEntry($id, $tag_id);
 299                 Tools::logm('tag entry deleted');
 300                 if ($this->store->cleanUnusedTag($tag_id)) {
 301                     Tools::logm('tag deleted');
 302                 }
 303                 $this->messages->add('s', _('The tag has been successfully deleted'));
 304                 Tools::redirect();
 305                 break;
 306             default:
 307                 break;
 308         }
 309     }
 310
 311     function displayView($view, $id = 0)
 312     {
 313         $tpl_vars = array();
 314
 315         switch ($view)
 316         {
 317             case 'about':
 318                 break;
 319             case 'config':
 320                 $dev_infos = $this->_getPocheVersion('dev');
 321                 $dev = trim($dev_infos[0]);
 322                 $check_time_dev = date('d-M-Y H:i', $dev_infos[1]);
 323                 $prod_infos = $this->_getPocheVersion('prod');
 324                 $prod = trim($prod_infos[0]);
 325                 $check_time_prod = date('d-M-Y H:i', $prod_infos[1]);
 326                 $compare_dev = version_compare(POCHE, $dev);
 327                 $compare_prod = version_compare(POCHE, $prod);
 328                 $themes = $this->tpl->getInstalledThemes();
 329                 $languages = $this->language->getInstalledLanguages();
 330                 $token = $this->user->getConfigValue('token');
 331                 $http_auth = (isset($_SERVER['PHP_AUTH_USER']) || isset($_SERVER['REMOTE_USER'])) ? true : false;
 332                 $only_user = ($this->store->listUsers() > 1) ? false : true;
 333                 $tpl_vars = array(
 334                     'themes' => $themes,
 335                     'languages' => $languages,
 336                     'dev' => $dev,
 337                     'prod' => $prod,
 338                     'check_time_dev' => $check_time_dev,
 339                     'check_time_prod' => $check_time_prod,
 340                     'compare_dev' => $compare_dev,
 341                     'compare_prod' => $compare_prod,
 342                     'token' => $token,
 343                     'user_id' => $this->user->getId(),
 344                     'http_auth' => $http_auth,
 345                     'only_user' => $only_user
 346                 );
 347                 Tools::logm('config view');
 348                 break;
 349             case 'edit-tags':
 350                 # tags
 351                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 352                 if (!$entry) {
 353                     $this->messages->add('e', _('Article not found!'));
 354                     Tools::logm('error : article not found');
 355                     Tools::redirect();
 356                 }
 357                 $tags = $this->store->retrieveTagsByEntry($id);
 358                 $tpl_vars = array(
 359                     'entry_id' => $id,
 360                     'tags' => $tags,
 361                     'entry' => $entry,
 362                 );
 363                 break;
 364             case 'tags':
 365                 $token = $this->user->getConfigValue('token');
 366                 //if term is set - search tags for this term
 367                 $term = Tools::checkVar('term');
 368                 $tags = $this->store->retrieveAllTags($this->user->getId(), $term);
 369                 if (Tools::isAjaxRequest()) {
 370                   $result = array();
 371                   foreach ($tags as $tag) {
 372                     $result[] = $tag['value'];
 373                   }
 374                   echo json_encode($result);
 375                   exit;
 376                 }
 377                 $tpl_vars = array(
 378                     'token' => $token,
 379                     'user_id' => $this->user->getId(),
 380                     'tags' => $tags,
 381                 );
 382                 break;
 383             case 'search':
 384                 if (isset($_GET['search'])) {
 385                    $search = filter_var($_GET['search'], FILTER_SANITIZE_STRING);
 386                    $tpl_vars['entries'] = $this->store->search($search, $this->user->getId());
 387                    $count = count($tpl_vars['entries']);
 388                    $this->pagination->set_total($count);
 389                    $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 390                             $this->pagination->page_links('?view=' . $view . '?search=' . $search . '&sort=' . $_SESSION['sort'] . '&' ));
 391                    $tpl_vars['page_links'] = $page_links;
 392                    $tpl_vars['nb_results'] = $count;
 393                    $tpl_vars['searchterm'] = $search;
 394                 }
 395                 break;
 396             case 'view':
 397                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 398                 if ($entry != NULL) {
 399                     Tools::logm('view link #' . $id);
 400                     $content = $entry['content'];
 401                     if (function_exists('tidy_parse_string')) {
 402                         $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
 403                         $tidy->cleanRepair();
 404                         $content = $tidy->value;
 405                     }
 406
 407                     # flattr checking
 408                     $flattr = new FlattrItem();
 409                     $flattr->checkItem($entry['url'], $entry['id']);
 410
 411                     # tags
 412                     $tags = $this->store->retrieveTagsByEntry($entry['id']);
 413
 414                     $tpl_vars = array(
 415                         'entry' => $entry,
 416                         'content' => $content,
 417                         'flattr' => $flattr,
 418                         'tags' => $tags
 419                     );
 420                 }
 421                 else {
 422                     Tools::logm('error in view call : entry is null');
 423                 }
 424                 break;
 425             default: # home, favorites, archive and tag views
 426                 $tpl_vars = array(
 427                     'entries' => '',
 428                     'page_links' => '',
 429                     'nb_results' => '',
 430                     'listmode' => (isset($_COOKIE['listmode']) ? true : false),
 431                 );
 432
 433                 //if id is given - we retrieve entries by tag: id is tag id
 434                 if ($id) {
 435                   $tpl_vars['tag'] = $this->store->retrieveTag($id, $this->user->getId());
 436                   $tpl_vars['id'] = intval($id);
 437                 }
 438
 439                 $count = $this->store->getEntriesByViewCount($view, $this->user->getId(), $id);
 440
 441                 if ($count > 0) {
 442                     $this->pagination->set_total($count);
 443                     $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 444                         $this->pagination->page_links('?view=' . $view . '&sort=' . $_SESSION['sort'] . (($id)?'&id='.$id:'') . '&' ));
 445                     $tpl_vars['entries'] = $this->store->getEntriesByView($view, $this->user->getId(), $this->pagination->get_limit(), $id);
 446                     $tpl_vars['page_links'] = $page_links;
 447                     $tpl_vars['nb_results'] = $count;
 448                     $tpl_vars['random'] = rand(1,$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                             // @TODO: set tags
 630
 631                         }
 632                     }
 633                 }
 634             }
 635
 636             $i = sizeof($urlsInserted);
 637             if ($i > 0) {
 638                 $this->messages->add('s', _('Articles inserted: ') . $i . _('. Please note, that some may be marked as "read".'));
 639             }
 640
 641         Tools::logm('Import of articles finished: '.$i.' articles added (w/o content if not provided).');
 642       }
 643       else {
 644         $this->messages->add('s', _('Did you forget to select a file?'));
 645       }
 646         // file parsing finished here
 647         // now download article contents if any
 648         // check if we need to download any content
 649
 650         $recordsDownloadRequired = $this->store->retrieveUnfetchedEntriesCount($this->user->getId());
 651
 652         if ($recordsDownloadRequired == 0) {
 653
 654             // nothing to download
 655
 656             $this->messages->add('s', _('Import finished.'));
 657             Tools::logm('Import finished completely');
 658             Tools::redirect();
 659         }
 660         else {
 661
 662             // if just inserted - don't download anything, download will start in next reload
 663
 664             if (!isset($_FILES['file'])) {
 665
 666                 // download next batch
 667
 668                 Tools::logm('Fetching next batch of articles...');
 669                 $items = $this->store->retrieveUnfetchedEntries($this->user->getId() , IMPORT_LIMIT);
 670                 $purifier = $this->_getPurifier();
 671                 foreach($items as $item) {
 672                     $url = new Url(base64_encode($item['url']));
 673                     Tools::logm('Fetching article ' . $item['id']);
 674                     $content = Tools::getPageContent($url);
 675                     $title = (($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled'));
 676                     $body = (($content['rss']['channel']['item']['description'] != '') ? $content['rss']['channel']['item']['description'] : _('Undefined'));
 677
 678                     // clean content to prevent xss attack
 679
 680                     $title = $purifier->purify($title);
 681                     $body = $purifier->purify($body);
 682                     $this->store->updateContentAndTitle($item['id'], $title, $body, $this->user->getId());
 683                     Tools::logm('Article ' . $item['id'] . ' updated.');
 684                 }
 685             }
 686         }
 687
 688         return array(
 689             'includeImport' => true,
 690             'import' => array(
 691                 'recordsDownloadRequired' => $recordsDownloadRequired,
 692                 'recordsUnderDownload' => IMPORT_LIMIT,
 693                 'delay' => IMPORT_DELAY * 1000
 694             )
 695         );
 696     }
 697
 698     /**
 699      * export poche entries in json
 700      * @return json all poche entries
 701      */
 702     public function export()
 703     {
 704       $filename = "wallabag-export-".$this->user->getId()."-".date("Y-m-d").".json";
 705       header('Content-Disposition: attachment; filename='.$filename);
 706
 707       $entries = $this->store->retrieveAll($this->user->getId());
 708       echo $this->tpl->render('export.twig', array(
 709           'export' => Tools::renderJson($entries),
 710       ));
 711       Tools::logm('export view');
 712     }
 713
 714     /**
 715      * Checks online the latest version of poche and cache it
 716      * @param  string $which 'prod' or 'dev'
 717      * @return string        latest $which version
 718      */
 719     private function _getPocheVersion($which = 'prod') {
 720       $cache_file = CACHE . '/' . $which;
 721       $check_time = time();
 722
 723       # checks if the cached version file exists
 724       if (file_exists($cache_file) && (filemtime($cache_file) > (time() - 86400 ))) {
 725          $version = file_get_contents($cache_file);
 726          $check_time = filemtime($cache_file);
 727       } else {
 728          $version = file_get_contents('http://static.wallabag.org/versions/' . $which);
 729          file_put_contents($cache_file, $version, LOCK_EX);
 730       }
 731       return array($version, $check_time);
 732     }
 733
 734     /**
 735      * Update token for current user
 736      */
 737     public function updateToken()
 738     {
 739         $token = Tools::generateToken();
 740         $this->store->updateUserConfig($this->user->getId(), 'token', $token);
 741         $currentConfig = $_SESSION['poche_user']->config;
 742         $currentConfig['token'] = $token;
 743         $_SESSION['poche_user']->setConfig($currentConfig);
 744         Tools::redirect();
 745     }
 746
 747     /**
 748      * Generate RSS feeds for current user
 749      *
 750      * @param $token
 751      * @param $user_id
 752      * @param $tag_id
 753      * @param string $type
 754      */
 755     public function generateFeeds($token, $user_id, $tag_id, $type = 'home')
 756     {
 757         $allowed_types = array('home', 'fav', 'archive', 'tag');
 758         $config = $this->store->getConfigUser($user_id);
 759
 760         if ($config == null) {
 761             die(sprintf(_('User with this id (%d) does not exist.'), $user_id));
 762         }
 763
 764         if (!in_array($type, $allowed_types) || !isset($config['token']) || $token != $config['token']) {
 765             die(_('Uh, there is a problem while generating feed. Wrong token used?'));
 766         }
 767
 768         $feed = new FeedWriter(RSS2);
 769         $feed->setTitle('wallabag — ' . $type . ' feed');
 770         $feed->setLink(Tools::getPocheUrl());
 771         $feed->setChannelElement('pubDate', date(DATE_RSS , time()));
 772         $feed->setChannelElement('generator', 'wallabag');
 773         $feed->setDescription('wallabag ' . $type . ' elements');
 774
 775         if ($type == 'tag') {
 776             $entries = $this->store->retrieveEntriesByTag($tag_id, $user_id);
 777         }
 778         else {
 779             $entries = $this->store->getEntriesByView($type, $user_id);
 780         }
 781
 782         if (count($entries) > 0) {
 783             foreach ($entries as $entry) {
 784                 $newItem = $feed->createNewItem();
 785                 $newItem->setTitle($entry['title']);
 786                 $newItem->setSource(Tools::getPocheUrl() . '?view=view&amp;id=' . $entry['id']);
 787                 $newItem->setLink($entry['url']);
 788                 $newItem->setDate(time());
 789                 $newItem->setDescription($entry['content']);
 790                 $feed->addItem($newItem);
 791             }
 792         }
 793
 794         $feed->genarateFeed();
 795         exit;
 796     }
 797
 798
 799
 800     /**
 801      * Returns new purifier object with actual config
 802      */
 803     private function _getPurifier()
 804     {
 805         $config = HTMLPurifier_Config::createDefault();
 806         $config->set('Cache.SerializerPath', CACHE);
 807         $config->set('HTML.SafeIframe', true);
 808
 809         //allow YouTube, Vimeo and dailymotion videos
 810         $config->set('URI.SafeIframeRegexp', '%^(https?:)?//(www\.youtube(?:-nocookie)?\.com/embed/|player\.vimeo\.com/video/|www\.dailymotion\.com/embed/video/)%');
 811
 812         return new HTMLPurifier($config);
 813     }
 814
 815
 816 }