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