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