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://www.wtfpl.net/ see COPYING file
   9  */
  10
  11 class Poche
  12 {
  13     public static $canRenderTemplates = true;
  14     public static $configFileAvailable = true;
  15
  16     public $user;
  17     public $store;
  18     public $tpl;
  19     public $messages;
  20     public $pagination;
  21
  22     private $currentTheme = '';
  23     private $currentLanguage = '';
  24     private $notInstalledMessage = array();
  25
  26     private $language_names = array(
  27       'cs_CZ.utf8' => 'čeština',
  28       'de_DE.utf8' => 'German',
  29       'en_EN.utf8' => 'English',
  30       'es_ES.utf8' => 'Español',
  31       'fa_IR.utf8' => 'فارسی',
  32       'fr_FR.utf8' => 'Français',
  33       'it_IT.utf8' => 'Italiano',
  34       'pl_PL.utf8' => 'Polski',
  35       'pt_BR.utf8' => 'Português (Brasil)',
  36       'ru_RU.utf8' => 'Pусский',
  37       'sl_SI.utf8' => 'Slovenščina',
  38       'uk_UA.utf8' => 'Українська',
  39     );
  40     public function __construct()
  41     {
  42         if ($this->configFileIsAvailable()) {
  43             $this->init();
  44         }
  45
  46         if ($this->themeIsInstalled()) {
  47             $this->initTpl();
  48         }
  49
  50         if ($this->systemIsInstalled()) {
  51             $this->store = new Database();
  52             $this->messages = new Messages();
  53             # installation
  54             if (! $this->store->isInstalled()) {
  55                 $this->install();
  56             }
  57             $this->store->checkTags();
  58         }
  59     }
  60
  61     private function init()
  62     {
  63         Tools::initPhp();
  64
  65         if (isset($_SESSION['poche_user']) && $_SESSION['poche_user'] != array()) {
  66             $this->user = $_SESSION['poche_user'];
  67         } else {
  68             # fake user, just for install & login screens
  69             $this->user = new User();
  70             $this->user->setConfig($this->getDefaultConfig());
  71         }
  72
  73         # l10n
  74         $language = $this->user->getConfigValue('language');
  75         putenv('LC_ALL=' . $language);
  76         setlocale(LC_ALL, $language);
  77         bindtextdomain($language, LOCALE);
  78         textdomain($language);
  79
  80         # Pagination
  81         $this->pagination = new Paginator($this->user->getConfigValue('pager'), 'p');
  82
  83         # Set up theme
  84         $themeDirectory = $this->user->getConfigValue('theme');
  85
  86         if ($themeDirectory === false) {
  87             $themeDirectory = DEFAULT_THEME;
  88         }
  89
  90         $this->currentTheme = $themeDirectory;
  91
  92         # Set up language
  93         $languageDirectory = $this->user->getConfigValue('language');
  94
  95         if ($languageDirectory === false) {
  96             $languageDirectory = DEFAULT_THEME;
  97         }
  98
  99         $this->currentLanguage = $languageDirectory;
 100     }
 101
 102     public function configFileIsAvailable() {
 103         if (! self::$configFileAvailable) {
 104             $this->notInstalledMessage[] = 'You have to rename inc/poche/config.inc.php.new to inc/poche/config.inc.php.';
 105
 106             return false;
 107         }
 108
 109         return true;
 110     }
 111
 112     public function themeIsInstalled() {
 113         $passTheme = TRUE;
 114         # Twig is an absolute requirement for Poche to function. Abort immediately if the Composer installer hasn't been run yet
 115         if (! self::$canRenderTemplates) {
 116             $this->notInstalledMessage[] = 'Twig does not seem to be installed. Please initialize the Composer installation to automatically fetch dependencies. You can also download <a href="http://wllbg.org/vendor">vendor.zip</a> and extract it in your wallabag folder.';
 117             $passTheme = FALSE;
 118         }
 119
 120         if (! is_writable(CACHE)) {
 121             $this->notInstalledMessage[] = 'You don\'t have write access on cache directory.';
 122
 123             self::$canRenderTemplates = false;
 124
 125             $passTheme = FALSE;
 126         }
 127
 128         # Check if the selected theme and its requirements are present
 129         $theme = $this->getTheme();
 130
 131         if ($theme != '' && ! is_dir(THEME . '/' . $theme)) {
 132             $this->notInstalledMessage[] = 'The currently selected theme (' . $theme . ') does not seem to be properly installed (Missing directory: ' . THEME . '/' . $theme . ')';
 133
 134             self::$canRenderTemplates = false;
 135
 136             $passTheme = FALSE;
 137         }
 138
 139         $themeInfo = $this->getThemeInfo($theme);
 140         if (isset($themeInfo['requirements']) && is_array($themeInfo['requirements'])) {
 141             foreach ($themeInfo['requirements'] as $requiredTheme) {
 142                 if (! is_dir(THEME . '/' . $requiredTheme)) {
 143                     $this->notInstalledMessage[] = 'The required "' . $requiredTheme . '" theme is missing for the current theme (' . $theme . ')';
 144
 145                     self::$canRenderTemplates = false;
 146
 147                     $passTheme = FALSE;
 148                 }
 149             }
 150         }
 151
 152         if (!$passTheme) {
 153             return FALSE;
 154         }
 155
 156
 157         return true;
 158     }
 159
 160     /**
 161      * all checks before installation.
 162      * @todo move HTML to template
 163      * @return boolean
 164      */
 165     public function systemIsInstalled()
 166     {
 167         $msg = TRUE;
 168
 169         $configSalt = defined('SALT') ? constant('SALT') : '';
 170
 171         if (empty($configSalt)) {
 172             $this->notInstalledMessage[] = 'You have not yet filled in the SALT value in the config.inc.php file.';
 173             $msg = FALSE;
 174         }
 175         if (STORAGE == 'sqlite' && ! file_exists(STORAGE_SQLITE)) {
 176             Tools::logm('sqlite file doesn\'t exist');
 177             $this->notInstalledMessage[] = 'sqlite file doesn\'t exist, you can find it in install folder. Copy it in /db folder.';
 178             $msg = FALSE;
 179         }
 180         if (is_dir(ROOT . '/install') && ! DEBUG_POCHE) {
 181             $this->notInstalledMessage[] = 'you have to delete the /install folder before using poche.';
 182             $msg = FALSE;
 183         }
 184         if (STORAGE == 'sqlite' && ! is_writable(STORAGE_SQLITE)) {
 185             Tools::logm('you don\'t have write access on sqlite file');
 186             $this->notInstalledMessage[] = 'You don\'t have write access on sqlite file.';
 187             $msg = FALSE;
 188         }
 189
 190         if (! $msg) {
 191             return false;
 192         }
 193
 194         return true;
 195     }
 196
 197     public function getNotInstalledMessage() {
 198         return $this->notInstalledMessage;
 199     }
 200
 201     private function initTpl()
 202     {
 203         $loaderChain = new Twig_Loader_Chain();
 204         $theme = $this->getTheme();
 205
 206         # add the current theme as first to the loader chain so Twig will look there first for overridden template files
 207         try {
 208             $loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . $theme));
 209         } catch (Twig_Error_Loader $e) {
 210             # @todo isInstalled() should catch this, inject Twig later
 211             die('The currently selected theme (' . $theme . ') does not seem to be properly installed (' . THEME . '/' . $theme .' is missing)');
 212         }
 213
 214         # add all required themes to the loader chain
 215         $themeInfo = $this->getThemeInfo($theme);
 216         if (isset($themeInfo['requirements']) && is_array($themeInfo['requirements'])) {
 217             foreach ($themeInfo['requirements'] as $requiredTheme) {
 218                 try {
 219                     $loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . $requiredTheme));
 220                 } catch (Twig_Error_Loader $e) {
 221                     # @todo isInstalled() should catch this, inject Twig later
 222                     die('The required "' . $requiredTheme . '" theme is missing for the current theme (' . $theme . ')');
 223                 }
 224             }
 225         }
 226
 227         if (DEBUG_POCHE) {
 228             $twigParams = array();
 229         } else {
 230             $twigParams = array('cache' => CACHE);
 231         }
 232
 233         $this->tpl = new Twig_Environment($loaderChain, $twigParams);
 234         $this->tpl->addExtension(new Twig_Extensions_Extension_I18n());
 235
 236         # filter to display domain name of an url
 237         $filter = new Twig_SimpleFilter('getDomain', 'Tools::getDomain');
 238         $this->tpl->addFilter($filter);
 239
 240         # filter for reading time
 241         $filter = new Twig_SimpleFilter('getReadingTime', 'Tools::getReadingTime');
 242         $this->tpl->addFilter($filter);
 243     }
 244
 245     private function install()
 246     {
 247         Tools::logm('poche still not installed');
 248         echo $this->tpl->render('install.twig', array(
 249             'token' => Session::getToken(),
 250             'theme' => $this->getTheme(),
 251             'poche_url' => Tools::getPocheUrl()
 252         ));
 253         if (isset($_GET['install'])) {
 254             if (($_POST['password'] == $_POST['password_repeat'])
 255                 && $_POST['password'] != "" && $_POST['login'] != "") {
 256                 # let's rock, install poche baby !
 257                 if ($this->store->install($_POST['login'], Tools::encodeString($_POST['password'] . $_POST['login'])))
 258                 {
 259                     Session::logout();
 260                     Tools::logm('poche is now installed');
 261                     Tools::redirect();
 262                 }
 263             }
 264             else {
 265                 Tools::logm('error during installation');
 266                 Tools::redirect();
 267             }
 268         }
 269         exit();
 270     }
 271
 272     public function getTheme() {
 273         return $this->currentTheme;
 274     }
 275
 276     /**
 277      * Provides theme information by parsing theme.ini file if present in the theme's root directory.
 278      * In all cases, the following data will be returned:
 279      * - name: theme's name, or key if the theme is unnamed,
 280      * - current: boolean informing if the theme is the current user theme.
 281      *
 282      * @param string $theme Theme key (directory name)
 283      * @return array|boolean Theme information, or false if the theme doesn't exist.
 284      */
 285     public function getThemeInfo($theme) {
 286         if (!is_dir(THEME . '/' . $theme)) {
 287             return false;
 288         }
 289
 290         $themeIniFile = THEME . '/' . $theme . '/theme.ini';
 291         $themeInfo = array();
 292
 293         if (is_file($themeIniFile) && is_readable($themeIniFile)) {
 294             $themeInfo = parse_ini_file($themeIniFile);
 295         }
 296
 297         if ($themeInfo === false) {
 298             $themeInfo = array();
 299         }
 300         if (!isset($themeInfo['name'])) {
 301             $themeInfo['name'] = $theme;
 302         }
 303         $themeInfo['current'] = ($theme === $this->getTheme());
 304
 305         return $themeInfo;
 306     }
 307
 308     public function getInstalledThemes() {
 309         $handle = opendir(THEME);
 310         $themes = array();
 311
 312         while (($theme = readdir($handle)) !== false) {
 313             # Themes are stored in a directory, so all directory names are themes
 314             # @todo move theme installation data to database
 315             if (!is_dir(THEME . '/' . $theme) || in_array($theme, array('.', '..'))) {
 316                 continue;
 317             }
 318
 319             $themes[$theme] = $this->getThemeInfo($theme);
 320         }
 321
 322         ksort($themes);
 323
 324         return $themes;
 325     }
 326
 327     public function getLanguage() {
 328         return $this->currentLanguage;
 329     }
 330
 331     public function getInstalledLanguages() {
 332         $handle = opendir(LOCALE);
 333         $languages = array();
 334
 335         while (($language = readdir($handle)) !== false) {
 336             # Languages are stored in a directory, so all directory names are languages
 337             # @todo move language installation data to database
 338             if (! is_dir(LOCALE . '/' . $language) || in_array($language, array('..', '.', 'tools'))) {
 339                 continue;
 340             }
 341
 342             $current = false;
 343
 344             if ($language === $this->getLanguage()) {
 345                 $current = true;
 346             }
 347
 348             $languages[] = array('name' => (isset($this->language_names[$language]) ? $this->language_names[$language] : $language), 'value' => $language, 'current' => $current);
 349         }
 350
 351         return $languages;
 352     }
 353
 354     public function getDefaultConfig()
 355     {
 356         return array(
 357             'pager' => PAGINATION,
 358             'language' => LANG,
 359             'theme' => DEFAULT_THEME
 360         );
 361     }
 362
 363     /**
 364      * Call action (mark as fav, archive, delete, etc.)
 365      */
 366     public function action($action, Url $url, $id = 0, $import = FALSE, $autoclose = FALSE, $tags = null)
 367     {
 368         switch ($action)
 369         {
 370             case 'add':
 371                 $content = Tools::getPageContent($url);
 372                 $title = ($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled');
 373                 $body = $content['rss']['channel']['item']['description'];
 374
 375                 // clean content from prevent xss attack
 376                 $purifier = $this->getPurifier();
 377                 $title = $purifier->purify($title);
 378                 $body = $purifier->purify($body);
 379
 380                 //search for possible duplicate
 381                 $duplicate = NULL;
 382                 $duplicate = $this->store->retrieveOneByURL($url->getUrl(), $this->user->getId());
 383
 384                 $last_id = $this->store->add($url->getUrl(), $title, $body, $this->user->getId());
 385                 if ( $last_id ) {
 386                     Tools::logm('add link ' . $url->getUrl());
 387                     if (DOWNLOAD_PICTURES) {
 388                         $content = filtre_picture($body, $url->getUrl(), $last_id);
 389                         Tools::logm('updating content article');
 390                         $this->store->updateContent($last_id, $content, $this->user->getId());
 391                     }
 392
 393                     if ($duplicate != NULL) {
 394                         // 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
 395                         Tools::logm('link ' . $url->getUrl() . ' is a duplicate');
 396                         // 1) - preserve tags and favorite, then drop old entry
 397                         $this->store->reassignTags($duplicate['id'], $last_id);
 398                         if ($duplicate['is_fav']) {
 399                           $this->store->favoriteById($last_id, $this->user->getId());
 400                         }
 401                         if ($this->store->deleteById($duplicate['id'], $this->user->getId())) {
 402                           Tools::logm('previous link ' . $url->getUrl() .' entry deleted');
 403                         }
 404                     }
 405
 406                     $this->messages->add('s', _('the link has been added successfully'));
 407                 }
 408                 else {
 409                     $this->messages->add('e', _('error during insertion : the link wasn\'t added'));
 410                     Tools::logm('error during insertion : the link wasn\'t added ' . $url->getUrl());
 411                 }
 412
 413                 if ($autoclose == TRUE) {
 414                   Tools::redirect('?view=home');
 415                 } else {
 416                   Tools::redirect('?view=home&closewin=true');
 417                 }
 418                 break;
 419             case 'delete':
 420                 $msg = 'delete link #' . $id;
 421                 if ($this->store->deleteById($id, $this->user->getId())) {
 422                     if (DOWNLOAD_PICTURES) {
 423                         remove_directory(ABS_PATH . $id);
 424                     }
 425                     $this->messages->add('s', _('the link has been deleted successfully'));
 426                 }
 427                 else {
 428                     $this->messages->add('e', _('the link wasn\'t deleted'));
 429                     $msg = 'error : can\'t delete link #' . $id;
 430                 }
 431                 Tools::logm($msg);
 432                 Tools::redirect('?');
 433                 break;
 434             case 'toggle_fav' :
 435                 $this->store->favoriteById($id, $this->user->getId());
 436                 Tools::logm('mark as favorite link #' . $id);
 437                 Tools::redirect();
 438                 break;
 439             case 'toggle_archive' :
 440                 $this->store->archiveById($id, $this->user->getId());
 441                 Tools::logm('archive link #' . $id);
 442                 Tools::redirect();
 443                 break;
 444             case 'archive_all' :
 445                 $this->store->archiveAll($this->user->getId());
 446                 Tools::logm('archive all links');
 447                 Tools::redirect();
 448                 break;
 449             case 'add_tag' :
 450                 $tags = explode(',', $_POST['value']);
 451                 $entry_id = $_POST['entry_id'];
 452                 $entry = $this->store->retrieveOneById($entry_id, $this->user->getId());
 453                 if (!$entry) {
 454                     $this->messages->add('e', _('Article not found!'));
 455                     Tools::logm('error : article not found');
 456                     Tools::redirect();
 457                 }
 458                 //get all already set tags to preven duplicates
 459                 $already_set_tags = array();
 460                 $entry_tags = $this->store->retrieveTagsByEntry($entry_id);
 461                 foreach ($entry_tags as $tag) {
 462                   $already_set_tags[] = $tag['value'];
 463                 }
 464                 foreach($tags as $key => $tag_value) {
 465                     $value = trim($tag_value);
 466                     if ($value && !in_array($value, $already_set_tags)) {
 467                       $tag = $this->store->retrieveTagByValue($value);
 468
 469                       if (is_null($tag)) {
 470                           # we create the tag
 471                           $tag = $this->store->createTag($value);
 472                           $sequence = '';
 473                           if (STORAGE == 'postgres') {
 474                               $sequence = 'tags_id_seq';
 475                           }
 476                           $tag_id = $this->store->getLastId($sequence);
 477                       }
 478                       else {
 479                           $tag_id = $tag['id'];
 480                       }
 481
 482                       # we assign the tag to the article
 483                       $this->store->setTagToEntry($tag_id, $entry_id);
 484                     }
 485                 }
 486                 Tools::redirect();
 487                 break;
 488             case 'remove_tag' :
 489                 $tag_id = $_GET['tag_id'];
 490                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 491                 if (!$entry) {
 492                     $this->messages->add('e', _('Article not found!'));
 493                     Tools::logm('error : article not found');
 494                     Tools::redirect();
 495                 }
 496                 $this->store->removeTagForEntry($id, $tag_id);
 497                 Tools::redirect();
 498                 break;
 499             default:
 500                 break;
 501         }
 502     }
 503
 504     function displayView($view, $id = 0)
 505     {
 506         $tpl_vars = array();
 507
 508         switch ($view)
 509         {
 510             case 'config':
 511                 $dev_infos = $this->getPocheVersion('dev');
 512                 $dev = trim($dev_infos[0]);
 513                 $check_time_dev = date('d-M-Y H:i', $dev_infos[1]);
 514                 $prod_infos = $this->getPocheVersion('prod');
 515                 $prod = trim($prod_infos[0]);
 516                 $check_time_prod = date('d-M-Y H:i', $prod_infos[1]);
 517                 $compare_dev = version_compare(POCHE, $dev);
 518                 $compare_prod = version_compare(POCHE, $prod);
 519                 $themes = $this->getInstalledThemes();
 520                 $languages = $this->getInstalledLanguages();
 521                 $token = $this->user->getConfigValue('token');
 522                 $http_auth = (isset($_SERVER['PHP_AUTH_USER']) || isset($_SERVER['REMOTE_USER'])) ? true : false;
 523                 $tpl_vars = array(
 524                     'themes' => $themes,
 525                     'languages' => $languages,
 526                     'dev' => $dev,
 527                     'prod' => $prod,
 528                     'check_time_dev' => $check_time_dev,
 529                     'check_time_prod' => $check_time_prod,
 530                     'compare_dev' => $compare_dev,
 531                     'compare_prod' => $compare_prod,
 532                     'token' => $token,
 533                     'user_id' => $this->user->getId(),
 534                     'http_auth' => $http_auth,
 535                 );
 536                 Tools::logm('config view');
 537                 break;
 538             case 'edit-tags':
 539                 # tags
 540                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 541                 if (!$entry) {
 542                     $this->messages->add('e', _('Article not found!'));
 543                     Tools::logm('error : article not found');
 544                     Tools::redirect();
 545                 }
 546                 $tags = $this->store->retrieveTagsByEntry($id);
 547                 $tpl_vars = array(
 548                     'entry_id' => $id,
 549                     'tags' => $tags,
 550                     'entry' => $entry,
 551                 );
 552                 break;
 553             case 'tags':
 554                 $token = $this->user->getConfigValue('token');
 555                 //if term is set - search tags for this term
 556                 $term = Tools::checkVar('term');
 557                 $tags = $this->store->retrieveAllTags($this->user->getId(), $term);
 558                 if (Tools::isAjaxRequest()) {
 559                   $result = array();
 560                   foreach ($tags as $tag) {
 561                     $result[] = $tag['value'];
 562                   }
 563                   echo json_encode($result);
 564                   exit;
 565                 }
 566                 $tpl_vars = array(
 567                     'token' => $token,
 568                     'user_id' => $this->user->getId(),
 569                     'tags' => $tags,
 570                 );
 571                 break;
 572             case 'search':
 573                 if (isset($_GET['search'])) {
 574                    $search = filter_var($_GET['search'], FILTER_SANITIZE_STRING);
 575                    $tpl_vars['entries'] = $this->store->search($search, $this->user->getId());
 576                    $count = count($tpl_vars['entries']);
 577                    $this->pagination->set_total($count);
 578                    $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 579                             $this->pagination->page_links('?view=' . $view . '?search=' . $search . '&sort=' . $_SESSION['sort'] . '&' ));
 580                    $tpl_vars['page_links'] = $page_links;
 581                    $tpl_vars['nb_results'] = $count;
 582                    $tpl_vars['search_term'] = $search;
 583                 }
 584                 break;
 585             case 'view':
 586                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 587                 if ($entry != NULL) {
 588                     Tools::logm('view link #' . $id);
 589                     $content = $entry['content'];
 590                     if (function_exists('tidy_parse_string')) {
 591                         $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
 592                         $tidy->cleanRepair();
 593                         $content = $tidy->value;
 594                     }
 595
 596                     # flattr checking
 597                     $flattr = new FlattrItem();
 598                     $flattr->checkItem($entry['url'], $entry['id']);
 599
 600                     # tags
 601                     $tags = $this->store->retrieveTagsByEntry($entry['id']);
 602
 603                     $tpl_vars = array(
 604                         'entry' => $entry,
 605                         'content' => $content,
 606                         'flattr' => $flattr,
 607                         'tags' => $tags
 608                     );
 609                 }
 610                 else {
 611                     Tools::logm('error in view call : entry is null');
 612                 }
 613                 break;
 614             default: # home, favorites, archive and tag views
 615                 $tpl_vars = array(
 616                     'entries' => '',
 617                     'page_links' => '',
 618                     'nb_results' => '',
 619                     'listmode' => (isset($_COOKIE['listmode']) ? true : false),
 620                 );
 621
 622                 //if id is given - we retrive entries by tag: id is tag id
 623                 if ($id) {
 624                   $tpl_vars['tag'] = $this->store->retrieveTag($id, $this->user->getId());
 625                   $tpl_vars['id'] = intval($id);
 626                 }
 627
 628                 $count = $this->store->getEntriesByViewCount($view, $this->user->getId(), $id);
 629
 630                 if ($count > 0) {
 631                     $this->pagination->set_total($count);
 632                     $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 633                         $this->pagination->page_links('?view=' . $view . '&sort=' . $_SESSION['sort'] . (($id)?'&id='.$id:'') . '&' ));
 634                     $tpl_vars['entries'] = $this->store->getEntriesByView($view, $this->user->getId(), $this->pagination->get_limit(), $id);
 635                     $tpl_vars['page_links'] = $page_links;
 636                     $tpl_vars['nb_results'] = $count;
 637                 }
 638                 Tools::logm('display ' . $view . ' view');
 639                 break;
 640         }
 641
 642         return $tpl_vars;
 643     }
 644
 645     /**
 646      * update the password of the current user.
 647      * if MODE_DEMO is TRUE, the password can't be updated.
 648      * @todo add the return value
 649      * @todo set the new password in function header like this updatePassword($newPassword)
 650      * @return boolean
 651      */
 652     public function updatePassword()
 653     {
 654         if (MODE_DEMO) {
 655             $this->messages->add('i', _('in demo mode, you can\'t update your password'));
 656             Tools::logm('in demo mode, you can\'t do this');
 657             Tools::redirect('?view=config');
 658         }
 659         else {
 660             if (isset($_POST['password']) && isset($_POST['password_repeat'])) {
 661                 if ($_POST['password'] == $_POST['password_repeat'] && $_POST['password'] != "") {
 662                     $this->messages->add('s', _('your password has been updated'));
 663                     $this->store->updatePassword($this->user->getId(), Tools::encodeString($_POST['password'] . $this->user->getUsername()));
 664                     Session::logout();
 665                     Tools::logm('password updated');
 666                     Tools::redirect();
 667                 }
 668                 else {
 669                     $this->messages->add('e', _('the two fields have to be filled & the password must be the same in the two fields'));
 670                     Tools::redirect('?view=config');
 671                 }
 672             }
 673         }
 674     }
 675
 676     public function updateTheme()
 677     {
 678         # no data
 679         if (empty($_POST['theme'])) {
 680         }
 681
 682         # we are not going to change it to the current theme...
 683         if ($_POST['theme'] == $this->getTheme()) {
 684             $this->messages->add('w', _('still using the "' . $this->getTheme() . '" theme!'));
 685             Tools::redirect('?view=config');
 686         }
 687
 688         $themes = $this->getInstalledThemes();
 689         $actualTheme = false;
 690
 691         foreach (array_keys($themes) as $theme) {
 692             if ($theme == $_POST['theme']) {
 693                 $actualTheme = true;
 694                 break;
 695             }
 696         }
 697
 698         if (! $actualTheme) {
 699             $this->messages->add('e', _('that theme does not seem to be installed'));
 700             Tools::redirect('?view=config');
 701         }
 702
 703         $this->store->updateUserConfig($this->user->getId(), 'theme', $_POST['theme']);
 704         $this->messages->add('s', _('you have changed your theme preferences'));
 705
 706         $currentConfig = $_SESSION['poche_user']->config;
 707         $currentConfig['theme'] = $_POST['theme'];
 708
 709         $_SESSION['poche_user']->setConfig($currentConfig);
 710
 711         $this->emptyCache();
 712
 713         Tools::redirect('?view=config');
 714     }
 715
 716     public function updateLanguage()
 717     {
 718         # no data
 719         if (empty($_POST['language'])) {
 720         }
 721
 722         # we are not going to change it to the current language...
 723         if ($_POST['language'] == $this->getLanguage()) {
 724             $this->messages->add('w', _('still using the "' . $this->getLanguage() . '" language!'));
 725             Tools::redirect('?view=config');
 726         }
 727
 728         $languages = $this->getInstalledLanguages();
 729         $actualLanguage = false;
 730
 731         foreach ($languages as $language) {
 732             if ($language['value'] == $_POST['language']) {
 733                 $actualLanguage = true;
 734                 break;
 735             }
 736         }
 737
 738         if (! $actualLanguage) {
 739             $this->messages->add('e', _('that language does not seem to be installed'));
 740             Tools::redirect('?view=config');
 741         }
 742
 743         $this->store->updateUserConfig($this->user->getId(), 'language', $_POST['language']);
 744         $this->messages->add('s', _('you have changed your language preferences'));
 745
 746         $currentConfig = $_SESSION['poche_user']->config;
 747         $currentConfig['language'] = $_POST['language'];
 748
 749         $_SESSION['poche_user']->setConfig($currentConfig);
 750
 751         $this->emptyCache();
 752
 753         Tools::redirect('?view=config');
 754     }
 755     /**
 756      * get credentials from differents sources
 757      * it redirects the user to the $referer link
 758      * @return array
 759      */
 760     private function credentials() {
 761         if(isset($_SERVER['PHP_AUTH_USER'])) {
 762             return array($_SERVER['PHP_AUTH_USER'],'php_auth',true);
 763         }
 764         if(!empty($_POST['login']) && !empty($_POST['password'])) {
 765             return array($_POST['login'],$_POST['password'],false);
 766         }
 767         if(isset($_SERVER['REMOTE_USER'])) {
 768             return array($_SERVER['REMOTE_USER'],'http_auth',true);
 769         }
 770
 771         return array(false,false,false);
 772     }
 773
 774     /**
 775      * checks if login & password are correct and save the user in session.
 776      * it redirects the user to the $referer link
 777      * @param  string $referer the url to redirect after login
 778      * @todo add the return value
 779      * @return boolean
 780      */
 781     public function login($referer)
 782     {
 783         list($login,$password,$isauthenticated)=$this->credentials();
 784         if($login === false || $password === false) {
 785             $this->messages->add('e', _('login failed: you have to fill all fields'));
 786             Tools::logm('login failed');
 787             Tools::redirect();
 788         }
 789         if (!empty($login) && !empty($password)) {
 790             $user = $this->store->login($login, Tools::encodeString($password . $login), $isauthenticated);
 791             if ($user != array()) {
 792                 # Save login into Session
 793                 $longlastingsession = isset($_POST['longlastingsession']);
 794                 $passwordTest = ($isauthenticated) ? $user['password'] : Tools::encodeString($password . $login);
 795                 Session::login($user['username'], $user['password'], $login, $passwordTest, $longlastingsession, array('poche_user' => new User($user)));
 796                 $this->messages->add('s', _('welcome to your wallabag'));
 797                 Tools::logm('login successful');
 798                 Tools::redirect($referer);
 799             }
 800             $this->messages->add('e', _('login failed: bad login or password'));
 801             Tools::logm('login failed');
 802             Tools::redirect();
 803         }
 804     }
 805
 806     /**
 807      * log out the poche user. It cleans the session.
 808      * @todo add the return value
 809      * @return boolean
 810      */
 811     public function logout()
 812     {
 813         $this->user = array();
 814         Session::logout();
 815         Tools::logm('logout');
 816         Tools::redirect();
 817     }
 818
 819     /**
 820      * import datas into your poche
 821      * @return boolean
 822      */
 823     public function import() {
 824
 825       if (!defined('IMPORT_LIMIT')) {
 826         define('IMPORT_LIMIT', 5);
 827       }
 828       if (!defined('IMPORT_DELAY')) {
 829         define('IMPORT_DELAY', 5);
 830       }
 831
 832       if ( isset($_FILES['file']) ) {
 833         Tools::logm('Import stated: parsing file');
 834
 835         // assume, that file is in json format
 836         $str_data = file_get_contents($_FILES['file']['tmp_name']);
 837         $data = json_decode($str_data, true);
 838
 839         if ( $data === null ) {
 840           //not json - assume html
 841           $html = new simple_html_dom();
 842           $html->load_file($_FILES['file']['tmp_name']);
 843           $data = array();
 844           $read = 0;
 845           foreach (array('ol','ul') as $list) {
 846             foreach ($html->find($list) as $ul) {
 847               foreach ($ul->find('li') as $li) {
 848                 $tmpEntry = array();
 849                   $a = $li->find('a');
 850                   $tmpEntry['url'] = $a[0]->href;
 851                   $tmpEntry['tags'] = $a[0]->tags;
 852                   $tmpEntry['is_read'] = $read;
 853                   if ($tmpEntry['url']) {
 854                     $data[] = $tmpEntry;
 855                   }
 856               }
 857               # the second <ol/ul> is for read links
 858               $read = ((sizeof($data) && $read)?0:1);
 859             }
 860           }
 861         }
 862
 863         //for readability structure
 864         foreach ($data as $record) {
 865           if (is_array($record)) {
 866             $data[] = $record;
 867             foreach ($record as $record2) {
 868               if (is_array($record2)) {
 869                 $data[] = $record2;
 870               }
 871             }
 872           }
 873         }
 874
 875         $urlsInserted = array(); //urls of articles inserted
 876         foreach ($data as $record) {
 877           $url = trim( isset($record['article__url']) ? $record['article__url'] : (isset($record['url']) ? $record['url'] : '') );
 878           if ( $url and !in_array($url, $urlsInserted) ) {
 879             $title = (isset($record['title']) ? $record['title'] :  _('Untitled - Import - ').'</a> <a href="./?import">'._('click to finish import').'</a><a>');
 880             $body = (isset($record['content']) ? $record['content'] : '');
 881             $isRead = (isset($record['is_read']) ? intval($record['is_read']) : (isset($record['archive'])?intval($record['archive']):0));
 882             $isFavorite = (isset($record['is_fav']) ? intval($record['is_fav']) : (isset($record['favorite'])?intval($record['favorite']):0) );
 883             //insert new record
 884             $id = $this->store->add($url, $title, $body, $this->user->getId(), $isFavorite, $isRead);
 885             if ( $id ) {
 886               $urlsInserted[] = $url; //add
 887
 888               if ( isset($record['tags']) && trim($record['tags']) ) {
 889                 //@TODO: set tags
 890
 891               }
 892             }
 893           }
 894         }
 895
 896         $i = sizeof($urlsInserted);
 897         if ( $i > 0 ) {
 898           $this->messages->add('s', _('Articles inserted: ').$i._('. Please note, that some may be marked as "read".'));
 899         }
 900         Tools::logm('Import of articles finished: '.$i.' articles added (w/o content if not provided).');
 901       }
 902       //file parsing finished here
 903
 904       //now download article contents if any
 905
 906       //check if we need to download any content
 907       $recordsDownloadRequired = $this->store->retrieveUnfetchedEntriesCount($this->user->getId());
 908       if ( $recordsDownloadRequired == 0 ) {
 909         //nothing to download
 910         $this->messages->add('s', _('Import finished.'));
 911         Tools::logm('Import finished completely');
 912         Tools::redirect();
 913       }
 914       else {
 915         //if just inserted - don't download anything, download will start in next reload
 916         if ( !isset($_FILES['file']) ) {
 917           //download next batch
 918           Tools::logm('Fetching next batch of articles...');
 919           $items = $this->store->retrieveUnfetchedEntries($this->user->getId(), IMPORT_LIMIT);
 920
 921           $purifier = $this->getPurifier();
 922
 923           foreach ($items as $item) {
 924             $url = new Url(base64_encode($item['url']));
 925             Tools::logm('Fetching article '.$item['id']);
 926             $content = Tools::getPageContent($url);
 927
 928             $title = (($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled'));
 929             $body = (($content['rss']['channel']['item']['description'] != '') ? $content['rss']['channel']['item']['description'] : _('Undefined'));
 930
 931             //clean content to prevent xss attack
 932             $title = $purifier->purify($title);
 933             $body = $purifier->purify($body);
 934
 935             $this->store->updateContentAndTitle($item['id'], $title, $body, $this->user->getId());
 936             Tools::logm('Article '.$item['id'].' updated.');
 937           }
 938
 939         }
 940       }
 941
 942       return array('includeImport'=>true, 'import'=>array('recordsDownloadRequired'=>$recordsDownloadRequired, 'recordsUnderDownload'=> IMPORT_LIMIT, 'delay'=> IMPORT_DELAY * 1000) );
 943     }
 944
 945     /**
 946      * export poche entries in json
 947      * @return json all poche entries
 948      */
 949     public function export() {
 950       $filename = "wallabag-export-".$this->user->getId()."-".date("Y-m-d").".json";
 951       header('Content-Disposition: attachment; filename='.$filename);
 952
 953       $entries = $this->store->retrieveAll($this->user->getId());
 954       echo $this->tpl->render('export.twig', array(
 955           'export' => Tools::renderJson($entries),
 956       ));
 957       Tools::logm('export view');
 958     }
 959
 960     /**
 961      * Checks online the latest version of poche and cache it
 962      * @param  string $which 'prod' or 'dev'
 963      * @return string        latest $which version
 964      */
 965     private function getPocheVersion($which = 'prod') {
 966       $cache_file = CACHE . '/' . $which;
 967       $check_time = time();
 968
 969       # checks if the cached version file exists
 970       if (file_exists($cache_file) && (filemtime($cache_file) > (time() - 86400 ))) {
 971          $version = file_get_contents($cache_file);
 972          $check_time = filemtime($cache_file);
 973       } else {
 974          $version = file_get_contents('http://static.wallabag.org/versions/' . $which);
 975          file_put_contents($cache_file, $version, LOCK_EX);
 976       }
 977       return array($version, $check_time);
 978     }
 979
 980     public function generateToken()
 981     {
 982       if (ini_get('open_basedir') === '') {
 983         if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
 984           echo 'This is a server using Windows!';
 985           // alternative to /dev/urandom for Windows
 986           $token = substr(base64_encode(uniqid(mt_rand(), true)), 0, 20);
 987         } else {
 988           $token = substr(base64_encode(file_get_contents('/dev/urandom', false, null, 0, 20)), 0, 15);
 989         }
 990       }
 991       else {
 992         $token = substr(base64_encode(uniqid(mt_rand(), true)), 0, 20);
 993       }
 994
 995       $token = str_replace('+', '', $token);
 996       $this->store->updateUserConfig($this->user->getId(), 'token', $token);
 997       $currentConfig = $_SESSION['poche_user']->config;
 998       $currentConfig['token'] = $token;
 999       $_SESSION['poche_user']->setConfig($currentConfig);
1000       Tools::redirect();
1001     }
1002
1003     public function generateFeeds($token, $user_id, $tag_id, $type = 'home')
1004     {
1005         $allowed_types = array('home', 'fav', 'archive', 'tag');
1006         $config = $this->store->getConfigUser($user_id);
1007
1008         if ($config == null) {
1009             die(_('User with this id (' . $user_id . ') does not exist.'));
1010         }
1011
1012         if (!in_array($type, $allowed_types) ||
1013             $token != $config['token']) {
1014             die(_('Uh, there is a problem while generating feeds.'));
1015         }
1016         // Check the token
1017
1018         $feed = new FeedWriter(RSS2);
1019         $feed->setTitle('wallabag — ' . $type . ' feed');
1020         $feed->setLink(Tools::getPocheUrl());
1021         $feed->setChannelElement('pubDate', date(DATE_RSS , time()));
1022         $feed->setChannelElement('generator', 'wallabag');
1023         $feed->setDescription('wallabag ' . $type . ' elements');
1024
1025         if ($type == 'tag') {
1026             $entries = $this->store->retrieveEntriesByTag($tag_id, $user_id);
1027         }
1028         else {
1029             $entries = $this->store->getEntriesByView($type, $user_id);
1030         }
1031
1032         if (count($entries) > 0) {
1033             foreach ($entries as $entry) {
1034                 $newItem = $feed->createNewItem();
1035                 $newItem->setTitle($entry['title']);
1036                 $newItem->setSource(Tools::getPocheUrl() . '?view=view&amp;id=' . $entry['id']);
1037                 $newItem->setLink($entry['url']);
1038                 $newItem->setDate(time());
1039                 $newItem->setDescription($entry['content']);
1040                 $feed->addItem($newItem);
1041             }
1042         }
1043
1044         $feed->genarateFeed();
1045         exit;
1046     }
1047
1048     public function emptyCache() {
1049         $files = new RecursiveIteratorIterator(
1050             new RecursiveDirectoryIterator(CACHE, RecursiveDirectoryIterator::SKIP_DOTS),
1051             RecursiveIteratorIterator::CHILD_FIRST
1052         );
1053
1054         foreach ($files as $fileinfo) {
1055             $todo = ($fileinfo->isDir() ? 'rmdir' : 'unlink');
1056             $todo($fileinfo->getRealPath());
1057         }
1058
1059         Tools::logm('empty cache');
1060         $this->messages->add('s', _('Cache deleted.'));
1061         Tools::redirect();
1062     }
1063
1064     /**
1065      * return new purifier object with actual config
1066      */
1067     protected function getPurifier() {
1068       $config = HTMLPurifier_Config::createDefault();
1069       $config->set('Cache.SerializerPath', CACHE);
1070       $config->set('HTML.SafeIframe', true);
1071       $config->set('URI.SafeIframeRegexp', '%^(https?:)?//(www\.youtube(?:-nocookie)?\.com/embed/|player\.vimeo\.com/video/)%'); //allow YouTube and Vimeo$purifier = new HTMLPurifier($config);
1072
1073       return new HTMLPurifier($config);
1074     }
1075 }