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 $notInstalledMessage = array();
  25
  26     public function __construct()
  27     {
  28         if ($this->configFileIsAvailable()) {
  29             $this->init();
  30         }
  31
  32         if ($this->themeIsInstalled()) {
  33             $this->initTpl();
  34         }
  35
  36         if ($this->systemIsInstalled()) {
  37             $this->store = new Database();
  38             $this->messages = new Messages();
  39             # installation
  40             if (! $this->store->isInstalled()) {
  41                 $this->install();
  42             }
  43             $this->store->checkTags();
  44         }
  45     }
  46
  47     private function init()
  48     {
  49         Tools::initPhp();
  50         Session::$sessionName = 'poche';
  51         Session::init();
  52
  53         if (isset($_SESSION['poche_user']) && $_SESSION['poche_user'] != array()) {
  54             $this->user = $_SESSION['poche_user'];
  55         } else {
  56             # fake user, just for install & login screens
  57             $this->user = new User();
  58             $this->user->setConfig($this->getDefaultConfig());
  59         }
  60
  61         # l10n
  62         $language = $this->user->getConfigValue('language');
  63         putenv('LC_ALL=' . $language);
  64         setlocale(LC_ALL, $language);
  65         bindtextdomain($language, LOCALE);
  66         textdomain($language);
  67
  68         # Pagination
  69         $this->pagination = new Paginator($this->user->getConfigValue('pager'), 'p');
  70
  71         # Set up theme
  72         $themeDirectory = $this->user->getConfigValue('theme');
  73
  74         if ($themeDirectory === false) {
  75             $themeDirectory = DEFAULT_THEME;
  76         }
  77
  78         $this->currentTheme = $themeDirectory;
  79
  80         # Set up language
  81         $languageDirectory = $this->user->getConfigValue('language');
  82
  83         if ($languageDirectory === false) {
  84             $languageDirectory = DEFAULT_THEME;
  85         }
  86
  87         $this->currentLanguage = $languageDirectory;
  88     }
  89
  90     public function configFileIsAvailable() {
  91         if (! self::$configFileAvailable) {
  92             $this->notInstalledMessage[] = 'You have to rename inc/poche/config.inc.php.new to inc/poche/config.inc.php.';
  93
  94             return false;
  95         }
  96
  97         return true;
  98     }
  99
 100     public function themeIsInstalled() {
 101         $passTheme = TRUE;
 102         # Twig is an absolute requirement for Poche to function. Abort immediately if the Composer installer hasn't been run yet
 103         if (! self::$canRenderTemplates) {
 104             $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.';
 105             $passTheme = FALSE;
 106         }
 107
 108         if (! is_writable(CACHE)) {
 109             $this->notInstalledMessage[] = 'You don\'t have write access on cache directory.';
 110
 111             self::$canRenderTemplates = false;
 112
 113             $passTheme = FALSE;
 114         }
 115
 116         # Check if the selected theme and its requirements are present
 117         $theme = $this->getTheme();
 118
 119         if ($theme != '' && ! is_dir(THEME . '/' . $theme)) {
 120             $this->notInstalledMessage[] = 'The currently selected theme (' . $theme . ') does not seem to be properly installed (Missing directory: ' . THEME . '/' . $theme . ')';
 121
 122             self::$canRenderTemplates = false;
 123
 124             $passTheme = FALSE;
 125         }
 126
 127         $themeInfo = $this->getThemeInfo($theme);
 128         if (isset($themeInfo['requirements']) && is_array($themeInfo['requirements'])) {
 129             foreach ($themeInfo['requirements'] as $requiredTheme) {
 130                 if (! is_dir(THEME . '/' . $requiredTheme)) {
 131                     $this->notInstalledMessage[] = 'The required "' . $requiredTheme . '" theme is missing for the current theme (' . $theme . ')';
 132
 133                     self::$canRenderTemplates = false;
 134
 135                     $passTheme = FALSE;
 136                 }
 137             }
 138         }
 139
 140         if (!$passTheme) {
 141             return FALSE;
 142         }
 143
 144
 145         return true;
 146     }
 147
 148     /**
 149      * all checks before installation.
 150      * @todo move HTML to template
 151      * @return boolean
 152      */
 153     public function systemIsInstalled()
 154     {
 155         $msg = TRUE;
 156
 157         $configSalt = defined('SALT') ? constant('SALT') : '';
 158
 159         if (empty($configSalt)) {
 160             $this->notInstalledMessage[] = 'You have not yet filled in the SALT value in the config.inc.php file.';
 161             $msg = FALSE;
 162         }
 163         if (STORAGE == 'sqlite' && ! file_exists(STORAGE_SQLITE)) {
 164             Tools::logm('sqlite file doesn\'t exist');
 165             $this->notInstalledMessage[] = 'sqlite file doesn\'t exist, you can find it in install folder. Copy it in /db folder.';
 166             $msg = FALSE;
 167         }
 168         if (is_dir(ROOT . '/install') && ! DEBUG_POCHE) {
 169             $this->notInstalledMessage[] = 'you have to delete the /install folder before using poche.';
 170             $msg = FALSE;
 171         }
 172         if (STORAGE == 'sqlite' && ! is_writable(STORAGE_SQLITE)) {
 173             Tools::logm('you don\'t have write access on sqlite file');
 174             $this->notInstalledMessage[] = 'You don\'t have write access on sqlite file.';
 175             $msg = FALSE;
 176         }
 177
 178         if (! $msg) {
 179             return false;
 180         }
 181
 182         return true;
 183     }
 184
 185     public function getNotInstalledMessage() {
 186         return $this->notInstalledMessage;
 187     }
 188
 189     private function initTpl()
 190     {
 191         $loaderChain = new Twig_Loader_Chain();
 192         $theme = $this->getTheme();
 193
 194         # add the current theme as first to the loader chain so Twig will look there first for overridden template files
 195         try {
 196             $loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . $theme));
 197         } catch (Twig_Error_Loader $e) {
 198             # @todo isInstalled() should catch this, inject Twig later
 199             die('The currently selected theme (' . $theme . ') does not seem to be properly installed (' . THEME . '/' . $theme .' is missing)');
 200         }
 201
 202         # add all required themes to the loader chain
 203         $themeInfo = $this->getThemeInfo($theme);
 204         if (isset($themeInfo['requirements']) && is_array($themeInfo['requirements'])) {
 205             foreach ($themeInfo['requirements'] as $requiredTheme) {
 206                 try {
 207                     $loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . $requiredTheme));
 208                 } catch (Twig_Error_Loader $e) {
 209                     # @todo isInstalled() should catch this, inject Twig later
 210                     die('The required "' . $requiredTheme . '" theme is missing for the current theme (' . $theme . ')');
 211                 }
 212             }
 213         }
 214
 215         if (DEBUG_POCHE) {
 216             $twigParams = array();
 217         } else {
 218             $twigParams = array('cache' => CACHE);
 219         }
 220
 221         $this->tpl = new Twig_Environment($loaderChain, $twigParams);
 222         $this->tpl->addExtension(new Twig_Extensions_Extension_I18n());
 223
 224         # filter to display domain name of an url
 225         $filter = new Twig_SimpleFilter('getDomain', 'Tools::getDomain');
 226         $this->tpl->addFilter($filter);
 227
 228         # filter for reading time
 229         $filter = new Twig_SimpleFilter('getReadingTime', 'Tools::getReadingTime');
 230         $this->tpl->addFilter($filter);
 231     }
 232
 233     private function install()
 234     {
 235         Tools::logm('poche still not installed');
 236         echo $this->tpl->render('install.twig', array(
 237             'token' => Session::getToken(),
 238             'theme' => $this->getTheme(),
 239             'poche_url' => Tools::getPocheUrl()
 240         ));
 241         if (isset($_GET['install'])) {
 242             if (($_POST['password'] == $_POST['password_repeat'])
 243                 && $_POST['password'] != "" && $_POST['login'] != "") {
 244                 # let's rock, install poche baby !
 245                 if ($this->store->install($_POST['login'], Tools::encodeString($_POST['password'] . $_POST['login'])))
 246                 {
 247                     Session::logout();
 248                     Tools::logm('poche is now installed');
 249                     Tools::redirect();
 250                 }
 251             }
 252             else {
 253                 Tools::logm('error during installation');
 254                 Tools::redirect();
 255             }
 256         }
 257         exit();
 258     }
 259
 260     public function getTheme() {
 261         return $this->currentTheme;
 262     }
 263
 264     /**
 265      * Provides theme information by parsing theme.ini file if present in the theme's root directory.
 266      * In all cases, the following data will be returned:
 267      * - name: theme's name, or key if the theme is unnamed,
 268      * - current: boolean informing if the theme is the current user theme.
 269      *
 270      * @param string $theme Theme key (directory name)
 271      * @return array|boolean Theme information, or false if the theme doesn't exist.
 272      */
 273     public function getThemeInfo($theme) {
 274         if (!is_dir(THEME . '/' . $theme)) {
 275             return false;
 276         }
 277
 278         $themeIniFile = THEME . '/' . $theme . '/theme.ini';
 279         $themeInfo = array();
 280
 281         if (is_file($themeIniFile) && is_readable($themeIniFile)) {
 282             $themeInfo = parse_ini_file($themeIniFile);
 283         }
 284
 285         if ($themeInfo === false) {
 286             $themeInfo = array();
 287         }
 288         if (!isset($themeInfo['name'])) {
 289             $themeInfo['name'] = $theme;
 290         }
 291         $themeInfo['current'] = ($theme === $this->getTheme());
 292
 293         return $themeInfo;
 294     }
 295
 296     public function getInstalledThemes() {
 297         $handle = opendir(THEME);
 298         $themes = array();
 299
 300         while (($theme = readdir($handle)) !== false) {
 301             # Themes are stored in a directory, so all directory names are themes
 302             # @todo move theme installation data to database
 303             if (!is_dir(THEME . '/' . $theme) || in_array($theme, array('.', '..'))) {
 304                 continue;
 305             }
 306
 307             $themes[$theme] = $this->getThemeInfo($theme);
 308         }
 309
 310         return $themes;
 311     }
 312
 313     public function getLanguage() {
 314         return $this->currentLanguage;
 315     }
 316
 317     public function getInstalledLanguages() {
 318         $handle = opendir(LOCALE);
 319         $languages = array();
 320
 321         while (($language = readdir($handle)) !== false) {
 322             # Languages are stored in a directory, so all directory names are languages
 323             # @todo move language installation data to database
 324             if (! is_dir(LOCALE . '/' . $language) || in_array($language, array('..', '.'))) {
 325                 continue;
 326             }
 327
 328             $current = false;
 329
 330             if ($language === $this->getLanguage()) {
 331                 $current = true;
 332             }
 333
 334             $languages[] = array('name' => $language, 'current' => $current);
 335         }
 336
 337         return $languages;
 338     }
 339
 340     public function getDefaultConfig()
 341     {
 342         return array(
 343             'pager' => PAGINATION,
 344             'language' => LANG,
 345             'theme' => DEFAULT_THEME
 346         );
 347     }
 348
 349     protected function getPageContent(Url $url)
 350     {
 351         $options = array('http' => array('user_agent' => 'poche'));
 352         if (isset($_SERVER['AUTH_TYPE']) && "basic" === strtolower($_SERVER['AUTH_TYPE'])) {
 353             $options['http']['header'] = sprintf(
 354                 "Authorization: Basic %s",
 355                 base64_encode(
 356                     sprintf('%s:%s', $_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW'])
 357                 )
 358             );
 359         }
 360         $context = stream_context_create($options);
 361         $json = file_get_contents(Tools::getPocheUrl() . '/inc/3rdparty/makefulltextfeed.php?url='.urlencode($url->getUrl()).'&max=5&links=preserve&exc=&format=json&submit=Create+Feed', false, $context);
 362         return json_decode($json, true);
 363     }
 364
 365     /**
 366      * Call action (mark as fav, archive, delete, etc.)
 367      */
 368     public function action($action, Url $url, $id = 0, $import = FALSE, $autoclose = FALSE, $tags = null)
 369     {
 370         switch ($action)
 371         {
 372             case 'add':
 373                 $content = $this->getPageContent($url);
 374                 $title = ($content['rss']['channel']['item']['title'] != '') ? $content['rss']['channel']['item']['title'] : _('Untitled');
 375                 $body = $content['rss']['channel']['item']['description'];
 376
 377                 //search for possible duplicate if not in import mode
 378                 if (!$import) {
 379                     $duplicate = $this->store->retrieveOneByURL($url->getUrl(), $this->user->getId());
 380                 }
 381
 382                 if ($this->store->add($url->getUrl(), $title, $body, $this->user->getId())) {
 383                     Tools::logm('add link ' . $url->getUrl());
 384                     $sequence = '';
 385                     if (STORAGE == 'postgres') {
 386                         $sequence = 'entries_id_seq';
 387                     }
 388                     $last_id = $this->store->getLastId($sequence);
 389                     if (DOWNLOAD_PICTURES) {
 390                         $content = filtre_picture($body, $url->getUrl(), $last_id);
 391                         Tools::logm('updating content article');
 392                         $this->store->updateContent($last_id, $content, $this->user->getId());
 393                     }
 394
 395                     if ($duplicate != NULL) {
 396                         // 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
 397                         Tools::logm('link ' . $url->getUrl() . ' is a duplicate');
 398                         // 1) - preserve tags and favorite, then drop old entry
 399                         $this->store->reassignTags($duplicate['id'], $last_id);
 400                         if ($duplicate['is_fav']) {
 401                           $this->store->favoriteById($last_id, $this->user->getId());
 402                         }
 403                         if ($this->store->deleteById($duplicate['id'], $this->user->getId())) {
 404                           Tools::logm('previous link ' . $url->getUrl() .' entry deleted');
 405                         }
 406                     }
 407
 408                     if (!$import) {
 409                         $this->messages->add('s', _('the link has been added successfully'));
 410                     }
 411                 }
 412                 else {
 413                     if (!$import) {
 414                         $this->messages->add('e', _('error during insertion : the link wasn\'t added'));
 415                         Tools::logm('error during insertion : the link wasn\'t added ' . $url->getUrl());
 416                     }
 417                 }
 418
 419                 if (!$import) {
 420                     if ($autoclose == TRUE) {
 421                       Tools::redirect('?view=home');
 422                     } else {
 423                       Tools::redirect('?view=home&closewin=true');
 424                     }
 425                 }
 426                 break;
 427             case 'delete':
 428                 $msg = 'delete link #' . $id;
 429                 if ($this->store->deleteById($id, $this->user->getId())) {
 430                     if (DOWNLOAD_PICTURES) {
 431                         remove_directory(ABS_PATH . $id);
 432                     }
 433                     $this->messages->add('s', _('the link has been deleted successfully'));
 434                 }
 435                 else {
 436                     $this->messages->add('e', _('the link wasn\'t deleted'));
 437                     $msg = 'error : can\'t delete link #' . $id;
 438                 }
 439                 Tools::logm($msg);
 440                 Tools::redirect('?');
 441                 break;
 442             case 'toggle_fav' :
 443                 $this->store->favoriteById($id, $this->user->getId());
 444                 Tools::logm('mark as favorite link #' . $id);
 445                 if (!$import) {
 446                     Tools::redirect();
 447                 }
 448                 break;
 449             case 'toggle_archive' :
 450                 $this->store->archiveById($id, $this->user->getId());
 451                 Tools::logm('archive link #' . $id);
 452                 if (!$import) {
 453                     Tools::redirect();
 454                 }
 455                 break;
 456             case 'archive_all' :
 457                 $this->store->archiveAll($this->user->getId());
 458                 Tools::logm('archive all links');
 459                 if (!$import) {
 460                     Tools::redirect();
 461                 }
 462                 break;
 463             case 'add_tag' :
 464                 if($import){
 465                     $entry_id = $id;
 466                     $tags = explode(',', $tags);
 467                 }
 468                 else{
 469                     $tags = explode(',', $_POST['value']);
 470                     $entry_id = $_POST['entry_id'];
 471                 }
 472                 $entry = $this->store->retrieveOneById($entry_id, $this->user->getId());
 473                 if (!$entry) {
 474                     $this->messages->add('e', _('Article not found!'));
 475                     Tools::logm('error : article not found');
 476                     Tools::redirect();
 477                 }
 478                 foreach($tags as $key => $tag_value) {
 479                     $value = trim($tag_value);
 480                     $tag = $this->store->retrieveTagByValue($value);
 481
 482                     if (is_null($tag)) {
 483                         # we create the tag
 484                         $tag = $this->store->createTag($value);
 485                         $sequence = '';
 486                         if (STORAGE == 'postgres') {
 487                             $sequence = 'tags_id_seq';
 488                         }
 489                         $tag_id = $this->store->getLastId($sequence);
 490                     }
 491                     else {
 492                         $tag_id = $tag['id'];
 493                     }
 494
 495                     # we assign the tag to the article
 496                     $this->store->setTagToEntry($tag_id, $entry_id);
 497                 }
 498                 if(!$import) {
 499                     Tools::redirect();
 500                 }
 501                 break;
 502             case 'remove_tag' :
 503                 $tag_id = $_GET['tag_id'];
 504                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 505                 if (!$entry) {
 506                     $this->messages->add('e', _('Article not found!'));
 507                     Tools::logm('error : article not found');
 508                     Tools::redirect();
 509                 }
 510                 $this->store->removeTagForEntry($id, $tag_id);
 511                 Tools::redirect();
 512                 break;
 513             default:
 514                 break;
 515         }
 516     }
 517
 518     function displayView($view, $id = 0)
 519     {
 520         $tpl_vars = array();
 521
 522         switch ($view)
 523         {
 524             case 'config':
 525                 $dev = trim($this->getPocheVersion('dev'));
 526                 $prod = trim($this->getPocheVersion('prod'));
 527                 $compare_dev = version_compare(POCHE, $dev);
 528                 $compare_prod = version_compare(POCHE, $prod);
 529                 $themes = $this->getInstalledThemes();
 530                 $languages = $this->getInstalledLanguages();
 531                 $token = $this->user->getConfigValue('token');
 532                 $http_auth = (isset($_SERVER['PHP_AUTH_USER']) || isset($_SERVER['REMOTE_USER'])) ? true : false;
 533                 $tpl_vars = array(
 534                     'themes' => $themes,
 535                     'languages' => $languages,
 536                     'dev' => $dev,
 537                     'prod' => $prod,
 538                     'compare_dev' => $compare_dev,
 539                     'compare_prod' => $compare_prod,
 540                     'token' => $token,
 541                     'user_id' => $this->user->getId(),
 542                     'http_auth' => $http_auth,
 543                 );
 544                 Tools::logm('config view');
 545                 break;
 546             case 'edit-tags':
 547                 # tags
 548                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 549                 if (!$entry) {
 550                     $this->messages->add('e', _('Article not found!'));
 551                     Tools::logm('error : article not found');
 552                     Tools::redirect();
 553                 }
 554                 $tags = $this->store->retrieveTagsByEntry($id);
 555                 $tpl_vars = array(
 556                     'entry_id' => $id,
 557                     'tags' => $tags,
 558                 );
 559                 break;
 560             case 'tag':
 561                 $entries = $this->store->retrieveEntriesByTag($id, $this->user->getId());
 562                 $tag = $this->store->retrieveTag($id, $this->user->getId());
 563                 $tpl_vars = array(
 564                     'tag' => $tag,
 565                     'entries' => $entries,
 566                 );
 567                 break;
 568             case 'tags':
 569                 $token = $this->user->getConfigValue('token');
 570                 $tags = $this->store->retrieveAllTags($this->user->getId());
 571                 $tpl_vars = array(
 572                     'token' => $token,
 573                     'user_id' => $this->user->getId(),
 574                     'tags' => $tags,
 575                 );
 576                 break;
 577             case 'view':
 578                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 579                 if ($entry != NULL) {
 580                     Tools::logm('view link #' . $id);
 581                     $content = $entry['content'];
 582                     if (function_exists('tidy_parse_string')) {
 583                         $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
 584                         $tidy->cleanRepair();
 585                         $content = $tidy->value;
 586                     }
 587
 588                     # flattr checking
 589                     $flattr = new FlattrItem();
 590                     $flattr->checkItem($entry['url'], $entry['id']);
 591
 592                     # tags
 593                     $tags = $this->store->retrieveTagsByEntry($entry['id']);
 594
 595                     $tpl_vars = array(
 596                         'entry' => $entry,
 597                         'content' => $content,
 598                         'flattr' => $flattr,
 599                         'tags' => $tags
 600                     );
 601                 }
 602                 else {
 603                     Tools::logm('error in view call : entry is null');
 604                 }
 605                 break;
 606             default: # home, favorites and archive views
 607                 $entries = $this->store->getEntriesByView($view, $this->user->getId());
 608                 $tpl_vars = array(
 609                     'entries' => '',
 610                     'page_links' => '',
 611                     'nb_results' => '',
 612                 );
 613
 614                 if (count($entries) > 0) {
 615                     $this->pagination->set_total(count($entries));
 616                     $page_links = str_replace(array('previous', 'next'), array(_('previous'), _('next')),
 617                         $this->pagination->page_links('?view=' . $view . '&sort=' . $_SESSION['sort'] . '&'));
 618                     $datas = $this->store->getEntriesByView($view, $this->user->getId(), $this->pagination->get_limit());
 619                     $tpl_vars['entries'] = $datas;
 620                     $tpl_vars['page_links'] = $page_links;
 621                     $tpl_vars['nb_results'] = count($entries);
 622                 }
 623                 Tools::logm('display ' . $view . ' view');
 624                 break;
 625         }
 626
 627         return $tpl_vars;
 628     }
 629
 630     /**
 631      * update the password of the current user.
 632      * if MODE_DEMO is TRUE, the password can't be updated.
 633      * @todo add the return value
 634      * @todo set the new password in function header like this updatePassword($newPassword)
 635      * @return boolean
 636      */
 637     public function updatePassword()
 638     {
 639         if (MODE_DEMO) {
 640             $this->messages->add('i', _('in demo mode, you can\'t update your password'));
 641             Tools::logm('in demo mode, you can\'t do this');
 642             Tools::redirect('?view=config');
 643         }
 644         else {
 645             if (isset($_POST['password']) && isset($_POST['password_repeat'])) {
 646                 if ($_POST['password'] == $_POST['password_repeat'] && $_POST['password'] != "") {
 647                     $this->messages->add('s', _('your password has been updated'));
 648                     $this->store->updatePassword($this->user->getId(), Tools::encodeString($_POST['password'] . $this->user->getUsername()));
 649                     Session::logout();
 650                     Tools::logm('password updated');
 651                     Tools::redirect();
 652                 }
 653                 else {
 654                     $this->messages->add('e', _('the two fields have to be filled & the password must be the same in the two fields'));
 655                     Tools::redirect('?view=config');
 656                 }
 657             }
 658         }
 659     }
 660
 661     public function updateTheme()
 662     {
 663         # no data
 664         if (empty($_POST['theme'])) {
 665         }
 666
 667         # we are not going to change it to the current theme...
 668         if ($_POST['theme'] == $this->getTheme()) {
 669             $this->messages->add('w', _('still using the "' . $this->getTheme() . '" theme!'));
 670             Tools::redirect('?view=config');
 671         }
 672
 673         $themes = $this->getInstalledThemes();
 674         $actualTheme = false;
 675
 676         foreach (array_keys($themes) as $theme) {
 677             if ($theme == $_POST['theme']) {
 678                 $actualTheme = true;
 679                 break;
 680             }
 681         }
 682
 683         if (! $actualTheme) {
 684             $this->messages->add('e', _('that theme does not seem to be installed'));
 685             Tools::redirect('?view=config');
 686         }
 687
 688         $this->store->updateUserConfig($this->user->getId(), 'theme', $_POST['theme']);
 689         $this->messages->add('s', _('you have changed your theme preferences'));
 690
 691         $currentConfig = $_SESSION['poche_user']->config;
 692         $currentConfig['theme'] = $_POST['theme'];
 693
 694         $_SESSION['poche_user']->setConfig($currentConfig);
 695
 696         Tools::redirect('?view=config');
 697     }
 698
 699     public function updateLanguage()
 700     {
 701         # no data
 702         if (empty($_POST['language'])) {
 703         }
 704
 705         # we are not going to change it to the current language...
 706         if ($_POST['language'] == $this->getLanguage()) {
 707             $this->messages->add('w', _('still using the "' . $this->getLanguage() . '" language!'));
 708             Tools::redirect('?view=config');
 709         }
 710
 711         $languages = $this->getInstalledLanguages();
 712         $actualLanguage = false;
 713
 714         foreach ($languages as $language) {
 715             if ($language['name'] == $_POST['language']) {
 716                 $actualLanguage = true;
 717                 break;
 718             }
 719         }
 720
 721         if (! $actualLanguage) {
 722             $this->messages->add('e', _('that language does not seem to be installed'));
 723             Tools::redirect('?view=config');
 724         }
 725
 726         $this->store->updateUserConfig($this->user->getId(), 'language', $_POST['language']);
 727         $this->messages->add('s', _('you have changed your language preferences'));
 728
 729         $currentConfig = $_SESSION['poche_user']->config;
 730         $currentConfig['language'] = $_POST['language'];
 731
 732         $_SESSION['poche_user']->setConfig($currentConfig);
 733
 734         Tools::redirect('?view=config');
 735     }
 736
 737     /**
 738      * get credentials from differents sources
 739      * it redirects the user to the $referer link
 740      * @return array
 741      */
 742     private function credentials() {
 743         if(isset($_SERVER['PHP_AUTH_USER'])) {
 744             return array($_SERVER['PHP_AUTH_USER'],'php_auth',true);
 745         }
 746         if(!empty($_POST['login']) && !empty($_POST['password'])) {
 747             return array($_POST['login'],$_POST['password'],false);
 748         }
 749         if(isset($_SERVER['REMOTE_USER'])) {
 750             return array($_SERVER['REMOTE_USER'],'http_auth',true);
 751         }
 752
 753         return array(false,false,false);
 754     }
 755
 756     /**
 757      * checks if login & password are correct and save the user in session.
 758      * it redirects the user to the $referer link
 759      * @param  string $referer the url to redirect after login
 760      * @todo add the return value
 761      * @return boolean
 762      */
 763     public function login($referer)
 764     {
 765         list($login,$password,$isauthenticated)=$this->credentials();
 766         if($login === false || $password === false) {
 767             $this->messages->add('e', _('login failed: you have to fill all fields'));
 768             Tools::logm('login failed');
 769             Tools::redirect();
 770         }
 771         if (!empty($login) && !empty($password)) {
 772             $user = $this->store->login($login, Tools::encodeString($password . $login), $isauthenticated);
 773             if ($user != array()) {
 774                 # Save login into Session
 775                 $longlastingsession = isset($_POST['longlastingsession']);
 776                 $passwordTest = ($isauthenticated) ? $user['password'] : Tools::encodeString($password . $login);
 777                 Session::login($user['username'], $user['password'], $login, $passwordTest, $longlastingsession, array('poche_user' => new User($user)));
 778                 $this->messages->add('s', _('welcome to your wallabag'));
 779                 Tools::logm('login successful');
 780                 Tools::redirect($referer);
 781             }
 782             $this->messages->add('e', _('login failed: bad login or password'));
 783             Tools::logm('login failed');
 784             Tools::redirect();
 785         }
 786     }
 787
 788     /**
 789      * log out the poche user. It cleans the session.
 790      * @todo add the return value
 791      * @return boolean
 792      */
 793     public function logout()
 794     {
 795         $this->user = array();
 796         Session::logout();
 797         Tools::logm('logout');
 798         Tools::redirect();
 799     }
 800
 801     /**
 802      * import from Instapaper. poche needs a ./instapaper-export.html file
 803      * @todo add the return value
 804      * @param string $targetFile the file used for importing
 805      * @return boolean
 806      */
 807     private function importFromInstapaper($targetFile)
 808     {
 809         # TODO gestion des articles favs
 810         $html = new simple_html_dom();
 811         $html->load_file($targetFile);
 812         Tools::logm('starting import from instapaper');
 813
 814         $read = 0;
 815         $errors = array();
 816         foreach($html->find('ol') as $ul)
 817         {
 818             foreach($ul->find('li') as $li)
 819             {
 820                 $a = $li->find('a');
 821                 $url = new Url(base64_encode($a[0]->href));
 822                 $this->action('add', $url, 0, TRUE);
 823                 if ($read == '1') {
 824                     $sequence = '';
 825                     if (STORAGE == 'postgres') {
 826                         $sequence = 'entries_id_seq';
 827                     }
 828                     $last_id = $this->store->getLastId($sequence);
 829                     $this->action('toggle_archive', $url, $last_id, TRUE);
 830                 }
 831             }
 832
 833             # the second <ol> is for read links
 834             $read = 1;
 835         }
 836         $this->messages->add('s', _('import from instapaper completed'));
 837         Tools::logm('import from instapaper completed');
 838         Tools::redirect();
 839     }
 840
 841     /**
 842      * import from Pocket. poche needs a ./ril_export.html file
 843      * @todo add the return value
 844      * @param string $targetFile the file used for importing
 845      * @return boolean
 846      */
 847     private function importFromPocket($targetFile)
 848     {
 849         # TODO gestion des articles favs
 850         $html = new simple_html_dom();
 851         $html->load_file($targetFile);
 852         Tools::logm('starting import from pocket');
 853
 854         $read = 0;
 855         $errors = array();
 856         foreach($html->find('ul') as $ul)
 857         {
 858             foreach($ul->find('li') as $li)
 859             {
 860                 $a = $li->find('a');
 861                 $url = new Url(base64_encode($a[0]->href));
 862                 $this->action('add', $url, 0, TRUE);
 863                 $sequence = '';
 864                 if (STORAGE == 'postgres') {
 865                     $sequence = 'entries_id_seq';
 866                 }
 867                 $last_id = $this->store->getLastId($sequence);
 868                 if ($read == '1') {
 869                     $this->action('toggle_archive', $url, $last_id, TRUE);
 870                 }
 871                 $tags = $a[0]->tags;
 872                 if(!empty($tags)) {
 873                     $this->action('add_tag',$url,$last_id,true,false,$tags);
 874                 }
 875             }
 876
 877             # the second <ul> is for read links
 878             $read = 1;
 879         }
 880         $this->messages->add('s', _('import from pocket completed'));
 881         Tools::logm('import from pocket completed');
 882         Tools::redirect();
 883     }
 884
 885     /**
 886      * import from Readability. poche needs a ./readability file
 887      * @todo add the return value
 888      * @param string $targetFile the file used for importing
 889      * @return boolean
 890      */
 891     private function importFromReadability($targetFile)
 892     {
 893         # TODO gestion des articles lus / favs
 894         $str_data = file_get_contents($targetFile);
 895         $data = json_decode($str_data,true);
 896         Tools::logm('starting import from Readability');
 897         $count = 0;
 898         foreach ($data as $key => $value) {
 899             $url = NULL;
 900             $favorite = FALSE;
 901             $archive = FALSE;
 902             foreach ($value as $item) {
 903                 foreach ($item as $attr => $value) {
 904                     if ($attr == 'article__url') {
 905                         $url = new Url(base64_encode($value));
 906                     }
 907                     $sequence = '';
 908                     if (STORAGE == 'postgres') {
 909                         $sequence = 'entries_id_seq';
 910                     }
 911                     if ($value == 'true') {
 912                         if ($attr == 'favorite') {
 913                             $favorite = TRUE;
 914                         }
 915                         if ($attr == 'archive') {
 916                             $archive = TRUE;
 917                         }
 918                     }
 919                 }
 920
 921                 # we can add the url
 922                 if (!is_null($url) && $url->isCorrect()) {
 923                     $this->action('add', $url, 0, TRUE);
 924                     $count++;
 925                     if ($favorite) {
 926                         $last_id = $this->store->getLastId($sequence);
 927                         $this->action('toggle_fav', $url, $last_id, TRUE);
 928                     }
 929                     if ($archive) {
 930                         $last_id = $this->store->getLastId($sequence);
 931                         $this->action('toggle_archive', $url, $last_id, TRUE);
 932                     }
 933                 }
 934             }
 935         }
 936         $this->messages->add('s', _('import from Readability completed. ' . $count . ' new links.'));
 937         Tools::logm('import from Readability completed');
 938         Tools::redirect();
 939     }
 940
 941     /**
 942      * import from Poche exported file
 943      * @param string $targetFile the file used for importing
 944      * @return boolean
 945      */
 946     private function importFromPoche($targetFile)
 947     {
 948         $str_data = file_get_contents($targetFile);
 949         $data = json_decode($str_data,true);
 950         Tools::logm('starting import from Poche');
 951
 952
 953         $sequence = '';
 954         if (STORAGE == 'postgres') {
 955             $sequence = 'entries_id_seq';
 956         }
 957
 958         $count = 0;
 959         foreach ($data as $value) {
 960
 961             $url = new Url(base64_encode($value['url']));
 962             $favorite = ($value['is_fav'] == -1);
 963             $archive = ($value['is_read'] == -1);
 964
 965             # we can add the url
 966             if (!is_null($url) && $url->isCorrect()) {
 967
 968                 $this->action('add', $url, 0, TRUE);
 969
 970                 $count++;
 971                 if ($favorite) {
 972                     $last_id = $this->store->getLastId($sequence);
 973                     $this->action('toggle_fav', $url, $last_id, TRUE);
 974                 }
 975                 if ($archive) {
 976                     $last_id = $this->store->getLastId($sequence);
 977                     $this->action('toggle_archive', $url, $last_id, TRUE);
 978                 }
 979             }
 980
 981         }
 982         $this->messages->add('s', _('import from Poche completed. ' . $count . ' new links.'));
 983         Tools::logm('import from Poche completed');
 984         Tools::redirect();
 985     }
 986
 987     /**
 988      * import datas into your poche
 989      * @param  string $from name of the service to import : pocket, instapaper or readability
 990      * @todo add the return value
 991      * @return boolean
 992      */
 993     public function import($from)
 994     {
 995         $providers = array(
 996             'pocket' => 'importFromPocket',
 997             'readability' => 'importFromReadability',
 998             'instapaper' => 'importFromInstapaper',
 999             'poche' => 'importFromPoche',
1000         );
1001
1002         if (! isset($providers[$from])) {
1003             $this->messages->add('e', _('Unknown import provider.'));
1004             Tools::redirect();
1005         }
1006
1007         $targetDefinition = 'IMPORT_' . strtoupper($from) . '_FILE';
1008         $targetFile = constant($targetDefinition);
1009
1010         if (! defined($targetDefinition)) {
1011             $this->messages->add('e', _('Incomplete inc/poche/define.inc.php file, please define "' . $targetDefinition . '".'));
1012             Tools::redirect();
1013         }
1014
1015         if (! file_exists($targetFile)) {
1016             $this->messages->add('e', _('Could not find required "' . $targetFile . '" import file.'));
1017             Tools::redirect();
1018         }
1019
1020         $this->$providers[$from]($targetFile);
1021     }
1022
1023     /**
1024      * export poche entries in json
1025      * @return json all poche entries
1026      */
1027     public function export()
1028     {
1029         $entries = $this->store->retrieveAll($this->user->getId());
1030         echo $this->tpl->render('export.twig', array(
1031             'export' => Tools::renderJson($entries),
1032         ));
1033         Tools::logm('export view');
1034     }
1035
1036     /**
1037      * Checks online the latest version of poche and cache it
1038      * @param  string $which 'prod' or 'dev'
1039      * @return string        latest $which version
1040      */
1041     private function getPocheVersion($which = 'prod')
1042     {
1043         $cache_file = CACHE . '/' . $which;
1044
1045         # checks if the cached version file exists
1046         if (file_exists($cache_file) && (filemtime($cache_file) > (time() - 86400 ))) {
1047            $version = file_get_contents($cache_file);
1048         } else {
1049            $version = file_get_contents('http://static.wallabag.org/versions/' . $which);
1050            file_put_contents($cache_file, $version, LOCK_EX);
1051         }
1052         return $version;
1053     }
1054
1055     public function generateToken()
1056     {
1057         if (ini_get('open_basedir') === '') {
1058             $token = substr(base64_encode(file_get_contents('/dev/urandom', false, null, 0, 20)), 0, 15);
1059         }
1060         else {
1061             $token = substr(base64_encode(uniqid(mt_rand(), true)), 0, 20);
1062         }
1063
1064         $token = str_replace('+', '', $token);
1065         $this->store->updateUserConfig($this->user->getId(), 'token', $token);
1066         $currentConfig = $_SESSION['poche_user']->config;
1067         $currentConfig['token'] = $token;
1068         $_SESSION['poche_user']->setConfig($currentConfig);
1069     }
1070
1071     public function generateFeeds($token, $user_id, $tag_id, $type = 'home')
1072     {
1073         $allowed_types = array('home', 'fav', 'archive', 'tag');
1074         $config = $this->store->getConfigUser($user_id);
1075
1076         if (!in_array($type, $allowed_types) ||
1077             $token != $config['token']) {
1078             die(_('Uh, there is a problem while generating feeds.'));
1079         }
1080         // Check the token
1081
1082         $feed = new FeedWriter(RSS2);
1083         $feed->setTitle('wallabag — ' . $type . ' feed');
1084         $feed->setLink(Tools::getPocheUrl());
1085         $feed->setChannelElement('updated', date(DATE_RSS , time()));
1086         $feed->setChannelElement('author', 'wallabag');
1087
1088         if ($type == 'tag') {
1089             $entries = $this->store->retrieveEntriesByTag($tag_id, $user_id);
1090         }
1091         else {
1092             $entries = $this->store->getEntriesByView($type, $user_id);
1093         }
1094
1095         if (count($entries) > 0) {
1096             foreach ($entries as $entry) {
1097                 $newItem = $feed->createNewItem();
1098                 $newItem->setTitle($entry['title']);
1099                 $newItem->setLink(Tools::getPocheUrl() . '?view=view&amp;id=' . $entry['id']);
1100                 $newItem->setDate(time());
1101                 $newItem->setDescription($entry['content']);
1102                 $feed->addItem($newItem);
1103             }
1104         }
1105
1106         $feed->genarateFeed();
1107         exit;
1108     }
1109
1110     public function emptyCache() {
1111         $files = new RecursiveIteratorIterator(
1112             new RecursiveDirectoryIterator(CACHE, RecursiveDirectoryIterator::SKIP_DOTS),
1113             RecursiveIteratorIterator::CHILD_FIRST
1114         );
1115
1116         foreach ($files as $fileinfo) {
1117             $todo = ($fileinfo->isDir() ? 'rmdir' : 'unlink');
1118             $todo($fileinfo->getRealPath());
1119         }
1120
1121         Tools::logm('empty cache');
1122         $this->messages->add('s', _('Cache deleted.'));
1123         Tools::redirect();
1124     }
1125 }