inc/poche/Poche.class.php

   1 <?php
   2 /**
   3  * poche, a read it later open source system
   4  *
   5  * @category   poche
   6  * @author     Nicolas Lœuillet <support@inthepoche.com>
   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 $notInstalledMessage = '';
  24
  25     # @todo make this dynamic (actually install themes and save them in the database including author information et cetera)
  26     private $installedThemes = array(
  27         'default' => array('requires' => array()),
  28         'dark' => array('requires' => array('default')),
  29         'dmagenta' => array('requires' => array('default')),
  30         'solarized' => array('requires' => array('default')),
  31         'solarized-dark' => array('requires' => array('default'))
  32     );
  33
  34     public function __construct()
  35     {
  36         if (! $this->configFileIsAvailable()) {
  37             return;
  38         }
  39
  40         $this->init();
  41
  42         if (! $this->themeIsInstalled()) {
  43             return;
  44         }
  45
  46         $this->initTpl();
  47
  48         if (! $this->systemIsInstalled()) {
  49             return;
  50         }
  51
  52         $this->store = new Database();
  53         $this->messages = new Messages();
  54
  55         # installation
  56         if (! $this->store->isInstalled()) {
  57             $this->install();
  58         }
  59     }
  60
  61     private function init()
  62     {
  63         Tools::initPhp();
  64         Session::$sessionName = 'poche';
  65         Session::init();
  66
  67         if (isset($_SESSION['poche_user']) && $_SESSION['poche_user'] != array()) {
  68             $this->user = $_SESSION['poche_user'];
  69         } else {
  70             # fake user, just for install & login screens
  71             $this->user = new User();
  72             $this->user->setConfig($this->getDefaultConfig());
  73         }
  74
  75         # l10n
  76         $language = $this->user->getConfigValue('language');
  77         putenv('LC_ALL=' . $language);
  78         setlocale(LC_ALL, $language);
  79         bindtextdomain($language, LOCALE);
  80         textdomain($language);
  81
  82         # Pagination
  83         $this->pagination = new Paginator($this->user->getConfigValue('pager'), 'p');
  84
  85         # Set up theme
  86         $themeDirectory = $this->user->getConfigValue('theme');
  87
  88         if ($themeDirectory === false) {
  89             $themeDirectory = DEFAULT_THEME;
  90         }
  91
  92         $this->currentTheme = $themeDirectory;
  93     }
  94
  95     public function configFileIsAvailable() {
  96         if (! self::$configFileAvailable) {
  97             $this->notInstalledMessage = 'You have to rename <strong>inc/poche/config.inc.php.new</strong> to <strong>inc/poche/config.inc.php</strong>.';
  98
  99             return false;
 100         }
 101
 102         return true;
 103     }
 104
 105     public function themeIsInstalled() {
 106         # Twig is an absolute requirement for Poche to function. Abort immediately if the Composer installer hasn't been run yet
 107         if (! self::$canRenderTemplates) {
 108             $this->notInstalledMessage = 'Twig does not seem to be installed. Please initialize the Composer installation to automatically fetch dependencies. Have a look at <a href="http://inthepoche.com/?pages/Documentation">the documentation.</a>';
 109
 110             return false;
 111         }
 112
 113         # Check if the selected theme and its requirements are present
 114         if (! is_dir(THEME . '/' . $this->getTheme())) {
 115             $this->notInstalledMessage = 'The currently selected theme (' . $this->getTheme() . ') does not seem to be properly installed (Missing directory: ' . THEME . '/' . $this->getTheme() . ')';
 116
 117             self::$canRenderTemplates = false;
 118
 119             return false;
 120         }
 121
 122         foreach ($this->installedThemes[$this->getTheme()]['requires'] as $requiredTheme) {
 123             if (! is_dir(THEME . '/' . $requiredTheme)) {
 124                 $this->notInstalledMessage = 'The required "' . $requiredTheme . '" theme is missing for the current theme (' . $this->getTheme() . ')';
 125
 126                 self::$canRenderTemplates = false;
 127
 128                 return false;
 129             }
 130         }
 131
 132         return true;
 133     }
 134
 135     /**
 136      * all checks before installation.
 137      * @todo move HTML to template
 138      * @return boolean
 139      */
 140     public function systemIsInstalled()
 141     {
 142         $msg = '';
 143
 144         $configSalt = defined('SALT') ? constant('SALT') : '';
 145
 146         if (empty($configSalt)) {
 147             $msg = '<h1>error</h1><p>You have not yet filled in the SALT value in the config.inc.php file.</p>';
 148         } else if (! is_writable(CACHE)) {
 149             Tools::logm('you don\'t have write access on cache directory');
 150             $msg = '<h1>error</h1><p>You don\'t have write access on cache directory.</p>';
 151         } else if (STORAGE == 'sqlite' && ! file_exists(STORAGE_SQLITE)) {
 152             Tools::logm('sqlite file doesn\'t exist');
 153             $msg = '<h1>error</h1><p>sqlite file doesn\'t exist, you can find it in install folder. Copy it in /db folder.</p>';
 154         } else if (file_exists(ROOT . '/install/update.php') && ! DEBUG_POCHE) {
 155             $msg = '<h1>setup</h1><p><strong>It\'s your first time here?</strong> Please copy /install/poche.sqlite in db folder. Then, delete install folder.<br /><strong>If you have already installed poche</strong>, an update is needed <a href="install/update.php">by clicking here</a>.</p>';
 156         } else if (is_dir(ROOT . '/install') && ! DEBUG_POCHE) {
 157             $msg = '<h1>setup</h1><p><strong>If you want to update your poche</strong>, you just have to delete /install folder. <br /><strong>To install your poche with sqlite</strong>, copy /install/poche.sqlite in /db and delete the folder /install. you have to delete the /install folder before using poche.</p>';
 158         } else if (STORAGE == 'sqlite' && ! is_writable(STORAGE_SQLITE)) {
 159             Tools::logm('you don\'t have write access on sqlite file');
 160             $msg = '<h1>error</h1><p>You don\'t have write access on sqlite file.</p>';
 161         }
 162
 163         if (! empty($msg)) {
 164             $this->notInstalledMessage = $msg;
 165
 166             return false;
 167         }
 168
 169         return true;
 170     }
 171
 172     public function getNotInstalledMessage() {
 173         return $this->notInstalledMessage;
 174     }
 175
 176     private function initTpl()
 177     {
 178         $loaderChain = new Twig_Loader_Chain();
 179
 180         # add the current theme as first to the loader chain so Twig will look there first for overridden template files
 181         try {
 182             $loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . $this->getTheme()));
 183         } catch (Twig_Error_Loader $e) {
 184             # @todo isInstalled() should catch this, inject Twig later
 185             die('The currently selected theme (' . $this->getTheme() . ') does not seem to be properly installed (' . THEME . '/' . $this->getTheme() .' is missing)');
 186         }
 187
 188         # add all required themes to the loader chain
 189         foreach ($this->installedThemes[$this->getTheme()]['requires'] as $requiredTheme) {
 190             try {
 191                 $loaderChain->addLoader(new Twig_Loader_Filesystem(THEME . '/' . DEFAULT_THEME));
 192             } catch (Twig_Error_Loader $e) {
 193                 # @todo isInstalled() should catch this, inject Twig later
 194                 die('The required "' . $requiredTheme . '" theme is missing for the current theme (' . $this->getTheme() . ')');
 195             }
 196         }
 197
 198         if (DEBUG_POCHE) {
 199             $twig_params = array();
 200         } else {
 201             $twig_params = array('cache' => CACHE);
 202         }
 203
 204         $this->tpl = new Twig_Environment($loaderChain, $twig_params);
 205         $this->tpl->addExtension(new Twig_Extensions_Extension_I18n());
 206
 207         # filter to display domain name of an url
 208         $filter = new Twig_SimpleFilter('getDomain', 'Tools::getDomain');
 209         $this->tpl->addFilter($filter);
 210
 211         # filter for reading time
 212         $filter = new Twig_SimpleFilter('getReadingTime', 'Tools::getReadingTime');
 213         $this->tpl->addFilter($filter);
 214
 215         # filter for simple filenames in config view
 216         $filter = new Twig_SimpleFilter('getPrettyFilename', function($string) { return str_replace(ROOT, '', $string); });
 217         $this->tpl->addFilter($filter);
 218     }
 219
 220     private function install()
 221     {
 222         Tools::logm('poche still not installed');
 223         echo $this->tpl->render('install.twig', array(
 224             'token' => Session::getToken(),
 225             'theme' => $this->getTheme(),
 226             'poche_url' => Tools::getPocheUrl()
 227         ));
 228         if (isset($_GET['install'])) {
 229             if (($_POST['password'] == $_POST['password_repeat'])
 230                 && $_POST['password'] != "" && $_POST['login'] != "") {
 231                 # let's rock, install poche baby !
 232                 if ($this->store->install($_POST['login'], Tools::encodeString($_POST['password'] . $_POST['login'])))
 233                 {
 234                     Session::logout();
 235                     Tools::logm('poche is now installed');
 236                     Tools::redirect();
 237                 }
 238             }
 239             else {
 240                 Tools::logm('error during installation');
 241                 Tools::redirect();
 242             }
 243         }
 244         exit();
 245     }
 246
 247     public function getTheme() {
 248         return $this->currentTheme;
 249     }
 250
 251     public function getInstalledThemes() {
 252         $handle = opendir(THEME);
 253         $themes = array();
 254
 255         while (($theme = readdir($handle)) !== false) {
 256             # Themes are stored in a directory, so all directory names are themes
 257             # @todo move theme installation data to database
 258             if (! is_dir(THEME . '/' . $theme) || in_array($theme, array('..', '.'))) {
 259                 continue;
 260             }
 261
 262             $current = false;
 263
 264             if ($theme === $this->getTheme()) {
 265                 $current = true;
 266             }
 267
 268             $themes[] = array('name' => $theme, 'current' => $current);
 269         }
 270
 271         return $themes;
 272     }
 273
 274     public function getDefaultConfig()
 275     {
 276         return array(
 277             'pager' => PAGINATION,
 278             'language' => LANG,
 279             'theme' => DEFAULT_THEME
 280         );
 281     }
 282
 283     /**
 284      * Call action (mark as fav, archive, delete, etc.)
 285      */
 286     public function action($action, Url $url, $id = 0, $import = FALSE)
 287     {
 288         switch ($action)
 289         {
 290             case 'add':
 291                 $content = $url->extract();
 292
 293                 if ($this->store->add($url->getUrl(), $content['title'], $content['body'], $this->user->getId())) {
 294                     Tools::logm('add link ' . $url->getUrl());
 295                     $sequence = '';
 296                     if (STORAGE == 'postgres') {
 297                         $sequence = 'entries_id_seq';
 298                     }
 299                     $last_id = $this->store->getLastId($sequence);
 300                     if (DOWNLOAD_PICTURES) {
 301                         $content = filtre_picture($content['body'], $url->getUrl(), $last_id);
 302                         Tools::logm('updating content article');
 303                         $this->store->updateContent($last_id, $content, $this->user->getId());
 304                     }
 305                     if (!$import) {
 306                         $this->messages->add('s', _('the link has been added successfully'));
 307                     }
 308                 }
 309                 else {
 310                     if (!$import) {
 311                         $this->messages->add('e', _('error during insertion : the link wasn\'t added'));
 312                         Tools::logm('error during insertion : the link wasn\'t added ' . $url->getUrl());
 313                     }
 314                 }
 315
 316                 if (!$import) {
 317                     Tools::redirect('?view=home');
 318                 }
 319                 break;
 320             case 'delete':
 321                 $msg = 'delete link #' . $id;
 322                 if ($this->store->deleteById($id, $this->user->getId())) {
 323                     if (DOWNLOAD_PICTURES) {
 324                         remove_directory(ABS_PATH . $id);
 325                     }
 326                     $this->messages->add('s', _('the link has been deleted successfully'));
 327                 }
 328                 else {
 329                     $this->messages->add('e', _('the link wasn\'t deleted'));
 330                     $msg = 'error : can\'t delete link #' . $id;
 331                 }
 332                 Tools::logm($msg);
 333                 Tools::redirect('?');
 334                 break;
 335             case 'toggle_fav' :
 336                 $this->store->favoriteById($id, $this->user->getId());
 337                 Tools::logm('mark as favorite link #' . $id);
 338                 if (!$import) {
 339                     Tools::redirect();
 340                 }
 341                 break;
 342             case 'toggle_archive' :
 343                 $this->store->archiveById($id, $this->user->getId());
 344                 Tools::logm('archive link #' . $id);
 345                 if (!$import) {
 346                     Tools::redirect();
 347                 }
 348                 break;
 349             default:
 350                 break;
 351         }
 352     }
 353
 354     function displayView($view, $id = 0)
 355     {
 356         $tpl_vars = array();
 357
 358         switch ($view)
 359         {
 360             case 'config':
 361                 $dev = $this->getPocheVersion('dev');
 362                 $prod = $this->getPocheVersion('prod');
 363                 $compare_dev = version_compare(POCHE_VERSION, $dev);
 364                 $compare_prod = version_compare(POCHE_VERSION, $prod);
 365                 $themes = $this->getInstalledThemes();
 366                 $tpl_vars = array(
 367                     'themes' => $themes,
 368                     'dev' => $dev,
 369                     'prod' => $prod,
 370                     'compare_dev' => $compare_dev,
 371                     'compare_prod' => $compare_prod,
 372                 );
 373                 Tools::logm('config view');
 374                 break;
 375             case 'view':
 376                 $entry = $this->store->retrieveOneById($id, $this->user->getId());
 377                 if ($entry != NULL) {
 378                     Tools::logm('view link #' . $id);
 379                     $content = $entry['content'];
 380                     if (function_exists('tidy_parse_string')) {
 381                         $tidy = tidy_parse_string($content, array('indent'=>true, 'show-body-only' => true), 'UTF8');
 382                         $tidy->cleanRepair();
 383                         $content = $tidy->value;
 384                     }
 385
 386                     # flattr checking
 387                     $flattr = new FlattrItem();
 388                     $flattr->checkItem($entry['url']);
 389
 390                     $tpl_vars = array(
 391                     'entry' => $entry,
 392                     'content' => $content,
 393                     'flattr' => $flattr
 394                     );
 395                 }
 396                 else {
 397                     Tools::logm('error in view call : entry is null');
 398                 }
 399                 break;
 400             default: # home, favorites and archive views
 401                 $entries = $this->store->getEntriesByView($view, $this->user->getId());
 402                 $tpl_vars = array(
 403                     'entries' => '',
 404                     'page_links' => '',
 405                     'nb_results' => '',
 406                 );
 407                 if (count($entries) > 0) {
 408                     $this->pagination->set_total(count($entries));
 409                     $page_links = $this->pagination->page_links('?view=' . $view . '&sort=' . $_SESSION['sort'] . '&');
 410                     $datas = $this->store->getEntriesByView($view, $this->user->getId(), $this->pagination->get_limit());
 411                     $tpl_vars['entries'] = $datas;
 412                     $tpl_vars['page_links'] = $page_links;
 413                     $tpl_vars['nb_results'] = count($entries);
 414                 }
 415                 Tools::logm('display ' . $view . ' view');
 416                 break;
 417         }
 418
 419         return $tpl_vars;
 420     }
 421
 422     /**
 423      * update the password of the current user.
 424      * if MODE_DEMO is TRUE, the password can't be updated.
 425      * @todo add the return value
 426      * @todo set the new password in function header like this updatePassword($newPassword)
 427      * @return boolean
 428      */
 429     public function updatePassword()
 430     {
 431         if (MODE_DEMO) {
 432             $this->messages->add('i', _('in demo mode, you can\'t update your password'));
 433             Tools::logm('in demo mode, you can\'t do this');
 434             Tools::redirect('?view=config');
 435         }
 436         else {
 437             if (isset($_POST['password']) && isset($_POST['password_repeat'])) {
 438                 if ($_POST['password'] == $_POST['password_repeat'] && $_POST['password'] != "") {
 439                     $this->messages->add('s', _('your password has been updated'));
 440                     $this->store->updatePassword($this->user->getId(), Tools::encodeString($_POST['password'] . $this->user->getUsername()));
 441                     Session::logout();
 442                     Tools::logm('password updated');
 443                     Tools::redirect();
 444                 }
 445                 else {
 446                     $this->messages->add('e', _('the two fields have to be filled & the password must be the same in the two fields'));
 447                     Tools::redirect('?view=config');
 448                 }
 449             }
 450         }
 451     }
 452
 453     public function updateTheme()
 454     {
 455         # no data
 456         if (empty($_POST['theme'])) {
 457         }
 458
 459         # we are not going to change it to the current theme...
 460         if ($_POST['theme'] == $this->getTheme()) {
 461             $this->messages->add('w', _('still using the "' . $this->getTheme() . '" theme!'));
 462             Tools::redirect('?view=config');
 463         }
 464
 465         $themes = $this->getInstalledThemes();
 466         $actualTheme = false;
 467
 468         foreach ($themes as $theme) {
 469             if ($theme['name'] == $_POST['theme']) {
 470                 $actualTheme = true;
 471                 break;
 472             }
 473         }
 474
 475         if (! $actualTheme) {
 476             $this->messages->add('e', _('that theme does not seem to be installed'));
 477             Tools::redirect('?view=config');
 478         }
 479
 480         $this->store->updateUserConfig($this->user->getId(), 'theme', $_POST['theme']);
 481         $this->messages->add('s', _('you have changed your theme preferences'));
 482
 483         $currentConfig = $_SESSION['poche_user']->config;
 484         $currentConfig['theme'] = $_POST['theme'];
 485
 486         $_SESSION['poche_user']->setConfig($currentConfig);
 487
 488         Tools::redirect('?view=config');
 489     }
 490
 491     /**
 492      * checks if login & password are correct and save the user in session.
 493      * it redirects the user to the $referer link
 494      * @param  string $referer the url to redirect after login
 495      * @todo add the return value
 496      * @return boolean
 497      */
 498     public function login($referer)
 499     {
 500         if (!empty($_POST['login']) && !empty($_POST['password'])) {
 501             $user = $this->store->login($_POST['login'], Tools::encodeString($_POST['password'] . $_POST['login']));
 502             if ($user != array()) {
 503                 # Save login into Session
 504                 Session::login($user['username'], $user['password'], $_POST['login'], Tools::encodeString($_POST['password'] . $_POST['login']), array('poche_user' => new User($user)));
 505                 $this->messages->add('s', _('welcome to your poche'));
 506                 Tools::logm('login successful');
 507                 Tools::redirect($referer);
 508             }
 509             $this->messages->add('e', _('login failed: bad login or password'));
 510             Tools::logm('login failed');
 511             Tools::redirect();
 512         } else {
 513             $this->messages->add('e', _('login failed: you have to fill all fields'));
 514             Tools::logm('login failed');
 515             Tools::redirect();
 516         }
 517     }
 518
 519     /**
 520      * log out the poche user. It cleans the session.
 521      * @todo add the return value
 522      * @return boolean
 523      */
 524     public function logout()
 525     {
 526         $this->user = array();
 527         Session::logout();
 528         $this->messages->add('s', _('see you soon!'));
 529         Tools::logm('logout');
 530         Tools::redirect();
 531     }
 532
 533     /**
 534      * import from Instapaper. poche needs a ./instapaper-export.html file
 535      * @todo add the return value
 536      * @param string $targetFile the file used for importing
 537      * @return boolean
 538      */
 539     private function importFromInstapaper($targetFile)
 540     {
 541         # TODO gestion des articles favs
 542         $html = new simple_html_dom();
 543         $html->load_file($targetFile);
 544         Tools::logm('starting import from instapaper');
 545
 546         $read = 0;
 547         $errors = array();
 548         foreach($html->find('ol') as $ul)
 549         {
 550             foreach($ul->find('li') as $li)
 551             {
 552                 $a = $li->find('a');
 553                 $url = new Url(base64_encode($a[0]->href));
 554                 $this->action('add', $url, 0, TRUE);
 555                 if ($read == '1') {
 556                     $sequence = '';
 557                     if (STORAGE == 'postgres') {
 558                         $sequence = 'entries_id_seq';
 559                     }
 560                     $last_id = $this->store->getLastId($sequence);
 561                     $this->action('toggle_archive', $url, $last_id, TRUE);
 562                 }
 563             }
 564
 565             # the second <ol> is for read links
 566             $read = 1;
 567         }
 568         $this->messages->add('s', _('import from instapaper completed'));
 569         Tools::logm('import from instapaper completed');
 570         Tools::redirect();
 571     }
 572
 573     /**
 574      * import from Pocket. poche needs a ./ril_export.html file
 575      * @todo add the return value
 576      * @param string $targetFile the file used for importing
 577      * @return boolean
 578      */
 579     private function importFromPocket($targetFile)
 580     {
 581         # TODO gestion des articles favs
 582         $html = new simple_html_dom();
 583         $html->load_file($targetFile);
 584         Tools::logm('starting import from pocket');
 585
 586         $read = 0;
 587         $errors = array();
 588         foreach($html->find('ul') as $ul)
 589         {
 590             foreach($ul->find('li') as $li)
 591             {
 592                 $a = $li->find('a');
 593                 $url = new Url(base64_encode($a[0]->href));
 594                 $this->action('add', $url, 0, TRUE);
 595                 if ($read == '1') {
 596                         $sequence = '';
 597                         if (STORAGE == 'postgres') {
 598                             $sequence = 'entries_id_seq';
 599                         }
 600                     $last_id = $this->store->getLastId($sequence);
 601                     $this->action('toggle_archive', $url, $last_id, TRUE);
 602                 }
 603             }
 604
 605             # the second <ul> is for read links
 606             $read = 1;
 607         }
 608         $this->messages->add('s', _('import from pocket completed'));
 609         Tools::logm('import from pocket completed');
 610         Tools::redirect();
 611     }
 612
 613     /**
 614      * import from Readability. poche needs a ./readability file
 615      * @todo add the return value
 616      * @param string $targetFile the file used for importing
 617      * @return boolean
 618      */
 619     private function importFromReadability($targetFile)
 620     {
 621         # TODO gestion des articles lus / favs
 622         $str_data = file_get_contents($targetFile);
 623         $data = json_decode($str_data,true);
 624         Tools::logm('starting import from Readability');
 625         $count = 0;
 626         foreach ($data as $key => $value) {
 627             $url = NULL;
 628             $favorite = FALSE;
 629             $archive = FALSE;
 630             foreach ($value as $attr => $attr_value) {
 631                 if ($attr == 'article__url') {
 632                     $url = new Url(base64_encode($attr_value));
 633                 }
 634                 $sequence = '';
 635                 if (STORAGE == 'postgres') {
 636                     $sequence = 'entries_id_seq';
 637                 }
 638                 if ($attr_value == 'true') {
 639                     if ($attr == 'favorite') {
 640                         $favorite = TRUE;
 641                     }
 642                     if ($attr == 'archive') {
 643                         $archive = TRUE;
 644                     }
 645                 }
 646             }
 647             # we can add the url
 648             if (!is_null($url) && $url->isCorrect()) {
 649                 $this->action('add', $url, 0, TRUE);
 650                 $count++;
 651                 if ($favorite) {
 652                     $last_id = $this->store->getLastId($sequence);
 653                     $this->action('toggle_fav', $url, $last_id, TRUE);
 654                 }
 655                 if ($archive) {
 656                     $last_id = $this->store->getLastId($sequence);
 657                     $this->action('toggle_archive', $url, $last_id, TRUE);
 658                 }
 659             }
 660         }
 661         $this->messages->add('s', _('import from Readability completed. ' . $count . ' new links.'));
 662         Tools::logm('import from Readability completed');
 663         Tools::redirect();
 664     }
 665
 666     /**
 667      * import datas into your poche
 668      * @param  string $from name of the service to import : pocket, instapaper or readability
 669      * @todo add the return value
 670      * @return boolean
 671      */
 672     public function import($from)
 673     {
 674         $providers = array(
 675             'pocket' => 'importFromPocket',
 676             'readability' => 'importFromReadability',
 677             'instapaper' => 'importFromInstapaper'
 678         );
 679
 680         if (! isset($providers[$from])) {
 681             $this->messages->add('e', _('Unknown import provider.'));
 682             Tools::redirect();
 683         }
 684
 685         $targetDefinition = 'IMPORT_' . strtoupper($from) . '_FILE';
 686         $targetFile = constant($targetDefinition);
 687
 688         if (! defined($targetDefinition)) {
 689             $this->messages->add('e', _('Incomplete inc/poche/define.inc.php file, please define "' . $targetDefinition . '".'));
 690             Tools::redirect();
 691         }
 692
 693         if (! file_exists($targetFile)) {
 694             $this->messages->add('e', _('Could not find required "' . $targetFile . '" import file.'));
 695             Tools::redirect();
 696         }
 697
 698         $this->$providers[$from]($targetFile);
 699     }
 700
 701     /**
 702      * export poche entries in json
 703      * @return json all poche entries
 704      */
 705     public function export()
 706     {
 707         $entries = $this->store->retrieveAll($this->user->getId());
 708         echo $this->tpl->render('export.twig', array(
 709             'export' => Tools::renderJson($entries),
 710         ));
 711         Tools::logm('export view');
 712     }
 713
 714     /**
 715      * Checks online the latest version of poche and cache it
 716      * @param  string $which 'prod' or 'dev'
 717      * @return string        latest $which version
 718      */
 719     private function getPocheVersion($which = 'prod')
 720     {
 721         $cache_file = CACHE . '/' . $which;
 722
 723         # checks if the cached version file exists
 724         if (file_exists($cache_file) && (filemtime($cache_file) > (time() - 86400 ))) {
 725            $version = file_get_contents($cache_file);
 726         } else {
 727            $version = file_get_contents('http://static.inthepoche.com/versions/' . $which);
 728            file_put_contents($cache_file, $version, LOCK_EX);
 729         }
 730         return $version;
 731     }
 732 }