index.php

   1 <?php
   2 /**
   3  * Shaarli - The personal, minimalist, super-fast, database free, bookmarking service.
   4  *
   5  * Friendly fork by the Shaarli community:
   6  *  - https://github.com/shaarli/Shaarli
   7  *
   8  * Original project by sebsauvage.net:
   9  *  - http://sebsauvage.net/wiki/doku.php?id=php:shaarli
  10  *  - https://github.com/sebsauvage/Shaarli
  11  *
  12  * Licence: http://www.opensource.org/licenses/zlib-license.php
  13  */
  14
  15 // Set 'UTC' as the default timezone if it is not defined in php.ini
  16 // See http://php.net/manual/en/datetime.configuration.php#ini.date.timezone
  17 if (date_default_timezone_get() == '') {
  18     date_default_timezone_set('UTC');
  19 }
  20
  21 /*
  22  * PHP configuration
  23  */
  24
  25 // http://server.com/x/shaarli --> /shaarli/
  26 define('WEB_PATH', substr($_SERVER['REQUEST_URI'], 0, 1+strrpos($_SERVER['REQUEST_URI'], '/', 0)));
  27
  28 // High execution time in case of problematic imports/exports.
  29 ini_set('max_input_time', '60');
  30
  31 // Try to set max upload file size and read
  32 ini_set('memory_limit', '128M');
  33 ini_set('post_max_size', '16M');
  34 ini_set('upload_max_filesize', '16M');
  35
  36 // See all error except warnings
  37 error_reporting(E_ALL^E_WARNING);
  38
  39 // 3rd-party libraries
  40 if (! file_exists(__DIR__ . '/vendor/autoload.php')) {
  41     header('Content-Type: text/plain; charset=utf-8');
  42     echo "Error: missing Composer configuration\n\n"
  43         ."If you installed Shaarli through Git or using the development branch,\n"
  44         ."please refer to the installation documentation to install PHP"
  45         ." dependencies using Composer:\n"
  46         ."- https://shaarli.readthedocs.io/en/master/Server-configuration/\n"
  47         ."- https://shaarli.readthedocs.io/en/master/Download-and-Installation/";
  48     exit;
  49 }
  50 require_once 'inc/rain.tpl.class.php';
  51 require_once __DIR__ . '/vendor/autoload.php';
  52
  53 // Shaarli library
  54 require_once 'application/bookmark/LinkUtils.php';
  55 require_once 'application/config/ConfigPlugin.php';
  56 require_once 'application/http/HttpUtils.php';
  57 require_once 'application/http/UrlUtils.php';
  58 require_once 'application/updater/UpdaterUtils.php';
  59 require_once 'application/FileUtils.php';
  60 require_once 'application/TimeZone.php';
  61 require_once 'application/Utils.php';
  62
  63 use Shaarli\ApplicationUtils;
  64 use Shaarli\Bookmark\Bookmark;
  65 use Shaarli\Bookmark\BookmarkFileService;
  66 use Shaarli\Bookmark\BookmarkFilter;
  67 use Shaarli\Bookmark\BookmarkServiceInterface;
  68 use Shaarli\Bookmark\Exception\BookmarkNotFoundException;
  69 use Shaarli\Config\ConfigManager;
  70 use Shaarli\Container\ContainerBuilder;
  71 use Shaarli\Feed\CachedPage;
  72 use Shaarli\Feed\FeedBuilder;
  73 use Shaarli\Formatter\BookmarkMarkdownFormatter;
  74 use Shaarli\Formatter\FormatterFactory;
  75 use Shaarli\History;
  76 use Shaarli\Languages;
  77 use Shaarli\Netscape\NetscapeBookmarkUtils;
  78 use Shaarli\Plugin\PluginManager;
  79 use Shaarli\Render\PageBuilder;
  80 use Shaarli\Render\PageCacheManager;
  81 use Shaarli\Render\ThemeUtils;
  82 use Shaarli\Router;
  83 use Shaarli\Security\LoginManager;
  84 use Shaarli\Security\SessionManager;
  85 use Shaarli\Thumbnailer;
  86 use Shaarli\Updater\Updater;
  87 use Shaarli\Updater\UpdaterUtils;
  88 use Slim\App;
  89
  90 // Ensure the PHP version is supported
  91 try {
  92     ApplicationUtils::checkPHPVersion('7.1', PHP_VERSION);
  93 } catch (Exception $exc) {
  94     header('Content-Type: text/plain; charset=utf-8');
  95     echo $exc->getMessage();
  96     exit;
  97 }
  98
  99 define('SHAARLI_VERSION', ApplicationUtils::getVersion(__DIR__ .'/'. ApplicationUtils::$VERSION_FILE));
 100
 101 // Force cookie path (but do not change lifetime)
 102 $cookie = session_get_cookie_params();
 103 $cookiedir = '';
 104 if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 105     $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
 106 }
 107 // Set default cookie expiration and path.
 108 session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
 109 // Set session parameters on server side.
 110 // Use cookies to store session.
 111 ini_set('session.use_cookies', 1);
 112 // Force cookies for session (phpsessionID forbidden in URL).
 113 ini_set('session.use_only_cookies', 1);
 114 // Prevent PHP form using sessionID in URL if cookies are disabled.
 115 ini_set('session.use_trans_sid', false);
 116
 117 session_name('shaarli');
 118 // Start session if needed (Some server auto-start sessions).
 119 if (session_status() == PHP_SESSION_NONE) {
 120     session_start();
 121 }
 122
 123 // Regenerate session ID if invalid or not defined in cookie.
 124 if (isset($_COOKIE['shaarli']) && !SessionManager::checkId($_COOKIE['shaarli'])) {
 125     session_regenerate_id(true);
 126     $_COOKIE['shaarli'] = session_id();
 127 }
 128
 129 $conf = new ConfigManager();
 130
 131 // In dev mode, throw exception on any warning
 132 if ($conf->get('dev.debug', false)) {
 133     // See all errors (for debugging only)
 134     error_reporting(-1);
 135
 136     set_error_handler(function($errno, $errstr, $errfile, $errline, array $errcontext) {
 137         throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
 138     });
 139 }
 140
 141 $sessionManager = new SessionManager($_SESSION, $conf);
 142 $loginManager = new LoginManager($conf, $sessionManager);
 143 $loginManager->generateStaySignedInToken($_SERVER['REMOTE_ADDR']);
 144 $clientIpId = client_ip_id($_SERVER);
 145
 146 // LC_MESSAGES isn't defined without php-intl, in this case use LC_COLLATE locale instead.
 147 if (! defined('LC_MESSAGES')) {
 148     define('LC_MESSAGES', LC_COLLATE);
 149 }
 150
 151 // Sniff browser language and set date format accordingly.
 152 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
 153     autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']);
 154 }
 155
 156 new Languages(setlocale(LC_MESSAGES, 0), $conf);
 157
 158 $conf->setEmpty('general.timezone', date_default_timezone_get());
 159 $conf->setEmpty('general.title', t('Shared bookmarks on '). escape(index_url($_SERVER)));
 160 RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl').'/'.$conf->get('resource.theme').'/'; // template directory
 161 RainTPL::$cache_dir = $conf->get('resource.raintpl_tmp'); // cache directory
 162
 163 $pluginManager = new PluginManager($conf);
 164 $pluginManager->load($conf->get('general.enabled_plugins'));
 165
 166 date_default_timezone_set($conf->get('general.timezone', 'UTC'));
 167
 168 ob_start();  // Output buffering for the page cache.
 169
 170 // Prevent caching on client side or proxy: (yes, it's ugly)
 171 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
 172 header("Cache-Control: no-store, no-cache, must-revalidate");
 173 header("Cache-Control: post-check=0, pre-check=0", false);
 174 header("Pragma: no-cache");
 175
 176 if (! is_file($conf->getConfigFileExt())) {
 177     // Ensure Shaarli has proper access to its resources
 178     $errors = ApplicationUtils::checkResourcePermissions($conf);
 179
 180     if ($errors != array()) {
 181         $message = '<p>'. t('Insufficient permissions:') .'</p><ul>';
 182
 183         foreach ($errors as $error) {
 184             $message .= '<li>'.$error.'</li>';
 185         }
 186         $message .= '</ul>';
 187
 188         header('Content-Type: text/html; charset=utf-8');
 189         echo $message;
 190         exit;
 191     }
 192
 193     // Display the installation form if no existing config is found
 194     install($conf, $sessionManager, $loginManager);
 195 }
 196
 197 $loginManager->checkLoginState($_COOKIE, $clientIpId);
 198
 199 /**
 200  * Adapter function to ensure compatibility with third-party templates
 201  *
 202  * @see https://github.com/shaarli/Shaarli/pull/1086
 203  *
 204  * @return bool true when the user is logged in, false otherwise
 205  */
 206 function isLoggedIn()
 207 {
 208     global $loginManager;
 209     return $loginManager->isLoggedIn();
 210 }
 211
 212
 213 // ------------------------------------------------------------------------------------------
 214 // Process login form: Check if login/password is correct.
 215 if (isset($_POST['login'])) {
 216     if (! $loginManager->canLogin($_SERVER)) {
 217         die(t('I said: NO. You are banned for the moment. Go away.'));
 218     }
 219     if (isset($_POST['password'])
 220         && $sessionManager->checkToken($_POST['token'])
 221         && $loginManager->checkCredentials($_SERVER['REMOTE_ADDR'], $clientIpId, $_POST['login'], $_POST['password'])
 222     ) {
 223         $loginManager->handleSuccessfulLogin($_SERVER);
 224
 225         $cookiedir = '';
 226         if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 227             // Note: Never forget the trailing slash on the cookie path!
 228             $cookiedir = dirname($_SERVER["SCRIPT_NAME"]) . '/';
 229         }
 230
 231         if (!empty($_POST['longlastingsession'])) {
 232             // Keep the session cookie even after the browser closes
 233             $sessionManager->setStaySignedIn(true);
 234             $expirationTime = $sessionManager->extendSession();
 235
 236             setcookie(
 237                 $loginManager::$STAY_SIGNED_IN_COOKIE,
 238                 $loginManager->getStaySignedInToken(),
 239                 $expirationTime,
 240                 WEB_PATH
 241             );
 242         } else {
 243             // Standard session expiration (=when browser closes)
 244             $expirationTime = 0;
 245         }
 246
 247         // Send cookie with the new expiration date to the browser
 248         session_destroy();
 249         session_set_cookie_params($expirationTime, $cookiedir, $_SERVER['SERVER_NAME']);
 250         session_start();
 251         session_regenerate_id(true);
 252
 253         // Optional redirect after login:
 254         if (isset($_GET['post'])) {
 255             $uri = './?post='. urlencode($_GET['post']);
 256             foreach (array('description', 'source', 'title', 'tags') as $param) {
 257                 if (!empty($_GET[$param])) {
 258                     $uri .= '&'.$param.'='.urlencode($_GET[$param]);
 259                 }
 260             }
 261             header('Location: '. $uri);
 262             exit;
 263         }
 264
 265         if (isset($_GET['edit_link'])) {
 266             header('Location: ./?edit_link='. escape($_GET['edit_link']));
 267             exit;
 268         }
 269
 270         if (isset($_POST['returnurl'])) {
 271             // Prevent loops over login screen.
 272             if (strpos($_POST['returnurl'], '/login') === false) {
 273                 header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST']));
 274                 exit;
 275             }
 276         }
 277         header('Location: ./?');
 278         exit;
 279     } else {
 280         $loginManager->handleFailedLogin($_SERVER);
 281         $redir = '?username='. urlencode($_POST['login']);
 282         if (isset($_GET['post'])) {
 283             $redir .= '&post=' . urlencode($_GET['post']);
 284             foreach (array('description', 'source', 'title', 'tags') as $param) {
 285                 if (!empty($_GET[$param])) {
 286                     $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
 287                 }
 288             }
 289         }
 290         // Redirect to login screen.
 291         echo '<script>alert("'. t("Wrong login/password.") .'");document.location=\'./login'.$redir.'\';</script>';
 292         exit;
 293     }
 294 }
 295
 296 // ------------------------------------------------------------------------------------------
 297 // Token management for XSRF protection
 298 // Token should be used in any form which acts on data (create,update,delete,import...).
 299 if (!isset($_SESSION['tokens'])) {
 300     $_SESSION['tokens']=array();  // Token are attached to the session.
 301 }
 302
 303 /**
 304  * Renders the linklist
 305  *
 306  * @param pageBuilder              $PAGE          pageBuilder instance.
 307  * @param BookmarkServiceInterface $linkDb        instance.
 308  * @param ConfigManager            $conf          Configuration Manager instance.
 309  * @param PluginManager            $pluginManager Plugin Manager instance.
 310  */
 311 function showLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
 312 {
 313     buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager);
 314     $PAGE->renderPage('linklist');
 315 }
 316
 317 /**
 318  * Render HTML page (according to URL parameters and user rights)
 319  *
 320  * @param ConfigManager            $conf           Configuration Manager instance.
 321  * @param PluginManager            $pluginManager  Plugin Manager instance,
 322  * @param BookmarkServiceInterface $bookmarkService
 323  * @param History                  $history        instance
 324  * @param SessionManager           $sessionManager SessionManager instance
 325  * @param LoginManager             $loginManager   LoginManager instance
 326  */
 327 function renderPage($conf, $pluginManager, $bookmarkService, $history, $sessionManager, $loginManager)
 328 {
 329     $pageCacheManager = new PageCacheManager($conf->get('resource.page_cache'), $loginManager->isLoggedIn());
 330     $updater = new Updater(
 331         UpdaterUtils::read_updates_file($conf->get('resource.updates')),
 332         $bookmarkService,
 333         $conf,
 334         $loginManager->isLoggedIn()
 335     );
 336     try {
 337         $newUpdates = $updater->update();
 338         if (! empty($newUpdates)) {
 339             UpdaterUtils::write_updates_file(
 340                 $conf->get('resource.updates'),
 341                 $updater->getDoneUpdates()
 342             );
 343
 344             $pageCacheManager->invalidateCaches();
 345         }
 346     } catch (Exception $e) {
 347         die($e->getMessage());
 348     }
 349
 350     $PAGE = new PageBuilder($conf, $_SESSION, $bookmarkService, $sessionManager->generateToken(), $loginManager->isLoggedIn());
 351     $PAGE->assign('linkcount', $bookmarkService->count(BookmarkFilter::$ALL));
 352     $PAGE->assign('privateLinkcount', $bookmarkService->count(BookmarkFilter::$PRIVATE));
 353     $PAGE->assign('plugin_errors', $pluginManager->getErrors());
 354
 355     // Determine which page will be rendered.
 356     $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
 357     $targetPage = Router::findPage($query, $_GET, $loginManager->isLoggedIn());
 358
 359     if (// if the user isn't logged in
 360         !$loginManager->isLoggedIn() &&
 361         // and Shaarli doesn't have public content...
 362         $conf->get('privacy.hide_public_links') &&
 363         // and is configured to enforce the login
 364         $conf->get('privacy.force_login') &&
 365         // and the current page isn't already the login page
 366         $targetPage !== Router::$PAGE_LOGIN &&
 367         // and the user is not requesting a feed (which would lead to a different content-type as expected)
 368         $targetPage !== Router::$PAGE_FEED_ATOM &&
 369         $targetPage !== Router::$PAGE_FEED_RSS
 370     ) {
 371         // force current page to be the login page
 372         $targetPage = Router::$PAGE_LOGIN;
 373     }
 374
 375     // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
 376     // Then assign generated data to RainTPL.
 377     $common_hooks = array(
 378         'includes',
 379         'header',
 380         'footer',
 381     );
 382
 383     foreach ($common_hooks as $name) {
 384         $plugin_data = array();
 385         $pluginManager->executeHooks(
 386             'render_' . $name,
 387             $plugin_data,
 388             array(
 389                 'target' => $targetPage,
 390                 'loggedin' => $loginManager->isLoggedIn()
 391             )
 392         );
 393         $PAGE->assign('plugins_' . $name, $plugin_data);
 394     }
 395
 396     // -------- Display login form.
 397     if ($targetPage == Router::$PAGE_LOGIN) {
 398         header('Location: ./login');
 399         exit;
 400     }
 401     // -------- User wants to logout.
 402     if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout')) {
 403         header('Location: ./logout');
 404         exit;
 405     }
 406
 407     // -------- Picture wall
 408     if ($targetPage == Router::$PAGE_PICWALL) {
 409         header('Location: ./picture-wall');
 410         exit;
 411     }
 412
 413     // -------- Tag cloud
 414     if ($targetPage == Router::$PAGE_TAGCLOUD) {
 415         header('Location: ./tag-cloud');
 416         exit;
 417     }
 418
 419     // -------- Tag list
 420     if ($targetPage == Router::$PAGE_TAGLIST) {
 421         header('Location: ./tag-list');
 422         exit;
 423     }
 424
 425     // Daily page.
 426     if ($targetPage == Router::$PAGE_DAILY) {
 427         $dayParam = !empty($_GET['day']) ? '?day=' . escape($_GET['day']) : '';
 428         header('Location: ./daily'. $dayParam);
 429         exit;
 430     }
 431
 432     // ATOM and RSS feed.
 433     if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
 434         $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
 435         header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
 436
 437         // Cache system
 438         $query = $_SERVER['QUERY_STRING'];
 439         $cache = new CachedPage(
 440             $conf->get('resource.page_cache'),
 441             page_url($_SERVER),
 442             startsWith($query, 'do='. $targetPage) && !$loginManager->isLoggedIn()
 443         );
 444         $cached = $cache->cachedVersion();
 445         if (!empty($cached)) {
 446             echo $cached;
 447             exit;
 448         }
 449
 450         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 451         // Generate data.
 452         $feedGenerator = new FeedBuilder(
 453             $bookmarkService,
 454             $factory->getFormatter(),
 455             $_SERVER,
 456             $loginManager->isLoggedIn()
 457         );
 458         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 459         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 460         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 461         $data = $feedGenerator->buildData($feedType, $_GET);
 462
 463         // Process plugin hook.
 464         $pluginManager->executeHooks('render_feed', $data, array(
 465             'loggedin' => $loginManager->isLoggedIn(),
 466             'target' => $targetPage,
 467         ));
 468
 469         // Render the template.
 470         $PAGE->assignAll($data);
 471         $PAGE->renderPage('feed.'. $feedType);
 472         $cache->cache(ob_get_contents());
 473         ob_end_flush();
 474         exit;
 475     }
 476
 477     // Display opensearch plugin (XML)
 478     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 479         header('Content-Type: application/xml; charset=utf-8');
 480         $PAGE->assign('serverurl', index_url($_SERVER));
 481         $PAGE->renderPage('opensearch');
 482         exit;
 483     }
 484
 485     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 486     if (isset($_GET['addtag'])) {
 487         header('Location: ./add-tag/'. $_GET['addtag']);
 488         exit;
 489     }
 490
 491     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 492     if (isset($_GET['removetag'])) {
 493         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 494         if (empty($_SERVER['HTTP_REFERER'])) {
 495             header('Location: ?');
 496             exit;
 497         }
 498
 499         // In case browser does not send HTTP_REFERER
 500         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 501
 502         // Prevent redirection loop
 503         if (isset($params['removetag'])) {
 504             unset($params['removetag']);
 505         }
 506
 507         if (isset($params['searchtags'])) {
 508             $tags = explode(' ', $params['searchtags']);
 509             // Remove value from array $tags.
 510             $tags = array_diff($tags, array($_GET['removetag']));
 511             $params['searchtags'] = implode(' ', $tags);
 512
 513             if (empty($params['searchtags'])) {
 514                 unset($params['searchtags']);
 515             }
 516
 517             // We also remove page (keeping the same page has no sense, since
 518             // the results are different)
 519             unset($params['page']);
 520         }
 521         header('Location: ?'.http_build_query($params));
 522         exit;
 523     }
 524
 525     // -------- User wants to change the number of bookmarks per page (linksperpage=...)
 526     if (isset($_GET['linksperpage'])) {
 527         if (is_numeric($_GET['linksperpage'])) {
 528             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 529         }
 530
 531         if (! empty($_SERVER['HTTP_REFERER'])) {
 532             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 533         } else {
 534             $location = '?';
 535         }
 536         header('Location: '. $location);
 537         exit;
 538     }
 539
 540     // -------- User wants to see only private bookmarks (toggle)
 541     if (isset($_GET['visibility'])) {
 542         if ($_GET['visibility'] === 'private') {
 543             // Visibility not set or not already private, set private, otherwise reset it
 544             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 545                 // See only private bookmarks
 546                 $_SESSION['visibility'] = 'private';
 547             } else {
 548                 unset($_SESSION['visibility']);
 549             }
 550         } elseif ($_GET['visibility'] === 'public') {
 551             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 552                 // See only public bookmarks
 553                 $_SESSION['visibility'] = 'public';
 554             } else {
 555                 unset($_SESSION['visibility']);
 556             }
 557         }
 558
 559         if (! empty($_SERVER['HTTP_REFERER'])) {
 560             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 561         } else {
 562             $location = '?';
 563         }
 564         header('Location: '. $location);
 565         exit;
 566     }
 567
 568     // -------- User wants to see only untagged bookmarks (toggle)
 569     if (isset($_GET['untaggedonly'])) {
 570         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 571
 572         if (! empty($_SERVER['HTTP_REFERER'])) {
 573             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 574         } else {
 575             $location = '?';
 576         }
 577         header('Location: '. $location);
 578         exit;
 579     }
 580
 581     // -------- Handle other actions allowed for non-logged in users:
 582     if (!$loginManager->isLoggedIn()) {
 583         // User tries to post new link but is not logged in:
 584         // Show login screen, then redirect to ?post=...
 585         if (isset($_GET['post'])) {
 586             header( // Redirect to login page, then back to post link.
 587                 'Location: ./login?post='.urlencode($_GET['post']).
 588                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 589                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 590                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 591                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 592             );
 593             exit;
 594         }
 595
 596         showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 597         if (isset($_GET['edit_link'])) {
 598             header('Location: ./login?edit_link='. escape($_GET['edit_link']));
 599             exit;
 600         }
 601
 602         exit; // Never remove this one! All operations below are reserved for logged in user.
 603     }
 604
 605     // -------- All other functions are reserved for the registered user:
 606
 607     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 608     if ($targetPage == Router::$PAGE_TOOLS) {
 609         $data = [
 610             'pageabsaddr' => index_url($_SERVER),
 611             'sslenabled' => is_https($_SERVER),
 612         ];
 613         $pluginManager->executeHooks('render_tools', $data);
 614
 615         foreach ($data as $key => $value) {
 616             $PAGE->assign($key, $value);
 617         }
 618
 619         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 620         $PAGE->renderPage('tools');
 621         exit;
 622     }
 623
 624     // -------- User wants to change his/her password.
 625     if ($targetPage == Router::$PAGE_CHANGEPASSWORD) {
 626         if ($conf->get('security.open_shaarli')) {
 627             die(t('You are not supposed to change a password on an Open Shaarli.'));
 628         }
 629
 630         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) {
 631             if (!$sessionManager->checkToken($_POST['token'])) {
 632                 die(t('Wrong token.')); // Go away!
 633             }
 634
 635             // Make sure old password is correct.
 636             $oldhash = sha1(
 637                 $_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt')
 638             );
 639             if ($oldhash != $conf->get('credentials.hash')) {
 640                 echo '<script>alert("'
 641                     . t('The old password is not correct.')
 642                     .'");document.location=\'./?do=changepasswd\';</script>';
 643                 exit;
 644             }
 645             // Save new password
 646             // Salt renders rainbow-tables attacks useless.
 647             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 648             $conf->set(
 649                 'credentials.hash',
 650                 sha1(
 651                     $_POST['setpassword']
 652                     . $conf->get('credentials.login')
 653                     . $conf->get('credentials.salt')
 654                 )
 655             );
 656             try {
 657                 $conf->write($loginManager->isLoggedIn());
 658             } catch (Exception $e) {
 659                 error_log(
 660                     'ERROR while writing config file after changing password.' . PHP_EOL .
 661                     $e->getMessage()
 662                 );
 663
 664                 // TODO: do not handle exceptions/errors in JS.
 665                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'./?do=tools\';</script>';
 666                 exit;
 667             }
 668             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'./?do=tools\';</script>';
 669             exit;
 670         } else {
 671             // show the change password form.
 672             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
 673             $PAGE->renderPage('changepassword');
 674             exit;
 675         }
 676     }
 677
 678     // -------- User wants to change configuration
 679     if ($targetPage == Router::$PAGE_CONFIGURE) {
 680         if (!empty($_POST['title'])) {
 681             if (!$sessionManager->checkToken($_POST['token'])) {
 682                 die(t('Wrong token.')); // Go away!
 683             }
 684             $tz = 'UTC';
 685             if (!empty($_POST['continent']) && !empty($_POST['city'])
 686                 && isTimeZoneValid($_POST['continent'], $_POST['city'])
 687             ) {
 688                 $tz = $_POST['continent'] . '/' . $_POST['city'];
 689             }
 690             $conf->set('general.timezone', $tz);
 691             $conf->set('general.title', escape($_POST['title']));
 692             $conf->set('general.header_link', escape($_POST['titleLink']));
 693             $conf->set('general.retrieve_description', !empty($_POST['retrieveDescription']));
 694             $conf->set('resource.theme', escape($_POST['theme']));
 695             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
 696             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
 697             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
 698             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
 699             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
 700             $conf->set('api.enabled', !empty($_POST['enableApi']));
 701             $conf->set('api.secret', escape($_POST['apiSecret']));
 702             $conf->set('formatter', escape($_POST['formatter']));
 703
 704             if (! empty($_POST['language'])) {
 705                 $conf->set('translation.language', escape($_POST['language']));
 706             }
 707
 708             $thumbnailsMode = extension_loaded('gd') ? $_POST['enableThumbnails'] : Thumbnailer::MODE_NONE;
 709             if ($thumbnailsMode !== Thumbnailer::MODE_NONE
 710                 && $thumbnailsMode !== $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE)
 711             ) {
 712                 $_SESSION['warnings'][] = t(
 713                     'You have enabled or changed thumbnails mode. '
 714                     .'<a href="./?do=thumbs_update">Please synchronize them</a>.'
 715                 );
 716             }
 717             $conf->set('thumbnails.mode', $thumbnailsMode);
 718
 719             try {
 720                 $conf->write($loginManager->isLoggedIn());
 721                 $history->updateSettings();
 722                 $pageCacheManager->invalidateCaches();
 723             } catch (Exception $e) {
 724                 error_log(
 725                     'ERROR while writing config file after configuration update.' . PHP_EOL .
 726                     $e->getMessage()
 727                 );
 728
 729                 // TODO: do not handle exceptions/errors in JS.
 730                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'./?do=configure\';</script>';
 731                 exit;
 732             }
 733             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'./?do=configure\';</script>';
 734             exit;
 735         } else {
 736             // Show the configuration form.
 737             $PAGE->assign('title', $conf->get('general.title'));
 738             $PAGE->assign('theme', $conf->get('resource.theme'));
 739             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
 740             $PAGE->assign('formatter_available', ['default', 'markdown']);
 741             list($continents, $cities) = generateTimeZoneData(
 742                 timezone_identifiers_list(),
 743                 $conf->get('general.timezone')
 744             );
 745             $PAGE->assign('continents', $continents);
 746             $PAGE->assign('cities', $cities);
 747             $PAGE->assign('retrieve_description', $conf->get('general.retrieve_description'));
 748             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
 749             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
 750             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
 751             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
 752             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
 753             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
 754             $PAGE->assign('api_secret', $conf->get('api.secret'));
 755             $PAGE->assign('languages', Languages::getAvailableLanguages());
 756             $PAGE->assign('gd_enabled', extension_loaded('gd'));
 757             $PAGE->assign('thumbnails_mode', $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE));
 758             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
 759             $PAGE->renderPage('configure');
 760             exit;
 761         }
 762     }
 763
 764     // -------- User wants to rename a tag or delete it
 765     if ($targetPage == Router::$PAGE_CHANGETAG) {
 766         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
 767             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
 768             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
 769             $PAGE->renderPage('changetag');
 770             exit;
 771         }
 772
 773         if (!$sessionManager->checkToken($_POST['token'])) {
 774             die(t('Wrong token.'));
 775         }
 776
 777         $toTag = isset($_POST['totag']) ? escape($_POST['totag']) : null;
 778         $fromTag = escape($_POST['fromtag']);
 779         $count = 0;
 780         $bookmarks = $bookmarkService->search(['searchtags' => $fromTag], BookmarkFilter::$ALL, true);
 781         foreach ($bookmarks as $bookmark) {
 782             if ($toTag) {
 783                 $bookmark->renameTag($fromTag, $toTag);
 784             } else {
 785                 $bookmark->deleteTag($fromTag);
 786             }
 787             $bookmarkService->set($bookmark, false);
 788             $history->updateLink($bookmark);
 789             $count++;
 790         }
 791         $bookmarkService->save();
 792         $delete = empty($_POST['totag']);
 793         $redirect = $delete ? './do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
 794         $alert = $delete
 795             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d bookmarks.', $count), $count)
 796             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d bookmarks.', $count), $count);
 797         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
 798         exit;
 799     }
 800
 801     // -------- User wants to add a link without using the bookmarklet: Show form.
 802     if ($targetPage == Router::$PAGE_ADDLINK) {
 803         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
 804         $PAGE->renderPage('addlink');
 805         exit;
 806     }
 807
 808     // -------- User clicked the "Save" button when editing a link: Save link to database.
 809     if (isset($_POST['save_edit'])) {
 810         // Go away!
 811         if (! $sessionManager->checkToken($_POST['token'])) {
 812             die(t('Wrong token.'));
 813         }
 814
 815         // lf_id should only be present if the link exists.
 816         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : null;
 817         if ($id && $bookmarkService->exists($id)) {
 818             // Edit
 819             $bookmark = $bookmarkService->get($id);
 820         } else {
 821             // New link
 822             $bookmark = new Bookmark();
 823         }
 824
 825         $bookmark->setTitle($_POST['lf_title']);
 826         $bookmark->setDescription($_POST['lf_description']);
 827         $bookmark->setUrl($_POST['lf_url'], $conf->get('security.allowed_protocols'));
 828         $bookmark->setPrivate(isset($_POST['lf_private']));
 829         $bookmark->setTagsString($_POST['lf_tags']);
 830
 831         if ($conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
 832             && ! $bookmark->isNote()
 833         ) {
 834             $thumbnailer = new Thumbnailer($conf);
 835             $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
 836         }
 837         $bookmarkService->addOrSet($bookmark, false);
 838
 839         // To preserve backward compatibility with 3rd parties, plugins still use arrays
 840         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 841         $formatter = $factory->getFormatter('raw');
 842         $data = $formatter->format($bookmark);
 843         $pluginManager->executeHooks('save_link', $data);
 844
 845         $bookmark->fromArray($data);
 846         $bookmarkService->set($bookmark);
 847
 848         // If we are called from the bookmarklet, we must close the popup:
 849         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
 850             echo '<script>self.close();</script>';
 851             exit;
 852         }
 853
 854         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
 855         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
 856         // Scroll to the link which has been edited.
 857         $location .= '#' . $bookmark->getShortUrl();
 858         // After saving the link, redirect to the page the user was on.
 859         header('Location: '. $location);
 860         exit;
 861     }
 862
 863     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
 864     if ($targetPage == Router::$PAGE_DELETELINK) {
 865         if (! $sessionManager->checkToken($_GET['token'])) {
 866             die(t('Wrong token.'));
 867         }
 868
 869         $ids = trim($_GET['lf_linkdate']);
 870         if (strpos($ids, ' ') !== false) {
 871             // multiple, space-separated ids provided
 872             $ids = array_values(array_filter(
 873                 preg_split('/\s+/', escape($ids)),
 874                 function ($item) {
 875                     return $item !== '';
 876                 }
 877             ));
 878         } else {
 879             // only a single id provided
 880             $shortUrl = $bookmarkService->get($ids)->getShortUrl();
 881             $ids = [$ids];
 882         }
 883         // assert at least one id is given
 884         if (!count($ids)) {
 885             die('no id provided');
 886         }
 887         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 888         $formatter = $factory->getFormatter('raw');
 889         foreach ($ids as $id) {
 890             $id = (int) escape($id);
 891             $bookmark = $bookmarkService->get($id);
 892             $data = $formatter->format($bookmark);
 893             $pluginManager->executeHooks('delete_link', $data);
 894             $bookmarkService->remove($bookmark, false);
 895         }
 896         $bookmarkService->save();
 897
 898         // If we are called from the bookmarklet, we must close the popup:
 899         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
 900             echo '<script>self.close();</script>';
 901             exit;
 902         }
 903
 904         $location = '?';
 905         if (isset($_SERVER['HTTP_REFERER'])) {
 906             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
 907             $location = generateLocation(
 908                 $_SERVER['HTTP_REFERER'],
 909                 $_SERVER['HTTP_HOST'],
 910                 ['delete_link', 'edit_link', ! empty($shortUrl) ? $shortUrl : null]
 911             );
 912         }
 913
 914         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
 915         exit;
 916     }
 917
 918     // -------- User clicked either "Set public" or "Set private" bulk operation
 919     if ($targetPage == Router::$PAGE_CHANGE_VISIBILITY) {
 920         if (! $sessionManager->checkToken($_GET['token'])) {
 921             die(t('Wrong token.'));
 922         }
 923
 924         $ids = trim($_GET['ids']);
 925         if (strpos($ids, ' ') !== false) {
 926             // multiple, space-separated ids provided
 927             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
 928         } else {
 929             // only a single id provided
 930             $ids = [$ids];
 931         }
 932
 933         // assert at least one id is given
 934         if (!count($ids)) {
 935             die('no id provided');
 936         }
 937         // assert that the visibility is valid
 938         if (!isset($_GET['newVisibility']) || !in_array($_GET['newVisibility'], ['public', 'private'])) {
 939             die('invalid visibility');
 940         } else {
 941             $private = $_GET['newVisibility'] === 'private';
 942         }
 943         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 944         $formatter = $factory->getFormatter('raw');
 945         foreach ($ids as $id) {
 946             $id = (int) escape($id);
 947             $bookmark = $bookmarkService->get($id);
 948             $bookmark->setPrivate($private);
 949
 950             // To preserve backward compatibility with 3rd parties, plugins still use arrays
 951             $data = $formatter->format($bookmark);
 952             $pluginManager->executeHooks('save_link', $data);
 953             $bookmark->fromArray($data);
 954
 955             $bookmarkService->set($bookmark);
 956         }
 957         $bookmarkService->save();
 958
 959         $location = '?';
 960         if (isset($_SERVER['HTTP_REFERER'])) {
 961             $location = generateLocation(
 962                 $_SERVER['HTTP_REFERER'],
 963                 $_SERVER['HTTP_HOST']
 964             );
 965         }
 966         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
 967         exit;
 968     }
 969
 970     // -------- User clicked the "EDIT" button on a link: Display link edit form.
 971     if (isset($_GET['edit_link'])) {
 972         $id = (int) escape($_GET['edit_link']);
 973         try {
 974             $link = $bookmarkService->get($id);  // Read database
 975         } catch (BookmarkNotFoundException $e) {
 976             // Link not found in database.
 977             header('Location: ?');
 978             exit;
 979         }
 980
 981         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 982         $formatter = $factory->getFormatter('raw');
 983         $formattedLink = $formatter->format($link);
 984         $tags = $bookmarkService->bookmarksCountPerTag();
 985         if ($conf->get('formatter') === 'markdown') {
 986             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
 987         }
 988         $data = array(
 989             'link' => $formattedLink,
 990             'link_is_new' => false,
 991             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
 992             'tags' => $tags,
 993         );
 994         $pluginManager->executeHooks('render_editlink', $data);
 995
 996         foreach ($data as $key => $value) {
 997             $PAGE->assign($key, $value);
 998         }
 999
1000         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1001         $PAGE->renderPage('editlink');
1002         exit;
1003     }
1004
1005     // -------- User want to post a new link: Display link edit form.
1006     if (isset($_GET['post'])) {
1007         $url = cleanup_url($_GET['post']);
1008
1009         $link_is_new = false;
1010         // Check if URL is not already in database (in this case, we will edit the existing link)
1011         $bookmark = $bookmarkService->findByUrl($url);
1012         if (! $bookmark) {
1013             $link_is_new = true;
1014             // Get title if it was provided in URL (by the bookmarklet).
1015             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1016             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1017             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1018             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1019             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1020
1021             // If this is an HTTP(S) link, we try go get the page to extract
1022             // the title (otherwise we will to straight to the edit form.)
1023             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1024                 $retrieveDescription = $conf->get('general.retrieve_description');
1025                 // Short timeout to keep the application responsive
1026                 // The callback will fill $charset and $title with data from the downloaded page.
1027                 get_http_response(
1028                     $url,
1029                     $conf->get('general.download_timeout', 30),
1030                     $conf->get('general.download_max_size', 4194304),
1031                     get_curl_download_callback($charset, $title, $description, $tags, $retrieveDescription)
1032                 );
1033                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1034                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1035                 }
1036             }
1037
1038             if ($url == '') {
1039                 $title = $conf->get('general.default_note_title', t('Note: '));
1040             }
1041             $url = escape($url);
1042             $title = escape($title);
1043
1044             $link = [
1045                 'title' => $title,
1046                 'url' => $url,
1047                 'description' => $description,
1048                 'tags' => $tags,
1049                 'private' => $private,
1050             ];
1051         } else {
1052             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1053             $formatter = $factory->getFormatter('raw');
1054             $link = $formatter->format($bookmark);
1055         }
1056
1057         $tags = $bookmarkService->bookmarksCountPerTag();
1058         if ($conf->get('formatter') === 'markdown') {
1059             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1060         }
1061         $data = [
1062             'link' => $link,
1063             'link_is_new' => $link_is_new,
1064             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1065             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1066             'tags' => $tags,
1067             'default_private_links' => $conf->get('privacy.default_private_links', false),
1068         ];
1069         $pluginManager->executeHooks('render_editlink', $data);
1070
1071         foreach ($data as $key => $value) {
1072             $PAGE->assign($key, $value);
1073         }
1074
1075         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1076         $PAGE->renderPage('editlink');
1077         exit;
1078     }
1079
1080     if ($targetPage == Router::$PAGE_PINLINK) {
1081         if (! isset($_GET['id']) || !$bookmarkService->exists($_GET['id'])) {
1082             // FIXME! Use a proper error system.
1083             $msg = t('Invalid link ID provided');
1084             echo '<script>alert("'. $msg .'");document.location=\''. index_url($_SERVER) .'\';</script>';
1085             exit;
1086         }
1087         if (! $sessionManager->checkToken($_GET['token'])) {
1088             die('Wrong token.');
1089         }
1090
1091         $link = $bookmarkService->get($_GET['id']);
1092         $link->setSticky(! $link->isSticky());
1093         $bookmarkService->set($link);
1094         header('Location: '.index_url($_SERVER));
1095         exit;
1096     }
1097
1098     if ($targetPage == Router::$PAGE_EXPORT) {
1099         // Export bookmarks as a Netscape Bookmarks file
1100
1101         if (empty($_GET['selection'])) {
1102             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1103             $PAGE->renderPage('export');
1104             exit;
1105         }
1106
1107         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1108         $selection = $_GET['selection'];
1109         if (isset($_GET['prepend_note_url'])) {
1110             $prependNoteUrl = $_GET['prepend_note_url'];
1111         } else {
1112             $prependNoteUrl = false;
1113         }
1114
1115         try {
1116             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1117             $formatter = $factory->getFormatter('raw');
1118             $PAGE->assign(
1119                 'links',
1120                 NetscapeBookmarkUtils::filterAndFormat(
1121                     $bookmarkService,
1122                     $formatter,
1123                     $selection,
1124                     $prependNoteUrl,
1125                     index_url($_SERVER)
1126                 )
1127             );
1128         } catch (Exception $exc) {
1129             header('Content-Type: text/plain; charset=utf-8');
1130             echo $exc->getMessage();
1131             exit;
1132         }
1133         $now = new DateTime();
1134         header('Content-Type: text/html; charset=utf-8');
1135         header(
1136             'Content-disposition: attachment; filename=bookmarks_'
1137             .$selection.'_'.$now->format(Bookmark::LINK_DATE_FORMAT).'.html'
1138         );
1139         $PAGE->assign('date', $now->format(DateTime::RFC822));
1140         $PAGE->assign('eol', PHP_EOL);
1141         $PAGE->assign('selection', $selection);
1142         $PAGE->renderPage('export.bookmarks');
1143         exit;
1144     }
1145
1146     if ($targetPage == Router::$PAGE_IMPORT) {
1147         // Upload a Netscape bookmark dump to import its contents
1148
1149         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1150             // Show import dialog
1151             $PAGE->assign(
1152                 'maxfilesize',
1153                 get_max_upload_size(
1154                     ini_get('post_max_size'),
1155                     ini_get('upload_max_filesize'),
1156                     false
1157                 )
1158             );
1159             $PAGE->assign(
1160                 'maxfilesizeHuman',
1161                 get_max_upload_size(
1162                     ini_get('post_max_size'),
1163                     ini_get('upload_max_filesize'),
1164                     true
1165                 )
1166             );
1167             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1168             $PAGE->renderPage('import');
1169             exit;
1170         }
1171
1172         // Import bookmarks from an uploaded file
1173         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1174             // The file is too big or some form field may be missing.
1175             $msg = sprintf(
1176                 t(
1177                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1178                     .' (%s). Please upload in smaller chunks.'
1179                 ),
1180                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1181             );
1182             echo '<script>alert("'. $msg .'");document.location=\'./?do='.Router::$PAGE_IMPORT .'\';</script>';
1183             exit;
1184         }
1185         if (! $sessionManager->checkToken($_POST['token'])) {
1186             die('Wrong token.');
1187         }
1188         $status = NetscapeBookmarkUtils::import(
1189             $_POST,
1190             $_FILES,
1191             $bookmarkService,
1192             $conf,
1193             $history
1194         );
1195         echo '<script>alert("'.$status.'");document.location=\'./?do='
1196              .Router::$PAGE_IMPORT .'\';</script>';
1197         exit;
1198     }
1199
1200     // Plugin administration page
1201     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1202         $pluginMeta = $pluginManager->getPluginsMeta();
1203
1204         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1205         $enabledPlugins = array_filter($pluginMeta, function ($v) {
1206             return $v['order'] !== false;
1207         });
1208         // Load parameters.
1209         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1210         uasort(
1211             $enabledPlugins,
1212             function ($a, $b) {
1213                 return $a['order'] - $b['order'];
1214             }
1215         );
1216         $disabledPlugins = array_filter($pluginMeta, function ($v) {
1217             return $v['order'] === false;
1218         });
1219
1220         $PAGE->assign('enabledPlugins', $enabledPlugins);
1221         $PAGE->assign('disabledPlugins', $disabledPlugins);
1222         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1223         $PAGE->renderPage('pluginsadmin');
1224         exit;
1225     }
1226
1227     // Plugin administration form action
1228     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1229         try {
1230             if (isset($_POST['parameters_form'])) {
1231                 $pluginManager->executeHooks('save_plugin_parameters', $_POST);
1232                 unset($_POST['parameters_form']);
1233                 foreach ($_POST as $param => $value) {
1234                     $conf->set('plugins.'. $param, escape($value));
1235                 }
1236             } else {
1237                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1238             }
1239             $conf->write($loginManager->isLoggedIn());
1240             $history->updateSettings();
1241         } catch (Exception $e) {
1242             error_log(
1243                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1244                 $e->getMessage()
1245             );
1246
1247             // TODO: do not handle exceptions/errors in JS.
1248             echo '<script>alert("'
1249                 . $e->getMessage()
1250                 .'");document.location=\'./?do='
1251                 . Router::$PAGE_PLUGINSADMIN
1252                 .'\';</script>';
1253             exit;
1254         }
1255         header('Location: ./?do='. Router::$PAGE_PLUGINSADMIN);
1256         exit;
1257     }
1258
1259     // Get a fresh token
1260     if ($targetPage == Router::$GET_TOKEN) {
1261         header('Content-Type:text/plain');
1262         echo $sessionManager->generateToken();
1263         exit;
1264     }
1265
1266     // -------- Thumbnails Update
1267     if ($targetPage == Router::$PAGE_THUMBS_UPDATE) {
1268         $ids = [];
1269         foreach ($bookmarkService->search() as $bookmark) {
1270             // A note or not HTTP(S)
1271             if ($bookmark->isNote() || ! startsWith(strtolower($bookmark->getUrl()), 'http')) {
1272                 continue;
1273             }
1274             $ids[] = $bookmark->getId();
1275         }
1276         $PAGE->assign('ids', $ids);
1277         $PAGE->assign('pagetitle', t('Thumbnails update') .' - '. $conf->get('general.title', 'Shaarli'));
1278         $PAGE->renderPage('thumbnails');
1279         exit;
1280     }
1281
1282     // -------- Single Thumbnail Update
1283     if ($targetPage == Router::$AJAX_THUMB_UPDATE) {
1284         if (! isset($_POST['id']) || ! ctype_digit($_POST['id'])) {
1285             http_response_code(400);
1286             exit;
1287         }
1288         $id = (int) $_POST['id'];
1289         if (! $bookmarkService->exists($id)) {
1290             http_response_code(404);
1291             exit;
1292         }
1293         $thumbnailer = new Thumbnailer($conf);
1294         $bookmark = $bookmarkService->get($id);
1295         $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1296         $bookmarkService->set($bookmark);
1297
1298         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1299         echo json_encode($factory->getFormatter('raw')->format($bookmark));
1300         exit;
1301     }
1302
1303     // -------- Otherwise, simply display search form and bookmarks:
1304     showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
1305     exit;
1306 }
1307
1308 /**
1309  * Template for the list of bookmarks (<div id="linklist">)
1310  * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1311  *
1312  * @param pageBuilder              $PAGE          pageBuilder instance.
1313  * @param BookmarkServiceInterface $linkDb        LinkDB instance.
1314  * @param ConfigManager            $conf          Configuration Manager instance.
1315  * @param PluginManager            $pluginManager Plugin Manager instance.
1316  * @param LoginManager             $loginManager  LoginManager instance
1317  */
1318 function buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
1319 {
1320     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1321     $formatter = $factory->getFormatter();
1322
1323     // Used in templates
1324     if (isset($_GET['searchtags'])) {
1325         if (! empty($_GET['searchtags'])) {
1326             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1327         } else {
1328             $searchtags = false;
1329         }
1330     } else {
1331         $searchtags = '';
1332     }
1333     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1334
1335     // Smallhash filter
1336     if (! empty($_SERVER['QUERY_STRING'])
1337         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1338         try {
1339             $linksToDisplay = $linkDb->findByHash($_SERVER['QUERY_STRING']);
1340         } catch (BookmarkNotFoundException $e) {
1341             $PAGE->render404($e->getMessage());
1342             exit;
1343         }
1344     } else {
1345         // Filter bookmarks according search parameters.
1346         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : null;
1347         $request = [
1348             'searchtags' => $searchtags,
1349             'searchterm' => $searchterm,
1350         ];
1351         $linksToDisplay = $linkDb->search($request, $visibility, false, !empty($_SESSION['untaggedonly']));
1352     }
1353
1354     // ---- Handle paging.
1355     $keys = array();
1356     foreach ($linksToDisplay as $key => $value) {
1357         $keys[] = $key;
1358     }
1359
1360     // Select articles according to paging.
1361     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1362     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1363     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1364     $page = $page < 1 ? 1 : $page;
1365     $page = $page > $pagecount ? $pagecount : $page;
1366     // Start index.
1367     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1368     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1369
1370     $thumbnailsEnabled = $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE;
1371     if ($thumbnailsEnabled) {
1372         $thumbnailer = new Thumbnailer($conf);
1373     }
1374
1375     $linkDisp = array();
1376     while ($i<$end && $i<count($keys)) {
1377         $link = $formatter->format($linksToDisplay[$keys[$i]]);
1378
1379         // Logged in, thumbnails enabled, not a note,
1380         // and (never retrieved yet or no valid cache file)
1381         if ($loginManager->isLoggedIn()
1382             && $thumbnailsEnabled
1383             && !$linksToDisplay[$keys[$i]]->isNote()
1384             && $linksToDisplay[$keys[$i]]->getThumbnail() !== false
1385             && ! is_file($linksToDisplay[$keys[$i]]->getThumbnail())
1386         ) {
1387             $linksToDisplay[$keys[$i]]->setThumbnail($thumbnailer->get($link['url']));
1388             $linkDb->set($linksToDisplay[$keys[$i]], false);
1389             $updateDB = true;
1390             $link['thumbnail'] = $linksToDisplay[$keys[$i]]->getThumbnail();
1391         }
1392
1393         // Check for both signs of a note: starting with ? and 7 chars long.
1394 //        if ($link['url'][0] === '?' && strlen($link['url']) === 7) {
1395 //            $link['url'] = index_url($_SERVER) . $link['url'];
1396 //        }
1397
1398         $linkDisp[$keys[$i]] = $link;
1399         $i++;
1400     }
1401
1402     // If we retrieved new thumbnails, we update the database.
1403     if (!empty($updateDB)) {
1404         $linkDb->save();
1405     }
1406
1407     // Compute paging navigation
1408     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1409     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1410     $previous_page_url = '';
1411     if ($i != count($keys)) {
1412         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1413     }
1414     $next_page_url='';
1415     if ($page>1) {
1416         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1417     }
1418
1419     // Fill all template fields.
1420     $data = array(
1421         'previous_page_url' => $previous_page_url,
1422         'next_page_url' => $next_page_url,
1423         'page_current' => $page,
1424         'page_max' => $pagecount,
1425         'result_count' => count($linksToDisplay),
1426         'search_term' => $searchterm,
1427         'search_tags' => $searchtags,
1428         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1429         'links' => $linkDisp,
1430     );
1431
1432     // If there is only a single link, we change on-the-fly the title of the page.
1433     if (count($linksToDisplay) == 1) {
1434         $data['pagetitle'] = $linksToDisplay[$keys[0]]->getTitle() .' - '. $conf->get('general.title');
1435     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1436         $data['pagetitle'] = t('Search: ');
1437         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1438         $bracketWrap = function ($tag) {
1439             return '['. $tag .']';
1440         };
1441         $data['pagetitle'] .= ! empty($searchtags)
1442             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1443             : '';
1444         $data['pagetitle'] .= '- '. $conf->get('general.title');
1445     }
1446
1447     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1448
1449     foreach ($data as $key => $value) {
1450         $PAGE->assign($key, $value);
1451     }
1452
1453     return;
1454 }
1455
1456 /**
1457  * Installation
1458  * This function should NEVER be called if the file data/config.php exists.
1459  *
1460  * @param ConfigManager  $conf           Configuration Manager instance.
1461  * @param SessionManager $sessionManager SessionManager instance
1462  * @param LoginManager   $loginManager   LoginManager instance
1463  */
1464 function install($conf, $sessionManager, $loginManager)
1465 {
1466     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1467     if (endsWith($_SERVER['HTTP_HOST'], '.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) {
1468         mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions', 0705);
1469     }
1470
1471
1472     // This part makes sure sessions works correctly.
1473     // (Because on some hosts, session.save_path may not be set correctly,
1474     // or we may not have write access to it.)
1475     if (isset($_GET['test_session'])
1476         && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working')) {
1477         // Step 2: Check if data in session is correct.
1478         $msg = t(
1479             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1480             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1481             'and that you have write access to it.<br>'.
1482             'It currently points to %s.<br>'.
1483             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1484             'or any custom hostname without a dot causes cookie storage to fail. '.
1485             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1486         );
1487         $msg = sprintf($msg, session_save_path());
1488         echo $msg;
1489         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1490         die;
1491     }
1492     if (!isset($_SESSION['session_tested'])) {
1493         // Step 1 : Try to store data in session and reload page.
1494         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1495         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1496     }
1497     if (isset($_GET['test_session'])) {
1498         // Step 3: Sessions are OK. Remove test parameter from URL.
1499         header('Location: '.index_url($_SERVER));
1500     }
1501
1502
1503     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) {
1504         $tz = 'UTC';
1505         if (!empty($_POST['continent']) && !empty($_POST['city'])
1506             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1507         ) {
1508             $tz = $_POST['continent'].'/'.$_POST['city'];
1509         }
1510         $conf->set('general.timezone', $tz);
1511         $login = $_POST['setlogin'];
1512         $conf->set('credentials.login', $login);
1513         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1514         $conf->set('credentials.salt', $salt);
1515         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1516         if (!empty($_POST['title'])) {
1517             $conf->set('general.title', escape($_POST['title']));
1518         } else {
1519             $conf->set('general.title', 'Shared bookmarks on '.escape(index_url($_SERVER)));
1520         }
1521         $conf->set('translation.language', escape($_POST['language']));
1522         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1523         $conf->set('api.enabled', !empty($_POST['enableApi']));
1524         $conf->set(
1525             'api.secret',
1526             generate_api_secret(
1527                 $conf->get('credentials.login'),
1528                 $conf->get('credentials.salt')
1529             )
1530         );
1531         try {
1532             // Everything is ok, let's create config file.
1533             $conf->write($loginManager->isLoggedIn());
1534         } catch (Exception $e) {
1535             error_log(
1536                 'ERROR while writing config file after installation.' . PHP_EOL .
1537                     $e->getMessage()
1538             );
1539
1540             // TODO: do not handle exceptions/errors in JS.
1541             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1542             exit;
1543         }
1544
1545         $history = new History($conf->get('resource.history'));
1546         $bookmarkService = new BookmarkFileService($conf, $history, true);
1547         if ($bookmarkService->count() === 0) {
1548             $bookmarkService->initialize();
1549         }
1550
1551         echo '<script>alert('
1552             .'"Shaarli is now configured. '
1553             .'Please enter your login/password and start shaaring your bookmarks!"'
1554             .');document.location=\'./login\';</script>';
1555         exit;
1556     }
1557
1558     $PAGE = new PageBuilder($conf, $_SESSION, null, $sessionManager->generateToken());
1559     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1560     $PAGE->assign('continents', $continents);
1561     $PAGE->assign('cities', $cities);
1562     $PAGE->assign('languages', Languages::getAvailableLanguages());
1563     $PAGE->renderPage('install');
1564     exit;
1565 }
1566
1567 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
1568     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
1569 }
1570
1571 try {
1572     $history = new History($conf->get('resource.history'));
1573 } catch (Exception $e) {
1574     die($e->getMessage());
1575 }
1576
1577 $linkDb = new BookmarkFileService($conf, $history, $loginManager->isLoggedIn());
1578
1579 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) {
1580     header('Location: ./daily-rss');
1581     exit;
1582 }
1583
1584 $containerBuilder = new ContainerBuilder($conf, $sessionManager, $loginManager, WEB_PATH);
1585 $container = $containerBuilder->build();
1586 $app = new App($container);
1587
1588 // REST API routes
1589 $app->group('/api/v1', function () {
1590     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
1591     $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
1592     $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
1593     $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
1594     $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
1595     $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
1596
1597     $this->get('/tags', '\Shaarli\Api\Controllers\Tags:getTags')->setName('getTags');
1598     $this->get('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:getTag')->setName('getTag');
1599     $this->put('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:putTag')->setName('putTag');
1600     $this->delete('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:deleteTag')->setName('deleteTag');
1601
1602     $this->get('/history', '\Shaarli\Api\Controllers\HistoryController:getHistory')->setName('getHistory');
1603 })->add('\Shaarli\Api\ApiMiddleware');
1604
1605 $app->group('', function () {
1606     $this->get('/login', '\Shaarli\Front\Controller\LoginController:index')->setName('login');
1607     $this->get('/logout', '\Shaarli\Front\Controller\LogoutController:index')->setName('logout');
1608     $this->get('/picture-wall', '\Shaarli\Front\Controller\PictureWallController:index')->setName('picwall');
1609     $this->get('/tag-cloud', '\Shaarli\Front\Controller\TagCloudController:cloud')->setName('tagcloud');
1610     $this->get('/tag-list', '\Shaarli\Front\Controller\TagCloudController:list')->setName('taglist');
1611     $this->get('/daily', '\Shaarli\Front\Controller\DailyController:index')->setName('daily');
1612     $this->get('/daily-rss', '\Shaarli\Front\Controller\DailyController:rss')->setName('dailyrss');
1613
1614     $this->get('/add-tag/{newTag}', '\Shaarli\Front\Controller\TagController:addTag')->setName('add-tag');
1615 })->add('\Shaarli\Front\ShaarliMiddleware');
1616
1617 $response = $app->run(true);
1618
1619 // Hack to make Slim and Shaarli router work together:
1620 // If a Slim route isn't found and NOT API call, we call renderPage().
1621 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
1622     // We use UTF-8 for proper international characters handling.
1623     header('Content-Type: text/html; charset=utf-8');
1624     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
1625 } else {
1626     $response = $response
1627         ->withHeader('Access-Control-Allow-Origin', '*')
1628         ->withHeader(
1629             'Access-Control-Allow-Headers',
1630             'X-Requested-With, Content-Type, Accept, Origin, Authorization'
1631         )
1632         ->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
1633     $app->respond($response);
1634 }