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             $feedType,
 456             $_SERVER,
 457             $_GET,
 458             $loginManager->isLoggedIn()
 459         );
 460         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 461         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 462         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 463         $data = $feedGenerator->buildData();
 464
 465         // Process plugin hook.
 466         $pluginManager->executeHooks('render_feed', $data, array(
 467             'loggedin' => $loginManager->isLoggedIn(),
 468             'target' => $targetPage,
 469         ));
 470
 471         // Render the template.
 472         $PAGE->assignAll($data);
 473         $PAGE->renderPage('feed.'. $feedType);
 474         $cache->cache(ob_get_contents());
 475         ob_end_flush();
 476         exit;
 477     }
 478
 479     // Display opensearch plugin (XML)
 480     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 481         header('Content-Type: application/xml; charset=utf-8');
 482         $PAGE->assign('serverurl', index_url($_SERVER));
 483         $PAGE->renderPage('opensearch');
 484         exit;
 485     }
 486
 487     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 488     if (isset($_GET['addtag'])) {
 489         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
 490         if (empty($_SERVER['HTTP_REFERER'])) {
 491             // In case browser does not send HTTP_REFERER
 492             header('Location: ?searchtags='.urlencode($_GET['addtag']));
 493             exit;
 494         }
 495         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 496
 497         // Prevent redirection loop
 498         if (isset($params['addtag'])) {
 499             unset($params['addtag']);
 500         }
 501
 502         // Check if this tag is already in the search query and ignore it if it is.
 503         // Each tag is always separated by a space
 504         if (isset($params['searchtags'])) {
 505             $current_tags = explode(' ', $params['searchtags']);
 506         } else {
 507             $current_tags = array();
 508         }
 509         $addtag = true;
 510         foreach ($current_tags as $value) {
 511             if ($value === $_GET['addtag']) {
 512                 $addtag = false;
 513                 break;
 514             }
 515         }
 516         // Append the tag if necessary
 517         if (empty($params['searchtags'])) {
 518             $params['searchtags'] = trim($_GET['addtag']);
 519         } elseif ($addtag) {
 520             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
 521         }
 522
 523         // We also remove page (keeping the same page has no sense, since the
 524         // results are different)
 525         unset($params['page']);
 526
 527         header('Location: ?'.http_build_query($params));
 528         exit;
 529     }
 530
 531     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 532     if (isset($_GET['removetag'])) {
 533         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 534         if (empty($_SERVER['HTTP_REFERER'])) {
 535             header('Location: ?');
 536             exit;
 537         }
 538
 539         // In case browser does not send HTTP_REFERER
 540         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 541
 542         // Prevent redirection loop
 543         if (isset($params['removetag'])) {
 544             unset($params['removetag']);
 545         }
 546
 547         if (isset($params['searchtags'])) {
 548             $tags = explode(' ', $params['searchtags']);
 549             // Remove value from array $tags.
 550             $tags = array_diff($tags, array($_GET['removetag']));
 551             $params['searchtags'] = implode(' ', $tags);
 552
 553             if (empty($params['searchtags'])) {
 554                 unset($params['searchtags']);
 555             }
 556
 557             // We also remove page (keeping the same page has no sense, since
 558             // the results are different)
 559             unset($params['page']);
 560         }
 561         header('Location: ?'.http_build_query($params));
 562         exit;
 563     }
 564
 565     // -------- User wants to change the number of bookmarks per page (linksperpage=...)
 566     if (isset($_GET['linksperpage'])) {
 567         if (is_numeric($_GET['linksperpage'])) {
 568             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 569         }
 570
 571         if (! empty($_SERVER['HTTP_REFERER'])) {
 572             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 573         } else {
 574             $location = '?';
 575         }
 576         header('Location: '. $location);
 577         exit;
 578     }
 579
 580     // -------- User wants to see only private bookmarks (toggle)
 581     if (isset($_GET['visibility'])) {
 582         if ($_GET['visibility'] === 'private') {
 583             // Visibility not set or not already private, set private, otherwise reset it
 584             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 585                 // See only private bookmarks
 586                 $_SESSION['visibility'] = 'private';
 587             } else {
 588                 unset($_SESSION['visibility']);
 589             }
 590         } elseif ($_GET['visibility'] === 'public') {
 591             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 592                 // See only public bookmarks
 593                 $_SESSION['visibility'] = 'public';
 594             } else {
 595                 unset($_SESSION['visibility']);
 596             }
 597         }
 598
 599         if (! empty($_SERVER['HTTP_REFERER'])) {
 600             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 601         } else {
 602             $location = '?';
 603         }
 604         header('Location: '. $location);
 605         exit;
 606     }
 607
 608     // -------- User wants to see only untagged bookmarks (toggle)
 609     if (isset($_GET['untaggedonly'])) {
 610         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 611
 612         if (! empty($_SERVER['HTTP_REFERER'])) {
 613             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 614         } else {
 615             $location = '?';
 616         }
 617         header('Location: '. $location);
 618         exit;
 619     }
 620
 621     // -------- Handle other actions allowed for non-logged in users:
 622     if (!$loginManager->isLoggedIn()) {
 623         // User tries to post new link but is not logged in:
 624         // Show login screen, then redirect to ?post=...
 625         if (isset($_GET['post'])) {
 626             header( // Redirect to login page, then back to post link.
 627                 'Location: ./login?post='.urlencode($_GET['post']).
 628                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 629                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 630                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 631                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 632             );
 633             exit;
 634         }
 635
 636         showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 637         if (isset($_GET['edit_link'])) {
 638             header('Location: ./login?edit_link='. escape($_GET['edit_link']));
 639             exit;
 640         }
 641
 642         exit; // Never remove this one! All operations below are reserved for logged in user.
 643     }
 644
 645     // -------- All other functions are reserved for the registered user:
 646
 647     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 648     if ($targetPage == Router::$PAGE_TOOLS) {
 649         $data = [
 650             'pageabsaddr' => index_url($_SERVER),
 651             'sslenabled' => is_https($_SERVER),
 652         ];
 653         $pluginManager->executeHooks('render_tools', $data);
 654
 655         foreach ($data as $key => $value) {
 656             $PAGE->assign($key, $value);
 657         }
 658
 659         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 660         $PAGE->renderPage('tools');
 661         exit;
 662     }
 663
 664     // -------- User wants to change his/her password.
 665     if ($targetPage == Router::$PAGE_CHANGEPASSWORD) {
 666         if ($conf->get('security.open_shaarli')) {
 667             die(t('You are not supposed to change a password on an Open Shaarli.'));
 668         }
 669
 670         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) {
 671             if (!$sessionManager->checkToken($_POST['token'])) {
 672                 die(t('Wrong token.')); // Go away!
 673             }
 674
 675             // Make sure old password is correct.
 676             $oldhash = sha1(
 677                 $_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt')
 678             );
 679             if ($oldhash != $conf->get('credentials.hash')) {
 680                 echo '<script>alert("'
 681                     . t('The old password is not correct.')
 682                     .'");document.location=\'./?do=changepasswd\';</script>';
 683                 exit;
 684             }
 685             // Save new password
 686             // Salt renders rainbow-tables attacks useless.
 687             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 688             $conf->set(
 689                 'credentials.hash',
 690                 sha1(
 691                     $_POST['setpassword']
 692                     . $conf->get('credentials.login')
 693                     . $conf->get('credentials.salt')
 694                 )
 695             );
 696             try {
 697                 $conf->write($loginManager->isLoggedIn());
 698             } catch (Exception $e) {
 699                 error_log(
 700                     'ERROR while writing config file after changing password.' . PHP_EOL .
 701                     $e->getMessage()
 702                 );
 703
 704                 // TODO: do not handle exceptions/errors in JS.
 705                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'./?do=tools\';</script>';
 706                 exit;
 707             }
 708             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'./?do=tools\';</script>';
 709             exit;
 710         } else {
 711             // show the change password form.
 712             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
 713             $PAGE->renderPage('changepassword');
 714             exit;
 715         }
 716     }
 717
 718     // -------- User wants to change configuration
 719     if ($targetPage == Router::$PAGE_CONFIGURE) {
 720         if (!empty($_POST['title'])) {
 721             if (!$sessionManager->checkToken($_POST['token'])) {
 722                 die(t('Wrong token.')); // Go away!
 723             }
 724             $tz = 'UTC';
 725             if (!empty($_POST['continent']) && !empty($_POST['city'])
 726                 && isTimeZoneValid($_POST['continent'], $_POST['city'])
 727             ) {
 728                 $tz = $_POST['continent'] . '/' . $_POST['city'];
 729             }
 730             $conf->set('general.timezone', $tz);
 731             $conf->set('general.title', escape($_POST['title']));
 732             $conf->set('general.header_link', escape($_POST['titleLink']));
 733             $conf->set('general.retrieve_description', !empty($_POST['retrieveDescription']));
 734             $conf->set('resource.theme', escape($_POST['theme']));
 735             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
 736             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
 737             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
 738             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
 739             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
 740             $conf->set('api.enabled', !empty($_POST['enableApi']));
 741             $conf->set('api.secret', escape($_POST['apiSecret']));
 742             $conf->set('formatter', escape($_POST['formatter']));
 743
 744             if (! empty($_POST['language'])) {
 745                 $conf->set('translation.language', escape($_POST['language']));
 746             }
 747
 748             $thumbnailsMode = extension_loaded('gd') ? $_POST['enableThumbnails'] : Thumbnailer::MODE_NONE;
 749             if ($thumbnailsMode !== Thumbnailer::MODE_NONE
 750                 && $thumbnailsMode !== $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE)
 751             ) {
 752                 $_SESSION['warnings'][] = t(
 753                     'You have enabled or changed thumbnails mode. '
 754                     .'<a href="./?do=thumbs_update">Please synchronize them</a>.'
 755                 );
 756             }
 757             $conf->set('thumbnails.mode', $thumbnailsMode);
 758
 759             try {
 760                 $conf->write($loginManager->isLoggedIn());
 761                 $history->updateSettings();
 762                 $pageCacheManager->invalidateCaches();
 763             } catch (Exception $e) {
 764                 error_log(
 765                     'ERROR while writing config file after configuration update.' . PHP_EOL .
 766                     $e->getMessage()
 767                 );
 768
 769                 // TODO: do not handle exceptions/errors in JS.
 770                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'./?do=configure\';</script>';
 771                 exit;
 772             }
 773             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'./?do=configure\';</script>';
 774             exit;
 775         } else {
 776             // Show the configuration form.
 777             $PAGE->assign('title', $conf->get('general.title'));
 778             $PAGE->assign('theme', $conf->get('resource.theme'));
 779             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
 780             $PAGE->assign('formatter_available', ['default', 'markdown']);
 781             list($continents, $cities) = generateTimeZoneData(
 782                 timezone_identifiers_list(),
 783                 $conf->get('general.timezone')
 784             );
 785             $PAGE->assign('continents', $continents);
 786             $PAGE->assign('cities', $cities);
 787             $PAGE->assign('retrieve_description', $conf->get('general.retrieve_description'));
 788             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
 789             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
 790             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
 791             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
 792             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
 793             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
 794             $PAGE->assign('api_secret', $conf->get('api.secret'));
 795             $PAGE->assign('languages', Languages::getAvailableLanguages());
 796             $PAGE->assign('gd_enabled', extension_loaded('gd'));
 797             $PAGE->assign('thumbnails_mode', $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE));
 798             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
 799             $PAGE->renderPage('configure');
 800             exit;
 801         }
 802     }
 803
 804     // -------- User wants to rename a tag or delete it
 805     if ($targetPage == Router::$PAGE_CHANGETAG) {
 806         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
 807             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
 808             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
 809             $PAGE->renderPage('changetag');
 810             exit;
 811         }
 812
 813         if (!$sessionManager->checkToken($_POST['token'])) {
 814             die(t('Wrong token.'));
 815         }
 816
 817         $toTag = isset($_POST['totag']) ? escape($_POST['totag']) : null;
 818         $fromTag = escape($_POST['fromtag']);
 819         $count = 0;
 820         $bookmarks = $bookmarkService->search(['searchtags' => $fromTag], BookmarkFilter::$ALL, true);
 821         foreach ($bookmarks as $bookmark) {
 822             if ($toTag) {
 823                 $bookmark->renameTag($fromTag, $toTag);
 824             } else {
 825                 $bookmark->deleteTag($fromTag);
 826             }
 827             $bookmarkService->set($bookmark, false);
 828             $history->updateLink($bookmark);
 829             $count++;
 830         }
 831         $bookmarkService->save();
 832         $delete = empty($_POST['totag']);
 833         $redirect = $delete ? './do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
 834         $alert = $delete
 835             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d bookmarks.', $count), $count)
 836             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d bookmarks.', $count), $count);
 837         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
 838         exit;
 839     }
 840
 841     // -------- User wants to add a link without using the bookmarklet: Show form.
 842     if ($targetPage == Router::$PAGE_ADDLINK) {
 843         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
 844         $PAGE->renderPage('addlink');
 845         exit;
 846     }
 847
 848     // -------- User clicked the "Save" button when editing a link: Save link to database.
 849     if (isset($_POST['save_edit'])) {
 850         // Go away!
 851         if (! $sessionManager->checkToken($_POST['token'])) {
 852             die(t('Wrong token.'));
 853         }
 854
 855         // lf_id should only be present if the link exists.
 856         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : null;
 857         if ($id && $bookmarkService->exists($id)) {
 858             // Edit
 859             $bookmark = $bookmarkService->get($id);
 860         } else {
 861             // New link
 862             $bookmark = new Bookmark();
 863         }
 864
 865         $bookmark->setTitle($_POST['lf_title']);
 866         $bookmark->setDescription($_POST['lf_description']);
 867         $bookmark->setUrl($_POST['lf_url'], $conf->get('security.allowed_protocols'));
 868         $bookmark->setPrivate(isset($_POST['lf_private']));
 869         $bookmark->setTagsString($_POST['lf_tags']);
 870
 871         if ($conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
 872             && ! $bookmark->isNote()
 873         ) {
 874             $thumbnailer = new Thumbnailer($conf);
 875             $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
 876         }
 877         $bookmarkService->addOrSet($bookmark, false);
 878
 879         // To preserve backward compatibility with 3rd parties, plugins still use arrays
 880         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 881         $formatter = $factory->getFormatter('raw');
 882         $data = $formatter->format($bookmark);
 883         $pluginManager->executeHooks('save_link', $data);
 884
 885         $bookmark->fromArray($data);
 886         $bookmarkService->set($bookmark);
 887
 888         // If we are called from the bookmarklet, we must close the popup:
 889         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
 890             echo '<script>self.close();</script>';
 891             exit;
 892         }
 893
 894         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
 895         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
 896         // Scroll to the link which has been edited.
 897         $location .= '#' . $bookmark->getShortUrl();
 898         // After saving the link, redirect to the page the user was on.
 899         header('Location: '. $location);
 900         exit;
 901     }
 902
 903     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
 904     if ($targetPage == Router::$PAGE_DELETELINK) {
 905         if (! $sessionManager->checkToken($_GET['token'])) {
 906             die(t('Wrong token.'));
 907         }
 908
 909         $ids = trim($_GET['lf_linkdate']);
 910         if (strpos($ids, ' ') !== false) {
 911             // multiple, space-separated ids provided
 912             $ids = array_values(array_filter(
 913                 preg_split('/\s+/', escape($ids)),
 914                 function ($item) {
 915                     return $item !== '';
 916                 }
 917             ));
 918         } else {
 919             // only a single id provided
 920             $shortUrl = $bookmarkService->get($ids)->getShortUrl();
 921             $ids = [$ids];
 922         }
 923         // assert at least one id is given
 924         if (!count($ids)) {
 925             die('no id provided');
 926         }
 927         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 928         $formatter = $factory->getFormatter('raw');
 929         foreach ($ids as $id) {
 930             $id = (int) escape($id);
 931             $bookmark = $bookmarkService->get($id);
 932             $data = $formatter->format($bookmark);
 933             $pluginManager->executeHooks('delete_link', $data);
 934             $bookmarkService->remove($bookmark, false);
 935         }
 936         $bookmarkService->save();
 937
 938         // If we are called from the bookmarklet, we must close the popup:
 939         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
 940             echo '<script>self.close();</script>';
 941             exit;
 942         }
 943
 944         $location = '?';
 945         if (isset($_SERVER['HTTP_REFERER'])) {
 946             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
 947             $location = generateLocation(
 948                 $_SERVER['HTTP_REFERER'],
 949                 $_SERVER['HTTP_HOST'],
 950                 ['delete_link', 'edit_link', ! empty($shortUrl) ? $shortUrl : null]
 951             );
 952         }
 953
 954         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
 955         exit;
 956     }
 957
 958     // -------- User clicked either "Set public" or "Set private" bulk operation
 959     if ($targetPage == Router::$PAGE_CHANGE_VISIBILITY) {
 960         if (! $sessionManager->checkToken($_GET['token'])) {
 961             die(t('Wrong token.'));
 962         }
 963
 964         $ids = trim($_GET['ids']);
 965         if (strpos($ids, ' ') !== false) {
 966             // multiple, space-separated ids provided
 967             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
 968         } else {
 969             // only a single id provided
 970             $ids = [$ids];
 971         }
 972
 973         // assert at least one id is given
 974         if (!count($ids)) {
 975             die('no id provided');
 976         }
 977         // assert that the visibility is valid
 978         if (!isset($_GET['newVisibility']) || !in_array($_GET['newVisibility'], ['public', 'private'])) {
 979             die('invalid visibility');
 980         } else {
 981             $private = $_GET['newVisibility'] === 'private';
 982         }
 983         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 984         $formatter = $factory->getFormatter('raw');
 985         foreach ($ids as $id) {
 986             $id = (int) escape($id);
 987             $bookmark = $bookmarkService->get($id);
 988             $bookmark->setPrivate($private);
 989
 990             // To preserve backward compatibility with 3rd parties, plugins still use arrays
 991             $data = $formatter->format($bookmark);
 992             $pluginManager->executeHooks('save_link', $data);
 993             $bookmark->fromArray($data);
 994
 995             $bookmarkService->set($bookmark);
 996         }
 997         $bookmarkService->save();
 998
 999         $location = '?';
1000         if (isset($_SERVER['HTTP_REFERER'])) {
1001             $location = generateLocation(
1002                 $_SERVER['HTTP_REFERER'],
1003                 $_SERVER['HTTP_HOST']
1004             );
1005         }
1006         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1007         exit;
1008     }
1009
1010     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1011     if (isset($_GET['edit_link'])) {
1012         $id = (int) escape($_GET['edit_link']);
1013         try {
1014             $link = $bookmarkService->get($id);  // Read database
1015         } catch (BookmarkNotFoundException $e) {
1016             // Link not found in database.
1017             header('Location: ?');
1018             exit;
1019         }
1020
1021         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1022         $formatter = $factory->getFormatter('raw');
1023         $formattedLink = $formatter->format($link);
1024         $tags = $bookmarkService->bookmarksCountPerTag();
1025         if ($conf->get('formatter') === 'markdown') {
1026             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1027         }
1028         $data = array(
1029             'link' => $formattedLink,
1030             'link_is_new' => false,
1031             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1032             'tags' => $tags,
1033         );
1034         $pluginManager->executeHooks('render_editlink', $data);
1035
1036         foreach ($data as $key => $value) {
1037             $PAGE->assign($key, $value);
1038         }
1039
1040         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1041         $PAGE->renderPage('editlink');
1042         exit;
1043     }
1044
1045     // -------- User want to post a new link: Display link edit form.
1046     if (isset($_GET['post'])) {
1047         $url = cleanup_url($_GET['post']);
1048
1049         $link_is_new = false;
1050         // Check if URL is not already in database (in this case, we will edit the existing link)
1051         $bookmark = $bookmarkService->findByUrl($url);
1052         if (! $bookmark) {
1053             $link_is_new = true;
1054             // Get title if it was provided in URL (by the bookmarklet).
1055             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1056             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1057             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1058             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1059             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1060
1061             // If this is an HTTP(S) link, we try go get the page to extract
1062             // the title (otherwise we will to straight to the edit form.)
1063             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1064                 $retrieveDescription = $conf->get('general.retrieve_description');
1065                 // Short timeout to keep the application responsive
1066                 // The callback will fill $charset and $title with data from the downloaded page.
1067                 get_http_response(
1068                     $url,
1069                     $conf->get('general.download_timeout', 30),
1070                     $conf->get('general.download_max_size', 4194304),
1071                     get_curl_download_callback($charset, $title, $description, $tags, $retrieveDescription)
1072                 );
1073                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1074                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1075                 }
1076             }
1077
1078             if ($url == '') {
1079                 $title = $conf->get('general.default_note_title', t('Note: '));
1080             }
1081             $url = escape($url);
1082             $title = escape($title);
1083
1084             $link = [
1085                 'title' => $title,
1086                 'url' => $url,
1087                 'description' => $description,
1088                 'tags' => $tags,
1089                 'private' => $private,
1090             ];
1091         } else {
1092             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1093             $formatter = $factory->getFormatter('raw');
1094             $link = $formatter->format($bookmark);
1095         }
1096
1097         $tags = $bookmarkService->bookmarksCountPerTag();
1098         if ($conf->get('formatter') === 'markdown') {
1099             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1100         }
1101         $data = [
1102             'link' => $link,
1103             'link_is_new' => $link_is_new,
1104             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1105             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1106             'tags' => $tags,
1107             'default_private_links' => $conf->get('privacy.default_private_links', false),
1108         ];
1109         $pluginManager->executeHooks('render_editlink', $data);
1110
1111         foreach ($data as $key => $value) {
1112             $PAGE->assign($key, $value);
1113         }
1114
1115         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1116         $PAGE->renderPage('editlink');
1117         exit;
1118     }
1119
1120     if ($targetPage == Router::$PAGE_PINLINK) {
1121         if (! isset($_GET['id']) || !$bookmarkService->exists($_GET['id'])) {
1122             // FIXME! Use a proper error system.
1123             $msg = t('Invalid link ID provided');
1124             echo '<script>alert("'. $msg .'");document.location=\''. index_url($_SERVER) .'\';</script>';
1125             exit;
1126         }
1127         if (! $sessionManager->checkToken($_GET['token'])) {
1128             die('Wrong token.');
1129         }
1130
1131         $link = $bookmarkService->get($_GET['id']);
1132         $link->setSticky(! $link->isSticky());
1133         $bookmarkService->set($link);
1134         header('Location: '.index_url($_SERVER));
1135         exit;
1136     }
1137
1138     if ($targetPage == Router::$PAGE_EXPORT) {
1139         // Export bookmarks as a Netscape Bookmarks file
1140
1141         if (empty($_GET['selection'])) {
1142             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1143             $PAGE->renderPage('export');
1144             exit;
1145         }
1146
1147         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1148         $selection = $_GET['selection'];
1149         if (isset($_GET['prepend_note_url'])) {
1150             $prependNoteUrl = $_GET['prepend_note_url'];
1151         } else {
1152             $prependNoteUrl = false;
1153         }
1154
1155         try {
1156             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1157             $formatter = $factory->getFormatter('raw');
1158             $PAGE->assign(
1159                 'links',
1160                 NetscapeBookmarkUtils::filterAndFormat(
1161                     $bookmarkService,
1162                     $formatter,
1163                     $selection,
1164                     $prependNoteUrl,
1165                     index_url($_SERVER)
1166                 )
1167             );
1168         } catch (Exception $exc) {
1169             header('Content-Type: text/plain; charset=utf-8');
1170             echo $exc->getMessage();
1171             exit;
1172         }
1173         $now = new DateTime();
1174         header('Content-Type: text/html; charset=utf-8');
1175         header(
1176             'Content-disposition: attachment; filename=bookmarks_'
1177             .$selection.'_'.$now->format(Bookmark::LINK_DATE_FORMAT).'.html'
1178         );
1179         $PAGE->assign('date', $now->format(DateTime::RFC822));
1180         $PAGE->assign('eol', PHP_EOL);
1181         $PAGE->assign('selection', $selection);
1182         $PAGE->renderPage('export.bookmarks');
1183         exit;
1184     }
1185
1186     if ($targetPage == Router::$PAGE_IMPORT) {
1187         // Upload a Netscape bookmark dump to import its contents
1188
1189         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1190             // Show import dialog
1191             $PAGE->assign(
1192                 'maxfilesize',
1193                 get_max_upload_size(
1194                     ini_get('post_max_size'),
1195                     ini_get('upload_max_filesize'),
1196                     false
1197                 )
1198             );
1199             $PAGE->assign(
1200                 'maxfilesizeHuman',
1201                 get_max_upload_size(
1202                     ini_get('post_max_size'),
1203                     ini_get('upload_max_filesize'),
1204                     true
1205                 )
1206             );
1207             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1208             $PAGE->renderPage('import');
1209             exit;
1210         }
1211
1212         // Import bookmarks from an uploaded file
1213         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1214             // The file is too big or some form field may be missing.
1215             $msg = sprintf(
1216                 t(
1217                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1218                     .' (%s). Please upload in smaller chunks.'
1219                 ),
1220                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1221             );
1222             echo '<script>alert("'. $msg .'");document.location=\'./?do='.Router::$PAGE_IMPORT .'\';</script>';
1223             exit;
1224         }
1225         if (! $sessionManager->checkToken($_POST['token'])) {
1226             die('Wrong token.');
1227         }
1228         $status = NetscapeBookmarkUtils::import(
1229             $_POST,
1230             $_FILES,
1231             $bookmarkService,
1232             $conf,
1233             $history
1234         );
1235         echo '<script>alert("'.$status.'");document.location=\'./?do='
1236              .Router::$PAGE_IMPORT .'\';</script>';
1237         exit;
1238     }
1239
1240     // Plugin administration page
1241     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1242         $pluginMeta = $pluginManager->getPluginsMeta();
1243
1244         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1245         $enabledPlugins = array_filter($pluginMeta, function ($v) {
1246             return $v['order'] !== false;
1247         });
1248         // Load parameters.
1249         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1250         uasort(
1251             $enabledPlugins,
1252             function ($a, $b) {
1253                 return $a['order'] - $b['order'];
1254             }
1255         );
1256         $disabledPlugins = array_filter($pluginMeta, function ($v) {
1257             return $v['order'] === false;
1258         });
1259
1260         $PAGE->assign('enabledPlugins', $enabledPlugins);
1261         $PAGE->assign('disabledPlugins', $disabledPlugins);
1262         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1263         $PAGE->renderPage('pluginsadmin');
1264         exit;
1265     }
1266
1267     // Plugin administration form action
1268     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1269         try {
1270             if (isset($_POST['parameters_form'])) {
1271                 $pluginManager->executeHooks('save_plugin_parameters', $_POST);
1272                 unset($_POST['parameters_form']);
1273                 foreach ($_POST as $param => $value) {
1274                     $conf->set('plugins.'. $param, escape($value));
1275                 }
1276             } else {
1277                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1278             }
1279             $conf->write($loginManager->isLoggedIn());
1280             $history->updateSettings();
1281         } catch (Exception $e) {
1282             error_log(
1283                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1284                 $e->getMessage()
1285             );
1286
1287             // TODO: do not handle exceptions/errors in JS.
1288             echo '<script>alert("'
1289                 . $e->getMessage()
1290                 .'");document.location=\'./?do='
1291                 . Router::$PAGE_PLUGINSADMIN
1292                 .'\';</script>';
1293             exit;
1294         }
1295         header('Location: ./?do='. Router::$PAGE_PLUGINSADMIN);
1296         exit;
1297     }
1298
1299     // Get a fresh token
1300     if ($targetPage == Router::$GET_TOKEN) {
1301         header('Content-Type:text/plain');
1302         echo $sessionManager->generateToken();
1303         exit;
1304     }
1305
1306     // -------- Thumbnails Update
1307     if ($targetPage == Router::$PAGE_THUMBS_UPDATE) {
1308         $ids = [];
1309         foreach ($bookmarkService->search() as $bookmark) {
1310             // A note or not HTTP(S)
1311             if ($bookmark->isNote() || ! startsWith(strtolower($bookmark->getUrl()), 'http')) {
1312                 continue;
1313             }
1314             $ids[] = $bookmark->getId();
1315         }
1316         $PAGE->assign('ids', $ids);
1317         $PAGE->assign('pagetitle', t('Thumbnails update') .' - '. $conf->get('general.title', 'Shaarli'));
1318         $PAGE->renderPage('thumbnails');
1319         exit;
1320     }
1321
1322     // -------- Single Thumbnail Update
1323     if ($targetPage == Router::$AJAX_THUMB_UPDATE) {
1324         if (! isset($_POST['id']) || ! ctype_digit($_POST['id'])) {
1325             http_response_code(400);
1326             exit;
1327         }
1328         $id = (int) $_POST['id'];
1329         if (! $bookmarkService->exists($id)) {
1330             http_response_code(404);
1331             exit;
1332         }
1333         $thumbnailer = new Thumbnailer($conf);
1334         $bookmark = $bookmarkService->get($id);
1335         $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1336         $bookmarkService->set($bookmark);
1337
1338         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1339         echo json_encode($factory->getFormatter('raw')->format($bookmark));
1340         exit;
1341     }
1342
1343     // -------- Otherwise, simply display search form and bookmarks:
1344     showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
1345     exit;
1346 }
1347
1348 /**
1349  * Template for the list of bookmarks (<div id="linklist">)
1350  * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1351  *
1352  * @param pageBuilder              $PAGE          pageBuilder instance.
1353  * @param BookmarkServiceInterface $linkDb        LinkDB instance.
1354  * @param ConfigManager            $conf          Configuration Manager instance.
1355  * @param PluginManager            $pluginManager Plugin Manager instance.
1356  * @param LoginManager             $loginManager  LoginManager instance
1357  */
1358 function buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
1359 {
1360     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1361     $formatter = $factory->getFormatter();
1362
1363     // Used in templates
1364     if (isset($_GET['searchtags'])) {
1365         if (! empty($_GET['searchtags'])) {
1366             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1367         } else {
1368             $searchtags = false;
1369         }
1370     } else {
1371         $searchtags = '';
1372     }
1373     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1374
1375     // Smallhash filter
1376     if (! empty($_SERVER['QUERY_STRING'])
1377         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1378         try {
1379             $linksToDisplay = $linkDb->findByHash($_SERVER['QUERY_STRING']);
1380         } catch (BookmarkNotFoundException $e) {
1381             $PAGE->render404($e->getMessage());
1382             exit;
1383         }
1384     } else {
1385         // Filter bookmarks according search parameters.
1386         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : null;
1387         $request = [
1388             'searchtags' => $searchtags,
1389             'searchterm' => $searchterm,
1390         ];
1391         $linksToDisplay = $linkDb->search($request, $visibility, false, !empty($_SESSION['untaggedonly']));
1392     }
1393
1394     // ---- Handle paging.
1395     $keys = array();
1396     foreach ($linksToDisplay as $key => $value) {
1397         $keys[] = $key;
1398     }
1399
1400     // Select articles according to paging.
1401     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1402     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1403     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1404     $page = $page < 1 ? 1 : $page;
1405     $page = $page > $pagecount ? $pagecount : $page;
1406     // Start index.
1407     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1408     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1409
1410     $thumbnailsEnabled = $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE;
1411     if ($thumbnailsEnabled) {
1412         $thumbnailer = new Thumbnailer($conf);
1413     }
1414
1415     $linkDisp = array();
1416     while ($i<$end && $i<count($keys)) {
1417         $link = $formatter->format($linksToDisplay[$keys[$i]]);
1418
1419         // Logged in, thumbnails enabled, not a note,
1420         // and (never retrieved yet or no valid cache file)
1421         if ($loginManager->isLoggedIn()
1422             && $thumbnailsEnabled
1423             && !$linksToDisplay[$keys[$i]]->isNote()
1424             && $linksToDisplay[$keys[$i]]->getThumbnail() !== false
1425             && ! is_file($linksToDisplay[$keys[$i]]->getThumbnail())
1426         ) {
1427             $linksToDisplay[$keys[$i]]->setThumbnail($thumbnailer->get($link['url']));
1428             $linkDb->set($linksToDisplay[$keys[$i]], false);
1429             $updateDB = true;
1430             $link['thumbnail'] = $linksToDisplay[$keys[$i]]->getThumbnail();
1431         }
1432
1433         // Check for both signs of a note: starting with ? and 7 chars long.
1434 //        if ($link['url'][0] === '?' && strlen($link['url']) === 7) {
1435 //            $link['url'] = index_url($_SERVER) . $link['url'];
1436 //        }
1437
1438         $linkDisp[$keys[$i]] = $link;
1439         $i++;
1440     }
1441
1442     // If we retrieved new thumbnails, we update the database.
1443     if (!empty($updateDB)) {
1444         $linkDb->save();
1445     }
1446
1447     // Compute paging navigation
1448     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1449     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1450     $previous_page_url = '';
1451     if ($i != count($keys)) {
1452         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1453     }
1454     $next_page_url='';
1455     if ($page>1) {
1456         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1457     }
1458
1459     // Fill all template fields.
1460     $data = array(
1461         'previous_page_url' => $previous_page_url,
1462         'next_page_url' => $next_page_url,
1463         'page_current' => $page,
1464         'page_max' => $pagecount,
1465         'result_count' => count($linksToDisplay),
1466         'search_term' => $searchterm,
1467         'search_tags' => $searchtags,
1468         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1469         'links' => $linkDisp,
1470     );
1471
1472     // If there is only a single link, we change on-the-fly the title of the page.
1473     if (count($linksToDisplay) == 1) {
1474         $data['pagetitle'] = $linksToDisplay[$keys[0]]->getTitle() .' - '. $conf->get('general.title');
1475     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1476         $data['pagetitle'] = t('Search: ');
1477         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1478         $bracketWrap = function ($tag) {
1479             return '['. $tag .']';
1480         };
1481         $data['pagetitle'] .= ! empty($searchtags)
1482             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1483             : '';
1484         $data['pagetitle'] .= '- '. $conf->get('general.title');
1485     }
1486
1487     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1488
1489     foreach ($data as $key => $value) {
1490         $PAGE->assign($key, $value);
1491     }
1492
1493     return;
1494 }
1495
1496 /**
1497  * Installation
1498  * This function should NEVER be called if the file data/config.php exists.
1499  *
1500  * @param ConfigManager  $conf           Configuration Manager instance.
1501  * @param SessionManager $sessionManager SessionManager instance
1502  * @param LoginManager   $loginManager   LoginManager instance
1503  */
1504 function install($conf, $sessionManager, $loginManager)
1505 {
1506     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1507     if (endsWith($_SERVER['HTTP_HOST'], '.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) {
1508         mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions', 0705);
1509     }
1510
1511
1512     // This part makes sure sessions works correctly.
1513     // (Because on some hosts, session.save_path may not be set correctly,
1514     // or we may not have write access to it.)
1515     if (isset($_GET['test_session'])
1516         && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working')) {
1517         // Step 2: Check if data in session is correct.
1518         $msg = t(
1519             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1520             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1521             'and that you have write access to it.<br>'.
1522             'It currently points to %s.<br>'.
1523             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1524             'or any custom hostname without a dot causes cookie storage to fail. '.
1525             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1526         );
1527         $msg = sprintf($msg, session_save_path());
1528         echo $msg;
1529         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1530         die;
1531     }
1532     if (!isset($_SESSION['session_tested'])) {
1533         // Step 1 : Try to store data in session and reload page.
1534         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1535         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1536     }
1537     if (isset($_GET['test_session'])) {
1538         // Step 3: Sessions are OK. Remove test parameter from URL.
1539         header('Location: '.index_url($_SERVER));
1540     }
1541
1542
1543     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) {
1544         $tz = 'UTC';
1545         if (!empty($_POST['continent']) && !empty($_POST['city'])
1546             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1547         ) {
1548             $tz = $_POST['continent'].'/'.$_POST['city'];
1549         }
1550         $conf->set('general.timezone', $tz);
1551         $login = $_POST['setlogin'];
1552         $conf->set('credentials.login', $login);
1553         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1554         $conf->set('credentials.salt', $salt);
1555         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1556         if (!empty($_POST['title'])) {
1557             $conf->set('general.title', escape($_POST['title']));
1558         } else {
1559             $conf->set('general.title', 'Shared bookmarks on '.escape(index_url($_SERVER)));
1560         }
1561         $conf->set('translation.language', escape($_POST['language']));
1562         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1563         $conf->set('api.enabled', !empty($_POST['enableApi']));
1564         $conf->set(
1565             'api.secret',
1566             generate_api_secret(
1567                 $conf->get('credentials.login'),
1568                 $conf->get('credentials.salt')
1569             )
1570         );
1571         try {
1572             // Everything is ok, let's create config file.
1573             $conf->write($loginManager->isLoggedIn());
1574         } catch (Exception $e) {
1575             error_log(
1576                 'ERROR while writing config file after installation.' . PHP_EOL .
1577                     $e->getMessage()
1578             );
1579
1580             // TODO: do not handle exceptions/errors in JS.
1581             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1582             exit;
1583         }
1584
1585         $history = new History($conf->get('resource.history'));
1586         $bookmarkService = new BookmarkFileService($conf, $history, true);
1587         if ($bookmarkService->count() === 0) {
1588             $bookmarkService->initialize();
1589         }
1590
1591         echo '<script>alert('
1592             .'"Shaarli is now configured. '
1593             .'Please enter your login/password and start shaaring your bookmarks!"'
1594             .');document.location=\'./login\';</script>';
1595         exit;
1596     }
1597
1598     $PAGE = new PageBuilder($conf, $_SESSION, null, $sessionManager->generateToken());
1599     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1600     $PAGE->assign('continents', $continents);
1601     $PAGE->assign('cities', $cities);
1602     $PAGE->assign('languages', Languages::getAvailableLanguages());
1603     $PAGE->renderPage('install');
1604     exit;
1605 }
1606
1607 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
1608     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
1609 }
1610
1611 try {
1612     $history = new History($conf->get('resource.history'));
1613 } catch (Exception $e) {
1614     die($e->getMessage());
1615 }
1616
1617 $linkDb = new BookmarkFileService($conf, $history, $loginManager->isLoggedIn());
1618
1619 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) {
1620     header('Location: ./daily-rss');
1621     exit;
1622 }
1623
1624 $containerBuilder = new ContainerBuilder($conf, $sessionManager, $loginManager, WEB_PATH);
1625 $container = $containerBuilder->build();
1626 $app = new App($container);
1627
1628 // REST API routes
1629 $app->group('/api/v1', function () {
1630     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
1631     $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
1632     $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
1633     $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
1634     $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
1635     $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
1636
1637     $this->get('/tags', '\Shaarli\Api\Controllers\Tags:getTags')->setName('getTags');
1638     $this->get('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:getTag')->setName('getTag');
1639     $this->put('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:putTag')->setName('putTag');
1640     $this->delete('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:deleteTag')->setName('deleteTag');
1641
1642     $this->get('/history', '\Shaarli\Api\Controllers\HistoryController:getHistory')->setName('getHistory');
1643 })->add('\Shaarli\Api\ApiMiddleware');
1644
1645 $app->group('', function () {
1646     $this->get('/login', '\Shaarli\Front\Controller\LoginController:index')->setName('login');
1647     $this->get('/logout', '\Shaarli\Front\Controller\LogoutController:index')->setName('logout');
1648     $this->get('/picture-wall', '\Shaarli\Front\Controller\PictureWallController:index')->setName('picwall');
1649     $this->get('/tag-cloud', '\Shaarli\Front\Controller\TagCloudController:cloud')->setName('tagcloud');
1650     $this->get('/tag-list', '\Shaarli\Front\Controller\TagCloudController:list')->setName('taglist');
1651     $this->get('/daily', '\Shaarli\Front\Controller\DailyController:index')->setName('daily');
1652     $this->get('/daily-rss', '\Shaarli\Front\Controller\DailyController:rss')->setName('dailyrss');
1653
1654     $this->get('/add-tag/{newTag}', '\Shaarli\Front\Controller\TagController:addTag')->setName('add-tag');
1655 })->add('\Shaarli\Front\ShaarliMiddleware');
1656
1657 $response = $app->run(true);
1658
1659 // Hack to make Slim and Shaarli router work together:
1660 // If a Slim route isn't found and NOT API call, we call renderPage().
1661 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
1662     // We use UTF-8 for proper international characters handling.
1663     header('Content-Type: text/html; charset=utf-8');
1664     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
1665 } else {
1666     $response = $response
1667         ->withHeader('Access-Control-Allow-Origin', '*')
1668         ->withHeader(
1669             'Access-Control-Allow-Headers',
1670             'X-Requested-With, Content-Type, Accept, Origin, Authorization'
1671         )
1672         ->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
1673     $app->respond($response);
1674 }