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  * Requires: PHP 5.5.x
  15  */
  16
  17 // Set 'UTC' as the default timezone if it is not defined in php.ini
  18 // See http://php.net/manual/en/datetime.configuration.php#ini.date.timezone
  19 if (date_default_timezone_get() == '') {
  20     date_default_timezone_set('UTC');
  21 }
  22
  23 /*
  24  * PHP configuration
  25  */
  26
  27 // http://server.com/x/shaarli --> /shaarli/
  28 define('WEB_PATH', substr($_SERVER['REQUEST_URI'], 0, 1+strrpos($_SERVER['REQUEST_URI'], '/', 0)));
  29
  30 // High execution time in case of problematic imports/exports.
  31 ini_set('max_input_time','60');
  32
  33 // Try to set max upload file size and read
  34 ini_set('memory_limit', '128M');
  35 ini_set('post_max_size', '16M');
  36 ini_set('upload_max_filesize', '16M');
  37
  38 // See all error except warnings
  39 error_reporting(E_ALL^E_WARNING);
  40 // See all errors (for debugging only)
  41 //error_reporting(-1);
  42
  43
  44 // 3rd-party libraries
  45 if (! file_exists(__DIR__ . '/vendor/autoload.php')) {
  46     header('Content-Type: text/plain; charset=utf-8');
  47     echo "Error: missing Composer configuration\n\n"
  48         ."If you installed Shaarli through Git or using the development branch,\n"
  49         ."please refer to the installation documentation to install PHP"
  50         ." dependencies using Composer:\n"
  51         ."- https://shaarli.readthedocs.io/en/master/Server-requirements/\n"
  52         ."- https://shaarli.readthedocs.io/en/master/Download-and-Installation/";
  53     exit;
  54 }
  55 require_once 'inc/rain.tpl.class.php';
  56 require_once __DIR__ . '/vendor/autoload.php';
  57
  58 // Shaarli library
  59 require_once 'application/ApplicationUtils.php';
  60 require_once 'application/Cache.php';
  61 require_once 'application/CachedPage.php';
  62 require_once 'application/config/ConfigPlugin.php';
  63 require_once 'application/FeedBuilder.php';
  64 require_once 'application/FileUtils.php';
  65 require_once 'application/History.php';
  66 require_once 'application/HttpUtils.php';
  67 require_once 'application/LinkDB.php';
  68 require_once 'application/LinkFilter.php';
  69 require_once 'application/LinkUtils.php';
  70 require_once 'application/NetscapeBookmarkUtils.php';
  71 require_once 'application/PageBuilder.php';
  72 require_once 'application/TimeZone.php';
  73 require_once 'application/Url.php';
  74 require_once 'application/Utils.php';
  75 require_once 'application/PluginManager.php';
  76 require_once 'application/Router.php';
  77 require_once 'application/Updater.php';
  78 use \Shaarli\Languages;
  79 use \Shaarli\ThemeUtils;
  80 use \Shaarli\Config\ConfigManager;
  81 use \Shaarli\Security\LoginManager;
  82 use \Shaarli\Security\SessionManager;
  83
  84 // Ensure the PHP version is supported
  85 try {
  86     ApplicationUtils::checkPHPVersion('5.5', PHP_VERSION);
  87 } catch(Exception $exc) {
  88     header('Content-Type: text/plain; charset=utf-8');
  89     echo $exc->getMessage();
  90     exit;
  91 }
  92
  93 define('SHAARLI_VERSION', ApplicationUtils::getVersion(__DIR__ .'/'. ApplicationUtils::$VERSION_FILE));
  94
  95 // Force cookie path (but do not change lifetime)
  96 $cookie = session_get_cookie_params();
  97 $cookiedir = '';
  98 if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
  99     $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
 100 }
 101 // Set default cookie expiration and path.
 102 session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
 103 // Set session parameters on server side.
 104 // Use cookies to store session.
 105 ini_set('session.use_cookies', 1);
 106 // Force cookies for session (phpsessionID forbidden in URL).
 107 ini_set('session.use_only_cookies', 1);
 108 // Prevent PHP form using sessionID in URL if cookies are disabled.
 109 ini_set('session.use_trans_sid', false);
 110
 111 session_name('shaarli');
 112 // Start session if needed (Some server auto-start sessions).
 113 if (session_id() == '') {
 114     session_start();
 115 }
 116
 117 // Regenerate session ID if invalid or not defined in cookie.
 118 if (isset($_COOKIE['shaarli']) && !SessionManager::checkId($_COOKIE['shaarli'])) {
 119     session_regenerate_id(true);
 120     $_COOKIE['shaarli'] = session_id();
 121 }
 122
 123 $conf = new ConfigManager();
 124 $sessionManager = new SessionManager($_SESSION, $conf);
 125 $loginManager = new LoginManager($GLOBALS, $conf, $sessionManager);
 126 $clientIpId = client_ip_id($_SERVER);
 127
 128 // LC_MESSAGES isn't defined without php-intl, in this case use LC_COLLATE locale instead.
 129 if (! defined('LC_MESSAGES')) {
 130     define('LC_MESSAGES', LC_COLLATE);
 131 }
 132
 133 // Sniff browser language and set date format accordingly.
 134 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
 135     autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']);
 136 }
 137
 138 new Languages(setlocale(LC_MESSAGES, 0), $conf);
 139
 140 $conf->setEmpty('general.timezone', date_default_timezone_get());
 141 $conf->setEmpty('general.title', t('Shared links on '). escape(index_url($_SERVER)));
 142 RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl').'/'.$conf->get('resource.theme').'/'; // template directory
 143 RainTPL::$cache_dir = $conf->get('resource.raintpl_tmp'); // cache directory
 144
 145 $pluginManager = new PluginManager($conf);
 146 $pluginManager->load($conf->get('general.enabled_plugins'));
 147
 148 date_default_timezone_set($conf->get('general.timezone', 'UTC'));
 149
 150 ob_start();  // Output buffering for the page cache.
 151
 152 // Prevent caching on client side or proxy: (yes, it's ugly)
 153 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
 154 header("Cache-Control: no-store, no-cache, must-revalidate");
 155 header("Cache-Control: post-check=0, pre-check=0", false);
 156 header("Pragma: no-cache");
 157
 158 if (! is_file($conf->getConfigFileExt())) {
 159     // Ensure Shaarli has proper access to its resources
 160     $errors = ApplicationUtils::checkResourcePermissions($conf);
 161
 162     if ($errors != array()) {
 163         $message = '<p>'. t('Insufficient permissions:') .'</p><ul>';
 164
 165         foreach ($errors as $error) {
 166             $message .= '<li>'.$error.'</li>';
 167         }
 168         $message .= '</ul>';
 169
 170         header('Content-Type: text/html; charset=utf-8');
 171         echo $message;
 172         exit;
 173     }
 174
 175     // Display the installation form if no existing config is found
 176     install($conf, $sessionManager);
 177 }
 178
 179 // a token depending of deployment salt, user password, and the current ip
 180 define('STAY_SIGNED_IN_TOKEN', sha1($conf->get('credentials.hash') . $_SERVER['REMOTE_ADDR'] . $conf->get('credentials.salt')));
 181
 182 $loginManager->checkLoginState($_COOKIE, $clientIpId, STAY_SIGNED_IN_TOKEN);
 183
 184 /**
 185  * Adapter function to ensure compatibility with third-party templates
 186  *
 187  * @see https://github.com/shaarli/Shaarli/pull/1086
 188  *
 189  * @return bool true when the user is logged in, false otherwise
 190  */
 191 function isLoggedIn()
 192 {
 193     global $loginManager;
 194     return $loginManager->isLoggedIn();
 195 }
 196
 197
 198 // ------------------------------------------------------------------------------------------
 199 // Process login form: Check if login/password is correct.
 200 if (isset($_POST['login'])) {
 201     if (! $loginManager->canLogin($_SERVER)) {
 202         die(t('I said: NO. You are banned for the moment. Go away.'));
 203     }
 204     if (isset($_POST['password'])
 205         && $sessionManager->checkToken($_POST['token'])
 206         && $loginManager->checkCredentials($_SERVER['REMOTE_ADDR'], $clientIpId, $_POST['login'], $_POST['password'])
 207     ) {
 208         $loginManager->handleSuccessfulLogin($_SERVER);
 209
 210         $cookiedir = '';
 211         if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 212             // Note: Never forget the trailing slash on the cookie path!
 213             $cookiedir = dirname($_SERVER["SCRIPT_NAME"]) . '/';
 214         }
 215
 216         if (!empty($_POST['longlastingsession'])) {
 217             // Keep the session cookie even after the browser closes
 218             $sessionManager->setStaySignedIn(true);
 219             $expirationTime = $sessionManager->extendSession();
 220
 221             setcookie(
 222                 $sessionManager::$LOGGED_IN_COOKIE,
 223                 STAY_SIGNED_IN_TOKEN,
 224                 $expirationTime,
 225                 WEB_PATH
 226             );
 227
 228         } else {
 229             // Standard session expiration (=when browser closes)
 230             $expirationTime = 0;
 231         }
 232
 233         // Send cookie with the new expiration date to the browser
 234         session_set_cookie_params($expirationTime, $cookiedir, $_SERVER['SERVER_NAME']);
 235         session_regenerate_id(true);
 236
 237         // Optional redirect after login:
 238         if (isset($_GET['post'])) {
 239             $uri = '?post='. urlencode($_GET['post']);
 240             foreach (array('description', 'source', 'title', 'tags') as $param) {
 241                 if (!empty($_GET[$param])) {
 242                     $uri .= '&'.$param.'='.urlencode($_GET[$param]);
 243                 }
 244             }
 245             header('Location: '. $uri);
 246             exit;
 247         }
 248
 249         if (isset($_GET['edit_link'])) {
 250             header('Location: ?edit_link='. escape($_GET['edit_link']));
 251             exit;
 252         }
 253
 254         if (isset($_POST['returnurl'])) {
 255             // Prevent loops over login screen.
 256             if (strpos($_POST['returnurl'], 'do=login') === false) {
 257                 header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST']));
 258                 exit;
 259             }
 260         }
 261         header('Location: ?'); exit;
 262     } else {
 263         $loginManager->handleFailedLogin($_SERVER);
 264         $redir = '&username='. urlencode($_POST['login']);
 265         if (isset($_GET['post'])) {
 266             $redir .= '&post=' . urlencode($_GET['post']);
 267             foreach (array('description', 'source', 'title', 'tags') as $param) {
 268                 if (!empty($_GET[$param])) {
 269                     $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
 270                 }
 271             }
 272         }
 273         // Redirect to login screen.
 274         echo '<script>alert("'. t("Wrong login/password.") .'");document.location=\'?do=login'.$redir.'\';</script>';
 275         exit;
 276     }
 277 }
 278
 279 // ------------------------------------------------------------------------------------------
 280 // Token management for XSRF protection
 281 // Token should be used in any form which acts on data (create,update,delete,import...).
 282 if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array();  // Token are attached to the session.
 283
 284 /**
 285  * Daily RSS feed: 1 RSS entry per day giving all the links on that day.
 286  * Gives the last 7 days (which have links).
 287  * This RSS feed cannot be filtered.
 288  *
 289  * @param ConfigManager $conf         Configuration Manager instance
 290  * @param LoginManager  $loginManager LoginManager instance
 291  */
 292 function showDailyRSS($conf, $loginManager) {
 293     // Cache system
 294     $query = $_SERVER['QUERY_STRING'];
 295     $cache = new CachedPage(
 296         $conf->get('config.PAGE_CACHE'),
 297         page_url($_SERVER),
 298         startsWith($query,'do=dailyrss') && !$loginManager->isLoggedIn()
 299     );
 300     $cached = $cache->cachedVersion();
 301     if (!empty($cached)) {
 302         echo $cached;
 303         exit;
 304     }
 305
 306     // If cached was not found (or not usable), then read the database and build the response:
 307     // Read links from database (and filter private links if used it not logged in).
 308     $LINKSDB = new LinkDB(
 309         $conf->get('resource.datastore'),
 310         $loginManager->isLoggedIn(),
 311         $conf->get('privacy.hide_public_links'),
 312         $conf->get('redirector.url'),
 313         $conf->get('redirector.encode_url')
 314     );
 315
 316     /* Some Shaarlies may have very few links, so we need to look
 317        back in time until we have enough days ($nb_of_days).
 318     */
 319     $nb_of_days = 7; // We take 7 days.
 320     $today = date('Ymd');
 321     $days = array();
 322
 323     foreach ($LINKSDB as $link) {
 324         $day = $link['created']->format('Ymd'); // Extract day (without time)
 325         if (strcmp($day, $today) < 0) {
 326             if (empty($days[$day])) {
 327                 $days[$day] = array();
 328             }
 329             $days[$day][] = $link;
 330         }
 331
 332         if (count($days) > $nb_of_days) {
 333             break; // Have we collected enough days?
 334         }
 335     }
 336
 337     // Build the RSS feed.
 338     header('Content-Type: application/rss+xml; charset=utf-8');
 339     $pageaddr = escape(index_url($_SERVER));
 340     echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
 341     echo '<channel>';
 342     echo '<title>Daily - '. $conf->get('general.title') . '</title>';
 343     echo '<link>'. $pageaddr .'</link>';
 344     echo '<description>Daily shared links</description>';
 345     echo '<language>en-en</language>';
 346     echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
 347
 348     // For each day.
 349     foreach ($days as $day => $links) {
 350         $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
 351         $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day);  // Absolute URL of the corresponding "Daily" page.
 352
 353         // We pre-format some fields for proper output.
 354         foreach ($links as &$link) {
 355             $link['formatedDescription'] = format_description(
 356                 $link['description'],
 357                 $conf->get('redirector.url'),
 358                 $conf->get('redirector.encode_url')
 359             );
 360             $link['thumbnail'] = thumbnail($conf, $link['url']);
 361             $link['timestamp'] = $link['created']->getTimestamp();
 362             if (startsWith($link['url'], '?')) {
 363                 $link['url'] = index_url($_SERVER) . $link['url'];  // make permalink URL absolute
 364             }
 365         }
 366
 367         // Then build the HTML for this day:
 368         $tpl = new RainTPL;
 369         $tpl->assign('title', $conf->get('general.title'));
 370         $tpl->assign('daydate', $dayDate->getTimestamp());
 371         $tpl->assign('absurl', $absurl);
 372         $tpl->assign('links', $links);
 373         $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
 374         $tpl->assign('hide_timestamps', $conf->get('privacy.hide_timestamps', false));
 375         $html = $tpl->draw('dailyrss', true);
 376
 377         echo $html . PHP_EOL;
 378     }
 379     echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
 380
 381     $cache->cache(ob_get_contents());
 382     ob_end_flush();
 383     exit;
 384 }
 385
 386 /**
 387  * Show the 'Daily' page.
 388  *
 389  * @param PageBuilder   $pageBuilder   Template engine wrapper.
 390  * @param LinkDB        $LINKSDB       LinkDB instance.
 391  * @param ConfigManager $conf          Configuration Manager instance.
 392  * @param PluginManager $pluginManager Plugin Manager instance.
 393  * @param LoginManager  $loginManager  Login Manager instance
 394  */
 395 function showDaily($pageBuilder, $LINKSDB, $conf, $pluginManager, $loginManager)
 396 {
 397     $day = date('Ymd', strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
 398     if (isset($_GET['day'])) {
 399       $day = $_GET['day'];
 400     }
 401
 402     $days = $LINKSDB->days();
 403     $i = array_search($day, $days);
 404     if ($i === false && count($days)) {
 405         // no links for day, but at least one day with links
 406         $i = count($days) - 1;
 407         $day = $days[$i];
 408     }
 409     $previousday = '';
 410     $nextday = '';
 411
 412     if ($i !== false) {
 413         if ($i >= 1) {
 414              $previousday=$days[$i - 1];
 415         }
 416         if ($i < count($days) - 1) {
 417           $nextday = $days[$i + 1];
 418         }
 419     }
 420     try {
 421         $linksToDisplay = $LINKSDB->filterDay($day);
 422     } catch (Exception $exc) {
 423         error_log($exc);
 424         $linksToDisplay = array();
 425     }
 426
 427     // We pre-format some fields for proper output.
 428     foreach($linksToDisplay as $key => $link) {
 429         $taglist = explode(' ',$link['tags']);
 430         uasort($taglist, 'strcasecmp');
 431         $linksToDisplay[$key]['taglist']=$taglist;
 432         $linksToDisplay[$key]['formatedDescription'] = format_description(
 433             $link['description'],
 434             $conf->get('redirector.url'),
 435             $conf->get('redirector.encode_url')
 436         );
 437         $linksToDisplay[$key]['thumbnail'] = thumbnail($conf, $link['url']);
 438         $linksToDisplay[$key]['timestamp'] =  $link['created']->getTimestamp();
 439     }
 440
 441     $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
 442     $data = array(
 443         'pagetitle' => $conf->get('general.title') .' - '. format_date($dayDate, false),
 444         'linksToDisplay' => $linksToDisplay,
 445         'day' => $dayDate->getTimestamp(),
 446         'dayDate' => $dayDate,
 447         'previousday' => $previousday,
 448         'nextday' => $nextday,
 449     );
 450
 451     /* Hook is called before column construction so that plugins don't have
 452        to deal with columns. */
 453     $pluginManager->executeHooks('render_daily', $data, array('loggedin' => $loginManager->isLoggedIn()));
 454
 455     /* We need to spread the articles on 3 columns.
 456        I did not want to use a JavaScript lib like http://masonry.desandro.com/
 457        so I manually spread entries with a simple method: I roughly evaluate the
 458        height of a div according to title and description length.
 459     */
 460     $columns = array(array(), array(), array()); // Entries to display, for each column.
 461     $fill = array(0, 0, 0);  // Rough estimate of columns fill.
 462     foreach($data['linksToDisplay'] as $key => $link) {
 463         // Roughly estimate length of entry (by counting characters)
 464         // Title: 30 chars = 1 line. 1 line is 30 pixels height.
 465         // Description: 836 characters gives roughly 342 pixel height.
 466         // This is not perfect, but it's usually OK.
 467         $length = strlen($link['title']) + (342 * strlen($link['description'])) / 836;
 468         if ($link['thumbnail']) {
 469           $length += 100; // 1 thumbnails roughly takes 100 pixels height.
 470         }
 471         // Then put in column which is the less filled:
 472         $smallest = min($fill); // find smallest value in array.
 473         $index = array_search($smallest, $fill); // find index of this smallest value.
 474         array_push($columns[$index], $link); // Put entry in this column.
 475         $fill[$index] += $length;
 476     }
 477
 478     $data['cols'] = $columns;
 479
 480     foreach ($data as $key => $value) {
 481         $pageBuilder->assign($key, $value);
 482     }
 483
 484     $pageBuilder->assign('pagetitle', t('Daily') .' - '. $conf->get('general.title', 'Shaarli'));
 485     $pageBuilder->renderPage('daily');
 486     exit;
 487 }
 488
 489 /**
 490  * Renders the linklist
 491  *
 492  * @param pageBuilder   $PAGE    pageBuilder instance.
 493  * @param LinkDB        $LINKSDB LinkDB instance.
 494  * @param ConfigManager $conf    Configuration Manager instance.
 495  * @param PluginManager $pluginManager Plugin Manager instance.
 496  */
 497 function showLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager) {
 498     buildLinkList($PAGE,$LINKSDB, $conf, $pluginManager, $loginManager);
 499     $PAGE->renderPage('linklist');
 500 }
 501
 502 /**
 503  * Render HTML page (according to URL parameters and user rights)
 504  *
 505  * @param ConfigManager  $conf           Configuration Manager instance.
 506  * @param PluginManager  $pluginManager  Plugin Manager instance,
 507  * @param LinkDB         $LINKSDB
 508  * @param History        $history        instance
 509  * @param SessionManager $sessionManager SessionManager instance
 510  * @param LoginManager   $loginManager   LoginManager instance
 511  */
 512 function renderPage($conf, $pluginManager, $LINKSDB, $history, $sessionManager, $loginManager)
 513 {
 514     $updater = new Updater(
 515         read_updates_file($conf->get('resource.updates')),
 516         $LINKSDB,
 517         $conf,
 518         $loginManager->isLoggedIn()
 519     );
 520     try {
 521         $newUpdates = $updater->update();
 522         if (! empty($newUpdates)) {
 523             write_updates_file(
 524                 $conf->get('resource.updates'),
 525                 $updater->getDoneUpdates()
 526             );
 527         }
 528     }
 529     catch(Exception $e) {
 530         die($e->getMessage());
 531     }
 532
 533     $PAGE = new PageBuilder($conf, $LINKSDB, $sessionManager->generateToken(), $loginManager->isLoggedIn());
 534     $PAGE->assign('linkcount', count($LINKSDB));
 535     $PAGE->assign('privateLinkcount', count_private($LINKSDB));
 536     $PAGE->assign('plugin_errors', $pluginManager->getErrors());
 537
 538     // Determine which page will be rendered.
 539     $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
 540     $targetPage = Router::findPage($query, $_GET, $loginManager->isLoggedIn());
 541
 542     if (
 543         // if the user isn't logged in
 544         !$loginManager->isLoggedIn() &&
 545         // and Shaarli doesn't have public content...
 546         $conf->get('privacy.hide_public_links') &&
 547         // and is configured to enforce the login
 548         $conf->get('privacy.force_login') &&
 549         // and the current page isn't already the login page
 550         $targetPage !== Router::$PAGE_LOGIN &&
 551         // and the user is not requesting a feed (which would lead to a different content-type as expected)
 552         $targetPage !== Router::$PAGE_FEED_ATOM &&
 553         $targetPage !== Router::$PAGE_FEED_RSS
 554     ) {
 555         // force current page to be the login page
 556         $targetPage = Router::$PAGE_LOGIN;
 557     }
 558
 559     // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
 560     // Then assign generated data to RainTPL.
 561     $common_hooks = array(
 562         'includes',
 563         'header',
 564         'footer',
 565     );
 566
 567     foreach($common_hooks as $name) {
 568         $plugin_data = array();
 569         $pluginManager->executeHooks('render_' . $name, $plugin_data,
 570             array(
 571                 'target' => $targetPage,
 572                 'loggedin' => $loginManager->isLoggedIn()
 573             )
 574         );
 575         $PAGE->assign('plugins_' . $name, $plugin_data);
 576     }
 577
 578     // -------- Display login form.
 579     if ($targetPage == Router::$PAGE_LOGIN)
 580     {
 581         if ($conf->get('security.open_shaarli')) { header('Location: ?'); exit; }  // No need to login for open Shaarli
 582         if (isset($_GET['username'])) {
 583             $PAGE->assign('username', escape($_GET['username']));
 584         }
 585         $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
 586         // add default state of the 'remember me' checkbox
 587         $PAGE->assign('remember_user_default', $conf->get('privacy.remember_user_default'));
 588         $PAGE->assign('user_can_login', $loginManager->canLogin($_SERVER));
 589         $PAGE->assign('pagetitle', t('Login') .' - '. $conf->get('general.title', 'Shaarli'));
 590         $PAGE->renderPage('loginform');
 591         exit;
 592     }
 593     // -------- User wants to logout.
 594     if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout'))
 595     {
 596         invalidateCaches($conf->get('resource.page_cache'));
 597         $sessionManager->logout();
 598         setcookie(SessionManager::$LOGGED_IN_COOKIE, 'false', 0, WEB_PATH);
 599         header('Location: ?');
 600         exit;
 601     }
 602
 603     // -------- Picture wall
 604     if ($targetPage == Router::$PAGE_PICWALL)
 605     {
 606         // Optionally filter the results:
 607         $links = $LINKSDB->filterSearch($_GET);
 608         $linksToDisplay = array();
 609
 610         // Get only links which have a thumbnail.
 611         foreach($links as $link)
 612         {
 613             $permalink='?'.$link['shorturl'];
 614             $thumb=lazyThumbnail($conf, $link['url'],$permalink);
 615             if ($thumb!='') // Only output links which have a thumbnail.
 616             {
 617                 $link['thumbnail']=$thumb; // Thumbnail HTML code.
 618                 $linksToDisplay[]=$link; // Add to array.
 619             }
 620         }
 621
 622         $data = array(
 623             'linksToDisplay' => $linksToDisplay,
 624         );
 625         $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => $loginManager->isLoggedIn()));
 626
 627         foreach ($data as $key => $value) {
 628             $PAGE->assign($key, $value);
 629         }
 630
 631         $PAGE->assign('pagetitle', t('Picture wall') .' - '. $conf->get('general.title', 'Shaarli'));
 632         $PAGE->renderPage('picwall');
 633         exit;
 634     }
 635
 636     // -------- Tag cloud
 637     if ($targetPage == Router::$PAGE_TAGCLOUD)
 638     {
 639         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 640         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 641         $tags = $LINKSDB->linksCountPerTag($filteringTags, $visibility);
 642
 643         // We sort tags alphabetically, then choose a font size according to count.
 644         // First, find max value.
 645         $maxcount = 0;
 646         foreach ($tags as $value) {
 647             $maxcount = max($maxcount, $value);
 648         }
 649
 650         alphabetical_sort($tags, false, true);
 651
 652         $tagList = array();
 653         foreach($tags as $key => $value) {
 654             if (in_array($key, $filteringTags)) {
 655                 continue;
 656             }
 657             // Tag font size scaling:
 658             //   default 15 and 30 logarithm bases affect scaling,
 659             //   22 and 6 are arbitrary font sizes for max and min sizes.
 660             $size = log($value, 15) / log($maxcount, 30) * 2.2 + 0.8;
 661             $tagList[$key] = array(
 662                 'count' => $value,
 663                 'size' => number_format($size, 2, '.', ''),
 664             );
 665         }
 666
 667         $searchTags = implode(' ', escape($filteringTags));
 668         $data = array(
 669             'search_tags' => $searchTags,
 670             'tags' => $tagList,
 671         );
 672         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => $loginManager->isLoggedIn()));
 673
 674         foreach ($data as $key => $value) {
 675             $PAGE->assign($key, $value);
 676         }
 677
 678         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 679         $PAGE->assign('pagetitle', $searchTags. t('Tag cloud') .' - '. $conf->get('general.title', 'Shaarli'));
 680         $PAGE->renderPage('tag.cloud');
 681         exit;
 682     }
 683
 684     // -------- Tag list
 685     if ($targetPage == Router::$PAGE_TAGLIST)
 686     {
 687         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 688         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 689         $tags = $LINKSDB->linksCountPerTag($filteringTags, $visibility);
 690         foreach ($filteringTags as $tag) {
 691             if (array_key_exists($tag, $tags)) {
 692                 unset($tags[$tag]);
 693             }
 694         }
 695
 696         if (! empty($_GET['sort']) && $_GET['sort'] === 'alpha') {
 697             alphabetical_sort($tags, false, true);
 698         }
 699
 700         $searchTags = implode(' ', escape($filteringTags));
 701         $data = [
 702             'search_tags' => $searchTags,
 703             'tags' => $tags,
 704         ];
 705         $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => $loginManager->isLoggedIn()]);
 706
 707         foreach ($data as $key => $value) {
 708             $PAGE->assign($key, $value);
 709         }
 710
 711         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 712         $PAGE->assign('pagetitle', $searchTags . t('Tag list') .' - '. $conf->get('general.title', 'Shaarli'));
 713         $PAGE->renderPage('tag.list');
 714         exit;
 715     }
 716
 717     // Daily page.
 718     if ($targetPage == Router::$PAGE_DAILY) {
 719         showDaily($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager);
 720     }
 721
 722     // ATOM and RSS feed.
 723     if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
 724         $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
 725         header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
 726
 727         // Cache system
 728         $query = $_SERVER['QUERY_STRING'];
 729         $cache = new CachedPage(
 730             $conf->get('resource.page_cache'),
 731             page_url($_SERVER),
 732             startsWith($query,'do='. $targetPage) && !$loginManager->isLoggedIn()
 733         );
 734         $cached = $cache->cachedVersion();
 735         if (!empty($cached)) {
 736             echo $cached;
 737             exit;
 738         }
 739
 740         // Generate data.
 741         $feedGenerator = new FeedBuilder($LINKSDB, $feedType, $_SERVER, $_GET, $loginManager->isLoggedIn());
 742         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 743         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 744         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 745         $data = $feedGenerator->buildData();
 746
 747         // Process plugin hook.
 748         $pluginManager->executeHooks('render_feed', $data, array(
 749             'loggedin' => $loginManager->isLoggedIn(),
 750             'target' => $targetPage,
 751         ));
 752
 753         // Render the template.
 754         $PAGE->assignAll($data);
 755         $PAGE->renderPage('feed.'. $feedType);
 756         $cache->cache(ob_get_contents());
 757         ob_end_flush();
 758         exit;
 759     }
 760
 761     // Display opensearch plugin (XML)
 762     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 763         header('Content-Type: application/xml; charset=utf-8');
 764         $PAGE->assign('serverurl', index_url($_SERVER));
 765         $PAGE->renderPage('opensearch');
 766         exit;
 767     }
 768
 769     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 770     if (isset($_GET['addtag']))
 771     {
 772         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
 773         if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
 774         parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
 775
 776         // Prevent redirection loop
 777         if (isset($params['addtag'])) {
 778             unset($params['addtag']);
 779         }
 780
 781         // Check if this tag is already in the search query and ignore it if it is.
 782         // Each tag is always separated by a space
 783         if (isset($params['searchtags'])) {
 784             $current_tags = explode(' ', $params['searchtags']);
 785         } else {
 786             $current_tags = array();
 787         }
 788         $addtag = true;
 789         foreach ($current_tags as $value) {
 790             if ($value === $_GET['addtag']) {
 791                 $addtag = false;
 792                 break;
 793             }
 794         }
 795         // Append the tag if necessary
 796         if (empty($params['searchtags'])) {
 797             $params['searchtags'] = trim($_GET['addtag']);
 798         }
 799         elseif ($addtag) {
 800             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
 801         }
 802
 803         unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
 804         header('Location: ?'.http_build_query($params));
 805         exit;
 806     }
 807
 808     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 809     if (isset($_GET['removetag'])) {
 810         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 811         if (empty($_SERVER['HTTP_REFERER'])) {
 812             header('Location: ?');
 813             exit;
 814         }
 815
 816         // In case browser does not send HTTP_REFERER
 817         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 818
 819         // Prevent redirection loop
 820         if (isset($params['removetag'])) {
 821             unset($params['removetag']);
 822         }
 823
 824         if (isset($params['searchtags'])) {
 825             $tags = explode(' ', $params['searchtags']);
 826             // Remove value from array $tags.
 827             $tags = array_diff($tags, array($_GET['removetag']));
 828             $params['searchtags'] = implode(' ',$tags);
 829
 830             if (empty($params['searchtags'])) {
 831                 unset($params['searchtags']);
 832             }
 833
 834             unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
 835         }
 836         header('Location: ?'.http_build_query($params));
 837         exit;
 838     }
 839
 840     // -------- User wants to change the number of links per page (linksperpage=...)
 841     if (isset($_GET['linksperpage'])) {
 842         if (is_numeric($_GET['linksperpage'])) {
 843             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 844         }
 845
 846         if (! empty($_SERVER['HTTP_REFERER'])) {
 847             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 848         } else {
 849             $location = '?';
 850         }
 851         header('Location: '. $location);
 852         exit;
 853     }
 854
 855     // -------- User wants to see only private links (toggle)
 856     if (isset($_GET['visibility'])) {
 857         if ($_GET['visibility'] === 'private') {
 858             // Visibility not set or not already private, set private, otherwise reset it
 859             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 860                 // See only private links
 861                 $_SESSION['visibility'] = 'private';
 862             } else {
 863                 unset($_SESSION['visibility']);
 864             }
 865         } elseif ($_GET['visibility'] === 'public') {
 866             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 867                 // See only public links
 868                 $_SESSION['visibility'] = 'public';
 869             } else {
 870                 unset($_SESSION['visibility']);
 871             }
 872         }
 873
 874         if (! empty($_SERVER['HTTP_REFERER'])) {
 875             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 876         } else {
 877             $location = '?';
 878         }
 879         header('Location: '. $location);
 880         exit;
 881     }
 882
 883     // -------- User wants to see only untagged links (toggle)
 884     if (isset($_GET['untaggedonly'])) {
 885         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 886
 887         if (! empty($_SERVER['HTTP_REFERER'])) {
 888             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 889         } else {
 890             $location = '?';
 891         }
 892         header('Location: '. $location);
 893         exit;
 894     }
 895
 896     // -------- Handle other actions allowed for non-logged in users:
 897     if (!$loginManager->isLoggedIn())
 898     {
 899         // User tries to post new link but is not logged in:
 900         // Show login screen, then redirect to ?post=...
 901         if (isset($_GET['post']))
 902         {
 903             header( // Redirect to login page, then back to post link.
 904                 'Location: ?do=login&post='.urlencode($_GET['post']).
 905                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 906                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 907                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 908                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 909             );
 910             exit;
 911         }
 912
 913         showLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager);
 914         if (isset($_GET['edit_link'])) {
 915             header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
 916             exit;
 917         }
 918
 919         exit; // Never remove this one! All operations below are reserved for logged in user.
 920     }
 921
 922     // -------- All other functions are reserved for the registered user:
 923
 924     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 925     if ($targetPage == Router::$PAGE_TOOLS)
 926     {
 927         $data = [
 928             'pageabsaddr' => index_url($_SERVER),
 929             'sslenabled' => is_https($_SERVER),
 930         ];
 931         $pluginManager->executeHooks('render_tools', $data);
 932
 933         foreach ($data as $key => $value) {
 934             $PAGE->assign($key, $value);
 935         }
 936
 937         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 938         $PAGE->renderPage('tools');
 939         exit;
 940     }
 941
 942     // -------- User wants to change his/her password.
 943     if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
 944     {
 945         if ($conf->get('security.open_shaarli')) {
 946             die(t('You are not supposed to change a password on an Open Shaarli.'));
 947         }
 948
 949         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
 950         {
 951             if (!$sessionManager->checkToken($_POST['token'])) die(t('Wrong token.')); // Go away!
 952
 953             // Make sure old password is correct.
 954             $oldhash = sha1($_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt'));
 955             if ($oldhash!= $conf->get('credentials.hash')) {
 956                 echo '<script>alert("'. t('The old password is not correct.') .'");document.location=\'?do=changepasswd\';</script>';
 957                 exit;
 958             }
 959             // Save new password
 960             // Salt renders rainbow-tables attacks useless.
 961             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 962             $conf->set('credentials.hash', sha1($_POST['setpassword'] . $conf->get('credentials.login') . $conf->get('credentials.salt')));
 963             try {
 964                 $conf->write($loginManager->isLoggedIn());
 965             }
 966             catch(Exception $e) {
 967                 error_log(
 968                     'ERROR while writing config file after changing password.' . PHP_EOL .
 969                     $e->getMessage()
 970                 );
 971
 972                 // TODO: do not handle exceptions/errors in JS.
 973                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
 974                 exit;
 975             }
 976             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'?do=tools\';</script>';
 977             exit;
 978         }
 979         else // show the change password form.
 980         {
 981             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
 982             $PAGE->renderPage('changepassword');
 983             exit;
 984         }
 985     }
 986
 987     // -------- User wants to change configuration
 988     if ($targetPage == Router::$PAGE_CONFIGURE)
 989     {
 990         if (!empty($_POST['title']) )
 991         {
 992             if (!$sessionManager->checkToken($_POST['token'])) {
 993                 die(t('Wrong token.')); // Go away!
 994             }
 995             $tz = 'UTC';
 996             if (!empty($_POST['continent']) && !empty($_POST['city'])
 997                 && isTimeZoneValid($_POST['continent'], $_POST['city'])
 998             ) {
 999                 $tz = $_POST['continent'] . '/' . $_POST['city'];
1000             }
1001             $conf->set('general.timezone', $tz);
1002             $conf->set('general.title', escape($_POST['title']));
1003             $conf->set('general.header_link', escape($_POST['titleLink']));
1004             $conf->set('resource.theme', escape($_POST['theme']));
1005             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
1006             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
1007             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
1008             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1009             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
1010             $conf->set('api.enabled', !empty($_POST['enableApi']));
1011             $conf->set('api.secret', escape($_POST['apiSecret']));
1012             $conf->set('translation.language', escape($_POST['language']));
1013
1014             try {
1015                 $conf->write($loginManager->isLoggedIn());
1016                 $history->updateSettings();
1017                 invalidateCaches($conf->get('resource.page_cache'));
1018             }
1019             catch(Exception $e) {
1020                 error_log(
1021                     'ERROR while writing config file after configuration update.' . PHP_EOL .
1022                     $e->getMessage()
1023                 );
1024
1025                 // TODO: do not handle exceptions/errors in JS.
1026                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=configure\';</script>';
1027                 exit;
1028             }
1029             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'?do=configure\';</script>';
1030             exit;
1031         }
1032         else // Show the configuration form.
1033         {
1034             $PAGE->assign('title', $conf->get('general.title'));
1035             $PAGE->assign('theme', $conf->get('resource.theme'));
1036             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
1037             list($continents, $cities) = generateTimeZoneData(
1038                 timezone_identifiers_list(),
1039                 $conf->get('general.timezone')
1040             );
1041             $PAGE->assign('continents', $continents);
1042             $PAGE->assign('cities', $cities);
1043             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
1044             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
1045             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
1046             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
1047             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
1048             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
1049             $PAGE->assign('api_secret', $conf->get('api.secret'));
1050             $PAGE->assign('languages', Languages::getAvailableLanguages());
1051             $PAGE->assign('language', $conf->get('translation.language'));
1052             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
1053             $PAGE->renderPage('configure');
1054             exit;
1055         }
1056     }
1057
1058     // -------- User wants to rename a tag or delete it
1059     if ($targetPage == Router::$PAGE_CHANGETAG)
1060     {
1061         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1062             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
1063             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
1064             $PAGE->renderPage('changetag');
1065             exit;
1066         }
1067
1068         if (!$sessionManager->checkToken($_POST['token'])) {
1069             die(t('Wrong token.'));
1070         }
1071
1072         $alteredLinks = $LINKSDB->renameTag(escape($_POST['fromtag']), escape($_POST['totag']));
1073         $LINKSDB->save($conf->get('resource.page_cache'));
1074         foreach ($alteredLinks as $link) {
1075             $history->updateLink($link);
1076         }
1077         $delete = empty($_POST['totag']);
1078         $redirect = $delete ? 'do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
1079         $count = count($alteredLinks);
1080         $alert = $delete
1081             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d links.', $count), $count)
1082             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d links.', $count), $count);
1083         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
1084         exit;
1085     }
1086
1087     // -------- User wants to add a link without using the bookmarklet: Show form.
1088     if ($targetPage == Router::$PAGE_ADDLINK)
1089     {
1090         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
1091         $PAGE->renderPage('addlink');
1092         exit;
1093     }
1094
1095     // -------- User clicked the "Save" button when editing a link: Save link to database.
1096     if (isset($_POST['save_edit']))
1097     {
1098         // Go away!
1099         if (! $sessionManager->checkToken($_POST['token'])) {
1100             die(t('Wrong token.'));
1101         }
1102
1103         // lf_id should only be present if the link exists.
1104         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : $LINKSDB->getNextId();
1105         // Linkdate is kept here to:
1106         //   - use the same permalink for notes as they're displayed when creating them
1107         //   - let users hack creation date of their posts
1108         //     See: https://shaarli.readthedocs.io/en/master/Various-hacks/#changing-the-timestamp-for-a-shaare
1109         $linkdate = escape($_POST['lf_linkdate']);
1110         if (isset($LINKSDB[$id])) {
1111             // Edit
1112             $created = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $linkdate);
1113             $updated = new DateTime();
1114             $shortUrl = $LINKSDB[$id]['shorturl'];
1115             $new = false;
1116         } else {
1117             // New link
1118             $created = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $linkdate);
1119             $updated = null;
1120             $shortUrl = link_small_hash($created, $id);
1121             $new = true;
1122         }
1123
1124         // Remove multiple spaces.
1125         $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
1126         // Remove first '-' char in tags.
1127         $tags = preg_replace('/(^| )\-/', '$1', $tags);
1128         // Remove duplicates.
1129         $tags = implode(' ', array_unique(explode(' ', $tags)));
1130
1131         if (empty(trim($_POST['lf_url']))) {
1132             $_POST['lf_url'] = '?' . smallHash($linkdate . $id);
1133         }
1134         $url = whitelist_protocols(trim($_POST['lf_url']), $conf->get('security.allowed_protocols'));
1135
1136         $link = array(
1137             'id' => $id,
1138             'title' => trim($_POST['lf_title']),
1139             'url' => $url,
1140             'description' => $_POST['lf_description'],
1141             'private' => (isset($_POST['lf_private']) ? 1 : 0),
1142             'created' => $created,
1143             'updated' => $updated,
1144             'tags' => str_replace(',', ' ', $tags),
1145             'shorturl' => $shortUrl,
1146         );
1147
1148         // If title is empty, use the URL as title.
1149         if ($link['title'] == '') {
1150             $link['title'] = $link['url'];
1151         }
1152
1153         $pluginManager->executeHooks('save_link', $link);
1154
1155         $LINKSDB[$id] = $link;
1156         $LINKSDB->save($conf->get('resource.page_cache'));
1157         if ($new) {
1158             $history->addLink($link);
1159         } else {
1160             $history->updateLink($link);
1161         }
1162
1163         // If we are called from the bookmarklet, we must close the popup:
1164         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1165             echo '<script>self.close();</script>';
1166             exit;
1167         }
1168
1169         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1170         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1171         // Scroll to the link which has been edited.
1172         $location .= '#' . $link['shorturl'];
1173         // After saving the link, redirect to the page the user was on.
1174         header('Location: '. $location);
1175         exit;
1176     }
1177
1178     // -------- User clicked the "Cancel" button when editing a link.
1179     if (isset($_POST['cancel_edit']))
1180     {
1181         $id = isset($_POST['lf_id']) ? (int) escape($_POST['lf_id']) : false;
1182         if (! isset($LINKSDB[$id])) {
1183             header('Location: ?');
1184         }
1185         // If we are called from the bookmarklet, we must close the popup:
1186         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1187         $link = $LINKSDB[$id];
1188         $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
1189         // Scroll to the link which has been edited.
1190         $returnurl .= '#'. $link['shorturl'];
1191         $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1192         header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1193         exit;
1194     }
1195
1196     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1197     if ($targetPage == Router::$PAGE_DELETELINK)
1198     {
1199         if (! $sessionManager->checkToken($_GET['token'])) {
1200             die(t('Wrong token.'));
1201         }
1202
1203         $ids = trim($_GET['lf_linkdate']);
1204         if (strpos($ids, ' ') !== false) {
1205             // multiple, space-separated ids provided
1206             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
1207         } else {
1208             // only a single id provided
1209             $ids = [$ids];
1210         }
1211         // assert at least one id is given
1212         if(!count($ids)){
1213             die('no id provided');
1214         }
1215         foreach ($ids as $id) {
1216             $id = (int) escape($id);
1217             $link = $LINKSDB[$id];
1218             $pluginManager->executeHooks('delete_link', $link);
1219             unset($LINKSDB[$id]);
1220         }
1221         $LINKSDB->save($conf->get('resource.page_cache')); // save to disk
1222         $history->deleteLink($link);
1223
1224         // If we are called from the bookmarklet, we must close the popup:
1225         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1226
1227         $location = '?';
1228         if (isset($_SERVER['HTTP_REFERER'])) {
1229             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
1230             $location = generateLocation(
1231                     $_SERVER['HTTP_REFERER'],
1232                     $_SERVER['HTTP_HOST'],
1233                     ['delete_link', 'edit_link', $link['shorturl']]
1234             );
1235         }
1236
1237         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1238         exit;
1239     }
1240
1241     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1242     if (isset($_GET['edit_link']))
1243     {
1244         $id = (int) escape($_GET['edit_link']);
1245         $link = $LINKSDB[$id];  // Read database
1246         if (!$link) { header('Location: ?'); exit; } // Link not found in database.
1247         $link['linkdate'] = $link['created']->format(LinkDB::LINK_DATE_FORMAT);
1248         $data = array(
1249             'link' => $link,
1250             'link_is_new' => false,
1251             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1252             'tags' => $LINKSDB->linksCountPerTag(),
1253         );
1254         $pluginManager->executeHooks('render_editlink', $data);
1255
1256         foreach ($data as $key => $value) {
1257             $PAGE->assign($key, $value);
1258         }
1259
1260         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1261         $PAGE->renderPage('editlink');
1262         exit;
1263     }
1264
1265     // -------- User want to post a new link: Display link edit form.
1266     if (isset($_GET['post'])) {
1267         $url = cleanup_url($_GET['post']);
1268
1269         $link_is_new = false;
1270         // Check if URL is not already in database (in this case, we will edit the existing link)
1271         $link = $LINKSDB->getLinkFromUrl($url);
1272         if (! $link)
1273         {
1274             $link_is_new = true;
1275             $linkdate = strval(date(LinkDB::LINK_DATE_FORMAT));
1276             // Get title if it was provided in URL (by the bookmarklet).
1277             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1278             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1279             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1280             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1281             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1282             // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
1283             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1284                 // Short timeout to keep the application responsive
1285                 // The callback will fill $charset and $title with data from the downloaded page.
1286                 get_http_response(
1287                     $url,
1288                     $conf->get('general.download_timeout', 30),
1289                     $conf->get('general.download_max_size', 4194304),
1290                     get_curl_download_callback($charset, $title)
1291                 );
1292                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1293                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1294                 }
1295             }
1296
1297             if ($url == '') {
1298                 $url = '?' . smallHash($linkdate . $LINKSDB->getNextId());
1299                 $title = $conf->get('general.default_note_title', t('Note: '));
1300             }
1301             $url = escape($url);
1302             $title = escape($title);
1303
1304             $link = array(
1305                 'linkdate' => $linkdate,
1306                 'title' => $title,
1307                 'url' => $url,
1308                 'description' => $description,
1309                 'tags' => $tags,
1310                 'private' => $private,
1311             );
1312         } else {
1313             $link['linkdate'] = $link['created']->format(LinkDB::LINK_DATE_FORMAT);
1314         }
1315
1316         $data = array(
1317             'link' => $link,
1318             'link_is_new' => $link_is_new,
1319             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1320             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1321             'tags' => $LINKSDB->linksCountPerTag(),
1322             'default_private_links' => $conf->get('privacy.default_private_links', false),
1323         );
1324         $pluginManager->executeHooks('render_editlink', $data);
1325
1326         foreach ($data as $key => $value) {
1327             $PAGE->assign($key, $value);
1328         }
1329
1330         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1331         $PAGE->renderPage('editlink');
1332         exit;
1333     }
1334
1335     if ($targetPage == Router::$PAGE_EXPORT) {
1336         // Export links as a Netscape Bookmarks file
1337
1338         if (empty($_GET['selection'])) {
1339             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1340             $PAGE->renderPage('export');
1341             exit;
1342         }
1343
1344         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1345         $selection = $_GET['selection'];
1346         if (isset($_GET['prepend_note_url'])) {
1347             $prependNoteUrl = $_GET['prepend_note_url'];
1348         } else {
1349             $prependNoteUrl = false;
1350         }
1351
1352         try {
1353             $PAGE->assign(
1354                 'links',
1355                 NetscapeBookmarkUtils::filterAndFormat(
1356                     $LINKSDB,
1357                     $selection,
1358                     $prependNoteUrl,
1359                     index_url($_SERVER)
1360                 )
1361             );
1362         } catch (Exception $exc) {
1363             header('Content-Type: text/plain; charset=utf-8');
1364             echo $exc->getMessage();
1365             exit;
1366         }
1367         $now = new DateTime();
1368         header('Content-Type: text/html; charset=utf-8');
1369         header(
1370             'Content-disposition: attachment; filename=bookmarks_'
1371            .$selection.'_'.$now->format(LinkDB::LINK_DATE_FORMAT).'.html'
1372         );
1373         $PAGE->assign('date', $now->format(DateTime::RFC822));
1374         $PAGE->assign('eol', PHP_EOL);
1375         $PAGE->assign('selection', $selection);
1376         $PAGE->renderPage('export.bookmarks');
1377         exit;
1378     }
1379
1380     if ($targetPage == Router::$PAGE_IMPORT) {
1381         // Upload a Netscape bookmark dump to import its contents
1382
1383         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1384             // Show import dialog
1385             $PAGE->assign(
1386                 'maxfilesize',
1387                 get_max_upload_size(
1388                     ini_get('post_max_size'),
1389                     ini_get('upload_max_filesize'),
1390                     false
1391                 )
1392             );
1393             $PAGE->assign(
1394                 'maxfilesizeHuman',
1395                 get_max_upload_size(
1396                     ini_get('post_max_size'),
1397                     ini_get('upload_max_filesize'),
1398                     true
1399                 )
1400             );
1401             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1402             $PAGE->renderPage('import');
1403             exit;
1404         }
1405
1406         // Import bookmarks from an uploaded file
1407         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1408             // The file is too big or some form field may be missing.
1409             $msg = sprintf(
1410                 t(
1411                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1412                     .' (%s). Please upload in smaller chunks.'
1413                 ),
1414                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1415             );
1416             echo '<script>alert("'. $msg .'");document.location=\'?do='.Router::$PAGE_IMPORT .'\';</script>';
1417             exit;
1418         }
1419         if (! $sessionManager->checkToken($_POST['token'])) {
1420             die('Wrong token.');
1421         }
1422         $status = NetscapeBookmarkUtils::import(
1423             $_POST,
1424             $_FILES,
1425             $LINKSDB,
1426             $conf,
1427             $history
1428         );
1429         echo '<script>alert("'.$status.'");document.location=\'?do='
1430              .Router::$PAGE_IMPORT .'\';</script>';
1431         exit;
1432     }
1433
1434     // Plugin administration page
1435     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1436         $pluginMeta = $pluginManager->getPluginsMeta();
1437
1438         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1439         $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1440         // Load parameters.
1441         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1442         uasort(
1443             $enabledPlugins,
1444             function($a, $b) { return $a['order'] - $b['order']; }
1445         );
1446         $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1447
1448         $PAGE->assign('enabledPlugins', $enabledPlugins);
1449         $PAGE->assign('disabledPlugins', $disabledPlugins);
1450         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1451         $PAGE->renderPage('pluginsadmin');
1452         exit;
1453     }
1454
1455     // Plugin administration form action
1456     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1457         try {
1458             if (isset($_POST['parameters_form'])) {
1459                 unset($_POST['parameters_form']);
1460                 foreach ($_POST as $param => $value) {
1461                     $conf->set('plugins.'. $param, escape($value));
1462                 }
1463             }
1464             else {
1465                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1466             }
1467             $conf->write($loginManager->isLoggedIn());
1468             $history->updateSettings();
1469         }
1470         catch (Exception $e) {
1471             error_log(
1472                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1473                 $e->getMessage()
1474             );
1475
1476             // TODO: do not handle exceptions/errors in JS.
1477             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>';
1478             exit;
1479         }
1480         header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1481         exit;
1482     }
1483
1484     // Get a fresh token
1485     if ($targetPage == Router::$GET_TOKEN) {
1486         header('Content-Type:text/plain');
1487         echo $sessionManager->generateToken($conf);
1488         exit;
1489     }
1490
1491     // -------- Otherwise, simply display search form and links:
1492     showLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager);
1493     exit;
1494 }
1495
1496 /**
1497  * Template for the list of links (<div id="linklist">)
1498  * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1499  *
1500  * @param pageBuilder   $PAGE          pageBuilder instance.
1501  * @param LinkDB        $LINKSDB       LinkDB instance.
1502  * @param ConfigManager $conf          Configuration Manager instance.
1503  * @param PluginManager $pluginManager Plugin Manager instance.
1504  * @param LoginManager  $loginManager  LoginManager instance
1505  */
1506 function buildLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager)
1507 {
1508     // Used in templates
1509     if (isset($_GET['searchtags'])) {
1510         if (! empty($_GET['searchtags'])) {
1511             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1512         } else {
1513             $searchtags = false;
1514         }
1515     } else {
1516         $searchtags = '';
1517     }
1518     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1519
1520     // Smallhash filter
1521     if (! empty($_SERVER['QUERY_STRING'])
1522         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1523         try {
1524             $linksToDisplay = $LINKSDB->filterHash($_SERVER['QUERY_STRING']);
1525         } catch (LinkNotFoundException $e) {
1526             $PAGE->render404($e->getMessage());
1527             exit;
1528         }
1529     } else {
1530         // Filter links according search parameters.
1531         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
1532         $request = [
1533             'searchtags' => $searchtags,
1534             'searchterm' => $searchterm,
1535         ];
1536         $linksToDisplay = $LINKSDB->filterSearch($request, false, $visibility, !empty($_SESSION['untaggedonly']));
1537     }
1538
1539     // ---- Handle paging.
1540     $keys = array();
1541     foreach ($linksToDisplay as $key => $value) {
1542         $keys[] = $key;
1543     }
1544
1545     // Select articles according to paging.
1546     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1547     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1548     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1549     $page = $page < 1 ? 1 : $page;
1550     $page = $page > $pagecount ? $pagecount : $page;
1551     // Start index.
1552     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1553     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1554     $linkDisp = array();
1555     while ($i<$end && $i<count($keys))
1556     {
1557         $link = $linksToDisplay[$keys[$i]];
1558         $link['description'] = format_description(
1559             $link['description'],
1560             $conf->get('redirector.url'),
1561             $conf->get('redirector.encode_url')
1562         );
1563         $classLi =  ($i % 2) != 0 ? '' : 'publicLinkHightLight';
1564         $link['class'] = $link['private'] == 0 ? $classLi : 'private';
1565         $link['timestamp'] = $link['created']->getTimestamp();
1566         if (! empty($link['updated'])) {
1567             $link['updated_timestamp'] = $link['updated']->getTimestamp();
1568         } else {
1569             $link['updated_timestamp'] = '';
1570         }
1571         $taglist = preg_split('/\s+/', $link['tags'], -1, PREG_SPLIT_NO_EMPTY);
1572         uasort($taglist, 'strcasecmp');
1573         $link['taglist'] = $taglist;
1574         // Check for both signs of a note: starting with ? and 7 chars long.
1575         if ($link['url'][0] === '?' &&
1576             strlen($link['url']) === 7) {
1577             $link['url'] = index_url($_SERVER) . $link['url'];
1578         }
1579
1580         $linkDisp[$keys[$i]] = $link;
1581         $i++;
1582     }
1583
1584     // Compute paging navigation
1585     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1586     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1587     $previous_page_url = '';
1588     if ($i != count($keys)) {
1589         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1590     }
1591     $next_page_url='';
1592     if ($page>1) {
1593         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1594     }
1595
1596     // Fill all template fields.
1597     $data = array(
1598         'previous_page_url' => $previous_page_url,
1599         'next_page_url' => $next_page_url,
1600         'page_current' => $page,
1601         'page_max' => $pagecount,
1602         'result_count' => count($linksToDisplay),
1603         'search_term' => $searchterm,
1604         'search_tags' => $searchtags,
1605         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1606         'redirector' => $conf->get('redirector.url'),  // Optional redirector URL.
1607         'links' => $linkDisp,
1608     );
1609
1610     // If there is only a single link, we change on-the-fly the title of the page.
1611     if (count($linksToDisplay) == 1) {
1612         $data['pagetitle'] = $linksToDisplay[$keys[0]]['title'] .' - '. $conf->get('general.title');
1613     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1614         $data['pagetitle'] = t('Search: ');
1615         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1616         $bracketWrap = function ($tag) {
1617             return '['. $tag .']';
1618         };
1619         $data['pagetitle'] .= ! empty($searchtags)
1620             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1621             : '';
1622         $data['pagetitle'] .= '- '. $conf->get('general.title');
1623     }
1624
1625     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1626
1627     foreach ($data as $key => $value) {
1628         $PAGE->assign($key, $value);
1629     }
1630
1631     return;
1632 }
1633
1634 /**
1635  * Compute the thumbnail for a link.
1636  *
1637  * With a link to the original URL.
1638  * Understands various services (youtube.com...)
1639  * Input: $url = URL for which the thumbnail must be found.
1640  *        $href = if provided, this URL will be followed instead of $url
1641  * Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1642  * Some of them may be missing.
1643  * Return an empty array if no thumbnail available.
1644  *
1645  * @param ConfigManager $conf Configuration Manager instance.
1646  * @param string        $url
1647  * @param string|bool   $href
1648  *
1649  * @return array
1650  */
1651 function computeThumbnail($conf, $url, $href = false)
1652 {
1653     if (!$conf->get('thumbnail.enable_thumbnails')) return array();
1654     if ($href==false) $href=$url;
1655
1656     // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
1657     // (e.g. http://www.youtube.com/watch?v=spVypYk4kto --->  http://img.youtube.com/vi/spVypYk4kto/default.jpg )
1658     //                                     ^^^^^^^^^^^                                 ^^^^^^^^^^^
1659     $domain = parse_url($url,PHP_URL_HOST);
1660     if ($domain=='youtube.com' || $domain=='www.youtube.com')
1661     {
1662         parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1663         if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
1664                                                'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1665     }
1666     if ($domain=='youtu.be') // Youtube short links
1667     {
1668         $path = parse_url($url,PHP_URL_PATH);
1669         return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
1670                      'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1671     }
1672     if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
1673     {
1674         parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
1675         if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
1676                                                                     'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
1677     }
1678
1679     if ($domain=='imgur.com')
1680     {
1681         $path = parse_url($url,PHP_URL_PATH);
1682         if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1683         if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
1684                                                   'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1685         if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
1686                                                         'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1687
1688         if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
1689                                                      'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1690     }
1691     if ($domain=='i.imgur.com')
1692     {
1693         $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1694         if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
1695                                                   'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1696     }
1697     if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
1698     {
1699         if (strpos($url,'dailymotion.com/video/')!==false)
1700         {
1701             $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
1702             return array('src'=>$thumburl,
1703                          'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
1704         }
1705     }
1706     if (endsWith($domain,'.imageshack.us'))
1707     {
1708         $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1709         if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1710         {
1711             $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
1712             return array('src'=>$thumburl,
1713                          'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
1714         }
1715     }
1716
1717     // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1718     // So we deport the thumbnail generation in order not to slow down page generation
1719     // (and we also cache the thumbnail)
1720
1721     if (! $conf->get('thumbnail.enable_localcache')) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1722
1723     if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
1724         || $domain=='vimeo.com'
1725         || $domain=='ted.com' || endsWith($domain,'.ted.com')
1726         || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
1727     )
1728     {
1729         if ($domain=='vimeo.com')
1730         {   // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
1731             $path = parse_url($url,PHP_URL_PATH);
1732             if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
1733         }
1734         if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
1735         {   // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
1736             $path = parse_url($url,PHP_URL_PATH);
1737             if (!preg_match('!/\d+.+?!',$path)) return array();
1738         }
1739         if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
1740         {   // Make sure this TED URL points to a video (/talks/...)
1741             $path = parse_url($url,PHP_URL_PATH);
1742             if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
1743         }
1744         $sign = hash_hmac('sha256', $url, $conf->get('credentials.salt')); // We use the salt to sign data (it's random, secret, and specific to each installation)
1745         return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
1746                      'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
1747     }
1748
1749     // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
1750     // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
1751     // But using the extension will do.
1752     $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1753     if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1754     {
1755         $sign = hash_hmac('sha256', $url, $conf->get('credentials.salt')); // We use the salt to sign data (it's random, secret, and specific to each installation)
1756         return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
1757                      'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
1758     }
1759     return array(); // No thumbnail.
1760
1761 }
1762
1763
1764 // Returns the HTML code to display a thumbnail for a link
1765 // with a link to the original URL.
1766 // Understands various services (youtube.com...)
1767 // Input: $url = URL for which the thumbnail must be found.
1768 //        $href = if provided, this URL will be followed instead of $url
1769 // Returns '' if no thumbnail available.
1770 function thumbnail($url,$href=false)
1771 {
1772     // FIXME!
1773     global $conf;
1774     $t = computeThumbnail($conf, $url,$href);
1775     if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
1776
1777     $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
1778     if (!empty($t['width']))  $html.=' width="'.escape($t['width']).'"';
1779     if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1780     if (!empty($t['style']))  $html.=' style="'.escape($t['style']).'"';
1781     if (!empty($t['alt']))    $html.=' alt="'.escape($t['alt']).'"';
1782     $html.='></a>';
1783     return $html;
1784 }
1785
1786 // Returns the HTML code to display a thumbnail for a link
1787 // for the picture wall (using lazy image loading)
1788 // Understands various services (youtube.com...)
1789 // Input: $url = URL for which the thumbnail must be found.
1790 //        $href = if provided, this URL will be followed instead of $url
1791 // Returns '' if no thumbnail available.
1792 function lazyThumbnail($conf, $url,$href=false)
1793 {
1794     // FIXME!
1795     global $conf;
1796     $t = computeThumbnail($conf, $url,$href);
1797     if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
1798
1799     $html='<a href="'.escape($t['href']).'">';
1800
1801     // Lazy image
1802     $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
1803
1804     if (!empty($t['width']))  $html.=' width="'.escape($t['width']).'"';
1805     if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1806     if (!empty($t['style']))  $html.=' style="'.escape($t['style']).'"';
1807     if (!empty($t['alt']))    $html.=' alt="'.escape($t['alt']).'"';
1808     $html.='>';
1809
1810     // No-JavaScript fallback.
1811     $html.='<noscript><img src="'.escape($t['src']).'"';
1812     if (!empty($t['width']))  $html.=' width="'.escape($t['width']).'"';
1813     if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1814     if (!empty($t['style']))  $html.=' style="'.escape($t['style']).'"';
1815     if (!empty($t['alt']))    $html.=' alt="'.escape($t['alt']).'"';
1816     $html.='></noscript></a>';
1817
1818     return $html;
1819 }
1820
1821
1822 /**
1823  * Installation
1824  * This function should NEVER be called if the file data/config.php exists.
1825  *
1826  * @param ConfigManager  $conf           Configuration Manager instance.
1827  * @param SessionManager $sessionManager SessionManager instance
1828  */
1829 function install($conf, $sessionManager) {
1830     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1831     if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
1832
1833
1834     // This part makes sure sessions works correctly.
1835     // (Because on some hosts, session.save_path may not be set correctly,
1836     // or we may not have write access to it.)
1837     if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
1838     {
1839         // Step 2: Check if data in session is correct.
1840         $msg = t(
1841             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1842             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1843             'and that you have write access to it.<br>'.
1844             'It currently points to %s.<br>'.
1845             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1846             'or any custom hostname without a dot causes cookie storage to fail. '.
1847             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1848         );
1849         $msg = sprintf($msg, session_save_path());
1850         echo $msg;
1851         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1852         die;
1853     }
1854     if (!isset($_SESSION['session_tested']))
1855     {   // Step 1 : Try to store data in session and reload page.
1856         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1857         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1858     }
1859     if (isset($_GET['test_session']))
1860     {   // Step 3: Sessions are OK. Remove test parameter from URL.
1861         header('Location: '.index_url($_SERVER));
1862     }
1863
1864
1865     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
1866     {
1867         $tz = 'UTC';
1868         if (!empty($_POST['continent']) && !empty($_POST['city'])
1869             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1870         ) {
1871             $tz = $_POST['continent'].'/'.$_POST['city'];
1872         }
1873         $conf->set('general.timezone', $tz);
1874         $login = $_POST['setlogin'];
1875         $conf->set('credentials.login', $login);
1876         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1877         $conf->set('credentials.salt', $salt);
1878         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1879         if (!empty($_POST['title'])) {
1880             $conf->set('general.title', escape($_POST['title']));
1881         } else {
1882             $conf->set('general.title', 'Shared links on '.escape(index_url($_SERVER)));
1883         }
1884         $conf->set('translation.language', escape($_POST['language']));
1885         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1886         $conf->set('api.enabled', !empty($_POST['enableApi']));
1887         $conf->set(
1888             'api.secret',
1889             generate_api_secret(
1890                 $conf->get('credentials.login'),
1891                 $conf->get('credentials.salt')
1892             )
1893         );
1894         try {
1895             // Everything is ok, let's create config file.
1896             $conf->write($loginManager->isLoggedIn());
1897         }
1898         catch(Exception $e) {
1899             error_log(
1900                     'ERROR while writing config file after installation.' . PHP_EOL .
1901                     $e->getMessage()
1902                 );
1903
1904             // TODO: do not handle exceptions/errors in JS.
1905             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1906             exit;
1907         }
1908         echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
1909         exit;
1910     }
1911
1912     $PAGE = new PageBuilder($conf, null, $sessionManager->generateToken());
1913     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1914     $PAGE->assign('continents', $continents);
1915     $PAGE->assign('cities', $cities);
1916     $PAGE->assign('languages', Languages::getAvailableLanguages());
1917     $PAGE->renderPage('install');
1918     exit;
1919 }
1920
1921 /**
1922  * Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
1923  * I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
1924  * The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
1925  * This function is called by passing the URL:
1926  * http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
1927  * [URL] is the URL of the link (e.g. a flickr page)
1928  * [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
1929  * The function below will fetch the image from the webservice and store it in the cache.
1930  *
1931  * @param ConfigManager $conf Configuration Manager instance,
1932  */
1933 function genThumbnail($conf)
1934 {
1935     // Make sure the parameters in the URL were generated by us.
1936     $sign = hash_hmac('sha256', $_GET['url'], $conf->get('credentials.salt'));
1937     if ($sign!=$_GET['hmac']) die('Naughty boy!');
1938
1939     $cacheDir = $conf->get('resource.thumbnails_cache', 'cache');
1940     // Let's see if we don't already have the image for this URL in the cache.
1941     $thumbname=hash('sha1',$_GET['url']).'.jpg';
1942     if (is_file($cacheDir .'/'. $thumbname))
1943     {   // We have the thumbnail, just serve it:
1944         header('Content-Type: image/jpeg');
1945         echo file_get_contents($cacheDir .'/'. $thumbname);
1946         return;
1947     }
1948     // We may also serve a blank image (if service did not respond)
1949     $blankname=hash('sha1',$_GET['url']).'.gif';
1950     if (is_file($cacheDir .'/'. $blankname))
1951     {
1952         header('Content-Type: image/gif');
1953         echo file_get_contents($cacheDir .'/'. $blankname);
1954         return;
1955     }
1956
1957     // Otherwise, generate the thumbnail.
1958     $url = $_GET['url'];
1959     $domain = parse_url($url,PHP_URL_HOST);
1960
1961     if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
1962     {
1963         // Crude replacement to handle new flickr domain policy (They prefer www. now)
1964         $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
1965
1966         // Is this a link to an image, or to a flickr page ?
1967         $imageurl='';
1968         if (endsWith(parse_url($url, PHP_URL_PATH), '.jpg'))
1969         {  // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
1970             preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
1971             if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
1972         }
1973         else // This is a flickr page (html)
1974         {
1975             // Get the flickr html page.
1976             list($headers, $content) = get_http_response($url, 20);
1977             if (strpos($headers[0], '200 OK') !== false)
1978             {
1979                 // flickr now nicely provides the URL of the thumbnail in each flickr page.
1980                 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
1981                 if (!empty($matches[1])) $imageurl=$matches[1];
1982
1983                 // In albums (and some other pages), the link rel="image_src" is not provided,
1984                 // but flickr provides:
1985                 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
1986                 if ($imageurl=='')
1987                 {
1988                     preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
1989                     if (!empty($matches[1])) $imageurl=$matches[1];
1990                 }
1991             }
1992         }
1993
1994         if ($imageurl!='')
1995         {   // Let's download the image.
1996             // Image is 240x120, so 10 seconds to download should be enough.
1997             list($headers, $content) = get_http_response($imageurl, 10);
1998             if (strpos($headers[0], '200 OK') !== false) {
1999                 // Save image to cache.
2000                 file_put_contents($cacheDir .'/'. $thumbname, $content);
2001                 header('Content-Type: image/jpeg');
2002                 echo $content;
2003                 return;
2004             }
2005         }
2006     }
2007
2008     elseif ($domain=='vimeo.com' )
2009     {
2010         // This is more complex: we have to perform a HTTP request, then parse the result.
2011         // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
2012         $vid = substr(parse_url($url,PHP_URL_PATH),1);
2013         list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
2014         if (strpos($headers[0], '200 OK') !== false) {
2015             $t = unserialize($content);
2016             $imageurl = $t[0]['thumbnail_medium'];
2017             // Then we download the image and serve it to our client.
2018             list($headers, $content) = get_http_response($imageurl, 10);
2019             if (strpos($headers[0], '200 OK') !== false) {
2020                 // Save image to cache.
2021                 file_put_contents($cacheDir .'/'. $thumbname, $content);
2022                 header('Content-Type: image/jpeg');
2023                 echo $content;
2024                 return;
2025             }
2026         }
2027     }
2028
2029     elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2030     {
2031         // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2032         // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2033         // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
2034         list($headers, $content) = get_http_response($url, 5);
2035         if (strpos($headers[0], '200 OK') !== false) {
2036             // Extract the link to the thumbnail
2037             preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
2038             if (!empty($matches[1]))
2039             {   // Let's download the image.
2040                 $imageurl=$matches[1];
2041                 // No control on image size, so wait long enough
2042                 list($headers, $content) = get_http_response($imageurl, 20);
2043                 if (strpos($headers[0], '200 OK') !== false) {
2044                     $filepath = $cacheDir .'/'. $thumbname;
2045                     file_put_contents($filepath, $content); // Save image to cache.
2046                     if (resizeImage($filepath))
2047                     {
2048                         header('Content-Type: image/jpeg');
2049                         echo file_get_contents($filepath);
2050                         return;
2051                     }
2052                 }
2053             }
2054         }
2055     }
2056
2057     elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2058     {
2059         // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2060         // http://xkcd.com/327/
2061         // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2062         list($headers, $content) = get_http_response($url, 5);
2063         if (strpos($headers[0], '200 OK') !== false) {
2064             // Extract the link to the thumbnail
2065             preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
2066             if (!empty($matches[1]))
2067             {   // Let's download the image.
2068                 $imageurl=$matches[1];
2069                 // No control on image size, so wait long enough
2070                 list($headers, $content) = get_http_response($imageurl, 20);
2071                 if (strpos($headers[0], '200 OK') !== false) {
2072                     $filepath = $cacheDir.'/'.$thumbname;
2073                     // Save image to cache.
2074                     file_put_contents($filepath, $content);
2075                     if (resizeImage($filepath))
2076                     {
2077                         header('Content-Type: image/jpeg');
2078                         echo file_get_contents($filepath);
2079                         return;
2080                     }
2081                 }
2082             }
2083         }
2084     }
2085
2086     else
2087     {
2088         // For all other domains, we try to download the image and make a thumbnail.
2089         // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2090         list($headers, $content) = get_http_response($url, 30);
2091         if (strpos($headers[0], '200 OK') !== false) {
2092             $filepath = $cacheDir .'/'.$thumbname;
2093             // Save image to cache.
2094             file_put_contents($filepath, $content);
2095             if (resizeImage($filepath))
2096             {
2097                 header('Content-Type: image/jpeg');
2098                 echo file_get_contents($filepath);
2099                 return;
2100             }
2101         }
2102     }
2103
2104
2105     // Otherwise, return an empty image (8x8 transparent gif)
2106     $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2107     // Also put something in cache so that this URL is not requested twice.
2108     file_put_contents($cacheDir .'/'. $blankname, $blankgif);
2109     header('Content-Type: image/gif');
2110     echo $blankgif;
2111 }
2112
2113 // Make a thumbnail of the image (to width: 120 pixels)
2114 // Returns true if success, false otherwise.
2115 function resizeImage($filepath)
2116 {
2117     if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2118
2119     // Trick: some stupid people rename GIF as JPEG... or else.
2120     // So we really try to open each image type whatever the extension is.
2121     $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2122     $im=false;
2123     $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2124     $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2125     $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2126     if (!$im) return false;  // Unable to open image (corrupted or not an image)
2127     $w = imagesx($im);
2128     $h = imagesy($im);
2129     $ystart = 0; $yheight=$h;
2130     if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2131     $nw = 120;   // Desired width
2132     $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2133     // Resize image:
2134     $im2 = imagecreatetruecolor($nw,$nh);
2135     imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2136     imageinterlace($im2,true); // For progressive JPEG.
2137     $tempname=$filepath.'_TEMP.jpg';
2138     imagejpeg($im2, $tempname, 90);
2139     imagedestroy($im);
2140     imagedestroy($im2);
2141     unlink($filepath);
2142     rename($tempname,$filepath);  // Overwrite original picture with thumbnail.
2143     return true;
2144 }
2145
2146 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=genthumbnail')) { genThumbnail($conf); exit; }  // Thumbnail generation/cache does not need the link database.
2147 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) { showDailyRSS($conf); exit; }
2148 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
2149     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
2150 }
2151
2152 try {
2153     $history = new History($conf->get('resource.history'));
2154 } catch(Exception $e) {
2155     die($e->getMessage());
2156 }
2157
2158 $linkDb = new LinkDB(
2159     $conf->get('resource.datastore'),
2160     $loginManager->isLoggedIn(),
2161     $conf->get('privacy.hide_public_links'),
2162     $conf->get('redirector.url'),
2163     $conf->get('redirector.encode_url')
2164 );
2165
2166 $container = new \Slim\Container();
2167 $container['conf'] = $conf;
2168 $container['plugins'] = $pluginManager;
2169 $container['history'] = $history;
2170 $app = new \Slim\App($container);
2171
2172 // REST API routes
2173 $app->group('/api/v1', function() {
2174     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
2175     $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
2176     $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
2177     $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
2178     $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
2179     $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
2180     $this->get('/history', '\Shaarli\Api\Controllers\History:getHistory')->setName('getHistory');
2181 })->add('\Shaarli\Api\ApiMiddleware');
2182
2183 $response = $app->run(true);
2184 // Hack to make Slim and Shaarli router work together:
2185 // If a Slim route isn't found and NOT API call, we call renderPage().
2186 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
2187     // We use UTF-8 for proper international characters handling.
2188     header('Content-Type: text/html; charset=utf-8');
2189     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
2190 } else {
2191     $app->respond($response);
2192 }