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