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\LoginManager;
  82 use \Shaarli\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, $sessionManager);
 126
 127 // LC_MESSAGES isn't defined without php-intl, in this case use LC_COLLATE locale instead.
 128 if (! defined('LC_MESSAGES')) {
 129     define('LC_MESSAGES', LC_COLLATE);
 130 }
 131
 132 // Sniff browser language and set date format accordingly.
 133 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
 134     autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']);
 135 }
 136
 137 new Languages(setlocale(LC_MESSAGES, 0), $conf);
 138
 139 $conf->setEmpty('general.timezone', date_default_timezone_get());
 140 $conf->setEmpty('general.title', t('Shared links on '). escape(index_url($_SERVER)));
 141 RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl').'/'.$conf->get('resource.theme').'/'; // template directory
 142 RainTPL::$cache_dir = $conf->get('resource.raintpl_tmp'); // cache directory
 143
 144 $pluginManager = new PluginManager($conf);
 145 $pluginManager->load($conf->get('general.enabled_plugins'));
 146
 147 date_default_timezone_set($conf->get('general.timezone', 'UTC'));
 148
 149 ob_start();  // Output buffering for the page cache.
 150
 151 // Prevent caching on client side or proxy: (yes, it's ugly)
 152 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
 153 header("Cache-Control: no-store, no-cache, must-revalidate");
 154 header("Cache-Control: post-check=0, pre-check=0", false);
 155 header("Pragma: no-cache");
 156
 157 if (! is_file($conf->getConfigFileExt())) {
 158     // Ensure Shaarli has proper access to its resources
 159     $errors = ApplicationUtils::checkResourcePermissions($conf);
 160
 161     if ($errors != array()) {
 162         $message = '<p>'. t('Insufficient permissions:') .'</p><ul>';
 163
 164         foreach ($errors as $error) {
 165             $message .= '<li>'.$error.'</li>';
 166         }
 167         $message .= '</ul>';
 168
 169         header('Content-Type: text/html; charset=utf-8');
 170         echo $message;
 171         exit;
 172     }
 173
 174     // Display the installation form if no existing config is found
 175     install($conf, $sessionManager);
 176 }
 177
 178 // a token depending of deployment salt, user password, and the current ip
 179 define('STAY_SIGNED_IN_TOKEN', sha1($conf->get('credentials.hash') . $_SERVER['REMOTE_ADDR'] . $conf->get('credentials.salt')));
 180
 181 $loginManager->checkLoginState($_SERVER, $_SESSION, $_COOKIE, WEB_PATH, STAY_SIGNED_IN_TOKEN);
 182
 183 /**
 184  * Adapter function for PageBuilder
 185  *
 186  * TODO: update PageBuilder and tests
 187  */
 188 function isLoggedIn()
 189 {
 190     global $loginManager;
 191     return $loginManager->isLoggedIn();
 192 }
 193
 194
 195 // ------------------------------------------------------------------------------------------
 196 // Process login form: Check if login/password is correct.
 197 if (isset($_POST['login'])) {
 198     if (! $loginManager->canLogin($_SERVER)) {
 199         die(t('I said: NO. You are banned for the moment. Go away.'));
 200     }
 201     if (isset($_POST['password'])
 202         && $sessionManager->checkToken($_POST['token'])
 203         && $loginManager->checkCredentials($_SERVER, $_POST['login'], $_POST['password'])
 204     ) {
 205         // Login/password is OK.
 206         $loginManager->handleSuccessfulLogin($_SERVER);
 207
 208         // If user wants to keep the session cookie even after the browser closes:
 209         if (!empty($_POST['longlastingsession'])) {
 210             $_SESSION['longlastingsession'] = 31536000; // (31536000 seconds = 1 year)
 211             $expiration = time() + $_SESSION['longlastingsession']; // calculate relative cookie expiration (1 year from now)
 212             setcookie($sessionManager::$LOGGED_IN_COOKIE, STAY_SIGNED_IN_TOKEN, $expiration, WEB_PATH);
 213             $_SESSION['expires_on'] = $expiration;  // Set session expiration on server-side.
 214
 215             $cookiedir = '';
 216             if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 217                 $cookiedir = dirname($_SERVER["SCRIPT_NAME"]) . '/';
 218             }
 219             session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side
 220             // Note: Never forget the trailing slash on the cookie path!
 221             session_regenerate_id(true);  // Send cookie with new expiration date to browser.
 222         }
 223         else // Standard session expiration (=when browser closes)
 224         {
 225             $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/';
 226             session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes"
 227             session_regenerate_id(true);
 228         }
 229
 230         // Optional redirect after login:
 231         if (isset($_GET['post'])) {
 232             $uri = '?post='. urlencode($_GET['post']);
 233             foreach (array('description', 'source', 'title', 'tags') as $param) {
 234                 if (!empty($_GET[$param])) {
 235                     $uri .= '&'.$param.'='.urlencode($_GET[$param]);
 236                 }
 237             }
 238             header('Location: '. $uri);
 239             exit;
 240         }
 241
 242         if (isset($_GET['edit_link'])) {
 243             header('Location: ?edit_link='. escape($_GET['edit_link']));
 244             exit;
 245         }
 246
 247         if (isset($_POST['returnurl'])) {
 248             // Prevent loops over login screen.
 249             if (strpos($_POST['returnurl'], 'do=login') === false) {
 250                 header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST']));
 251                 exit;
 252             }
 253         }
 254         header('Location: ?'); exit;
 255     } else {
 256         $loginManager->handleFailedLogin($_SERVER);
 257         $redir = '&username='. urlencode($_POST['login']);
 258         if (isset($_GET['post'])) {
 259             $redir .= '&post=' . urlencode($_GET['post']);
 260             foreach (array('description', 'source', 'title', 'tags') as $param) {
 261                 if (!empty($_GET[$param])) {
 262                     $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
 263                 }
 264             }
 265         }
 266         // Redirect to login screen.
 267         echo '<script>alert("'. t("Wrong login/password.") .'");document.location=\'?do=login'.$redir.'\';</script>';
 268         exit;
 269     }
 270 }
 271
 272 // ------------------------------------------------------------------------------------------
 273 // Token management for XSRF protection
 274 // Token should be used in any form which acts on data (create,update,delete,import...).
 275 if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array();  // Token are attached to the session.
 276
 277 /**
 278  * Daily RSS feed: 1 RSS entry per day giving all the links on that day.
 279  * Gives the last 7 days (which have links).
 280  * This RSS feed cannot be filtered.
 281  *
 282  * @param ConfigManager $conf         Configuration Manager instance
 283  * @param LoginManager  $loginManager LoginManager instance
 284  */
 285 function showDailyRSS($conf, $loginManager) {
 286     // Cache system
 287     $query = $_SERVER['QUERY_STRING'];
 288     $cache = new CachedPage(
 289         $conf->get('config.PAGE_CACHE'),
 290         page_url($_SERVER),
 291         startsWith($query,'do=dailyrss') && !$loginManager->isLoggedIn()
 292     );
 293     $cached = $cache->cachedVersion();
 294     if (!empty($cached)) {
 295         echo $cached;
 296         exit;
 297     }
 298
 299     // If cached was not found (or not usable), then read the database and build the response:
 300     // Read links from database (and filter private links if used it not logged in).
 301     $LINKSDB = new LinkDB(
 302         $conf->get('resource.datastore'),
 303         $loginManager->isLoggedIn(),
 304         $conf->get('privacy.hide_public_links'),
 305         $conf->get('redirector.url'),
 306         $conf->get('redirector.encode_url')
 307     );
 308
 309     /* Some Shaarlies may have very few links, so we need to look
 310        back in time until we have enough days ($nb_of_days).
 311     */
 312     $nb_of_days = 7; // We take 7 days.
 313     $today = date('Ymd');
 314     $days = array();
 315
 316     foreach ($LINKSDB as $link) {
 317         $day = $link['created']->format('Ymd'); // Extract day (without time)
 318         if (strcmp($day, $today) < 0) {
 319             if (empty($days[$day])) {
 320                 $days[$day] = array();
 321             }
 322             $days[$day][] = $link;
 323         }
 324
 325         if (count($days) > $nb_of_days) {
 326             break; // Have we collected enough days?
 327         }
 328     }
 329
 330     // Build the RSS feed.
 331     header('Content-Type: application/rss+xml; charset=utf-8');
 332     $pageaddr = escape(index_url($_SERVER));
 333     echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
 334     echo '<channel>';
 335     echo '<title>Daily - '. $conf->get('general.title') . '</title>';
 336     echo '<link>'. $pageaddr .'</link>';
 337     echo '<description>Daily shared links</description>';
 338     echo '<language>en-en</language>';
 339     echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
 340
 341     // For each day.
 342     foreach ($days as $day => $links) {
 343         $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
 344         $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day);  // Absolute URL of the corresponding "Daily" page.
 345
 346         // We pre-format some fields for proper output.
 347         foreach ($links as &$link) {
 348             $link['formatedDescription'] = format_description(
 349                 $link['description'],
 350                 $conf->get('redirector.url'),
 351                 $conf->get('redirector.encode_url')
 352             );
 353             $link['thumbnail'] = thumbnail($conf, $link['url']);
 354             $link['timestamp'] = $link['created']->getTimestamp();
 355             if (startsWith($link['url'], '?')) {
 356                 $link['url'] = index_url($_SERVER) . $link['url'];  // make permalink URL absolute
 357             }
 358         }
 359
 360         // Then build the HTML for this day:
 361         $tpl = new RainTPL;
 362         $tpl->assign('title', $conf->get('general.title'));
 363         $tpl->assign('daydate', $dayDate->getTimestamp());
 364         $tpl->assign('absurl', $absurl);
 365         $tpl->assign('links', $links);
 366         $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
 367         $tpl->assign('hide_timestamps', $conf->get('privacy.hide_timestamps', false));
 368         $html = $tpl->draw('dailyrss', true);
 369
 370         echo $html . PHP_EOL;
 371     }
 372     echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
 373
 374     $cache->cache(ob_get_contents());
 375     ob_end_flush();
 376     exit;
 377 }
 378
 379 /**
 380  * Show the 'Daily' page.
 381  *
 382  * @param PageBuilder   $pageBuilder   Template engine wrapper.
 383  * @param LinkDB        $LINKSDB       LinkDB instance.
 384  * @param ConfigManager $conf          Configuration Manager instance.
 385  * @param PluginManager $pluginManager Plugin Manager instane.
 386  */
 387 function showDaily($pageBuilder, $LINKSDB, $conf, $pluginManager)
 388 {
 389     $day = date('Ymd', strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
 390     if (isset($_GET['day'])) {
 391       $day = $_GET['day'];
 392     }
 393
 394     $days = $LINKSDB->days();
 395     $i = array_search($day, $days);
 396     if ($i === false && count($days)) {
 397         // no links for day, but at least one day with links
 398         $i = count($days) - 1;
 399         $day = $days[$i];
 400     }
 401     $previousday = '';
 402     $nextday = '';
 403
 404     if ($i !== false) {
 405         if ($i >= 1) {
 406              $previousday=$days[$i - 1];
 407         }
 408         if ($i < count($days) - 1) {
 409           $nextday = $days[$i + 1];
 410         }
 411     }
 412     try {
 413         $linksToDisplay = $LINKSDB->filterDay($day);
 414     } catch (Exception $exc) {
 415         error_log($exc);
 416         $linksToDisplay = array();
 417     }
 418
 419     // We pre-format some fields for proper output.
 420     foreach($linksToDisplay as $key => $link) {
 421         $taglist = explode(' ',$link['tags']);
 422         uasort($taglist, 'strcasecmp');
 423         $linksToDisplay[$key]['taglist']=$taglist;
 424         $linksToDisplay[$key]['formatedDescription'] = format_description(
 425             $link['description'],
 426             $conf->get('redirector.url'),
 427             $conf->get('redirector.encode_url')
 428         );
 429         $linksToDisplay[$key]['thumbnail'] = thumbnail($conf, $link['url']);
 430         $linksToDisplay[$key]['timestamp'] =  $link['created']->getTimestamp();
 431     }
 432
 433     $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
 434     $data = array(
 435         'pagetitle' => $conf->get('general.title') .' - '. format_date($dayDate, false),
 436         'linksToDisplay' => $linksToDisplay,
 437         'day' => $dayDate->getTimestamp(),
 438         'dayDate' => $dayDate,
 439         'previousday' => $previousday,
 440         'nextday' => $nextday,
 441     );
 442
 443     /* Hook is called before column construction so that plugins don't have
 444        to deal with columns. */
 445     $pluginManager->executeHooks('render_daily', $data, array('loggedin' => $loginManager->isLoggedIn()));
 446
 447     /* We need to spread the articles on 3 columns.
 448        I did not want to use a JavaScript lib like http://masonry.desandro.com/
 449        so I manually spread entries with a simple method: I roughly evaluate the
 450        height of a div according to title and description length.
 451     */
 452     $columns = array(array(), array(), array()); // Entries to display, for each column.
 453     $fill = array(0, 0, 0);  // Rough estimate of columns fill.
 454     foreach($data['linksToDisplay'] as $key => $link) {
 455         // Roughly estimate length of entry (by counting characters)
 456         // Title: 30 chars = 1 line. 1 line is 30 pixels height.
 457         // Description: 836 characters gives roughly 342 pixel height.
 458         // This is not perfect, but it's usually OK.
 459         $length = strlen($link['title']) + (342 * strlen($link['description'])) / 836;
 460         if ($link['thumbnail']) {
 461           $length += 100; // 1 thumbnails roughly takes 100 pixels height.
 462         }
 463         // Then put in column which is the less filled:
 464         $smallest = min($fill); // find smallest value in array.
 465         $index = array_search($smallest, $fill); // find index of this smallest value.
 466         array_push($columns[$index], $link); // Put entry in this column.
 467         $fill[$index] += $length;
 468     }
 469
 470     $data['cols'] = $columns;
 471
 472     foreach ($data as $key => $value) {
 473         $pageBuilder->assign($key, $value);
 474     }
 475
 476     $pageBuilder->assign('pagetitle', t('Daily') .' - '. $conf->get('general.title', 'Shaarli'));
 477     $pageBuilder->renderPage('daily');
 478     exit;
 479 }
 480
 481 /**
 482  * Renders the linklist
 483  *
 484  * @param pageBuilder   $PAGE    pageBuilder instance.
 485  * @param LinkDB        $LINKSDB LinkDB instance.
 486  * @param ConfigManager $conf    Configuration Manager instance.
 487  * @param PluginManager $pluginManager Plugin Manager instance.
 488  */
 489 function showLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager) {
 490     buildLinkList($PAGE,$LINKSDB, $conf, $pluginManager, $loginManager);
 491     $PAGE->renderPage('linklist');
 492 }
 493
 494 /**
 495  * Render HTML page (according to URL parameters and user rights)
 496  *
 497  * @param ConfigManager  $conf           Configuration Manager instance.
 498  * @param PluginManager  $pluginManager  Plugin Manager instance,
 499  * @param LinkDB         $LINKSDB
 500  * @param History        $history        instance
 501  * @param SessionManager $sessionManager SessionManager instance
 502  * @param LoginManager   $loginManager   LoginManager instance
 503  */
 504 function renderPage($conf, $pluginManager, $LINKSDB, $history, $sessionManager, $loginManager)
 505 {
 506     $updater = new Updater(
 507         read_updates_file($conf->get('resource.updates')),
 508         $LINKSDB,
 509         $conf,
 510         $loginManager->isLoggedIn()
 511     );
 512     try {
 513         $newUpdates = $updater->update();
 514         if (! empty($newUpdates)) {
 515             write_updates_file(
 516                 $conf->get('resource.updates'),
 517                 $updater->getDoneUpdates()
 518             );
 519         }
 520     }
 521     catch(Exception $e) {
 522         die($e->getMessage());
 523     }
 524
 525     $PAGE = new PageBuilder($conf, $LINKSDB, $sessionManager->generateToken());
 526     $PAGE->assign('linkcount', count($LINKSDB));
 527     $PAGE->assign('privateLinkcount', count_private($LINKSDB));
 528     $PAGE->assign('plugin_errors', $pluginManager->getErrors());
 529
 530     // Determine which page will be rendered.
 531     $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
 532     $targetPage = Router::findPage($query, $_GET, $loginManager->isLoggedIn());
 533
 534     if (
 535         // if the user isn't logged in
 536         !$loginManager->isLoggedIn() &&
 537         // and Shaarli doesn't have public content...
 538         $conf->get('privacy.hide_public_links') &&
 539         // and is configured to enforce the login
 540         $conf->get('privacy.force_login') &&
 541         // and the current page isn't already the login page
 542         $targetPage !== Router::$PAGE_LOGIN &&
 543         // and the user is not requesting a feed (which would lead to a different content-type as expected)
 544         $targetPage !== Router::$PAGE_FEED_ATOM &&
 545         $targetPage !== Router::$PAGE_FEED_RSS
 546     ) {
 547         // force current page to be the login page
 548         $targetPage = Router::$PAGE_LOGIN;
 549     }
 550
 551     // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
 552     // Then assign generated data to RainTPL.
 553     $common_hooks = array(
 554         'includes',
 555         'header',
 556         'footer',
 557     );
 558
 559     foreach($common_hooks as $name) {
 560         $plugin_data = array();
 561         $pluginManager->executeHooks('render_' . $name, $plugin_data,
 562             array(
 563                 'target' => $targetPage,
 564                 'loggedin' => $loginManager->isLoggedIn()
 565             )
 566         );
 567         $PAGE->assign('plugins_' . $name, $plugin_data);
 568     }
 569
 570     // -------- Display login form.
 571     if ($targetPage == Router::$PAGE_LOGIN)
 572     {
 573         if ($conf->get('security.open_shaarli')) { header('Location: ?'); exit; }  // No need to login for open Shaarli
 574         if (isset($_GET['username'])) {
 575             $PAGE->assign('username', escape($_GET['username']));
 576         }
 577         $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
 578         // add default state of the 'remember me' checkbox
 579         $PAGE->assign('remember_user_default', $conf->get('privacy.remember_user_default'));
 580         $PAGE->assign('user_can_login', $loginManager->canLogin($_SERVER));
 581         $PAGE->assign('pagetitle', t('Login') .' - '. $conf->get('general.title', 'Shaarli'));
 582         $PAGE->renderPage('loginform');
 583         exit;
 584     }
 585     // -------- User wants to logout.
 586     if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout'))
 587     {
 588         invalidateCaches($conf->get('resource.page_cache'));
 589         $sessionManager->logout(WEB_PATH);
 590         header('Location: ?');
 591         exit;
 592     }
 593
 594     // -------- Picture wall
 595     if ($targetPage == Router::$PAGE_PICWALL)
 596     {
 597         // Optionally filter the results:
 598         $links = $LINKSDB->filterSearch($_GET);
 599         $linksToDisplay = array();
 600
 601         // Get only links which have a thumbnail.
 602         foreach($links as $link)
 603         {
 604             $permalink='?'.$link['shorturl'];
 605             $thumb=lazyThumbnail($conf, $link['url'],$permalink);
 606             if ($thumb!='') // Only output links which have a thumbnail.
 607             {
 608                 $link['thumbnail']=$thumb; // Thumbnail HTML code.
 609                 $linksToDisplay[]=$link; // Add to array.
 610             }
 611         }
 612
 613         $data = array(
 614             'linksToDisplay' => $linksToDisplay,
 615         );
 616         $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => $loginManager->isLoggedIn()));
 617
 618         foreach ($data as $key => $value) {
 619             $PAGE->assign($key, $value);
 620         }
 621
 622         $PAGE->assign('pagetitle', t('Picture wall') .' - '. $conf->get('general.title', 'Shaarli'));
 623         $PAGE->renderPage('picwall');
 624         exit;
 625     }
 626
 627     // -------- Tag cloud
 628     if ($targetPage == Router::$PAGE_TAGCLOUD)
 629     {
 630         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 631         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 632         $tags = $LINKSDB->linksCountPerTag($filteringTags, $visibility);
 633
 634         // We sort tags alphabetically, then choose a font size according to count.
 635         // First, find max value.
 636         $maxcount = 0;
 637         foreach ($tags as $value) {
 638             $maxcount = max($maxcount, $value);
 639         }
 640
 641         alphabetical_sort($tags, false, true);
 642
 643         $tagList = array();
 644         foreach($tags as $key => $value) {
 645             if (in_array($key, $filteringTags)) {
 646                 continue;
 647             }
 648             // Tag font size scaling:
 649             //   default 15 and 30 logarithm bases affect scaling,
 650             //   22 and 6 are arbitrary font sizes for max and min sizes.
 651             $size = log($value, 15) / log($maxcount, 30) * 2.2 + 0.8;
 652             $tagList[$key] = array(
 653                 'count' => $value,
 654                 'size' => number_format($size, 2, '.', ''),
 655             );
 656         }
 657
 658         $searchTags = implode(' ', escape($filteringTags));
 659         $data = array(
 660             'search_tags' => $searchTags,
 661             'tags' => $tagList,
 662         );
 663         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => $loginManager->isLoggedIn()));
 664
 665         foreach ($data as $key => $value) {
 666             $PAGE->assign($key, $value);
 667         }
 668
 669         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 670         $PAGE->assign('pagetitle', $searchTags. t('Tag cloud') .' - '. $conf->get('general.title', 'Shaarli'));
 671         $PAGE->renderPage('tag.cloud');
 672         exit;
 673     }
 674
 675     // -------- Tag list
 676     if ($targetPage == Router::$PAGE_TAGLIST)
 677     {
 678         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 679         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 680         $tags = $LINKSDB->linksCountPerTag($filteringTags, $visibility);
 681         foreach ($filteringTags as $tag) {
 682             if (array_key_exists($tag, $tags)) {
 683                 unset($tags[$tag]);
 684             }
 685         }
 686
 687         if (! empty($_GET['sort']) && $_GET['sort'] === 'alpha') {
 688             alphabetical_sort($tags, false, true);
 689         }
 690
 691         $searchTags = implode(' ', escape($filteringTags));
 692         $data = [
 693             'search_tags' => $searchTags,
 694             'tags' => $tags,
 695         ];
 696         $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => $loginManager->isLoggedIn()]);
 697
 698         foreach ($data as $key => $value) {
 699             $PAGE->assign($key, $value);
 700         }
 701
 702         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 703         $PAGE->assign('pagetitle', $searchTags . t('Tag list') .' - '. $conf->get('general.title', 'Shaarli'));
 704         $PAGE->renderPage('tag.list');
 705         exit;
 706     }
 707
 708     // Daily page.
 709     if ($targetPage == Router::$PAGE_DAILY) {
 710         showDaily($PAGE, $LINKSDB, $conf, $pluginManager);
 711     }
 712
 713     // ATOM and RSS feed.
 714     if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
 715         $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
 716         header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
 717
 718         // Cache system
 719         $query = $_SERVER['QUERY_STRING'];
 720         $cache = new CachedPage(
 721             $conf->get('resource.page_cache'),
 722             page_url($_SERVER),
 723             startsWith($query,'do='. $targetPage) && !$loginManager->isLoggedIn()
 724         );
 725         $cached = $cache->cachedVersion();
 726         if (!empty($cached)) {
 727             echo $cached;
 728             exit;
 729         }
 730
 731         // Generate data.
 732         $feedGenerator = new FeedBuilder($LINKSDB, $feedType, $_SERVER, $_GET, $loginManager->isLoggedIn());
 733         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 734         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 735         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 736         $data = $feedGenerator->buildData();
 737
 738         // Process plugin hook.
 739         $pluginManager->executeHooks('render_feed', $data, array(
 740             'loggedin' => $loginManager->isLoggedIn(),
 741             'target' => $targetPage,
 742         ));
 743
 744         // Render the template.
 745         $PAGE->assignAll($data);
 746         $PAGE->renderPage('feed.'. $feedType);
 747         $cache->cache(ob_get_contents());
 748         ob_end_flush();
 749         exit;
 750     }
 751
 752     // Display opensearch plugin (XML)
 753     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 754         header('Content-Type: application/xml; charset=utf-8');
 755         $PAGE->assign('serverurl', index_url($_SERVER));
 756         $PAGE->renderPage('opensearch');
 757         exit;
 758     }
 759
 760     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 761     if (isset($_GET['addtag']))
 762     {
 763         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
 764         if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
 765         parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
 766
 767         // Prevent redirection loop
 768         if (isset($params['addtag'])) {
 769             unset($params['addtag']);
 770         }
 771
 772         // Check if this tag is already in the search query and ignore it if it is.
 773         // Each tag is always separated by a space
 774         if (isset($params['searchtags'])) {
 775             $current_tags = explode(' ', $params['searchtags']);
 776         } else {
 777             $current_tags = array();
 778         }
 779         $addtag = true;
 780         foreach ($current_tags as $value) {
 781             if ($value === $_GET['addtag']) {
 782                 $addtag = false;
 783                 break;
 784             }
 785         }
 786         // Append the tag if necessary
 787         if (empty($params['searchtags'])) {
 788             $params['searchtags'] = trim($_GET['addtag']);
 789         }
 790         elseif ($addtag) {
 791             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
 792         }
 793
 794         unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
 795         header('Location: ?'.http_build_query($params));
 796         exit;
 797     }
 798
 799     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 800     if (isset($_GET['removetag'])) {
 801         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 802         if (empty($_SERVER['HTTP_REFERER'])) {
 803             header('Location: ?');
 804             exit;
 805         }
 806
 807         // In case browser does not send HTTP_REFERER
 808         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 809
 810         // Prevent redirection loop
 811         if (isset($params['removetag'])) {
 812             unset($params['removetag']);
 813         }
 814
 815         if (isset($params['searchtags'])) {
 816             $tags = explode(' ', $params['searchtags']);
 817             // Remove value from array $tags.
 818             $tags = array_diff($tags, array($_GET['removetag']));
 819             $params['searchtags'] = implode(' ',$tags);
 820
 821             if (empty($params['searchtags'])) {
 822                 unset($params['searchtags']);
 823             }
 824
 825             unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
 826         }
 827         header('Location: ?'.http_build_query($params));
 828         exit;
 829     }
 830
 831     // -------- User wants to change the number of links per page (linksperpage=...)
 832     if (isset($_GET['linksperpage'])) {
 833         if (is_numeric($_GET['linksperpage'])) {
 834             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 835         }
 836
 837         if (! empty($_SERVER['HTTP_REFERER'])) {
 838             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 839         } else {
 840             $location = '?';
 841         }
 842         header('Location: '. $location);
 843         exit;
 844     }
 845
 846     // -------- User wants to see only private links (toggle)
 847     if (isset($_GET['visibility'])) {
 848         if ($_GET['visibility'] === 'private') {
 849             // Visibility not set or not already private, set private, otherwise reset it
 850             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 851                 // See only private links
 852                 $_SESSION['visibility'] = 'private';
 853             } else {
 854                 unset($_SESSION['visibility']);
 855             }
 856         } elseif ($_GET['visibility'] === 'public') {
 857             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 858                 // See only public links
 859                 $_SESSION['visibility'] = 'public';
 860             } else {
 861                 unset($_SESSION['visibility']);
 862             }
 863         }
 864
 865         if (! empty($_SERVER['HTTP_REFERER'])) {
 866             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 867         } else {
 868             $location = '?';
 869         }
 870         header('Location: '. $location);
 871         exit;
 872     }
 873
 874     // -------- User wants to see only untagged links (toggle)
 875     if (isset($_GET['untaggedonly'])) {
 876         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 877
 878         if (! empty($_SERVER['HTTP_REFERER'])) {
 879             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 880         } else {
 881             $location = '?';
 882         }
 883         header('Location: '. $location);
 884         exit;
 885     }
 886
 887     // -------- Handle other actions allowed for non-logged in users:
 888     if (!$loginManager->isLoggedIn())
 889     {
 890         // User tries to post new link but is not logged in:
 891         // Show login screen, then redirect to ?post=...
 892         if (isset($_GET['post']))
 893         {
 894             header( // Redirect to login page, then back to post link.
 895                 'Location: ?do=login&post='.urlencode($_GET['post']).
 896                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 897                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 898                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 899                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 900             );
 901             exit;
 902         }
 903
 904         showLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager);
 905         if (isset($_GET['edit_link'])) {
 906             header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
 907             exit;
 908         }
 909
 910         exit; // Never remove this one! All operations below are reserved for logged in user.
 911     }
 912
 913     // -------- All other functions are reserved for the registered user:
 914
 915     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 916     if ($targetPage == Router::$PAGE_TOOLS)
 917     {
 918         $data = [
 919             'pageabsaddr' => index_url($_SERVER),
 920             'sslenabled' => is_https($_SERVER),
 921         ];
 922         $pluginManager->executeHooks('render_tools', $data);
 923
 924         foreach ($data as $key => $value) {
 925             $PAGE->assign($key, $value);
 926         }
 927
 928         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 929         $PAGE->renderPage('tools');
 930         exit;
 931     }
 932
 933     // -------- User wants to change his/her password.
 934     if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
 935     {
 936         if ($conf->get('security.open_shaarli')) {
 937             die(t('You are not supposed to change a password on an Open Shaarli.'));
 938         }
 939
 940         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
 941         {
 942             if (!$sessionManager->checkToken($_POST['token'])) die(t('Wrong token.')); // Go away!
 943
 944             // Make sure old password is correct.
 945             $oldhash = sha1($_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt'));
 946             if ($oldhash!= $conf->get('credentials.hash')) {
 947                 echo '<script>alert("'. t('The old password is not correct.') .'");document.location=\'?do=changepasswd\';</script>';
 948                 exit;
 949             }
 950             // Save new password
 951             // Salt renders rainbow-tables attacks useless.
 952             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 953             $conf->set('credentials.hash', sha1($_POST['setpassword'] . $conf->get('credentials.login') . $conf->get('credentials.salt')));
 954             try {
 955                 $conf->write($loginManager->isLoggedIn());
 956             }
 957             catch(Exception $e) {
 958                 error_log(
 959                     'ERROR while writing config file after changing password.' . PHP_EOL .
 960                     $e->getMessage()
 961                 );
 962
 963                 // TODO: do not handle exceptions/errors in JS.
 964                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
 965                 exit;
 966             }
 967             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'?do=tools\';</script>';
 968             exit;
 969         }
 970         else // show the change password form.
 971         {
 972             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
 973             $PAGE->renderPage('changepassword');
 974             exit;
 975         }
 976     }
 977
 978     // -------- User wants to change configuration
 979     if ($targetPage == Router::$PAGE_CONFIGURE)
 980     {
 981         if (!empty($_POST['title']) )
 982         {
 983             if (!$sessionManager->checkToken($_POST['token'])) {
 984                 die(t('Wrong token.')); // Go away!
 985             }
 986             $tz = 'UTC';
 987             if (!empty($_POST['continent']) && !empty($_POST['city'])
 988                 && isTimeZoneValid($_POST['continent'], $_POST['city'])
 989             ) {
 990                 $tz = $_POST['continent'] . '/' . $_POST['city'];
 991             }
 992             $conf->set('general.timezone', $tz);
 993             $conf->set('general.title', escape($_POST['title']));
 994             $conf->set('general.header_link', escape($_POST['titleLink']));
 995             $conf->set('resource.theme', escape($_POST['theme']));
 996             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
 997             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
 998             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
 999             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1000             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
1001             $conf->set('api.enabled', !empty($_POST['enableApi']));
1002             $conf->set('api.secret', escape($_POST['apiSecret']));
1003             $conf->set('translation.language', escape($_POST['language']));
1004
1005             try {
1006                 $conf->write($loginManager->isLoggedIn());
1007                 $history->updateSettings();
1008                 invalidateCaches($conf->get('resource.page_cache'));
1009             }
1010             catch(Exception $e) {
1011                 error_log(
1012                     'ERROR while writing config file after configuration update.' . PHP_EOL .
1013                     $e->getMessage()
1014                 );
1015
1016                 // TODO: do not handle exceptions/errors in JS.
1017                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=configure\';</script>';
1018                 exit;
1019             }
1020             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'?do=configure\';</script>';
1021             exit;
1022         }
1023         else // Show the configuration form.
1024         {
1025             $PAGE->assign('title', $conf->get('general.title'));
1026             $PAGE->assign('theme', $conf->get('resource.theme'));
1027             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
1028             list($continents, $cities) = generateTimeZoneData(
1029                 timezone_identifiers_list(),
1030                 $conf->get('general.timezone')
1031             );
1032             $PAGE->assign('continents', $continents);
1033             $PAGE->assign('cities', $cities);
1034             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
1035             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
1036             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
1037             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
1038             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
1039             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
1040             $PAGE->assign('api_secret', $conf->get('api.secret'));
1041             $PAGE->assign('languages', Languages::getAvailableLanguages());
1042             $PAGE->assign('language', $conf->get('translation.language'));
1043             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
1044             $PAGE->renderPage('configure');
1045             exit;
1046         }
1047     }
1048
1049     // -------- User wants to rename a tag or delete it
1050     if ($targetPage == Router::$PAGE_CHANGETAG)
1051     {
1052         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1053             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
1054             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
1055             $PAGE->renderPage('changetag');
1056             exit;
1057         }
1058
1059         if (!$sessionManager->checkToken($_POST['token'])) {
1060             die(t('Wrong token.'));
1061         }
1062
1063         $alteredLinks = $LINKSDB->renameTag(escape($_POST['fromtag']), escape($_POST['totag']));
1064         $LINKSDB->save($conf->get('resource.page_cache'));
1065         foreach ($alteredLinks as $link) {
1066             $history->updateLink($link);
1067         }
1068         $delete = empty($_POST['totag']);
1069         $redirect = $delete ? 'do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
1070         $count = count($alteredLinks);
1071         $alert = $delete
1072             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d links.', $count), $count)
1073             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d links.', $count), $count);
1074         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
1075         exit;
1076     }
1077
1078     // -------- User wants to add a link without using the bookmarklet: Show form.
1079     if ($targetPage == Router::$PAGE_ADDLINK)
1080     {
1081         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
1082         $PAGE->renderPage('addlink');
1083         exit;
1084     }
1085
1086     // -------- User clicked the "Save" button when editing a link: Save link to database.
1087     if (isset($_POST['save_edit']))
1088     {
1089         // Go away!
1090         if (! $sessionManager->checkToken($_POST['token'])) {
1091             die(t('Wrong token.'));
1092         }
1093
1094         // lf_id should only be present if the link exists.
1095         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : $LINKSDB->getNextId();
1096         // Linkdate is kept here to:
1097         //   - use the same permalink for notes as they're displayed when creating them
1098         //   - let users hack creation date of their posts
1099         //     See: https://shaarli.readthedocs.io/en/master/Various-hacks/#changing-the-timestamp-for-a-shaare
1100         $linkdate = escape($_POST['lf_linkdate']);
1101         if (isset($LINKSDB[$id])) {
1102             // Edit
1103             $created = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $linkdate);
1104             $updated = new DateTime();
1105             $shortUrl = $LINKSDB[$id]['shorturl'];
1106             $new = false;
1107         } else {
1108             // New link
1109             $created = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $linkdate);
1110             $updated = null;
1111             $shortUrl = link_small_hash($created, $id);
1112             $new = true;
1113         }
1114
1115         // Remove multiple spaces.
1116         $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
1117         // Remove first '-' char in tags.
1118         $tags = preg_replace('/(^| )\-/', '$1', $tags);
1119         // Remove duplicates.
1120         $tags = implode(' ', array_unique(explode(' ', $tags)));
1121
1122         if (empty(trim($_POST['lf_url']))) {
1123             $_POST['lf_url'] = '?' . smallHash($linkdate . $id);
1124         }
1125         $url = whitelist_protocols(trim($_POST['lf_url']), $conf->get('security.allowed_protocols'));
1126
1127         $link = array(
1128             'id' => $id,
1129             'title' => trim($_POST['lf_title']),
1130             'url' => $url,
1131             'description' => $_POST['lf_description'],
1132             'private' => (isset($_POST['lf_private']) ? 1 : 0),
1133             'created' => $created,
1134             'updated' => $updated,
1135             'tags' => str_replace(',', ' ', $tags),
1136             'shorturl' => $shortUrl,
1137         );
1138
1139         // If title is empty, use the URL as title.
1140         if ($link['title'] == '') {
1141             $link['title'] = $link['url'];
1142         }
1143
1144         $pluginManager->executeHooks('save_link', $link);
1145
1146         $LINKSDB[$id] = $link;
1147         $LINKSDB->save($conf->get('resource.page_cache'));
1148         if ($new) {
1149             $history->addLink($link);
1150         } else {
1151             $history->updateLink($link);
1152         }
1153
1154         // If we are called from the bookmarklet, we must close the popup:
1155         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1156             echo '<script>self.close();</script>';
1157             exit;
1158         }
1159
1160         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1161         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1162         // Scroll to the link which has been edited.
1163         $location .= '#' . $link['shorturl'];
1164         // After saving the link, redirect to the page the user was on.
1165         header('Location: '. $location);
1166         exit;
1167     }
1168
1169     // -------- User clicked the "Cancel" button when editing a link.
1170     if (isset($_POST['cancel_edit']))
1171     {
1172         $id = isset($_POST['lf_id']) ? (int) escape($_POST['lf_id']) : false;
1173         if (! isset($LINKSDB[$id])) {
1174             header('Location: ?');
1175         }
1176         // If we are called from the bookmarklet, we must close the popup:
1177         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1178         $link = $LINKSDB[$id];
1179         $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
1180         // Scroll to the link which has been edited.
1181         $returnurl .= '#'. $link['shorturl'];
1182         $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1183         header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1184         exit;
1185     }
1186
1187     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1188     if ($targetPage == Router::$PAGE_DELETELINK)
1189     {
1190         if (! $sessionManager->checkToken($_GET['token'])) {
1191             die(t('Wrong token.'));
1192         }
1193
1194         $ids = trim($_GET['lf_linkdate']);
1195         if (strpos($ids, ' ') !== false) {
1196             // multiple, space-separated ids provided
1197             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
1198         } else {
1199             // only a single id provided
1200             $ids = [$ids];
1201         }
1202         // assert at least one id is given
1203         if(!count($ids)){
1204             die('no id provided');
1205         }
1206         foreach ($ids as $id) {
1207             $id = (int) escape($id);
1208             $link = $LINKSDB[$id];
1209             $pluginManager->executeHooks('delete_link', $link);
1210             unset($LINKSDB[$id]);
1211         }
1212         $LINKSDB->save($conf->get('resource.page_cache')); // save to disk
1213         $history->deleteLink($link);
1214
1215         // If we are called from the bookmarklet, we must close the popup:
1216         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1217
1218         $location = '?';
1219         if (isset($_SERVER['HTTP_REFERER'])) {
1220             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
1221             $location = generateLocation(
1222                     $_SERVER['HTTP_REFERER'],
1223                     $_SERVER['HTTP_HOST'],
1224                     ['delete_link', 'edit_link', $link['shorturl']]
1225             );
1226         }
1227
1228         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1229         exit;
1230     }
1231
1232     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1233     if (isset($_GET['edit_link']))
1234     {
1235         $id = (int) escape($_GET['edit_link']);
1236         $link = $LINKSDB[$id];  // Read database
1237         if (!$link) { header('Location: ?'); exit; } // Link not found in database.
1238         $link['linkdate'] = $link['created']->format(LinkDB::LINK_DATE_FORMAT);
1239         $data = array(
1240             'link' => $link,
1241             'link_is_new' => false,
1242             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1243             'tags' => $LINKSDB->linksCountPerTag(),
1244         );
1245         $pluginManager->executeHooks('render_editlink', $data);
1246
1247         foreach ($data as $key => $value) {
1248             $PAGE->assign($key, $value);
1249         }
1250
1251         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1252         $PAGE->renderPage('editlink');
1253         exit;
1254     }
1255
1256     // -------- User want to post a new link: Display link edit form.
1257     if (isset($_GET['post'])) {
1258         $url = cleanup_url($_GET['post']);
1259
1260         $link_is_new = false;
1261         // Check if URL is not already in database (in this case, we will edit the existing link)
1262         $link = $LINKSDB->getLinkFromUrl($url);
1263         if (! $link)
1264         {
1265             $link_is_new = true;
1266             $linkdate = strval(date(LinkDB::LINK_DATE_FORMAT));
1267             // Get title if it was provided in URL (by the bookmarklet).
1268             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1269             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1270             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1271             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1272             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1273             // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
1274             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1275                 // Short timeout to keep the application responsive
1276                 // The callback will fill $charset and $title with data from the downloaded page.
1277                 get_http_response(
1278                     $url,
1279                     $conf->get('general.download_timeout', 30),
1280                     $conf->get('general.download_max_size', 4194304),
1281                     get_curl_download_callback($charset, $title)
1282                 );
1283                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1284                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1285                 }
1286             }
1287
1288             if ($url == '') {
1289                 $url = '?' . smallHash($linkdate . $LINKSDB->getNextId());
1290                 $title = $conf->get('general.default_note_title', t('Note: '));
1291             }
1292             $url = escape($url);
1293             $title = escape($title);
1294
1295             $link = array(
1296                 'linkdate' => $linkdate,
1297                 'title' => $title,
1298                 'url' => $url,
1299                 'description' => $description,
1300                 'tags' => $tags,
1301                 'private' => $private,
1302             );
1303         } else {
1304             $link['linkdate'] = $link['created']->format(LinkDB::LINK_DATE_FORMAT);
1305         }
1306
1307         $data = array(
1308             'link' => $link,
1309             'link_is_new' => $link_is_new,
1310             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1311             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1312             'tags' => $LINKSDB->linksCountPerTag(),
1313             'default_private_links' => $conf->get('privacy.default_private_links', false),
1314         );
1315         $pluginManager->executeHooks('render_editlink', $data);
1316
1317         foreach ($data as $key => $value) {
1318             $PAGE->assign($key, $value);
1319         }
1320
1321         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1322         $PAGE->renderPage('editlink');
1323         exit;
1324     }
1325
1326     if ($targetPage == Router::$PAGE_EXPORT) {
1327         // Export links as a Netscape Bookmarks file
1328
1329         if (empty($_GET['selection'])) {
1330             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1331             $PAGE->renderPage('export');
1332             exit;
1333         }
1334
1335         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1336         $selection = $_GET['selection'];
1337         if (isset($_GET['prepend_note_url'])) {
1338             $prependNoteUrl = $_GET['prepend_note_url'];
1339         } else {
1340             $prependNoteUrl = false;
1341         }
1342
1343         try {
1344             $PAGE->assign(
1345                 'links',
1346                 NetscapeBookmarkUtils::filterAndFormat(
1347                     $LINKSDB,
1348                     $selection,
1349                     $prependNoteUrl,
1350                     index_url($_SERVER)
1351                 )
1352             );
1353         } catch (Exception $exc) {
1354             header('Content-Type: text/plain; charset=utf-8');
1355             echo $exc->getMessage();
1356             exit;
1357         }
1358         $now = new DateTime();
1359         header('Content-Type: text/html; charset=utf-8');
1360         header(
1361             'Content-disposition: attachment; filename=bookmarks_'
1362            .$selection.'_'.$now->format(LinkDB::LINK_DATE_FORMAT).'.html'
1363         );
1364         $PAGE->assign('date', $now->format(DateTime::RFC822));
1365         $PAGE->assign('eol', PHP_EOL);
1366         $PAGE->assign('selection', $selection);
1367         $PAGE->renderPage('export.bookmarks');
1368         exit;
1369     }
1370
1371     if ($targetPage == Router::$PAGE_IMPORT) {
1372         // Upload a Netscape bookmark dump to import its contents
1373
1374         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1375             // Show import dialog
1376             $PAGE->assign(
1377                 'maxfilesize',
1378                 get_max_upload_size(
1379                     ini_get('post_max_size'),
1380                     ini_get('upload_max_filesize'),
1381                     false
1382                 )
1383             );
1384             $PAGE->assign(
1385                 'maxfilesizeHuman',
1386                 get_max_upload_size(
1387                     ini_get('post_max_size'),
1388                     ini_get('upload_max_filesize'),
1389                     true
1390                 )
1391             );
1392             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1393             $PAGE->renderPage('import');
1394             exit;
1395         }
1396
1397         // Import bookmarks from an uploaded file
1398         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1399             // The file is too big or some form field may be missing.
1400             $msg = sprintf(
1401                 t(
1402                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1403                     .' (%s). Please upload in smaller chunks.'
1404                 ),
1405                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1406             );
1407             echo '<script>alert("'. $msg .'");document.location=\'?do='.Router::$PAGE_IMPORT .'\';</script>';
1408             exit;
1409         }
1410         if (! $sessionManager->checkToken($_POST['token'])) {
1411             die('Wrong token.');
1412         }
1413         $status = NetscapeBookmarkUtils::import(
1414             $_POST,
1415             $_FILES,
1416             $LINKSDB,
1417             $conf,
1418             $history
1419         );
1420         echo '<script>alert("'.$status.'");document.location=\'?do='
1421              .Router::$PAGE_IMPORT .'\';</script>';
1422         exit;
1423     }
1424
1425     // Plugin administration page
1426     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1427         $pluginMeta = $pluginManager->getPluginsMeta();
1428
1429         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1430         $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1431         // Load parameters.
1432         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1433         uasort(
1434             $enabledPlugins,
1435             function($a, $b) { return $a['order'] - $b['order']; }
1436         );
1437         $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1438
1439         $PAGE->assign('enabledPlugins', $enabledPlugins);
1440         $PAGE->assign('disabledPlugins', $disabledPlugins);
1441         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1442         $PAGE->renderPage('pluginsadmin');
1443         exit;
1444     }
1445
1446     // Plugin administration form action
1447     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1448         try {
1449             if (isset($_POST['parameters_form'])) {
1450                 unset($_POST['parameters_form']);
1451                 foreach ($_POST as $param => $value) {
1452                     $conf->set('plugins.'. $param, escape($value));
1453                 }
1454             }
1455             else {
1456                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1457             }
1458             $conf->write($loginManager->isLoggedIn());
1459             $history->updateSettings();
1460         }
1461         catch (Exception $e) {
1462             error_log(
1463                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1464                 $e->getMessage()
1465             );
1466
1467             // TODO: do not handle exceptions/errors in JS.
1468             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>';
1469             exit;
1470         }
1471         header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1472         exit;
1473     }
1474
1475     // Get a fresh token
1476     if ($targetPage == Router::$GET_TOKEN) {
1477         header('Content-Type:text/plain');
1478         echo $sessionManager->generateToken($conf);
1479         exit;
1480     }
1481
1482     // -------- Otherwise, simply display search form and links:
1483     showLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager);
1484     exit;
1485 }
1486
1487 /**
1488  * Template for the list of links (<div id="linklist">)
1489  * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1490  *
1491  * @param pageBuilder   $PAGE          pageBuilder instance.
1492  * @param LinkDB        $LINKSDB       LinkDB instance.
1493  * @param ConfigManager $conf          Configuration Manager instance.
1494  * @param PluginManager $pluginManager Plugin Manager instance.
1495  * @param LoginManager  $loginManager  LoginManager instance
1496  */
1497 function buildLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager)
1498 {
1499     // Used in templates
1500     if (isset($_GET['searchtags'])) {
1501         if (! empty($_GET['searchtags'])) {
1502             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1503         } else {
1504             $searchtags = false;
1505         }
1506     } else {
1507         $searchtags = '';
1508     }
1509     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1510
1511     // Smallhash filter
1512     if (! empty($_SERVER['QUERY_STRING'])
1513         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1514         try {
1515             $linksToDisplay = $LINKSDB->filterHash($_SERVER['QUERY_STRING']);
1516         } catch (LinkNotFoundException $e) {
1517             $PAGE->render404($e->getMessage());
1518             exit;
1519         }
1520     } else {
1521         // Filter links according search parameters.
1522         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
1523         $request = [
1524             'searchtags' => $searchtags,
1525             'searchterm' => $searchterm,
1526         ];
1527         $linksToDisplay = $LINKSDB->filterSearch($request, false, $visibility, !empty($_SESSION['untaggedonly']));
1528     }
1529
1530     // ---- Handle paging.
1531     $keys = array();
1532     foreach ($linksToDisplay as $key => $value) {
1533         $keys[] = $key;
1534     }
1535
1536     // Select articles according to paging.
1537     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1538     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1539     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1540     $page = $page < 1 ? 1 : $page;
1541     $page = $page > $pagecount ? $pagecount : $page;
1542     // Start index.
1543     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1544     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1545     $linkDisp = array();
1546     while ($i<$end && $i<count($keys))
1547     {
1548         $link = $linksToDisplay[$keys[$i]];
1549         $link['description'] = format_description(
1550             $link['description'],
1551             $conf->get('redirector.url'),
1552             $conf->get('redirector.encode_url')
1553         );
1554         $classLi =  ($i % 2) != 0 ? '' : 'publicLinkHightLight';
1555         $link['class'] = $link['private'] == 0 ? $classLi : 'private';
1556         $link['timestamp'] = $link['created']->getTimestamp();
1557         if (! empty($link['updated'])) {
1558             $link['updated_timestamp'] = $link['updated']->getTimestamp();
1559         } else {
1560             $link['updated_timestamp'] = '';
1561         }
1562         $taglist = preg_split('/\s+/', $link['tags'], -1, PREG_SPLIT_NO_EMPTY);
1563         uasort($taglist, 'strcasecmp');
1564         $link['taglist'] = $taglist;
1565         // Check for both signs of a note: starting with ? and 7 chars long.
1566         if ($link['url'][0] === '?' &&
1567             strlen($link['url']) === 7) {
1568             $link['url'] = index_url($_SERVER) . $link['url'];
1569         }
1570
1571         $linkDisp[$keys[$i]] = $link;
1572         $i++;
1573     }
1574
1575     // Compute paging navigation
1576     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1577     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1578     $previous_page_url = '';
1579     if ($i != count($keys)) {
1580         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1581     }
1582     $next_page_url='';
1583     if ($page>1) {
1584         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1585     }
1586
1587     // Fill all template fields.
1588     $data = array(
1589         'previous_page_url' => $previous_page_url,
1590         'next_page_url' => $next_page_url,
1591         'page_current' => $page,
1592         'page_max' => $pagecount,
1593         'result_count' => count($linksToDisplay),
1594         'search_term' => $searchterm,
1595         'search_tags' => $searchtags,
1596         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1597         'redirector' => $conf->get('redirector.url'),  // Optional redirector URL.
1598         'links' => $linkDisp,
1599     );
1600
1601     // If there is only a single link, we change on-the-fly the title of the page.
1602     if (count($linksToDisplay) == 1) {
1603         $data['pagetitle'] = $linksToDisplay[$keys[0]]['title'] .' - '. $conf->get('general.title');
1604     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1605         $data['pagetitle'] = t('Search: ');
1606         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1607         $bracketWrap = function ($tag) {
1608             return '['. $tag .']';
1609         };
1610         $data['pagetitle'] .= ! empty($searchtags)
1611             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1612             : '';
1613         $data['pagetitle'] .= '- '. $conf->get('general.title');
1614     }
1615
1616     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1617
1618     foreach ($data as $key => $value) {
1619         $PAGE->assign($key, $value);
1620     }
1621
1622     return;
1623 }
1624
1625 /**
1626  * Compute the thumbnail for a link.
1627  *
1628  * With a link to the original URL.
1629  * Understands various services (youtube.com...)
1630  * Input: $url = URL for which the thumbnail must be found.
1631  *        $href = if provided, this URL will be followed instead of $url
1632  * Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
1633  * Some of them may be missing.
1634  * Return an empty array if no thumbnail available.
1635  *
1636  * @param ConfigManager $conf Configuration Manager instance.
1637  * @param string        $url
1638  * @param string|bool   $href
1639  *
1640  * @return array
1641  */
1642 function computeThumbnail($conf, $url, $href = false)
1643 {
1644     if (!$conf->get('thumbnail.enable_thumbnails')) return array();
1645     if ($href==false) $href=$url;
1646
1647     // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link.
1648     // (e.g. http://www.youtube.com/watch?v=spVypYk4kto --->  http://img.youtube.com/vi/spVypYk4kto/default.jpg )
1649     //                                     ^^^^^^^^^^^                                 ^^^^^^^^^^^
1650     $domain = parse_url($url,PHP_URL_HOST);
1651     if ($domain=='youtube.com' || $domain=='www.youtube.com')
1652     {
1653         parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail
1654         if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg',
1655                                                'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1656     }
1657     if ($domain=='youtu.be') // Youtube short links
1658     {
1659         $path = parse_url($url,PHP_URL_PATH);
1660         return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg',
1661                      'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail');
1662     }
1663     if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting
1664     {
1665         parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename.
1666         if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']),
1667                                                                     'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail');
1668     }
1669
1670     if ($domain=='imgur.com')
1671     {
1672         $path = parse_url($url,PHP_URL_PATH);
1673         if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available.
1674         if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg',
1675                                                   'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1676         if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg',
1677                                                         'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1678
1679         if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg',
1680                                                      'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1681     }
1682     if ($domain=='i.imgur.com')
1683     {
1684         $pi = pathinfo(parse_url($url,PHP_URL_PATH));
1685         if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg',
1686                                                   'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail');
1687     }
1688     if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com')
1689     {
1690         if (strpos($url,'dailymotion.com/video/')!==false)
1691         {
1692             $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url);
1693             return array('src'=>$thumburl,
1694                          'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail');
1695         }
1696     }
1697     if (endsWith($domain,'.imageshack.us'))
1698     {
1699         $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1700         if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1701         {
1702             $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext;
1703             return array('src'=>$thumburl,
1704                          'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
1705         }
1706     }
1707
1708     // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
1709     // So we deport the thumbnail generation in order not to slow down page generation
1710     // (and we also cache the thumbnail)
1711
1712     if (! $conf->get('thumbnail.enable_localcache')) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache.
1713
1714     if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')
1715         || $domain=='vimeo.com'
1716         || $domain=='ted.com' || endsWith($domain,'.ted.com')
1717         || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com')
1718     )
1719     {
1720         if ($domain=='vimeo.com')
1721         {   // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric)
1722             $path = parse_url($url,PHP_URL_PATH);
1723             if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL.
1724         }
1725         if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
1726         {   // Make sure this URL points to a single comic (/xxx... where xxx is numeric)
1727             $path = parse_url($url,PHP_URL_PATH);
1728             if (!preg_match('!/\d+.+?!',$path)) return array();
1729         }
1730         if ($domain=='ted.com' || endsWith($domain,'.ted.com'))
1731         {   // Make sure this TED URL points to a video (/talks/...)
1732             $path = parse_url($url,PHP_URL_PATH);
1733             if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL.
1734         }
1735         $sign = hash_hmac('sha256', $url, $conf->get('credentials.salt')); // We use the salt to sign data (it's random, secret, and specific to each installation)
1736         return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
1737                      'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
1738     }
1739
1740     // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif
1741     // Technically speaking, we should download ALL links and check their Content-Type to see if they are images.
1742     // But using the extension will do.
1743     $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION));
1744     if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif')
1745     {
1746         $sign = hash_hmac('sha256', $url, $conf->get('credentials.salt')); // We use the salt to sign data (it's random, secret, and specific to each installation)
1747         return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url),
1748                      'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail');
1749     }
1750     return array(); // No thumbnail.
1751
1752 }
1753
1754
1755 // Returns the HTML code to display a thumbnail for a link
1756 // with a link to the original URL.
1757 // Understands various services (youtube.com...)
1758 // Input: $url = URL for which the thumbnail must be found.
1759 //        $href = if provided, this URL will be followed instead of $url
1760 // Returns '' if no thumbnail available.
1761 function thumbnail($url,$href=false)
1762 {
1763     // FIXME!
1764     global $conf;
1765     $t = computeThumbnail($conf, $url,$href);
1766     if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
1767
1768     $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"';
1769     if (!empty($t['width']))  $html.=' width="'.escape($t['width']).'"';
1770     if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1771     if (!empty($t['style']))  $html.=' style="'.escape($t['style']).'"';
1772     if (!empty($t['alt']))    $html.=' alt="'.escape($t['alt']).'"';
1773     $html.='></a>';
1774     return $html;
1775 }
1776
1777 // Returns the HTML code to display a thumbnail for a link
1778 // for the picture wall (using lazy image loading)
1779 // Understands various services (youtube.com...)
1780 // Input: $url = URL for which the thumbnail must be found.
1781 //        $href = if provided, this URL will be followed instead of $url
1782 // Returns '' if no thumbnail available.
1783 function lazyThumbnail($conf, $url,$href=false)
1784 {
1785     // FIXME!
1786     global $conf;
1787     $t = computeThumbnail($conf, $url,$href);
1788     if (count($t)==0) return ''; // Empty array = no thumbnail for this URL.
1789
1790     $html='<a href="'.escape($t['href']).'">';
1791
1792     // Lazy image
1793     $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"';
1794
1795     if (!empty($t['width']))  $html.=' width="'.escape($t['width']).'"';
1796     if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1797     if (!empty($t['style']))  $html.=' style="'.escape($t['style']).'"';
1798     if (!empty($t['alt']))    $html.=' alt="'.escape($t['alt']).'"';
1799     $html.='>';
1800
1801     // No-JavaScript fallback.
1802     $html.='<noscript><img src="'.escape($t['src']).'"';
1803     if (!empty($t['width']))  $html.=' width="'.escape($t['width']).'"';
1804     if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"';
1805     if (!empty($t['style']))  $html.=' style="'.escape($t['style']).'"';
1806     if (!empty($t['alt']))    $html.=' alt="'.escape($t['alt']).'"';
1807     $html.='></noscript></a>';
1808
1809     return $html;
1810 }
1811
1812
1813 /**
1814  * Installation
1815  * This function should NEVER be called if the file data/config.php exists.
1816  *
1817  * @param ConfigManager  $conf           Configuration Manager instance.
1818  * @param SessionManager $sessionManager SessionManager instance
1819  */
1820 function install($conf, $sessionManager) {
1821     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1822     if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
1823
1824
1825     // This part makes sure sessions works correctly.
1826     // (Because on some hosts, session.save_path may not be set correctly,
1827     // or we may not have write access to it.)
1828     if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
1829     {
1830         // Step 2: Check if data in session is correct.
1831         $msg = t(
1832             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1833             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1834             'and that you have write access to it.<br>'.
1835             'It currently points to %s.<br>'.
1836             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1837             'or any custom hostname without a dot causes cookie storage to fail. '.
1838             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1839         );
1840         $msg = sprintf($msg, session_save_path());
1841         echo $msg;
1842         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1843         die;
1844     }
1845     if (!isset($_SESSION['session_tested']))
1846     {   // Step 1 : Try to store data in session and reload page.
1847         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1848         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1849     }
1850     if (isset($_GET['test_session']))
1851     {   // Step 3: Sessions are OK. Remove test parameter from URL.
1852         header('Location: '.index_url($_SERVER));
1853     }
1854
1855
1856     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
1857     {
1858         $tz = 'UTC';
1859         if (!empty($_POST['continent']) && !empty($_POST['city'])
1860             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1861         ) {
1862             $tz = $_POST['continent'].'/'.$_POST['city'];
1863         }
1864         $conf->set('general.timezone', $tz);
1865         $login = $_POST['setlogin'];
1866         $conf->set('credentials.login', $login);
1867         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1868         $conf->set('credentials.salt', $salt);
1869         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1870         if (!empty($_POST['title'])) {
1871             $conf->set('general.title', escape($_POST['title']));
1872         } else {
1873             $conf->set('general.title', 'Shared links on '.escape(index_url($_SERVER)));
1874         }
1875         $conf->set('translation.language', escape($_POST['language']));
1876         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1877         $conf->set('api.enabled', !empty($_POST['enableApi']));
1878         $conf->set(
1879             'api.secret',
1880             generate_api_secret(
1881                 $conf->get('credentials.login'),
1882                 $conf->get('credentials.salt')
1883             )
1884         );
1885         try {
1886             // Everything is ok, let's create config file.
1887             $conf->write($loginManager->isLoggedIn());
1888         }
1889         catch(Exception $e) {
1890             error_log(
1891                     'ERROR while writing config file after installation.' . PHP_EOL .
1892                     $e->getMessage()
1893                 );
1894
1895             // TODO: do not handle exceptions/errors in JS.
1896             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1897             exit;
1898         }
1899         echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
1900         exit;
1901     }
1902
1903     $PAGE = new PageBuilder($conf, null, $sessionManager->generateToken());
1904     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1905     $PAGE->assign('continents', $continents);
1906     $PAGE->assign('cities', $cities);
1907     $PAGE->assign('languages', Languages::getAvailableLanguages());
1908     $PAGE->renderPage('install');
1909     exit;
1910 }
1911
1912 /**
1913  * Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL,
1914  * I have deported the thumbnail URL code generation here, otherwise this would slow down page generation.
1915  * The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail.
1916  * This function is called by passing the URL:
1917  * http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL]
1918  * [URL] is the URL of the link (e.g. a flickr page)
1919  * [HMAC] is the signature for the [URL] (so that these URL cannot be forged).
1920  * The function below will fetch the image from the webservice and store it in the cache.
1921  *
1922  * @param ConfigManager $conf Configuration Manager instance,
1923  */
1924 function genThumbnail($conf)
1925 {
1926     // Make sure the parameters in the URL were generated by us.
1927     $sign = hash_hmac('sha256', $_GET['url'], $conf->get('credentials.salt'));
1928     if ($sign!=$_GET['hmac']) die('Naughty boy!');
1929
1930     $cacheDir = $conf->get('resource.thumbnails_cache', 'cache');
1931     // Let's see if we don't already have the image for this URL in the cache.
1932     $thumbname=hash('sha1',$_GET['url']).'.jpg';
1933     if (is_file($cacheDir .'/'. $thumbname))
1934     {   // We have the thumbnail, just serve it:
1935         header('Content-Type: image/jpeg');
1936         echo file_get_contents($cacheDir .'/'. $thumbname);
1937         return;
1938     }
1939     // We may also serve a blank image (if service did not respond)
1940     $blankname=hash('sha1',$_GET['url']).'.gif';
1941     if (is_file($cacheDir .'/'. $blankname))
1942     {
1943         header('Content-Type: image/gif');
1944         echo file_get_contents($cacheDir .'/'. $blankname);
1945         return;
1946     }
1947
1948     // Otherwise, generate the thumbnail.
1949     $url = $_GET['url'];
1950     $domain = parse_url($url,PHP_URL_HOST);
1951
1952     if ($domain=='flickr.com' || endsWith($domain,'.flickr.com'))
1953     {
1954         // Crude replacement to handle new flickr domain policy (They prefer www. now)
1955         $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url);
1956
1957         // Is this a link to an image, or to a flickr page ?
1958         $imageurl='';
1959         if (endsWith(parse_url($url, PHP_URL_PATH), '.jpg'))
1960         {  // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg
1961             preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches);
1962             if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg';
1963         }
1964         else // This is a flickr page (html)
1965         {
1966             // Get the flickr html page.
1967             list($headers, $content) = get_http_response($url, 20);
1968             if (strpos($headers[0], '200 OK') !== false)
1969             {
1970                 // flickr now nicely provides the URL of the thumbnail in each flickr page.
1971                 preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches);
1972                 if (!empty($matches[1])) $imageurl=$matches[1];
1973
1974                 // In albums (and some other pages), the link rel="image_src" is not provided,
1975                 // but flickr provides:
1976                 // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" />
1977                 if ($imageurl=='')
1978                 {
1979                     preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches);
1980                     if (!empty($matches[1])) $imageurl=$matches[1];
1981                 }
1982             }
1983         }
1984
1985         if ($imageurl!='')
1986         {   // Let's download the image.
1987             // Image is 240x120, so 10 seconds to download should be enough.
1988             list($headers, $content) = get_http_response($imageurl, 10);
1989             if (strpos($headers[0], '200 OK') !== false) {
1990                 // Save image to cache.
1991                 file_put_contents($cacheDir .'/'. $thumbname, $content);
1992                 header('Content-Type: image/jpeg');
1993                 echo $content;
1994                 return;
1995             }
1996         }
1997     }
1998
1999     elseif ($domain=='vimeo.com' )
2000     {
2001         // This is more complex: we have to perform a HTTP request, then parse the result.
2002         // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098
2003         $vid = substr(parse_url($url,PHP_URL_PATH),1);
2004         list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5);
2005         if (strpos($headers[0], '200 OK') !== false) {
2006             $t = unserialize($content);
2007             $imageurl = $t[0]['thumbnail_medium'];
2008             // Then we download the image and serve it to our client.
2009             list($headers, $content) = get_http_response($imageurl, 10);
2010             if (strpos($headers[0], '200 OK') !== false) {
2011                 // Save image to cache.
2012                 file_put_contents($cacheDir .'/'. $thumbname, $content);
2013                 header('Content-Type: image/jpeg');
2014                 echo $content;
2015                 return;
2016             }
2017         }
2018     }
2019
2020     elseif ($domain=='ted.com' || endsWith($domain,'.ted.com'))
2021     {
2022         // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
2023         // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
2024         // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
2025         list($headers, $content) = get_http_response($url, 5);
2026         if (strpos($headers[0], '200 OK') !== false) {
2027             // Extract the link to the thumbnail
2028             preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches);
2029             if (!empty($matches[1]))
2030             {   // Let's download the image.
2031                 $imageurl=$matches[1];
2032                 // No control on image size, so wait long enough
2033                 list($headers, $content) = get_http_response($imageurl, 20);
2034                 if (strpos($headers[0], '200 OK') !== false) {
2035                     $filepath = $cacheDir .'/'. $thumbname;
2036                     file_put_contents($filepath, $content); // Save image to cache.
2037                     if (resizeImage($filepath))
2038                     {
2039                         header('Content-Type: image/jpeg');
2040                         echo file_get_contents($filepath);
2041                         return;
2042                     }
2043                 }
2044             }
2045         }
2046     }
2047
2048     elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com'))
2049     {
2050         // There is no thumbnail available for xkcd comics, so download the whole image and resize it.
2051         // http://xkcd.com/327/
2052         // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
2053         list($headers, $content) = get_http_response($url, 5);
2054         if (strpos($headers[0], '200 OK') !== false) {
2055             // Extract the link to the thumbnail
2056             preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches);
2057             if (!empty($matches[1]))
2058             {   // Let's download the image.
2059                 $imageurl=$matches[1];
2060                 // No control on image size, so wait long enough
2061                 list($headers, $content) = get_http_response($imageurl, 20);
2062                 if (strpos($headers[0], '200 OK') !== false) {
2063                     $filepath = $cacheDir.'/'.$thumbname;
2064                     // Save image to cache.
2065                     file_put_contents($filepath, $content);
2066                     if (resizeImage($filepath))
2067                     {
2068                         header('Content-Type: image/jpeg');
2069                         echo file_get_contents($filepath);
2070                         return;
2071                     }
2072                 }
2073             }
2074         }
2075     }
2076
2077     else
2078     {
2079         // For all other domains, we try to download the image and make a thumbnail.
2080         // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
2081         list($headers, $content) = get_http_response($url, 30);
2082         if (strpos($headers[0], '200 OK') !== false) {
2083             $filepath = $cacheDir .'/'.$thumbname;
2084             // Save image to cache.
2085             file_put_contents($filepath, $content);
2086             if (resizeImage($filepath))
2087             {
2088                 header('Content-Type: image/jpeg');
2089                 echo file_get_contents($filepath);
2090                 return;
2091             }
2092         }
2093     }
2094
2095
2096     // Otherwise, return an empty image (8x8 transparent gif)
2097     $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
2098     // Also put something in cache so that this URL is not requested twice.
2099     file_put_contents($cacheDir .'/'. $blankname, $blankgif);
2100     header('Content-Type: image/gif');
2101     echo $blankgif;
2102 }
2103
2104 // Make a thumbnail of the image (to width: 120 pixels)
2105 // Returns true if success, false otherwise.
2106 function resizeImage($filepath)
2107 {
2108     if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible.
2109
2110     // Trick: some stupid people rename GIF as JPEG... or else.
2111     // So we really try to open each image type whatever the extension is.
2112     $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type.
2113     $im=false;
2114     $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough.
2115     $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath);
2116     $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath);
2117     if (!$im) return false;  // Unable to open image (corrupted or not an image)
2118     $w = imagesx($im);
2119     $h = imagesy($im);
2120     $ystart = 0; $yheight=$h;
2121     if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; }
2122     $nw = 120;   // Desired width
2123     $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height.
2124     // Resize image:
2125     $im2 = imagecreatetruecolor($nw,$nh);
2126     imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight);
2127     imageinterlace($im2,true); // For progressive JPEG.
2128     $tempname=$filepath.'_TEMP.jpg';
2129     imagejpeg($im2, $tempname, 90);
2130     imagedestroy($im);
2131     imagedestroy($im2);
2132     unlink($filepath);
2133     rename($tempname,$filepath);  // Overwrite original picture with thumbnail.
2134     return true;
2135 }
2136
2137 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=genthumbnail')) { genThumbnail($conf); exit; }  // Thumbnail generation/cache does not need the link database.
2138 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) { showDailyRSS($conf); exit; }
2139 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
2140     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
2141 }
2142
2143 try {
2144     $history = new History($conf->get('resource.history'));
2145 } catch(Exception $e) {
2146     die($e->getMessage());
2147 }
2148
2149 $linkDb = new LinkDB(
2150     $conf->get('resource.datastore'),
2151     $loginManager->isLoggedIn(),
2152     $conf->get('privacy.hide_public_links'),
2153     $conf->get('redirector.url'),
2154     $conf->get('redirector.encode_url')
2155 );
2156
2157 $container = new \Slim\Container();
2158 $container['conf'] = $conf;
2159 $container['plugins'] = $pluginManager;
2160 $container['history'] = $history;
2161 $app = new \Slim\App($container);
2162
2163 // REST API routes
2164 $app->group('/api/v1', function() {
2165     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
2166     $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
2167     $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
2168     $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
2169     $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
2170     $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
2171     $this->get('/history', '\Shaarli\Api\Controllers\History:getHistory')->setName('getHistory');
2172 })->add('\Shaarli\Api\ApiMiddleware');
2173
2174 $response = $app->run(true);
2175 // Hack to make Slim and Shaarli router work together:
2176 // If a Slim route isn't found and NOT API call, we call renderPage().
2177 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
2178     // We use UTF-8 for proper international characters handling.
2179     header('Content-Type: text/html; charset=utf-8');
2180     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
2181 } else {
2182     $app->respond($response);
2183 }