index.php

   1 <?php
   2 /**
   3  * Shaarli - The personal, minimalist, super-fast, database free, bookmarking service.
   4  *
   5  * Friendly fork by the Shaarli community:
   6  *  - https://github.com/shaarli/Shaarli
   7  *
   8  * Original project by sebsauvage.net:
   9  *  - http://sebsauvage.net/wiki/doku.php?id=php:shaarli
  10  *  - https://github.com/sebsauvage/Shaarli
  11  *
  12  * Licence: http://www.opensource.org/licenses/zlib-license.php
  13  */
  14
  15 // Set 'UTC' as the default timezone if it is not defined in php.ini
  16 // See http://php.net/manual/en/datetime.configuration.php#ini.date.timezone
  17 if (date_default_timezone_get() == '') {
  18     date_default_timezone_set('UTC');
  19 }
  20
  21 /*
  22  * PHP configuration
  23  */
  24
  25 // http://server.com/x/shaarli --> /shaarli/
  26 define('WEB_PATH', substr($_SERVER['REQUEST_URI'], 0, 1+strrpos($_SERVER['REQUEST_URI'], '/', 0)));
  27
  28 // High execution time in case of problematic imports/exports.
  29 ini_set('max_input_time', '60');
  30
  31 // Try to set max upload file size and read
  32 ini_set('memory_limit', '128M');
  33 ini_set('post_max_size', '16M');
  34 ini_set('upload_max_filesize', '16M');
  35
  36 // See all error except warnings
  37 error_reporting(E_ALL^E_WARNING);
  38
  39 // 3rd-party libraries
  40 if (! file_exists(__DIR__ . '/vendor/autoload.php')) {
  41     header('Content-Type: text/plain; charset=utf-8');
  42     echo "Error: missing Composer configuration\n\n"
  43         ."If you installed Shaarli through Git or using the development branch,\n"
  44         ."please refer to the installation documentation to install PHP"
  45         ." dependencies using Composer:\n"
  46         ."- https://shaarli.readthedocs.io/en/master/Server-configuration/\n"
  47         ."- https://shaarli.readthedocs.io/en/master/Download-and-Installation/";
  48     exit;
  49 }
  50 require_once 'inc/rain.tpl.class.php';
  51 require_once __DIR__ . '/vendor/autoload.php';
  52
  53 // Shaarli library
  54 require_once 'application/bookmark/LinkUtils.php';
  55 require_once 'application/config/ConfigPlugin.php';
  56 require_once 'application/feed/Cache.php';
  57 require_once 'application/http/HttpUtils.php';
  58 require_once 'application/http/UrlUtils.php';
  59 require_once 'application/updater/UpdaterUtils.php';
  60 require_once 'application/FileUtils.php';
  61 require_once 'application/TimeZone.php';
  62 require_once 'application/Utils.php';
  63
  64 use Shaarli\ApplicationUtils;
  65 use Shaarli\Bookmark\Bookmark;
  66 use Shaarli\Bookmark\BookmarkFileService;
  67 use Shaarli\Bookmark\BookmarkFilter;
  68 use Shaarli\Bookmark\BookmarkServiceInterface;
  69 use Shaarli\Bookmark\Exception\BookmarkNotFoundException;
  70 use Shaarli\Config\ConfigManager;
  71 use Shaarli\Container\ContainerBuilder;
  72 use Shaarli\Feed\CachedPage;
  73 use Shaarli\Feed\FeedBuilder;
  74 use Shaarli\Formatter\BookmarkMarkdownFormatter;
  75 use Shaarli\Formatter\FormatterFactory;
  76 use Shaarli\History;
  77 use Shaarli\Languages;
  78 use Shaarli\Netscape\NetscapeBookmarkUtils;
  79 use Shaarli\Plugin\PluginManager;
  80 use Shaarli\Render\PageBuilder;
  81 use Shaarli\Render\ThemeUtils;
  82 use Shaarli\Router;
  83 use Shaarli\Security\LoginManager;
  84 use Shaarli\Security\SessionManager;
  85 use Shaarli\Thumbnailer;
  86 use Shaarli\Updater\Updater;
  87 use Shaarli\Updater\UpdaterUtils;
  88 use Slim\App;
  89
  90 // Ensure the PHP version is supported
  91 try {
  92     ApplicationUtils::checkPHPVersion('7.1', PHP_VERSION);
  93 } catch (Exception $exc) {
  94     header('Content-Type: text/plain; charset=utf-8');
  95     echo $exc->getMessage();
  96     exit;
  97 }
  98
  99 define('SHAARLI_VERSION', ApplicationUtils::getVersion(__DIR__ .'/'. ApplicationUtils::$VERSION_FILE));
 100
 101 // Force cookie path (but do not change lifetime)
 102 $cookie = session_get_cookie_params();
 103 $cookiedir = '';
 104 if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 105     $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
 106 }
 107 // Set default cookie expiration and path.
 108 session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
 109 // Set session parameters on server side.
 110 // Use cookies to store session.
 111 ini_set('session.use_cookies', 1);
 112 // Force cookies for session (phpsessionID forbidden in URL).
 113 ini_set('session.use_only_cookies', 1);
 114 // Prevent PHP form using sessionID in URL if cookies are disabled.
 115 ini_set('session.use_trans_sid', false);
 116
 117 session_name('shaarli');
 118 // Start session if needed (Some server auto-start sessions).
 119 if (session_status() == PHP_SESSION_NONE) {
 120     session_start();
 121 }
 122
 123 // Regenerate session ID if invalid or not defined in cookie.
 124 if (isset($_COOKIE['shaarli']) && !SessionManager::checkId($_COOKIE['shaarli'])) {
 125     session_regenerate_id(true);
 126     $_COOKIE['shaarli'] = session_id();
 127 }
 128
 129 $conf = new ConfigManager();
 130
 131 // In dev mode, throw exception on any warning
 132 if ($conf->get('dev.debug', false)) {
 133     // See all errors (for debugging only)
 134     error_reporting(-1);
 135
 136     set_error_handler(function($errno, $errstr, $errfile, $errline, array $errcontext) {
 137         throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
 138     });
 139 }
 140
 141 $sessionManager = new SessionManager($_SESSION, $conf);
 142 $loginManager = new LoginManager($conf, $sessionManager);
 143 $loginManager->generateStaySignedInToken($_SERVER['REMOTE_ADDR']);
 144 $clientIpId = client_ip_id($_SERVER);
 145
 146 // LC_MESSAGES isn't defined without php-intl, in this case use LC_COLLATE locale instead.
 147 if (! defined('LC_MESSAGES')) {
 148     define('LC_MESSAGES', LC_COLLATE);
 149 }
 150
 151 // Sniff browser language and set date format accordingly.
 152 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
 153     autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']);
 154 }
 155
 156 new Languages(setlocale(LC_MESSAGES, 0), $conf);
 157
 158 $conf->setEmpty('general.timezone', date_default_timezone_get());
 159 $conf->setEmpty('general.title', t('Shared bookmarks on '). escape(index_url($_SERVER)));
 160 RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl').'/'.$conf->get('resource.theme').'/'; // template directory
 161 RainTPL::$cache_dir = $conf->get('resource.raintpl_tmp'); // cache directory
 162
 163 $pluginManager = new PluginManager($conf);
 164 $pluginManager->load($conf->get('general.enabled_plugins'));
 165
 166 date_default_timezone_set($conf->get('general.timezone', 'UTC'));
 167
 168 ob_start();  // Output buffering for the page cache.
 169
 170 // Prevent caching on client side or proxy: (yes, it's ugly)
 171 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
 172 header("Cache-Control: no-store, no-cache, must-revalidate");
 173 header("Cache-Control: post-check=0, pre-check=0", false);
 174 header("Pragma: no-cache");
 175
 176 if (! is_file($conf->getConfigFileExt())) {
 177     // Ensure Shaarli has proper access to its resources
 178     $errors = ApplicationUtils::checkResourcePermissions($conf);
 179
 180     if ($errors != array()) {
 181         $message = '<p>'. t('Insufficient permissions:') .'</p><ul>';
 182
 183         foreach ($errors as $error) {
 184             $message .= '<li>'.$error.'</li>';
 185         }
 186         $message .= '</ul>';
 187
 188         header('Content-Type: text/html; charset=utf-8');
 189         echo $message;
 190         exit;
 191     }
 192
 193     // Display the installation form if no existing config is found
 194     install($conf, $sessionManager, $loginManager);
 195 }
 196
 197 $loginManager->checkLoginState($_COOKIE, $clientIpId);
 198
 199 /**
 200  * Adapter function to ensure compatibility with third-party templates
 201  *
 202  * @see https://github.com/shaarli/Shaarli/pull/1086
 203  *
 204  * @return bool true when the user is logged in, false otherwise
 205  */
 206 function isLoggedIn()
 207 {
 208     global $loginManager;
 209     return $loginManager->isLoggedIn();
 210 }
 211
 212
 213 // ------------------------------------------------------------------------------------------
 214 // Process login form: Check if login/password is correct.
 215 if (isset($_POST['login'])) {
 216     if (! $loginManager->canLogin($_SERVER)) {
 217         die(t('I said: NO. You are banned for the moment. Go away.'));
 218     }
 219     if (isset($_POST['password'])
 220         && $sessionManager->checkToken($_POST['token'])
 221         && $loginManager->checkCredentials($_SERVER['REMOTE_ADDR'], $clientIpId, $_POST['login'], $_POST['password'])
 222     ) {
 223         $loginManager->handleSuccessfulLogin($_SERVER);
 224
 225         $cookiedir = '';
 226         if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 227             // Note: Never forget the trailing slash on the cookie path!
 228             $cookiedir = dirname($_SERVER["SCRIPT_NAME"]) . '/';
 229         }
 230
 231         if (!empty($_POST['longlastingsession'])) {
 232             // Keep the session cookie even after the browser closes
 233             $sessionManager->setStaySignedIn(true);
 234             $expirationTime = $sessionManager->extendSession();
 235
 236             setcookie(
 237                 $loginManager::$STAY_SIGNED_IN_COOKIE,
 238                 $loginManager->getStaySignedInToken(),
 239                 $expirationTime,
 240                 WEB_PATH
 241             );
 242         } else {
 243             // Standard session expiration (=when browser closes)
 244             $expirationTime = 0;
 245         }
 246
 247         // Send cookie with the new expiration date to the browser
 248         session_destroy();
 249         session_set_cookie_params($expirationTime, $cookiedir, $_SERVER['SERVER_NAME']);
 250         session_start();
 251         session_regenerate_id(true);
 252
 253         // Optional redirect after login:
 254         if (isset($_GET['post'])) {
 255             $uri = '?post='. urlencode($_GET['post']);
 256             foreach (array('description', 'source', 'title', 'tags') as $param) {
 257                 if (!empty($_GET[$param])) {
 258                     $uri .= '&'.$param.'='.urlencode($_GET[$param]);
 259                 }
 260             }
 261             header('Location: '. $uri);
 262             exit;
 263         }
 264
 265         if (isset($_GET['edit_link'])) {
 266             header('Location: ?edit_link='. escape($_GET['edit_link']));
 267             exit;
 268         }
 269
 270         if (isset($_POST['returnurl'])) {
 271             // Prevent loops over login screen.
 272             if (strpos($_POST['returnurl'], 'do=login') === false) {
 273                 header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST']));
 274                 exit;
 275             }
 276         }
 277         header('Location: ?');
 278         exit;
 279     } else {
 280         $loginManager->handleFailedLogin($_SERVER);
 281         $redir = '&username='. urlencode($_POST['login']);
 282         if (isset($_GET['post'])) {
 283             $redir .= '&post=' . urlencode($_GET['post']);
 284             foreach (array('description', 'source', 'title', 'tags') as $param) {
 285                 if (!empty($_GET[$param])) {
 286                     $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
 287                 }
 288             }
 289         }
 290         // Redirect to login screen.
 291         echo '<script>alert("'. t("Wrong login/password.") .'");document.location=\'?do=login'.$redir.'\';</script>';
 292         exit;
 293     }
 294 }
 295
 296 // ------------------------------------------------------------------------------------------
 297 // Token management for XSRF protection
 298 // Token should be used in any form which acts on data (create,update,delete,import...).
 299 if (!isset($_SESSION['tokens'])) {
 300     $_SESSION['tokens']=array();  // Token are attached to the session.
 301 }
 302
 303 /**
 304  * Daily RSS feed: 1 RSS entry per day giving all the bookmarks on that day.
 305  * Gives the last 7 days (which have bookmarks).
 306  * This RSS feed cannot be filtered.
 307  *
 308  * @param BookmarkServiceInterface $bookmarkService
 309  * @param ConfigManager            $conf            Configuration Manager instance
 310  * @param LoginManager             $loginManager    LoginManager instance
 311  */
 312 function showDailyRSS($bookmarkService, $conf, $loginManager)
 313 {
 314     // Cache system
 315     $query = $_SERVER['QUERY_STRING'];
 316     $cache = new CachedPage(
 317         $conf->get('config.PAGE_CACHE'),
 318         page_url($_SERVER),
 319         startsWith($query, 'do=dailyrss') && !$loginManager->isLoggedIn()
 320     );
 321     $cached = $cache->cachedVersion();
 322     if (!empty($cached)) {
 323         echo $cached;
 324         exit;
 325     }
 326
 327     /* Some Shaarlies may have very few bookmarks, so we need to look
 328        back in time until we have enough days ($nb_of_days).
 329     */
 330     $nb_of_days = 7; // We take 7 days.
 331     $today = date('Ymd');
 332     $days = array();
 333
 334     foreach ($bookmarkService->search() as $bookmark) {
 335         $day = $bookmark->getCreated()->format('Ymd'); // Extract day (without time)
 336         if (strcmp($day, $today) < 0) {
 337             if (empty($days[$day])) {
 338                 $days[$day] = array();
 339             }
 340             $days[$day][] = $bookmark;
 341         }
 342
 343         if (count($days) > $nb_of_days) {
 344             break; // Have we collected enough days?
 345         }
 346     }
 347
 348     // Build the RSS feed.
 349     header('Content-Type: application/rss+xml; charset=utf-8');
 350     $pageaddr = escape(index_url($_SERVER));
 351     echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
 352     echo '<channel>';
 353     echo '<title>Daily - '. $conf->get('general.title') . '</title>';
 354     echo '<link>'. $pageaddr .'</link>';
 355     echo '<description>Daily shared bookmarks</description>';
 356     echo '<language>en-en</language>';
 357     echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
 358
 359     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 360     $formatter = $factory->getFormatter();
 361     $formatter->addContextData('index_url', index_url($_SERVER));
 362     // For each day.
 363     /** @var Bookmark[] $bookmarks */
 364     foreach ($days as $day => $bookmarks) {
 365         $formattedBookmarks = [];
 366         $dayDate = DateTime::createFromFormat(Bookmark::LINK_DATE_FORMAT, $day.'_000000');
 367         $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day);  // Absolute URL of the corresponding "Daily" page.
 368
 369         // We pre-format some fields for proper output.
 370         foreach ($bookmarks as $key => $bookmark) {
 371             $formattedBookmarks[$key] = $formatter->format($bookmark);
 372             // This page is a bit specific, we need raw description to calculate the length
 373             $formattedBookmarks[$key]['formatedDescription'] = $formattedBookmarks[$key]['description'];
 374             $formattedBookmarks[$key]['description'] = $bookmark->getDescription();
 375
 376             if ($bookmark->isNote()) {
 377                 $link['url'] = index_url($_SERVER) . $bookmark->getUrl();  // make permalink URL absolute
 378             }
 379         }
 380
 381         // Then build the HTML for this day:
 382         $tpl = new RainTPL();
 383         $tpl->assign('title', $conf->get('general.title'));
 384         $tpl->assign('daydate', $dayDate->getTimestamp());
 385         $tpl->assign('absurl', $absurl);
 386         $tpl->assign('links', $formattedBookmarks);
 387         $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
 388         $tpl->assign('hide_timestamps', $conf->get('privacy.hide_timestamps', false));
 389         $tpl->assign('index_url', $pageaddr);
 390         $html = $tpl->draw('dailyrss', true);
 391
 392         echo $html . PHP_EOL;
 393     }
 394     echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
 395
 396     $cache->cache(ob_get_contents());
 397     ob_end_flush();
 398     exit;
 399 }
 400
 401 /**
 402  * Show the 'Daily' page.
 403  *
 404  * @param PageBuilder              $pageBuilder     Template engine wrapper.
 405  * @param BookmarkServiceInterface $bookmarkService instance.
 406  * @param ConfigManager            $conf            Configuration Manager instance.
 407  * @param PluginManager            $pluginManager   Plugin Manager instance.
 408  * @param LoginManager             $loginManager    Login Manager instance
 409  */
 410 function showDaily($pageBuilder, $bookmarkService, $conf, $pluginManager, $loginManager)
 411 {
 412     if (isset($_GET['day'])) {
 413         $day = $_GET['day'];
 414         if ($day === date('Ymd', strtotime('now'))) {
 415             $pageBuilder->assign('dayDesc', t('Today'));
 416         } elseif ($day === date('Ymd', strtotime('-1 days'))) {
 417             $pageBuilder->assign('dayDesc', t('Yesterday'));
 418         }
 419     } else {
 420         $day = date('Ymd', strtotime('now')); // Today, in format YYYYMMDD.
 421         $pageBuilder->assign('dayDesc', t('Today'));
 422     }
 423
 424     $days = $bookmarkService->days();
 425     $i = array_search($day, $days);
 426     if ($i === false && count($days)) {
 427         // no bookmarks for day, but at least one day with bookmarks
 428         $i = count($days) - 1;
 429         $day = $days[$i];
 430     }
 431     $previousday = '';
 432     $nextday = '';
 433
 434     if ($i !== false) {
 435         if ($i >= 1) {
 436              $previousday = $days[$i - 1];
 437         }
 438         if ($i < count($days) - 1) {
 439             $nextday = $days[$i + 1];
 440         }
 441     }
 442     try {
 443         $linksToDisplay = $bookmarkService->filterDay($day);
 444     } catch (Exception $exc) {
 445         error_log($exc);
 446         $linksToDisplay = [];
 447     }
 448
 449     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 450     $formatter = $factory->getFormatter();
 451     // We pre-format some fields for proper output.
 452     foreach ($linksToDisplay as $key => $bookmark) {
 453         $linksToDisplay[$key] = $formatter->format($bookmark);
 454         // This page is a bit specific, we need raw description to calculate the length
 455         $linksToDisplay[$key]['formatedDescription'] = $linksToDisplay[$key]['description'];
 456         $linksToDisplay[$key]['description'] = $bookmark->getDescription();
 457     }
 458
 459     $dayDate = DateTime::createFromFormat(Bookmark::LINK_DATE_FORMAT, $day.'_000000');
 460     $data = array(
 461         'pagetitle' => $conf->get('general.title') .' - '. format_date($dayDate, false),
 462         'linksToDisplay' => $linksToDisplay,
 463         'day' => $dayDate->getTimestamp(),
 464         'dayDate' => $dayDate,
 465         'previousday' => $previousday,
 466         'nextday' => $nextday,
 467     );
 468
 469     /* Hook is called before column construction so that plugins don't have
 470        to deal with columns. */
 471     $pluginManager->executeHooks('render_daily', $data, array('loggedin' => $loginManager->isLoggedIn()));
 472
 473     /* We need to spread the articles on 3 columns.
 474        I did not want to use a JavaScript lib like http://masonry.desandro.com/
 475        so I manually spread entries with a simple method: I roughly evaluate the
 476        height of a div according to title and description length.
 477     */
 478     $columns = array(array(), array(), array()); // Entries to display, for each column.
 479     $fill = array(0, 0, 0);  // Rough estimate of columns fill.
 480     foreach ($data['linksToDisplay'] as $key => $bookmark) {
 481         // Roughly estimate length of entry (by counting characters)
 482         // Title: 30 chars = 1 line. 1 line is 30 pixels height.
 483         // Description: 836 characters gives roughly 342 pixel height.
 484         // This is not perfect, but it's usually OK.
 485         $length = strlen($bookmark['title']) + (342 * strlen($bookmark['description'])) / 836;
 486         if (! empty($bookmark['thumbnail'])) {
 487             $length += 100; // 1 thumbnails roughly takes 100 pixels height.
 488         }
 489         // Then put in column which is the less filled:
 490         $smallest = min($fill); // find smallest value in array.
 491         $index = array_search($smallest, $fill); // find index of this smallest value.
 492         array_push($columns[$index], $bookmark); // Put entry in this column.
 493         $fill[$index] += $length;
 494     }
 495
 496     $data['cols'] = $columns;
 497
 498     foreach ($data as $key => $value) {
 499         $pageBuilder->assign($key, $value);
 500     }
 501
 502     $pageBuilder->assign('pagetitle', t('Daily') .' - '. $conf->get('general.title', 'Shaarli'));
 503     $pageBuilder->renderPage('daily');
 504     exit;
 505 }
 506
 507 /**
 508  * Renders the linklist
 509  *
 510  * @param pageBuilder              $PAGE          pageBuilder instance.
 511  * @param BookmarkServiceInterface $linkDb        instance.
 512  * @param ConfigManager            $conf          Configuration Manager instance.
 513  * @param PluginManager            $pluginManager Plugin Manager instance.
 514  */
 515 function showLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
 516 {
 517     buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager);
 518     $PAGE->renderPage('linklist');
 519 }
 520
 521 /**
 522  * Render HTML page (according to URL parameters and user rights)
 523  *
 524  * @param ConfigManager            $conf           Configuration Manager instance.
 525  * @param PluginManager            $pluginManager  Plugin Manager instance,
 526  * @param BookmarkServiceInterface $bookmarkService
 527  * @param History                  $history        instance
 528  * @param SessionManager           $sessionManager SessionManager instance
 529  * @param LoginManager             $loginManager   LoginManager instance
 530  */
 531 function renderPage($conf, $pluginManager, $bookmarkService, $history, $sessionManager, $loginManager)
 532 {
 533     $updater = new Updater(
 534         UpdaterUtils::read_updates_file($conf->get('resource.updates')),
 535         $bookmarkService,
 536         $conf,
 537         $loginManager->isLoggedIn()
 538     );
 539     try {
 540         $newUpdates = $updater->update();
 541         if (! empty($newUpdates)) {
 542             UpdaterUtils::write_updates_file(
 543                 $conf->get('resource.updates'),
 544                 $updater->getDoneUpdates()
 545             );
 546         }
 547     } catch (Exception $e) {
 548         die($e->getMessage());
 549     }
 550
 551     $PAGE = new PageBuilder($conf, $_SESSION, $bookmarkService, $sessionManager->generateToken(), $loginManager->isLoggedIn());
 552     $PAGE->assign('linkcount', $bookmarkService->count(BookmarkFilter::$ALL));
 553     $PAGE->assign('privateLinkcount', $bookmarkService->count(BookmarkFilter::$PRIVATE));
 554     $PAGE->assign('plugin_errors', $pluginManager->getErrors());
 555
 556     // Determine which page will be rendered.
 557     $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
 558     $targetPage = Router::findPage($query, $_GET, $loginManager->isLoggedIn());
 559
 560     if (// if the user isn't logged in
 561         !$loginManager->isLoggedIn() &&
 562         // and Shaarli doesn't have public content...
 563         $conf->get('privacy.hide_public_links') &&
 564         // and is configured to enforce the login
 565         $conf->get('privacy.force_login') &&
 566         // and the current page isn't already the login page
 567         $targetPage !== Router::$PAGE_LOGIN &&
 568         // and the user is not requesting a feed (which would lead to a different content-type as expected)
 569         $targetPage !== Router::$PAGE_FEED_ATOM &&
 570         $targetPage !== Router::$PAGE_FEED_RSS
 571     ) {
 572         // force current page to be the login page
 573         $targetPage = Router::$PAGE_LOGIN;
 574     }
 575
 576     // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
 577     // Then assign generated data to RainTPL.
 578     $common_hooks = array(
 579         'includes',
 580         'header',
 581         'footer',
 582     );
 583
 584     foreach ($common_hooks as $name) {
 585         $plugin_data = array();
 586         $pluginManager->executeHooks(
 587             'render_' . $name,
 588             $plugin_data,
 589             array(
 590                 'target' => $targetPage,
 591                 'loggedin' => $loginManager->isLoggedIn()
 592             )
 593         );
 594         $PAGE->assign('plugins_' . $name, $plugin_data);
 595     }
 596
 597     // -------- Display login form.
 598     if ($targetPage == Router::$PAGE_LOGIN) {
 599         header('Location: ./login');
 600         exit;
 601     }
 602     // -------- User wants to logout.
 603     if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout')) {
 604         invalidateCaches($conf->get('resource.page_cache'));
 605         $sessionManager->logout();
 606         setcookie(LoginManager::$STAY_SIGNED_IN_COOKIE, 'false', 0, WEB_PATH);
 607         header('Location: ?');
 608         exit;
 609     }
 610
 611     // -------- Picture wall
 612     if ($targetPage == Router::$PAGE_PICWALL) {
 613         $PAGE->assign('pagetitle', t('Picture wall') .' - '. $conf->get('general.title', 'Shaarli'));
 614         if (! $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) === Thumbnailer::MODE_NONE) {
 615             $PAGE->assign('linksToDisplay', []);
 616             $PAGE->renderPage('picwall');
 617             exit;
 618         }
 619
 620         // Optionally filter the results:
 621         $links = $bookmarkService->search($_GET);
 622         $linksToDisplay = [];
 623
 624         // Get only bookmarks which have a thumbnail.
 625         // Note: we do not retrieve thumbnails here, the request is too heavy.
 626         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 627         $formatter = $factory->getFormatter();
 628         foreach ($links as $key => $link) {
 629             if ($link->getThumbnail() !== false) {
 630                 $linksToDisplay[] = $formatter->format($link);
 631             }
 632         }
 633
 634         $data = [
 635             'linksToDisplay' => $linksToDisplay,
 636         ];
 637         $pluginManager->executeHooks('render_picwall', $data, ['loggedin' => $loginManager->isLoggedIn()]);
 638
 639         foreach ($data as $key => $value) {
 640             $PAGE->assign($key, $value);
 641         }
 642
 643         $PAGE->renderPage('picwall');
 644         exit;
 645     }
 646
 647     // -------- Tag cloud
 648     if ($targetPage == Router::$PAGE_TAGCLOUD) {
 649         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 650         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 651         $tags = $bookmarkService->bookmarksCountPerTag($filteringTags, $visibility);
 652
 653         // We sort tags alphabetically, then choose a font size according to count.
 654         // First, find max value.
 655         $maxcount = 0;
 656         foreach ($tags as $value) {
 657             $maxcount = max($maxcount, $value);
 658         }
 659
 660         alphabetical_sort($tags, false, true);
 661
 662         $tagList = array();
 663         foreach ($tags as $key => $value) {
 664             if (in_array($key, $filteringTags)) {
 665                 continue;
 666             }
 667             // Tag font size scaling:
 668             //   default 15 and 30 logarithm bases affect scaling,
 669             //   22 and 6 are arbitrary font sizes for max and min sizes.
 670             $size = log($value, 15) / log($maxcount, 30) * 2.2 + 0.8;
 671             $tagList[$key] = array(
 672                 'count' => $value,
 673                 'size' => number_format($size, 2, '.', ''),
 674             );
 675         }
 676
 677         $searchTags = implode(' ', escape($filteringTags));
 678         $data = array(
 679             'search_tags' => $searchTags,
 680             'tags' => $tagList,
 681         );
 682         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => $loginManager->isLoggedIn()));
 683
 684         foreach ($data as $key => $value) {
 685             $PAGE->assign($key, $value);
 686         }
 687
 688         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 689         $PAGE->assign('pagetitle', $searchTags. t('Tag cloud') .' - '. $conf->get('general.title', 'Shaarli'));
 690         $PAGE->renderPage('tag.cloud');
 691         exit;
 692     }
 693
 694     // -------- Tag list
 695     if ($targetPage == Router::$PAGE_TAGLIST) {
 696         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 697         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 698         $tags = $bookmarkService->bookmarksCountPerTag($filteringTags, $visibility);
 699         foreach ($filteringTags as $tag) {
 700             if (array_key_exists($tag, $tags)) {
 701                 unset($tags[$tag]);
 702             }
 703         }
 704
 705         if (! empty($_GET['sort']) && $_GET['sort'] === 'alpha') {
 706             alphabetical_sort($tags, false, true);
 707         }
 708
 709         $searchTags = implode(' ', escape($filteringTags));
 710         $data = [
 711             'search_tags' => $searchTags,
 712             'tags' => $tags,
 713         ];
 714         $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => $loginManager->isLoggedIn()]);
 715
 716         foreach ($data as $key => $value) {
 717             $PAGE->assign($key, $value);
 718         }
 719
 720         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 721         $PAGE->assign('pagetitle', $searchTags . t('Tag list') .' - '. $conf->get('general.title', 'Shaarli'));
 722         $PAGE->renderPage('tag.list');
 723         exit;
 724     }
 725
 726     // Daily page.
 727     if ($targetPage == Router::$PAGE_DAILY) {
 728         showDaily($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 729     }
 730
 731     // ATOM and RSS feed.
 732     if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
 733         $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
 734         header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
 735
 736         // Cache system
 737         $query = $_SERVER['QUERY_STRING'];
 738         $cache = new CachedPage(
 739             $conf->get('resource.page_cache'),
 740             page_url($_SERVER),
 741             startsWith($query, 'do='. $targetPage) && !$loginManager->isLoggedIn()
 742         );
 743         $cached = $cache->cachedVersion();
 744         if (!empty($cached)) {
 745             echo $cached;
 746             exit;
 747         }
 748
 749         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 750         // Generate data.
 751         $feedGenerator = new FeedBuilder(
 752             $bookmarkService,
 753             $factory->getFormatter(),
 754             $feedType,
 755             $_SERVER,
 756             $_GET,
 757             $loginManager->isLoggedIn()
 758         );
 759         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 760         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 761         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 762         $data = $feedGenerator->buildData();
 763
 764         // Process plugin hook.
 765         $pluginManager->executeHooks('render_feed', $data, array(
 766             'loggedin' => $loginManager->isLoggedIn(),
 767             'target' => $targetPage,
 768         ));
 769
 770         // Render the template.
 771         $PAGE->assignAll($data);
 772         $PAGE->renderPage('feed.'. $feedType);
 773         $cache->cache(ob_get_contents());
 774         ob_end_flush();
 775         exit;
 776     }
 777
 778     // Display opensearch plugin (XML)
 779     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 780         header('Content-Type: application/xml; charset=utf-8');
 781         $PAGE->assign('serverurl', index_url($_SERVER));
 782         $PAGE->renderPage('opensearch');
 783         exit;
 784     }
 785
 786     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 787     if (isset($_GET['addtag'])) {
 788         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
 789         if (empty($_SERVER['HTTP_REFERER'])) {
 790             // In case browser does not send HTTP_REFERER
 791             header('Location: ?searchtags='.urlencode($_GET['addtag']));
 792             exit;
 793         }
 794         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 795
 796         // Prevent redirection loop
 797         if (isset($params['addtag'])) {
 798             unset($params['addtag']);
 799         }
 800
 801         // Check if this tag is already in the search query and ignore it if it is.
 802         // Each tag is always separated by a space
 803         if (isset($params['searchtags'])) {
 804             $current_tags = explode(' ', $params['searchtags']);
 805         } else {
 806             $current_tags = array();
 807         }
 808         $addtag = true;
 809         foreach ($current_tags as $value) {
 810             if ($value === $_GET['addtag']) {
 811                 $addtag = false;
 812                 break;
 813             }
 814         }
 815         // Append the tag if necessary
 816         if (empty($params['searchtags'])) {
 817             $params['searchtags'] = trim($_GET['addtag']);
 818         } elseif ($addtag) {
 819             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
 820         }
 821
 822         // We also remove page (keeping the same page has no sense, since the
 823         // results are different)
 824         unset($params['page']);
 825
 826         header('Location: ?'.http_build_query($params));
 827         exit;
 828     }
 829
 830     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 831     if (isset($_GET['removetag'])) {
 832         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 833         if (empty($_SERVER['HTTP_REFERER'])) {
 834             header('Location: ?');
 835             exit;
 836         }
 837
 838         // In case browser does not send HTTP_REFERER
 839         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 840
 841         // Prevent redirection loop
 842         if (isset($params['removetag'])) {
 843             unset($params['removetag']);
 844         }
 845
 846         if (isset($params['searchtags'])) {
 847             $tags = explode(' ', $params['searchtags']);
 848             // Remove value from array $tags.
 849             $tags = array_diff($tags, array($_GET['removetag']));
 850             $params['searchtags'] = implode(' ', $tags);
 851
 852             if (empty($params['searchtags'])) {
 853                 unset($params['searchtags']);
 854             }
 855
 856             // We also remove page (keeping the same page has no sense, since
 857             // the results are different)
 858             unset($params['page']);
 859         }
 860         header('Location: ?'.http_build_query($params));
 861         exit;
 862     }
 863
 864     // -------- User wants to change the number of bookmarks per page (linksperpage=...)
 865     if (isset($_GET['linksperpage'])) {
 866         if (is_numeric($_GET['linksperpage'])) {
 867             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 868         }
 869
 870         if (! empty($_SERVER['HTTP_REFERER'])) {
 871             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 872         } else {
 873             $location = '?';
 874         }
 875         header('Location: '. $location);
 876         exit;
 877     }
 878
 879     // -------- User wants to see only private bookmarks (toggle)
 880     if (isset($_GET['visibility'])) {
 881         if ($_GET['visibility'] === 'private') {
 882             // Visibility not set or not already private, set private, otherwise reset it
 883             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 884                 // See only private bookmarks
 885                 $_SESSION['visibility'] = 'private';
 886             } else {
 887                 unset($_SESSION['visibility']);
 888             }
 889         } elseif ($_GET['visibility'] === 'public') {
 890             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 891                 // See only public bookmarks
 892                 $_SESSION['visibility'] = 'public';
 893             } else {
 894                 unset($_SESSION['visibility']);
 895             }
 896         }
 897
 898         if (! empty($_SERVER['HTTP_REFERER'])) {
 899             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 900         } else {
 901             $location = '?';
 902         }
 903         header('Location: '. $location);
 904         exit;
 905     }
 906
 907     // -------- User wants to see only untagged bookmarks (toggle)
 908     if (isset($_GET['untaggedonly'])) {
 909         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 910
 911         if (! empty($_SERVER['HTTP_REFERER'])) {
 912             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 913         } else {
 914             $location = '?';
 915         }
 916         header('Location: '. $location);
 917         exit;
 918     }
 919
 920     // -------- Handle other actions allowed for non-logged in users:
 921     if (!$loginManager->isLoggedIn()) {
 922         // User tries to post new link but is not logged in:
 923         // Show login screen, then redirect to ?post=...
 924         if (isset($_GET['post'])) {
 925             header( // Redirect to login page, then back to post link.
 926                 'Location: ?do=login&post='.urlencode($_GET['post']).
 927                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 928                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 929                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 930                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 931             );
 932             exit;
 933         }
 934
 935         showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 936         if (isset($_GET['edit_link'])) {
 937             header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
 938             exit;
 939         }
 940
 941         exit; // Never remove this one! All operations below are reserved for logged in user.
 942     }
 943
 944     // -------- All other functions are reserved for the registered user:
 945
 946     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 947     if ($targetPage == Router::$PAGE_TOOLS) {
 948         $data = [
 949             'pageabsaddr' => index_url($_SERVER),
 950             'sslenabled' => is_https($_SERVER),
 951         ];
 952         $pluginManager->executeHooks('render_tools', $data);
 953
 954         foreach ($data as $key => $value) {
 955             $PAGE->assign($key, $value);
 956         }
 957
 958         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 959         $PAGE->renderPage('tools');
 960         exit;
 961     }
 962
 963     // -------- User wants to change his/her password.
 964     if ($targetPage == Router::$PAGE_CHANGEPASSWORD) {
 965         if ($conf->get('security.open_shaarli')) {
 966             die(t('You are not supposed to change a password on an Open Shaarli.'));
 967         }
 968
 969         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) {
 970             if (!$sessionManager->checkToken($_POST['token'])) {
 971                 die(t('Wrong token.')); // Go away!
 972             }
 973
 974             // Make sure old password is correct.
 975             $oldhash = sha1(
 976                 $_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt')
 977             );
 978             if ($oldhash != $conf->get('credentials.hash')) {
 979                 echo '<script>alert("'
 980                     . t('The old password is not correct.')
 981                     .'");document.location=\'?do=changepasswd\';</script>';
 982                 exit;
 983             }
 984             // Save new password
 985             // Salt renders rainbow-tables attacks useless.
 986             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 987             $conf->set(
 988                 'credentials.hash',
 989                 sha1(
 990                     $_POST['setpassword']
 991                     . $conf->get('credentials.login')
 992                     . $conf->get('credentials.salt')
 993                 )
 994             );
 995             try {
 996                 $conf->write($loginManager->isLoggedIn());
 997             } catch (Exception $e) {
 998                 error_log(
 999                     'ERROR while writing config file after changing password.' . PHP_EOL .
1000                     $e->getMessage()
1001                 );
1002
1003                 // TODO: do not handle exceptions/errors in JS.
1004                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1005                 exit;
1006             }
1007             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'?do=tools\';</script>';
1008             exit;
1009         } else {
1010             // show the change password form.
1011             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
1012             $PAGE->renderPage('changepassword');
1013             exit;
1014         }
1015     }
1016
1017     // -------- User wants to change configuration
1018     if ($targetPage == Router::$PAGE_CONFIGURE) {
1019         if (!empty($_POST['title'])) {
1020             if (!$sessionManager->checkToken($_POST['token'])) {
1021                 die(t('Wrong token.')); // Go away!
1022             }
1023             $tz = 'UTC';
1024             if (!empty($_POST['continent']) && !empty($_POST['city'])
1025                 && isTimeZoneValid($_POST['continent'], $_POST['city'])
1026             ) {
1027                 $tz = $_POST['continent'] . '/' . $_POST['city'];
1028             }
1029             $conf->set('general.timezone', $tz);
1030             $conf->set('general.title', escape($_POST['title']));
1031             $conf->set('general.header_link', escape($_POST['titleLink']));
1032             $conf->set('general.retrieve_description', !empty($_POST['retrieveDescription']));
1033             $conf->set('resource.theme', escape($_POST['theme']));
1034             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
1035             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
1036             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
1037             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1038             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
1039             $conf->set('api.enabled', !empty($_POST['enableApi']));
1040             $conf->set('api.secret', escape($_POST['apiSecret']));
1041             $conf->set('formatter', escape($_POST['formatter']));
1042
1043             if (! empty($_POST['language'])) {
1044                 $conf->set('translation.language', escape($_POST['language']));
1045             }
1046
1047             $thumbnailsMode = extension_loaded('gd') ? $_POST['enableThumbnails'] : Thumbnailer::MODE_NONE;
1048             if ($thumbnailsMode !== Thumbnailer::MODE_NONE
1049                 && $thumbnailsMode !== $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE)
1050             ) {
1051                 $_SESSION['warnings'][] = t(
1052                     'You have enabled or changed thumbnails mode. '
1053                     .'<a href="?do=thumbs_update">Please synchronize them</a>.'
1054                 );
1055             }
1056             $conf->set('thumbnails.mode', $thumbnailsMode);
1057
1058             try {
1059                 $conf->write($loginManager->isLoggedIn());
1060                 $history->updateSettings();
1061                 invalidateCaches($conf->get('resource.page_cache'));
1062             } catch (Exception $e) {
1063                 error_log(
1064                     'ERROR while writing config file after configuration update.' . PHP_EOL .
1065                     $e->getMessage()
1066                 );
1067
1068                 // TODO: do not handle exceptions/errors in JS.
1069                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=configure\';</script>';
1070                 exit;
1071             }
1072             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'?do=configure\';</script>';
1073             exit;
1074         } else {
1075             // Show the configuration form.
1076             $PAGE->assign('title', $conf->get('general.title'));
1077             $PAGE->assign('theme', $conf->get('resource.theme'));
1078             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
1079             $PAGE->assign('formatter_available', ['default', 'markdown']);
1080             list($continents, $cities) = generateTimeZoneData(
1081                 timezone_identifiers_list(),
1082                 $conf->get('general.timezone')
1083             );
1084             $PAGE->assign('continents', $continents);
1085             $PAGE->assign('cities', $cities);
1086             $PAGE->assign('retrieve_description', $conf->get('general.retrieve_description'));
1087             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
1088             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
1089             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
1090             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
1091             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
1092             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
1093             $PAGE->assign('api_secret', $conf->get('api.secret'));
1094             $PAGE->assign('languages', Languages::getAvailableLanguages());
1095             $PAGE->assign('gd_enabled', extension_loaded('gd'));
1096             $PAGE->assign('thumbnails_mode', $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE));
1097             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
1098             $PAGE->renderPage('configure');
1099             exit;
1100         }
1101     }
1102
1103     // -------- User wants to rename a tag or delete it
1104     if ($targetPage == Router::$PAGE_CHANGETAG) {
1105         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1106             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
1107             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
1108             $PAGE->renderPage('changetag');
1109             exit;
1110         }
1111
1112         if (!$sessionManager->checkToken($_POST['token'])) {
1113             die(t('Wrong token.'));
1114         }
1115
1116         $toTag = isset($_POST['totag']) ? escape($_POST['totag']) : null;
1117         $fromTag = escape($_POST['fromtag']);
1118         $count = 0;
1119         $bookmarks = $bookmarkService->search(['searchtags' => $fromTag], BookmarkFilter::$ALL, true);
1120         foreach ($bookmarks as $bookmark) {
1121             if ($toTag) {
1122                 $bookmark->renameTag($fromTag, $toTag);
1123             } else {
1124                 $bookmark->deleteTag($fromTag);
1125             }
1126             $bookmarkService->set($bookmark, false);
1127             $history->updateLink($bookmark);
1128             $count++;
1129         }
1130         $bookmarkService->save();
1131         $delete = empty($_POST['totag']);
1132         $redirect = $delete ? 'do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
1133         $alert = $delete
1134             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d bookmarks.', $count), $count)
1135             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d bookmarks.', $count), $count);
1136         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
1137         exit;
1138     }
1139
1140     // -------- User wants to add a link without using the bookmarklet: Show form.
1141     if ($targetPage == Router::$PAGE_ADDLINK) {
1142         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
1143         $PAGE->renderPage('addlink');
1144         exit;
1145     }
1146
1147     // -------- User clicked the "Save" button when editing a link: Save link to database.
1148     if (isset($_POST['save_edit'])) {
1149         // Go away!
1150         if (! $sessionManager->checkToken($_POST['token'])) {
1151             die(t('Wrong token.'));
1152         }
1153
1154         // lf_id should only be present if the link exists.
1155         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : null;
1156         if ($id && $bookmarkService->exists($id)) {
1157             // Edit
1158             $bookmark = $bookmarkService->get($id);
1159         } else {
1160             // New link
1161             $bookmark = new Bookmark();
1162         }
1163
1164         $bookmark->setTitle($_POST['lf_title']);
1165         $bookmark->setDescription($_POST['lf_description']);
1166         $bookmark->setUrl($_POST['lf_url'], $conf->get('security.allowed_protocols'));
1167         $bookmark->setPrivate(isset($_POST['lf_private']));
1168         $bookmark->setTagsString($_POST['lf_tags']);
1169
1170         if ($conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
1171             && ! $bookmark->isNote()
1172         ) {
1173             $thumbnailer = new Thumbnailer($conf);
1174             $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1175         }
1176         $bookmarkService->addOrSet($bookmark, false);
1177
1178         // To preserve backward compatibility with 3rd parties, plugins still use arrays
1179         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1180         $formatter = $factory->getFormatter('raw');
1181         $data = $formatter->format($bookmark);
1182         $pluginManager->executeHooks('save_link', $data);
1183
1184         $bookmark->fromArray($data);
1185         $bookmarkService->set($bookmark);
1186
1187         // If we are called from the bookmarklet, we must close the popup:
1188         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1189             echo '<script>self.close();</script>';
1190             exit;
1191         }
1192
1193         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1194         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1195         // Scroll to the link which has been edited.
1196         $location .= '#' . $bookmark->getShortUrl();
1197         // After saving the link, redirect to the page the user was on.
1198         header('Location: '. $location);
1199         exit;
1200     }
1201
1202     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1203     if ($targetPage == Router::$PAGE_DELETELINK) {
1204         if (! $sessionManager->checkToken($_GET['token'])) {
1205             die(t('Wrong token.'));
1206         }
1207
1208         $ids = trim($_GET['lf_linkdate']);
1209         if (strpos($ids, ' ') !== false) {
1210             // multiple, space-separated ids provided
1211             $ids = array_values(array_filter(
1212                 preg_split('/\s+/', escape($ids)),
1213                 function ($item) {
1214                     return $item !== '';
1215                 }
1216             ));
1217         } else {
1218             // only a single id provided
1219             $shortUrl = $bookmarkService->get($ids)->getShortUrl();
1220             $ids = [$ids];
1221         }
1222         // assert at least one id is given
1223         if (!count($ids)) {
1224             die('no id provided');
1225         }
1226         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1227         $formatter = $factory->getFormatter('raw');
1228         foreach ($ids as $id) {
1229             $id = (int) escape($id);
1230             $bookmark = $bookmarkService->get($id);
1231             $data = $formatter->format($bookmark);
1232             $pluginManager->executeHooks('delete_link', $data);
1233             $bookmarkService->remove($bookmark, false);
1234         }
1235         $bookmarkService->save();
1236
1237         // If we are called from the bookmarklet, we must close the popup:
1238         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1239             echo '<script>self.close();</script>';
1240             exit;
1241         }
1242
1243         $location = '?';
1244         if (isset($_SERVER['HTTP_REFERER'])) {
1245             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
1246             $location = generateLocation(
1247                 $_SERVER['HTTP_REFERER'],
1248                 $_SERVER['HTTP_HOST'],
1249                 ['delete_link', 'edit_link', ! empty($shortUrl) ? $shortUrl : null]
1250             );
1251         }
1252
1253         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1254         exit;
1255     }
1256
1257     // -------- User clicked either "Set public" or "Set private" bulk operation
1258     if ($targetPage == Router::$PAGE_CHANGE_VISIBILITY) {
1259         if (! $sessionManager->checkToken($_GET['token'])) {
1260             die(t('Wrong token.'));
1261         }
1262
1263         $ids = trim($_GET['ids']);
1264         if (strpos($ids, ' ') !== false) {
1265             // multiple, space-separated ids provided
1266             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
1267         } else {
1268             // only a single id provided
1269             $ids = [$ids];
1270         }
1271
1272         // assert at least one id is given
1273         if (!count($ids)) {
1274             die('no id provided');
1275         }
1276         // assert that the visibility is valid
1277         if (!isset($_GET['newVisibility']) || !in_array($_GET['newVisibility'], ['public', 'private'])) {
1278             die('invalid visibility');
1279         } else {
1280             $private = $_GET['newVisibility'] === 'private';
1281         }
1282         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1283         $formatter = $factory->getFormatter('raw');
1284         foreach ($ids as $id) {
1285             $id = (int) escape($id);
1286             $bookmark = $bookmarkService->get($id);
1287             $bookmark->setPrivate($private);
1288
1289             // To preserve backward compatibility with 3rd parties, plugins still use arrays
1290             $data = $formatter->format($bookmark);
1291             $pluginManager->executeHooks('save_link', $data);
1292             $bookmark->fromArray($data);
1293
1294             $bookmarkService->set($bookmark);
1295         }
1296         $bookmarkService->save();
1297
1298         $location = '?';
1299         if (isset($_SERVER['HTTP_REFERER'])) {
1300             $location = generateLocation(
1301                 $_SERVER['HTTP_REFERER'],
1302                 $_SERVER['HTTP_HOST']
1303             );
1304         }
1305         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1306         exit;
1307     }
1308
1309     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1310     if (isset($_GET['edit_link'])) {
1311         $id = (int) escape($_GET['edit_link']);
1312         try {
1313             $link = $bookmarkService->get($id);  // Read database
1314         } catch (BookmarkNotFoundException $e) {
1315             // Link not found in database.
1316             header('Location: ?');
1317             exit;
1318         }
1319
1320         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1321         $formatter = $factory->getFormatter('raw');
1322         $formattedLink = $formatter->format($link);
1323         $tags = $bookmarkService->bookmarksCountPerTag();
1324         if ($conf->get('formatter') === 'markdown') {
1325             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1326         }
1327         $data = array(
1328             'link' => $formattedLink,
1329             'link_is_new' => false,
1330             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1331             'tags' => $tags,
1332         );
1333         $pluginManager->executeHooks('render_editlink', $data);
1334
1335         foreach ($data as $key => $value) {
1336             $PAGE->assign($key, $value);
1337         }
1338
1339         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1340         $PAGE->renderPage('editlink');
1341         exit;
1342     }
1343
1344     // -------- User want to post a new link: Display link edit form.
1345     if (isset($_GET['post'])) {
1346         $url = cleanup_url($_GET['post']);
1347
1348         $link_is_new = false;
1349         // Check if URL is not already in database (in this case, we will edit the existing link)
1350         $bookmark = $bookmarkService->findByUrl($url);
1351         if (! $bookmark) {
1352             $link_is_new = true;
1353             // Get title if it was provided in URL (by the bookmarklet).
1354             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1355             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1356             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1357             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1358             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1359
1360             // If this is an HTTP(S) link, we try go get the page to extract
1361             // the title (otherwise we will to straight to the edit form.)
1362             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1363                 $retrieveDescription = $conf->get('general.retrieve_description');
1364                 // Short timeout to keep the application responsive
1365                 // The callback will fill $charset and $title with data from the downloaded page.
1366                 get_http_response(
1367                     $url,
1368                     $conf->get('general.download_timeout', 30),
1369                     $conf->get('general.download_max_size', 4194304),
1370                     get_curl_download_callback($charset, $title, $description, $tags, $retrieveDescription)
1371                 );
1372                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1373                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1374                 }
1375             }
1376
1377             if ($url == '') {
1378                 $title = $conf->get('general.default_note_title', t('Note: '));
1379             }
1380             $url = escape($url);
1381             $title = escape($title);
1382
1383             $link = [
1384                 'title' => $title,
1385                 'url' => $url,
1386                 'description' => $description,
1387                 'tags' => $tags,
1388                 'private' => $private,
1389             ];
1390         } else {
1391             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1392             $formatter = $factory->getFormatter('raw');
1393             $link = $formatter->format($bookmark);
1394         }
1395
1396         $tags = $bookmarkService->bookmarksCountPerTag();
1397         if ($conf->get('formatter') === 'markdown') {
1398             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1399         }
1400         $data = [
1401             'link' => $link,
1402             'link_is_new' => $link_is_new,
1403             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1404             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1405             'tags' => $tags,
1406             'default_private_links' => $conf->get('privacy.default_private_links', false),
1407         ];
1408         $pluginManager->executeHooks('render_editlink', $data);
1409
1410         foreach ($data as $key => $value) {
1411             $PAGE->assign($key, $value);
1412         }
1413
1414         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1415         $PAGE->renderPage('editlink');
1416         exit;
1417     }
1418
1419     if ($targetPage == Router::$PAGE_PINLINK) {
1420         if (! isset($_GET['id']) || !$bookmarkService->exists($_GET['id'])) {
1421             // FIXME! Use a proper error system.
1422             $msg = t('Invalid link ID provided');
1423             echo '<script>alert("'. $msg .'");document.location=\''. index_url($_SERVER) .'\';</script>';
1424             exit;
1425         }
1426         if (! $sessionManager->checkToken($_GET['token'])) {
1427             die('Wrong token.');
1428         }
1429
1430         $link = $bookmarkService->get($_GET['id']);
1431         $link->setSticky(! $link->isSticky());
1432         $bookmarkService->set($link);
1433         header('Location: '.index_url($_SERVER));
1434         exit;
1435     }
1436
1437     if ($targetPage == Router::$PAGE_EXPORT) {
1438         // Export bookmarks as a Netscape Bookmarks file
1439
1440         if (empty($_GET['selection'])) {
1441             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1442             $PAGE->renderPage('export');
1443             exit;
1444         }
1445
1446         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1447         $selection = $_GET['selection'];
1448         if (isset($_GET['prepend_note_url'])) {
1449             $prependNoteUrl = $_GET['prepend_note_url'];
1450         } else {
1451             $prependNoteUrl = false;
1452         }
1453
1454         try {
1455             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1456             $formatter = $factory->getFormatter('raw');
1457             $PAGE->assign(
1458                 'links',
1459                 NetscapeBookmarkUtils::filterAndFormat(
1460                     $bookmarkService,
1461                     $formatter,
1462                     $selection,
1463                     $prependNoteUrl,
1464                     index_url($_SERVER)
1465                 )
1466             );
1467         } catch (Exception $exc) {
1468             header('Content-Type: text/plain; charset=utf-8');
1469             echo $exc->getMessage();
1470             exit;
1471         }
1472         $now = new DateTime();
1473         header('Content-Type: text/html; charset=utf-8');
1474         header(
1475             'Content-disposition: attachment; filename=bookmarks_'
1476             .$selection.'_'.$now->format(Bookmark::LINK_DATE_FORMAT).'.html'
1477         );
1478         $PAGE->assign('date', $now->format(DateTime::RFC822));
1479         $PAGE->assign('eol', PHP_EOL);
1480         $PAGE->assign('selection', $selection);
1481         $PAGE->renderPage('export.bookmarks');
1482         exit;
1483     }
1484
1485     if ($targetPage == Router::$PAGE_IMPORT) {
1486         // Upload a Netscape bookmark dump to import its contents
1487
1488         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1489             // Show import dialog
1490             $PAGE->assign(
1491                 'maxfilesize',
1492                 get_max_upload_size(
1493                     ini_get('post_max_size'),
1494                     ini_get('upload_max_filesize'),
1495                     false
1496                 )
1497             );
1498             $PAGE->assign(
1499                 'maxfilesizeHuman',
1500                 get_max_upload_size(
1501                     ini_get('post_max_size'),
1502                     ini_get('upload_max_filesize'),
1503                     true
1504                 )
1505             );
1506             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1507             $PAGE->renderPage('import');
1508             exit;
1509         }
1510
1511         // Import bookmarks from an uploaded file
1512         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1513             // The file is too big or some form field may be missing.
1514             $msg = sprintf(
1515                 t(
1516                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1517                     .' (%s). Please upload in smaller chunks.'
1518                 ),
1519                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1520             );
1521             echo '<script>alert("'. $msg .'");document.location=\'?do='.Router::$PAGE_IMPORT .'\';</script>';
1522             exit;
1523         }
1524         if (! $sessionManager->checkToken($_POST['token'])) {
1525             die('Wrong token.');
1526         }
1527         $status = NetscapeBookmarkUtils::import(
1528             $_POST,
1529             $_FILES,
1530             $bookmarkService,
1531             $conf,
1532             $history
1533         );
1534         echo '<script>alert("'.$status.'");document.location=\'?do='
1535              .Router::$PAGE_IMPORT .'\';</script>';
1536         exit;
1537     }
1538
1539     // Plugin administration page
1540     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1541         $pluginMeta = $pluginManager->getPluginsMeta();
1542
1543         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1544         $enabledPlugins = array_filter($pluginMeta, function ($v) {
1545             return $v['order'] !== false;
1546         });
1547         // Load parameters.
1548         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1549         uasort(
1550             $enabledPlugins,
1551             function ($a, $b) {
1552                 return $a['order'] - $b['order'];
1553             }
1554         );
1555         $disabledPlugins = array_filter($pluginMeta, function ($v) {
1556             return $v['order'] === false;
1557         });
1558
1559         $PAGE->assign('enabledPlugins', $enabledPlugins);
1560         $PAGE->assign('disabledPlugins', $disabledPlugins);
1561         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1562         $PAGE->renderPage('pluginsadmin');
1563         exit;
1564     }
1565
1566     // Plugin administration form action
1567     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1568         try {
1569             if (isset($_POST['parameters_form'])) {
1570                 $pluginManager->executeHooks('save_plugin_parameters', $_POST);
1571                 unset($_POST['parameters_form']);
1572                 foreach ($_POST as $param => $value) {
1573                     $conf->set('plugins.'. $param, escape($value));
1574                 }
1575             } else {
1576                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1577             }
1578             $conf->write($loginManager->isLoggedIn());
1579             $history->updateSettings();
1580         } catch (Exception $e) {
1581             error_log(
1582                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1583                 $e->getMessage()
1584             );
1585
1586             // TODO: do not handle exceptions/errors in JS.
1587             echo '<script>alert("'
1588                 . $e->getMessage()
1589                 .'");document.location=\'?do='
1590                 . Router::$PAGE_PLUGINSADMIN
1591                 .'\';</script>';
1592             exit;
1593         }
1594         header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1595         exit;
1596     }
1597
1598     // Get a fresh token
1599     if ($targetPage == Router::$GET_TOKEN) {
1600         header('Content-Type:text/plain');
1601         echo $sessionManager->generateToken();
1602         exit;
1603     }
1604
1605     // -------- Thumbnails Update
1606     if ($targetPage == Router::$PAGE_THUMBS_UPDATE) {
1607         $ids = [];
1608         foreach ($bookmarkService->search() as $bookmark) {
1609             // A note or not HTTP(S)
1610             if ($bookmark->isNote() || ! startsWith(strtolower($bookmark->getUrl()), 'http')) {
1611                 continue;
1612             }
1613             $ids[] = $bookmark->getId();
1614         }
1615         $PAGE->assign('ids', $ids);
1616         $PAGE->assign('pagetitle', t('Thumbnails update') .' - '. $conf->get('general.title', 'Shaarli'));
1617         $PAGE->renderPage('thumbnails');
1618         exit;
1619     }
1620
1621     // -------- Single Thumbnail Update
1622     if ($targetPage == Router::$AJAX_THUMB_UPDATE) {
1623         if (! isset($_POST['id']) || ! ctype_digit($_POST['id'])) {
1624             http_response_code(400);
1625             exit;
1626         }
1627         $id = (int) $_POST['id'];
1628         if (! $bookmarkService->exists($id)) {
1629             http_response_code(404);
1630             exit;
1631         }
1632         $thumbnailer = new Thumbnailer($conf);
1633         $bookmark = $bookmarkService->get($id);
1634         $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1635         $bookmarkService->set($bookmark);
1636
1637         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1638         echo json_encode($factory->getFormatter('raw')->format($bookmark));
1639         exit;
1640     }
1641
1642     // -------- Otherwise, simply display search form and bookmarks:
1643     showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
1644     exit;
1645 }
1646
1647 /**
1648  * Template for the list of bookmarks (<div id="linklist">)
1649  * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1650  *
1651  * @param pageBuilder              $PAGE          pageBuilder instance.
1652  * @param BookmarkServiceInterface $linkDb        LinkDB instance.
1653  * @param ConfigManager            $conf          Configuration Manager instance.
1654  * @param PluginManager            $pluginManager Plugin Manager instance.
1655  * @param LoginManager             $loginManager  LoginManager instance
1656  */
1657 function buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
1658 {
1659     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1660     $formatter = $factory->getFormatter();
1661
1662     // Used in templates
1663     if (isset($_GET['searchtags'])) {
1664         if (! empty($_GET['searchtags'])) {
1665             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1666         } else {
1667             $searchtags = false;
1668         }
1669     } else {
1670         $searchtags = '';
1671     }
1672     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1673
1674     // Smallhash filter
1675     if (! empty($_SERVER['QUERY_STRING'])
1676         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1677         try {
1678             $linksToDisplay = $linkDb->findByHash($_SERVER['QUERY_STRING']);
1679         } catch (BookmarkNotFoundException $e) {
1680             $PAGE->render404($e->getMessage());
1681             exit;
1682         }
1683     } else {
1684         // Filter bookmarks according search parameters.
1685         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : null;
1686         $request = [
1687             'searchtags' => $searchtags,
1688             'searchterm' => $searchterm,
1689         ];
1690         $linksToDisplay = $linkDb->search($request, $visibility, false, !empty($_SESSION['untaggedonly']));
1691     }
1692
1693     // ---- Handle paging.
1694     $keys = array();
1695     foreach ($linksToDisplay as $key => $value) {
1696         $keys[] = $key;
1697     }
1698
1699     // Select articles according to paging.
1700     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1701     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1702     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1703     $page = $page < 1 ? 1 : $page;
1704     $page = $page > $pagecount ? $pagecount : $page;
1705     // Start index.
1706     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1707     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1708
1709     $thumbnailsEnabled = $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE;
1710     if ($thumbnailsEnabled) {
1711         $thumbnailer = new Thumbnailer($conf);
1712     }
1713
1714     $linkDisp = array();
1715     while ($i<$end && $i<count($keys)) {
1716         $link = $formatter->format($linksToDisplay[$keys[$i]]);
1717
1718         // Logged in, thumbnails enabled, not a note,
1719         // and (never retrieved yet or no valid cache file)
1720         if ($loginManager->isLoggedIn()
1721             && $thumbnailsEnabled
1722             && !$linksToDisplay[$keys[$i]]->isNote()
1723             && $linksToDisplay[$keys[$i]]->getThumbnail() !== false
1724             && ! is_file($linksToDisplay[$keys[$i]]->getThumbnail())
1725         ) {
1726             $linksToDisplay[$keys[$i]]->setThumbnail($thumbnailer->get($link['url']));
1727             $linkDb->set($linksToDisplay[$keys[$i]], false);
1728             $updateDB = true;
1729             $link['thumbnail'] = $linksToDisplay[$keys[$i]]->getThumbnail();
1730         }
1731
1732         // Check for both signs of a note: starting with ? and 7 chars long.
1733 //        if ($link['url'][0] === '?' && strlen($link['url']) === 7) {
1734 //            $link['url'] = index_url($_SERVER) . $link['url'];
1735 //        }
1736
1737         $linkDisp[$keys[$i]] = $link;
1738         $i++;
1739     }
1740
1741     // If we retrieved new thumbnails, we update the database.
1742     if (!empty($updateDB)) {
1743         $linkDb->save();
1744     }
1745
1746     // Compute paging navigation
1747     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1748     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1749     $previous_page_url = '';
1750     if ($i != count($keys)) {
1751         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1752     }
1753     $next_page_url='';
1754     if ($page>1) {
1755         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1756     }
1757
1758     // Fill all template fields.
1759     $data = array(
1760         'previous_page_url' => $previous_page_url,
1761         'next_page_url' => $next_page_url,
1762         'page_current' => $page,
1763         'page_max' => $pagecount,
1764         'result_count' => count($linksToDisplay),
1765         'search_term' => $searchterm,
1766         'search_tags' => $searchtags,
1767         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1768         'links' => $linkDisp,
1769     );
1770
1771     // If there is only a single link, we change on-the-fly the title of the page.
1772     if (count($linksToDisplay) == 1) {
1773         $data['pagetitle'] = $linksToDisplay[$keys[0]]->getTitle() .' - '. $conf->get('general.title');
1774     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1775         $data['pagetitle'] = t('Search: ');
1776         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1777         $bracketWrap = function ($tag) {
1778             return '['. $tag .']';
1779         };
1780         $data['pagetitle'] .= ! empty($searchtags)
1781             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1782             : '';
1783         $data['pagetitle'] .= '- '. $conf->get('general.title');
1784     }
1785
1786     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1787
1788     foreach ($data as $key => $value) {
1789         $PAGE->assign($key, $value);
1790     }
1791
1792     return;
1793 }
1794
1795 /**
1796  * Installation
1797  * This function should NEVER be called if the file data/config.php exists.
1798  *
1799  * @param ConfigManager  $conf           Configuration Manager instance.
1800  * @param SessionManager $sessionManager SessionManager instance
1801  * @param LoginManager   $loginManager   LoginManager instance
1802  */
1803 function install($conf, $sessionManager, $loginManager)
1804 {
1805     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1806     if (endsWith($_SERVER['HTTP_HOST'], '.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) {
1807         mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions', 0705);
1808     }
1809
1810
1811     // This part makes sure sessions works correctly.
1812     // (Because on some hosts, session.save_path may not be set correctly,
1813     // or we may not have write access to it.)
1814     if (isset($_GET['test_session'])
1815         && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working')) {
1816         // Step 2: Check if data in session is correct.
1817         $msg = t(
1818             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1819             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1820             'and that you have write access to it.<br>'.
1821             'It currently points to %s.<br>'.
1822             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1823             'or any custom hostname without a dot causes cookie storage to fail. '.
1824             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1825         );
1826         $msg = sprintf($msg, session_save_path());
1827         echo $msg;
1828         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1829         die;
1830     }
1831     if (!isset($_SESSION['session_tested'])) {
1832         // Step 1 : Try to store data in session and reload page.
1833         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1834         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1835     }
1836     if (isset($_GET['test_session'])) {
1837         // Step 3: Sessions are OK. Remove test parameter from URL.
1838         header('Location: '.index_url($_SERVER));
1839     }
1840
1841
1842     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) {
1843         $tz = 'UTC';
1844         if (!empty($_POST['continent']) && !empty($_POST['city'])
1845             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1846         ) {
1847             $tz = $_POST['continent'].'/'.$_POST['city'];
1848         }
1849         $conf->set('general.timezone', $tz);
1850         $login = $_POST['setlogin'];
1851         $conf->set('credentials.login', $login);
1852         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1853         $conf->set('credentials.salt', $salt);
1854         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1855         if (!empty($_POST['title'])) {
1856             $conf->set('general.title', escape($_POST['title']));
1857         } else {
1858             $conf->set('general.title', 'Shared bookmarks on '.escape(index_url($_SERVER)));
1859         }
1860         $conf->set('translation.language', escape($_POST['language']));
1861         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1862         $conf->set('api.enabled', !empty($_POST['enableApi']));
1863         $conf->set(
1864             'api.secret',
1865             generate_api_secret(
1866                 $conf->get('credentials.login'),
1867                 $conf->get('credentials.salt')
1868             )
1869         );
1870         try {
1871             // Everything is ok, let's create config file.
1872             $conf->write($loginManager->isLoggedIn());
1873         } catch (Exception $e) {
1874             error_log(
1875                 'ERROR while writing config file after installation.' . PHP_EOL .
1876                     $e->getMessage()
1877             );
1878
1879             // TODO: do not handle exceptions/errors in JS.
1880             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1881             exit;
1882         }
1883
1884         $history = new History($conf->get('resource.history'));
1885         $bookmarkService = new BookmarkFileService($conf, $history, true);
1886         if ($bookmarkService->count() === 0) {
1887             $bookmarkService->initialize();
1888         }
1889
1890         echo '<script>alert('
1891             .'"Shaarli is now configured. '
1892             .'Please enter your login/password and start shaaring your bookmarks!"'
1893             .');document.location=\'?do=login\';</script>';
1894         exit;
1895     }
1896
1897     $PAGE = new PageBuilder($conf, $_SESSION, null, $sessionManager->generateToken());
1898     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1899     $PAGE->assign('continents', $continents);
1900     $PAGE->assign('cities', $cities);
1901     $PAGE->assign('languages', Languages::getAvailableLanguages());
1902     $PAGE->renderPage('install');
1903     exit;
1904 }
1905
1906 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
1907     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
1908 }
1909
1910 try {
1911     $history = new History($conf->get('resource.history'));
1912 } catch (Exception $e) {
1913     die($e->getMessage());
1914 }
1915
1916 $linkDb = new BookmarkFileService($conf, $history, $loginManager->isLoggedIn());
1917
1918 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) {
1919     showDailyRSS($linkDb, $conf, $loginManager);
1920     exit;
1921 }
1922
1923 $containerBuilder = new ContainerBuilder($conf, $sessionManager, $loginManager);
1924 $container = $containerBuilder->build();
1925 $app = new App($container);
1926
1927 // REST API routes
1928 $app->group('/api/v1', function () {
1929     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
1930     $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
1931     $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
1932     $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
1933     $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
1934     $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
1935
1936     $this->get('/tags', '\Shaarli\Api\Controllers\Tags:getTags')->setName('getTags');
1937     $this->get('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:getTag')->setName('getTag');
1938     $this->put('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:putTag')->setName('putTag');
1939     $this->delete('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:deleteTag')->setName('deleteTag');
1940
1941     $this->get('/history', '\Shaarli\Api\Controllers\HistoryController:getHistory')->setName('getHistory');
1942 })->add('\Shaarli\Api\ApiMiddleware');
1943
1944 $app->group('', function () {
1945     $this->get('/login', '\Shaarli\Front\Controller\LoginController:index')->setName('login');
1946 })->add('\Shaarli\Front\ShaarliMiddleware');
1947
1948 $response = $app->run(true);
1949
1950 // Hack to make Slim and Shaarli router work together:
1951 // If a Slim route isn't found and NOT API call, we call renderPage().
1952 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
1953     // We use UTF-8 for proper international characters handling.
1954     header('Content-Type: text/html; charset=utf-8');
1955     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
1956 } else {
1957     $response = $response
1958         ->withHeader('Access-Control-Allow-Origin', '*')
1959         ->withHeader(
1960             'Access-Control-Allow-Headers',
1961             'X-Requested-With, Content-Type, Accept, Origin, Authorization'
1962         )
1963         ->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
1964     $app->respond($response);
1965 }