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\BookmarkServiceInterface;
  66 use \Shaarli\Bookmark\Exception\BookmarkNotFoundException;
  67 use Shaarli\Bookmark\Bookmark;
  68 use Shaarli\Bookmark\BookmarkFilter;
  69 use Shaarli\Bookmark\BookmarkFileService;
  70 use \Shaarli\Config\ConfigManager;
  71 use \Shaarli\Feed\CachedPage;
  72 use \Shaarli\Feed\FeedBuilder;
  73 use Shaarli\Formatter\BookmarkMarkdownFormatter;
  74 use Shaarli\Formatter\FormatterFactory;
  75 use \Shaarli\History;
  76 use \Shaarli\Languages;
  77 use \Shaarli\Netscape\NetscapeBookmarkUtils;
  78 use \Shaarli\Plugin\PluginManager;
  79 use \Shaarli\Render\PageBuilder;
  80 use \Shaarli\Render\ThemeUtils;
  81 use \Shaarli\Router;
  82 use \Shaarli\Security\LoginManager;
  83 use \Shaarli\Security\SessionManager;
  84 use \Shaarli\Thumbnailer;
  85 use \Shaarli\Updater\Updater;
  86 use \Shaarli\Updater\UpdaterUtils;
  87
  88 // Ensure the PHP version is supported
  89 try {
  90     ApplicationUtils::checkPHPVersion('7.1', PHP_VERSION);
  91 } catch (Exception $exc) {
  92     header('Content-Type: text/plain; charset=utf-8');
  93     echo $exc->getMessage();
  94     exit;
  95 }
  96
  97 define('SHAARLI_VERSION', ApplicationUtils::getVersion(__DIR__ .'/'. ApplicationUtils::$VERSION_FILE));
  98
  99 // Force cookie path (but do not change lifetime)
 100 $cookie = session_get_cookie_params();
 101 $cookiedir = '';
 102 if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 103     $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
 104 }
 105 // Set default cookie expiration and path.
 106 session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
 107 // Set session parameters on server side.
 108 // Use cookies to store session.
 109 ini_set('session.use_cookies', 1);
 110 // Force cookies for session (phpsessionID forbidden in URL).
 111 ini_set('session.use_only_cookies', 1);
 112 // Prevent PHP form using sessionID in URL if cookies are disabled.
 113 ini_set('session.use_trans_sid', false);
 114
 115 session_name('shaarli');
 116 // Start session if needed (Some server auto-start sessions).
 117 if (session_status() == PHP_SESSION_NONE) {
 118     session_start();
 119 }
 120
 121 // Regenerate session ID if invalid or not defined in cookie.
 122 if (isset($_COOKIE['shaarli']) && !SessionManager::checkId($_COOKIE['shaarli'])) {
 123     session_regenerate_id(true);
 124     $_COOKIE['shaarli'] = session_id();
 125 }
 126
 127 $conf = new ConfigManager();
 128
 129 // In dev mode, throw exception on any warning
 130 if ($conf->get('dev.debug', false)) {
 131     // See all errors (for debugging only)
 132     error_reporting(-1);
 133
 134     set_error_handler(function($errno, $errstr, $errfile, $errline, array $errcontext) {
 135         throw new ErrorException($errstr, 0, $errno, $errfile, $errline);
 136     });
 137 }
 138
 139 $sessionManager = new SessionManager($_SESSION, $conf);
 140 $loginManager = new LoginManager($conf, $sessionManager);
 141 $loginManager->generateStaySignedInToken($_SERVER['REMOTE_ADDR']);
 142 $clientIpId = client_ip_id($_SERVER);
 143
 144 // LC_MESSAGES isn't defined without php-intl, in this case use LC_COLLATE locale instead.
 145 if (! defined('LC_MESSAGES')) {
 146     define('LC_MESSAGES', LC_COLLATE);
 147 }
 148
 149 // Sniff browser language and set date format accordingly.
 150 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
 151     autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']);
 152 }
 153
 154 new Languages(setlocale(LC_MESSAGES, 0), $conf);
 155
 156 $conf->setEmpty('general.timezone', date_default_timezone_get());
 157 $conf->setEmpty('general.title', t('Shared bookmarks on '). escape(index_url($_SERVER)));
 158 RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl').'/'.$conf->get('resource.theme').'/'; // template directory
 159 RainTPL::$cache_dir = $conf->get('resource.raintpl_tmp'); // cache directory
 160
 161 $pluginManager = new PluginManager($conf);
 162 $pluginManager->load($conf->get('general.enabled_plugins'));
 163
 164 date_default_timezone_set($conf->get('general.timezone', 'UTC'));
 165
 166 ob_start();  // Output buffering for the page cache.
 167
 168 // Prevent caching on client side or proxy: (yes, it's ugly)
 169 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
 170 header("Cache-Control: no-store, no-cache, must-revalidate");
 171 header("Cache-Control: post-check=0, pre-check=0", false);
 172 header("Pragma: no-cache");
 173
 174 if (! is_file($conf->getConfigFileExt())) {
 175     // Ensure Shaarli has proper access to its resources
 176     $errors = ApplicationUtils::checkResourcePermissions($conf);
 177
 178     if ($errors != array()) {
 179         $message = '<p>'. t('Insufficient permissions:') .'</p><ul>';
 180
 181         foreach ($errors as $error) {
 182             $message .= '<li>'.$error.'</li>';
 183         }
 184         $message .= '</ul>';
 185
 186         header('Content-Type: text/html; charset=utf-8');
 187         echo $message;
 188         exit;
 189     }
 190
 191     // Display the installation form if no existing config is found
 192     install($conf, $sessionManager, $loginManager);
 193 }
 194
 195 $loginManager->checkLoginState($_COOKIE, $clientIpId);
 196
 197 /**
 198  * Adapter function to ensure compatibility with third-party templates
 199  *
 200  * @see https://github.com/shaarli/Shaarli/pull/1086
 201  *
 202  * @return bool true when the user is logged in, false otherwise
 203  */
 204 function isLoggedIn()
 205 {
 206     global $loginManager;
 207     return $loginManager->isLoggedIn();
 208 }
 209
 210
 211 // ------------------------------------------------------------------------------------------
 212 // Process login form: Check if login/password is correct.
 213 if (isset($_POST['login'])) {
 214     if (! $loginManager->canLogin($_SERVER)) {
 215         die(t('I said: NO. You are banned for the moment. Go away.'));
 216     }
 217     if (isset($_POST['password'])
 218         && $sessionManager->checkToken($_POST['token'])
 219         && $loginManager->checkCredentials($_SERVER['REMOTE_ADDR'], $clientIpId, $_POST['login'], $_POST['password'])
 220     ) {
 221         $loginManager->handleSuccessfulLogin($_SERVER);
 222
 223         $cookiedir = '';
 224         if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 225             // Note: Never forget the trailing slash on the cookie path!
 226             $cookiedir = dirname($_SERVER["SCRIPT_NAME"]) . '/';
 227         }
 228
 229         if (!empty($_POST['longlastingsession'])) {
 230             // Keep the session cookie even after the browser closes
 231             $sessionManager->setStaySignedIn(true);
 232             $expirationTime = $sessionManager->extendSession();
 233
 234             setcookie(
 235                 $loginManager::$STAY_SIGNED_IN_COOKIE,
 236                 $loginManager->getStaySignedInToken(),
 237                 $expirationTime,
 238                 WEB_PATH
 239             );
 240         } else {
 241             // Standard session expiration (=when browser closes)
 242             $expirationTime = 0;
 243         }
 244
 245         // Send cookie with the new expiration date to the browser
 246         session_destroy();
 247         session_set_cookie_params($expirationTime, $cookiedir, $_SERVER['SERVER_NAME']);
 248         session_start();
 249         session_regenerate_id(true);
 250
 251         // Optional redirect after login:
 252         if (isset($_GET['post'])) {
 253             $uri = '?post='. urlencode($_GET['post']);
 254             foreach (array('description', 'source', 'title', 'tags') as $param) {
 255                 if (!empty($_GET[$param])) {
 256                     $uri .= '&'.$param.'='.urlencode($_GET[$param]);
 257                 }
 258             }
 259             header('Location: '. $uri);
 260             exit;
 261         }
 262
 263         if (isset($_GET['edit_link'])) {
 264             header('Location: ?edit_link='. escape($_GET['edit_link']));
 265             exit;
 266         }
 267
 268         if (isset($_POST['returnurl'])) {
 269             // Prevent loops over login screen.
 270             if (strpos($_POST['returnurl'], 'do=login') === false) {
 271                 header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST']));
 272                 exit;
 273             }
 274         }
 275         header('Location: ?');
 276         exit;
 277     } else {
 278         $loginManager->handleFailedLogin($_SERVER);
 279         $redir = '&username='. urlencode($_POST['login']);
 280         if (isset($_GET['post'])) {
 281             $redir .= '&post=' . urlencode($_GET['post']);
 282             foreach (array('description', 'source', 'title', 'tags') as $param) {
 283                 if (!empty($_GET[$param])) {
 284                     $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
 285                 }
 286             }
 287         }
 288         // Redirect to login screen.
 289         echo '<script>alert("'. t("Wrong login/password.") .'");document.location=\'?do=login'.$redir.'\';</script>';
 290         exit;
 291     }
 292 }
 293
 294 // ------------------------------------------------------------------------------------------
 295 // Token management for XSRF protection
 296 // Token should be used in any form which acts on data (create,update,delete,import...).
 297 if (!isset($_SESSION['tokens'])) {
 298     $_SESSION['tokens']=array();  // Token are attached to the session.
 299 }
 300
 301 /**
 302  * Daily RSS feed: 1 RSS entry per day giving all the bookmarks on that day.
 303  * Gives the last 7 days (which have bookmarks).
 304  * This RSS feed cannot be filtered.
 305  *
 306  * @param BookmarkServiceInterface $bookmarkService
 307  * @param ConfigManager            $conf            Configuration Manager instance
 308  * @param LoginManager             $loginManager    LoginManager instance
 309  */
 310 function showDailyRSS($bookmarkService, $conf, $loginManager)
 311 {
 312     // Cache system
 313     $query = $_SERVER['QUERY_STRING'];
 314     $cache = new CachedPage(
 315         $conf->get('config.PAGE_CACHE'),
 316         page_url($_SERVER),
 317         startsWith($query, 'do=dailyrss') && !$loginManager->isLoggedIn()
 318     );
 319     $cached = $cache->cachedVersion();
 320     if (!empty($cached)) {
 321         echo $cached;
 322         exit;
 323     }
 324
 325     /* Some Shaarlies may have very few bookmarks, so we need to look
 326        back in time until we have enough days ($nb_of_days).
 327     */
 328     $nb_of_days = 7; // We take 7 days.
 329     $today = date('Ymd');
 330     $days = array();
 331
 332     foreach ($bookmarkService->search() as $bookmark) {
 333         $day = $bookmark->getCreated()->format('Ymd'); // Extract day (without time)
 334         if (strcmp($day, $today) < 0) {
 335             if (empty($days[$day])) {
 336                 $days[$day] = array();
 337             }
 338             $days[$day][] = $bookmark;
 339         }
 340
 341         if (count($days) > $nb_of_days) {
 342             break; // Have we collected enough days?
 343         }
 344     }
 345
 346     // Build the RSS feed.
 347     header('Content-Type: application/rss+xml; charset=utf-8');
 348     $pageaddr = escape(index_url($_SERVER));
 349     echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
 350     echo '<channel>';
 351     echo '<title>Daily - '. $conf->get('general.title') . '</title>';
 352     echo '<link>'. $pageaddr .'</link>';
 353     echo '<description>Daily shared bookmarks</description>';
 354     echo '<language>en-en</language>';
 355     echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
 356
 357     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 358     $formatter = $factory->getFormatter();
 359     $formatter->addContextData('index_url', index_url($_SERVER));
 360     // For each day.
 361     /** @var Bookmark[] $bookmarks */
 362     foreach ($days as $day => $bookmarks) {
 363         $formattedBookmarks = [];
 364         $dayDate = DateTime::createFromFormat(Bookmark::LINK_DATE_FORMAT, $day.'_000000');
 365         $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day);  // Absolute URL of the corresponding "Daily" page.
 366
 367         // We pre-format some fields for proper output.
 368         foreach ($bookmarks as $key => $bookmark) {
 369             $formattedBookmarks[$key] = $formatter->format($bookmark);
 370             // This page is a bit specific, we need raw description to calculate the length
 371             $formattedBookmarks[$key]['formatedDescription'] = $formattedBookmarks[$key]['description'];
 372             $formattedBookmarks[$key]['description'] = $bookmark->getDescription();
 373
 374             if ($bookmark->isNote()) {
 375                 $link['url'] = index_url($_SERVER) . $bookmark->getUrl();  // make permalink URL absolute
 376             }
 377         }
 378
 379         // Then build the HTML for this day:
 380         $tpl = new RainTPL();
 381         $tpl->assign('title', $conf->get('general.title'));
 382         $tpl->assign('daydate', $dayDate->getTimestamp());
 383         $tpl->assign('absurl', $absurl);
 384         $tpl->assign('links', $formattedBookmarks);
 385         $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
 386         $tpl->assign('hide_timestamps', $conf->get('privacy.hide_timestamps', false));
 387         $tpl->assign('index_url', $pageaddr);
 388         $html = $tpl->draw('dailyrss', true);
 389
 390         echo $html . PHP_EOL;
 391     }
 392     echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
 393
 394     $cache->cache(ob_get_contents());
 395     ob_end_flush();
 396     exit;
 397 }
 398
 399 /**
 400  * Show the 'Daily' page.
 401  *
 402  * @param PageBuilder              $pageBuilder     Template engine wrapper.
 403  * @param BookmarkServiceInterface $bookmarkService instance.
 404  * @param ConfigManager            $conf            Configuration Manager instance.
 405  * @param PluginManager            $pluginManager   Plugin Manager instance.
 406  * @param LoginManager             $loginManager    Login Manager instance
 407  */
 408 function showDaily($pageBuilder, $bookmarkService, $conf, $pluginManager, $loginManager)
 409 {
 410     if (isset($_GET['day'])) {
 411         $day = $_GET['day'];
 412         if ($day === date('Ymd', strtotime('now'))) {
 413             $pageBuilder->assign('dayDesc', t('Today'));
 414         } elseif ($day === date('Ymd', strtotime('-1 days'))) {
 415             $pageBuilder->assign('dayDesc', t('Yesterday'));
 416         }
 417     } else {
 418         $day = date('Ymd', strtotime('now')); // Today, in format YYYYMMDD.
 419         $pageBuilder->assign('dayDesc', t('Today'));
 420     }
 421
 422     $days = $bookmarkService->days();
 423     $i = array_search($day, $days);
 424     if ($i === false && count($days)) {
 425         // no bookmarks for day, but at least one day with bookmarks
 426         $i = count($days) - 1;
 427         $day = $days[$i];
 428     }
 429     $previousday = '';
 430     $nextday = '';
 431
 432     if ($i !== false) {
 433         if ($i >= 1) {
 434              $previousday = $days[$i - 1];
 435         }
 436         if ($i < count($days) - 1) {
 437             $nextday = $days[$i + 1];
 438         }
 439     }
 440     try {
 441         $linksToDisplay = $bookmarkService->filterDay($day);
 442     } catch (Exception $exc) {
 443         error_log($exc);
 444         $linksToDisplay = [];
 445     }
 446
 447     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 448     $formatter = $factory->getFormatter();
 449     // We pre-format some fields for proper output.
 450     foreach ($linksToDisplay as $key => $bookmark) {
 451         $linksToDisplay[$key] = $formatter->format($bookmark);
 452         // This page is a bit specific, we need raw description to calculate the length
 453         $linksToDisplay[$key]['formatedDescription'] = $linksToDisplay[$key]['description'];
 454         $linksToDisplay[$key]['description'] = $bookmark->getDescription();
 455     }
 456
 457     $dayDate = DateTime::createFromFormat(Bookmark::LINK_DATE_FORMAT, $day.'_000000');
 458     $data = array(
 459         'pagetitle' => $conf->get('general.title') .' - '. format_date($dayDate, false),
 460         'linksToDisplay' => $linksToDisplay,
 461         'day' => $dayDate->getTimestamp(),
 462         'dayDate' => $dayDate,
 463         'previousday' => $previousday,
 464         'nextday' => $nextday,
 465     );
 466
 467     /* Hook is called before column construction so that plugins don't have
 468        to deal with columns. */
 469     $pluginManager->executeHooks('render_daily', $data, array('loggedin' => $loginManager->isLoggedIn()));
 470
 471     /* We need to spread the articles on 3 columns.
 472        I did not want to use a JavaScript lib like http://masonry.desandro.com/
 473        so I manually spread entries with a simple method: I roughly evaluate the
 474        height of a div according to title and description length.
 475     */
 476     $columns = array(array(), array(), array()); // Entries to display, for each column.
 477     $fill = array(0, 0, 0);  // Rough estimate of columns fill.
 478     foreach ($data['linksToDisplay'] as $key => $bookmark) {
 479         // Roughly estimate length of entry (by counting characters)
 480         // Title: 30 chars = 1 line. 1 line is 30 pixels height.
 481         // Description: 836 characters gives roughly 342 pixel height.
 482         // This is not perfect, but it's usually OK.
 483         $length = strlen($bookmark['title']) + (342 * strlen($bookmark['description'])) / 836;
 484         if (! empty($bookmark['thumbnail'])) {
 485             $length += 100; // 1 thumbnails roughly takes 100 pixels height.
 486         }
 487         // Then put in column which is the less filled:
 488         $smallest = min($fill); // find smallest value in array.
 489         $index = array_search($smallest, $fill); // find index of this smallest value.
 490         array_push($columns[$index], $bookmark); // Put entry in this column.
 491         $fill[$index] += $length;
 492     }
 493
 494     $data['cols'] = $columns;
 495
 496     foreach ($data as $key => $value) {
 497         $pageBuilder->assign($key, $value);
 498     }
 499
 500     $pageBuilder->assign('pagetitle', t('Daily') .' - '. $conf->get('general.title', 'Shaarli'));
 501     $pageBuilder->renderPage('daily');
 502     exit;
 503 }
 504
 505 /**
 506  * Renders the linklist
 507  *
 508  * @param pageBuilder              $PAGE          pageBuilder instance.
 509  * @param BookmarkServiceInterface $linkDb        instance.
 510  * @param ConfigManager            $conf          Configuration Manager instance.
 511  * @param PluginManager            $pluginManager Plugin Manager instance.
 512  */
 513 function showLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
 514 {
 515     buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager);
 516     $PAGE->renderPage('linklist');
 517 }
 518
 519 /**
 520  * Render HTML page (according to URL parameters and user rights)
 521  *
 522  * @param ConfigManager            $conf           Configuration Manager instance.
 523  * @param PluginManager            $pluginManager  Plugin Manager instance,
 524  * @param BookmarkServiceInterface $bookmarkService
 525  * @param History                  $history        instance
 526  * @param SessionManager           $sessionManager SessionManager instance
 527  * @param LoginManager             $loginManager   LoginManager instance
 528  */
 529 function renderPage($conf, $pluginManager, $bookmarkService, $history, $sessionManager, $loginManager)
 530 {
 531     $updater = new Updater(
 532         UpdaterUtils::read_updates_file($conf->get('resource.updates')),
 533         $bookmarkService,
 534         $conf,
 535         $loginManager->isLoggedIn()
 536     );
 537     try {
 538         $newUpdates = $updater->update();
 539         if (! empty($newUpdates)) {
 540             UpdaterUtils::write_updates_file(
 541                 $conf->get('resource.updates'),
 542                 $updater->getDoneUpdates()
 543             );
 544         }
 545     } catch (Exception $e) {
 546         die($e->getMessage());
 547     }
 548
 549     $PAGE = new PageBuilder($conf, $_SESSION, $bookmarkService, $sessionManager->generateToken(), $loginManager->isLoggedIn());
 550     $PAGE->assign('linkcount', $bookmarkService->count(BookmarkFilter::$ALL));
 551     $PAGE->assign('privateLinkcount', $bookmarkService->count(BookmarkFilter::$PRIVATE));
 552     $PAGE->assign('plugin_errors', $pluginManager->getErrors());
 553
 554     // Determine which page will be rendered.
 555     $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
 556     $targetPage = Router::findPage($query, $_GET, $loginManager->isLoggedIn());
 557
 558     if (// if the user isn't logged in
 559         !$loginManager->isLoggedIn() &&
 560         // and Shaarli doesn't have public content...
 561         $conf->get('privacy.hide_public_links') &&
 562         // and is configured to enforce the login
 563         $conf->get('privacy.force_login') &&
 564         // and the current page isn't already the login page
 565         $targetPage !== Router::$PAGE_LOGIN &&
 566         // and the user is not requesting a feed (which would lead to a different content-type as expected)
 567         $targetPage !== Router::$PAGE_FEED_ATOM &&
 568         $targetPage !== Router::$PAGE_FEED_RSS
 569     ) {
 570         // force current page to be the login page
 571         $targetPage = Router::$PAGE_LOGIN;
 572     }
 573
 574     // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
 575     // Then assign generated data to RainTPL.
 576     $common_hooks = array(
 577         'includes',
 578         'header',
 579         'footer',
 580     );
 581
 582     foreach ($common_hooks as $name) {
 583         $plugin_data = array();
 584         $pluginManager->executeHooks(
 585             'render_' . $name,
 586             $plugin_data,
 587             array(
 588                 'target' => $targetPage,
 589                 'loggedin' => $loginManager->isLoggedIn()
 590             )
 591         );
 592         $PAGE->assign('plugins_' . $name, $plugin_data);
 593     }
 594
 595     // -------- Display login form.
 596     if ($targetPage == Router::$PAGE_LOGIN) {
 597         if ($conf->get('security.open_shaarli')) {
 598             header('Location: ?');
 599             exit;
 600         }  // No need to login for open Shaarli
 601         if (isset($_GET['username'])) {
 602             $PAGE->assign('username', escape($_GET['username']));
 603         }
 604         $PAGE->assign('returnurl', (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
 605         // add default state of the 'remember me' checkbox
 606         $PAGE->assign('remember_user_default', $conf->get('privacy.remember_user_default'));
 607         $PAGE->assign('user_can_login', $loginManager->canLogin($_SERVER));
 608         $PAGE->assign('pagetitle', t('Login') .' - '. $conf->get('general.title', 'Shaarli'));
 609         $PAGE->renderPage('loginform');
 610         exit;
 611     }
 612     // -------- User wants to logout.
 613     if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout')) {
 614         invalidateCaches($conf->get('resource.page_cache'));
 615         $sessionManager->logout();
 616         setcookie(LoginManager::$STAY_SIGNED_IN_COOKIE, 'false', 0, WEB_PATH);
 617         header('Location: ?');
 618         exit;
 619     }
 620
 621     // -------- Picture wall
 622     if ($targetPage == Router::$PAGE_PICWALL) {
 623         $PAGE->assign('pagetitle', t('Picture wall') .' - '. $conf->get('general.title', 'Shaarli'));
 624         if (! $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) === Thumbnailer::MODE_NONE) {
 625             $PAGE->assign('linksToDisplay', []);
 626             $PAGE->renderPage('picwall');
 627             exit;
 628         }
 629
 630         // Optionally filter the results:
 631         $links = $bookmarkService->search($_GET);
 632         $linksToDisplay = [];
 633
 634         // Get only bookmarks which have a thumbnail.
 635         // Note: we do not retrieve thumbnails here, the request is too heavy.
 636         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 637         $formatter = $factory->getFormatter();
 638         foreach ($links as $key => $link) {
 639             if ($link->getThumbnail() !== false) {
 640                 $linksToDisplay[] = $formatter->format($link);
 641             }
 642         }
 643
 644         $data = [
 645             'linksToDisplay' => $linksToDisplay,
 646         ];
 647         $pluginManager->executeHooks('render_picwall', $data, ['loggedin' => $loginManager->isLoggedIn()]);
 648
 649         foreach ($data as $key => $value) {
 650             $PAGE->assign($key, $value);
 651         }
 652
 653         $PAGE->renderPage('picwall');
 654         exit;
 655     }
 656
 657     // -------- Tag cloud
 658     if ($targetPage == Router::$PAGE_TAGCLOUD) {
 659         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 660         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 661         $tags = $bookmarkService->bookmarksCountPerTag($filteringTags, $visibility);
 662
 663         // We sort tags alphabetically, then choose a font size according to count.
 664         // First, find max value.
 665         $maxcount = 0;
 666         foreach ($tags as $value) {
 667             $maxcount = max($maxcount, $value);
 668         }
 669
 670         alphabetical_sort($tags, false, true);
 671
 672         $tagList = array();
 673         foreach ($tags as $key => $value) {
 674             if (in_array($key, $filteringTags)) {
 675                 continue;
 676             }
 677             // Tag font size scaling:
 678             //   default 15 and 30 logarithm bases affect scaling,
 679             //   22 and 6 are arbitrary font sizes for max and min sizes.
 680             $size = log($value, 15) / log($maxcount, 30) * 2.2 + 0.8;
 681             $tagList[$key] = array(
 682                 'count' => $value,
 683                 'size' => number_format($size, 2, '.', ''),
 684             );
 685         }
 686
 687         $searchTags = implode(' ', escape($filteringTags));
 688         $data = array(
 689             'search_tags' => $searchTags,
 690             'tags' => $tagList,
 691         );
 692         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => $loginManager->isLoggedIn()));
 693
 694         foreach ($data as $key => $value) {
 695             $PAGE->assign($key, $value);
 696         }
 697
 698         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 699         $PAGE->assign('pagetitle', $searchTags. t('Tag cloud') .' - '. $conf->get('general.title', 'Shaarli'));
 700         $PAGE->renderPage('tag.cloud');
 701         exit;
 702     }
 703
 704     // -------- Tag list
 705     if ($targetPage == Router::$PAGE_TAGLIST) {
 706         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 707         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 708         $tags = $bookmarkService->bookmarksCountPerTag($filteringTags, $visibility);
 709         foreach ($filteringTags as $tag) {
 710             if (array_key_exists($tag, $tags)) {
 711                 unset($tags[$tag]);
 712             }
 713         }
 714
 715         if (! empty($_GET['sort']) && $_GET['sort'] === 'alpha') {
 716             alphabetical_sort($tags, false, true);
 717         }
 718
 719         $searchTags = implode(' ', escape($filteringTags));
 720         $data = [
 721             'search_tags' => $searchTags,
 722             'tags' => $tags,
 723         ];
 724         $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => $loginManager->isLoggedIn()]);
 725
 726         foreach ($data as $key => $value) {
 727             $PAGE->assign($key, $value);
 728         }
 729
 730         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 731         $PAGE->assign('pagetitle', $searchTags . t('Tag list') .' - '. $conf->get('general.title', 'Shaarli'));
 732         $PAGE->renderPage('tag.list');
 733         exit;
 734     }
 735
 736     // Daily page.
 737     if ($targetPage == Router::$PAGE_DAILY) {
 738         showDaily($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 739     }
 740
 741     // ATOM and RSS feed.
 742     if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
 743         $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
 744         header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
 745
 746         // Cache system
 747         $query = $_SERVER['QUERY_STRING'];
 748         $cache = new CachedPage(
 749             $conf->get('resource.page_cache'),
 750             page_url($_SERVER),
 751             startsWith($query, 'do='. $targetPage) && !$loginManager->isLoggedIn()
 752         );
 753         $cached = $cache->cachedVersion();
 754         if (!empty($cached)) {
 755             echo $cached;
 756             exit;
 757         }
 758
 759         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 760         // Generate data.
 761         $feedGenerator = new FeedBuilder(
 762             $bookmarkService,
 763             $factory->getFormatter(),
 764             $feedType,
 765             $_SERVER,
 766             $_GET,
 767             $loginManager->isLoggedIn()
 768         );
 769         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 770         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 771         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 772         $data = $feedGenerator->buildData();
 773
 774         // Process plugin hook.
 775         $pluginManager->executeHooks('render_feed', $data, array(
 776             'loggedin' => $loginManager->isLoggedIn(),
 777             'target' => $targetPage,
 778         ));
 779
 780         // Render the template.
 781         $PAGE->assignAll($data);
 782         $PAGE->renderPage('feed.'. $feedType);
 783         $cache->cache(ob_get_contents());
 784         ob_end_flush();
 785         exit;
 786     }
 787
 788     // Display opensearch plugin (XML)
 789     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 790         header('Content-Type: application/xml; charset=utf-8');
 791         $PAGE->assign('serverurl', index_url($_SERVER));
 792         $PAGE->renderPage('opensearch');
 793         exit;
 794     }
 795
 796     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 797     if (isset($_GET['addtag'])) {
 798         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
 799         if (empty($_SERVER['HTTP_REFERER'])) {
 800             // In case browser does not send HTTP_REFERER
 801             header('Location: ?searchtags='.urlencode($_GET['addtag']));
 802             exit;
 803         }
 804         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 805
 806         // Prevent redirection loop
 807         if (isset($params['addtag'])) {
 808             unset($params['addtag']);
 809         }
 810
 811         // Check if this tag is already in the search query and ignore it if it is.
 812         // Each tag is always separated by a space
 813         if (isset($params['searchtags'])) {
 814             $current_tags = explode(' ', $params['searchtags']);
 815         } else {
 816             $current_tags = array();
 817         }
 818         $addtag = true;
 819         foreach ($current_tags as $value) {
 820             if ($value === $_GET['addtag']) {
 821                 $addtag = false;
 822                 break;
 823             }
 824         }
 825         // Append the tag if necessary
 826         if (empty($params['searchtags'])) {
 827             $params['searchtags'] = trim($_GET['addtag']);
 828         } elseif ($addtag) {
 829             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
 830         }
 831
 832         // We also remove page (keeping the same page has no sense, since the
 833         // results are different)
 834         unset($params['page']);
 835
 836         header('Location: ?'.http_build_query($params));
 837         exit;
 838     }
 839
 840     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 841     if (isset($_GET['removetag'])) {
 842         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 843         if (empty($_SERVER['HTTP_REFERER'])) {
 844             header('Location: ?');
 845             exit;
 846         }
 847
 848         // In case browser does not send HTTP_REFERER
 849         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 850
 851         // Prevent redirection loop
 852         if (isset($params['removetag'])) {
 853             unset($params['removetag']);
 854         }
 855
 856         if (isset($params['searchtags'])) {
 857             $tags = explode(' ', $params['searchtags']);
 858             // Remove value from array $tags.
 859             $tags = array_diff($tags, array($_GET['removetag']));
 860             $params['searchtags'] = implode(' ', $tags);
 861
 862             if (empty($params['searchtags'])) {
 863                 unset($params['searchtags']);
 864             }
 865
 866             // We also remove page (keeping the same page has no sense, since
 867             // the results are different)
 868             unset($params['page']);
 869         }
 870         header('Location: ?'.http_build_query($params));
 871         exit;
 872     }
 873
 874     // -------- User wants to change the number of bookmarks per page (linksperpage=...)
 875     if (isset($_GET['linksperpage'])) {
 876         if (is_numeric($_GET['linksperpage'])) {
 877             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 878         }
 879
 880         if (! empty($_SERVER['HTTP_REFERER'])) {
 881             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 882         } else {
 883             $location = '?';
 884         }
 885         header('Location: '. $location);
 886         exit;
 887     }
 888
 889     // -------- User wants to see only private bookmarks (toggle)
 890     if (isset($_GET['visibility'])) {
 891         if ($_GET['visibility'] === 'private') {
 892             // Visibility not set or not already private, set private, otherwise reset it
 893             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 894                 // See only private bookmarks
 895                 $_SESSION['visibility'] = 'private';
 896             } else {
 897                 unset($_SESSION['visibility']);
 898             }
 899         } elseif ($_GET['visibility'] === 'public') {
 900             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 901                 // See only public bookmarks
 902                 $_SESSION['visibility'] = 'public';
 903             } else {
 904                 unset($_SESSION['visibility']);
 905             }
 906         }
 907
 908         if (! empty($_SERVER['HTTP_REFERER'])) {
 909             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 910         } else {
 911             $location = '?';
 912         }
 913         header('Location: '. $location);
 914         exit;
 915     }
 916
 917     // -------- User wants to see only untagged bookmarks (toggle)
 918     if (isset($_GET['untaggedonly'])) {
 919         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 920
 921         if (! empty($_SERVER['HTTP_REFERER'])) {
 922             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 923         } else {
 924             $location = '?';
 925         }
 926         header('Location: '. $location);
 927         exit;
 928     }
 929
 930     // -------- Handle other actions allowed for non-logged in users:
 931     if (!$loginManager->isLoggedIn()) {
 932         // User tries to post new link but is not logged in:
 933         // Show login screen, then redirect to ?post=...
 934         if (isset($_GET['post'])) {
 935             header( // Redirect to login page, then back to post link.
 936                 'Location: ?do=login&post='.urlencode($_GET['post']).
 937                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 938                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 939                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 940                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 941             );
 942             exit;
 943         }
 944
 945         showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 946         if (isset($_GET['edit_link'])) {
 947             header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
 948             exit;
 949         }
 950
 951         exit; // Never remove this one! All operations below are reserved for logged in user.
 952     }
 953
 954     // -------- All other functions are reserved for the registered user:
 955
 956     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 957     if ($targetPage == Router::$PAGE_TOOLS) {
 958         $data = [
 959             'pageabsaddr' => index_url($_SERVER),
 960             'sslenabled' => is_https($_SERVER),
 961         ];
 962         $pluginManager->executeHooks('render_tools', $data);
 963
 964         foreach ($data as $key => $value) {
 965             $PAGE->assign($key, $value);
 966         }
 967
 968         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 969         $PAGE->renderPage('tools');
 970         exit;
 971     }
 972
 973     // -------- User wants to change his/her password.
 974     if ($targetPage == Router::$PAGE_CHANGEPASSWORD) {
 975         if ($conf->get('security.open_shaarli')) {
 976             die(t('You are not supposed to change a password on an Open Shaarli.'));
 977         }
 978
 979         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) {
 980             if (!$sessionManager->checkToken($_POST['token'])) {
 981                 die(t('Wrong token.')); // Go away!
 982             }
 983
 984             // Make sure old password is correct.
 985             $oldhash = sha1(
 986                 $_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt')
 987             );
 988             if ($oldhash != $conf->get('credentials.hash')) {
 989                 echo '<script>alert("'
 990                     . t('The old password is not correct.')
 991                     .'");document.location=\'?do=changepasswd\';</script>';
 992                 exit;
 993             }
 994             // Save new password
 995             // Salt renders rainbow-tables attacks useless.
 996             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 997             $conf->set(
 998                 'credentials.hash',
 999                 sha1(
1000                     $_POST['setpassword']
1001                     . $conf->get('credentials.login')
1002                     . $conf->get('credentials.salt')
1003                 )
1004             );
1005             try {
1006                 $conf->write($loginManager->isLoggedIn());
1007             } catch (Exception $e) {
1008                 error_log(
1009                     'ERROR while writing config file after changing password.' . PHP_EOL .
1010                     $e->getMessage()
1011                 );
1012
1013                 // TODO: do not handle exceptions/errors in JS.
1014                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1015                 exit;
1016             }
1017             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'?do=tools\';</script>';
1018             exit;
1019         } else {
1020             // show the change password form.
1021             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
1022             $PAGE->renderPage('changepassword');
1023             exit;
1024         }
1025     }
1026
1027     // -------- User wants to change configuration
1028     if ($targetPage == Router::$PAGE_CONFIGURE) {
1029         if (!empty($_POST['title'])) {
1030             if (!$sessionManager->checkToken($_POST['token'])) {
1031                 die(t('Wrong token.')); // Go away!
1032             }
1033             $tz = 'UTC';
1034             if (!empty($_POST['continent']) && !empty($_POST['city'])
1035                 && isTimeZoneValid($_POST['continent'], $_POST['city'])
1036             ) {
1037                 $tz = $_POST['continent'] . '/' . $_POST['city'];
1038             }
1039             $conf->set('general.timezone', $tz);
1040             $conf->set('general.title', escape($_POST['title']));
1041             $conf->set('general.header_link', escape($_POST['titleLink']));
1042             $conf->set('general.retrieve_description', !empty($_POST['retrieveDescription']));
1043             $conf->set('resource.theme', escape($_POST['theme']));
1044             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
1045             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
1046             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
1047             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1048             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
1049             $conf->set('api.enabled', !empty($_POST['enableApi']));
1050             $conf->set('api.secret', escape($_POST['apiSecret']));
1051             $conf->set('formatter', escape($_POST['formatter']));
1052
1053             if (! empty($_POST['language'])) {
1054                 $conf->set('translation.language', escape($_POST['language']));
1055             }
1056
1057             $thumbnailsMode = extension_loaded('gd') ? $_POST['enableThumbnails'] : Thumbnailer::MODE_NONE;
1058             if ($thumbnailsMode !== Thumbnailer::MODE_NONE
1059                 && $thumbnailsMode !== $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE)
1060             ) {
1061                 $_SESSION['warnings'][] = t(
1062                     'You have enabled or changed thumbnails mode. '
1063                     .'<a href="?do=thumbs_update">Please synchronize them</a>.'
1064                 );
1065             }
1066             $conf->set('thumbnails.mode', $thumbnailsMode);
1067
1068             try {
1069                 $conf->write($loginManager->isLoggedIn());
1070                 $history->updateSettings();
1071                 invalidateCaches($conf->get('resource.page_cache'));
1072             } catch (Exception $e) {
1073                 error_log(
1074                     'ERROR while writing config file after configuration update.' . PHP_EOL .
1075                     $e->getMessage()
1076                 );
1077
1078                 // TODO: do not handle exceptions/errors in JS.
1079                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=configure\';</script>';
1080                 exit;
1081             }
1082             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'?do=configure\';</script>';
1083             exit;
1084         } else {
1085             // Show the configuration form.
1086             $PAGE->assign('title', $conf->get('general.title'));
1087             $PAGE->assign('theme', $conf->get('resource.theme'));
1088             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
1089             $PAGE->assign('formatter_available', ['default', 'markdown']);
1090             list($continents, $cities) = generateTimeZoneData(
1091                 timezone_identifiers_list(),
1092                 $conf->get('general.timezone')
1093             );
1094             $PAGE->assign('continents', $continents);
1095             $PAGE->assign('cities', $cities);
1096             $PAGE->assign('retrieve_description', $conf->get('general.retrieve_description'));
1097             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
1098             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
1099             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
1100             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
1101             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
1102             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
1103             $PAGE->assign('api_secret', $conf->get('api.secret'));
1104             $PAGE->assign('languages', Languages::getAvailableLanguages());
1105             $PAGE->assign('gd_enabled', extension_loaded('gd'));
1106             $PAGE->assign('thumbnails_mode', $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE));
1107             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
1108             $PAGE->renderPage('configure');
1109             exit;
1110         }
1111     }
1112
1113     // -------- User wants to rename a tag or delete it
1114     if ($targetPage == Router::$PAGE_CHANGETAG) {
1115         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1116             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
1117             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
1118             $PAGE->renderPage('changetag');
1119             exit;
1120         }
1121
1122         if (!$sessionManager->checkToken($_POST['token'])) {
1123             die(t('Wrong token.'));
1124         }
1125
1126         $toTag = isset($_POST['totag']) ? escape($_POST['totag']) : null;
1127         $fromTag = escape($_POST['fromtag']);
1128         $count = 0;
1129         $bookmarks = $bookmarkService->search(['searchtags' => $fromTag], BookmarkFilter::$ALL, true);
1130         foreach ($bookmarks as $bookmark) {
1131             if ($toTag) {
1132                 $bookmark->renameTag($fromTag, $toTag);
1133             } else {
1134                 $bookmark->deleteTag($fromTag);
1135             }
1136             $bookmarkService->set($bookmark, false);
1137             $history->updateLink($bookmark);
1138             $count++;
1139         }
1140         $bookmarkService->save();
1141         $delete = empty($_POST['totag']);
1142         $redirect = $delete ? 'do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
1143         $alert = $delete
1144             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d bookmarks.', $count), $count)
1145             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d bookmarks.', $count), $count);
1146         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
1147         exit;
1148     }
1149
1150     // -------- User wants to add a link without using the bookmarklet: Show form.
1151     if ($targetPage == Router::$PAGE_ADDLINK) {
1152         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
1153         $PAGE->renderPage('addlink');
1154         exit;
1155     }
1156
1157     // -------- User clicked the "Save" button when editing a link: Save link to database.
1158     if (isset($_POST['save_edit'])) {
1159         // Go away!
1160         if (! $sessionManager->checkToken($_POST['token'])) {
1161             die(t('Wrong token.'));
1162         }
1163
1164         // lf_id should only be present if the link exists.
1165         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : null;
1166         if ($id && $bookmarkService->exists($id)) {
1167             // Edit
1168             $bookmark = $bookmarkService->get($id);
1169         } else {
1170             // New link
1171             $bookmark = new Bookmark();
1172         }
1173
1174         $bookmark->setTitle($_POST['lf_title']);
1175         $bookmark->setDescription($_POST['lf_description']);
1176         $bookmark->setUrl($_POST['lf_url'], $conf->get('security.allowed_protocols'));
1177         $bookmark->setPrivate(isset($_POST['lf_private']));
1178         $bookmark->setTagsString($_POST['lf_tags']);
1179
1180         if ($conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
1181             && ! $bookmark->isNote()
1182         ) {
1183             $thumbnailer = new Thumbnailer($conf);
1184             $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1185         }
1186         $bookmarkService->addOrSet($bookmark, false);
1187
1188         // To preserve backward compatibility with 3rd parties, plugins still use arrays
1189         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1190         $formatter = $factory->getFormatter('raw');
1191         $data = $formatter->format($bookmark);
1192         $pluginManager->executeHooks('save_link', $data);
1193
1194         $bookmark->fromArray($data);
1195         $bookmarkService->set($bookmark);
1196
1197         // If we are called from the bookmarklet, we must close the popup:
1198         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1199             echo '<script>self.close();</script>';
1200             exit;
1201         }
1202
1203         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1204         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1205         // Scroll to the link which has been edited.
1206         $location .= '#' . $bookmark->getShortUrl();
1207         // After saving the link, redirect to the page the user was on.
1208         header('Location: '. $location);
1209         exit;
1210     }
1211
1212     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1213     if ($targetPage == Router::$PAGE_DELETELINK) {
1214         if (! $sessionManager->checkToken($_GET['token'])) {
1215             die(t('Wrong token.'));
1216         }
1217
1218         $ids = trim($_GET['lf_linkdate']);
1219         if (strpos($ids, ' ') !== false) {
1220             // multiple, space-separated ids provided
1221             $ids = array_values(array_filter(
1222                 preg_split('/\s+/', escape($ids)),
1223                 function ($item) {
1224                     return $item !== '';
1225                 }
1226             ));
1227         } else {
1228             // only a single id provided
1229             $shortUrl = $bookmarkService->get($ids)->getShortUrl();
1230             $ids = [$ids];
1231         }
1232         // assert at least one id is given
1233         if (!count($ids)) {
1234             die('no id provided');
1235         }
1236         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1237         $formatter = $factory->getFormatter('raw');
1238         foreach ($ids as $id) {
1239             $id = (int) escape($id);
1240             $bookmark = $bookmarkService->get($id);
1241             $data = $formatter->format($bookmark);
1242             $pluginManager->executeHooks('delete_link', $data);
1243             $bookmarkService->remove($bookmark, false);
1244         }
1245         $bookmarkService->save();
1246
1247         // If we are called from the bookmarklet, we must close the popup:
1248         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1249             echo '<script>self.close();</script>';
1250             exit;
1251         }
1252
1253         $location = '?';
1254         if (isset($_SERVER['HTTP_REFERER'])) {
1255             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
1256             $location = generateLocation(
1257                 $_SERVER['HTTP_REFERER'],
1258                 $_SERVER['HTTP_HOST'],
1259                 ['delete_link', 'edit_link', ! empty($shortUrl) ? $shortUrl : null]
1260             );
1261         }
1262
1263         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1264         exit;
1265     }
1266
1267     // -------- User clicked either "Set public" or "Set private" bulk operation
1268     if ($targetPage == Router::$PAGE_CHANGE_VISIBILITY) {
1269         if (! $sessionManager->checkToken($_GET['token'])) {
1270             die(t('Wrong token.'));
1271         }
1272
1273         $ids = trim($_GET['ids']);
1274         if (strpos($ids, ' ') !== false) {
1275             // multiple, space-separated ids provided
1276             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
1277         } else {
1278             // only a single id provided
1279             $ids = [$ids];
1280         }
1281
1282         // assert at least one id is given
1283         if (!count($ids)) {
1284             die('no id provided');
1285         }
1286         // assert that the visibility is valid
1287         if (!isset($_GET['newVisibility']) || !in_array($_GET['newVisibility'], ['public', 'private'])) {
1288             die('invalid visibility');
1289         } else {
1290             $private = $_GET['newVisibility'] === 'private';
1291         }
1292         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1293         $formatter = $factory->getFormatter('raw');
1294         foreach ($ids as $id) {
1295             $id = (int) escape($id);
1296             $bookmark = $bookmarkService->get($id);
1297             $bookmark->setPrivate($private);
1298
1299             // To preserve backward compatibility with 3rd parties, plugins still use arrays
1300             $data = $formatter->format($bookmark);
1301             $pluginManager->executeHooks('save_link', $data);
1302             $bookmark->fromArray($data);
1303
1304             $bookmarkService->set($bookmark);
1305         }
1306         $bookmarkService->save();
1307
1308         $location = '?';
1309         if (isset($_SERVER['HTTP_REFERER'])) {
1310             $location = generateLocation(
1311                 $_SERVER['HTTP_REFERER'],
1312                 $_SERVER['HTTP_HOST']
1313             );
1314         }
1315         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1316         exit;
1317     }
1318
1319     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1320     if (isset($_GET['edit_link'])) {
1321         $id = (int) escape($_GET['edit_link']);
1322         try {
1323             $link = $bookmarkService->get($id);  // Read database
1324         } catch (BookmarkNotFoundException $e) {
1325             // Link not found in database.
1326             header('Location: ?');
1327             exit;
1328         }
1329
1330         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1331         $formatter = $factory->getFormatter('raw');
1332         $formattedLink = $formatter->format($link);
1333         $tags = $bookmarkService->bookmarksCountPerTag();
1334         if ($conf->get('formatter') === 'markdown') {
1335             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1336         }
1337         $data = array(
1338             'link' => $formattedLink,
1339             'link_is_new' => false,
1340             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1341             'tags' => $tags,
1342         );
1343         $pluginManager->executeHooks('render_editlink', $data);
1344
1345         foreach ($data as $key => $value) {
1346             $PAGE->assign($key, $value);
1347         }
1348
1349         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1350         $PAGE->renderPage('editlink');
1351         exit;
1352     }
1353
1354     // -------- User want to post a new link: Display link edit form.
1355     if (isset($_GET['post'])) {
1356         $url = cleanup_url($_GET['post']);
1357
1358         $link_is_new = false;
1359         // Check if URL is not already in database (in this case, we will edit the existing link)
1360         $bookmark = $bookmarkService->findByUrl($url);
1361         if (! $bookmark) {
1362             $link_is_new = true;
1363             // Get title if it was provided in URL (by the bookmarklet).
1364             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1365             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1366             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1367             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1368             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1369
1370             // If this is an HTTP(S) link, we try go get the page to extract
1371             // the title (otherwise we will to straight to the edit form.)
1372             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1373                 $retrieveDescription = $conf->get('general.retrieve_description');
1374                 // Short timeout to keep the application responsive
1375                 // The callback will fill $charset and $title with data from the downloaded page.
1376                 get_http_response(
1377                     $url,
1378                     $conf->get('general.download_timeout', 30),
1379                     $conf->get('general.download_max_size', 4194304),
1380                     get_curl_download_callback($charset, $title, $description, $tags, $retrieveDescription)
1381                 );
1382                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1383                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1384                 }
1385             }
1386
1387             if ($url == '') {
1388                 $title = $conf->get('general.default_note_title', t('Note: '));
1389             }
1390             $url = escape($url);
1391             $title = escape($title);
1392
1393             $link = [
1394                 'title' => $title,
1395                 'url' => $url,
1396                 'description' => $description,
1397                 'tags' => $tags,
1398                 'private' => $private,
1399             ];
1400         } else {
1401             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1402             $formatter = $factory->getFormatter('raw');
1403             $link = $formatter->format($bookmark);
1404         }
1405
1406         $tags = $bookmarkService->bookmarksCountPerTag();
1407         if ($conf->get('formatter') === 'markdown') {
1408             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1409         }
1410         $data = [
1411             'link' => $link,
1412             'link_is_new' => $link_is_new,
1413             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1414             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1415             'tags' => $tags,
1416             'default_private_links' => $conf->get('privacy.default_private_links', false),
1417         ];
1418         $pluginManager->executeHooks('render_editlink', $data);
1419
1420         foreach ($data as $key => $value) {
1421             $PAGE->assign($key, $value);
1422         }
1423
1424         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1425         $PAGE->renderPage('editlink');
1426         exit;
1427     }
1428
1429     if ($targetPage == Router::$PAGE_PINLINK) {
1430         if (! isset($_GET['id']) || !$bookmarkService->exists($_GET['id'])) {
1431             // FIXME! Use a proper error system.
1432             $msg = t('Invalid link ID provided');
1433             echo '<script>alert("'. $msg .'");document.location=\''. index_url($_SERVER) .'\';</script>';
1434             exit;
1435         }
1436         if (! $sessionManager->checkToken($_GET['token'])) {
1437             die('Wrong token.');
1438         }
1439
1440         $link = $bookmarkService->get($_GET['id']);
1441         $link->setSticky(! $link->isSticky());
1442         $bookmarkService->set($link);
1443         header('Location: '.index_url($_SERVER));
1444         exit;
1445     }
1446
1447     if ($targetPage == Router::$PAGE_EXPORT) {
1448         // Export bookmarks as a Netscape Bookmarks file
1449
1450         if (empty($_GET['selection'])) {
1451             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1452             $PAGE->renderPage('export');
1453             exit;
1454         }
1455
1456         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1457         $selection = $_GET['selection'];
1458         if (isset($_GET['prepend_note_url'])) {
1459             $prependNoteUrl = $_GET['prepend_note_url'];
1460         } else {
1461             $prependNoteUrl = false;
1462         }
1463
1464         try {
1465             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1466             $formatter = $factory->getFormatter('raw');
1467             $PAGE->assign(
1468                 'links',
1469                 NetscapeBookmarkUtils::filterAndFormat(
1470                     $bookmarkService,
1471                     $formatter,
1472                     $selection,
1473                     $prependNoteUrl,
1474                     index_url($_SERVER)
1475                 )
1476             );
1477         } catch (Exception $exc) {
1478             header('Content-Type: text/plain; charset=utf-8');
1479             echo $exc->getMessage();
1480             exit;
1481         }
1482         $now = new DateTime();
1483         header('Content-Type: text/html; charset=utf-8');
1484         header(
1485             'Content-disposition: attachment; filename=bookmarks_'
1486             .$selection.'_'.$now->format(Bookmark::LINK_DATE_FORMAT).'.html'
1487         );
1488         $PAGE->assign('date', $now->format(DateTime::RFC822));
1489         $PAGE->assign('eol', PHP_EOL);
1490         $PAGE->assign('selection', $selection);
1491         $PAGE->renderPage('export.bookmarks');
1492         exit;
1493     }
1494
1495     if ($targetPage == Router::$PAGE_IMPORT) {
1496         // Upload a Netscape bookmark dump to import its contents
1497
1498         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1499             // Show import dialog
1500             $PAGE->assign(
1501                 'maxfilesize',
1502                 get_max_upload_size(
1503                     ini_get('post_max_size'),
1504                     ini_get('upload_max_filesize'),
1505                     false
1506                 )
1507             );
1508             $PAGE->assign(
1509                 'maxfilesizeHuman',
1510                 get_max_upload_size(
1511                     ini_get('post_max_size'),
1512                     ini_get('upload_max_filesize'),
1513                     true
1514                 )
1515             );
1516             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1517             $PAGE->renderPage('import');
1518             exit;
1519         }
1520
1521         // Import bookmarks from an uploaded file
1522         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1523             // The file is too big or some form field may be missing.
1524             $msg = sprintf(
1525                 t(
1526                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1527                     .' (%s). Please upload in smaller chunks.'
1528                 ),
1529                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1530             );
1531             echo '<script>alert("'. $msg .'");document.location=\'?do='.Router::$PAGE_IMPORT .'\';</script>';
1532             exit;
1533         }
1534         if (! $sessionManager->checkToken($_POST['token'])) {
1535             die('Wrong token.');
1536         }
1537         $status = NetscapeBookmarkUtils::import(
1538             $_POST,
1539             $_FILES,
1540             $bookmarkService,
1541             $conf,
1542             $history
1543         );
1544         echo '<script>alert("'.$status.'");document.location=\'?do='
1545              .Router::$PAGE_IMPORT .'\';</script>';
1546         exit;
1547     }
1548
1549     // Plugin administration page
1550     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1551         $pluginMeta = $pluginManager->getPluginsMeta();
1552
1553         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1554         $enabledPlugins = array_filter($pluginMeta, function ($v) {
1555             return $v['order'] !== false;
1556         });
1557         // Load parameters.
1558         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1559         uasort(
1560             $enabledPlugins,
1561             function ($a, $b) {
1562                 return $a['order'] - $b['order'];
1563             }
1564         );
1565         $disabledPlugins = array_filter($pluginMeta, function ($v) {
1566             return $v['order'] === false;
1567         });
1568
1569         $PAGE->assign('enabledPlugins', $enabledPlugins);
1570         $PAGE->assign('disabledPlugins', $disabledPlugins);
1571         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1572         $PAGE->renderPage('pluginsadmin');
1573         exit;
1574     }
1575
1576     // Plugin administration form action
1577     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1578         try {
1579             if (isset($_POST['parameters_form'])) {
1580                 $pluginManager->executeHooks('save_plugin_parameters', $_POST);
1581                 unset($_POST['parameters_form']);
1582                 foreach ($_POST as $param => $value) {
1583                     $conf->set('plugins.'. $param, escape($value));
1584                 }
1585             } else {
1586                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1587             }
1588             $conf->write($loginManager->isLoggedIn());
1589             $history->updateSettings();
1590         } catch (Exception $e) {
1591             error_log(
1592                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1593                 $e->getMessage()
1594             );
1595
1596             // TODO: do not handle exceptions/errors in JS.
1597             echo '<script>alert("'
1598                 . $e->getMessage()
1599                 .'");document.location=\'?do='
1600                 . Router::$PAGE_PLUGINSADMIN
1601                 .'\';</script>';
1602             exit;
1603         }
1604         header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1605         exit;
1606     }
1607
1608     // Get a fresh token
1609     if ($targetPage == Router::$GET_TOKEN) {
1610         header('Content-Type:text/plain');
1611         echo $sessionManager->generateToken();
1612         exit;
1613     }
1614
1615     // -------- Thumbnails Update
1616     if ($targetPage == Router::$PAGE_THUMBS_UPDATE) {
1617         $ids = [];
1618         foreach ($bookmarkService->search() as $bookmark) {
1619             // A note or not HTTP(S)
1620             if ($bookmark->isNote() || ! startsWith(strtolower($bookmark->getUrl()), 'http')) {
1621                 continue;
1622             }
1623             $ids[] = $bookmark->getId();
1624         }
1625         $PAGE->assign('ids', $ids);
1626         $PAGE->assign('pagetitle', t('Thumbnails update') .' - '. $conf->get('general.title', 'Shaarli'));
1627         $PAGE->renderPage('thumbnails');
1628         exit;
1629     }
1630
1631     // -------- Single Thumbnail Update
1632     if ($targetPage == Router::$AJAX_THUMB_UPDATE) {
1633         if (! isset($_POST['id']) || ! ctype_digit($_POST['id'])) {
1634             http_response_code(400);
1635             exit;
1636         }
1637         $id = (int) $_POST['id'];
1638         if (! $bookmarkService->exists($id)) {
1639             http_response_code(404);
1640             exit;
1641         }
1642         $thumbnailer = new Thumbnailer($conf);
1643         $bookmark = $bookmarkService->get($id);
1644         $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1645         $bookmarkService->set($bookmark);
1646
1647         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1648         echo json_encode($factory->getFormatter('raw')->format($bookmark));
1649         exit;
1650     }
1651
1652     // -------- Otherwise, simply display search form and bookmarks:
1653     showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
1654     exit;
1655 }
1656
1657 /**
1658  * Template for the list of bookmarks (<div id="linklist">)
1659  * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1660  *
1661  * @param pageBuilder              $PAGE          pageBuilder instance.
1662  * @param BookmarkServiceInterface $linkDb        LinkDB instance.
1663  * @param ConfigManager            $conf          Configuration Manager instance.
1664  * @param PluginManager            $pluginManager Plugin Manager instance.
1665  * @param LoginManager             $loginManager  LoginManager instance
1666  */
1667 function buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
1668 {
1669     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1670     $formatter = $factory->getFormatter();
1671
1672     // Used in templates
1673     if (isset($_GET['searchtags'])) {
1674         if (! empty($_GET['searchtags'])) {
1675             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1676         } else {
1677             $searchtags = false;
1678         }
1679     } else {
1680         $searchtags = '';
1681     }
1682     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1683
1684     // Smallhash filter
1685     if (! empty($_SERVER['QUERY_STRING'])
1686         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1687         try {
1688             $linksToDisplay = $linkDb->findByHash($_SERVER['QUERY_STRING']);
1689         } catch (BookmarkNotFoundException $e) {
1690             $PAGE->render404($e->getMessage());
1691             exit;
1692         }
1693     } else {
1694         // Filter bookmarks according search parameters.
1695         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : null;
1696         $request = [
1697             'searchtags' => $searchtags,
1698             'searchterm' => $searchterm,
1699         ];
1700         $linksToDisplay = $linkDb->search($request, $visibility, false, !empty($_SESSION['untaggedonly']));
1701     }
1702
1703     // ---- Handle paging.
1704     $keys = array();
1705     foreach ($linksToDisplay as $key => $value) {
1706         $keys[] = $key;
1707     }
1708
1709     // Select articles according to paging.
1710     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1711     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1712     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1713     $page = $page < 1 ? 1 : $page;
1714     $page = $page > $pagecount ? $pagecount : $page;
1715     // Start index.
1716     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1717     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1718
1719     $thumbnailsEnabled = $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE;
1720     if ($thumbnailsEnabled) {
1721         $thumbnailer = new Thumbnailer($conf);
1722     }
1723
1724     $linkDisp = array();
1725     while ($i<$end && $i<count($keys)) {
1726         $link = $formatter->format($linksToDisplay[$keys[$i]]);
1727
1728         // Logged in, thumbnails enabled, not a note,
1729         // and (never retrieved yet or no valid cache file)
1730         if ($loginManager->isLoggedIn()
1731             && $thumbnailsEnabled
1732             && !$linksToDisplay[$keys[$i]]->isNote()
1733             && $linksToDisplay[$keys[$i]]->getThumbnail() !== false
1734             && ! is_file($linksToDisplay[$keys[$i]]->getThumbnail())
1735         ) {
1736             $linksToDisplay[$keys[$i]]->setThumbnail($thumbnailer->get($link['url']));
1737             $linkDb->set($linksToDisplay[$keys[$i]], false);
1738             $updateDB = true;
1739             $link['thumbnail'] = $linksToDisplay[$keys[$i]]->getThumbnail();
1740         }
1741
1742         // Check for both signs of a note: starting with ? and 7 chars long.
1743 //        if ($link['url'][0] === '?' && strlen($link['url']) === 7) {
1744 //            $link['url'] = index_url($_SERVER) . $link['url'];
1745 //        }
1746
1747         $linkDisp[$keys[$i]] = $link;
1748         $i++;
1749     }
1750
1751     // If we retrieved new thumbnails, we update the database.
1752     if (!empty($updateDB)) {
1753         $linkDb->save();
1754     }
1755
1756     // Compute paging navigation
1757     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1758     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1759     $previous_page_url = '';
1760     if ($i != count($keys)) {
1761         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1762     }
1763     $next_page_url='';
1764     if ($page>1) {
1765         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1766     }
1767
1768     // Fill all template fields.
1769     $data = array(
1770         'previous_page_url' => $previous_page_url,
1771         'next_page_url' => $next_page_url,
1772         'page_current' => $page,
1773         'page_max' => $pagecount,
1774         'result_count' => count($linksToDisplay),
1775         'search_term' => $searchterm,
1776         'search_tags' => $searchtags,
1777         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1778         'links' => $linkDisp,
1779     );
1780
1781     // If there is only a single link, we change on-the-fly the title of the page.
1782     if (count($linksToDisplay) == 1) {
1783         $data['pagetitle'] = $linksToDisplay[$keys[0]]->getTitle() .' - '. $conf->get('general.title');
1784     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1785         $data['pagetitle'] = t('Search: ');
1786         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1787         $bracketWrap = function ($tag) {
1788             return '['. $tag .']';
1789         };
1790         $data['pagetitle'] .= ! empty($searchtags)
1791             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1792             : '';
1793         $data['pagetitle'] .= '- '. $conf->get('general.title');
1794     }
1795
1796     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1797
1798     foreach ($data as $key => $value) {
1799         $PAGE->assign($key, $value);
1800     }
1801
1802     return;
1803 }
1804
1805 /**
1806  * Installation
1807  * This function should NEVER be called if the file data/config.php exists.
1808  *
1809  * @param ConfigManager  $conf           Configuration Manager instance.
1810  * @param SessionManager $sessionManager SessionManager instance
1811  * @param LoginManager   $loginManager   LoginManager instance
1812  */
1813 function install($conf, $sessionManager, $loginManager)
1814 {
1815     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1816     if (endsWith($_SERVER['HTTP_HOST'], '.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) {
1817         mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions', 0705);
1818     }
1819
1820
1821     // This part makes sure sessions works correctly.
1822     // (Because on some hosts, session.save_path may not be set correctly,
1823     // or we may not have write access to it.)
1824     if (isset($_GET['test_session'])
1825         && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working')) {
1826         // Step 2: Check if data in session is correct.
1827         $msg = t(
1828             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1829             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1830             'and that you have write access to it.<br>'.
1831             'It currently points to %s.<br>'.
1832             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1833             'or any custom hostname without a dot causes cookie storage to fail. '.
1834             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1835         );
1836         $msg = sprintf($msg, session_save_path());
1837         echo $msg;
1838         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1839         die;
1840     }
1841     if (!isset($_SESSION['session_tested'])) {
1842         // Step 1 : Try to store data in session and reload page.
1843         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1844         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1845     }
1846     if (isset($_GET['test_session'])) {
1847         // Step 3: Sessions are OK. Remove test parameter from URL.
1848         header('Location: '.index_url($_SERVER));
1849     }
1850
1851
1852     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) {
1853         $tz = 'UTC';
1854         if (!empty($_POST['continent']) && !empty($_POST['city'])
1855             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1856         ) {
1857             $tz = $_POST['continent'].'/'.$_POST['city'];
1858         }
1859         $conf->set('general.timezone', $tz);
1860         $login = $_POST['setlogin'];
1861         $conf->set('credentials.login', $login);
1862         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1863         $conf->set('credentials.salt', $salt);
1864         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1865         if (!empty($_POST['title'])) {
1866             $conf->set('general.title', escape($_POST['title']));
1867         } else {
1868             $conf->set('general.title', 'Shared bookmarks on '.escape(index_url($_SERVER)));
1869         }
1870         $conf->set('translation.language', escape($_POST['language']));
1871         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1872         $conf->set('api.enabled', !empty($_POST['enableApi']));
1873         $conf->set(
1874             'api.secret',
1875             generate_api_secret(
1876                 $conf->get('credentials.login'),
1877                 $conf->get('credentials.salt')
1878             )
1879         );
1880         try {
1881             // Everything is ok, let's create config file.
1882             $conf->write($loginManager->isLoggedIn());
1883         } catch (Exception $e) {
1884             error_log(
1885                 'ERROR while writing config file after installation.' . PHP_EOL .
1886                     $e->getMessage()
1887             );
1888
1889             // TODO: do not handle exceptions/errors in JS.
1890             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1891             exit;
1892         }
1893
1894         $history = new History($conf->get('resource.history'));
1895         $bookmarkService = new BookmarkFileService($conf, $history, true);
1896         if ($bookmarkService->count() === 0) {
1897             $bookmarkService->initialize();
1898         }
1899
1900         echo '<script>alert('
1901             .'"Shaarli is now configured. '
1902             .'Please enter your login/password and start shaaring your bookmarks!"'
1903             .');document.location=\'?do=login\';</script>';
1904         exit;
1905     }
1906
1907     $PAGE = new PageBuilder($conf, $_SESSION, null, $sessionManager->generateToken());
1908     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1909     $PAGE->assign('continents', $continents);
1910     $PAGE->assign('cities', $cities);
1911     $PAGE->assign('languages', Languages::getAvailableLanguages());
1912     $PAGE->renderPage('install');
1913     exit;
1914 }
1915
1916 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
1917     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
1918 }
1919
1920 try {
1921     $history = new History($conf->get('resource.history'));
1922 } catch (Exception $e) {
1923     die($e->getMessage());
1924 }
1925
1926 $linkDb = new BookmarkFileService($conf, $history, $loginManager->isLoggedIn());
1927
1928 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) {
1929     showDailyRSS($linkDb, $conf, $loginManager);
1930     exit;
1931 }
1932
1933 $container = new \Slim\Container();
1934 $container['conf'] = $conf;
1935 $container['plugins'] = $pluginManager;
1936 $container['history'] = $history;
1937 $app = new \Slim\App($container);
1938
1939 // REST API routes
1940 $app->group('/api/v1', function () {
1941     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
1942     $this->get('/bookmarks', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
1943     $this->get('/bookmarks/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
1944     $this->post('/bookmarks', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
1945     $this->put('/bookmarks/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
1946     $this->delete('/bookmarks/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
1947
1948     $this->get('/tags', '\Shaarli\Api\Controllers\Tags:getTags')->setName('getTags');
1949     $this->get('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:getTag')->setName('getTag');
1950     $this->put('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:putTag')->setName('putTag');
1951     $this->delete('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:deleteTag')->setName('deleteTag');
1952
1953     $this->get('/history', '\Shaarli\Api\Controllers\HistoryController:getHistory')->setName('getHistory');
1954 })->add('\Shaarli\Api\ApiMiddleware');
1955
1956 $response = $app->run(true);
1957
1958 // Hack to make Slim and Shaarli router work together:
1959 // If a Slim route isn't found and NOT API call, we call renderPage().
1960 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
1961     // We use UTF-8 for proper international characters handling.
1962     header('Content-Type: text/html; charset=utf-8');
1963     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
1964 } else {
1965     $response = $response
1966         ->withHeader('Access-Control-Allow-Origin', '*')
1967         ->withHeader(
1968             'Access-Control-Allow-Headers',
1969             'X-Requested-With, Content-Type, Accept, Origin, Authorization'
1970         )
1971         ->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
1972     $app->respond($response);
1973 }