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($_POST['returnurl'], '/login') === false) {
 273                 header('Location: '. generateLocation($_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[$param]);
 287                 }
 288             }
 289         }
 290         // Redirect to login screen.
 291         echo '<script>alert("'. t("Wrong login/password.") .'");document.location=\'./login'.$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         $logMaxCount = $maxcount > 1 ? log($maxcount, 30) : 1;
 663         $tagList = array();
 664         foreach ($tags as $key => $value) {
 665             if (in_array($key, $filteringTags)) {
 666                 continue;
 667             }
 668             // Tag font size scaling:
 669             //   default 15 and 30 logarithm bases affect scaling,
 670             //   2.2 and 0.8 are arbitrary font sizes in em.
 671             $size = log($value, 15) / $logMaxCount * 2.2 + 0.8;
 672             $tagList[$key] = array(
 673                 'count' => $value,
 674                 'size' => number_format($size, 2, '.', ''),
 675             );
 676         }
 677
 678         $searchTags = implode(' ', escape($filteringTags));
 679         $data = array(
 680             'search_tags' => $searchTags,
 681             'tags' => $tagList,
 682         );
 683         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => $loginManager->isLoggedIn()));
 684
 685         foreach ($data as $key => $value) {
 686             $PAGE->assign($key, $value);
 687         }
 688
 689         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 690         $PAGE->assign('pagetitle', $searchTags. t('Tag cloud') .' - '. $conf->get('general.title', 'Shaarli'));
 691         $PAGE->renderPage('tag.cloud');
 692         exit;
 693     }
 694
 695     // -------- Tag list
 696     if ($targetPage == Router::$PAGE_TAGLIST) {
 697         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 698         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 699         $tags = $bookmarkService->bookmarksCountPerTag($filteringTags, $visibility);
 700         foreach ($filteringTags as $tag) {
 701             if (array_key_exists($tag, $tags)) {
 702                 unset($tags[$tag]);
 703             }
 704         }
 705
 706         if (! empty($_GET['sort']) && $_GET['sort'] === 'alpha') {
 707             alphabetical_sort($tags, false, true);
 708         }
 709
 710         $searchTags = implode(' ', escape($filteringTags));
 711         $data = [
 712             'search_tags' => $searchTags,
 713             'tags' => $tags,
 714         ];
 715         $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => $loginManager->isLoggedIn()]);
 716
 717         foreach ($data as $key => $value) {
 718             $PAGE->assign($key, $value);
 719         }
 720
 721         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 722         $PAGE->assign('pagetitle', $searchTags . t('Tag list') .' - '. $conf->get('general.title', 'Shaarli'));
 723         $PAGE->renderPage('tag.list');
 724         exit;
 725     }
 726
 727     // Daily page.
 728     if ($targetPage == Router::$PAGE_DAILY) {
 729         showDaily($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 730     }
 731
 732     // ATOM and RSS feed.
 733     if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
 734         $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
 735         header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
 736
 737         // Cache system
 738         $query = $_SERVER['QUERY_STRING'];
 739         $cache = new CachedPage(
 740             $conf->get('resource.page_cache'),
 741             page_url($_SERVER),
 742             startsWith($query, 'do='. $targetPage) && !$loginManager->isLoggedIn()
 743         );
 744         $cached = $cache->cachedVersion();
 745         if (!empty($cached)) {
 746             echo $cached;
 747             exit;
 748         }
 749
 750         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 751         // Generate data.
 752         $feedGenerator = new FeedBuilder(
 753             $bookmarkService,
 754             $factory->getFormatter(),
 755             $feedType,
 756             $_SERVER,
 757             $_GET,
 758             $loginManager->isLoggedIn()
 759         );
 760         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 761         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 762         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 763         $data = $feedGenerator->buildData();
 764
 765         // Process plugin hook.
 766         $pluginManager->executeHooks('render_feed', $data, array(
 767             'loggedin' => $loginManager->isLoggedIn(),
 768             'target' => $targetPage,
 769         ));
 770
 771         // Render the template.
 772         $PAGE->assignAll($data);
 773         $PAGE->renderPage('feed.'. $feedType);
 774         $cache->cache(ob_get_contents());
 775         ob_end_flush();
 776         exit;
 777     }
 778
 779     // Display opensearch plugin (XML)
 780     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 781         header('Content-Type: application/xml; charset=utf-8');
 782         $PAGE->assign('serverurl', index_url($_SERVER));
 783         $PAGE->renderPage('opensearch');
 784         exit;
 785     }
 786
 787     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 788     if (isset($_GET['addtag'])) {
 789         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
 790         if (empty($_SERVER['HTTP_REFERER'])) {
 791             // In case browser does not send HTTP_REFERER
 792             header('Location: ?searchtags='.urlencode($_GET['addtag']));
 793             exit;
 794         }
 795         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 796
 797         // Prevent redirection loop
 798         if (isset($params['addtag'])) {
 799             unset($params['addtag']);
 800         }
 801
 802         // Check if this tag is already in the search query and ignore it if it is.
 803         // Each tag is always separated by a space
 804         if (isset($params['searchtags'])) {
 805             $current_tags = explode(' ', $params['searchtags']);
 806         } else {
 807             $current_tags = array();
 808         }
 809         $addtag = true;
 810         foreach ($current_tags as $value) {
 811             if ($value === $_GET['addtag']) {
 812                 $addtag = false;
 813                 break;
 814             }
 815         }
 816         // Append the tag if necessary
 817         if (empty($params['searchtags'])) {
 818             $params['searchtags'] = trim($_GET['addtag']);
 819         } elseif ($addtag) {
 820             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
 821         }
 822
 823         // We also remove page (keeping the same page has no sense, since the
 824         // results are different)
 825         unset($params['page']);
 826
 827         header('Location: ?'.http_build_query($params));
 828         exit;
 829     }
 830
 831     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 832     if (isset($_GET['removetag'])) {
 833         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 834         if (empty($_SERVER['HTTP_REFERER'])) {
 835             header('Location: ?');
 836             exit;
 837         }
 838
 839         // In case browser does not send HTTP_REFERER
 840         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 841
 842         // Prevent redirection loop
 843         if (isset($params['removetag'])) {
 844             unset($params['removetag']);
 845         }
 846
 847         if (isset($params['searchtags'])) {
 848             $tags = explode(' ', $params['searchtags']);
 849             // Remove value from array $tags.
 850             $tags = array_diff($tags, array($_GET['removetag']));
 851             $params['searchtags'] = implode(' ', $tags);
 852
 853             if (empty($params['searchtags'])) {
 854                 unset($params['searchtags']);
 855             }
 856
 857             // We also remove page (keeping the same page has no sense, since
 858             // the results are different)
 859             unset($params['page']);
 860         }
 861         header('Location: ?'.http_build_query($params));
 862         exit;
 863     }
 864
 865     // -------- User wants to change the number of bookmarks per page (linksperpage=...)
 866     if (isset($_GET['linksperpage'])) {
 867         if (is_numeric($_GET['linksperpage'])) {
 868             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 869         }
 870
 871         if (! empty($_SERVER['HTTP_REFERER'])) {
 872             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 873         } else {
 874             $location = '?';
 875         }
 876         header('Location: '. $location);
 877         exit;
 878     }
 879
 880     // -------- User wants to see only private bookmarks (toggle)
 881     if (isset($_GET['visibility'])) {
 882         if ($_GET['visibility'] === 'private') {
 883             // Visibility not set or not already private, set private, otherwise reset it
 884             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 885                 // See only private bookmarks
 886                 $_SESSION['visibility'] = 'private';
 887             } else {
 888                 unset($_SESSION['visibility']);
 889             }
 890         } elseif ($_GET['visibility'] === 'public') {
 891             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 892                 // See only public bookmarks
 893                 $_SESSION['visibility'] = 'public';
 894             } else {
 895                 unset($_SESSION['visibility']);
 896             }
 897         }
 898
 899         if (! empty($_SERVER['HTTP_REFERER'])) {
 900             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 901         } else {
 902             $location = '?';
 903         }
 904         header('Location: '. $location);
 905         exit;
 906     }
 907
 908     // -------- User wants to see only untagged bookmarks (toggle)
 909     if (isset($_GET['untaggedonly'])) {
 910         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 911
 912         if (! empty($_SERVER['HTTP_REFERER'])) {
 913             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 914         } else {
 915             $location = '?';
 916         }
 917         header('Location: '. $location);
 918         exit;
 919     }
 920
 921     // -------- Handle other actions allowed for non-logged in users:
 922     if (!$loginManager->isLoggedIn()) {
 923         // User tries to post new link but is not logged in:
 924         // Show login screen, then redirect to ?post=...
 925         if (isset($_GET['post'])) {
 926             header( // Redirect to login page, then back to post link.
 927                 'Location: /login?post='.urlencode($_GET['post']).
 928                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 929                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 930                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 931                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 932             );
 933             exit;
 934         }
 935
 936         showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 937         if (isset($_GET['edit_link'])) {
 938             header('Location: /login?edit_link='. escape($_GET['edit_link']));
 939             exit;
 940         }
 941
 942         exit; // Never remove this one! All operations below are reserved for logged in user.
 943     }
 944
 945     // -------- All other functions are reserved for the registered user:
 946
 947     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 948     if ($targetPage == Router::$PAGE_TOOLS) {
 949         $data = [
 950             'pageabsaddr' => index_url($_SERVER),
 951             'sslenabled' => is_https($_SERVER),
 952         ];
 953         $pluginManager->executeHooks('render_tools', $data);
 954
 955         foreach ($data as $key => $value) {
 956             $PAGE->assign($key, $value);
 957         }
 958
 959         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 960         $PAGE->renderPage('tools');
 961         exit;
 962     }
 963
 964     // -------- User wants to change his/her password.
 965     if ($targetPage == Router::$PAGE_CHANGEPASSWORD) {
 966         if ($conf->get('security.open_shaarli')) {
 967             die(t('You are not supposed to change a password on an Open Shaarli.'));
 968         }
 969
 970         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) {
 971             if (!$sessionManager->checkToken($_POST['token'])) {
 972                 die(t('Wrong token.')); // Go away!
 973             }
 974
 975             // Make sure old password is correct.
 976             $oldhash = sha1(
 977                 $_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt')
 978             );
 979             if ($oldhash != $conf->get('credentials.hash')) {
 980                 echo '<script>alert("'
 981                     . t('The old password is not correct.')
 982                     .'");document.location=\'?do=changepasswd\';</script>';
 983                 exit;
 984             }
 985             // Save new password
 986             // Salt renders rainbow-tables attacks useless.
 987             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 988             $conf->set(
 989                 'credentials.hash',
 990                 sha1(
 991                     $_POST['setpassword']
 992                     . $conf->get('credentials.login')
 993                     . $conf->get('credentials.salt')
 994                 )
 995             );
 996             try {
 997                 $conf->write($loginManager->isLoggedIn());
 998             } catch (Exception $e) {
 999                 error_log(
1000                     'ERROR while writing config file after changing password.' . PHP_EOL .
1001                     $e->getMessage()
1002                 );
1003
1004                 // TODO: do not handle exceptions/errors in JS.
1005                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
1006                 exit;
1007             }
1008             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'?do=tools\';</script>';
1009             exit;
1010         } else {
1011             // show the change password form.
1012             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
1013             $PAGE->renderPage('changepassword');
1014             exit;
1015         }
1016     }
1017
1018     // -------- User wants to change configuration
1019     if ($targetPage == Router::$PAGE_CONFIGURE) {
1020         if (!empty($_POST['title'])) {
1021             if (!$sessionManager->checkToken($_POST['token'])) {
1022                 die(t('Wrong token.')); // Go away!
1023             }
1024             $tz = 'UTC';
1025             if (!empty($_POST['continent']) && !empty($_POST['city'])
1026                 && isTimeZoneValid($_POST['continent'], $_POST['city'])
1027             ) {
1028                 $tz = $_POST['continent'] . '/' . $_POST['city'];
1029             }
1030             $conf->set('general.timezone', $tz);
1031             $conf->set('general.title', escape($_POST['title']));
1032             $conf->set('general.header_link', escape($_POST['titleLink']));
1033             $conf->set('general.retrieve_description', !empty($_POST['retrieveDescription']));
1034             $conf->set('resource.theme', escape($_POST['theme']));
1035             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
1036             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
1037             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
1038             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1039             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
1040             $conf->set('api.enabled', !empty($_POST['enableApi']));
1041             $conf->set('api.secret', escape($_POST['apiSecret']));
1042             $conf->set('formatter', escape($_POST['formatter']));
1043
1044             if (! empty($_POST['language'])) {
1045                 $conf->set('translation.language', escape($_POST['language']));
1046             }
1047
1048             $thumbnailsMode = extension_loaded('gd') ? $_POST['enableThumbnails'] : Thumbnailer::MODE_NONE;
1049             if ($thumbnailsMode !== Thumbnailer::MODE_NONE
1050                 && $thumbnailsMode !== $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE)
1051             ) {
1052                 $_SESSION['warnings'][] = t(
1053                     'You have enabled or changed thumbnails mode. '
1054                     .'<a href="?do=thumbs_update">Please synchronize them</a>.'
1055                 );
1056             }
1057             $conf->set('thumbnails.mode', $thumbnailsMode);
1058
1059             try {
1060                 $conf->write($loginManager->isLoggedIn());
1061                 $history->updateSettings();
1062                 invalidateCaches($conf->get('resource.page_cache'));
1063             } catch (Exception $e) {
1064                 error_log(
1065                     'ERROR while writing config file after configuration update.' . PHP_EOL .
1066                     $e->getMessage()
1067                 );
1068
1069                 // TODO: do not handle exceptions/errors in JS.
1070                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=configure\';</script>';
1071                 exit;
1072             }
1073             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'?do=configure\';</script>';
1074             exit;
1075         } else {
1076             // Show the configuration form.
1077             $PAGE->assign('title', $conf->get('general.title'));
1078             $PAGE->assign('theme', $conf->get('resource.theme'));
1079             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
1080             $PAGE->assign('formatter_available', ['default', 'markdown']);
1081             list($continents, $cities) = generateTimeZoneData(
1082                 timezone_identifiers_list(),
1083                 $conf->get('general.timezone')
1084             );
1085             $PAGE->assign('continents', $continents);
1086             $PAGE->assign('cities', $cities);
1087             $PAGE->assign('retrieve_description', $conf->get('general.retrieve_description'));
1088             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
1089             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
1090             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
1091             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
1092             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
1093             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
1094             $PAGE->assign('api_secret', $conf->get('api.secret'));
1095             $PAGE->assign('languages', Languages::getAvailableLanguages());
1096             $PAGE->assign('gd_enabled', extension_loaded('gd'));
1097             $PAGE->assign('thumbnails_mode', $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE));
1098             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
1099             $PAGE->renderPage('configure');
1100             exit;
1101         }
1102     }
1103
1104     // -------- User wants to rename a tag or delete it
1105     if ($targetPage == Router::$PAGE_CHANGETAG) {
1106         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1107             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
1108             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
1109             $PAGE->renderPage('changetag');
1110             exit;
1111         }
1112
1113         if (!$sessionManager->checkToken($_POST['token'])) {
1114             die(t('Wrong token.'));
1115         }
1116
1117         $toTag = isset($_POST['totag']) ? escape($_POST['totag']) : null;
1118         $fromTag = escape($_POST['fromtag']);
1119         $count = 0;
1120         $bookmarks = $bookmarkService->search(['searchtags' => $fromTag], BookmarkFilter::$ALL, true);
1121         foreach ($bookmarks as $bookmark) {
1122             if ($toTag) {
1123                 $bookmark->renameTag($fromTag, $toTag);
1124             } else {
1125                 $bookmark->deleteTag($fromTag);
1126             }
1127             $bookmarkService->set($bookmark, false);
1128             $history->updateLink($bookmark);
1129             $count++;
1130         }
1131         $bookmarkService->save();
1132         $delete = empty($_POST['totag']);
1133         $redirect = $delete ? 'do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
1134         $alert = $delete
1135             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d bookmarks.', $count), $count)
1136             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d bookmarks.', $count), $count);
1137         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
1138         exit;
1139     }
1140
1141     // -------- User wants to add a link without using the bookmarklet: Show form.
1142     if ($targetPage == Router::$PAGE_ADDLINK) {
1143         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
1144         $PAGE->renderPage('addlink');
1145         exit;
1146     }
1147
1148     // -------- User clicked the "Save" button when editing a link: Save link to database.
1149     if (isset($_POST['save_edit'])) {
1150         // Go away!
1151         if (! $sessionManager->checkToken($_POST['token'])) {
1152             die(t('Wrong token.'));
1153         }
1154
1155         // lf_id should only be present if the link exists.
1156         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : null;
1157         if ($id && $bookmarkService->exists($id)) {
1158             // Edit
1159             $bookmark = $bookmarkService->get($id);
1160         } else {
1161             // New link
1162             $bookmark = new Bookmark();
1163         }
1164
1165         $bookmark->setTitle($_POST['lf_title']);
1166         $bookmark->setDescription($_POST['lf_description']);
1167         $bookmark->setUrl($_POST['lf_url'], $conf->get('security.allowed_protocols'));
1168         $bookmark->setPrivate(isset($_POST['lf_private']));
1169         $bookmark->setTagsString($_POST['lf_tags']);
1170
1171         if ($conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
1172             && ! $bookmark->isNote()
1173         ) {
1174             $thumbnailer = new Thumbnailer($conf);
1175             $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1176         }
1177         $bookmarkService->addOrSet($bookmark, false);
1178
1179         // To preserve backward compatibility with 3rd parties, plugins still use arrays
1180         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1181         $formatter = $factory->getFormatter('raw');
1182         $data = $formatter->format($bookmark);
1183         $pluginManager->executeHooks('save_link', $data);
1184
1185         $bookmark->fromArray($data);
1186         $bookmarkService->set($bookmark);
1187
1188         // If we are called from the bookmarklet, we must close the popup:
1189         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1190             echo '<script>self.close();</script>';
1191             exit;
1192         }
1193
1194         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1195         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1196         // Scroll to the link which has been edited.
1197         $location .= '#' . $bookmark->getShortUrl();
1198         // After saving the link, redirect to the page the user was on.
1199         header('Location: '. $location);
1200         exit;
1201     }
1202
1203     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1204     if ($targetPage == Router::$PAGE_DELETELINK) {
1205         if (! $sessionManager->checkToken($_GET['token'])) {
1206             die(t('Wrong token.'));
1207         }
1208
1209         $ids = trim($_GET['lf_linkdate']);
1210         if (strpos($ids, ' ') !== false) {
1211             // multiple, space-separated ids provided
1212             $ids = array_values(array_filter(
1213                 preg_split('/\s+/', escape($ids)),
1214                 function ($item) {
1215                     return $item !== '';
1216                 }
1217             ));
1218         } else {
1219             // only a single id provided
1220             $shortUrl = $bookmarkService->get($ids)->getShortUrl();
1221             $ids = [$ids];
1222         }
1223         // assert at least one id is given
1224         if (!count($ids)) {
1225             die('no id provided');
1226         }
1227         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1228         $formatter = $factory->getFormatter('raw');
1229         foreach ($ids as $id) {
1230             $id = (int) escape($id);
1231             $bookmark = $bookmarkService->get($id);
1232             $data = $formatter->format($bookmark);
1233             $pluginManager->executeHooks('delete_link', $data);
1234             $bookmarkService->remove($bookmark, false);
1235         }
1236         $bookmarkService->save();
1237
1238         // If we are called from the bookmarklet, we must close the popup:
1239         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1240             echo '<script>self.close();</script>';
1241             exit;
1242         }
1243
1244         $location = '?';
1245         if (isset($_SERVER['HTTP_REFERER'])) {
1246             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
1247             $location = generateLocation(
1248                 $_SERVER['HTTP_REFERER'],
1249                 $_SERVER['HTTP_HOST'],
1250                 ['delete_link', 'edit_link', ! empty($shortUrl) ? $shortUrl : null]
1251             );
1252         }
1253
1254         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1255         exit;
1256     }
1257
1258     // -------- User clicked either "Set public" or "Set private" bulk operation
1259     if ($targetPage == Router::$PAGE_CHANGE_VISIBILITY) {
1260         if (! $sessionManager->checkToken($_GET['token'])) {
1261             die(t('Wrong token.'));
1262         }
1263
1264         $ids = trim($_GET['ids']);
1265         if (strpos($ids, ' ') !== false) {
1266             // multiple, space-separated ids provided
1267             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
1268         } else {
1269             // only a single id provided
1270             $ids = [$ids];
1271         }
1272
1273         // assert at least one id is given
1274         if (!count($ids)) {
1275             die('no id provided');
1276         }
1277         // assert that the visibility is valid
1278         if (!isset($_GET['newVisibility']) || !in_array($_GET['newVisibility'], ['public', 'private'])) {
1279             die('invalid visibility');
1280         } else {
1281             $private = $_GET['newVisibility'] === 'private';
1282         }
1283         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1284         $formatter = $factory->getFormatter('raw');
1285         foreach ($ids as $id) {
1286             $id = (int) escape($id);
1287             $bookmark = $bookmarkService->get($id);
1288             $bookmark->setPrivate($private);
1289
1290             // To preserve backward compatibility with 3rd parties, plugins still use arrays
1291             $data = $formatter->format($bookmark);
1292             $pluginManager->executeHooks('save_link', $data);
1293             $bookmark->fromArray($data);
1294
1295             $bookmarkService->set($bookmark);
1296         }
1297         $bookmarkService->save();
1298
1299         $location = '?';
1300         if (isset($_SERVER['HTTP_REFERER'])) {
1301             $location = generateLocation(
1302                 $_SERVER['HTTP_REFERER'],
1303                 $_SERVER['HTTP_HOST']
1304             );
1305         }
1306         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1307         exit;
1308     }
1309
1310     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1311     if (isset($_GET['edit_link'])) {
1312         $id = (int) escape($_GET['edit_link']);
1313         try {
1314             $link = $bookmarkService->get($id);  // Read database
1315         } catch (BookmarkNotFoundException $e) {
1316             // Link not found in database.
1317             header('Location: ?');
1318             exit;
1319         }
1320
1321         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1322         $formatter = $factory->getFormatter('raw');
1323         $formattedLink = $formatter->format($link);
1324         $tags = $bookmarkService->bookmarksCountPerTag();
1325         if ($conf->get('formatter') === 'markdown') {
1326             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1327         }
1328         $data = array(
1329             'link' => $formattedLink,
1330             'link_is_new' => false,
1331             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1332             'tags' => $tags,
1333         );
1334         $pluginManager->executeHooks('render_editlink', $data);
1335
1336         foreach ($data as $key => $value) {
1337             $PAGE->assign($key, $value);
1338         }
1339
1340         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1341         $PAGE->renderPage('editlink');
1342         exit;
1343     }
1344
1345     // -------- User want to post a new link: Display link edit form.
1346     if (isset($_GET['post'])) {
1347         $url = cleanup_url($_GET['post']);
1348
1349         $link_is_new = false;
1350         // Check if URL is not already in database (in this case, we will edit the existing link)
1351         $bookmark = $bookmarkService->findByUrl($url);
1352         if (! $bookmark) {
1353             $link_is_new = true;
1354             // Get title if it was provided in URL (by the bookmarklet).
1355             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1356             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1357             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1358             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1359             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1360
1361             // If this is an HTTP(S) link, we try go get the page to extract
1362             // the title (otherwise we will to straight to the edit form.)
1363             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1364                 $retrieveDescription = $conf->get('general.retrieve_description');
1365                 // Short timeout to keep the application responsive
1366                 // The callback will fill $charset and $title with data from the downloaded page.
1367                 get_http_response(
1368                     $url,
1369                     $conf->get('general.download_timeout', 30),
1370                     $conf->get('general.download_max_size', 4194304),
1371                     get_curl_download_callback($charset, $title, $description, $tags, $retrieveDescription)
1372                 );
1373                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1374                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1375                 }
1376             }
1377
1378             if ($url == '') {
1379                 $title = $conf->get('general.default_note_title', t('Note: '));
1380             }
1381             $url = escape($url);
1382             $title = escape($title);
1383
1384             $link = [
1385                 'title' => $title,
1386                 'url' => $url,
1387                 'description' => $description,
1388                 'tags' => $tags,
1389                 'private' => $private,
1390             ];
1391         } else {
1392             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1393             $formatter = $factory->getFormatter('raw');
1394             $link = $formatter->format($bookmark);
1395         }
1396
1397         $tags = $bookmarkService->bookmarksCountPerTag();
1398         if ($conf->get('formatter') === 'markdown') {
1399             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1400         }
1401         $data = [
1402             'link' => $link,
1403             'link_is_new' => $link_is_new,
1404             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1405             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1406             'tags' => $tags,
1407             'default_private_links' => $conf->get('privacy.default_private_links', false),
1408         ];
1409         $pluginManager->executeHooks('render_editlink', $data);
1410
1411         foreach ($data as $key => $value) {
1412             $PAGE->assign($key, $value);
1413         }
1414
1415         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1416         $PAGE->renderPage('editlink');
1417         exit;
1418     }
1419
1420     if ($targetPage == Router::$PAGE_PINLINK) {
1421         if (! isset($_GET['id']) || !$bookmarkService->exists($_GET['id'])) {
1422             // FIXME! Use a proper error system.
1423             $msg = t('Invalid link ID provided');
1424             echo '<script>alert("'. $msg .'");document.location=\''. index_url($_SERVER) .'\';</script>';
1425             exit;
1426         }
1427         if (! $sessionManager->checkToken($_GET['token'])) {
1428             die('Wrong token.');
1429         }
1430
1431         $link = $bookmarkService->get($_GET['id']);
1432         $link->setSticky(! $link->isSticky());
1433         $bookmarkService->set($link);
1434         header('Location: '.index_url($_SERVER));
1435         exit;
1436     }
1437
1438     if ($targetPage == Router::$PAGE_EXPORT) {
1439         // Export bookmarks as a Netscape Bookmarks file
1440
1441         if (empty($_GET['selection'])) {
1442             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1443             $PAGE->renderPage('export');
1444             exit;
1445         }
1446
1447         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1448         $selection = $_GET['selection'];
1449         if (isset($_GET['prepend_note_url'])) {
1450             $prependNoteUrl = $_GET['prepend_note_url'];
1451         } else {
1452             $prependNoteUrl = false;
1453         }
1454
1455         try {
1456             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1457             $formatter = $factory->getFormatter('raw');
1458             $PAGE->assign(
1459                 'links',
1460                 NetscapeBookmarkUtils::filterAndFormat(
1461                     $bookmarkService,
1462                     $formatter,
1463                     $selection,
1464                     $prependNoteUrl,
1465                     index_url($_SERVER)
1466                 )
1467             );
1468         } catch (Exception $exc) {
1469             header('Content-Type: text/plain; charset=utf-8');
1470             echo $exc->getMessage();
1471             exit;
1472         }
1473         $now = new DateTime();
1474         header('Content-Type: text/html; charset=utf-8');
1475         header(
1476             'Content-disposition: attachment; filename=bookmarks_'
1477             .$selection.'_'.$now->format(Bookmark::LINK_DATE_FORMAT).'.html'
1478         );
1479         $PAGE->assign('date', $now->format(DateTime::RFC822));
1480         $PAGE->assign('eol', PHP_EOL);
1481         $PAGE->assign('selection', $selection);
1482         $PAGE->renderPage('export.bookmarks');
1483         exit;
1484     }
1485
1486     if ($targetPage == Router::$PAGE_IMPORT) {
1487         // Upload a Netscape bookmark dump to import its contents
1488
1489         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1490             // Show import dialog
1491             $PAGE->assign(
1492                 'maxfilesize',
1493                 get_max_upload_size(
1494                     ini_get('post_max_size'),
1495                     ini_get('upload_max_filesize'),
1496                     false
1497                 )
1498             );
1499             $PAGE->assign(
1500                 'maxfilesizeHuman',
1501                 get_max_upload_size(
1502                     ini_get('post_max_size'),
1503                     ini_get('upload_max_filesize'),
1504                     true
1505                 )
1506             );
1507             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1508             $PAGE->renderPage('import');
1509             exit;
1510         }
1511
1512         // Import bookmarks from an uploaded file
1513         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1514             // The file is too big or some form field may be missing.
1515             $msg = sprintf(
1516                 t(
1517                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1518                     .' (%s). Please upload in smaller chunks.'
1519                 ),
1520                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1521             );
1522             echo '<script>alert("'. $msg .'");document.location=\'?do='.Router::$PAGE_IMPORT .'\';</script>';
1523             exit;
1524         }
1525         if (! $sessionManager->checkToken($_POST['token'])) {
1526             die('Wrong token.');
1527         }
1528         $status = NetscapeBookmarkUtils::import(
1529             $_POST,
1530             $_FILES,
1531             $bookmarkService,
1532             $conf,
1533             $history
1534         );
1535         echo '<script>alert("'.$status.'");document.location=\'?do='
1536              .Router::$PAGE_IMPORT .'\';</script>';
1537         exit;
1538     }
1539
1540     // Plugin administration page
1541     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1542         $pluginMeta = $pluginManager->getPluginsMeta();
1543
1544         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1545         $enabledPlugins = array_filter($pluginMeta, function ($v) {
1546             return $v['order'] !== false;
1547         });
1548         // Load parameters.
1549         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1550         uasort(
1551             $enabledPlugins,
1552             function ($a, $b) {
1553                 return $a['order'] - $b['order'];
1554             }
1555         );
1556         $disabledPlugins = array_filter($pluginMeta, function ($v) {
1557             return $v['order'] === false;
1558         });
1559
1560         $PAGE->assign('enabledPlugins', $enabledPlugins);
1561         $PAGE->assign('disabledPlugins', $disabledPlugins);
1562         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1563         $PAGE->renderPage('pluginsadmin');
1564         exit;
1565     }
1566
1567     // Plugin administration form action
1568     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1569         try {
1570             if (isset($_POST['parameters_form'])) {
1571                 $pluginManager->executeHooks('save_plugin_parameters', $_POST);
1572                 unset($_POST['parameters_form']);
1573                 foreach ($_POST as $param => $value) {
1574                     $conf->set('plugins.'. $param, escape($value));
1575                 }
1576             } else {
1577                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1578             }
1579             $conf->write($loginManager->isLoggedIn());
1580             $history->updateSettings();
1581         } catch (Exception $e) {
1582             error_log(
1583                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1584                 $e->getMessage()
1585             );
1586
1587             // TODO: do not handle exceptions/errors in JS.
1588             echo '<script>alert("'
1589                 . $e->getMessage()
1590                 .'");document.location=\'?do='
1591                 . Router::$PAGE_PLUGINSADMIN
1592                 .'\';</script>';
1593             exit;
1594         }
1595         header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
1596         exit;
1597     }
1598
1599     // Get a fresh token
1600     if ($targetPage == Router::$GET_TOKEN) {
1601         header('Content-Type:text/plain');
1602         echo $sessionManager->generateToken();
1603         exit;
1604     }
1605
1606     // -------- Thumbnails Update
1607     if ($targetPage == Router::$PAGE_THUMBS_UPDATE) {
1608         $ids = [];
1609         foreach ($bookmarkService->search() as $bookmark) {
1610             // A note or not HTTP(S)
1611             if ($bookmark->isNote() || ! startsWith(strtolower($bookmark->getUrl()), 'http')) {
1612                 continue;
1613             }
1614             $ids[] = $bookmark->getId();
1615         }
1616         $PAGE->assign('ids', $ids);
1617         $PAGE->assign('pagetitle', t('Thumbnails update') .' - '. $conf->get('general.title', 'Shaarli'));
1618         $PAGE->renderPage('thumbnails');
1619         exit;
1620     }
1621
1622     // -------- Single Thumbnail Update
1623     if ($targetPage == Router::$AJAX_THUMB_UPDATE) {
1624         if (! isset($_POST['id']) || ! ctype_digit($_POST['id'])) {
1625             http_response_code(400);
1626             exit;
1627         }
1628         $id = (int) $_POST['id'];
1629         if (! $bookmarkService->exists($id)) {
1630             http_response_code(404);
1631             exit;
1632         }
1633         $thumbnailer = new Thumbnailer($conf);
1634         $bookmark = $bookmarkService->get($id);
1635         $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1636         $bookmarkService->set($bookmark);
1637
1638         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1639         echo json_encode($factory->getFormatter('raw')->format($bookmark));
1640         exit;
1641     }
1642
1643     // -------- Otherwise, simply display search form and bookmarks:
1644     showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
1645     exit;
1646 }
1647
1648 /**
1649  * Template for the list of bookmarks (<div id="linklist">)
1650  * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1651  *
1652  * @param pageBuilder              $PAGE          pageBuilder instance.
1653  * @param BookmarkServiceInterface $linkDb        LinkDB instance.
1654  * @param ConfigManager            $conf          Configuration Manager instance.
1655  * @param PluginManager            $pluginManager Plugin Manager instance.
1656  * @param LoginManager             $loginManager  LoginManager instance
1657  */
1658 function buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
1659 {
1660     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1661     $formatter = $factory->getFormatter();
1662
1663     // Used in templates
1664     if (isset($_GET['searchtags'])) {
1665         if (! empty($_GET['searchtags'])) {
1666             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1667         } else {
1668             $searchtags = false;
1669         }
1670     } else {
1671         $searchtags = '';
1672     }
1673     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1674
1675     // Smallhash filter
1676     if (! empty($_SERVER['QUERY_STRING'])
1677         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1678         try {
1679             $linksToDisplay = $linkDb->findByHash($_SERVER['QUERY_STRING']);
1680         } catch (BookmarkNotFoundException $e) {
1681             $PAGE->render404($e->getMessage());
1682             exit;
1683         }
1684     } else {
1685         // Filter bookmarks according search parameters.
1686         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : null;
1687         $request = [
1688             'searchtags' => $searchtags,
1689             'searchterm' => $searchterm,
1690         ];
1691         $linksToDisplay = $linkDb->search($request, $visibility, false, !empty($_SESSION['untaggedonly']));
1692     }
1693
1694     // ---- Handle paging.
1695     $keys = array();
1696     foreach ($linksToDisplay as $key => $value) {
1697         $keys[] = $key;
1698     }
1699
1700     // Select articles according to paging.
1701     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1702     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1703     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1704     $page = $page < 1 ? 1 : $page;
1705     $page = $page > $pagecount ? $pagecount : $page;
1706     // Start index.
1707     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1708     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1709
1710     $thumbnailsEnabled = $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE;
1711     if ($thumbnailsEnabled) {
1712         $thumbnailer = new Thumbnailer($conf);
1713     }
1714
1715     $linkDisp = array();
1716     while ($i<$end && $i<count($keys)) {
1717         $link = $formatter->format($linksToDisplay[$keys[$i]]);
1718
1719         // Logged in, thumbnails enabled, not a note,
1720         // and (never retrieved yet or no valid cache file)
1721         if ($loginManager->isLoggedIn()
1722             && $thumbnailsEnabled
1723             && !$linksToDisplay[$keys[$i]]->isNote()
1724             && $linksToDisplay[$keys[$i]]->getThumbnail() !== false
1725             && ! is_file($linksToDisplay[$keys[$i]]->getThumbnail())
1726         ) {
1727             $linksToDisplay[$keys[$i]]->setThumbnail($thumbnailer->get($link['url']));
1728             $linkDb->set($linksToDisplay[$keys[$i]], false);
1729             $updateDB = true;
1730             $link['thumbnail'] = $linksToDisplay[$keys[$i]]->getThumbnail();
1731         }
1732
1733         // Check for both signs of a note: starting with ? and 7 chars long.
1734 //        if ($link['url'][0] === '?' && strlen($link['url']) === 7) {
1735 //            $link['url'] = index_url($_SERVER) . $link['url'];
1736 //        }
1737
1738         $linkDisp[$keys[$i]] = $link;
1739         $i++;
1740     }
1741
1742     // If we retrieved new thumbnails, we update the database.
1743     if (!empty($updateDB)) {
1744         $linkDb->save();
1745     }
1746
1747     // Compute paging navigation
1748     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1749     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1750     $previous_page_url = '';
1751     if ($i != count($keys)) {
1752         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1753     }
1754     $next_page_url='';
1755     if ($page>1) {
1756         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1757     }
1758
1759     // Fill all template fields.
1760     $data = array(
1761         'previous_page_url' => $previous_page_url,
1762         'next_page_url' => $next_page_url,
1763         'page_current' => $page,
1764         'page_max' => $pagecount,
1765         'result_count' => count($linksToDisplay),
1766         'search_term' => $searchterm,
1767         'search_tags' => $searchtags,
1768         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1769         'links' => $linkDisp,
1770     );
1771
1772     // If there is only a single link, we change on-the-fly the title of the page.
1773     if (count($linksToDisplay) == 1) {
1774         $data['pagetitle'] = $linksToDisplay[$keys[0]]->getTitle() .' - '. $conf->get('general.title');
1775     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1776         $data['pagetitle'] = t('Search: ');
1777         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1778         $bracketWrap = function ($tag) {
1779             return '['. $tag .']';
1780         };
1781         $data['pagetitle'] .= ! empty($searchtags)
1782             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1783             : '';
1784         $data['pagetitle'] .= '- '. $conf->get('general.title');
1785     }
1786
1787     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1788
1789     foreach ($data as $key => $value) {
1790         $PAGE->assign($key, $value);
1791     }
1792
1793     return;
1794 }
1795
1796 /**
1797  * Installation
1798  * This function should NEVER be called if the file data/config.php exists.
1799  *
1800  * @param ConfigManager  $conf           Configuration Manager instance.
1801  * @param SessionManager $sessionManager SessionManager instance
1802  * @param LoginManager   $loginManager   LoginManager instance
1803  */
1804 function install($conf, $sessionManager, $loginManager)
1805 {
1806     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1807     if (endsWith($_SERVER['HTTP_HOST'], '.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) {
1808         mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions', 0705);
1809     }
1810
1811
1812     // This part makes sure sessions works correctly.
1813     // (Because on some hosts, session.save_path may not be set correctly,
1814     // or we may not have write access to it.)
1815     if (isset($_GET['test_session'])
1816         && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working')) {
1817         // Step 2: Check if data in session is correct.
1818         $msg = t(
1819             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1820             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1821             'and that you have write access to it.<br>'.
1822             'It currently points to %s.<br>'.
1823             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1824             'or any custom hostname without a dot causes cookie storage to fail. '.
1825             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1826         );
1827         $msg = sprintf($msg, session_save_path());
1828         echo $msg;
1829         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1830         die;
1831     }
1832     if (!isset($_SESSION['session_tested'])) {
1833         // Step 1 : Try to store data in session and reload page.
1834         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1835         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1836     }
1837     if (isset($_GET['test_session'])) {
1838         // Step 3: Sessions are OK. Remove test parameter from URL.
1839         header('Location: '.index_url($_SERVER));
1840     }
1841
1842
1843     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) {
1844         $tz = 'UTC';
1845         if (!empty($_POST['continent']) && !empty($_POST['city'])
1846             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1847         ) {
1848             $tz = $_POST['continent'].'/'.$_POST['city'];
1849         }
1850         $conf->set('general.timezone', $tz);
1851         $login = $_POST['setlogin'];
1852         $conf->set('credentials.login', $login);
1853         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1854         $conf->set('credentials.salt', $salt);
1855         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1856         if (!empty($_POST['title'])) {
1857             $conf->set('general.title', escape($_POST['title']));
1858         } else {
1859             $conf->set('general.title', 'Shared bookmarks on '.escape(index_url($_SERVER)));
1860         }
1861         $conf->set('translation.language', escape($_POST['language']));
1862         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1863         $conf->set('api.enabled', !empty($_POST['enableApi']));
1864         $conf->set(
1865             'api.secret',
1866             generate_api_secret(
1867                 $conf->get('credentials.login'),
1868                 $conf->get('credentials.salt')
1869             )
1870         );
1871         try {
1872             // Everything is ok, let's create config file.
1873             $conf->write($loginManager->isLoggedIn());
1874         } catch (Exception $e) {
1875             error_log(
1876                 'ERROR while writing config file after installation.' . PHP_EOL .
1877                     $e->getMessage()
1878             );
1879
1880             // TODO: do not handle exceptions/errors in JS.
1881             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1882             exit;
1883         }
1884
1885         $history = new History($conf->get('resource.history'));
1886         $bookmarkService = new BookmarkFileService($conf, $history, true);
1887         if ($bookmarkService->count() === 0) {
1888             $bookmarkService->initialize();
1889         }
1890
1891         echo '<script>alert('
1892             .'"Shaarli is now configured. '
1893             .'Please enter your login/password and start shaaring your bookmarks!"'
1894             .');document.location=\'./login\';</script>';
1895         exit;
1896     }
1897
1898     $PAGE = new PageBuilder($conf, $_SESSION, null, $sessionManager->generateToken());
1899     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1900     $PAGE->assign('continents', $continents);
1901     $PAGE->assign('cities', $cities);
1902     $PAGE->assign('languages', Languages::getAvailableLanguages());
1903     $PAGE->renderPage('install');
1904     exit;
1905 }
1906
1907 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
1908     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
1909 }
1910
1911 try {
1912     $history = new History($conf->get('resource.history'));
1913 } catch (Exception $e) {
1914     die($e->getMessage());
1915 }
1916
1917 $linkDb = new BookmarkFileService($conf, $history, $loginManager->isLoggedIn());
1918
1919 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) {
1920     showDailyRSS($linkDb, $conf, $loginManager);
1921     exit;
1922 }
1923
1924 $containerBuilder = new ContainerBuilder($conf, $sessionManager, $loginManager);
1925 $container = $containerBuilder->build();
1926 $app = new App($container);
1927
1928 // REST API routes
1929 $app->group('/api/v1', function () {
1930     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
1931     $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
1932     $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
1933     $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
1934     $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
1935     $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
1936
1937     $this->get('/tags', '\Shaarli\Api\Controllers\Tags:getTags')->setName('getTags');
1938     $this->get('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:getTag')->setName('getTag');
1939     $this->put('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:putTag')->setName('putTag');
1940     $this->delete('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:deleteTag')->setName('deleteTag');
1941
1942     $this->get('/history', '\Shaarli\Api\Controllers\HistoryController:getHistory')->setName('getHistory');
1943 })->add('\Shaarli\Api\ApiMiddleware');
1944
1945 $app->group('', function () {
1946     $this->get('/login', '\Shaarli\Front\Controller\LoginController:index')->setName('login');
1947 })->add('\Shaarli\Front\ShaarliMiddleware');
1948
1949 $response = $app->run(true);
1950
1951 // Hack to make Slim and Shaarli router work together:
1952 // If a Slim route isn't found and NOT API call, we call renderPage().
1953 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
1954     // We use UTF-8 for proper international characters handling.
1955     header('Content-Type: text/html; charset=utf-8');
1956     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
1957 } else {
1958     $response = $response
1959         ->withHeader('Access-Control-Allow-Origin', '*')
1960         ->withHeader(
1961             'Access-Control-Allow-Headers',
1962             'X-Requested-With, Content-Type, Accept, Origin, Authorization'
1963         )
1964         ->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
1965     $app->respond($response);
1966 }