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/http/HttpUtils.php';
  57 require_once 'application/http/UrlUtils.php';
  58 require_once 'application/updater/UpdaterUtils.php';
  59 require_once 'application/FileUtils.php';
  60 require_once 'application/TimeZone.php';
  61 require_once 'application/Utils.php';
  62
  63 use Shaarli\ApplicationUtils;
  64 use Shaarli\Bookmark\Bookmark;
  65 use Shaarli\Bookmark\BookmarkFileService;
  66 use Shaarli\Bookmark\BookmarkFilter;
  67 use Shaarli\Bookmark\BookmarkServiceInterface;
  68 use Shaarli\Bookmark\Exception\BookmarkNotFoundException;
  69 use Shaarli\Config\ConfigManager;
  70 use Shaarli\Container\ContainerBuilder;
  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\PageCacheManager;
  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     $pageCacheManager = new PageCacheManager($conf->get('resource.page_cache'));
 534     $updater = new Updater(
 535         UpdaterUtils::read_updates_file($conf->get('resource.updates')),
 536         $bookmarkService,
 537         $conf,
 538         $loginManager->isLoggedIn()
 539     );
 540     try {
 541         $newUpdates = $updater->update();
 542         if (! empty($newUpdates)) {
 543             UpdaterUtils::write_updates_file(
 544                 $conf->get('resource.updates'),
 545                 $updater->getDoneUpdates()
 546             );
 547
 548             $pageCacheManager->invalidateCaches();
 549         }
 550     } catch (Exception $e) {
 551         die($e->getMessage());
 552     }
 553
 554     $PAGE = new PageBuilder($conf, $_SESSION, $bookmarkService, $sessionManager->generateToken(), $loginManager->isLoggedIn());
 555     $PAGE->assign('linkcount', $bookmarkService->count(BookmarkFilter::$ALL));
 556     $PAGE->assign('privateLinkcount', $bookmarkService->count(BookmarkFilter::$PRIVATE));
 557     $PAGE->assign('plugin_errors', $pluginManager->getErrors());
 558
 559     // Determine which page will be rendered.
 560     $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
 561     $targetPage = Router::findPage($query, $_GET, $loginManager->isLoggedIn());
 562
 563     if (// if the user isn't logged in
 564         !$loginManager->isLoggedIn() &&
 565         // and Shaarli doesn't have public content...
 566         $conf->get('privacy.hide_public_links') &&
 567         // and is configured to enforce the login
 568         $conf->get('privacy.force_login') &&
 569         // and the current page isn't already the login page
 570         $targetPage !== Router::$PAGE_LOGIN &&
 571         // and the user is not requesting a feed (which would lead to a different content-type as expected)
 572         $targetPage !== Router::$PAGE_FEED_ATOM &&
 573         $targetPage !== Router::$PAGE_FEED_RSS
 574     ) {
 575         // force current page to be the login page
 576         $targetPage = Router::$PAGE_LOGIN;
 577     }
 578
 579     // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
 580     // Then assign generated data to RainTPL.
 581     $common_hooks = array(
 582         'includes',
 583         'header',
 584         'footer',
 585     );
 586
 587     foreach ($common_hooks as $name) {
 588         $plugin_data = array();
 589         $pluginManager->executeHooks(
 590             'render_' . $name,
 591             $plugin_data,
 592             array(
 593                 'target' => $targetPage,
 594                 'loggedin' => $loginManager->isLoggedIn()
 595             )
 596         );
 597         $PAGE->assign('plugins_' . $name, $plugin_data);
 598     }
 599
 600     // -------- Display login form.
 601     if ($targetPage == Router::$PAGE_LOGIN) {
 602         header('Location: ./login');
 603         exit;
 604     }
 605     // -------- User wants to logout.
 606     if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout')) {
 607         header('Location: ./logout');
 608         exit;
 609     }
 610
 611     // -------- Picture wall
 612     if ($targetPage == Router::$PAGE_PICWALL) {
 613         header('Location: ./picture-wall');
 614         exit;
 615     }
 616
 617     // -------- Tag cloud
 618     if ($targetPage == Router::$PAGE_TAGCLOUD) {
 619         header('Location: ./tag-cloud');
 620         exit;
 621     }
 622
 623     // -------- Tag list
 624     if ($targetPage == Router::$PAGE_TAGLIST) {
 625         header('Location: ./tag-list');
 626         exit;
 627     }
 628
 629     // Daily page.
 630     if ($targetPage == Router::$PAGE_DAILY) {
 631         showDaily($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 632     }
 633
 634     // ATOM and RSS feed.
 635     if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
 636         $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
 637         header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
 638
 639         // Cache system
 640         $query = $_SERVER['QUERY_STRING'];
 641         $cache = new CachedPage(
 642             $conf->get('resource.page_cache'),
 643             page_url($_SERVER),
 644             startsWith($query, 'do='. $targetPage) && !$loginManager->isLoggedIn()
 645         );
 646         $cached = $cache->cachedVersion();
 647         if (!empty($cached)) {
 648             echo $cached;
 649             exit;
 650         }
 651
 652         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 653         // Generate data.
 654         $feedGenerator = new FeedBuilder(
 655             $bookmarkService,
 656             $factory->getFormatter(),
 657             $feedType,
 658             $_SERVER,
 659             $_GET,
 660             $loginManager->isLoggedIn()
 661         );
 662         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 663         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 664         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 665         $data = $feedGenerator->buildData();
 666
 667         // Process plugin hook.
 668         $pluginManager->executeHooks('render_feed', $data, array(
 669             'loggedin' => $loginManager->isLoggedIn(),
 670             'target' => $targetPage,
 671         ));
 672
 673         // Render the template.
 674         $PAGE->assignAll($data);
 675         $PAGE->renderPage('feed.'. $feedType);
 676         $cache->cache(ob_get_contents());
 677         ob_end_flush();
 678         exit;
 679     }
 680
 681     // Display opensearch plugin (XML)
 682     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 683         header('Content-Type: application/xml; charset=utf-8');
 684         $PAGE->assign('serverurl', index_url($_SERVER));
 685         $PAGE->renderPage('opensearch');
 686         exit;
 687     }
 688
 689     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 690     if (isset($_GET['addtag'])) {
 691         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
 692         if (empty($_SERVER['HTTP_REFERER'])) {
 693             // In case browser does not send HTTP_REFERER
 694             header('Location: ?searchtags='.urlencode($_GET['addtag']));
 695             exit;
 696         }
 697         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 698
 699         // Prevent redirection loop
 700         if (isset($params['addtag'])) {
 701             unset($params['addtag']);
 702         }
 703
 704         // Check if this tag is already in the search query and ignore it if it is.
 705         // Each tag is always separated by a space
 706         if (isset($params['searchtags'])) {
 707             $current_tags = explode(' ', $params['searchtags']);
 708         } else {
 709             $current_tags = array();
 710         }
 711         $addtag = true;
 712         foreach ($current_tags as $value) {
 713             if ($value === $_GET['addtag']) {
 714                 $addtag = false;
 715                 break;
 716             }
 717         }
 718         // Append the tag if necessary
 719         if (empty($params['searchtags'])) {
 720             $params['searchtags'] = trim($_GET['addtag']);
 721         } elseif ($addtag) {
 722             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
 723         }
 724
 725         // We also remove page (keeping the same page has no sense, since the
 726         // results are different)
 727         unset($params['page']);
 728
 729         header('Location: ?'.http_build_query($params));
 730         exit;
 731     }
 732
 733     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 734     if (isset($_GET['removetag'])) {
 735         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 736         if (empty($_SERVER['HTTP_REFERER'])) {
 737             header('Location: ?');
 738             exit;
 739         }
 740
 741         // In case browser does not send HTTP_REFERER
 742         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 743
 744         // Prevent redirection loop
 745         if (isset($params['removetag'])) {
 746             unset($params['removetag']);
 747         }
 748
 749         if (isset($params['searchtags'])) {
 750             $tags = explode(' ', $params['searchtags']);
 751             // Remove value from array $tags.
 752             $tags = array_diff($tags, array($_GET['removetag']));
 753             $params['searchtags'] = implode(' ', $tags);
 754
 755             if (empty($params['searchtags'])) {
 756                 unset($params['searchtags']);
 757             }
 758
 759             // We also remove page (keeping the same page has no sense, since
 760             // the results are different)
 761             unset($params['page']);
 762         }
 763         header('Location: ?'.http_build_query($params));
 764         exit;
 765     }
 766
 767     // -------- User wants to change the number of bookmarks per page (linksperpage=...)
 768     if (isset($_GET['linksperpage'])) {
 769         if (is_numeric($_GET['linksperpage'])) {
 770             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 771         }
 772
 773         if (! empty($_SERVER['HTTP_REFERER'])) {
 774             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 775         } else {
 776             $location = '?';
 777         }
 778         header('Location: '. $location);
 779         exit;
 780     }
 781
 782     // -------- User wants to see only private bookmarks (toggle)
 783     if (isset($_GET['visibility'])) {
 784         if ($_GET['visibility'] === 'private') {
 785             // Visibility not set or not already private, set private, otherwise reset it
 786             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 787                 // See only private bookmarks
 788                 $_SESSION['visibility'] = 'private';
 789             } else {
 790                 unset($_SESSION['visibility']);
 791             }
 792         } elseif ($_GET['visibility'] === 'public') {
 793             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 794                 // See only public bookmarks
 795                 $_SESSION['visibility'] = 'public';
 796             } else {
 797                 unset($_SESSION['visibility']);
 798             }
 799         }
 800
 801         if (! empty($_SERVER['HTTP_REFERER'])) {
 802             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 803         } else {
 804             $location = '?';
 805         }
 806         header('Location: '. $location);
 807         exit;
 808     }
 809
 810     // -------- User wants to see only untagged bookmarks (toggle)
 811     if (isset($_GET['untaggedonly'])) {
 812         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 813
 814         if (! empty($_SERVER['HTTP_REFERER'])) {
 815             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 816         } else {
 817             $location = '?';
 818         }
 819         header('Location: '. $location);
 820         exit;
 821     }
 822
 823     // -------- Handle other actions allowed for non-logged in users:
 824     if (!$loginManager->isLoggedIn()) {
 825         // User tries to post new link but is not logged in:
 826         // Show login screen, then redirect to ?post=...
 827         if (isset($_GET['post'])) {
 828             header( // Redirect to login page, then back to post link.
 829                 'Location: ./login?post='.urlencode($_GET['post']).
 830                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 831                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 832                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 833                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 834             );
 835             exit;
 836         }
 837
 838         showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 839         if (isset($_GET['edit_link'])) {
 840             header('Location: ./login?edit_link='. escape($_GET['edit_link']));
 841             exit;
 842         }
 843
 844         exit; // Never remove this one! All operations below are reserved for logged in user.
 845     }
 846
 847     // -------- All other functions are reserved for the registered user:
 848
 849     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 850     if ($targetPage == Router::$PAGE_TOOLS) {
 851         $data = [
 852             'pageabsaddr' => index_url($_SERVER),
 853             'sslenabled' => is_https($_SERVER),
 854         ];
 855         $pluginManager->executeHooks('render_tools', $data);
 856
 857         foreach ($data as $key => $value) {
 858             $PAGE->assign($key, $value);
 859         }
 860
 861         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 862         $PAGE->renderPage('tools');
 863         exit;
 864     }
 865
 866     // -------- User wants to change his/her password.
 867     if ($targetPage == Router::$PAGE_CHANGEPASSWORD) {
 868         if ($conf->get('security.open_shaarli')) {
 869             die(t('You are not supposed to change a password on an Open Shaarli.'));
 870         }
 871
 872         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) {
 873             if (!$sessionManager->checkToken($_POST['token'])) {
 874                 die(t('Wrong token.')); // Go away!
 875             }
 876
 877             // Make sure old password is correct.
 878             $oldhash = sha1(
 879                 $_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt')
 880             );
 881             if ($oldhash != $conf->get('credentials.hash')) {
 882                 echo '<script>alert("'
 883                     . t('The old password is not correct.')
 884                     .'");document.location=\'./?do=changepasswd\';</script>';
 885                 exit;
 886             }
 887             // Save new password
 888             // Salt renders rainbow-tables attacks useless.
 889             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 890             $conf->set(
 891                 'credentials.hash',
 892                 sha1(
 893                     $_POST['setpassword']
 894                     . $conf->get('credentials.login')
 895                     . $conf->get('credentials.salt')
 896                 )
 897             );
 898             try {
 899                 $conf->write($loginManager->isLoggedIn());
 900             } catch (Exception $e) {
 901                 error_log(
 902                     'ERROR while writing config file after changing password.' . PHP_EOL .
 903                     $e->getMessage()
 904                 );
 905
 906                 // TODO: do not handle exceptions/errors in JS.
 907                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'./?do=tools\';</script>';
 908                 exit;
 909             }
 910             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'./?do=tools\';</script>';
 911             exit;
 912         } else {
 913             // show the change password form.
 914             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
 915             $PAGE->renderPage('changepassword');
 916             exit;
 917         }
 918     }
 919
 920     // -------- User wants to change configuration
 921     if ($targetPage == Router::$PAGE_CONFIGURE) {
 922         if (!empty($_POST['title'])) {
 923             if (!$sessionManager->checkToken($_POST['token'])) {
 924                 die(t('Wrong token.')); // Go away!
 925             }
 926             $tz = 'UTC';
 927             if (!empty($_POST['continent']) && !empty($_POST['city'])
 928                 && isTimeZoneValid($_POST['continent'], $_POST['city'])
 929             ) {
 930                 $tz = $_POST['continent'] . '/' . $_POST['city'];
 931             }
 932             $conf->set('general.timezone', $tz);
 933             $conf->set('general.title', escape($_POST['title']));
 934             $conf->set('general.header_link', escape($_POST['titleLink']));
 935             $conf->set('general.retrieve_description', !empty($_POST['retrieveDescription']));
 936             $conf->set('resource.theme', escape($_POST['theme']));
 937             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
 938             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
 939             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
 940             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
 941             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
 942             $conf->set('api.enabled', !empty($_POST['enableApi']));
 943             $conf->set('api.secret', escape($_POST['apiSecret']));
 944             $conf->set('formatter', escape($_POST['formatter']));
 945
 946             if (! empty($_POST['language'])) {
 947                 $conf->set('translation.language', escape($_POST['language']));
 948             }
 949
 950             $thumbnailsMode = extension_loaded('gd') ? $_POST['enableThumbnails'] : Thumbnailer::MODE_NONE;
 951             if ($thumbnailsMode !== Thumbnailer::MODE_NONE
 952                 && $thumbnailsMode !== $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE)
 953             ) {
 954                 $_SESSION['warnings'][] = t(
 955                     'You have enabled or changed thumbnails mode. '
 956                     .'<a href="./?do=thumbs_update">Please synchronize them</a>.'
 957                 );
 958             }
 959             $conf->set('thumbnails.mode', $thumbnailsMode);
 960
 961             try {
 962                 $conf->write($loginManager->isLoggedIn());
 963                 $history->updateSettings();
 964                 $pageCacheManager->invalidateCaches();
 965             } catch (Exception $e) {
 966                 error_log(
 967                     'ERROR while writing config file after configuration update.' . PHP_EOL .
 968                     $e->getMessage()
 969                 );
 970
 971                 // TODO: do not handle exceptions/errors in JS.
 972                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'./?do=configure\';</script>';
 973                 exit;
 974             }
 975             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'./?do=configure\';</script>';
 976             exit;
 977         } else {
 978             // Show the configuration form.
 979             $PAGE->assign('title', $conf->get('general.title'));
 980             $PAGE->assign('theme', $conf->get('resource.theme'));
 981             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
 982             $PAGE->assign('formatter_available', ['default', 'markdown']);
 983             list($continents, $cities) = generateTimeZoneData(
 984                 timezone_identifiers_list(),
 985                 $conf->get('general.timezone')
 986             );
 987             $PAGE->assign('continents', $continents);
 988             $PAGE->assign('cities', $cities);
 989             $PAGE->assign('retrieve_description', $conf->get('general.retrieve_description'));
 990             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
 991             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
 992             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
 993             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
 994             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
 995             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
 996             $PAGE->assign('api_secret', $conf->get('api.secret'));
 997             $PAGE->assign('languages', Languages::getAvailableLanguages());
 998             $PAGE->assign('gd_enabled', extension_loaded('gd'));
 999             $PAGE->assign('thumbnails_mode', $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE));
1000             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
1001             $PAGE->renderPage('configure');
1002             exit;
1003         }
1004     }
1005
1006     // -------- User wants to rename a tag or delete it
1007     if ($targetPage == Router::$PAGE_CHANGETAG) {
1008         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1009             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
1010             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
1011             $PAGE->renderPage('changetag');
1012             exit;
1013         }
1014
1015         if (!$sessionManager->checkToken($_POST['token'])) {
1016             die(t('Wrong token.'));
1017         }
1018
1019         $toTag = isset($_POST['totag']) ? escape($_POST['totag']) : null;
1020         $fromTag = escape($_POST['fromtag']);
1021         $count = 0;
1022         $bookmarks = $bookmarkService->search(['searchtags' => $fromTag], BookmarkFilter::$ALL, true);
1023         foreach ($bookmarks as $bookmark) {
1024             if ($toTag) {
1025                 $bookmark->renameTag($fromTag, $toTag);
1026             } else {
1027                 $bookmark->deleteTag($fromTag);
1028             }
1029             $bookmarkService->set($bookmark, false);
1030             $history->updateLink($bookmark);
1031             $count++;
1032         }
1033         $bookmarkService->save();
1034         $delete = empty($_POST['totag']);
1035         $redirect = $delete ? './do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
1036         $alert = $delete
1037             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d bookmarks.', $count), $count)
1038             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d bookmarks.', $count), $count);
1039         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
1040         exit;
1041     }
1042
1043     // -------- User wants to add a link without using the bookmarklet: Show form.
1044     if ($targetPage == Router::$PAGE_ADDLINK) {
1045         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
1046         $PAGE->renderPage('addlink');
1047         exit;
1048     }
1049
1050     // -------- User clicked the "Save" button when editing a link: Save link to database.
1051     if (isset($_POST['save_edit'])) {
1052         // Go away!
1053         if (! $sessionManager->checkToken($_POST['token'])) {
1054             die(t('Wrong token.'));
1055         }
1056
1057         // lf_id should only be present if the link exists.
1058         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : null;
1059         if ($id && $bookmarkService->exists($id)) {
1060             // Edit
1061             $bookmark = $bookmarkService->get($id);
1062         } else {
1063             // New link
1064             $bookmark = new Bookmark();
1065         }
1066
1067         $bookmark->setTitle($_POST['lf_title']);
1068         $bookmark->setDescription($_POST['lf_description']);
1069         $bookmark->setUrl($_POST['lf_url'], $conf->get('security.allowed_protocols'));
1070         $bookmark->setPrivate(isset($_POST['lf_private']));
1071         $bookmark->setTagsString($_POST['lf_tags']);
1072
1073         if ($conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
1074             && ! $bookmark->isNote()
1075         ) {
1076             $thumbnailer = new Thumbnailer($conf);
1077             $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1078         }
1079         $bookmarkService->addOrSet($bookmark, false);
1080
1081         // To preserve backward compatibility with 3rd parties, plugins still use arrays
1082         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1083         $formatter = $factory->getFormatter('raw');
1084         $data = $formatter->format($bookmark);
1085         $pluginManager->executeHooks('save_link', $data);
1086
1087         $bookmark->fromArray($data);
1088         $bookmarkService->set($bookmark);
1089
1090         // If we are called from the bookmarklet, we must close the popup:
1091         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1092             echo '<script>self.close();</script>';
1093             exit;
1094         }
1095
1096         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1097         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1098         // Scroll to the link which has been edited.
1099         $location .= '#' . $bookmark->getShortUrl();
1100         // After saving the link, redirect to the page the user was on.
1101         header('Location: '. $location);
1102         exit;
1103     }
1104
1105     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1106     if ($targetPage == Router::$PAGE_DELETELINK) {
1107         if (! $sessionManager->checkToken($_GET['token'])) {
1108             die(t('Wrong token.'));
1109         }
1110
1111         $ids = trim($_GET['lf_linkdate']);
1112         if (strpos($ids, ' ') !== false) {
1113             // multiple, space-separated ids provided
1114             $ids = array_values(array_filter(
1115                 preg_split('/\s+/', escape($ids)),
1116                 function ($item) {
1117                     return $item !== '';
1118                 }
1119             ));
1120         } else {
1121             // only a single id provided
1122             $shortUrl = $bookmarkService->get($ids)->getShortUrl();
1123             $ids = [$ids];
1124         }
1125         // assert at least one id is given
1126         if (!count($ids)) {
1127             die('no id provided');
1128         }
1129         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1130         $formatter = $factory->getFormatter('raw');
1131         foreach ($ids as $id) {
1132             $id = (int) escape($id);
1133             $bookmark = $bookmarkService->get($id);
1134             $data = $formatter->format($bookmark);
1135             $pluginManager->executeHooks('delete_link', $data);
1136             $bookmarkService->remove($bookmark, false);
1137         }
1138         $bookmarkService->save();
1139
1140         // If we are called from the bookmarklet, we must close the popup:
1141         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1142             echo '<script>self.close();</script>';
1143             exit;
1144         }
1145
1146         $location = '?';
1147         if (isset($_SERVER['HTTP_REFERER'])) {
1148             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
1149             $location = generateLocation(
1150                 $_SERVER['HTTP_REFERER'],
1151                 $_SERVER['HTTP_HOST'],
1152                 ['delete_link', 'edit_link', ! empty($shortUrl) ? $shortUrl : null]
1153             );
1154         }
1155
1156         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1157         exit;
1158     }
1159
1160     // -------- User clicked either "Set public" or "Set private" bulk operation
1161     if ($targetPage == Router::$PAGE_CHANGE_VISIBILITY) {
1162         if (! $sessionManager->checkToken($_GET['token'])) {
1163             die(t('Wrong token.'));
1164         }
1165
1166         $ids = trim($_GET['ids']);
1167         if (strpos($ids, ' ') !== false) {
1168             // multiple, space-separated ids provided
1169             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
1170         } else {
1171             // only a single id provided
1172             $ids = [$ids];
1173         }
1174
1175         // assert at least one id is given
1176         if (!count($ids)) {
1177             die('no id provided');
1178         }
1179         // assert that the visibility is valid
1180         if (!isset($_GET['newVisibility']) || !in_array($_GET['newVisibility'], ['public', 'private'])) {
1181             die('invalid visibility');
1182         } else {
1183             $private = $_GET['newVisibility'] === 'private';
1184         }
1185         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1186         $formatter = $factory->getFormatter('raw');
1187         foreach ($ids as $id) {
1188             $id = (int) escape($id);
1189             $bookmark = $bookmarkService->get($id);
1190             $bookmark->setPrivate($private);
1191
1192             // To preserve backward compatibility with 3rd parties, plugins still use arrays
1193             $data = $formatter->format($bookmark);
1194             $pluginManager->executeHooks('save_link', $data);
1195             $bookmark->fromArray($data);
1196
1197             $bookmarkService->set($bookmark);
1198         }
1199         $bookmarkService->save();
1200
1201         $location = '?';
1202         if (isset($_SERVER['HTTP_REFERER'])) {
1203             $location = generateLocation(
1204                 $_SERVER['HTTP_REFERER'],
1205                 $_SERVER['HTTP_HOST']
1206             );
1207         }
1208         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1209         exit;
1210     }
1211
1212     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1213     if (isset($_GET['edit_link'])) {
1214         $id = (int) escape($_GET['edit_link']);
1215         try {
1216             $link = $bookmarkService->get($id);  // Read database
1217         } catch (BookmarkNotFoundException $e) {
1218             // Link not found in database.
1219             header('Location: ?');
1220             exit;
1221         }
1222
1223         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1224         $formatter = $factory->getFormatter('raw');
1225         $formattedLink = $formatter->format($link);
1226         $tags = $bookmarkService->bookmarksCountPerTag();
1227         if ($conf->get('formatter') === 'markdown') {
1228             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1229         }
1230         $data = array(
1231             'link' => $formattedLink,
1232             'link_is_new' => false,
1233             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1234             'tags' => $tags,
1235         );
1236         $pluginManager->executeHooks('render_editlink', $data);
1237
1238         foreach ($data as $key => $value) {
1239             $PAGE->assign($key, $value);
1240         }
1241
1242         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1243         $PAGE->renderPage('editlink');
1244         exit;
1245     }
1246
1247     // -------- User want to post a new link: Display link edit form.
1248     if (isset($_GET['post'])) {
1249         $url = cleanup_url($_GET['post']);
1250
1251         $link_is_new = false;
1252         // Check if URL is not already in database (in this case, we will edit the existing link)
1253         $bookmark = $bookmarkService->findByUrl($url);
1254         if (! $bookmark) {
1255             $link_is_new = true;
1256             // Get title if it was provided in URL (by the bookmarklet).
1257             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1258             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1259             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1260             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1261             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1262
1263             // If this is an HTTP(S) link, we try go get the page to extract
1264             // the title (otherwise we will to straight to the edit form.)
1265             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1266                 $retrieveDescription = $conf->get('general.retrieve_description');
1267                 // Short timeout to keep the application responsive
1268                 // The callback will fill $charset and $title with data from the downloaded page.
1269                 get_http_response(
1270                     $url,
1271                     $conf->get('general.download_timeout', 30),
1272                     $conf->get('general.download_max_size', 4194304),
1273                     get_curl_download_callback($charset, $title, $description, $tags, $retrieveDescription)
1274                 );
1275                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1276                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1277                 }
1278             }
1279
1280             if ($url == '') {
1281                 $title = $conf->get('general.default_note_title', t('Note: '));
1282             }
1283             $url = escape($url);
1284             $title = escape($title);
1285
1286             $link = [
1287                 'title' => $title,
1288                 'url' => $url,
1289                 'description' => $description,
1290                 'tags' => $tags,
1291                 'private' => $private,
1292             ];
1293         } else {
1294             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1295             $formatter = $factory->getFormatter('raw');
1296             $link = $formatter->format($bookmark);
1297         }
1298
1299         $tags = $bookmarkService->bookmarksCountPerTag();
1300         if ($conf->get('formatter') === 'markdown') {
1301             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1302         }
1303         $data = [
1304             'link' => $link,
1305             'link_is_new' => $link_is_new,
1306             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1307             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1308             'tags' => $tags,
1309             'default_private_links' => $conf->get('privacy.default_private_links', false),
1310         ];
1311         $pluginManager->executeHooks('render_editlink', $data);
1312
1313         foreach ($data as $key => $value) {
1314             $PAGE->assign($key, $value);
1315         }
1316
1317         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1318         $PAGE->renderPage('editlink');
1319         exit;
1320     }
1321
1322     if ($targetPage == Router::$PAGE_PINLINK) {
1323         if (! isset($_GET['id']) || !$bookmarkService->exists($_GET['id'])) {
1324             // FIXME! Use a proper error system.
1325             $msg = t('Invalid link ID provided');
1326             echo '<script>alert("'. $msg .'");document.location=\''. index_url($_SERVER) .'\';</script>';
1327             exit;
1328         }
1329         if (! $sessionManager->checkToken($_GET['token'])) {
1330             die('Wrong token.');
1331         }
1332
1333         $link = $bookmarkService->get($_GET['id']);
1334         $link->setSticky(! $link->isSticky());
1335         $bookmarkService->set($link);
1336         header('Location: '.index_url($_SERVER));
1337         exit;
1338     }
1339
1340     if ($targetPage == Router::$PAGE_EXPORT) {
1341         // Export bookmarks as a Netscape Bookmarks file
1342
1343         if (empty($_GET['selection'])) {
1344             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1345             $PAGE->renderPage('export');
1346             exit;
1347         }
1348
1349         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1350         $selection = $_GET['selection'];
1351         if (isset($_GET['prepend_note_url'])) {
1352             $prependNoteUrl = $_GET['prepend_note_url'];
1353         } else {
1354             $prependNoteUrl = false;
1355         }
1356
1357         try {
1358             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1359             $formatter = $factory->getFormatter('raw');
1360             $PAGE->assign(
1361                 'links',
1362                 NetscapeBookmarkUtils::filterAndFormat(
1363                     $bookmarkService,
1364                     $formatter,
1365                     $selection,
1366                     $prependNoteUrl,
1367                     index_url($_SERVER)
1368                 )
1369             );
1370         } catch (Exception $exc) {
1371             header('Content-Type: text/plain; charset=utf-8');
1372             echo $exc->getMessage();
1373             exit;
1374         }
1375         $now = new DateTime();
1376         header('Content-Type: text/html; charset=utf-8');
1377         header(
1378             'Content-disposition: attachment; filename=bookmarks_'
1379             .$selection.'_'.$now->format(Bookmark::LINK_DATE_FORMAT).'.html'
1380         );
1381         $PAGE->assign('date', $now->format(DateTime::RFC822));
1382         $PAGE->assign('eol', PHP_EOL);
1383         $PAGE->assign('selection', $selection);
1384         $PAGE->renderPage('export.bookmarks');
1385         exit;
1386     }
1387
1388     if ($targetPage == Router::$PAGE_IMPORT) {
1389         // Upload a Netscape bookmark dump to import its contents
1390
1391         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1392             // Show import dialog
1393             $PAGE->assign(
1394                 'maxfilesize',
1395                 get_max_upload_size(
1396                     ini_get('post_max_size'),
1397                     ini_get('upload_max_filesize'),
1398                     false
1399                 )
1400             );
1401             $PAGE->assign(
1402                 'maxfilesizeHuman',
1403                 get_max_upload_size(
1404                     ini_get('post_max_size'),
1405                     ini_get('upload_max_filesize'),
1406                     true
1407                 )
1408             );
1409             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1410             $PAGE->renderPage('import');
1411             exit;
1412         }
1413
1414         // Import bookmarks from an uploaded file
1415         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1416             // The file is too big or some form field may be missing.
1417             $msg = sprintf(
1418                 t(
1419                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1420                     .' (%s). Please upload in smaller chunks.'
1421                 ),
1422                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1423             );
1424             echo '<script>alert("'. $msg .'");document.location=\'./?do='.Router::$PAGE_IMPORT .'\';</script>';
1425             exit;
1426         }
1427         if (! $sessionManager->checkToken($_POST['token'])) {
1428             die('Wrong token.');
1429         }
1430         $status = NetscapeBookmarkUtils::import(
1431             $_POST,
1432             $_FILES,
1433             $bookmarkService,
1434             $conf,
1435             $history
1436         );
1437         echo '<script>alert("'.$status.'");document.location=\'./?do='
1438              .Router::$PAGE_IMPORT .'\';</script>';
1439         exit;
1440     }
1441
1442     // Plugin administration page
1443     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1444         $pluginMeta = $pluginManager->getPluginsMeta();
1445
1446         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1447         $enabledPlugins = array_filter($pluginMeta, function ($v) {
1448             return $v['order'] !== false;
1449         });
1450         // Load parameters.
1451         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1452         uasort(
1453             $enabledPlugins,
1454             function ($a, $b) {
1455                 return $a['order'] - $b['order'];
1456             }
1457         );
1458         $disabledPlugins = array_filter($pluginMeta, function ($v) {
1459             return $v['order'] === false;
1460         });
1461
1462         $PAGE->assign('enabledPlugins', $enabledPlugins);
1463         $PAGE->assign('disabledPlugins', $disabledPlugins);
1464         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1465         $PAGE->renderPage('pluginsadmin');
1466         exit;
1467     }
1468
1469     // Plugin administration form action
1470     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1471         try {
1472             if (isset($_POST['parameters_form'])) {
1473                 $pluginManager->executeHooks('save_plugin_parameters', $_POST);
1474                 unset($_POST['parameters_form']);
1475                 foreach ($_POST as $param => $value) {
1476                     $conf->set('plugins.'. $param, escape($value));
1477                 }
1478             } else {
1479                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1480             }
1481             $conf->write($loginManager->isLoggedIn());
1482             $history->updateSettings();
1483         } catch (Exception $e) {
1484             error_log(
1485                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1486                 $e->getMessage()
1487             );
1488
1489             // TODO: do not handle exceptions/errors in JS.
1490             echo '<script>alert("'
1491                 . $e->getMessage()
1492                 .'");document.location=\'./?do='
1493                 . Router::$PAGE_PLUGINSADMIN
1494                 .'\';</script>';
1495             exit;
1496         }
1497         header('Location: ./?do='. Router::$PAGE_PLUGINSADMIN);
1498         exit;
1499     }
1500
1501     // Get a fresh token
1502     if ($targetPage == Router::$GET_TOKEN) {
1503         header('Content-Type:text/plain');
1504         echo $sessionManager->generateToken();
1505         exit;
1506     }
1507
1508     // -------- Thumbnails Update
1509     if ($targetPage == Router::$PAGE_THUMBS_UPDATE) {
1510         $ids = [];
1511         foreach ($bookmarkService->search() as $bookmark) {
1512             // A note or not HTTP(S)
1513             if ($bookmark->isNote() || ! startsWith(strtolower($bookmark->getUrl()), 'http')) {
1514                 continue;
1515             }
1516             $ids[] = $bookmark->getId();
1517         }
1518         $PAGE->assign('ids', $ids);
1519         $PAGE->assign('pagetitle', t('Thumbnails update') .' - '. $conf->get('general.title', 'Shaarli'));
1520         $PAGE->renderPage('thumbnails');
1521         exit;
1522     }
1523
1524     // -------- Single Thumbnail Update
1525     if ($targetPage == Router::$AJAX_THUMB_UPDATE) {
1526         if (! isset($_POST['id']) || ! ctype_digit($_POST['id'])) {
1527             http_response_code(400);
1528             exit;
1529         }
1530         $id = (int) $_POST['id'];
1531         if (! $bookmarkService->exists($id)) {
1532             http_response_code(404);
1533             exit;
1534         }
1535         $thumbnailer = new Thumbnailer($conf);
1536         $bookmark = $bookmarkService->get($id);
1537         $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1538         $bookmarkService->set($bookmark);
1539
1540         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1541         echo json_encode($factory->getFormatter('raw')->format($bookmark));
1542         exit;
1543     }
1544
1545     // -------- Otherwise, simply display search form and bookmarks:
1546     showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
1547     exit;
1548 }
1549
1550 /**
1551  * Template for the list of bookmarks (<div id="linklist">)
1552  * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1553  *
1554  * @param pageBuilder              $PAGE          pageBuilder instance.
1555  * @param BookmarkServiceInterface $linkDb        LinkDB instance.
1556  * @param ConfigManager            $conf          Configuration Manager instance.
1557  * @param PluginManager            $pluginManager Plugin Manager instance.
1558  * @param LoginManager             $loginManager  LoginManager instance
1559  */
1560 function buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
1561 {
1562     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1563     $formatter = $factory->getFormatter();
1564
1565     // Used in templates
1566     if (isset($_GET['searchtags'])) {
1567         if (! empty($_GET['searchtags'])) {
1568             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1569         } else {
1570             $searchtags = false;
1571         }
1572     } else {
1573         $searchtags = '';
1574     }
1575     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1576
1577     // Smallhash filter
1578     if (! empty($_SERVER['QUERY_STRING'])
1579         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1580         try {
1581             $linksToDisplay = $linkDb->findByHash($_SERVER['QUERY_STRING']);
1582         } catch (BookmarkNotFoundException $e) {
1583             $PAGE->render404($e->getMessage());
1584             exit;
1585         }
1586     } else {
1587         // Filter bookmarks according search parameters.
1588         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : null;
1589         $request = [
1590             'searchtags' => $searchtags,
1591             'searchterm' => $searchterm,
1592         ];
1593         $linksToDisplay = $linkDb->search($request, $visibility, false, !empty($_SESSION['untaggedonly']));
1594     }
1595
1596     // ---- Handle paging.
1597     $keys = array();
1598     foreach ($linksToDisplay as $key => $value) {
1599         $keys[] = $key;
1600     }
1601
1602     // Select articles according to paging.
1603     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1604     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1605     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1606     $page = $page < 1 ? 1 : $page;
1607     $page = $page > $pagecount ? $pagecount : $page;
1608     // Start index.
1609     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1610     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1611
1612     $thumbnailsEnabled = $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE;
1613     if ($thumbnailsEnabled) {
1614         $thumbnailer = new Thumbnailer($conf);
1615     }
1616
1617     $linkDisp = array();
1618     while ($i<$end && $i<count($keys)) {
1619         $link = $formatter->format($linksToDisplay[$keys[$i]]);
1620
1621         // Logged in, thumbnails enabled, not a note,
1622         // and (never retrieved yet or no valid cache file)
1623         if ($loginManager->isLoggedIn()
1624             && $thumbnailsEnabled
1625             && !$linksToDisplay[$keys[$i]]->isNote()
1626             && $linksToDisplay[$keys[$i]]->getThumbnail() !== false
1627             && ! is_file($linksToDisplay[$keys[$i]]->getThumbnail())
1628         ) {
1629             $linksToDisplay[$keys[$i]]->setThumbnail($thumbnailer->get($link['url']));
1630             $linkDb->set($linksToDisplay[$keys[$i]], false);
1631             $updateDB = true;
1632             $link['thumbnail'] = $linksToDisplay[$keys[$i]]->getThumbnail();
1633         }
1634
1635         // Check for both signs of a note: starting with ? and 7 chars long.
1636 //        if ($link['url'][0] === '?' && strlen($link['url']) === 7) {
1637 //            $link['url'] = index_url($_SERVER) . $link['url'];
1638 //        }
1639
1640         $linkDisp[$keys[$i]] = $link;
1641         $i++;
1642     }
1643
1644     // If we retrieved new thumbnails, we update the database.
1645     if (!empty($updateDB)) {
1646         $linkDb->save();
1647     }
1648
1649     // Compute paging navigation
1650     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1651     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1652     $previous_page_url = '';
1653     if ($i != count($keys)) {
1654         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1655     }
1656     $next_page_url='';
1657     if ($page>1) {
1658         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1659     }
1660
1661     // Fill all template fields.
1662     $data = array(
1663         'previous_page_url' => $previous_page_url,
1664         'next_page_url' => $next_page_url,
1665         'page_current' => $page,
1666         'page_max' => $pagecount,
1667         'result_count' => count($linksToDisplay),
1668         'search_term' => $searchterm,
1669         'search_tags' => $searchtags,
1670         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1671         'links' => $linkDisp,
1672     );
1673
1674     // If there is only a single link, we change on-the-fly the title of the page.
1675     if (count($linksToDisplay) == 1) {
1676         $data['pagetitle'] = $linksToDisplay[$keys[0]]->getTitle() .' - '. $conf->get('general.title');
1677     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1678         $data['pagetitle'] = t('Search: ');
1679         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1680         $bracketWrap = function ($tag) {
1681             return '['. $tag .']';
1682         };
1683         $data['pagetitle'] .= ! empty($searchtags)
1684             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1685             : '';
1686         $data['pagetitle'] .= '- '. $conf->get('general.title');
1687     }
1688
1689     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1690
1691     foreach ($data as $key => $value) {
1692         $PAGE->assign($key, $value);
1693     }
1694
1695     return;
1696 }
1697
1698 /**
1699  * Installation
1700  * This function should NEVER be called if the file data/config.php exists.
1701  *
1702  * @param ConfigManager  $conf           Configuration Manager instance.
1703  * @param SessionManager $sessionManager SessionManager instance
1704  * @param LoginManager   $loginManager   LoginManager instance
1705  */
1706 function install($conf, $sessionManager, $loginManager)
1707 {
1708     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1709     if (endsWith($_SERVER['HTTP_HOST'], '.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) {
1710         mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions', 0705);
1711     }
1712
1713
1714     // This part makes sure sessions works correctly.
1715     // (Because on some hosts, session.save_path may not be set correctly,
1716     // or we may not have write access to it.)
1717     if (isset($_GET['test_session'])
1718         && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working')) {
1719         // Step 2: Check if data in session is correct.
1720         $msg = t(
1721             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1722             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1723             'and that you have write access to it.<br>'.
1724             'It currently points to %s.<br>'.
1725             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1726             'or any custom hostname without a dot causes cookie storage to fail. '.
1727             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1728         );
1729         $msg = sprintf($msg, session_save_path());
1730         echo $msg;
1731         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1732         die;
1733     }
1734     if (!isset($_SESSION['session_tested'])) {
1735         // Step 1 : Try to store data in session and reload page.
1736         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1737         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1738     }
1739     if (isset($_GET['test_session'])) {
1740         // Step 3: Sessions are OK. Remove test parameter from URL.
1741         header('Location: '.index_url($_SERVER));
1742     }
1743
1744
1745     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) {
1746         $tz = 'UTC';
1747         if (!empty($_POST['continent']) && !empty($_POST['city'])
1748             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1749         ) {
1750             $tz = $_POST['continent'].'/'.$_POST['city'];
1751         }
1752         $conf->set('general.timezone', $tz);
1753         $login = $_POST['setlogin'];
1754         $conf->set('credentials.login', $login);
1755         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1756         $conf->set('credentials.salt', $salt);
1757         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1758         if (!empty($_POST['title'])) {
1759             $conf->set('general.title', escape($_POST['title']));
1760         } else {
1761             $conf->set('general.title', 'Shared bookmarks on '.escape(index_url($_SERVER)));
1762         }
1763         $conf->set('translation.language', escape($_POST['language']));
1764         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1765         $conf->set('api.enabled', !empty($_POST['enableApi']));
1766         $conf->set(
1767             'api.secret',
1768             generate_api_secret(
1769                 $conf->get('credentials.login'),
1770                 $conf->get('credentials.salt')
1771             )
1772         );
1773         try {
1774             // Everything is ok, let's create config file.
1775             $conf->write($loginManager->isLoggedIn());
1776         } catch (Exception $e) {
1777             error_log(
1778                 'ERROR while writing config file after installation.' . PHP_EOL .
1779                     $e->getMessage()
1780             );
1781
1782             // TODO: do not handle exceptions/errors in JS.
1783             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1784             exit;
1785         }
1786
1787         $history = new History($conf->get('resource.history'));
1788         $bookmarkService = new BookmarkFileService($conf, $history, true);
1789         if ($bookmarkService->count() === 0) {
1790             $bookmarkService->initialize();
1791         }
1792
1793         echo '<script>alert('
1794             .'"Shaarli is now configured. '
1795             .'Please enter your login/password and start shaaring your bookmarks!"'
1796             .');document.location=\'./login\';</script>';
1797         exit;
1798     }
1799
1800     $PAGE = new PageBuilder($conf, $_SESSION, null, $sessionManager->generateToken());
1801     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1802     $PAGE->assign('continents', $continents);
1803     $PAGE->assign('cities', $cities);
1804     $PAGE->assign('languages', Languages::getAvailableLanguages());
1805     $PAGE->renderPage('install');
1806     exit;
1807 }
1808
1809 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
1810     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
1811 }
1812
1813 try {
1814     $history = new History($conf->get('resource.history'));
1815 } catch (Exception $e) {
1816     die($e->getMessage());
1817 }
1818
1819 $linkDb = new BookmarkFileService($conf, $history, $loginManager->isLoggedIn());
1820
1821 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) {
1822     showDailyRSS($linkDb, $conf, $loginManager);
1823     exit;
1824 }
1825
1826 $containerBuilder = new ContainerBuilder($conf, $sessionManager, $loginManager, WEB_PATH);
1827 $container = $containerBuilder->build();
1828 $app = new App($container);
1829
1830 // REST API routes
1831 $app->group('/api/v1', function () {
1832     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
1833     $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
1834     $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
1835     $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
1836     $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
1837     $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
1838
1839     $this->get('/tags', '\Shaarli\Api\Controllers\Tags:getTags')->setName('getTags');
1840     $this->get('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:getTag')->setName('getTag');
1841     $this->put('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:putTag')->setName('putTag');
1842     $this->delete('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:deleteTag')->setName('deleteTag');
1843
1844     $this->get('/history', '\Shaarli\Api\Controllers\HistoryController:getHistory')->setName('getHistory');
1845 })->add('\Shaarli\Api\ApiMiddleware');
1846
1847 $app->group('', function () {
1848     $this->get('/login', '\Shaarli\Front\Controller\LoginController:index')->setName('login');
1849     $this->get('/logout', '\Shaarli\Front\Controller\LogoutController:index')->setName('logout');
1850     $this->get('/picture-wall', '\Shaarli\Front\Controller\PictureWallController:index')->setName('picwall');
1851     $this->get('/tag-cloud', '\Shaarli\Front\Controller\TagCloudController:cloud')->setName('tagcloud');
1852     $this->get('/tag-list', '\Shaarli\Front\Controller\TagCloudController:list')->setName('taglist');
1853     $this->get('/add-tag/{newTag}', '\Shaarli\Front\Controller\TagController:addTag')->setName('add-tag');
1854 })->add('\Shaarli\Front\ShaarliMiddleware');
1855
1856 $response = $app->run(true);
1857
1858 // Hack to make Slim and Shaarli router work together:
1859 // If a Slim route isn't found and NOT API call, we call renderPage().
1860 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
1861     // We use UTF-8 for proper international characters handling.
1862     header('Content-Type: text/html; charset=utf-8');
1863     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
1864 } else {
1865     $response = $response
1866         ->withHeader('Access-Control-Allow-Origin', '*')
1867         ->withHeader(
1868             'Access-Control-Allow-Headers',
1869             'X-Requested-With, Content-Type, Accept, Origin, Authorization'
1870         )
1871         ->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
1872     $app->respond($response);
1873 }