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($_SERVER['QUERY_STRING'], 'do=logout')) {
 607         invalidateCaches($conf->get('resource.page_cache'));
 608         $sessionManager->logout();
 609         setcookie(LoginManager::$STAY_SIGNED_IN_COOKIE, 'false', 0, WEB_PATH);
 610         header('Location: ?');
 611         exit;
 612     }
 613
 614     // -------- Picture wall
 615     if ($targetPage == Router::$PAGE_PICWALL) {
 616         header('Location: ./picture-wall');
 617         exit;
 618     }
 619
 620     // -------- Tag cloud
 621     if ($targetPage == Router::$PAGE_TAGCLOUD) {
 622         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 623         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 624         $tags = $bookmarkService->bookmarksCountPerTag($filteringTags, $visibility);
 625
 626         // We sort tags alphabetically, then choose a font size according to count.
 627         // First, find max value.
 628         $maxcount = 0;
 629         foreach ($tags as $value) {
 630             $maxcount = max($maxcount, $value);
 631         }
 632
 633         alphabetical_sort($tags, false, true);
 634
 635         $logMaxCount = $maxcount > 1 ? log($maxcount, 30) : 1;
 636         $tagList = array();
 637         foreach ($tags as $key => $value) {
 638             if (in_array($key, $filteringTags)) {
 639                 continue;
 640             }
 641             // Tag font size scaling:
 642             //   default 15 and 30 logarithm bases affect scaling,
 643             //   2.2 and 0.8 are arbitrary font sizes in em.
 644             $size = log($value, 15) / $logMaxCount * 2.2 + 0.8;
 645             $tagList[$key] = array(
 646                 'count' => $value,
 647                 'size' => number_format($size, 2, '.', ''),
 648             );
 649         }
 650
 651         $searchTags = implode(' ', escape($filteringTags));
 652         $data = array(
 653             'search_tags' => $searchTags,
 654             'tags' => $tagList,
 655         );
 656         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => $loginManager->isLoggedIn()));
 657
 658         foreach ($data as $key => $value) {
 659             $PAGE->assign($key, $value);
 660         }
 661
 662         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 663         $PAGE->assign('pagetitle', $searchTags. t('Tag cloud') .' - '. $conf->get('general.title', 'Shaarli'));
 664         $PAGE->renderPage('tag.cloud');
 665         exit;
 666     }
 667
 668     // -------- Tag list
 669     if ($targetPage == Router::$PAGE_TAGLIST) {
 670         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 671         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 672         $tags = $bookmarkService->bookmarksCountPerTag($filteringTags, $visibility);
 673         foreach ($filteringTags as $tag) {
 674             if (array_key_exists($tag, $tags)) {
 675                 unset($tags[$tag]);
 676             }
 677         }
 678
 679         if (! empty($_GET['sort']) && $_GET['sort'] === 'alpha') {
 680             alphabetical_sort($tags, false, true);
 681         }
 682
 683         $searchTags = implode(' ', escape($filteringTags));
 684         $data = [
 685             'search_tags' => $searchTags,
 686             'tags' => $tags,
 687         ];
 688         $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => $loginManager->isLoggedIn()]);
 689
 690         foreach ($data as $key => $value) {
 691             $PAGE->assign($key, $value);
 692         }
 693
 694         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 695         $PAGE->assign('pagetitle', $searchTags . t('Tag list') .' - '. $conf->get('general.title', 'Shaarli'));
 696         $PAGE->renderPage('tag.list');
 697         exit;
 698     }
 699
 700     // Daily page.
 701     if ($targetPage == Router::$PAGE_DAILY) {
 702         showDaily($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 703     }
 704
 705     // ATOM and RSS feed.
 706     if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
 707         $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
 708         header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
 709
 710         // Cache system
 711         $query = $_SERVER['QUERY_STRING'];
 712         $cache = new CachedPage(
 713             $conf->get('resource.page_cache'),
 714             page_url($_SERVER),
 715             startsWith($query, 'do='. $targetPage) && !$loginManager->isLoggedIn()
 716         );
 717         $cached = $cache->cachedVersion();
 718         if (!empty($cached)) {
 719             echo $cached;
 720             exit;
 721         }
 722
 723         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
 724         // Generate data.
 725         $feedGenerator = new FeedBuilder(
 726             $bookmarkService,
 727             $factory->getFormatter(),
 728             $feedType,
 729             $_SERVER,
 730             $_GET,
 731             $loginManager->isLoggedIn()
 732         );
 733         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 734         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 735         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 736         $data = $feedGenerator->buildData();
 737
 738         // Process plugin hook.
 739         $pluginManager->executeHooks('render_feed', $data, array(
 740             'loggedin' => $loginManager->isLoggedIn(),
 741             'target' => $targetPage,
 742         ));
 743
 744         // Render the template.
 745         $PAGE->assignAll($data);
 746         $PAGE->renderPage('feed.'. $feedType);
 747         $cache->cache(ob_get_contents());
 748         ob_end_flush();
 749         exit;
 750     }
 751
 752     // Display opensearch plugin (XML)
 753     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 754         header('Content-Type: application/xml; charset=utf-8');
 755         $PAGE->assign('serverurl', index_url($_SERVER));
 756         $PAGE->renderPage('opensearch');
 757         exit;
 758     }
 759
 760     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 761     if (isset($_GET['addtag'])) {
 762         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
 763         if (empty($_SERVER['HTTP_REFERER'])) {
 764             // In case browser does not send HTTP_REFERER
 765             header('Location: ?searchtags='.urlencode($_GET['addtag']));
 766             exit;
 767         }
 768         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 769
 770         // Prevent redirection loop
 771         if (isset($params['addtag'])) {
 772             unset($params['addtag']);
 773         }
 774
 775         // Check if this tag is already in the search query and ignore it if it is.
 776         // Each tag is always separated by a space
 777         if (isset($params['searchtags'])) {
 778             $current_tags = explode(' ', $params['searchtags']);
 779         } else {
 780             $current_tags = array();
 781         }
 782         $addtag = true;
 783         foreach ($current_tags as $value) {
 784             if ($value === $_GET['addtag']) {
 785                 $addtag = false;
 786                 break;
 787             }
 788         }
 789         // Append the tag if necessary
 790         if (empty($params['searchtags'])) {
 791             $params['searchtags'] = trim($_GET['addtag']);
 792         } elseif ($addtag) {
 793             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
 794         }
 795
 796         // We also remove page (keeping the same page has no sense, since the
 797         // results are different)
 798         unset($params['page']);
 799
 800         header('Location: ?'.http_build_query($params));
 801         exit;
 802     }
 803
 804     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 805     if (isset($_GET['removetag'])) {
 806         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 807         if (empty($_SERVER['HTTP_REFERER'])) {
 808             header('Location: ?');
 809             exit;
 810         }
 811
 812         // In case browser does not send HTTP_REFERER
 813         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 814
 815         // Prevent redirection loop
 816         if (isset($params['removetag'])) {
 817             unset($params['removetag']);
 818         }
 819
 820         if (isset($params['searchtags'])) {
 821             $tags = explode(' ', $params['searchtags']);
 822             // Remove value from array $tags.
 823             $tags = array_diff($tags, array($_GET['removetag']));
 824             $params['searchtags'] = implode(' ', $tags);
 825
 826             if (empty($params['searchtags'])) {
 827                 unset($params['searchtags']);
 828             }
 829
 830             // We also remove page (keeping the same page has no sense, since
 831             // the results are different)
 832             unset($params['page']);
 833         }
 834         header('Location: ?'.http_build_query($params));
 835         exit;
 836     }
 837
 838     // -------- User wants to change the number of bookmarks per page (linksperpage=...)
 839     if (isset($_GET['linksperpage'])) {
 840         if (is_numeric($_GET['linksperpage'])) {
 841             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 842         }
 843
 844         if (! empty($_SERVER['HTTP_REFERER'])) {
 845             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 846         } else {
 847             $location = '?';
 848         }
 849         header('Location: '. $location);
 850         exit;
 851     }
 852
 853     // -------- User wants to see only private bookmarks (toggle)
 854     if (isset($_GET['visibility'])) {
 855         if ($_GET['visibility'] === 'private') {
 856             // Visibility not set or not already private, set private, otherwise reset it
 857             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 858                 // See only private bookmarks
 859                 $_SESSION['visibility'] = 'private';
 860             } else {
 861                 unset($_SESSION['visibility']);
 862             }
 863         } elseif ($_GET['visibility'] === 'public') {
 864             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 865                 // See only public bookmarks
 866                 $_SESSION['visibility'] = 'public';
 867             } else {
 868                 unset($_SESSION['visibility']);
 869             }
 870         }
 871
 872         if (! empty($_SERVER['HTTP_REFERER'])) {
 873             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 874         } else {
 875             $location = '?';
 876         }
 877         header('Location: '. $location);
 878         exit;
 879     }
 880
 881     // -------- User wants to see only untagged bookmarks (toggle)
 882     if (isset($_GET['untaggedonly'])) {
 883         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 884
 885         if (! empty($_SERVER['HTTP_REFERER'])) {
 886             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 887         } else {
 888             $location = '?';
 889         }
 890         header('Location: '. $location);
 891         exit;
 892     }
 893
 894     // -------- Handle other actions allowed for non-logged in users:
 895     if (!$loginManager->isLoggedIn()) {
 896         // User tries to post new link but is not logged in:
 897         // Show login screen, then redirect to ?post=...
 898         if (isset($_GET['post'])) {
 899             header( // Redirect to login page, then back to post link.
 900                 'Location: /login?post='.urlencode($_GET['post']).
 901                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 902                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 903                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 904                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 905             );
 906             exit;
 907         }
 908
 909         showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
 910         if (isset($_GET['edit_link'])) {
 911             header('Location: /login?edit_link='. escape($_GET['edit_link']));
 912             exit;
 913         }
 914
 915         exit; // Never remove this one! All operations below are reserved for logged in user.
 916     }
 917
 918     // -------- All other functions are reserved for the registered user:
 919
 920     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 921     if ($targetPage == Router::$PAGE_TOOLS) {
 922         $data = [
 923             'pageabsaddr' => index_url($_SERVER),
 924             'sslenabled' => is_https($_SERVER),
 925         ];
 926         $pluginManager->executeHooks('render_tools', $data);
 927
 928         foreach ($data as $key => $value) {
 929             $PAGE->assign($key, $value);
 930         }
 931
 932         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 933         $PAGE->renderPage('tools');
 934         exit;
 935     }
 936
 937     // -------- User wants to change his/her password.
 938     if ($targetPage == Router::$PAGE_CHANGEPASSWORD) {
 939         if ($conf->get('security.open_shaarli')) {
 940             die(t('You are not supposed to change a password on an Open Shaarli.'));
 941         }
 942
 943         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) {
 944             if (!$sessionManager->checkToken($_POST['token'])) {
 945                 die(t('Wrong token.')); // Go away!
 946             }
 947
 948             // Make sure old password is correct.
 949             $oldhash = sha1(
 950                 $_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt')
 951             );
 952             if ($oldhash != $conf->get('credentials.hash')) {
 953                 echo '<script>alert("'
 954                     . t('The old password is not correct.')
 955                     .'");document.location=\'./?do=changepasswd\';</script>';
 956                 exit;
 957             }
 958             // Save new password
 959             // Salt renders rainbow-tables attacks useless.
 960             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 961             $conf->set(
 962                 'credentials.hash',
 963                 sha1(
 964                     $_POST['setpassword']
 965                     . $conf->get('credentials.login')
 966                     . $conf->get('credentials.salt')
 967                 )
 968             );
 969             try {
 970                 $conf->write($loginManager->isLoggedIn());
 971             } catch (Exception $e) {
 972                 error_log(
 973                     'ERROR while writing config file after changing password.' . PHP_EOL .
 974                     $e->getMessage()
 975                 );
 976
 977                 // TODO: do not handle exceptions/errors in JS.
 978                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'./?do=tools\';</script>';
 979                 exit;
 980             }
 981             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'./?do=tools\';</script>';
 982             exit;
 983         } else {
 984             // show the change password form.
 985             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
 986             $PAGE->renderPage('changepassword');
 987             exit;
 988         }
 989     }
 990
 991     // -------- User wants to change configuration
 992     if ($targetPage == Router::$PAGE_CONFIGURE) {
 993         if (!empty($_POST['title'])) {
 994             if (!$sessionManager->checkToken($_POST['token'])) {
 995                 die(t('Wrong token.')); // Go away!
 996             }
 997             $tz = 'UTC';
 998             if (!empty($_POST['continent']) && !empty($_POST['city'])
 999                 && isTimeZoneValid($_POST['continent'], $_POST['city'])
1000             ) {
1001                 $tz = $_POST['continent'] . '/' . $_POST['city'];
1002             }
1003             $conf->set('general.timezone', $tz);
1004             $conf->set('general.title', escape($_POST['title']));
1005             $conf->set('general.header_link', escape($_POST['titleLink']));
1006             $conf->set('general.retrieve_description', !empty($_POST['retrieveDescription']));
1007             $conf->set('resource.theme', escape($_POST['theme']));
1008             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
1009             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
1010             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
1011             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1012             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
1013             $conf->set('api.enabled', !empty($_POST['enableApi']));
1014             $conf->set('api.secret', escape($_POST['apiSecret']));
1015             $conf->set('formatter', escape($_POST['formatter']));
1016
1017             if (! empty($_POST['language'])) {
1018                 $conf->set('translation.language', escape($_POST['language']));
1019             }
1020
1021             $thumbnailsMode = extension_loaded('gd') ? $_POST['enableThumbnails'] : Thumbnailer::MODE_NONE;
1022             if ($thumbnailsMode !== Thumbnailer::MODE_NONE
1023                 && $thumbnailsMode !== $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE)
1024             ) {
1025                 $_SESSION['warnings'][] = t(
1026                     'You have enabled or changed thumbnails mode. '
1027                     .'<a href="./?do=thumbs_update">Please synchronize them</a>.'
1028                 );
1029             }
1030             $conf->set('thumbnails.mode', $thumbnailsMode);
1031
1032             try {
1033                 $conf->write($loginManager->isLoggedIn());
1034                 $history->updateSettings();
1035                 $pageCacheManager->invalidateCaches();
1036             } catch (Exception $e) {
1037                 error_log(
1038                     'ERROR while writing config file after configuration update.' . PHP_EOL .
1039                     $e->getMessage()
1040                 );
1041
1042                 // TODO: do not handle exceptions/errors in JS.
1043                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'./?do=configure\';</script>';
1044                 exit;
1045             }
1046             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'./?do=configure\';</script>';
1047             exit;
1048         } else {
1049             // Show the configuration form.
1050             $PAGE->assign('title', $conf->get('general.title'));
1051             $PAGE->assign('theme', $conf->get('resource.theme'));
1052             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
1053             $PAGE->assign('formatter_available', ['default', 'markdown']);
1054             list($continents, $cities) = generateTimeZoneData(
1055                 timezone_identifiers_list(),
1056                 $conf->get('general.timezone')
1057             );
1058             $PAGE->assign('continents', $continents);
1059             $PAGE->assign('cities', $cities);
1060             $PAGE->assign('retrieve_description', $conf->get('general.retrieve_description'));
1061             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
1062             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
1063             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
1064             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
1065             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
1066             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
1067             $PAGE->assign('api_secret', $conf->get('api.secret'));
1068             $PAGE->assign('languages', Languages::getAvailableLanguages());
1069             $PAGE->assign('gd_enabled', extension_loaded('gd'));
1070             $PAGE->assign('thumbnails_mode', $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE));
1071             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
1072             $PAGE->renderPage('configure');
1073             exit;
1074         }
1075     }
1076
1077     // -------- User wants to rename a tag or delete it
1078     if ($targetPage == Router::$PAGE_CHANGETAG) {
1079         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1080             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
1081             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
1082             $PAGE->renderPage('changetag');
1083             exit;
1084         }
1085
1086         if (!$sessionManager->checkToken($_POST['token'])) {
1087             die(t('Wrong token.'));
1088         }
1089
1090         $toTag = isset($_POST['totag']) ? escape($_POST['totag']) : null;
1091         $fromTag = escape($_POST['fromtag']);
1092         $count = 0;
1093         $bookmarks = $bookmarkService->search(['searchtags' => $fromTag], BookmarkFilter::$ALL, true);
1094         foreach ($bookmarks as $bookmark) {
1095             if ($toTag) {
1096                 $bookmark->renameTag($fromTag, $toTag);
1097             } else {
1098                 $bookmark->deleteTag($fromTag);
1099             }
1100             $bookmarkService->set($bookmark, false);
1101             $history->updateLink($bookmark);
1102             $count++;
1103         }
1104         $bookmarkService->save();
1105         $delete = empty($_POST['totag']);
1106         $redirect = $delete ? './do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
1107         $alert = $delete
1108             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d bookmarks.', $count), $count)
1109             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d bookmarks.', $count), $count);
1110         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
1111         exit;
1112     }
1113
1114     // -------- User wants to add a link without using the bookmarklet: Show form.
1115     if ($targetPage == Router::$PAGE_ADDLINK) {
1116         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
1117         $PAGE->renderPage('addlink');
1118         exit;
1119     }
1120
1121     // -------- User clicked the "Save" button when editing a link: Save link to database.
1122     if (isset($_POST['save_edit'])) {
1123         // Go away!
1124         if (! $sessionManager->checkToken($_POST['token'])) {
1125             die(t('Wrong token.'));
1126         }
1127
1128         // lf_id should only be present if the link exists.
1129         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : null;
1130         if ($id && $bookmarkService->exists($id)) {
1131             // Edit
1132             $bookmark = $bookmarkService->get($id);
1133         } else {
1134             // New link
1135             $bookmark = new Bookmark();
1136         }
1137
1138         $bookmark->setTitle($_POST['lf_title']);
1139         $bookmark->setDescription($_POST['lf_description']);
1140         $bookmark->setUrl($_POST['lf_url'], $conf->get('security.allowed_protocols'));
1141         $bookmark->setPrivate(isset($_POST['lf_private']));
1142         $bookmark->setTagsString($_POST['lf_tags']);
1143
1144         if ($conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
1145             && ! $bookmark->isNote()
1146         ) {
1147             $thumbnailer = new Thumbnailer($conf);
1148             $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1149         }
1150         $bookmarkService->addOrSet($bookmark, false);
1151
1152         // To preserve backward compatibility with 3rd parties, plugins still use arrays
1153         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1154         $formatter = $factory->getFormatter('raw');
1155         $data = $formatter->format($bookmark);
1156         $pluginManager->executeHooks('save_link', $data);
1157
1158         $bookmark->fromArray($data);
1159         $bookmarkService->set($bookmark);
1160
1161         // If we are called from the bookmarklet, we must close the popup:
1162         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1163             echo '<script>self.close();</script>';
1164             exit;
1165         }
1166
1167         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1168         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1169         // Scroll to the link which has been edited.
1170         $location .= '#' . $bookmark->getShortUrl();
1171         // After saving the link, redirect to the page the user was on.
1172         header('Location: '. $location);
1173         exit;
1174     }
1175
1176     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1177     if ($targetPage == Router::$PAGE_DELETELINK) {
1178         if (! $sessionManager->checkToken($_GET['token'])) {
1179             die(t('Wrong token.'));
1180         }
1181
1182         $ids = trim($_GET['lf_linkdate']);
1183         if (strpos($ids, ' ') !== false) {
1184             // multiple, space-separated ids provided
1185             $ids = array_values(array_filter(
1186                 preg_split('/\s+/', escape($ids)),
1187                 function ($item) {
1188                     return $item !== '';
1189                 }
1190             ));
1191         } else {
1192             // only a single id provided
1193             $shortUrl = $bookmarkService->get($ids)->getShortUrl();
1194             $ids = [$ids];
1195         }
1196         // assert at least one id is given
1197         if (!count($ids)) {
1198             die('no id provided');
1199         }
1200         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1201         $formatter = $factory->getFormatter('raw');
1202         foreach ($ids as $id) {
1203             $id = (int) escape($id);
1204             $bookmark = $bookmarkService->get($id);
1205             $data = $formatter->format($bookmark);
1206             $pluginManager->executeHooks('delete_link', $data);
1207             $bookmarkService->remove($bookmark, false);
1208         }
1209         $bookmarkService->save();
1210
1211         // If we are called from the bookmarklet, we must close the popup:
1212         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1213             echo '<script>self.close();</script>';
1214             exit;
1215         }
1216
1217         $location = '?';
1218         if (isset($_SERVER['HTTP_REFERER'])) {
1219             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
1220             $location = generateLocation(
1221                 $_SERVER['HTTP_REFERER'],
1222                 $_SERVER['HTTP_HOST'],
1223                 ['delete_link', 'edit_link', ! empty($shortUrl) ? $shortUrl : null]
1224             );
1225         }
1226
1227         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1228         exit;
1229     }
1230
1231     // -------- User clicked either "Set public" or "Set private" bulk operation
1232     if ($targetPage == Router::$PAGE_CHANGE_VISIBILITY) {
1233         if (! $sessionManager->checkToken($_GET['token'])) {
1234             die(t('Wrong token.'));
1235         }
1236
1237         $ids = trim($_GET['ids']);
1238         if (strpos($ids, ' ') !== false) {
1239             // multiple, space-separated ids provided
1240             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
1241         } else {
1242             // only a single id provided
1243             $ids = [$ids];
1244         }
1245
1246         // assert at least one id is given
1247         if (!count($ids)) {
1248             die('no id provided');
1249         }
1250         // assert that the visibility is valid
1251         if (!isset($_GET['newVisibility']) || !in_array($_GET['newVisibility'], ['public', 'private'])) {
1252             die('invalid visibility');
1253         } else {
1254             $private = $_GET['newVisibility'] === 'private';
1255         }
1256         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1257         $formatter = $factory->getFormatter('raw');
1258         foreach ($ids as $id) {
1259             $id = (int) escape($id);
1260             $bookmark = $bookmarkService->get($id);
1261             $bookmark->setPrivate($private);
1262
1263             // To preserve backward compatibility with 3rd parties, plugins still use arrays
1264             $data = $formatter->format($bookmark);
1265             $pluginManager->executeHooks('save_link', $data);
1266             $bookmark->fromArray($data);
1267
1268             $bookmarkService->set($bookmark);
1269         }
1270         $bookmarkService->save();
1271
1272         $location = '?';
1273         if (isset($_SERVER['HTTP_REFERER'])) {
1274             $location = generateLocation(
1275                 $_SERVER['HTTP_REFERER'],
1276                 $_SERVER['HTTP_HOST']
1277             );
1278         }
1279         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1280         exit;
1281     }
1282
1283     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1284     if (isset($_GET['edit_link'])) {
1285         $id = (int) escape($_GET['edit_link']);
1286         try {
1287             $link = $bookmarkService->get($id);  // Read database
1288         } catch (BookmarkNotFoundException $e) {
1289             // Link not found in database.
1290             header('Location: ?');
1291             exit;
1292         }
1293
1294         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1295         $formatter = $factory->getFormatter('raw');
1296         $formattedLink = $formatter->format($link);
1297         $tags = $bookmarkService->bookmarksCountPerTag();
1298         if ($conf->get('formatter') === 'markdown') {
1299             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1300         }
1301         $data = array(
1302             'link' => $formattedLink,
1303             'link_is_new' => false,
1304             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1305             'tags' => $tags,
1306         );
1307         $pluginManager->executeHooks('render_editlink', $data);
1308
1309         foreach ($data as $key => $value) {
1310             $PAGE->assign($key, $value);
1311         }
1312
1313         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1314         $PAGE->renderPage('editlink');
1315         exit;
1316     }
1317
1318     // -------- User want to post a new link: Display link edit form.
1319     if (isset($_GET['post'])) {
1320         $url = cleanup_url($_GET['post']);
1321
1322         $link_is_new = false;
1323         // Check if URL is not already in database (in this case, we will edit the existing link)
1324         $bookmark = $bookmarkService->findByUrl($url);
1325         if (! $bookmark) {
1326             $link_is_new = true;
1327             // Get title if it was provided in URL (by the bookmarklet).
1328             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1329             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1330             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1331             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1332             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1333
1334             // If this is an HTTP(S) link, we try go get the page to extract
1335             // the title (otherwise we will to straight to the edit form.)
1336             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1337                 $retrieveDescription = $conf->get('general.retrieve_description');
1338                 // Short timeout to keep the application responsive
1339                 // The callback will fill $charset and $title with data from the downloaded page.
1340                 get_http_response(
1341                     $url,
1342                     $conf->get('general.download_timeout', 30),
1343                     $conf->get('general.download_max_size', 4194304),
1344                     get_curl_download_callback($charset, $title, $description, $tags, $retrieveDescription)
1345                 );
1346                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1347                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1348                 }
1349             }
1350
1351             if ($url == '') {
1352                 $title = $conf->get('general.default_note_title', t('Note: '));
1353             }
1354             $url = escape($url);
1355             $title = escape($title);
1356
1357             $link = [
1358                 'title' => $title,
1359                 'url' => $url,
1360                 'description' => $description,
1361                 'tags' => $tags,
1362                 'private' => $private,
1363             ];
1364         } else {
1365             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1366             $formatter = $factory->getFormatter('raw');
1367             $link = $formatter->format($bookmark);
1368         }
1369
1370         $tags = $bookmarkService->bookmarksCountPerTag();
1371         if ($conf->get('formatter') === 'markdown') {
1372             $tags[BookmarkMarkdownFormatter::NO_MD_TAG] = 1;
1373         }
1374         $data = [
1375             'link' => $link,
1376             'link_is_new' => $link_is_new,
1377             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1378             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1379             'tags' => $tags,
1380             'default_private_links' => $conf->get('privacy.default_private_links', false),
1381         ];
1382         $pluginManager->executeHooks('render_editlink', $data);
1383
1384         foreach ($data as $key => $value) {
1385             $PAGE->assign($key, $value);
1386         }
1387
1388         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1389         $PAGE->renderPage('editlink');
1390         exit;
1391     }
1392
1393     if ($targetPage == Router::$PAGE_PINLINK) {
1394         if (! isset($_GET['id']) || !$bookmarkService->exists($_GET['id'])) {
1395             // FIXME! Use a proper error system.
1396             $msg = t('Invalid link ID provided');
1397             echo '<script>alert("'. $msg .'");document.location=\''. index_url($_SERVER) .'\';</script>';
1398             exit;
1399         }
1400         if (! $sessionManager->checkToken($_GET['token'])) {
1401             die('Wrong token.');
1402         }
1403
1404         $link = $bookmarkService->get($_GET['id']);
1405         $link->setSticky(! $link->isSticky());
1406         $bookmarkService->set($link);
1407         header('Location: '.index_url($_SERVER));
1408         exit;
1409     }
1410
1411     if ($targetPage == Router::$PAGE_EXPORT) {
1412         // Export bookmarks as a Netscape Bookmarks file
1413
1414         if (empty($_GET['selection'])) {
1415             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1416             $PAGE->renderPage('export');
1417             exit;
1418         }
1419
1420         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1421         $selection = $_GET['selection'];
1422         if (isset($_GET['prepend_note_url'])) {
1423             $prependNoteUrl = $_GET['prepend_note_url'];
1424         } else {
1425             $prependNoteUrl = false;
1426         }
1427
1428         try {
1429             $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1430             $formatter = $factory->getFormatter('raw');
1431             $PAGE->assign(
1432                 'links',
1433                 NetscapeBookmarkUtils::filterAndFormat(
1434                     $bookmarkService,
1435                     $formatter,
1436                     $selection,
1437                     $prependNoteUrl,
1438                     index_url($_SERVER)
1439                 )
1440             );
1441         } catch (Exception $exc) {
1442             header('Content-Type: text/plain; charset=utf-8');
1443             echo $exc->getMessage();
1444             exit;
1445         }
1446         $now = new DateTime();
1447         header('Content-Type: text/html; charset=utf-8');
1448         header(
1449             'Content-disposition: attachment; filename=bookmarks_'
1450             .$selection.'_'.$now->format(Bookmark::LINK_DATE_FORMAT).'.html'
1451         );
1452         $PAGE->assign('date', $now->format(DateTime::RFC822));
1453         $PAGE->assign('eol', PHP_EOL);
1454         $PAGE->assign('selection', $selection);
1455         $PAGE->renderPage('export.bookmarks');
1456         exit;
1457     }
1458
1459     if ($targetPage == Router::$PAGE_IMPORT) {
1460         // Upload a Netscape bookmark dump to import its contents
1461
1462         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1463             // Show import dialog
1464             $PAGE->assign(
1465                 'maxfilesize',
1466                 get_max_upload_size(
1467                     ini_get('post_max_size'),
1468                     ini_get('upload_max_filesize'),
1469                     false
1470                 )
1471             );
1472             $PAGE->assign(
1473                 'maxfilesizeHuman',
1474                 get_max_upload_size(
1475                     ini_get('post_max_size'),
1476                     ini_get('upload_max_filesize'),
1477                     true
1478                 )
1479             );
1480             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1481             $PAGE->renderPage('import');
1482             exit;
1483         }
1484
1485         // Import bookmarks from an uploaded file
1486         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1487             // The file is too big or some form field may be missing.
1488             $msg = sprintf(
1489                 t(
1490                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1491                     .' (%s). Please upload in smaller chunks.'
1492                 ),
1493                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1494             );
1495             echo '<script>alert("'. $msg .'");document.location=\'./?do='.Router::$PAGE_IMPORT .'\';</script>';
1496             exit;
1497         }
1498         if (! $sessionManager->checkToken($_POST['token'])) {
1499             die('Wrong token.');
1500         }
1501         $status = NetscapeBookmarkUtils::import(
1502             $_POST,
1503             $_FILES,
1504             $bookmarkService,
1505             $conf,
1506             $history
1507         );
1508         echo '<script>alert("'.$status.'");document.location=\'./?do='
1509              .Router::$PAGE_IMPORT .'\';</script>';
1510         exit;
1511     }
1512
1513     // Plugin administration page
1514     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1515         $pluginMeta = $pluginManager->getPluginsMeta();
1516
1517         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1518         $enabledPlugins = array_filter($pluginMeta, function ($v) {
1519             return $v['order'] !== false;
1520         });
1521         // Load parameters.
1522         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1523         uasort(
1524             $enabledPlugins,
1525             function ($a, $b) {
1526                 return $a['order'] - $b['order'];
1527             }
1528         );
1529         $disabledPlugins = array_filter($pluginMeta, function ($v) {
1530             return $v['order'] === false;
1531         });
1532
1533         $PAGE->assign('enabledPlugins', $enabledPlugins);
1534         $PAGE->assign('disabledPlugins', $disabledPlugins);
1535         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1536         $PAGE->renderPage('pluginsadmin');
1537         exit;
1538     }
1539
1540     // Plugin administration form action
1541     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1542         try {
1543             if (isset($_POST['parameters_form'])) {
1544                 $pluginManager->executeHooks('save_plugin_parameters', $_POST);
1545                 unset($_POST['parameters_form']);
1546                 foreach ($_POST as $param => $value) {
1547                     $conf->set('plugins.'. $param, escape($value));
1548                 }
1549             } else {
1550                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1551             }
1552             $conf->write($loginManager->isLoggedIn());
1553             $history->updateSettings();
1554         } catch (Exception $e) {
1555             error_log(
1556                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1557                 $e->getMessage()
1558             );
1559
1560             // TODO: do not handle exceptions/errors in JS.
1561             echo '<script>alert("'
1562                 . $e->getMessage()
1563                 .'");document.location=\'./?do='
1564                 . Router::$PAGE_PLUGINSADMIN
1565                 .'\';</script>';
1566             exit;
1567         }
1568         header('Location: ./?do='. Router::$PAGE_PLUGINSADMIN);
1569         exit;
1570     }
1571
1572     // Get a fresh token
1573     if ($targetPage == Router::$GET_TOKEN) {
1574         header('Content-Type:text/plain');
1575         echo $sessionManager->generateToken();
1576         exit;
1577     }
1578
1579     // -------- Thumbnails Update
1580     if ($targetPage == Router::$PAGE_THUMBS_UPDATE) {
1581         $ids = [];
1582         foreach ($bookmarkService->search() as $bookmark) {
1583             // A note or not HTTP(S)
1584             if ($bookmark->isNote() || ! startsWith(strtolower($bookmark->getUrl()), 'http')) {
1585                 continue;
1586             }
1587             $ids[] = $bookmark->getId();
1588         }
1589         $PAGE->assign('ids', $ids);
1590         $PAGE->assign('pagetitle', t('Thumbnails update') .' - '. $conf->get('general.title', 'Shaarli'));
1591         $PAGE->renderPage('thumbnails');
1592         exit;
1593     }
1594
1595     // -------- Single Thumbnail Update
1596     if ($targetPage == Router::$AJAX_THUMB_UPDATE) {
1597         if (! isset($_POST['id']) || ! ctype_digit($_POST['id'])) {
1598             http_response_code(400);
1599             exit;
1600         }
1601         $id = (int) $_POST['id'];
1602         if (! $bookmarkService->exists($id)) {
1603             http_response_code(404);
1604             exit;
1605         }
1606         $thumbnailer = new Thumbnailer($conf);
1607         $bookmark = $bookmarkService->get($id);
1608         $bookmark->setThumbnail($thumbnailer->get($bookmark->getUrl()));
1609         $bookmarkService->set($bookmark);
1610
1611         $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1612         echo json_encode($factory->getFormatter('raw')->format($bookmark));
1613         exit;
1614     }
1615
1616     // -------- Otherwise, simply display search form and bookmarks:
1617     showLinkList($PAGE, $bookmarkService, $conf, $pluginManager, $loginManager);
1618     exit;
1619 }
1620
1621 /**
1622  * Template for the list of bookmarks (<div id="linklist">)
1623  * This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
1624  *
1625  * @param pageBuilder              $PAGE          pageBuilder instance.
1626  * @param BookmarkServiceInterface $linkDb        LinkDB instance.
1627  * @param ConfigManager            $conf          Configuration Manager instance.
1628  * @param PluginManager            $pluginManager Plugin Manager instance.
1629  * @param LoginManager             $loginManager  LoginManager instance
1630  */
1631 function buildLinkList($PAGE, $linkDb, $conf, $pluginManager, $loginManager)
1632 {
1633     $factory = new FormatterFactory($conf, $loginManager->isLoggedIn());
1634     $formatter = $factory->getFormatter();
1635
1636     // Used in templates
1637     if (isset($_GET['searchtags'])) {
1638         if (! empty($_GET['searchtags'])) {
1639             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1640         } else {
1641             $searchtags = false;
1642         }
1643     } else {
1644         $searchtags = '';
1645     }
1646     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1647
1648     // Smallhash filter
1649     if (! empty($_SERVER['QUERY_STRING'])
1650         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1651         try {
1652             $linksToDisplay = $linkDb->findByHash($_SERVER['QUERY_STRING']);
1653         } catch (BookmarkNotFoundException $e) {
1654             $PAGE->render404($e->getMessage());
1655             exit;
1656         }
1657     } else {
1658         // Filter bookmarks according search parameters.
1659         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : null;
1660         $request = [
1661             'searchtags' => $searchtags,
1662             'searchterm' => $searchterm,
1663         ];
1664         $linksToDisplay = $linkDb->search($request, $visibility, false, !empty($_SESSION['untaggedonly']));
1665     }
1666
1667     // ---- Handle paging.
1668     $keys = array();
1669     foreach ($linksToDisplay as $key => $value) {
1670         $keys[] = $key;
1671     }
1672
1673     // Select articles according to paging.
1674     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1675     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1676     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1677     $page = $page < 1 ? 1 : $page;
1678     $page = $page > $pagecount ? $pagecount : $page;
1679     // Start index.
1680     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1681     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1682
1683     $thumbnailsEnabled = $conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE;
1684     if ($thumbnailsEnabled) {
1685         $thumbnailer = new Thumbnailer($conf);
1686     }
1687
1688     $linkDisp = array();
1689     while ($i<$end && $i<count($keys)) {
1690         $link = $formatter->format($linksToDisplay[$keys[$i]]);
1691
1692         // Logged in, thumbnails enabled, not a note,
1693         // and (never retrieved yet or no valid cache file)
1694         if ($loginManager->isLoggedIn()
1695             && $thumbnailsEnabled
1696             && !$linksToDisplay[$keys[$i]]->isNote()
1697             && $linksToDisplay[$keys[$i]]->getThumbnail() !== false
1698             && ! is_file($linksToDisplay[$keys[$i]]->getThumbnail())
1699         ) {
1700             $linksToDisplay[$keys[$i]]->setThumbnail($thumbnailer->get($link['url']));
1701             $linkDb->set($linksToDisplay[$keys[$i]], false);
1702             $updateDB = true;
1703             $link['thumbnail'] = $linksToDisplay[$keys[$i]]->getThumbnail();
1704         }
1705
1706         // Check for both signs of a note: starting with ? and 7 chars long.
1707 //        if ($link['url'][0] === '?' && strlen($link['url']) === 7) {
1708 //            $link['url'] = index_url($_SERVER) . $link['url'];
1709 //        }
1710
1711         $linkDisp[$keys[$i]] = $link;
1712         $i++;
1713     }
1714
1715     // If we retrieved new thumbnails, we update the database.
1716     if (!empty($updateDB)) {
1717         $linkDb->save();
1718     }
1719
1720     // Compute paging navigation
1721     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1722     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1723     $previous_page_url = '';
1724     if ($i != count($keys)) {
1725         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1726     }
1727     $next_page_url='';
1728     if ($page>1) {
1729         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1730     }
1731
1732     // Fill all template fields.
1733     $data = array(
1734         'previous_page_url' => $previous_page_url,
1735         'next_page_url' => $next_page_url,
1736         'page_current' => $page,
1737         'page_max' => $pagecount,
1738         'result_count' => count($linksToDisplay),
1739         'search_term' => $searchterm,
1740         'search_tags' => $searchtags,
1741         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1742         'links' => $linkDisp,
1743     );
1744
1745     // If there is only a single link, we change on-the-fly the title of the page.
1746     if (count($linksToDisplay) == 1) {
1747         $data['pagetitle'] = $linksToDisplay[$keys[0]]->getTitle() .' - '. $conf->get('general.title');
1748     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1749         $data['pagetitle'] = t('Search: ');
1750         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1751         $bracketWrap = function ($tag) {
1752             return '['. $tag .']';
1753         };
1754         $data['pagetitle'] .= ! empty($searchtags)
1755             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1756             : '';
1757         $data['pagetitle'] .= '- '. $conf->get('general.title');
1758     }
1759
1760     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1761
1762     foreach ($data as $key => $value) {
1763         $PAGE->assign($key, $value);
1764     }
1765
1766     return;
1767 }
1768
1769 /**
1770  * Installation
1771  * This function should NEVER be called if the file data/config.php exists.
1772  *
1773  * @param ConfigManager  $conf           Configuration Manager instance.
1774  * @param SessionManager $sessionManager SessionManager instance
1775  * @param LoginManager   $loginManager   LoginManager instance
1776  */
1777 function install($conf, $sessionManager, $loginManager)
1778 {
1779     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1780     if (endsWith($_SERVER['HTTP_HOST'], '.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) {
1781         mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions', 0705);
1782     }
1783
1784
1785     // This part makes sure sessions works correctly.
1786     // (Because on some hosts, session.save_path may not be set correctly,
1787     // or we may not have write access to it.)
1788     if (isset($_GET['test_session'])
1789         && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working')) {
1790         // Step 2: Check if data in session is correct.
1791         $msg = t(
1792             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1793             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1794             'and that you have write access to it.<br>'.
1795             'It currently points to %s.<br>'.
1796             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1797             'or any custom hostname without a dot causes cookie storage to fail. '.
1798             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1799         );
1800         $msg = sprintf($msg, session_save_path());
1801         echo $msg;
1802         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1803         die;
1804     }
1805     if (!isset($_SESSION['session_tested'])) {
1806         // Step 1 : Try to store data in session and reload page.
1807         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1808         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1809     }
1810     if (isset($_GET['test_session'])) {
1811         // Step 3: Sessions are OK. Remove test parameter from URL.
1812         header('Location: '.index_url($_SERVER));
1813     }
1814
1815
1816     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) {
1817         $tz = 'UTC';
1818         if (!empty($_POST['continent']) && !empty($_POST['city'])
1819             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1820         ) {
1821             $tz = $_POST['continent'].'/'.$_POST['city'];
1822         }
1823         $conf->set('general.timezone', $tz);
1824         $login = $_POST['setlogin'];
1825         $conf->set('credentials.login', $login);
1826         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1827         $conf->set('credentials.salt', $salt);
1828         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1829         if (!empty($_POST['title'])) {
1830             $conf->set('general.title', escape($_POST['title']));
1831         } else {
1832             $conf->set('general.title', 'Shared bookmarks on '.escape(index_url($_SERVER)));
1833         }
1834         $conf->set('translation.language', escape($_POST['language']));
1835         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1836         $conf->set('api.enabled', !empty($_POST['enableApi']));
1837         $conf->set(
1838             'api.secret',
1839             generate_api_secret(
1840                 $conf->get('credentials.login'),
1841                 $conf->get('credentials.salt')
1842             )
1843         );
1844         try {
1845             // Everything is ok, let's create config file.
1846             $conf->write($loginManager->isLoggedIn());
1847         } catch (Exception $e) {
1848             error_log(
1849                 'ERROR while writing config file after installation.' . PHP_EOL .
1850                     $e->getMessage()
1851             );
1852
1853             // TODO: do not handle exceptions/errors in JS.
1854             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1855             exit;
1856         }
1857
1858         $history = new History($conf->get('resource.history'));
1859         $bookmarkService = new BookmarkFileService($conf, $history, true);
1860         if ($bookmarkService->count() === 0) {
1861             $bookmarkService->initialize();
1862         }
1863
1864         echo '<script>alert('
1865             .'"Shaarli is now configured. '
1866             .'Please enter your login/password and start shaaring your bookmarks!"'
1867             .');document.location=\'./login\';</script>';
1868         exit;
1869     }
1870
1871     $PAGE = new PageBuilder($conf, $_SESSION, null, $sessionManager->generateToken());
1872     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1873     $PAGE->assign('continents', $continents);
1874     $PAGE->assign('cities', $cities);
1875     $PAGE->assign('languages', Languages::getAvailableLanguages());
1876     $PAGE->renderPage('install');
1877     exit;
1878 }
1879
1880 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
1881     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
1882 }
1883
1884 try {
1885     $history = new History($conf->get('resource.history'));
1886 } catch (Exception $e) {
1887     die($e->getMessage());
1888 }
1889
1890 $linkDb = new BookmarkFileService($conf, $history, $loginManager->isLoggedIn());
1891
1892 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) {
1893     showDailyRSS($linkDb, $conf, $loginManager);
1894     exit;
1895 }
1896
1897 $containerBuilder = new ContainerBuilder($conf, $sessionManager, $loginManager);
1898 $container = $containerBuilder->build();
1899 $app = new App($container);
1900
1901 // REST API routes
1902 $app->group('/api/v1', function () {
1903     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
1904     $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
1905     $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
1906     $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
1907     $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
1908     $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
1909
1910     $this->get('/tags', '\Shaarli\Api\Controllers\Tags:getTags')->setName('getTags');
1911     $this->get('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:getTag')->setName('getTag');
1912     $this->put('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:putTag')->setName('putTag');
1913     $this->delete('/tags/{tagName:[\w]+}', '\Shaarli\Api\Controllers\Tags:deleteTag')->setName('deleteTag');
1914
1915     $this->get('/history', '\Shaarli\Api\Controllers\HistoryController:getHistory')->setName('getHistory');
1916 })->add('\Shaarli\Api\ApiMiddleware');
1917
1918 $app->group('', function () {
1919     $this->get('/login', '\Shaarli\Front\Controller\LoginController:index')->setName('login');
1920     $this->get('/logout', '\Shaarli\Front\Controller\LogoutController:index')->setName('logout');
1921     $this->get('/picture-wall', '\Shaarli\Front\Controller\PictureWallController:index')->setName('picwall');
1922 })->add('\Shaarli\Front\ShaarliMiddleware');
1923
1924 $response = $app->run(true);
1925
1926 // Hack to make Slim and Shaarli router work together:
1927 // If a Slim route isn't found and NOT API call, we call renderPage().
1928 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
1929     // We use UTF-8 for proper international characters handling.
1930     header('Content-Type: text/html; charset=utf-8');
1931     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
1932 } else {
1933     $response = $response
1934         ->withHeader('Access-Control-Allow-Origin', '*')
1935         ->withHeader(
1936             'Access-Control-Allow-Headers',
1937             'X-Requested-With, Content-Type, Accept, Origin, Authorization'
1938         )
1939         ->withHeader('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
1940     $app->respond($response);
1941 }