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  * Requires: PHP 5.5.x
  15  */
  16
  17 // Set 'UTC' as the default timezone if it is not defined in php.ini
  18 // See http://php.net/manual/en/datetime.configuration.php#ini.date.timezone
  19 if (date_default_timezone_get() == '') {
  20     date_default_timezone_set('UTC');
  21 }
  22
  23 /*
  24  * PHP configuration
  25  */
  26
  27 // http://server.com/x/shaarli --> /shaarli/
  28 define('WEB_PATH', substr($_SERVER['REQUEST_URI'], 0, 1+strrpos($_SERVER['REQUEST_URI'], '/', 0)));
  29
  30 // High execution time in case of problematic imports/exports.
  31 ini_set('max_input_time','60');
  32
  33 // Try to set max upload file size and read
  34 ini_set('memory_limit', '128M');
  35 ini_set('post_max_size', '16M');
  36 ini_set('upload_max_filesize', '16M');
  37
  38 // See all error except warnings
  39 error_reporting(E_ALL^E_WARNING);
  40 // See all errors (for debugging only)
  41 //error_reporting(-1);
  42
  43
  44 // 3rd-party libraries
  45 if (! file_exists(__DIR__ . '/vendor/autoload.php')) {
  46     header('Content-Type: text/plain; charset=utf-8');
  47     echo "Error: missing Composer configuration\n\n"
  48         ."If you installed Shaarli through Git or using the development branch,\n"
  49         ."please refer to the installation documentation to install PHP"
  50         ." dependencies using Composer:\n"
  51         ."- https://shaarli.readthedocs.io/en/master/Server-configuration/\n"
  52         ."- https://shaarli.readthedocs.io/en/master/Download-and-Installation/";
  53     exit;
  54 }
  55 require_once 'inc/rain.tpl.class.php';
  56 require_once __DIR__ . '/vendor/autoload.php';
  57
  58 // Shaarli library
  59 require_once 'application/ApplicationUtils.php';
  60 require_once 'application/Cache.php';
  61 require_once 'application/CachedPage.php';
  62 require_once 'application/config/ConfigPlugin.php';
  63 require_once 'application/FeedBuilder.php';
  64 require_once 'application/FileUtils.php';
  65 require_once 'application/History.php';
  66 require_once 'application/HttpUtils.php';
  67 require_once 'application/LinkDB.php';
  68 require_once 'application/LinkFilter.php';
  69 require_once 'application/LinkUtils.php';
  70 require_once 'application/NetscapeBookmarkUtils.php';
  71 require_once 'application/PageBuilder.php';
  72 require_once 'application/TimeZone.php';
  73 require_once 'application/Url.php';
  74 require_once 'application/Utils.php';
  75 require_once 'application/PluginManager.php';
  76 require_once 'application/Router.php';
  77 require_once 'application/Updater.php';
  78 use \Shaarli\Config\ConfigManager;
  79 use \Shaarli\Languages;
  80 use \Shaarli\Security\LoginManager;
  81 use \Shaarli\Security\SessionManager;
  82 use \Shaarli\ThemeUtils;
  83 use \Shaarli\Thumbnailer;
  84
  85 // Ensure the PHP version is supported
  86 try {
  87     ApplicationUtils::checkPHPVersion('5.5', PHP_VERSION);
  88 } catch(Exception $exc) {
  89     header('Content-Type: text/plain; charset=utf-8');
  90     echo $exc->getMessage();
  91     exit;
  92 }
  93
  94 define('SHAARLI_VERSION', ApplicationUtils::getVersion(__DIR__ .'/'. ApplicationUtils::$VERSION_FILE));
  95
  96 // Force cookie path (but do not change lifetime)
  97 $cookie = session_get_cookie_params();
  98 $cookiedir = '';
  99 if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 100     $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/';
 101 }
 102 // Set default cookie expiration and path.
 103 session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']);
 104 // Set session parameters on server side.
 105 // Use cookies to store session.
 106 ini_set('session.use_cookies', 1);
 107 // Force cookies for session (phpsessionID forbidden in URL).
 108 ini_set('session.use_only_cookies', 1);
 109 // Prevent PHP form using sessionID in URL if cookies are disabled.
 110 ini_set('session.use_trans_sid', false);
 111
 112 session_name('shaarli');
 113 // Start session if needed (Some server auto-start sessions).
 114 if (session_id() == '') {
 115     session_start();
 116 }
 117
 118 // Regenerate session ID if invalid or not defined in cookie.
 119 if (isset($_COOKIE['shaarli']) && !SessionManager::checkId($_COOKIE['shaarli'])) {
 120     session_regenerate_id(true);
 121     $_COOKIE['shaarli'] = session_id();
 122 }
 123
 124 $conf = new ConfigManager();
 125 $sessionManager = new SessionManager($_SESSION, $conf);
 126 $loginManager = new LoginManager($GLOBALS, $conf, $sessionManager);
 127 $loginManager->generateStaySignedInToken($_SERVER['REMOTE_ADDR']);
 128 $clientIpId = client_ip_id($_SERVER);
 129
 130 // LC_MESSAGES isn't defined without php-intl, in this case use LC_COLLATE locale instead.
 131 if (! defined('LC_MESSAGES')) {
 132     define('LC_MESSAGES', LC_COLLATE);
 133 }
 134
 135 // Sniff browser language and set date format accordingly.
 136 if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
 137     autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']);
 138 }
 139
 140 new Languages(setlocale(LC_MESSAGES, 0), $conf);
 141
 142 $conf->setEmpty('general.timezone', date_default_timezone_get());
 143 $conf->setEmpty('general.title', t('Shared links on '). escape(index_url($_SERVER)));
 144 RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl').'/'.$conf->get('resource.theme').'/'; // template directory
 145 RainTPL::$cache_dir = $conf->get('resource.raintpl_tmp'); // cache directory
 146
 147 $pluginManager = new PluginManager($conf);
 148 $pluginManager->load($conf->get('general.enabled_plugins'));
 149
 150 date_default_timezone_set($conf->get('general.timezone', 'UTC'));
 151
 152 ob_start();  // Output buffering for the page cache.
 153
 154 // Prevent caching on client side or proxy: (yes, it's ugly)
 155 header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
 156 header("Cache-Control: no-store, no-cache, must-revalidate");
 157 header("Cache-Control: post-check=0, pre-check=0", false);
 158 header("Pragma: no-cache");
 159
 160 if (! is_file($conf->getConfigFileExt())) {
 161     // Ensure Shaarli has proper access to its resources
 162     $errors = ApplicationUtils::checkResourcePermissions($conf);
 163
 164     if ($errors != array()) {
 165         $message = '<p>'. t('Insufficient permissions:') .'</p><ul>';
 166
 167         foreach ($errors as $error) {
 168             $message .= '<li>'.$error.'</li>';
 169         }
 170         $message .= '</ul>';
 171
 172         header('Content-Type: text/html; charset=utf-8');
 173         echo $message;
 174         exit;
 175     }
 176
 177     // Display the installation form if no existing config is found
 178     install($conf, $sessionManager, $loginManager);
 179 }
 180
 181 $loginManager->checkLoginState($_COOKIE, $clientIpId);
 182
 183 /**
 184  * Adapter function to ensure compatibility with third-party templates
 185  *
 186  * @see https://github.com/shaarli/Shaarli/pull/1086
 187  *
 188  * @return bool true when the user is logged in, false otherwise
 189  */
 190 function isLoggedIn()
 191 {
 192     global $loginManager;
 193     return $loginManager->isLoggedIn();
 194 }
 195
 196
 197 // ------------------------------------------------------------------------------------------
 198 // Process login form: Check if login/password is correct.
 199 if (isset($_POST['login'])) {
 200     if (! $loginManager->canLogin($_SERVER)) {
 201         die(t('I said: NO. You are banned for the moment. Go away.'));
 202     }
 203     if (isset($_POST['password'])
 204         && $sessionManager->checkToken($_POST['token'])
 205         && $loginManager->checkCredentials($_SERVER['REMOTE_ADDR'], $clientIpId, $_POST['login'], $_POST['password'])
 206     ) {
 207         $loginManager->handleSuccessfulLogin($_SERVER);
 208
 209         $cookiedir = '';
 210         if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
 211             // Note: Never forget the trailing slash on the cookie path!
 212             $cookiedir = dirname($_SERVER["SCRIPT_NAME"]) . '/';
 213         }
 214
 215         if (!empty($_POST['longlastingsession'])) {
 216             // Keep the session cookie even after the browser closes
 217             $sessionManager->setStaySignedIn(true);
 218             $expirationTime = $sessionManager->extendSession();
 219
 220             setcookie(
 221                 $loginManager::$STAY_SIGNED_IN_COOKIE,
 222                 $loginManager->getStaySignedInToken(),
 223                 $expirationTime,
 224                 WEB_PATH
 225             );
 226
 227         } else {
 228             // Standard session expiration (=when browser closes)
 229             $expirationTime = 0;
 230         }
 231
 232         // Send cookie with the new expiration date to the browser
 233         session_set_cookie_params($expirationTime, $cookiedir, $_SERVER['SERVER_NAME']);
 234         session_regenerate_id(true);
 235
 236         // Optional redirect after login:
 237         if (isset($_GET['post'])) {
 238             $uri = '?post='. urlencode($_GET['post']);
 239             foreach (array('description', 'source', 'title', 'tags') as $param) {
 240                 if (!empty($_GET[$param])) {
 241                     $uri .= '&'.$param.'='.urlencode($_GET[$param]);
 242                 }
 243             }
 244             header('Location: '. $uri);
 245             exit;
 246         }
 247
 248         if (isset($_GET['edit_link'])) {
 249             header('Location: ?edit_link='. escape($_GET['edit_link']));
 250             exit;
 251         }
 252
 253         if (isset($_POST['returnurl'])) {
 254             // Prevent loops over login screen.
 255             if (strpos($_POST['returnurl'], 'do=login') === false) {
 256                 header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST']));
 257                 exit;
 258             }
 259         }
 260         header('Location: ?'); exit;
 261     } else {
 262         $loginManager->handleFailedLogin($_SERVER);
 263         $redir = '&username='. urlencode($_POST['login']);
 264         if (isset($_GET['post'])) {
 265             $redir .= '&post=' . urlencode($_GET['post']);
 266             foreach (array('description', 'source', 'title', 'tags') as $param) {
 267                 if (!empty($_GET[$param])) {
 268                     $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
 269                 }
 270             }
 271         }
 272         // Redirect to login screen.
 273         echo '<script>alert("'. t("Wrong login/password.") .'");document.location=\'?do=login'.$redir.'\';</script>';
 274         exit;
 275     }
 276 }
 277
 278 // ------------------------------------------------------------------------------------------
 279 // Token management for XSRF protection
 280 // Token should be used in any form which acts on data (create,update,delete,import...).
 281 if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array();  // Token are attached to the session.
 282
 283 /**
 284  * Daily RSS feed: 1 RSS entry per day giving all the links on that day.
 285  * Gives the last 7 days (which have links).
 286  * This RSS feed cannot be filtered.
 287  *
 288  * @param ConfigManager $conf         Configuration Manager instance
 289  * @param LoginManager  $loginManager LoginManager instance
 290  */
 291 function showDailyRSS($conf, $loginManager) {
 292     // Cache system
 293     $query = $_SERVER['QUERY_STRING'];
 294     $cache = new CachedPage(
 295         $conf->get('config.PAGE_CACHE'),
 296         page_url($_SERVER),
 297         startsWith($query,'do=dailyrss') && !$loginManager->isLoggedIn()
 298     );
 299     $cached = $cache->cachedVersion();
 300     if (!empty($cached)) {
 301         echo $cached;
 302         exit;
 303     }
 304
 305     // If cached was not found (or not usable), then read the database and build the response:
 306     // Read links from database (and filter private links if used it not logged in).
 307     $LINKSDB = new LinkDB(
 308         $conf->get('resource.datastore'),
 309         $loginManager->isLoggedIn(),
 310         $conf->get('privacy.hide_public_links'),
 311         $conf->get('redirector.url'),
 312         $conf->get('redirector.encode_url')
 313     );
 314
 315     /* Some Shaarlies may have very few links, so we need to look
 316        back in time until we have enough days ($nb_of_days).
 317     */
 318     $nb_of_days = 7; // We take 7 days.
 319     $today = date('Ymd');
 320     $days = array();
 321
 322     foreach ($LINKSDB as $link) {
 323         $day = $link['created']->format('Ymd'); // Extract day (without time)
 324         if (strcmp($day, $today) < 0) {
 325             if (empty($days[$day])) {
 326                 $days[$day] = array();
 327             }
 328             $days[$day][] = $link;
 329         }
 330
 331         if (count($days) > $nb_of_days) {
 332             break; // Have we collected enough days?
 333         }
 334     }
 335
 336     // Build the RSS feed.
 337     header('Content-Type: application/rss+xml; charset=utf-8');
 338     $pageaddr = escape(index_url($_SERVER));
 339     echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
 340     echo '<channel>';
 341     echo '<title>Daily - '. $conf->get('general.title') . '</title>';
 342     echo '<link>'. $pageaddr .'</link>';
 343     echo '<description>Daily shared links</description>';
 344     echo '<language>en-en</language>';
 345     echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL;
 346
 347     // For each day.
 348     foreach ($days as $day => $links) {
 349         $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
 350         $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day);  // Absolute URL of the corresponding "Daily" page.
 351
 352         // We pre-format some fields for proper output.
 353         foreach ($links as &$link) {
 354             $link['formatedDescription'] = format_description(
 355                 $link['description'],
 356                 $conf->get('redirector.url'),
 357                 $conf->get('redirector.encode_url')
 358             );
 359             $link['thumbnail'] = thumbnail($conf, $link['url']);
 360             $link['timestamp'] = $link['created']->getTimestamp();
 361             if (startsWith($link['url'], '?')) {
 362                 $link['url'] = index_url($_SERVER) . $link['url'];  // make permalink URL absolute
 363             }
 364         }
 365
 366         // Then build the HTML for this day:
 367         $tpl = new RainTPL;
 368         $tpl->assign('title', $conf->get('general.title'));
 369         $tpl->assign('daydate', $dayDate->getTimestamp());
 370         $tpl->assign('absurl', $absurl);
 371         $tpl->assign('links', $links);
 372         $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS)));
 373         $tpl->assign('hide_timestamps', $conf->get('privacy.hide_timestamps', false));
 374         $html = $tpl->draw('dailyrss', true);
 375
 376         echo $html . PHP_EOL;
 377     }
 378     echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->';
 379
 380     $cache->cache(ob_get_contents());
 381     ob_end_flush();
 382     exit;
 383 }
 384
 385 /**
 386  * Show the 'Daily' page.
 387  *
 388  * @param PageBuilder   $pageBuilder   Template engine wrapper.
 389  * @param LinkDB        $LINKSDB       LinkDB instance.
 390  * @param ConfigManager $conf          Configuration Manager instance.
 391  * @param PluginManager $pluginManager Plugin Manager instance.
 392  * @param LoginManager  $loginManager  Login Manager instance
 393  */
 394 function showDaily($pageBuilder, $LINKSDB, $conf, $pluginManager, $loginManager)
 395 {
 396     $day = date('Ymd', strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
 397     if (isset($_GET['day'])) {
 398       $day = $_GET['day'];
 399     }
 400
 401     $days = $LINKSDB->days();
 402     $i = array_search($day, $days);
 403     if ($i === false && count($days)) {
 404         // no links for day, but at least one day with links
 405         $i = count($days) - 1;
 406         $day = $days[$i];
 407     }
 408     $previousday = '';
 409     $nextday = '';
 410
 411     if ($i !== false) {
 412         if ($i >= 1) {
 413              $previousday=$days[$i - 1];
 414         }
 415         if ($i < count($days) - 1) {
 416           $nextday = $days[$i + 1];
 417         }
 418     }
 419     try {
 420         $linksToDisplay = $LINKSDB->filterDay($day);
 421     } catch (Exception $exc) {
 422         error_log($exc);
 423         $linksToDisplay = array();
 424     }
 425
 426     // We pre-format some fields for proper output.
 427     foreach($linksToDisplay as $key => $link) {
 428         $taglist = explode(' ',$link['tags']);
 429         uasort($taglist, 'strcasecmp');
 430         $linksToDisplay[$key]['taglist']=$taglist;
 431         $linksToDisplay[$key]['formatedDescription'] = format_description(
 432             $link['description'],
 433             $conf->get('redirector.url'),
 434             $conf->get('redirector.encode_url')
 435         );
 436         $linksToDisplay[$key]['thumbnail'] = thumbnail($conf, $link['url']);
 437         $linksToDisplay[$key]['timestamp'] =  $link['created']->getTimestamp();
 438     }
 439
 440     $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000');
 441     $data = array(
 442         'pagetitle' => $conf->get('general.title') .' - '. format_date($dayDate, false),
 443         'linksToDisplay' => $linksToDisplay,
 444         'day' => $dayDate->getTimestamp(),
 445         'dayDate' => $dayDate,
 446         'previousday' => $previousday,
 447         'nextday' => $nextday,
 448     );
 449
 450     /* Hook is called before column construction so that plugins don't have
 451        to deal with columns. */
 452     $pluginManager->executeHooks('render_daily', $data, array('loggedin' => $loginManager->isLoggedIn()));
 453
 454     /* We need to spread the articles on 3 columns.
 455        I did not want to use a JavaScript lib like http://masonry.desandro.com/
 456        so I manually spread entries with a simple method: I roughly evaluate the
 457        height of a div according to title and description length.
 458     */
 459     $columns = array(array(), array(), array()); // Entries to display, for each column.
 460     $fill = array(0, 0, 0);  // Rough estimate of columns fill.
 461     foreach($data['linksToDisplay'] as $key => $link) {
 462         // Roughly estimate length of entry (by counting characters)
 463         // Title: 30 chars = 1 line. 1 line is 30 pixels height.
 464         // Description: 836 characters gives roughly 342 pixel height.
 465         // This is not perfect, but it's usually OK.
 466         $length = strlen($link['title']) + (342 * strlen($link['description'])) / 836;
 467         if ($link['thumbnail']) {
 468           $length += 100; // 1 thumbnails roughly takes 100 pixels height.
 469         }
 470         // Then put in column which is the less filled:
 471         $smallest = min($fill); // find smallest value in array.
 472         $index = array_search($smallest, $fill); // find index of this smallest value.
 473         array_push($columns[$index], $link); // Put entry in this column.
 474         $fill[$index] += $length;
 475     }
 476
 477     $data['cols'] = $columns;
 478
 479     foreach ($data as $key => $value) {
 480         $pageBuilder->assign($key, $value);
 481     }
 482
 483     $pageBuilder->assign('pagetitle', t('Daily') .' - '. $conf->get('general.title', 'Shaarli'));
 484     $pageBuilder->renderPage('daily');
 485     exit;
 486 }
 487
 488 /**
 489  * Renders the linklist
 490  *
 491  * @param pageBuilder   $PAGE    pageBuilder instance.
 492  * @param LinkDB        $LINKSDB LinkDB instance.
 493  * @param ConfigManager $conf    Configuration Manager instance.
 494  * @param PluginManager $pluginManager Plugin Manager instance.
 495  */
 496 function showLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager) {
 497     buildLinkList($PAGE,$LINKSDB, $conf, $pluginManager, $loginManager);
 498     $PAGE->renderPage('linklist');
 499 }
 500
 501 /**
 502  * Render HTML page (according to URL parameters and user rights)
 503  *
 504  * @param ConfigManager  $conf           Configuration Manager instance.
 505  * @param PluginManager  $pluginManager  Plugin Manager instance,
 506  * @param LinkDB         $LINKSDB
 507  * @param History        $history        instance
 508  * @param SessionManager $sessionManager SessionManager instance
 509  * @param LoginManager   $loginManager   LoginManager instance
 510  */
 511 function renderPage($conf, $pluginManager, $LINKSDB, $history, $sessionManager, $loginManager)
 512 {
 513     $updater = new Updater(
 514         read_updates_file($conf->get('resource.updates')),
 515         $LINKSDB,
 516         $conf,
 517         $loginManager->isLoggedIn(),
 518         $_SESSION
 519     );
 520     try {
 521         $newUpdates = $updater->update();
 522         if (! empty($newUpdates)) {
 523             write_updates_file(
 524                 $conf->get('resource.updates'),
 525                 $updater->getDoneUpdates()
 526             );
 527         }
 528     }
 529     catch(Exception $e) {
 530         die($e->getMessage());
 531     }
 532
 533     $PAGE = new PageBuilder($conf, $_SESSION, $LINKSDB, $sessionManager->generateToken(), $loginManager->isLoggedIn());
 534     $PAGE->assign('linkcount', count($LINKSDB));
 535     $PAGE->assign('privateLinkcount', count_private($LINKSDB));
 536     $PAGE->assign('plugin_errors', $pluginManager->getErrors());
 537
 538     // Determine which page will be rendered.
 539     $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
 540     $targetPage = Router::findPage($query, $_GET, $loginManager->isLoggedIn());
 541
 542     if (
 543         // if the user isn't logged in
 544         !$loginManager->isLoggedIn() &&
 545         // and Shaarli doesn't have public content...
 546         $conf->get('privacy.hide_public_links') &&
 547         // and is configured to enforce the login
 548         $conf->get('privacy.force_login') &&
 549         // and the current page isn't already the login page
 550         $targetPage !== Router::$PAGE_LOGIN &&
 551         // and the user is not requesting a feed (which would lead to a different content-type as expected)
 552         $targetPage !== Router::$PAGE_FEED_ATOM &&
 553         $targetPage !== Router::$PAGE_FEED_RSS
 554     ) {
 555         // force current page to be the login page
 556         $targetPage = Router::$PAGE_LOGIN;
 557     }
 558
 559     // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
 560     // Then assign generated data to RainTPL.
 561     $common_hooks = array(
 562         'includes',
 563         'header',
 564         'footer',
 565     );
 566
 567     foreach($common_hooks as $name) {
 568         $plugin_data = array();
 569         $pluginManager->executeHooks('render_' . $name, $plugin_data,
 570             array(
 571                 'target' => $targetPage,
 572                 'loggedin' => $loginManager->isLoggedIn()
 573             )
 574         );
 575         $PAGE->assign('plugins_' . $name, $plugin_data);
 576     }
 577
 578     // -------- Display login form.
 579     if ($targetPage == Router::$PAGE_LOGIN)
 580     {
 581         if ($conf->get('security.open_shaarli')) { header('Location: ?'); exit; }  // No need to login for open Shaarli
 582         if (isset($_GET['username'])) {
 583             $PAGE->assign('username', escape($_GET['username']));
 584         }
 585         $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
 586         // add default state of the 'remember me' checkbox
 587         $PAGE->assign('remember_user_default', $conf->get('privacy.remember_user_default'));
 588         $PAGE->assign('user_can_login', $loginManager->canLogin($_SERVER));
 589         $PAGE->assign('pagetitle', t('Login') .' - '. $conf->get('general.title', 'Shaarli'));
 590         $PAGE->renderPage('loginform');
 591         exit;
 592     }
 593     // -------- User wants to logout.
 594     if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout'))
 595     {
 596         invalidateCaches($conf->get('resource.page_cache'));
 597         $sessionManager->logout();
 598         setcookie(LoginManager::$STAY_SIGNED_IN_COOKIE, 'false', 0, WEB_PATH);
 599         header('Location: ?');
 600         exit;
 601     }
 602
 603     // -------- Picture wall
 604     if ($targetPage == Router::$PAGE_PICWALL)
 605     {
 606         if (! $conf->get('thumbnails.enabled')) {
 607             $PAGE->renderPage('picwall');
 608             exit;
 609         }
 610
 611         // Optionally filter the results:
 612         $links = $LINKSDB->filterSearch($_GET);
 613         $linksToDisplay = array();
 614
 615         // Get only links which have a thumbnail.
 616         // Note: we do not retrieve thumbnails here, the request is too heavy.
 617         foreach($links as $key => $link)
 618         {
 619             if (isset($link['thumbnail']) && $link['thumbnail'] !== false) {
 620                 $linksToDisplay[] = $link; // Add to array.
 621             }
 622         }
 623
 624         $data = array(
 625             'linksToDisplay' => $linksToDisplay,
 626         );
 627         $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => $loginManager->isLoggedIn()));
 628
 629         foreach ($data as $key => $value) {
 630             $PAGE->assign($key, $value);
 631         }
 632
 633         $PAGE->assign('pagetitle', t('Picture wall') .' - '. $conf->get('general.title', 'Shaarli'));
 634         $PAGE->renderPage('picwall');
 635         exit;
 636     }
 637
 638     // -------- Tag cloud
 639     if ($targetPage == Router::$PAGE_TAGCLOUD)
 640     {
 641         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 642         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 643         $tags = $LINKSDB->linksCountPerTag($filteringTags, $visibility);
 644
 645         // We sort tags alphabetically, then choose a font size according to count.
 646         // First, find max value.
 647         $maxcount = 0;
 648         foreach ($tags as $value) {
 649             $maxcount = max($maxcount, $value);
 650         }
 651
 652         alphabetical_sort($tags, false, true);
 653
 654         $tagList = array();
 655         foreach($tags as $key => $value) {
 656             if (in_array($key, $filteringTags)) {
 657                 continue;
 658             }
 659             // Tag font size scaling:
 660             //   default 15 and 30 logarithm bases affect scaling,
 661             //   22 and 6 are arbitrary font sizes for max and min sizes.
 662             $size = log($value, 15) / log($maxcount, 30) * 2.2 + 0.8;
 663             $tagList[$key] = array(
 664                 'count' => $value,
 665                 'size' => number_format($size, 2, '.', ''),
 666             );
 667         }
 668
 669         $searchTags = implode(' ', escape($filteringTags));
 670         $data = array(
 671             'search_tags' => $searchTags,
 672             'tags' => $tagList,
 673         );
 674         $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => $loginManager->isLoggedIn()));
 675
 676         foreach ($data as $key => $value) {
 677             $PAGE->assign($key, $value);
 678         }
 679
 680         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 681         $PAGE->assign('pagetitle', $searchTags. t('Tag cloud') .' - '. $conf->get('general.title', 'Shaarli'));
 682         $PAGE->renderPage('tag.cloud');
 683         exit;
 684     }
 685
 686     // -------- Tag list
 687     if ($targetPage == Router::$PAGE_TAGLIST)
 688     {
 689         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
 690         $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : [];
 691         $tags = $LINKSDB->linksCountPerTag($filteringTags, $visibility);
 692         foreach ($filteringTags as $tag) {
 693             if (array_key_exists($tag, $tags)) {
 694                 unset($tags[$tag]);
 695             }
 696         }
 697
 698         if (! empty($_GET['sort']) && $_GET['sort'] === 'alpha') {
 699             alphabetical_sort($tags, false, true);
 700         }
 701
 702         $searchTags = implode(' ', escape($filteringTags));
 703         $data = [
 704             'search_tags' => $searchTags,
 705             'tags' => $tags,
 706         ];
 707         $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => $loginManager->isLoggedIn()]);
 708
 709         foreach ($data as $key => $value) {
 710             $PAGE->assign($key, $value);
 711         }
 712
 713         $searchTags = ! empty($searchTags) ? $searchTags .' - ' : '';
 714         $PAGE->assign('pagetitle', $searchTags . t('Tag list') .' - '. $conf->get('general.title', 'Shaarli'));
 715         $PAGE->renderPage('tag.list');
 716         exit;
 717     }
 718
 719     // Daily page.
 720     if ($targetPage == Router::$PAGE_DAILY) {
 721         showDaily($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager);
 722     }
 723
 724     // ATOM and RSS feed.
 725     if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) {
 726         $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
 727         header('Content-Type: application/'. $feedType .'+xml; charset=utf-8');
 728
 729         // Cache system
 730         $query = $_SERVER['QUERY_STRING'];
 731         $cache = new CachedPage(
 732             $conf->get('resource.page_cache'),
 733             page_url($_SERVER),
 734             startsWith($query,'do='. $targetPage) && !$loginManager->isLoggedIn()
 735         );
 736         $cached = $cache->cachedVersion();
 737         if (!empty($cached)) {
 738             echo $cached;
 739             exit;
 740         }
 741
 742         // Generate data.
 743         $feedGenerator = new FeedBuilder($LINKSDB, $feedType, $_SERVER, $_GET, $loginManager->isLoggedIn());
 744         $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0)));
 745         $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !$loginManager->isLoggedIn());
 746         $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks'));
 747         $data = $feedGenerator->buildData();
 748
 749         // Process plugin hook.
 750         $pluginManager->executeHooks('render_feed', $data, array(
 751             'loggedin' => $loginManager->isLoggedIn(),
 752             'target' => $targetPage,
 753         ));
 754
 755         // Render the template.
 756         $PAGE->assignAll($data);
 757         $PAGE->renderPage('feed.'. $feedType);
 758         $cache->cache(ob_get_contents());
 759         ob_end_flush();
 760         exit;
 761     }
 762
 763     // Display opensearch plugin (XML)
 764     if ($targetPage == Router::$PAGE_OPENSEARCH) {
 765         header('Content-Type: application/xml; charset=utf-8');
 766         $PAGE->assign('serverurl', index_url($_SERVER));
 767         $PAGE->renderPage('opensearch');
 768         exit;
 769     }
 770
 771     // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
 772     if (isset($_GET['addtag']))
 773     {
 774         // Get previous URL (http_referer) and add the tag to the searchtags parameters in query.
 775         if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER
 776         parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params);
 777
 778         // Prevent redirection loop
 779         if (isset($params['addtag'])) {
 780             unset($params['addtag']);
 781         }
 782
 783         // Check if this tag is already in the search query and ignore it if it is.
 784         // Each tag is always separated by a space
 785         if (isset($params['searchtags'])) {
 786             $current_tags = explode(' ', $params['searchtags']);
 787         } else {
 788             $current_tags = array();
 789         }
 790         $addtag = true;
 791         foreach ($current_tags as $value) {
 792             if ($value === $_GET['addtag']) {
 793                 $addtag = false;
 794                 break;
 795             }
 796         }
 797         // Append the tag if necessary
 798         if (empty($params['searchtags'])) {
 799             $params['searchtags'] = trim($_GET['addtag']);
 800         }
 801         elseif ($addtag) {
 802             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
 803         }
 804
 805         unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
 806         header('Location: ?'.http_build_query($params));
 807         exit;
 808     }
 809
 810     // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...)
 811     if (isset($_GET['removetag'])) {
 812         // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query.
 813         if (empty($_SERVER['HTTP_REFERER'])) {
 814             header('Location: ?');
 815             exit;
 816         }
 817
 818         // In case browser does not send HTTP_REFERER
 819         parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params);
 820
 821         // Prevent redirection loop
 822         if (isset($params['removetag'])) {
 823             unset($params['removetag']);
 824         }
 825
 826         if (isset($params['searchtags'])) {
 827             $tags = explode(' ', $params['searchtags']);
 828             // Remove value from array $tags.
 829             $tags = array_diff($tags, array($_GET['removetag']));
 830             $params['searchtags'] = implode(' ',$tags);
 831
 832             if (empty($params['searchtags'])) {
 833                 unset($params['searchtags']);
 834             }
 835
 836             unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different)
 837         }
 838         header('Location: ?'.http_build_query($params));
 839         exit;
 840     }
 841
 842     // -------- User wants to change the number of links per page (linksperpage=...)
 843     if (isset($_GET['linksperpage'])) {
 844         if (is_numeric($_GET['linksperpage'])) {
 845             $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage']));
 846         }
 847
 848         if (! empty($_SERVER['HTTP_REFERER'])) {
 849             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage'));
 850         } else {
 851             $location = '?';
 852         }
 853         header('Location: '. $location);
 854         exit;
 855     }
 856
 857     // -------- User wants to see only private links (toggle)
 858     if (isset($_GET['visibility'])) {
 859         if ($_GET['visibility'] === 'private') {
 860             // Visibility not set or not already private, set private, otherwise reset it
 861             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'private') {
 862                 // See only private links
 863                 $_SESSION['visibility'] = 'private';
 864             } else {
 865                 unset($_SESSION['visibility']);
 866             }
 867         } elseif ($_GET['visibility'] === 'public') {
 868             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
 869                 // See only public links
 870                 $_SESSION['visibility'] = 'public';
 871             } else {
 872                 unset($_SESSION['visibility']);
 873             }
 874         }
 875
 876         if (! empty($_SERVER['HTTP_REFERER'])) {
 877             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('visibility'));
 878         } else {
 879             $location = '?';
 880         }
 881         header('Location: '. $location);
 882         exit;
 883     }
 884
 885     // -------- User wants to see only untagged links (toggle)
 886     if (isset($_GET['untaggedonly'])) {
 887         $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']);
 888
 889         if (! empty($_SERVER['HTTP_REFERER'])) {
 890             $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly'));
 891         } else {
 892             $location = '?';
 893         }
 894         header('Location: '. $location);
 895         exit;
 896     }
 897
 898     // -------- Handle other actions allowed for non-logged in users:
 899     if (!$loginManager->isLoggedIn())
 900     {
 901         // User tries to post new link but is not logged in:
 902         // Show login screen, then redirect to ?post=...
 903         if (isset($_GET['post']))
 904         {
 905             header( // Redirect to login page, then back to post link.
 906                 'Location: ?do=login&post='.urlencode($_GET['post']).
 907                 (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').
 908                 (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').
 909                 (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):'').
 910                 (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')
 911             );
 912             exit;
 913         }
 914
 915         showLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager);
 916         if (isset($_GET['edit_link'])) {
 917             header('Location: ?do=login&edit_link='. escape($_GET['edit_link']));
 918             exit;
 919         }
 920
 921         exit; // Never remove this one! All operations below are reserved for logged in user.
 922     }
 923
 924     // -------- All other functions are reserved for the registered user:
 925
 926     // -------- Display the Tools menu if requested (import/export/bookmarklet...)
 927     if ($targetPage == Router::$PAGE_TOOLS)
 928     {
 929         $data = [
 930             'pageabsaddr' => index_url($_SERVER),
 931             'sslenabled' => is_https($_SERVER),
 932         ];
 933         $pluginManager->executeHooks('render_tools', $data);
 934
 935         foreach ($data as $key => $value) {
 936             $PAGE->assign($key, $value);
 937         }
 938
 939         $PAGE->assign('pagetitle', t('Tools') .' - '. $conf->get('general.title', 'Shaarli'));
 940         $PAGE->renderPage('tools');
 941         exit;
 942     }
 943
 944     // -------- User wants to change his/her password.
 945     if ($targetPage == Router::$PAGE_CHANGEPASSWORD)
 946     {
 947         if ($conf->get('security.open_shaarli')) {
 948             die(t('You are not supposed to change a password on an Open Shaarli.'));
 949         }
 950
 951         if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
 952         {
 953             if (!$sessionManager->checkToken($_POST['token'])) die(t('Wrong token.')); // Go away!
 954
 955             // Make sure old password is correct.
 956             $oldhash = sha1($_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt'));
 957             if ($oldhash!= $conf->get('credentials.hash')) {
 958                 echo '<script>alert("'. t('The old password is not correct.') .'");document.location=\'?do=changepasswd\';</script>';
 959                 exit;
 960             }
 961             // Save new password
 962             // Salt renders rainbow-tables attacks useless.
 963             $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
 964             $conf->set('credentials.hash', sha1($_POST['setpassword'] . $conf->get('credentials.login') . $conf->get('credentials.salt')));
 965             try {
 966                 $conf->write($loginManager->isLoggedIn());
 967             }
 968             catch(Exception $e) {
 969                 error_log(
 970                     'ERROR while writing config file after changing password.' . PHP_EOL .
 971                     $e->getMessage()
 972                 );
 973
 974                 // TODO: do not handle exceptions/errors in JS.
 975                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>';
 976                 exit;
 977             }
 978             echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'?do=tools\';</script>';
 979             exit;
 980         }
 981         else // show the change password form.
 982         {
 983             $PAGE->assign('pagetitle', t('Change password') .' - '. $conf->get('general.title', 'Shaarli'));
 984             $PAGE->renderPage('changepassword');
 985             exit;
 986         }
 987     }
 988
 989     // -------- User wants to change configuration
 990     if ($targetPage == Router::$PAGE_CONFIGURE)
 991     {
 992         if (!empty($_POST['title']) )
 993         {
 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             $conf->set('resource.theme', escape($_POST['theme']));
1007             $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection']));
1008             $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault']));
1009             $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks']));
1010             $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1011             $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks']));
1012             $conf->set('api.enabled', !empty($_POST['enableApi']));
1013             $conf->set('api.secret', escape($_POST['apiSecret']));
1014             $conf->set('translation.language', escape($_POST['language']));
1015
1016             $thumbnailsEnabled = extension_loaded('gd') && !empty($_POST['enableThumbnails']);
1017             $conf->set('thumbnails.enabled', $thumbnailsEnabled);
1018
1019             if (! $conf->get('thumbnails.enabled') && $thumbnailsEnabled) {
1020                 $_SESSION['warnings'][] = t(
1021                     'You have enabled thumbnails. <a href="?do=thumbs_update">Please synchonize them</a>.'
1022                 );
1023             }
1024
1025             try {
1026                 $conf->write($loginManager->isLoggedIn());
1027                 $history->updateSettings();
1028                 invalidateCaches($conf->get('resource.page_cache'));
1029             }
1030             catch(Exception $e) {
1031                 error_log(
1032                     'ERROR while writing config file after configuration update.' . PHP_EOL .
1033                     $e->getMessage()
1034                 );
1035
1036                 // TODO: do not handle exceptions/errors in JS.
1037                 echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=configure\';</script>';
1038                 exit;
1039             }
1040             echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'?do=configure\';</script>';
1041             exit;
1042         }
1043         else // Show the configuration form.
1044         {
1045             $PAGE->assign('title', $conf->get('general.title'));
1046             $PAGE->assign('theme', $conf->get('resource.theme'));
1047             $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl')));
1048             list($continents, $cities) = generateTimeZoneData(
1049                 timezone_identifiers_list(),
1050                 $conf->get('general.timezone')
1051             );
1052             $PAGE->assign('continents', $continents);
1053             $PAGE->assign('cities', $cities);
1054             $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false));
1055             $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false));
1056             $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false));
1057             $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true));
1058             $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false));
1059             $PAGE->assign('api_enabled', $conf->get('api.enabled', true));
1060             $PAGE->assign('api_secret', $conf->get('api.secret'));
1061             $PAGE->assign('languages', Languages::getAvailableLanguages());
1062             $PAGE->assign('language', $conf->get('translation.language'));
1063             $PAGE->assign('gd_enabled', extension_loaded('gd'));
1064             $PAGE->assign('pagetitle', t('Configure') .' - '. $conf->get('general.title', 'Shaarli'));
1065             $PAGE->renderPage('configure');
1066             exit;
1067         }
1068     }
1069
1070     // -------- User wants to rename a tag or delete it
1071     if ($targetPage == Router::$PAGE_CHANGETAG)
1072     {
1073         if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
1074             $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : '');
1075             $PAGE->assign('pagetitle', t('Manage tags') .' - '. $conf->get('general.title', 'Shaarli'));
1076             $PAGE->renderPage('changetag');
1077             exit;
1078         }
1079
1080         if (!$sessionManager->checkToken($_POST['token'])) {
1081             die(t('Wrong token.'));
1082         }
1083
1084         $alteredLinks = $LINKSDB->renameTag(escape($_POST['fromtag']), escape($_POST['totag']));
1085         $LINKSDB->save($conf->get('resource.page_cache'));
1086         foreach ($alteredLinks as $link) {
1087             $history->updateLink($link);
1088         }
1089         $delete = empty($_POST['totag']);
1090         $redirect = $delete ? 'do=changetag' : 'searchtags='. urlencode(escape($_POST['totag']));
1091         $count = count($alteredLinks);
1092         $alert = $delete
1093             ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d links.', $count), $count)
1094             : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d links.', $count), $count);
1095         echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>';
1096         exit;
1097     }
1098
1099     // -------- User wants to add a link without using the bookmarklet: Show form.
1100     if ($targetPage == Router::$PAGE_ADDLINK)
1101     {
1102         $PAGE->assign('pagetitle', t('Shaare a new link') .' - '. $conf->get('general.title', 'Shaarli'));
1103         $PAGE->renderPage('addlink');
1104         exit;
1105     }
1106
1107     // -------- User clicked the "Save" button when editing a link: Save link to database.
1108     if (isset($_POST['save_edit']))
1109     {
1110         // Go away!
1111         if (! $sessionManager->checkToken($_POST['token'])) {
1112             die(t('Wrong token.'));
1113         }
1114
1115         // lf_id should only be present if the link exists.
1116         $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : $LINKSDB->getNextId();
1117         // Linkdate is kept here to:
1118         //   - use the same permalink for notes as they're displayed when creating them
1119         //   - let users hack creation date of their posts
1120         //     See: https://shaarli.readthedocs.io/en/master/Various-hacks/#changing-the-timestamp-for-a-shaare
1121         $linkdate = escape($_POST['lf_linkdate']);
1122         if (isset($LINKSDB[$id])) {
1123             // Edit
1124             $created = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $linkdate);
1125             $updated = new DateTime();
1126             $shortUrl = $LINKSDB[$id]['shorturl'];
1127             $new = false;
1128         } else {
1129             // New link
1130             $created = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $linkdate);
1131             $updated = null;
1132             $shortUrl = link_small_hash($created, $id);
1133             $new = true;
1134         }
1135
1136         // Remove multiple spaces.
1137         $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags']));
1138         // Remove first '-' char in tags.
1139         $tags = preg_replace('/(^| )\-/', '$1', $tags);
1140         // Remove duplicates.
1141         $tags = implode(' ', array_unique(explode(' ', $tags)));
1142
1143         if (empty(trim($_POST['lf_url']))) {
1144             $_POST['lf_url'] = '?' . smallHash($linkdate . $id);
1145         }
1146         $url = whitelist_protocols(trim($_POST['lf_url']), $conf->get('security.allowed_protocols'));
1147
1148         $link = array(
1149             'id' => $id,
1150             'title' => trim($_POST['lf_title']),
1151             'url' => $url,
1152             'description' => $_POST['lf_description'],
1153             'private' => (isset($_POST['lf_private']) ? 1 : 0),
1154             'created' => $created,
1155             'updated' => $updated,
1156             'tags' => str_replace(',', ' ', $tags),
1157             'shorturl' => $shortUrl,
1158         );
1159
1160         // If title is empty, use the URL as title.
1161         if ($link['title'] == '') {
1162             $link['title'] = $link['url'];
1163         }
1164
1165         if ($conf->get('thumbnails.enabled')) {
1166             $thumbnailer = new Thumbnailer($conf);
1167             $link['thumbnail'] = $thumbnailer->get($url);
1168         }
1169
1170         $pluginManager->executeHooks('save_link', $link);
1171
1172         $LINKSDB[$id] = $link;
1173         $LINKSDB->save($conf->get('resource.page_cache'));
1174         if ($new) {
1175             $history->addLink($link);
1176         } else {
1177             $history->updateLink($link);
1178         }
1179
1180         // If we are called from the bookmarklet, we must close the popup:
1181         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) {
1182             echo '<script>self.close();</script>';
1183             exit;
1184         }
1185
1186         $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?';
1187         $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1188         // Scroll to the link which has been edited.
1189         $location .= '#' . $link['shorturl'];
1190         // After saving the link, redirect to the page the user was on.
1191         header('Location: '. $location);
1192         exit;
1193     }
1194
1195     // -------- User clicked the "Cancel" button when editing a link.
1196     if (isset($_POST['cancel_edit']))
1197     {
1198         $id = isset($_POST['lf_id']) ? (int) escape($_POST['lf_id']) : false;
1199         if (! isset($LINKSDB[$id])) {
1200             header('Location: ?');
1201         }
1202         // If we are called from the bookmarklet, we must close the popup:
1203         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1204         $link = $LINKSDB[$id];
1205         $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
1206         // Scroll to the link which has been edited.
1207         $returnurl .= '#'. $link['shorturl'];
1208         $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
1209         header('Location: '.$returnurl); // After canceling, redirect to the page the user was on.
1210         exit;
1211     }
1212
1213     // -------- User clicked the "Delete" button when editing a link: Delete link from database.
1214     if ($targetPage == Router::$PAGE_DELETELINK)
1215     {
1216         if (! $sessionManager->checkToken($_GET['token'])) {
1217             die(t('Wrong token.'));
1218         }
1219
1220         $ids = trim($_GET['lf_linkdate']);
1221         if (strpos($ids, ' ') !== false) {
1222             // multiple, space-separated ids provided
1223             $ids = array_values(array_filter(preg_split('/\s+/', escape($ids))));
1224         } else {
1225             // only a single id provided
1226             $ids = [$ids];
1227         }
1228         // assert at least one id is given
1229         if(!count($ids)){
1230             die('no id provided');
1231         }
1232         foreach ($ids as $id) {
1233             $id = (int) escape($id);
1234             $link = $LINKSDB[$id];
1235             $pluginManager->executeHooks('delete_link', $link);
1236             unset($LINKSDB[$id]);
1237         }
1238         $LINKSDB->save($conf->get('resource.page_cache')); // save to disk
1239         $history->deleteLink($link);
1240
1241         // If we are called from the bookmarklet, we must close the popup:
1242         if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; }
1243
1244         $location = '?';
1245         if (isset($_SERVER['HTTP_REFERER'])) {
1246             // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404.
1247             $location = generateLocation(
1248                     $_SERVER['HTTP_REFERER'],
1249                     $_SERVER['HTTP_HOST'],
1250                     ['delete_link', 'edit_link', $link['shorturl']]
1251             );
1252         }
1253
1254         header('Location: ' . $location); // After deleting the link, redirect to appropriate location
1255         exit;
1256     }
1257
1258     // -------- User clicked the "EDIT" button on a link: Display link edit form.
1259     if (isset($_GET['edit_link']))
1260     {
1261         $id = (int) escape($_GET['edit_link']);
1262         $link = $LINKSDB[$id];  // Read database
1263         if (!$link) { header('Location: ?'); exit; } // Link not found in database.
1264         $link['linkdate'] = $link['created']->format(LinkDB::LINK_DATE_FORMAT);
1265         $data = array(
1266             'link' => $link,
1267             'link_is_new' => false,
1268             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1269             'tags' => $LINKSDB->linksCountPerTag(),
1270         );
1271         $pluginManager->executeHooks('render_editlink', $data);
1272
1273         foreach ($data as $key => $value) {
1274             $PAGE->assign($key, $value);
1275         }
1276
1277         $PAGE->assign('pagetitle', t('Edit') .' '. t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1278         $PAGE->renderPage('editlink');
1279         exit;
1280     }
1281
1282     // -------- User want to post a new link: Display link edit form.
1283     if (isset($_GET['post'])) {
1284         $url = cleanup_url($_GET['post']);
1285
1286         $link_is_new = false;
1287         // Check if URL is not already in database (in this case, we will edit the existing link)
1288         $link = $LINKSDB->getLinkFromUrl($url);
1289         if (! $link)
1290         {
1291             $link_is_new = true;
1292             $linkdate = strval(date(LinkDB::LINK_DATE_FORMAT));
1293             // Get title if it was provided in URL (by the bookmarklet).
1294             $title = empty($_GET['title']) ? '' : escape($_GET['title']);
1295             // Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
1296             $description = empty($_GET['description']) ? '' : escape($_GET['description']);
1297             $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']);
1298             $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0;
1299             // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.)
1300             if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) {
1301                 // Short timeout to keep the application responsive
1302                 // The callback will fill $charset and $title with data from the downloaded page.
1303                 get_http_response(
1304                     $url,
1305                     $conf->get('general.download_timeout', 30),
1306                     $conf->get('general.download_max_size', 4194304),
1307                     get_curl_download_callback($charset, $title)
1308                 );
1309                 if (! empty($title) && strtolower($charset) != 'utf-8') {
1310                     $title = mb_convert_encoding($title, 'utf-8', $charset);
1311                 }
1312             }
1313
1314             if ($url == '') {
1315                 $url = '?' . smallHash($linkdate . $LINKSDB->getNextId());
1316                 $title = $conf->get('general.default_note_title', t('Note: '));
1317             }
1318             $url = escape($url);
1319             $title = escape($title);
1320
1321             $link = array(
1322                 'linkdate' => $linkdate,
1323                 'title' => $title,
1324                 'url' => $url,
1325                 'description' => $description,
1326                 'tags' => $tags,
1327                 'private' => $private,
1328             );
1329         } else {
1330             $link['linkdate'] = $link['created']->format(LinkDB::LINK_DATE_FORMAT);
1331         }
1332
1333         $data = array(
1334             'link' => $link,
1335             'link_is_new' => $link_is_new,
1336             'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
1337             'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
1338             'tags' => $LINKSDB->linksCountPerTag(),
1339             'default_private_links' => $conf->get('privacy.default_private_links', false),
1340         );
1341         $pluginManager->executeHooks('render_editlink', $data);
1342
1343         foreach ($data as $key => $value) {
1344             $PAGE->assign($key, $value);
1345         }
1346
1347         $PAGE->assign('pagetitle', t('Shaare') .' - '. $conf->get('general.title', 'Shaarli'));
1348         $PAGE->renderPage('editlink');
1349         exit;
1350     }
1351
1352     if ($targetPage == Router::$PAGE_EXPORT) {
1353         // Export links as a Netscape Bookmarks file
1354
1355         if (empty($_GET['selection'])) {
1356             $PAGE->assign('pagetitle', t('Export') .' - '. $conf->get('general.title', 'Shaarli'));
1357             $PAGE->renderPage('export');
1358             exit;
1359         }
1360
1361         // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html
1362         $selection = $_GET['selection'];
1363         if (isset($_GET['prepend_note_url'])) {
1364             $prependNoteUrl = $_GET['prepend_note_url'];
1365         } else {
1366             $prependNoteUrl = false;
1367         }
1368
1369         try {
1370             $PAGE->assign(
1371                 'links',
1372                 NetscapeBookmarkUtils::filterAndFormat(
1373                     $LINKSDB,
1374                     $selection,
1375                     $prependNoteUrl,
1376                     index_url($_SERVER)
1377                 )
1378             );
1379         } catch (Exception $exc) {
1380             header('Content-Type: text/plain; charset=utf-8');
1381             echo $exc->getMessage();
1382             exit;
1383         }
1384         $now = new DateTime();
1385         header('Content-Type: text/html; charset=utf-8');
1386         header(
1387             'Content-disposition: attachment; filename=bookmarks_'
1388            .$selection.'_'.$now->format(LinkDB::LINK_DATE_FORMAT).'.html'
1389         );
1390         $PAGE->assign('date', $now->format(DateTime::RFC822));
1391         $PAGE->assign('eol', PHP_EOL);
1392         $PAGE->assign('selection', $selection);
1393         $PAGE->renderPage('export.bookmarks');
1394         exit;
1395     }
1396
1397     if ($targetPage == Router::$PAGE_IMPORT) {
1398         // Upload a Netscape bookmark dump to import its contents
1399
1400         if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) {
1401             // Show import dialog
1402             $PAGE->assign(
1403                 'maxfilesize',
1404                 get_max_upload_size(
1405                     ini_get('post_max_size'),
1406                     ini_get('upload_max_filesize'),
1407                     false
1408                 )
1409             );
1410             $PAGE->assign(
1411                 'maxfilesizeHuman',
1412                 get_max_upload_size(
1413                     ini_get('post_max_size'),
1414                     ini_get('upload_max_filesize'),
1415                     true
1416                 )
1417             );
1418             $PAGE->assign('pagetitle', t('Import') .' - '. $conf->get('general.title', 'Shaarli'));
1419             $PAGE->renderPage('import');
1420             exit;
1421         }
1422
1423         // Import bookmarks from an uploaded file
1424         if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) {
1425             // The file is too big or some form field may be missing.
1426             $msg = sprintf(
1427                 t(
1428                     'The file you are trying to upload is probably bigger than what this webserver can accept'
1429                     .' (%s). Please upload in smaller chunks.'
1430                 ),
1431                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
1432             );
1433             echo '<script>alert("'. $msg .'");document.location=\'?do='.Router::$PAGE_IMPORT .'\';</script>';
1434             exit;
1435         }
1436         if (! $sessionManager->checkToken($_POST['token'])) {
1437             die('Wrong token.');
1438         }
1439         $status = NetscapeBookmarkUtils::import(
1440             $_POST,
1441             $_FILES,
1442             $LINKSDB,
1443             $conf,
1444             $history
1445         );
1446         echo '<script>alert("'.$status.'");document.location=\'?do='
1447              .Router::$PAGE_IMPORT .'\';</script>';
1448         exit;
1449     }
1450
1451     // Plugin administration page
1452     if ($targetPage == Router::$PAGE_PLUGINSADMIN) {
1453         $pluginMeta = $pluginManager->getPluginsMeta();
1454
1455         // Split plugins into 2 arrays: ordered enabled plugins and disabled.
1456         $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; });
1457         // Load parameters.
1458         $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array()));
1459         uasort(
1460             $enabledPlugins,
1461             function($a, $b) { return $a['order'] - $b['order']; }
1462         );
1463         $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; });
1464
1465         $PAGE->assign('enabledPlugins', $enabledPlugins);
1466         $PAGE->assign('disabledPlugins', $disabledPlugins);
1467         $PAGE->assign('pagetitle', t('Plugin administration') .' - '. $conf->get('general.title', 'Shaarli'));
1468         $PAGE->renderPage('pluginsadmin');
1469         exit;
1470     }
1471
1472     // Plugin administration form action
1473     if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) {
1474         try {
1475             if (isset($_POST['parameters_form'])) {
1476                 unset($_POST['parameters_form']);
1477                 foreach ($_POST as $param => $value) {
1478                     $conf->set('plugins.'. $param, escape($value));
1479                 }
1480             }
1481             else {
1482                 $conf->set('general.enabled_plugins', save_plugin_config($_POST));
1483             }
1484             $conf->write($loginManager->isLoggedIn());
1485             $history->updateSettings();
1486         }
1487         catch (Exception $e) {
1488             error_log(
1489                 'ERROR while saving plugin configuration:.' . PHP_EOL .
1490                 $e->getMessage()
1491             );
1492
1493             // TODO: do not handle exceptions/errors in JS.
1494             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</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 $sessionManager->generateToken($conf);
1505         exit;
1506     }
1507
1508     // -------- Thumbnails Update
1509     if ($targetPage == Router::$PAGE_THUMBS_UPDATE) {
1510         $ids = [];
1511         foreach ($LINKSDB as $link) {
1512             // A note or not HTTP(S)
1513             if ($link['url'][0] === '?' || ! startsWith(strtolower($link['url']), 'http')) {
1514                 continue;
1515             }
1516             $ids[] = $link['id'];
1517         }
1518         $PAGE->assign('ids', $ids);
1519         $PAGE->assign('pagetitle', t('Thumbnail 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) $_POST['id'];
1531         if (empty($LINKSDB[$id])) {
1532             http_response_code(404);
1533             exit;
1534         }
1535         $thumbnailer = new Thumbnailer($conf);
1536         $link = $LINKSDB[$id];
1537         $link['thumbnail'] = $thumbnailer->get($link['url']);
1538         $LINKSDB[$id] = $link;
1539         $LINKSDB->save($conf->get('resource.page_cache'));
1540
1541         echo json_encode($link);
1542         exit;
1543     }
1544
1545     // -------- Otherwise, simply display search form and links:
1546     showLinkList($PAGE, $LINKSDB, $conf, $pluginManager, $loginManager);
1547     exit;
1548 }
1549
1550 /**
1551  * Template for the list of links (<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 LinkDB        $LINKSDB       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, $LINKSDB, $conf, $pluginManager, $loginManager)
1561 {
1562     // Used in templates
1563     if (isset($_GET['searchtags'])) {
1564         if (! empty($_GET['searchtags'])) {
1565             $searchtags = escape(normalize_spaces($_GET['searchtags']));
1566         } else {
1567             $searchtags = false;
1568         }
1569     } else {
1570         $searchtags = '';
1571     }
1572     $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : '';
1573
1574     // Smallhash filter
1575     if (! empty($_SERVER['QUERY_STRING'])
1576         && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) {
1577         try {
1578             $linksToDisplay = $LINKSDB->filterHash($_SERVER['QUERY_STRING']);
1579         } catch (LinkNotFoundException $e) {
1580             $PAGE->render404($e->getMessage());
1581             exit;
1582         }
1583     } else {
1584         // Filter links according search parameters.
1585         $visibility = ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '';
1586         $request = [
1587             'searchtags' => $searchtags,
1588             'searchterm' => $searchterm,
1589         ];
1590         $linksToDisplay = $LINKSDB->filterSearch($request, false, $visibility, !empty($_SESSION['untaggedonly']));
1591     }
1592
1593     // ---- Handle paging.
1594     $keys = array();
1595     foreach ($linksToDisplay as $key => $value) {
1596         $keys[] = $key;
1597     }
1598
1599     // Select articles according to paging.
1600     $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']);
1601     $pagecount = $pagecount == 0 ? 1 : $pagecount;
1602     $page= empty($_GET['page']) ? 1 : intval($_GET['page']);
1603     $page = $page < 1 ? 1 : $page;
1604     $page = $page > $pagecount ? $pagecount : $page;
1605     // Start index.
1606     $i = ($page-1) * $_SESSION['LINKS_PER_PAGE'];
1607     $end = $i + $_SESSION['LINKS_PER_PAGE'];
1608
1609     if ($conf->get('thumbnails.enabled')) {
1610         $thumbnailer = new Thumbnailer($conf);
1611     }
1612
1613     $linkDisp = array();
1614     while ($i<$end && $i<count($keys))
1615     {
1616         $link = $linksToDisplay[$keys[$i]];
1617         $link['description'] = format_description(
1618             $link['description'],
1619             $conf->get('redirector.url'),
1620             $conf->get('redirector.encode_url')
1621         );
1622         $classLi =  ($i % 2) != 0 ? '' : 'publicLinkHightLight';
1623         $link['class'] = $link['private'] == 0 ? $classLi : 'private';
1624         $link['timestamp'] = $link['created']->getTimestamp();
1625         if (! empty($link['updated'])) {
1626             $link['updated_timestamp'] = $link['updated']->getTimestamp();
1627         } else {
1628             $link['updated_timestamp'] = '';
1629         }
1630         $taglist = preg_split('/\s+/', $link['tags'], -1, PREG_SPLIT_NO_EMPTY);
1631         uasort($taglist, 'strcasecmp');
1632         $link['taglist'] = $taglist;
1633
1634         // Thumbnails enabled, not a note,
1635         // and (never retrieved yet or no valid cache file)
1636         if ($conf->get('thumbnails.enabled') && $link['url'][0] != '?'
1637             && (! isset($link['thumbnail']) || ($link['thumbnail'] !== false && ! is_file($link['thumbnail'])))
1638         ) {
1639             $elem = $LINKSDB[$keys[$i]];
1640             $elem['thumbnail'] = $thumbnailer->get($link['url']);
1641             $LINKSDB[$keys[$i]] = $elem;
1642             $updateDB = true;
1643             $link['thumbnail'] = $elem['thumbnail'];
1644         }
1645
1646         // Check for both signs of a note: starting with ? and 7 chars long.
1647         if ($link['url'][0] === '?' && strlen($link['url']) === 7) {
1648             $link['url'] = index_url($_SERVER) . $link['url'];
1649         }
1650
1651         $linkDisp[$keys[$i]] = $link;
1652         $i++;
1653     }
1654
1655     // If we retrieved new thumbnails, we update the database.
1656     if (!empty($updateDB)) {
1657         $LINKSDB->save($conf->get('resource.page_cache'));
1658     }
1659
1660     // Compute paging navigation
1661     $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags);
1662     $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm);
1663     $previous_page_url = '';
1664     if ($i != count($keys)) {
1665         $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl;
1666     }
1667     $next_page_url='';
1668     if ($page>1) {
1669         $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl;
1670     }
1671
1672     // Fill all template fields.
1673     $data = array(
1674         'previous_page_url' => $previous_page_url,
1675         'next_page_url' => $next_page_url,
1676         'page_current' => $page,
1677         'page_max' => $pagecount,
1678         'result_count' => count($linksToDisplay),
1679         'search_term' => $searchterm,
1680         'search_tags' => $searchtags,
1681         'visibility' => ! empty($_SESSION['visibility']) ? $_SESSION['visibility'] : '',
1682         'redirector' => $conf->get('redirector.url'),  // Optional redirector URL.
1683         'links' => $linkDisp,
1684     );
1685
1686     // If there is only a single link, we change on-the-fly the title of the page.
1687     if (count($linksToDisplay) == 1) {
1688         $data['pagetitle'] = $linksToDisplay[$keys[0]]['title'] .' - '. $conf->get('general.title');
1689     } elseif (! empty($searchterm) || ! empty($searchtags)) {
1690         $data['pagetitle'] = t('Search: ');
1691         $data['pagetitle'] .= ! empty($searchterm) ? $searchterm .' ' : '';
1692         $bracketWrap = function ($tag) {
1693             return '['. $tag .']';
1694         };
1695         $data['pagetitle'] .= ! empty($searchtags)
1696             ? implode(' ', array_map($bracketWrap, preg_split('/\s+/', $searchtags))).' '
1697             : '';
1698         $data['pagetitle'] .= '- '. $conf->get('general.title');
1699     }
1700
1701     $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => $loginManager->isLoggedIn()));
1702
1703     foreach ($data as $key => $value) {
1704         $PAGE->assign($key, $value);
1705     }
1706
1707     return;
1708 }
1709
1710 /**
1711  * Installation
1712  * This function should NEVER be called if the file data/config.php exists.
1713  *
1714  * @param ConfigManager  $conf           Configuration Manager instance.
1715  * @param SessionManager $sessionManager SessionManager instance
1716  * @param LoginManager   $loginManager   LoginManager instance
1717  */
1718 function install($conf, $sessionManager, $loginManager) {
1719     // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
1720     if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705);
1721
1722
1723     // This part makes sure sessions works correctly.
1724     // (Because on some hosts, session.save_path may not be set correctly,
1725     // or we may not have write access to it.)
1726     if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working'))
1727     {
1728         // Step 2: Check if data in session is correct.
1729         $msg = t(
1730             '<pre>Sessions do not seem to work correctly on your server.<br>'.
1731             'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
1732             'and that you have write access to it.<br>'.
1733             'It currently points to %s.<br>'.
1734             'On some browsers, accessing your server via a hostname like \'localhost\' '.
1735             'or any custom hostname without a dot causes cookie storage to fail. '.
1736             'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
1737         );
1738         $msg = sprintf($msg, session_save_path());
1739         echo $msg;
1740         echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>';
1741         die;
1742     }
1743     if (!isset($_SESSION['session_tested']))
1744     {   // Step 1 : Try to store data in session and reload page.
1745         $_SESSION['session_tested'] = 'Working';  // Try to set a variable in session.
1746         header('Location: '.index_url($_SERVER).'?test_session');  // Redirect to check stored data.
1747     }
1748     if (isset($_GET['test_session']))
1749     {   // Step 3: Sessions are OK. Remove test parameter from URL.
1750         header('Location: '.index_url($_SERVER));
1751     }
1752
1753
1754     if (!empty($_POST['setlogin']) && !empty($_POST['setpassword']))
1755     {
1756         $tz = 'UTC';
1757         if (!empty($_POST['continent']) && !empty($_POST['city'])
1758             && isTimeZoneValid($_POST['continent'], $_POST['city'])
1759         ) {
1760             $tz = $_POST['continent'].'/'.$_POST['city'];
1761         }
1762         $conf->set('general.timezone', $tz);
1763         $login = $_POST['setlogin'];
1764         $conf->set('credentials.login', $login);
1765         $salt = sha1(uniqid('', true) .'_'. mt_rand());
1766         $conf->set('credentials.salt', $salt);
1767         $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt));
1768         if (!empty($_POST['title'])) {
1769             $conf->set('general.title', escape($_POST['title']));
1770         } else {
1771             $conf->set('general.title', 'Shared links on '.escape(index_url($_SERVER)));
1772         }
1773         $conf->set('translation.language', escape($_POST['language']));
1774         $conf->set('updates.check_updates', !empty($_POST['updateCheck']));
1775         $conf->set('api.enabled', !empty($_POST['enableApi']));
1776         $conf->set(
1777             'api.secret',
1778             generate_api_secret(
1779                 $conf->get('credentials.login'),
1780                 $conf->get('credentials.salt')
1781             )
1782         );
1783         try {
1784             // Everything is ok, let's create config file.
1785             $conf->write($loginManager->isLoggedIn());
1786         }
1787         catch(Exception $e) {
1788             error_log(
1789                     'ERROR while writing config file after installation.' . PHP_EOL .
1790                     $e->getMessage()
1791                 );
1792
1793             // TODO: do not handle exceptions/errors in JS.
1794             echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>';
1795             exit;
1796         }
1797         echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
1798         exit;
1799     }
1800
1801     $PAGE = new PageBuilder($conf, $_SESSION, null, $sessionManager->generateToken());
1802     list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get());
1803     $PAGE->assign('continents', $continents);
1804     $PAGE->assign('cities', $cities);
1805     $PAGE->assign('languages', Languages::getAvailableLanguages());
1806     $PAGE->renderPage('install');
1807     exit;
1808 }
1809
1810 if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) { showDailyRSS($conf); exit; }
1811 if (!isset($_SESSION['LINKS_PER_PAGE'])) {
1812     $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20);
1813 }
1814
1815 try {
1816     $history = new History($conf->get('resource.history'));
1817 } catch(Exception $e) {
1818     die($e->getMessage());
1819 }
1820
1821 $linkDb = new LinkDB(
1822     $conf->get('resource.datastore'),
1823     $loginManager->isLoggedIn(),
1824     $conf->get('privacy.hide_public_links'),
1825     $conf->get('redirector.url'),
1826     $conf->get('redirector.encode_url')
1827 );
1828
1829 $container = new \Slim\Container();
1830 $container['conf'] = $conf;
1831 $container['plugins'] = $pluginManager;
1832 $container['history'] = $history;
1833 $app = new \Slim\App($container);
1834
1835 // REST API routes
1836 $app->group('/api/v1', function() {
1837     $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo');
1838     $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks');
1839     $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink');
1840     $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink');
1841     $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink');
1842     $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink');
1843     $this->get('/history', '\Shaarli\Api\Controllers\History:getHistory')->setName('getHistory');
1844 })->add('\Shaarli\Api\ApiMiddleware');
1845
1846 $response = $app->run(true);
1847 // Hack to make Slim and Shaarli router work together:
1848 // If a Slim route isn't found and NOT API call, we call renderPage().
1849 if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) {
1850     // We use UTF-8 for proper international characters handling.
1851     header('Content-Type: text/html; charset=utf-8');
1852     renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager, $loginManager);
1853 } else {
1854     $app->respond($response);
1855 }