<?php /** * Shaarli - The personal, minimalist, super-fast, database free, bookmarking service. * * Friendly fork by the Shaarli community: * - https://github.com/shaarli/Shaarli * * Original project by sebsauvage.net: * - http://sebsauvage.net/wiki/doku.php?id=php:shaarli * - https://github.com/sebsauvage/Shaarli * * Licence: http://www.opensource.org/licenses/zlib-license.php * * Requires: PHP 5.5.x */ // Set 'UTC' as the default timezone if it is not defined in php.ini // See http://php.net/manual/en/datetime.configuration.php#ini.date.timezone if (date_default_timezone_get() == '') { date_default_timezone_set('UTC'); } /* * PHP configuration */ // http://server.com/x/shaarli --> /shaarli/ define('WEB_PATH', substr($_SERVER['REQUEST_URI'], 0, 1+strrpos($_SERVER['REQUEST_URI'], '/', 0))); // High execution time in case of problematic imports/exports. ini_set('max_input_time','60'); // Try to set max upload file size and read ini_set('memory_limit', '128M'); ini_set('post_max_size', '16M'); ini_set('upload_max_filesize', '16M'); // See all error except warnings error_reporting(E_ALL^E_WARNING); // See all errors (for debugging only) //error_reporting(-1); // 3rd-party libraries if (! file_exists(__DIR__ . '/vendor/autoload.php')) { header('Content-Type: text/plain; charset=utf-8'); echo "Error: missing Composer configuration\n\n" ."If you installed Shaarli through Git or using the development branch,\n" ."please refer to the installation documentation to install PHP" ." dependencies using Composer:\n" ."- https://shaarli.readthedocs.io/en/master/Server-requirements/\n" ."- https://shaarli.readthedocs.io/en/master/Download-and-Installation/"; exit; } require_once 'inc/rain.tpl.class.php'; require_once __DIR__ . '/vendor/autoload.php'; // Shaarli library require_once 'application/ApplicationUtils.php'; require_once 'application/Cache.php'; require_once 'application/CachedPage.php'; require_once 'application/config/ConfigPlugin.php'; require_once 'application/FeedBuilder.php'; require_once 'application/FileUtils.php'; require_once 'application/History.php'; require_once 'application/HttpUtils.php'; require_once 'application/LinkDB.php'; require_once 'application/LinkFilter.php'; require_once 'application/LinkUtils.php'; require_once 'application/NetscapeBookmarkUtils.php'; require_once 'application/PageBuilder.php'; require_once 'application/TimeZone.php'; require_once 'application/Url.php'; require_once 'application/Utils.php'; require_once 'application/PluginManager.php'; require_once 'application/Router.php'; require_once 'application/Updater.php'; use \Shaarli\Languages; use \Shaarli\ThemeUtils; use \Shaarli\Config\ConfigManager; use \Shaarli\SessionManager; // Ensure the PHP version is supported try { ApplicationUtils::checkPHPVersion('5.5', PHP_VERSION); } catch(Exception $exc) { header('Content-Type: text/plain; charset=utf-8'); echo $exc->getMessage(); exit; } define('SHAARLI_VERSION', ApplicationUtils::getVersion(__DIR__ .'/'. ApplicationUtils::$VERSION_FILE)); // Force cookie path (but do not change lifetime) $cookie = session_get_cookie_params(); $cookiedir = ''; if (dirname($_SERVER['SCRIPT_NAME']) != '/') { $cookiedir = dirname($_SERVER["SCRIPT_NAME"]).'/'; } // Set default cookie expiration and path. session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['SERVER_NAME']); // Set session parameters on server side. // If the user does not access any page within this time, his/her session is considered expired. define('INACTIVITY_TIMEOUT', 3600); // in seconds. // Use cookies to store session. ini_set('session.use_cookies', 1); // Force cookies for session (phpsessionID forbidden in URL). ini_set('session.use_only_cookies', 1); // Prevent PHP form using sessionID in URL if cookies are disabled. ini_set('session.use_trans_sid', false); session_name('shaarli'); // Start session if needed (Some server auto-start sessions). if (session_id() == '') { session_start(); } // Regenerate session ID if invalid or not defined in cookie. if (isset($_COOKIE['shaarli']) && !SessionManager::checkId($_COOKIE['shaarli'])) { session_regenerate_id(true); $_COOKIE['shaarli'] = session_id(); } $conf = new ConfigManager(); $sessionManager = new SessionManager($_SESSION, $conf); // Sniff browser language and set date format accordingly. if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) { autoLocale($_SERVER['HTTP_ACCEPT_LANGUAGE']); } new Languages(setlocale(LC_MESSAGES, 0), $conf); $conf->setEmpty('general.timezone', date_default_timezone_get()); $conf->setEmpty('general.title', t('Shared links on '). escape(index_url($_SERVER))); RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl').'/'.$conf->get('resource.theme').'/'; // template directory RainTPL::$cache_dir = $conf->get('resource.raintpl_tmp'); // cache directory $pluginManager = new PluginManager($conf); $pluginManager->load($conf->get('general.enabled_plugins')); date_default_timezone_set($conf->get('general.timezone', 'UTC')); ob_start(); // Output buffering for the page cache. // Prevent caching on client side or proxy: (yes, it's ugly) header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); header("Cache-Control: no-store, no-cache, must-revalidate"); header("Cache-Control: post-check=0, pre-check=0", false); header("Pragma: no-cache"); if (! is_file($conf->getConfigFileExt())) { // Ensure Shaarli has proper access to its resources $errors = ApplicationUtils::checkResourcePermissions($conf); if ($errors != array()) { $message = '<p>'. t('Insufficient permissions:') .'</p><ul>'; foreach ($errors as $error) { $message .= '<li>'.$error.'</li>'; } $message .= '</ul>'; header('Content-Type: text/html; charset=utf-8'); echo $message; exit; } // Display the installation form if no existing config is found install($conf, $sessionManager); } // a token depending of deployment salt, user password, and the current ip define('STAY_SIGNED_IN_TOKEN', sha1($conf->get('credentials.hash') . $_SERVER['REMOTE_ADDR'] . $conf->get('credentials.salt'))); /** * Checking session state (i.e. is the user still logged in) * * @param ConfigManager $conf The configuration manager. * * @return bool: true if the user is logged in, false otherwise. */ function setup_login_state($conf) { if ($conf->get('security.open_shaarli')) { return true; } $userIsLoggedIn = false; // By default, we do not consider the user as logged in; $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met. if (! $conf->exists('credentials.login')) { $userIsLoggedIn = false; // Shaarli is not configured yet. $loginFailure = true; } if (isset($_COOKIE['shaarli_staySignedIn']) && $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN && !$loginFailure) { fillSessionInfo($conf); $userIsLoggedIn = true; } // If session does not exist on server side, or IP address has changed, or session has expired, logout. if (empty($_SESSION['uid']) || ($conf->get('security.session_protection_disabled') === false && $_SESSION['ip'] != allIPs()) || time() >= $_SESSION['expires_on']) { logout(); $userIsLoggedIn = false; $loginFailure = true; } if (!empty($_SESSION['longlastingsession'])) { $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // In case of "Stay signed in" checked. } else { $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Standard session expiration date. } if (!$loginFailure) { $userIsLoggedIn = true; } return $userIsLoggedIn; } $userIsLoggedIn = setup_login_state($conf); // ------------------------------------------------------------------------------------------ // Session management // Returns the IP address of the client (Used to prevent session cookie hijacking.) function allIPs() { $ip = $_SERVER['REMOTE_ADDR']; // Then we use more HTTP headers to prevent session hijacking from users behind the same proxy. if (isset($_SERVER['HTTP_X_FORWARDED_FOR'])) { $ip=$ip.'_'.$_SERVER['HTTP_X_FORWARDED_FOR']; } if (isset($_SERVER['HTTP_CLIENT_IP'])) { $ip=$ip.'_'.$_SERVER['HTTP_CLIENT_IP']; } return $ip; } /** * Load user session. * * @param ConfigManager $conf Configuration Manager instance. */ function fillSessionInfo($conf) { $_SESSION['uid'] = sha1(uniqid('',true).'_'.mt_rand()); // Generate unique random number (different than phpsessionid) $_SESSION['ip']=allIPs(); // We store IP address(es) of the client to make sure session is not hijacked. $_SESSION['username']= $conf->get('credentials.login'); $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration. } /** * Check that user/password is correct. * * @param string $login Username * @param string $password User password * @param ConfigManager $conf Configuration Manager instance. * * @return bool: authentication successful or not. */ function check_auth($login, $password, $conf) { $hash = sha1($password . $login . $conf->get('credentials.salt')); if ($login == $conf->get('credentials.login') && $hash == $conf->get('credentials.hash')) { // Login/password is correct. fillSessionInfo($conf); logm($conf->get('resource.log'), $_SERVER['REMOTE_ADDR'], 'Login successful'); return true; } logm($conf->get('resource.log'), $_SERVER['REMOTE_ADDR'], 'Login failed for user '.$login); return false; } // Returns true if the user is logged in. function isLoggedIn() { global $userIsLoggedIn; return $userIsLoggedIn; } // Force logout. function logout() { if (isset($_SESSION)) { unset($_SESSION['uid']); unset($_SESSION['ip']); unset($_SESSION['username']); unset($_SESSION['privateonly']); unset($_SESSION['untaggedonly']); } setcookie('shaarli_staySignedIn', FALSE, 0, WEB_PATH); } // ------------------------------------------------------------------------------------------ // Brute force protection system // Several consecutive failed logins will ban the IP address for 30 minutes. if (!is_file($conf->get('resource.ban_file', 'data/ipbans.php'))) { // FIXME! globals file_put_contents( $conf->get('resource.ban_file', 'data/ipbans.php'), "<?php\n\$GLOBALS['IPBANS']=".var_export(array('FAILURES'=>array(),'BANS'=>array()),true).";\n?>" ); } include $conf->get('resource.ban_file', 'data/ipbans.php'); /** * Signal a failed login. Will ban the IP if too many failures: * * @param ConfigManager $conf Configuration Manager instance. */ function ban_loginFailed($conf) { $ip = $_SERVER['REMOTE_ADDR']; $trusted = $conf->get('security.trusted_proxies', array()); if (in_array($ip, $trusted)) { $ip = getIpAddressFromProxy($_SERVER, $trusted); if (!$ip) { return; } } $gb = $GLOBALS['IPBANS']; if (! isset($gb['FAILURES'][$ip])) { $gb['FAILURES'][$ip]=0; } $gb['FAILURES'][$ip]++; if ($gb['FAILURES'][$ip] > ($conf->get('security.ban_after') - 1)) { $gb['BANS'][$ip] = time() + $conf->get('security.ban_after', 1800); logm($conf->get('resource.log'), $_SERVER['REMOTE_ADDR'], 'IP address banned from login'); } $GLOBALS['IPBANS'] = $gb; file_put_contents( $conf->get('resource.ban_file', 'data/ipbans.php'), "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>" ); } /** * Signals a successful login. Resets failed login counter. * * @param ConfigManager $conf Configuration Manager instance. */ function ban_loginOk($conf) { $ip = $_SERVER['REMOTE_ADDR']; $gb = $GLOBALS['IPBANS']; unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]); $GLOBALS['IPBANS'] = $gb; file_put_contents( $conf->get('resource.ban_file', 'data/ipbans.php'), "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>" ); } /** * Checks if the user CAN login. If 'true', the user can try to login. * * @param ConfigManager $conf Configuration Manager instance. * * @return bool: true if the user is allowed to login. */ function ban_canLogin($conf) { $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS']; if (isset($gb['BANS'][$ip])) { // User is banned. Check if the ban has expired: if ($gb['BANS'][$ip]<=time()) { // Ban expired, user can try to login again. logm($conf->get('resource.log'), $_SERVER['REMOTE_ADDR'], 'Ban lifted.'); unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]); file_put_contents( $conf->get('resource.ban_file', 'data/ipbans.php'), "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>" ); return true; // Ban has expired, user can login. } return false; // User is banned. } return true; // User is not banned. } // ------------------------------------------------------------------------------------------ // Process login form: Check if login/password is correct. if (isset($_POST['login'])) { if (!ban_canLogin($conf)) die(t('I said: NO. You are banned for the moment. Go away.')); if (isset($_POST['password']) && $sessionManager->checkToken($_POST['token']) && (check_auth($_POST['login'], $_POST['password'], $conf)) ) { // Login/password is OK. ban_loginOk($conf); // If user wants to keep the session cookie even after the browser closes: if (!empty($_POST['longlastingsession'])) { $_SESSION['longlastingsession'] = 31536000; // (31536000 seconds = 1 year) $expiration = time() + $_SESSION['longlastingsession']; // calculate relative cookie expiration (1 year from now) setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, $expiration, WEB_PATH); $_SESSION['expires_on'] = $expiration; // Set session expiration on server-side. $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/'; session_set_cookie_params($_SESSION['longlastingsession'],$cookiedir,$_SERVER['SERVER_NAME']); // Set session cookie expiration on client side // Note: Never forget the trailing slash on the cookie path! session_regenerate_id(true); // Send cookie with new expiration date to browser. } else // Standard session expiration (=when browser closes) { $cookiedir = ''; if(dirname($_SERVER['SCRIPT_NAME'])!='/') $cookiedir=dirname($_SERVER["SCRIPT_NAME"]).'/'; session_set_cookie_params(0,$cookiedir,$_SERVER['SERVER_NAME']); // 0 means "When browser closes" session_regenerate_id(true); } // Optional redirect after login: if (isset($_GET['post'])) { $uri = '?post='. urlencode($_GET['post']); foreach (array('description', 'source', 'title', 'tags') as $param) { if (!empty($_GET[$param])) { $uri .= '&'.$param.'='.urlencode($_GET[$param]); } } header('Location: '. $uri); exit; } if (isset($_GET['edit_link'])) { header('Location: ?edit_link='. escape($_GET['edit_link'])); exit; } if (isset($_POST['returnurl'])) { // Prevent loops over login screen. if (strpos($_POST['returnurl'], 'do=login') === false) { header('Location: '. generateLocation($_POST['returnurl'], $_SERVER['HTTP_HOST'])); exit; } } header('Location: ?'); exit; } else { ban_loginFailed($conf); $redir = '&username='. $_POST['login']; if (isset($_GET['post'])) { $redir .= '&post=' . urlencode($_GET['post']); foreach (array('description', 'source', 'title', 'tags') as $param) { if (!empty($_GET[$param])) { $redir .= '&' . $param . '=' . urlencode($_GET[$param]); } } } // Redirect to login screen. echo '<script>alert("'. t("Wrong login/password.") .'");document.location=\'?do=login'.$redir.'\';</script>'; exit; } } // ------------------------------------------------------------------------------------------ // Token management for XSRF protection // Token should be used in any form which acts on data (create,update,delete,import...). if (!isset($_SESSION['tokens'])) $_SESSION['tokens']=array(); // Token are attached to the session. /** * Daily RSS feed: 1 RSS entry per day giving all the links on that day. * Gives the last 7 days (which have links). * This RSS feed cannot be filtered. * * @param ConfigManager $conf Configuration Manager instance. */ function showDailyRSS($conf) { // Cache system $query = $_SERVER['QUERY_STRING']; $cache = new CachedPage( $conf->get('config.PAGE_CACHE'), page_url($_SERVER), startsWith($query,'do=dailyrss') && !isLoggedIn() ); $cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; } // If cached was not found (or not usable), then read the database and build the response: // Read links from database (and filter private links if used it not logged in). $LINKSDB = new LinkDB( $conf->get('resource.datastore'), isLoggedIn(), $conf->get('privacy.hide_public_links'), $conf->get('redirector.url'), $conf->get('redirector.encode_url') ); /* Some Shaarlies may have very few links, so we need to look back in time until we have enough days ($nb_of_days). */ $nb_of_days = 7; // We take 7 days. $today = date('Ymd'); $days = array(); foreach ($LINKSDB as $link) { $day = $link['created']->format('Ymd'); // Extract day (without time) if (strcmp($day, $today) < 0) { if (empty($days[$day])) { $days[$day] = array(); } $days[$day][] = $link; } if (count($days) > $nb_of_days) { break; // Have we collected enough days? } } // Build the RSS feed. header('Content-Type: application/rss+xml; charset=utf-8'); $pageaddr = escape(index_url($_SERVER)); echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">'; echo '<channel>'; echo '<title>Daily - '. $conf->get('general.title') . '</title>'; echo '<link>'. $pageaddr .'</link>'; echo '<description>Daily shared links</description>'; echo '<language>en-en</language>'; echo '<copyright>'. $pageaddr .'</copyright>'. PHP_EOL; // For each day. foreach ($days as $day => $links) { $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000'); $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page. // We pre-format some fields for proper output. foreach ($links as &$link) { $link['formatedDescription'] = format_description( $link['description'], $conf->get('redirector.url'), $conf->get('redirector.encode_url') ); $link['thumbnail'] = thumbnail($conf, $link['url']); $link['timestamp'] = $link['created']->getTimestamp(); if (startsWith($link['url'], '?')) { $link['url'] = index_url($_SERVER) . $link['url']; // make permalink URL absolute } } // Then build the HTML for this day: $tpl = new RainTPL; $tpl->assign('title', $conf->get('general.title')); $tpl->assign('daydate', $dayDate->getTimestamp()); $tpl->assign('absurl', $absurl); $tpl->assign('links', $links); $tpl->assign('rssdate', escape($dayDate->format(DateTime::RSS))); $tpl->assign('hide_timestamps', $conf->get('privacy.hide_timestamps', false)); $html = $tpl->draw('dailyrss', true); echo $html . PHP_EOL; } echo '</channel></rss><!-- Cached version of '. escape(page_url($_SERVER)) .' -->'; $cache->cache(ob_get_contents()); ob_end_flush(); exit; } /** * Show the 'Daily' page. * * @param PageBuilder $pageBuilder Template engine wrapper. * @param LinkDB $LINKSDB LinkDB instance. * @param ConfigManager $conf Configuration Manager instance. * @param PluginManager $pluginManager Plugin Manager instane. */ function showDaily($pageBuilder, $LINKSDB, $conf, $pluginManager) { $day = date('Ymd', strtotime('-1 day')); // Yesterday, in format YYYYMMDD. if (isset($_GET['day'])) { $day = $_GET['day']; } $days = $LINKSDB->days(); $i = array_search($day, $days); if ($i === false && count($days)) { // no links for day, but at least one day with links $i = count($days) - 1; $day = $days[$i]; } $previousday = ''; $nextday = ''; if ($i !== false) { if ($i >= 1) { $previousday=$days[$i - 1]; } if ($i < count($days) - 1) { $nextday = $days[$i + 1]; } } try { $linksToDisplay = $LINKSDB->filterDay($day); } catch (Exception $exc) { error_log($exc); $linksToDisplay = array(); } // We pre-format some fields for proper output. foreach($linksToDisplay as $key => $link) { $taglist = explode(' ',$link['tags']); uasort($taglist, 'strcasecmp'); $linksToDisplay[$key]['taglist']=$taglist; $linksToDisplay[$key]['formatedDescription'] = format_description( $link['description'], $conf->get('redirector.url'), $conf->get('redirector.encode_url') ); $linksToDisplay[$key]['thumbnail'] = thumbnail($conf, $link['url']); $linksToDisplay[$key]['timestamp'] = $link['created']->getTimestamp(); } /* We need to spread the articles on 3 columns. I did not want to use a JavaScript lib like http://masonry.desandro.com/ so I manually spread entries with a simple method: I roughly evaluate the height of a div according to title and description length. */ $columns = array(array(), array(), array()); // Entries to display, for each column. $fill = array(0, 0, 0); // Rough estimate of columns fill. foreach($linksToDisplay as $key => $link) { // Roughly estimate length of entry (by counting characters) // Title: 30 chars = 1 line. 1 line is 30 pixels height. // Description: 836 characters gives roughly 342 pixel height. // This is not perfect, but it's usually OK. $length = strlen($link['title']) + (342 * strlen($link['description'])) / 836; if ($link['thumbnail']) { $length += 100; // 1 thumbnails roughly takes 100 pixels height. } // Then put in column which is the less filled: $smallest = min($fill); // find smallest value in array. $index = array_search($smallest, $fill); // find index of this smallest value. array_push($columns[$index], $link); // Put entry in this column. $fill[$index] += $length; } $dayDate = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $day.'_000000'); $data = array( 'pagetitle' => $conf->get('general.title') .' - '. format_date($dayDate, false), 'linksToDisplay' => $linksToDisplay, 'cols' => $columns, 'day' => $dayDate->getTimestamp(), 'dayDate' => $dayDate, 'previousday' => $previousday, 'nextday' => $nextday, ); $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn())); foreach ($data as $key => $value) { $pageBuilder->assign($key, $value); } $pageBuilder->renderPage('daily'); exit; } /** * Renders the linklist * * @param pageBuilder $PAGE pageBuilder instance. * @param LinkDB $LINKSDB LinkDB instance. * @param ConfigManager $conf Configuration Manager instance. * @param PluginManager $pluginManager Plugin Manager instance. */ function showLinkList($PAGE, $LINKSDB, $conf, $pluginManager) { buildLinkList($PAGE,$LINKSDB, $conf, $pluginManager); // Compute list of links to display $PAGE->renderPage('linklist'); } /** * Render HTML page (according to URL parameters and user rights) * * @param ConfigManager $conf Configuration Manager instance. * @param PluginManager $pluginManager Plugin Manager instance, * @param LinkDB $LINKSDB * @param History $history instance * @param SessionManager $sessionManager SessionManager instance */ function renderPage($conf, $pluginManager, $LINKSDB, $history, $sessionManager) { $updater = new Updater( read_updates_file($conf->get('resource.updates')), $LINKSDB, $conf, isLoggedIn() ); try { $newUpdates = $updater->update(); if (! empty($newUpdates)) { write_updates_file( $conf->get('resource.updates'), $updater->getDoneUpdates() ); } } catch(Exception $e) { die($e->getMessage()); } $PAGE = new PageBuilder($conf, $LINKSDB, $sessionManager->generateToken()); $PAGE->assign('linkcount', count($LINKSDB)); $PAGE->assign('privateLinkcount', count_private($LINKSDB)); $PAGE->assign('plugin_errors', $pluginManager->getErrors()); // Determine which page will be rendered. $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : ''; $targetPage = Router::findPage($query, $_GET, isLoggedIn()); if ( // if the user isn't logged in !isLoggedIn() && // and Shaarli doesn't have public content... $conf->get('privacy.hide_public_links') && // and is configured to enforce the login $conf->get('privacy.force_login') && // and the current page isn't already the login page $targetPage !== Router::$PAGE_LOGIN && // and the user is not requesting a feed (which would lead to a different content-type as expected) $targetPage !== Router::$PAGE_FEED_ATOM && $targetPage !== Router::$PAGE_FEED_RSS ) { // force current page to be the login page $targetPage = Router::$PAGE_LOGIN; } // Call plugin hooks for header, footer and includes, specifying which page will be rendered. // Then assign generated data to RainTPL. $common_hooks = array( 'includes', 'header', 'footer', ); foreach($common_hooks as $name) { $plugin_data = array(); $pluginManager->executeHooks('render_' . $name, $plugin_data, array( 'target' => $targetPage, 'loggedin' => isLoggedIn() ) ); $PAGE->assign('plugins_' . $name, $plugin_data); } // -------- Display login form. if ($targetPage == Router::$PAGE_LOGIN) { if ($conf->get('security.open_shaarli')) { header('Location: ?'); exit; } // No need to login for open Shaarli if (isset($_GET['username'])) { $PAGE->assign('username', escape($_GET['username'])); } $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):'')); // add default state of the 'remember me' checkbox $PAGE->assign('remember_user_default', $conf->get('privacy.remember_user_default')); $PAGE->renderPage('loginform'); exit; } // -------- User wants to logout. if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=logout')) { invalidateCaches($conf->get('resource.page_cache')); logout(); header('Location: ?'); exit; } // -------- Picture wall if ($targetPage == Router::$PAGE_PICWALL) { // Optionally filter the results: $links = $LINKSDB->filterSearch($_GET); $linksToDisplay = array(); // Get only links which have a thumbnail. foreach($links as $link) { $permalink='?'.$link['shorturl']; $thumb=lazyThumbnail($conf, $link['url'],$permalink); if ($thumb!='') // Only output links which have a thumbnail. { $link['thumbnail']=$thumb; // Thumbnail HTML code. $linksToDisplay[]=$link; // Add to array. } } $data = array( 'linksToDisplay' => $linksToDisplay, ); $pluginManager->executeHooks('render_picwall', $data, array('loggedin' => isLoggedIn())); foreach ($data as $key => $value) { $PAGE->assign($key, $value); } $PAGE->renderPage('picwall'); exit; } // -------- Tag cloud if ($targetPage == Router::$PAGE_TAGCLOUD) { $visibility = ! empty($_SESSION['privateonly']) ? 'private' : 'all'; $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : []; $tags = $LINKSDB->linksCountPerTag($filteringTags, $visibility); // We sort tags alphabetically, then choose a font size according to count. // First, find max value. $maxcount = 0; foreach ($tags as $value) { $maxcount = max($maxcount, $value); } alphabetical_sort($tags, false, true); $tagList = array(); foreach($tags as $key => $value) { if (in_array($key, $filteringTags)) { continue; } // Tag font size scaling: // default 15 and 30 logarithm bases affect scaling, // 22 and 6 are arbitrary font sizes for max and min sizes. $size = log($value, 15) / log($maxcount, 30) * 2.2 + 0.8; $tagList[$key] = array( 'count' => $value, 'size' => number_format($size, 2, '.', ''), ); } $data = array( 'search_tags' => implode(' ', escape($filteringTags)), 'tags' => $tagList, ); $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn())); foreach ($data as $key => $value) { $PAGE->assign($key, $value); } $PAGE->renderPage('tag.cloud'); exit; } // -------- Tag list if ($targetPage == Router::$PAGE_TAGLIST) { $visibility = ! empty($_SESSION['privateonly']) ? 'private' : 'all'; $filteringTags = isset($_GET['searchtags']) ? explode(' ', $_GET['searchtags']) : []; $tags = $LINKSDB->linksCountPerTag($filteringTags, $visibility); foreach ($filteringTags as $tag) { if (array_key_exists($tag, $tags)) { unset($tags[$tag]); } } if (! empty($_GET['sort']) && $_GET['sort'] === 'alpha') { alphabetical_sort($tags, false, true); } $data = [ 'search_tags' => implode(' ', escape($filteringTags)), 'tags' => $tags, ]; $pluginManager->executeHooks('render_taglist', $data, ['loggedin' => isLoggedIn()]); foreach ($data as $key => $value) { $PAGE->assign($key, $value); } $PAGE->renderPage('tag.list'); exit; } // Daily page. if ($targetPage == Router::$PAGE_DAILY) { showDaily($PAGE, $LINKSDB, $conf, $pluginManager); } // ATOM and RSS feed. if ($targetPage == Router::$PAGE_FEED_ATOM || $targetPage == Router::$PAGE_FEED_RSS) { $feedType = $targetPage == Router::$PAGE_FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM; header('Content-Type: application/'. $feedType .'+xml; charset=utf-8'); // Cache system $query = $_SERVER['QUERY_STRING']; $cache = new CachedPage( $conf->get('resource.page_cache'), page_url($_SERVER), startsWith($query,'do='. $targetPage) && !isLoggedIn() ); $cached = $cache->cachedVersion(); if (!empty($cached)) { echo $cached; exit; } // Generate data. $feedGenerator = new FeedBuilder($LINKSDB, $feedType, $_SERVER, $_GET, isLoggedIn()); $feedGenerator->setLocale(strtolower(setlocale(LC_COLLATE, 0))); $feedGenerator->setHideDates($conf->get('privacy.hide_timestamps') && !isLoggedIn()); $feedGenerator->setUsePermalinks(isset($_GET['permalinks']) || !$conf->get('feed.rss_permalinks')); $data = $feedGenerator->buildData(); // Process plugin hook. $pluginManager->executeHooks('render_feed', $data, array( 'loggedin' => isLoggedIn(), 'target' => $targetPage, )); // Render the template. $PAGE->assignAll($data); $PAGE->renderPage('feed.'. $feedType); $cache->cache(ob_get_contents()); ob_end_flush(); exit; } // Display opensearch plugin (XML) if ($targetPage == Router::$PAGE_OPENSEARCH) { header('Content-Type: application/xml; charset=utf-8'); $PAGE->assign('serverurl', index_url($_SERVER)); $PAGE->renderPage('opensearch'); exit; } // -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...) if (isset($_GET['addtag'])) { // Get previous URL (http_referer) and add the tag to the searchtags parameters in query. if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?searchtags='.urlencode($_GET['addtag'])); exit; } // In case browser does not send HTTP_REFERER parse_str(parse_url($_SERVER['HTTP_REFERER'],PHP_URL_QUERY), $params); // Prevent redirection loop if (isset($params['addtag'])) { unset($params['addtag']); } // Check if this tag is already in the search query and ignore it if it is. // Each tag is always separated by a space if (isset($params['searchtags'])) { $current_tags = explode(' ', $params['searchtags']); } else { $current_tags = array(); } $addtag = true; foreach ($current_tags as $value) { if ($value === $_GET['addtag']) { $addtag = false; break; } } // Append the tag if necessary if (empty($params['searchtags'])) { $params['searchtags'] = trim($_GET['addtag']); } else if ($addtag) { $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']); } unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different) header('Location: ?'.http_build_query($params)); exit; } // -------- User clicks on a tag in result count: Remove the tag from the list of searched tags (searchtags=...) if (isset($_GET['removetag'])) { // Get previous URL (http_referer) and remove the tag from the searchtags parameters in query. if (empty($_SERVER['HTTP_REFERER'])) { header('Location: ?'); exit; } // In case browser does not send HTTP_REFERER parse_str(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_QUERY), $params); // Prevent redirection loop if (isset($params['removetag'])) { unset($params['removetag']); } if (isset($params['searchtags'])) { $tags = explode(' ', $params['searchtags']); // Remove value from array $tags. $tags = array_diff($tags, array($_GET['removetag'])); $params['searchtags'] = implode(' ',$tags); if (empty($params['searchtags'])) { unset($params['searchtags']); } unset($params['page']); // We also remove page (keeping the same page has no sense, since the results are different) } header('Location: ?'.http_build_query($params)); exit; } // -------- User wants to change the number of links per page (linksperpage=...) if (isset($_GET['linksperpage'])) { if (is_numeric($_GET['linksperpage'])) { $_SESSION['LINKS_PER_PAGE']=abs(intval($_GET['linksperpage'])); } if (! empty($_SERVER['HTTP_REFERER'])) { $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')); } else { $location = '?'; } header('Location: '. $location); exit; } // -------- User wants to see only private links (toggle) if (isset($_GET['privateonly'])) { if (empty($_SESSION['privateonly'])) { $_SESSION['privateonly'] = 1; // See only private links } else { unset($_SESSION['privateonly']); // See all links } if (! empty($_SERVER['HTTP_REFERER'])) { $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')); } else { $location = '?'; } header('Location: '. $location); exit; } // -------- User wants to see only untagged links (toggle) if (isset($_GET['untaggedonly'])) { $_SESSION['untaggedonly'] = empty($_SESSION['untaggedonly']); if (! empty($_SERVER['HTTP_REFERER'])) { $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('untaggedonly')); } else { $location = '?'; } header('Location: '. $location); exit; } // -------- Handle other actions allowed for non-logged in users: if (!isLoggedIn()) { // User tries to post new link but is not logged in: // Show login screen, then redirect to ?post=... if (isset($_GET['post'])) { header( // Redirect to login page, then back to post link. 'Location: ?do=login&post='.urlencode($_GET['post']). (!empty($_GET['title'])?'&title='.urlencode($_GET['title']):''). (!empty($_GET['description'])?'&description='.urlencode($_GET['description']):''). (!empty($_GET['tags'])?'&tags='.urlencode($_GET['tags']):''). (!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'') ); exit; } showLinkList($PAGE, $LINKSDB, $conf, $pluginManager); if (isset($_GET['edit_link'])) { header('Location: ?do=login&edit_link='. escape($_GET['edit_link'])); exit; } exit; // Never remove this one! All operations below are reserved for logged in user. } // -------- All other functions are reserved for the registered user: // -------- Display the Tools menu if requested (import/export/bookmarklet...) if ($targetPage == Router::$PAGE_TOOLS) { $data = [ 'pageabsaddr' => index_url($_SERVER), 'sslenabled' => is_https($_SERVER), ]; $pluginManager->executeHooks('render_tools', $data); foreach ($data as $key => $value) { $PAGE->assign($key, $value); } $PAGE->renderPage('tools'); exit; } // -------- User wants to change his/her password. if ($targetPage == Router::$PAGE_CHANGEPASSWORD) { if ($conf->get('security.open_shaarli')) { die(t('You are not supposed to change a password on an Open Shaarli.')); } if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword'])) { if (!$sessionManager->checkToken($_POST['token'])) die(t('Wrong token.')); // Go away! // Make sure old password is correct. $oldhash = sha1($_POST['oldpassword'].$conf->get('credentials.login').$conf->get('credentials.salt')); if ($oldhash!= $conf->get('credentials.hash')) { echo '<script>alert("'. t('The old password is not correct.') .'");document.location=\'?do=changepasswd\';</script>'; exit; } // Save new password // Salt renders rainbow-tables attacks useless. $conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand())); $conf->set('credentials.hash', sha1($_POST['setpassword'] . $conf->get('credentials.login') . $conf->get('credentials.salt'))); try { $conf->write(isLoggedIn()); } catch(Exception $e) { error_log( 'ERROR while writing config file after changing password.' . PHP_EOL . $e->getMessage() ); // TODO: do not handle exceptions/errors in JS. echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=tools\';</script>'; exit; } echo '<script>alert("'. t('Your password has been changed') .'");document.location=\'?do=tools\';</script>'; exit; } else // show the change password form. { $PAGE->renderPage('changepassword'); exit; } } // -------- User wants to change configuration if ($targetPage == Router::$PAGE_CONFIGURE) { if (!empty($_POST['title']) ) { if (!$sessionManager->checkToken($_POST['token'])) { die(t('Wrong token.')); // Go away! } $tz = 'UTC'; if (!empty($_POST['continent']) && !empty($_POST['city']) && isTimeZoneValid($_POST['continent'], $_POST['city']) ) { $tz = $_POST['continent'] . '/' . $_POST['city']; } $conf->set('general.timezone', $tz); $conf->set('general.title', escape($_POST['title'])); $conf->set('general.header_link', escape($_POST['titleLink'])); $conf->set('resource.theme', escape($_POST['theme'])); $conf->set('redirector.url', escape($_POST['redirector'])); $conf->set('security.session_protection_disabled', !empty($_POST['disablesessionprotection'])); $conf->set('privacy.default_private_links', !empty($_POST['privateLinkByDefault'])); $conf->set('feed.rss_permalinks', !empty($_POST['enableRssPermalinks'])); $conf->set('updates.check_updates', !empty($_POST['updateCheck'])); $conf->set('privacy.hide_public_links', !empty($_POST['hidePublicLinks'])); $conf->set('api.enabled', !empty($_POST['enableApi'])); $conf->set('api.secret', escape($_POST['apiSecret'])); $conf->set('translation.language', escape($_POST['language'])); try { $conf->write(isLoggedIn()); $history->updateSettings(); invalidateCaches($conf->get('resource.page_cache')); } catch(Exception $e) { error_log( 'ERROR while writing config file after configuration update.' . PHP_EOL . $e->getMessage() ); // TODO: do not handle exceptions/errors in JS. echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do=configure\';</script>'; exit; } echo '<script>alert("'. t('Configuration was saved.') .'");document.location=\'?do=configure\';</script>'; exit; } else // Show the configuration form. { $PAGE->assign('title', $conf->get('general.title')); $PAGE->assign('theme', $conf->get('resource.theme')); $PAGE->assign('theme_available', ThemeUtils::getThemes($conf->get('resource.raintpl_tpl'))); $PAGE->assign('redirector', $conf->get('redirector.url')); list($continents, $cities) = generateTimeZoneData( timezone_identifiers_list(), $conf->get('general.timezone') ); $PAGE->assign('continents', $continents); $PAGE->assign('cities', $cities); $PAGE->assign('private_links_default', $conf->get('privacy.default_private_links', false)); $PAGE->assign('session_protection_disabled', $conf->get('security.session_protection_disabled', false)); $PAGE->assign('enable_rss_permalinks', $conf->get('feed.rss_permalinks', false)); $PAGE->assign('enable_update_check', $conf->get('updates.check_updates', true)); $PAGE->assign('hide_public_links', $conf->get('privacy.hide_public_links', false)); $PAGE->assign('api_enabled', $conf->get('api.enabled', true)); $PAGE->assign('api_secret', $conf->get('api.secret')); $PAGE->assign('languages', Languages::getAvailableLanguages()); $PAGE->assign('language', $conf->get('translation.language')); $PAGE->renderPage('configure'); exit; } } // -------- User wants to rename a tag or delete it if ($targetPage == Router::$PAGE_CHANGETAG) { if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) { $PAGE->assign('fromtag', ! empty($_GET['fromtag']) ? escape($_GET['fromtag']) : ''); $PAGE->renderPage('changetag'); exit; } if (!$sessionManager->checkToken($_POST['token'])) { die(t('Wrong token.')); } $alteredLinks = $LINKSDB->renameTag(escape($_POST['fromtag']), escape($_POST['totag'])); $LINKSDB->save($conf->get('resource.page_cache')); foreach ($alteredLinks as $link) { $history->updateLink($link); } $delete = empty($_POST['totag']); $redirect = $delete ? 'do=changetag' : 'searchtags='. urlencode(escape($_POST['totag'])); $count = count($alteredLinks); $alert = $delete ? sprintf(t('The tag was removed from %d link.', 'The tag was removed from %d links.', $count), $count) : sprintf(t('The tag was renamed in %d link.', 'The tag was renamed in %d links.', $count), $count); echo '<script>alert("'. $alert .'");document.location=\'?'. $redirect .'\';</script>'; exit; } // -------- User wants to add a link without using the bookmarklet: Show form. if ($targetPage == Router::$PAGE_ADDLINK) { $PAGE->renderPage('addlink'); exit; } // -------- User clicked the "Save" button when editing a link: Save link to database. if (isset($_POST['save_edit'])) { // Go away! if (! $sessionManager->checkToken($_POST['token'])) { die(t('Wrong token.')); } // lf_id should only be present if the link exists. $id = isset($_POST['lf_id']) ? intval(escape($_POST['lf_id'])) : $LINKSDB->getNextId(); // Linkdate is kept here to: // - use the same permalink for notes as they're displayed when creating them // - let users hack creation date of their posts // See: https://shaarli.readthedocs.io/en/master/Various-hacks/#changing-the-timestamp-for-a-shaare $linkdate = escape($_POST['lf_linkdate']); if (isset($LINKSDB[$id])) { // Edit $created = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $linkdate); $updated = new DateTime(); $shortUrl = $LINKSDB[$id]['shorturl']; $new = false; } else { // New link $created = DateTime::createFromFormat(LinkDB::LINK_DATE_FORMAT, $linkdate); $updated = null; $shortUrl = link_small_hash($created, $id); $new = true; } // Remove multiple spaces. $tags = trim(preg_replace('/\s\s+/', ' ', $_POST['lf_tags'])); // Remove first '-' char in tags. $tags = preg_replace('/(^| )\-/', '$1', $tags); // Remove duplicates. $tags = implode(' ', array_unique(explode(' ', $tags))); if (empty(trim($_POST['lf_url']))) { $_POST['lf_url'] = '?' . smallHash($linkdate . $id); } $url = whitelist_protocols(trim($_POST['lf_url']), $conf->get('security.allowed_protocols')); $link = array( 'id' => $id, 'title' => trim($_POST['lf_title']), 'url' => $url, 'description' => $_POST['lf_description'], 'private' => (isset($_POST['lf_private']) ? 1 : 0), 'created' => $created, 'updated' => $updated, 'tags' => str_replace(',', ' ', $tags), 'shorturl' => $shortUrl, ); // If title is empty, use the URL as title. if ($link['title'] == '') { $link['title'] = $link['url']; } $pluginManager->executeHooks('save_link', $link); $LINKSDB[$id] = $link; $LINKSDB->save($conf->get('resource.page_cache')); if ($new) { $history->addLink($link); } else { $history->updateLink($link); } // If we are called from the bookmarklet, we must close the popup: if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; } $returnurl = !empty($_POST['returnurl']) ? $_POST['returnurl'] : '?'; $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link')); // Scroll to the link which has been edited. $location .= '#' . $link['shorturl']; // After saving the link, redirect to the page the user was on. header('Location: '. $location); exit; } // -------- User clicked the "Cancel" button when editing a link. if (isset($_POST['cancel_edit'])) { $id = isset($_POST['lf_id']) ? (int) escape($_POST['lf_id']) : false; if (! isset($LINKSDB[$id])) { header('Location: ?'); } // If we are called from the bookmarklet, we must close the popup: if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; } $link = $LINKSDB[$id]; $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' ); // Scroll to the link which has been edited. $returnurl .= '#'. $link['shorturl']; $returnurl = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link')); header('Location: '.$returnurl); // After canceling, redirect to the page the user was on. exit; } // -------- User clicked the "Delete" button when editing a link: Delete link from database. if ($targetPage == Router::$PAGE_DELETELINK) { if (! $sessionManager->checkToken($_GET['token'])) { die(t('Wrong token.')); } $ids = trim($_GET['lf_linkdate']); if (strpos($ids, ' ') !== false) { // multiple, space-separated ids provided $ids = array_values(array_filter(preg_split('/\s+/', escape($ids)))); } else { // only a single id provided $ids = [$ids]; } // assert at least one id is given if(!count($ids)){ die('no id provided'); } foreach ($ids as $id) { $id = (int) escape($id); $link = $LINKSDB[$id]; $pluginManager->executeHooks('delete_link', $link); unset($LINKSDB[$id]); } $LINKSDB->save($conf->get('resource.page_cache')); // save to disk $history->deleteLink($link); // If we are called from the bookmarklet, we must close the popup: if (isset($_GET['source']) && ($_GET['source']=='bookmarklet' || $_GET['source']=='firefoxsocialapi')) { echo '<script>self.close();</script>'; exit; } $location = '?'; if (isset($_SERVER['HTTP_REFERER'])) { // Don't redirect to where we were previously if it was a permalink or an edit_link, because it would 404. $location = generateLocation( $_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], ['delete_link', 'edit_link', $link['shorturl']] ); } header('Location: ' . $location); // After deleting the link, redirect to appropriate location exit; } // -------- User clicked the "EDIT" button on a link: Display link edit form. if (isset($_GET['edit_link'])) { $id = (int) escape($_GET['edit_link']); $link = $LINKSDB[$id]; // Read database if (!$link) { header('Location: ?'); exit; } // Link not found in database. $link['linkdate'] = $link['created']->format(LinkDB::LINK_DATE_FORMAT); $data = array( 'link' => $link, 'link_is_new' => false, 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''), 'tags' => $LINKSDB->linksCountPerTag(), ); $pluginManager->executeHooks('render_editlink', $data); foreach ($data as $key => $value) { $PAGE->assign($key, $value); } $PAGE->renderPage('editlink'); exit; } // -------- User want to post a new link: Display link edit form. if (isset($_GET['post'])) { $url = cleanup_url($_GET['post']); $link_is_new = false; // Check if URL is not already in database (in this case, we will edit the existing link) $link = $LINKSDB->getLinkFromUrl($url); if (! $link) { $link_is_new = true; $linkdate = strval(date(LinkDB::LINK_DATE_FORMAT)); // Get title if it was provided in URL (by the bookmarklet). $title = empty($_GET['title']) ? '' : escape($_GET['title']); // Get description if it was provided in URL (by the bookmarklet). [Bronco added that] $description = empty($_GET['description']) ? '' : escape($_GET['description']); $tags = empty($_GET['tags']) ? '' : escape($_GET['tags']); $private = !empty($_GET['private']) && $_GET['private'] === "1" ? 1 : 0; // If this is an HTTP(S) link, we try go get the page to extract the title (otherwise we will to straight to the edit form.) if (empty($title) && strpos(get_url_scheme($url), 'http') !== false) { // Short timeout to keep the application responsive list($headers, $content) = get_http_response($url, 4); if (strpos($headers[0], '200 OK') !== false) { // Retrieve charset. $charset = get_charset($headers, $content); // Extract title. $title = html_extract_title($content); // Re-encode title in utf-8 if necessary. if (! empty($title) && strtolower($charset) != 'utf-8') { $title = mb_convert_encoding($title, 'utf-8', $charset); } } } if ($url == '') { $url = '?' . smallHash($linkdate . $LINKSDB->getNextId()); $title = $conf->get('general.default_note_title', t('Note: ')); } $url = escape($url); $title = escape($title); $link = array( 'linkdate' => $linkdate, 'title' => $title, 'url' => $url, 'description' => $description, 'tags' => $tags, 'private' => $private, ); } else { $link['linkdate'] = $link['created']->format(LinkDB::LINK_DATE_FORMAT); } $data = array( 'link' => $link, 'link_is_new' => $link_is_new, 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''), 'source' => (isset($_GET['source']) ? $_GET['source'] : ''), 'tags' => $LINKSDB->linksCountPerTag(), 'default_private_links' => $conf->get('privacy.default_private_links', false), ); $pluginManager->executeHooks('render_editlink', $data); foreach ($data as $key => $value) { $PAGE->assign($key, $value); } $PAGE->renderPage('editlink'); exit; } if ($targetPage == Router::$PAGE_EXPORT) { // Export links as a Netscape Bookmarks file if (empty($_GET['selection'])) { $PAGE->renderPage('export'); exit; } // export as bookmarks_(all|private|public)_YYYYmmdd_HHMMSS.html $selection = $_GET['selection']; if (isset($_GET['prepend_note_url'])) { $prependNoteUrl = $_GET['prepend_note_url']; } else { $prependNoteUrl = false; } try { $PAGE->assign( 'links', NetscapeBookmarkUtils::filterAndFormat( $LINKSDB, $selection, $prependNoteUrl, index_url($_SERVER) ) ); } catch (Exception $exc) { header('Content-Type: text/plain; charset=utf-8'); echo $exc->getMessage(); exit; } $now = new DateTime(); header('Content-Type: text/html; charset=utf-8'); header( 'Content-disposition: attachment; filename=bookmarks_' .$selection.'_'.$now->format(LinkDB::LINK_DATE_FORMAT).'.html' ); $PAGE->assign('date', $now->format(DateTime::RFC822)); $PAGE->assign('eol', PHP_EOL); $PAGE->assign('selection', $selection); $PAGE->renderPage('export.bookmarks'); exit; } if ($targetPage == Router::$PAGE_IMPORT) { // Upload a Netscape bookmark dump to import its contents if (! isset($_POST['token']) || ! isset($_FILES['filetoupload'])) { // Show import dialog $PAGE->assign( 'maxfilesize', get_max_upload_size( ini_get('post_max_size'), ini_get('upload_max_filesize'), false ) ); $PAGE->assign( 'maxfilesizeHuman', get_max_upload_size( ini_get('post_max_size'), ini_get('upload_max_filesize'), true ) ); $PAGE->renderPage('import'); exit; } // Import bookmarks from an uploaded file if (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size'] == 0) { // The file is too big or some form field may be missing. $msg = sprintf( t( 'The file you are trying to upload is probably bigger than what this webserver can accept' .' (%s). Please upload in smaller chunks.' ), get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize')) ); echo '<script>alert("'. $msg .'");document.location=\'?do='.Router::$PAGE_IMPORT .'\';</script>'; exit; } if (! $sessionManager->checkToken($_POST['token'])) { die('Wrong token.'); } $status = NetscapeBookmarkUtils::import( $_POST, $_FILES, $LINKSDB, $conf, $history ); echo '<script>alert("'.$status.'");document.location=\'?do=' .Router::$PAGE_IMPORT .'\';</script>'; exit; } // Plugin administration page if ($targetPage == Router::$PAGE_PLUGINSADMIN) { $pluginMeta = $pluginManager->getPluginsMeta(); // Split plugins into 2 arrays: ordered enabled plugins and disabled. $enabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] !== false; }); // Load parameters. $enabledPlugins = load_plugin_parameter_values($enabledPlugins, $conf->get('plugins', array())); uasort( $enabledPlugins, function($a, $b) { return $a['order'] - $b['order']; } ); $disabledPlugins = array_filter($pluginMeta, function($v) { return $v['order'] === false; }); $PAGE->assign('enabledPlugins', $enabledPlugins); $PAGE->assign('disabledPlugins', $disabledPlugins); $PAGE->renderPage('pluginsadmin'); exit; } // Plugin administration form action if ($targetPage == Router::$PAGE_SAVE_PLUGINSADMIN) { try { if (isset($_POST['parameters_form'])) { unset($_POST['parameters_form']); foreach ($_POST as $param => $value) { $conf->set('plugins.'. $param, escape($value)); } } else { $conf->set('general.enabled_plugins', save_plugin_config($_POST)); } $conf->write(isLoggedIn()); $history->updateSettings(); } catch (Exception $e) { error_log( 'ERROR while saving plugin configuration:.' . PHP_EOL . $e->getMessage() ); // TODO: do not handle exceptions/errors in JS. echo '<script>alert("'. $e->getMessage() .'");document.location=\'?do='. Router::$PAGE_PLUGINSADMIN .'\';</script>'; exit; } header('Location: ?do='. Router::$PAGE_PLUGINSADMIN); exit; } // Get a fresh token if ($targetPage == Router::$GET_TOKEN) { header('Content-Type:text/plain'); echo $sessionManager->generateToken($conf); exit; } // -------- Otherwise, simply display search form and links: showLinkList($PAGE, $LINKSDB, $conf, $pluginManager); exit; } /** * Template for the list of links (<div id="linklist">) * This function fills all the necessary fields in the $PAGE for the template 'linklist.html' * * @param pageBuilder $PAGE pageBuilder instance. * @param LinkDB $LINKSDB LinkDB instance. * @param ConfigManager $conf Configuration Manager instance. * @param PluginManager $pluginManager Plugin Manager instance. */ function buildLinkList($PAGE,$LINKSDB, $conf, $pluginManager) { // Used in templates if (isset($_GET['searchtags'])) { if (! empty($_GET['searchtags'])) { $searchtags = escape(normalize_spaces($_GET['searchtags'])); } else { $searchtags = false; } } else { $searchtags = ''; } $searchterm = !empty($_GET['searchterm']) ? escape(normalize_spaces($_GET['searchterm'])) : ''; // Smallhash filter if (! empty($_SERVER['QUERY_STRING']) && preg_match('/^[a-zA-Z0-9-_@]{6}($|&|#)/', $_SERVER['QUERY_STRING'])) { try { $linksToDisplay = $LINKSDB->filterHash($_SERVER['QUERY_STRING']); } catch (LinkNotFoundException $e) { $PAGE->render404($e->getMessage()); exit; } } else { // Filter links according search parameters. $visibility = ! empty($_SESSION['privateonly']) ? 'private' : 'all'; $request = [ 'searchtags' => $searchtags, 'searchterm' => $searchterm, ]; $linksToDisplay = $LINKSDB->filterSearch($request, false, $visibility, !empty($_SESSION['untaggedonly'])); } // ---- Handle paging. $keys = array(); foreach ($linksToDisplay as $key => $value) { $keys[] = $key; } // Select articles according to paging. $pagecount = ceil(count($keys) / $_SESSION['LINKS_PER_PAGE']); $pagecount = $pagecount == 0 ? 1 : $pagecount; $page= empty($_GET['page']) ? 1 : intval($_GET['page']); $page = $page < 1 ? 1 : $page; $page = $page > $pagecount ? $pagecount : $page; // Start index. $i = ($page-1) * $_SESSION['LINKS_PER_PAGE']; $end = $i + $_SESSION['LINKS_PER_PAGE']; $linkDisp = array(); while ($i<$end && $i<count($keys)) { $link = $linksToDisplay[$keys[$i]]; $link['description'] = format_description( $link['description'], $conf->get('redirector.url'), $conf->get('redirector.encode_url') ); $classLi = ($i % 2) != 0 ? '' : 'publicLinkHightLight'; $link['class'] = $link['private'] == 0 ? $classLi : 'private'; $link['timestamp'] = $link['created']->getTimestamp(); if (! empty($link['updated'])) { $link['updated_timestamp'] = $link['updated']->getTimestamp(); } else { $link['updated_timestamp'] = ''; } $taglist = preg_split('/\s+/', $link['tags'], -1, PREG_SPLIT_NO_EMPTY); uasort($taglist, 'strcasecmp'); $link['taglist'] = $taglist; // Check for both signs of a note: starting with ? and 7 chars long. if ($link['url'][0] === '?' && strlen($link['url']) === 7) { $link['url'] = index_url($_SERVER) . $link['url']; } $linkDisp[$keys[$i]] = $link; $i++; } // Compute paging navigation $searchtagsUrl = $searchtags === '' ? '' : '&searchtags=' . urlencode($searchtags); $searchtermUrl = empty($searchterm) ? '' : '&searchterm=' . urlencode($searchterm); $previous_page_url = ''; if ($i != count($keys)) { $previous_page_url = '?page=' . ($page+1) . $searchtermUrl . $searchtagsUrl; } $next_page_url=''; if ($page>1) { $next_page_url = '?page=' . ($page-1) . $searchtermUrl . $searchtagsUrl; } // Fill all template fields. $data = array( 'previous_page_url' => $previous_page_url, 'next_page_url' => $next_page_url, 'page_current' => $page, 'page_max' => $pagecount, 'result_count' => count($linksToDisplay), 'search_term' => $searchterm, 'search_tags' => $searchtags, 'visibility' => ! empty($_SESSION['privateonly']) ? 'private' : '', 'redirector' => $conf->get('redirector.url'), // Optional redirector URL. 'links' => $linkDisp, ); // If there is only a single link, we change on-the-fly the title of the page. if (count($linksToDisplay) == 1) { $data['pagetitle'] = $linksToDisplay[$keys[0]]['title'] .' - '. $conf->get('general.title'); } $pluginManager->executeHooks('render_linklist', $data, array('loggedin' => isLoggedIn())); foreach ($data as $key => $value) { $PAGE->assign($key, $value); } return; } /** * Compute the thumbnail for a link. * * With a link to the original URL. * Understands various services (youtube.com...) * Input: $url = URL for which the thumbnail must be found. * $href = if provided, this URL will be followed instead of $url * Returns an associative array with thumbnail attributes (src,href,width,height,style,alt) * Some of them may be missing. * Return an empty array if no thumbnail available. * * @param ConfigManager $conf Configuration Manager instance. * @param string $url * @param string|bool $href * * @return array */ function computeThumbnail($conf, $url, $href = false) { if (!$conf->get('thumbnail.enable_thumbnails')) return array(); if ($href==false) $href=$url; // For most hosts, the URL of the thumbnail can be easily deduced from the URL of the link. // (e.g. http://www.youtube.com/watch?v=spVypYk4kto ---> http://img.youtube.com/vi/spVypYk4kto/default.jpg ) // ^^^^^^^^^^^ ^^^^^^^^^^^ $domain = parse_url($url,PHP_URL_HOST); if ($domain=='youtube.com' || $domain=='www.youtube.com') { parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract video ID and get thumbnail if (!empty($params['v'])) return array('src'=>'https://img.youtube.com/vi/'.$params['v'].'/default.jpg', 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail'); } if ($domain=='youtu.be') // Youtube short links { $path = parse_url($url,PHP_URL_PATH); return array('src'=>'https://img.youtube.com/vi'.$path.'/default.jpg', 'href'=>$href,'width'=>'120','height'=>'90','alt'=>'YouTube thumbnail'); } if ($domain=='pix.toile-libre.org') // pix.toile-libre.org image hosting { parse_str(parse_url($url,PHP_URL_QUERY), $params); // Extract image filename. if (!empty($params) && !empty($params['img'])) return array('src'=>'http://pix.toile-libre.org/upload/thumb/'.urlencode($params['img']), 'href'=>$href,'style'=>'max-width:120px; max-height:150px','alt'=>'pix.toile-libre.org thumbnail'); } if ($domain=='imgur.com') { $path = parse_url($url,PHP_URL_PATH); if (startsWith($path,'/a/')) return array(); // Thumbnails for albums are not available. if (startsWith($path,'/r/')) return array('src'=>'https://i.imgur.com/'.basename($path).'s.jpg', 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail'); if (startsWith($path,'/gallery/')) return array('src'=>'https://i.imgur.com'.substr($path,8).'s.jpg', 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail'); if (substr_count($path,'/')==1) return array('src'=>'https://i.imgur.com/'.substr($path,1).'s.jpg', 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail'); } if ($domain=='i.imgur.com') { $pi = pathinfo(parse_url($url,PHP_URL_PATH)); if (!empty($pi['filename'])) return array('src'=>'https://i.imgur.com/'.$pi['filename'].'s.jpg', 'href'=>$href,'width'=>'90','height'=>'90','alt'=>'imgur.com thumbnail'); } if ($domain=='dailymotion.com' || $domain=='www.dailymotion.com') { if (strpos($url,'dailymotion.com/video/')!==false) { $thumburl=str_replace('dailymotion.com/video/','dailymotion.com/thumbnail/video/',$url); return array('src'=>$thumburl, 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'DailyMotion thumbnail'); } } if (endsWith($domain,'.imageshack.us')) { $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION)); if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif') { $thumburl = substr($url,0,strlen($url)-strlen($ext)).'th.'.$ext; return array('src'=>$thumburl, 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail'); } } // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL. // So we deport the thumbnail generation in order not to slow down page generation // (and we also cache the thumbnail) if (! $conf->get('thumbnail.enable_localcache')) return array(); // If local cache is disabled, no thumbnails for services which require the use a local cache. if ($domain=='flickr.com' || endsWith($domain,'.flickr.com') || $domain=='vimeo.com' || $domain=='ted.com' || endsWith($domain,'.ted.com') || $domain=='xkcd.com' || endsWith($domain,'.xkcd.com') ) { if ($domain=='vimeo.com') { // Make sure this vimeo URL points to a video (/xxx... where xxx is numeric) $path = parse_url($url,PHP_URL_PATH); if (!preg_match('!/\d+.+?!',$path)) return array(); // This is not a single video URL. } if ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com')) { // Make sure this URL points to a single comic (/xxx... where xxx is numeric) $path = parse_url($url,PHP_URL_PATH); if (!preg_match('!/\d+.+?!',$path)) return array(); } if ($domain=='ted.com' || endsWith($domain,'.ted.com')) { // Make sure this TED URL points to a video (/talks/...) $path = parse_url($url,PHP_URL_PATH); if ("/talks/" !== substr($path,0,7)) return array(); // This is not a single video URL. } $sign = hash_hmac('sha256', $url, $conf->get('credentials.salt')); // We use the salt to sign data (it's random, secret, and specific to each installation) return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url), 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail'); } // For all other, we try to make a thumbnail of links ending with .jpg/jpeg/png/gif // Technically speaking, we should download ALL links and check their Content-Type to see if they are images. // But using the extension will do. $ext=strtolower(pathinfo($url,PATHINFO_EXTENSION)); if ($ext=='jpg' || $ext=='jpeg' || $ext=='png' || $ext=='gif') { $sign = hash_hmac('sha256', $url, $conf->get('credentials.salt')); // We use the salt to sign data (it's random, secret, and specific to each installation) return array('src'=>index_url($_SERVER).'?do=genthumbnail&hmac='.$sign.'&url='.urlencode($url), 'href'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'thumbnail'); } return array(); // No thumbnail. } // Returns the HTML code to display a thumbnail for a link // with a link to the original URL. // Understands various services (youtube.com...) // Input: $url = URL for which the thumbnail must be found. // $href = if provided, this URL will be followed instead of $url // Returns '' if no thumbnail available. function thumbnail($url,$href=false) { // FIXME! global $conf; $t = computeThumbnail($conf, $url,$href); if (count($t)==0) return ''; // Empty array = no thumbnail for this URL. $html='<a href="'.escape($t['href']).'"><img src="'.escape($t['src']).'"'; if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"'; if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"'; if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"'; if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"'; $html.='></a>'; return $html; } // Returns the HTML code to display a thumbnail for a link // for the picture wall (using lazy image loading) // Understands various services (youtube.com...) // Input: $url = URL for which the thumbnail must be found. // $href = if provided, this URL will be followed instead of $url // Returns '' if no thumbnail available. function lazyThumbnail($conf, $url,$href=false) { // FIXME! global $conf; $t = computeThumbnail($conf, $url,$href); if (count($t)==0) return ''; // Empty array = no thumbnail for this URL. $html='<a href="'.escape($t['href']).'">'; // Lazy image $html.='<img class="b-lazy" src="#" data-src="'.escape($t['src']).'"'; if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"'; if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"'; if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"'; if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"'; $html.='>'; // No-JavaScript fallback. $html.='<noscript><img src="'.escape($t['src']).'"'; if (!empty($t['width'])) $html.=' width="'.escape($t['width']).'"'; if (!empty($t['height'])) $html.=' height="'.escape($t['height']).'"'; if (!empty($t['style'])) $html.=' style="'.escape($t['style']).'"'; if (!empty($t['alt'])) $html.=' alt="'.escape($t['alt']).'"'; $html.='></noscript></a>'; return $html; } /** * Installation * This function should NEVER be called if the file data/config.php exists. * * @param ConfigManager $conf Configuration Manager instance. * @param SessionManager $sessionManager SessionManager instance */ function install($conf, $sessionManager) { // On free.fr host, make sure the /sessions directory exists, otherwise login will not work. if (endsWith($_SERVER['HTTP_HOST'],'.free.fr') && !is_dir($_SERVER['DOCUMENT_ROOT'].'/sessions')) mkdir($_SERVER['DOCUMENT_ROOT'].'/sessions',0705); // This part makes sure sessions works correctly. // (Because on some hosts, session.save_path may not be set correctly, // or we may not have write access to it.) if (isset($_GET['test_session']) && ( !isset($_SESSION) || !isset($_SESSION['session_tested']) || $_SESSION['session_tested']!='Working')) { // Step 2: Check if data in session is correct. $msg = t( '<pre>Sessions do not seem to work correctly on your server.<br>'. 'Make sure the variable "session.save_path" is set correctly in your PHP config, '. 'and that you have write access to it.<br>'. 'It currently points to %s.<br>'. 'On some browsers, accessing your server via a hostname like \'localhost\' '. 'or any custom hostname without a dot causes cookie storage to fail. '. 'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>' ); $msg = sprintf($msg, session_save_path()); echo $msg; echo '<br><a href="?">'. t('Click to try again.') .'</a></pre>'; die; } if (!isset($_SESSION['session_tested'])) { // Step 1 : Try to store data in session and reload page. $_SESSION['session_tested'] = 'Working'; // Try to set a variable in session. header('Location: '.index_url($_SERVER).'?test_session'); // Redirect to check stored data. } if (isset($_GET['test_session'])) { // Step 3: Sessions are OK. Remove test parameter from URL. header('Location: '.index_url($_SERVER)); } if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) { $tz = 'UTC'; if (!empty($_POST['continent']) && !empty($_POST['city']) && isTimeZoneValid($_POST['continent'], $_POST['city']) ) { $tz = $_POST['continent'].'/'.$_POST['city']; } $conf->set('general.timezone', $tz); $login = $_POST['setlogin']; $conf->set('credentials.login', $login); $salt = sha1(uniqid('', true) .'_'. mt_rand()); $conf->set('credentials.salt', $salt); $conf->set('credentials.hash', sha1($_POST['setpassword'] . $login . $salt)); if (!empty($_POST['title'])) { $conf->set('general.title', escape($_POST['title'])); } else { $conf->set('general.title', 'Shared links on '.escape(index_url($_SERVER))); } $conf->set('translation.language', escape($_POST['language'])); $conf->set('updates.check_updates', !empty($_POST['updateCheck'])); $conf->set('api.enabled', !empty($_POST['enableApi'])); $conf->set( 'api.secret', generate_api_secret( $conf->get('credentials.login'), $conf->get('credentials.salt') ) ); try { // Everything is ok, let's create config file. $conf->write(isLoggedIn()); } catch(Exception $e) { error_log( 'ERROR while writing config file after installation.' . PHP_EOL . $e->getMessage() ); // TODO: do not handle exceptions/errors in JS. echo '<script>alert("'. $e->getMessage() .'");document.location=\'?\';</script>'; exit; } echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>'; exit; } $PAGE = new PageBuilder($conf, null, $sessionManager->generateToken()); list($continents, $cities) = generateTimeZoneData(timezone_identifiers_list(), date_default_timezone_get()); $PAGE->assign('continents', $continents); $PAGE->assign('cities', $cities); $PAGE->assign('languages', Languages::getAvailableLanguages()); $PAGE->renderPage('install'); exit; } /** * Because some f*cking services like flickr require an extra HTTP request to get the thumbnail URL, * I have deported the thumbnail URL code generation here, otherwise this would slow down page generation. * The following function takes the URL a link (e.g. a flickr page) and return the proper thumbnail. * This function is called by passing the URL: * http://mywebsite.com/shaarli/?do=genthumbnail&hmac=[HMAC]&url=[URL] * [URL] is the URL of the link (e.g. a flickr page) * [HMAC] is the signature for the [URL] (so that these URL cannot be forged). * The function below will fetch the image from the webservice and store it in the cache. * * @param ConfigManager $conf Configuration Manager instance, */ function genThumbnail($conf) { // Make sure the parameters in the URL were generated by us. $sign = hash_hmac('sha256', $_GET['url'], $conf->get('credentials.salt')); if ($sign!=$_GET['hmac']) die('Naughty boy!'); $cacheDir = $conf->get('resource.thumbnails_cache', 'cache'); // Let's see if we don't already have the image for this URL in the cache. $thumbname=hash('sha1',$_GET['url']).'.jpg'; if (is_file($cacheDir .'/'. $thumbname)) { // We have the thumbnail, just serve it: header('Content-Type: image/jpeg'); echo file_get_contents($cacheDir .'/'. $thumbname); return; } // We may also serve a blank image (if service did not respond) $blankname=hash('sha1',$_GET['url']).'.gif'; if (is_file($cacheDir .'/'. $blankname)) { header('Content-Type: image/gif'); echo file_get_contents($cacheDir .'/'. $blankname); return; } // Otherwise, generate the thumbnail. $url = $_GET['url']; $domain = parse_url($url,PHP_URL_HOST); if ($domain=='flickr.com' || endsWith($domain,'.flickr.com')) { // Crude replacement to handle new flickr domain policy (They prefer www. now) $url = str_replace('http://flickr.com/','http://www.flickr.com/',$url); // Is this a link to an image, or to a flickr page ? $imageurl=''; if (endsWith(parse_url($url, PHP_URL_PATH), '.jpg')) { // This is a direct link to an image. e.g. http://farm1.staticflickr.com/5/5921913_ac83ed27bd_o.jpg preg_match('!(http://farm\d+\.staticflickr\.com/\d+/\d+_\w+_)\w.jpg!',$url,$matches); if (!empty($matches[1])) $imageurl=$matches[1].'m.jpg'; } else // This is a flickr page (html) { // Get the flickr html page. list($headers, $content) = get_http_response($url, 20); if (strpos($headers[0], '200 OK') !== false) { // flickr now nicely provides the URL of the thumbnail in each flickr page. preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $content, $matches); if (!empty($matches[1])) $imageurl=$matches[1]; // In albums (and some other pages), the link rel="image_src" is not provided, // but flickr provides: // <meta property="og:image" content="http://farm4.staticflickr.com/3398/3239339068_25d13535ff_z.jpg" /> if ($imageurl=='') { preg_match('!<meta property=\"og:image\" content=\"(.+?)\"!', $content, $matches); if (!empty($matches[1])) $imageurl=$matches[1]; } } } if ($imageurl!='') { // Let's download the image. // Image is 240x120, so 10 seconds to download should be enough. list($headers, $content) = get_http_response($imageurl, 10); if (strpos($headers[0], '200 OK') !== false) { // Save image to cache. file_put_contents($cacheDir .'/'. $thumbname, $content); header('Content-Type: image/jpeg'); echo $content; return; } } } elseif ($domain=='vimeo.com' ) { // This is more complex: we have to perform a HTTP request, then parse the result. // Maybe we should deport this to JavaScript ? Example: http://stackoverflow.com/questions/1361149/get-img-thumbnails-from-vimeo/4285098#4285098 $vid = substr(parse_url($url,PHP_URL_PATH),1); list($headers, $content) = get_http_response('https://vimeo.com/api/v2/video/'.escape($vid).'.php', 5); if (strpos($headers[0], '200 OK') !== false) { $t = unserialize($content); $imageurl = $t[0]['thumbnail_medium']; // Then we download the image and serve it to our client. list($headers, $content) = get_http_response($imageurl, 10); if (strpos($headers[0], '200 OK') !== false) { // Save image to cache. file_put_contents($cacheDir .'/'. $thumbname, $content); header('Content-Type: image/jpeg'); echo $content; return; } } } elseif ($domain=='ted.com' || endsWith($domain,'.ted.com')) { // The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page // http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html // <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" /> list($headers, $content) = get_http_response($url, 5); if (strpos($headers[0], '200 OK') !== false) { // Extract the link to the thumbnail preg_match('!link rel="image_src" href="(http://images.ted.com/images/ted/.+_\d+x\d+\.jpg)"!', $content, $matches); if (!empty($matches[1])) { // Let's download the image. $imageurl=$matches[1]; // No control on image size, so wait long enough list($headers, $content) = get_http_response($imageurl, 20); if (strpos($headers[0], '200 OK') !== false) { $filepath = $cacheDir .'/'. $thumbname; file_put_contents($filepath, $content); // Save image to cache. if (resizeImage($filepath)) { header('Content-Type: image/jpeg'); echo file_get_contents($filepath); return; } } } } } elseif ($domain=='xkcd.com' || endsWith($domain,'.xkcd.com')) { // There is no thumbnail available for xkcd comics, so download the whole image and resize it. // http://xkcd.com/327/ // <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" /> list($headers, $content) = get_http_response($url, 5); if (strpos($headers[0], '200 OK') !== false) { // Extract the link to the thumbnail preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $content, $matches); if (!empty($matches[1])) { // Let's download the image. $imageurl=$matches[1]; // No control on image size, so wait long enough list($headers, $content) = get_http_response($imageurl, 20); if (strpos($headers[0], '200 OK') !== false) { $filepath = $cacheDir.'/'.$thumbname; // Save image to cache. file_put_contents($filepath, $content); if (resizeImage($filepath)) { header('Content-Type: image/jpeg'); echo file_get_contents($filepath); return; } } } } } else { // For all other domains, we try to download the image and make a thumbnail. // We allow 30 seconds max to download (and downloads are limited to 4 Mb) list($headers, $content) = get_http_response($url, 30); if (strpos($headers[0], '200 OK') !== false) { $filepath = $cacheDir .'/'.$thumbname; // Save image to cache. file_put_contents($filepath, $content); if (resizeImage($filepath)) { header('Content-Type: image/jpeg'); echo file_get_contents($filepath); return; } } } // Otherwise, return an empty image (8x8 transparent gif) $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7'); // Also put something in cache so that this URL is not requested twice. file_put_contents($cacheDir .'/'. $blankname, $blankgif); header('Content-Type: image/gif'); echo $blankgif; } // Make a thumbnail of the image (to width: 120 pixels) // Returns true if success, false otherwise. function resizeImage($filepath) { if (!function_exists('imagecreatefromjpeg')) return false; // GD not present: no thumbnail possible. // Trick: some stupid people rename GIF as JPEG... or else. // So we really try to open each image type whatever the extension is. $header=file_get_contents($filepath,false,NULL,0,256); // Read first 256 bytes and try to sniff file type. $im=false; $i=strpos($header,'GIF8'); if (($i!==false) && ($i==0)) $im = imagecreatefromgif($filepath); // Well this is crude, but it should be enough. $i=strpos($header,'PNG'); if (($i!==false) && ($i==1)) $im = imagecreatefrompng($filepath); $i=strpos($header,'JFIF'); if ($i!==false) $im = imagecreatefromjpeg($filepath); if (!$im) return false; // Unable to open image (corrupted or not an image) $w = imagesx($im); $h = imagesy($im); $ystart = 0; $yheight=$h; if ($h>$w) { $ystart= ($h/2)-($w/2); $yheight=$w/2; } $nw = 120; // Desired width $nh = min(floor(($h*$nw)/$w),120); // Compute new width/height, but maximum 120 pixels height. // Resize image: $im2 = imagecreatetruecolor($nw,$nh); imagecopyresampled($im2, $im, 0, 0, 0, $ystart, $nw, $nh, $w, $yheight); imageinterlace($im2,true); // For progressive JPEG. $tempname=$filepath.'_TEMP.jpg'; imagejpeg($im2, $tempname, 90); imagedestroy($im); imagedestroy($im2); unlink($filepath); rename($tempname,$filepath); // Overwrite original picture with thumbnail. return true; } if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=genthumbnail')) { genThumbnail($conf); exit; } // Thumbnail generation/cache does not need the link database. if (isset($_SERVER['QUERY_STRING']) && startsWith($_SERVER['QUERY_STRING'], 'do=dailyrss')) { showDailyRSS($conf); exit; } if (!isset($_SESSION['LINKS_PER_PAGE'])) { $_SESSION['LINKS_PER_PAGE'] = $conf->get('general.links_per_page', 20); } try { $history = new History($conf->get('resource.history')); } catch(Exception $e) { die($e->getMessage()); } $linkDb = new LinkDB( $conf->get('resource.datastore'), isLoggedIn(), $conf->get('privacy.hide_public_links'), $conf->get('redirector.url'), $conf->get('redirector.encode_url') ); $container = new \Slim\Container(); $container['conf'] = $conf; $container['plugins'] = $pluginManager; $container['history'] = $history; $app = new \Slim\App($container); // REST API routes $app->group('/api/v1', function() { $this->get('/info', '\Shaarli\Api\Controllers\Info:getInfo')->setName('getInfo'); $this->get('/links', '\Shaarli\Api\Controllers\Links:getLinks')->setName('getLinks'); $this->get('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:getLink')->setName('getLink'); $this->post('/links', '\Shaarli\Api\Controllers\Links:postLink')->setName('postLink'); $this->put('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:putLink')->setName('putLink'); $this->delete('/links/{id:[\d]+}', '\Shaarli\Api\Controllers\Links:deleteLink')->setName('deleteLink'); $this->get('/history', '\Shaarli\Api\Controllers\History:getHistory')->setName('getHistory'); })->add('\Shaarli\Api\ApiMiddleware'); $response = $app->run(true); // Hack to make Slim and Shaarli router work together: // If a Slim route isn't found and NOT API call, we call renderPage(). if ($response->getStatusCode() == 404 && strpos($_SERVER['REQUEST_URI'], '/api/v1') === false) { // We use UTF-8 for proper international characters handling. header('Content-Type: text/html; charset=utf-8'); renderPage($conf, $pluginManager, $linkDb, $history, $sessionManager); } else { $app->respond($response); }