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- <?php
- /**
- * Shaarli v0.6.2 - Shaare your links...
- *
- * The personal, minimalist, super-fast, no-database Delicious clone.
- *
- * 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 5.3.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');
- }
- /* -----------------------------------------------------------------------------
- * Hardcoded parameters
- * You should not touch any code below (or at your own risks!)
- * (These parameters can be overwritten by editing the file /data/config.php)
- * -----------------------------------------------------------------------------
- */
- /*
- * Shaarli directories & configuration files
- */
- // Data subdirectory
- $GLOBALS['config']['DATADIR'] = 'data';
- // Main configuration file
- $GLOBALS['config']['CONFIG_FILE'] = $GLOBALS['config']['DATADIR'].'/config.php';
- // Link datastore
- $GLOBALS['config']['DATASTORE'] = $GLOBALS['config']['DATADIR'].'/datastore.php';
- // Banned IPs
- $GLOBALS['config']['IPBANS_FILENAME'] = $GLOBALS['config']['DATADIR'].'/ipbans.php';
- // Access log
- $GLOBALS['config']['LOG_FILE'] = $GLOBALS['config']['DATADIR'].'/log.txt';
- // For updates check of Shaarli
- $GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt';
- // RainTPL cache directory (keep the trailing slash!)
- $GLOBALS['config']['RAINTPL_TMP'] = 'tmp/';
- // Raintpl template directory (keep the trailing slash!)
- $GLOBALS['config']['RAINTPL_TPL'] = 'tpl/';
- // Thumbnail cache directory
- $GLOBALS['config']['CACHEDIR'] = 'cache';
- // Atom & RSS feed cache directory
- $GLOBALS['config']['PAGECACHE'] = 'pagecache';
- /*
- * Global configuration
- */
- // Ban IP after this many failures
- $GLOBALS['config']['BAN_AFTER'] = 4;
- // Ban duration for IP address after login failures (in seconds)
- $GLOBALS['config']['BAN_DURATION'] = 1800;
- // Feed options
- // Enable RSS permalinks by default.
- // This corresponds to the default behavior of shaarli before this was added as an option.
- $GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = true;
- // If true, an extra "ATOM feed" button will be displayed in the toolbar
- $GLOBALS['config']['SHOW_ATOM'] = false;
- // Link display options
- $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = false;
- $GLOBALS['config']['HIDE_TIMESTAMPS'] = false;
- $GLOBALS['config']['LINKS_PER_PAGE'] = 20;
- // Open Shaarli (true): anyone can add/edit/delete links without having to login
- $GLOBALS['config']['OPEN_SHAARLI'] = false;
- // Thumbnails
- // Display thumbnails in links
- $GLOBALS['config']['ENABLE_THUMBNAILS'] = true;
- // Store thumbnails in a local cache
- $GLOBALS['config']['ENABLE_LOCALCACHE'] = true;
- // Update check frequency for Shaarli. 86400 seconds=24 hours
- $GLOBALS['config']['UPDATECHECK_BRANCH'] = 'stable';
- $GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400;
- /*
- * Plugin configuration
- *
- * Warning: order matters!
- *
- * These settings may be be overriden in:
- * - data/config.php
- * - each plugin's configuration file
- */
- //$GLOBALS['config']['ENABLED_PLUGINS'] = array(
- // 'qrcode', 'archiveorg', 'readityourself', 'demo_plugin', 'playvideos',
- // 'wallabag', 'markdown', 'addlink_toolbar',
- //);
- $GLOBALS['config']['ENABLED_PLUGINS'] = array('qrcode');
- //$GLOBALS['plugins']['WALLABAG_URL'] = 'https://demo.wallabag.org/';
- // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
- $GLOBALS['config']['PUBSUBHUB_URL'] = '';
- /*
- * PHP configuration
- */
- define('shaarli_version', '0.6.2');
- // http://server.com/x/shaarli --> /shaarli/
- define('WEB_PATH', substr($_SERVER["REQUEST_URI"], 0, 1+strrpos($_SERVER["REQUEST_URI"], '/', 0)));
- // High execution time in case of problematic imports/exports.
- ini_set('max_input_time','60');
- // Try to set max upload file size and read
- ini_set('memory_limit', '128M');
- ini_set('post_max_size', '16M');
- ini_set('upload_max_filesize', '16M');
- // See all error except warnings
- error_reporting(E_ALL^E_WARNING);
- // See all errors (for debugging only)
- //error_reporting(-1);
- /*
- * User configuration
- */
- if (is_file($GLOBALS['config']['CONFIG_FILE'])) {
- require_once $GLOBALS['config']['CONFIG_FILE'];
- }
- // Shaarli library
- require_once 'application/ApplicationUtils.php';
- require_once 'application/Cache.php';
- require_once 'application/CachedPage.php';
- require_once 'application/FileUtils.php';
- require_once 'application/HttpUtils.php';
- require_once 'application/LinkDB.php';
- require_once 'application/LinkFilter.php';
- require_once 'application/LinkUtils.php';
- require_once 'application/TimeZone.php';
- require_once 'application/Url.php';
- require_once 'application/Utils.php';
- require_once 'application/Config.php';
- require_once 'application/PluginManager.php';
- require_once 'application/Router.php';
- // Ensure the PHP version is supported
- try {
- ApplicationUtils::checkPHPVersion('5.3', PHP_VERSION);
- } catch(Exception $exc) {
- header('Content-Type: text/plain; charset=utf-8');
- echo $exc->getMessage();
- exit;
- }
- // 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']) && !is_session_id_valid($_COOKIE['shaarli'])) {
- session_regenerate_id(true);
- $_COOKIE['shaarli'] = session_id();
- }
- include "inc/rain.tpl.class.php"; //include Rain TPL
- raintpl::$tpl_dir = $GLOBALS['config']['RAINTPL_TPL']; // template directory
- raintpl::$cache_dir = $GLOBALS['config']['RAINTPL_TMP']; // cache directory
- $pluginManager = PluginManager::getInstance();
- $pluginManager->load($GLOBALS['config']['ENABLED_PLUGINS']);
- ob_start(); // Output buffering for the page cache.
- // In case stupid admin has left magic_quotes enabled in php.ini:
- if (get_magic_quotes_gpc())
- {
- function stripslashes_deep($value) { $value = is_array($value) ? array_map('stripslashes_deep', $value) : stripslashes($value); return $value; }
- $_POST = array_map('stripslashes_deep', $_POST);
- $_GET = array_map('stripslashes_deep', $_GET);
- $_COOKIE = array_map('stripslashes_deep', $_COOKIE);
- }
- // Prevent caching on client side or proxy: (yes, it's ugly)
- header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
- header("Cache-Control: no-store, no-cache, must-revalidate");
- header("Cache-Control: post-check=0, pre-check=0", false);
- header("Pragma: no-cache");
- // Handling of old config file which do not have the new parameters.
- if (empty($GLOBALS['title'])) $GLOBALS['title']='Shared links on '.escape(index_url($_SERVER));
- if (empty($GLOBALS['timezone'])) $GLOBALS['timezone']=date_default_timezone_get();
- if (empty($GLOBALS['redirector'])) $GLOBALS['redirector']='';
- if (empty($GLOBALS['disablesessionprotection'])) $GLOBALS['disablesessionprotection']=false;
- if (empty($GLOBALS['privateLinkByDefault'])) $GLOBALS['privateLinkByDefault']=false;
- if (empty($GLOBALS['titleLink'])) $GLOBALS['titleLink']='?';
- // I really need to rewrite Shaarli with a proper configuation manager.
- if (! is_file($GLOBALS['config']['CONFIG_FILE'])) {
- // Ensure Shaarli has proper access to its resources
- $errors = ApplicationUtils::checkResourcePermissions($GLOBALS['config']);
- if ($errors != array()) {
- $message = '<p>Insufficient permissions:</p><ul>';
- foreach ($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();
- }
- $GLOBALS['title'] = !empty($GLOBALS['title']) ? escape($GLOBALS['title']) : '';
- $GLOBALS['titleLink'] = !empty($GLOBALS['titleLink']) ? escape($GLOBALS['titleLink']) : '';
- $GLOBALS['redirector'] = !empty($GLOBALS['redirector']) ? escape($GLOBALS['redirector']) : '';
- // a token depending of deployment salt, user password, and the current ip
- define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER["REMOTE_ADDR"].$GLOBALS['salt']));
- autoLocale(); // Sniff browser language and set date format accordingly.
- header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
- //==================================================================================================
- // Checking session state (i.e. is the user still logged in)
- //==================================================================================================
- function setup_login_state() {
- if ($GLOBALS['config']['OPEN_SHAARLI']) {
- return true;
- }
- $userIsLoggedIn = false; // By default, we do not consider the user as logged in;
- $loginFailure = false; // If set to true, every attempt to authenticate the user will fail. This indicates that an important condition isn't met.
- if (!isset($GLOBALS['login'])) {
- $userIsLoggedIn = false; // Shaarli is not configured yet.
- $loginFailure = true;
- }
- if (isset($_COOKIE['shaarli_staySignedIn']) &&
- $_COOKIE['shaarli_staySignedIn']===STAY_SIGNED_IN_TOKEN &&
- !$loginFailure)
- {
- fillSessionInfo();
- $userIsLoggedIn = true;
- }
- // If session does not exist on server side, or IP address has changed, or session has expired, logout.
- if (empty($_SESSION['uid']) ||
- ($GLOBALS['disablesessionprotection']==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();
- // ------------------------------------------------------------------------------------------
- // Sniff browser language to display dates in the right format automatically.
- // (Note that is may not work on your server if the corresponding local is not installed.)
- function autoLocale()
- {
- $attempts = array('en_US'); // Default if browser does not send HTTP_ACCEPT_LANGUAGE
- if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) // e.g. "fr,fr-fr;q=0.8,en;q=0.5,en-us;q=0.3"
- { // (It's a bit crude, but it works very well. Preferred language is always presented first.)
- if (preg_match('/([a-z]{2})-?([a-z]{2})?/i',$_SERVER['HTTP_ACCEPT_LANGUAGE'],$matches)) {
- $loc = $matches[1] . (!empty($matches[2]) ? '_' . strtoupper($matches[2]) : '');
- $attempts = array($loc.'.UTF-8', $loc, str_replace('_', '-', $loc).'.UTF-8', str_replace('_', '-', $loc),
- $loc . '_' . strtoupper($loc).'.UTF-8', $loc . '_' . strtoupper($loc),
- $loc . '_' . $loc.'.UTF-8', $loc . '_' . $loc, $loc . '-' . strtoupper($loc).'.UTF-8',
- $loc . '-' . strtoupper($loc), $loc . '-' . $loc.'.UTF-8', $loc . '-' . $loc);
- }
- }
- setlocale(LC_TIME, $attempts); // LC_TIME = Set local for date/time format only.
- }
- // ------------------------------------------------------------------------------------------
- // PubSubHubbub protocol support (if enabled) [UNTESTED]
- // (Source: http://aldarone.fr/les-flux-rss-shaarli-et-pubsubhubbub/ )
- if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) include './publisher.php';
- function pubsubhub()
- {
- if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
- {
- $p = new Publisher($GLOBALS['config']['PUBSUBHUB_URL']);
- $topic_url = array (
- index_url($_SERVER).'?do=atom',
- index_url($_SERVER).'?do=rss'
- );
- $p->publish_update($topic_url);
- }
- }
- // ------------------------------------------------------------------------------------------
- // 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;
- }
- function fillSessionInfo() {
- $_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.
- $_SESSION['username']=$GLOBALS['login'];
- $_SESSION['expires_on']=time()+INACTIVITY_TIMEOUT; // Set session expiration.
- }
- // Check that user/password is correct.
- function check_auth($login,$password)
- {
- $hash = sha1($password.$login.$GLOBALS['salt']);
- if ($login==$GLOBALS['login'] && $hash==$GLOBALS['hash'])
- { // Login/password is correct.
- fillSessionInfo();
- logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login successful');
- return True;
- }
- logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Login failed for user '.$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']);
- }
- 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($GLOBALS['config']['IPBANS_FILENAME'])) file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export(array('FAILURES'=>array(),'BANS'=>array()),true).";\n?>");
- include $GLOBALS['config']['IPBANS_FILENAME'];
- // Signal a failed login. Will ban the IP if too many failures:
- function ban_loginFailed()
- {
- $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
- if (!isset($gb['FAILURES'][$ip])) $gb['FAILURES'][$ip]=0;
- $gb['FAILURES'][$ip]++;
- if ($gb['FAILURES'][$ip]>($GLOBALS['config']['BAN_AFTER']-1))
- {
- $gb['BANS'][$ip]=time()+$GLOBALS['config']['BAN_DURATION'];
- logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'IP address banned from login');
- }
- $GLOBALS['IPBANS'] = $gb;
- file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
- }
- // Signals a successful login. Resets failed login counter.
- function ban_loginOk()
- {
- $ip=$_SERVER["REMOTE_ADDR"]; $gb=$GLOBALS['IPBANS'];
- unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
- $GLOBALS['IPBANS'] = $gb;
- file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?php\n\$GLOBALS['IPBANS']=".var_export($gb,true).";\n?>");
- }
- // Checks if the user CAN login. If 'true', the user can try to login.
- function ban_canLogin()
- {
- $ip=$_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($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], 'Ban lifted.');
- unset($gb['FAILURES'][$ip]); unset($gb['BANS'][$ip]);
- file_put_contents($GLOBALS['config']['IPBANS_FILENAME'], "<?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()) die('I said: NO. You are banned for the moment. Go away.');
- if (isset($_POST['password']) && tokenOk($_POST['token']) && (check_auth($_POST['login'], $_POST['password'])))
- { // Login/password is OK.
- ban_loginOk();
- // If user wants to keep the session cookie even after the browser closes:
- if (!empty($_POST['longlastingsession']))
- {
- setcookie('shaarli_staySignedIn', STAY_SIGNED_IN_TOKEN, time()+31536000, WEB_PATH);
- $_SESSION['longlastingsession']=31536000; // (31536000 seconds = 1 year)
- $_SESSION['expires_on']=time()+$_SESSION['longlastingsession']; // 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') 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($_POST['returnurl'], 'do=login') === false) {
- header('Location: '. escape($_POST['returnurl']));
- exit;
- }
- }
- header('Location: ?'); exit;
- }
- else
- {
- ban_loginFailed();
- $redir = '';
- if (isset($_GET['post'])) {
- $redir = '?post=' . urlencode($_GET['post']);
- foreach (array('description', 'source', 'title') as $param) {
- if (!empty($_GET[$param])) {
- $redir .= '&' . $param . '=' . urlencode($_GET[$param]);
- }
- }
- }
- echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
- exit;
- }
- }
- // ------------------------------------------------------------------------------------------
- // Misc utility functions:
- // Convert post_max_size/upload_max_filesize (e.g. '16M') parameters to bytes.
- function return_bytes($val)
- {
- $val = trim($val); $last=strtolower($val[strlen($val)-1]);
- switch($last)
- {
- case 'g': $val *= 1024;
- case 'm': $val *= 1024;
- case 'k': $val *= 1024;
- }
- return $val;
- }
- // Try to determine max file size for uploads (POST).
- // Returns an integer (in bytes)
- function getMaxFileSize()
- {
- $size1 = return_bytes(ini_get('post_max_size'));
- $size2 = return_bytes(ini_get('upload_max_filesize'));
- // Return the smaller of two:
- $maxsize = min($size1,$size2);
- // FIXME: Then convert back to readable notations ? (e.g. 2M instead of 2000000)
- return $maxsize;
- }
- /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
- (used to build the ADD_DATE attribute in Netscape-bookmarks file)
- PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
- function linkdate2timestamp($linkdate)
- {
- if(strcmp($linkdate, '_000000') !== 0 || !$linkdate){
- $Y=$M=$D=$h=$m=$s=0;
- $r = sscanf($linkdate,'%4d%2d%2d_%2d%2d%2d',$Y,$M,$D,$h,$m,$s);
- return mktime($h,$m,$s,$M,$D,$Y);
- }
- return time();
- }
- /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
- (used to build the pubDate attribute in RSS feed.) */
- function linkdate2rfc822($linkdate)
- {
- return date('r',linkdate2timestamp($linkdate)); // 'r' is for RFC822 date format.
- }
- /* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a ISO 8601 date.
- (used to build the updated tags in ATOM feed.) */
- function linkdate2iso8601($linkdate)
- {
- return date('c',linkdate2timestamp($linkdate)); // 'c' is for ISO 8601 date format.
- }
- // ------------------------------------------------------------------------------------------
- // 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.
- // Returns a token.
- function getToken()
- {
- $rnd = sha1(uniqid('',true).'_'.mt_rand().$GLOBALS['salt']); // We generate a random string.
- $_SESSION['tokens'][$rnd]=1; // Store it on the server side.
- return $rnd;
- }
- // Tells if a token is OK. Using this function will destroy the token.
- // true=token is OK.
- function tokenOk($token)
- {
- if (isset($_SESSION['tokens'][$token]))
- {
- unset($_SESSION['tokens'][$token]); // Token is used: destroy it.
- return true; // Token is OK.
- }
- return false; // Wrong token, or already used.
- }
- // ------------------------------------------------------------------------------------------
- /* This class is in charge of building the final page.
- (This is basically a wrapper around RainTPL which pre-fills some fields.)
- p = new pageBuilder;
- p.assign('myfield','myvalue');
- p.renderPage('mytemplate');
- */
- class pageBuilder
- {
- private $tpl; // RainTPL template
- function __construct()
- {
- $this->tpl = false;
- }
- /**
- * Initialize all default tpl tags.
- */
- private function initialize()
- {
- $this->tpl = new RainTPL;
- try {
- $version = ApplicationUtils::checkUpdate(
- shaarli_version,
- $GLOBALS['config']['UPDATECHECK_FILENAME'],
- $GLOBALS['config']['UPDATECHECK_INTERVAL'],
- $GLOBALS['config']['ENABLE_UPDATECHECK'],
- isLoggedIn(),
- $GLOBALS['config']['UPDATECHECK_BRANCH']
- );
- $this->tpl->assign('newVersion', escape($version));
- $this->tpl->assign('versionError', '');
- } catch (Exception $exc) {
- logm($GLOBALS['config']['LOG_FILE'], $_SERVER['REMOTE_ADDR'], $exc->getMessage());
- $this->tpl->assign('newVersion', '');
- $this->tpl->assign('versionError', escape($exc->getMessage()));
- }
- $this->tpl->assign('feedurl', escape(index_url($_SERVER)));
- $searchcrits = ''; // Search criteria
- if (!empty($_GET['searchtags'])) {
- $searchcrits .= '&searchtags=' . urlencode($_GET['searchtags']);
- }
- elseif (!empty($_GET['searchterm'])) {
- $searchcrits .= '&searchterm=' . urlencode($_GET['searchterm']);
- }
- $this->tpl->assign('searchcrits', $searchcrits);
- $this->tpl->assign('source', index_url($_SERVER));
- $this->tpl->assign('version', shaarli_version);
- $this->tpl->assign('scripturl', index_url($_SERVER));
- $this->tpl->assign('pagetitle', 'Shaarli');
- $this->tpl->assign('privateonly', !empty($_SESSION['privateonly'])); // Show only private links?
- if (!empty($GLOBALS['title'])) {
- $this->tpl->assign('pagetitle', $GLOBALS['title']);
- }
- if (!empty($GLOBALS['titleLink'])) {
- $this->tpl->assign('titleLink', $GLOBALS['titleLink']);
- }
- if (!empty($GLOBALS['pagetitle'])) {
- $this->tpl->assign('pagetitle', $GLOBALS['pagetitle']);
- }
- $this->tpl->assign('shaarlititle', empty($GLOBALS['title']) ? 'Shaarli': $GLOBALS['title']);
- if (!empty($GLOBALS['plugin_errors'])) {
- $this->tpl->assign('plugin_errors', $GLOBALS['plugin_errors']);
- }
- }
- // The following assign() method is basically the same as RainTPL (except that it's lazy)
- public function assign($what,$where)
- {
- if ($this->tpl===false) $this->initialize(); // Lazy initialization
- $this->tpl->assign($what,$where);
- }
- // Render a specific page (using a template).
- // e.g. pb.renderPage('picwall')
- public function renderPage($page)
- {
- if ($this->tpl===false) $this->initialize(); // Lazy initialization
- $this->tpl->draw($page);
- }
- /**
- * Render a 404 page (uses the template : tpl/404.tpl)
- *
- * usage : $PAGE->render404('The link was deleted')
- * @param string $message A messate to display what is not found
- */
- public function render404($message='The page you are trying to reach does not exist or has been deleted.') {
- header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
- $this->tpl->assign('error_message', $message);
- $this->renderPage('404');
- }
- }
- // ------------------------------------------------------------------------------------------
- // Output the last N links in RSS 2.0 format.
- function showRSS()
- {
- header('Content-Type: application/rss+xml; charset=utf-8');
- // $usepermalink : If true, use permalink instead of final link.
- // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=rss&permalinks
- // Also enabled through a config option
- $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
- // Cache system
- $query = $_SERVER["QUERY_STRING"];
- $cache = new CachedPage(
- $GLOBALS['config']['PAGECACHE'],
- page_url($_SERVER),
- startsWith($query,'do=rss') && !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:
- $LINKSDB = new LinkDB(
- $GLOBALS['config']['DATASTORE'],
- isLoggedIn(),
- $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
- $GLOBALS['redirector']
- );
- // Read links from database (and filter private links if user it not logged in).
- // Optionally filter the results:
- if (!empty($_GET['searchterm'])) {
- $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
- }
- elseif (!empty($_GET['searchtags'])) {
- $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
- }
- else {
- $linksToDisplay = $LINKSDB;
- }
- $nblinksToDisplay = 50; // Number of links to display.
- // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
- if (!empty($_GET['nb'])) {
- $nblinksToDisplay = $_GET['nb'] == 'all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
- }
- $pageaddr = escape(index_url($_SERVER));
- echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
- echo '<channel><title>'.$GLOBALS['title'].'</title><link>'.$pageaddr.'</link>';
- echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
- if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
- {
- echo '<!-- PubSubHubbub Discovery -->';
- echo '<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
- echo '<link rel="self" href="'.$pageaddr.'?do=rss" xmlns="http://www.w3.org/2005/Atom" />';
- echo '<!-- End Of PubSubHubbub Discovery -->';
- }
- $i=0;
- $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
- while ($i<$nblinksToDisplay && $i<count($keys))
- {
- $link = $linksToDisplay[$keys[$i]];
- $guid = $pageaddr.'?'.smallHash($link['linkdate']);
- $rfc822date = linkdate2rfc822($link['linkdate']);
- $absurl = $link['url'];
- if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
- if ($usepermalinks===true)
- echo '<item><title>'.$link['title'].'</title><guid isPermaLink="true">'.$guid.'</guid><link>'.$guid.'</link>';
- else
- echo '<item><title>'.$link['title'].'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
- if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) echo '<pubDate>'.escape($rfc822date)."</pubDate>\n";
- if ($link['tags']!='') // Adding tags to each RSS entry (as mentioned in RSS specification)
- {
- foreach(explode(' ',$link['tags']) as $tag) { echo '<category domain="'.$pageaddr.'">'.$tag.'</category>'."\n"; }
- }
- // Add permalink in description
- $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
- // If user wants permalinks first, put the final link in description
- if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
- if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
- echo '<description><![CDATA['.
- format_description($link['description'], $GLOBALS['redirector']) .
- $descriptionlink . ']]></description>' . "\n</item>\n";
- $i++;
- }
- echo '</channel></rss><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
- $cache->cache(ob_get_contents());
- ob_end_flush();
- exit;
- }
- // ------------------------------------------------------------------------------------------
- // Output the last N links in ATOM format.
- function showATOM()
- {
- header('Content-Type: application/atom+xml; charset=utf-8');
- // $usepermalink : If true, use permalink instead of final link.
- // User just has to add 'permalink' in URL parameters. e.g. http://mysite.com/shaarli/?do=atom&permalinks
- $usepermalinks = isset($_GET['permalinks']) || !$GLOBALS['config']['ENABLE_RSS_PERMALINKS'];
- // Cache system
- $query = $_SERVER["QUERY_STRING"];
- $cache = new CachedPage(
- $GLOBALS['config']['PAGECACHE'],
- page_url($_SERVER),
- startsWith($query,'do=atom') && !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(
- $GLOBALS['config']['DATASTORE'],
- isLoggedIn(),
- $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
- $GLOBALS['redirector']
- );
- // Optionally filter the results:
- if (!empty($_GET['searchterm'])) {
- $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
- }
- else if (!empty($_GET['searchtags'])) {
- $linksToDisplay = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
- }
- else {
- $linksToDisplay = $LINKSDB;
- }
- $nblinksToDisplay = 50; // Number of links to display.
- // In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
- if (!empty($_GET['nb'])) {
- $nblinksToDisplay = $_GET['nb']=='all' ? count($linksToDisplay) : max(intval($_GET['nb']), 1);
- }
- $pageaddr=escape(index_url($_SERVER));
- $latestDate = '';
- $entries='';
- $i=0;
- $keys=array(); foreach($linksToDisplay as $key=>$value) { $keys[]=$key; } // No, I can't use array_keys().
- while ($i<$nblinksToDisplay && $i<count($keys))
- {
- $link = $linksToDisplay[$keys[$i]];
- $guid = $pageaddr.'?'.smallHash($link['linkdate']);
- $iso8601date = linkdate2iso8601($link['linkdate']);
- $latestDate = max($latestDate,$iso8601date);
- $absurl = $link['url'];
- if (startsWith($absurl,'?')) $absurl=$pageaddr.$absurl; // make permalink URL absolute
- $entries.='<entry><title>'.$link['title'].'</title>';
- if ($usepermalinks===true)
- $entries.='<link href="'.$guid.'" /><id>'.$guid.'</id>';
- else
- $entries.='<link href="'.$absurl.'" /><id>'.$guid.'</id>';
- if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $entries.='<updated>'.escape($iso8601date).'</updated>';
- // Add permalink in description
- $descriptionlink = '(<a href="'.$guid.'">Permalink</a>)';
- // If user wants permalinks first, put the final link in description
- if ($usepermalinks===true) $descriptionlink = '(<a href="'.$absurl.'">Link</a>)';
- if (strlen($link['description'])>0) $descriptionlink = '<br>'.$descriptionlink;
- $entries .= '<content type="html"><![CDATA['.
- format_description($link['description'], $GLOBALS['redirector']) .
- $descriptionlink . "]]></content>\n";
- if ($link['tags']!='') // Adding tags to each ATOM entry (as mentioned in ATOM specification)
- {
- foreach(explode(' ',$link['tags']) as $tag)
- { $entries.='<category scheme="'.$pageaddr.'" term="'.$tag.'" />'."\n"; }
- }
- $entries.="</entry>\n";
- $i++;
- }
- $feed='<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
- $feed.='<title>'.$GLOBALS['title'].'</title>';
- if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) $feed.='<updated>'.escape($latestDate).'</updated>';
- $feed.='<link rel="self" href="'.escape(server_url($_SERVER).$_SERVER["REQUEST_URI"]).'" />';
- if (!empty($GLOBALS['config']['PUBSUBHUB_URL']))
- {
- $feed.='<!-- PubSubHubbub Discovery -->';
- $feed.='<link rel="hub" href="'.escape($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
- $feed.='<!-- End Of PubSubHubbub Discovery -->';
- }
- $feed.='<author><name>'.$pageaddr.'</name><uri>'.$pageaddr.'</uri></author>';
- $feed.='<id>'.$pageaddr.'</id>'."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do.
- $feed.=$entries;
- $feed.='</feed><!-- Cached version of '.escape(page_url($_SERVER)).' -->';
- echo $feed;
- $cache->cache(ob_get_contents());
- ob_end_flush();
- exit;
- }
- // ------------------------------------------------------------------------------------------
- // 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.
- function showDailyRSS() {
- // Cache system
- $query = $_SERVER["QUERY_STRING"];
- $cache = new CachedPage(
- $GLOBALS['config']['PAGECACHE'],
- page_url($_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(
- $GLOBALS['config']['DATASTORE'],
- isLoggedIn(),
- $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
- $GLOBALS['redirector']
- );
- /* Some Shaarlies may have very few links, so we need to look
- back in time (rsort()) until we have enough days ($nb_of_days).
- */
- $linkdates = array();
- foreach ($LINKSDB as $linkdate => $value) {
- $linkdates[] = $linkdate;
- }
- rsort($linkdates);
- $nb_of_days = 7; // We take 7 days.
- $today = Date('Ymd');
- $days = array();
- foreach ($linkdates as $linkdate) {
- $day = substr($linkdate, 0, 8); // Extract day (without time)
- if (strcmp($day,$today) < 0) {
- if (empty($days[$day])) {
- $days[$day] = array();
- }
- $days[$day][] = $linkdate;
- }
- if (count($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 - '. $GLOBALS['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 => $linkdates) {
- $daydate = linkdate2timestamp($day.'_000000'); // Full text date
- $rfc822date = linkdate2rfc822($day.'_000000');
- $absurl = escape(index_url($_SERVER).'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
- // Build the HTML body of this RSS entry.
- $html = '';
- $href = '';
- $links = array();
- // We pre-format some fields for proper output.
- foreach ($linkdates as $linkdate) {
- $l = $LINKSDB[$linkdate];
- $l['formatedDescription'] = format_description($l['description'], $GLOBALS['redirector']);
- $l['thumbnail'] = thumbnail($l['url']);
- $l['timestamp'] = linkdate2timestamp($l['linkdate']);
- if (startsWith($l['url'], '?')) {
- $l['url'] = index_url($_SERVER) . $l['url']; // make permalink URL absolute
- }
- $links[$linkdate] = $l;
- }
- // Then build the HTML for this day:
- $tpl = new RainTPL;
- $tpl->assign('title', $GLOBALS['title']);
- $tpl->assign('daydate', $daydate);
- $tpl->assign('absurl', $absurl);
- $tpl->assign('links', $links);
- $tpl->assign('rfc822date', escape($rfc822date));
- $html = $tpl->draw('dailyrss', $return_string=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 $pageBuilder Template engine wrapper.
- */
- function showDaily($pageBuilder)
- {
- $LINKSDB = new LinkDB(
- $GLOBALS['config']['DATASTORE'],
- isLoggedIn(),
- $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
- $GLOBALS['redirector']
- );
- $day=Date('Ymd',strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
- if (isset($_GET['day'])) $day=$_GET['day'];
- $days = $LINKSDB->days();
- $i = array_search($day,$days);
- if ($i===false) { $i=count($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 = $LINKSDB->filter(LinkFilter::$FILTER_DAY, $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'], $GLOBALS['redirector']);
- $linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
- $linksToDisplay[$key]['timestamp'] = linkdate2timestamp($link['linkdate']);
- }
- /* 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;
- }
- $data = array(
- 'linksToDisplay' => $linksToDisplay,
- 'linkcount' => count($LINKSDB),
- 'cols' => $columns,
- 'day' => linkdate2timestamp($day.'_000000'),
- 'previousday' => $previousday,
- 'nextday' => $nextday,
- );
- $pluginManager = PluginManager::getInstance();
- $pluginManager->executeHooks('render_daily', $data, array('loggedin' => isLoggedIn()));
- foreach ($data as $key => $value) {
- $pageBuilder->assign($key, $value);
- }
- $pageBuilder->renderPage('daily');
- exit;
- }
- // Renders the linklist
- function showLinkList($PAGE, $LINKSDB) {
- buildLinkList($PAGE,$LINKSDB); // Compute list of links to display
- $PAGE->renderPage('linklist');
- }
- // ------------------------------------------------------------------------------------------
- // Render HTML page (according to URL parameters and user rights)
- function renderPage()
- {
- $LINKSDB = new LinkDB(
- $GLOBALS['config']['DATASTORE'],
- isLoggedIn(),
- $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
- $GLOBALS['redirector']
- );
- $PAGE = new pageBuilder;
- // Determine which page will be rendered.
- $query = (isset($_SERVER['QUERY_STRING'])) ? $_SERVER['QUERY_STRING'] : '';
- $targetPage = Router::findPage($query, $_GET, isLoggedIn());
- // Call plugin hooks for header, footer and includes, specifying which page will be rendered.
- // Then assign generated data to RainTPL.
- $common_hooks = array(
- 'header',
- 'footer',
- 'includes',
- );
- $pluginManager = PluginManager::getInstance();
- foreach($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::$PAGE_LOGIN)
- {
- if ($GLOBALS['config']['OPEN_SHAARLI']) { header('Location: ?'); exit; } // No need to login for open Shaarli
- $token=''; if (ban_canLogin()) $token=getToken(); // Do not waste token generation if not useful.
- $PAGE->assign('token',$token);
- $PAGE->assign('returnurl',(isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']):''));
- $PAGE->renderPage('loginform');
- exit;
- }
- // -------- User wants to logout.
- if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=logout'))
- {
- invalidateCaches($GLOBALS['config']['PAGECACHE']);
- logout();
- header('Location: ?');
- exit;
- }
- // -------- Picture wall
- if ($targetPage == Router::$PAGE_PICWALL)
- {
- // Optionally filter the results:
- if (!empty($_GET['searchterm'])) {
- $links = $LINKSDB->filter(LinkFilter::$FILTER_TEXT, $_GET['searchterm']);
- }
- elseif (! empty($_GET['searchtags'])) {
- $links = $LINKSDB->filter(LinkFilter::$FILTER_TAG, trim($_GET['searchtags']));
- }
- else {
- $links = $LINKSDB;
- }
- $linksToDisplay = array();
- // Get only links which have a thumbnail.
- foreach($links as $link)
- {
- $permalink='?'.escape(smallhash($link['linkdate']));
- $thumb=lazyThumbnail($link['url'],$permalink);
- if ($thumb!='') // Only output links which have a thumbnail.
- {
- $link['thumbnail']=$thumb; // Thumbnail HTML code.
- $linksToDisplay[]=$link; // Add to array.
- }
- }
- $data = array(
- 'linkcount' => count($LINKSDB),
- '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)
- {
- $tags= $LINKSDB->allTags();
- // We sort tags alphabetically, then choose a font size according to count.
- // First, find max value.
- $maxcount=0; foreach($tags as $key=>$value) $maxcount=max($maxcount,$value);
- ksort($tags);
- $tagList=array();
- foreach($tags as $key=>$value)
- // Tag font size scaling: default 15 and 30 logarithm bases affect scaling, 22 and 6 are arbitrary font sizes for max and min sizes.
- {
- $tagList[$key] = array('count'=>$value,'size'=>log($value, 15) / log($maxcount, 30) * (22-6) + 6);
- }
- $data = array(
- 'linkcount' => count($LINKSDB),
- 'tags' => $tagList,
- );
- $pluginManager->executeHooks('render_tagcloud', $data, array('loggedin' => isLoggedIn()));
- foreach ($data as $key => $value) {
- $PAGE->assign($key, $value);
- }
- $PAGE->renderPage('tagcloud');
- exit;
- }
- // Daily page.
- if ($targetPage == Router::$PAGE_DAILY) {
- showDaily($PAGE);
- }
- // Display openseach 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']));
- }
- header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('linksperpage')));
- exit;
- }
- // -------- User wants to see only private links (toggle)
- if (isset($_GET['privateonly'])) {
- if (empty($_SESSION['privateonly'])) {
- $_SESSION['privateonly'] = 1; // See only private links
- } else {
- unset($_SESSION['privateonly']); // See all links
- }
- header('Location: '. generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('privateonly')));
- exit;
- }
- // -------- Handle other actions allowed for non-logged in users:
- if (!isLoggedIn())
- {
- // User tries to post new link but is not logged in:
- // Show login screen, then redirect to ?post=...
- if (isset($_GET['post']))
- {
- header('Location: ?do=login&post='.urlencode($_GET['post']).(!empty($_GET['title'])?'&title='.urlencode($_GET['title']):'').(!empty($_GET['description'])?'&description='.urlencode($_GET['description']):'').(!empty($_GET['source'])?'&source='.urlencode($_GET['source']):'')); // Redirect to login page, then back to post link.
- exit;
- }
- // Same case as above except that user tried to access ?do=addlink without being logged in
- // Note: passing empty parameters makes Shaarli generate default URLs and descriptions.
- if (isset($_GET['do']) && $_GET['do'] === 'addlink') {
- header('Location: ?do=login&post=');
- exit;
- }
- showLinkList($PAGE, $LINKSDB);
- if (isset($_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)
- {
- $data = array(
- 'linkcount' => count($LINKSDB),
- 'pageabsaddr' => index_url($_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::$PAGE_CHANGEPASSWORD)
- {
- if ($GLOBALS['config']['OPEN_SHAARLI']) die('You are not supposed to change a password on an Open Shaarli.');
- if (!empty($_POST['setpassword']) && !empty($_POST['oldpassword']))
- {
- if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
- // Make sure old password is correct.
- $oldhash = sha1($_POST['oldpassword'].$GLOBALS['login'].$GLOBALS['salt']);
- if ($oldhash!=$GLOBALS['hash']) { echo '<script>alert("The old password is not correct.");document.location=\'?do=changepasswd\';</script>'; exit; }
- // Save new password
- $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
- $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
- try {
- writeConfig($GLOBALS, 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("Your password has been changed.");document.location=\'?do=tools\';</script>';
- exit;
- }
- else // show the change password form.
- {
- $PAGE->assign('linkcount',count($LINKSDB));
- $PAGE->assign('token',getToken());
- $PAGE->renderPage('changepassword');
- exit;
- }
- }
- // -------- User wants to change configuration
- if ($targetPage == Router::$PAGE_CONFIGURE)
- {
- if (!empty($_POST['title']) )
- {
- if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
- $tz = 'UTC';
- if (!empty($_POST['continent']) && !empty($_POST['city']))
- if (isTimeZoneValid($_POST['continent'],$_POST['city']))
- $tz = $_POST['continent'].'/'.$_POST['city'];
- $GLOBALS['timezone'] = $tz;
- $GLOBALS['title']=$_POST['title'];
- $GLOBALS['titleLink']=$_POST['titleLink'];
- $GLOBALS['redirector']=$_POST['redirector'];
- $GLOBALS['disablesessionprotection']=!empty($_POST['disablesessionprotection']);
- $GLOBALS['privateLinkByDefault']=!empty($_POST['privateLinkByDefault']);
- $GLOBALS['config']['ENABLE_RSS_PERMALINKS']= !empty($_POST['enableRssPermalinks']);
- $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
- $GLOBALS['config']['HIDE_PUBLIC_LINKS'] = !empty($_POST['hidePublicLinks']);
- try {
- writeConfig($GLOBALS, isLoggedIn());
- }
- 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=tools\';</script>';
- exit;
- }
- echo '<script>alert("Configuration was saved.");document.location=\'?do=tools\';</script>';
- exit;
- }
- else // Show the configuration form.
- {
- $PAGE->assign('linkcount',count($LINKSDB));
- $PAGE->assign('token',getToken());
- $PAGE->assign('title', empty($GLOBALS['title']) ? '' : $GLOBALS['title'] );
- $PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'] );
- list($timezone_form, $timezone_js) = generateTimeZoneForm($GLOBALS['timezone']);
- $PAGE->assign('timezone_form', $timezone_form);
- $PAGE->assign('timezone_js',$timezone_js);
- $PAGE->renderPage('configure');
- exit;
- }
- }
- // -------- User wants to rename a tag or delete it
- if ($targetPage == Router::$PAGE_CHANGETAG)
- {
- if (empty($_POST['fromtag']) || (empty($_POST['totag']) && isset($_POST['renametag']))) {
- $PAGE->assign('linkcount', count($LINKSDB));
- $PAGE->assign('token', getToken());
- $PAGE->assign('tags', $LINKSDB->allTags());
- $PAGE->renderPage('changetag');
- exit;
- }
- if (!tokenOk($_POST['token'])) {
- die('Wrong token.');
- }
- // Delete a tag:
- if (isset($_POST['deletetag']) && !empty($_POST['fromtag'])) {
- $needle=trim($_POST['fromtag']);
- // True for case-sensitive tag search.
- $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
- foreach($linksToAlter as $key=>$value)
- {
- $tags = explode(' ',trim($value['tags']));
- unset($tags[array_search($needle,$tags)]); // Remove tag.
- $value['tags']=trim(implode(' ',$tags));
- $LINKSDB[$key]=$value;
- }
- $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
- echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
- exit;
- }
- // Rename a tag:
- if (isset($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
- $needle=trim($_POST['fromtag']);
- // True for case-sensitive tag search.
- $linksToAlter = $LINKSDB->filter(LinkFilter::$FILTER_TAG, $needle, true);
- foreach($linksToAlter as $key=>$value)
- {
- $tags = explode(' ',trim($value['tags']));
- $tags[array_search($needle,$tags)] = trim($_POST['totag']); // Replace tags value.
- $value['tags']=trim(implode(' ',$tags));
- $LINKSDB[$key]=$value;
- }
- $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
- echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
- exit;
- }
- }
- // -------- User wants to add a link without using the bookmarklet: Show form.
- if ($targetPage == Router::$PAGE_ADDLINK)
- {
- $PAGE->assign('linkcount',count($LINKSDB));
- $PAGE->renderPage('addlink');
- exit;
- }
- // -------- User clicked the "Save" button when editing a link: Save link to database.
- if (isset($_POST['save_edit']))
- {
- if (!tokenOk($_POST['token'])) die('Wrong token.'); // Go away!
- $tags = trim(preg_replace('/\s\s+/',' ', $_POST['lf_tags'])); // Remove multiple spaces.
- $tags = implode(' ', array_unique(explode(' ', $tags))); // Remove duplicates.
- $linkdate=$_POST['lf_linkdate'];
- $url = trim($_POST['lf_url']);
- if (!startsWith($url,'http:') && !startsWith($url,'https:') && !startsWith($url,'ftp:') && !startsWith($url,'magnet:') && !startsWith($url,'?') && !startsWith($url,'javascript:'))
- $url = 'http://'.$url;
- $link = array('title'=>trim($_POST['lf_title']),'url'=>$url,'description'=>trim($_POST['lf_description']),'private'=>(isset($_POST['lf_private']) ? 1 : 0),
- 'linkdate'=>$linkdate,'tags'=>str_replace(',',' ',$tags));
- if ($link['title']=='') $link['title']=$link['url']; // If title is empty, use the URL as title.
- $pluginManager->executeHooks('save_link', $link);
- $LINKSDB[$linkdate] = $link;
- $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // Save to disk.
- pubsubhub();
- // 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']) ? escape($_POST['returnurl']): '?';
- $location = generateLocation($returnurl, $_SERVER['HTTP_HOST'], array('addlink', 'post', 'edit_link'));
- $location .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
- header('Location: '. $location); // After saving the link, redirect to the page the user was on.
- exit;
- }
- // -------- User clicked the "Cancel" button when editing a link.
- if (isset($_POST['cancel_edit']))
- {
- // 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; }
- $returnurl = ( isset($_POST['returnurl']) ? $_POST['returnurl'] : '?' );
- $returnurl .= '#'.smallHash($_POST['lf_linkdate']); // Scroll to the link which has been edited.
- $returnurl = generateLocation($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 (isset($_POST['delete_link']))
- {
- if (!tokenOk($_POST['token'])) die('Wrong token.');
- // We do not need to ask for confirmation:
- // - confirmation is handled by JavaScript
- // - we are protected from XSRF by the token.
- $linkdate=$_POST['lf_linkdate'];
- $pluginManager->executeHooks('delete_link', $LINKSDB[$linkdate]);
- unset($LINKSDB[$linkdate]);
- $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']); // save to disk
- // 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; }
- // Pick where we're going to redirect
- // =============================================================
- // Basically, we can't redirect to where we were previously if it was a permalink
- // or an edit_link, because it would 404.
- // Cases:
- // - / : nothing in $_GET, redirect to self
- // - /?page : redirect to self
- // - /?searchterm : redirect to self (there might be other links)
- // - /?searchtags : redirect to self
- // - /permalink : redirect to / (the link does not exist anymore)
- // - /?edit_link : redirect to / (the link does not exist anymore)
- // PHP treats the permalink as a $_GET variable, so we need to check if every condition for self
- // redirect is not satisfied, and only then redirect to /
- $location = "?";
- // Self redirection
- if (count($_GET) == 0
- || isset($_GET['page'])
- || isset($_GET['searchterm'])
- || isset($_GET['searchtags'])
- ) {
- if (isset($_POST['returnurl'])) {
- $location = $_POST['returnurl']; // Handle redirects given by the form
- } else {
- $location = generateLocation($_SERVER['HTTP_REFERER'], $_SERVER['HTTP_HOST'], array('delete_link'));
- }
- }
- 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']))
- {
- $link = $LINKSDB[$_GET['edit_link']]; // Read database
- if (!$link) { header('Location: ?'); exit; } // Link not found in database.
- $data = array(
- 'linkcount' => count($LINKSDB),
- 'link' => $link,
- 'link_is_new' => false,
- 'token' => getToken(),
- 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
- 'tags' => $LINKSDB->allTags(),
- );
- $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'])) {
- $url = cleanup_url(escape($_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('Ymd_His'));
- // 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) && $charset != 'utf-8') {
- $title = mb_convert_encoding($title, $charset, 'utf-8');
- }
- }
- }
- if ($url == '') {
- $url = '?' . smallHash($linkdate);
- $title = 'Note: ';
- }
- $link = array(
- 'linkdate' => $linkdate,
- 'title' => $title,
- 'url' => $url,
- 'description' => $description,
- 'tags' => $tags,
- 'private' => $private
- );
- }
- $data = array(
- 'linkcount' => count($LINKSDB),
- 'link' => $link,
- 'link_is_new' => $link_is_new,
- 'token' => getToken(), // XSRF protection.
- 'http_referer' => (isset($_SERVER['HTTP_REFERER']) ? escape($_SERVER['HTTP_REFERER']) : ''),
- 'source' => (isset($_GET['source']) ? $_GET['source'] : ''),
- 'tags' => $LINKSDB->allTags(),
- );
- $pluginManager->executeHooks('render_editlink', $data);
- foreach ($data as $key => $value) {
- $PAGE->assign($key, $value);
- }
- $PAGE->renderPage('editlink');
- exit;
- }
- // -------- Export as Netscape Bookmarks HTML file.
- if ($targetPage == Router::$PAGE_EXPORT)
- {
- if (empty($_GET['what']))
- {
- $PAGE->assign('linkcount',count($LINKSDB));
- $PAGE->renderPage('export');
- exit;
- }
- $exportWhat=$_GET['what'];
- if (!array_intersect(array('all','public','private'),array($exportWhat))) die('What are you trying to export???');
- header('Content-Type: text/html; charset=utf-8');
- header('Content-disposition: attachment; filename=bookmarks_'.$exportWhat.'_'.strval(date('Ymd_His')).'.html');
- $currentdate=date('Y/m/d H:i:s');
- echo <<<HTML
- <!DOCTYPE NETSCAPE-Bookmark-file-1>
- <!-- This is an automatically generated file.
- It will be read and overwritten.
- DO NOT EDIT! -->
- <!-- Shaarli {$exportWhat} bookmarks export on {$currentdate} -->
- <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=UTF-8">
- <TITLE>Bookmarks</TITLE>
- <H1>Bookmarks</H1>
- HTML;
- foreach($LINKSDB as $link)
- {
- if ($exportWhat=='all' ||
- ($exportWhat=='private' && $link['private']!=0) ||
- ($exportWhat=='public' && $link['private']==0))
- {
- echo '<DT><A HREF="'.$link['url'].'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
- if ($link['tags']!='') echo ' TAGS="'.str_replace(' ',',',$link['tags']).'"';
- echo '>'.$link['title']."</A>\n";
- if ($link['description']!='') echo '<DD>'.$link['description']."\n";
- }
- }
- exit;
- }
- // -------- User is uploading a file for import
- if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=upload'))
- {
- // If file is too big, some form field may be missing.
- if (!isset($_POST['token']) || (!isset($_FILES)) || (isset($_FILES['filetoupload']['size']) && $_FILES['filetoupload']['size']==0))
- {
- $returnurl = ( empty($_SERVER['HTTP_REFERER']) ? '?' : $_SERVER['HTTP_REFERER'] );
- echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.escape($returnurl).'\';</script>';
- exit;
- }
- if (!tokenOk($_POST['token'])) die('Wrong token.');
- importFile();
- exit;
- }
- // -------- Show upload/import dialog:
- if ($targetPage == Router::$PAGE_IMPORT)
- {
- $PAGE->assign('linkcount',count($LINKSDB));
- $PAGE->assign('token',getToken());
- $PAGE->assign('maxfilesize',getMaxFileSize());
- $PAGE->renderPage('import');
- exit;
- }
- // Plugin administration page
- if ($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, $GLOBALS['plugins']);
- 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) {
- $GLOBALS['plugins'][$param] = escape($value);
- }
- }
- else {
- $GLOBALS['config']['ENABLED_PLUGINS'] = save_plugin_config($_POST);
- }
- writeConfig($GLOBALS, isLoggedIn());
- }
- 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("'. $e->getMessage() .'");document.location=\'?do=pluginsadmin\';</script>';
- exit;
- }
- header('Location: ?do='. Router::$PAGE_PLUGINSADMIN);
- exit;
- }
- // -------- Otherwise, simply display search form and links:
- showLinkList($PAGE, $LINKSDB);
- exit;
- }
- // -----------------------------------------------------------------------------------------------
- // Process the import file form.
- function importFile()
- {
- if (!isLoggedIn()) { die('Not allowed.'); }
- $LINKSDB = new LinkDB(
- $GLOBALS['config']['DATASTORE'],
- isLoggedIn(),
- $GLOBALS['config']['HIDE_PUBLIC_LINKS'],
- $GLOBALS['redirector']
- );
- $filename=$_FILES['filetoupload']['name'];
- $filesize=$_FILES['filetoupload']['size'];
- $data=file_get_contents($_FILES['filetoupload']['tmp_name']);
- $private = (empty($_POST['private']) ? 0 : 1); // Should the links be imported as private?
- $overwrite = !empty($_POST['overwrite']) ; // Should the imported links overwrite existing ones?
- $import_count=0;
- // Sniff file type:
- $type='unknown';
- if (startsWith($data,'<!DOCTYPE NETSCAPE-Bookmark-file-1>')) $type='netscape'; // Netscape bookmark file (aka Firefox).
- // Then import the bookmarks.
- if ($type=='netscape')
- {
- // This is a standard Netscape-style bookmark file.
- // This format is supported by all browsers (except IE, of course), also Delicious, Diigo and others.
- foreach(explode('<DT>',$data) as $html) // explode is very fast
- {
- $link = array('linkdate'=>'','title'=>'','url'=>'','description'=>'','tags'=>'','private'=>0);
- $d = explode('<DD>',$html);
- if (startswith($d[0],'<A '))
- {
- $link['description'] = (isset($d[1]) ? html_entity_decode(trim($d[1]),ENT_QUOTES,'UTF-8') : ''); // Get description (optional)
- preg_match('!<A .*?>(.*?)</A>!i',$d[0],$matches); $link['title'] = (isset($matches[1]) ? trim($matches[1]) : ''); // Get title
- $link['title'] = html_entity_decode($link['title'],ENT_QUOTES,'UTF-8');
- preg_match_all('! ([A-Z_]+)=\"(.*?)"!i',$html,$matches,PREG_SET_ORDER); // Get all other attributes
- $raw_add_date=0;
- foreach($matches as $m)
- {
- $attr=$m[1]; $value=$m[2];
- if ($attr=='HREF') $link['url']=html_entity_decode($value,ENT_QUOTES,'UTF-8');
- elseif ($attr=='ADD_DATE')
- {
- $raw_add_date=intval($value);
- if ($raw_add_date>30000000000) $raw_add_date/=1000; //If larger than year 2920, then was likely stored in milliseconds instead of seconds
- }
- elseif ($attr=='PRIVATE') $link['private']=($value=='0'?0:1);
- elseif ($attr=='TAGS') $link['tags']=html_entity_decode(str_replace(',',' ',$value),ENT_QUOTES,'UTF-8');
- }
- if ($link['url']!='')
- {
- if ($private==1) $link['private']=1;
- $dblink = $LINKSDB->getLinkFromUrl($link['url']); // See if the link is already in database.
- if ($dblink==false)
- { // Link not in database, let's import it...
- if (empty($raw_add_date)) $raw_add_date=time(); // In case of shitty bookmark file with no ADD_DATE
- // Make sure date/time is not already used by another link.
- // (Some bookmark files have several different links with the same ADD_DATE)
- // We increment date by 1 second until we find a date which is not used in DB.
- // (so that links that have the same date/time are more or less kept grouped by date, but do not conflict.)
- while (!empty($LINKSDB[date('Ymd_His',$raw_add_date)])) { $raw_add_date++; }// Yes, I know it's ugly.
- $link['linkdate']=date('Ymd_His',$raw_add_date);
- $LINKSDB[$link['linkdate']] = $link;
- $import_count++;
- }
- else // Link already present in database.
- {
- if ($overwrite)
- { // If overwrite is required, we import link data, except date/time.
- $link['linkdate']=$dblink['linkdate'];
- $LINKSDB[$link['linkdate']] = $link;
- $import_count++;
- }
- }
- }
- }
- }
- $LINKSDB->savedb($GLOBALS['config']['PAGECACHE']);
- echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) was successfully processed: '.$import_count.' links imported.");document.location=\'?\';</script>';
- }
- else
- {
- echo '<script>alert("File '.json_encode($filename).' ('.$filesize.' bytes) has an unknown file format. Nothing was imported.");document.location=\'?\';</script>';
- }
- }
- // -----------------------------------------------------------------------------------------------
- // Template for the list of links (<div id="linklist">)
- // This function fills all the necessary fields in the $PAGE for the template 'linklist.html'
- function buildLinkList($PAGE,$LINKSDB)
- {
- // ---- Filter link database according to parameters
- $search_type = '';
- $search_crits = '';
- $privateonly = !empty($_SESSION['privateonly']) ? true : false;
- // Fulltext search
- if (isset($_GET['searchterm'])) {
- $search_crits = escape(trim($_GET['searchterm']));
- $search_type = LinkFilter::$FILTER_TEXT;
- $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
- }
- // Search by tag
- elseif (isset($_GET['searchtags'])) {
- $search_crits = explode(' ', escape(trim($_GET['searchtags'])));
- $search_type = LinkFilter::$FILTER_TAG;
- $linksToDisplay = $LINKSDB->filter($search_type, $search_crits, false, $privateonly);
- }
- // Detect smallHashes in URL.
- elseif (isset($_SERVER['QUERY_STRING'])
- && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/', $_SERVER['QUERY_STRING'])) {
- $search_type = LinkFilter::$FILTER_HASH;
- $search_crits = substr(trim($_SERVER["QUERY_STRING"], '/'), 0, 6);
- $linksToDisplay = $LINKSDB->filter($search_type, $search_crits);
- if (count($linksToDisplay) == 0) {
- $PAGE->render404('The link you are trying to reach does not exist or has been deleted.');
- exit;
- }
- }
- // Otherwise, display without filtering.
- else {
- $linksToDisplay = $LINKSDB->filter('', '', false, $privateonly);
- }
- // ---- Handle paging.
- $keys = array();
- foreach ($linksToDisplay as $key => $value) {
- $keys[] = $key;
- }
- // If there is only a single link, we change on-the-fly the title of the page.
- if (count($linksToDisplay) == 1) {
- $GLOBALS['pagetitle'] = $linksToDisplay[$keys[0]]['title'].' - '.$GLOBALS['title'];
- }
- // 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'], $GLOBALS['redirector']);
- $classLi = ($i % 2) != 0 ? '' : 'publicLinkHightLight';
- $link['class'] = $link['private'] == 0 ? $classLi : 'private';
- $link['timestamp'] = linkdate2timestamp($link['linkdate']);
- $taglist = explode(' ', $link['tags']);
- uasort($taglist, 'strcasecmp');
- $link['taglist'] = $taglist;
- $link['shorturl'] = smallHash($link['linkdate']);
- // 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
- $searchterm = empty($_GET['searchterm']) ? '' : '&searchterm=' . $_GET['searchterm'];
- $searchtags = empty($_GET['searchtags']) ? '' : '&searchtags=' . $_GET['searchtags'];
- $previous_page_url = '';
- if ($i != count($keys)) {
- $previous_page_url = '?page=' . ($page+1) . $searchterm . $searchtags;
- }
- $next_page_url='';
- if ($page>1) {
- $next_page_url = '?page=' . ($page-1) . $searchterm . $searchtags;
- }
- $token = '';
- if (isLoggedIn()) {
- $token = getToken();
- }
- // Fill all template fields.
- $data = array(
- 'linkcount' => count($LINKSDB),
- 'previous_page_url' => $previous_page_url,
- 'next_page_url' => $next_page_url,
- 'page_current' => $page,
- 'page_max' => $pagecount,
- 'result_count' => count($linksToDisplay),
- 'search_type' => $search_type,
- 'search_crits' => $search_crits,
- 'redirector' => empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'], // Optional redirector URL.
- 'token' => $token,
- 'links' => $linkDisp,
- 'tags' => $LINKSDB->allTags(),
- );
- // FIXME! temporary fix - see #399.
- if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
- $data['pagetitle'] = $GLOBALS['pagetitle'];
- }
- $pluginManager = PluginManager::getInstance();
- $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 $url
- // Returns an associative array with thumbnail attributes (src,href,width,height,style,alt)
- // Some of them may be missing.
- // Return an empty array if no thumbnail available.
- function computeThumbnail($url,$href=false)
- {
- if (!$GLOBALS['config']['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'=>$href,'width'=>'120','style'=>'height:auto;','alt'=>'imageshack.us thumbnail');
- }
- }
- // Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
- // So we deport the thumbnail generation in order not to slow down page generation
- // (and we also cache the thumbnail)
- if (!$GLOBALS['config']['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, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
- return array('src'=>index_url($_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, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
- return array('src'=>index_url($_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)
- {
- $t = computeThumbnail($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 $url
- // Returns '' if no thumbnail available.
- function lazyThumbnail($url,$href=false)
- {
- $t = computeThumbnail($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 $html;
- }
- // -----------------------------------------------------------------------------------------------
- // Installation
- // This function should NEVER be called if the file data/config.php exists.
- function install()
- {
- // On free.fr host, make sure the /sessions directory exists, otherwise login will not work.
- if (endsWith($_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']) || $_SESSION['session_tested']!='Working'))
- { // Step 2: Check if data in session is correct.
- echo '<pre>Sessions do not seem to work correctly on your server.<br>';
- echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
- echo 'It currently points to '.session_save_path().'<br>';
- echo 'Check that the hostname used to access Shaarli contains a dot. On some browsers, accessing your server via a hostname like \'localhost\' or any custom hostname without a dot causes cookie storage to fail. We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>';
- echo '<br><a href="?">Click to try again.</a></pre>';
- die;
- }
- if (!isset($_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($_POST['city'])) {
- if (isTimeZoneValid($_POST['continent'], $_POST['city'])) {
- $tz = $_POST['continent'].'/'.$_POST['city'];
- }
- }
- $GLOBALS['timezone'] = $tz;
- // Everything is ok, let's create config file.
- $GLOBALS['login'] = $_POST['setlogin'];
- $GLOBALS['salt'] = sha1(uniqid('',true).'_'.mt_rand()); // Salt renders rainbow-tables attacks useless.
- $GLOBALS['hash'] = sha1($_POST['setpassword'].$GLOBALS['login'].$GLOBALS['salt']);
- $GLOBALS['title'] = (empty($_POST['title']) ? 'Shared links on '.escape(index_url($_SERVER)) : $_POST['title'] );
- $GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
- try {
- writeConfig($GLOBALS, 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("'. $e->getMessage() .'");document.location=\'?\';</script>';
- exit;
- }
- echo '<script>alert("Shaarli is now configured. Please enter your login/password and start shaaring your links!");document.location=\'?do=login\';</script>';
- exit;
- }
- // Display config form:
- list($timezone_form, $timezone_js) = generateTimeZoneForm();
- $timezone_html = '';
- if ($timezone_form != '') {
- $timezone_html = '<tr><td><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
- }
- $PAGE = new pageBuilder;
- $PAGE->assign('timezone_html',$timezone_html);
- $PAGE->assign('timezone_js',$timezone_js);
- $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.
- */
- function genThumbnail()
- {
- // Make sure the parameters in the URL were generated by us.
- $sign = hash_hmac('sha256', $_GET['url'], $GLOBALS['salt']);
- if ($sign!=$_GET['hmac']) die('Naughty boy!');
- // 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($GLOBALS['config']['CACHEDIR'].'/'.$thumbname))
- { // We have the thumbnail, just serve it:
- header('Content-Type: image/jpeg');
- echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname);
- return;
- }
- // We may also serve a blank image (if service did not respond)
- $blankname=hash('sha1',$_GET['url']).'.gif';
- if (is_file($GLOBALS['config']['CACHEDIR'].'/'.$blankname))
- {
- header('Content-Type: image/gif');
- echo file_get_contents($GLOBALS['config']['CACHEDIR'].'/'.$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($headers[0], '200 OK') !== false) {
- // Save image to cache.
- file_put_contents($GLOBALS['config']['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($headers[0], '200 OK') !== false) {
- // Save image to cache.
- file_put_contents($GLOBALS['config']['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) {
- $filepath=$GLOBALS['config']['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) {
- $filepath=$GLOBALS['config']['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) {
- $filepath=$GLOBALS['config']['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)
- $blankgif = base64_decode('R0lGODlhCAAIAIAAAP///////yH5BAEKAAEALAAAAAAIAAgAAAIHjI+py+1dAAA7');
- file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$blankname,$blankgif); // Also put something in cache so that this URL is not requested twice.
- 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;
- }
- try {
- mergeDeprecatedConfig($GLOBALS, isLoggedIn());
- } catch(Exception $e) {
- error_log(
- 'ERROR while merging deprecated options.php file.' . PHP_EOL .
- $e->getMessage()
- );
- }
- if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=genthumbnail')) { genThumbnail(); exit; } // Thumbnail generation/cache does not need the link database.
- if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=rss')) { showRSS(); exit; }
- if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=atom')) { showATOM(); exit; }
- if (isset($_SERVER["QUERY_STRING"]) && startswith($_SERVER["QUERY_STRING"],'do=dailyrss')) { showDailyRSS(); exit; }
- if (!isset($_SESSION['LINKS_PER_PAGE'])) $_SESSION['LINKS_PER_PAGE']=$GLOBALS['config']['LINKS_PER_PAGE'];
- renderPage();
- ?>
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