Knah-Tsaeb/MyShaarli
Knah-Tsaeb/MyShaarli
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity
MyShaarli/index.php
Knah Tsaeb 9a3783ed20 [fix] bad merge
2016-08-25 14:27:57 +02:00

3080 lines
135 KiB
PHP
Raw Blame History

<?php
// Shaarli 0.0.41 beta - Shaare your links...
// The personal, minimalist, super-fast, no-database delicious clone. By sebsauvage.net
// http://sebsauvage.net/wiki/doku.php?id=php:shaarli
// Licence: http://www.opensource.org/licenses/zlib-license.php
// Requires: php 5.1.x (but autocomplete fields will only work if you have php 5.2.x)
// -----------------------------------------------------------------------------------------------
ini_set('display_errors', false); // Full Path Disclosure https://github.com/sebsauvage/Shaarli/issues/222
// NEVER TRUST IN PHP.INI
// Some hosts do not define a default timezone in php.ini,
// so we have to do this for avoid the strict standard error.
date_default_timezone_set('UTC');
// -----------------------------------------------------------------------------------------------
// Hardcoded parameter (These parameters can be overwritten by creating the file /YourDataDir/options.php see next line)
$GLOBALS['config']['DATADIR'] = 'data'; // Data subdirectory
$GLOBALS['config']['CONFIG_FILE'] = $GLOBALS['config']['DATADIR'].'/config.php'; // Configuration file (user login/password)
$GLOBALS['config']['DATASTORE'] = $GLOBALS['config']['DATADIR'].'/datastore.php'; // Data storage file.
$GLOBALS['config']['LINKS_PER_PAGE'] = 20; // Default links per page.
$GLOBALS['config']['IPBANS_FILENAME'] = $GLOBALS['config']['DATADIR'].'/ipbans.php'; // File storage for failures and bans.
$GLOBALS['config']['BAN_AFTER'] = 4; // Ban IP after this many failures.
$GLOBALS['config']['BAN_DURATION'] = 1800; // Ban duration for IP address after login failures (in seconds) (1800 sec. = 30 minutes)
$GLOBALS['config']['OPEN_SHAARLI'] = false; // If true, anyone can add/edit/delete links without having to login
$GLOBALS['config']['HIDE_TIMESTAMPS'] = false; // If true, the moment when links were saved are not shown to users that are not logged in.
$GLOBALS['config']['ENABLE_THUMBNAILS'] = true; // Enable thumbnails in links.
$GLOBALS['config']['ENABLE_FAVICON'] = true; // Enable favicon in links.
$GLOBALS['config']['CACHEDIR'] = 'cache'; // Cache directory for thumbnails for SLOW services (like flickr)
$GLOBALS['config']['PAGECACHE'] = 'pagecache'; // Page cache directory.
$GLOBALS['config']['ENABLE_LOCALCACHE'] = true; // Enable Shaarli to store thumbnail in a local cache. Disable to reduce webspace usage.
// Care if favicon is active and local cache are false serve page can be long
$GLOBALS['config']['PUBSUBHUB_URL'] = ''; // PubSubHubbub support. Put an empty string to disable, or put your hub url here to enable.
// Note: You must have publisher.php in the same directory as Shaarli index.php
$GLOBALS['config']['UPDATECHECK_FILENAME'] = $GLOBALS['config']['DATADIR'].'/lastupdatecheck.txt'; // For updates check of Shaarli.
$GLOBALS['config']['UPDATECHECK_INTERVAL'] = 86400; // Updates check frequency for Shaarli. 86400 seconds=24 hours
$GLOBALS['config']['UPDATECHECK_URL'] = 'http://book.knah-tsaeb.org/shaarli_version.txt'; // Define last version of myShaarli
$GLOBALS['config']['UPDATECHECK_DOWNLOAD'] = 'https://forge.leslibres.org/Knah-Tsaeb/MyShaarli';
$GLOBALS['config']['ENABLE_UPDATECHECK'] = true;
$GLOBALS['config']['externalThumbshot'] = ''; // Url for external thumbnailer
// exemple : http://images.thumbshots.com/image.aspx?cid=dgdfgdfg&v=1&w=120&url=
// the last param must be a url
$GLOBALS['config']['ENABLE_MARKDOWN'] = true;
$GLOBALS['config']['WALLABAG_URL'] = '';
$GLOBALS['config']['WALLABAG_VERSION'] = ''; // 1 for V1 or 2 for v2
$GLOBALS['config']['contactLink'] = ''; // Define link for contact Example : http://example.com/contact.php or mailo:contact@example.com
$GLOBALS['config']['THEME'] = 'myShaarli';
$GLOBALS['config']['DATE_FORMAT'] = '%A %d %B %Y %T'; // see http://php.net/manual/en/function.strftime.php for more example
// -----------------------------------------------------------------------------------------------
// You should not touch below (or at your own risks !)
// Optionnal config file.
if (file_exists($GLOBALS['config']['CONFIG_FILE'])) {
require $GLOBALS['config']['CONFIG_FILE']; // Read login/password hash into $GLOBALS.
}
if (is_file($GLOBALS['config']['DATADIR'].'/options.php')) {
require $GLOBALS['config']['DATADIR'].'/options.php';
}
define('myShaarli_version', '1.1.4');
define('PHPPREFIX', '<?php /* '); // Prefix to encapsulate data in php code.
define('PHPSUFFIX', ' */ ?>'); // Suffix to encapsulate data in php code.
// http://server.com/x/shaarli --> /shaarli/
define('WEB_PATH', substr($_SERVER['REQUEST_URI'], 0, 1 + strrpos($_SERVER['REQUEST_URI'], '/', 0)));
// Force cookie path (but do not change lifetime)
$cookie = session_get_cookie_params();
$cookiedir = ''; if (dirname($_SERVER['SCRIPT_NAME']) != '/') {
$cookiedir = dirname($_SERVER['SCRIPT_NAME']).'/';
}
session_set_cookie_params($cookie['lifetime'], $cookiedir, $_SERVER['HTTP_HOST']); // Set default cookie expiration and path.
// Set session parameters on server side.
define('INACTIVITY_TIMEOUT', 3600); // (in seconds). If the user does not access any page within this time, his/her session is considered expired.
ini_set('session.use_cookies', 1); // Use cookies to store session.
ini_set('session.use_only_cookies', 1); // Force cookies for session (phpsessionID forbidden in URL)
ini_set('session.use_trans_sid', false); // Prevent php to use sessionID in URL if cookies are disabled.
session_name('shaarli');
if (session_id() == '') {
session_start();
} // Start session if needed (Some server auto-start sessions).
// PHP Settings
ini_set('max_input_time', '60'); // High execution time in case of problematic imports/exports.
ini_set('memory_limit', '128M'); // Try to set max upload file size and read (May not work on some hosts).
ini_set('post_max_size', '16M');
ini_set('upload_max_filesize', '16M');
checkphpversion();
error_reporting(E_ALL ^ E_WARNING); // See all error except warnings.
//error_reporting(-1); // See all errors (for debugging only)
if ($GLOBALS['config']['ENABLE_MARKDOWN'] === true) {
include 'inc/Parsedown.php';
}
include 'inc/rain.tpl.class.php'; //include Rain TPL
raintpl::$tpl_dir = 'tpl/'.$GLOBALS['config']['THEME'].'/'; // template directory
if (!is_dir('tmp')) {
mkdir('tmp', 0705);
chmod('tmp', 0705);
}
raintpl::$cache_dir = 'tmp/'; // cache directory
ob_start(); // Output buffering for the page cache.
// In case stupid admin has left magic_quotes enabled in php.ini:
if (get_magic_quotes_gpc()) {
function stripslashes_deep($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', $_COOKIE);
}
// Prevent caching on client side or proxy: (yes, it's ugly)
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Cache-Control: post-check=0, pre-check=0', false);
header('Pragma: no-cache');
// Directories creations (Note that your web host may require differents rights than 705.)
if (!is_writable(realpath(dirname(__FILE__)))) {
die('<pre>ERROR: Shaarli does not have the right to write in its own directory ('.realpath(dirname(__FILE__)).').</pre>');
}
if (!is_dir($GLOBALS['config']['DATADIR'])) {
mkdir($GLOBALS['config']['DATADIR'], 0705);
chmod($GLOBALS['config']['DATADIR'], 0705);
}
if (!is_dir('tmp')) {
mkdir('tmp', 0705);
chmod('tmp', 0705);
} // For RainTPL temporary files.
if (!is_file($GLOBALS['config']['DATADIR'].'/.htaccess')) {
file_put_contents($GLOBALS['config']['DATADIR'].'/.htaccess', "Allow from none\nDeny from all\n");
} // Protect data files.
// Second check to see if Shaarli can write in its directory, because on some hosts is_writable() is not reliable.
if (!is_file($GLOBALS['config']['DATADIR'].'/.htaccess')) {
die('<pre>ERROR: Shaarli does not have the right to write in its data directory ('.realpath($GLOBALS['config']['DATADIR']).').</pre>');
}
if ($GLOBALS['config']['ENABLE_LOCALCACHE']) {
if (!is_dir($GLOBALS['config']['CACHEDIR'])) {
mkdir($GLOBALS['config']['CACHEDIR'], 0705);
chmod($GLOBALS['config']['CACHEDIR'], 0705);
}
if (!is_file($GLOBALS['config']['CACHEDIR'].'/.htaccess')) {
file_put_contents($GLOBALS['config']['CACHEDIR'].'/.htaccess', "Allow from none\nDeny from all\n");
} // Protect data files.
}
// Handling of old config file which do not have the new parameters.
if (empty($GLOBALS['title'])) {
$GLOBALS['title'] = 'Shared links on '.htmlspecialchars(indexUrl());
}
if (empty($GLOBALS['timezone'])) {
$GLOBALS['timezone'] = date_default_timezone_get();
}
if (empty($GLOBALS['redirector'])) {
$GLOBALS['redirector'] = '';
}
if (empty($GLOBALS['disablesessionprotection'])) {
$GLOBALS['disablesessionprotection'] = false;
}
if (empty($GLOBALS['disablejquery'])) {
$GLOBALS['disablejquery'] = false;
}
if (empty($GLOBALS['privateLinkByDefault'])) {
$GLOBALS['privateLinkByDefault'] = false;
}
if (empty($GLOBALS['titleLink'])) {
$GLOBALS['titleLink'] = '?';
}
// Run config screen if first run:
if (!is_file($GLOBALS['config']['CONFIG_FILE'])) {
install();
}
// a token depending of deployment salt, user password, and the current ip
define('STAY_SIGNED_IN_TOKEN', sha1($GLOBALS['hash'].$_SERVER['REMOTE_ADDR'].$GLOBALS['salt']));
autoLocale(); // Sniff browser language and set date format accordingly.
header('Content-Type: text/html; charset=utf-8'); // We use UTF-8 for proper international characters handling.
// Check php version
function checkphpversion()
{
if (version_compare(PHP_VERSION, '5.1.0') < 0) {
header('Content-Type: text/plain; charset=utf-8');
echo 'Your server supports php '.PHP_VERSION.'. Shaarli requires at least php 5.1.0, and thus cannot run. Sorry.';
exit;
}
}
// Checks if an update is available for Shaarli.
// (at most once a day, and only for registered user.)
// Output: '' = no new version.
// other= the available version.
function checkUpdate()
{
if (!isLoggedIn()) {
return false; // Do not check versions for visitors.
}
if (empty($GLOBALS['config']['ENABLE_UPDATECHECK'])) {
return false; // Do not check if the user doesn't want to.
}
// Get latest version number at most once a day.
if (!is_file($GLOBALS['config']['UPDATECHECK_FILENAME']) || (filemtime($GLOBALS['config']['UPDATECHECK_FILENAME']) < time() - ($GLOBALS['config']['UPDATECHECK_INTERVAL']))) {
$version = myShaarli_version;
list($httpstatus, $headers, $data) = getHTTP($GLOBALS['config']['UPDATECHECK_URL'], 2);
if (strpos($httpstatus, '200 OK') !== false) {
$version = $data;
}
// If failed, nevermind. We don't want to bother the user with that.
file_put_contents($GLOBALS['config']['UPDATECHECK_FILENAME'], $version); // touch file date
}
// Compare versions:
$newestversion = trim(file_get_contents($GLOBALS['config']['UPDATECHECK_FILENAME']));
if (version_compare(strtolower(myShaarli_version), strtolower($newestversion)) == 0) {
return false;
}
if (version_compare(strtolower(myShaarli_version), strtolower($newestversion)) == 1) {
return 'You have future version ?!';
}
if (version_compare(strtolower(myShaarli_version), strtolower($newestversion)) == -1) {
return 'New update of myShaarli available.';
}
return false;
}
// -----------------------------------------------------------------------------------------------
// Simple cache system (mainly for the RSS/ATOM feeds).
class pageCache
{
private $url; // Full URL of the page to cache (typically the value returned by pageUrl())
private $shouldBeCached; // boolean: Should this url be cached ?
private $filename; // Name of the cache file for this url
/*
$url = url (typically the value returned by pageUrl())
$shouldBeCached = boolean. If false, the cache will be disabled.
*/
public function __construct($url, $shouldBeCached)
{
$this->url = $url;
$this->filename = $GLOBALS['config']['PAGECACHE'].'/'.sha1($url).'.cache';
$this->shouldBeCached = $shouldBeCached;
}
// If the page should be cached and a cached version exists,
// returns the cached version (otherwise, return null).
public function cachedVersion()
{
if (!$this->shouldBeCached) {
return;
}
if (is_file($this->filename)) {
return file_get_contents($this->filename);
exit;
}
return;
}
// Put a page in the cache.
public function cache($page)
{
if (!$this->shouldBeCached) {
return;
}
if (!is_dir($GLOBALS['config']['PAGECACHE'])) {
mkdir($GLOBALS['config']['PAGECACHE'], 0705);
chmod($GLOBALS['config']['PAGECACHE'], 0705);
}
file_put_contents($this->filename, $page);
}
// Purge the whole cache.
// (call with pageCache::purgeCache())
public static function purgeCache()
{
if (is_dir($GLOBALS['config']['PAGECACHE'])) {
$handler = opendir($GLOBALS['config']['PAGECACHE']);
if ($handler !== false) {
while (($filename = readdir($handler)) !== false) {
if (endsWith($filename, '.cache')) {
unlink($GLOBALS['config']['PAGECACHE'].'/'.$filename);
}
}
closedir($handler);
}
}
}
}
// -----------------------------------------------------------------------------------------------
// Log to text file
function logm($message)
{
$t = strval(date('Y/m/d H:i:s')).' - '.$_SERVER['REMOTE_ADDR'].' - '.strval($message)."\n";
file_put_contents($GLOBALS['config']['DATADIR'].'/log.txt', $t, FILE_APPEND);
}
// Same as nl2br(), but escapes < and >
function nl2br_escaped($html)
{
return str_replace('>', '&gt;', str_replace('<', '&lt;', nl2br($html)));
}
/* Returns the small hash of a string, using RFC 4648 base64url format
eg. smallHash('20111006_131924') --> yZH23w
Small hashes:
- are unique (well, as unique as crc32, at last)
- are always 6 characters long.
- only use the following characters: a-z A-Z 0-9 - _ @
- are NOT cryptographically secure (they CAN be forged)
In Shaarli, they are used as a tinyurl-like link to individual entries.
*/
function smallHash($text)
{
$t = rtrim(base64_encode(hash('crc32', $text, true)), '=');
return strtr($t, '+/', '-_');
}
// In a string, converts urls to clickable links.
// Function inspired from http://www.php.net/manual/en/function.preg-replace.php#85722
function text2clickable($url)
{
$redir = empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'];
return preg_replace('!(((?:https?|ftp|file)://|apt:|magnet:)\S+[[:alnum:]]/?)!si', '<a href="'.$redir.'$1" rel="nofollow">$1</a>', $url);
}
// This function inserts &nbsp; where relevant so that multiple spaces are properly displayed in HTML
// even in the absence of <pre> (This is used in description to keep text formatting)
function keepMultipleSpaces($text)
{
return str_replace(' ', ' &nbsp;', $text);
}
// ------------------------------------------------------------------------------------------
// 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(
indexUrl().'?do=atom',
indexUrl().'?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 == $GLOBALS['hash']) { // Login/password is correct.
fillSessionInfo();
logm('Login successful');
return true;
}
logm('Login failed for user '.$login);
return false;
}
// Returns true if the user is logged in.
function isLoggedIn()
{
if ($GLOBALS['config']['OPEN_SHAARLI']) {
return true;
}
if (!isset($GLOBALS['login'])) {
return false;
} // Shaarli is not configured yet.
if (@$_COOKIE['shaarli_staySignedIn'] === STAY_SIGNED_IN_TOKEN) {
fillSessionInfo();
return true;
}
// If session does not exist on server side, or IP address has changed, or session has expired, logout.
if (empty($_SESSION['uid']) || ($GLOBALS['disablesessionprotection'] == false && $_SESSION['ip'] != allIPs()) || time() >= $_SESSION['expires_on']) {
logout();
return false;
}
if (!empty($_SESSION['longlastingsession'])) {
$_SESSION['expires_on'] = time() + $_SESSION['longlastingsession'];
} // In case of "Stay signed in" checked.
else {
$_SESSION['expires_on'] = time() + INACTIVITY_TIMEOUT;
} // Standard session expiration date.
return true;
}
// Force logout.
function logout()
{
if (isset($_SESSION)) {
unset($_SESSION['uid'], $_SESSION['ip'], $_SESSION['username'], $_SESSION['privateonly']);
}
setcookie('shaarli_staySignedIn', false, 0, WEB_PATH);
}
// ------------------------------------------------------------------------------------------
// Brute force protection system
// Several consecutive failed logins will ban the IP address for 30 minutes.
if (!is_file($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('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'][$ip] <= time()) { // Ban expired, user can try to login again.
logm('Ban lifted.');
unset($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['HTTP_HOST']); // 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, $_SERVER['HTTP_HOST']); // 0 means "When browser closes"
session_regenerate_id(true);
}
// Optional redirect after login:
if (isset($_GET['post'])) {
header('Location: ?post='.urlencode($_GET['post']).(!empty($_GET['title']) ? '&title='.urlencode($_GET['title']) : '').(!empty($_GET['source']) ? '&source='.urlencode($_GET['source']) : ''));
exit;
}
if (isset($_POST['returnurl'])) {
if (endsWith($_POST['returnurl'], '?do=login')) {
header('Location: ?');
exit;
} // Prevent loops over login screen.
header('Location: '.$_POST['returnurl']);
exit;
}
header('Location: ?');
exit;
} else {
ban_loginFailed();
$redir = '';
if (isset($_GET['post'])) {
$redir = '&post='.urlencode($_GET['post']).(!empty($_GET['title']) ? '&title='.urlencode($_GET['title']) : '').(!empty($_GET['source']) ? '&source='.urlencode($_GET['source']) : '');
}
echo '<script>alert("Wrong login/password.");document.location=\'?do=login'.$redir.'\';</script>'; // Redirect to login screen.
exit;
}
}
// ------------------------------------------------------------------------------------------
// Misc utility functions:
// Try to get just domain for @via
function getJustDomain($url)
{
$parts = parse_url($url);
return trim($parts['host']);
}
// Returns the server URL (including port and http/https), without path.
// eg. "http://myserver.com:8080"
// You can append $_SERVER['SCRIPT_NAME'] to get the current script URL.
function serverUrl()
{
$https = (!empty($_SERVER['HTTPS']) && (strtolower($_SERVER['HTTPS']) == 'on')) || $_SERVER['SERVER_PORT'] == '443'; // HTTPS detection.
$serverport = ($_SERVER['SERVER_PORT'] == '80' || ($https && $_SERVER['SERVER_PORT'] == '443') ? '' : ':'.$_SERVER['SERVER_PORT']);
return 'http'.($https ? 's' : '').'://'.$_SERVER['HTTP_HOST'].$serverport;
}
// Returns the absolute URL of current script, without the query.
// (eg. http://sebsauvage.net/links/)
function indexUrl()
{
$scriptname = $_SERVER['SCRIPT_NAME'];
// If the script is named 'index.php', we remove it (for better looking URLs,
// eg. http://mysite.com/shaarli/?abcde instead of http://mysite.com/shaarli/index.php?abcde)
if (endswith($scriptname, 'index.php')) {
$scriptname = substr($scriptname, 0, strlen($scriptname) - 9);
}
return serverUrl().$scriptname;
}
// Returns the absolute URL of current script, WITH the query.
// (eg. http://sebsauvage.net/links/?toto=titi&spamspamspam=humbug)
function pageUrl()
{
return indexUrl().(!empty($_SERVER['QUERY_STRING']) ? '?'.$_SERVER['QUERY_STRING'] : '');
}
// Convert post_max_size/upload_max_filesize (eg.'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 ? (eg. 2M instead of 2000000)
return $maxsize;
}
// Tells if a string start with a substring or not.
function startsWith($haystack, $needle, $case = true)
{
if ($case) {
return strcmp(substr($haystack, 0, strlen($needle)), $needle) === 0;
}
return strcasecmp(substr($haystack, 0, strlen($needle)), $needle) === 0;
}
// Tells if a string ends with a substring or not.
function endsWith($haystack, $needle, $case = true)
{
if ($case) {
return strcmp(substr($haystack, strlen($haystack) - strlen($needle)), $needle) === 0;
}
return strcasecmp(substr($haystack, strlen($haystack) - strlen($needle)), $needle) === 0;
}
/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a timestamp (Unix epoch)
(used to build the ADD_DATE attribute in Netscape-bookmarks file)
PS: I could have used strptime(), but it does not exist on Windows. I'm too kind. */
function linkdate2timestamp($linkdate)
{
$Y = $M = $D = $h = $m = $s = 0;
sscanf($linkdate, '%4d%2d%2d_%2d%2d%2d', $Y, $M, $D, $h, $m, $s);
return mktime($h, $m, $s, $M, $D, $Y);
}
/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a RFC822 date.
(used to build the pubDate attribute in RSS feed.) */
function linkdate2rfc822($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($linkdate)); // 'c' is for ISO 8601 date format.
}
/* Converts a linkdate time (YYYYMMDD_HHMMSS) of an article to a localized date format.
(used to display link date on screen)
The date format is automatically chosen according to locale/languages sniffed from browser headers (see autoLocale()). */
function linkdate2locale($linkdate)
{
if (empty($GLOBALS['config']['DATE_FORMAT'])) {
$GLOBALS['config']['DATE_FORMAT'] = '%c';
}
return strftime($GLOBALS['config']['DATE_FORMAT'], linkdate2timestamp($linkdate)); // %c is for automatic date format according to locale.
// Note that if you use a local which is not installed on your webserver,
// the date will not be displayed in the chosen locale, but probably in US notation.
}
// Parse HTTP response headers and return an associative array.
function http_parse_headers_shaarli($headers)
{
$res = array();
foreach ($headers as $header) {
$i = strpos($header, ': ');
if ($i !== false) {
$key = substr($header, 0, $i);
$value = substr($header, $i + 2, strlen($header) - $i - 2);
$res[$key] = $value;
}
}
return $res;
}
/* GET an URL.
Input: $url : url to get (http://...)
$timeout : Network timeout (will wait this many seconds for an anwser before giving up).
Output: An array. [0] = HTTP status message (eg. "HTTP/1.1 200 OK") or error message
[1] = associative array containing HTTP response headers (eg. echo getHTTP($url)[1]['Content-Type'])
[2] = data
Example: list($httpstatus,$headers,$data) = getHTTP('http://sebauvage.net/');
if (strpos($httpstatus,'200 OK')!==false)
echo 'Data type: '.htmlspecialchars($headers['Content-Type']);
else
echo 'There was an error: '.htmlspecialchars($httpstatus)
*/
function getHTTP($url, $timeout = 30)
{
try {
$options = array('http' => array('method' => 'GET', 'timeout' => $timeout, 'user_agent' => 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:23.0) Gecko/20100101 Firefox/23.0')); // Force network timeout
$context = stream_context_create($options);
$data = file_get_contents($url, false, $context, -1, 4000000); // We download at most 4 Mb from source.
if (!$data) {
return array('HTTP Error', array(), '');
}
$httpStatus = $http_response_header[0]; // eg. "HTTP/1.1 200 OK"
$responseHeaders = http_parse_headers_shaarli($http_response_header);
return array($httpStatus, $responseHeaders, $data);
} catch (Exception $e) {
// getHTTP *can* fail silentely (we don't care if the title cannot be fetched)
return array($e->getMessage(), '', '');
}
}
// Extract title from an HTML document.
// (Returns an empty string if not found.)
function html_extract_title($html)
{
return preg_match('!<title>(.*?)</title>!is', $html, $matches) ? trim(str_replace("\n", ' ', $matches[1])) : '';
}
// ------------------------------------------------------------------------------------------
// Token management for XSRF protection
// Token should be used in any form which acts on data (create,update,delete,import...).
if (!isset($_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
public function __construct()
{
$this->tpl = false;
}
private function initialize()
{
$this->tpl = new RainTPL();
$this->tpl->assign('theme', $GLOBALS['config']['THEME']);
$this->tpl->assign('newversion', checkUpdate());
$this->tpl->assign('feedurl', htmlspecialchars(indexUrl()));
$searchcrits = ''; // Search criteria
if (!empty($_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', indexUrl());
$this->tpl->assign('version', myShaarli_version);
$this->tpl->assign('scripturl', indexUrl());
$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' : $GLOBALS['title']);
return;
}
// The following assign() method is basically the same as RainTPL (except that it's lazy)
public function assign($what, $where)
{
if ($this->tpl === false) {
$this->initialize();
} // Lazy initialization
$this->tpl->assign($what, $where);
}
// Render a specific page (using a template).
// eg. pb.renderPage('picwall')
public function renderPage($page)
{
if ($this->tpl === false) {
$this->initialize();
} // Lazy initialization
$this->tpl->draw($page);
}
}
// ------------------------------------------------------------------------------------------
/* Data storage for links.
This object behaves like an associative array.
Example:
$mylinks = new linkdb();
echo $mylinks['20110826_161819']['title'];
foreach($mylinks as $link)
echo $link['title'].' at url '.$link['url'].' ; description:'.$link['description'];
Available keys:
title : Title of the link
url : URL of the link. Can be absolute or relative. Relative URLs are permalinks (eg.'?m-ukcw')
description : description of the entry
private : Is this link private ? 0=no, other value=yes
linkdate : date of the creation of this entry, in the form YYYYMMDD_HHMMSS (eg.'20110914_192317')
tags : tags attached to this entry (separated by spaces)
We implement 3 interfaces:
- ArrayAccess so that this object behaves like an associative array.
- Iterator so that this object can be used in foreach() loops.
- Countable interface so that we can do a count() on this object.
*/
class linkdb implements Iterator, Countable, ArrayAccess
{
private $links; // List of links (associative array. Key=linkdate (eg. "20110823_124546"), value= associative array (keys:title,description...)
private $urls; // List of all recorded URLs (key=url, value=linkdate) for fast reserve search (url-->linkdate)
private $keys; // List of linkdate keys (for the Iterator interface implementation)
private $position; // Position in the $this->keys array. (for the Iterator interface implementation.)
private $loggedin; // Is the used logged in ? (used to filter private links)
// Constructor:
public function __construct($isLoggedIn)
// Input : $isLoggedIn : is the used logged in ?
{
$this->loggedin = $isLoggedIn;
$this->checkdb(); // Make sure data file exists.
$this->readdb(); // Then read it.
}
// ---- Countable interface implementation
public function count()
{
return count($this->links);
}
// ---- ArrayAccess interface implementation
public function offsetSet($offset, $value)
{
if (!$this->loggedin) {
die('You are not authorized to add a link.');
}
if (empty($value['linkdate']) || empty($value['url'])) {
die('Internal Error: A link should always have a linkdate and url.');
}
if (empty($offset)) {
die('You must specify a key.');
}
$this->links[$offset] = $value;
$this->urls[$value['url']] = $offset;
}
public function offsetExists($offset)
{
return array_key_exists($offset, $this->links);
}
public function offsetUnset($offset)
{
if (!$this->loggedin) {
die('You are not authorized to delete a link.');
}
$url = $this->links[$offset]['url'];
unset($this->urls[$url]);
unset($this->links[$offset]);
}
public function offsetGet($offset)
{
return isset($this->links[$offset]) ? $this->links[$offset] : null;
}
// ---- Iterator interface implementation
public function rewind()
{
$this->keys = array_keys($this->links);
rsort($this->keys);
$this->position = 0;
} // Start over for iteration, ordered by date (latest first).
public function key()
{
return $this->keys[$this->position];
} // current key
public function current()
{
return $this->links[$this->keys[$this->position]];
} // current value
public function next()
{
++$this->position;
} // go to next item
public function valid()
{
return isset($this->keys[$this->position]);
} // Check if current position is valid.
// ---- Misc methods
private function checkdb() // Check if db directory and file exists.
{
if (!file_exists($GLOBALS['config']['DATASTORE'])) {
// Create a dummy database for example.
$this->links = array();
$link = array('title' => 'Shaarli - sebsauvage.net', 'url' => 'http://sebsauvage.net/wiki/doku.php?id=php:shaarli', 'description' => 'Welcome to Shaarli ! This is a bookmark. To edit or delete me, you must first login.', 'private' => 0, 'linkdate' => '20110914_190000', 'tags' => 'opensource software');
$this->links[$link['linkdate']] = $link;
$link = array('title' => 'My secret stuff... - Pastebin.com', 'url' => 'http://sebsauvage.net/paste/?8434b27936c09649#bR7XsXhoTiLcqCpQbmOpBi3rq2zzQUC5hBI7ZT1O3x8=', 'description' => 'SShhhh!! I\'m a private link only YOU can see. You can delete me too.', 'private' => 1, 'linkdate' => '20110914_074522', 'tags' => 'secretstuff');
$this->links[$link['linkdate']] = $link;
file_put_contents($GLOBALS['config']['DATASTORE'], PHPPREFIX.base64_encode(gzdeflate(serialize($this->links))).PHPSUFFIX); // Write database to disk
}
}
// Read database from disk to memory
private function readdb()
{
// Read data
$this->links = (file_exists($GLOBALS['config']['DATASTORE']) ? unserialize(gzinflate(base64_decode(substr(file_get_contents($GLOBALS['config']['DATASTORE']), strlen(PHPPREFIX), -strlen(PHPSUFFIX))))) : array());
// Note that gzinflate is faster than gzuncompress. See: http://www.php.net/manual/en/function.gzdeflate.php#96439
// If user is not logged in, filter private links.
if (!$this->loggedin) {
$toremove = array();
foreach ($this->links as $link) {
if ($link['private'] != 0) {
$toremove[] = $link['linkdate'];
}
}
foreach ($toremove as $linkdate) {
unset($this->links[$linkdate]);
}
}
// Keep the list of the mapping URLs-->linkdate up-to-date.
$this->urls = array();
foreach ($this->links as $link) {
$this->urls[$link['url']] = $link['linkdate'];
}
}
// Save database from memory to disk.
public function savedb()
{
if (!$this->loggedin) {
die('You are not authorized to change the database.');
}
file_put_contents($GLOBALS['config']['DATASTORE'], PHPPREFIX.base64_encode(gzdeflate(serialize($this->links))).PHPSUFFIX);
invalidateCaches();
}
// Returns the link for a given URL (if it exists). false it does not exist.
public function getLinkFromUrl($url)
{
if (isset($this->urls[$url])) {
return $this->links[$this->urls[$url]];
}
return false;
}
// Case insentitive search among links (in url, title and description). Returns filtered list of links.
// eg. print_r($mydb->filterFulltext('hollandais'));
public function filterFulltext($searchterms)
{
// FIXME: explode(' ',$searchterms) and perform a AND search.
// FIXME: accept double-quotes to search for a string "as is" ?
$filtered = array();
$s = strtolower($searchterms);
foreach ($this->links as $l) {
$found = (strpos(strtolower($l['title']), $s) !== false)
|| (strpos(strtolower($l['description']), $s) !== false)
|| (strpos(strtolower($l['url']), $s) !== false)
|| (strpos(strtolower($l['tags']), $s) !== false)
|| (!empty($l['via']) && (strpos(strtolower($l['via']), $s) !== false));
if ($found) {
$filtered[$l['linkdate']] = $l;
}
}
krsort($filtered);
return $filtered;
}
// Filter by tag.
// You can specify one or more tags (tags can be separated by space or comma).
// eg. print_r($mydb->filterTags('linux programming'));
public function filterTags($tags, $casesensitive = false)
{
$t = str_replace(',', ' ', ($casesensitive ? $tags : strtolower($tags)));
$searchtags = explode(' ', $t);
$filtered = array();
foreach ($this->links as $l) {
$linktags = explode(' ', ($casesensitive ? $l['tags'] : strtolower($l['tags'])));
if (count(array_intersect($linktags, $searchtags)) == count($searchtags)) {
$filtered[$l['linkdate']] = $l;
}
}
krsort($filtered);
return $filtered;
}
// Filter by day. Day must be in the form 'YYYYMMDD' (eg. '20120125')
// Sort order is: older articles first.
// eg. print_r($mydb->filterDay('20120125'));
public function filterDay($day)
{
$filtered = array();
foreach ($this->links as $l) {
if (startsWith($l['linkdate'], $day)) {
$filtered[$l['linkdate']] = $l;
}
}
ksort($filtered);
return $filtered;
}
// Filter by smallHash.
// Only 1 article is returned.
public function filterSmallHash($smallHash)
{
$filtered = array();
foreach ($this->links as $l) {
if ($smallHash == smallHash($l['linkdate'])) {
// Yes, this is ugly and slow
$filtered[$l['linkdate']] = $l;
return $filtered;
}
}
return $filtered;
}
// Returns the list of all tags
// Output: associative array key=tags, value=0
public function allTags()
{
$tags = array();
foreach ($this->links as $link) {
foreach (explode(' ', $link['tags']) as $tag) {
if (!empty($tag)) {
$tags[$tag] = (empty($tags[$tag]) ? 1 : $tags[$tag] + 1);
}
}
}
arsort($tags); // Sort tags by usage (most used tag first)
return $tags;
}
// Returns the list of days containing articles (oldest first)
// Output: An array containing days (in format YYYYMMDD).
public function days()
{
$linkdays = array();
foreach (array_keys($this->links) as $day) {
$linkdays[substr($day, 0, 8)] = 0;
}
$linkdays = array_keys($linkdays);
sort($linkdays);
return $linkdays;
}
}
// ------------------------------------------------------------------------------------------
// Ouput 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. eg. http://mysite.com/shaarli/?do=rss&permalinks
$usepermalinks = isset($_GET['permalinks']);
// Cache system
$query = $_SERVER['QUERY_STRING'];
$cache = new pageCache(pageUrl(), startsWith($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(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
// Optionnaly filter the results:
$linksToDisplay = array();
if (!empty($_GET['searchterm'])) {
$linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
} elseif (!empty($_GET['searchtags'])) {
$linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
} else {
$linksToDisplay = $LINKSDB;
}
$nblinksToDisplay = 50; // Number of links to display.
if (!empty($_GET['nb'])) {
// In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
$nblinksToDisplay = $_GET['nb'] == 'all' ? count($linksToDisplay) : max($_GET['nb'] + 0, 1);
}
$pageaddr = htmlspecialchars(indexUrl());
echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">';
echo '<channel><title>'.htmlspecialchars($GLOBALS['title']).'</title><link>'.$pageaddr.'</link>';
echo '<description>Shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n\n";
if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) {
echo '<!-- PubSubHubbub Discovery -->';
echo '<link rel="hub" href="'.htmlspecialchars($GLOBALS['config']['PUBSUBHUB_URL']).'" xmlns="http://www.w3.org/2005/Atom" />';
echo '<link rel="self" href="'.htmlspecialchars($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']);
$absurl = htmlspecialchars($link['url']);
if (startsWith($absurl, '?')) {
$absurl = $pageaddr.$absurl;
} // make permalink URL absolute
if ($usepermalinks === true) {
echo '<item><title>'.htmlspecialchars($link['title']).'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$guid.'</link>';
} else {
echo '<item><title>'.htmlspecialchars($link['title']).'</title><guid isPermaLink="false">'.$guid.'</guid><link>'.$absurl.'</link>';
}
if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) {
echo '<pubDate>'.htmlspecialchars($rfc822date)."</pubDate>\n";
}
if ($link['tags'] != '') {
// Adding tags to each RSS entry (as mentioned in RSS specification)
foreach (explode(' ', $link['tags']) as $tag) {
echo '<category domain="'.htmlspecialchars($pageaddr).'">'.htmlspecialchars($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 = $descriptionlink;
}
if (!empty($link['via'])) {
$via = 'Origin => <a href="'.htmlspecialchars($link['via']).'">'.htmlspecialchars(getJustDomain($link['via'])).'</a><br/>';
} else {
$via = '';
}
if ($GLOBALS['config']['ENABLE_MARKDOWN'] === true) {
$Parsedown = new Parsedown();
echo '<description><![CDATA['.$Parsedown->setMarkupEscaped(true)->setBreaksEnabled(true)->text($link['description']).$via.$descriptionlink.']]>
</description>'."\n</item>\n";
} else {
echo '<description><![CDATA['.nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description'])))).$via.$descriptionlink.']]>
</description>'."\n</item>\n";
}
++$i;
}
echo '</channel></rss><!-- Cached version of '.htmlspecialchars(pageUrl()).' -->';
$cache->cache(ob_get_contents());
ob_end_flush();
exit;
}
// ------------------------------------------------------------------------------------------
// Ouput 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. eg. http://mysite.com/shaarli/?do=atom&permalinks
$usepermalinks = isset($_GET['permalinks']);
// Cache system
$query = $_SERVER['QUERY_STRING'];
$cache = new pageCache(pageUrl(), startsWith($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:
$LINKSDB = new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
// Optionnaly filter the results:
$linksToDisplay = array();
if (!empty($_GET['searchterm'])) {
$linksToDisplay = $LINKSDB->filterFulltext($_GET['searchterm']);
} elseif (!empty($_GET['searchtags'])) {
$linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
} else {
$linksToDisplay = $LINKSDB;
}
$nblinksToDisplay = 50; // Number of links to display.
if (!empty($_GET['nb'])) {
// In URL, you can specificy the number of links. Example: nb=200 or nb=all for all links.
$nblinksToDisplay = $_GET['nb'] == 'all' ? count($linksToDisplay) : max($_GET['nb'] + 0, 1);
}
$pageaddr = htmlspecialchars(indexUrl());
$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);
$absurl = htmlspecialchars($link['url']);
if (startsWith($absurl, '?')) {
$absurl = $pageaddr.$absurl;
} // make permalink URL absolute
$entries .= '<entry><title>'.htmlspecialchars($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()) {
$entries .= '<updated>'.htmlspecialchars($iso8601date).'</updated>';
}
// Add permalink in description
$descriptionlink = htmlspecialchars('(<a href="'.$guid.'">Permalink</a>)');
if (isset($link['via']) && !empty($link['via'])) {
$via = htmlspecialchars('Origin => <a href="'.$link['via'].'">'.getJustDomain($link['via']).'</a><br/>');
} else {
$via = '';
}
// If user wants permalinks first, put the final link in description
if ($usepermalinks === true) {
$descriptionlink = htmlspecialchars('(<a href="'.$absurl.'">Link</a>)');
}
if (strlen($link['description']) > 0) {
$descriptionlink = $descriptionlink;
}
if ($GLOBALS['config']['ENABLE_MARKDOWN'] === true) {
$Parsedown = new Parsedown();
$entries .= '<content type="html">'.htmlspecialchars($Parsedown->setMarkupEscaped(true)->setBreaksEnabled(true)->text($link['description'])).' '.$via.$descriptionlink."</content>\n";
} else {
$entries .= '<content type="html">'.htmlspecialchars(nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))))).$via.$descriptionlink."</content>\n";
}
if ($link['tags'] != '') {
// Adding tags to each ATOM entry (as mentioned in ATOM specification)
foreach (explode(' ', $link['tags']) as $tag) {
$entries .= '<category scheme="'.htmlspecialchars($pageaddr, ENT_QUOTES).'" term="'.htmlspecialchars($tag, ENT_QUOTES).'" />'."\n";
}
}
$entries .= "</entry>\n";
++$i;
}
$feed = '<?xml version="1.0" encoding="UTF-8"?><feed xmlns="http://www.w3.org/2005/Atom">';
$feed .= '<title>'.htmlspecialchars($GLOBALS['title']).'</title>';
if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) {
$feed .= '<updated>'.htmlspecialchars($latestDate).'</updated>';
}
$feed .= '<link rel="self" href="'.htmlspecialchars(serverUrl().$_SERVER['REQUEST_URI']).'" />';
if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) {
$feed .= '<!-- PubSubHubbub Discovery -->';
$feed .= '<link rel="hub" href="'.htmlspecialchars($GLOBALS['config']['PUBSUBHUB_URL']).'" />';
$feed .= '<!-- End Of PubSubHubbub Discovery -->';
}
$feed .= '<author><name>'.htmlspecialchars($pageaddr).'</name><uri>'.htmlspecialchars($pageaddr).'</uri></author>';
$feed .= '<id>'.htmlspecialchars($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 '.htmlspecialchars(pageUrl()).' -->';
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'];
$cache = new pageCache(pageUrl(), startsWith($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:
$LINKSDB = new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
/* Some Shaarlies may have very few links, so we need to look
back in time (rsort()) until we have enough days ($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');
$pageaddr = htmlspecialchars(indexUrl());
echo '<?xml version="1.0" encoding="UTF-8"?><rss version="2.0">';
echo '<?xml-stylesheet type="text/css" href="http://shaarli.local/inc/shaarli.css?version=0.0.41+beta" ?>';
echo '<?xml-stylesheet type="text/css" href="http://shaarli.local/inc/user.css?version=0.0.41%20beta" ?>';
echo '<channel><title>Daily - '.htmlspecialchars($GLOBALS['title']).'</title><link>'.$pageaddr.'</link>';
echo '<description>Daily shared links</description><language>en-en</language><copyright>'.$pageaddr.'</copyright>'."\n";
foreach ($days as $day => $linkdates) {
// For each day.
$daydate = utf8_encode(strftime('%A %d, %B %Y', linkdate2timestamp($day.'_000000'))); // Full text date
$rfc822date = linkdate2rfc822($day.'_000000');
$absurl = htmlspecialchars(indexUrl().'?do=daily&day='.$day); // Absolute URL of the corresponding "Daily" page.
echo '<item><title>'.htmlspecialchars($GLOBALS['title'].' - '.$daydate).'</title><guid>'.$absurl.'</guid><link>'.$absurl.'</link>';
echo '<pubDate>'.htmlspecialchars($rfc822date).'</pubDate>';
// 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];
$l['formatedDescription'] = nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($l['description']))));
$l['thumbnail'] = thumbnail($l['url']);
$l['localdate'] = linkdate2locale($l['linkdate']);
if (startsWith($l['url'], '?')) {
$l['url'] = indexUrl().$l['url'];
} // make permalink URL absolute
$links[$linkdate] = $l;
}
// Then build the HTML for this day:
$tpl = new RainTPL();
$tpl->assign('links', $links);
$html = $tpl->draw('dailyrss', $return_string = true);
echo "\n";
echo '<description><![CDATA['.$html.']]></description>'."\n</item>\n\n";
}
echo '</channel></rss><!-- Cached version of '.htmlspecialchars(pageUrl()).' -->';
$cache->cache(ob_get_contents());
ob_end_flush();
exit;
}
// "Daily" page.
function showDaily()
{
$LINKSDB = new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
$day = Date('Ymd', strtotime('-1 day')); // Yesterday, in format YYYYMMDD.
if (isset($_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];
}
}
$linksToDisplay = $LINKSDB->filterDay($day);
// 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'] = nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))));
$linksToDisplay[$key]['thumbnail'] = thumbnail($link['url']);
}
/* 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;
}
$PAGE = new pageBuilder();
$PAGE->assign('linksToDisplay', $linksToDisplay);
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('col1', $columns[0]);
$PAGE->assign('col1', $columns[0]);
$PAGE->assign('col2', $columns[1]);
$PAGE->assign('col3', $columns[2]);
$PAGE->assign('day', utf8_encode(strftime('%A %d, %B %Y', linkdate2timestamp($day.'_000000'))));
$PAGE->assign('previousday', $previousday);
$PAGE->assign('nextday', $nextday);
$PAGE->renderPage('daily');
exit;
}
// ------------------------------------------------------------------------------------------
// Render HTML page (according to URL parameters and user rights)
function renderPage()
{
$LINKSDB = new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
// -------- Display login form.
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=login')) {
if ($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 = new pageBuilder();
$PAGE->assign('token', $token);
$PAGE->assign('returnurl', (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : ''));
$PAGE->renderPage('loginform');
exit;
}
// -------- User wants to logout.
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=logout')) {
invalidateCaches();
logout();
header('Location: ?');
exit;
}
// -------- Picture wall
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=picwall')) {
// Optionnaly filter the results:
$links = array();
if (!empty($_GET['searchterm'])) {
$links = $LINKSDB->filterFulltext($_GET['searchterm']);
} elseif (!empty($_GET['searchtags'])) {
$links = $LINKSDB->filterTags(trim($_GET['searchtags']));
} else {
$links = $LINKSDB;
}
$body = '';
$linksToDisplay = array();
// Get only links which have a thumbnail.
foreach ($links as $link) {
$permalink = '?'.htmlspecialchars(smallhash($link['linkdate']), ENT_QUOTES);
$thumb = lazyThumbnail($link['url'], $permalink);
if ($thumb != '') {
// Only output links which have a thumbnail.
$link['thumbnail'] = $thumb; // Thumbnail HTML code.
$link['permalink'] = $permalink;
$linksToDisplay[] = $link; // Add to array.
}
}
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('linksToDisplay', $linksToDisplay);
$PAGE->renderPage('picwall');
exit;
}
// -------- Tag cloud
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=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);
}
$linkCount = count($LINKSDB);
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, 5) / log($maxcount, 3) * (4.8 - 0.8) + 0.8);
}
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('tags', $tagList);
$PAGE->renderPage('tagcloud');
exit;
}
// Display openseach plugin (XML)
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=opensearch')) {
header('Content-Type: application/xml; charset=utf-8');
$PAGE = new pageBuilder();
$PAGE->assign('serverurl', $GLOBALS['title']);
$PAGE->assign('pagetitle', $GLOBALS['title']);
$PAGE->renderPage('opensearch');
exit;
}
// -------- User clicks on a tag in a link: The tag is added to the list of searched tags (searchtags=...)
if (isset($_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);
$params['searchtags'] = (empty($params['searchtags']) ? trim($_GET['addtag']) : trim($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), $params);
if (isset($params['searchtags'])) {
$tags = explode(' ', $params['searchtags']);
$tags = array_diff($tags, array($_GET['removetag'])); // Remove value from array $tags.
if (count($tags) == 0) {
unset($params['searchtags']);
} else {
$params['searchtags'] = implode(' ', $tags);
}
unset($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']));
}
// Make sure the referer is from Shaarli itself.
$referer = '?';
if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_HOST), $_SERVER['HTTP_HOST']) == 0) {
$referer = $_SERVER['HTTP_REFERER'];
}
header('Location: '.$referer);
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
}
// Make sure the referer is from Shaarli itself.
$referer = '?';
if (!empty($_SERVER['HTTP_REFERER']) && strcmp(parse_url($_SERVER['HTTP_REFERER'], PHP_URL_HOST), $_SERVER['HTTP_HOST']) == 0) {
$referer = $_SERVER['HTTP_REFERER'];
}
header('Location: '.$referer);
exit;
}
// -------- Handle other actions allowed for non-logged in users:
if (!isLoggedIn()) {
// User tries to post new link but is not loggedin:
// 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($_GET['source']) ? '&source='.urlencode($_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;
}
$PAGE = new pageBuilder();
buildLinkList($PAGE, $LINKSDB); // Compute list of links to display
$PAGE->renderPage('linklist');
exit; // Never remove this one ! All operations below are reserved for logged in user.
}
// -------- All other functions are reserved for the registered user:
// -------- Display the Tools menu if requested (import/export/bookmarklet...)
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=tools')) {
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('pageabsaddr', indexUrl());
$PAGE->renderPage('tools');
exit;
}
// -------- User wants to change his/her password.
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=changepasswd')) {
if ($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']);
writeConfig();
echo '<script>alert("Your password has been changed.");document.location=\'?do=tools\';</script>';
exit;
} else {
// show the change password form.
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('token', getToken());
$PAGE->renderPage('changepassword');
exit;
}
}
// -------- User wants to change configuration
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=configure')) {
if (!empty($_POST['title'])) {
if (!tokenOk($_POST['token'])) {
die('Wrong token.');
} // Go away !
$tz = 'UTC';
if (!empty($_POST['continent']) && !empty($_POST['city'])) {
if (isTZvalid($_POST['continent'], $_POST['city'])) {
$tz = $_POST['continent'].'/'.$_POST['city'];
}
}
$GLOBALS['timezone'] = $tz;
$GLOBALS['title'] = htmlentities(strip_tags($_POST['title']));
$GLOBALS['titleLink'] = htmlentities(strip_tags($_POST['titleLink']));
$GLOBALS['redirector'] = $_POST['redirector'];
$GLOBALS['disablesessionprotection'] = !empty($_POST['disablesessionprotection']);
$GLOBALS['disablejquery'] = !empty($_POST['disablejquery']);
$GLOBALS['privateLinkByDefault'] = !empty($_POST['privateLinkByDefault']);
$GLOBALS['config']['ENABLE_RSS_PERMALINKS'] = !empty($_POST['enableRssPermalinks']);
$GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
$GLOBALS['config']['ENABLE_MARKDOWN'] = !empty($_POST['enableMarkdown']);
$GLOBALS['config']['HIDE_TIMESTAMPS'] = !empty($_POST['hideTimestamps']);
$GLOBALS['config']['BAN_AFTER'] = (int) $_POST['banAfter'];
$GLOBALS['config']['BAN_DURATION'] = (int) $_POST['banDuration'];
$GLOBALS['config']['THEME'] = htmlentities(strip_tags($_POST['theme']));
$GLOBALS['config']['LINKS_PER_PAGE'] = (int) $_POST['linkPerPage'];
$GLOBALS['config']['ENABLE_THUMBNAILS'] = !empty($_POST['enableThumbnails']);
$GLOBALS['config']['ENABLE_FAVICON'] = !empty($_POST['enableFavicon']);
$GLOBALS['config']['ENABLE_LOCALCACHE'] = !empty($_POST['enableCache']);
$GLOBALS['config']['externalThumbshot'] = $_POST['externalThumbshot'];
$GLOBALS['config']['contactLink'] = $_POST['contactLink'];
$_SESSION['LINKS_PER_PAGE'] = (int) $_POST['linkPerPage'];
$GLOBALS['config']['DATE_FORMAT'] = strip_tags($_POST['dateFormat']);
$GLOBALS['config']['WALLABAG_URL'] = $_POST['wallabagUrl'];
$GLOBALS['config']['WALLABAG_VERSION'] = (int)$_POST['wallabagVersion'];
writeConfig();
echo '<script>alert("Configuration was saved.");document.location=\'?do=configure\';</script>';
exit;
} else {
// Show the configuration form.
$PAGE = new pageBuilder();
$PAGE->assign('themes', getAllTheme());
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('token', getToken());
$PAGE->assign('title', htmlspecialchars(empty($GLOBALS['title']) ? '' : $GLOBALS['title'], ENT_QUOTES));
$PAGE->assign('redirector', htmlspecialchars(empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector'], ENT_QUOTES));
list($timezone_form, $timezone_js) = templateTZform($GLOBALS['timezone']);
$PAGE->assign('timezone_form', $timezone_form); // FIXME: put entire tz form generation in template ?
$PAGE->assign('timezone_js', $timezone_js);
if ($_GET['config'] === 'myshaarli') {
raintpl::$tpl_dir = 'tpl/myShaarli/';
$PAGE->renderPage('configure');
} else {
$PAGE->renderPage('configure');
}
exit;
}
}
// -------- User wants to rename a tag or delete it
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=changetag')) {
if (empty($_POST['fromtag']) && empty($_POST['tagToDelete'])) {
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('token', getToken());
$PAGE->renderPage('changetag');
exit;
}
if (!tokenOk($_POST['token'])) {
die('Wrong token.');
}
// Delete a tag:
if (!empty($_POST['deletetag']) && !empty($_POST['tagToDelete'])) {
$needle = trim($_POST['tagToDelete']);
$linksToAlter = $LINKSDB->filterTags($needle, true); // true for case-sensitive tag search.
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;
}
$LINKSDB->savedb(); // save to disk
echo '<script>alert("Tag was removed from '.count($linksToAlter).' links.");document.location=\'?\';</script>';
exit;
}
// Rename a tag:
if (!empty($_POST['renametag']) && !empty($_POST['fromtag']) && !empty($_POST['totag'])) {
$needle = trim($_POST['fromtag']);
$linksToAlter = $LINKSDB->filterTags($needle, true); // true for case-sensitive tag search.
foreach ($linksToAlter as $key => $value) {
$tags = explode(' ', trim($value['tags']));
$tags[array_search($needle, $tags)] = trim($_POST['totag']); // Remplace tags value.
$value['tags'] = trim(implode(' ', $tags));
$LINKSDB[$key] = $value;
}
$LINKSDB->savedb(); // save to disk
echo '<script>alert("Tag was renamed in '.count($linksToAlter).' links.");document.location=\'?searchtags='.urlencode($_POST['totag']).'\';</script>';
exit;
}
}
// -------- User wants to add a link without using the bookmarklet: show form.
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=addlink')) {
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($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.
$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(',', ' ', $tags), 'via' => trim($_POST['lf_via']), );
if ($link['title'] == '') {
$link['title'] = $link['url'];
} // If title is empty, use the URL as title.
$LINKSDB[$linkdate] = $link;
$LINKSDB->savedb(); // save to disk
pubsubhub();
// If we are called from the bookmarklet, we must close the popup:
if (isset($_GET['source']) && ($_GET['source'] == 'bookmarklet' || $_GET['source'] == 'firefoxsocialapi')) {
echo '<script>self.close();</script>';
exit;
}
$returnurl = (isset($_POST['returnurl']) ? $_POST['returnurl'] : '?');
$returnurl .= '#'.smallHash($linkdate); // Scroll to the link which has been edited.
if (strstr($returnurl, 'do=addlink')) {
$returnurl = '?';
} //if we come from ?do=addlink, set returnurl to homepage instead
header('Location: '.$returnurl); // 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.
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 = $_POST['lf_linkdate'];
unset($LINKSDB[$linkdate]);
$LINKSDB->savedb(); // save to disk
// If we are called from the bookmarklet, we must close the popup:
if (isset($_GET['source']) && $_GET['source'] == 'bookmarklet') {
echo '<script>self.close();</script>';
exit;
}
header('Location: ?'); // After deleting the link, redirect to the home page.
exit;
}
// -------- User clicked the "EDIT" button on a link: Display link edit form.
if (isset($_GET['edit_link'])) {
$link = $LINKSDB[$_GET['edit_link']]; // Read database
if (!$link) {
header('Location: ?');
exit;
} // Link not found in database.
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('link', $link);
$PAGE->assign('link_is_new', false);
$PAGE->assign('token', getToken()); // XSRF protection.
$PAGE->assign('http_referer', (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : ''));
$PAGE->renderPage('editlink');
exit;
}
// -------- User want to post a new link: Display link edit form.
if (isset($_GET['post'])) {
$url = $_GET['post'];
// We remove the annoying parameters added by FeedBurner and GoogleFeedProxy (?utm_source=...)
$i = stripos($url, '&utm_source=');
if ($i !== false) {
$url = substr($url, 0, $i);
}
$i = stripos($url, '?utm_source=');
if ($i !== false) {
$url = substr($url, 0, $i);
}
$i = stripos($url, '#xtor=RSS-');
if ($i !== false) {
$url = substr($url, 0, $i);
}
$link_is_new = false;
$link = $LINKSDB->getLinkFromUrl($url); // Check if URL is not already in database (in this case, we will edit the existing link)
if (!$link) {
$link_is_new = true; // This is a new link
$linkdate = strval(date('Ymd_His'));
// Get title if it was provided in URL (by the bookmarklet).
$title = empty($_GET['title']) ? '' : htmlspecialchars($_GET['title']);
// Get description if it was provided in URL (by the bookmarklet). [Bronco added that]
$description = (empty($_GET['description']) ? '' : htmlspecialchars($_GET['description']));
$tags = (empty($_GET['tags']) ? '' : htmlspecialchars($_GET['tags']));
$via = (empty($_GET['via']) ? '' : htmlspecialchars($_GET['via']));
$private = (!empty($_GET['private']) && $_GET['private'] === '1' ? 1 : 0);
if (($url != '') && parse_url($url, PHP_URL_SCHEME) == '') {
$url = 'http://'.$url;
}
// If this is an HTTP link, we try go get the page to extact the title (otherwise we will to straight to the edit form.)
if (empty($title) && parse_url($url, PHP_URL_SCHEME) == 'http') {
list($status, $headers, $data) = getHTTP($url, 4); // Short timeout to keep the application responsive.
// FIXME: Decode charset according to specified in either 1) HTTP response headers or 2) <head> in html
if (strpos($status, '200 OK') !== false) {
// Look for charset in html header.
preg_match('#<meta .*charset=.*>#Usi', $data, $meta);
// If found, extract encoding.
if (!empty($meta[0])) {
// Get encoding specified in header.
preg_match('#charset="?(.*)"#si', $meta[0], $enc);
// If charset not found, use utf-8.
$html_charset = (!empty($enc[1])) ? strtolower($enc[1]) : 'utf-8';
} else {
$html_charset = 'utf-8';
}
// Extract title
$title = html_extract_title($data);
if (!empty($title)) {
// Re-encode title in utf-8 if necessary.
$title = ($html_charset == 'iso-8859-1') ? utf8_encode($title) : $title;
}
}
}
if ($url == '') {
// In case of empty URL, this is just a text (with a link that points to itself)
$url = '?'.smallHash($linkdate);
$title = 'Note: ';
$tags .= 'note ';
}
$link = array('linkdate' => $linkdate, 'title' => $title, 'url' => $url, 'description' => $description, 'tags' => $tags, 'via' => $via, 'private' => $private);
}
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('link', $link);
$PAGE->assign('link_is_new', $link_is_new);
$PAGE->assign('token', getToken()); // XSRF protection.
$PAGE->assign('http_referer', (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : ''));
$PAGE->renderPage('editlink');
exit;
}
// -------- Export as Netscape Bookmarks HTML file.
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=export')) {
if (empty($_GET['what'])) {
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($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' && $link['private'] == 0)) {
echo '<DT><A HREF="'.htmlspecialchars($link['url']).'" ADD_DATE="'.linkdate2timestamp($link['linkdate']).'" PRIVATE="'.$link['private'].'"';
if ($link['tags'] != '') {
echo ' TAGS="'.htmlspecialchars(str_replace(' ', ',', $link['tags'])).'"';
}
echo '>'.htmlspecialchars($link['title'])."</A>\n";
if ($link['description'] != '') {
echo '<DD>'.htmlspecialchars($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']) ? '?' : $_SERVER['HTTP_REFERER']);
echo '<script>alert("The file you are trying to upload is probably bigger than what this webserver can accept ('.getMaxFileSize().' bytes). Please upload in smaller chunks.");document.location=\''.htmlspecialchars($returnurl).'\';</script>';
exit;
}
if (!tokenOk($_POST['token'])) {
die('Wrong token.');
}
importFile();
exit;
}
// -------- Show upload/import dialog:
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=import')) {
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('token', getToken());
$PAGE->assign('maxfilesize', getMaxFileSize());
$PAGE->renderPage('import');
exit;
}
// -------- Otherwise, simply display search form and links:
$PAGE = new pageBuilder();
$PAGE->assign('linkcount', count($LINKSDB));
buildLinkList($PAGE, $LINKSDB); // Compute list of links to display
$PAGE->renderPage('linklist');
exit;
}
// -----------------------------------------------------------------------------------------------
// Process the import file form.
function importFile()
{
if (!(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI'])) {
die('Not allowed.');
}
$LINKSDB = new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
$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;
}
}
}
}
}
$LINKSDB->savedb();
echo '<script>alert("File '.json_encode($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
$linksToDisplay = array();
$search_type = '';
$search_crits = '';
if (isset($_GET['searchterm'])) {
// Fulltext search
$linksToDisplay = $LINKSDB->filterFulltext(trim($_GET['searchterm']));
$search_crits = htmlspecialchars(trim($_GET['searchterm']));
$search_type = 'fulltext';
} elseif (isset($_GET['searchtags'])) {
// Search by tag
$linksToDisplay = $LINKSDB->filterTags(trim($_GET['searchtags']));
$search_crits = explode(' ', trim($_GET['searchtags']));
$search_type = 'tags';
} elseif (isset($_SERVER['QUERY_STRING']) && preg_match('/[a-zA-Z0-9-_@]{6}(&.+?)?/', $_SERVER['QUERY_STRING'])) {
// Detect smallHashes in URL
$linksToDisplay = $LINKSDB->filterSmallHash(substr(trim($_SERVER['QUERY_STRING'], '/'), 0, 6));
if (count($linksToDisplay) == 0) {
header($_SERVER['SERVER_PROTOCOL'].' 404 Not Found');
echo '<h1>404 Not found.</h1>Oh crap. The link you are trying to reach does not exist or has been deleted.';
echo '<br>You would mind <a href="?">clicking here</a> ?';
exit;
}
$search_type = 'permalink';
} else {
$linksToDisplay = $LINKSDB;
} // otherwise, display without filtering.
// Option: Show only private links
if (!empty($_SESSION['privateonly'])) {
$tmp = array();
foreach ($linksToDisplay as $linkdate => $link) {
if ($link['private'] != 0) {
$tmp[$linkdate] = $link;
}
}
$linksToDisplay = $tmp;
}
// ---- Handle paging.
/* Can someone explain to me why you get the following error when using array_keys() on an object which implements the interface ArrayAccess ???
"Warning: array_keys() expects parameter 1 to be array, object given in ... "
If my class implements ArrayAccess, why won't array_keys() accept it ? ( $keys=array_keys($linksToDisplay); )
*/
$keys = array();
foreach ($linksToDisplay as $key => $value) {
$keys[] = $key;
} // Stupid and ugly. Thanks php.
// If it's a permalink, we change on-the-fly the title of the page.
if (!empty($search_type) && $search_type == 'permalink') {
$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);
$i = ($page - 1) * $_SESSION['LINKS_PER_PAGE']; // Start index.
$end = $i + $_SESSION['LINKS_PER_PAGE'];
$linkDisp = array(); // Links to display
while ($i < $end && $i < count($keys)) {
$link = $linksToDisplay[$keys[$i]];
if ($GLOBALS['config']['ENABLE_MARKDOWN'] === true) {
$Parsedown = new Parsedown();
$link['description'] = $Parsedown->setMarkupEscaped(true)->setBreaksEnabled(true)->text($link['description']);
} else {
$link['description'] = nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))));
}
$title = $link['title'];
$classLi = $i % 2 != 0 ? '' : 'publicLinkHightLight';
$link['class'] = ($link['private'] == 0 ? $classLi : 'private');
$link['localdate'] = linkdate2locale($link['linkdate']);
$taglist = explode(' ', $link['tags']);
uasort($taglist, 'strcasecmp');
$link['taglist'] = $taglist;
if (!empty($link['via'])) {
$link['via'] = htmlspecialchars($link['via']);
}
$linkDisp[$keys[$i]] = $link;
++$i;
}
// Compute paging navigation
$searchterm = (empty($_GET['searchterm']) ? '' : '&searchterm='.$_GET['searchterm']);
$searchtags = (empty($_GET['searchtags']) ? '' : '&searchtags='.$_GET['searchtags']);
$paging = '';
$previous_page_url = '';
if ($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.
$PAGE->assign('linkcount', count($LINKSDB));
$PAGE->assign('previous_page_url', $previous_page_url);
$PAGE->assign('next_page_url', $next_page_url);
$PAGE->assign('page_current', $page);
$PAGE->assign('page_max', $pagecount);
if (!empty($GLOBALS['pagetitle']) && count($linkDisp) == 1) {
$PAGE->assign('pagetitle', $GLOBALS['pagetitle']);
}
$PAGE->assign('result_count', count($linksToDisplay));
$PAGE->assign('search_type', $search_type);
$PAGE->assign('search_crits', $search_crits);
$PAGE->assign('redirector', empty($GLOBALS['redirector']) ? '' : $GLOBALS['redirector']); // optional redirector URL
$PAGE->assign('token', $token);
$PAGE->assign('links', $linkDisp);
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.
// (eg. 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($path, '/a/') && empty($GLOBALS['config']['externalThumbshot'])) {
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' => $href, 'width' => '120', 'style' => 'height:auto;', 'alt' => 'imageshack.us thumbnail', );
}
}
if (!empty($GLOBALS['config']['externalThumbshot']) && $GLOBALS['config']['ENABLE_THUMBNAILS'] !== false) {
if (strlen($url) <= 7) {
$url = serverUrl().'/'.$url;
}
$thumburl = $GLOBALS['config']['externalThumbshot'].urlencode($url);
return array('src' => $thumburl, 'href' => $href, 'width' => '120', 'style' => 'height:auto;', 'alt' => 'Custom Thumbshot');
}
// Some other hosts are SLOW AS HELL and usually require an extra HTTP request to get the thumbnail URL.
// So we deport the thumbnail generation in order not to slow down page generation
// (and we also cache the thumbnail)
if (!$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, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
return array('src' => indexUrl().'?do=genthumbnail&hmac='.htmlspecialchars($sign).'&url='.rawurlencode($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, $GLOBALS['salt']); // We use the salt to sign data (it's random, secret, and specific to each installation)
return array('src' => indexUrl().'?do=genthumbnail&hmac='.htmlspecialchars($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.
$html = '<a href="'.htmlspecialchars($t['href']).'"><img src="'.htmlspecialchars($t['src']).'"';
if (!empty($t['width'])) {
$html .= ' width="'.htmlspecialchars($t['width']).'"';
}
if (!empty($t['height'])) {
$html .= ' height="'.htmlspecialchars($t['height']).'"';
}
if (!empty($t['style'])) {
$html .= ' style="'.htmlspecialchars($t['style']).'"';
}
if (!empty($t['alt'])) {
$html .= ' alt="'.htmlspecialchars($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.
$html = '<a href="'.htmlspecialchars($t['href']).'">';
// Lazy image (only loaded by javascript when in the viewport).
if (!empty($GLOBALS['disablejquery'])) { // (except if jQuery is disabled)
$html .= '<img class="lazyimage" src="'.htmlspecialchars($t['src']).'"';
} else {
$html .= '<img class="b-lazy" src="#" data-original="'.htmlspecialchars($t['src']).'" data-src="'.htmlspecialchars($t['src']).'"';
}
if (!empty($t['width'])) {
$html .= ' width="'.htmlspecialchars($t['width']).'"';
}
if (!empty($t['height'])) {
$html .= ' height="'.htmlspecialchars($t['height']).'"';
}
if (!empty($t['style'])) {
$html .= ' style="'.htmlspecialchars($t['style']).'"';
}
if (!empty($t['alt'])) {
$html .= ' alt="'.htmlspecialchars($t['alt']).'"';
}
$html .= '>';
// No-javascript fallback.
$html .= '<noscript><img src="'.htmlspecialchars($t['src']).'"';
if (!empty($t['width'])) {
$html .= ' width="'.htmlspecialchars($t['width']).'"';
}
if (!empty($t['height'])) {
$html .= ' height="'.htmlspecialchars($t['height']).'"';
}
if (!empty($t['style'])) {
$html .= ' style="'.htmlspecialchars($t['style']).'"';
}
if (!empty($t['alt'])) {
$html .= ' alt="'.htmlspecialchars($t['alt']).'"';
}
$html .= '></noscript></a>';
return $html;
}
function returnFavicon($url)
{
if (!$GLOBALS['config']['ENABLE_FAVICON']) {
return;
}
$faviconHash = md5($url);
$path = substr($faviconHash, 0, 2).'/'.substr($faviconHash, 2, 2);
$faviconPath = $GLOBALS['config']['CACHEDIR'].'/'.$path.'/'.$faviconHash.'.ico';
if ($GLOBALS['config']['ENABLE_LOCALCACHE'] === true && file_exists($faviconPath)) {
$content = file_get_contents($faviconPath);
return '<img class="favicon" alt="favicon" src="data:image/ico;base64,'.base64_encode($content).'"/>';
}
if (file_exists($GLOBALS['config']['CACHEDIR'].'/'.$path.'/'.$faviconHash)) {
return;
}
require_once 'inc/DataAccess.php';
require_once 'inc/Favicon.php';
$favicon = new \Favicon\Favicon();
$favicon->cache(array('dir' => 'cache'));
$urlOfFavicon = $favicon->get($url);
if (!$urlOfFavicon) {
if ($GLOBALS['config']['ENABLE_LOCALCACHE'] === true) {
mkdir($GLOBALS['config']['CACHEDIR'].'/'.$path, 0777, true);
touch($GLOBALS['config']['CACHEDIR'].'/'.$path.'/'.$faviconHash);
return;
} else {
return;
}
}
if ($GLOBALS['config']['ENABLE_LOCALCACHE'] === true && !is_dir($GLOBALS['config']['CACHEDIR'].'/'.$path.'/')) {
mkdir($GLOBALS['config']['CACHEDIR'].'/'.$path, 0777, true);
}
$content = file_get_contents($urlOfFavicon);
if ($GLOBALS['config']['ENABLE_LOCALCACHE'] === true) {
file_put_contents($faviconPath, $content);
}
return '<img class="favicon" alt="favicon" src="data:image/ico;base64,'.base64_encode($content).'"/>';
}
// -----------------------------------------------------------------------------------------------
// 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']) || $_SESSION['session_tested'] != 'Working')) { // Step 2: Check if data in session is correct.
echo '<pre>Sessions do not seem to work correctly on your server.<br>';
echo 'Make sure the variable session.save_path is set correctly in your php config, and that you have write access to it.<br>';
echo 'It currently points to '.session_save_path().'<br><br><a href="?">Click to try again.</a></pre>';
die;
}
if (!isset($_SESSION['session_tested'])) { // Step 1 : Try to store data in session and reload page.
$_SESSION['session_tested'] = 'Working'; // Try to set a variable in session.
header('Location: '.indexUrl().'?test_session'); // Redirect to check stored data.
}
if (isset($_GET['test_session'])) { // Step 3: Sessions are ok. Remove test parameter from URL.
header('Location: '.indexUrl());
}
if (!empty($_POST['setlogin']) && !empty($_POST['setpassword'])) {
$tz = 'UTC';
if (!empty($_POST['continent']) && !empty($_POST['city'])) {
if (isTZvalid($_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 '.htmlspecialchars(indexUrl()) : $_POST['title']);
$GLOBALS['config']['ENABLE_UPDATECHECK'] = !empty($_POST['updateCheck']);
writeConfig();
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) = templateTZform();
$timezone_html = '';
if ($timezone_form != '') {
$timezone_html = '<tr><td valign="top"><b>Timezone:</b></td><td>'.$timezone_form.'</td></tr>';
}
$PAGE = new pageBuilder();
$PAGE->assign('timezone_html', $timezone_html);
$PAGE->assign('timezone_js', $timezone_js);
$PAGE->renderPage('install');
exit;
}
// Generates the timezone selection form and javascript.
// Input: (optional) current timezone (can be 'UTC/UTC'). It will be pre-selected.
// Output: array(html,js)
// Example: list($htmlform,$js) = templateTZform('Europe/Paris'); // Europe/Paris pre-selected.
// Returns array('','') if server does not support timezones list. (eg. php 5.1 on free.fr)
function templateTZform($ptz = false)
{
if (function_exists('timezone_identifiers_list')) {
// because of old php version (5.1) which can be found on free.fr
// Try to split the provided timezone.
if ($ptz == false) {
$l = timezone_identifiers_list();
$ptz = $l[0];
}
$spos = strpos($ptz, '/');
$pcontinent = substr($ptz, 0, $spos);
$pcity = substr($ptz, $spos + 1);
// Display config form:
$timezone_form = '';
$timezone_js = '';
// The list is in the forme "Europe/Paris", "America/Argentina/Buenos_Aires"...
// We split the list in continents/cities.
$continents = array();
$cities = array();
foreach (timezone_identifiers_list() as $tz) {
if ($tz == 'UTC') {
$tz = 'UTC/UTC';
}
$spos = strpos($tz, '/');
if ($spos !== false) {
$continent = substr($tz, 0, $spos);
$city = substr($tz, $spos + 1);
$continents[$continent] = 1;
if (!isset($cities[$continent])) {
$cities[$continent] = '';
}
$cities[$continent] .= '<option value="'.$city.'"'.($pcity == $city ? 'selected' : '').'>'.$city.'</option>';
}
}
$continents_html = '';
$continents = array_keys($continents);
foreach ($continents as $continent) {
$continents_html .= '<option value="'.$continent.'"'.($pcontinent == $continent ? 'selected' : '').'>'.$continent.'</option>';
}
$cities_html = $cities[$pcontinent];
$timezone_form = "Continent: <select name=\"continent\" id=\"continent\" onChange=\"onChangecontinent();\">${continents_html}</select>";
$timezone_form .= "&nbsp;&nbsp;&nbsp;&nbsp;City: <select name=\"city\" id=\"city\">${cities[$pcontinent]}</select><br />";
$timezone_js = '<script>';
$timezone_js .= 'function onChangecontinent(){document.getElementById("city").innerHTML = citiescontinent[document.getElementById("continent").value];}';
$timezone_js .= 'var citiescontinent = '.json_encode($cities).';';
$timezone_js .= '</script>';
return array($timezone_form, $timezone_js);
}
return array('', '');
}
// Tells if a timezone is valid or not.
// If not valid, returns false.
// If system does not support timezone list, returns false.
function isTZvalid($continent, $city)
{
$tz = $continent.'/'.$city;
if (function_exists('timezone_identifiers_list')) {
// because of old php version (5.1) which can be found on free.fr
if (in_array($tz, timezone_identifiers_list())) { // it's a valid timezone ?
return true;
}
}
return false;
}
// Webservices (for use with jQuery/jQueryUI)
// eg. index.php?ws=tags&term=minecr
function processWS()
{
if (empty($_GET['ws']) || empty($_GET['term'])) {
return;
}
$term = $_GET['term'];
$LINKSDB = new linkdb(isLoggedIn() || $GLOBALS['config']['OPEN_SHAARLI']); // Read links from database (and filter private links if used it not logged in).
header('Content-Type: application/json; charset=utf-8');
// Search in tags (case insentitive, cumulative search)
if ($_GET['ws'] == 'tags') {
$tags = explode(' ', str_replace(',', ' ', $term));
$last = array_pop($tags); // Get the last term ("a b c d" ==> "a b c", "d")
$addtags = '';
if ($tags) {
$addtags = implode(' ', $tags).' ';
} // We will pre-pend previous tags
$suggested = array();
/* To speed up things, we store list of tags in session */
if (empty($_SESSION['tags'])) {
$_SESSION['tags'] = $LINKSDB->allTags();
}
foreach ($_SESSION['tags'] as $key => $value) {
if (startsWith($key, $last, $case = false) && !in_array($key, $tags)) {
$suggested[$addtags.$key.' '] = 0;
}
}
echo json_encode(array_keys($suggested));
exit;
}
// Search a single tag (case sentitive, single tag search)
if ($_GET['ws'] == 'singletag') {
/* To speed up things, we store list of tags in session */
if (empty($_SESSION['tags'])) {
$_SESSION['tags'] = $LINKSDB->allTags();
}
foreach ($_SESSION['tags'] as $key => $value) {
if (startsWith($key, $term, $case = true)) {
$suggested[$key] = 0;
}
}
echo json_encode(array_keys($suggested));
exit;
}
}
function getAllTheme()
{
$allTheme = glob('tpl/*', GLOB_ONLYDIR);
foreach ($allTheme as $value) {
$themes[] = str_replace('tpl/', '', $value);
}
return $themes;
}
// Re-write configuration file according to globals.
// Requires some $GLOBALS to be set (login,hash,salt,title).
// If the config file cannot be saved, an error message is dislayed and the user is redirected to "Tools" menu.
// (otherwise, the function simply returns.)
function writeConfig()
{
if (is_file($GLOBALS['config']['CONFIG_FILE']) && !isLoggedIn()) {
die('You are not authorized to alter config.');
} // Only logged in user can alter config.
$config = "<?php\n";
$config .= '$GLOBALS[\'login\']='.var_export($GLOBALS['login'], true).';'."\n";
$config .= '$GLOBALS[\'hash\'] = '.var_export($GLOBALS['hash'], true).';'."\n";
$config .= '$GLOBALS[\'salt\']='.var_export($GLOBALS['salt'], true).';'."\n";
$config .= '$GLOBALS[\'timezone\'] = '.var_export($GLOBALS['timezone'], true).';'."\n";
$config .= 'date_default_timezone_set('.var_export($GLOBALS['timezone'], true).');'."\n";
$config .= '$GLOBALS[\'title\']='.var_export($GLOBALS['title'], true).';'."\n";
$config .= '$GLOBALS[\'titleLink\'] = '.var_export($GLOBALS['titleLink'], true).';'."\n";
$config .= '$GLOBALS[\'redirector\'] = '.var_export($GLOBALS['redirector'], true).';'."\n";
$config .= '$GLOBALS[\'disablesessionprotection\'] = '.var_export($GLOBALS['disablesessionprotection'], true).';'."\n";
$config .= '$GLOBALS[\'disablejquery\'] = '.var_export($GLOBALS['disablejquery'], true).';'."\n";
$config .= '$GLOBALS[\'privateLinkByDefault\'] = '.var_export($GLOBALS['privateLinkByDefault'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'ENABLE_RSS_PERMALINKS\'] = '.var_export($GLOBALS['config']['ENABLE_RSS_PERMALINKS'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'ENABLE_UPDATECHECK\'] = '.var_export($GLOBALS['config']['ENABLE_UPDATECHECK'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'ENABLE_MARKDOWN\'] = '.var_export($GLOBALS['config']['ENABLE_MARKDOWN'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'BAN_AFTER\'] = '.var_export($GLOBALS['config']['BAN_AFTER'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'BAN_DURATION\'] = '.var_export($GLOBALS['config']['BAN_DURATION'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'THEME\'] = '.var_export($GLOBALS['config']['THEME'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'LINKS_PER_PAGE\'] = '.var_export($GLOBALS['config']['LINKS_PER_PAGE'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'HIDE_TIMESTAMPS\'] = '.var_export($GLOBALS['config']['HIDE_TIMESTAMPS'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'ENABLE_THUMBNAILS\'] = '.var_export($GLOBALS['config']['ENABLE_THUMBNAILS'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'ENABLE_FAVICON\'] = '.var_export($GLOBALS['config']['ENABLE_FAVICON'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'ENABLE_LOCALCACHE\'] = '.var_export($GLOBALS['config']['ENABLE_LOCALCACHE'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'externalThumbshot\'] = '.var_export($GLOBALS['config']['externalThumbshot'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'contactLink\'] = '.var_export($GLOBALS['config']['contactLink'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'DATE_FORMAT\'] = '.var_export($GLOBALS['config']['DATE_FORMAT'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'WALLABAG_URL\'] = '.var_export($GLOBALS['config']['WALLABAG_URL'], true).';'."\n";
$config .= '$GLOBALS[\'config\'][\'WALLABAG_VERSION\'] = '.var_export($GLOBALS['config']['WALLABAG_VERSION'], true).';'."\n";
if (!file_put_contents($GLOBALS['config']['CONFIG_FILE'],$config) || strcmp(file_get_contents($GLOBALS['config']['CONFIG_FILE']),$config)!=0)
{
echo '<script>alert("Shaarli could not create the config file. Please make sure Shaarli has the right to write in the folder is it installed in.");document.location=\'?\';</script>';
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 (eg. 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 (eg. 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. eg. 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 = $matches[1].'m.jpg';
}
} else {
// this is a flickr page (html)
list($httpstatus, $headers, $data) = getHTTP($url, 20); // Get the flickr html page.
if (strpos($httpstatus, '200 OK') !== false) {
// Flickr now nicely provides the URL of the thumbnail in each flickr page.
preg_match('!<link rel=\"image_src\" href=\"(.+?)\"!', $data, $matches);
if (!empty($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=\"(.+?)\"!', $data, $matches);
if (!empty($matches[1])) {
$imageurl = $matches[1];
}
}
}
}
if ($imageurl != '') { // Let's download the image.
list($httpstatus, $headers, $data) = getHTTP($imageurl, 10); // Image is 240x120, so 10 seconds to download should be enough.
if (strpos($httpstatus, '200 OK') !== false) {
file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname, $data); // Save image to cache.
header('Content-Type: image/jpeg');
echo $data;
return;
}
}
} elseif ($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($httpstatus, $headers, $data) = getHTTP('https://vimeo.com/api/v2/video/'.htmlspecialchars($vid).'.php', 5);
if (strpos($httpstatus, '200 OK') !== false) {
$t = unserialize($data);
$imageurl = $t[0]['thumbnail_medium'];
// Then we download the image and serve it to our client.
list($httpstatus, $headers, $data) = getHTTP($imageurl, 10);
if (strpos($httpstatus, '200 OK') !== false) {
file_put_contents($GLOBALS['config']['CACHEDIR'].'/'.$thumbname, $data); // Save image to cache.
header('Content-Type: image/jpeg');
echo $data;
return;
}
}
} elseif ($domain == 'ted.com' || endsWith($domain, '.ted.com')) {
// The thumbnail for TED talks is located in the <link rel="image_src" [...]> tag on that page
// http://www.ted.com/talks/mikko_hypponen_fighting_viruses_defending_the_net.html
// <link rel="image_src" href="http://images.ted.com/images/ted/28bced335898ba54d4441809c5b1112ffaf36781_389x292.jpg" />
list($httpstatus, $headers, $data) = getHTTP($url, 5);
if (strpos($httpstatus, '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)"!', $data, $matches);
if (!empty($matches[1])) { // Let's download the image.
$imageurl = $matches[1];
list($httpstatus, $headers, $data) = getHTTP($imageurl, 20); // No control on image size, so wait long enough.
if (strpos($httpstatus, '200 OK') !== false) {
$filepath = $GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
file_put_contents($filepath, $data); // Save image to cache.
if (resizeImage($filepath)) {
header('Content-Type: image/jpeg');
echo file_get_contents($filepath);
return;
}
}
}
}
} elseif ($domain == 'xkcd.com' || endsWith($domain, '.xkcd.com')) {
// There is no thumbnail available for xkcd comics, so download the whole image and resize it.
// http://xkcd.com/327/
// <img src="http://imgs.xkcd.com/comics/exploits_of_a_mom.png" title="<BLABLA>" alt="<BLABLA>" />
list($httpstatus, $headers, $data) = getHTTP($url, 5);
if (strpos($httpstatus, '200 OK') !== false) {
// Extract the link to the thumbnail
preg_match('!<img src="(http://imgs.xkcd.com/comics/.*)" title="[^s]!', $data, $matches);
if (!empty($matches[1])) { // Let's download the image.
$imageurl = $matches[1];
list($httpstatus, $headers, $data) = getHTTP($imageurl, 20); // No control on image size, so wait long enough.
if (strpos($httpstatus, '200 OK') !== false) {
$filepath = $GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
file_put_contents($filepath, $data); // Save image to cache.
if (resizeImage($filepath)) {
header('Content-Type: image/jpeg');
echo file_get_contents($filepath);
return;
}
}
}
}
} else {
// For all other domains, we try to download the image and make a thumbnail.
list($httpstatus, $headers, $data) = getHTTP($url, 30); // We allow 30 seconds max to download (and downloads are limited to 4 Mb)
if (strpos($httpstatus, '200 OK') !== false) {
$filepath = $GLOBALS['config']['CACHEDIR'].'/'.$thumbname;
file_put_contents($filepath, $data); // Save image to cache.
if (resizeImage($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, $filepath); // Overwrite original picture with thumbnail.
return true;
}
// Invalidate caches when the database is changed or the user logs out.
// (eg. tags cache).
function invalidateCaches()
{
unset($_SESSION['tags']); // Purge cache attached to session.
pageCache::purgeCache(); // Purge page cache shared by sessions.
}
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($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'do=daily')) {
showDaily();
exit;
}
if (isset($_SERVER['QUERY_STRING']) && startswith($_SERVER['QUERY_STRING'], 'ws=')) {
processWS();
exit;
} // Webservices (for jQuery/jQueryUI)
if (!isset($_SESSION['LINKS_PER_PAGE'])) {
$_SESSION['LINKS_PER_PAGE'] = $GLOBALS['config']['LINKS_PER_PAGE'];
}
renderPage();
Reference in a new issue View git blame Copy permalink