'); // 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', $_COOKIE); } // Prevent caching on client side or proxy: (yes, it's ugly) header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT'); header('Cache-Control: no-store, no-cache, must-revalidate'); header('Cache-Control: post-check=0, pre-check=0', false); header('Pragma: no-cache'); // Directories creations (Note that your web host may require differents rights than 705.) if (!is_writable(realpath(dirname(__FILE__)))) { die('
ERROR: Shaarli does not have the right to write in its own directory ('.realpath(dirname(__FILE__)).').
'); } if (!is_dir($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($GLOBALS['config']['DATADIR'].'/.htaccess')) { die('
ERROR: Shaarli does not have the right to write in its data directory ('.realpath($GLOBALS['config']['DATADIR']).').
'); } 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('>', '>', str_replace('<', '<', 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', '$1', $url); } // This function inserts   where relevant so that multiple spaces are properly displayed in HTML // even in the absence of
  (This is used in description to keep text formatting)
function keepMultipleSpaces($text)
{
    return str_replace('  ', '  ', $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'], " 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'], "");
}

// 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'], "");
}

// 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'], "");

            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 ''; // 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('!(.*?)!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);
    }

    $pageaddr = htmlspecialchars(indexUrl());
    echo '';
    echo ''.htmlspecialchars($GLOBALS['title']).''.$pageaddr.'';
    echo 'Shared linksen-en'.$pageaddr.''."\n\n";
    if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) {
        echo '';
        echo '';
        echo '';
        echo '';
    }
    $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 ($usepermalinks === true) {
            echo ''.htmlspecialchars($link['title']).''.$guid.''.$guid.'';
        } else {
            echo ''.htmlspecialchars($link['title']).''.$guid.''.$absurl.'';
        }
        if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) {
            echo ''.htmlspecialchars($rfc822date)."\n";
        }
        if ($link['tags'] != '') {
            // Adding tags to each RSS entry (as mentioned in RSS specification)

            foreach (explode(' ', $link['tags']) as $tag) {
                echo ''.htmlspecialchars($tag).''."\n";
            }
        }

        // Add permalink in description
        $descriptionlink = '(Permalink)';
        // If user wants permalinks first, put the final link in description
        if ($usepermalinks === true) {
            $descriptionlink = '(Link)';
        }
        if (strlen($link['description']) > 0) {
            $descriptionlink = $descriptionlink;
        }
        if (!empty($link['via'])) {
            $via = 'Origin => '.htmlspecialchars(getJustDomain($link['via'])).'
'; } else { $via = ''; } if ($GLOBALS['config']['ENABLE_MARKDOWN'] === true) { $Parsedown = new Parsedown(); echo 'setMarkupEscaped(true)->setBreaksEnabled(true)->text($link['description']).$via.$descriptionlink.']]> '."\n
\n"; } else { echo ' '."\n
\n"; } ++$i; } echo '
'; $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 $entries .= ''.htmlspecialchars($link['title']).''; if ($usepermalinks === true) { $entries .= ''.$guid.''; } else { $entries .= ''.$guid.''; } if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) { $entries .= ''.htmlspecialchars($iso8601date).''; } // Add permalink in description $descriptionlink = htmlspecialchars('(Permalink)'); if (isset($link['via']) && !empty($link['via'])) { $via = htmlspecialchars('Origin => '.getJustDomain($link['via']).'
'); } else { $via = ''; } // If user wants permalinks first, put the final link in description if ($usepermalinks === true) { $descriptionlink = htmlspecialchars('(Link)'); } if (strlen($link['description']) > 0) { $descriptionlink = $descriptionlink; } if ($GLOBALS['config']['ENABLE_MARKDOWN'] === true) { $Parsedown = new Parsedown(); $entries .= ''.htmlspecialchars($Parsedown->setMarkupEscaped(true)->setBreaksEnabled(true)->text($link['description'])).' '.$via.$descriptionlink."\n"; } else { $entries .= ''.htmlspecialchars(nl2br(keepMultipleSpaces(text2clickable(htmlspecialchars($link['description']))))).$via.$descriptionlink."\n"; } if ($link['tags'] != '') { // Adding tags to each ATOM entry (as mentioned in ATOM specification) foreach (explode(' ', $link['tags']) as $tag) { $entries .= ''."\n"; } } $entries .= "
\n"; ++$i; } $feed = ''; $feed .= ''.htmlspecialchars($GLOBALS['title']).''; if (!$GLOBALS['config']['HIDE_TIMESTAMPS'] || isLoggedIn()) { $feed .= ''.htmlspecialchars($latestDate).''; } $feed .= ''; if (!empty($GLOBALS['config']['PUBSUBHUB_URL'])) { $feed .= ''; $feed .= ''; $feed .= ''; } $feed .= ''.htmlspecialchars($pageaddr).''.htmlspecialchars($pageaddr).''; $feed .= ''.htmlspecialchars($pageaddr).''."\n\n"; // Yes, I know I should use a real IRI (RFC3987), but the site URL will do. $feed .= $entries; $feed .= ''; 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'); $pageaddr = htmlspecialchars(indexUrl()); echo ''; echo ''; echo ''; echo 'Daily - '.htmlspecialchars($GLOBALS['title']).''.$pageaddr.''; echo 'Daily shared linksen-en'.$pageaddr.''."\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 ''.htmlspecialchars($GLOBALS['title'].' - '.$daydate).''.$absurl.''.$absurl.''; echo ''.htmlspecialchars($rfc822date).''; // 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 ''."\n\n\n"; } echo ''; $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 ''; 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 ''; 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 ''; 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; } $LINKSDB->savedb(); // save to disk echo ''; exit; } // Rename a tag: if (!empty($_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; } $LINKSDB->savedb(); // save to disk echo ''; exit; } } // -------- User wants to add a link without using the bookmarklet: show form. if (isset($_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 ''; 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 ''; 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']) && $_GET['source'] == 'bookmarklet') { echo ''; exit; } header('Location: ?'); // After deleting the link, redirect to the home page. exit; } // -------- User clicked the "EDIT" button on a link: Display link edit form. if (isset($_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) in html if (strpos($status, '200 OK') !== false) { // Look for charset in html header. preg_match('##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 << Bookmarks

Bookmarks

HTML; foreach ($LINKSDB as $link) { if ($exportWhat == 'all' || ($exportWhat == 'private' && $link['private'] != 0) || ($exportWhat == 'public' && $link['private'] == 0)) { echo '
'.htmlspecialchars($link['title'])."\n"; if ($link['description'] != '') { echo '
'.htmlspecialchars($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']) ? '?' : $_SERVER['HTTP_REFERER']); echo ''; exit; } if (!tokenOk($_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, '')) { $type = 'netscape'; } // Netscape bookmark file (aka Firefox). // Then import the bookmarks. if ($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('
', $data) as $html) { // explode is very fast $link = array('linkdate' => '', 'title' => '', 'url' => '', 'description' => '', 'tags' => '', 'private' => 0); $d = explode('
', $html); if (startswith($d[0], '(.*?)!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 ''; } else { echo ''; } } // ----------------------------------------------------------------------------------------------- // Template for the list of links (