664 lines
18 KiB
PHP
664 lines
18 KiB
PHP
<?php
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/**
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* Initialize some defaults needed for DokuWiki
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*/
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use dokuwiki\Extension\PluginController;
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use dokuwiki\ErrorHandler;
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use dokuwiki\Input\Input;
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use dokuwiki\Extension\Event;
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use dokuwiki\Extension\EventHandler;
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/**
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* timing Dokuwiki execution
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*
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* @param integer $start
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*
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* @return mixed
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*/
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function delta_time($start = 0)
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{
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return microtime(true) - ((float)$start);
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}
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define('DOKU_START_TIME', delta_time());
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global $config_cascade;
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$config_cascade = [];
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// if available load a preload config file
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$preload = fullpath(__DIR__) . '/preload.php';
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if (file_exists($preload)) include($preload);
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// define the include path
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if (!defined('DOKU_INC')) define('DOKU_INC', fullpath(__DIR__ . '/../') . '/');
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// define Plugin dir
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if (!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN', DOKU_INC . 'lib/plugins/');
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// define config path (packagers may want to change this to /etc/dokuwiki/)
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if (!defined('DOKU_CONF')) define('DOKU_CONF', DOKU_INC . 'conf/');
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// check for error reporting override or set error reporting to sane values
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if (!defined('DOKU_E_LEVEL') && file_exists(DOKU_CONF . 'report_e_all')) {
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define('DOKU_E_LEVEL', E_ALL);
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}
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if (!defined('DOKU_E_LEVEL')) {
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error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED & ~E_STRICT);
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} else {
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error_reporting(DOKU_E_LEVEL);
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}
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// avoid caching issues #1594
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header('Vary: Cookie');
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// init memory caches
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global $cache_revinfo;
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$cache_revinfo = [];
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global $cache_wikifn;
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$cache_wikifn = [];
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global $cache_cleanid;
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$cache_cleanid = [];
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global $cache_authname;
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$cache_authname = [];
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global $cache_metadata;
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$cache_metadata = [];
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// always include 'inc/config_cascade.php'
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// previously in preload.php set fields of $config_cascade will be merged with the defaults
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include(DOKU_INC . 'inc/config_cascade.php');
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//prepare config array()
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global $conf;
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$conf = [];
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// load the global config file(s)
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foreach (['default', 'local', 'protected'] as $config_group) {
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if (empty($config_cascade['main'][$config_group])) continue;
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foreach ($config_cascade['main'][$config_group] as $config_file) {
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if (file_exists($config_file)) {
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include($config_file);
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}
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}
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}
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//prepare license array()
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global $license;
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$license = [];
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// load the license file(s)
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foreach (['default', 'local'] as $config_group) {
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if (empty($config_cascade['license'][$config_group])) continue;
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foreach ($config_cascade['license'][$config_group] as $config_file) {
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if (file_exists($config_file)) {
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include($config_file);
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}
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}
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}
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// set timezone (as in pre 5.3.0 days)
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date_default_timezone_set(@date_default_timezone_get());
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// define baseURL
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if (!defined('DOKU_REL')) define('DOKU_REL', getBaseURL(false));
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if (!defined('DOKU_URL')) define('DOKU_URL', getBaseURL(true));
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if (!defined('DOKU_BASE')) {
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if ($conf['canonical']) {
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define('DOKU_BASE', DOKU_URL);
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} else {
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define('DOKU_BASE', DOKU_REL);
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}
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}
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// define whitespace
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if (!defined('NL')) define('NL', "\n");
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if (!defined('DOKU_LF')) define('DOKU_LF', "\n");
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if (!defined('DOKU_TAB')) define('DOKU_TAB', "\t");
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// define cookie and session id, append server port when securecookie is configured FS#1664
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if (!defined('DOKU_COOKIE')) {
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$serverPort = $_SERVER['SERVER_PORT'] ?? '';
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define('DOKU_COOKIE', 'DW' . md5(DOKU_REL . (($conf['securecookie']) ? $serverPort : '')));
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unset($serverPort);
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}
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// define main script
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if (!defined('DOKU_SCRIPT')) define('DOKU_SCRIPT', 'doku.php');
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if (!defined('DOKU_TPL')) {
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/**
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* @deprecated 2012-10-13 replaced by more dynamic method
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* @see tpl_basedir()
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*/
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define('DOKU_TPL', DOKU_BASE . 'lib/tpl/' . $conf['template'] . '/');
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}
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if (!defined('DOKU_TPLINC')) {
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/**
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* @deprecated 2012-10-13 replaced by more dynamic method
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* @see tpl_incdir()
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*/
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define('DOKU_TPLINC', DOKU_INC . 'lib/tpl/' . $conf['template'] . '/');
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}
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// make session rewrites XHTML compliant
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@ini_set('arg_separator.output', '&');
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// make sure global zlib does not interfere FS#1132
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@ini_set('zlib.output_compression', 'off');
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// increase PCRE backtrack limit
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@ini_set('pcre.backtrack_limit', '20971520');
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// enable gzip compression if supported
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$httpAcceptEncoding = $_SERVER['HTTP_ACCEPT_ENCODING'] ?? '';
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$conf['gzip_output'] &= (strpos($httpAcceptEncoding, 'gzip') !== false);
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global $ACT;
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if (
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$conf['gzip_output'] &&
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!defined('DOKU_DISABLE_GZIP_OUTPUT') &&
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function_exists('ob_gzhandler') &&
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// Disable compression when a (compressed) sitemap might be delivered
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// See https://bugs.dokuwiki.org/index.php?do=details&task_id=2576
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$ACT != 'sitemap'
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) {
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ob_start('ob_gzhandler');
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}
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// init session
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if (!headers_sent() && !defined('NOSESSION')) {
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if (!defined('DOKU_SESSION_NAME')) define('DOKU_SESSION_NAME', "DokuWiki");
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if (!defined('DOKU_SESSION_LIFETIME')) define('DOKU_SESSION_LIFETIME', 0);
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if (!defined('DOKU_SESSION_PATH')) {
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$cookieDir = empty($conf['cookiedir']) ? DOKU_REL : $conf['cookiedir'];
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define('DOKU_SESSION_PATH', $cookieDir);
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}
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if (!defined('DOKU_SESSION_DOMAIN')) define('DOKU_SESSION_DOMAIN', '');
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// start the session
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init_session();
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// load left over messages
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if (isset($_SESSION[DOKU_COOKIE]['msg'])) {
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$MSG = $_SESSION[DOKU_COOKIE]['msg'];
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unset($_SESSION[DOKU_COOKIE]['msg']);
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}
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}
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// don't let cookies ever interfere with request vars
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$_REQUEST = array_merge($_GET, $_POST);
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// we don't want a purge URL to be digged
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if (isset($_REQUEST['purge']) && !empty($_SERVER['HTTP_REFERER'])) unset($_REQUEST['purge']);
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// precalculate file creation modes
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init_creationmodes();
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// make real paths and check them
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init_paths();
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init_files();
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// setup plugin controller class (can be overwritten in preload.php)
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global $plugin_controller_class, $plugin_controller;
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if (empty($plugin_controller_class)) $plugin_controller_class = PluginController::class;
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// autoloader
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require_once(DOKU_INC . 'inc/load.php');
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// from now on everything is an exception
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ErrorHandler::register();
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// disable gzip if not available
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define('DOKU_HAS_BZIP', function_exists('bzopen'));
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define('DOKU_HAS_GZIP', function_exists('gzopen'));
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if ($conf['compression'] == 'bz2' && !DOKU_HAS_BZIP) {
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$conf['compression'] = 'gz';
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}
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if ($conf['compression'] == 'gz' && !DOKU_HAS_GZIP) {
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$conf['compression'] = 0;
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}
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// input handle class
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global $INPUT;
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$INPUT = new Input();
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// initialize plugin controller
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$plugin_controller = new $plugin_controller_class();
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// initialize the event handler
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global $EVENT_HANDLER;
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$EVENT_HANDLER = new EventHandler();
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$local = $conf['lang'];
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Event::createAndTrigger('INIT_LANG_LOAD', $local, 'init_lang', true);
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// setup authentication system
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if (!defined('NOSESSION')) {
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auth_setup();
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}
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// setup mail system
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mail_setup();
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$nil = null;
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Event::createAndTrigger('DOKUWIKI_INIT_DONE', $nil, null, false);
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/**
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* Initializes the session
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*
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* Makes sure the passed session cookie is valid, invalid ones are ignored an a new session ID is issued
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*
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* @link http://stackoverflow.com/a/33024310/172068
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* @link http://php.net/manual/en/session.configuration.php#ini.session.sid-length
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*/
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function init_session()
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{
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global $conf;
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session_name(DOKU_SESSION_NAME);
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session_set_cookie_params([
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'lifetime' => DOKU_SESSION_LIFETIME,
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'path' => DOKU_SESSION_PATH,
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'domain' => DOKU_SESSION_DOMAIN,
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'secure' => ($conf['securecookie'] && is_ssl()),
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'httponly' => true,
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'samesite' => 'Lax',
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]);
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// make sure the session cookie contains a valid session ID
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if (isset($_COOKIE[DOKU_SESSION_NAME]) && !preg_match('/^[-,a-zA-Z0-9]{22,256}$/', $_COOKIE[DOKU_SESSION_NAME])) {
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unset($_COOKIE[DOKU_SESSION_NAME]);
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}
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session_start();
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}
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/**
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* Checks paths from config file
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*/
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function init_paths()
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{
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global $conf;
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$paths = [
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'datadir' => 'pages',
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'olddir' => 'attic',
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'mediadir' => 'media',
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'mediaolddir' => 'media_attic',
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'metadir' => 'meta',
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'mediametadir' => 'media_meta',
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'cachedir' => 'cache',
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'indexdir' => 'index',
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'lockdir' => 'locks',
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'tmpdir' => 'tmp',
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'logdir' => 'log',
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];
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foreach ($paths as $c => $p) {
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$path = empty($conf[$c]) ? $conf['savedir'] . '/' . $p : $conf[$c];
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$conf[$c] = init_path($path);
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if (empty($conf[$c])) {
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$path = fullpath($path);
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nice_die("The $c ('$p') at $path is not found, isn't accessible or writable.
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You should check your config and permission settings.
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Or maybe you want to <a href=\"install.php\">run the
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installer</a>?");
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}
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}
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// path to old changelog only needed for upgrading
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$conf['changelog_old'] = init_path(
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$conf['changelog'] ?? $conf['savedir'] . '/changes.log'
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);
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if ($conf['changelog_old'] == '') {
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unset($conf['changelog_old']);
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}
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// hardcoded changelog because it is now a cache that lives in meta
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$conf['changelog'] = $conf['metadir'] . '/_dokuwiki.changes';
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$conf['media_changelog'] = $conf['metadir'] . '/_media.changes';
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}
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/**
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* Load the language strings
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*
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* @param string $langCode language code, as passed by event handler
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*/
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function init_lang($langCode)
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{
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//prepare language array
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global $lang, $config_cascade;
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$lang = [];
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//load the language files
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require(DOKU_INC . 'inc/lang/en/lang.php');
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foreach ($config_cascade['lang']['core'] as $config_file) {
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if (file_exists($config_file . 'en/lang.php')) {
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include($config_file . 'en/lang.php');
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}
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}
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if ($langCode && $langCode != 'en') {
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if (file_exists(DOKU_INC . "inc/lang/$langCode/lang.php")) {
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require(DOKU_INC . "inc/lang/$langCode/lang.php");
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}
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foreach ($config_cascade['lang']['core'] as $config_file) {
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if (file_exists($config_file . "$langCode/lang.php")) {
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include($config_file . "$langCode/lang.php");
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}
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}
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}
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}
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/**
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* Checks the existence of certain files and creates them if missing.
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*/
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function init_files()
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{
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global $conf;
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$files = [$conf['indexdir'] . '/page.idx'];
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foreach ($files as $file) {
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if (!file_exists($file)) {
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$fh = @fopen($file, 'a');
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if ($fh) {
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fclose($fh);
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if ($conf['fperm']) chmod($file, $conf['fperm']);
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} else {
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nice_die("$file is not writable. Check your permissions settings!");
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}
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}
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}
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}
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/**
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* Returns absolute path
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*
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* This tries the given path first, then checks in DOKU_INC.
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* Check for accessibility on directories as well.
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*
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* @param string $path
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*
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* @return bool|string
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*/
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function init_path($path)
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{
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// check existence
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$p = fullpath($path);
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if (!file_exists($p)) {
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$p = fullpath(DOKU_INC . $path);
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if (!file_exists($p)) {
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return '';
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}
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}
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// check writability
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if (!@is_writable($p)) {
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return '';
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}
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// check accessability (execute bit) for directories
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if (@is_dir($p) && !file_exists("$p/.")) {
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return '';
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}
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return $p;
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}
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/**
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* Sets the internal config values fperm and dperm which, when set,
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* will be used to change the permission of a newly created dir or
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* file with chmod. Considers the influence of the system's umask
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* setting the values only if needed.
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*/
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function init_creationmodes()
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{
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global $conf;
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// Legacy support for old umask/dmask scheme
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unset($conf['dmask']);
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unset($conf['fmask']);
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unset($conf['umask']);
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$conf['fperm'] = false;
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$conf['dperm'] = false;
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// get system umask, fallback to 0 if none available
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$umask = @umask();
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if (!$umask) $umask = 0000;
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// check what is set automatically by the system on file creation
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// and set the fperm param if it's not what we want
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$auto_fmode = 0666 & ~$umask;
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if ($auto_fmode != $conf['fmode']) $conf['fperm'] = $conf['fmode'];
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// check what is set automatically by the system on directory creation
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// and set the dperm param if it's not what we want.
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$auto_dmode = 0777 & ~$umask;
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if ($auto_dmode != $conf['dmode']) $conf['dperm'] = $conf['dmode'];
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}
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/**
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* Returns the full absolute URL to the directory where
|
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* DokuWiki is installed in (includes a trailing slash)
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*
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* !! Can not access $_SERVER values through $INPUT
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* !! here as this function is called before $INPUT is
|
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* !! initialized.
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*
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* @author Andreas Gohr <andi@splitbrain.org>
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*
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* @param null|bool $abs Return an absolute URL? (null defaults to $conf['canonical'])
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*
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* @return string
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*/
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function getBaseURL($abs = null)
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{
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global $conf;
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$abs ??= $conf['canonical'];
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if (!empty($conf['basedir'])) {
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$dir = $conf['basedir'];
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} elseif (substr($_SERVER['SCRIPT_NAME'], -4) == '.php') {
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$dir = dirname($_SERVER['SCRIPT_NAME']);
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} elseif (substr($_SERVER['PHP_SELF'], -4) == '.php') {
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$dir = dirname($_SERVER['PHP_SELF']);
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} elseif ($_SERVER['DOCUMENT_ROOT'] && $_SERVER['SCRIPT_FILENAME']) {
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$dir = preg_replace(
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'/^' . preg_quote($_SERVER['DOCUMENT_ROOT'], '/') . '/',
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'',
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$_SERVER['SCRIPT_FILENAME']
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);
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$dir = dirname('/' . $dir);
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} else {
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$dir = ''; //probably wrong, but we assume it's in the root
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}
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$dir = str_replace('\\', '/', $dir); // bugfix for weird WIN behaviour
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$dir = preg_replace('#//+#', '/', "/$dir/"); // ensure leading and trailing slashes
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//handle script in lib/exe dir
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$dir = preg_replace('!lib/exe/$!', '', $dir);
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//handle script in lib/plugins dir
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$dir = preg_replace('!lib/plugins/.*$!', '', $dir);
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//finish here for relative URLs
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if (!$abs) return $dir;
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//use config if available, trim any slash from end of baseurl to avoid multiple consecutive slashes in the path
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if (!empty($conf['baseurl'])) return rtrim($conf['baseurl'], '/') . $dir;
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//split hostheader into host and port
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if (isset($_SERVER['HTTP_HOST'])) {
|
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if (
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(!empty($conf['trustedproxy'])) && isset($_SERVER['HTTP_X_FORWARDED_HOST'])
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&& preg_match('/' . $conf['trustedproxy'] . '/', $_SERVER['REMOTE_ADDR'])
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) {
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$cur_host = $_SERVER['HTTP_X_FORWARDED_HOST'];
|
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} else {
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$cur_host = $_SERVER['HTTP_HOST'];
|
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}
|
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$parsed_host = parse_url('http://' . $cur_host);
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$host = $parsed_host['host'] ?? '';
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$port = $parsed_host['port'] ?? '';
|
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} elseif (isset($_SERVER['SERVER_NAME'])) {
|
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$parsed_host = parse_url('http://' . $_SERVER['SERVER_NAME']);
|
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$host = $parsed_host['host'] ?? '';
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$port = $parsed_host['port'] ?? '';
|
|
} else {
|
|
$host = php_uname('n');
|
|
$port = '';
|
|
}
|
|
|
|
if (!is_ssl()) {
|
|
$proto = 'http://';
|
|
if ($port == '80') {
|
|
$port = '';
|
|
}
|
|
} else {
|
|
$proto = 'https://';
|
|
if ($port == '443') {
|
|
$port = '';
|
|
}
|
|
}
|
|
|
|
if ($port !== '') $port = ':' . $port;
|
|
|
|
return $proto . $host . $port . $dir;
|
|
}
|
|
|
|
/**
|
|
* Check if accessed via HTTPS
|
|
*
|
|
* Apache leaves ,$_SERVER['HTTPS'] empty when not available, IIS sets it to 'off'.
|
|
* 'false' and 'disabled' are just guessing
|
|
*
|
|
* @returns bool true when SSL is active
|
|
*/
|
|
function is_ssl()
|
|
{
|
|
global $conf;
|
|
|
|
// check if we are behind a reverse proxy
|
|
if (
|
|
(!empty($conf['trustedproxy'])) && isset($_SERVER['HTTP_X_FORWARDED_PROTO'])
|
|
&& preg_match('/' . $conf['trustedproxy'] . '/', $_SERVER['REMOTE_ADDR'])
|
|
&& ($_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')
|
|
) {
|
|
return true;
|
|
}
|
|
|
|
if (preg_match('/^(|off|false|disabled)$/i', $_SERVER['HTTPS'] ?? 'off')) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* checks it is windows OS
|
|
* @return bool
|
|
*/
|
|
function isWindows()
|
|
{
|
|
return strtoupper(substr(PHP_OS, 0, 3)) === 'WIN';
|
|
}
|
|
|
|
/**
|
|
* print a nice message even if no styles are loaded yet.
|
|
*
|
|
* @param integer|string $msg
|
|
*/
|
|
function nice_die($msg)
|
|
{
|
|
echo<<<EOT
|
|
<!DOCTYPE html>
|
|
<html>
|
|
<head><title>DokuWiki Setup Error</title></head>
|
|
<body style="font-family: Arial, sans-serif">
|
|
<div style="width:60%; margin: auto; background-color: #fcc;
|
|
border: 1px solid #faa; padding: 0.5em 1em;">
|
|
<h1 style="font-size: 120%">DokuWiki Setup Error</h1>
|
|
<p>$msg</p>
|
|
</div>
|
|
</body>
|
|
</html>
|
|
EOT;
|
|
if (defined('DOKU_UNITTEST')) {
|
|
throw new RuntimeException('nice_die: ' . $msg);
|
|
}
|
|
exit(1);
|
|
}
|
|
|
|
/**
|
|
* A realpath() replacement
|
|
*
|
|
* This function behaves similar to PHP's realpath() but does not resolve
|
|
* symlinks or accesses upper directories
|
|
*
|
|
* @author Andreas Gohr <andi@splitbrain.org>
|
|
* @author <richpageau at yahoo dot co dot uk>
|
|
* @link http://php.net/manual/en/function.realpath.php#75992
|
|
*
|
|
* @param string $path
|
|
* @param bool $exists
|
|
*
|
|
* @return bool|string
|
|
*/
|
|
function fullpath($path, $exists = false)
|
|
{
|
|
static $run = 0;
|
|
$root = '';
|
|
$iswin = (isWindows() || !empty($GLOBALS['DOKU_UNITTEST_ASSUME_WINDOWS']));
|
|
|
|
// find the (indestructable) root of the path - keeps windows stuff intact
|
|
if ($path[0] == '/') {
|
|
$root = '/';
|
|
} elseif ($iswin) {
|
|
// match drive letter and UNC paths
|
|
if (preg_match('!^([a-zA-z]:)(.*)!', $path, $match)) {
|
|
$root = $match[1] . '/';
|
|
$path = $match[2];
|
|
} elseif (preg_match('!^(\\\\\\\\[^\\\\/]+\\\\[^\\\\/]+[\\\\/])(.*)!', $path, $match)) {
|
|
$root = $match[1];
|
|
$path = $match[2];
|
|
}
|
|
}
|
|
$path = str_replace('\\', '/', $path);
|
|
|
|
// if the given path wasn't absolute already, prepend the script path and retry
|
|
if (!$root) {
|
|
$base = dirname($_SERVER['SCRIPT_FILENAME']);
|
|
$path = $base . '/' . $path;
|
|
if ($run == 0) { // avoid endless recursion when base isn't absolute for some reason
|
|
$run++;
|
|
return fullpath($path, $exists);
|
|
}
|
|
}
|
|
$run = 0;
|
|
|
|
// canonicalize
|
|
$path = explode('/', $path);
|
|
$newpath = [];
|
|
foreach ($path as $p) {
|
|
if ($p === '' || $p === '.') continue;
|
|
if ($p === '..') {
|
|
array_pop($newpath);
|
|
continue;
|
|
}
|
|
$newpath[] = $p;
|
|
}
|
|
$finalpath = $root . implode('/', $newpath);
|
|
|
|
// check for existence when needed (except when unit testing)
|
|
if ($exists && !defined('DOKU_UNITTEST') && !file_exists($finalpath)) {
|
|
return false;
|
|
}
|
|
return $finalpath;
|
|
}
|