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