diff options
Diffstat (limited to 'platform/www/inc/init.php')
-rw-r--r-- | platform/www/inc/init.php | 623 |
1 files changed, 623 insertions, 0 deletions
diff --git a/platform/www/inc/init.php b/platform/www/inc/init.php new file mode 100644 index 0000000..f9bb534 --- /dev/null +++ b/platform/www/inc/init.php @@ -0,0 +1,623 @@ +<?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)) $plugin_controller_class = dokuwiki\Extension\PluginController::class; + +// load libraries +require_once(DOKU_INC.'vendor/autoload.php'); +require_once(DOKU_INC.'inc/load.php'); + +// disable gzip if not available +define('DOKU_HAS_BZIP', function_exists('bzopen')); +define('DOKU_HAS_GZIP', function_exists('gzopen')); +if($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(); + +/** + * 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; + + $paths = array('datadir' => 'pages', + 'olddir' => 'attic', + 'mediadir' => 'media', + 'mediaolddir' => 'media_attic', + 'metadir' => 'meta', + 'mediametadir' => 'media_meta', + 'cachedir' => 'cache', + 'indexdir' => 'index', + 'lockdir' => 'locks', + 'tmpdir' => 'tmp'); + + foreach($paths as $c => $p) { + $path = empty($conf[$c]) ? $conf['savedir'].'/'.$p : $conf[$c]; + $conf[$c] = init_path($path); + if(empty($conf[$c])) + 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']); + unset($conf['fperm']); + unset($conf['dperm']); + + // 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 = $conf['fmode'] & ~$umask; + if($auto_fmode != $conf['fmode']) $conf['fperm'] = $conf['fmode']; + + // check what is set automatically by the system on file creation + // and set the dperm param if it's not what we want + $auto_dmode = $conf['dmode'] & ~$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; +} + |