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<?php
/**
* Initialize some defaults needed for DokuWiki
*/
// start timing Dokuwiki execution
function delta_time($start=0) {
list($usec, $sec) = explode(" ", microtime());
return ((float)$usec+(float)$sec)-((float)$start);
}
define('DOKU_START_TIME', delta_time());
// define the include path
if(!defined('DOKU_INC')) define('DOKU_INC',fullpath(dirname(__FILE__).'/../').'/');
// 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); }
else { error_reporting(DOKU_E_LEVEL); }
// 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();
//prepare config array()
global $conf;
if (!defined('DOKU_UNITTEST')) {
$conf = array();
// load the config file(s)
require_once(DOKU_CONF.'dokuwiki.php');
if(@file_exists(DOKU_CONF.'local.php')){
require_once(DOKU_CONF.'local.php');
}
}
//prepare language array
global $lang;
$lang = array();
//load the language files
require_once(DOKU_INC.'inc/lang/en/lang.php');
if ( $conf['lang'] && $conf['lang'] != 'en' ) {
require_once(DOKU_INC.'inc/lang/'.$conf['lang'].'/lang.php');
}
// 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($conf['canonical']){
define('DOKU_BASE',DOKU_URL);
}else{
define('DOKU_BASE',DOKU_REL);
}
}
// define whitespace
if(!defined('DOKU_LF')) define ('DOKU_LF',"\n");
if(!defined('DOKU_TAB')) define ('DOKU_TAB',"\t");
// define cookie and session id
if (!defined('DOKU_COOKIE')) define('DOKU_COOKIE', 'DW'.md5(DOKU_REL));
// define Plugin dir
if(!defined('DOKU_PLUGIN')) define('DOKU_PLUGIN',DOKU_INC.'lib/plugins/');
// define main script
if(!defined('DOKU_SCRIPT')) define('DOKU_SCRIPT','doku.php');
// define Template baseURL
if(!defined('DOKU_TPL')) define('DOKU_TPL',
DOKU_BASE.'lib/tpl/'.$conf['template'].'/');
// define real Template directory
if(!defined('DOKU_TPLINC')) define('DOKU_TPLINC',
DOKU_INC.'lib/tpl/'.$conf['template'].'/');
// make session rewrites XHTML compliant
@ini_set('arg_separator.output', '&');
// make sure global zlib does not interfere FS#1132
@ini_set('zlib.output_compression', 'off');
// increase PCRE backtrack limit
@ini_set('pcre.backtrack_limit', '20971520');
// enable gzip compression
if ($conf['gzip_output'] &&
!defined('DOKU_DISABLE_GZIP_OUTPUT') &&
function_exists('ob_gzhandler') &&
preg_match('/gzip|deflate/', $_SERVER['HTTP_ACCEPT_ENCODING'])) {
ob_start('ob_gzhandler');
}
// init session
if (!headers_sent() && !defined('NOSESSION')){
session_name("DokuWiki");
session_set_cookie_params(0, DOKU_REL);
session_start();
}
// kill magic quotes
if (get_magic_quotes_gpc() && !defined('MAGIC_QUOTES_STRIPPED')) {
if (!empty($_GET)) remove_magic_quotes($_GET);
if (!empty($_POST)) remove_magic_quotes($_POST);
if (!empty($_COOKIE)) remove_magic_quotes($_COOKIE);
if (!empty($_REQUEST)) remove_magic_quotes($_REQUEST);
@ini_set('magic_quotes_gpc', 0);
define('MAGIC_QUOTES_STRIPPED',1);
}
@set_magic_quotes_runtime(0);
@ini_set('magic_quotes_sybase',0);
// don't let cookies ever interfere with request vars
$_REQUEST = array_merge($_GET,$_POST);
// disable gzip if not available
if($conf['compression'] == 'bz2' && !function_exists('bzopen')){
$conf['compression'] = 'gz';
}
if($conf['compression'] == 'gz' && !function_exists('gzopen')){
$conf['compression'] = 0;
}
// fix dateformat for upgraders
if(strpos($conf['dformat'],'%') === false){
$conf['dformat'] = '%Y/%m/%d %H:%M';
}
// precalculate file creation modes
init_creationmodes();
// make real paths and check them
init_paths();
init_files();
// automatic upgrade to script versions of certain files
scriptify(DOKU_CONF.'users.auth');
scriptify(DOKU_CONF.'acl.auth');
/**
* Checks paths from config file
*/
function init_paths(){
global $conf;
$paths = array('datadir' => 'pages',
'olddir' => 'attic',
'mediadir' => 'media',
'metadir' => 'meta',
'cachedir' => 'cache',
'indexdir' => 'index',
'lockdir' => 'locks',
'tmpdir' => 'tmp');
foreach($paths as $c => $p){
if(empty($conf[$c])) $conf[$c] = $conf['savedir'].'/'.$p;
$conf[$c] = init_path($conf[$c]);
if(empty($conf[$c])) nice_die("The $c ('$p') does not exist, 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';
}
/**
* Checks the existance 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 accessability on directories as well.
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function init_path($path){
// check existance
$p = fullpath($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
$auto_fmode = 0666 & ~$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'] = $conf['dmode'];
}
/**
* remove magic quotes recursivly
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function remove_magic_quotes(&$array) {
foreach (array_keys($array) as $key) {
// handle magic quotes in keynames (breaks order)
$sk = stripslashes($key);
if($sk != $key){
$array[$sk] = $array[$key];
unset($array[$key]);
$key = $sk;
}
// do recursion if needed
if (is_array($array[$key])) {
remove_magic_quotes($array[$key]);
}else {
$array[$key] = stripslashes($array[$key]);
}
}
}
/**
* Returns the full absolute URL to the directory where
* DokuWiki is installed in (includes a trailing slash)
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function getBaseURL($abs=null){
global $conf;
//if canonical url enabled always return absolute
if(is_null($abs)) $abs = $conf['canonical'];
if($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 $dir;
//use config option if available, trim any slash from end of baseurl to avoid multiple consecutive slashes in the path
if($conf['baseurl']) return rtrim($conf['baseurl'],'/').$dir;
//split hostheader into host and port
list($host,$port) = explode(':',$_SERVER['HTTP_HOST']);
if(!$port) $port = $_SERVER['SERVER_PORT'];
if(!$port) $port = 80;
// see if HTTPS is enabled - apache leaves this empty when not available,
// IIS sets it to 'off', 'false' and 'disabled' are just guessing
if (preg_match('/^(|off|false|disabled)$/i',$_SERVER['HTTPS'])){
$proto = 'http://';
if ($port == '80') {
$port='';
}
}else{
$proto = 'https://';
if ($port == '443') {
$port='';
}
}
if($port) $port = ':'.$port;
return $proto.$host.$port.$dir;
}
/**
* Append a PHP extension to a given file and adds an exit call
*
* This is used to migrate some old configfiles. An added PHP extension
* ensures the contents are not shown to webusers even if .htaccess files
* do not work
*
* @author Jan Decaluwe <jan@jandecaluwe.com>
*/
function scriptify($file) {
// checks
if (!is_readable($file)) {
return;
}
$fn = $file.'.php';
if (@file_exists($fn)) {
return;
}
$fh = fopen($fn, 'w');
if (!$fh) {
nice_die($fn.' is not writable. Check your permission settings!');
}
// write php exit hack first
fwrite($fh, "# $fn\n");
fwrite($fh, '# <?php exit()?>'."\n");
fwrite($fh, "# Don't modify the lines above\n");
fwrite($fh, "#\n");
// copy existing lines
$lines = file($file);
foreach ($lines as $line){
fwrite($fh, $line);
}
fclose($fh);
//try to rename the old file
io_rename($file,"$file.old");
}
/**
* print a nice message even if no styles are loaded yet.
*/
function nice_die($msg){
echo<<<EOT
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head><title>DokuWiki Setup Error</title></head>
<body style="font-family: Arial, sans-serif">
<div style="width:60%; margin: auto; background-color: #fcc;
border: 1px solid #faa; padding: 0.5em 1em;">
<h1 style="font-size: 120%">DokuWiki Setup Error</h1>
<p>$msg</p>
</div>
</body>
</html>
EOT;
exit;
}
/**
* A realpath() replacement
*
* This function behaves similar to PHP's realpath() but does not resolve
* symlinks or accesses upper directories
*
* @author <richpageau at yahoo dot co dot uk>
* @link http://de3.php.net/manual/en/function.realpath.php#75992
*/
function fullpath($path){
$iswin = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN');
if($iswin) $path = str_replace('\\','/',$path); // windows compatibility
// check if path begins with "/" or "c:" ie. is absolute
// if it isnt concat with script path
if ((!$iswin && $path{0} !== '/') ||
($iswin && $path{1} !== ':')) {
$base=dirname($_SERVER['SCRIPT_FILENAME']);
$path=$base."/".$path;
}
// 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 = implode('/', $newpath);
if(!$iswin) $finalpath = '/'.$finalpath;
// check then return valid path or filename
if (file_exists($finalpath)) {
return ($finalpath);
}
else return false;
}
//Setup VIM: ex: et ts=2 enc=utf-8 :
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