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<?php
/**
* Information and debugging functions
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
if(!defined('DOKU_INC')) define('DOKU_INC',fullpath(dirname(__FILE__).'/../').'/');
if(!defined('DOKU_MESSAGEURL')) define('DOKU_MESSAGEURL','http://update.dokuwiki.org/check/');
require_once(DOKU_INC.'inc/HTTPClient.php');
/**
* Check for new messages from upstream
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function checkUpdateMessages(){
global $conf;
global $INFO;
if(!$conf['updatecheck']) return;
if($conf['useacl'] && !$INFO['ismanager']) return;
$cf = $conf['cachedir'].'/messages.txt';
$lm = @filemtime($cf);
// check if new messages needs to be fetched
if($lm < time()-(60*60*24) || $lm < @filemtime(DOKU_CONF.'msg')){
$num = @file(DOKU_CONF.'msg');
$num = is_array($num) ? (int) $num[0] : 0;
$http = new DokuHTTPClient();
$http->timeout = 8;
$data = $http->get(DOKU_MESSAGEURL.$num);
io_saveFile($cf,$data);
}else{
$data = io_readFile($cf);
}
// show messages through the usual message mechanism
$msgs = explode("\n%\n",$data);
foreach($msgs as $msg){
if($msg) msg($msg,2);
}
}
/**
* Return DokuWikis version
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function getVersion(){
//import version string
if(@file_exists(DOKU_INC.'VERSION')){
//official release
return 'Release '.trim(io_readfile(DOKU_INC.'VERSION'));
}elseif(is_dir(DOKU_INC.'_darcs')){
//darcs checkout - read last 2000 bytes of inventory
$sz = filesize(DOKU_INC.'_darcs/inventory');
$seek = max(0,$sz-2000);
$fh = fopen(DOKU_INC.'_darcs/inventory','rb');
fseek($fh,$seek);
$chunk = fread($fh,2000);
fclose($fh);
$inv = preg_grep('#\*\*\d{14}[\]$]#',explode("\n",$chunk));
$cur = array_pop($inv);
preg_match('#\*\*(\d{4})(\d{2})(\d{2})#',$cur,$matches);
return 'Darcs '.$matches[1].'-'.$matches[2].'-'.$matches[3];
}else{
return 'snapshot?';
}
}
/**
* Run a few sanity checks
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function check(){
global $conf;
global $INFO;
msg('DokuWiki version: '.getVersion(),1);
if(version_compare(phpversion(),'4.3.3','<')){
msg('Your PHP version is too old ('.phpversion().' vs. 4.3.3+ recommended)',-1);
}elseif(version_compare(phpversion(),'4.3.10','<')){
msg('Consider upgrading PHP to 4.3.10 or higher for security reasons (your version: '.phpversion().')',0);
}else{
msg('PHP version '.phpversion(),1);
}
$mem = (int) php_to_byte(ini_get('memory_limit'));
if($mem){
if($mem < 16777216){
msg('PHP is limited to less than 16MB RAM ('.$mem.' bytes). Increase memory_limit in php.ini',-1);
}elseif($mem < 20971520){
msg('PHP is limited to less than 20MB RAM ('.$mem.' bytes), you might encounter problems with bigger pages. Increase memory_limit in php.ini',-1);
}elseif($mem < 33554432){
msg('PHP is limited to less than 32MB RAM ('.$mem.' bytes), but that should be enough in most cases. If not, increase memory_limit in php.ini',0);
}else{
msg('More than 32MB RAM ('.$mem.' bytes) available.',1);
}
}
if(is_writable($conf['changelog'])){
msg('Changelog is writable',1);
}else{
if (@file_exists($conf['changelog'])) {
msg('Changelog is not writable',-1);
}
}
if (isset($conf['changelog_old']) && @file_exists($conf['changelog_old'])) {
msg('Old changelog exists', 0);
}
if (@file_exists($conf['changelog'].'_failed')) {
msg('Importing old changelog failed', -1);
} else if (@file_exists($conf['changelog'].'_importing')) {
msg('Importing old changelog now.', 0);
} else if (@file_exists($conf['changelog'].'_import_ok')) {
msg('Old changelog imported', 1);
if (!plugin_isdisabled('importoldchangelog')) {
msg('Importoldchangelog plugin not disabled after import', -1);
}
}
if(is_writable($conf['datadir'])){
msg('Datadir is writable',1);
}else{
msg('Datadir is not writable',-1);
}
if(is_writable($conf['olddir'])){
msg('Attic is writable',1);
}else{
msg('Attic is not writable',-1);
}
if(is_writable($conf['mediadir'])){
msg('Mediadir is writable',1);
}else{
msg('Mediadir is not writable',-1);
}
if(is_writable($conf['cachedir'])){
msg('Cachedir is writable',1);
}else{
msg('Cachedir is not writable',-1);
}
if(is_writable($conf['lockdir'])){
msg('Lockdir is writable',1);
}else{
msg('Lockdir is not writable',-1);
}
if($conf['authtype'] == 'plain'){
if(is_writable(DOKU_CONF.'users.auth.php')){
msg('conf/users.auth.php is writable',1);
}else{
msg('conf/users.auth.php is not writable',0);
}
}
if(function_exists('mb_strpos')){
if(defined('UTF8_NOMBSTRING')){
msg('mb_string extension is available but will not be used',0);
}else{
msg('mb_string extension is available and will be used',1);
}
}else{
msg('mb_string extension not available - PHP only replacements will be used',0);
}
if($conf['allowdebug']){
msg('Debugging support is enabled. If you don\'t need it you should set $conf[\'allowdebug\'] = 0',-1);
}else{
msg('Debugging support is disabled',1);
}
if($INFO['userinfo']['name']){
msg('You are currently logged in as '.$_SERVER['REMOTE_USER'].' ('.$INFO['userinfo']['name'].')',0);
msg('You are part of the groups '.join($INFO['userinfo']['grps'],', '),0);
}else{
msg('You are currently not logged in',0);
}
msg('Your current permission for this page is '.$INFO['perm'],0);
if(is_writable($INFO['filepath'])){
msg('The current page is writable by the webserver',0);
}else{
msg('The current page is not writable by the webserver',0);
}
if($INFO['writable']){
msg('The current page is writable by you',0);
}else{
msg('The current page is not writable by you',0);
}
}
/**
* print a message
*
* If HTTP headers were not sent yet the message is added
* to the global message array else it's printed directly
* using html_msgarea()
*
*
* Levels can be:
*
* -1 error
* 0 info
* 1 success
*
* @author Andreas Gohr <andi@splitbrain.org>
* @see html_msgarea
*/
function msg($message,$lvl=0,$line='',$file=''){
global $MSG;
$errors[-1] = 'error';
$errors[0] = 'info';
$errors[1] = 'success';
$errors[2] = 'notify';
if($line || $file) $message.=' ['.basename($file).':'.$line.']';
if(!headers_sent()){
if(!isset($MSG)) $MSG = array();
$MSG[]=array('lvl' => $errors[$lvl], 'msg' => $message);
}else{
$MSG = array();
$MSG[]=array('lvl' => $errors[$lvl], 'msg' => $message);
if(function_exists('html_msgarea')){
html_msgarea();
}else{
print "ERROR($lvl) $message";
}
}
}
/**
* print debug messages
*
* little function to print the content of a var
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function dbg($msg,$hidden=false){
(!$hidden) ? print '<pre class="dbg">' : print "<!--\n";
print_r($msg);
(!$hidden) ? print '</pre>' : print "\n-->";
}
/**
* Print info to a log file
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function dbglog($msg){
global $conf;
$file = $conf['cachedir'].'/debug.log';
$fh = fopen($file,'a');
if($fh){
fwrite($fh,date('H:i:s ').$_SERVER['REMOTE_ADDR'].': '.$msg."\n");
fclose($fh);
}
}
/**
* Print a reversed, prettyprinted backtrace
*
* @author Gary Owen <gary_owen@bigfoot.com>
*/
function dbg_backtrace(){
// Get backtrace
$backtrace = debug_backtrace();
// Unset call to debug_print_backtrace
array_shift($backtrace);
// Iterate backtrace
$calls = array();
$depth = count($backtrace) - 1;
foreach ($backtrace as $i => $call) {
$location = $call['file'] . ':' . $call['line'];
$function = (isset($call['class'])) ?
$call['class'] . $call['type'] . $call['function'] : $call['function'];
$params = array();
if (isset($call['args'])){
foreach($call['args'] as $arg){
if(is_object($arg)){
$params[] = '[Object '.get_class($arg).']';
}elseif(is_array($arg)){
$params[] = '[Array]';
}elseif(is_null($arg)){
$param[] = '[NULL]';
}else{
$params[] = (string) '"'.$arg.'"';
}
}
}
$params = implode(', ',$params);
$calls[$depth - $i] = sprintf('%s(%s) called at %s',
$function,
str_replace("\n", '\n', $params),
$location);
}
ksort($calls);
return implode("\n", $calls);
}
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