*/ if(!defined('DOKU_INC')) die('meh.'); 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 */ 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 DokuWiki's version (split up in date and type) * * @author Andreas Gohr */ function getVersionData(){ $version = array(); //import version string if(@file_exists(DOKU_INC.'VERSION')){ //official release $version['date'] = trim(io_readfile(DOKU_INC.'VERSION')); $version['type'] = 'Release'; return $version; }elseif(is_dir(DOKU_INC.'_darcs')){ if(is_file(DOKU_INC.'_darcs/inventory')){ $inventory = DOKU_INC.'_darcs/inventory'; }elseif(is_file(DOKU_INC.'_darcs/hashed_inventory')){ $inventory = DOKU_INC.'_darcs/hashed_inventory'; }else{ $version['date'] = 'unknown'; $version['type'] = 'Darcs'; return $version; } //darcs checkout - read last 2000 bytes of inventory $sz = filesize($inventory); $seek = max(0,$sz-2000); $fh = fopen($inventory,'rb'); fseek($fh,$seek); $chunk = fread($fh,2000); fclose($fh); preg_match_all('#\*\*(\d{4})(\d{2})(\d{2})\d{6}(?:\]|$)#m', $chunk, $matches, PREG_SET_ORDER); $version['date'] = implode('-', array_slice(array_pop($matches), 1)); $version['type'] = 'Darcs'; return $version; }else{ $version['date'] = 'unknown'; $version['type'] = 'snapshot?'; return $version; } } /** * Return DokuWiki's version (as a string) * * @author Anika Henke */ function getVersion(){ $version = getVersionData(); return $version['type'].' '.$version['date']; } /** * Run a few sanity checks * * @author Andreas Gohr */ function check(){ global $conf; global $INFO; msg('DokuWiki version: '.getVersion(),1); if(version_compare(phpversion(),'5.1.2','<')){ msg('Your PHP version is too old ('.phpversion().' vs. 5.1.2+ needed)',-1); }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); if(ini_get('mbstring.func_overload') != 0){ msg('mb_string function overloading is enabled, this will cause problems and should be disabled',-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); } require_once(DOKU_INC.'inc/HTTPClient.php'); $check = wl('','',true).'data/_dummy'; $http = new DokuHTTPClient(); $http->timeout = 6; $res = $http->get($check); if(strpos($res,'data directory') !== false){ msg('It seems like the data directory is accessible from the web. Make sure this directory is properly protected (See security)',-1); }elseif($http->status == 404 || $http->status == 403){ msg('The data directory seems to be properly protected',1); }else{ msg('Failed to check if the data directory is accessible from the web. Make sure this directory is properly protected (See security)',-1); } } /** * print a message * * If HTTP headers were not sent yet the message is added * to the global message array else it's printed directly * using html_msgarea() * * * Levels can be: * * -1 error * 0 info * 1 success * * @author Andreas Gohr * @see html_msgarea */ function msg($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) $message"; } } } /** * print debug messages * * little function to print the content of a var * * @author Andreas Gohr */ function dbg($msg,$hidden=false){ (!$hidden) ? print '
' : print "";
}

/**
 * Print info to a log file
 *
 * @author Andreas Gohr 
 */
function dbglog($msg,$header=''){
    global $conf;
    if(is_object($msg) || is_array($msg)){
        $msg = print_r($msg,true);
    }

    if($header) $msg = "$header\n$msg";

    $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 
 */
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);
}

/**
 * Remove all data from an array where the key seems to point to sensitive data
 *
 * This is used to remove passwords, mail addresses and similar data from the
 * debug output
 *
 * @author Andreas Gohr 
 */
function debug_guard(&$data){
    foreach($data as $key => $value){
        if(preg_match('/(notify|pass|auth|secret|ftp|userinfo|token|buid|mail|proxy)/i',$key)){
            $data[$key] = '***';
            continue;
        }
        if(is_array($value)) debug_guard($data[$key]);
    }
}