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<?php

/**
* ownCloud - ajax frontend
*
* @author Robin Appelman
* @copyright 2010 Robin Appelman icewind1991@gmail.com
* 
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either 
* version 3 of the License, or any later version.
* 
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*  
* You should have received a copy of the GNU Affero General Public 
* License along with this library.  If not, see <http://www.gnu.org/licenses/>.
* 
*/
require_once('../inc/lib_base.php');

function return_bytes($val) {
    $val = trim($val);
    $last = strtolower($val[strlen($val)-1]);
    switch($last) {
        // The 'G' modifier is available since PHP 5.1.0
        case 'g':
            $val *= 1024;
        case 'm':
            $val *= 1024;
        case 'k':
            $val *= 1024;
    }

    return $val;
}

// header('Content-type: text/plain');
header('Content-type: application/xml');

$dir=isset($_GET['dir'])?$_GET['dir']:'';
$files=OC_FILES::getdirectorycontent($dir);
$dirname=(isset($files[0]))?$files[0]['directory']:'';
$dirname=substr($dirname,strrpos($dirname,'/'));
$max_upload=min(return_bytes(ini_get('post_max_size')),return_bytes(ini_get('upload_max_filesize')));
ob_clean();
echo "<?xml version='1.0' encoding='UTF-8' standalone='yes'?>\n";
echo "<dir name='$dirname' max_upload='$max_upload'>\n";
if(is_array($files)){
	foreach($files as $file){
	$attributes='';
	foreach($file as $name=>$data){
		$data=utf8_encode($data);
		$data=utf8tohtml($data);
		$data=str_replace("'",'&#39;',$data);
		if (is_string($name)) $attributes.=" $name='$data'";
	}
	$attributes.=' date=\''.date($CONFIG_DATEFORMAT,$file['mtime']).'\'';
	echo "<file$attributes/>\n";
	}
}
echo "</dir>";

// converts a UTF8-string into HTML entities
//  - $utf8:        the UTF8-string to convert
//  - $encodeTags:  booloean. TRUE will convert "<" to "&lt;"
//  - return:       returns the converted HTML-string
function utf8tohtml($utf8, $encodeTags=true) {
    $result = '';
    for ($i = 0; $i < strlen($utf8); $i++) {
        $char = $utf8[$i];
        $ascii = ord($char);
        if ($ascii < 128) {
            // one-byte character
            $result .= ($encodeTags) ? htmlentities($char) : $char;
        } else if ($ascii < 192) {
            // non-utf8 character or not a start byte
        } else if ($ascii < 224) {
            // two-byte character
            $result .= htmlentities(substr($utf8, $i, 2), ENT_QUOTES, 'UTF-8');
            $i++;
        } else if ($ascii < 240) {
            // three-byte character
            $ascii1 = ord($utf8[$i+1]);
            $ascii2 = ord($utf8[$i+2]);
            $unicode = (15 & $ascii) * 4096 +
                       (63 & $ascii1) * 64 +
                       (63 & $ascii2);
            $result .= "&#$unicode;";
            $i += 2;
        } else if ($ascii < 248) {
            // four-byte character
            $ascii1 = ord($utf8[$i+1]);
            $ascii2 = ord($utf8[$i+2]);
            $ascii3 = ord($utf8[$i+3]);
            $unicode = (15 & $ascii) * 262144 +
                       (63 & $ascii1) * 4096 +
                       (63 & $ascii2) * 64 +
                       (63 & $ascii3);
            $result .= "&#$unicode;";
            $i += 3;
        }
    }
    return $result;
}
?>