php 文件类(file browser)

<?php
date_default_timezone_set('Asia/Shanghai');
class Browser {
    const cUsername = "admin";
    const cPassword = "password";
    public $separator, $sMessage = 0, $sError = 0;
    private $aPlainText = array('as','asp','aspx','atom','bat','cfm','cmd','hta','htm','html','js','jsp','java','mht','php','pl','py','rb','rss','sh','txt','xhtml','xml','log','out','ini','shtml','xsl','xslt','backup');
    private $aImageType = array('bm','bmp','ras','rast','fif','flo','turbot','g3','gif','ief','iefs','jfif','jfif-tbnl','jpe','jpeg','jpg','jut','nap','naplps','pic','pict','jfif','jpe','jpeg','jpg','png','x-png','tif','tiff','mcf','dwg','dxf','svf','fpx','fpx','rf','rp','wbmp','xif','xbm','ras','dwg','dxf','svf','ico','art','jps','nif','niff','pcx','pct','xpm','pnm','pbm','pgm','pgm','ppm','qif','qti','qtif','rgb','tif','tiff','bmp','xbm','xbm',
'pm','xpm','xwd','xwd');

    public function __construct($bAuth){
        if ($bAuth) {
            if ($_POST['button'] == 'Login') {
   if (($_POST['username'] == self::cUsername) && ($_POST['password'] == self::cPassword)) {
       $_SESSION['auth'] = "1";
   }else{
       $_SESSION['auth'] = "0";
   }
            }
            if (!$_SESSION['auth']) {
   $sHtml = "<form method="post">
           <table style="background-color:#ffffff; padding: 1em; border:1px solid #000000;" border="0" cellpadding="0" cellspacing="2" width="200" align="center">
  <tr>
      <td style="background-color:#F1F1F1" colspan="2">Login</td>
  </tr>
  <tr>
      <td>Username</td>
      <td><input type="text" name="username" id="username"/></td>
  </tr>
  <tr>
      <td>Password</td>
      <td><input type="password" name="password" id="password"/></td>
  </tr>
  <tr>
      <td></td>
      <td><input type="submit" name="button" id="button" value="Login"/></td>
  </tr>
           </table>
           </form>";
   echo $sHtml;
   die();
            }
        }
        if (strtoupper(substr(PHP_OS, 0, 3) == 'WIN')) {
            $this->separator = "";
        } else {
            $this->separator = "/";
        }  
    }
    public function downloadFile($file){
        header ("Cache-Control: must-revalidate, post-check=0, pre-check=0");
        header('Content-Description: File Transfer');
        header('Content-Length: ' . filesize($file));
        header('Content-Disposition: attachment; filename=' . basename($file));
        header('Content-Type: application/octet-stream');
        readfile($file);
    }
    public function fileName($file, $dir){
        if (filetype($dir.$file) != "dir") {
            $sLink = "<a href="browser.php?view=".urlencode($dir.$file)."">$file</a>";
        }
        else{
            $aCurrentPath = explode($this->separator, $dir);
            $iCount = (count($aCurrentPath) -2);
            for ($i = 0; $i < $iCount; ++$i) {
   $sFullPath .= $aCurrentPath[$i].$this->separator;
            }
            if ($file == '.') {
   $sLink = "<a href="browser.php?dir=".$this->separator."">[ ".$this->separator." ]</a>";
            }elseif ($file == '..') {
   $sLink = "<a href="browser.php?dir=".$sFullPath."">[ ".$this->separator." ".$this->separator." ]</a>";
            }
            else{
   $sLink = "<a href="browser.php?dir=".urlencode($dir.$file)."">$file</a>";
            }
        }
        return $sLink;
    }
    public function showDownload($file, $dir = ""){
        if (filetype($dir.$file) != "dir") {
            return "<a href="browser.php?dwl=urlencode($dir$file)">Download</a>";
        }else{
            return '';
        }
    }
    public function showEdit($file, $dir){
        if (filetype($dir.$file) != "dir") {
            $sExt = strtolower(substr(strrchr($file,'.'),1));
            if ($sExt == 'zip') {
   $sLink = "<a href="browser.php?extract=urlencode($dir$file)">Unpack</a>";
            }else{
   $sLink = "<a href="browser.php?edit=urlencode($dir$file)" target="_new">Edit</a>";
            }
        }
        return $sLink;
    }
    public function showFileSize($file, $dir, $precision = 2) {
        if (filetype($dir.$file) != "dir") {
            return $this->formatSize(filesize($dir.$file));
        }else{
            return "Dir";
        }
    }
    private function formatSize($bytes, $precision = 2) {
        $units = array('B', 'KB', 'MB', 'GB', 'TB');
        $bytes = max($bytes, 0);
        $pow = floor(($bytes ? log($bytes) : 0) / log(1024));
        $pow = min($pow, count($units) - 1);
        $bytes /= pow(1024, $pow);
        return round($bytes, $precision) . ' ' . $units[$pow];
    }
    public function dateFormat($iTimestamp) {
        return date("F j, Y, g:i a", $iTimestamp);
    }
    public function delete_directory($dirname) {
        if (is_dir($dirname))
            $dir_handle = opendir($dirname);
        if (!$dir_handle)
            return false;
        while($file = readdir($dir_handle)) {
            if ($file != "." && $file != "..") {
   if (!is_dir($dirname."/".$file))
       if (@unlink($dirname."/".$file)) {
           $this->sMessage = "Directory Deleted Successfully: "".$dirname."" .";
       }
       else{
           $this->sError = "Can't Deleted Directory "".$dirname."" .";
       }
       else
           $this->delete_directory($dirname.'/'.$file);         
            }
        }
        closedir($dir_handle);
        rmdir($dirname);
        return true;
    }
    public function viewFile($file){
        $sBaseName = basename($file);
        $sExt = strtolower(substr(strrchr($sBaseName,'.'),1));
        if ($sExt == "zip") {
            $oZip = new ZipArchive;
            if ($oZip->open($file) === TRUE) {
   echo "<table cellspacing="1px" cellpadding="0px">";
   echo "<tr><th>Name</th><th>Uncompressed size</th><th>Compressed size</th><th>Compr. ratio</th><th>Date</th></tr>";
   for ($i=0; $i<$oZip->numFiles;$i++) {
       $aZipDtls = $oZip->statIndex($i);
       $iPercent = round($aZipDtls['comp_size'] * 100 / $aZipDtls['size']);
       $iUncompressedSize = $aZipDtls['size'];
       $iCompressedSize = $aZipDtls['comp_size'];
       $iTotalPercent += $iPercent;
       echo "<tr><td>".$aZipDtls['name']."</td><td>".$this->formatSize($iUncompressedSize)."</td><td>".$this->formatSize($iCompressedSize)."</td><td>".$iPercent."%</td><td>".$this->dateFormat($aZipDtls['mtime'])."</td></tr>";
   }
   echo "</table>";
   echo "<p align="center"><b>".$this->showFileSize($file, $dir)." in ".$oZip->numFiles." files in ".basename($oZip->filename).". Compression ratio: ".round($iTotalPercent / $oZip->numFiles)."%</b></p>";
   $oZip->close();
            } else {
   echo 'failed';
            }
        }elseif (in_array($sExt, $this->aPlainText)) {
            header ("Cache-Control: must-revalidate, post-check=0, pre-check=0");
            header('Content-Description: File View');
            header('Content-Length: ' . filesize($file));
            header('Content-Disposition: inline; filename=' . basename($file));
            header('Content-Type: text/plain');
            readfile($file);
        }elseif(in_array($sExt, $this->aImageType)){
            header ("Cache-Control: must-revalidate, post-check=0, pre-check=0");
            header('Content-Description: File View');
            header('Content-Length: ' . filesize($file));
            header('Content-Disposition: inline; filename=' . basename($file));
            header('Content-Type: image/jpg');
            readfile($file);
        }else{
            $this->downloadFile($file);
        }
    }
    public function deleteFiles($aFiles){
        if (is_array($aFiles)) {
            foreach ($aFiles as $aFilesNames){
   if (is_dir($dir.$aFilesNames)) {
       $this->delete_directory($dir.$aFilesNames);
   }
   else{
       if (@unlink($dir.$aFilesNames)) {
           $this->sMessage = "File Deleted Successfully: "".$dir.$aFilesNames."" .";
       }else{
           $this->sError = "Can't Deleted file "".$dir.$aFilesNames."" .";
       }
   }
            }
        }
    }
    public function createFile($dir, $sCreatefile){
        if (!file_exists($dir.$sCreatefile)) {
            if (is_writable($dir)) {
   $handle = fopen($dir.$sCreatefile, "w");
   fclose($handle);
   $this->sMessage = "File Created Successfully: "$sCreatefile" .";
            }else{
   $this->sError = "Directory Not Writable, Can't Create file.";
            }
        }
        else{
            $this->sError = " "$sCreatefile" File already exist.";
        }
    }
    private function writeBackup($sFileName){
        if (!copy($sFileName, $sFileName.".backup")) {
            return false;
        }
        return true;
    }  
    public function fileWriter($sFile, $string, $backup = false) {
        if ($backup) {
            $this->writeBackup($sFile);
        }
        $fp = fopen($sFile,"w");
        //Writing to a network stream may end before the whole string is written. Return value of fwrite() is checked
        for ($written = 0; $written < strlen($string); $written += $fwrite) {
            $fwrite = fwrite($fp, substr($string, $written));
            if (!$fwrite) {
   return $fwrite;
            }
        }
        fclose($fp);
        return $written;
    }
    public function createDirectory($dir, $sCreatefile){
        if (!is_dir($dir.$sCreatefile)) {
            mkdir($dir.$sCreatefile, 0755);
            $this->sMessage = "Directory Created Successfully: "$dir" .";
        }else{
            $this->sError = ""$dir" Directory already exist.";
        }
    }
    public function extract($sExtract){
        $path_parts = pathinfo($sExtract);
        if (is_writable($path_parts['dirname'])) {
            $zip = new ZipArchive;
            if ($zip->open($sExtract) === TRUE) {
   $zip->extractTo($path_parts['dirname']);
   $zip->close();
   echo 'ok';
            } else {
   echo 'failed';
            }
        }
        else{
            $this->sError = """.$path_parts['dirname']."" Directory is not writable..";
        }
    }
    public function uploadFile($dir, $sFileName){
        if (move_uploaded_file($_FILES['myfile']['tmp_name'], $dir.$sFileName)) {
            $this->sMessage = ""$sFileName" File Successfully Uploaded.";
        }
        else{
            $this->sError = ""$sFileName" Uploading Error.";
        }
    }
    public function getCurrentDir($dir){
        $aCurrentPath = explode($this->separator, $dir);
        $iCount = (count($aCurrentPath) -1);
        for ($i = 0; $i < $iCount; ++$i) {
            $sFullPath .= $aCurrentPath[$i].$this->separator;
            echo "<a href="browser.php?dir=".urlencode($sFullPath).""><strong>".$aCurrentPath[$i]."<strong></a>".$this->separator;
        }
    }
    public function readContent($sEdit, &$contents = null){
        if (file_exists($sEdit)) {
            $handle = fopen($sEdit, "r");
            if ($handle) {
   while (!feof($handle)) {
       $contents .= fgets($handle, 4096);
   }
   fclose($handle);
            }
        }
    }
}

<?php
ob_start();
session_start();
function __autoload($class_name) { require_once $class_name . '.Class.php';}
$oBrowser = new Browser(true);

$dir = trim($_REQUEST['dir']);
$sEdit = trim($_REQUEST['edit']);
$sExtract = trim($_REQUEST['extract']);
$sViewFile = trim($_REQUEST['view']);

if (!$dir) {
    $dir    = getcwd().$oBrowser->separator;
}else{
    $dir = trim($_REQUEST['dir']).$oBrowser->separator;
}

$dir = str_replace($oBrowser->separator.$oBrowser->separator, $oBrowser->separator, $dir);

if ($_POST['button'] == "Delete Selected Files") {
    $aFiles = $_POST['chkfiles'];
    $oBrowser->deleteFiles($aFiles);
}

if ($_POST['button'] == "Create File") {
    $sCreatefile = trim($_POST['createfile']);
    $oBrowser->createFile($dir, $sCreatefile);
}
if ($_POST['button'] == "Create Directory") {
    $oBrowser->createDirectory($dir, trim($_POST['createfile']));
}
$sDownloadFile = trim($_REQUEST['dwl']);
if ($sDownloadFile) {
    $oBrowser->downloadFile($sDownloadFile);
    exit;
}
if ($sExtract != "") {
    $oBrowser->extract($sExtract);
}
if ($_POST['button'] == 'SAVEFILE') {
    $bBackup = trim($_POST['Write_backup']);
    $sFileData = trim($_POST['editfile']);
    $oBrowser->fileWriter($sEdit, $sFileData, $bBackup);
}
$sFileName = $_FILES['myfile']['name'];
if ($sFileName) {
    $oBrowser->uploadFile($dir, $sFileName);  
}
if ($sViewFile) {
    $oBrowser->viewFile($sViewFile);
    exit;
}
$sFiles = scandir(urldecode($dir));

?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
<meta name="robots" content="noindex">
<meta http-equiv="expires" content="0">
<meta http-equiv="pragma" content="no-cache">
<style type="text/css">
body {font-family:sans-serif; font-size: 10pt; color: #000000;}
    input {background-color: #efefef; color: #000000;}
.border {margin: 1px; background-color:#ffffff; padding: 1em; border:1px solid #000000;}
    a {text-decoration:none; }
    a:hover { color : red; text-decoration : underline; }
    table.filelisting {background-color:#000000; width:100%; border:0px none #ffffff;}
th {background-color:#f1f1f1;}
    td{background-color:#ffffff;padding-left:5px;font-family:sans-serif; font-size: 9pt; color: #000000;}
    .message{border: 1px solid #ffaaaa;background-color: #acffaa;padding:3px 3px 3px 5px;font-size: 9pt;color:#000;text-align:center;}
    .error{border: 1px solid #acffaa;background-color: #ffaaaa;padding:3px 3px 3px 5px;font-size: 10pt;color:#000;text-align:center;}
</style>
<script type="text/javascript">
    function filter (begriff) {
        var suche = begriff.value.toLowerCase();
        var table = document.getElementById("filetable");
        var ele;
        for(var r = 1; r < table.rows.length; r++) {
            ele = table.rows[r].cells[1].innerHTML.replace(/<[^>]+>/g,"");
            if(ele.toLowerCase().indexOf(suche)>=0 )
   table.rows[r].style.display = '';
            else table.rows[r].style.display = 'none';
        }
    }
    function selectAll(obj) {
        var oFileList = obj.elements['chkfiles[]'];
        for(i=0; i < oFileList.length; ++i) {
            if(obj.selall.checked == true)
   oFileList[i].checked = true;
            else
   oFileList[i].checked = false;
        }
    }
</script>
<title>PHP File Browser V. 1.1</title>
</head>
<body>
<?php
if ($oBrowser->sError) {
    echo "<p class="error">".$oBrowser->sError."</p>";
}
if ($oBrowser->sMessage) {
    echo "<p class="message">".$oBrowser->sMessage."</p>";
}
?>
<?php
if ($_GET['cmd'] == 'ssh') {
    $sSsh_command = trim($_POST['ssh_command']);
    if ($sSsh_command) {
        $aResult = array();
        exec($sSsh_command, $aResult);
    }
?>
<div>
<div>
<form name="frmSsh" method="post">
Command: <input type="text" value="<?php echo stripslashes($_POST['ssh'])?>" name="ssh_command"  size="70"><input type="submit" value="GO"/>
</form>
</div>
<br/>
<div>
<?php
 if (is_array($aResult)) {
    foreach ($aResult as $resultVal){
        echo $resultVal."<br/>";
    }
}
?>
</div>
</div>
<?php
}
elseif($sEdit != "") {
    $oBrowser->readContent($sEdit, $contents);
?>
<div>
<div class="border">
<form name="frmedit" method="post">
<p>
<strong>File Name: <?php echo basename($sEdit)?></strong>
</p>
<textarea name="editfile" style="height:400px;width:100%"><?php echo htmlentities($contents)?></textarea>
<p>
<input type="text" name="button" value="SAVEFILE" style="display:none"/>
<input type="checkbox" name="Write_backup" value="1" id="Write_backup" title="Write backup"/>
<label for="Write_backup">
<strong>Write backup</strong>
</label>
<br/>
</p>
<p>
<input type="submit" value="SAVE"/>
</p>
</form>
</div>
</div>
<?php }else{?>
<div>
<div class="border">
<form action="browser.php" method="POST" enctype="multipart/form-data">
<p>
<input type="text" name="dir" value="<?php echo $dir;?>" style="display:none"/>
<input type="file" onKeypress="event.cancelBubble=true;" name="myfile">
<input title="Upload selected file to the current working directory" type="Submit"  name="Submit" value="Upload"/>
</p>
<p>
<input type="button" name="button" value="Launch Shell Program"  onclick="window.location = 'browser.php?cmd=ssh'">
</p>
</form>
</div>
<br/>
<form action="browser.php" method="Post" name="filelist" class="border">
Filename filter:
<input name="filt" onKeypress="event.cancelBubble=true;" onkeyup="filter(this)" type="text">
<br />
<br />
<table id="filetable" border="0" cellpadding="0px" cellspacing="1px" width="100%" class="filelisting">
<tr >
<th></th>
<th>Name</th>
<th>Size</th>
<th>Type</th>
<th>Date</th>
<th>&nbsp;</th>
<th>&nbsp;</th>
</tr>
<?php
if (is_array($sFiles)) {
    foreach ($sFiles as $file){
        //if ($file != "." && $file != "..") {
?>   
<tr >
<td>
<?php if ($file != "." && $file != "..") {?><input type="checkbox" id="chkfiles[]" name="chkfiles[]" value="<?php echo $file?>"/><?php } ?>
</td>
<td><?php echo $oBrowser->fileName($file, $dir);?></td>
<td><?php echo $oBrowser->showFileSize($file, $dir);?></td>
<td><?php echo substr(strrchr($dir.$file,'.'),1);?></td>
<td><?php $aFileInfo = stat($dir.$file); echo $oBrowser->dateFormat($aFileInfo['atime'])?></td>
<td><?php echo $oBrowser->showDownload($file, $dir);?></td>
<td><?php echo $oBrowser->showEdit($file, $dir);?></td>
</tr>
<?php } } ?>
           
<tr >
<td colspan="7">
<input type="checkbox" id="selall" name="selall" onClick="selectAll(this.form)">
<label for="selall">
Select All
</label>
</td>
</tr>
</table>
<br/>
<p>
<input type="text" name="dir" value="<?php echo $dir;?>" style="display:none"/>
<input title="Delete selected files and directories."  type="Submit" onclick="return confirm('Are you sure want to delete selected files');" name="button" value="Delete Selected Files">
<!--input title="Download selected files and directories as one zip file"  id="but_Zip" type="Submit" name="Submit" value="Download selected files as zip"-->
</p>
<p>
Current Location: <?php echo $oBrowser->getCurrentDir($dir); ?>

</p>
<p>
<input type="text" name="createfile">
<input title="Create directory."  type="Submit" name="button" value="Create Directory">
&nbsp;
<input title="Create File."  type="Submit" name="button" value="Create File">
</p>
</form>
</div>
<?php }?>
</body>
</html>