Location: PHPKode > scripts > IZI Filemanager > izi-filemanager/includes/fileman.class.php
<?php

class file {
  var $stat	= array();
  var $pathinfo	= array();
  var $name;
  var $path;
  var $dirname;
  var $basename;
  var $extension;
  var $size;
  var $size_h;
  var $read;
  var $write;
  var $execute;
  var $mime;
  
  ////
  //  function file
  //  (Constructor) Reads the rights and sets the default value for a file
  ////
  
  function file ($file) {
    $this->stat		= stat($file);
    $this->pathinfo	= pathinfo($file);
    $this->dirname	= $this->pathinfo["dirname"];
    $this->basename	= $this->pathinfo["basename"];
    $this->extension	= strtolower($this->pathinfo["extension"]);
    $this->size		= $this->stat[7];
    $this->uid		= $this->stat[4];
    $this->gid		= $this->stat[5];
    $this->date		= $this->stat[9];
    
    if (!ereg("/$", $this->dirname )) $this->dirname  .= "/";
    
    // Create a human readable file size
    if ($this->size < 1024)		$this->size_h = $this->size . " bytes";
    if ($this->size > 1024)		$this->size_h = round($this->size / 1024, 2) . " KB";
    if ($this->size > 1048576)		$this->size_h = round($this->size / 1048576, 2) . " MB";
    if ($this->size > 1073741824)	$this->size_h = round($this->size / 1073741824, 2) . " GB";
    
    $this->read    = false;
    $this->write   = false;
    $this->execute = false;
    if (is_readable($file))   $this->read = true;
    if (is_writable($file))   $this->write = true;
    if (is_executable($file)) $this->execute = true;
    clearstatcache();
    
    // aliasses
    $this->name = $this->basename;
    $this->path = $this->dirname;
    if (strlen($this->extension) > 10) $this->extension = "";
  }
  
  function get_mime() {
    $verify = TRUE;
    $fn = $this->dirname . $this->name;
    
    if (empty($fn)) { 
      return ""; 
    } 

    if ($verify) { 
      if ($fp = @fopen($fn, "rb")) { 
        $fcont = fread($fp, 32); 
        fclose($fp); 
      } else { 
        return ""; 
      } 
    } 

    $ext = $this->extension;

    switch ($ext) { 
      case "aif": 
      case "aifc": 
      case "aiff": 
        return "audio/aiff"; 

      case "asp": 
        return "text/asp"; 

      case "avi": 
        return "video/avi" . 
          (!$verify || (substr($fcont, 0, 4) == "RIFF") ? "" : "*"); 
          
      case "mpg":
      case "mpeg": 
        return "video/mpeg";

      case "wmv": 
        return "video/windows-media";

      case "bmp": 
        return "image/bmp" . 
          (!$verify || (substr($fcont, 0, 2) == "BM") ? "" : "*"); 

      case "css": 
        return "text/css"; 

      case "doc": 
        return "application/msword" . 
          (!$verify || 
          (substr($fcont, 0, 8) == "\xD0\xCF\x11\xE0\xA1\xB1\x1A\xE1") ? 
                 "" : "*"); 

      case "exe": 
      case "dll": 
      case "scr": 
        return "application/x-msdownload" . 
          (!$verify || (substr($fcont, 0, 2) == "MZ") ? "" : "*"); 

      case "hlp": 
        return "application/windows-help" .
          (!$verify || 
          (substr($fcont, 0, 4) == "\x3F\x5F\x03\x00") ? "" : "*"); 

      case "htm": 
      case "html": 
        return "text/html" .
          (!$verify || 
          (substr($fcont, 0, 6) == "<html>") || 
          (substr($fcont, 0, 14) == "<!DOCTYPE HTML") ? 
          "" : "*"); 

      case "gif": 
        return "image/gif" .
          (!$verify || (substr($fcont, 0, 3) == "GIF") ? "" : "*"); 

      case "gz": 
      case "tgz": 
        return "application/x-gzip" .
          (!$verify || (substr($fcont, 0, 3) == "\x1F\x8B\x08") ? "" : "*"); 

      case "jfif": 
      case "jpe": 
      case "jpeg": 
      case "jpg": 
        return "image/jpeg" .
         (!$verify || 
         (substr($fcont, 0, 10) == "\xFF\xD8\xFF\xE0\x00\x10JFIF") ? 
          "" : "*"); 

      case "mov": 
        return "video/quicktime"; 

      case "pdf": 
        return "application/pdf" .
          (!$verify || (substr($fcont, 0, 4) == "%PDF") ? "" : "*"); 

      case "php": 
      case "php3": 
      case "php4": 
      case "phtml": 
        return "application/x-httpd-php" .
          (!$verify || (substr($fcont, 0, 5) == "<?") ? "" : "*"); 

      case "pl": 
        return "text/perl" .
          (!$verify || 
          (substr($fcont, 0, 21) == "#!/usr/local/bin/perl") ? "" : "*"); 

      case "png": 
        return "image/x-png" .
          (!$verify || (substr($fcont, 0, 4) == "\x89PNG") ? "" : "*"); 

      case "psd": 
        return "image/psd" .
          (!$verify || (substr($fcont, 0, 4) == "8BPS") ? "" : "*"); 

      case "tiff": 
      case "tif": 
        return "image/tiff" . 
          (!$verify || 
          (substr($fcont, 0, 8) == "\x4D\x4D\x00\x2A\x00\x00\x00\x08") || 
          (substr($fcont, 0, 4) == "\x49\x49\x2A\x00") ? 
          "" : "*"); 

      case "ttf": 
        return "application/x-ttf"; 

      case "txt":
      case "ini":
      case "log":
      case "sql":
      case "cfg":
      case "conf":
      case "tpl":
        return "text/plain"; 

      case "swf":
        return "application/x-shockwave-flash";


      case "wav": 
        return "audio/x-wav" .
          (!$verify || (substr($fcont, 0, 4) == "RIFF") ? "" : "*"); 

      case "wma": 
        return "audio/x-ms-wma"; 
        
      case "mp3": 
        return "audio/x-mp3"; 

      case "xml": 
        return "text/xml" .
          (!$verify || (substr($fcont, 0, 5) == "<?xml") ? "" : "*"); 

      case "zip": 
        return "application/x-zip-compressed" .
          (!$verify || (substr($fcont, 0, 2) == "PK") ? "" : "*"); 
    } 
    return ""; 
  } 
}

class dir {
  var $stat	= array();
  var $pathinfo	= array();
  var $name;
  var $path;
  var $dirname;
  var $dirname;
  var $basename;
  var $size;
  var $read;
  var $write;
  var $execute;

  ////
  //  function dir
  //  (Constructor) Reads the rights and sets the default value for a directory
  ////

  function dir ($dir) {
    $this->stat		= stat($dir);
    $this->pathinfo	= pathinfo($dir);
    $this->size		= $this->stat[7];
    $this->uid		= $this->stat[4];
    $this->gid		= $this->stat[5];
    $this->date		= $this->stat[9];
    $this->dirname	= $this->pathinfo["dirname"];
    $this->basename	= $this->pathinfo["basename"];
    
    $this->read = false;
    $this->write = false;
    $this->execute = false;
    if (is_readable($dir))	$this->read = true;
    if (is_writable($dir))	$this->write = true;
    if (is_executable($dir)) $this->execute = true;
    clearstatcache();
    
    // aliasses
    $this->name = $this->basename;
    $this->path = $this->dirname;
  }
}

class fileman {

  var $files		= array();
  var $directories	= array();
  var $base_dir;
  var $sub_dir;
  var $dir_obj;
  var $error_strings	= array();
  var $complete_path;
  var $readable;
  var $sort_order;
  
  ////
  //  function fileman
  //  (Constructor) Reads the rights, sets the default value for a directory and starts the dir read loop.
  ////
  
  function fileman ($base_dir, $sub_dir) {
    // Add final slashes do the dirs in ARGS and create a full string.
    if (!ereg("/$", $base_dir)) $base_dir .= "/";
    if (!ereg("/$", $sub_dir )) $sub_dir  .= "/";
    $this->sub_dir		 = $sub_dir;
    $this->base_dir		 = $base_dir;
    $this->complete_path = $base_dir . $sub_dir;
    
    // Checks if given dir is a valid one and is readable.
    if (!is_dir($this->complete_path))		$this->error("Not a valid directory.");
    if (strstr($this->sub_dir, "../"))		$this->error("Path contains a '../' string, this is not permited due to security issues.");
    if (!is_readable($this->complete_path)) {
      $this->error("$sub_dir is not a readable directory.");
      $this->readable = false;
    } else {
      $this->readable = true;
    }
    
    $this->check_errors();
    $this->read_directory();
    return true;
  }
  
  ////
  //  function read_directory
  //  Reads the current directory and calls the file and dir classes.
  ////
  
  function read_directory () {
    $dir_counter = 0;
    $file_counter = 0;
    $this->dir_obj = opendir($this->complete_path);
    while (FALSE !== ($object = readdir($this->dir_obj))) {
      if ($object == ".")  continue;
      if ($object == "..") continue;
      
      if (is_file($this->complete_path . $object)) {
      	$file_counter++;
        $this->files[$file_counter] = new file ($this->complete_path . $object);
      }
      if (is_dir($this->complete_path . $object)) {
      	$dir_counter++;
        $this->directories[$dir_counter] = new dir ($this->complete_path . $object);
      }
    }
    closedir($this->dir_obj);
  }
  
  ////
  //  function sort
  //  Sorts the file and directory listing to to the string specified (name, extension, size, date)
  ////
  
  function sort ($sort, $sort_direction="up") {
    $this->sort_order = $sort;
    if ($sort_direction == "") $sort_direction = "down";
    if ($sort_direction == "down") {
      usort($this->files, 	array ($this, "compare"));
      usort($this->directories, 	array ($this, "compare"));
    } else {
      usort($this->files,   array ($this, "compare_up"));
      usort($this->directories,   array ($this, "compare_up"));      
    }
  }
  
  // File sorting part, used by sort function.
  function compare ($a, $b) {
    if ($this->sort_order == "name")		return strcasecmp($a->name, $b->name);
    if ($this->sort_order == "extension")	return strcasecmp($a->extension, $b->extension);
    if ($this->sort_order == "date")		return strcasecmp($a->date, $b->date);
    if ($this->sort_order == "size")		return ($a->size > $b->size) ? 1 : -1;
    return strcasecmp($a->name, $b->name);
  }
  
  function compare_up ($b, $a) {
    if ($this->sort_order == "name")    return strcasecmp($a->name, $b->name);
    if ($this->sort_order == "extension") return strcasecmp($a->extension, $b->extension);
    if ($this->sort_order == "date")    return strcasecmp($a->date, $b->date);
    if ($this->sort_order == "size")    return ($a->size > $b->size) ? 1 : -1;
    return strcasecmp($a->name, $b->name);
  }
  
  ////
  //  function error
  //  Adds error to the error string.
  ////
  
  function error ($string) {
    $this->error_strings[] = $string;
  }
  
  ////
  //  function check_error
  //  Checks if any errors were found. and takes action.
  ////
  
  function check_errors () {
    if (count($this->error_strings) > 0) {
      foreach ($this->error_strings as $error) { print $error . "<BR>"; }
      print "Errors found: " . count($this->error_strings) . "<P>";
      exit;
    } else {
      return true;
    }
  }
} 
// END OF MAIN CLASS

?>
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