update pMachine to EllisLab

update copyright year
update Code Igniter to CodeIgniter

1 files changed, 808 insertions, 808 deletions

diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index ff0fb1cb9..564e29937 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -1,809 +1,809 @@
-<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');
-/**
- * Code Igniter
- *
- * An open source application development framework for PHP 4.3.2 or newer
- *
- * @package		CodeIgniter
- * @author		Rick Ellis
- * @copyright	Copyright (c) 2006, pMachine, Inc.
- * @license		http://www.codeignitor.com/user_guide/license.html
- * @link		http://www.codeigniter.com
- * @since		Version 1.0
- * @filesource
- */
-
-// ------------------------------------------------------------------------
-
-/**
- * File Uploading Class
- *
- * @package		CodeIgniter
- * @subpackage	Libraries
- * @category	Uploads
- * @author		Rick Ellis
- * @link		http://www.codeigniter.com/user_guide/libraries/file_uploading.html
- */
-class CI_Upload {
-	
-	var $max_size		= 0;
-	var $max_width		= 0;
-	var $max_height		= 0;
-	var $allowed_types	= "";
-	var $file_temp		= "";
-	var $file_name		= "";
-	var $orig_name		= "";
-	var $file_type		= "";
-	var $file_size		= "";
-	var $file_ext		= "";
-	var $upload_path	= "";
-	var $overwrite		= FALSE;
-	var $encrypt_name	= FALSE;
-	var $is_image		= FALSE;
-	var $image_width	= '';
-	var $image_height	= '';
-	var $image_type		= '';
-	var $image_size_str	= '';
-	var $error_msg		= array();
-	var $mimes			= array();
-	var $remove_spaces	= TRUE;
-	var $xss_clean		= FALSE;
-	var $temp_prefix	= "temp_file_";
-		
-	/**
-	 * Constructor
-	 *
-	 * @access	public
-	 */
-	function CI_Upload($props = array())
-	{
-		if (count($props) > 0)
-		{
-			$this->initialize($props);
-		}
-		
-		log_message('debug', "Upload Class Initialized");
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Initialize preferences
-	 *
-	 * @access	public
-	 * @param	array
-	 * @return	void
-	 */	
-	function initialize($config = array())
-	{
-		$defaults = array(
-							'max_size'			=> 0,
-							'max_width'			=> 0,
-							'max_height'		=> 0,
-							'allowed_types'		=> "",
-							'file_temp'			=> "",
-							'file_name'			=> "",
-							'orig_name'			=> "",
-							'file_type'			=> "",
-							'file_size'			=> "",
-							'file_ext'			=> "",
-							'upload_path'		=> "",
-							'overwrite'			=> FALSE,
-							'encrypt_name'		=> FALSE,
-							'is_image'			=> FALSE,
-							'image_width'		=> '',
-							'image_height'		=> '',
-							'image_type'		=> '',
-							'image_size_str'	=> '',
-							'error_msg'			=> array(),
-							'mimes'				=> array(),
-							'remove_spaces'		=> TRUE,
-							'xss_clean'			=> FALSE,
-							'temp_prefix'		=> "temp_file_"
-						);	
-	
-	
-		foreach ($defaults as $key => $val)
-		{
-			if (isset($config[$key]))
-			{
-				$method = 'set_'.$key;
-				if (method_exists($this, $method))
-				{
-					$this->$method($config[$key]);
-				}
-				else
-				{
-					$this->$key = $config[$key];
-				}			
-			}
-			else
-			{
-				$this->$key = $val;
-			}
-		}
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Perform the file upload
-	 *
-	 * @access	public
-	 * @return	bool
-	 */	
-	function do_upload($field = 'userfile')
-	{
-		// Is $_FILES[$field] set? If not, no reason to continue.
-		if ( ! isset($_FILES[$field]))
-		{
-			$this->set_error('upload_userfile_not_set');
-			return FALSE;
-		}
-		
-		// Is the upload path valid?
-		if ( ! $this->validate_upload_path())
-		{
-			return FALSE;
-		}
-						
-		// Was the file able to be uploaded? If not, determine the reason why.
-		if ( ! is_uploaded_file($_FILES[$field]['tmp_name']))
-		{
-			$error = ( ! isset($_FILES[$field]['error'])) ? 4 : $_FILES[$field]['error'];
-
-			switch($error)
-			{
-				case 1  :   $this->set_error('upload_file_exceeds_limit');
-					break;
-				case 3  :   $this->set_error('upload_file_partial');
-					break;
-				case 4  :   $this->set_error('upload_no_file_selected');
-					break;
-				default :   $this->set_error('upload_no_file_selected');
-					break;
-			}
-
-			return FALSE;
-		}
-
-		// Set the uploaded data as class variables
-		$this->file_temp = $_FILES[$field]['tmp_name'];		
-		$this->file_name = $_FILES[$field]['name'];
-		$this->file_size = $_FILES[$field]['size'];		
-		$this->file_type = preg_replace("/^(.+?);.*$/", "\\1", $_FILES[$field]['type']);
-		$this->file_type = strtolower($this->file_type);
-		$this->file_ext	 = $this->get_extension($_FILES[$field]['name']);
-		
-		// Convert the file size to kilobytes
-		if ($this->file_size > 0)
-		{
-			$this->file_size = round($this->file_size/1024, 2);
-		}
-
-		// Is the file type allowed to be uploaded?
-		if ( ! $this->is_allowed_filetype())
-		{
-			$this->set_error('upload_invalid_filetype');
-			return FALSE;
-		}
-
-		// Is the file size within the allowed maximum?
-		if ( ! $this->is_allowed_filesize())
-		{
-			$this->set_error('upload_invalid_filesize');
-			return FALSE;
-		}
-
-		// Are the image dimensions within the allowed size?
-		// Note: This can fail if the server has an open_basdir restriction.
-		if ( ! $this->is_allowed_dimensions())
-		{
-			$this->set_error('upload_invalid_dimensions');
-			return FALSE;
-		}
-
-		// Sanitize the file name for security
-		$this->file_name = $this->clean_file_name($this->file_name);
-
-		// Remove white spaces in the name
-		if ($this->remove_spaces == TRUE)
-		{
-			$this->file_name = preg_replace("/\s+/", "_", $this->file_name);
-		}
-
-		/*
-		 * Validate the file name
-		 * This function appends an number onto the end of
-		 * the file if one with the same name already exists.
-		 * If it returns false there was a problem.
-		 */
-		$this->orig_name = $this->file_name;
-
-		if ($this->overwrite == FALSE)
-		{
-			$this->file_name = $this->set_filename($this->upload_path, $this->file_name);
-			
-			if ($this->file_name === FALSE)
-			{
-				return FALSE;
-			}
-		}
-
-		/*
-		 * Move the file to the final destination
-		 * To deal with different server configurations
-		 * we'll attempt to use copy() first.  If that fails
-		 * we'll use move_uploaded_file().  One of the two should
-		 * reliably work in most environments
-		 */
-		if ( ! @copy($this->file_temp, $this->upload_path.$this->file_name))
-		{
-			if ( ! @move_uploaded_file($this->file_temp, $this->upload_path.$this->file_name))
-			{
-				 $this->set_error('upload_destination_error');
-				 return FALSE;
-			}
-		}
-		
-		/*
-		 * Run the file through the XSS hacking filter
-		 * This helps prevent malicious code from being
-		 * embedded within a file.  Scripts can easily
-		 * be disguised as images or other file types.
-		 */
-		if ($this->xss_clean == TRUE)
-		{
-			$this->do_xss_clean();
-		}
-
-		/*
-		 * Set the finalized image dimensions
-		 * This sets the image width/height (assuming the
-		 * file was an image).  We use this information
-		 * in the "data" function.
-		 */
-		$this->set_image_properties($this->upload_path.$this->file_name);
-
-		return TRUE;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Finalized Data Array
-	 *	
-	 * Returns an associative array containing all of the information
-	 * related to the upload, allowing the developer easy access in one array.
-	 *
-	 * @access	public
-	 * @return	array
-	 */	
-	function data()
-	{
-		return array (
-						'file_name'			=> $this->file_name,
-						'file_type'			=> $this->file_type,
-						'file_path'			=> $this->upload_path,
-						'full_path'			=> $this->upload_path.$this->file_name,
-						'raw_name'			=> str_replace($this->file_ext, '', $this->file_name),
-						'orig_name'			=> $this->orig_name,
-						'file_ext'			=> $this->file_ext,
-						'file_size'			=> $this->file_size,
-						'is_image'			=> $this->is_image(),
-						'image_width'		=> $this->image_width,
-						'image_height'		=> $this->image_height,
-						'image_type'		=> $this->image_type,
-						'image_size_str'	=> $this->image_size_str,
-					);
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set Upload Path
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	void
-	 */	
-	function set_upload_path($path)
-	{
-		$this->upload_path = $path;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set the file name
-	 *
-	 * This function takes a filename/path as input and looks for the
-	 * existence of a file with the same name. If found, it will append a
-	 * number to the end of the filename to avoid overwriting a pre-existing file.
-	 *
-	 * @access	public
-	 * @param	string
-	 * @param	string
-	 * @return	string
-	 */	
-	function set_filename($path, $filename)
-	{
-		if ($this->encrypt_name == TRUE)
-		{		
-			mt_srand();
-			$filename = md5(uniqid(mt_rand())).$this->file_ext; 			
-		}
-	
-		if ( ! file_exists($path.$filename))
-		{
-			return $filename;
-		}
-	
-		$filename = str_replace($this->file_ext, '', $filename);
-		
-		$new_filename = '';
-		for ($i = 1; $i < 100; $i++)
-		{			
-			if ( ! file_exists($path.$filename.$i.$this->file_ext))
-			{
-				$new_filename = $filename.$i.$this->file_ext;
-				break;
-			}
-		}
-
-		if ($new_filename == '')
-		{
-			$this->set_error('upload_bad_filename');
-			return FALSE;
-		}
-		else
-		{
-			return $new_filename;
-		}
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set Maximum File Size
-	 *
-	 * @access	public
-	 * @param	integer
-	 * @return	void
-	 */	
-	function set_max_filesize($n)
-	{
-		$this->max_size = ( ! eregi("^[[:digit:]]+$", $n)) ? 0 : $n;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set Maximum Image Width
-	 *
-	 * @access	public
-	 * @param	integer
-	 * @return	void
-	 */	
-	function set_max_width($n)
-	{
-		$this->max_width = ( ! eregi("^[[:digit:]]+$", $n)) ? 0 : $n;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set Maximum Image Height
-	 *
-	 * @access	public
-	 * @param	integer
-	 * @return	void
-	 */	
-	function set_max_height($n)
-	{
-		$this->max_height = ( ! eregi("^[[:digit:]]+$", $n)) ? 0 : $n;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set Allowed File Types
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	void
-	 */	
-	function set_allowed_types($types)
-	{
-		$this->allowed_types = explode('|', $types);
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set Image Properties
-	 *
-	 * Uses GD to determine the width/height/type of image
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	void
-	 */	
-	function set_image_properties($path = '')
-	{
-		if ( ! $this->is_image())
-		{
-			return;
-		}
-
-		if (function_exists('getimagesize'))
-		{
-			if (FALSE !== ($D = @getimagesize($path)))
-			{	
-				$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');
-
-				$this->image_width		= $D['0'];
-				$this->image_height		= $D['1'];
-				$this->image_type		= ( ! isset($types[$D['2']])) ? 'unknown' : $types[$D['2']];
-				$this->image_size_str	= $D['3'];  // string containing height and width
-			}
-		}
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set XSS Clean
-	 *
-	 * Enables the XSS flag so that the file that was uploaded
-	 * will be run through the XSS filter.
-	 *
-	 * @access	public
-	 * @param	bool
-	 * @return	void
-	 */
-	function set_xss_clean($flag = FALSE)
-	{
-		$this->xss_clean = ($flag == TRUE) ? TRUE : FALSE;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Validate the image
-	 *
-	 * @access	public
-	 * @return	bool
-	 */	
-	function is_image()
-	{
-		$img_mimes = array(
-							'image/gif',
-							'image/jpg',
-							'image/jpe',
-							'image/jpeg',
-							'image/pjpeg',
-							'image/png',
-							'image/x-png'
-						   );
-
-
-		return (in_array($this->file_type, $img_mimes, TRUE)) ? TRUE : FALSE;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Verify that the filetype is allowed
-	 *
-	 * @access	public
-	 * @return	bool
-	 */	
-	function is_allowed_filetype()
-	{
-		if (count($this->allowed_types) == 0)
-		{
-			$this->set_error('upload_no_file_types');
-			return FALSE;
-		}
-			 	
-		foreach ($this->allowed_types as $val)
-		{
-			$mime = $this->mimes_types(strtolower($val));
-		
-			if (is_array($mime))
-			{
-				if (in_array($this->file_type, $mime, TRUE))
-				{
-					return TRUE;
-				}
-			}
-			else
-			{
-				if ($mime == $this->file_type)
-				{
-					return TRUE;
-				}	
-			}		
-		}
-		
-		return FALSE;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Verify that the file is within the allowed size
-	 *
-	 * @access	public
-	 * @return	bool
-	 */	
-	function is_allowed_filesize()
-	{
-		if ($this->max_size != 0  AND  $this->file_size > $this->max_size)
-		{
-			return FALSE;
-		}
-		else
-		{
-			return TRUE;
-		}
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Verify that the image is within the allowed width/height
-	 *
-	 * @access	public
-	 * @return	bool
-	 */	
-	function is_allowed_dimensions()
-	{
-		if ( ! $this->is_image())
-		{
-			return TRUE;
-		}
-
-		if (function_exists('getimagesize'))
-		{
-			$D = @getimagesize($this->file_temp);
-
-			if ($this->max_width > 0 AND $D['0'] > $this->max_width)
-			{
-				return FALSE;
-			}
-
-			if ($this->max_height > 0 AND $D['1'] > $this->max_height)
-			{
-				return FALSE;
-			}
-
-			return TRUE;
-		}
-
-		return TRUE;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Validate Upload Path
-	 *
-	 * Verifies that it is a valid upload path with proper permissions.
-	 *
-	 *
-	 * @access	public
-	 * @return	bool
-	 */	
-	function validate_upload_path()
-	{
-		if ($this->upload_path == '')
-		{
-			$this->set_error('upload_no_filepath');
-			return FALSE;
-		}
-		
-		if (function_exists('realpath') AND @realpath($this->upload_path) !== FALSE)
-		{
-			$this->upload_path = str_replace("\\", "/", realpath($this->upload_path));
-		}
-
-		if ( ! @is_dir($this->upload_path))
-		{
-			$this->set_error('upload_no_filepath');
-			return FALSE;
-		}
-
-		if ( ! is_writable($this->upload_path))
-		{
-			$this->set_error('upload_not_writable');
-			return FALSE;
-		}
-
-		$this->upload_path = preg_replace("/(.+?)\/*$/", "\\1/",  $this->upload_path);
-		return TRUE;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Extract the file extension
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */	
-	function get_extension($filename)
-	{
-		$x = explode('.', $filename);
-		return '.'.end($x);
-	}	
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Clean the file name for security
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */		
-	function clean_file_name($filename)
-	{
-		$bad = array(
-						"<!--",
-						"-->",
-						"'",
-						"<",
-						">",
-						'"',
-						'&',
-						'$',
-						'=',
-						';',
-						'?',
-						'/',
-						"%20",
-						"%22",
-						"%3c",		// <
-						"%253c", 	// <
-						"%3e", 		// >
-						"%0e", 		// >
-						"%28", 		// (
-						"%29", 		// )
-						"%2528", 	// (
-						"%26", 		// &
-						"%24", 		// $
-						"%3f", 		// ?
-						"%3b", 		// ;
-						"%3d"		// =
-					);
-					
-		foreach ($bad as $val)
-		{
-			$filename = str_replace($val, '', $filename);
-		}
-
-		return $filename;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Runs the file through the XSS clean function
-	 *
-	 * This prevents people from embedding malicious code in their files.
-	 * I'm not sure that it won't negatively affect certain files in unexpected ways,
-	 * but so far I haven't found that it causes trouble.
-	 *
-	 * @access	public
-	 * @return	void
-	 */	
-	function do_xss_clean()
-	{		
-		$file = $this->upload_path.$this->file_name;
-		
-		if (filesize($file) == 0)
-		{
-			return FALSE;
-		}
-	
-		if ( ! $fp = @fopen($file, 'rb'))
-		{
-			return FALSE;
-		}
-			
-		flock($fp, LOCK_EX);
-
-		$data = fread($fp, filesize($file));
-		
-		$CI =& get_instance();	
-		$data = $CI->input->xss_clean($data);
-
-		fwrite($fp, $data);
-		flock($fp, LOCK_UN);
-		fclose($fp);
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Set an error message
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	void
-	 */	
-	function set_error($msg)
-	{
-		$CI =& get_instance();	
-		$CI->lang->load('upload');
-		
-		if (is_array($msg))
-		{
-			foreach ($msg as $val)
-			{
-				$msg = ($CI->lang->line($val) == FALSE) ? $val : $CI->lang->line($val);				
-				$this->error_msg[] = $msg;
-				log_message('error', $msg);
-			}		
-		}
-		else
-		{
-			$msg = ($CI->lang->line($msg) == FALSE) ? $msg : $CI->lang->line($msg);
-			$this->error_msg[] = $msg;
-			log_message('error', $msg);
-		}
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * Display the error message
-	 *
-	 * @access	public
-	 * @param	string
-	 * @param	string
-	 * @return	string
-	 */	
-	function display_errors($open = '<p>', $close = '</p>')
-	{
-		$str = '';
-		foreach ($this->error_msg as $val)
-		{
-			$str .= $open.$val.$close;
-		}
-	
-		return $str;
-	}
-	
-	// --------------------------------------------------------------------
-	
-	/**
-	 * List of Mime Types
-	 *
-	 * This is a list of mime types.  We use it to validate
-	 * the "allowed types" set by the developer
-	 *
-	 * @access	public
-	 * @param	string
-	 * @return	string
-	 */	
-	function mimes_types($mime)
-	{
-		if (count($this->mimes) == 0)
-		{
-			if (@include(APPPATH.'config/mimes'.EXT))
-			{
-				$this->mimes = $mimes;
-				unset($mimes);
-			}
-		}
-	
-		return ( ! isset($this->mimes[$mime])) ? FALSE : $this->mimes[$mime];
-	}
-
-}
-// END Upload Class
+<?php  if (!defined('BASEPATH')) exit('No direct script access allowed');

+/**

+ * CodeIgniter

+ *

+ * An open source application development framework for PHP 4.3.2 or newer

+ *

+ * @package		CodeIgniter

+ * @author		Rick Ellis

+ * @copyright	Copyright (c) 2006, EllisLab, Inc.

+ * @license		http://www.codeignitor.com/user_guide/license.html

+ * @link		http://www.codeigniter.com

+ * @since		Version 1.0

+ * @filesource

+ */

+

+// ------------------------------------------------------------------------

+

+/**

+ * File Uploading Class

+ *

+ * @package		CodeIgniter

+ * @subpackage	Libraries

+ * @category	Uploads

+ * @author		Rick Ellis

+ * @link		http://www.codeigniter.com/user_guide/libraries/file_uploading.html

+ */

+class CI_Upload {

+	

+	var $max_size		= 0;

+	var $max_width		= 0;

+	var $max_height		= 0;

+	var $allowed_types	= "";

+	var $file_temp		= "";

+	var $file_name		= "";

+	var $orig_name		= "";

+	var $file_type		= "";

+	var $file_size		= "";

+	var $file_ext		= "";

+	var $upload_path	= "";

+	var $overwrite		= FALSE;

+	var $encrypt_name	= FALSE;

+	var $is_image		= FALSE;

+	var $image_width	= '';

+	var $image_height	= '';

+	var $image_type		= '';

+	var $image_size_str	= '';

+	var $error_msg		= array();

+	var $mimes			= array();

+	var $remove_spaces	= TRUE;

+	var $xss_clean		= FALSE;

+	var $temp_prefix	= "temp_file_";

+		

+	/**

+	 * Constructor

+	 *

+	 * @access	public

+	 */

+	function CI_Upload($props = array())

+	{

+		if (count($props) > 0)

+		{

+			$this->initialize($props);

+		}

+		

+		log_message('debug', "Upload Class Initialized");

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Initialize preferences

+	 *

+	 * @access	public

+	 * @param	array

+	 * @return	void

+	 */	

+	function initialize($config = array())

+	{

+		$defaults = array(

+							'max_size'			=> 0,

+							'max_width'			=> 0,

+							'max_height'		=> 0,

+							'allowed_types'		=> "",

+							'file_temp'			=> "",

+							'file_name'			=> "",

+							'orig_name'			=> "",

+							'file_type'			=> "",

+							'file_size'			=> "",

+							'file_ext'			=> "",

+							'upload_path'		=> "",

+							'overwrite'			=> FALSE,

+							'encrypt_name'		=> FALSE,

+							'is_image'			=> FALSE,

+							'image_width'		=> '',

+							'image_height'		=> '',

+							'image_type'		=> '',

+							'image_size_str'	=> '',

+							'error_msg'			=> array(),

+							'mimes'				=> array(),

+							'remove_spaces'		=> TRUE,

+							'xss_clean'			=> FALSE,

+							'temp_prefix'		=> "temp_file_"

+						);	

+	

+	

+		foreach ($defaults as $key => $val)

+		{

+			if (isset($config[$key]))

+			{

+				$method = 'set_'.$key;

+				if (method_exists($this, $method))

+				{

+					$this->$method($config[$key]);

+				}

+				else

+				{

+					$this->$key = $config[$key];

+				}			

+			}

+			else

+			{

+				$this->$key = $val;

+			}

+		}

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Perform the file upload

+	 *

+	 * @access	public

+	 * @return	bool

+	 */	

+	function do_upload($field = 'userfile')

+	{

+		// Is $_FILES[$field] set? If not, no reason to continue.

+		if ( ! isset($_FILES[$field]))

+		{

+			$this->set_error('upload_userfile_not_set');

+			return FALSE;

+		}

+		

+		// Is the upload path valid?

+		if ( ! $this->validate_upload_path())

+		{

+			return FALSE;

+		}

+						

+		// Was the file able to be uploaded? If not, determine the reason why.

+		if ( ! is_uploaded_file($_FILES[$field]['tmp_name']))

+		{

+			$error = ( ! isset($_FILES[$field]['error'])) ? 4 : $_FILES[$field]['error'];

+

+			switch($error)

+			{

+				case 1  :   $this->set_error('upload_file_exceeds_limit');

+					break;

+				case 3  :   $this->set_error('upload_file_partial');

+					break;

+				case 4  :   $this->set_error('upload_no_file_selected');

+					break;

+				default :   $this->set_error('upload_no_file_selected');

+					break;

+			}

+

+			return FALSE;

+		}

+

+		// Set the uploaded data as class variables

+		$this->file_temp = $_FILES[$field]['tmp_name'];		

+		$this->file_name = $_FILES[$field]['name'];

+		$this->file_size = $_FILES[$field]['size'];		

+		$this->file_type = preg_replace("/^(.+?);.*$/", "\\1", $_FILES[$field]['type']);

+		$this->file_type = strtolower($this->file_type);

+		$this->file_ext	 = $this->get_extension($_FILES[$field]['name']);

+		

+		// Convert the file size to kilobytes

+		if ($this->file_size > 0)

+		{

+			$this->file_size = round($this->file_size/1024, 2);

+		}

+

+		// Is the file type allowed to be uploaded?

+		if ( ! $this->is_allowed_filetype())

+		{

+			$this->set_error('upload_invalid_filetype');

+			return FALSE;

+		}

+

+		// Is the file size within the allowed maximum?

+		if ( ! $this->is_allowed_filesize())

+		{

+			$this->set_error('upload_invalid_filesize');

+			return FALSE;

+		}

+

+		// Are the image dimensions within the allowed size?

+		// Note: This can fail if the server has an open_basdir restriction.

+		if ( ! $this->is_allowed_dimensions())

+		{

+			$this->set_error('upload_invalid_dimensions');

+			return FALSE;

+		}

+

+		// Sanitize the file name for security

+		$this->file_name = $this->clean_file_name($this->file_name);

+

+		// Remove white spaces in the name

+		if ($this->remove_spaces == TRUE)

+		{

+			$this->file_name = preg_replace("/\s+/", "_", $this->file_name);

+		}

+

+		/*

+		 * Validate the file name

+		 * This function appends an number onto the end of

+		 * the file if one with the same name already exists.

+		 * If it returns false there was a problem.

+		 */

+		$this->orig_name = $this->file_name;

+

+		if ($this->overwrite == FALSE)

+		{

+			$this->file_name = $this->set_filename($this->upload_path, $this->file_name);

+			

+			if ($this->file_name === FALSE)

+			{

+				return FALSE;

+			}

+		}

+

+		/*

+		 * Move the file to the final destination

+		 * To deal with different server configurations

+		 * we'll attempt to use copy() first.  If that fails

+		 * we'll use move_uploaded_file().  One of the two should

+		 * reliably work in most environments

+		 */

+		if ( ! @copy($this->file_temp, $this->upload_path.$this->file_name))

+		{

+			if ( ! @move_uploaded_file($this->file_temp, $this->upload_path.$this->file_name))

+			{

+				 $this->set_error('upload_destination_error');

+				 return FALSE;

+			}

+		}

+		

+		/*

+		 * Run the file through the XSS hacking filter

+		 * This helps prevent malicious code from being

+		 * embedded within a file.  Scripts can easily

+		 * be disguised as images or other file types.

+		 */

+		if ($this->xss_clean == TRUE)

+		{

+			$this->do_xss_clean();

+		}

+

+		/*

+		 * Set the finalized image dimensions

+		 * This sets the image width/height (assuming the

+		 * file was an image).  We use this information

+		 * in the "data" function.

+		 */

+		$this->set_image_properties($this->upload_path.$this->file_name);

+

+		return TRUE;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Finalized Data Array

+	 *	

+	 * Returns an associative array containing all of the information

+	 * related to the upload, allowing the developer easy access in one array.

+	 *

+	 * @access	public

+	 * @return	array

+	 */	

+	function data()

+	{

+		return array (

+						'file_name'			=> $this->file_name,

+						'file_type'			=> $this->file_type,

+						'file_path'			=> $this->upload_path,

+						'full_path'			=> $this->upload_path.$this->file_name,

+						'raw_name'			=> str_replace($this->file_ext, '', $this->file_name),

+						'orig_name'			=> $this->orig_name,

+						'file_ext'			=> $this->file_ext,

+						'file_size'			=> $this->file_size,

+						'is_image'			=> $this->is_image(),

+						'image_width'		=> $this->image_width,

+						'image_height'		=> $this->image_height,

+						'image_type'		=> $this->image_type,

+						'image_size_str'	=> $this->image_size_str,

+					);

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set Upload Path

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	void

+	 */	

+	function set_upload_path($path)

+	{

+		$this->upload_path = $path;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set the file name

+	 *

+	 * This function takes a filename/path as input and looks for the

+	 * existence of a file with the same name. If found, it will append a

+	 * number to the end of the filename to avoid overwriting a pre-existing file.

+	 *

+	 * @access	public

+	 * @param	string

+	 * @param	string

+	 * @return	string

+	 */	

+	function set_filename($path, $filename)

+	{

+		if ($this->encrypt_name == TRUE)

+		{		

+			mt_srand();

+			$filename = md5(uniqid(mt_rand())).$this->file_ext; 			

+		}

+	

+		if ( ! file_exists($path.$filename))

+		{

+			return $filename;

+		}

+	

+		$filename = str_replace($this->file_ext, '', $filename);

+		

+		$new_filename = '';

+		for ($i = 1; $i < 100; $i++)

+		{			

+			if ( ! file_exists($path.$filename.$i.$this->file_ext))

+			{

+				$new_filename = $filename.$i.$this->file_ext;

+				break;

+			}

+		}

+

+		if ($new_filename == '')

+		{

+			$this->set_error('upload_bad_filename');

+			return FALSE;

+		}

+		else

+		{

+			return $new_filename;

+		}

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set Maximum File Size

+	 *

+	 * @access	public

+	 * @param	integer

+	 * @return	void

+	 */	

+	function set_max_filesize($n)

+	{

+		$this->max_size = ( ! eregi("^[[:digit:]]+$", $n)) ? 0 : $n;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set Maximum Image Width

+	 *

+	 * @access	public

+	 * @param	integer

+	 * @return	void

+	 */	

+	function set_max_width($n)

+	{

+		$this->max_width = ( ! eregi("^[[:digit:]]+$", $n)) ? 0 : $n;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set Maximum Image Height

+	 *

+	 * @access	public

+	 * @param	integer

+	 * @return	void

+	 */	

+	function set_max_height($n)

+	{

+		$this->max_height = ( ! eregi("^[[:digit:]]+$", $n)) ? 0 : $n;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set Allowed File Types

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	void

+	 */	

+	function set_allowed_types($types)

+	{

+		$this->allowed_types = explode('|', $types);

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set Image Properties

+	 *

+	 * Uses GD to determine the width/height/type of image

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	void

+	 */	

+	function set_image_properties($path = '')

+	{

+		if ( ! $this->is_image())

+		{

+			return;

+		}

+

+		if (function_exists('getimagesize'))

+		{

+			if (FALSE !== ($D = @getimagesize($path)))

+			{	

+				$types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png');

+

+				$this->image_width		= $D['0'];

+				$this->image_height		= $D['1'];

+				$this->image_type		= ( ! isset($types[$D['2']])) ? 'unknown' : $types[$D['2']];

+				$this->image_size_str	= $D['3'];  // string containing height and width

+			}

+		}

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set XSS Clean

+	 *

+	 * Enables the XSS flag so that the file that was uploaded

+	 * will be run through the XSS filter.

+	 *

+	 * @access	public

+	 * @param	bool

+	 * @return	void

+	 */

+	function set_xss_clean($flag = FALSE)

+	{

+		$this->xss_clean = ($flag == TRUE) ? TRUE : FALSE;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Validate the image

+	 *

+	 * @access	public

+	 * @return	bool

+	 */	

+	function is_image()

+	{

+		$img_mimes = array(

+							'image/gif',

+							'image/jpg',

+							'image/jpe',

+							'image/jpeg',

+							'image/pjpeg',

+							'image/png',

+							'image/x-png'

+						   );

+

+

+		return (in_array($this->file_type, $img_mimes, TRUE)) ? TRUE : FALSE;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Verify that the filetype is allowed

+	 *

+	 * @access	public

+	 * @return	bool

+	 */	

+	function is_allowed_filetype()

+	{

+		if (count($this->allowed_types) == 0)

+		{

+			$this->set_error('upload_no_file_types');

+			return FALSE;

+		}

+			 	

+		foreach ($this->allowed_types as $val)

+		{

+			$mime = $this->mimes_types(strtolower($val));

+		

+			if (is_array($mime))

+			{

+				if (in_array($this->file_type, $mime, TRUE))

+				{

+					return TRUE;

+				}

+			}

+			else

+			{

+				if ($mime == $this->file_type)

+				{

+					return TRUE;

+				}	

+			}		

+		}

+		

+		return FALSE;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Verify that the file is within the allowed size

+	 *

+	 * @access	public

+	 * @return	bool

+	 */	

+	function is_allowed_filesize()

+	{

+		if ($this->max_size != 0  AND  $this->file_size > $this->max_size)

+		{

+			return FALSE;

+		}

+		else

+		{

+			return TRUE;

+		}

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Verify that the image is within the allowed width/height

+	 *

+	 * @access	public

+	 * @return	bool

+	 */	

+	function is_allowed_dimensions()

+	{

+		if ( ! $this->is_image())

+		{

+			return TRUE;

+		}

+

+		if (function_exists('getimagesize'))

+		{

+			$D = @getimagesize($this->file_temp);

+

+			if ($this->max_width > 0 AND $D['0'] > $this->max_width)

+			{

+				return FALSE;

+			}

+

+			if ($this->max_height > 0 AND $D['1'] > $this->max_height)

+			{

+				return FALSE;

+			}

+

+			return TRUE;

+		}

+

+		return TRUE;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Validate Upload Path

+	 *

+	 * Verifies that it is a valid upload path with proper permissions.

+	 *

+	 *

+	 * @access	public

+	 * @return	bool

+	 */	

+	function validate_upload_path()

+	{

+		if ($this->upload_path == '')

+		{

+			$this->set_error('upload_no_filepath');

+			return FALSE;

+		}

+		

+		if (function_exists('realpath') AND @realpath($this->upload_path) !== FALSE)

+		{

+			$this->upload_path = str_replace("\\", "/", realpath($this->upload_path));

+		}

+

+		if ( ! @is_dir($this->upload_path))

+		{

+			$this->set_error('upload_no_filepath');

+			return FALSE;

+		}

+

+		if ( ! is_writable($this->upload_path))

+		{

+			$this->set_error('upload_not_writable');

+			return FALSE;

+		}

+

+		$this->upload_path = preg_replace("/(.+?)\/*$/", "\\1/",  $this->upload_path);

+		return TRUE;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Extract the file extension

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	string

+	 */	

+	function get_extension($filename)

+	{

+		$x = explode('.', $filename);

+		return '.'.end($x);

+	}	

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Clean the file name for security

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	string

+	 */		

+	function clean_file_name($filename)

+	{

+		$bad = array(

+						"<!--",

+						"-->",

+						"'",

+						"<",

+						">",

+						'"',

+						'&',

+						'$',

+						'=',

+						';',

+						'?',

+						'/',

+						"%20",

+						"%22",

+						"%3c",		// <

+						"%253c", 	// <

+						"%3e", 		// >

+						"%0e", 		// >

+						"%28", 		// (

+						"%29", 		// )

+						"%2528", 	// (

+						"%26", 		// &

+						"%24", 		// $

+						"%3f", 		// ?

+						"%3b", 		// ;

+						"%3d"		// =

+					);

+					

+		foreach ($bad as $val)

+		{

+			$filename = str_replace($val, '', $filename);

+		}

+

+		return $filename;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Runs the file through the XSS clean function

+	 *

+	 * This prevents people from embedding malicious code in their files.

+	 * I'm not sure that it won't negatively affect certain files in unexpected ways,

+	 * but so far I haven't found that it causes trouble.

+	 *

+	 * @access	public

+	 * @return	void

+	 */	

+	function do_xss_clean()

+	{		

+		$file = $this->upload_path.$this->file_name;

+		

+		if (filesize($file) == 0)

+		{

+			return FALSE;

+		}

+	

+		if ( ! $fp = @fopen($file, 'rb'))

+		{

+			return FALSE;

+		}

+			

+		flock($fp, LOCK_EX);

+

+		$data = fread($fp, filesize($file));

+		

+		$CI =& get_instance();	

+		$data = $CI->input->xss_clean($data);

+

+		fwrite($fp, $data);

+		flock($fp, LOCK_UN);

+		fclose($fp);

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Set an error message

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	void

+	 */	

+	function set_error($msg)

+	{

+		$CI =& get_instance();	

+		$CI->lang->load('upload');

+		

+		if (is_array($msg))

+		{

+			foreach ($msg as $val)

+			{

+				$msg = ($CI->lang->line($val) == FALSE) ? $val : $CI->lang->line($val);				

+				$this->error_msg[] = $msg;

+				log_message('error', $msg);

+			}		

+		}

+		else

+		{

+			$msg = ($CI->lang->line($msg) == FALSE) ? $msg : $CI->lang->line($msg);

+			$this->error_msg[] = $msg;

+			log_message('error', $msg);

+		}

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * Display the error message

+	 *

+	 * @access	public

+	 * @param	string

+	 * @param	string

+	 * @return	string

+	 */	

+	function display_errors($open = '<p>', $close = '</p>')

+	{

+		$str = '';

+		foreach ($this->error_msg as $val)

+		{

+			$str .= $open.$val.$close;

+		}

+	

+		return $str;

+	}

+	

+	// --------------------------------------------------------------------

+	

+	/**

+	 * List of Mime Types

+	 *

+	 * This is a list of mime types.  We use it to validate

+	 * the "allowed types" set by the developer

+	 *

+	 * @access	public

+	 * @param	string

+	 * @return	string

+	 */	

+	function mimes_types($mime)

+	{

+		if (count($this->mimes) == 0)

+		{

+			if (@include(APPPATH.'config/mimes'.EXT))

+			{

+				$this->mimes = $mimes;

+				unset($mimes);

+			}

+		}

+	

+		return ( ! isset($this->mimes[$mime])) ? FALSE : $this->mimes[$mime];

+	}

+

+}

+// END Upload Class

 ?>
\ No newline at end of file