Initial Import
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
new file mode 100644
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--- /dev/null
+++ b/system/libraries/Upload.php
@@ -0,0 +1,775 @@
+<?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 $file_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($config = array())
+ {
+ foreach ($config as $key => $val)
+ {
+ $method = 'set_'.$key;
+ if (method_exists($this, $method))
+ {
+ $this->$method($val);
+ }
+ else
+ {
+ $this->$key = $val;
+ }
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Perform the file upload
+ *
+ * @access public
+ * @return bool
+ */
+ function do_upload()
+ {
+ // Is $_FILES['userfile'] set? If not, no reason to continue.
+ if ( ! isset($_FILES['userfile']))
+ {
+ $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['userfile']['tmp_name']))
+ {
+ $error = ( ! isset($_FILES['userfile']['error'])) ? 4 : $_FILES['userfile']['error'];
+
+ switch($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['userfile']['tmp_name'];
+ $this->file_name = $_FILES['userfile']['name'];
+ $this->file_size = $_FILES['userfile']['size'];
+ $this->file_type = preg_replace("/^(.+?);.*$/", "\\1", $_FILES['userfile']['type']);
+ $this->file_type = strtolower($this->file_type);
+ $this->file_ext = $this->get_extension($_FILES['userfile']['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->file_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, $this->file_path.$this->file_name))
+ {
+ if ( ! @move_uploaded_file($this->file_temp, $this->file_path.$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->file_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->file_path,
+ 'full_path' => $this->file_path.$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->file_path = $path;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set the file name
+ *
+ * This function takes a filename/path as input and looks for the
+ * existnace of a file with the same name. If found, it will append a
+ * number to the end of the filename to avoid overwritting a pre-existing file.
+ *
+ * @access public
+ * @param string
+ * @param string
+ * @return string
+ */
+ function set_filename($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, $img_mimes)) ? TRUE : FALSE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Verify that the filetype is allowed
+ *
+ * @access public
+ * @return bool
+ */
+ function is_allowed_filetype()
+ {
+ if (count($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, $mime))
+ {
+ return TRUE;
+ }
+ }
+ else
+ {
+ if ($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->file_path == '')
+ {
+ $this->set_error('upload_no_filepath');
+ return FALSE;
+ }
+
+ if (function_exists('realpath') AND @realpath($this->file_path) !== FALSE)
+ {
+ $this->file_path = str_replace("\\", "/", realpath($this->file_path));
+ }
+
+ if ( ! @is_dir($this->file_path))
+ {
+ $this->set_error('upload_no_filepath');
+ return FALSE;
+ }
+
+ if ( ! is_writable($this->file_path))
+ {
+ $this->set_error('upload_not_writable');
+ return FALSE;
+ }
+
+ $this->file_path = preg_replace("/(.+?)\/*$/", "\\1/", $this->file_path);
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Extract the file extension
+ *
+ * @access public
+ * @param string
+ * @return string
+ */
+ function get_extension($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 = $this->file_path.$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));
+
+ $obj =& get_instance();
+ $data = $obj->input->xss_clean($data);
+
+ fwrite($fp, $data);
+ flock($fp, LOCK_UN);
+ fclose($fp);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set an error message
+ *
+ * @access public
+ * @param string
+ * @return void
+ */
+ function set_error($msg)
+ {
+ $obj =& get_instance();
+ $obj->lang->load('upload');
+
+ if (is_array($msg))
+ {
+ foreach ($msg as $val)
+ {
+ $msg = ($obj->lang->line($val) == FALSE) ? $val : $obj->lang->line($val);
+ $this->error_msg[] = $msg;
+ log_message('error', $msg);
+ }
+ }
+ else
+ {
+ $msg = ($obj->lang->line($msg) == FALSE) ? $msg : $obj->lang->line($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
+?>
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