--- /dev/null
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 5.1.6 or newer
+ *
+ * @package CodeIgniter
+ * @author ExpressionEngine Dev Team
+ * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
+ * @license http://codeigniter.com/user_guide/license.html
+ * @link http://codeigniter.com
+ * @since Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * File Uploading Class
+ *
+ * @package CodeIgniter
+ * @subpackage Libraries
+ * @category Uploads
+ * @author ExpressionEngine Dev Team
+ * @link http://codeigniter.com/user_guide/libraries/file_uploading.html
+ */
+class CI_Upload {
+
+ public $max_size = 0;
+ public $max_width = 0;
+ public $max_height = 0;
+ public $max_filename = 0;
+ public $allowed_types = "";
+ public $file_temp = "";
+ public $file_name = "";
+ public $orig_name = "";
+ public $file_type = "";
+ public $file_size = "";
+ public $file_ext = "";
+ public $upload_path = "";
+ public $overwrite = FALSE;
+ public $encrypt_name = FALSE;
+ public $is_image = FALSE;
+ public $image_width = '';
+ public $image_height = '';
+ public $image_type = '';
+ public $image_size_str = '';
+ public $error_msg = array();
+ public $mimes = array();
+ public $remove_spaces = TRUE;
+ public $xss_clean = FALSE;
+ public $temp_prefix = "temp_file_";
+ public $client_name = '';
+
+ protected $_file_name_override = '';
+
+ /**
+ * Constructor
+ *
+ * @access public
+ */
+ public function __construct($props = array())
+ {
+ if (count($props) > 0)
+ {
+ $this->initialize($props);
+ }
+
+ log_message('debug', "Upload Class Initialized");
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Initialize preferences
+ *
+ * @param array
+ * @return void
+ */
+ public function initialize($config = array())
+ {
+ $defaults = array(
+ 'max_size' => 0,
+ 'max_width' => 0,
+ 'max_height' => 0,
+ 'max_filename' => 0,
+ 'allowed_types' => "",
+ 'file_temp' => "",
+ 'file_name' => "",
+ 'orig_name' => "",
+ 'file_type' => "",
+ 'file_size' => "",
+ 'file_ext' => "",
+ 'upload_path' => "",
+ 'overwrite' => FALSE,
+ 'encrypt_name' => FALSE,
+ 'is_image' => FALSE,
+ 'image_width' => '',
+ 'image_height' => '',
+ 'image_type' => '',
+ 'image_size_str' => '',
+ 'error_msg' => array(),
+ 'mimes' => array(),
+ 'remove_spaces' => TRUE,
+ 'xss_clean' => FALSE,
+ 'temp_prefix' => "temp_file_",
+ 'client_name' => ''
+ );
+
+
+ foreach ($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;
+ }
+ }
+
+ // if a file_name was provided in the config, use it instead of the user input
+ // supplied file name for all uploads until initialized again
+ $this->_file_name_override = $this->file_name;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Perform the file upload
+ *
+ * @return bool
+ */
+ public function do_upload($field = 'userfile')
+ {
+
+ // Is $_FILES[$field] set? If not, no reason to continue.
+ if ( ! isset($_FILES[$field]))
+ {
+ $this->set_error('upload_no_file_selected');
+ return FALSE;
+ }
+
+ // Is the upload path valid?
+ if ( ! $this->validate_upload_path())
+ {
+ // errors will already be set by validate_upload_path() so just return FALSE
+ return FALSE;
+ }
+
+ // Was the file able to be uploaded? If not, determine the reason why.
+ if ( ! is_uploaded_file($_FILES[$field]['tmp_name']))
+ {
+ $error = ( ! isset($_FILES[$field]['error'])) ? 4 : $_FILES[$field]['error'];
+
+ switch($error)
+ {
+ case 1: // UPLOAD_ERR_INI_SIZE
+ $this->set_error('upload_file_exceeds_limit');
+ break;
+ case 2: // UPLOAD_ERR_FORM_SIZE
+ $this->set_error('upload_file_exceeds_form_limit');
+ break;
+ case 3: // UPLOAD_ERR_PARTIAL
+ $this->set_error('upload_file_partial');
+ break;
+ case 4: // UPLOAD_ERR_NO_FILE
+ $this->set_error('upload_no_file_selected');
+ break;
+ case 6: // UPLOAD_ERR_NO_TMP_DIR
+ $this->set_error('upload_no_temp_directory');
+ break;
+ case 7: // UPLOAD_ERR_CANT_WRITE
+ $this->set_error('upload_unable_to_write_file');
+ break;
+ case 8: // UPLOAD_ERR_EXTENSION
+ $this->set_error('upload_stopped_by_extension');
+ 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_size = $_FILES[$field]['size'];
+ $this->file_type = preg_replace("/^(.+?);.*$/", "\\1", $_FILES[$field]['type']);
+ $this->file_type = strtolower(trim(stripslashes($this->file_type), '"'));
+ $this->file_name = $this->_prep_filename($_FILES[$field]['name']);
+ $this->file_ext = $this->get_extension($this->file_name);
+ $this->client_name = $this->file_name;
+
+ // Is the file type allowed to be uploaded?
+ if ( ! $this->is_allowed_filetype())
+ {
+ $this->set_error('upload_invalid_filetype');
+ return FALSE;
+ }
+
+ // if we're overriding, let's now make sure the new name and type is allowed
+ if ($this->_file_name_override != '')
+ {
+ $this->file_name = $this->_prep_filename($this->_file_name_override);
+
+ // If no extension was provided in the file_name config item, use the uploaded one
+ if (strpos($this->_file_name_override, '.') === FALSE)
+ {
+ $this->file_name .= $this->file_ext;
+ }
+
+ // An extension was provided, lets have it!
+ else
+ {
+ $this->file_ext = $this->get_extension($this->_file_name_override);
+ }
+
+ if ( ! $this->is_allowed_filetype(TRUE))
+ {
+ $this->set_error('upload_invalid_filetype');
+ return FALSE;
+ }
+ }
+
+ // Convert the file size to kilobytes
+ if ($this->file_size > 0)
+ {
+ $this->file_size = round($this->file_size/1024, 2);
+ }
+
+ // 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);
+
+ // Truncate the file name if it's too long
+ if ($this->max_filename > 0)
+ {
+ $this->file_name = $this->limit_filename_length($this->file_name, $this->max_filename);
+ }
+
+ // Remove white spaces in the name
+ if ($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;
+ }
+ }
+
+ /*
+ * 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 ($this->xss_clean)
+ {
+ if ($this->do_xss_clean() === FALSE)
+ {
+ $this->set_error('upload_unable_to_write_file');
+ return FALSE;
+ }
+ }
+
+ /*
+ * Move the file to the final destination
+ * To deal with different server configurations
+ * we'll attempt to use copy() first. If that fails
+ * we'll use move_uploaded_file(). One of the two should
+ * reliably work in most environments
+ */
+ if ( ! @copy($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;
+ }
+ }
+
+ /*
+ * 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.
+ *
+ * @return array
+ */
+ public 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,
+ 'client_name' => $this->client_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' => $this->image_size_str,
+ );
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Upload Path
+ *
+ * @param string
+ * @return void
+ */
+ public function set_upload_path($path)
+ {
+ // Make sure it has a trailing slash
+ $this->upload_path = rtrim($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.
+ *
+ * @param string
+ * @param string
+ * @return string
+ */
+ public 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 $new_filename;
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Maximum File Size
+ *
+ * @param integer
+ * @return void
+ */
+ public function set_max_filesize($n)
+ {
+ $this->max_size = ((int) $n < 0) ? 0: (int) $n;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Maximum File Name Length
+ *
+ * @param integer
+ * @return void
+ */
+ public function set_max_filename($n)
+ {
+ $this->max_filename = ((int) $n < 0) ? 0: (int) $n;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Maximum Image Width
+ *
+ * @param integer
+ * @return void
+ */
+ public function set_max_width($n)
+ {
+ $this->max_width = ((int) $n < 0) ? 0: (int) $n;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Maximum Image Height
+ *
+ * @param integer
+ * @return void
+ */
+ public function set_max_height($n)
+ {
+ $this->max_height = ((int) $n < 0) ? 0: (int) $n;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Allowed File Types
+ *
+ * @param string
+ * @return void
+ */
+ public function set_allowed_types($types)
+ {
+ if ( ! is_array($types) && $types == '*')
+ {
+ $this->allowed_types = '*';
+ return;
+ }
+ $this->allowed_types = explode('|', $types);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set Image Properties
+ *
+ * Uses GD to determine the width/height/type of image
+ *
+ * @param string
+ * @return void
+ */
+ public function set_image_properties($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 = $D['3']; // string containing height and width
+ }
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set XSS Clean
+ *
+ * Enables the XSS flag so that the file that was uploaded
+ * will be run through the XSS filter.
+ *
+ * @param bool
+ * @return void
+ */
+ public function set_xss_clean($flag = FALSE)
+ {
+ $this->xss_clean = ($flag == TRUE) ? TRUE : FALSE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Validate the image
+ *
+ * @return bool
+ */
+ public function is_image()
+ {
+ // IE will sometimes return odd mime-types during upload, so here we just standardize all
+ // jpegs or pngs to the same file type.
+
+ $png_mimes = array('image/x-png');
+ $jpeg_mimes = array('image/jpg', 'image/jpe', 'image/jpeg', 'image/pjpeg');
+
+ if (in_array($this->file_type, $png_mimes))
+ {
+ $this->file_type = 'image/png';
+ }
+
+ if (in_array($this->file_type, $jpeg_mimes))
+ {
+ $this->file_type = 'image/jpeg';
+ }
+
+ $img_mimes = array(
+ 'image/gif',
+ 'image/jpeg',
+ 'image/png',
+ );
+
+ return (in_array($this->file_type, $img_mimes, TRUE)) ? TRUE : FALSE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Verify that the filetype is allowed
+ *
+ * @return bool
+ */
+ public function is_allowed_filetype($ignore_mime = FALSE)
+ {
+ if ($this->allowed_types == '*')
+ {
+ return TRUE;
+ }
+
+ if (count($this->allowed_types) == 0 OR ! is_array($this->allowed_types))
+ {
+ $this->set_error('upload_no_file_types');
+ return FALSE;
+ }
+
+ $ext = strtolower(ltrim($this->file_ext, '.'));
+
+ if ( ! in_array($ext, $this->allowed_types))
+ {
+ return FALSE;
+ }
+
+ // Images get some additional checks
+ $image_types = array('gif', 'jpg', 'jpeg', 'png', 'jpe');
+
+ if (in_array($ext, $image_types))
+ {
+ if (getimagesize($this->file_temp) === FALSE)
+ {
+ return FALSE;
+ }
+ }
+
+ if ($ignore_mime === TRUE)
+ {
+ return TRUE;
+ }
+
+ $mime = $this->mimes_types($ext);
+
+ if (is_array($mime))
+ {
+ if (in_array($this->file_type, $mime, TRUE))
+ {
+ return TRUE;
+ }
+ }
+ elseif ($mime == $this->file_type)
+ {
+ return TRUE;
+ }
+
+ return FALSE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Verify that the file is within the allowed size
+ *
+ * @return bool
+ */
+ public function is_allowed_filesize()
+ {
+ if ($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
+ *
+ * @return bool
+ */
+ public 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'] > $this->max_height)
+ {
+ return FALSE;
+ }
+
+ return TRUE;
+ }
+
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Validate Upload Path
+ *
+ * Verifies that it is a valid upload path with proper permissions.
+ *
+ *
+ * @return bool
+ */
+ public function validate_upload_path()
+ {
+ if ($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))
+ {
+ $this->set_error('upload_no_filepath');
+ return FALSE;
+ }
+
+ if ( ! is_really_writable($this->upload_path))
+ {
+ $this->set_error('upload_not_writable');
+ return FALSE;
+ }
+
+ $this->upload_path = preg_replace("/(.+?)\/*$/", "\\1/", $this->upload_path);
+ return TRUE;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Extract the file extension
+ *
+ * @param string
+ * @return string
+ */
+ public function get_extension($filename)
+ {
+ $x = explode('.', $filename);
+ return '.'.end($x);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Clean the file name for security
+ *
+ * @param string
+ * @return string
+ */
+ public function clean_file_name($filename)
+ {
+ $bad = array(
+ "<!--",
+ "-->",
+ "'",
+ "<",
+ ">",
+ '"',
+ '&',
+ '$',
+ '=',
+ ';',
+ '?',
+ '/',
+ "%20",
+ "%22",
+ "%3c", // <
+ "%253c", // <
+ "%3e", // >
+ "%0e", // >
+ "%28", // (
+ "%29", // )
+ "%2528", // (
+ "%26", // &
+ "%24", // $
+ "%3f", // ?
+ "%3b", // ;
+ "%3d" // =
+ );
+
+ $filename = str_replace($bad, '', $filename);
+
+ return stripslashes($filename);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Limit the File Name Length
+ *
+ * @param string
+ * @return string
+ */
+ public function limit_filename_length($filename, $length)
+ {
+ if (strlen($filename) < $length)
+ {
+ return $filename;
+ }
+
+ $ext = '';
+ if (strpos($filename, '.') !== FALSE)
+ {
+ $parts = explode('.', $filename);
+ $ext = '.'.array_pop($parts);
+ $filename = implode('.', $parts);
+ }
+
+ return substr($filename, 0, ($length - strlen($ext))).$ext;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * 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.
+ *
+ * @return void
+ */
+ public function do_xss_clean()
+ {
+ $file = $this->file_temp;
+
+ if (filesize($file) == 0)
+ {
+ return FALSE;
+ }
+
+ if (function_exists('memory_get_usage') && memory_get_usage() && ini_get('memory_limit') != '')
+ {
+ $current = ini_get('memory_limit') * 1024 * 1024;
+
+ // There was a bug/behavioural change in PHP 5.2, where numbers over one million get output
+ // into scientific notation. number_format() ensures this number is an integer
+ // http://bugs.php.net/bug.php?id=43053
+
+ $new_memory = number_format(ceil(filesize($file) + $current), 0, '.', '');
+
+ ini_set('memory_limit', $new_memory); // When an integer is used, the value is measured in bytes. - PHP.net
+ }
+
+ // If the file being uploaded is an image, then we should have no problem with XSS attacks (in theory), but
+ // IE can be fooled into mime-type detecting a malformed image as an html file, thus executing an XSS attack on anyone
+ // using IE who looks at the image. It does this by inspecting the first 255 bytes of an image. To get around this
+ // CI will itself look at the first 255 bytes of an image to determine its relative safety. This can save a lot of
+ // processor power and time if it is actually a clean image, as it will be in nearly all instances _except_ an
+ // attempted XSS attack.
+
+ if (function_exists('getimagesize') && @getimagesize($file) !== FALSE)
+ {
+ if (($file = @fopen($file, 'rb')) === FALSE) // "b" to force binary
+ {
+ return FALSE; // Couldn't open the file, return FALSE
+ }
+
+ $opening_bytes = fread($file, 256);
+ fclose($file);
+
+ // These are known to throw IE into mime-type detection chaos
+ // <a, <body, <head, <html, <img, <plaintext, <pre, <script, <table, <title
+ // title is basically just in SVG, but we filter it anyhow
+
+ if ( ! preg_match('/<(a|body|head|html|img|plaintext|pre|script|table|title)[\s>]/i', $opening_bytes))
+ {
+ return TRUE; // its an image, no "triggers" detected in the first 256 bytes, we're good
+ }
+ }
+
+ if (($data = @file_get_contents($file)) === FALSE)
+ {
+ return FALSE;
+ }
+
+ $CI =& get_instance();
+ return $CI->security->xss_clean($data, TRUE);
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Set an error message
+ *
+ * @param string
+ * @return void
+ */
+ public 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', $msg);
+ }
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Display the error message
+ *
+ * @param string
+ * @param string
+ * @return string
+ */
+ public function display_errors($open = '<p>', $close = '</p>')
+ {
+ $str = '';
+ foreach ($this->error_msg as $val)
+ {
+ $str .= $open.$val.$close;
+ }
+
+ return $str;
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * List of Mime Types
+ *
+ * This is a list of mime types. We use it to validate
+ * the "allowed types" set by the developer
+ *
+ * @param string
+ * @return string
+ */
+ public function mimes_types($mime)
+ {
+ global $mimes;
+
+ if (count($this->mimes) == 0)
+ {
+ if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/mimes'.EXT))
+ {
+ include(APPPATH.'config/'.ENVIRONMENT.'/mimes'.EXT);
+ }
+ elseif (is_file(APPPATH.'config/mimes'.EXT))
+ {
+ include(APPPATH.'config//mimes'.EXT);
+ }
+ else
+ {
+ return FALSE;
+ }
+
+ $this->mimes = $mimes;
+ unset($mimes);
+ }
+
+ return ( ! isset($this->mimes[$mime])) ? FALSE : $this->mimes[$mime];
+ }
+
+ // --------------------------------------------------------------------
+
+ /**
+ * Prep Filename
+ *
+ * Prevents possible script execution from Apache's handling of files multiple extensions
+ * http://httpd.apache.org/docs/1.3/mod/mod_mime.html#multipleext
+ *
+ * @param string
+ * @return string
+ */
+ protected function _prep_filename($filename)
+ {
+ if (strpos($filename, '.') === FALSE OR $this->allowed_types == '*')
+ {
+ return $filename;
+ }
+
+ $parts = explode('.', $filename);
+ $ext = array_pop($parts);
+ $filename = array_shift($parts);
+
+ foreach ($parts as $part)
+ {
+ if ( ! in_array(strtolower($part), $this->allowed_types) OR $this->mimes_types(strtolower($part)) === FALSE)
+ {
+ $filename .= '.'.$part.'_';
+ }
+ else
+ {
+ $filename .= '.'.$part;
+ }
+ }
+
+ $filename .= '.'.$ext;
+
+ return $filename;
+ }
+
+ // --------------------------------------------------------------------
+
+}
+// END Upload Class
+
+/* End of file Upload.php */
+/* Location: ./system/libraries/Upload.php */
\ No newline at end of file
projects / living-lab-site.git / blobdiff