[eluser]Christian Rößler[/eluser]
i saw som threads about this earlyer but wanted to post a complete description to handle the issue. so here it is:
Put this code into a new file called 'MY_Upload.php' into application/librarys!
Code:
<?php
/**
* Extended / Overloaded CI-Upload Class to handle Flash-Form-Uploaded Images via Application/octet-stream
*
*/
if (!defined('BASEPATH')) exit('No direct script access allowed');
/**
* Extends the CodeIgniter Upload-Class
*/
class MY_Upload extends CI_Upload
{
// determines whether to use application/octet-stream for image-processing...
public $is_flash_upload = FALSE;
/**
* Constructor
*
* @access public
*/
function MY_Upload($props = array())
{
if (count($props) > 0)
{
$this->initialize($props);
}
log_message('debug', 'MY_Upload Class Initialized');
}
//
/**
* initializes the upload-class by settings some properties given in a config-array as parameter
*
* there is only one change in this method:
* is_flash_upload
* this property determines whether to handle a file uploaded by flash as application/octet-stream
* as a image or not.
*/
public function initialize($config = array())
{
$defaults = array(
'max_size' => 0,
'max_width' => 0,
'max_height' => 0,
'allowed_types' => "",
'file_temp' => "",
'file_name' => "",
'orig_name' => "",
'file_type' => "",
'file_size' => "",
'file_ext' => "",
'upload_path' => "",
'overwrite' => FALSE,
'encrypt_name' => FALSE,
'is_image' => FALSE,
'image_width' => '',
'image_height' => '',
'image_type' => '',
'image_size_str' => '',
'error_msg' => array(),
'mimes' => array(),
'remove_spaces' => TRUE,
'xss_clean' => FALSE,
'temp_prefix' => "temp_file_",
'is_flash_upload' => FALSE // <------------------ this parameter is new!
);
foreach ($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;
}
}
}
//
/**
* when using a flash for file-uploads, the file is sent as application/octet-stream
* and CI by default cannot determine whether the file really is a image.
*
* TODO: This function implements a new feature to determine whether the uploaded file
* is a image by a simple header-check. this is enabled only when the class-property
* is_flash_upload is set to TRUE (or 1).
*
*/
public function is_image()
{
$png_mimes;
$jpeg_mimes;
if($this->is_flash_upload)
{
log_message('debug', 'MY_Upload->is_image(): Adding application/octet-stream as valid image-mime-type and doing some headerchecks to verify that.');
// just added the ugly flash-mime type application/octet-stream to the array
$png_mimes = array('image/x-png', 'application/octet-stream');
$jpeg_mimes = array('image/jpg', 'image/jpe', 'image/jpeg', 'image/pjpeg', 'application/octet-stream');
}
else
{
// 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))
{
$this->file_type = 'image/jpeg';
}
if($this->is_flash_upload)
{
$img_mimes = array(
'image/gif',
'image/jpeg',
'image/png',
'application/octet-stream'
);
}
else
{
$img_mimes = array(
'image/gif',
'image/jpeg',
'image/png',
);
}
return (in_array($this->file_type, $img_mimes, TRUE)) ? TRUE : FALSE;
}
//
}
?>
What you also need to do is adding the application/octet-stream into
Code:
application/config/mimes.php
as follows:
Code:
$mimes = array( 'hqx' => 'application/mac-binhex40',
...
...
'jpeg' => array('image/jpeg', 'image/pjpeg', 'application/octet-stream'),
'jpg' => array('image/jpeg', 'image/pjpeg', 'application/octet-stream'),
'jpe' => array('image/jpeg', 'image/pjpeg', 'application/octet-stream'),
'png' => array('image/png', 'image/x-png', 'application/octet-stream'),
...
...
Otherwise you cannot upload those files via flash and an error will be thrown by ci.
