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-rw-r--r--system/libraries/Upload.php194
1 files changed, 109 insertions, 85 deletions
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index 8bdb4be19..c94e4d448 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -26,31 +26,34 @@
*/
class CI_Upload {
- var $max_size = 0;
- var $max_width = 0;
- var $max_height = 0;
- var $max_filename = 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_";
-
+ var $max_size = 0;
+ var $max_width = 0;
+ var $max_height = 0;
+ var $max_filename = 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_";
+ var $client_name = '';
+
+ var $_file_name_override = ''; //@PHP4 (should be private)
+
/**
* Constructor
*
@@ -75,6 +78,7 @@ class CI_Upload {
* @param array
* @return void
*/
+
function initialize($config = array())
{
$defaults = array(
@@ -101,7 +105,8 @@ class CI_Upload {
'mimes' => array(),
'remove_spaces' => TRUE,
'xss_clean' => FALSE,
- 'temp_prefix' => "temp_file_"
+ 'temp_prefix' => "temp_file_",
+ 'client_name' => ''
);
@@ -124,6 +129,10 @@ class CI_Upload {
$this->$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;
}
// --------------------------------------------------------------------
@@ -185,20 +194,16 @@ class CI_Upload {
return FALSE;
}
+
// Set the uploaded data as class variables
$this->file_temp = $_FILES[$field]['tmp_name'];
- $this->file_name = $this->_prep_filename($_FILES[$field]['name']);
- $this->file_size = $_FILES[$field]['size'];
+ $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_ext = $this->get_extension($_FILES[$field]['name']);
+ $this->file_name = $this->_prep_filename($_FILES[$field]['name']);
+ $this->file_ext = $this->get_extension($this->file_name);
+ $this->client_name = $this->file_name;
- // Convert the file size to kilobytes
- if ($this->file_size > 0)
- {
- $this->file_size = round($this->file_size/1024, 2);
- }
-
// Is the file type allowed to be uploaded?
if ( ! $this->is_allowed_filetype())
{
@@ -206,6 +211,25 @@ class CI_Upload {
return FALSE;
}
+ // if we're overriding, let's now make sure the new name and type is allowed
+ if ($this->_file_name_override != '')
+ {
+ $this->file_name = $this->_prep_filename($this->_file_name_override);
+ $this->file_ext = $this->get_extension($this->file_name);
+
+ 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 ( ! $this->is_allowed_filesize())
{
@@ -255,6 +279,21 @@ class CI_Upload {
}
/*
+ * Run the file through the XSS hacking filter
+ * This helps prevent malicious code from being
+ * embedded within a file. Scripts can easily
+ * be disguised as images or other file types.
+ */
+ if ($this->xss_clean)
+ {
+ if ($this->do_xss_clean() === FALSE)
+ {
+ $this->set_error('upload_unable_to_write_file');
+ return FALSE;
+ }
+ }
+
+ /*
* Move the file to the final destination
* To deal with different server configurations
* we'll attempt to use copy() first. If that fails
@@ -269,21 +308,6 @@ class CI_Upload {
return FALSE;
}
}
-
- /*
- * Run the file through the XSS hacking filter
- * This helps prevent malicious code from being
- * embedded within a file. Scripts can easily
- * be disguised as images or other file types.
- */
- if ($this->xss_clean)
- {
- if ($this->do_xss_clean() === FALSE)
- {
- $this->set_error('upload_unable_to_write_file');
- return FALSE;
- }
- }
/*
* Set the finalized image dimensions
@@ -316,6 +340,7 @@ class CI_Upload {
'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' => $this->is_image(),
@@ -558,7 +583,7 @@ class CI_Upload {
* @access public
* @return bool
*/
- function is_allowed_filetype()
+ function is_allowed_filetype($ignore_mime = FALSE)
{
if ($this->allowed_types == '*')
{
@@ -570,36 +595,42 @@ class CI_Upload {
$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
$image_types = array('gif', 'jpg', 'jpeg', 'png', 'jpe');
-
- foreach ($this->allowed_types as $val)
+
+ if (in_array($ext, $image_types))
{
- $mime = $this->mimes_types(strtolower($val));
-
- // Images get some additional checks
- if ($this->file_ext == '.'.$val && in_array($val, $image_types))
+ if (getimagesize($this->file_temp) === FALSE)
{
- if (getimagesize($this->file_temp) === FALSE)
- {
- return FALSE;
- }
- }
-
- if (is_array($mime))
- {
- if (in_array($this->file_type, $mime, TRUE))
- {
- return TRUE;
- }
- }
- else
+ return FALSE;
+ }
+ }
+
+ if ($ignore_mime === TRUE)
+ {
+ return TRUE;
+ }
+
+ $mime = $this->mimes_types($ext);
+
+ if (is_array($mime))
+ {
+ if (in_array($this->file_type, $mime, TRUE))
{
- if ($mime == $this->file_type)
- {
- return TRUE;
- }
- }
+ return TRUE;
+ }
+ }
+ elseif ($mime == $this->file_type)
+ {
+ return TRUE;
}
return FALSE;
@@ -801,7 +832,7 @@ class CI_Upload {
*/
function do_xss_clean()
{
- $file = $this->upload_path.$this->file_name;
+ $file = $this->file_temp;
if (filesize($file) == 0)
{
@@ -968,7 +999,7 @@ class CI_Upload {
foreach ($parts as $part)
{
- if ($this->mimes_types(strtolower($part)) === FALSE)
+ if ( ! in_array(strtolower($part), $this->allowed_types) OR $this->mimes_types(strtolower($part)) === FALSE)
{
$filename .= '.'.$part.'_';
}
@@ -978,13 +1009,6 @@ class CI_Upload {
}
}
- // file name override, since the exact name is provided, no need to
- // run it through a $this->mimes check.
- if ($this->file_name != '')
- {
- $filename = $this->file_name;
- }
-
$filename .= '.'.$ext;
return $filename;
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-01 13:59:17 +0100