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-rw-r--r--system/libraries/Upload.php451
1 files changed, 235 insertions, 216 deletions
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index 0c63886e7..8ad67050d 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -1,8 +1,8 @@
-<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
/**
* CodeIgniter
*
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP 5.2.4 or newer
*
* NOTICE OF LICENSE
*
@@ -25,8 +25,6 @@
* @filesource
*/
-// ------------------------------------------------------------------------
-
/**
* File Uploading Class
*
@@ -38,39 +36,40 @@
*/
class CI_Upload {
- public $max_size = 0;
- public $max_width = 0;
- public $max_height = 0;
- public $max_filename = 0;
+ public $max_size = 0;
+ public $max_width = 0;
+ public $max_height = 0;
+ public $max_filename = 0;
public $max_filename_increment = 100;
- 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 = '';
+ 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 $_file_name_override = '';
/**
* Constructor
*
- * @access public
+ * @param array
+ * @return void
*/
public function __construct($props = array())
{
@@ -79,7 +78,7 @@ class CI_Upload {
$this->initialize($props);
}
- log_message('debug', "Upload Class Initialized");
+ log_message('debug', 'Upload Class Initialized');
}
// --------------------------------------------------------------------
@@ -93,33 +92,33 @@ class CI_Upload {
public function initialize($config = array())
{
$defaults = array(
- 'max_size' => 0,
- 'max_width' => 0,
- 'max_height' => 0,
- 'max_filename' => 0,
- 'max_filename_increment' => 100,
- 'allowed_types' => "",
- 'file_temp' => "",
- 'file_name' => "",
- 'orig_name' => "",
- 'file_type' => "",
- 'file_size' => "",
- 'file_ext' => "",
- 'upload_path' => "",
- 'overwrite' => FALSE,
- 'encrypt_name' => FALSE,
- 'is_image' => FALSE,
- 'image_width' => '',
- 'image_height' => '',
- 'image_type' => '',
- 'image_size_str' => '',
- 'error_msg' => array(),
- 'mimes' => array(),
- 'remove_spaces' => TRUE,
- 'xss_clean' => FALSE,
- 'temp_prefix' => "temp_file_",
- 'client_name' => ''
- );
+ 'max_size' => 0,
+ 'max_width' => 0,
+ 'max_height' => 0,
+ 'max_filename' => 0,
+ 'max_filename_increment' => 100,
+ 'allowed_types' => '',
+ 'file_temp' => '',
+ 'file_name' => '',
+ 'orig_name' => '',
+ 'file_type' => '',
+ 'file_size' => '',
+ 'file_ext' => '',
+ 'upload_path' => '',
+ 'overwrite' => FALSE,
+ 'encrypt_name' => FALSE,
+ 'is_image' => FALSE,
+ 'image_width' => '',
+ 'image_height' => '',
+ 'image_type' => '',
+ 'image_size_str' => '',
+ 'error_msg' => array(),
+ 'mimes' => array(),
+ 'remove_spaces' => TRUE,
+ 'xss_clean' => FALSE,
+ 'temp_prefix' => 'temp_file_',
+ 'client_name' => ''
+ );
foreach ($defaults as $key => $val)
@@ -156,8 +155,7 @@ class CI_Upload {
*/
public function do_upload($field = 'userfile')
{
-
- // Is $_FILES[$field] set? If not, no reason to continue.
+ // Is $_FILES[$field] set? If not, no reason to continue.
if ( ! isset($_FILES[$field]))
{
$this->set_error('upload_no_file_selected');
@@ -176,7 +174,7 @@ class CI_Upload {
{
$error = ( ! isset($_FILES[$field]['error'])) ? 4 : $_FILES[$field]['error'];
- switch($error)
+ switch ($error)
{
case 1: // UPLOAD_ERR_INI_SIZE
$this->set_error('upload_file_exceeds_limit');
@@ -199,19 +197,19 @@ class CI_Upload {
case 8: // UPLOAD_ERR_EXTENSION
$this->set_error('upload_stopped_by_extension');
break;
- default : $this->set_error('upload_no_file_selected');
+ 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'];
$this->_file_mime_type($_FILES[$field]);
- $this->file_type = preg_replace("/^(.+?);.*$/", "\\1", $this->file_type);
+ $this->file_type = preg_replace('/^(.+?);.*$/', '\\1', $this->file_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);
@@ -234,11 +232,10 @@ class CI_Upload {
{
$this->file_name .= $this->file_ext;
}
-
- // An extension was provided, lets have it!
else
{
- $this->file_ext = $this->get_extension($this->_file_name_override);
+ // An extension was provided, lets have it!
+ $this->file_ext = $this->get_extension($this->_file_name_override);
}
if ( ! $this->is_allowed_filetype(TRUE))
@@ -281,7 +278,7 @@ class CI_Upload {
// Remove white spaces in the name
if ($this->remove_spaces == TRUE)
{
- $this->file_name = preg_replace("/\s+/", "_", $this->file_name);
+ $this->file_name = preg_replace('/\s+/', '_', $this->file_name);
}
/*
@@ -305,23 +302,20 @@ class CI_Upload {
/*
* Run the file through the XSS hacking filter
* This helps prevent malicious code from being
- * embedded within a file. Scripts can easily
+ * embedded within a file. Scripts can easily
* be disguised as images or other file types.
*/
- if ($this->xss_clean)
+ if ($this->xss_clean && $this->do_xss_clean() === FALSE)
{
- if ($this->do_xss_clean() === FALSE)
- {
- $this->set_error('upload_unable_to_write_file');
- return FALSE;
- }
+ $this->set_error('upload_unable_to_write_file');
+ return FALSE;
}
/*
* Move the file to the final destination
* To deal with different server configurations
- * we'll attempt to use copy() first. If that fails
- * we'll use move_uploaded_file(). One of the two should
+ * we'll attempt to use copy() first. If that fails
+ * we'll use move_uploaded_file(). One of the two should
* reliably work in most environments
*/
if ( ! @copy($this->file_temp, $this->upload_path.$this->file_name))
@@ -336,7 +330,7 @@ class CI_Upload {
/*
* Set the finalized image dimensions
* This sets the image width/height (assuming the
- * file was an image). We use this information
+ * file was an image). We use this information
* in the "data" function.
*/
$this->set_image_properties($this->upload_path.$this->file_name);
@@ -356,22 +350,22 @@ class CI_Upload {
*/
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,
- );
+ 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' => $this->image_size_str,
+ );
}
// --------------------------------------------------------------------
@@ -442,12 +436,12 @@ class CI_Upload {
/**
* Set Maximum File Size
*
- * @param integer
+ * @param int
* @return void
*/
public function set_max_filesize($n)
{
- $this->max_size = ((int) $n < 0) ? 0: (int) $n;
+ $this->max_size = ((int) $n < 0) ? 0 : (int) $n;
}
// --------------------------------------------------------------------
@@ -455,12 +449,12 @@ class CI_Upload {
/**
* Set Maximum File Name Length
*
- * @param integer
+ * @param int
* @return void
*/
public function set_max_filename($n)
{
- $this->max_filename = ((int) $n < 0) ? 0: (int) $n;
+ $this->max_filename = ((int) $n < 0) ? 0 : (int) $n;
}
// --------------------------------------------------------------------
@@ -468,12 +462,12 @@ class CI_Upload {
/**
* Set Maximum Image Width
*
- * @param integer
+ * @param int
* @return void
*/
public function set_max_width($n)
{
- $this->max_width = ((int) $n < 0) ? 0: (int) $n;
+ $this->max_width = ((int) $n < 0) ? 0 : (int) $n;
}
// --------------------------------------------------------------------
@@ -481,12 +475,12 @@ class CI_Upload {
/**
* Set Maximum Image Height
*
- * @param integer
+ * @param int
* @return void
*/
public function set_max_height($n)
{
- $this->max_height = ((int) $n < 0) ? 0: (int) $n;
+ $this->max_height = ((int) $n < 0) ? 0 : (int) $n;
}
// --------------------------------------------------------------------
@@ -499,7 +493,7 @@ class CI_Upload {
*/
public function set_allowed_types($types)
{
- if ( ! is_array($types) && $types == '*')
+ if ( ! is_array($types) && $types === '*')
{
$this->allowed_types = '*';
return;
@@ -530,10 +524,10 @@ class CI_Upload {
{
$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
+ $this->image_width = $D[0];
+ $this->image_height = $D[1];
+ $this->image_type = isset($types[$D[2]]) ? $types[$D[2]] : 'unknown';
+ $this->image_size_str = $D[3]; // string containing height and width
}
}
}
@@ -551,7 +545,7 @@ class CI_Upload {
*/
public function set_xss_clean($flag = FALSE)
{
- $this->xss_clean = ($flag == TRUE) ? TRUE : FALSE;
+ $this->xss_clean = ($flag == TRUE);
}
// --------------------------------------------------------------------
@@ -573,19 +567,14 @@ class CI_Upload {
{
$this->file_type = 'image/png';
}
-
- if (in_array($this->file_type, $jpeg_mimes))
+ elseif (in_array($this->file_type, $jpeg_mimes))
{
$this->file_type = 'image/jpeg';
}
- $img_mimes = array(
- 'image/gif',
- 'image/jpeg',
- 'image/png',
- );
+ $img_mimes = array('image/gif', 'image/jpeg', 'image/png');
- return (in_array($this->file_type, $img_mimes, TRUE)) ? TRUE : FALSE;
+ return in_array($this->file_type, $img_mimes, TRUE);
}
// --------------------------------------------------------------------
@@ -593,16 +582,17 @@ class CI_Upload {
/**
* Verify that the filetype is allowed
*
+ * @param bool
* @return bool
*/
public function is_allowed_filetype($ignore_mime = FALSE)
{
- if ($this->allowed_types == '*')
+ if ($this->allowed_types === '*')
{
return TRUE;
}
- if (count($this->allowed_types) == 0 OR ! is_array($this->allowed_types))
+ if ( ! is_array($this->allowed_types) OR count($this->allowed_types) === 0)
{
$this->set_error('upload_no_file_types');
return FALSE;
@@ -618,12 +608,9 @@ class CI_Upload {
// Images get some additional checks
$image_types = array('gif', 'jpg', 'jpeg', 'png', 'jpe');
- if (in_array($ext, $image_types))
+ if (in_array($ext, $image_types) && @getimagesize($this->file_temp) === FALSE)
{
- if (getimagesize($this->file_temp) === FALSE)
- {
- return FALSE;
- }
+ return FALSE;
}
if ($ignore_mime === TRUE)
@@ -633,16 +620,13 @@ class CI_Upload {
$mime = $this->mimes_types($ext);
- if (is_array($mime))
+ if (is_array($mime) && in_array($this->file_type, $mime, TRUE))
{
- if (in_array($this->file_type, $mime, TRUE))
- {
- return TRUE;
- }
+ return TRUE;
}
- elseif ($mime == $this->file_type)
+ elseif ($mime === $this->file_type)
{
- return TRUE;
+ return TRUE;
}
return FALSE;
@@ -657,14 +641,7 @@ class CI_Upload {
*/
public function is_allowed_filesize()
{
- if ($this->max_size != 0 AND $this->file_size > $this->max_size)
- {
- return FALSE;
- }
- else
- {
- return TRUE;
- }
+ return ($this->max_size == 0 OR $this->max_size > $this->file_size);
}
// --------------------------------------------------------------------
@@ -685,17 +662,15 @@ class CI_Upload {
{
$D = @getimagesize($this->file_temp);
- if ($this->max_width > 0 AND $D['0'] > $this->max_width)
+ if ($this->max_width > 0 && $D[0] > $this->max_width)
{
return FALSE;
}
- if ($this->max_height > 0 AND $D['1'] > $this->max_height)
+ if ($this->max_height > 0 && $D[1] > $this->max_height)
{
return FALSE;
}
-
- return TRUE;
}
return TRUE;
@@ -708,7 +683,6 @@ class CI_Upload {
*
* Verifies that it is a valid upload path with proper permissions.
*
- *
* @return bool
*/
public function validate_upload_path()
@@ -719,9 +693,9 @@ class CI_Upload {
return FALSE;
}
- if (function_exists('realpath') AND @realpath($this->upload_path) !== FALSE)
+ if (function_exists('realpath') && @realpath($this->upload_path) !== FALSE)
{
- $this->upload_path = str_replace("\\", "/", realpath($this->upload_path));
+ $this->upload_path = str_replace('\\', '/', realpath($this->upload_path));
}
if ( ! @is_dir($this->upload_path))
@@ -736,7 +710,7 @@ class CI_Upload {
return FALSE;
}
- $this->upload_path = preg_replace("/(.+?)\/*$/", "\\1/", $this->upload_path);
+ $this->upload_path = preg_replace('/(.+?)\/*$/', '\\1/', $this->upload_path);
return TRUE;
}
@@ -765,37 +739,31 @@ class CI_Upload {
public function clean_file_name($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);
+ '<!--', '-->',
+ "'", '"',
+ '<', '>',
+ '&', '$',
+ '=',
+ ';',
+ '?',
+ '/',
+ '%20',
+ '%22',
+ '%3c', // <
+ '%253c', // <
+ '%3e', // >
+ '%0e', // >
+ '%28', // (
+ '%29', // )
+ '%2528', // (
+ '%26', // &
+ '%24', // $
+ '%3f', // ?
+ '%3b', // ;
+ '%3d' // =
+ );
+
+ return stripslashes(str_replace($bad, '', $filename));
}
// --------------------------------------------------------------------
@@ -849,7 +817,7 @@ class CI_Upload {
$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
+ // 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) + $current), 0, '.', '');
@@ -859,8 +827,8 @@ class CI_Upload {
// If the file being uploaded is an image, then we should have no problem with XSS attacks (in theory), but
// IE can be fooled into mime-type detecting a malformed image as an html file, thus executing an XSS attack on anyone
- // using IE who looks at the image. It does this by inspecting the first 255 bytes of an image. To get around this
- // CI will itself look at the first 255 bytes of an image to determine its relative safety. This can save a lot of
+ // using IE who looks at the image. It does this by inspecting the first 255 bytes of an image. To get around this
+ // CI will itself look at the first 255 bytes of an image to determine its relative safety. This can save a lot of
// processor power and time if it is actually a clean image, as it will be in nearly all instances _except_ an
// attempted XSS attack.
@@ -934,7 +902,7 @@ class CI_Upload {
*/
public function display_errors($open = '<p>', $close = '</p>')
{
- return (count($this->error_msg) > 0) ? $open . implode($close . $open, $this->error_msg) . $close : '';
+ return (count($this->error_msg) > 0) ? $open.implode($close.$open, $this->error_msg).$close : '';
}
// --------------------------------------------------------------------
@@ -942,7 +910,7 @@ class CI_Upload {
/**
* List of Mime Types
*
- * This is a list of mime types. We use it to validate
+ * This is a list of mime types. We use it to validate
* the "allowed types" set by the developer
*
* @param string
@@ -954,13 +922,13 @@ class CI_Upload {
if (count($this->mimes) == 0)
{
- if (defined('ENVIRONMENT') AND is_file(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'))
+ if (defined('ENVIRONMENT') && is_file(APPPATH.'config/'.ENVIRONMENT.'/mimes.php'))
{
include(APPPATH.'config/'.ENVIRONMENT.'/mimes.php');
}
elseif (is_file(APPPATH.'config/mimes.php'))
{
- include(APPPATH.'config//mimes.php');
+ include(APPPATH.'config/mimes.php');
}
else
{
@@ -968,10 +936,9 @@ class CI_Upload {
}
$this->mimes = $mimes;
- unset($mimes);
}
- return ( ! isset($this->mimes[$mime])) ? FALSE : $this->mimes[$mime];
+ return isset($this->mimes[$mime]) ? $this->mimes[$mime] : FALSE;
}
// --------------------------------------------------------------------
@@ -1008,9 +975,7 @@ class CI_Upload {
}
}
- $filename .= '.'.$ext;
-
- return $filename;
+ return $filename.'.'.$ext;
}
// --------------------------------------------------------------------
@@ -1026,47 +991,104 @@ class CI_Upload {
*/
protected function _file_mime_type($file)
{
- // Use if the Fileinfo extension, if available (only versions above 5.3 support the FILEINFO_MIME_TYPE flag)
- if ( (float) substr(phpversion(), 0, 3) >= 5.3 && function_exists('finfo_file'))
+ // We'll need this to validate the MIME info string (e.g. text/plain; charset=us-ascii)
+ $regexp = '/^([a-z\-]+\/[a-z0-9\-\.\+]+)(;\s.+)?$/';
+
+ /* Fileinfo extension - most reliable method
+ *
+ * Unfortunately, prior to PHP 5.3 - it's only available as a PECL extension and the
+ * more convenient FILEINFO_MIME_TYPE flag doesn't exist.
+ */
+ if (function_exists('finfo_file'))
{
- $finfo = new finfo(FILEINFO_MIME_TYPE);
- if ($finfo !== FALSE) // This is possible, if there is no magic MIME database file found on the system
+ $finfo = finfo_open(FILEINFO_MIME);
+ if (is_resource($finfo)) // It is possible that a FALSE value is returned, if there is no magic MIME database file found on the system
{
- $file_type = $finfo->file($file['tmp_name']);
+ $mime = @finfo_file($finfo, $file['tmp_name']);
+ finfo_close($finfo);
/* According to the comments section of the PHP manual page,
* it is possible that this function returns an empty string
* for some files (e.g. if they don't exist in the magic MIME database)
*/
- if (strlen($file_type) > 1)
+ if (is_string($mime) && preg_match($regexp, $mime, $matches))
{
- $this->file_type = $file_type;
+ $this->file_type = $matches[1];
return;
}
}
}
- // Fall back to the deprecated mime_content_type(), if available
- if (function_exists('mime_content_type'))
- {
- $this->file_type = @mime_content_type($file['tmp_name']);
- return;
- }
-
- /* This is an ugly hack, but UNIX-type systems provide a native way to detect the file type,
- * which is still more secure than depending on the value of $_FILES[$field]['type'].
+ /* This is an ugly hack, but UNIX-type systems provide a "native" way to detect the file type,
+ * which is still more secure than depending on the value of $_FILES[$field]['type'], and as it
+ * was reported in issue #750 (https://github.com/EllisLab/CodeIgniter/issues/750) - it's better
+ * than mime_content_type() as well, hence the attempts to try calling the command line with
+ * three different functions.
*
* Notes:
- * - a 'W' in the substr() expression bellow, would mean that we're using Windows
- * - many system admins would disable the exec() function due to security concerns, hence the function_exists() check
+ * - the DIRECTORY_SEPARATOR comparison ensures that we're not on a Windows system
+ * - many system admins would disable the exec(), shell_exec(), popen() and similar functions
+ * due to security concerns, hence the function_exists() checks
*/
- if (DIRECTORY_SEPARATOR !== '\\' && function_exists('exec'))
+ if (DIRECTORY_SEPARATOR !== '\\')
+ {
+ $cmd = 'file --brief --mime ' . escapeshellarg($file['tmp_name']) . ' 2>&1';
+
+ if (function_exists('exec'))
+ {
+ /* This might look confusing, as $mime is being populated with all of the output when set in the second parameter.
+ * However, we only neeed the last line, which is the actual return value of exec(), and as such - it overwrites
+ * anything that could already be set for $mime previously. This effectively makes the second parameter a dummy
+ * value, which is only put to allow us to get the return status code.
+ */
+ $mime = @exec($cmd, $mime, $return_status);
+ if ($return_status === 0 && is_string($mime) && preg_match($regexp, $mime, $matches))
+ {
+ $this->file_type = $matches[1];
+ return;
+ }
+ }
+
+ if ( (bool) @ini_get('safe_mode') === FALSE && function_exists('shell_exec'))
+ {
+ $mime = @shell_exec($cmd);
+ if (strlen($mime) > 0)
+ {
+ $mime = explode("\n", trim($mime));
+ if (preg_match($regexp, $mime[(count($mime) - 1)], $matches))
+ {
+ $this->file_type = $matches[1];
+ return;
+ }
+ }
+ }
+
+ if (function_exists('popen'))
+ {
+ $proc = @popen($cmd, 'r');
+ if (is_resource($proc))
+ {
+ $mime = @fread($proc, 512);
+ @pclose($proc);
+ if ($mime !== FALSE)
+ {
+ $mime = explode("\n", trim($mime));
+ if (preg_match($regexp, $mime[(count($mime) - 1)], $matches))
+ {
+ $this->file_type = $matches[1];
+ return;
+ }
+ }
+ }
+ }
+ }
+
+ // Fall back to the deprecated mime_content_type(), if available (still better than $_FILES[$field]['type'])
+ if (function_exists('mime_content_type'))
{
- $output = array();
- @exec('file --brief --mime-type ' . escapeshellarg($file['tmp_path']), $output, $return_code);
- if ($return_code === 0 && strlen($output[0]) > 0) // A return status code != 0 would mean failed execution
+ $this->file_type = @mime_content_type($file['tmp_name']);
+ if (strlen($this->file_type) > 0) // It's possible that mime_content_type() returns FALSE or an empty string
{
- $this->file_type = rtrim($output[0]);
return;
}
}
@@ -1074,10 +1096,7 @@ class CI_Upload {
$this->file_type = $file['type'];
}
- // --------------------------------------------------------------------
-
}
-// END Upload Class
/* End of file Upload.php */
-/* Location: ./system/libraries/Upload.php */
+/* Location: ./system/libraries/Upload.php */ \ No newline at end of file
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-03 02:24:55 +0100