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-rw-r--r--system/libraries/Cache/Cache.php2
-rw-r--r--system/libraries/Cache/drivers/Cache_apc.php2
-rw-r--r--system/libraries/Cache/drivers/Cache_dummy.php2
-rw-r--r--system/libraries/Cache/drivers/Cache_file.php2
-rw-r--r--system/libraries/Cache/drivers/Cache_memcached.php2
-rw-r--r--system/libraries/Cart.php2
-rw-r--r--system/libraries/Driver.php2
-rw-r--r--system/libraries/Image_lib.php2
-rw-r--r--system/libraries/Migration.php2
-rw-r--r--system/libraries/Upload.php107
10 files changed, 93 insertions, 32 deletions
diff --git a/system/libraries/Cache/Cache.php b/system/libraries/Cache/Cache.php
index 61e7aa761..261fc367b 100644
--- a/system/libraries/Cache/Cache.php
+++ b/system/libraries/Cache/Cache.php
@@ -6,7 +6,7 @@
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 2.0
diff --git a/system/libraries/Cache/drivers/Cache_apc.php b/system/libraries/Cache/drivers/Cache_apc.php
index 79d91b320..f750e6cb7 100644
--- a/system/libraries/Cache/drivers/Cache_apc.php
+++ b/system/libraries/Cache/drivers/Cache_apc.php
@@ -6,7 +6,7 @@
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 2.0
diff --git a/system/libraries/Cache/drivers/Cache_dummy.php b/system/libraries/Cache/drivers/Cache_dummy.php
index f96a68e27..b11b5b8fc 100644
--- a/system/libraries/Cache/drivers/Cache_dummy.php
+++ b/system/libraries/Cache/drivers/Cache_dummy.php
@@ -6,7 +6,7 @@
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 2.0
diff --git a/system/libraries/Cache/drivers/Cache_file.php b/system/libraries/Cache/drivers/Cache_file.php
index 13e2d1af6..c50043660 100644
--- a/system/libraries/Cache/drivers/Cache_file.php
+++ b/system/libraries/Cache/drivers/Cache_file.php
@@ -6,7 +6,7 @@
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 2.0
diff --git a/system/libraries/Cache/drivers/Cache_memcached.php b/system/libraries/Cache/drivers/Cache_memcached.php
index fc586e025..747842091 100644
--- a/system/libraries/Cache/drivers/Cache_memcached.php
+++ b/system/libraries/Cache/drivers/Cache_memcached.php
@@ -6,7 +6,7 @@
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2011 EllisLab, Inc.
+ * @copyright Copyright (c) 2006 - 2012 EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 2.0
diff --git a/system/libraries/Cart.php b/system/libraries/Cart.php
index ab5a70c98..da47b5a19 100644
--- a/system/libraries/Cart.php
+++ b/system/libraries/Cart.php
@@ -6,7 +6,7 @@
*
* @package CodeIgniter
* @author ExpressionEngine Dev Team
- * @copyright Copyright (c) 2006 - 2011, EllisLab, Inc.
+ * @copyright Copyright (c) 2006 - 2012, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
diff --git a/system/libraries/Driver.php b/system/libraries/Driver.php
index 9881c1eec..f9959ff81 100644
--- a/system/libraries/Driver.php
+++ b/system/libraries/Driver.php
@@ -6,7 +6,7 @@
*
* @package CodeIgniter
* @author EllisLab Dev Team
- * @copyright Copyright (c) 2006 - 2011, EllisLab, Inc.
+ * @copyright Copyright (c) 2006 - 2012, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index 8902f524d..7f905128b 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -208,7 +208,7 @@ class CI_Image_lib {
}
else
{
- if (strpos($this->new_image, '/') === FALSE)
+ if (strpos($this->new_image, '/') === FALSE AND strpos($this->new_image, '\\') === FALSE)
{
$this->dest_folder = $this->source_folder;
$this->dest_image = $this->new_image;
diff --git a/system/libraries/Migration.php b/system/libraries/Migration.php
index 3943ec130..5a41377ea 100644
--- a/system/libraries/Migration.php
+++ b/system/libraries/Migration.php
@@ -6,7 +6,7 @@
*
* @package CodeIgniter
* @author EllisLab Dev Team
- * @copyright Copyright (c) 2006 - 2011, EllisLab, Inc.
+ * @copyright Copyright (c) 2006 - 2012, EllisLab, Inc.
* @license http://codeigniter.com/user_guide/license.html
* @link http://codeigniter.com
* @since Version 1.0
diff --git a/system/libraries/Upload.php b/system/libraries/Upload.php
index 05511b5d3..0e5d73b19 100644
--- a/system/libraries/Upload.php
+++ b/system/libraries/Upload.php
@@ -868,6 +868,10 @@ class CI_Upload {
{
return TRUE; // its an image, no "triggers" detected in the first 256 bytes, we're good
}
+ else
+ {
+ return FALSE;
+ }
}
if (($data = @file_get_contents($file)) === FALSE)
@@ -1018,47 +1022,104 @@ class CI_Upload {
*/
protected function _file_mime_type($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 !== '\\')
{
- $output = array();
- @exec('file --brief --mime-type ' . escapeshellarg($file['tmp_path']), $output, $return_code);
- if ($return_code === 0 && strlen($output[0]) > 0) // A return status code != 0 would mean failed execution
+ $cmd = 'file --brief --mime ' . escapeshellarg($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'))
+ {
+ $this->file_type = @mime_content_type($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;
}
}
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-03 18:36:58 +0100