Merge CodeIgniter 3 support

1 files changed, 76 insertions, 67 deletions

diff --git a/system/helpers/security_helper.php b/system/helpers/security_helper.php
index cfb1e9d2d..5e2970a5c 100644
--- a/system/helpers/security_helper.php
+++ b/system/helpers/security_helper.php
@@ -1,19 +1,41 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+<?php
 /**
  * CodeIgniter
  *
- * An open source application development framework for PHP 5.1.6 or newer
+ * An open source application development framework for PHP
  *
- * @package		CodeIgniter
- * @author		ExpressionEngine Dev Team
- * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc.
- * @license		http://codeigniter.com/user_guide/license.html
- * @link		http://codeigniter.com
- * @since		Version 1.0
+ * This content is released under the MIT License (MIT)
+ *
+ * Copyright (c) 2014 - 2017, British Columbia Institute of Technology
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * @package	CodeIgniter
+ * @author	EllisLab Dev Team
+ * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
+ * @copyright	Copyright (c) 2014 - 2017, British Columbia Institute of Technology (http://bcit.ca/)
+ * @license	http://opensource.org/licenses/MIT	MIT License
+ * @link	https://codeigniter.com
+ * @since	Version 1.0.0
  * @filesource
  */
-
-// ------------------------------------------------------------------------
+defined('BASEPATH') OR exit('No direct script access allowed');
 
 /**
  * CodeIgniter Security Helpers
@@ -21,108 +43,95 @@
  * @package		CodeIgniter
  * @subpackage	Helpers
  * @category	Helpers
- * @author		ExpressionEngine Dev Team
- * @link		http://codeigniter.com/user_guide/helpers/security_helper.html
+ * @author		EllisLab Dev Team
+ * @link		https://codeigniter.com/user_guide/helpers/security_helper.html
  */
 
 // ------------------------------------------------------------------------
 
-/**
- * XSS Filtering
- *
- * @access	public
- * @param	string
- * @param	bool	whether or not the content is an image file
- * @return	string
- */
 if ( ! function_exists('xss_clean'))
 {
+	/**
+	 * XSS Filtering
+	 *
+	 * @param	string
+	 * @param	bool	whether or not the content is an image file
+	 * @return	string
+	 */
 	function xss_clean($str, $is_image = FALSE)
 	{
-		$CI =& get_instance();
-		return $CI->security->xss_clean($str, $is_image);
+		return get_instance()->security->xss_clean($str, $is_image);
 	}
 }
 
 // ------------------------------------------------------------------------
 
-/**
- * Sanitize Filename
- *
- * @access	public
- * @param	string
- * @return	string
- */
 if ( ! function_exists('sanitize_filename'))
 {
+	/**
+	 * Sanitize Filename
+	 *
+	 * @param	string
+	 * @return	string
+	 */
 	function sanitize_filename($filename)
 	{
-		$CI =& get_instance();
-		return $CI->security->sanitize_filename($filename);
+		return get_instance()->security->sanitize_filename($filename);
 	}
 }
 
 // --------------------------------------------------------------------
 
-/**
- * Hash encode a string
- *
- * @access	public
- * @param	string
- * @return	string
- */
 if ( ! function_exists('do_hash'))
 {
+	/**
+	 * Hash encode a string
+	 *
+	 * @todo	Remove in version 3.1+.
+	 * @deprecated	3.0.0	Use PHP's native hash() instead.
+	 * @param	string	$str
+	 * @param	string	$type = 'sha1'
+	 * @return	string
+	 */
 	function do_hash($str, $type = 'sha1')
 	{
-		if ($type == 'sha1')
-		{
-			return sha1($str);
-		}
-		else
+		if ( ! in_array(strtolower($type), hash_algos()))
 		{
-			return md5($str);
+			$type = 'md5';
 		}
+
+		return hash($type, $str);
 	}
 }
 
 // ------------------------------------------------------------------------
 
-/**
- * Strip Image Tags
- *
- * @access	public
- * @param	string
- * @return	string
- */
 if ( ! function_exists('strip_image_tags'))
 {
+	/**
+	 * Strip Image Tags
+	 *
+	 * @param	string
+	 * @return	string
+	 */
 	function strip_image_tags($str)
 	{
-		$str = preg_replace("#<img\s+.*?src\s*=\s*[\"'](.+?)[\"'].*?\>#", "\\1", $str);
-		$str = preg_replace("#<img\s+.*?src\s*=\s*(.+?).*?\>#", "\\1", $str);
-
-		return $str;
+		return get_instance()->security->strip_image_tags($str);
 	}
 }
 
 // ------------------------------------------------------------------------
 
-/**
- * Convert PHP tags to entities
- *
- * @access	public
- * @param	string
- * @return	string
- */
 if ( ! function_exists('encode_php_tags'))
 {
+	/**
+	 * Convert PHP tags to entities
+	 *
+	 * @param	string
+	 * @return	string
+	 */
 	function encode_php_tags($str)
 	{
-		return str_replace(array('<?php', '<?PHP', '<?', '?>'),  array('&lt;?php', '&lt;?PHP', '&lt;?', '?&gt;'), $str);
+		return str_replace(array('<?', '?>'), array('&lt;?', '?&gt;'), $str);
 	}
 }
-
-
-/* End of file security_helper.php */
-/* Location: ./system/helpers/security_helper.php */
\ No newline at end of file