1<?php
2/**
3 * CodeIgniter
4 *
5 * An open source application development framework for PHP
6 *
7 * This content is released under the MIT License (MIT)
8 *
9 * Copyright (c) 2014 - 2018, British Columbia Institute of Technology
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a copy
12 * of this software and associated documentation files (the "Software"), to deal
13 * in the Software without restriction, including without limitation the rights
14 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
15 * copies of the Software, and to permit persons to whom the Software is
16 * furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice shall be included in
19 * all copies or substantial portions of the Software.
20 *
21 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
22 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
24 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
26 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
27 * THE SOFTWARE.
28 *
29 * @package	CodeIgniter
30 * @author	EllisLab Dev Team
31 * @copyright	Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
32 * @copyright	Copyright (c) 2014 - 2018, British Columbia Institute of Technology (http://bcit.ca/)
33 * @license	http://opensource.org/licenses/MIT	MIT License
34 * @link	https://codeigniter.com
35 * @since	Version 1.0.0
36 * @filesource
37 */
38defined('BASEPATH') OR exit('No direct script access allowed');
39
40/**
41 * CodeIgniter Path Helpers
42 *
43 * @package		CodeIgniter
44 * @subpackage	Helpers
45 * @category	Helpers
46 * @author		EllisLab Dev Team
47 * @link		https://codeigniter.com/user_guide/helpers/path_helper.html
48 */
49
50// ------------------------------------------------------------------------
51
52if ( ! function_exists('set_realpath'))
53{
54	/**
55	 * Set Realpath
56	 *
57	 * @param	string
58	 * @param	bool	checks to see if the path exists
59	 * @return	string
60	 */
61	function set_realpath($path, $check_existance = FALSE)
62	{
63		// Security check to make sure the path is NOT a URL. No remote file inclusion!
64		if (preg_match('#^(http:\/\/|https:\/\/|www\.|ftp|php:\/\/)#i', $path) OR filter_var($path, FILTER_VALIDATE_IP) === $path)
65		{
66			show_error('The path you submitted must be a local server path, not a URL');
67		}
68
69		// Resolve the path
70		if (realpath($path) !== FALSE)
71		{
72			$path = realpath($path);
73		}
74		elseif ($check_existance && ! is_dir($path) && ! is_file($path))
75		{
76			show_error('Not a valid path: '.$path);
77		}
78
79		// Add a trailing slash, if this is a directory
80		return is_dir($path) ? rtrim($path, DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR : $path;
81	}
82}
83