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