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<?php/*** CodeIgniter** An open source application development framework for PHP** This content is released under the MIT License (MIT)** Copyright (c) 2014 - 2016, 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 - 2016, 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');/*** Config Class** This class contains functions that enable config files to be managed** @package CodeIgniter* @subpackage Libraries* @category Libraries* @author EllisLab Dev Team* @link https://codeigniter.com/user_guide/libraries/config.html*/class CI_Config {/*** List of all loaded config values** @var array*/public $config = array();/*** List of all loaded config files** @var array*/public $is_loaded = array();/*** List of paths to search when trying to load a config file.** @used-by CI_Loader* @var array*/public $_config_paths = array(APPPATH);// --------------------------------------------------------------------/*** Class constructor** Sets the $config data from the primary config.php file as a class variable.** @return void*/public function __construct(){$this->config =& get_config();// Set the base_url automatically if none was providedif (empty($this->config['base_url'])){if (isset($_SERVER['SERVER_ADDR'])){if (strpos($_SERVER['SERVER_ADDR'], ':') !== FALSE){$server_addr = '['.$_SERVER['SERVER_ADDR'].']';}else{$server_addr = $_SERVER['SERVER_ADDR'];}$base_url = (is_https() ? 'https' : 'http').'://'.$server_addr.substr($_SERVER['SCRIPT_NAME'], 0, strpos($_SERVER['SCRIPT_NAME'], basename($_SERVER['SCRIPT_FILENAME'])));}else{$base_url = 'http://localhost/';}$this->set_item('base_url', $base_url);}log_message('info', 'Config Class Initialized');}// --------------------------------------------------------------------/*** Load Config File** @param string $file Configuration file name* @param bool $use_sections Whether configuration values should be loaded into their own section* @param bool $fail_gracefully Whether to just return FALSE or display an error message* @return bool TRUE if the file was loaded correctly or FALSE on failure*/public function load($file = '', $use_sections = FALSE, $fail_gracefully = FALSE){$file = ($file === '') ? 'config' : str_replace('.php', '', $file);$loaded = FALSE;foreach ($this->_config_paths as $path){foreach (array($file, ENVIRONMENT.DIRECTORY_SEPARATOR.$file) as $location){$file_path = $path.'config/'.$location.'.php';if (in_array($file_path, $this->is_loaded, TRUE)){return TRUE;}if ( ! file_exists($file_path)){continue;}include($file_path);if ( ! isset($config) OR ! is_array($config)){if ($fail_gracefully === TRUE){return FALSE;}show_error('Your '.$file_path.' file does not appear to contain a valid configuration array.');}if ($use_sections === TRUE){$this->config[$file] = isset($this->config[$file])? array_merge($this->config[$file], $config): $config;}else{$this->config = array_merge($this->config, $config);}$this->is_loaded[] = $file_path;$config = NULL;$loaded = TRUE;log_message('debug', 'Config file loaded: '.$file_path);}}if ($loaded === TRUE){return TRUE;}elseif ($fail_gracefully === TRUE){return FALSE;}show_error('The configuration file '.$file.'.php does not exist.');}// --------------------------------------------------------------------/*** Fetch a config file item** @param string $item Config item name* @param string $index Index name* @return string|null The configuration item or NULL if the item doesn't exist*/public function item($item, $index = ''){if ($index == ''){return isset($this->config[$item]) ? $this->config[$item] : NULL;}return isset($this->config[$index], $this->config[$index][$item]) ? $this->config[$index][$item] : NULL;}// --------------------------------------------------------------------/*** Fetch a config file item with slash appended (if not empty)** @param string $item Config item name* @return string|null The configuration item or NULL if the item doesn't exist*/public function slash_item($item){if ( ! isset($this->config[$item])){return NULL;}elseif (trim($this->config[$item]) === ''){return '';}return rtrim($this->config[$item], '/').'/';}// --------------------------------------------------------------------/*** Site URL** Returns base_url . index_page [. uri_string]** @uses CI_Config::_uri_string()** @param string|string[] $uri URI string or an array of segments* @param string $protocol* @return string*/public function site_url($uri = '', $protocol = NULL){$base_url = $this->slash_item('base_url');if (isset($protocol)){// For protocol-relative linksif ($protocol === ''){$base_url = substr($base_url, strpos($base_url, '//'));}else{$base_url = $protocol.substr($base_url, strpos($base_url, '://'));}}if (empty($uri)){return $base_url.$this->item('index_page');}$uri = $this->_uri_string($uri);if ($this->item('enable_query_strings') === FALSE){$suffix = isset($this->config['url_suffix']) ? $this->config['url_suffix'] : '';if ($suffix !== ''){if (($offset = strpos($uri, '?')) !== FALSE){$uri = substr($uri, 0, $offset).$suffix.substr($uri, $offset);}else{$uri .= $suffix;}}return $base_url.$this->slash_item('index_page').$uri;}elseif (strpos($uri, '?') === FALSE){$uri = '?'.$uri;}return $base_url.$this->item('index_page').$uri;}// -------------------------------------------------------------/*** Base URL** Returns base_url [. uri_string]** @uses CI_Config::_uri_string()** @param string|string[] $uri URI string or an array of segments* @param string $protocol* @return string*/public function base_url($uri = '', $protocol = NULL){$base_url = $this->slash_item('base_url');if (isset($protocol)){// For protocol-relative linksif ($protocol === ''){$base_url = substr($base_url, strpos($base_url, '//'));}else{$base_url = $protocol.substr($base_url, strpos($base_url, '://'));}}return $base_url.$this->_uri_string($uri);}// -------------------------------------------------------------/*** Build URI string** @used-by CI_Config::site_url()* @used-by CI_Config::base_url()** @param string|string[] $uri URI string or an array of segments* @return string*/protected function _uri_string($uri){if ($this->item('enable_query_strings') === FALSE){is_array($uri) && $uri = implode('/', $uri);return ltrim($uri, '/');}elseif (is_array($uri)){return http_build_query($uri);}return $uri;}// --------------------------------------------------------------------/*** System URL** @deprecated 3.0.0 Encourages insecure practices* @return string*/public function system_url(){$x = explode('/', preg_replace('|/*(.+?)/*$|', '\\1', BASEPATH));return $this->slash_item('base_url').end($x).'/';}// --------------------------------------------------------------------/*** Set a config file item** @param string $item Config item key* @param string $value Config item value* @return void*/public function set_item($item, $value){$this->config[$item] = $value;}}