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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 - 2019, 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 - 2019, British Columbia Institute of Technology (https://bcit.ca/) * @license https://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() { $this->config =& get_config(); // Set the base_url automatically if none was provided if (empty($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 links if ($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 links if ($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; } }