system/core/Config.php - code-igniter-v3-giggi - Gitiles

 <?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;
 	}

 }
	<?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;
	}

	}