index.php

<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP
 *
 * This content is released under the MIT License (MIT)
 *
 * Copyright (c) 2014 - 2015, 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. (http://ellislab.com/)
 * @copyright	Copyright (c) 2014 - 2015, British Columbia Institute of Technology (http://bcit.ca/)
 * @license	http://opensource.org/licenses/MIT	MIT License
 * @link	http://codeigniter.com
 * @since	Version 1.0.0
 * @filesource
 */


/*
 *---------------------------------------------------------------
 * GLOBAL CRITICAL ERROR FUNCTION FOR LOGING
 *---------------------------------------------------------------
 *
 
 */

	function log_critical_error($msg)
	{
		$filepath = pathinfo(__FILE__, PATHINFO_DIRNAME).DIRECTORY_SEPARATOR.'application'.DIRECTORY_SEPARATOR.'logs'.DIRECTORY_SEPARATOR.'log-'.date('Y-m-d').'.php';
		$message = '';
		if ( ! file_exists($filepath))
		{
			$newfile = TRUE;
			$message .= "<?php defined('BASEPATH') OR terminate('No direct script access allowed to Logs'); ?>".PHP_EOL.PHP_EOL;
		}
		if ( ! $fp = @fopen($filepath, 'ab'))
		{
			return FALSE;
		}
		$message .= 'ERROR --> ['.date('Y-m-d H:i:s').'] --> '.trim($msg).PHP_EOL;

		flock($fp, LOCK_EX);

		for ($written = 0, $length = strlen($message); $written < $length; $written += $result)
		{
			if (($result = fwrite($fp, substr($message, $written))) === FALSE)
			{
				break;
			}
		}

		flock($fp, LOCK_UN);
		fclose($fp);

		if (isset($newfile) && $newfile === TRUE)
		{
			chmod($filepath, 0644);
		}

		return is_int($result);
	}

	function terminate_script($message = '')
	{
		log_critical_error($message);
		$server_protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.1';
		header($server_protocol.' 500 Internal Server Error', TRUE, 500);
		$templates_path = pathinfo(__FILE__, PATHINFO_DIRNAME).DIRECTORY_SEPARATOR.'application'.DIRECTORY_SEPARATOR.'views'.DIRECTORY_SEPARATOR.'errors'.DIRECTORY_SEPARATOR;
		$templates_path .= 'html'.DIRECTORY_SEPARATOR.'error_500.php';
		if (ob_get_level() > 1)
		{
			ob_end_flush();
		}
		ob_start();
		include($templates_path);
		$buffer = ob_get_contents();
		ob_end_clean();
		echo $buffer;
		exit(1);
	}

/*
 *---------------------------------------------------------------
 * APPLICATION ENVIRONMENT
 *---------------------------------------------------------------
 *
 * You can load different configurations depending on your
 * current environment. Setting the environment also influences
 * things like logging and error reporting.
 *
 * This can be set to anything, but default usage is:
 *
 *     development
 *     testing
 *     production
 *
 * NOTE: If you change these, also change the error_reporting() code below
 */
	define('ENVIRONMENT', isset($_SERVER['CI_ENV']) ? $_SERVER['CI_ENV'] : 'development');

/*
 *---------------------------------------------------------------
 * ERROR REPORTING
 *---------------------------------------------------------------
 *
 * Different environments will require different levels of error reporting.
 * By default development will show errors but testing and live will hide them.
 */
switch (ENVIRONMENT)
{
	case 'development':
		error_reporting(-1);
		ini_set('display_errors', 1);
	break;

	case 'testing':
	case 'production':
		ini_set('display_errors', 0);
		if (version_compare(PHP_VERSION, '5.3', '>='))
		{
			error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED & ~E_STRICT & ~E_USER_NOTICE & ~E_USER_DEPRECATED);
		}
		else
		{
			error_reporting(E_ALL & ~E_NOTICE & ~E_STRICT & ~E_USER_NOTICE);
		}
	break;

	default:
		terminate_script('The application environment is not set correctly.');
}

/*
 *---------------------------------------------------------------
 * SYSTEM FOLDER NAME
 *---------------------------------------------------------------
 *
 * This variable must contain the name of your "system" folder.
 * Include the path if the folder is not in the same directory
 * as this file.
 */
	$system_path = 'system';

/*
 *---------------------------------------------------------------
 * APPLICATION FOLDER NAME
 *---------------------------------------------------------------
 *
 * If you want this front controller to use a different "application"
 * folder than the default one you can set its name here. The folder
 * can also be renamed or relocated anywhere on your server. If
 * you do, use a full server path. For more info please see the user guide:
 * http://codeigniter.com/user_guide/general/managing_apps.html
 *
 * NO TRAILING SLASH!
 */
	$application_folder = 'application';

/*
 *---------------------------------------------------------------
 * VIEW FOLDER NAME
 *---------------------------------------------------------------
 *
 * If you want to move the view folder out of the application
 * folder set the path to the folder here. The folder can be renamed
 * and relocated anywhere on your server. If blank, it will default
 * to the standard location inside your application folder. If you
 * do move this, use the full server path to this folder.
 *
 * NO TRAILING SLASH!
 */
	$view_folder = '';

// --------------------------------------------------------------------
// END OF USER CONFIGURABLE SETTINGS.  DO NOT EDIT BELOW THIS LINE
// --------------------------------------------------------------------

/*
 * ---------------------------------------------------------------
 *  Resolve the system path for increased reliability
 * ---------------------------------------------------------------
 */

	// Set the current directory correctly for CLI requests
	if (defined('STDIN'))
	{
		chdir(dirname(__FILE__));
	}

	if (($_temp = realpath($system_path)) !== FALSE)
	{
		$system_path = $_temp.'/';
	}
	else
	{
		// Ensure there's a trailing slash
		$system_path = rtrim($system_path, '/').'/';
	}

	// Is the system path correct?
	if ( ! is_dir($system_path))
	{
		terminate_script('Your system folder path does not appear to be set correctly. Please open the following file and correct this: '.pathinfo(__FILE__, PATHINFO_BASENAME));
	}

/*
 * -------------------------------------------------------------------
 *  Now that we know the path, set the main path constants
 * -------------------------------------------------------------------
 */
	// The name of THIS file
	define('SELF', pathinfo(__FILE__, PATHINFO_BASENAME));

	// Path to the system folder
	define('BASEPATH', str_replace('\\', '/', $system_path));

	// Path to the front controller (this file)
	define('FCPATH', dirname(__FILE__).'/');

	// Name of the "system folder"
	define('SYSDIR', trim(strrchr(trim(BASEPATH, '/'), '/'), '/'));

	// The path to the "application" folder
	if (is_dir($application_folder))
	{
		if (($_temp = realpath($application_folder)) !== FALSE)
		{
			$application_folder = $_temp;
		}

		define('APPPATH', $application_folder.DIRECTORY_SEPARATOR);
	}
	else
	{
		if ( ! is_dir(BASEPATH.$application_folder.DIRECTORY_SEPARATOR))
		{
			terminate_script('Your application folder path does not appear to be set correctly. Please open the following file and correct this: '.SELF);
		}

		define('APPPATH', BASEPATH.$application_folder.DIRECTORY_SEPARATOR);
	}

	// The path to the "views" folder
	if ( ! is_dir($view_folder))
	{
		if ( ! empty($view_folder) && is_dir(APPPATH.$view_folder.DIRECTORY_SEPARATOR))
		{
			$view_folder = APPPATH.$view_folder;
		}
		elseif ( ! is_dir(APPPATH.'views'.DIRECTORY_SEPARATOR))
		{
			terminate_script('Your view folder path does not appear to be set correctly. Please open the following file and correct this: '.SELF);
		}
		else
		{
			$view_folder = APPPATH.'views';
		}
	}

	if (($_temp = realpath($view_folder)) !== FALSE)
	{
		$view_folder = $_temp.DIRECTORY_SEPARATOR;
	}
	else
	{
		$view_folder = rtrim($view_folder, '/\\').DIRECTORY_SEPARATOR;
	}

	define('VIEWPATH', $view_folder);

/*
 * --------------------------------------------------------------------
 * LOAD THE BOOTSTRAP FILE
 * --------------------------------------------------------------------
 *
 * And away we go...
 */
require_once BASEPATH.'core/CodeIgniter.php';