File manager - Edit - /home3/securxia/engage.mark8force.com/system/core/CodeIgniter.php

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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 - 2017, 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 - 2017, 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'); /* * System Initialization File * * Loads the base classes and executes the request. * * @package CodeIgniter * @subpackage CodeIgniter * @category Front-controller * @author EllisLab Dev Team * @link https://codeigniter.com/user_guide/ / /* * CodeIgniter Version * * @var string * / const CI_VERSION = '3.1.5'; / * ------------------------------------------------------ * Load the framework constants * ------------------------------------------------------ / if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/constants.php')) { require_once(APPPATH.'config/'.ENVIRONMENT.'/constants.php'); } if (file_exists(APPPATH.'config/constants.php')) { require_once(APPPATH.'config/constants.php'); } / * ------------------------------------------------------ * Load the global functions * ------------------------------------------------------ / require_once(BASEPATH.'core/Common.php'); / * ------------------------------------------------------ * Security procedures * ------------------------------------------------------ / if ( ! is_php('5.4')) { ini_set('magic_quotes_runtime', 0); if ((bool) ini_get('register_globals')) { $_protected = array( '_SERVER', '_GET', '_POST', '_FILES', '_REQUEST', '_SESSION', '_ENV', '_COOKIE', 'GLOBALS', 'HTTP_RAW_POST_DATA', 'system_path', 'application_folder', 'view_folder', '_protected', '_registered' ); $_registered = ini_get('variables_order'); foreach (array('E' => '_ENV', 'G' => '_GET', 'P' => '_POST', 'C' => '_COOKIE', 'S' => '_SERVER') as $key => $superglobal) { if (strpos($_registered, $key) === FALSE) { continue; } foreach (array_keys($$superglobal) as $var) { if (isset($GLOBALS[$var]) && ! in_array($var, $_protected, TRUE)) { $GLOBALS[$var] = NULL; } } } } } / * ------------------------------------------------------ * Define a custom error handler so we can log PHP errors * ------------------------------------------------------ / set_error_handler('_error_handler'); set_exception_handler('_exception_handler'); //register_shutdown_function('_shutdown_handler'); / * ------------------------------------------------------ * Set the subclass_prefix * ------------------------------------------------------ * * Normally the "subclass_prefix" is set in the config file. * The subclass prefix allows CI to know if a core class is * being extended via a library in the local application * "libraries" folder. Since CI allows config items to be * overridden via data set in the main index.php file, * before proceeding we need to know if a subclass_prefix * override exists. If so, we will set this value now, * before any classes are loaded * Note: Since the config file data is cached it doesn't * hurt to load it here. / if ( ! empty($assign_to_config['subclass_prefix'])) { get_config(array('subclass_prefix' => $assign_to_config['subclass_prefix'])); } / * ------------------------------------------------------ * Should we use a Composer autoloader? * ------------------------------------------------------ / if ($composer_autoload = config_item('composer_autoload')) { if ($composer_autoload === TRUE) { file_exists(APPPATH.'vendor/autoload.php') ? require_once(APPPATH.'vendor/autoload.php') : log_message('error', '$config[\'composer_autoload\'] is set to TRUE but '.APPPATH.'vendor/autoload.php was not found.'); } elseif (file_exists($composer_autoload)) { require_once($composer_autoload); } else { log_message('error', 'Could not find the specified $config[\'composer_autoload\'] path: '.$composer_autoload); } } / * ------------------------------------------------------ * Start the timer... tick tock tick tock... * ------------------------------------------------------ / $BM =& load_class('Benchmark', 'core'); $BM->mark('total_execution_time_start'); $BM->mark('loading_time:_base_classes_start'); / * ------------------------------------------------------ * Instantiate the hooks class * ------------------------------------------------------ / $EXT =& load_class('Hooks', 'core'); / * ------------------------------------------------------ * Is there a "pre_system" hook? * ------------------------------------------------------ / $EXT->call_hook('pre_system'); / * ------------------------------------------------------ * Instantiate the config class * ------------------------------------------------------ * * Note: It is important that Config is loaded first as * most other classes depend on it either directly or by * depending on another class that uses it. * / $CFG =& load_class('Config', 'core'); // Do we have any manually set config items in the index.php file? if (isset($assign_to_config) && is_array($assign_to_config)) { foreach ($assign_to_config as $key => $value) { $CFG->set_item($key, $value); } } / * ------------------------------------------------------ * Important charset-related stuff * ------------------------------------------------------ * * Configure mbstring and/or iconv if they are enabled * and set MB_ENABLED and ICONV_ENABLED constants, so * that we don't repeatedly do extension_loaded() or * function_exists() calls. * * Note: UTF-8 class depends on this. It used to be done * in it's constructor, but it's _not_ class-specific. * / $charset = strtoupper(config_item('charset')); ini_set('default_charset', $charset); if (extension_loaded('mbstring')) { define('MB_ENABLED', TRUE); // mbstring.internal_encoding is deprecated starting with PHP 5.6 // and it's usage triggers E_DEPRECATED messages. @ini_set('mbstring.internal_encoding', $charset); // This is required for mb_convert_encoding() to strip invalid characters. // That's utilized by CI_Utf8, but it's also done for consistency with iconv. mb_substitute_character('none'); } else { define('MB_ENABLED', FALSE); } // There's an ICONV_IMPL constant, but the PHP manual says that using // iconv's predefined constants is "strongly discouraged". if (extension_loaded('iconv')) { define('ICONV_ENABLED', TRUE); // iconv.internal_encoding is deprecated starting with PHP 5.6 // and it's usage triggers E_DEPRECATED messages. @ini_set('iconv.internal_encoding', $charset); } else { define('ICONV_ENABLED', FALSE); } if (is_php('5.6')) { ini_set('php.internal_encoding', $charset); } / * ------------------------------------------------------ * Load compatibility features * ------------------------------------------------------ / require_once(BASEPATH.'core/compat/mbstring.php'); require_once(BASEPATH.'core/compat/hash.php'); require_once(BASEPATH.'core/compat/password.php'); require_once(BASEPATH.'core/compat/standard.php'); / * ------------------------------------------------------ * Instantiate the UTF-8 class * ------------------------------------------------------ / $UNI =& load_class('Utf8', 'core'); / * ------------------------------------------------------ * Instantiate the URI class * ------------------------------------------------------ / $URI =& load_class('URI', 'core'); / * ------------------------------------------------------ * Instantiate the routing class and set the routing * ------------------------------------------------------ / $RTR =& load_class('Router', 'core', isset($routing) ? $routing : NULL); / * ------------------------------------------------------ * Instantiate the output class * ------------------------------------------------------ / $OUT =& load_class('Output', 'core'); / * ------------------------------------------------------ * Is there a valid cache file? If so, we're done... * ------------------------------------------------------ / if ($EXT->call_hook('cache_override') === FALSE && $OUT->_display_cache($CFG, $URI) === TRUE) { exit; } / * ----------------------------------------------------- * Load the security class for xss and csrf support * ----------------------------------------------------- / $SEC =& load_class('Security', 'core'); / * ------------------------------------------------------ * Load the Input class and sanitize globals * ------------------------------------------------------ / $IN =& load_class('Input', 'core'); / * ------------------------------------------------------ * Load the Language class * ------------------------------------------------------ / $LANG =& load_class('Lang', 'core'); / * ------------------------------------------------------ * Load the app controller and local controller * ------------------------------------------------------ * / // Load the base controller class require_once BASEPATH.'core/Controller.php'; /* * Reference to the CI_Controller method. * * Returns current CI instance object * * @return CI_Controller / function &get_instance() { return CI_Controller::get_instance(); } if (file_exists(APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php')) { require_once APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php'; } // Set a mark point for benchmarking $BM->mark('loading_time:_base_classes_end'); / * ------------------------------------------------------ * Sanity checks * ------------------------------------------------------ * * The Router class has already validated the request, * leaving us with 3 options here: * * 1) an empty class name, if we reached the default * controller, but it didn't exist; * 2) a query string which doesn't go through a * file_exists() check * 3) a regular request for a non-existing page * * We handle all of these as a 404 error. * * Furthermore, none of the methods in the app controller * or the loader class can be called via the URI, nor can * controller methods that begin with an underscore. / $e404 = FALSE; $class = ucfirst($RTR->class); $method = $RTR->method; if (empty($class) OR ! file_exists(APPPATH.'controllers/'.$RTR->directory.$class.'.php')) { $e404 = TRUE; } else { require_once(APPPATH.'controllers/'.$RTR->directory.$class.'.php'); if ( ! class_exists($class, FALSE) OR $method[0] === '_' OR method_exists('CI_Controller', $method)) { $e404 = TRUE; } elseif (method_exists($class, '_remap')) { $params = array($method, array_slice($URI->rsegments, 2)); $method = '_remap'; } elseif ( ! method_exists($class, $method)) { $e404 = TRUE; } /* * DO NOT CHANGE THIS, NOTHING ELSE WORKS! * * - method_exists() returns true for non-public methods, which passes the previous elseif * - is_callable() returns false for PHP 4-style constructors, even if there's a __construct() * - method_exists($class, '__construct') won't work because CI_Controller::__construct() is inherited * - People will only complain if this doesn't work, even though it is documented that it shouldn't. * * ReflectionMethod::isConstructor() is the ONLY reliable check, * knowing which method will be executed as a constructor. / elseif ( ! is_callable(array($class, $method))) { $reflection = new ReflectionMethod($class, $method); if ( ! $reflection->isPublic() OR $reflection->isConstructor()) { $e404 = TRUE; } } } if ($e404) { if ( ! empty($RTR->routes['404_override'])) { if (sscanf($RTR->routes['404_override'], '%[^/]/%s', $error_class, $error_method) !== 2) { $error_method = 'index'; } $error_class = ucfirst($error_class); if ( ! class_exists($error_class, FALSE)) { if (file_exists(APPPATH.'controllers/'.$RTR->directory.$error_class.'.php')) { require_once(APPPATH.'controllers/'.$RTR->directory.$error_class.'.php'); $e404 = ! class_exists($error_class, FALSE); } // Were we in a directory? If so, check for a global override elseif ( ! empty($RTR->directory) && file_exists(APPPATH.'controllers/'.$error_class.'.php')) { require_once(APPPATH.'controllers/'.$error_class.'.php'); if (($e404 = ! class_exists($error_class, FALSE)) === FALSE) { $RTR->directory = ''; } } } else { $e404 = FALSE; } } // Did we reset the $e404 flag? If so, set the rsegments, starting from index 1 if ( ! $e404) { $class = $error_class; $method = $error_method; $URI->rsegments = array( 1 => $class, 2 => $method ); } else { show_404($RTR->directory.$class.'/'.$method); } } if ($method !== '_remap') { $params = array_slice($URI->rsegments, 2); } / * ------------------------------------------------------ * Is there a "pre_controller" hook? * ------------------------------------------------------ / $EXT->call_hook('pre_controller'); / * ------------------------------------------------------ * Instantiate the requested controller * ------------------------------------------------------ / // Mark a start point so we can benchmark the controller $BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_start'); $CI = new $class(); / * ------------------------------------------------------ * Is there a "post_controller_constructor" hook? * ------------------------------------------------------ / $EXT->call_hook('post_controller_constructor'); / * ------------------------------------------------------ * Call the requested method * ------------------------------------------------------ / call_user_func_array(array(&$CI, $method), $params); // Mark a benchmark end point $BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_end'); / * ------------------------------------------------------ * Is there a "post_controller" hook? * ------------------------------------------------------ / $EXT->call_hook('post_controller'); / * ------------------------------------------------------ * Send the final rendered output to the browser * ------------------------------------------------------ / if ($EXT->call_hook('display_override') === FALSE) { $OUT->_display(); } / * ------------------------------------------------------ * Is there a "post_system" hook? * ------------------------------------------------------ */ $EXT->call_hook('post_system');

File manager - Edit - /home3/securxia/engage.mark8force.com/system/core/CodeIgniter.php

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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 - 2017, 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 - 2017, 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');

/**
 * System Initialization File
 *
 * Loads the base classes and executes the request.
 *
 * @package		CodeIgniter
 * @subpackage	CodeIgniter
 * @category	Front-controller
 * @author		EllisLab Dev Team
 * @link		https://codeigniter.com/user_guide/
 */

/**
 * CodeIgniter Version
 *
 * @var	string
 *
 */
	const CI_VERSION = '3.1.5';

/*
 * ------------------------------------------------------
 *  Load the framework constants
 * ------------------------------------------------------
 */
	if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/constants.php'))
	{
		require_once(APPPATH.'config/'.ENVIRONMENT.'/constants.php');
	}

if (file_exists(APPPATH.'config/constants.php'))
	{
		require_once(APPPATH.'config/constants.php');
	}

/*
 * ------------------------------------------------------
 *  Load the global functions
 * ------------------------------------------------------
 */
	require_once(BASEPATH.'core/Common.php');

/*
 * ------------------------------------------------------
 * Security procedures
 * ------------------------------------------------------
 */

if ( ! is_php('5.4'))
{
	ini_set('magic_quotes_runtime', 0);

if ((bool) ini_get('register_globals'))
	{
		$_protected = array(
			'_SERVER',
			'_GET',
			'_POST',
			'_FILES',
			'_REQUEST',
			'_SESSION',
			'_ENV',
			'_COOKIE',
			'GLOBALS',
			'HTTP_RAW_POST_DATA',
			'system_path',
			'application_folder',
			'view_folder',
			'_protected',
			'_registered'
		);

$_registered = ini_get('variables_order');
		foreach (array('E' => '_ENV', 'G' => '_GET', 'P' => '_POST', 'C' => '_COOKIE', 'S' => '_SERVER') as $key => $superglobal)
		{
			if (strpos($_registered, $key) === FALSE)
			{
				continue;
			}

foreach (array_keys($$superglobal) as $var)
			{
				if (isset($GLOBALS[$var]) && ! in_array($var, $_protected, TRUE))
				{
					$GLOBALS[$var] = NULL;
				}
			}
		}
	}
}

/*
 * ------------------------------------------------------
 *  Define a custom error handler so we can log PHP errors
 * ------------------------------------------------------
 */
	set_error_handler('_error_handler');
	set_exception_handler('_exception_handler');
	//register_shutdown_function('_shutdown_handler');

/*
 * ------------------------------------------------------
 *  Set the subclass_prefix
 * ------------------------------------------------------
 *
 * Normally the "subclass_prefix" is set in the config file.
 * The subclass prefix allows CI to know if a core class is
 * being extended via a library in the local application
 * "libraries" folder. Since CI allows config items to be
 * overridden via data set in the main index.php file,
 * before proceeding we need to know if a subclass_prefix
 * override exists. If so, we will set this value now,
 * before any classes are loaded
 * Note: Since the config file data is cached it doesn't
 * hurt to load it here.
 */
	if ( ! empty($assign_to_config['subclass_prefix']))
	{
		get_config(array('subclass_prefix' => $assign_to_config['subclass_prefix']));
	}

/*
 * ------------------------------------------------------
 *  Should we use a Composer autoloader?
 * ------------------------------------------------------
 */
	if ($composer_autoload = config_item('composer_autoload'))
	{
		if ($composer_autoload === TRUE)
		{
			file_exists(APPPATH.'vendor/autoload.php')
				? require_once(APPPATH.'vendor/autoload.php')
				: log_message('error', '$config[\'composer_autoload\'] is set to TRUE but '.APPPATH.'vendor/autoload.php was not found.');
		}
		elseif (file_exists($composer_autoload))
		{
			require_once($composer_autoload);
		}
		else
		{
			log_message('error', 'Could not find the specified $config[\'composer_autoload\'] path: '.$composer_autoload);
		}
	}

/*
 * ------------------------------------------------------
 *  Start the timer... tick tock tick tock...
 * ------------------------------------------------------
 */
	$BM =& load_class('Benchmark', 'core');
	$BM->mark('total_execution_time_start');
	$BM->mark('loading_time:_base_classes_start');

/*
 * ------------------------------------------------------
 *  Instantiate the hooks class
 * ------------------------------------------------------
 */
	$EXT =& load_class('Hooks', 'core');

/*
 * ------------------------------------------------------
 *  Is there a "pre_system" hook?
 * ------------------------------------------------------
 */
	$EXT->call_hook('pre_system');

/*
 * ------------------------------------------------------
 *  Instantiate the config class
 * ------------------------------------------------------
 *
 * Note: It is important that Config is loaded first as
 * most other classes depend on it either directly or by
 * depending on another class that uses it.
 *
 */
	$CFG =& load_class('Config', 'core');

// Do we have any manually set config items in the index.php file?
	if (isset($assign_to_config) && is_array($assign_to_config))
	{
		foreach ($assign_to_config as $key => $value)
		{
			$CFG->set_item($key, $value);
		}
	}

/*
 * ------------------------------------------------------
 * Important charset-related stuff
 * ------------------------------------------------------
 *
 * Configure mbstring and/or iconv if they are enabled
 * and set MB_ENABLED and ICONV_ENABLED constants, so
 * that we don't repeatedly do extension_loaded() or
 * function_exists() calls.
 *
 * Note: UTF-8 class depends on this. It used to be done
 * in it's constructor, but it's _not_ class-specific.
 *
 */
	$charset = strtoupper(config_item('charset'));
	ini_set('default_charset', $charset);

if (extension_loaded('mbstring'))
	{
		define('MB_ENABLED', TRUE);
		// mbstring.internal_encoding is deprecated starting with PHP 5.6
		// and it's usage triggers E_DEPRECATED messages.
		@ini_set('mbstring.internal_encoding', $charset);
		// This is required for mb_convert_encoding() to strip invalid characters.
		// That's utilized by CI_Utf8, but it's also done for consistency with iconv.
		mb_substitute_character('none');
	}
	else
	{
		define('MB_ENABLED', FALSE);
	}

// There's an ICONV_IMPL constant, but the PHP manual says that using
	// iconv's predefined constants is "strongly discouraged".
	if (extension_loaded('iconv'))
	{
		define('ICONV_ENABLED', TRUE);
		// iconv.internal_encoding is deprecated starting with PHP 5.6
		// and it's usage triggers E_DEPRECATED messages.
		@ini_set('iconv.internal_encoding', $charset);
	}
	else
	{
		define('ICONV_ENABLED', FALSE);
	}

if (is_php('5.6'))
	{
		ini_set('php.internal_encoding', $charset);
	}

/*
 * ------------------------------------------------------
 *  Load compatibility features
 * ------------------------------------------------------
 */

require_once(BASEPATH.'core/compat/mbstring.php');
	require_once(BASEPATH.'core/compat/hash.php');
	require_once(BASEPATH.'core/compat/password.php');
	require_once(BASEPATH.'core/compat/standard.php');

/*
 * ------------------------------------------------------
 *  Instantiate the UTF-8 class
 * ------------------------------------------------------
 */
	$UNI =& load_class('Utf8', 'core');

/*
 * ------------------------------------------------------
 *  Instantiate the URI class
 * ------------------------------------------------------
 */
	$URI =& load_class('URI', 'core');

/*
 * ------------------------------------------------------
 *  Instantiate the routing class and set the routing
 * ------------------------------------------------------
 */
	$RTR =& load_class('Router', 'core', isset($routing) ? $routing : NULL);

/*
 * ------------------------------------------------------
 *  Instantiate the output class
 * ------------------------------------------------------
 */
	$OUT =& load_class('Output', 'core');

/*
 * ------------------------------------------------------
 *	Is there a valid cache file? If so, we're done...
 * ------------------------------------------------------
 */
	if ($EXT->call_hook('cache_override') === FALSE && $OUT->_display_cache($CFG, $URI) === TRUE)
	{
		exit;
	}

/*
 * -----------------------------------------------------
 * Load the security class for xss and csrf support
 * -----------------------------------------------------
 */
	$SEC =& load_class('Security', 'core');

/*
 * ------------------------------------------------------
 *  Load the Input class and sanitize globals
 * ------------------------------------------------------
 */
	$IN	=& load_class('Input', 'core');

/*
 * ------------------------------------------------------
 *  Load the Language class
 * ------------------------------------------------------
 */
	$LANG =& load_class('Lang', 'core');

/*
 * ------------------------------------------------------
 *  Load the app controller and local controller
 * ------------------------------------------------------
 *
 */
	// Load the base controller class
	require_once BASEPATH.'core/Controller.php';

/**
	 * Reference to the CI_Controller method.
	 *
	 * Returns current CI instance object
	 *
	 * @return CI_Controller
	 */
	function &get_instance()
	{
		return CI_Controller::get_instance();
	}

if (file_exists(APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php'))
	{
		require_once APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php';
	}

// Set a mark point for benchmarking
	$BM->mark('loading_time:_base_classes_end');

/*
 * ------------------------------------------------------
 *  Sanity checks
 * ------------------------------------------------------
 *
 *  The Router class has already validated the request,
 *  leaving us with 3 options here:
 *
 *	1) an empty class name, if we reached the default
 *	   controller, but it didn't exist;
 *	2) a query string which doesn't go through a
 *	   file_exists() check
 *	3) a regular request for a non-existing page
 *
 *  We handle all of these as a 404 error.
 *
 *  Furthermore, none of the methods in the app controller
 *  or the loader class can be called via the URI, nor can
 *  controller methods that begin with an underscore.
 */

$e404 = FALSE;
	$class = ucfirst($RTR->class);
	$method = $RTR->method;

if (empty($class) OR ! file_exists(APPPATH.'controllers/'.$RTR->directory.$class.'.php'))
	{
		$e404 = TRUE;
	}
	else
	{
		require_once(APPPATH.'controllers/'.$RTR->directory.$class.'.php');

if ( ! class_exists($class, FALSE) OR $method[0] === '_' OR method_exists('CI_Controller', $method))
		{
			$e404 = TRUE;
		}
		elseif (method_exists($class, '_remap'))
		{
			$params = array($method, array_slice($URI->rsegments, 2));
			$method = '_remap';
		}
		elseif ( ! method_exists($class, $method))
		{
			$e404 = TRUE;
		}
		/**
		 * DO NOT CHANGE THIS, NOTHING ELSE WORKS!
		 *
		 * - method_exists() returns true for non-public methods, which passes the previous elseif
		 * - is_callable() returns false for PHP 4-style constructors, even if there's a __construct()
		 * - method_exists($class, '__construct') won't work because CI_Controller::__construct() is inherited
		 * - People will only complain if this doesn't work, even though it is documented that it shouldn't.
		 *
		 * ReflectionMethod::isConstructor() is the ONLY reliable check,
		 * knowing which method will be executed as a constructor.
		 */
		elseif ( ! is_callable(array($class, $method)))
		{
			$reflection = new ReflectionMethod($class, $method);
			if ( ! $reflection->isPublic() OR $reflection->isConstructor())
			{
				$e404 = TRUE;
			}
		}
	}

if ($e404)
	{
		if ( ! empty($RTR->routes['404_override']))
		{
			if (sscanf($RTR->routes['404_override'], '%[^/]/%s', $error_class, $error_method) !== 2)
			{
				$error_method = 'index';
			}

$error_class = ucfirst($error_class);

if ( ! class_exists($error_class, FALSE))
			{
				if (file_exists(APPPATH.'controllers/'.$RTR->directory.$error_class.'.php'))
				{
					require_once(APPPATH.'controllers/'.$RTR->directory.$error_class.'.php');
					$e404 = ! class_exists($error_class, FALSE);
				}
				// Were we in a directory? If so, check for a global override
				elseif ( ! empty($RTR->directory) && file_exists(APPPATH.'controllers/'.$error_class.'.php'))
				{
					require_once(APPPATH.'controllers/'.$error_class.'.php');
					if (($e404 = ! class_exists($error_class, FALSE)) === FALSE)
					{
						$RTR->directory = '';
					}
				}
			}
			else
			{
				$e404 = FALSE;
			}
		}

// Did we reset the $e404 flag? If so, set the rsegments, starting from index 1
		if ( ! $e404)
		{
			$class = $error_class;
			$method = $error_method;

$URI->rsegments = array(
				1 => $class,
				2 => $method
			);
		}
		else
		{
			show_404($RTR->directory.$class.'/'.$method);
		}
	}

if ($method !== '_remap')
	{
		$params = array_slice($URI->rsegments, 2);
	}

/*
 * ------------------------------------------------------
 *  Is there a "pre_controller" hook?
 * ------------------------------------------------------
 */
	$EXT->call_hook('pre_controller');

/*
 * ------------------------------------------------------
 *  Instantiate the requested controller
 * ------------------------------------------------------
 */
	// Mark a start point so we can benchmark the controller
	$BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_start');

$CI = new $class();

/*
 * ------------------------------------------------------
 *  Is there a "post_controller_constructor" hook?
 * ------------------------------------------------------
 */
	$EXT->call_hook('post_controller_constructor');

/*
 * ------------------------------------------------------
 *  Call the requested method
 * ------------------------------------------------------
 */
	call_user_func_array(array(&$CI, $method), $params);

// Mark a benchmark end point
	$BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_end');

/*
 * ------------------------------------------------------
 *  Is there a "post_controller" hook?
 * ------------------------------------------------------
 */
	$EXT->call_hook('post_controller');

/*
 * ------------------------------------------------------
 *  Send the final rendered output to the browser
 * ------------------------------------------------------
 */
	if ($EXT->call_hook('display_override') === FALSE)
	{
		$OUT->_display();
	}

/*
 * ------------------------------------------------------
 *  Is there a "post_system" hook?
 * ------------------------------------------------------
 */
	$EXT->call_hook('post_system');