Subversion-Projekte lars-tiefland.ci

<?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');

/**

 * 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 = '3.1.2';

/*

 * ------------------------------------------------------

 *  Load the framework constants

 * ------------------------------------------------------

 */

	if (file_exists(APPPATH.'config/'.ENVIRONMENT.'/constants.php'))

	{

		require_once(APPPATH.'config/'.ENVIRONMENT.'/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, $method)) && strcasecmp($class, $method) === 0)

		{

			$reflection = new ReflectionMethod($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');