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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 - 2018, 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 - 2018, 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 = '3.1.9';/** ------------------------------------------------------* 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 classrequire_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($error_class, FALSE);}// Were we in a directory? If so, check for a global overrideelseif ( ! empty($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 1if ( ! $e404){$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');