<?php /** * CodeIgniter * * An open source application development framework for PHP 5.2.4 or newer * * NOTICE OF LICENSE * * Licensed under the Open Software License version 3.0 * * This source file is subject to the Open Software License (OSL 3.0) that is * bundled with this package in the files license.txt / license.rst. It is * also available through the world wide web at this URL: * http://opensource.org/licenses/OSL-3.0 * If you did not receive a copy of the license and are unable to obtain it * through the world wide web, please send an email to * licensing@ellislab.com so we can send you a copy immediately. * * @package CodeIgniter * @author EllisLab Dev Team * @copyright Copyright (c) 2008 - 2013, EllisLab, Inc. (http://ellislab.com/) * @license http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0) * @link http://codeigniter.com * @since Version 1.0 * @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 http://codeigniter.com/user_guide/ */ /** * CodeIgniter Version * * @var string * */ define('CI_VERSION', '3.0-dev'); /* * ------------------------------------------------------ * 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'); /* * ------------------------------------------------------ * Define a custom error handler so we can log PHP errors * ------------------------------------------------------ */ set_error_handler('_exception_handler'); register_shutdown_function('_shutdown_handler'); // Kill magic quotes is_php('5.4') OR @ini_set('magic_quotes_runtime', 0); /* * ------------------------------------------------------ * 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 * overriden 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'])); } /* * ------------------------------------------------------ * 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 * ------------------------------------------------------ */ $CFG =& load_class('Config', 'core'); // Do we have any manually set config items in the index.php file? if (isset($assign_to_config) && is_array($assign_to_config)) { foreach ($assign_to_config as $key => $value) { $CFG->set_item($key, $value); } } /* * ------------------------------------------------------ * Instantiate the UTF-8 class * ------------------------------------------------------ * * Note: Order here is rather important as the UTF-8 * class needs to be used very early on, but it cannot * properly determine if UTF-8 can be supported until * after the Config class is instantiated. * */ $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'); /* * ------------------------------------------------------ * 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 * ------------------------------------------------------ */ $LANG =& load_class('Lang', 'core'); /* * ------------------------------------------------------ * Load the app controller and local controller * ------------------------------------------------------ * */ // Load the base controller class require_once BASEPATH.'core/Controller.php'; /** * Reference to the CI_Controller method. * * Returns current CI instance object * * @return object */ function &get_instance() { return CI_Controller::get_instance(); } if (file_exists(APPPATH.'core/'.$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)); $method = '_remap'; } // WARNING: It appears that there are issues with is_callable() even in PHP 5.2! // Furthermore, there are bug reports and feature/change requests related to it // that make it unreliable to use in this context. Please, DO NOT change this // work-around until a better alternative is available. elseif ( ! in_array(strtolower($method), array_map('strtolower', get_class_methods($class)), TRUE)) { $e404 = TRUE; } } if ($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'); /* End of file CodeIgniter.php */ /* Location: ./system/core/CodeIgniter.php */