<?php if (!defined('BASEPATH')) exit('No direct script access allowed'); /** * CodeIgniter * * An open source application development framework for PHP 4.3.2 or newer * * @package CodeIgniter * @author ExpressionEngine Dev Team * @copyright Copyright (c) 2006, EllisLab, Inc. * @license http://codeigniter.com/user_guide/license.html * @link http://codeigniter.com * @since Version 1.0 * @filesource */ // ------------------------------------------------------------------------ /** * System Front Controller * * Loads the base classes and executes the request. * * @package CodeIgniter * @subpackage codeigniter * @category Front-controller * @author ExpressionEngine Dev Team * @link http://codeigniter.com/user_guide/ */ // CI Version define('CI_VERSION', '1.6.0'); /* * ------------------------------------------------------ * Load the global functions * ------------------------------------------------------ */ require(BASEPATH.'codeigniter/Common'.EXT); /* * ------------------------------------------------------ * Load the compatibility override functions * ------------------------------------------------------ */ require(BASEPATH.'codeigniter/Compat'.EXT); /* * ------------------------------------------------------ * Define a custom error handler so we can log PHP errors * ------------------------------------------------------ */ set_error_handler('_exception_handler'); set_magic_quotes_runtime(0); // Kill magic quotes /* * ------------------------------------------------------ * Start the timer... tick tock tick tock... * ------------------------------------------------------ */ $BM =& load_class('Benchmark'); $BM->mark('total_execution_time_start'); $BM->mark('loading_time_base_classes_start'); /* * ------------------------------------------------------ * Instantiate the hooks class * ------------------------------------------------------ */ $EXT =& load_class('Hooks'); /* * ------------------------------------------------------ * Is there a "pre_system" hook? * ------------------------------------------------------ */ $EXT->_call_hook('pre_system'); /* * ------------------------------------------------------ * Instantiate the base classes * ------------------------------------------------------ */ $CFG =& load_class('Config'); $URI =& load_class('URI'); $RTR =& load_class('Router'); $OUT =& load_class('Output'); /* * ------------------------------------------------------ * Is there a valid cache file? If so, we're done... * ------------------------------------------------------ */ if ($EXT->_call_hook('cache_override') === FALSE) { if ($OUT->_display_cache($CFG, $RTR) == TRUE) { exit; } } /* * ------------------------------------------------------ * Load the remaining base classes * ------------------------------------------------------ */ $IN =& load_class('Input'); $LANG =& load_class('Language'); /* * ------------------------------------------------------ * Load the app controller and local controller * ------------------------------------------------------ * * Note: Due to the poor object handling in PHP 4 we'll * conditionally load different versions of the base * class. Retaining PHP 4 compatibility requires a bit of a hack. * * Note: The Loader class needs to be included first * */ if (floor(phpversion()) < 5) { load_class('Loader', FALSE); require(BASEPATH.'codeigniter/Base4'.EXT); } else { require(BASEPATH.'codeigniter/Base5'.EXT); } // Load the base controller class load_class('Controller', FALSE); // Load the local application controller // Note: The Router class automatically validates the controller path. If this include fails it // means that the default controller in the Routes.php file is not resolving to something valid. if ( ! file_exists(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().EXT)) { show_error('Unable to load your default controller. Please make sure the controller specified in your Routes.php file is valid.'); } include(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().EXT); // Set a mark point for benchmarking $BM->mark('loading_time_base_classes_end'); /* * ------------------------------------------------------ * Security check * ------------------------------------------------------ * * None of the functions in the app controller or the * loader class can be called via the URI, nor can * controller functions that begin with an underscore */ $class = $RTR->fetch_class(); $method = $RTR->fetch_method(); if ( ! class_exists($class) OR $method == 'controller' OR substr($method, 0, 1) == '_' OR in_array($method, get_class_methods('Controller'), TRUE) ) { show_404(); } /* * ------------------------------------------------------ * Is there a "pre_controller" hook? * ------------------------------------------------------ */ $EXT->_call_hook('pre_controller'); /* * ------------------------------------------------------ * Instantiate the controller and call requested method * ------------------------------------------------------ */ // Mark a start point so we can benchmark the controller $BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_start'); $CI = new $class(); // Is this a scaffolding request? if ($RTR->scaffolding_request === TRUE) { if ($EXT->_call_hook('scaffolding_override') === FALSE) { $CI->_ci_scaffolding(); } } else { /* * ------------------------------------------------------ * Is there a "post_controller_constructor" hook? * ------------------------------------------------------ */ $EXT->_call_hook('post_controller_constructor'); // Is there a "remap" function? if (method_exists($CI, '_remap')) { $CI->_remap($method); } else { if ( ! method_exists($CI, $method)) { show_404(); } // Call the requested method. // Any URI segments present (besides the class/function) will be passed to the method for convenience call_user_func_array(array(&$CI, $method), array_slice($URI->rsegments, (($RTR->fetch_directory() == '') ? 2 : 3))); } } // 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? * ------------------------------------------------------ */ $EXT->_call_hook('post_system'); /* * ------------------------------------------------------ * Close the DB connection if one exists * ------------------------------------------------------ */ if (class_exists('CI_DB') AND isset($CI->db)) { $CI->db->close(); } ?>