<?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 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');
|
Download
