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/system/core/CodeIgniter.php

https://bitbucket.org/nanomites_webdev/heroframework
PHP | 382 lines | 124 code | 49 blank | 209 comment | 24 complexity | b993ffe8aab8dfb181e2c2b895fa01c1 MD5 | raw file
  1<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
  2/**
  3 * CodeIgniter
  4 *
  5 * An open source application development framework for PHP 5.1.6 or newer
  6 *
  7 * @package		CodeIgniter
  8 * @author		ExpressionEngine Dev Team
  9 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
 10 * @license		http://codeigniter.com/user_guide/license.html
 11 * @link		http://codeigniter.com
 12 * @since		Version 1.0
 13 * @filesource
 14 */
 15
 16// ------------------------------------------------------------------------
 17
 18/**
 19 * System Initialization File
 20 *
 21 * Loads the base classes and executes the request.
 22 *
 23 * @package		CodeIgniter
 24 * @subpackage	codeigniter
 25 * @category	Front-controller
 26 * @author		ExpressionEngine Dev Team
 27 * @link		http://codeigniter.com/user_guide/
 28 */
 29
 30/*
 31 * ------------------------------------------------------
 32 *  Define the CodeIgniter Version
 33 * ------------------------------------------------------
 34 */
 35	define('CI_VERSION', '2.0.3');
 36
 37/*
 38 * ------------------------------------------------------
 39 *  Define the CodeIgniter Branch (Core = TRUE, Reactor = FALSE)
 40 * ------------------------------------------------------
 41 */
 42	define('CI_CORE', FALSE);
 43
 44/*
 45 * ------------------------------------------------------
 46 *  Load the global functions
 47 * ------------------------------------------------------
 48 */
 49	require(BASEPATH.'core/Common.php');
 50
 51/*
 52 * ------------------------------------------------------
 53 *  Load the framework constants
 54 * ------------------------------------------------------
 55 */
 56	if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/constants.php'))
 57	{
 58		require(APPPATH.'config/'.ENVIRONMENT.'/constants.php');
 59	}
 60	else
 61	{
 62		require(APPPATH.'config/constants.php');
 63	}
 64
 65/*
 66 * ------------------------------------------------------
 67 *  Define a custom error handler so we can log PHP errors
 68 * ------------------------------------------------------
 69 */
 70	set_error_handler('_exception_handler');
 71
 72	if ( ! is_php('5.3'))
 73	{
 74		@set_magic_quotes_runtime(0); // Kill magic quotes
 75	}
 76
 77/*
 78 * ------------------------------------------------------
 79 *  Set the subclass_prefix
 80 * ------------------------------------------------------
 81 *
 82 * Normally the "subclass_prefix" is set in the config file.
 83 * The subclass prefix allows CI to know if a core class is
 84 * being extended via a library in the local application
 85 * "libraries" folder. Since CI allows config items to be
 86 * overriden via data set in the main index. php file,
 87 * before proceeding we need to know if a subclass_prefix
 88 * override exists.  If so, we will set this value now,
 89 * before any classes are loaded
 90 * Note: Since the config file data is cached it doesn't
 91 * hurt to load it here.
 92 */
 93	if (isset($assign_to_config['subclass_prefix']) AND $assign_to_config['subclass_prefix'] != '')
 94	{
 95		get_config(array('subclass_prefix' => $assign_to_config['subclass_prefix']));
 96	}
 97
 98/*
 99 * ------------------------------------------------------
100 *  Set a liberal script execution time limit
101 * ------------------------------------------------------
102 */
103	if (function_exists("set_time_limit") == TRUE AND @ini_get("safe_mode") == 0)
104	{
105		@set_time_limit(300);
106	}
107
108/*
109 * ------------------------------------------------------
110 *  Start the timer... tick tock tick tock...
111 * ------------------------------------------------------
112 */
113	$BM =& load_class('Benchmark', 'core');
114	$BM->mark('total_execution_time_start');
115	$BM->mark('loading_time:_base_classes_start');
116
117/*
118 * ------------------------------------------------------
119 *  Instantiate the hooks class
120 * ------------------------------------------------------
121 */
122	$EXT =& load_class('Hooks', 'core');
123
124/*
125 * ------------------------------------------------------
126 *  Is there a "pre_system" hook?
127 * ------------------------------------------------------
128 */
129	$EXT->_call_hook('pre_system');
130
131/*
132 * ------------------------------------------------------
133 *  Instantiate the config class
134 * ------------------------------------------------------
135 */
136	$CFG =& load_class('Config', 'core');
137
138	// Do we have any manually set config items in the index.php file?
139	if (isset($assign_to_config))
140	{
141		$CFG->_assign_to_config($assign_to_config);
142	}
143
144/*
145 * ------------------------------------------------------
146 *  Instantiate the UTF-8 class
147 * ------------------------------------------------------
148 *
149 * Note: Order here is rather important as the UTF-8
150 * class needs to be used very early on, but it cannot
151 * properly determine if UTf-8 can be supported until
152 * after the Config class is instantiated.
153 *
154 */
155
156	$UNI =& load_class('Utf8', 'core');
157
158/*
159 * ------------------------------------------------------
160 *  Instantiate the URI class
161 * ------------------------------------------------------
162 */
163	$URI =& load_class('URI', 'core');
164
165/*
166 * ------------------------------------------------------
167 *  Instantiate the routing class and set the routing
168 * ------------------------------------------------------
169 */
170	$RTR =& load_class('Router', 'core');
171	$RTR->_set_routing();
172
173	// Set any routing overrides that may exist in the main index file
174	if (isset($routing))
175	{
176		$RTR->_set_overrides($routing);
177	}
178
179/*
180 * ------------------------------------------------------
181 *  Instantiate the output class
182 * ------------------------------------------------------
183 */
184	$OUT =& load_class('Output', 'core');
185
186/*
187 * ------------------------------------------------------
188 *	Is there a valid cache file?  If so, we're done...
189 * ------------------------------------------------------
190 */
191	if ($EXT->_call_hook('cache_override') === FALSE)
192	{
193		if ($OUT->_display_cache($CFG, $URI) == TRUE)
194		{
195			exit;
196		}
197	}
198
199/*
200 * -----------------------------------------------------
201 * Load the security class for xss and csrf support
202 * -----------------------------------------------------
203 */
204	$SEC =& load_class('Security', 'core');
205
206/*
207 * ------------------------------------------------------
208 *  Load the Input class and sanitize globals
209 * ------------------------------------------------------
210 */
211	$IN	=& load_class('Input', 'core');
212
213/*
214 * ------------------------------------------------------
215 *  Load the Language class
216 * ------------------------------------------------------
217 */
218	$LANG =& load_class('Lang', 'core');
219
220/*
221 * ------------------------------------------------------
222 *  Load the app controller and local controller
223 * ------------------------------------------------------
224 *
225 */
226	// Load the base controller class
227	require BASEPATH.'core/Controller.php';
228
229	function &get_instance()
230	{
231		return CI_Controller::get_instance();
232	}
233
234
235	if (file_exists(APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php'))
236	{
237		require APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php';
238	}
239
240	// Load the local application controller
241	// Note: The Router class automatically validates the controller path using the router->_validate_request().
242	// If this include fails it means that the default controller in the Routes.php file is not resolving to something valid.
243	if ( ! file_exists(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().'.php'))
244	{
245		show_error('Unable to load your default controller. Please make sure the controller specified in your Routes.php file is valid.');
246	}
247
248	include(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().'.php');
249
250	// Set a mark point for benchmarking
251	$BM->mark('loading_time:_base_classes_end');
252
253/*
254 * ------------------------------------------------------
255 *  Security check
256 * ------------------------------------------------------
257 *
258 *  None of the functions in the app controller or the
259 *  loader class can be called via the URI, nor can
260 *  controller functions that begin with an underscore
261 */
262	$class  = $RTR->fetch_class();
263	$method = $RTR->fetch_method();
264
265	if ( ! class_exists($class)
266		OR strncmp($method, '_', 1) == 0
267		OR in_array(strtolower($method), array_map('strtolower', get_class_methods('CI_Controller')))
268		)
269	{
270		show_404("{$class}/{$method}");
271	}
272
273/*
274 * ------------------------------------------------------
275 *  Is there a "pre_controller" hook?
276 * ------------------------------------------------------
277 */
278	$EXT->_call_hook('pre_controller');
279
280/*
281 * ------------------------------------------------------
282 *  Instantiate the requested controller
283 * ------------------------------------------------------
284 */
285	// Mark a start point so we can benchmark the controller
286	$BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_start');
287
288	$CI = new $class();
289
290/*
291 * ------------------------------------------------------
292 *  Is there a "post_controller_constructor" hook?
293 * ------------------------------------------------------
294 */
295	$EXT->_call_hook('post_controller_constructor');
296
297/*
298 * ------------------------------------------------------
299 *  Call the requested method
300 * ------------------------------------------------------
301 */
302	// Is there a "remap" function? If so, we call it instead
303	if (method_exists($CI, '_remap'))
304	{
305		$CI->_remap($method, array_slice($URI->rsegments, 2));
306	}
307	else
308	{
309		// is_callable() returns TRUE on some versions of PHP 5 for private and protected
310		// methods, so we'll use this workaround for consistent behavior
311		if ( ! in_array(strtolower($method), array_map('strtolower', get_class_methods($CI))))
312		{
313			// Check and see if we are using a 404 override and use it.
314			if ( ! empty($RTR->routes['404_override']))
315			{
316				$x = explode('/', $RTR->routes['404_override']);
317				$class = $x[0];
318				$method = (isset($x[1]) ? $x[1] : 'index');
319				if ( ! class_exists($class))
320				{
321					if ( ! file_exists(APPPATH.'controllers/'.$class.'.php'))
322					{
323						show_404("{$class}/{$method}");
324					}
325
326					include_once(APPPATH.'controllers/'.$class.'.php');
327					unset($CI);
328					$CI = new $class();
329				}
330			}
331			else
332			{
333				show_404("{$class}/{$method}");
334			}
335		}
336
337		// Call the requested method.
338		// Any URI segments present (besides the class/function) will be passed to the method for convenience
339		call_user_func_array(array(&$CI, $method), array_slice($URI->rsegments, 2));
340	}
341
342
343	// Mark a benchmark end point
344	$BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_end');
345
346/*
347 * ------------------------------------------------------
348 *  Is there a "post_controller" hook?
349 * ------------------------------------------------------
350 */
351	$EXT->_call_hook('post_controller');
352
353/*
354 * ------------------------------------------------------
355 *  Send the final rendered output to the browser
356 * ------------------------------------------------------
357 */
358	if ($EXT->_call_hook('display_override') === FALSE)
359	{
360		$OUT->_display();
361	}
362
363/*
364 * ------------------------------------------------------
365 *  Is there a "post_system" hook?
366 * ------------------------------------------------------
367 */
368	$EXT->_call_hook('post_system');
369
370/*
371 * ------------------------------------------------------
372 *  Close the DB connection if one exists
373 * ------------------------------------------------------
374 */
375	if (class_exists('CI_DB') AND isset($CI->db))
376	{
377		$CI->db->close();
378	}
379
380
381/* End of file CodeIgniter.php */
382/* Location: ./system/core/CodeIgniter.php */