source: pro-violet-viettel/sourcecode/system/core/CodeIgniter.php @ 625

Last change on this file since 625 was 289, checked in by dungnv, 11 years ago
File size: 11.1 KB
RevLine 
[289]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 * CodeIgniter Version
32 *
33 * @var string
34 *
35 */
36        define('CI_VERSION', '2.1.4');
37
38/**
39 * CodeIgniter Branch (Core = TRUE, Reactor = FALSE)
40 *
41 * @var boolean
42 *
43 */
44        define('CI_CORE', FALSE);
45
46/*
47 * ------------------------------------------------------
48 *  Load the global functions
49 * ------------------------------------------------------
50 */
51        require(BASEPATH.'core/Common.php');
52
53/*
54 * ------------------------------------------------------
55 *  Load the framework constants
56 * ------------------------------------------------------
57 */
58        if (defined('ENVIRONMENT') AND file_exists(APPPATH.'config/'.ENVIRONMENT.'/constants.php'))
59        {
60                require(APPPATH.'config/'.ENVIRONMENT.'/constants.php');
61        }
62        else
63        {
64                require(APPPATH.'config/constants.php');
65        }
66
67/*
68 * ------------------------------------------------------
69 *  Define a custom error handler so we can log PHP errors
70 * ------------------------------------------------------
71 */
72        set_error_handler('_exception_handler');
73
74        if ( ! is_php('5.3'))
75        {
76                @set_magic_quotes_runtime(0); // Kill magic quotes
77        }
78
79/*
80 * ------------------------------------------------------
81 *  Set the subclass_prefix
82 * ------------------------------------------------------
83 *
84 * Normally the "subclass_prefix" is set in the config file.
85 * The subclass prefix allows CI to know if a core class is
86 * being extended via a library in the local application
87 * "libraries" folder. Since CI allows config items to be
88 * overriden via data set in the main index. php file,
89 * before proceeding we need to know if a subclass_prefix
90 * override exists.  If so, we will set this value now,
91 * before any classes are loaded
92 * Note: Since the config file data is cached it doesn't
93 * hurt to load it here.
94 */
95        if (isset($assign_to_config['subclass_prefix']) AND $assign_to_config['subclass_prefix'] != '')
96        {
97                get_config(array('subclass_prefix' => $assign_to_config['subclass_prefix']));
98        }
99
100/*
101 * ------------------------------------------------------
102 *  Set a liberal script execution time limit
103 * ------------------------------------------------------
104 */
105        if (function_exists("set_time_limit") == TRUE AND @ini_get("safe_mode") == 0)
106        {
107                @set_time_limit(300);
108        }
109
110/*
111 * ------------------------------------------------------
112 *  Start the timer... tick tock tick tock...
113 * ------------------------------------------------------
114 */
115        $BM =& load_class('Benchmark', 'core');
116        $BM->mark('total_execution_time_start');
117        $BM->mark('loading_time:_base_classes_start');
118
119/*
120 * ------------------------------------------------------
121 *  Instantiate the hooks class
122 * ------------------------------------------------------
123 */
124        $EXT =& load_class('Hooks', 'core');
125
126/*
127 * ------------------------------------------------------
128 *  Is there a "pre_system" hook?
129 * ------------------------------------------------------
130 */
131        $EXT->_call_hook('pre_system');
132
133/*
134 * ------------------------------------------------------
135 *  Instantiate the config class
136 * ------------------------------------------------------
137 */
138        $CFG =& load_class('Config', 'core');
139
140        // Do we have any manually set config items in the index.php file?
141        if (isset($assign_to_config))
142        {
143                $CFG->_assign_to_config($assign_to_config);
144        }
145
146/*
147 * ------------------------------------------------------
148 *  Instantiate the UTF-8 class
149 * ------------------------------------------------------
150 *
151 * Note: Order here is rather important as the UTF-8
152 * class needs to be used very early on, but it cannot
153 * properly determine if UTf-8 can be supported until
154 * after the Config class is instantiated.
155 *
156 */
157
158        $UNI =& load_class('Utf8', 'core');
159
160/*
161 * ------------------------------------------------------
162 *  Instantiate the URI class
163 * ------------------------------------------------------
164 */
165        $URI =& load_class('URI', 'core');
166
167/*
168 * ------------------------------------------------------
169 *  Instantiate the routing class and set the routing
170 * ------------------------------------------------------
171 */
172        $RTR =& load_class('Router', 'core');
173        $RTR->_set_routing();
174
175        // Set any routing overrides that may exist in the main index file
176        if (isset($routing))
177        {
178                $RTR->_set_overrides($routing);
179        }
180
181/*
182 * ------------------------------------------------------
183 *  Instantiate the output class
184 * ------------------------------------------------------
185 */
186        $OUT =& load_class('Output', 'core');
187
188/*
189 * ------------------------------------------------------
190 *      Is there a valid cache file?  If so, we're done...
191 * ------------------------------------------------------
192 */
193        if ($EXT->_call_hook('cache_override') === FALSE)
194        {
195                if ($OUT->_display_cache($CFG, $URI) == TRUE)
196                {
197                        exit;
198                }
199        }
200
201/*
202 * -----------------------------------------------------
203 * Load the security class for xss and csrf support
204 * -----------------------------------------------------
205 */
206        $SEC =& load_class('Security', 'core');
207
208/*
209 * ------------------------------------------------------
210 *  Load the Input class and sanitize globals
211 * ------------------------------------------------------
212 */
213        $IN     =& load_class('Input', 'core');
214
215/*
216 * ------------------------------------------------------
217 *  Load the Language class
218 * ------------------------------------------------------
219 */
220        $LANG =& load_class('Lang', 'core');
221
222/*
223 * ------------------------------------------------------
224 *  Load the app controller and local controller
225 * ------------------------------------------------------
226 *
227 */
228        // Load the base controller class
229        require BASEPATH.'core/Controller.php';
230
231        function &get_instance()
232        {
233                return CI_Controller::get_instance();
234        }
235
236
237        if (file_exists(APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php'))
238        {
239                require APPPATH.'core/'.$CFG->config['subclass_prefix'].'Controller.php';
240        }
241
242        // Load the local application controller
243        // Note: The Router class automatically validates the controller path using the router->_validate_request().
244        // If this include fails it means that the default controller in the Routes.php file is not resolving to something valid.
245        if ( ! file_exists(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().'.php'))
246        {
247                show_error('Unable to load your default controller. Please make sure the controller specified in your Routes.php file is valid.');
248        }
249
250        include(APPPATH.'controllers/'.$RTR->fetch_directory().$RTR->fetch_class().'.php');
251
252        // Set a mark point for benchmarking
253        $BM->mark('loading_time:_base_classes_end');
254
255/*
256 * ------------------------------------------------------
257 *  Security check
258 * ------------------------------------------------------
259 *
260 *  None of the functions in the app controller or the
261 *  loader class can be called via the URI, nor can
262 *  controller functions that begin with an underscore
263 */
264        $class  = $RTR->fetch_class();
265        $method = $RTR->fetch_method();
266
267        if ( ! class_exists($class)
268                OR strncmp($method, '_', 1) == 0
269                OR in_array(strtolower($method), array_map('strtolower', get_class_methods('CI_Controller')))
270                )
271        {
272                if ( ! empty($RTR->routes['404_override']))
273                {
274                        $x = explode('/', $RTR->routes['404_override']);
275                        $class = $x[0];
276                        $method = (isset($x[1]) ? $x[1] : 'index');
277                        if ( ! class_exists($class))
278                        {
279                                if ( ! file_exists(APPPATH.'controllers/'.$class.'.php'))
280                                {
281                                        show_404("{$class}/{$method}");
282                                }
283
284                                include_once(APPPATH.'controllers/'.$class.'.php');
285                        }
286                }
287                else
288                {
289                        show_404("{$class}/{$method}");
290                }
291        }
292
293/*
294 * ------------------------------------------------------
295 *  Is there a "pre_controller" hook?
296 * ------------------------------------------------------
297 */
298        $EXT->_call_hook('pre_controller');
299
300/*
301 * ------------------------------------------------------
302 *  Instantiate the requested controller
303 * ------------------------------------------------------
304 */
305        // Mark a start point so we can benchmark the controller
306        $BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_start');
307
308        $CI = new $class();
309
310/*
311 * ------------------------------------------------------
312 *  Is there a "post_controller_constructor" hook?
313 * ------------------------------------------------------
314 */
315        $EXT->_call_hook('post_controller_constructor');
316
317/*
318 * ------------------------------------------------------
319 *  Call the requested method
320 * ------------------------------------------------------
321 */
322        // Is there a "remap" function? If so, we call it instead
323        if (method_exists($CI, '_remap'))
324        {
325                $CI->_remap($method, array_slice($URI->rsegments, 2));
326        }
327        else
328        {
329                // is_callable() returns TRUE on some versions of PHP 5 for private and protected
330                // methods, so we'll use this workaround for consistent behavior
331                if ( ! in_array(strtolower($method), array_map('strtolower', get_class_methods($CI))))
332                {
333                        // Check and see if we are using a 404 override and use it.
334                        if ( ! empty($RTR->routes['404_override']))
335                        {
336                                $x = explode('/', $RTR->routes['404_override']);
337                                $class = $x[0];
338                                $method = (isset($x[1]) ? $x[1] : 'index');
339                                if ( ! class_exists($class))
340                                {
341                                        if ( ! file_exists(APPPATH.'controllers/'.$class.'.php'))
342                                        {
343                                                show_404("{$class}/{$method}");
344                                        }
345
346                                        include_once(APPPATH.'controllers/'.$class.'.php');
347                                        unset($CI);
348                                        $CI = new $class();
349                                }
350                        }
351                        else
352                        {
353                                show_404("{$class}/{$method}");
354                        }
355                }
356
357                // Call the requested method.
358                // Any URI segments present (besides the class/function) will be passed to the method for convenience
359                call_user_func_array(array(&$CI, $method), array_slice($URI->rsegments, 2));
360        }
361
362
363        // Mark a benchmark end point
364        $BM->mark('controller_execution_time_( '.$class.' / '.$method.' )_end');
365
366/*
367 * ------------------------------------------------------
368 *  Is there a "post_controller" hook?
369 * ------------------------------------------------------
370 */
371        $EXT->_call_hook('post_controller');
372
373/*
374 * ------------------------------------------------------
375 *  Send the final rendered output to the browser
376 * ------------------------------------------------------
377 */
378        if ($EXT->_call_hook('display_override') === FALSE)
379        {
380                $OUT->_display();
381        }
382
383/*
384 * ------------------------------------------------------
385 *  Is there a "post_system" hook?
386 * ------------------------------------------------------
387 */
388        $EXT->_call_hook('post_system');
389
390/*
391 * ------------------------------------------------------
392 *  Close the DB connection if one exists
393 * ------------------------------------------------------
394 */
395        if (class_exists('CI_DB') AND isset($CI->db))
396        {
397                $CI->db->close();
398        }
399
400
401/* End of file CodeIgniter.php */
402/* Location: ./system/core/CodeIgniter.php */
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