Skip to content
Navigation Menu
{{ message }}
forked from phpbb/phpbb
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathpath_helper.php
More file actions
452 lines (398 loc) · 11.9 KB
/
Copy pathpath_helper.php
File metadata and controls
452 lines (398 loc) · 11.9 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
namespace phpbb;
/**
* A class with various functions that are related to paths, files and the filesystem
*/
class path_helper
{
/** @var \phpbb\symfony_request */
protected $symfony_request;
/** @var \phpbb\filesystem */
protected $filesystem;
/** @var \phpbb\request\request_interface */
protected $request;
/** @var string */
protected $phpbb_root_path;
/** @var string */
protected $adm_relative_path;
/** @var string */
protected $php_ext;
/** @var string */
protected $web_root_path;
/**
* Constructor
*
* @param \phpbb\symfony_request $symfony_request
* @param \phpbb\filesystem $filesystem
* @param \phpbb\request\request_interface $request
* @param string $phpbb_root_path Relative path to phpBB root
* @param string $php_ext PHP file extension
* @param mixed $adm_relative_path Relative path admin path to adm/ root
*/
public function __construct(\phpbb\symfony_request $symfony_request, \phpbb\filesystem $filesystem, \phpbb\request\request_interface $request, $phpbb_root_path, $php_ext, $adm_relative_path = null)
{
$this->symfony_request = $symfony_request;
$this->filesystem = $filesystem;
$this->request = $request;
$this->phpbb_root_path = $phpbb_root_path;
$this->php_ext = $php_ext;
$this->adm_relative_path = $adm_relative_path;
}
/**
* Get the phpBB root path
*
* @return string
*/
public function get_phpbb_root_path()
{
return $this->phpbb_root_path;
}
/**
* Get the adm root path
*
* @return string
*/
public function get_adm_relative_path()
{
return $this->adm_relative_path;
}
/**
* Get the php extension
*
* @return string
*/
public function get_php_ext()
{
return $this->php_ext;
}
/**
* Update a web path to the correct relative root path
*
* This replaces $phpbb_root_path . some_url with
* get_web_root_path() . some_url
*
* @param string $path The path to be updated
* @return string
*/
public function update_web_root_path($path)
{
if (strpos($path, $this->phpbb_root_path) === 0)
{
$path = substr($path, strlen($this->phpbb_root_path));
$web_root_path = $this->get_web_root_path();
if (substr($web_root_path, -8) === 'app.php/' && substr($path, 0, 7) === 'app.php')
{
$path = substr($path, 8);
}
return $this->filesystem->clean_path($web_root_path . $path);
}
return $path;
}
/**
* Strips away the web root path and prepends the normal root path
*
* This replaces get_web_root_path() . some_url with
* $phpbb_root_path . some_url
*
* @param string $path The path to be updated
* @return string
*/
public function remove_web_root_path($path)
{
if (strpos($path, $this->get_web_root_path()) === 0)
{
$path = substr($path, strlen($this->get_web_root_path()));
return $this->phpbb_root_path . $path;
}
return $path;
}
/**
* Get a relative root path from the current URL
*
* @return string
*/
public function get_web_root_path()
{
if ($this->symfony_request === null)
{
return $this->phpbb_root_path;
}
if (null !== $this->web_root_path)
{
return $this->web_root_path;
}
// We do not need to escape $path_info, $request_uri and $script_name because we can not find their content in the result.
// Path info (e.g. /foo/bar)
$path_info = $this->filesystem->clean_path($this->symfony_request->getPathInfo());
// Full request URI (e.g. phpBB/app.php/foo/bar)
$request_uri = $this->symfony_request->getRequestUri();
// Script name URI (e.g. phpBB/app.php)
$script_name = $this->symfony_request->getScriptName();
/*
* If the path info is empty but we're using app.php, then we
* might be using an empty route like app.php/ which is
* supported by symfony's routing
*/
if ($path_info === '/' && preg_match('/app\.' . $this->php_ext . '\/$/', $request_uri))
{
return $this->web_root_path = $this->filesystem->clean_path('./../' . $this->phpbb_root_path);
}
/*
* If the path info is empty (single /), then we're not using
* a route like app.php/foo/bar
*/
if ($path_info === '/')
{
return $this->web_root_path = $this->phpbb_root_path;
}
/*
* Check AJAX request:
* If the current request is a AJAX we need to fix the paths.
* We need to get the root path based on the Referer, so we can use
* the generated URLs in the template of the Referer. If we do not
* generate the relative path based on the Referer, but based on the
* currently requested URL, the generated URLs will not point to the
* intended locations:
* Referer desired URL desired relative root path
* memberlist.php faq.php ./
* memberlist.php app.php/foo/bar ./
* app.php/foo memberlist.php ../
* app.php/foo app.php/fox ../
* app.php/foo/bar memberlist.php ../../
* ../page.php memberlist.php ./phpBB/
* ../sub/page.php memberlist.php ./../phpBB/
*
* The referer must be specified as a parameter in the query.
*/
if ($this->request->is_ajax() && $this->symfony_request->get('_referer'))
{
// We need to escape $absolute_board_url because it can be partially concatenated to the result.
$absolute_board_url = $this->request->escape($this->symfony_request->getSchemeAndHttpHost() . $this->symfony_request->getBasePath(), true);
$referer_web_root_path = $this->get_web_root_path_from_ajax_referer(
$this->symfony_request->get('_referer'),
$absolute_board_url
);
return $this->web_root_path = $this->phpbb_root_path . $referer_web_root_path;
}
// How many corrections might we need?
$corrections = substr_count($path_info, '/');
/*
* If the script name (e.g. phpBB/app.php) does not exists in the
* requestUri (e.g. phpBB/app.php/foo/template), then we are rewriting
* the URL. So we must reduce the slash count by 1.
*/
if (strpos($request_uri, $script_name) !== 0)
{
$corrections--;
}
// Prepend ../ to the phpbb_root_path as many times as / exists in path_info
$this->web_root_path = $this->filesystem->clean_path(
'./' . str_repeat('../', $corrections) . $this->phpbb_root_path
);
return $this->web_root_path;
}
/**
* Get the web root path of the referer form an ajax request
*
* @param string $absolute_referer_url
* @param string $absolute_board_url
* @return string
*/
public function get_web_root_path_from_ajax_referer($absolute_referer_url, $absolute_board_url)
{
// If the board URL is in the beginning of the referer, this means
// we the referer is in the board URL or a subdirectory of it.
// So we just need to count the / (slashes) in the left over part of
// the referer and prepend ../ the the current root_path, to get the
// web root path of the referer.
if (strpos($absolute_referer_url, $absolute_board_url) === 0)
{
$relative_referer_path = substr($absolute_referer_url, strlen($absolute_board_url));
$has_params = strpos($relative_referer_path, '?');
if ($has_params !== false)
{
$relative_referer_path = substr($relative_referer_path, 0, $has_params);
}
$corrections = substr_count($relative_referer_path, '/');
return $this->phpbb_root_path . str_repeat('../', $corrections - 1);
}
// If not, it's a bit more complicated. We go to the parent directory
// of the referer until we find the remaining referer in the board URL.
// Foreach directory we need to add a ../ to the fixed root_path.
// When we finally found it, we need to remove the remaining referer
// from the board URL, to get the boards root path.
// If the then append these two strings, we get our fixed web root path.
$fixed_root_path = '';
$referer_dir = $absolute_referer_url;
$has_params = strpos($referer_dir, '?');
if ($has_params !== false)
{
$referer_dir = substr($referer_dir, 0, $has_params);
}
// If we do not find a slash at the end of the referer, we come
// from a file. So the first dirname() does not need a traversal
// path correction.
if (substr($referer_dir, -1) !== '/')
{
$referer_dir = dirname($referer_dir);
}
while (strpos($absolute_board_url, $referer_dir) !== 0)
{
$fixed_root_path .= '../';
$referer_dir = dirname($referer_dir);
}
$fixed_root_path .= substr($absolute_board_url, strlen($referer_dir) + 1);
// Add trailing slash
return $this->phpbb_root_path . $fixed_root_path . '/';
}
/**
* Eliminates useless . and .. components from specified URL
*
* @param string $url URL to clean
*
* @return string Cleaned URL
*/
public function clean_url($url)
{
$delimiter_position = strpos($url, '://');
// URL should contain :// but it shouldn't start with it.
// Do not clean URLs that do not fit these constraints.
if (empty($delimiter_position))
{
return $url;
}
$scheme = substr($url, 0, $delimiter_position) . '://';
// Add length of URL delimiter to position
$path = substr($url, $delimiter_position + 3);
return $scheme . $this->filesystem->clean_path($path);
}
/**
* Glue URL parameters together
*
* @param array $params URL parameters in the form of array(name => value)
* @return string Returns the glued string, e.g. name1=value1&name2&name3=value3
*/
public function glue_url_params($params)
{
$_params = array();
foreach ($params as $key => $value)
{
// some parameters do not have value
if ($value !== null)
{
$_params[] = $key . '=' . $value;
}
else
{
$_params[] = $key;
}
}
return implode('&', $_params);
}
/**
* Get the base and parameters of a URL
*
* @param string $url URL to break apart
* @param bool $is_amp Is the parameter separator &. Defaults to true.
* @return array Returns the base and parameters in the form of array('base' => string, 'params' => array(name => value))
*/
public function get_url_parts($url, $is_amp = true)
{
$separator = ($is_amp) ? '&' : '&';
$params = array();
if (strpos($url, '?') !== false)
{
$base = substr($url, 0, strpos($url, '?'));
$args = substr($url, strlen($base) + 1);
$args = ($args) ? explode($separator, $args) : array();
foreach ($args as $argument)
{
if (empty($argument))
{
continue;
}
// some parameters don't have value
if (strpos($argument, '=') !== false)
{
list($key, $value) = explode('=', $argument, 2);
}
else
{
$key = $argument;
$value = null;
}
if ($key === '')
{
continue;
}
$params[$key] = $value;
}
}
else
{
$base = $url;
}
return array(
'base' => $base,
'params' => $params,
);
}
/**
* Strip parameters from an already built URL.
*
* @param string $url URL to strip parameters from
* @param array|string $strip Parameters to strip.
* @param bool $is_amp Is the parameter separator &. Defaults to true.
* @return string Returns the new URL.
*/
public function strip_url_params($url, $strip, $is_amp = true)
{
$url_parts = $this->get_url_parts($url, $is_amp);
$params = $url_parts['params'];
if (!is_array($strip))
{
$strip = array($strip);
}
if (!empty($params))
{
// Strip the parameters off
foreach ($strip as $param)
{
unset($params[$param]);
}
}
return $url_parts['base'] . (($params) ? '?' . $this->glue_url_params($params) : '');
}
/**
* Append parameters to an already built URL.
*
* @param string $url URL to append parameters to
* @param array $new_params Parameters to add in the form of array(name => value)
* @param bool $is_amp Is the parameter separator &. Defaults to true.
* @return string Returns the new URL.
*/
public function append_url_params($url, $new_params, $is_amp = true)
{
$url_parts = $this->get_url_parts($url, $is_amp);
$params = array_merge($url_parts['params'], $new_params);
// Move the sid to the end if it's set
if (isset($params['sid']))
{
$sid = $params['sid'];
unset($params['sid']);
$params['sid'] = $sid;
}
return $url_parts['base'] . (($params) ? '?' . $this->glue_url_params($params) : '');
}
}
You can’t perform that action at this time.