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
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
|
<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2016, ownCloud, Inc.
*
* @author b108@volgograd "b108@volgograd"
* @author Bart Visscher <bartv@thisnet.nl>
* @author Bernhard Posselt <dev@bernhard-posselt.com>
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
* @author Daniel Kesselberg <mail@danielkesselberg.de>
* @author Georg Ehrke <oc.list@georgehrke.com>
* @author J0WI <J0WI@users.noreply.github.com>
* @author Joas Schilling <coding@schilljs.com>
* @author Juan Pablo Villafáñez <jvillafanez@solidgear.es>
* @author Julius Härtl <jus@bitgrid.net>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Mitar <mitar.git@tnode.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Oliver Wegner <void1976@gmail.com>
* @author Robin Appelman <robin@icewind.nl>
* @author Robin McCorkell <robin@mccorkell.me.uk>
* @author Roeland Jago Douma <roeland@famdouma.nl>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Thomas Tanghus <thomas@tanghus.net>
* @author Vincent Petry <vincent@nextcloud.com>
* @author Simon Leiner <simon@leiner.me>
* @author Stanimir Bozhilov <stanimir@audriga.com>
*
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OC\AppFramework\Http;
use OC\Security\CSRF\CsrfToken;
use OC\Security\CSRF\CsrfTokenManager;
use OC\Security\TrustedDomainHelper;
use OCP\IConfig;
use OCP\IRequest;
use OCP\IRequestId;
use Symfony\Component\HttpFoundation\IpUtils;
/**
* Class for accessing variables in the request.
* This class provides an immutable object with request variables.
*
* @property mixed[] cookies
* @property mixed[] env
* @property mixed[] files
* @property string method
* @property mixed[] parameters
* @property mixed[] server
*/
class Request implements \ArrayAccess, \Countable, IRequest {
public const USER_AGENT_IE = '/(MSIE)|(Trident)/';
// Microsoft Edge User Agent from https://msdn.microsoft.com/en-us/library/hh869301(v=vs.85).aspx
public const USER_AGENT_MS_EDGE = '/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\) Chrome\/[0-9.]+ (Mobile Safari|Safari)\/[0-9.]+ Edge\/[0-9.]+$/';
// Firefox User Agent from https://developer.mozilla.org/en-US/docs/Web/HTTP/Gecko_user_agent_string_reference
public const USER_AGENT_FIREFOX = '/^Mozilla\/5\.0 \([^)]+\) Gecko\/[0-9.]+ Firefox\/[0-9.]+$/';
// Chrome User Agent from https://developer.chrome.com/multidevice/user-agent
public const USER_AGENT_CHROME = '/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\)( Ubuntu Chromium\/[0-9.]+|) Chrome\/[0-9.]+ (Mobile Safari|Safari)\/[0-9.]+( (Vivaldi|Brave|OPR)\/[0-9.]+|)$/';
// Safari User Agent from http://www.useragentstring.com/pages/Safari/
public const USER_AGENT_SAFARI = '/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\) Version\/[0-9.]+ Safari\/[0-9.A-Z]+$/';
// Android Chrome user agent: https://developers.google.com/chrome/mobile/docs/user-agent
public const USER_AGENT_ANDROID_MOBILE_CHROME = '#Android.*Chrome/[.0-9]*#';
public const USER_AGENT_FREEBOX = '#^Mozilla/5\.0$#';
public const REGEX_LOCALHOST = '/^(127\.0\.0\.1|localhost|\[::1\])$/';
protected string $inputStream;
protected $content;
protected array $items = [];
protected array $allowedKeys = [
'get',
'post',
'files',
'server',
'env',
'cookies',
'urlParams',
'parameters',
'method',
'requesttoken',
];
protected IRequestId $requestId;
protected IConfig $config;
protected ?CsrfTokenManager $csrfTokenManager;
protected bool $contentDecoded = false;
/**
* @param array $vars An associative array with the following optional values:
* - array 'urlParams' the parameters which were matched from the URL
* - array 'get' the $_GET array
* - array|string 'post' the $_POST array or JSON string
* - array 'files' the $_FILES array
* - array 'server' the $_SERVER array
* - array 'env' the $_ENV array
* - array 'cookies' the $_COOKIE array
* - string 'method' the request method (GET, POST etc)
* - string|false 'requesttoken' the requesttoken or false when not available
* @param IRequestId $requestId
* @param IConfig $config
* @param CsrfTokenManager|null $csrfTokenManager
* @param string $stream
* @see https://www.php.net/manual/en/reserved.variables.php
*/
public function __construct(array $vars,
IRequestId $requestId,
IConfig $config,
CsrfTokenManager $csrfTokenManager = null,
string $stream = 'php://input') {
$this->inputStream = $stream;
$this->items['params'] = [];
$this->requestId = $requestId;
$this->config = $config;
$this->csrfTokenManager = $csrfTokenManager;
if (!array_key_exists('method', $vars)) {
$vars['method'] = 'GET';
}
foreach ($this->allowedKeys as $name) {
$this->items[$name] = $vars[$name] ?? [];
}
$this->items['parameters'] = array_merge(
$this->items['get'],
$this->items['post'],
$this->items['urlParams'],
$this->items['params']
);
}
/**
* @param array $parameters
*/
public function setUrlParameters(array $parameters) {
$this->items['urlParams'] = $parameters;
$this->items['parameters'] = array_merge(
$this->items['parameters'],
$this->items['urlParams']
);
}
/**
* Countable method
* @return int
*/
public function count(): int {
return \count($this->items['parameters']);
}
/**
* ArrayAccess methods
*
* Gives access to the combined GET, POST and urlParams arrays
*
* Examples:
*
* $var = $request['myvar'];
*
* or
*
* if(!isset($request['myvar']) {
* // Do something
* }
*
* $request['myvar'] = 'something'; // This throws an exception.
*
* @param string $offset The key to lookup
* @return boolean
*/
public function offsetExists($offset): bool {
return isset($this->items['parameters'][$offset]);
}
/**
* @see offsetExists
* @param string $offset
* @return mixed
*/
#[\ReturnTypeWillChange]
public function offsetGet($offset) {
return isset($this->items['parameters'][$offset])
? $this->items['parameters'][$offset]
: null;
}
/**
* @see offsetExists
* @param string $offset
* @param mixed $value
*/
public function offsetSet($offset, $value): void {
throw new \RuntimeException('You cannot change the contents of the request object');
}
/**
* @see offsetExists
* @param string $offset
*/
public function offsetUnset($offset): void {
throw new \RuntimeException('You cannot change the contents of the request object');
}
/**
* Magic property accessors
* @param string $name
* @param mixed $value
*/
public function __set($name, $value) {
throw new \RuntimeException('You cannot change the contents of the request object');
}
/**
* Access request variables by method and name.
* Examples:
*
* $request->post['myvar']; // Only look for POST variables
* $request->myvar; or $request->{'myvar'}; or $request->{$myvar}
* Looks in the combined GET, POST and urlParams array.
*
* If you access e.g. ->post but the current HTTP request method
* is GET a \LogicException will be thrown.
*
* @param string $name The key to look for.
* @throws \LogicException
* @return mixed|null
*/
public function __get($name) {
switch ($name) {
case 'put':
case 'patch':
case 'get':
case 'post':
if ($this->method !== strtoupper($name)) {
throw new \LogicException(sprintf('%s cannot be accessed in a %s request.', $name, $this->method));
}
return $this->getContent();
case 'files':
case 'server':
case 'env':
case 'cookies':
case 'urlParams':
case 'method':
return isset($this->items[$name])
? $this->items[$name]
: null;
case 'parameters':
case 'params':
if ($this->isPutStreamContent()) {
return $this->items['parameters'];
}
return $this->getContent();
default:
return isset($this[$name])
? $this[$name]
: null;
}
}
/**
* @param string $name
* @return bool
*/
public function __isset($name) {
if (\in_array($name, $this->allowedKeys, true)) {
return true;
}
return isset($this->items['parameters'][$name]);
}
/**
* @param string $id
*/
public function __unset($id) {
throw new \RuntimeException('You cannot change the contents of the request object');
}
/**
* Returns the value for a specific http header.
*
* This method returns an empty string if the header did not exist.
*
* @param string $name
* @return string
*/
public function getHeader(string $name): string {
$name = strtoupper(str_replace('-', '_', $name));
if (isset($this->server['HTTP_' . $name])) {
return $this->server['HTTP_' . $name];
}
// There's a few headers that seem to end up in the top-level
// server array.
switch ($name) {
case 'CONTENT_TYPE':
case 'CONTENT_LENGTH':
case 'REMOTE_ADDR':
if (isset($this->server[$name])) {
return $this->server[$name];
}
break;
}
return '';
}
/**
* Lets you access post and get parameters by the index
* In case of json requests the encoded json body is accessed
*
* @param string $key the key which you want to access in the URL Parameter
* placeholder, $_POST or $_GET array.
* The priority how they're returned is the following:
* 1. URL parameters
* 2. POST parameters
* 3. GET parameters
* @param mixed $default If the key is not found, this value will be returned
* @return mixed the content of the array
*/
public function getParam(string $key, $default = null) {
return isset($this->parameters[$key])
? $this->parameters[$key]
: $default;
}
/**
* Returns all params that were received, be it from the request
* (as GET or POST) or through the URL by the route
* @return array the array with all parameters
*/
public function getParams(): array {
return is_array($this->parameters) ? $this->parameters : [];
}
/**
* Returns the method of the request
* @return string the method of the request (POST, GET, etc)
*/
public function getMethod(): string {
return $this->method;
}
/**
* Shortcut for accessing an uploaded file through the $_FILES array
* @param string $key the key that will be taken from the $_FILES array
* @return array the file in the $_FILES element
*/
public function getUploadedFile(string $key) {
return isset($this->files[$key]) ? $this->files[$key] : null;
}
/**
* Shortcut for getting env variables
* @param string $key the key that will be taken from the $_ENV array
* @return array the value in the $_ENV element
*/
public function getEnv(string $key) {
return isset($this->env[$key]) ? $this->env[$key] : null;
}
/**
* Shortcut for getting cookie variables
* @param string $key the key that will be taken from the $_COOKIE array
* @return string the value in the $_COOKIE element
*/
public function getCookie(string $key) {
return isset($this->cookies[$key]) ? $this->cookies[$key] : null;
}
/**
* Returns the request body content.
*
* If the HTTP request method is PUT and the body
* not application/x-www-form-urlencoded or application/json a stream
* resource is returned, otherwise an array.
*
* @return array|string|resource The request body content or a resource to read the body stream.
*
* @throws \LogicException
*/
protected function getContent() {
// If the content can't be parsed into an array then return a stream resource.
if ($this->isPutStreamContent()) {
if ($this->content === false) {
throw new \LogicException(
'"put" can only be accessed once if not '
. 'application/x-www-form-urlencoded or application/json.'
);
}
$this->content = false;
return fopen($this->inputStream, 'rb');
} else {
$this->decodeContent();
return $this->items['parameters'];
}
}
private function isPutStreamContent(): bool {
return $this->method === 'PUT'
&& $this->getHeader('Content-Length') !== '0'
&& $this->getHeader('Content-Length') !== ''
&& strpos($this->getHeader('Content-Type'), 'application/x-www-form-urlencoded') === false
&& strpos($this->getHeader('Content-Type'), 'application/json') === false;
}
/**
* Attempt to decode the content and populate parameters
*/
protected function decodeContent() {
if ($this->contentDecoded) {
return;
}
$params = [];
// 'application/json' and other JSON-related content types must be decoded manually.
if (preg_match(self::JSON_CONTENT_TYPE_REGEX, $this->getHeader('Content-Type')) === 1) {
$params = json_decode(file_get_contents($this->inputStream), true);
if (\is_array($params) && \count($params) > 0) {
$this->items['params'] = $params;
if ($this->method === 'POST') {
$this->items['post'] = $params;
}
}
// Handle application/x-www-form-urlencoded for methods other than GET
// or post correctly
} elseif ($this->method !== 'GET'
&& $this->method !== 'POST'
&& strpos($this->getHeader('Content-Type'), 'application/x-www-form-urlencoded') !== false) {
parse_str(file_get_contents($this->inputStream), $params);
if (\is_array($params)) {
$this->items['params'] = $params;
}
}
if (\is_array($params)) {
$this->items['parameters'] = array_merge($this->items['parameters'], $params);
}
$this->contentDecoded = true;
}
/**
* Checks if the CSRF check was correct
* @return bool true if CSRF check passed
*/
public function passesCSRFCheck(): bool {
if ($this->csrfTokenManager === null) {
return false;
}
if (!$this->passesStrictCookieCheck()) {
return false;
}
if (isset($this->items['get']['requesttoken'])) {
$token = $this->items['get']['requesttoken'];
} elseif (isset($this->items['post']['requesttoken'])) {
$token = $this->items['post']['requesttoken'];
} elseif (isset($this->items['server']['HTTP_REQUESTTOKEN'])) {
$token = $this->items['server']['HTTP_REQUESTTOKEN'];
} else {
//no token found.
return false;
}
$token = new CsrfToken($token);
return $this->csrfTokenManager->isTokenValid($token);
}
/**
* Whether the cookie checks are required
*
* @return bool
*/
private function cookieCheckRequired(): bool {
if ($this->getHeader('OCS-APIREQUEST')) {
return false;
}
if ($this->getCookie(session_name()) === null && $this->getCookie('nc_token') === null) {
return false;
}
return true;
}
/**
* Wrapper around session_get_cookie_params
*
* @return array
*/
public function getCookieParams(): array {
return session_get_cookie_params();
}
/**
* Appends the __Host- prefix to the cookie if applicable
*
* @param string $name
* @return string
*/
protected function getProtectedCookieName(string $name): string {
$cookieParams = $this->getCookieParams();
$prefix = '';
if ($cookieParams['secure'] === true && $cookieParams['path'] === '/') {
$prefix = '__Host-';
}
return $prefix.$name;
}
/**
* Checks if the strict cookie has been sent with the request if the request
* is including any cookies.
*
* @return bool
* @since 9.1.0
*/
public function passesStrictCookieCheck(): bool {
if (!$this->cookieCheckRequired()) {
return true;
}
$cookieName = $this->getProtectedCookieName('nc_sameSiteCookiestrict');
if ($this->getCookie($cookieName) === 'true'
&& $this->passesLaxCookieCheck()) {
return true;
}
return false;
}
/**
* Checks if the lax cookie has been sent with the request if the request
* is including any cookies.
*
* @return bool
* @since 9.1.0
*/
public function passesLaxCookieCheck(): bool {
if (!$this->cookieCheckRequired()) {
return true;
}
$cookieName = $this->getProtectedCookieName('nc_sameSiteCookielax');
if ($this->getCookie($cookieName) === 'true') {
return true;
}
return false;
}
/**
* Returns an ID for the request, value is not guaranteed to be unique and is mostly meant for logging
* If `mod_unique_id` is installed this value will be taken.
* @return string
*/
public function getId(): string {
return $this->requestId->getId();
}
/**
* Checks if given $remoteAddress matches any entry in the given array $trustedProxies.
* For details regarding what "match" means, refer to `matchesTrustedProxy`.
* @return boolean true if $remoteAddress matches any entry in $trustedProxies, false otherwise
*/
protected function isTrustedProxy($trustedProxies, $remoteAddress) {
return IpUtils::checkIp($remoteAddress, $trustedProxies);
}
/**
* Returns the remote address, if the connection came from a trusted proxy
* and `forwarded_for_headers` has been configured then the IP address
* specified in this header will be returned instead.
* Do always use this instead of $_SERVER['REMOTE_ADDR']
* @return string IP address
*/
public function getRemoteAddress(): string {
$remoteAddress = isset($this->server['REMOTE_ADDR']) ? $this->server['REMOTE_ADDR'] : '';
$trustedProxies = $this->config->getSystemValue('trusted_proxies', []);
if (\is_array($trustedProxies) && $this->isTrustedProxy($trustedProxies, $remoteAddress)) {
$forwardedForHeaders = $this->config->getSystemValue('forwarded_for_headers', [
'HTTP_X_FORWARDED_FOR'
// only have one default, so we cannot ship an insecure product out of the box
]);
foreach ($forwardedForHeaders as $header) {
if (isset($this->server[$header])) {
foreach (explode(',', $this->server[$header]) as $IP) {
$IP = trim($IP);
// remove brackets from IPv6 addresses
if (strpos($IP, '[') === 0 && substr($IP, -1) === ']') {
$IP = substr($IP, 1, -1);
}
if (filter_var($IP, FILTER_VALIDATE_IP) !== false) {
return $IP;
}
}
}
}
}
return $remoteAddress;
}
/**
* Check overwrite condition
* @param string $type
* @return bool
*/
private function isOverwriteCondition(string $type = ''): bool {
$regex = '/' . $this->config->getSystemValueString('overwritecondaddr', '') . '/';
$remoteAddr = isset($this->server['REMOTE_ADDR']) ? $this->server['REMOTE_ADDR'] : '';
return $regex === '//' || preg_match($regex, $remoteAddr) === 1
|| $type !== 'protocol';
}
/**
* Returns the server protocol. It respects one or more reverse proxies servers
* and load balancers
* @return string Server protocol (http or https)
*/
public function getServerProtocol(): string {
if ($this->config->getSystemValueString('overwriteprotocol') !== ''
&& $this->isOverwriteCondition('protocol')) {
return $this->config->getSystemValueString('overwriteprotocol');
}
if ($this->fromTrustedProxy() && isset($this->server['HTTP_X_FORWARDED_PROTO'])) {
if (strpos($this->server['HTTP_X_FORWARDED_PROTO'], ',') !== false) {
$parts = explode(',', $this->server['HTTP_X_FORWARDED_PROTO']);
$proto = strtolower(trim($parts[0]));
} else {
$proto = strtolower($this->server['HTTP_X_FORWARDED_PROTO']);
}
// Verify that the protocol is always HTTP or HTTPS
// default to http if an invalid value is provided
return $proto === 'https' ? 'https' : 'http';
}
if (isset($this->server['HTTPS'])
&& $this->server['HTTPS'] !== null
&& $this->server['HTTPS'] !== 'off'
&& $this->server['HTTPS'] !== '') {
return 'https';
}
return 'http';
}
/**
* Returns the used HTTP protocol.
*
* @return string HTTP protocol. HTTP/2, HTTP/1.1 or HTTP/1.0.
*/
public function getHttpProtocol(): string {
$claimedProtocol = $this->server['SERVER_PROTOCOL'];
if (\is_string($claimedProtocol)) {
$claimedProtocol = strtoupper($claimedProtocol);
}
$validProtocols = [
'HTTP/1.0',
'HTTP/1.1',
'HTTP/2',
];
if (\in_array($claimedProtocol, $validProtocols, true)) {
return $claimedProtocol;
}
return 'HTTP/1.1';
}
/**
* Returns the request uri, even if the website uses one or more
* reverse proxies
* @return string
*/
public function getRequestUri(): string {
$uri = isset($this->server['REQUEST_URI']) ? $this->server['REQUEST_URI'] : '';
if ($this->config->getSystemValueString('overwritewebroot') !== '' && $this->isOverwriteCondition()) {
$uri = $this->getScriptName() . substr($uri, \strlen($this->server['SCRIPT_NAME']));
}
return $uri;
}
/**
* Get raw PathInfo from request (not urldecoded)
* @throws \Exception
* @return string Path info
*/
public function getRawPathInfo(): string {
$requestUri = isset($this->server['REQUEST_URI']) ? $this->server['REQUEST_URI'] : '';
// remove too many slashes - can be caused by reverse proxy configuration
$requestUri = preg_replace('%/{2,}%', '/', $requestUri);
// Remove the query string from REQUEST_URI
if ($pos = strpos($requestUri, '?')) {
$requestUri = substr($requestUri, 0, $pos);
}
$scriptName = $this->server['SCRIPT_NAME'];
$pathInfo = $requestUri;
// strip off the script name's dir and file name
// FIXME: Sabre does not really belong here
[$path, $name] = \Sabre\Uri\split($scriptName);
if (!empty($path)) {
if ($path === $pathInfo || strpos($pathInfo, $path.'/') === 0) {
$pathInfo = substr($pathInfo, \strlen($path));
} else {
throw new \Exception("The requested uri($requestUri) cannot be processed by the script '$scriptName')");
}
}
if ($name === null) {
$name = '';
}
if (strpos($pathInfo, '/'.$name) === 0) {
$pathInfo = substr($pathInfo, \strlen($name) + 1);
}
if ($name !== '' && strpos($pathInfo, $name) === 0) {
$pathInfo = substr($pathInfo, \strlen($name));
}
if ($pathInfo === false || $pathInfo === '/') {
return '';
} else {
return $pathInfo;
}
}
/**
* Get PathInfo from request
* @throws \Exception
* @return string|false Path info or false when not found
*/
public function getPathInfo() {
$pathInfo = $this->getRawPathInfo();
return \Sabre\HTTP\decodePath($pathInfo);
}
/**
* Returns the script name, even if the website uses one or more
* reverse proxies
* @return string the script name
*/
public function getScriptName(): string {
$name = $this->server['SCRIPT_NAME'];
$overwriteWebRoot = $this->config->getSystemValueString('overwritewebroot');
if ($overwriteWebRoot !== '' && $this->isOverwriteCondition()) {
// FIXME: This code is untestable due to __DIR__, also that hardcoded path is really dangerous
$serverRoot = str_replace('\\', '/', substr(__DIR__, 0, -\strlen('lib/private/appframework/http/')));
$suburi = str_replace('\\', '/', substr(realpath($this->server['SCRIPT_FILENAME']), \strlen($serverRoot)));
$name = '/' . ltrim($overwriteWebRoot . $suburi, '/');
}
return $name;
}
/**
* Checks whether the user agent matches a given regex
* @param array $agent array of agent names
* @return bool true if at least one of the given agent matches, false otherwise
*/
public function isUserAgent(array $agent): bool {
if (!isset($this->server['HTTP_USER_AGENT'])) {
return false;
}
foreach ($agent as $regex) {
if (preg_match($regex, $this->server['HTTP_USER_AGENT'])) {
return true;
}
}
return false;
}
/**
* Returns the unverified server host from the headers without checking
* whether it is a trusted domain
* @return string Server host
*/
public function getInsecureServerHost(): string {
if ($this->fromTrustedProxy() && $this->getOverwriteHost() !== null) {
return $this->getOverwriteHost();
}
$host = 'localhost';
if ($this->fromTrustedProxy() && isset($this->server['HTTP_X_FORWARDED_HOST'])) {
if (strpos($this->server['HTTP_X_FORWARDED_HOST'], ',') !== false) {
$parts = explode(',', $this->server['HTTP_X_FORWARDED_HOST']);
$host = trim(current($parts));
} else {
$host = $this->server['HTTP_X_FORWARDED_HOST'];
}
} else {
if (isset($this->server['HTTP_HOST'])) {
$host = $this->server['HTTP_HOST'];
} elseif (isset($this->server['SERVER_NAME'])) {
$host = $this->server['SERVER_NAME'];
}
}
return $host;
}
/**
* Returns the server host from the headers, or the first configured
* trusted domain if the host isn't in the trusted list
* @return string Server host
*/
public function getServerHost(): string {
// overwritehost is always trusted
$host = $this->getOverwriteHost();
if ($host !== null) {
return $host;
}
// get the host from the headers
$host = $this->getInsecureServerHost();
// Verify that the host is a trusted domain if the trusted domains
// are defined
// If no trusted domain is provided the first trusted domain is returned
$trustedDomainHelper = new TrustedDomainHelper($this->config);
if ($trustedDomainHelper->isTrustedDomain($host)) {
return $host;
}
$trustedList = (array)$this->config->getSystemValue('trusted_domains', []);
if (count($trustedList) > 0) {
return reset($trustedList);
}
return '';
}
/**
* Returns the overwritehost setting from the config if set and
* if the overwrite condition is met
* @return string|null overwritehost value or null if not defined or the defined condition
* isn't met
*/
private function getOverwriteHost() {
if ($this->config->getSystemValueString('overwritehost') !== '' && $this->isOverwriteCondition()) {
return $this->config->getSystemValueString('overwritehost');
}
return null;
}
private function fromTrustedProxy(): bool {
$remoteAddress = isset($this->server['REMOTE_ADDR']) ? $this->server['REMOTE_ADDR'] : '';
$trustedProxies = $this->config->getSystemValue('trusted_proxies', []);
return \is_array($trustedProxies) && $this->isTrustedProxy($trustedProxies, $remoteAddress);
}
}
|