summaryrefslogtreecommitdiffstats
path: root/includes/Symfony/Component/HttpFoundation/Request.php
blob: e66abb7484ea8d8cb7be8daf77cc25dad97d1573 (plain)
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
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\HttpFoundation;

/**
 * Request represents an HTTP request.
 *
 * @author Fabien Potencier <fabien@symfony.com>
 *
 * @api
 */
class Request
{
    static protected $trustProxy = false;

    /**
     * @var \Symfony\Component\HttpFoundation\ParameterBag
     *
     * @api
     */
    public $attributes;

    /**
     * @var \Symfony\Component\HttpFoundation\ParameterBag
     *
     * @api
     */
    public $request;

    /**
     * @var \Symfony\Component\HttpFoundation\ParameterBag
     *
     * @api
     */
    public $query;

    /**
     * @var \Symfony\Component\HttpFoundation\ServerBag
     *
     * @api
     */
    public $server;

    /**
     * @var \Symfony\Component\HttpFoundation\FileBag
     *
     * @api
     */
    public $files;

    /**
     * @var \Symfony\Component\HttpFoundation\ParameterBag
     *
     * @api
     */
    public $cookies;

    /**
     * @var \Symfony\Component\HttpFoundation\HeaderBag
     *
     * @api
     */
    public $headers;

    protected $content;
    protected $languages;
    protected $charsets;
    protected $acceptableContentTypes;
    protected $pathInfo;
    protected $requestUri;
    protected $baseUrl;
    protected $basePath;
    protected $method;
    protected $format;
    protected $session;

    static protected $formats;

    /**
     * Constructor.
     *
     * @param array  $query      The GET parameters
     * @param array  $request    The POST parameters
     * @param array  $attributes The request attributes (parameters parsed from the PATH_INFO, ...)
     * @param array  $cookies    The COOKIE parameters
     * @param array  $files      The FILES parameters
     * @param array  $server     The SERVER parameters
     * @param string $content    The raw body data
     *
     * @api
     */
    public function __construct(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
    {
        $this->initialize($query, $request, $attributes, $cookies, $files, $server, $content);
    }

    /**
     * Sets the parameters for this request.
     *
     * This method also re-initializes all properties.
     *
     * @param array  $query      The GET parameters
     * @param array  $request    The POST parameters
     * @param array  $attributes The request attributes (parameters parsed from the PATH_INFO, ...)
     * @param array  $cookies    The COOKIE parameters
     * @param array  $files      The FILES parameters
     * @param array  $server     The SERVER parameters
     * @param string $content    The raw body data
     *
     * @api
     */
    public function initialize(array $query = array(), array $request = array(), array $attributes = array(), array $cookies = array(), array $files = array(), array $server = array(), $content = null)
    {
        $this->request = new ParameterBag($request);
        $this->query = new ParameterBag($query);
        $this->attributes = new ParameterBag($attributes);
        $this->cookies = new ParameterBag($cookies);
        $this->files = new FileBag($files);
        $this->server = new ServerBag($server);
        $this->headers = new HeaderBag($this->server->getHeaders());

        $this->content = $content;
        $this->languages = null;
        $this->charsets = null;
        $this->acceptableContentTypes = null;
        $this->pathInfo = null;
        $this->requestUri = null;
        $this->baseUrl = null;
        $this->basePath = null;
        $this->method = null;
        $this->format = null;
    }

    /**
     * Creates a new request with values from PHP's super globals.
     *
     * @return Request A new request
     *
     * @api
     */
    static public function createFromGlobals()
    {
        $request = new static($_GET, $_POST, array(), $_COOKIE, $_FILES, $_SERVER);

        if (0 === strpos($request->server->get('CONTENT_TYPE'), 'application/x-www-form-urlencoded')
            && in_array(strtoupper($request->server->get('REQUEST_METHOD', 'GET')), array('PUT', 'DELETE'))
        ) {
            parse_str($request->getContent(), $data);
            $request->request = new ParameterBag($data);
        }

        return $request;
    }

    /**
     * Creates a Request based on a given URI and configuration.
     *
     * @param string $uri        The URI
     * @param string $method     The HTTP method
     * @param array  $parameters The request (GET) or query (POST) parameters
     * @param array  $cookies    The request cookies ($_COOKIE)
     * @param array  $files      The request files ($_FILES)
     * @param array  $server     The server parameters ($_SERVER)
     * @param string $content    The raw body data
     *
     * @return Request A Request instance
     *
     * @api
     */
    static public function create($uri, $method = 'GET', $parameters = array(), $cookies = array(), $files = array(), $server = array(), $content = null)
    {
        $defaults = array(
            'SERVER_NAME'          => 'localhost',
            'SERVER_PORT'          => 80,
            'HTTP_HOST'            => 'localhost',
            'HTTP_USER_AGENT'      => 'Symfony/2.X',
            'HTTP_ACCEPT'          => 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
            'HTTP_ACCEPT_LANGUAGE' => 'en-us,en;q=0.5',
            'HTTP_ACCEPT_CHARSET'  => 'ISO-8859-1,utf-8;q=0.7,*;q=0.7',
            'REMOTE_ADDR'          => '127.0.0.1',
            'SCRIPT_NAME'          => '',
            'SCRIPT_FILENAME'      => '',
            'SERVER_PROTOCOL'      => 'HTTP/1.1',
            'REQUEST_TIME'         => time(),
        );

        $components = parse_url($uri);
        if (isset($components['host'])) {
            $defaults['SERVER_NAME'] = $components['host'];
            $defaults['HTTP_HOST'] = $components['host'];
        }

        if (isset($components['scheme'])) {
            if ('https' === $components['scheme']) {
                $defaults['HTTPS'] = 'on';
                $defaults['SERVER_PORT'] = 443;
            }
        }

        if (isset($components['port'])) {
            $defaults['SERVER_PORT'] = $components['port'];
            $defaults['HTTP_HOST'] = $defaults['HTTP_HOST'].':'.$components['port'];
        }

        if (!isset($components['path'])) {
            $components['path'] = '';
        }

        if (in_array(strtoupper($method), array('POST', 'PUT', 'DELETE'))) {
            $request = $parameters;
            $query = array();
            $defaults['CONTENT_TYPE'] = 'application/x-www-form-urlencoded';
        } else {
            $request = array();
            $query = $parameters;
            if (false !== $pos = strpos($uri, '?')) {
                $qs = substr($uri, $pos + 1);
                parse_str($qs, $params);

                $query = array_merge($params, $query);
            }
        }

        $queryString = isset($components['query']) ? html_entity_decode($components['query']) : '';
        parse_str($queryString, $qs);
        if (is_array($qs)) {
            $query = array_replace($qs, $query);
        }

        $uri = $components['path'].($queryString ? '?'.$queryString : '');

        $server = array_replace($defaults, $server, array(
            'REQUEST_METHOD'       => strtoupper($method),
            'PATH_INFO'            => '',
            'REQUEST_URI'          => $uri,
            'QUERY_STRING'         => $queryString,
        ));

        return new static($query, $request, array(), $cookies, $files, $server, $content);
    }

    /**
     * Clones a request and overrides some of its parameters.
     *
     * @param array $query      The GET parameters
     * @param array $request    The POST parameters
     * @param array $attributes The request attributes (parameters parsed from the PATH_INFO, ...)
     * @param array $cookies    The COOKIE parameters
     * @param array $files      The FILES parameters
     * @param array $server     The SERVER parameters
     *
     * @api
     */
    public function duplicate(array $query = null, array $request = null, array $attributes = null, array $cookies = null, array $files = null, array $server = null)
    {
        $dup = clone $this;
        if ($query !== null) {
            $dup->query = new ParameterBag($query);
        }
        if ($request !== null) {
            $dup->request = new ParameterBag($request);
        }
        if ($attributes !== null) {
            $dup->attributes = new ParameterBag($attributes);
        }
        if ($cookies !== null) {
            $dup->cookies = new ParameterBag($cookies);
        }
        if ($files !== null) {
            $dup->files = new FileBag($files);
        }
        if ($server !== null) {
            $dup->server = new ServerBag($server);
            $dup->headers = new HeaderBag($dup->server->getHeaders());
        }
        $dup->languages = null;
        $dup->charsets = null;
        $dup->acceptableContentTypes = null;
        $dup->pathInfo = null;
        $dup->requestUri = null;
        $dup->baseUrl = null;
        $dup->basePath = null;
        $dup->method = null;
        $dup->format = null;

        return $dup;
    }

    /**
     * Clones the current request.
     *
     * Note that the session is not cloned as duplicated requests
     * are most of the time sub-requests of the main one.
     */
    public function __clone()
    {
        $this->query      = clone $this->query;
        $this->request    = clone $this->request;
        $this->attributes = clone $this->attributes;
        $this->cookies    = clone $this->cookies;
        $this->files      = clone $this->files;
        $this->server     = clone $this->server;
        $this->headers    = clone $this->headers;
    }

    /**
     * Returns the request as a string.
     *
     * @return string The request
     */
    public function __toString()
    {
        return
            sprintf('%s %s %s', $this->getMethod(), $this->getRequestUri(), $this->server->get('SERVER_PROTOCOL'))."\r\n".
            $this->headers."\r\n".
            $this->getContent();
    }

    /**
     * Overrides the PHP global variables according to this request instance.
     *
     * It overrides $_GET, $_POST, $_REQUEST, $_SERVER, $_COOKIE, and $_FILES.
     *
     * @api
     */
    public function overrideGlobals()
    {
        $_GET = $this->query->all();
        $_POST = $this->request->all();
        $_SERVER = $this->server->all();
        $_COOKIE = $this->cookies->all();
        // FIXME: populate $_FILES

        foreach ($this->headers->all() as $key => $value) {
            $key = strtoupper(str_replace('-', '_', $key));
            if (in_array($key, array('CONTENT_TYPE', 'CONTENT_LENGTH'))) {
                $_SERVER[$key] = implode(', ', $value);
            } else {
                $_SERVER['HTTP_'.$key] = implode(', ', $value);
            }
        }

        // FIXME: should read variables_order and request_order
        // to know which globals to merge and in which order
        $_REQUEST = array_merge($_GET, $_POST);
    }

    /**
     * Trusts $_SERVER entries coming from proxies.
     *
     * You should only call this method if your application
     * is hosted behind a reverse proxy that you manage.
     *
     * @api
     */
    static public function trustProxyData()
    {
        self::$trustProxy = true;
    }

    /**
     * Gets a "parameter" value.
     *
     * This method is mainly useful for libraries that want to provide some flexibility.
     *
     * Order of precedence: GET, PATH, POST, COOKIE
     * Avoid using this method in controllers:
     *  * slow
     *  * prefer to get from a "named" source
     *
     * @param string    $key        the key
     * @param mixed     $default    the default value
     * @param type      $deep       is parameter deep in multidimensional array
     *
     * @return mixed
     */
    public function get($key, $default = null, $deep = false)
    {
        return $this->query->get($key, $this->attributes->get($key, $this->request->get($key, $default, $deep), $deep), $deep);
    }

    /**
     * Gets the Session.
     *
     * @return Session|null The session
     *
     * @api
     */
    public function getSession()
    {
        return $this->session;
    }

    /**
     * Whether the request contains a Session which was started in one of the
     * previous requests.
     *
     * @return boolean
     *
     * @api
     */
    public function hasPreviousSession()
    {
        // the check for $this->session avoids malicious users trying to fake a session cookie with proper name
        return $this->cookies->has(session_name()) && null !== $this->session;
    }

    /**
     * Whether the request contains a Session object.
     *
     * @return boolean
     *
     * @api
     */
    public function hasSession()
    {
        return null !== $this->session;
    }

    /**
     * Sets the Session.
     *
     * @param Session $session The Session
     *
     * @api
     */
    public function setSession(Session $session)
    {
        $this->session = $session;
    }

    /**
     * Returns the client IP address.
     *
     * @param  Boolean $proxy Whether the current request has been made behind a proxy or not
     *
     * @return string The client IP address
     *
     * @api
     */
    public function getClientIp($proxy = false)
    {
        if ($proxy) {
            if ($this->server->has('HTTP_CLIENT_IP')) {
                return $this->server->get('HTTP_CLIENT_IP');
            } elseif (self::$trustProxy && $this->server->has('HTTP_X_FORWARDED_FOR')) {
                return $this->server->get('HTTP_X_FORWARDED_FOR');
            }
        }

        return $this->server->get('REMOTE_ADDR');
    }

    /**
     * Returns current script name.
     *
     * @return string
     *
     * @api
     */
    public function getScriptName()
    {
        return $this->server->get('SCRIPT_NAME', $this->server->get('ORIG_SCRIPT_NAME', ''));
    }

    /**
     * Returns the path being requested relative to the executed script.
     *
     * The path info always starts with a /.
     *
     * Suppose this request is instantiated from /mysite on localhost:
     *
     *  * http://localhost/mysite              returns an empty string
     *  * http://localhost/mysite/about        returns '/about'
     *  * http://localhost/mysite/about?var=1  returns '/about'
     *
     * @return string
     *
     * @api
     */
    public function getPathInfo()
    {
        if (null === $this->pathInfo) {
            $this->pathInfo = $this->preparePathInfo();
        }

        return $this->pathInfo;
    }

    /**
     * Returns the root path from which this request is executed.
     *
     * Suppose that an index.php file instantiates this request object:
     *
     *  * http://localhost/index.php        returns an empty string
     *  * http://localhost/index.php/page   returns an empty string
     *  * http://localhost/web/index.php    return '/web'
     *
     * @return string
     *
     * @api
     */
    public function getBasePath()
    {
        if (null === $this->basePath) {
            $this->basePath = $this->prepareBasePath();
        }

        return $this->basePath;
    }

    /**
     * Returns the root url from which this request is executed.
     *
     * The base URL never ends with a /.
     *
     * This is similar to getBasePath(), except that it also includes the
     * script filename (e.g. index.php) if one exists.
     *
     * @return string
     *
     * @api
     */
    public function getBaseUrl()
    {
        if (null === $this->baseUrl) {
            $this->baseUrl = $this->prepareBaseUrl();
        }

        return $this->baseUrl;
    }

    /**
     * Gets the request's scheme.
     *
     * @return string
     *
     * @api
     */
    public function getScheme()
    {
        return $this->isSecure() ? 'https' : 'http';
    }

    /**
     * Returns the port on which the request is made.
     *
     * @return string
     *
     * @api
     */
    public function getPort()
    {
        return $this->headers->get('X-Forwarded-Port') ?: $this->server->get('SERVER_PORT');
    }

    /**
     * Returns the HTTP host being requested.
     *
     * The port name will be appended to the host if it's non-standard.
     *
     * @return string
     *
     * @api
     */
    public function getHttpHost()
    {
        $scheme = $this->getScheme();
        $port   = $this->getPort();

        if (('http' == $scheme && $port == 80) || ('https' == $scheme && $port == 443)) {
            return $this->getHost();
        }

        return $this->getHost().':'.$port;
    }

    /**
     * Returns the requested URI.
     *
     * @return string
     *
     * @api
     */
    public function getRequestUri()
    {
        if (null === $this->requestUri) {
            $this->requestUri = $this->prepareRequestUri();
        }

        return $this->requestUri;
    }

    /**
     * Generates a normalized URI for the Request.
     *
     * @return string A normalized URI for the Request
     *
     * @see getQueryString()
     *
     * @api
     */
    public function getUri()
    {
        $qs = $this->getQueryString();
        if (null !== $qs) {
            $qs = '?'.$qs;
        }

        return $this->getScheme().'://'.$this->getHttpHost().$this->getBaseUrl().$this->getPathInfo().$qs;
    }

    /**
     * Generates a normalized URI for the given path.
     *
     * @param string $path A path to use instead of the current one
     *
     * @return string The normalized URI for the path
     *
     * @api
     */
    public function getUriForPath($path)
    {
        return $this->getScheme().'://'.$this->getHttpHost().$this->getBaseUrl().$path;
    }

    /**
     * Generates the normalized query string for the Request.
     *
     * It builds a normalized query string, where keys/value pairs are alphabetized
     * and have consistent escaping.
     *
     * @return string A normalized query string for the Request
     *
     * @api
     */
    public function getQueryString()
    {
        if (!$qs = $this->server->get('QUERY_STRING')) {
            return null;
        }

        $parts = array();
        $order = array();

        foreach (explode('&', $qs) as $segment) {
            if (false === strpos($segment, '=')) {
                $parts[] = $segment;
                $order[] = $segment;
            } else {
                $tmp = explode('=', rawurldecode($segment), 2);
                $parts[] = rawurlencode($tmp[0]).'='.rawurlencode($tmp[1]);
                $order[] = $tmp[0];
            }
        }
        array_multisort($order, SORT_ASC, $parts);

        return implode('&', $parts);
    }

    /**
     * Checks whether the request is secure or not.
     *
     * @return Boolean
     *
     * @api
     */
    public function isSecure()
    {
        return (
            (strtolower($this->server->get('HTTPS')) == 'on' || $this->server->get('HTTPS') == 1)
            ||
            (self::$trustProxy && strtolower($this->headers->get('SSL_HTTPS')) == 'on' || $this->headers->get('SSL_HTTPS') == 1)
            ||
            (self::$trustProxy && strtolower($this->headers->get('X_FORWARDED_PROTO')) == 'https')
        );
    }

    /**
     * Returns the host name.
     *
     * @return string
     *
     * @api
     */
    public function getHost()
    {
        if (self::$trustProxy && $host = $this->headers->get('X_FORWARDED_HOST')) {
            $elements = explode(',', $host);

            $host = trim($elements[count($elements) - 1]);
        } else {
            if (!$host = $this->headers->get('HOST')) {
                if (!$host = $this->server->get('SERVER_NAME')) {
                    $host = $this->server->get('SERVER_ADDR', '');
                }
            }
        }

        // Remove port number from host
        $host = preg_replace('/:\d+$/', '', $host);

        return trim($host);
    }

    /**
     * Sets the request method.
     *
     * @param string $method
     *
     * @api
     */
    public function setMethod($method)
    {
        $this->method = null;
        $this->server->set('REQUEST_METHOD', $method);
    }

    /**
     * Gets the request method.
     *
     * The method is always an uppercased string.
     *
     * @return string The request method
     *
     * @api
     */
    public function getMethod()
    {
        if (null === $this->method) {
            $this->method = strtoupper($this->server->get('REQUEST_METHOD', 'GET'));
            if ('POST' === $this->method) {
                $this->method = strtoupper($this->headers->get('X-HTTP-METHOD-OVERRIDE', $this->request->get('_method', 'POST')));
            }
        }

        return $this->method;
    }

    /**
     * Gets the mime type associated with the format.
     *
     * @param  string $format  The format
     *
     * @return string The associated mime type (null if not found)
     *
     * @api
     */
    public function getMimeType($format)
    {
        if (null === static::$formats) {
            static::initializeFormats();
        }

        return isset(static::$formats[$format]) ? static::$formats[$format][0] : null;
    }

    /**
     * Gets the format associated with the mime type.
     *
     * @param  string $mimeType  The associated mime type
     *
     * @return string The format (null if not found)
     *
     * @api
     */
    public function getFormat($mimeType)
    {
        if (false !== $pos = strpos($mimeType, ';')) {
            $mimeType = substr($mimeType, 0, $pos);
        }

        if (null === static::$formats) {
            static::initializeFormats();
        }

        foreach (static::$formats as $format => $mimeTypes) {
            if (in_array($mimeType, (array) $mimeTypes)) {
                return $format;
            }
        }

        return null;
    }

    /**
     * Associates a format with mime types.
     *
     * @param string       $format     The format
     * @param string|array $mimeTypes  The associated mime types (the preferred one must be the first as it will be used as the content type)
     *
     * @api
     */
    public function setFormat($format, $mimeTypes)
    {
        if (null === static::$formats) {
            static::initializeFormats();
        }

        static::$formats[$format] = is_array($mimeTypes) ? $mimeTypes : array($mimeTypes);
    }

    /**
     * Gets the request format.
     *
     * Here is the process to determine the format:
     *
     *  * format defined by the user (with setRequestFormat())
     *  * _format request parameter
     *  * $default
     *
     * @param string  $default     The default format
     *
     * @return string The request format
     *
     * @api
     */
    public function getRequestFormat($default = 'html')
    {
        if (null === $this->format) {
            $this->format = $this->get('_format', $default);
        }

        return $this->format;
    }

    /**
     * Sets the request format.
     *
     * @param string $format The request format.
     *
     * @api
     */
    public function setRequestFormat($format)
    {
        $this->format = $format;
    }

    /**
     * Checks whether the method is safe or not.
     *
     * @return Boolean
     *
     * @api
     */
    public function isMethodSafe()
    {
        return in_array($this->getMethod(), array('GET', 'HEAD'));
    }

    /**
     * Returns the request body content.
     *
     * @param  Boolean $asResource If true, a resource will be returned
     *
     * @return string|resource The request body content or a resource to read the body stream.
     */
    public function getContent($asResource = false)
    {
        if (false === $this->content || (true === $asResource && null !== $this->content)) {
            throw new \LogicException('getContent() can only be called once when using the resource return type.');
        }

        if (true === $asResource) {
            $this->content = false;

            return fopen('php://input', 'rb');
        }

        if (null === $this->content) {
            $this->content = file_get_contents('php://input');
        }

        return $this->content;
    }

    /**
     * Gets the Etags.
     *
     * @return array The entity tags
     */
    public function getETags()
    {
        return preg_split('/\s*,\s*/', $this->headers->get('if_none_match'), null, PREG_SPLIT_NO_EMPTY);
    }

    public function isNoCache()
    {
        return $this->headers->hasCacheControlDirective('no-cache') || 'no-cache' == $this->headers->get('Pragma');
    }

    /**
     * Returns the preferred language.
     *
     * @param  array  $locales  An array of ordered available locales
     *
     * @return string The preferred locale
     *
     * @api
     */
    public function getPreferredLanguage(array $locales = null)
    {
        $preferredLanguages = $this->getLanguages();

        if (null === $locales) {
            return isset($preferredLanguages[0]) ? $preferredLanguages[0] : null;
        }

        if (!$preferredLanguages) {
            return $locales[0];
        }

        $preferredLanguages = array_values(array_intersect($preferredLanguages, $locales));

        return isset($preferredLanguages[0]) ? $preferredLanguages[0] : $locales[0];
    }

    /**
     * Gets a list of languages acceptable by the client browser.
     *
     * @return array Languages ordered in the user browser preferences
     *
     * @api
     */
    public function getLanguages()
    {
        if (null !== $this->languages) {
            return $this->languages;
        }

        $languages = $this->splitHttpAcceptHeader($this->headers->get('Accept-Language'));
        $this->languages = array();
        foreach ($languages as $lang => $q) {
            if (strstr($lang, '-')) {
                $codes = explode('-', $lang);
                if ($codes[0] == 'i') {
                    // Language not listed in ISO 639 that are not variants
                    // of any listed language, which can be registered with the
                    // i-prefix, such as i-cherokee
                    if (count($codes) > 1) {
                        $lang = $codes[1];
                    }
                } else {
                    for ($i = 0, $max = count($codes); $i < $max; $i++) {
                        if ($i == 0) {
                            $lang = strtolower($codes[0]);
                        } else {
                            $lang .= '_'.strtoupper($codes[$i]);
                        }
                    }
                }
            }

            $this->languages[] = $lang;
        }

        return $this->languages;
    }

    /**
     * Gets a list of charsets acceptable by the client browser.
     *
     * @return array List of charsets in preferable order
     *
     * @api
     */
    public function getCharsets()
    {
        if (null !== $this->charsets) {
            return $this->charsets;
        }

        return $this->charsets = array_keys($this->splitHttpAcceptHeader($this->headers->get('Accept-Charset')));
    }

    /**
     * Gets a list of content types acceptable by the client browser
     *
     * @return array List of content types in preferable order
     *
     * @api
     */
    public function getAcceptableContentTypes()
    {
        if (null !== $this->acceptableContentTypes) {
            return $this->acceptableContentTypes;
        }

        return $this->acceptableContentTypes = array_keys($this->splitHttpAcceptHeader($this->headers->get('Accept')));
    }

    /**
     * Returns true if the request is a XMLHttpRequest.
     *
     * It works if your JavaScript library set an X-Requested-With HTTP header.
     * It is known to work with Prototype, Mootools, jQuery.
     *
     * @return Boolean true if the request is an XMLHttpRequest, false otherwise
     *
     * @api
     */
    public function isXmlHttpRequest()
    {
        return 'XMLHttpRequest' == $this->headers->get('X-Requested-With');
    }

    /**
     * Splits an Accept-* HTTP header.
     *
     * @param string $header  Header to split
     */
    public function splitHttpAcceptHeader($header)
    {
        if (!$header) {
            return array();
        }

        $values = array();
        foreach (array_filter(explode(',', $header)) as $value) {
            // Cut off any q-value that might come after a semi-colon
            if ($pos = strpos($value, ';')) {
                $q     = (float) trim(substr($value, strpos($value, '=') + 1));
                $value = trim(substr($value, 0, $pos));
            } else {
                $q = 1;
            }

            if (0 < $q) {
                $values[trim($value)] = $q;
            }
        }

        arsort($values);
        reset($values);

        return $values;
    }

    /*
     * The following methods are derived from code of the Zend Framework (1.10dev - 2010-01-24)
     *
     * Code subject to the new BSD license (http://framework.zend.com/license/new-bsd).
     *
     * Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
     */

    protected function prepareRequestUri()
    {
        $requestUri = '';

        if ($this->headers->has('X_REWRITE_URL')) {
            // check this first so IIS will catch
            $requestUri = $this->headers->get('X_REWRITE_URL');
        } elseif ($this->server->get('IIS_WasUrlRewritten') == '1' && $this->server->get('UNENCODED_URL') != '') {
            // IIS7 with URL Rewrite: make sure we get the unencoded url (double slash problem)
            $requestUri = $this->server->get('UNENCODED_URL');
        } elseif ($this->server->has('REQUEST_URI')) {
            $requestUri = $this->server->get('REQUEST_URI');
            // HTTP proxy reqs setup request uri with scheme and host [and port] + the url path, only use url path
            $schemeAndHttpHost = $this->getScheme().'://'.$this->getHttpHost();
            if (strpos($requestUri, $schemeAndHttpHost) === 0) {
                $requestUri = substr($requestUri, strlen($schemeAndHttpHost));
            }
        } elseif ($this->server->has('ORIG_PATH_INFO')) {
            // IIS 5.0, PHP as CGI
            $requestUri = $this->server->get('ORIG_PATH_INFO');
            if ($this->server->get('QUERY_STRING')) {
                $requestUri .= '?'.$this->server->get('QUERY_STRING');
            }
        }

        return $requestUri;
    }

    protected function prepareBaseUrl()
    {
        $filename = basename($this->server->get('SCRIPT_FILENAME'));

        if (basename($this->server->get('SCRIPT_NAME')) === $filename) {
            $baseUrl = $this->server->get('SCRIPT_NAME');
        } elseif (basename($this->server->get('PHP_SELF')) === $filename) {
            $baseUrl = $this->server->get('PHP_SELF');
        } elseif (basename($this->server->get('ORIG_SCRIPT_NAME')) === $filename) {
            $baseUrl = $this->server->get('ORIG_SCRIPT_NAME'); // 1and1 shared hosting compatibility
        } else {
            // Backtrack up the script_filename to find the portion matching
            // php_self
            $path    = $this->server->get('PHP_SELF', '');
            $file    = $this->server->get('SCRIPT_FILENAME', '');
            $segs    = explode('/', trim($file, '/'));
            $segs    = array_reverse($segs);
            $index   = 0;
            $last    = count($segs);
            $baseUrl = '';
            do {
                $seg     = $segs[$index];
                $baseUrl = '/'.$seg.$baseUrl;
                ++$index;
            } while (($last > $index) && (false !== ($pos = strpos($path, $baseUrl))) && (0 != $pos));
        }

        // Does the baseUrl have anything in common with the request_uri?
        $requestUri = $this->getRequestUri();

        if ($baseUrl && 0 === strpos($requestUri, $baseUrl)) {
            // full $baseUrl matches
            return $baseUrl;
        }

        if ($baseUrl && 0 === strpos($requestUri, dirname($baseUrl))) {
            // directory portion of $baseUrl matches
            return rtrim(dirname($baseUrl), '/');
        }

        $truncatedRequestUri = $requestUri;
        if (($pos = strpos($requestUri, '?')) !== false) {
            $truncatedRequestUri = substr($requestUri, 0, $pos);
        }

        $basename = basename($baseUrl);
        if (empty($basename) || !strpos($truncatedRequestUri, $basename)) {
            // no match whatsoever; set it blank
            return '';
        }

        // If using mod_rewrite or ISAPI_Rewrite strip the script filename
        // out of baseUrl. $pos !== 0 makes sure it is not matching a value
        // from PATH_INFO or QUERY_STRING
        if ((strlen($requestUri) >= strlen($baseUrl)) && ((false !== ($pos = strpos($requestUri, $baseUrl))) && ($pos !== 0))) {
            $baseUrl = substr($requestUri, 0, $pos + strlen($baseUrl));
        }

        return rtrim($baseUrl, '/');
    }

    /**
     * Prepares base path.
     *
     * @return string base path
     */
    protected function prepareBasePath()
    {
        $filename = basename($this->server->get('SCRIPT_FILENAME'));
        $baseUrl = $this->getBaseUrl();
        if (empty($baseUrl)) {
            return '';
        }

        if (basename($baseUrl) === $filename) {
            $basePath = dirname($baseUrl);
        } else {
            $basePath = $baseUrl;
        }

        if ('\\' === DIRECTORY_SEPARATOR) {
            $basePath = str_replace('\\', '/', $basePath);
        }

        return rtrim($basePath, '/');
    }

    /**
     * Prepares path info.
     *
     * @return string path info
     */
    protected function preparePathInfo()
    {
        $baseUrl = $this->getBaseUrl();

        if (null === ($requestUri = $this->getRequestUri())) {
            return '/';
        }

        $pathInfo = '/';

        // Remove the query string from REQUEST_URI
        if ($pos = strpos($requestUri, '?')) {
            $requestUri = substr($requestUri, 0, $pos);
        }

        if ((null !== $baseUrl) && (false === ($pathInfo = substr(urldecode($requestUri), strlen(urldecode($baseUrl)))))) {
            // If substr() returns false then PATH_INFO is set to an empty string
            return '/';
        } elseif (null === $baseUrl) {
            return $requestUri;
        }

        return (string) $pathInfo;
    }

    /**
     * Initializes HTTP request formats.
     */
    static protected function initializeFormats()
    {
        static::$formats = array(
            'html' => array('text/html', 'application/xhtml+xml'),
            'txt'  => array('text/plain'),
            'js'   => array('application/javascript', 'application/x-javascript', 'text/javascript'),
            'css'  => array('text/css'),
            'json' => array('application/json', 'application/x-json'),
            'xml'  => array('text/xml', 'application/xml', 'application/x-xml'),
            'rdf'  => array('application/rdf+xml'),
            'atom' => array('application/atom+xml'),
        );
    }
}