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
|
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qnetworkaccessmanager.h"
#include "qnetworkaccessmanager_p.h"
#include "qnetworkrequest.h"
#include "qnetworkreply.h"
#include "qnetworkreply_p.h"
#include "qnetworkcookie.h"
#include "qabstractnetworkcache.h"
#include "qnetworkaccesshttpbackend_p.h"
#include "qnetworkaccessftpbackend_p.h"
#include "qnetworkaccessfilebackend_p.h"
#include "qnetworkaccessdatabackend_p.h"
#include "qnetworkaccessdebugpipebackend_p.h"
#include "qfilenetworkreply_p.h"
#include "QtCore/qbuffer.h"
#include "QtCore/qurl.h"
#include "QtCore/qvector.h"
#include "QtNetwork/qauthenticator.h"
#include "QtNetwork/qsslconfiguration.h"
QT_BEGIN_NAMESPACE
#ifndef QT_NO_HTTP
Q_GLOBAL_STATIC(QNetworkAccessHttpBackendFactory, httpBackend)
#endif // QT_NO_HTTP
Q_GLOBAL_STATIC(QNetworkAccessFileBackendFactory, fileBackend)
Q_GLOBAL_STATIC(QNetworkAccessDataBackendFactory, dataBackend)
#ifndef QT_NO_FTP
Q_GLOBAL_STATIC(QNetworkAccessFtpBackendFactory, ftpBackend)
#endif // QT_NO_FTP
#ifdef QT_BUILD_INTERNAL
Q_GLOBAL_STATIC(QNetworkAccessDebugPipeBackendFactory, debugpipeBackend)
#endif
static void ensureInitialized()
{
#ifndef QT_NO_HTTP
(void) httpBackend();
#endif // QT_NO_HTTP
(void) dataBackend();
#ifndef QT_NO_FTP
(void) ftpBackend();
#endif
#ifdef QT_BUILD_INTERNAL
(void) debugpipeBackend();
#endif
// leave this one last since it will query the special QAbstractFileEngines
(void) fileBackend();
}
/*!
\class QNetworkAccessManager
\brief The QNetworkAccessManager class allows the application to
send network requests and receive replies
\since 4.4
\ingroup network
\inmodule QtNetwork
\reentrant
The Network Access API is constructed around one QNetworkAccessManager
object, which holds the common configuration and settings for the requests
it sends. It contains the proxy and cache configuration, as well as the
signals related to such issues, and reply signals that can be used to
monitor the progress of a network operation.
Once a QNetworkAccessManager object has been created, the application can
use it to send requests over the network. A group of standard functions
are supplied that take a request and optional data, and each return a
QNetworkReply object. The returned object is used to obtain any data
returned in response to the corresponding request.
A simple download off the network could be accomplished with:
\snippet doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp 0
When the \tt replyFinished slot above is called, the parameter it
takes is the QNetworkReply object containing the downloaded data
as well as meta-data (headers, etc.).
\note After the request has finished, it is the responsibility of the user
to delete the QNetworkReply object at an appropriate time. Do not directly
delete it inside the slot connected to finished(). You can use the
deleteLater() function.
A more involved example, assuming the manager is already existent,
can be:
\snippet doc/src/snippets/code/src_network_access_qnetworkaccessmanager.cpp 1
\sa QNetworkRequest, QNetworkReply, QNetworkProxy
*/
/*!
\enum QNetworkAccessManager::Operation
Indicates the operation this reply is processing.
\value HeadOperation retrieve headers operation (created
with head())
\value GetOperation retrieve headers and download contents
(created with get())
\value PutOperation upload contents operation (created
with put())
\value PostOperation send the contents of an HTML form for
processing via HTTP POST (created with post())
\value DeleteOperation delete contents operation (created with
deleteResource())
\omitvalue UnknownOperation
\sa QNetworkReply::operation()
*/
/*!
\fn void QNetworkAccessManager::proxyAuthenticationRequired(const QNetworkProxy &proxy, QAuthenticator *authenticator)
This signal is emitted whenever a proxy requests authentication
and QNetworkAccessManager cannot find a valid, cached
credential. The slot connected to this signal should fill in the
credentials for the proxy \a proxy in the \a authenticator object.
QNetworkAccessManager will cache the credentials internally. The
next time the proxy requests authentication, QNetworkAccessManager
will automatically send the same credential without emitting the
proxyAuthenticationRequired signal again.
If the proxy rejects the credentials, QNetworkAccessManager will
emit the signal again.
\sa proxy(), setProxy(), authenticationRequired()
*/
/*!
\fn void QNetworkAccessManager::authenticationRequired(QNetworkReply *reply, QAuthenticator *authenticator)
This signal is emitted whenever a final server requests
authentication before it delivers the requested contents. The slot
connected to this signal should fill the credentials for the
contents (which can be determined by inspecting the \a reply
object) in the \a authenticator object.
QNetworkAccessManager will cache the credentials internally and
will send the same values if the server requires authentication
again, without emitting the authenticationRequired() signal. If it
rejects the credentials, this signal will be emitted again.
\sa proxyAuthenticationRequired()
*/
/*!
\fn void QNetworkAccessManager::finished(QNetworkReply *reply)
This signal is emitted whenever a pending network reply is
finished. The \a reply parameter will contain a pointer to the
reply that has just finished. This signal is emitted in tandem
with the QNetworkReply::finished() signal.
See QNetworkReply::finished() for information on the status that
the object will be in.
\note Do not delete the \a reply object in the slot connected to this
signal. Use deleteLater().
\sa QNetworkReply::finished(), QNetworkReply::error()
*/
/*!
\fn void QNetworkAccessManager::sslErrors(QNetworkReply *reply, const QList<QSslError> &errors)
This signal is emitted if the SSL/TLS session encountered errors
during the set up, including certificate verification errors. The
\a errors parameter contains the list of errors and \a reply is
the QNetworkReply that is encountering these errors.
To indicate that the errors are not fatal and that the connection
should proceed, the QNetworkReply::ignoreSslErrors() function should be called
from the slot connected to this signal. If it is not called, the
SSL session will be torn down before any data is exchanged
(including the URL).
This signal can be used to display an error message to the user
indicating that security may be compromised and display the
SSL settings (see sslConfiguration() to obtain it). If the user
decides to proceed after analyzing the remote certificate, the
slot should call ignoreSslErrors().
\sa QSslSocket::sslErrors(), QNetworkReply::sslErrors(),
QNetworkReply::sslConfiguration(), QNetworkReply::ignoreSslErrors()
*/
class QNetworkAuthenticationCredential
{
public:
QString domain;
QString user;
QString password;
};
Q_DECLARE_TYPEINFO(QNetworkAuthenticationCredential, Q_MOVABLE_TYPE);
inline bool operator<(const QNetworkAuthenticationCredential &t1, const QString &t2)
{ return t1.domain < t2; }
class QNetworkAuthenticationCache: private QVector<QNetworkAuthenticationCredential>,
public QNetworkAccessCache::CacheableObject
{
public:
QNetworkAuthenticationCache()
{
setExpires(false);
setShareable(true);
reserve(1);
}
QNetworkAuthenticationCredential *findClosestMatch(const QString &domain)
{
iterator it = qLowerBound(begin(), end(), domain);
if (it == end() && !isEmpty())
--it;
if (it == end() || !domain.startsWith(it->domain))
return 0;
return &*it;
}
void insert(const QString &domain, const QString &user, const QString &password)
{
QNetworkAuthenticationCredential *closestMatch = findClosestMatch(domain);
if (closestMatch && closestMatch->domain == domain) {
// we're overriding the current credentials
closestMatch->user = user;
closestMatch->password = password;
} else {
QNetworkAuthenticationCredential newCredential;
newCredential.domain = domain;
newCredential.user = user;
newCredential.password = password;
if (closestMatch)
QVector<QNetworkAuthenticationCredential>::insert(++closestMatch, newCredential);
else
QVector<QNetworkAuthenticationCredential>::insert(end(), newCredential);
}
}
virtual void dispose() { delete this; }
};
#ifndef QT_NO_NETWORKPROXY
static QByteArray proxyAuthenticationKey(const QNetworkProxy &proxy, const QString &realm)
{
QUrl key;
switch (proxy.type()) {
case QNetworkProxy::Socks5Proxy:
key.setScheme(QLatin1String("proxy-socks5"));
break;
case QNetworkProxy::HttpProxy:
case QNetworkProxy::HttpCachingProxy:
key.setScheme(QLatin1String("proxy-http"));
break;
case QNetworkProxy::FtpCachingProxy:
key.setScheme(QLatin1String("proxy-ftp"));
break;
case QNetworkProxy::DefaultProxy:
case QNetworkProxy::NoProxy:
// shouldn't happen
return QByteArray();
// no default:
// let there be errors if a new proxy type is added in the future
}
if (key.scheme().isEmpty())
// proxy type not handled
return QByteArray();
key.setUserName(proxy.user());
key.setHost(proxy.hostName());
key.setPort(proxy.port());
key.setFragment(realm);
return "auth:" + key.toEncoded();
}
#endif
static inline QByteArray authenticationKey(const QUrl &url, const QString &realm)
{
QUrl copy = url;
copy.setFragment(realm);
return "auth:" + copy.toEncoded(QUrl::RemovePassword | QUrl::RemovePath | QUrl::RemoveQuery);
}
/*!
Constructs a QNetworkAccessManager object that is the center of
the Network Access API and sets \a parent as the parent object.
*/
QNetworkAccessManager::QNetworkAccessManager(QObject *parent)
: QObject(*new QNetworkAccessManagerPrivate, parent)
{
ensureInitialized();
}
/*!
Destroys the QNetworkAccessManager object and frees up any
resources. Note that QNetworkReply objects that are returned from
this class have this object set as their parents, which means that
they will be deleted along with it if you don't call
QObject::setParent() on them.
*/
QNetworkAccessManager::~QNetworkAccessManager()
{
#ifndef QT_NO_NETWORKPROXY
delete d_func()->proxyFactory;
#endif
}
#ifndef QT_NO_NETWORKPROXY
/*!
Returns the QNetworkProxy that the requests sent using this
QNetworkAccessManager object will use. The default value for the
proxy is QNetworkProxy::DefaultProxy.
\sa setProxy(), setProxyFactory(), proxyAuthenticationRequired()
*/
QNetworkProxy QNetworkAccessManager::proxy() const
{
return d_func()->proxy;
}
/*!
Sets the proxy to be used in future requests to be \a proxy. This
does not affect requests that have already been sent. The
proxyAuthenticationRequired() signal will be emitted if the proxy
requests authentication.
A proxy set with this function will be used for all requests
issued by QNetworkAccessManager. In some cases, it might be
necessary to select different proxies depending on the type of
request being sent or the destination host. If that's the case,
you should consider using setProxyFactory().
\sa proxy(), proxyAuthenticationRequired()
*/
void QNetworkAccessManager::setProxy(const QNetworkProxy &proxy)
{
Q_D(QNetworkAccessManager);
delete d->proxyFactory;
d->proxy = proxy;
d->proxyFactory = 0;
}
/*!
\fn QNetworkProxyFactory *QNetworkAccessManager::proxyFactory() const
\since 4.5
Returns the proxy factory that this QNetworkAccessManager object
is using to determine the proxies to be used for requests.
Note that the pointer returned by this function is managed by
QNetworkAccessManager and could be deleted at any time.
\sa setProxyFactory(), proxy()
*/
QNetworkProxyFactory *QNetworkAccessManager::proxyFactory() const
{
return d_func()->proxyFactory;
}
/*!
\since 4.5
Sets the proxy factory for this class to be \a factory. A proxy
factory is used to determine a more specific list of proxies to be
used for a given request, instead of trying to use the same proxy
value for all requests.
All queries sent by QNetworkAccessManager will have type
QNetworkProxyQuery::UrlRequest.
For example, a proxy factory could apply the following rules:
\list
\o if the target address is in the local network (for example,
if the hostname contains no dots or if it's an IP address in
the organization's range), return QNetworkProxy::NoProxy
\o if the request is FTP, return an FTP proxy
\o if the request is HTTP or HTTPS, then return an HTTP proxy
\o otherwise, return a SOCKSv5 proxy server
\endlist
The lifetime of the object \a factory will be managed by
QNetworkAccessManager. It will delete the object when necessary.
\note If a specific proxy is set with setProxy(), the factory will not
be used.
\sa proxyFactory(), setProxy(), QNetworkProxyQuery
*/
void QNetworkAccessManager::setProxyFactory(QNetworkProxyFactory *factory)
{
Q_D(QNetworkAccessManager);
delete d->proxyFactory;
d->proxyFactory = factory;
d->proxy = QNetworkProxy();
}
#endif
/*!
\since 4.5
Returns the cache that is used to store data obtained from the network.
\sa setCache()
*/
QAbstractNetworkCache *QNetworkAccessManager::cache() const
{
Q_D(const QNetworkAccessManager);
return d->networkCache;
}
/*!
\since 4.5
Sets the manager's network cache to be the \a cache specified. The cache
is used for all requests dispatched by the manager.
Use this function to set the network cache object to a class that implements
additional features, like saving the cookies to permanent storage.
\note QNetworkAccessManager takes ownership of the \a cache object.
QNetworkAccessManager by default does not have a set cache.
Qt provides a simple disk cache, QNetworkDiskCache, which can be used.
\sa cache(), QNetworkRequest::CacheLoadControl
*/
void QNetworkAccessManager::setCache(QAbstractNetworkCache *cache)
{
Q_D(QNetworkAccessManager);
if (d->networkCache != cache) {
delete d->networkCache;
d->networkCache = cache;
if (d->networkCache)
d->networkCache->setParent(this);
}
}
/*!
Returns the QNetworkCookieJar that is used to store cookies
obtained from the network as well as cookies that are about to be
sent.
\sa setCookieJar()
*/
QNetworkCookieJar *QNetworkAccessManager::cookieJar() const
{
Q_D(const QNetworkAccessManager);
if (!d->cookieJar)
d->createCookieJar();
return d->cookieJar;
}
/*!
Sets the manager's cookie jar to be the \a cookieJar specified.
The cookie jar is used by all requests dispatched by the manager.
Use this function to set the cookie jar object to a class that
implements additional features, like saving the cookies to permanent
storage.
\note QNetworkAccessManager takes ownership of the \a cookieJar object.
QNetworkAccessManager will set the parent of the \a cookieJar
passed to itself, so that the cookie jar is deleted when this
object is deleted as well. If you want to share cookie jars
between different QNetworkAccessManager objects, you may want to
set the cookie jar's parent to 0 after calling this function.
QNetworkAccessManager by default does not implement any cookie
policy of its own: it accepts all cookies sent by the server, as
long as they are well formed and meet the minimum security
requirements (cookie domain matches the request's and cookie path
matches the request's). In order to implement your own security
policy, override the QNetworkCookieJar::cookiesForUrl() and
QNetworkCookieJar::setCookiesFromUrl() virtual functions. Those
functions are called by QNetworkAccessManager when it detects a
new cookie.
\sa cookieJar(), QNetworkCookieJar::cookiesForUrl(), QNetworkCookieJar::setCookiesFromUrl()
*/
void QNetworkAccessManager::setCookieJar(QNetworkCookieJar *cookieJar)
{
Q_D(QNetworkAccessManager);
d->cookieJarCreated = true;
if (d->cookieJar != cookieJar) {
if (d->cookieJar && d->cookieJar->parent() == this)
delete d->cookieJar;
d->cookieJar = cookieJar;
d->cookieJar->setParent(this);
}
}
/*!
Posts a request to obtain the network headers for \a request
and returns a new QNetworkReply object which will contain such headers.
The function is named after the HTTP request associated (HEAD).
*/
QNetworkReply *QNetworkAccessManager::head(const QNetworkRequest &request)
{
return d_func()->postProcess(createRequest(QNetworkAccessManager::HeadOperation, request));
}
/*!
Posts a request to obtain the contents of the target \a request
and returns a new QNetworkReply object opened for reading which emits the
\l{QIODevice::readyRead()}{readyRead()} signal whenever new data
arrives.
The contents as well as associated headers will be downloaded.
\sa post(), put(), deleteResource()
*/
QNetworkReply *QNetworkAccessManager::get(const QNetworkRequest &request)
{
return d_func()->postProcess(createRequest(QNetworkAccessManager::GetOperation, request));
}
/*!
Sends an HTTP POST request to the destination specified by \a request
and returns a new QNetworkReply object opened for reading that will
contain the reply sent by the server. The contents of the \a data
device will be uploaded to the server.
\a data must be open for reading and must remain valid until the
finished() signal is emitted for this reply.
\note Sending a POST request on protocols other than HTTP and
HTTPS is undefined and will probably fail.
\sa get(), put(), deleteResource()
*/
QNetworkReply *QNetworkAccessManager::post(const QNetworkRequest &request, QIODevice *data)
{
return d_func()->postProcess(createRequest(QNetworkAccessManager::PostOperation, request, data));
}
/*!
\overload
Sends the contents of the \a data byte array to the destination
specified by \a request.
*/
QNetworkReply *QNetworkAccessManager::post(const QNetworkRequest &request, const QByteArray &data)
{
QBuffer *buffer = new QBuffer;
buffer->setData(data);
buffer->open(QIODevice::ReadOnly);
QNetworkReply *reply = post(request, buffer);
buffer->setParent(reply);
return reply;
}
/*!
Uploads the contents of \a data to the destination \a request and
returnes a new QNetworkReply object that will be open for reply.
\a data must be opened for reading when this function is called
and must remain valid until the finished() signal is emitted for
this reply.
Whether anything will be available for reading from the returned
object is protocol dependent. For HTTP, the server may send a
small HTML page indicating the upload was successful (or not).
Other protocols will probably have content in their replies.
\note For HTTP, this request will send a PUT request, which most servers
do not allow. Form upload mechanisms, including that of uploading
files through HTML forms, use the POST mechanism.
\sa get(), post()
*/
QNetworkReply *QNetworkAccessManager::put(const QNetworkRequest &request, QIODevice *data)
{
return d_func()->postProcess(createRequest(QNetworkAccessManager::PutOperation, request, data));
}
/*!
\overload
Sends the contents of the \a data byte array to the destination
specified by \a request.
*/
QNetworkReply *QNetworkAccessManager::put(const QNetworkRequest &request, const QByteArray &data)
{
QBuffer *buffer = new QBuffer;
buffer->setData(data);
buffer->open(QIODevice::ReadOnly);
QNetworkReply *reply = put(request, buffer);
buffer->setParent(reply);
return reply;
}
/*!
\since 4.6
Sends a request to delete the resource identified by the URL of \a request.
\note This feature is currently available for HTTP only, performing an
HTTP DELETE request.
\sa get(), post(), put()
*/
QNetworkReply *QNetworkAccessManager::deleteResource(const QNetworkRequest &request)
{
return d_func()->postProcess(createRequest(QNetworkAccessManager::DeleteOperation, request));
}
/*!
Returns a new QNetworkReply object to handle the operation \a op
and request \a req. The device \a outgoingData is always 0 for Get and
Head requests, but is the value passed to post() and put() in
those operations (the QByteArray variants will pass a QBuffer
object).
The default implementation calls QNetworkCookieJar::cookiesForUrl()
on the cookie jar set with setCookieJar() to obtain the cookies to
be sent to the remote server.
The returned object must be in an open state.
*/
QNetworkReply *QNetworkAccessManager::createRequest(QNetworkAccessManager::Operation op,
const QNetworkRequest &req,
QIODevice *outgoingData)
{
Q_D(QNetworkAccessManager);
// fast path for GET on file:// URLs
// Also if the scheme is empty we consider it a file.
// The QNetworkAccessFileBackend will right now only be used
// for PUT or qrc://
if ((op == QNetworkAccessManager::GetOperation || op == QNetworkAccessManager::HeadOperation)
&& (req.url().scheme() == QLatin1String("file")
|| req.url().scheme().isEmpty())) {
return new QFileNetworkReply(this, req, op);
}
QNetworkRequest request = req;
if (!request.header(QNetworkRequest::ContentLengthHeader).isValid() &&
outgoingData && !outgoingData->isSequential()) {
// request has no Content-Length
// but the data that is outgoing is random-access
request.setHeader(QNetworkRequest::ContentLengthHeader, outgoingData->size());
}
if (d->cookieJar) {
QList<QNetworkCookie> cookies = d->cookieJar->cookiesForUrl(request.url());
if (!cookies.isEmpty())
request.setHeader(QNetworkRequest::CookieHeader, qVariantFromValue(cookies));
}
// first step: create the reply
QUrl url = request.url();
QNetworkReplyImpl *reply = new QNetworkReplyImpl(this);
QNetworkReplyImplPrivate *priv = reply->d_func();
priv->manager = this;
// second step: fetch cached credentials
QNetworkAuthenticationCredential *cred = d->fetchCachedCredentials(url);
if (cred) {
url.setUserName(cred->user);
url.setPassword(cred->password);
priv->urlForLastAuthentication = url;
}
// third step: find a backend
priv->backend = d->findBackend(op, request);
#ifndef QT_NO_NETWORKPROXY
QList<QNetworkProxy> proxyList = d->queryProxy(QNetworkProxyQuery(request.url()));
priv->proxyList = proxyList;
#endif
if (priv->backend) {
priv->backend->setParent(reply);
priv->backend->reply = priv;
}
// fourth step: setup the reply
priv->setup(op, request, outgoingData);
#ifndef QT_NO_OPENSSL
reply->setSslConfiguration(request.sslConfiguration());
#endif
return reply;
}
void QNetworkAccessManagerPrivate::_q_replyFinished()
{
Q_Q(QNetworkAccessManager);
QNetworkReply *reply = qobject_cast<QNetworkReply *>(q->sender());
if (reply)
emit q->finished(reply);
}
void QNetworkAccessManagerPrivate::_q_replySslErrors(const QList<QSslError> &errors)
{
#ifndef QT_NO_OPENSSL
Q_Q(QNetworkAccessManager);
QNetworkReply *reply = qobject_cast<QNetworkReply *>(q->sender());
if (reply)
emit q->sslErrors(reply, errors);
#else
Q_UNUSED(errors);
#endif
}
QNetworkReply *QNetworkAccessManagerPrivate::postProcess(QNetworkReply *reply)
{
Q_Q(QNetworkAccessManager);
QNetworkReplyPrivate::setManager(reply, q);
q->connect(reply, SIGNAL(finished()), SLOT(_q_replyFinished()));
#ifndef QT_NO_OPENSSL
/* In case we're compiled without SSL support, we don't have this signal and we need to
* avoid getting a connection error. */
q->connect(reply, SIGNAL(sslErrors(QList<QSslError>)), SLOT(_q_replySslErrors(QList<QSslError>)));
#endif
return reply;
}
void QNetworkAccessManagerPrivate::createCookieJar() const
{
if (!cookieJarCreated) {
// keep the ugly hack in here
QNetworkAccessManagerPrivate *that = const_cast<QNetworkAccessManagerPrivate *>(this);
that->cookieJar = new QNetworkCookieJar(that->q_func());
that->cookieJarCreated = true;
}
}
void QNetworkAccessManagerPrivate::authenticationRequired(QNetworkAccessBackend *backend,
QAuthenticator *authenticator)
{
Q_Q(QNetworkAccessManager);
// FIXME: Add support for domains (i.e., the leading path)
QUrl url = backend->reply->url;
// don't try the cache for the same URL twice in a row
// being called twice for the same URL means the authentication failed
if (url != backend->reply->urlForLastAuthentication) {
QNetworkAuthenticationCredential *cred = fetchCachedCredentials(url, authenticator);
if (cred) {
authenticator->setUser(cred->user);
authenticator->setPassword(cred->password);
backend->reply->urlForLastAuthentication = url;
return;
}
}
backend->reply->urlForLastAuthentication = url;
emit q->authenticationRequired(backend->reply->q_func(), authenticator);
addCredentials(url, authenticator);
}
#ifndef QT_NO_NETWORKPROXY
void QNetworkAccessManagerPrivate::proxyAuthenticationRequired(QNetworkAccessBackend *backend,
const QNetworkProxy &proxy,
QAuthenticator *authenticator)
{
Q_Q(QNetworkAccessManager);
// ### FIXME Tracking of successful authentications
// This code is a bit broken right now for SOCKS authentication
// first request: proxyAuthenticationRequired gets emitted, credentials gets saved
// second request: (proxy != backend->reply->lastProxyAuthentication) does not evaluate to true,
// proxyAuthenticationRequired gets emitted again
// possible solution: some tracking inside the authenticator
// or a new function proxyAuthenticationSucceeded(true|false)
if (proxy != backend->reply->lastProxyAuthentication) {
QNetworkAuthenticationCredential *cred = fetchCachedCredentials(proxy);
if (cred) {
authenticator->setUser(cred->user);
authenticator->setPassword(cred->password);
return;
}
}
backend->reply->lastProxyAuthentication = proxy;
emit q->proxyAuthenticationRequired(proxy, authenticator);
addCredentials(proxy, authenticator);
}
void QNetworkAccessManagerPrivate::addCredentials(const QNetworkProxy &p,
const QAuthenticator *authenticator)
{
Q_ASSERT(authenticator);
Q_ASSERT(p.type() != QNetworkProxy::DefaultProxy);
Q_ASSERT(p.type() != QNetworkProxy::NoProxy);
QString realm = authenticator->realm();
QNetworkProxy proxy = p;
proxy.setUser(authenticator->user());
// Set two credentials: one with the username and one without
do {
// Set two credentials actually: one with and one without the realm
do {
QByteArray cacheKey = proxyAuthenticationKey(proxy, realm);
if (cacheKey.isEmpty())
return; // should not happen
QNetworkAuthenticationCache *auth = new QNetworkAuthenticationCache;
auth->insert(QString(), authenticator->user(), authenticator->password());
objectCache.addEntry(cacheKey, auth); // replace the existing one, if there's any
if (realm.isEmpty()) {
break;
} else {
realm.clear();
}
} while (true);
if (proxy.user().isEmpty())
break;
else
proxy.setUser(QString());
} while (true);
}
QNetworkAuthenticationCredential *
QNetworkAccessManagerPrivate::fetchCachedCredentials(const QNetworkProxy &p,
const QAuthenticator *authenticator)
{
QNetworkProxy proxy = p;
if (proxy.type() == QNetworkProxy::DefaultProxy) {
proxy = QNetworkProxy::applicationProxy();
}
if (!proxy.password().isEmpty())
return 0; // no need to set credentials if it already has them
QString realm;
if (authenticator)
realm = authenticator->realm();
QByteArray cacheKey = proxyAuthenticationKey(proxy, realm);
if (cacheKey.isEmpty())
return 0;
if (!objectCache.hasEntry(cacheKey))
return 0;
QNetworkAuthenticationCache *auth =
static_cast<QNetworkAuthenticationCache *>(objectCache.requestEntryNow(cacheKey));
QNetworkAuthenticationCredential *cred = auth->findClosestMatch(QString());
objectCache.releaseEntry(cacheKey);
// proxy cache credentials always have exactly one item
Q_ASSERT_X(cred, "QNetworkAccessManager",
"Internal inconsistency: found a cache key for a proxy, but it's empty");
return cred;
}
QList<QNetworkProxy> QNetworkAccessManagerPrivate::queryProxy(const QNetworkProxyQuery &query)
{
QList<QNetworkProxy> proxies;
if (proxyFactory) {
proxies = proxyFactory->queryProxy(query);
if (proxies.isEmpty()) {
qWarning("QNetworkAccessManager: factory %p has returned an empty result set",
proxyFactory);
proxies << QNetworkProxy::NoProxy;
}
} else if (proxy.type() == QNetworkProxy::DefaultProxy) {
// no proxy set, query the application
return QNetworkProxyFactory::proxyForQuery(query);
} else {
proxies << proxy;
}
return proxies;
}
#endif
void QNetworkAccessManagerPrivate::addCredentials(const QUrl &url,
const QAuthenticator *authenticator)
{
Q_ASSERT(authenticator);
QString domain = QString::fromLatin1("/"); // FIXME: make QAuthenticator return the domain
QString realm = authenticator->realm();
// Set two credentials actually: one with and one without the username in the URL
QUrl copy = url;
copy.setUserName(authenticator->user());
do {
QByteArray cacheKey = authenticationKey(copy, realm);
if (objectCache.hasEntry(cacheKey)) {
QNetworkAuthenticationCache *auth =
static_cast<QNetworkAuthenticationCache *>(objectCache.requestEntryNow(cacheKey));
auth->insert(domain, authenticator->user(), authenticator->password());
objectCache.releaseEntry(cacheKey);
} else {
QNetworkAuthenticationCache *auth = new QNetworkAuthenticationCache;
auth->insert(domain, authenticator->user(), authenticator->password());
objectCache.addEntry(cacheKey, auth);
}
if (copy.userName().isEmpty()) {
break;
} else {
copy.setUserName(QString());
}
} while (true);
}
/*!
Fetch the credential data from the credential cache.
If auth is 0 (as it is when called from createRequest()), this will try to
look up with an empty realm. That fails in most cases for HTTP (because the
realm is seldom empty for HTTP challenges). In any case, QHttpNetworkConnection
never sends the credentials on the first attempt: it needs to find out what
authentication methods the server supports.
For FTP, realm is always empty.
*/
QNetworkAuthenticationCredential *
QNetworkAccessManagerPrivate::fetchCachedCredentials(const QUrl &url,
const QAuthenticator *authentication)
{
if (!url.password().isEmpty())
return 0; // no need to set credentials if it already has them
QString realm;
if (authentication)
realm = authentication->realm();
QByteArray cacheKey = authenticationKey(url, realm);
if (!objectCache.hasEntry(cacheKey))
return 0;
QNetworkAuthenticationCache *auth =
static_cast<QNetworkAuthenticationCache *>(objectCache.requestEntryNow(cacheKey));
QNetworkAuthenticationCredential *cred = auth->findClosestMatch(url.path());
objectCache.releaseEntry(cacheKey);
return cred;
}
void QNetworkAccessManagerPrivate::clearCache(QNetworkAccessManager *manager)
{
manager->d_func()->objectCache.clear();
}
QNetworkAccessManagerPrivate::~QNetworkAccessManagerPrivate()
{
}
QT_END_NAMESPACE
#include "moc_qnetworkaccessmanager.cpp"
|