Add redirects policy to QNetworkAccessManager

This patch makes it possible to enable/disable redirects on QNAM
level (before it was per-request only). This policy would be applied
to all subsequent requests* created by QNAM.

The policies we support at the moment:
a. Manual - that's what we always had - it's up to a user to handle
   redirects.
b. NoLessSafeRedirectsPolicy - we allow http->http, http->https and
   https->https redirects, but no protocol 'downgrade' (no
   https->http redirects).
c. SameOriginPolicy - we check that protocol/host/port are
   the same.

Updated tst_qnetworkreply.

*We previously were enabling redirect for each request, by
 setting FollowRedirectsAttribute on QNetworkRequest object.
 For backward compatibility this attribute has a higher priority
 (if set) than QNAM's policy (and it will work as NoLessSafeRedirectsPolicy).

[ChangeLog][QtNetwork] Added redirects policy to QNAM

Task-number: QTPM-239
Task-number: QTPM-237
Change-Id: I493d1728254b71b61b5504937e8e01dca5953527
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>

1 files changed, 3 insertions, 0 deletions

diff --git a/src/network/access/qnetworkaccessmanager_p.h b/src/network/access/qnetworkaccessmanager_p.h
index b4b5e6a789..b996e3d58d 100644
--- a/src/network/access/qnetworkaccessmanager_p.h
+++ b/src/network/access/qnetworkaccessmanager_p.h
@@ -55,6 +55,7 @@
 #include "qnetworkaccessmanager.h"
 #include "qnetworkaccesscache_p.h"
 #include "qnetworkaccessbackend_p.h"
+#include "qnetworkrequest.h"
 #include "private/qobject_p.h"
 #include "QtNetwork/qnetworkproxy.h"
 #include "QtNetwork/qnetworksession.h"
@@ -91,6 +92,7 @@ public:
 #endif
           cookieJarCreated(false),
           defaultAccessControl(true),
+          redirectsPolicy(QNetworkRequest::ManualRedirectsPolicy),
           authenticationManager(QSharedPointer<QNetworkAccessAuthenticationManager>::create())
     {
 #ifndef QT_NO_BEARERMANAGEMENT
@@ -193,6 +195,7 @@ public:
 
     bool cookieJarCreated;
     bool defaultAccessControl;
+    QNetworkRequest::RedirectsPolicy redirectsPolicy;
 
     // The cache with authorization data:
     QSharedPointer<QNetworkAccessAuthenticationManager> authenticationManager;