Add QUrl::topLevelDomain() and move TLD table from QtNetwork to QtCore

Move Qt's copy of the Mozilla public suffix list from QtNetwork
to QtCore and use it to expose a new API function QUrl::topLevelDomain().
This function returns the section of the url that is a registrar-controlled
top level domain.

QtCore now exports a couple of functions to the other Qt modules: qTopLevelDomain,
a helper function for QUrl::topLevelDomain(); and qIsEffectiveTLD(), a helper
function for QNetworkCookeieJar.

The motivation for this new API is to allow QtWebKit implement a Third-Party
Cookie blocking policy. For this QtWebKit needs to know the element of the url
that is the registry-controlled TLD. Without this knowledge it would end up
blocking third-party cookies per host rather than per registry-controlled domain.

See also https://bugs.webkit.org/show_bug.cgi?id=45455

Merge-request: 1205
Task-number: QTBUG-13601
Reviewed-by: Peter Hartmann <peter.hartmann@nokia.com>

1 files changed, 18 insertions, 1 deletions

diff --git a/src/corelib/io/qurl.cpp b/src/corelib/io/qurl.cpp
index efd3f45ef0..c433d3519c 100644
--- a/src/corelib/io/qurl.cpp
+++ b/src/corelib/io/qurl.cpp
@@ -192,7 +192,9 @@
 #if defined QT3_SUPPORT
 #include "qfileinfo.h"
 #endif
-
+#ifndef QT_BOOTSTRAPPED
+#include "qtldurl_p.h"
+#endif
 #if defined(Q_OS_WINCE_WM)
 #pragma optimize("g", off)
 #endif
@@ -5593,6 +5595,21 @@ bool QUrl::hasFragment() const
 }
 
 /*!
+    \since 4.8
+
+    Returns the TLD (Top-Level Domain) of the URL, (e.g. .co.uk, .net).
+    Note that the return value is prefixed with a '.' unless the
+    URL does not contain a valid TLD, in which case the function returns
+    an empty string.
+*/
+#ifndef QT_BOOTSTRAPPED
+QString QUrl::topLevelDomain() const
+{
+    return qTopLevelDomain(host());
+}
+#endif
+
+/*!
     Returns the result of the merge of this URL with \a relative. This
     URL is used as a base to convert \a relative to an absolute URL.