winrt: Use winsock2 API for hostname resolution on WinRT/WinPhone

That API has been available for WinRT and Windows
Phone for some time now. By using it to get the
machine name and for hostname resolution we can get
rid of some winrt-only code and use qhostinfo_win.cpp
on WinRT and Windows phone as well.

Additionally the required capability was added to
tst_qhostinfo so that this auto test can be run without
any manual editing.

Change-Id: I63fa5521bf8cdb0c919bd5a0100ea977c865622a
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@theqtcompany.com>

3 files changed, 11 insertions, 158 deletions

diff --git a/src/network/kernel/kernel.pri b/src/network/kernel/kernel.pri
index 435bfd6c27..ddb30b7b6f 100644
--- a/src/network/kernel/kernel.pri
+++ b/src/network/kernel/kernel.pri
@@ -33,16 +33,16 @@ android {
 }
 
 win32: {
+    SOURCES += kernel/qhostinfo_win.cpp
+
     !winrt {
         SOURCES += kernel/qdnslookup_win.cpp \
-                   kernel/qhostinfo_win.cpp \
                    kernel/qnetworkinterface_win.cpp
         LIBS_PRIVATE += -ldnsapi -liphlpapi
         DEFINES += WINVER=0x0600 _WIN32_WINNT=0x0600
 
     } else {
         SOURCES += kernel/qdnslookup_winrt.cpp \
-                   kernel/qhostinfo_winrt.cpp \
                    kernel/qnetworkinterface_winrt.cpp
     }
 }
diff --git a/src/network/kernel/qhostinfo_win.cpp b/src/network/kernel/qhostinfo_win.cpp
index da28cd48c1..7e45e9f949 100644
--- a/src/network/kernel/qhostinfo_win.cpp
+++ b/src/network/kernel/qhostinfo_win.cpp
@@ -34,7 +34,6 @@
 #include <winsock2.h>
 
 #include "qhostinfo_p.h"
-#include "private/qnativesocketengine_p.h"
 #include <ws2tcpip.h>
 #include <private/qsystemlibrary_p.h>
 #include <qmutex.h>
@@ -77,14 +76,18 @@ static void resolveLibrary()
 {
     // Attempt to resolve getaddrinfo(); without it we'll have to fall
     // back to gethostbyname(), which has no IPv6 support.
-#if !defined(Q_OS_WINCE)
-    local_getaddrinfo = (getaddrinfoProto) QSystemLibrary::resolve(QLatin1String("ws2_32"), "getaddrinfo");
-    local_freeaddrinfo = (freeaddrinfoProto) QSystemLibrary::resolve(QLatin1String("ws2_32"), "freeaddrinfo");
-    local_getnameinfo = (getnameinfoProto) QSystemLibrary::resolve(QLatin1String("ws2_32"), "getnameinfo");
-#else
+#if defined(Q_OS_WINCE)
     local_getaddrinfo = (getaddrinfoProto) QSystemLibrary::resolve(QLatin1String("ws2"), "getaddrinfo");
     local_freeaddrinfo = (freeaddrinfoProto) QSystemLibrary::resolve(QLatin1String("ws2"), "freeaddrinfo");
     local_getnameinfo = (getnameinfoProto) QSystemLibrary::resolve(QLatin1String("ws2"), "getnameinfo");
+#elif defined (Q_OS_WINRT)
+    local_getaddrinfo = (getaddrinfoProto) &getaddrinfo;
+    local_freeaddrinfo = (freeaddrinfoProto) &freeaddrinfo;
+    local_getnameinfo = (getnameinfoProto) getnameinfo;
+#else
+    local_getaddrinfo = (getaddrinfoProto) QSystemLibrary::resolve(QLatin1String("ws2_32"), "getaddrinfo");
+    local_freeaddrinfo = (freeaddrinfoProto) QSystemLibrary::resolve(QLatin1String("ws2_32"), "freeaddrinfo");
+    local_getnameinfo = (getnameinfoProto) QSystemLibrary::resolve(QLatin1String("ws2_32"), "getnameinfo");
 #endif
 }
 
diff --git a/src/network/kernel/qhostinfo_winrt.cpp b/src/network/kernel/qhostinfo_winrt.cpp
deleted file mode 100644
index 1840bebd39..0000000000
--- a/src/network/kernel/qhostinfo_winrt.cpp
+++ /dev/null
@@ -1,150 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2015 The Qt Company Ltd.
-** Contact: http://www.qt.io/licensing/
-**
-** This file is part of the QtNetwork module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL21$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see http://www.qt.io/terms-conditions. For further
-** information use the contact form at http://www.qt.io/contact-us.
-**
-** 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 or version 3 as published by the Free
-** Software Foundation and appearing in the file LICENSE.LGPLv21 and
-** LICENSE.LGPLv3 included in the packaging of this file. Please review the
-** following information to ensure the GNU Lesser General Public License
-** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** As a special exception, The Qt Company gives you certain additional
-** rights. These rights are described in The Qt Company LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "qhostinfo_p.h"
-
-#include <qfunctions_winrt.h>
-#include <qurl.h>
-
-#include <wrl.h>
-#include <windows.networking.h>
-#include <windows.networking.sockets.h>
-#include <windows.networking.connectivity.h>
-using namespace Microsoft::WRL;
-using namespace Microsoft::WRL::Wrappers;
-using namespace ABI::Windows::Foundation;
-using namespace ABI::Windows::Foundation::Collections;
-using namespace ABI::Windows::Networking;
-using namespace ABI::Windows::Networking::Connectivity;
-using namespace ABI::Windows::Networking::Sockets;
-
-QT_BEGIN_NAMESPACE
-
-#define E_NO_SUCH_HOST 0x80072af9
-
-//#define QHOSTINFO_DEBUG
-
-QHostInfo QHostInfoAgent::fromName(const QString &hostName)
-{
-    QHostInfo results;
-
-    QHostAddress address;
-    if (address.setAddress(hostName)) {
-        // Reverse lookup
-        // TODO: is there a replacement for getnameinfo for winrt?
-        Q_UNIMPLEMENTED();
-        return results;
-    }
-
-    QByteArray aceHostname = QUrl::toAce(hostName);
-    results.setHostName(hostName);
-    if (aceHostname.isEmpty()) {
-        results.setError(QHostInfo::HostNotFound);
-        results.setErrorString(hostName.isEmpty() ? tr("No host name given") : tr("Invalid hostname"));
-        return results;
-    }
-
-    ComPtr<IHostNameFactory> hostnameFactory;
-    HRESULT hr = RoGetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Networking_HostName).Get(),
-                                        IID_PPV_ARGS(&hostnameFactory));
-    Q_ASSERT_SUCCEEDED(hr);
-
-    ComPtr<IHostName> host;
-    HStringReference hostNameRef((const wchar_t*)hostName.utf16());
-    hr = hostnameFactory->CreateHostName(hostNameRef.Get(), &host);
-    Q_ASSERT_SUCCEEDED(hr);
-
-    ComPtr<IDatagramSocketStatics> datagramSocketStatics;
-    hr = GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Networking_Sockets_DatagramSocket).Get(), &datagramSocketStatics);
-    Q_ASSERT_SUCCEEDED(hr);
-
-    ComPtr<IAsyncOperation<IVectorView<EndpointPair *> *>> op;
-    hr = datagramSocketStatics->GetEndpointPairsAsync(host.Get(),
-                                                 HString::MakeReference(L"0").Get(),
-                                                 &op);
-    Q_ASSERT_SUCCEEDED(hr);
-
-    ComPtr<IVectorView<EndpointPair *>> endpointPairs;
-    hr = op->GetResults(&endpointPairs);
-    int waitCount = 0;
-    while (hr == E_ILLEGAL_METHOD_CALL) {
-        WaitForSingleObjectEx(GetCurrentThread(), 50, FALSE);
-        hr = op->GetResults(&endpointPairs);
-        if (++waitCount > 1200) // Wait for 1 minute max
-            return results;
-    }
-
-    if (hr == E_NO_SUCH_HOST || !endpointPairs) {
-        results.setError(QHostInfo::HostNotFound);
-        results.setErrorString(tr("Host %1 could not be found.").arg(hostName));
-        return results;
-    }
-    Q_ASSERT_SUCCEEDED(hr);
-
-    unsigned int size;
-    hr = endpointPairs->get_Size(&size);
-    Q_ASSERT_SUCCEEDED(hr);
-    QList<QHostAddress> addresses;
-    for (unsigned int i = 0; i < size; ++i) {
-        ComPtr<IEndpointPair> endpointpair;
-        hr = endpointPairs->GetAt(i, &endpointpair);
-        Q_ASSERT_SUCCEEDED(hr);
-        ComPtr<IHostName> remoteHost;
-        hr = endpointpair->get_RemoteHostName(&remoteHost);
-        Q_ASSERT_SUCCEEDED(hr);
-        if (!remoteHost)
-            continue;
-        HostNameType type;
-        hr = remoteHost->get_Type(&type);
-        Q_ASSERT_SUCCEEDED(hr);
-        if (type == HostNameType_DomainName)
-            continue;
-
-        HString name;
-        hr = remoteHost->get_CanonicalName(name.GetAddressOf());
-        Q_ASSERT_SUCCEEDED(hr);
-        UINT32 length;
-        PCWSTR rawString = name.GetRawBuffer(&length);
-        QHostAddress addr;
-        addr.setAddress(QString::fromWCharArray(rawString, length));
-        if (!addresses.contains(addr))
-            addresses.append(addr);
-    }
-    results.setAddresses(addresses);
-
-    return results;
-}
-
-// QString QHostInfo::localDomainName() defined in qnetworkinterface_win.cpp
-
-QT_END_NAMESPACE