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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#define QT_NO_URL_CAST_FROM_STRING
#include "qwindowsservices.h"
#include <QtCore/qt_windows.h>
#include <QtCore/qurl.h>
#include <QtCore/qdebug.h>
#include <QtCore/qdir.h>
#include <QtCore/qscopedpointer.h>
#include <QtCore/qthread.h>
#include <QtCore/private/qwinregistry_p.h>
#include <shlobj.h>
#include <intshcut.h>
QT_BEGIN_NAMESPACE
enum { debug = 0 };
class QWindowsShellExecuteThread : public QThread
{
public:
explicit QWindowsShellExecuteThread(const wchar_t *path) : m_path(path) { }
void run() override
{
if (SUCCEEDED(CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE))) {
m_result = ShellExecute(nullptr, nullptr, m_path, nullptr, nullptr, SW_SHOWNORMAL);
CoUninitialize();
}
}
HINSTANCE result() const { return m_result; }
private:
HINSTANCE m_result = nullptr;
const wchar_t *m_path;
};
static inline bool shellExecute(const QUrl &url)
{
const QString nativeFilePath = url.isLocalFile() && !url.hasFragment() && !url.hasQuery()
? QDir::toNativeSeparators(url.toLocalFile())
: url.toString(QUrl::FullyEncoded);
// Run ShellExecute() in a thread since it may spin the event loop.
// Prevent it from interfering with processing of posted events (QTBUG-85676).
QWindowsShellExecuteThread thread(reinterpret_cast<const wchar_t *>(nativeFilePath.utf16()));
thread.start();
thread.wait();
const auto result = reinterpret_cast<quintptr>(thread.result());
// ShellExecute returns a value greater than 32 if successful
if (result <= 32) {
qWarning("ShellExecute '%ls' failed (error %zu).", qUtf16Printable(url.toString()), result);
return false;
}
return true;
}
// Retrieve the commandline for the default mail client. It contains a
// placeholder %1 for the URL. The default key used below is the
// command line for the mailto: shell command.
static inline QString mailCommand()
{
enum { BufferSize = sizeof(wchar_t) * MAX_PATH };
const wchar_t mailUserKey[] = L"Software\\Microsoft\\Windows\\Shell\\Associations\\UrlAssociations\\mailto\\UserChoice";
// Check if user has set preference, otherwise use default.
QString keyName = QWinRegistryKey(HKEY_CURRENT_USER, mailUserKey)
.stringValue( L"Progid");
const QLatin1String mailto = keyName.isEmpty() ? QLatin1String("mailto") : QLatin1String();
keyName += mailto + QLatin1String("\\Shell\\Open\\Command");
if (debug)
qDebug() << __FUNCTION__ << "keyName=" << keyName;
const QString command = QWinRegistryKey(HKEY_CLASSES_ROOT, keyName).stringValue(L"");
// QTBUG-57816: As of Windows 10, if there is no mail client installed, an entry like
// "rundll32.exe .. url.dll,MailToProtocolHandler %l" is returned. Launching it
// silently fails or brings up a broken dialog after a long time, so exclude it and
// fall back to ShellExecute() which brings up the URL assocation dialog.
if (command.isEmpty() || command.contains(u",MailToProtocolHandler"))
return QString();
wchar_t expandedCommand[MAX_PATH] = {0};
return ExpandEnvironmentStrings(reinterpret_cast<const wchar_t *>(command.utf16()),
expandedCommand, MAX_PATH)
? QString::fromWCharArray(expandedCommand) : command;
}
static inline bool launchMail(const QUrl &url)
{
QString command = mailCommand();
if (command.isEmpty()) {
qWarning("Cannot launch '%ls': There is no mail program installed.", qUtf16Printable(url.toString()));
return false;
}
//Make sure the path for the process is in quotes
const QChar doubleQuote = u'"';
if (!command.startsWith(doubleQuote)) {
const int exeIndex = command.indexOf(QStringLiteral(".exe "), 0, Qt::CaseInsensitive);
if (exeIndex != -1) {
command.insert(exeIndex + 4, doubleQuote);
command.prepend(doubleQuote);
}
}
// Pass the url as the parameter. Should use QProcess::startDetached(),
// but that cannot handle a Windows command line [yet].
command.replace(QLatin1String("%1"), url.toString(QUrl::FullyEncoded));
if (debug)
qDebug() << __FUNCTION__ << "Launching" << command;
//start the process
PROCESS_INFORMATION pi;
ZeroMemory(&pi, sizeof(pi));
STARTUPINFO si;
ZeroMemory(&si, sizeof(si));
si.cb = sizeof(si);
if (!CreateProcess(nullptr, reinterpret_cast<wchar_t *>(const_cast<ushort *>(command.utf16())),
nullptr, nullptr, FALSE, 0, nullptr, nullptr, &si, &pi)) {
qErrnoWarning("Unable to launch '%ls'", qUtf16Printable(command));
return false;
}
CloseHandle(pi.hProcess);
CloseHandle(pi.hThread);
return true;
}
bool QWindowsServices::openUrl(const QUrl &url)
{
const QString scheme = url.scheme();
if (scheme == u"mailto" && launchMail(url))
return true;
return shellExecute(url);
}
bool QWindowsServices::openDocument(const QUrl &url)
{
return shellExecute(url);
}
QT_END_NAMESPACE
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