diff --git a/src/utils/kuniqueservice_win.cpp b/src/utils/kuniqueservice_win.cpp index 05d15cda..c32d8fc3 100644 --- a/src/utils/kuniqueservice_win.cpp +++ b/src/utils/kuniqueservice_win.cpp @@ -1,219 +1,224 @@ /* kuniqueservice_win.cpp This file is part of Kleopatra, the KDE keymanager Copyright (c) 2016 by Bundesamt für Sicherheit in der Informationstechnik Software engineering by Intevation GmbH Kleopatra is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. Kleopatra is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA In addition, as a special exception, the copyright holders give permission to link the code of this program with any edition of the Qt library by Trolltech AS, Norway (or with modified versions of Qt that use the same license as Qt), and distribute linked combinations including the two. You must obey the GNU General Public License in all respects for all of the code used other than Qt. If you modify this file, you may extend this exception to your version of the file, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version. */ #include "kuniqueservice.h" #include #include #include #include "kleopatra_debug.h" #include #define MY_DATA_TYPE 12 class KUniqueService::KUniqueServicePrivate { Q_DECLARE_PUBLIC(KUniqueService) Q_DISABLE_COPY(KUniqueServicePrivate) private: KUniqueService *q_ptr; HWND mResponder; HANDLE mCurrentProcess; const QString getWindowName() const { return QCoreApplication::applicationName() + QStringLiteral("Responder"); } HWND getForeignResponder() const { const QString qWndName = getWindowName(); wchar_t *wndName = (wchar_t *)qWndName.utf16(); HWND ret = FindWindow(wndName, wndName); qCDebug(KLEOPATRA_LOG) << "Responder handle:" << ret; return ret; } void createResponder() { WNDCLASS windowClass; const QString qWndName = getWindowName(); wchar_t *wndName = (wchar_t*)qWndName.utf16(); windowClass.style = CS_GLOBALCLASS | CS_DBLCLKS; windowClass.lpfnWndProc = windowProc; windowClass.hInstance = (HINSTANCE) GetModuleHandle(NULL); windowClass.lpszClassName = wndName; windowClass.hIcon = nullptr; windowClass.hCursor = nullptr; windowClass.hbrBackground = nullptr; windowClass.lpszMenuName = nullptr; windowClass.cbClsExtra = 0; windowClass.cbWndExtra = 0; RegisterClass(&windowClass); mResponder = CreateWindow(wndName, wndName, 0, 0, 0, 10, 10, nullptr, nullptr, (HINSTANCE)GetModuleHandle(NULL), nullptr); qCDebug(KLEOPATRA_LOG) << "Created responder: " << qWndName << " with handle: " << mResponder; } void handleRequest(const COPYDATASTRUCT *cds) { Q_Q(KUniqueService); if (cds->dwData != MY_DATA_TYPE) { qCDebug(KLEOPATRA_LOG) << "Responder called with invalid data type:" << cds->dwData; return; } if (mCurrentProcess) { qCDebug(KLEOPATRA_LOG) << "Already serving. Terminating process: " << mCurrentProcess; setExitValue(42); } const QByteArray serialized(static_cast(cds->lpData), cds->cbData); QDataStream ds(serialized); quint32 curProc; ds >> curProc; mCurrentProcess = (HANDLE) curProc; QString workDir; ds >> workDir; QStringList args; ds >> args; qCDebug(KLEOPATRA_LOG) << "Proccess handle: " << mCurrentProcess << " requests activate with args " << args; q->emitActivateRequested(args, workDir); return; } KUniqueServicePrivate(KUniqueService *q) : q_ptr(q), mResponder(nullptr), mCurrentProcess(nullptr) { HWND responder = getForeignResponder(); if (!responder) { // We are the responder createResponder(); return; } // We are the client QByteArray serialized; QDataStream ds(&serialized, QIODevice::WriteOnly); DWORD targetId = 0; GetWindowThreadProcessId(responder, &targetId); if (!targetId) { qCDebug(KLEOPATRA_LOG) << "No process id of responder window"; return; } HANDLE targetHandle = OpenProcess(PROCESS_DUP_HANDLE, FALSE, targetId); if (!targetHandle) { qCDebug(KLEOPATRA_LOG) << "No target handle. Err: " << GetLastError(); } // To allow the other process to terminate the process // needs a handle to us with the required access. if (!DuplicateHandle(GetCurrentProcess(), GetCurrentProcess(), targetHandle, &mCurrentProcess, 0, FALSE, DUPLICATE_SAME_ACCESS)) { qCDebug(KLEOPATRA_LOG) << "Failed to duplicate handle"; } CloseHandle(targetHandle); ds << (qint32) mCurrentProcess << QDir::currentPath() << QCoreApplication::arguments(); COPYDATASTRUCT cds; cds.dwData = MY_DATA_TYPE; cds.cbData = serialized.size(); cds.lpData = serialized.data(); qCDebug(KLEOPATRA_LOG) << "Sending message to existing Window."; SendMessage(responder, WM_COPYDATA, 0, (LPARAM) &cds); // Usually we should be terminated while sending the message. qCDebug(KLEOPATRA_LOG) << "Send message returned."; } static KUniqueServicePrivate *instance(KUniqueService *q) { static KUniqueServicePrivate *self; if (self) { return self; } self = new KUniqueServicePrivate(q); return self; } static LRESULT CALLBACK windowProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) { if (message == WM_COPYDATA) { const COPYDATASTRUCT *cds = (COPYDATASTRUCT*)lParam; // windowProc must be static so the singleton pattern although // it doesn't make much sense in here. instance(nullptr)->handleRequest(cds); return 0; } return DefWindowProc(hWnd, message, wParam, lParam); } ~KUniqueServicePrivate() { if (mResponder) { DestroyWindow(mResponder); } } void setExitValue(int code) { TerminateProcess(mCurrentProcess, (unsigned int) code); mCurrentProcess = nullptr; } }; KUniqueService::KUniqueService() : d_ptr(KUniqueServicePrivate::instance(this)) { } +KUniqueService::~KUniqueService() +{ + delete d_ptr; +} + void KUniqueService::setExitValue(int code) { Q_D(KUniqueService); d->setExitValue(code); }