mirror of
https://github.com/Nheko-Reborn/nheko.git
synced 2024-10-30 09:30:47 +03:00
Use third_party singleapplication helper
This may still not raise the application correctly on some WMs, because they don't allow disturbing the user with windows popping up. I don't think we want to work around that. fixes #84 fixes #113
This commit is contained in:
Nicolas Werner
parent
3ef0d9db3c
commit
e96241265e
15 changed files with 1488 additions and 131 deletions
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@ -292,7 +292,6 @@ set(SRC_FILES
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src/RegisterPage.cpp
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src/RegisterPage.cpp
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src/RoomInfoListItem.cpp
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src/RoomInfoListItem.cpp
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src/RoomList.cpp
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src/RoomList.cpp
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src/RunGuard.cpp
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src/SideBarActions.cpp
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src/SideBarActions.cpp
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src/Splitter.cpp
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src/Splitter.cpp
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src/popups/SuggestionsPopup.cpp
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src/popups/SuggestionsPopup.cpp
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@ -420,6 +419,10 @@ else()
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find_package(Tweeny REQUIRED)
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find_package(Tweeny REQUIRED)
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endif()
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endif()
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# single instance functionality
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set(QAPPLICATION_CLASS QApplication CACHE STRING "Inheritance class for SingleApplication")
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add_subdirectory(third_party/SingleApplication-3.0.19/)
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feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)
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feature_summary(WHAT ALL INCLUDE_QUIET_PACKAGES FATAL_ON_MISSING_REQUIRED_PACKAGES)
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qt5_wrap_cpp(MOC_HEADERS
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qt5_wrap_cpp(MOC_HEADERS
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@ -563,7 +566,8 @@ target_link_libraries(nheko PRIVATE
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nlohmann_json::nlohmann_json
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nlohmann_json::nlohmann_json
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lmdbxx::lmdbxx
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lmdbxx::lmdbxx
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liblmdb::lmdb
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liblmdb::lmdb
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tweeny)
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tweeny
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SingleApplication::SingleApplication)
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if(MSVC)
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if(MSVC)
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target_link_libraries(nheko PRIVATE ntdll)
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target_link_libraries(nheko PRIVATE ntdll)
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@ -287,5 +287,9 @@ Here are some screen shots to get a feel for the UI, but things will probably ch
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### Third party
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[Single Application for Qt](https://github.com/itay-grudev/SingleApplication)
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[Matrix]:https://matrix.org
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[Matrix]:https://matrix.org
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[Riot]:https://riot.im
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[Riot]:https://riot.im
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@ -1,84 +0,0 @@
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#include "RunGuard.h"
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#include <QCryptographicHash>
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namespace {
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QString
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generateKeyHash(const QString &key, const QString &salt)
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{
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QByteArray data;
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data.append(key.toUtf8());
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data.append(salt.toUtf8());
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data = QCryptographicHash::hash(data, QCryptographicHash::Sha1).toHex();
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return data;
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}
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}
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RunGuard::RunGuard(const QString &key)
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: key(key)
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, memLockKey(generateKeyHash(key, "_memLockKey"))
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, sharedmemKey(generateKeyHash(key, "_sharedmemKey"))
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, sharedMem(sharedmemKey)
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, memLock(memLockKey, 1)
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{
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memLock.acquire();
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{
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// Fix for *nix: http://habrahabr.ru/post/173281/
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QSharedMemory fix(sharedmemKey);
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fix.attach();
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}
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memLock.release();
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}
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RunGuard::~RunGuard() { release(); }
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bool
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RunGuard::isAnotherRunning()
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{
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if (sharedMem.isAttached())
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return false;
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memLock.acquire();
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const bool isRunning = sharedMem.attach();
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if (isRunning)
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sharedMem.detach();
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memLock.release();
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return isRunning;
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}
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bool
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RunGuard::tryToRun()
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{
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// Extra check
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if (isAnotherRunning())
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return false;
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memLock.acquire();
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const bool result = sharedMem.create(sizeof(quint64));
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memLock.release();
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if (!result) {
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release();
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return false;
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}
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return true;
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}
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void
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RunGuard::release()
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{
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memLock.acquire();
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if (sharedMem.isAttached())
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sharedMem.detach();
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memLock.release();
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}
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@ -1,31 +0,0 @@
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#pragma once
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//
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// Taken from
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// https://stackoverflow.com/questions/5006547/qt-best-practice-for-a-single-instance-app-protection
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//
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#include <QObject>
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#include <QSharedMemory>
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#include <QSystemSemaphore>
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class RunGuard
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{
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public:
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RunGuard(const QString &key);
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~RunGuard();
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bool isAnotherRunning();
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bool tryToRun();
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void release();
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private:
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const QString key;
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const QString memLockKey;
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const QString sharedmemKey;
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QSharedMemory sharedMem;
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QSystemSemaphore memLock;
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Q_DISABLE_COPY(RunGuard)
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};
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26
src/main.cpp
26
src/main.cpp
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@ -37,9 +37,9 @@
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#include "Logging.h"
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#include "Logging.h"
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#include "MainWindow.h"
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#include "MainWindow.h"
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#include "MatrixClient.h"
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#include "MatrixClient.h"
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#include "RunGuard.h"
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#include "Utils.h"
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#include "Utils.h"
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#include "config/nheko.h"
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#include "config/nheko.h"
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#include "singleapplication.h"
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#if defined(Q_OS_MAC)
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#if defined(Q_OS_MAC)
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#include "emoji/MacHelper.h"
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#include "emoji/MacHelper.h"
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@ -104,18 +104,6 @@ createCacheDirectory()
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int
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int
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main(int argc, char *argv[])
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main(int argc, char *argv[])
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{
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{
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RunGuard guard("run_guard");
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if (!guard.tryToRun()) {
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QApplication a(argc, argv);
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QMessageBox msgBox;
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msgBox.setText("Another instance of Nheko is running");
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msgBox.exec();
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return 0;
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}
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#if defined(Q_OS_LINUX) || defined(Q_OS_WIN) || defined(Q_OS_FREEBSD)
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#if defined(Q_OS_LINUX) || defined(Q_OS_WIN) || defined(Q_OS_FREEBSD)
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if (qgetenv("QT_SCALE_FACTOR").size() == 0) {
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if (qgetenv("QT_SCALE_FACTOR").size() == 0) {
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float factor = utils::scaleFactor();
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float factor = utils::scaleFactor();
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@ -130,7 +118,12 @@ main(int argc, char *argv[])
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QCoreApplication::setOrganizationName("nheko");
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QCoreApplication::setOrganizationName("nheko");
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QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
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QCoreApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
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QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
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QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
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QApplication app(argc, argv);
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SingleApplication app(argc,
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argv,
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false,
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SingleApplication::Mode::User |
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SingleApplication::Mode::ExcludeAppPath |
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SingleApplication::Mode::ExcludeAppVersion);
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QCommandLineParser parser;
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QCommandLineParser parser;
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parser.addHelpOption();
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parser.addHelpOption();
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@ -192,6 +185,11 @@ main(int argc, char *argv[])
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nhlog::net()->debug("bye");
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nhlog::net()->debug("bye");
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}
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}
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});
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});
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QObject::connect(&app, &SingleApplication::instanceStarted, &w, [&w]() {
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w.show();
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w.raise();
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w.activateWindow();
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});
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#if defined(Q_OS_MAC)
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#if defined(Q_OS_MAC)
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// Temporary solution for the emoji picker until
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// Temporary solution for the emoji picker until
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9
third_party/SingleApplication-3.0.19/.gitignore
vendored
Normal file
9
third_party/SingleApplication-3.0.19/.gitignore
vendored
Normal file
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@ -0,0 +1,9 @@
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/examples/*/*.o
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/examples/*/Makefile
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/examples/*/moc_*.cpp
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/examples/*/moc_predefs.h
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/examples/*/*.qmake.stash
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/examples/basic/basic
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/examples/calculator/calculator
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/examples/sending_arguments/sending_arguments
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CMakeLists.txt.user
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237
third_party/SingleApplication-3.0.19/CHANGELOG.md
vendored
Normal file
237
third_party/SingleApplication-3.0.19/CHANGELOG.md
vendored
Normal file
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@ -0,0 +1,237 @@
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Changelog
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=========
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__3.0.19__
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----------
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* Fixed code warning for depricated functions in Qt 5.10 related to `QTime` and `qrand()`.
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_Hennadii Chernyshchyk_
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_Anton Filimonov_
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_Jonas Kvinge_
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__3.0.18__
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----------
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* Fallback to standard QApplication class on iOS and Android systems where
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the library is not supported.
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* Added Build CI tests to verify the library builds successfully on Linux, Windows and MacOS across multiple Qt versions.
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_Anton Filimonov_
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__3.0.17__
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----------
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* Fixed compilation warning/error caused by `geteuid()` on unix based systems.
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_Iakov Kirilenko_
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* Added CMake support
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_Hennadii Chernyshchyk_
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__3.0.16__
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----------
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* Use geteuid and getpwuid to get username on Unix, fallback to environment variable.
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_Jonas Kvinge_
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__3.0.15__
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----------
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* Bug Fix: sendMessage() might return false even though data was actually written.
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_Jonas Kvinge_
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__3.0.14__
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----------
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* Fixed uninitialised variables in the `SingleApplicationPrivate` constructor.
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__3.0.13a__
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----------
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* Process socket events asynchronously
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* Fix undefined variable error on Windows
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_Francis Giraldeau_
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__3.0.12a__
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----------
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* Removed signal handling.
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__3.0.11a__
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----------
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* Fixed bug where the message sent by the second process was not received
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correctly when the message is sent immediately following a connection.
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_Francis Giraldeau_
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* Refactored code and implemented shared memory block consistency checks
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via `qChecksum()` (CRC-16).
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* Explicit `qWarning` and `qCritical` when the library is unable to initialise
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correctly.
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__3.0.10__
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----------
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* Removed C style casts and eliminated all clang warnings. Fixed `instanceId`
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reading from only one byte in the message deserialization. Cleaned up
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serialization code using `QDataStream`. Changed connection type to use
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`quint8 enum` rather than `char`.
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* Renamed `SingleAppConnectionType` to `ConnectionType`. Added initialization
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values to all `ConnectionType` enum cases.
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_Jedidiah Buck McCready_
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__3.0.9__
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---------
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* Added SingleApplicationPrivate::primaryPid() as a solution to allow
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bringing the primary window of an application to the foreground on
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Windows.
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_Eelco van Dam from Peacs BV_
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__3.0.8__
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---------
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* Bug fix - changed QApplication::instance() to QCoreApplication::instance()
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_Evgeniy Bazhenov_
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__3.0.7a__
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----------
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* Fixed compilation error with Mingw32 in MXE thanks to Vitaly Tonkacheyev.
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* Removed QMutex used for thread safe behaviour. The implementation now uses
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QCoreApplication::instance() to get an instance to SingleApplication for
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memory deallocation.
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__3.0.6a__
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----------
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* Reverted GetUserName API usage on Windows. Fixed bug with missing library.
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* Fixed bug in the Calculator example, preventing it's window to be raised
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on Windows.
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Special thanks to Charles Gunawan.
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__3.0.5a__
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----------
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* Fixed a memory leak in the SingleApplicationPrivate destructor.
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||||||
|
_Sergei Moiseev_
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||||||
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||||||
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__3.0.4a__
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||||||
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----------
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||||||
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||||||
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* Fixed shadow and uninitialised variable warnings.
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||||||
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||||||
|
_Paul Walmsley_
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||||||
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__3.0.3a__
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----------
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* Removed Microsoft Windows specific code for getting username due to
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||||||
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multiple problems and compiler differences on Windows platforms. On
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Windows the shared memory block in User mode now includes the user's
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home path (which contains the user's username).
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* Explicitly getting absolute path of the user's home directory as on Unix
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a relative path (`~`) may be returned.
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__3.0.2a__
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----------
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* Fixed bug on Windows when username containing wide characters causes the
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library to crash.
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_Le Liu_
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__3.0.1a__
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----------
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* Allows the application path and version to be excluded from the server name
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hash. The following flags were added for this purpose:
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* `SingleApplication::Mode::ExcludeAppVersion`
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* `SingleApplication::Mode::ExcludeAppPath`
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||||||
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* Allow a non elevated process to connect to a local server created by an
|
||||||
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elevated process run by the same user on Windows
|
||||||
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* Fixes a problem with upper case letters in paths on Windows
|
||||||
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||||||
|
_Le Liu_
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||||||
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__v3.0a__
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||||||
|
---------
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||||||
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|
||||||
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* Deprecated secondary instances count.
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||||||
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* Added a sendMessage() method to send a message to the primary instance.
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||||||
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* Added a receivedMessage() signal, emitted when a message is received from a
|
||||||
|
secondary instance.
|
||||||
|
* The SingleApplication constructor's third parameter is now a bool
|
||||||
|
specifying if the current instance should be allowed to run as a secondary
|
||||||
|
instance if there is already a primary instance.
|
||||||
|
* The SingleApplication constructor accept a fourth parameter specifying if
|
||||||
|
the SingleApplication block should be User-wide or System-wide.
|
||||||
|
* SingleApplication no longer relies on `applicationName` and
|
||||||
|
`organizationName` to be set. It instead concatenates all of the following
|
||||||
|
data and computes a `SHA256` hash which is used as the key of the
|
||||||
|
`QSharedMemory` block and the `QLocalServer`. Since at least
|
||||||
|
`applicationFilePath` is always present there is no need to explicitly set
|
||||||
|
any of the following prior to initialising `SingleApplication`.
|
||||||
|
* `QCoreApplication::applicationName`
|
||||||
|
* `QCoreApplication::applicationVersion`
|
||||||
|
* `QCoreApplication::applicationFilePath`
|
||||||
|
* `QCoreApplication::organizationName`
|
||||||
|
* `QCoreApplication::organizationDomain`
|
||||||
|
* User name or home directory path if in User mode
|
||||||
|
* The primary instance is no longer notified when a secondary instance had
|
||||||
|
been started by default. A `Mode` flag for this feature exists.
|
||||||
|
* Added `instanceNumber()` which represents a unique identifier for each
|
||||||
|
secondary instance started. When called from the primary instance will
|
||||||
|
return `0`.
|
||||||
|
|
||||||
|
__v2.4__
|
||||||
|
--------
|
||||||
|
|
||||||
|
* Stability improvements
|
||||||
|
* Support for secondary instances.
|
||||||
|
* The library now recovers safely after the primary process has crashed
|
||||||
|
and the shared memory had not been deleted.
|
||||||
|
|
||||||
|
__v2.3__
|
||||||
|
--------
|
||||||
|
|
||||||
|
* Improved pimpl design and inheritance safety.
|
||||||
|
|
||||||
|
_Vladislav Pyatnichenko_
|
||||||
|
|
||||||
|
__v2.2__
|
||||||
|
--------
|
||||||
|
|
||||||
|
* The `QAPPLICATION_CLASS` macro can now be defined in the file including the
|
||||||
|
Single Application header or with a `DEFINES+=` statement in the project file.
|
||||||
|
|
||||||
|
__v2.1__
|
||||||
|
--------
|
||||||
|
|
||||||
|
* A race condition can no longer occur when starting two processes nearly
|
||||||
|
simultaneously.
|
||||||
|
|
||||||
|
Fix issue [#3](https://github.com/itay-grudev/SingleApplication/issues/3)
|
||||||
|
|
||||||
|
__v2.0__
|
||||||
|
--------
|
||||||
|
|
||||||
|
* SingleApplication is now being passed a reference to `argc` instead of a
|
||||||
|
copy.
|
||||||
|
|
||||||
|
Fix issue [#1](https://github.com/itay-grudev/SingleApplication/issues/1)
|
||||||
|
|
||||||
|
* Improved documentation.
|
||||||
45
third_party/SingleApplication-3.0.19/CMakeLists.txt
vendored
Normal file
45
third_party/SingleApplication-3.0.19/CMakeLists.txt
vendored
Normal file
|
|
@ -0,0 +1,45 @@
|
||||||
|
cmake_minimum_required(VERSION 3.1.0)
|
||||||
|
|
||||||
|
project(SingleApplication)
|
||||||
|
|
||||||
|
set(CMAKE_INCLUDE_CURRENT_DIR ON)
|
||||||
|
set(CMAKE_AUTOMOC ON)
|
||||||
|
|
||||||
|
# SingleApplication base class
|
||||||
|
set(QAPPLICATION_CLASS QCoreApplication CACHE STRING "Inheritance class for SingleApplication")
|
||||||
|
set_property(CACHE QAPPLICATION_CLASS PROPERTY STRINGS QApplication QGuiApplication QCoreApplication)
|
||||||
|
|
||||||
|
# Libary target
|
||||||
|
add_library(${PROJECT_NAME} STATIC
|
||||||
|
singleapplication.cpp
|
||||||
|
singleapplication_p.cpp
|
||||||
|
)
|
||||||
|
|
||||||
|
# Find dependencies
|
||||||
|
find_package(Qt5Network)
|
||||||
|
if(QAPPLICATION_CLASS STREQUAL QApplication)
|
||||||
|
find_package(Qt5 COMPONENTS Widgets REQUIRED)
|
||||||
|
elseif(QAPPLICATION_CLASS STREQUAL QGuiApplication)
|
||||||
|
find_package(Qt5 COMPONENTS Gui REQUIRED)
|
||||||
|
else()
|
||||||
|
find_package(Qt5 COMPONENTS Core REQUIRED)
|
||||||
|
endif()
|
||||||
|
target_compile_definitions(${PROJECT_NAME} PUBLIC QAPPLICATION_CLASS=${QAPPLICATION_CLASS})
|
||||||
|
|
||||||
|
# Link dependencies
|
||||||
|
target_link_libraries(${PROJECT_NAME} PRIVATE Qt5::Network)
|
||||||
|
if(QAPPLICATION_CLASS STREQUAL QApplication)
|
||||||
|
target_link_libraries(${PROJECT_NAME} PRIVATE Qt5::Widgets)
|
||||||
|
elseif(QAPPLICATION_CLASS STREQUAL QGuiApplication)
|
||||||
|
target_link_libraries(${PROJECT_NAME} PRIVATE Qt5::Gui)
|
||||||
|
else()
|
||||||
|
target_link_libraries(${PROJECT_NAME} PRIVATE Qt5::Core)
|
||||||
|
endif()
|
||||||
|
|
||||||
|
if(WIN32)
|
||||||
|
target_link_libraries(${PROJECT_NAME} PRIVATE advapi32)
|
||||||
|
endif()
|
||||||
|
|
||||||
|
target_include_directories(${PROJECT_NAME} PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
|
||||||
|
|
||||||
|
add_library(${PROJECT_NAME}::${PROJECT_NAME} ALIAS ${PROJECT_NAME})
|
||||||
24
third_party/SingleApplication-3.0.19/LICENSE
vendored
Normal file
24
third_party/SingleApplication-3.0.19/LICENSE
vendored
Normal file
|
|
@ -0,0 +1,24 @@
|
||||||
|
The MIT License (MIT)
|
||||||
|
|
||||||
|
Copyright (c) Itay Grudev 2015 - 2016
|
||||||
|
|
||||||
|
Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
of this software and associated documentation files (the "Software"), to deal
|
||||||
|
in the Software without restriction, including without limitation the rights
|
||||||
|
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
copies of the Software, and to permit persons to whom the Software is
|
||||||
|
furnished to do so, subject to the following conditions:
|
||||||
|
|
||||||
|
The above copyright notice and this permission notice shall be included in
|
||||||
|
all copies or substantial portions of the Software.
|
||||||
|
|
||||||
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
THE SOFTWARE.
|
||||||
|
|
||||||
|
Note: Some of the examples include code not distributed under the terms of the
|
||||||
|
MIT License.
|
||||||
277
third_party/SingleApplication-3.0.19/README.md
vendored
Normal file
277
third_party/SingleApplication-3.0.19/README.md
vendored
Normal file
|
|
@ -0,0 +1,277 @@
|
||||||
|
SingleApplication
|
||||||
|
=================
|
||||||
|
|
||||||
|
This is a replacement of the QtSingleApplication for `Qt5`.
|
||||||
|
|
||||||
|
Keeps the Primary Instance of your Application and kills each subsequent
|
||||||
|
instances. It can (if enabled) spawn secondary (non-related to the primary)
|
||||||
|
instances and can send data to the primary instance from secondary instances.
|
||||||
|
|
||||||
|
Usage
|
||||||
|
-----
|
||||||
|
|
||||||
|
The `SingleApplication` class inherits from whatever `Q[Core|Gui]Application`
|
||||||
|
class you specify via the `QAPPLICATION_CLASS` macro (`QCoreApplication` is the
|
||||||
|
default). Further usage is similar to the use of the `Q[Core|Gui]Application`
|
||||||
|
classes.
|
||||||
|
|
||||||
|
The library sets up a `QLocalServer` and a `QSharedMemory` block. The first
|
||||||
|
instance of your Application is your Primary Instance. It would check if the
|
||||||
|
shared memory block exists and if not it will start a `QLocalServer` and listen
|
||||||
|
for connections. Each subsequent instance of your application would check if the
|
||||||
|
shared memory block exists and if it does, it will connect to the QLocalServer
|
||||||
|
to notify the primary instance that a new instance had been started, after which
|
||||||
|
it would terminate with status code `0`. In the Primary Instance
|
||||||
|
`SingleApplication` would emit the `instanceStarted()` signal upon detecting
|
||||||
|
that a new instance had been started.
|
||||||
|
|
||||||
|
The library uses `stdlib` to terminate the program with the `exit()` function.
|
||||||
|
|
||||||
|
You can use the library as if you use any other `QCoreApplication` derived
|
||||||
|
class:
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
#include <QApplication>
|
||||||
|
#include <SingleApplication.h>
|
||||||
|
|
||||||
|
int main( int argc, char* argv[] )
|
||||||
|
{
|
||||||
|
SingleApplication app( argc, argv );
|
||||||
|
|
||||||
|
return app.exec();
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
To include the library files I would recommend that you add it as a git
|
||||||
|
submodule to your project and include it's contents with a `.pri` file. Here is
|
||||||
|
how:
|
||||||
|
|
||||||
|
```bash
|
||||||
|
git submodule add git@github.com:itay-grudev/SingleApplication.git singleapplication
|
||||||
|
```
|
||||||
|
|
||||||
|
**Qmake:**
|
||||||
|
|
||||||
|
Then include the `singleapplication.pri` file in your `.pro` project file.
|
||||||
|
|
||||||
|
```qmake
|
||||||
|
include(singleapplication/singleapplication.pri)
|
||||||
|
DEFINES += QAPPLICATION_CLASS=QApplication
|
||||||
|
```
|
||||||
|
|
||||||
|
**CMake:**
|
||||||
|
|
||||||
|
Then include the subdirectory in your `CMakeLists.txt` project file.
|
||||||
|
|
||||||
|
```cmake
|
||||||
|
set(QAPPLICATION_CLASS QApplication CACHE STRING "Inheritance class for SingleApplication")
|
||||||
|
add_subdirectory(src/third-party/singleapplication)
|
||||||
|
```
|
||||||
|
|
||||||
|
Also don't forget to specify which `QCoreApplication` class your app is using if it
|
||||||
|
is not `QCoreApplication` as in examples above.
|
||||||
|
|
||||||
|
The `Instance Started` signal
|
||||||
|
------------------------
|
||||||
|
|
||||||
|
The SingleApplication class implements a `instanceStarted()` signal. You can
|
||||||
|
bind to that signal to raise your application's window when a new instance had
|
||||||
|
been started, for example.
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
// window is a QWindow instance
|
||||||
|
QObject::connect(
|
||||||
|
&app,
|
||||||
|
&SingleApplication::instanceStarted,
|
||||||
|
&window,
|
||||||
|
&QWindow::raise
|
||||||
|
);
|
||||||
|
```
|
||||||
|
|
||||||
|
Using `SingleApplication::instance()` is a neat way to get the
|
||||||
|
`SingleApplication` instance for binding to it's signals anywhere in your
|
||||||
|
program.
|
||||||
|
|
||||||
|
__Note:__ On Windows the ability to bring the application windows to the
|
||||||
|
foreground is restricted. See [Windows specific implementations](Windows.md)
|
||||||
|
for a workaround and an example implementation.
|
||||||
|
|
||||||
|
|
||||||
|
Secondary Instances
|
||||||
|
-------------------
|
||||||
|
|
||||||
|
If you want to be able to launch additional Secondary Instances (not related to
|
||||||
|
your Primary Instance) you have to enable that with the third parameter of the
|
||||||
|
`SingleApplication` constructor. The default is `false` meaning no Secondary
|
||||||
|
Instances. Here is an example of how you would start a Secondary Instance send
|
||||||
|
a message with the command line arguments to the primary instance and then shut
|
||||||
|
down.
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
int main(int argc, char *argv[])
|
||||||
|
{
|
||||||
|
SingleApplication app( argc, argv, true );
|
||||||
|
|
||||||
|
if( app.isSecondary() ) {
|
||||||
|
app.sendMessage( app.arguments().join(' ')).toUtf8() );
|
||||||
|
app.exit( 0 );
|
||||||
|
}
|
||||||
|
|
||||||
|
return app.exec();
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
*__Note:__ A secondary instance won't cause the emission of the
|
||||||
|
`instanceStarted()` signal by default. See `SingleApplication::Mode` for more
|
||||||
|
details.*
|
||||||
|
|
||||||
|
You can check whether your instance is a primary or secondary with the following
|
||||||
|
methods:
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
app.isPrimary();
|
||||||
|
// or
|
||||||
|
app.isSecondary();
|
||||||
|
```
|
||||||
|
|
||||||
|
*__Note:__ If your Primary Instance is terminated a newly launched instance
|
||||||
|
will replace the Primary one even if the Secondary flag has been set.*
|
||||||
|
|
||||||
|
API
|
||||||
|
---
|
||||||
|
|
||||||
|
### Members
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary = false, Options options = Mode::User, int timeout = 100 )
|
||||||
|
```
|
||||||
|
|
||||||
|
Depending on whether `allowSecondary` is set, this constructor may terminate
|
||||||
|
your app if there is already a primary instance running. Additional `Options`
|
||||||
|
can be specified to set whether the SingleApplication block should work
|
||||||
|
user-wide or system-wide. Additionally the `Mode::SecondaryNotification` may be
|
||||||
|
used to notify the primary instance whenever a secondary instance had been
|
||||||
|
started (disabled by default). `timeout` specifies the maximum time in
|
||||||
|
milliseconds to wait for blocking operations.
|
||||||
|
|
||||||
|
*__Note:__ `argc` and `argv` may be changed as Qt removes arguments that it
|
||||||
|
recognizes.*
|
||||||
|
|
||||||
|
*__Note:__ `Mode::SecondaryNotification` only works if set on both the primary
|
||||||
|
and the secondary instance.*
|
||||||
|
|
||||||
|
*__Note:__ Operating system can restrict the shared memory blocks to the same
|
||||||
|
user, in which case the User/System modes will have no effect and the block will
|
||||||
|
be user wide.*
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
bool SingleApplication::sendMessage( QByteArray message, int timeout = 100 )
|
||||||
|
```
|
||||||
|
|
||||||
|
Sends `message` to the Primary Instance. Uses `timeout` as a the maximum timeout
|
||||||
|
in milliseconds for blocking functions
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
bool SingleApplication::isPrimary()
|
||||||
|
```
|
||||||
|
|
||||||
|
Returns if the instance is the primary instance.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
bool SingleApplication::isSecondary()
|
||||||
|
```
|
||||||
|
Returns if the instance is a secondary instance.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
quint32 SingleApplication::instanceId()
|
||||||
|
```
|
||||||
|
|
||||||
|
Returns a unique identifier for the current instance.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
qint64 SingleApplication::primaryPid()
|
||||||
|
```
|
||||||
|
|
||||||
|
Returns the process ID (PID) of the primary instance.
|
||||||
|
|
||||||
|
### Signals
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
void SingleApplication::instanceStarted()
|
||||||
|
```
|
||||||
|
|
||||||
|
Triggered whenever a new instance had been started, except for secondary
|
||||||
|
instances if the `Mode::SecondaryNotification` flag is not specified.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
void SingleApplication::receivedMessage( quint32 instanceId, QByteArray message )
|
||||||
|
```
|
||||||
|
|
||||||
|
Triggered whenever there is a message received from a secondary instance.
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
### Flags
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
enum SingleApplication::Mode
|
||||||
|
```
|
||||||
|
|
||||||
|
* `Mode::User` - The SingleApplication block should apply user wide. This adds
|
||||||
|
user specific data to the key used for the shared memory and server name.
|
||||||
|
This is the default functionality.
|
||||||
|
* `Mode::System` – The SingleApplication block applies system-wide.
|
||||||
|
* `Mode::SecondaryNotification` – Whether to trigger `instanceStarted()` even
|
||||||
|
whenever secondary instances are started.
|
||||||
|
* `Mode::ExcludeAppPath` – Excludes the application path from the server name
|
||||||
|
(and memory block) hash.
|
||||||
|
* `Mode::ExcludeAppVersion` – Excludes the application version from the server
|
||||||
|
name (and memory block) hash.
|
||||||
|
|
||||||
|
*__Note:__ `Mode::SecondaryNotification` only works if set on both the primary
|
||||||
|
and the secondary instance.*
|
||||||
|
|
||||||
|
*__Note:__ Operating system can restrict the shared memory blocks to the same
|
||||||
|
user, in which case the User/System modes will have no effect and the block will
|
||||||
|
be user wide.*
|
||||||
|
|
||||||
|
---
|
||||||
|
|
||||||
|
Versioning
|
||||||
|
----------
|
||||||
|
|
||||||
|
Each major version introduces either very significant changes or is not
|
||||||
|
backwards compatible with the previous version. Minor versions only add
|
||||||
|
additional features, bug fixes or performance improvements and are backwards
|
||||||
|
compatible with the previous release. See [`CHANGELOG.md`](CHANGELOG.md) for
|
||||||
|
more details.
|
||||||
|
|
||||||
|
Implementation
|
||||||
|
--------------
|
||||||
|
|
||||||
|
The library is implemented with a QSharedMemory block which is thread safe and
|
||||||
|
guarantees a race condition will not occur. It also uses a QLocalSocket to
|
||||||
|
notify the main process that a new instance had been spawned and thus invoke the
|
||||||
|
`instanceStarted()` signal and for messaging the primary instance.
|
||||||
|
|
||||||
|
Additionally the library can recover from being forcefully killed on *nix
|
||||||
|
systems and will reset the memory block given that there are no other
|
||||||
|
instances running.
|
||||||
|
|
||||||
|
License
|
||||||
|
-------
|
||||||
|
This library and it's supporting documentation are released under
|
||||||
|
`The MIT License (MIT)` with the exception of the Qt calculator examples which
|
||||||
|
is distributed under the BSD license.
|
||||||
46
third_party/SingleApplication-3.0.19/Windows.md
vendored
Normal file
46
third_party/SingleApplication-3.0.19/Windows.md
vendored
Normal file
|
|
@ -0,0 +1,46 @@
|
||||||
|
Windows Specific Implementations
|
||||||
|
================================
|
||||||
|
|
||||||
|
Setting the foreground window
|
||||||
|
-----------------------------
|
||||||
|
|
||||||
|
In the `instanceStarted()` example in the `README` we demonstrated how an
|
||||||
|
application can bring it's primary instance window whenever a second copy
|
||||||
|
of the application is started.
|
||||||
|
|
||||||
|
On Windows the ability to bring the application windows to the foreground is
|
||||||
|
restricted, see [`AllowSetForegroundWindow()`][AllowSetForegroundWindow] for more
|
||||||
|
details.
|
||||||
|
|
||||||
|
The background process (the primary instance) can bring its windows to the
|
||||||
|
foreground if it is allowed by the current foreground process (the secondary
|
||||||
|
instance). To bypass this `SingleApplication` must be initialized with the
|
||||||
|
`allowSecondary` parameter set to `true` and the `options` parameter must
|
||||||
|
include `Mode::SecondaryNotification`, See `SingleApplication::Mode` for more
|
||||||
|
details.
|
||||||
|
|
||||||
|
Here is an example:
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
if( app.isSecondary() ) {
|
||||||
|
// This API requires LIBS += User32.lib to be added to the project
|
||||||
|
AllowSetForegroundWindow( DWORD( app.primaryPid() ) );
|
||||||
|
}
|
||||||
|
|
||||||
|
if( app.isPrimary() ) {
|
||||||
|
QObject::connect(
|
||||||
|
&app,
|
||||||
|
&SingleApplication::instanceStarted,
|
||||||
|
this,
|
||||||
|
&App::instanceStarted
|
||||||
|
);
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
```cpp
|
||||||
|
void App::instanceStarted() {
|
||||||
|
QApplication::setActiveWindow( [window/widget to set to the foreground] );
|
||||||
|
}
|
||||||
|
```
|
||||||
|
|
||||||
|
[AllowSetForegroundWindow]: https://msdn.microsoft.com/en-us/library/windows/desktop/ms632668.aspx
|
||||||
189
third_party/SingleApplication-3.0.19/singleapplication.cpp
vendored
Normal file
189
third_party/SingleApplication-3.0.19/singleapplication.cpp
vendored
Normal file
|
|
@ -0,0 +1,189 @@
|
||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2018
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
#include <QtCore/QElapsedTimer>
|
||||||
|
#include <QtCore/QThread>
|
||||||
|
#include <QtCore/QByteArray>
|
||||||
|
#include <QtCore/QSharedMemory>
|
||||||
|
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
|
||||||
|
#include <QtCore/QRandomGenerator>
|
||||||
|
#else
|
||||||
|
#include <QtCore/QDateTime>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include "singleapplication.h"
|
||||||
|
#include "singleapplication_p.h"
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Constructor. Checks and fires up LocalServer or closes the program
|
||||||
|
* if another instance already exists
|
||||||
|
* @param argc
|
||||||
|
* @param argv
|
||||||
|
* @param {bool} allowSecondaryInstances
|
||||||
|
*/
|
||||||
|
SingleApplication::SingleApplication( int &argc, char *argv[], bool allowSecondary, Options options, int timeout )
|
||||||
|
: app_t( argc, argv ), d_ptr( new SingleApplicationPrivate( this ) )
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
|
||||||
|
#if defined(Q_OS_ANDROID) || defined(Q_OS_IOS)
|
||||||
|
// On Android and iOS since the library is not supported fallback to
|
||||||
|
// standard QApplication behaviour by simply returning at this point.
|
||||||
|
qWarning() << "SingleApplication is not supported on Android and iOS systems.";
|
||||||
|
return;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// Store the current mode of the program
|
||||||
|
d->options = options;
|
||||||
|
|
||||||
|
// Generating an application ID used for identifying the shared memory
|
||||||
|
// block and QLocalServer
|
||||||
|
d->genBlockServerName();
|
||||||
|
|
||||||
|
#ifdef Q_OS_UNIX
|
||||||
|
// By explicitly attaching it and then deleting it we make sure that the
|
||||||
|
// memory is deleted even after the process has crashed on Unix.
|
||||||
|
d->memory = new QSharedMemory( d->blockServerName );
|
||||||
|
d->memory->attach();
|
||||||
|
delete d->memory;
|
||||||
|
#endif
|
||||||
|
// Guarantee thread safe behaviour with a shared memory block.
|
||||||
|
d->memory = new QSharedMemory( d->blockServerName );
|
||||||
|
|
||||||
|
// Create a shared memory block
|
||||||
|
if( d->memory->create( sizeof( InstancesInfo ) ) ) {
|
||||||
|
// Initialize the shared memory block
|
||||||
|
d->memory->lock();
|
||||||
|
d->initializeMemoryBlock();
|
||||||
|
d->memory->unlock();
|
||||||
|
} else {
|
||||||
|
// Attempt to attach to the memory segment
|
||||||
|
if( ! d->memory->attach() ) {
|
||||||
|
qCritical() << "SingleApplication: Unable to attach to shared memory block.";
|
||||||
|
qCritical() << d->memory->errorString();
|
||||||
|
delete d;
|
||||||
|
::exit( EXIT_FAILURE );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
InstancesInfo* inst = static_cast<InstancesInfo*>( d->memory->data() );
|
||||||
|
QElapsedTimer time;
|
||||||
|
time.start();
|
||||||
|
|
||||||
|
// Make sure the shared memory block is initialised and in consistent state
|
||||||
|
while( true ) {
|
||||||
|
d->memory->lock();
|
||||||
|
|
||||||
|
if( d->blockChecksum() == inst->checksum ) break;
|
||||||
|
|
||||||
|
if( time.elapsed() > 5000 ) {
|
||||||
|
qWarning() << "SingleApplication: Shared memory block has been in an inconsistent state from more than 5s. Assuming primary instance failure.";
|
||||||
|
d->initializeMemoryBlock();
|
||||||
|
}
|
||||||
|
|
||||||
|
d->memory->unlock();
|
||||||
|
|
||||||
|
// Random sleep here limits the probability of a collision between two racing apps
|
||||||
|
#if QT_VERSION >= QT_VERSION_CHECK(5, 10, 0)
|
||||||
|
QThread::sleep( QRandomGenerator::global()->bounded( 8u, 18u ) );
|
||||||
|
#else
|
||||||
|
qsrand( QDateTime::currentMSecsSinceEpoch() % std::numeric_limits<uint>::max() );
|
||||||
|
QThread::sleep( 8 + static_cast <unsigned long>( static_cast <float>( qrand() ) / RAND_MAX * 10 ) );
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
if( inst->primary == false) {
|
||||||
|
d->startPrimary();
|
||||||
|
d->memory->unlock();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check if another instance can be started
|
||||||
|
if( allowSecondary ) {
|
||||||
|
inst->secondary += 1;
|
||||||
|
inst->checksum = d->blockChecksum();
|
||||||
|
d->instanceNumber = inst->secondary;
|
||||||
|
d->startSecondary();
|
||||||
|
if( d->options & Mode::SecondaryNotification ) {
|
||||||
|
d->connectToPrimary( timeout, SingleApplicationPrivate::SecondaryInstance );
|
||||||
|
}
|
||||||
|
d->memory->unlock();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
d->memory->unlock();
|
||||||
|
|
||||||
|
d->connectToPrimary( timeout, SingleApplicationPrivate::NewInstance );
|
||||||
|
|
||||||
|
delete d;
|
||||||
|
|
||||||
|
::exit( EXIT_SUCCESS );
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Destructor
|
||||||
|
*/
|
||||||
|
SingleApplication::~SingleApplication()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
delete d;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool SingleApplication::isPrimary()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
return d->server != nullptr;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool SingleApplication::isSecondary()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
return d->server == nullptr;
|
||||||
|
}
|
||||||
|
|
||||||
|
quint32 SingleApplication::instanceId()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
return d->instanceNumber;
|
||||||
|
}
|
||||||
|
|
||||||
|
qint64 SingleApplication::primaryPid()
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
return d->primaryPid();
|
||||||
|
}
|
||||||
|
|
||||||
|
bool SingleApplication::sendMessage( QByteArray message, int timeout )
|
||||||
|
{
|
||||||
|
Q_D(SingleApplication);
|
||||||
|
|
||||||
|
// Nobody to connect to
|
||||||
|
if( isPrimary() ) return false;
|
||||||
|
|
||||||
|
// Make sure the socket is connected
|
||||||
|
d->connectToPrimary( timeout, SingleApplicationPrivate::Reconnect );
|
||||||
|
|
||||||
|
d->socket->write( message );
|
||||||
|
bool dataWritten = d->socket->waitForBytesWritten( timeout );
|
||||||
|
d->socket->flush();
|
||||||
|
return dataWritten;
|
||||||
|
}
|
||||||
135
third_party/SingleApplication-3.0.19/singleapplication.h
vendored
Normal file
135
third_party/SingleApplication-3.0.19/singleapplication.h
vendored
Normal file
|
|
@ -0,0 +1,135 @@
|
||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2018
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
#ifndef SINGLE_APPLICATION_H
|
||||||
|
#define SINGLE_APPLICATION_H
|
||||||
|
|
||||||
|
#include <QtCore/QtGlobal>
|
||||||
|
#include <QtNetwork/QLocalSocket>
|
||||||
|
|
||||||
|
#ifndef QAPPLICATION_CLASS
|
||||||
|
#define QAPPLICATION_CLASS QCoreApplication
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#include QT_STRINGIFY(QAPPLICATION_CLASS)
|
||||||
|
|
||||||
|
class SingleApplicationPrivate;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief The SingleApplication class handles multiple instances of the same
|
||||||
|
* Application
|
||||||
|
* @see QCoreApplication
|
||||||
|
*/
|
||||||
|
class SingleApplication : public QAPPLICATION_CLASS
|
||||||
|
{
|
||||||
|
Q_OBJECT
|
||||||
|
|
||||||
|
typedef QAPPLICATION_CLASS app_t;
|
||||||
|
|
||||||
|
public:
|
||||||
|
/**
|
||||||
|
* @brief Mode of operation of SingleApplication.
|
||||||
|
* Whether the block should be user-wide or system-wide and whether the
|
||||||
|
* primary instance should be notified when a secondary instance had been
|
||||||
|
* started.
|
||||||
|
* @note Operating system can restrict the shared memory blocks to the same
|
||||||
|
* user, in which case the User/System modes will have no effect and the
|
||||||
|
* block will be user wide.
|
||||||
|
* @enum
|
||||||
|
*/
|
||||||
|
enum Mode {
|
||||||
|
User = 1 << 0,
|
||||||
|
System = 1 << 1,
|
||||||
|
SecondaryNotification = 1 << 2,
|
||||||
|
ExcludeAppVersion = 1 << 3,
|
||||||
|
ExcludeAppPath = 1 << 4
|
||||||
|
};
|
||||||
|
Q_DECLARE_FLAGS(Options, Mode)
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Intitializes a SingleApplication instance with argc command line
|
||||||
|
* arguments in argv
|
||||||
|
* @arg {int &} argc - Number of arguments in argv
|
||||||
|
* @arg {const char *[]} argv - Supplied command line arguments
|
||||||
|
* @arg {bool} allowSecondary - Whether to start the instance as secondary
|
||||||
|
* if there is already a primary instance.
|
||||||
|
* @arg {Mode} mode - Whether for the SingleApplication block to be applied
|
||||||
|
* User wide or System wide.
|
||||||
|
* @arg {int} timeout - Timeout to wait in milliseconds.
|
||||||
|
* @note argc and argv may be changed as Qt removes arguments that it
|
||||||
|
* recognizes
|
||||||
|
* @note Mode::SecondaryNotification only works if set on both the primary
|
||||||
|
* instance and the secondary instance.
|
||||||
|
* @note The timeout is just a hint for the maximum time of blocking
|
||||||
|
* operations. It does not guarantee that the SingleApplication
|
||||||
|
* initialisation will be completed in given time, though is a good hint.
|
||||||
|
* Usually 4*timeout would be the worst case (fail) scenario.
|
||||||
|
* @see See the corresponding QAPPLICATION_CLASS constructor for reference
|
||||||
|
*/
|
||||||
|
explicit SingleApplication( int &argc, char *argv[], bool allowSecondary = false, Options options = Mode::User, int timeout = 1000 );
|
||||||
|
~SingleApplication();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns if the instance is the primary instance
|
||||||
|
* @returns {bool}
|
||||||
|
*/
|
||||||
|
bool isPrimary();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns if the instance is a secondary instance
|
||||||
|
* @returns {bool}
|
||||||
|
*/
|
||||||
|
bool isSecondary();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns a unique identifier for the current instance
|
||||||
|
* @returns {qint32}
|
||||||
|
*/
|
||||||
|
quint32 instanceId();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Returns the process ID (PID) of the primary instance
|
||||||
|
* @returns {qint64}
|
||||||
|
*/
|
||||||
|
qint64 primaryPid();
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Sends a message to the primary instance. Returns true on success.
|
||||||
|
* @param {int} timeout - Timeout for connecting
|
||||||
|
* @returns {bool}
|
||||||
|
* @note sendMessage() will return false if invoked from the primary
|
||||||
|
* instance.
|
||||||
|
*/
|
||||||
|
bool sendMessage( QByteArray message, int timeout = 100 );
|
||||||
|
|
||||||
|
Q_SIGNALS:
|
||||||
|
void instanceStarted();
|
||||||
|
void receivedMessage( quint32 instanceId, QByteArray message );
|
||||||
|
|
||||||
|
private:
|
||||||
|
SingleApplicationPrivate *d_ptr;
|
||||||
|
Q_DECLARE_PRIVATE(SingleApplication)
|
||||||
|
};
|
||||||
|
|
||||||
|
Q_DECLARE_OPERATORS_FOR_FLAGS(SingleApplication::Options)
|
||||||
|
|
||||||
|
#endif // SINGLE_APPLICATION_H
|
||||||
405
third_party/SingleApplication-3.0.19/singleapplication_p.cpp
vendored
Normal file
405
third_party/SingleApplication-3.0.19/singleapplication_p.cpp
vendored
Normal file
|
|
@ -0,0 +1,405 @@
|
||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2018
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
//
|
||||||
|
// W A R N I N G !!!
|
||||||
|
// -----------------
|
||||||
|
//
|
||||||
|
// This file is not part of the SingleApplication API. It is used purely as an
|
||||||
|
// implementation detail. This header file may change from version to
|
||||||
|
// version without notice, or may even be removed.
|
||||||
|
//
|
||||||
|
|
||||||
|
#include <cstdlib>
|
||||||
|
#include <cstddef>
|
||||||
|
|
||||||
|
#include <QtCore/QDir>
|
||||||
|
#include <QtCore/QByteArray>
|
||||||
|
#include <QtCore/QDataStream>
|
||||||
|
#include <QtCore/QCryptographicHash>
|
||||||
|
#include <QtNetwork/QLocalServer>
|
||||||
|
#include <QtNetwork/QLocalSocket>
|
||||||
|
|
||||||
|
#include "singleapplication.h"
|
||||||
|
#include "singleapplication_p.h"
|
||||||
|
|
||||||
|
#ifdef Q_OS_UNIX
|
||||||
|
#include <unistd.h>
|
||||||
|
#include <sys/types.h>
|
||||||
|
#include <pwd.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
#ifdef Q_OS_WIN
|
||||||
|
#include <windows.h>
|
||||||
|
#include <lmcons.h>
|
||||||
|
#endif
|
||||||
|
|
||||||
|
SingleApplicationPrivate::SingleApplicationPrivate( SingleApplication *q_ptr )
|
||||||
|
: q_ptr( q_ptr )
|
||||||
|
{
|
||||||
|
server = nullptr;
|
||||||
|
socket = nullptr;
|
||||||
|
memory = nullptr;
|
||||||
|
instanceNumber = -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
SingleApplicationPrivate::~SingleApplicationPrivate()
|
||||||
|
{
|
||||||
|
if( socket != nullptr ) {
|
||||||
|
socket->close();
|
||||||
|
delete socket;
|
||||||
|
}
|
||||||
|
|
||||||
|
memory->lock();
|
||||||
|
InstancesInfo* inst = static_cast<InstancesInfo*>(memory->data());
|
||||||
|
if( server != nullptr ) {
|
||||||
|
server->close();
|
||||||
|
delete server;
|
||||||
|
inst->primary = false;
|
||||||
|
inst->primaryPid = -1;
|
||||||
|
inst->checksum = blockChecksum();
|
||||||
|
}
|
||||||
|
memory->unlock();
|
||||||
|
|
||||||
|
delete memory;
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::genBlockServerName()
|
||||||
|
{
|
||||||
|
QCryptographicHash appData( QCryptographicHash::Sha256 );
|
||||||
|
appData.addData( "SingleApplication", 17 );
|
||||||
|
appData.addData( SingleApplication::app_t::applicationName().toUtf8() );
|
||||||
|
appData.addData( SingleApplication::app_t::organizationName().toUtf8() );
|
||||||
|
appData.addData( SingleApplication::app_t::organizationDomain().toUtf8() );
|
||||||
|
|
||||||
|
if( ! (options & SingleApplication::Mode::ExcludeAppVersion) ) {
|
||||||
|
appData.addData( SingleApplication::app_t::applicationVersion().toUtf8() );
|
||||||
|
}
|
||||||
|
|
||||||
|
if( ! (options & SingleApplication::Mode::ExcludeAppPath) ) {
|
||||||
|
#ifdef Q_OS_WIN
|
||||||
|
appData.addData( SingleApplication::app_t::applicationFilePath().toLower().toUtf8() );
|
||||||
|
#else
|
||||||
|
appData.addData( SingleApplication::app_t::applicationFilePath().toUtf8() );
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
// User level block requires a user specific data in the hash
|
||||||
|
if( options & SingleApplication::Mode::User ) {
|
||||||
|
#ifdef Q_OS_WIN
|
||||||
|
wchar_t username [ UNLEN + 1 ];
|
||||||
|
// Specifies size of the buffer on input
|
||||||
|
DWORD usernameLength = UNLEN + 1;
|
||||||
|
if( GetUserNameW( username, &usernameLength ) ) {
|
||||||
|
appData.addData( QString::fromWCharArray(username).toUtf8() );
|
||||||
|
} else {
|
||||||
|
appData.addData( qgetenv("USERNAME") );
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
#ifdef Q_OS_UNIX
|
||||||
|
QByteArray username;
|
||||||
|
uid_t uid = geteuid();
|
||||||
|
struct passwd *pw = getpwuid(uid);
|
||||||
|
if( pw ) {
|
||||||
|
username = pw->pw_name;
|
||||||
|
}
|
||||||
|
if( username.isEmpty() ) {
|
||||||
|
username = qgetenv("USER");
|
||||||
|
}
|
||||||
|
appData.addData(username);
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
// Replace the backslash in RFC 2045 Base64 [a-zA-Z0-9+/=] to comply with
|
||||||
|
// server naming requirements.
|
||||||
|
blockServerName = appData.result().toBase64().replace("/", "_");
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::initializeMemoryBlock()
|
||||||
|
{
|
||||||
|
InstancesInfo* inst = static_cast<InstancesInfo*>( memory->data() );
|
||||||
|
inst->primary = false;
|
||||||
|
inst->secondary = 0;
|
||||||
|
inst->primaryPid = -1;
|
||||||
|
inst->checksum = blockChecksum();
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::startPrimary()
|
||||||
|
{
|
||||||
|
Q_Q(SingleApplication);
|
||||||
|
|
||||||
|
// Successful creation means that no main process exists
|
||||||
|
// So we start a QLocalServer to listen for connections
|
||||||
|
QLocalServer::removeServer( blockServerName );
|
||||||
|
server = new QLocalServer();
|
||||||
|
|
||||||
|
// Restrict access to the socket according to the
|
||||||
|
// SingleApplication::Mode::User flag on User level or no restrictions
|
||||||
|
if( options & SingleApplication::Mode::User ) {
|
||||||
|
server->setSocketOptions( QLocalServer::UserAccessOption );
|
||||||
|
} else {
|
||||||
|
server->setSocketOptions( QLocalServer::WorldAccessOption );
|
||||||
|
}
|
||||||
|
|
||||||
|
server->listen( blockServerName );
|
||||||
|
QObject::connect(
|
||||||
|
server,
|
||||||
|
&QLocalServer::newConnection,
|
||||||
|
this,
|
||||||
|
&SingleApplicationPrivate::slotConnectionEstablished
|
||||||
|
);
|
||||||
|
|
||||||
|
// Reset the number of connections
|
||||||
|
InstancesInfo* inst = static_cast <InstancesInfo*>( memory->data() );
|
||||||
|
|
||||||
|
inst->primary = true;
|
||||||
|
inst->primaryPid = q->applicationPid();
|
||||||
|
inst->checksum = blockChecksum();
|
||||||
|
|
||||||
|
instanceNumber = 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::startSecondary()
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::connectToPrimary( int msecs, ConnectionType connectionType )
|
||||||
|
{
|
||||||
|
// Connect to the Local Server of the Primary Instance if not already
|
||||||
|
// connected.
|
||||||
|
if( socket == nullptr ) {
|
||||||
|
socket = new QLocalSocket();
|
||||||
|
}
|
||||||
|
|
||||||
|
// If already connected - we are done;
|
||||||
|
if( socket->state() == QLocalSocket::ConnectedState )
|
||||||
|
return;
|
||||||
|
|
||||||
|
// If not connect
|
||||||
|
if( socket->state() == QLocalSocket::UnconnectedState ||
|
||||||
|
socket->state() == QLocalSocket::ClosingState ) {
|
||||||
|
socket->connectToServer( blockServerName );
|
||||||
|
}
|
||||||
|
|
||||||
|
// Wait for being connected
|
||||||
|
if( socket->state() == QLocalSocket::ConnectingState ) {
|
||||||
|
socket->waitForConnected( msecs );
|
||||||
|
}
|
||||||
|
|
||||||
|
// Initialisation message according to the SingleApplication protocol
|
||||||
|
if( socket->state() == QLocalSocket::ConnectedState ) {
|
||||||
|
// Notify the parent that a new instance had been started;
|
||||||
|
QByteArray initMsg;
|
||||||
|
QDataStream writeStream(&initMsg, QIODevice::WriteOnly);
|
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
|
||||||
|
writeStream.setVersion(QDataStream::Qt_5_6);
|
||||||
|
#endif
|
||||||
|
|
||||||
|
writeStream << blockServerName.toLatin1();
|
||||||
|
writeStream << static_cast<quint8>(connectionType);
|
||||||
|
writeStream << instanceNumber;
|
||||||
|
quint16 checksum = qChecksum(initMsg.constData(), static_cast<quint32>(initMsg.length()));
|
||||||
|
writeStream << checksum;
|
||||||
|
|
||||||
|
// The header indicates the message length that follows
|
||||||
|
QByteArray header;
|
||||||
|
QDataStream headerStream(&header, QIODevice::WriteOnly);
|
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
|
||||||
|
headerStream.setVersion(QDataStream::Qt_5_6);
|
||||||
|
#endif
|
||||||
|
headerStream << static_cast <quint64>( initMsg.length() );
|
||||||
|
|
||||||
|
socket->write( header );
|
||||||
|
socket->write( initMsg );
|
||||||
|
socket->flush();
|
||||||
|
socket->waitForBytesWritten( msecs );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
quint16 SingleApplicationPrivate::blockChecksum()
|
||||||
|
{
|
||||||
|
return qChecksum(
|
||||||
|
static_cast <const char *>( memory->data() ),
|
||||||
|
offsetof( InstancesInfo, checksum )
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
qint64 SingleApplicationPrivate::primaryPid()
|
||||||
|
{
|
||||||
|
qint64 pid;
|
||||||
|
|
||||||
|
memory->lock();
|
||||||
|
InstancesInfo* inst = static_cast<InstancesInfo*>( memory->data() );
|
||||||
|
pid = inst->primaryPid;
|
||||||
|
memory->unlock();
|
||||||
|
|
||||||
|
return pid;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @brief Executed when a connection has been made to the LocalServer
|
||||||
|
*/
|
||||||
|
void SingleApplicationPrivate::slotConnectionEstablished()
|
||||||
|
{
|
||||||
|
QLocalSocket *nextConnSocket = server->nextPendingConnection();
|
||||||
|
connectionMap.insert(nextConnSocket, ConnectionInfo());
|
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::aboutToClose,
|
||||||
|
[nextConnSocket, this]() {
|
||||||
|
auto &info = connectionMap[nextConnSocket];
|
||||||
|
Q_EMIT this->slotClientConnectionClosed( nextConnSocket, info.instanceId );
|
||||||
|
}
|
||||||
|
);
|
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::disconnected,
|
||||||
|
[nextConnSocket, this](){
|
||||||
|
connectionMap.remove(nextConnSocket);
|
||||||
|
nextConnSocket->deleteLater();
|
||||||
|
}
|
||||||
|
);
|
||||||
|
|
||||||
|
QObject::connect(nextConnSocket, &QLocalSocket::readyRead,
|
||||||
|
[nextConnSocket, this]() {
|
||||||
|
auto &info = connectionMap[nextConnSocket];
|
||||||
|
switch(info.stage) {
|
||||||
|
case StageHeader:
|
||||||
|
readInitMessageHeader(nextConnSocket);
|
||||||
|
break;
|
||||||
|
case StageBody:
|
||||||
|
readInitMessageBody(nextConnSocket);
|
||||||
|
break;
|
||||||
|
case StageConnected:
|
||||||
|
Q_EMIT this->slotDataAvailable( nextConnSocket, info.instanceId );
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
};
|
||||||
|
}
|
||||||
|
);
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::readInitMessageHeader( QLocalSocket *sock )
|
||||||
|
{
|
||||||
|
if (!connectionMap.contains( sock )) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if( sock->bytesAvailable() < ( qint64 )sizeof( quint64 ) ) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
QDataStream headerStream( sock );
|
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
|
||||||
|
headerStream.setVersion( QDataStream::Qt_5_6 );
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// Read the header to know the message length
|
||||||
|
quint64 msgLen = 0;
|
||||||
|
headerStream >> msgLen;
|
||||||
|
ConnectionInfo &info = connectionMap[sock];
|
||||||
|
info.stage = StageBody;
|
||||||
|
info.msgLen = msgLen;
|
||||||
|
|
||||||
|
if ( sock->bytesAvailable() >= (qint64) msgLen ) {
|
||||||
|
readInitMessageBody( sock );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::readInitMessageBody( QLocalSocket *sock )
|
||||||
|
{
|
||||||
|
Q_Q(SingleApplication);
|
||||||
|
|
||||||
|
if (!connectionMap.contains( sock )) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
ConnectionInfo &info = connectionMap[sock];
|
||||||
|
if( sock->bytesAvailable() < ( qint64 )info.msgLen ) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Read the message body
|
||||||
|
QByteArray msgBytes = sock->read(info.msgLen);
|
||||||
|
QDataStream readStream(msgBytes);
|
||||||
|
|
||||||
|
#if (QT_VERSION >= QT_VERSION_CHECK(5, 6, 0))
|
||||||
|
readStream.setVersion( QDataStream::Qt_5_6 );
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// server name
|
||||||
|
QByteArray latin1Name;
|
||||||
|
readStream >> latin1Name;
|
||||||
|
|
||||||
|
// connection type
|
||||||
|
ConnectionType connectionType = InvalidConnection;
|
||||||
|
quint8 connTypeVal = InvalidConnection;
|
||||||
|
readStream >> connTypeVal;
|
||||||
|
connectionType = static_cast <ConnectionType>( connTypeVal );
|
||||||
|
|
||||||
|
// instance id
|
||||||
|
quint32 instanceId = 0;
|
||||||
|
readStream >> instanceId;
|
||||||
|
|
||||||
|
// checksum
|
||||||
|
quint16 msgChecksum = 0;
|
||||||
|
readStream >> msgChecksum;
|
||||||
|
|
||||||
|
const quint16 actualChecksum = qChecksum( msgBytes.constData(), static_cast<quint32>( msgBytes.length() - sizeof( quint16 ) ) );
|
||||||
|
|
||||||
|
bool isValid = readStream.status() == QDataStream::Ok &&
|
||||||
|
QLatin1String(latin1Name) == blockServerName &&
|
||||||
|
msgChecksum == actualChecksum;
|
||||||
|
|
||||||
|
if( !isValid ) {
|
||||||
|
sock->close();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
info.instanceId = instanceId;
|
||||||
|
info.stage = StageConnected;
|
||||||
|
|
||||||
|
if( connectionType == NewInstance ||
|
||||||
|
( connectionType == SecondaryInstance &&
|
||||||
|
options & SingleApplication::Mode::SecondaryNotification ) )
|
||||||
|
{
|
||||||
|
Q_EMIT q->instanceStarted();
|
||||||
|
}
|
||||||
|
|
||||||
|
if (sock->bytesAvailable() > 0) {
|
||||||
|
Q_EMIT this->slotDataAvailable( sock, instanceId );
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::slotDataAvailable( QLocalSocket *dataSocket, quint32 instanceId )
|
||||||
|
{
|
||||||
|
Q_Q(SingleApplication);
|
||||||
|
Q_EMIT q->receivedMessage( instanceId, dataSocket->readAll() );
|
||||||
|
}
|
||||||
|
|
||||||
|
void SingleApplicationPrivate::slotClientConnectionClosed( QLocalSocket *closedSocket, quint32 instanceId )
|
||||||
|
{
|
||||||
|
if( closedSocket->bytesAvailable() > 0 )
|
||||||
|
Q_EMIT slotDataAvailable( closedSocket, instanceId );
|
||||||
|
}
|
||||||
99
third_party/SingleApplication-3.0.19/singleapplication_p.h
vendored
Normal file
99
third_party/SingleApplication-3.0.19/singleapplication_p.h
vendored
Normal file
|
|
@ -0,0 +1,99 @@
|
||||||
|
// The MIT License (MIT)
|
||||||
|
//
|
||||||
|
// Copyright (c) Itay Grudev 2015 - 2016
|
||||||
|
//
|
||||||
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||||
|
// of this software and associated documentation files (the "Software"), to deal
|
||||||
|
// in the Software without restriction, including without limitation the rights
|
||||||
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||||
|
// copies of the Software, and to permit persons to whom the Software is
|
||||||
|
// furnished to do so, subject to the following conditions:
|
||||||
|
//
|
||||||
|
// The above copyright notice and this permission notice shall be included in
|
||||||
|
// all copies or substantial portions of the Software.
|
||||||
|
//
|
||||||
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||||
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||||
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||||
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||||
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||||
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||||
|
// THE SOFTWARE.
|
||||||
|
|
||||||
|
//
|
||||||
|
// W A R N I N G !!!
|
||||||
|
// -----------------
|
||||||
|
//
|
||||||
|
// This file is not part of the SingleApplication API. It is used purely as an
|
||||||
|
// implementation detail. This header file may change from version to
|
||||||
|
// version without notice, or may even be removed.
|
||||||
|
//
|
||||||
|
|
||||||
|
#ifndef SINGLEAPPLICATION_P_H
|
||||||
|
#define SINGLEAPPLICATION_P_H
|
||||||
|
|
||||||
|
#include <QtCore/QSharedMemory>
|
||||||
|
#include <QtNetwork/QLocalServer>
|
||||||
|
#include <QtNetwork/QLocalSocket>
|
||||||
|
#include "singleapplication.h"
|
||||||
|
|
||||||
|
struct InstancesInfo {
|
||||||
|
bool primary;
|
||||||
|
quint32 secondary;
|
||||||
|
qint64 primaryPid;
|
||||||
|
quint16 checksum;
|
||||||
|
};
|
||||||
|
|
||||||
|
struct ConnectionInfo {
|
||||||
|
explicit ConnectionInfo() :
|
||||||
|
msgLen(0), instanceId(0), stage(0) {}
|
||||||
|
qint64 msgLen;
|
||||||
|
quint32 instanceId;
|
||||||
|
quint8 stage;
|
||||||
|
};
|
||||||
|
|
||||||
|
class SingleApplicationPrivate : public QObject {
|
||||||
|
Q_OBJECT
|
||||||
|
public:
|
||||||
|
enum ConnectionType : quint8 {
|
||||||
|
InvalidConnection = 0,
|
||||||
|
NewInstance = 1,
|
||||||
|
SecondaryInstance = 2,
|
||||||
|
Reconnect = 3
|
||||||
|
};
|
||||||
|
enum ConnectionStage : quint8 {
|
||||||
|
StageHeader = 0,
|
||||||
|
StageBody = 1,
|
||||||
|
StageConnected = 2,
|
||||||
|
};
|
||||||
|
Q_DECLARE_PUBLIC(SingleApplication)
|
||||||
|
|
||||||
|
SingleApplicationPrivate( SingleApplication *q_ptr );
|
||||||
|
~SingleApplicationPrivate();
|
||||||
|
|
||||||
|
void genBlockServerName();
|
||||||
|
void initializeMemoryBlock();
|
||||||
|
void startPrimary();
|
||||||
|
void startSecondary();
|
||||||
|
void connectToPrimary(int msecs, ConnectionType connectionType );
|
||||||
|
quint16 blockChecksum();
|
||||||
|
qint64 primaryPid();
|
||||||
|
void readInitMessageHeader(QLocalSocket *socket);
|
||||||
|
void readInitMessageBody(QLocalSocket *socket);
|
||||||
|
|
||||||
|
SingleApplication *q_ptr;
|
||||||
|
QSharedMemory *memory;
|
||||||
|
QLocalSocket *socket;
|
||||||
|
QLocalServer *server;
|
||||||
|
quint32 instanceNumber;
|
||||||
|
QString blockServerName;
|
||||||
|
SingleApplication::Options options;
|
||||||
|
QMap<QLocalSocket*, ConnectionInfo> connectionMap;
|
||||||
|
|
||||||
|
public Q_SLOTS:
|
||||||
|
void slotConnectionEstablished();
|
||||||
|
void slotDataAvailable( QLocalSocket*, quint32 );
|
||||||
|
void slotClientConnectionClosed( QLocalSocket*, quint32 );
|
||||||
|
};
|
||||||
|
|
||||||
|
#endif // SINGLEAPPLICATION_P_H
|
||||||
Loading…
Reference in a new issue