mirror of
https://github.com/fergalmoran/flameshot.git
synced 2026-01-06 17:13:58 +00:00
updated qtsingleapplication to v3.1.5
This commit is contained in:
Jeremy Borgman
committed by
borgmanJeremy
borgmanJeremy
parent
a0156be7b6
commit
8211b6aff0
572
external/singleapplication/singleapplication.cpp
vendored
572
external/singleapplication/singleapplication.cpp
vendored
@@ -1,6 +1,6 @@
|
||||
// The MIT License (MIT)
|
||||
//
|
||||
// Copyright (c) Itay Grudev 2015 - 2016
|
||||
// Copyright (c) Itay Grudev 2015 - 2020
|
||||
//
|
||||
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
// of this software and associated documentation files (the "Software"), to deal
|
||||
@@ -20,358 +20,21 @@
|
||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
// THE SOFTWARE.
|
||||
|
||||
#include <cstdlib>
|
||||
|
||||
#include <QMessageBox>
|
||||
#include <QTimer>
|
||||
#include <QtCore/QByteArray>
|
||||
#include <QtCore/QCryptographicHash>
|
||||
#include <QtCore/QDataStream>
|
||||
#include <QtCore/QDir>
|
||||
#include <QtCore/QProcess>
|
||||
#include <QtCore/QSemaphore>
|
||||
#include <QtCore/QElapsedTimer>
|
||||
#include <QtCore/QSharedMemory>
|
||||
#include <QtCore/QStandardPaths>
|
||||
#include <QtNetwork/QLocalServer>
|
||||
#include <QtNetwork/QLocalSocket>
|
||||
|
||||
#ifdef Q_OS_UNIX
|
||||
#include <signal.h>
|
||||
#include <unistd.h>
|
||||
#endif
|
||||
|
||||
#ifdef Q_OS_WIN
|
||||
#include <lmcons.h>
|
||||
#include <windows.h>
|
||||
#endif
|
||||
|
||||
#include "singleapplication.h"
|
||||
#include "singleapplication_p.h"
|
||||
|
||||
SingleApplicationPrivate::SingleApplicationPrivate(SingleApplication* q_ptr)
|
||||
: q_ptr(q_ptr)
|
||||
{
|
||||
server = nullptr;
|
||||
socket = nullptr;
|
||||
}
|
||||
|
||||
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;
|
||||
}
|
||||
memory->unlock();
|
||||
|
||||
delete memory;
|
||||
}
|
||||
|
||||
void SingleApplicationPrivate::genBlockServerName(int timeout)
|
||||
{
|
||||
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
|
||||
Q_UNUSED(timeout);
|
||||
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(
|
||||
QStandardPaths::standardLocations(QStandardPaths::HomeLocation)
|
||||
.join("")
|
||||
.toUtf8());
|
||||
}
|
||||
#endif
|
||||
#ifdef Q_OS_UNIX
|
||||
QProcess process;
|
||||
process.start(QStringLiteral("whoami"), QStringList{});
|
||||
|
||||
if (process.waitForFinished(timeout) &&
|
||||
process.exitCode() == QProcess::NormalExit) {
|
||||
appData.addData(process.readLine());
|
||||
} else {
|
||||
appData.addData(QDir(QStandardPaths::standardLocations(
|
||||
QStandardPaths::HomeLocation)
|
||||
.first())
|
||||
.absolutePath()
|
||||
.toUtf8());
|
||||
}
|
||||
#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::startPrimary(bool resetMemory)
|
||||
{
|
||||
Q_Q(SingleApplication);
|
||||
|
||||
#ifdef Q_OS_UNIX
|
||||
// Handle any further termination signals to ensure the
|
||||
// QSharedMemory block is deleted even if the process crashes
|
||||
crashHandler();
|
||||
#endif
|
||||
// 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
|
||||
memory->lock();
|
||||
InstancesInfo* inst = static_cast<InstancesInfo*>(memory->data());
|
||||
|
||||
if (resetMemory) {
|
||||
inst->secondary = 0;
|
||||
}
|
||||
|
||||
inst->primary = true;
|
||||
inst->primaryPid = q->applicationPid();
|
||||
|
||||
memory->unlock();
|
||||
|
||||
instanceNumber = 0;
|
||||
}
|
||||
|
||||
void SingleApplicationPrivate::startSecondary()
|
||||
{
|
||||
#ifdef Q_OS_UNIX
|
||||
// Handle any further termination signals to ensure the
|
||||
// QSharedMemory block is deleted even if the process crashes
|
||||
crashHandler();
|
||||
#endif
|
||||
}
|
||||
|
||||
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);
|
||||
writeStream.setVersion(QDataStream::Qt_5_2);
|
||||
writeStream << blockServerName.toLatin1();
|
||||
writeStream << static_cast<quint8>(connectionType);
|
||||
writeStream << instanceNumber;
|
||||
quint16 checksum = qChecksum(initMsg.constData(),
|
||||
static_cast<quint32>(initMsg.length()));
|
||||
writeStream << checksum;
|
||||
|
||||
socket->write(initMsg);
|
||||
socket->flush();
|
||||
socket->waitForBytesWritten(msecs);
|
||||
}
|
||||
}
|
||||
|
||||
qint64 SingleApplicationPrivate::primaryPid()
|
||||
{
|
||||
qint64 pid;
|
||||
|
||||
memory->lock();
|
||||
InstancesInfo* inst = static_cast<InstancesInfo*>(memory->data());
|
||||
pid = inst->primaryPid;
|
||||
memory->unlock();
|
||||
|
||||
return pid;
|
||||
}
|
||||
|
||||
#ifdef Q_OS_UNIX
|
||||
void SingleApplicationPrivate::crashHandler()
|
||||
{
|
||||
// Handle any further termination signals to ensure the
|
||||
// QSharedMemory block is deleted even if the process crashes
|
||||
signal(SIGHUP, SingleApplicationPrivate::terminate); // 1
|
||||
signal(SIGINT, SingleApplicationPrivate::terminate); // 2
|
||||
signal(SIGQUIT, SingleApplicationPrivate::terminate); // 3
|
||||
signal(SIGILL, SingleApplicationPrivate::terminate); // 4
|
||||
signal(SIGABRT, SingleApplicationPrivate::terminate); // 6
|
||||
signal(SIGFPE, SingleApplicationPrivate::terminate); // 8
|
||||
signal(SIGBUS, SingleApplicationPrivate::terminate); // 10
|
||||
signal(SIGSEGV, SingleApplicationPrivate::terminate); // 11
|
||||
signal(SIGSYS, SingleApplicationPrivate::terminate); // 12
|
||||
signal(SIGPIPE, SingleApplicationPrivate::terminate); // 13
|
||||
signal(SIGALRM, SingleApplicationPrivate::terminate); // 14
|
||||
signal(SIGTERM, SingleApplicationPrivate::terminate); // 15
|
||||
signal(SIGXCPU, SingleApplicationPrivate::terminate); // 24
|
||||
signal(SIGXFSZ, SingleApplicationPrivate::terminate); // 25
|
||||
}
|
||||
|
||||
void SingleApplicationPrivate::terminate(int signum)
|
||||
{
|
||||
delete ((SingleApplication*)QCoreApplication::instance())->d_ptr;
|
||||
::exit(128 + signum);
|
||||
}
|
||||
#endif
|
||||
|
||||
/**
|
||||
* @brief Executed when a connection has been made to the LocalServer
|
||||
*/
|
||||
void SingleApplicationPrivate::slotConnectionEstablished()
|
||||
{
|
||||
Q_Q(SingleApplication);
|
||||
|
||||
QLocalSocket* nextConnSocket = server->nextPendingConnection();
|
||||
|
||||
quint32 instanceId = 0;
|
||||
ConnectionType connectionType = InvalidConnection;
|
||||
if (nextConnSocket->waitForReadyRead(100)) {
|
||||
// read all data from message in same order/format as written
|
||||
QByteArray msgBytes =
|
||||
nextConnSocket->read(nextConnSocket->bytesAvailable() -
|
||||
static_cast<qint64>(sizeof(quint16)));
|
||||
QByteArray checksumBytes = nextConnSocket->read(sizeof(quint16));
|
||||
QDataStream readStream(msgBytes);
|
||||
readStream.setVersion(QDataStream::Qt_5_2);
|
||||
|
||||
// server name
|
||||
QByteArray latin1Name;
|
||||
readStream >> latin1Name;
|
||||
// connectioon type
|
||||
quint8 connType = InvalidConnection;
|
||||
readStream >> connType;
|
||||
connectionType = static_cast<ConnectionType>(connType);
|
||||
// instance id
|
||||
readStream >> instanceId;
|
||||
// checksum
|
||||
quint16 msgChecksum = 0;
|
||||
QDataStream checksumStream(checksumBytes);
|
||||
checksumStream.setVersion(QDataStream::Qt_5_2);
|
||||
checksumStream >> msgChecksum;
|
||||
|
||||
const quint16 actualChecksum = qChecksum(
|
||||
msgBytes.constData(), static_cast<quint32>(msgBytes.length()));
|
||||
|
||||
if (readStream.status() != QDataStream::Ok ||
|
||||
QLatin1String(latin1Name) != blockServerName ||
|
||||
msgChecksum != actualChecksum) {
|
||||
connectionType = InvalidConnection;
|
||||
}
|
||||
}
|
||||
|
||||
if (connectionType == InvalidConnection) {
|
||||
nextConnSocket->close();
|
||||
delete nextConnSocket;
|
||||
return;
|
||||
}
|
||||
|
||||
QObject::connect(nextConnSocket,
|
||||
&QLocalSocket::aboutToClose,
|
||||
this,
|
||||
[nextConnSocket, instanceId, this]() {
|
||||
emit this->slotClientConnectionClosed(nextConnSocket,
|
||||
instanceId);
|
||||
});
|
||||
|
||||
QObject::connect(nextConnSocket,
|
||||
&QLocalSocket::readyRead,
|
||||
this,
|
||||
[nextConnSocket, instanceId, this]() {
|
||||
emit this->slotDataAvailable(nextConnSocket,
|
||||
instanceId);
|
||||
});
|
||||
|
||||
if (connectionType == NewInstance ||
|
||||
(connectionType == SecondaryInstance &&
|
||||
options & SingleApplication::Mode::SecondaryNotification)) {
|
||||
emit q->instanceStarted();
|
||||
}
|
||||
|
||||
if (nextConnSocket->bytesAvailable() > 0) {
|
||||
emit this->slotDataAvailable(nextConnSocket, instanceId);
|
||||
}
|
||||
}
|
||||
|
||||
void SingleApplicationPrivate::slotDataAvailable(QLocalSocket* dataSocket,
|
||||
quint32 instanceId)
|
||||
{
|
||||
Q_Q(SingleApplication);
|
||||
emit q->receivedMessage(instanceId, dataSocket->readAll());
|
||||
}
|
||||
|
||||
void SingleApplicationPrivate::slotClientConnectionClosed(
|
||||
QLocalSocket* closedSocket,
|
||||
quint32 instanceId)
|
||||
{
|
||||
if (closedSocket->bytesAvailable() > 0)
|
||||
emit slotDataAvailable(closedSocket, instanceId);
|
||||
closedSocket->deleteLater();
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Constructor. Checks and fires up LocalServer or closes the program
|
||||
* if another instance already exists
|
||||
* @param argc
|
||||
* @param argv
|
||||
* @param {bool} allowSecondaryInstances
|
||||
* @param allowSecondary Whether to enable secondary instance support
|
||||
* @param options Optional flags to toggle specific behaviour
|
||||
* @param timeout Maximum time blocking functions are allowed during app load
|
||||
*/
|
||||
SingleApplication::SingleApplication(int& argc,
|
||||
char* argv[],
|
||||
@@ -383,115 +46,213 @@ SingleApplication::SingleApplication(int& argc,
|
||||
{
|
||||
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(timeout);
|
||||
d->genBlockServerName();
|
||||
|
||||
// To mitigate QSharedMemory issues with large amount of processes
|
||||
// attempting to attach at the same time
|
||||
d->randomSleep();
|
||||
|
||||
// Guarantee thread safe behaviour with a shared memory block. Also by
|
||||
// explicitly attaching it and then deleting it we make sure that the
|
||||
// memory is deleted even if the process had crashed on Unix.
|
||||
#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))) {
|
||||
d->startPrimary(true);
|
||||
return;
|
||||
// Initialize the shared memory block
|
||||
if (!d->memory->lock()) {
|
||||
qCritical()
|
||||
<< "SingleApplication: Unable to lock memory block after create.";
|
||||
abortSafely();
|
||||
}
|
||||
d->initializeMemoryBlock();
|
||||
} else {
|
||||
// Attempt to attach to the memory segment
|
||||
if (d->memory->attach()) {
|
||||
d->memory->lock();
|
||||
InstancesInfo* inst =
|
||||
static_cast<InstancesInfo*>(d->memory->data());
|
||||
|
||||
if (!inst->primary) {
|
||||
d->startPrimary(false);
|
||||
d->memory->unlock();
|
||||
return;
|
||||
if (d->memory->error() == QSharedMemory::AlreadyExists) {
|
||||
// Attempt to attach to the memory segment
|
||||
if (!d->memory->attach()) {
|
||||
qCritical() << "SingleApplication: Unable to attach to shared "
|
||||
"memory block.";
|
||||
abortSafely();
|
||||
}
|
||||
|
||||
// Check if another instance can be started
|
||||
if (allowSecondary) {
|
||||
inst->secondary += 1;
|
||||
d->instanceNumber = inst->secondary;
|
||||
d->startSecondary();
|
||||
if (d->options & Mode::SecondaryNotification) {
|
||||
d->connectToPrimary(
|
||||
timeout, SingleApplicationPrivate::SecondaryInstance);
|
||||
}
|
||||
d->memory->unlock();
|
||||
return;
|
||||
if (!d->memory->lock()) {
|
||||
qCritical() << "SingleApplication: Unable to lock memory block "
|
||||
"after attach.";
|
||||
abortSafely();
|
||||
}
|
||||
|
||||
d->memory->unlock();
|
||||
} else {
|
||||
qCritical() << "SingleApplication: Unable to create block.";
|
||||
abortSafely();
|
||||
}
|
||||
}
|
||||
|
||||
d->connectToPrimary(timeout, SingleApplicationPrivate::NewInstance);
|
||||
delete d;
|
||||
auto* inst = static_cast<InstancesInfo*>(d->memory->data());
|
||||
QElapsedTimer time;
|
||||
time.start();
|
||||
|
||||
// show message box with inforation that Flameshot is already launched
|
||||
QMessageBox msgBox;
|
||||
msgBox.setText(QObject::tr(
|
||||
"Hi, I'm already running!\nYou can find me in the system tray."));
|
||||
int cnt = 3;
|
||||
QTimer cntDown;
|
||||
QObject::connect(
|
||||
&cntDown, &QTimer::timeout, [&msgBox, &cnt, &cntDown]() -> void {
|
||||
if (--cnt < 0) {
|
||||
cntDown.stop();
|
||||
msgBox.close();
|
||||
} else {
|
||||
msgBox.setWindowTitle(QString("Flameshot (%1)").arg(cnt + 1));
|
||||
}
|
||||
});
|
||||
cntDown.start(1000);
|
||||
msgBox.exec();
|
||||
// Make sure the shared memory block is initialised and in consistent state
|
||||
while (true) {
|
||||
// If the shared memory block's checksum is valid continue
|
||||
if (d->blockChecksum() == inst->checksum)
|
||||
break;
|
||||
|
||||
// If more than 5s have elapsed, assume the primary instance crashed and
|
||||
// assume it's position
|
||||
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();
|
||||
}
|
||||
|
||||
// Otherwise wait for a random period and try again. The random sleep
|
||||
// here limits the probability of a collision between two racing apps
|
||||
// and allows the app to initialise faster
|
||||
if (!d->memory->unlock()) {
|
||||
qDebug()
|
||||
<< "SingleApplication: Unable to unlock memory for random wait.";
|
||||
qDebug() << d->memory->errorString();
|
||||
}
|
||||
d->randomSleep();
|
||||
if (!d->memory->lock()) {
|
||||
qCritical()
|
||||
<< "SingleApplication: Unable to lock memory after random wait.";
|
||||
abortSafely();
|
||||
}
|
||||
}
|
||||
|
||||
if (inst->primary == false) {
|
||||
d->startPrimary();
|
||||
if (!d->memory->unlock()) {
|
||||
qDebug() << "SingleApplication: Unable to unlock memory after "
|
||||
"primary start.";
|
||||
qDebug() << d->memory->errorString();
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
// Check if another instance can be started
|
||||
if (allowSecondary) {
|
||||
d->startSecondary();
|
||||
if (d->options & Mode::SecondaryNotification) {
|
||||
d->connectToPrimary(timeout,
|
||||
SingleApplicationPrivate::SecondaryInstance);
|
||||
}
|
||||
if (!d->memory->unlock()) {
|
||||
qDebug() << "SingleApplication: Unable to unlock memory after "
|
||||
"secondary start.";
|
||||
qDebug() << d->memory->errorString();
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
if (!d->memory->unlock()) {
|
||||
qDebug()
|
||||
<< "SingleApplication: Unable to unlock memory at end of execution.";
|
||||
qDebug() << d->memory->errorString();
|
||||
}
|
||||
|
||||
d->connectToPrimary(timeout, SingleApplicationPrivate::NewInstance);
|
||||
|
||||
delete d;
|
||||
|
||||
::exit(EXIT_SUCCESS);
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief Destructor
|
||||
*/
|
||||
SingleApplication::~SingleApplication()
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
delete d;
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if the current application instance is primary.
|
||||
* @return Returns true if the instance is primary, false otherwise.
|
||||
*/
|
||||
bool SingleApplication::isPrimary()
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
return d->server != nullptr;
|
||||
}
|
||||
|
||||
/**
|
||||
* Checks if the current application instance is secondary.
|
||||
* @return Returns true if the instance is secondary, false otherwise.
|
||||
*/
|
||||
bool SingleApplication::isSecondary()
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
return d->server == nullptr;
|
||||
}
|
||||
|
||||
/**
|
||||
* Allows you to identify an instance by returning unique consecutive instance
|
||||
* ids. It is reset when the first (primary) instance of your app starts and
|
||||
* only incremented afterwards.
|
||||
* @return Returns a unique instance id.
|
||||
*/
|
||||
quint32 SingleApplication::instanceId()
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
return d->instanceNumber;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the OS PID (Process Identifier) of the process running the primary
|
||||
* instance. Especially useful when SingleApplication is coupled with OS.
|
||||
* specific APIs.
|
||||
* @return Returns the primary instance PID.
|
||||
*/
|
||||
qint64 SingleApplication::primaryPid()
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
return d->primaryPid();
|
||||
}
|
||||
|
||||
bool SingleApplication::sendMessage(QByteArray message, int timeout)
|
||||
/**
|
||||
* Returns the username the primary instance is running as.
|
||||
* @return Returns the username the primary instance is running as.
|
||||
*/
|
||||
QString SingleApplication::primaryUser()
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
return d->primaryUser();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the username the current instance is running as.
|
||||
* @return Returns the username the current instance is running as.
|
||||
*/
|
||||
QString SingleApplication::currentUser()
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
return d->getUsername();
|
||||
}
|
||||
|
||||
/**
|
||||
* Sends message to the Primary Instance.
|
||||
* @param message The message to send.
|
||||
* @param timeout the maximum timeout in milliseconds for blocking functions.
|
||||
* @return true if the message was sent successfuly, false otherwise.
|
||||
*/
|
||||
bool SingleApplication::sendMessage(const QByteArray& message, int timeout)
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
|
||||
@@ -500,10 +261,25 @@ bool SingleApplication::sendMessage(QByteArray message, int timeout)
|
||||
return false;
|
||||
|
||||
// Make sure the socket is connected
|
||||
d->connectToPrimary(timeout, SingleApplicationPrivate::Reconnect);
|
||||
if (!d->connectToPrimary(timeout, SingleApplicationPrivate::Reconnect))
|
||||
return false;
|
||||
|
||||
d->socket->write(message);
|
||||
bool dataWritten = d->socket->flush();
|
||||
d->socket->waitForBytesWritten(timeout);
|
||||
bool dataWritten = d->socket->waitForBytesWritten(timeout);
|
||||
d->socket->flush();
|
||||
return dataWritten;
|
||||
}
|
||||
|
||||
/**
|
||||
* Cleans up the shared memory block and exits with a failure.
|
||||
* This function halts program execution.
|
||||
*/
|
||||
void SingleApplication::abortSafely()
|
||||
{
|
||||
Q_D(SingleApplication);
|
||||
|
||||
qCritical() << "SingleApplication: " << d->memory->error()
|
||||
<< d->memory->errorString();
|
||||
delete d;
|
||||
::exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user