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/*
* This file is part of smolbote. It's copyrighted by the contributors recorded
* in the version control history of the file, available from its original
* location: https://neueland.iserlohn-fortress.net/smolbote.hg
*
* SPDX-License-Identifier: GPL-3.0
*/
#include "singleapplication.h"
#include <QDataStream>
#include <QLocalServer>
#include <QLocalSocket>
#include <QJsonObject>
#include <QJsonDocument>
SingleApplication::SingleApplication(int &argc, char **argv)
: QApplication(argc, argv)
{
}
SingleApplication::~SingleApplication()
{
if(m_localServer != nullptr) {
if(m_localServer->isListening()) {
m_localServer->close();
QLocalServer::removeServer(LOCALSERVER_KEY);
}
}
}
/**
* @brief SingleApplication::bindLocalSocket check for running local server by connecting to it
* @return true if no other instance, false otherwise
*/
bool SingleApplication::bindLocalSocket(const QString &name)
{
LOCALSERVER_KEY = name;
QLocalSocket socket;
socket.connectToServer(LOCALSERVER_KEY);
if(socket.waitForConnected(LOCALSERVER_TIMEOUT)) {
// another server is running
socket.close();
return false;
}
// there is either no such socket, or the socket wasn't cleaned up
else {
m_localServer = new QLocalServer(this);
connect(m_localServer, &QLocalServer::newConnection, this, &SingleApplication::receiveMessage);
// no other server
QLocalServer::removeServer(LOCALSERVER_KEY);
return m_localServer->listen(LOCALSERVER_KEY);
}
}
QString SingleApplication::serverName() const
{
Q_CHECK_PTR(m_localServer);
return m_localServer->fullServerName();
}
int SingleApplication::sendMessage(const QByteArray &data)
{
QLocalSocket socket;
socket.connectToServer(LOCALSERVER_KEY);
if(socket.waitForConnected(LOCALSERVER_TIMEOUT)) {
socket.write(data);
socket.waitForBytesWritten(LOCALSERVER_TIMEOUT);
return EXIT_SUCCESS;
}
return EXIT_FAILURE;
}
int SingleApplication::sendMessage(const QJsonObject &message)
{
QLocalSocket socket;
socket.connectToServer(LOCALSERVER_KEY);
if(socket.waitForConnected(LOCALSERVER_TIMEOUT)) {
socket.write(QJsonDocument(message).toJson());
socket.waitForBytesWritten(LOCALSERVER_TIMEOUT);
return EXIT_SUCCESS;
}
return EXIT_FAILURE;
}
void SingleApplication::receiveMessage()
{
QLocalSocket *socket = m_localServer->nextPendingConnection();
if(socket == nullptr) {
return;
}
socket->waitForReadyRead();
auto message = socket->readAll();
if(message.isEmpty())
return;
#ifdef QT_DEBUG
qDebug("received message: %s", qUtf8Printable(message));
#endif
QJsonDocument doc = QJsonDocument::fromJson(message);
emit messageAvailable(doc.object());
}
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