From 9f479b8f76238a03bce5d13aee14efd34e659c6e Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Sun, 30 Oct 2022 20:34:23 +0100
Subject: Clean up and modernize code

- static "new-style" signal->slot connections
- Fix a lot of things Clang-Tidy complained about
- Move includes to .cpp files and use forward decls in .h
- Don't use <QtWidgets> and <QtCore>, but specific includes instead
---
 src/client/vnc/vncserver.cpp | 35 ++++++++++++++++++-----------------
 1 file changed, 18 insertions(+), 17 deletions(-)

(limited to 'src/client/vnc/vncserver.cpp')

diff --git a/src/client/vnc/vncserver.cpp b/src/client/vnc/vncserver.cpp
index d819668..4c2363e 100644
--- a/src/client/vnc/vncserver.cpp
+++ b/src/client/vnc/vncserver.cpp
@@ -6,11 +6,12 @@
  */
 
 
-#include <QApplication>
+#include <QGuiApplication>
 #include <QProcess>
-#include <QDesktopWidget>
+#include <QScreen>
 #include "vncserver.h"
 #include "../util/util.h"
+#include "../../shared/util.h"
 
 VncServer* VncServer::me = nullptr;
 
@@ -34,7 +35,7 @@ static QString makePassword(int len = 10)
 {
 	QString ret(len, Qt::Uninitialized);
 	for (int i = 0; i < len; ++i)
-		ret[i] = QChar(43 + qrand() % 80);
+		ret[i] = QChar(43 + slxrand() % 80);
 	return ret;
 }
 
@@ -53,7 +54,7 @@ VncServer::VncServer() : _process(nullptr), _port(0), _timerId(0) {}
 /**
  * @brief VncServer::~VncServer
  */
-VncServer::~VncServer() {}
+VncServer::~VncServer() = default;
 
 QSharedPointer<QFile> VncServer::createPwFile(const QDir& dir)
 {
@@ -74,8 +75,8 @@ void VncServer::start()
 {
 	// Keep things clean
 	if (_process != nullptr) {
-		disconnect(_process, SIGNAL(error(QProcess::ProcessError)), this, SLOT(onError(QProcess::ProcessError)));
-		disconnect(_process, SIGNAL(finished(int)), this, SLOT(onFinished(int)));
+		_process->blockSignals(true);
+		_process->kill();
 	}
 	this->stop();
 	// Generate passwords
@@ -99,22 +100,22 @@ void VncServer::start()
 	pwhandle->close();
 	// Create new process
 	_process = new QProcess(this);
-	connect(_process, SIGNAL(readyReadStandardOutput()), this, SLOT(onStdOut()));
-	connect(_process, SIGNAL(readyReadStandardError()), this, SLOT(onStdErr()));
-	connect(_process, SIGNAL(error(QProcess::ProcessError)), this, SLOT(onError(QProcess::ProcessError)));
-	connect(_process, SIGNAL(finished(int)), this, SLOT(onFinished(int)));
+	connect(_process, &QProcess::readyReadStandardOutput, this, &VncServer::onStdOut);
+	connect(_process, &QProcess::readyReadStandardError, this, &VncServer::onStdErr);
+	connect(_process, &QProcess::errorOccurred, this, &VncServer::onError);
+	connect(_process,  QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished),
+			this, &VncServer::onFinished);
 	_timerId = startTimer(4000);
 	QStringList args;
 	args << "-forever";
 	args << "-display" << ":0";
-	args << "-passwdfile" << (QString("rm:" + pwhandle->fileName()));
+	args << "-passwdfile" << (QStringLiteral("rm:") + pwhandle->fileName());
 	args << "-shared";
 	args << "-repeat";
 	args << "-autoport" << QString::number(54112);
 
 	// Get rect of primary screen
-	const QDesktopWidget desktop;
-	const QRect primaryRect = desktop.screenGeometry();
+    const QRect primaryRect = QGuiApplication::primaryScreen()->geometry();
 
 	// Tell x11vnc to just use primary screen
 	args << "-clip";
@@ -141,8 +142,8 @@ void VncServer::stop()
 	if (_process == nullptr)
 		return;
 	qDebug("Stopping old VNC server.");
-	disconnect(_process, SIGNAL(readyReadStandardOutput()), this, SLOT(onStdOut()));
-	disconnect(_process, SIGNAL(readyReadStandardError()), this, SLOT(onStdErr()));
+	disconnect(_process, &QProcess::readyReadStandardOutput, this, &VncServer::onStdOut);
+	disconnect(_process, &QProcess::readyReadStandardError, this, &VncServer::onStdErr);
 	QProcess *process = _process;
 	_process = nullptr;
 	_port = 0;
@@ -215,7 +216,7 @@ void VncServer::onStdErr()
 		qDebug("VncServer::onStdErr() called in bad state.");
 		return;
 	}
-	QByteArray data(_process->readAllStandardError());
+	_process->readAllStandardError(); // Throw away
 }
 
 /**
@@ -232,7 +233,7 @@ void VncServer::onError(QProcess::ProcessError /* error */ )
  * @brief VncServer::onFinished
  * @param exitCode
  */
-void VncServer::onFinished(int /* exitCode */ )
+void VncServer::onFinished(int /* exitCode */, QProcess::ExitStatus /* exitStatus */)
 {
 	this->stop();
 	emit started(0, _ropass, _rwpass);
-- 
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