ShadowSocks protocol fixes:

- remote for OpenVPN is set to real ip address
- remote ip will be added as alias in docker container
- ss-local graceful shutdown
- crash fixes

client/core/defs.h

@@ -63,7 +63,11 @@ enum ErrorCode
 
     // VPN errors
     OpenVpnAdaptersInUseError,
-    OpenVpnUnknownError
+    OpenVpnUnknownError,
+
+    // 3rd party utils errors
+    OpenVpnExecutableCrashed,
+    ShadowSocksExecutableCrashed
 };
 
 namespace config {

client/core/openvpnconfigurator.cpp

@@ -240,12 +240,7 @@ QString OpenVpnConfigurator::genOpenVpnConfig(const ServerCredentials &credentia
         config.replace("redirect-gateway def1 bypass-dhcp", "");
     }
 
-    if (proto == Protocol::ShadowSocks) {
-        config.replace("$REMOTE_HOST", "10.8.0.1");
-    }
-    else {
     config.replace("$REMOTE_HOST", connData.host);
-    }
     config.replace("$REMOTE_PORT", "1194");
     config.replace("$CA_CERT", connData.caCert);
     config.replace("$CLIENT_CERT", connData.clientCert);
@@ -265,7 +260,9 @@ QString OpenVpnConfigurator::convertOpenSShKey(const QString &key)
     p.setProcessChannelMode(QProcess::MergedChannels);
 
     QTemporaryFile tmp;
+#ifdef QT_DEBUG
     tmp.setAutoRemove(false);
+#endif
     tmp.open();
     tmp.write(key.toUtf8());
     tmp.close();

client/core/servercontroller.cpp

@@ -11,6 +11,7 @@
 #include <QApplication>
 
 #include "sshconnectionmanager.h"
+#include "utils.h"
 
 
 using namespace QSsh;
@@ -24,7 +25,7 @@ QString ServerController::getContainerName(DockerContainer container)
     }
 }
 
-ErrorCode ServerController::runScript(DockerContainer container,
+ErrorCode ServerController::runScript(const QHash<QString, QString> &vars,
     const SshConnectionParameters &sshParams, QString script,
     const std::function<void(const QString &, QSharedPointer<SshRemoteProcess>)> &cbReadStdOut,
     const std::function<void(const QString &, QSharedPointer<SshRemoteProcess>)> &cbReadStdErr)
@@ -41,7 +42,11 @@ ErrorCode ServerController::runScript(DockerContainer container,
     const QStringList &lines = script.split("\n", QString::SkipEmptyParts);
     for (int i = 0; i < lines.count(); i++) {
         QString line = lines.at(i);
-        line.replace("$CONTAINER_NAME", getContainerName(container));
+
+        for (const QString &var : vars.keys()) {
+            //qDebug() << "Replacing" << var << vars.value(var);
+            line.replace(var, vars.value(var));
+        }
 
         if (line.startsWith("#")) {
             continue;
@@ -209,7 +214,7 @@ ErrorCode ServerController::signCert(DockerContainer container,
 
     QStringList script {script_import, script_sign};
 
-    return runScript(container, sshParams(credentials), script.join("\n"));
+    return runScript(genVarsForScript(credentials, container), sshParams(credentials), script.join("\n"));
 }
 
 ErrorCode ServerController::checkOpenVpnServer(DockerContainer container, const ServerCredentials &credentials)
@@ -306,7 +311,7 @@ ErrorCode ServerController::removeServer(const ServerCredentials &credentials, P
     scriptData = file.readAll();
     if (scriptData.isEmpty()) return ErrorCode::InternalError;
 
-    return runScript(container, sshParams(credentials), scriptData);
+    return runScript(genVarsForScript(credentials, container), sshParams(credentials), scriptData);
 }
 
 ErrorCode ServerController::setupServer(const ServerCredentials &credentials, Protocol proto)
@@ -351,7 +356,7 @@ ErrorCode ServerController::setupOpenVpnServer(const ServerCredentials &credenti
         stdOut += data + "\n";
     };
 
-    ErrorCode e = runScript(DockerContainer::OpenVpn, sshParams(credentials), scriptData, cbReadStdOut, cbReadStdErr);
+    ErrorCode e = runScript(genVarsForScript(credentials, DockerContainer::OpenVpn), sshParams(credentials), scriptData, cbReadStdOut, cbReadStdErr);
     if (e) return e;
     QApplication::processEvents();
 
@@ -384,7 +389,7 @@ ErrorCode ServerController::setupShadowSocksServer(const ServerCredentials &cred
         stdOut += data + "\n";
     };
 
-    ErrorCode e = runScript(DockerContainer::ShadowSocks, sshParams(credentials), scriptData, cbReadStdOut, cbReadStdErr);
+    ErrorCode e = runScript(genVarsForScript(credentials, DockerContainer::ShadowSocks), sshParams(credentials), scriptData, cbReadStdOut, cbReadStdErr);
     if (e) return e;
 
     // Create ss config
@@ -407,10 +412,27 @@ ErrorCode ServerController::setupShadowSocksServer(const ServerCredentials &cred
     QString script = QString("sudo docker exec -d %1 sh -c \"ss-server -c %2\"").
             arg(getContainerName(DockerContainer::ShadowSocks)).arg(sSConfigPath);
 
-    e = runScript(DockerContainer::ShadowSocks, sshParams(credentials), script);
+    e = runScript(genVarsForScript(credentials, DockerContainer::ShadowSocks), sshParams(credentials), script);
     return e;
 }
 
+QHash<QString, QString> ServerController::genVarsForScript(const ServerCredentials &credentials, DockerContainer container)
+{
+    QHash<QString, QString> vars;
+
+    vars.insert("$CONTAINER_NAME", getContainerName(container));
+
+    QString serverIp = Utils::getIPAddress(credentials.hostName);
+    if (!serverIp.isEmpty()) {
+        vars.insert("$SERVER_IP_ADDRESS", serverIp);
+    }
+    else {
+        qWarning() << "ServerController::genVarsForScript unable to resolve address for credentials.hostName";
+    }
+
+    return vars;
+}
+
 SshConnection *ServerController::connectToHost(const SshConnectionParameters &sshParams)
 {
     SshConnection *client = acquireConnection(sshParams);
@@ -470,5 +492,5 @@ ErrorCode ServerController::setupServerFirewall(const ServerCredentials &credent
     file.open(QIODevice::ReadOnly);
 
     QString script = file.readAll();
-    return runScript(DockerContainer::OpenVpn, sshParams(credentials), script);
+    return runScript(genVarsForScript(credentials, DockerContainer::OpenVpn), sshParams(credentials), script);
 }

client/core/servercontroller.h

@@ -47,7 +47,8 @@ public:
     static ErrorCode setupServerFirewall(const ServerCredentials &credentials);
 private:
     static QSsh::SshConnection *connectToHost(const QSsh::SshConnectionParameters &sshParams);
-    static ErrorCode runScript(DockerContainer container,
+
+    static ErrorCode runScript(const QHash<QString, QString> &vars,
         const QSsh::SshConnectionParameters &sshParams, QString script,
         const std::function<void(const QString &, QSharedPointer<QSsh::SshRemoteProcess>)> &cbReadStdOut = nullptr,
         const std::function<void(const QString &, QSharedPointer<QSsh::SshRemoteProcess>)> &cbReadStdErr = nullptr);
@@ -55,6 +56,8 @@ private:
     static ErrorCode setupOpenVpnServer(const ServerCredentials &credentials);
     static ErrorCode setupShadowSocksServer(const ServerCredentials &credentials);
 
+
+    static QHash<QString, QString> genVarsForScript(const ServerCredentials &credentials, DockerContainer container);
 };
 
 #endif // SERVERCONTROLLER_H

client/managementserver.cpp

@@ -22,7 +22,7 @@ bool ManagementServer::isOpen() const
 
 void ManagementServer::stop()
 {
-    m_tcpServer->close();
+    if (m_tcpServer) m_tcpServer->close();
 }
 
 void ManagementServer::onAcceptError(QAbstractSocket::SocketError socketError)
@@ -37,7 +37,9 @@ qint64 ManagementServer::writeCommand(const QString& message)
     }
 
     const QString command = message + "\n";
-    return m_socket->write(command.toStdString().c_str());
+    qint64 bytesWritten = m_socket->write(command.toStdString().c_str());
+    m_socket->flush();
+    return bytesWritten;
 }
 
 void ManagementServer::onNewConnection()
@@ -45,7 +47,7 @@ void ManagementServer::onNewConnection()
     qDebug() << "New incoming connection";
 
     m_socket = QPointer<QTcpSocket>(m_tcpServer->nextPendingConnection());
-    m_tcpServer->close();
+    if (m_tcpServer) m_tcpServer->close();
 
     QObject::connect(m_socket.data(), SIGNAL(disconnected()), this, SLOT(onSocketDisconnected()));
     QObject::connect(m_socket.data(), SIGNAL(error(QAbstractSocket::SocketError)), this, SLOT(onSocketError(QAbstractSocket::SocketError)));
@@ -78,9 +80,7 @@ void ManagementServer::onReadyRead()
 
 bool ManagementServer::start(const QString& host, unsigned int port)
 {
-    if (m_tcpServer) {
+    if (m_tcpServer) m_tcpServer->close();
-        m_tcpServer->deleteLater();
-    }
 
     m_tcpServer =  QSharedPointer<QTcpServer>(new QTcpServer(this), [](QTcpServer *s){
         if (s) s->deleteLater();

client/protocols/openvpnprotocol.cpp

@@ -17,12 +17,15 @@ OpenVpnProtocol::OpenVpnProtocol(const QJsonObject &configuration, QObject* pare
 
 OpenVpnProtocol::~OpenVpnProtocol()
 {
-    qDebug() << "OpenVpnProtocol::stop()";
+    qDebug() << "OpenVpnProtocol::~OpenVpnProtocol()";
     OpenVpnProtocol::stop();
+    QThread::msleep(200);
 }
 
 void OpenVpnProtocol::stop()
 {
+    qDebug() << "OpenVpnProtocol::stop()";
+
     // TODO: need refactoring
     // sendTermSignal() will even return true while server connected ???
     if ((m_connectionState == VpnProtocol::ConnectionState::Preparing) ||
@@ -32,6 +35,8 @@ void OpenVpnProtocol::stop()
         if (!sendTermSignal()) {
             killOpenVpnProcess();
         }
+        m_managementServer.stop();
+        qApp->processEvents();
         setConnectionState(VpnProtocol::ConnectionState::Disconnecting);
     }
 }

client/protocols/shadowsocksvpnprotocol.cpp

@@ -16,26 +16,51 @@ ShadowSocksVpnProtocol::ShadowSocksVpnProtocol(const QJsonObject &configuration,
 
 ShadowSocksVpnProtocol::~ShadowSocksVpnProtocol()
 {
-    qDebug() << "ShadowSocksVpnProtocol::stop()";
+    qDebug() << "ShadowSocksVpnProtocol::~ShadowSocksVpnProtocol";
     ShadowSocksVpnProtocol::stop();
+    QThread::msleep(200);
+    m_ssProcess.close();
 }
 
 ErrorCode ShadowSocksVpnProtocol::start()
 {
-    qDebug() << "ShadowSocksVpnProtocol::start()";
+    if (Utils::processIsRunning(Utils::executable("ss-local", false))) {
+        Utils::killProcessByName(Utils::executable("ss-local", false));
+    }
+
+#ifdef QT_DEBUG
+    m_shadowSocksCfgFile.setAutoRemove(false);
+#endif
+    m_shadowSocksCfgFile.open();
+    m_shadowSocksCfgFile.write(QJsonDocument(m_shadowSocksConfig).toJson());
+    m_shadowSocksCfgFile.close();
+
+    QStringList args = QStringList() << "-c" << m_shadowSocksCfgFile.fileName()
+                                     << "--no-delay";
+
+    qDebug().noquote() << "ShadowSocksVpnProtocol::start()"
+                       << shadowSocksExecPath() << args.join(" ");
 
     m_ssProcess.setProcessChannelMode(QProcess::MergedChannels);
 
     m_ssProcess.setProgram(shadowSocksExecPath());
-    m_ssProcess.setArguments(QStringList() << "-s" << m_shadowSocksConfig.value("server").toString()
+    m_ssProcess.setArguments(args);
-                                 << "-p" << QString::number(m_shadowSocksConfig.value("server_port").toInt())
-                                 << "-l" << QString::number(m_shadowSocksConfig.value("local_port").toInt())
-                                 << "-m" << m_shadowSocksConfig.value("method").toString()
-                                 << "-k" << m_shadowSocksConfig.value("password").toString()
-    );
 
-    connect(&m_ssProcess, &QProcess::readyRead, this, [this](){
+    connect(&m_ssProcess, &QProcess::readyReadStandardOutput, this, [this](){
-        qDebug().noquote() << m_ssProcess.readAll();
+        qDebug().noquote() << "ss-local:" << m_ssProcess.readAllStandardOutput();
+    });
+
+    connect(&m_ssProcess, QOverload<int, QProcess::ExitStatus>::of(&QProcess::finished), this, [this](int exitCode, QProcess::ExitStatus exitStatus){
+        qDebug().noquote() << "ShadowSocksVpnProtocol finished, exitCode, exiStatus" << exitCode << exitStatus;
+        setConnectionState(VpnProtocol::ConnectionState::Disconnected);
+        if (exitStatus != QProcess::NormalExit){
+            emit protocolError(amnezia::ErrorCode::ShadowSocksExecutableCrashed);
+            stop();
+        }
+        if (exitCode !=0 ){
+            emit protocolError(amnezia::ErrorCode::InternalError);
+            stop();
+        }
     });
 
     m_ssProcess.start();
@@ -54,10 +79,14 @@ void ShadowSocksVpnProtocol::stop()
     OpenVpnProtocol::stop();
 
     qDebug() << "ShadowSocksVpnProtocol::stop()";
-    m_ssProcess.close();
+    m_ssProcess.terminate();
+
+#ifdef Q_OS_WIN
+    Utils::signalCtrl(m_ssProcess.processId(), CTRL_C_EVENT);
+#endif
 }
 
-QString ShadowSocksVpnProtocol::shadowSocksExecPath() const
+QString ShadowSocksVpnProtocol::shadowSocksExecPath()
 {
 #ifdef Q_OS_WIN
     return Utils::executable(QString("ss/ss-local"), true);

client/protocols/shadowsocksvpnprotocol.h

@@ -17,13 +17,16 @@ public:
 
 protected:
     void readShadowSocksConfiguration(const QJsonObject &configuration);
-    QString shadowSocksExecPath() const;
 
 protected:
     QJsonObject m_shadowSocksConfig;
 
+private:
+    static QString shadowSocksExecPath();
+
 private:
     QProcess m_ssProcess;
+    QTemporaryFile m_shadowSocksCfgFile;
 };
 
 #endif // SHADOWSOCKSVPNPROTOCOL_H

client/server_scripts/remove_container.sh

@@ -1,2 +1,2 @@
-docker stop $CONTAINER_NAME
+sudo docker stop $CONTAINER_NAME
-docker rm -f $CONTAINER_NAME
+sudo docker rm -f $CONTAINER_NAME

client/server_scripts/setup_firewall.sh

@@ -1,3 +1,3 @@
-sysctl -w net.ipv4.ip_forward=1
+sudo sysctl -w net.ipv4.ip_forward=1
-iptables -P FORWARD ACCEPT
+sudo iptables -P FORWARD ACCEPT
-iptables -A INPUT -p icmp --icmp-type echo-request -j DROP
+sudo iptables -A INPUT -p icmp --icmp-type echo-request -j DROP

client/server_scripts/setup_openvpn_server.sh

@@ -1,12 +1,12 @@
 # CONTAINER_NAME=... this var will be set in ServerController
 # Don't run commands in background like sh -c "openvpn &"
 
-pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; if [[ -f "/usr/bin/sudo" ]]; then $pm install -y sudo; fi
+pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; if [[ -f "/usr/bin/sudo" ]]; then $pm install -y -q sudo; fi
 sudo iptables -P FORWARD ACCEPT
 
-pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; sudo $pm update -y
+pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; sudo $pm update -y -q
-pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; sudo $pm install -y curl
+pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; sudo $pm install -y -q curl
-pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then sudo $pm_apt install -y docker.io; else sudo $pm_yum install -y docker; fi
+pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then sudo export DEBIAN_FRONTEND=noninteractive; sudo $pm_apt install -y -q docker.io; else sudo $pm_yum install -y -q docker; fi
 sudo systemctl start docker
 
 sudo docker stop $CONTAINER_NAME
@@ -14,6 +14,8 @@ sudo docker rm -f $CONTAINER_NAME
 sudo docker pull amneziavpn/openvpn:latest
 sudo docker run -d --restart always --cap-add=NET_ADMIN -p 1194:1194/udp --name $CONTAINER_NAME amneziavpn/openvpn:latest
 
+# Prevent to route packets outside of the container in case if server behind of the NAT
+sudo docker exec -i $CONTAINER_NAME sh -c "ifconfig eth0:0 $SERVER_IP_ADDRESS netmask 255.255.255.255 up"
 
 sudo docker exec -i $CONTAINER_NAME sh -c "mkdir -p /opt/amneziavpn_data/clients"
 sudo docker exec -i $CONTAINER_NAME sh -c "cd /opt/amneziavpn_data && easyrsa init-pki"

client/server_scripts/setup_shadowsocks_server.sh

@@ -1,12 +1,12 @@
 # CONTAINER_NAME=... this var will be set in ServerController
 # Don't run commands in background like sh -c "openvpn &"
 
-pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; if [[ -f "/usr/bin/sudo" ]]; then $pm install -y sudo; fi
+pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; if [[ -f "/usr/bin/sudo" ]]; then $pm install -y -q sudo; fi
 sudo iptables -P FORWARD ACCEPT
 
-pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; sudo $pm update -y
+pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; sudo $pm update -y -q
-pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; sudo $pm install -y curl
+pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then pm=$pm_apt; else pm=$pm_yum; fi; sudo $pm install -y -q curl
-pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then sudo $pm_apt install -y docker.io; else sudo $pm_yum install -y docker; fi
+pm_apt="/usr/bin/apt-get"; pm_yum="/usr/bin/yum"; if [[ -f "$pm_apt" ]]; then sudo export DEBIAN_FRONTEND=noninteractive; sudo $pm_apt install -y -q docker.io; else sudo $pm_yum install -y -q docker; fi
 sudo systemctl start docker
 
 sudo docker stop $CONTAINER_NAME
@@ -14,6 +14,8 @@ sudo docker rm -f $CONTAINER_NAME
 sudo docker pull amneziavpn/shadowsocks:latest
 sudo docker run -d --restart always --cap-add=NET_ADMIN -p 1194:1194/tcp -p 6789:6789/tcp --name $CONTAINER_NAME amneziavpn/shadowsocks:latest
 
+# Prevent to route packets outside of the container in case if server behind of the NAT
+sudo docker exec -i $CONTAINER_NAME sh -c "ifconfig eth0:0 $SERVER_IP_ADDRESS netmask 255.255.255.255 up"
 
 sudo docker exec -i $CONTAINER_NAME sh -c "mkdir -p /opt/amneziavpn_data/clients"
 sudo docker exec -i $CONTAINER_NAME sh -c "cd /opt/amneziavpn_data && easyrsa init-pki"

client/utils.cpp

@@ -9,19 +9,6 @@
 #include "defines.h"
 #include "utils.h"
 
-QString Utils::toString(bool value)
-{
-    return value ? "true" : "false";
-}
-
-QString Utils::serverName()
-{
-#ifdef Q_OS_WIN
-    return SERVICE_NAME;
-#else
-    return QString("/tmp/%1").arg(SERVICE_NAME);
-#endif
-}
 
 QString Utils::defaultVpnConfigFileName()
 {
@@ -153,3 +140,49 @@ bool Utils::checkIPFormat(const QString& ip)
     }
     return true;
 }
+
+void Utils::killProcessByName(const QString &name)
+{
+    qDebug().noquote() << "Kill process" << name;
+#ifdef Q_OS_WIN
+    QProcess::execute(QString("taskkill /im %1 /f").arg(name));
+#else
+    QProcess::execute(QString("pkill %1").arg(name));
+#endif
+}
+
+#ifdef Q_OS_WIN
+// Inspired from http://stackoverflow.com/a/15281070/1529139
+// and http://stackoverflow.com/q/40059902/1529139
+bool Utils::signalCtrl(DWORD dwProcessId, DWORD dwCtrlEvent)
+{
+    bool success = false;
+    DWORD thisConsoleId = GetCurrentProcessId();
+    // Leave current console if it exists
+    // (otherwise AttachConsole will return ERROR_ACCESS_DENIED)
+    bool consoleDetached = (FreeConsole() != FALSE);
+
+    if (AttachConsole(dwProcessId) != FALSE)
+    {
+        // Add a fake Ctrl-C handler for avoid instant kill is this console
+        // WARNING: do not revert it or current program will be also killed
+        SetConsoleCtrlHandler(nullptr, true);
+        success = (GenerateConsoleCtrlEvent(dwCtrlEvent, 0) != FALSE);
+        FreeConsole();
+    }
+
+    if (consoleDetached)
+    {
+        // Create a new console if previous was deleted by OS
+        if (AttachConsole(thisConsoleId) == FALSE)
+        {
+            int errorCode = GetLastError();
+            if (errorCode == 31) // 31=ERROR_GEN_FAILURE
+            {
+                AllocConsole();
+            }
+        }
+    }
+    return success;
+}
+#endif

client/utils.h

@@ -4,18 +4,19 @@
 #include <QRegExp>
 #include <QString>
 
+#ifdef Q_OS_WIN
+#include "Windows.h"
+#endif
+
 class Utils {
 
 public:
     static QString configPath();
     static QString defaultVpnConfigFileName();
     static QString executable(const QString& baseName, bool absPath);
-    static QString serverName();
     static QString systemLogPath();
-    static QString toString(bool value);
     static bool createEmptyFile(const QString& path);
     static bool initializePath(const QString& path);
-    static bool processIsRunning(const QString& fileName);
 
     static QString getIPAddress(const QString& host);
     static QString getStringBetween(const QString& s, const QString& a, const QString& b);
@@ -23,6 +24,13 @@ public:
     static QRegExp ipAddressRegExp() { return QRegExp("^((25[0-5]|(2[0-4]|1[0-9]|[1-9]|)[0-9])(\\.(?!$)|$)){4}$"); }
     static QRegExp ipAddressPortRegExp() { return QRegExp("^(?:(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])\\.){3}"
         "(?:25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9][0-9]|[0-9])(\\:[0-9]{1,5}){0,1}$"); }
+
+    static bool processIsRunning(const QString& fileName);
+    static void killProcessByName(const QString &name);
+
+#ifdef Q_OS_WIN
+    static bool signalCtrl(DWORD dwProcessId, DWORD dwCtrlEvent);
+#endif
 };
 
 #endif // UTILS_H