Fix I2P child-process bug

i2p-controller.cpp

@@ -2,9 +2,15 @@
 #include "prog-constains.h"
 #include "locales.h"
 
+#if defined(Q_OS_LINUX)
+#include <sys/prctl.h>
+#include <signal.h>
+#endif
+
 I2PController::I2PController(QObject *parent)
     : QObject(parent)
 {
+    i2p.setWorkingDirectory(I2P_INSTALL_PATH);
     this->isFatalErrored = false;
 
     connect(&i2p, &QProcess::errorOccurred,
@@ -14,7 +20,8 @@ I2PController::I2PController(QObject *parent)
             this, &I2PController::onProcessFinished);
 
     connect(&i2p, &QProcess::readyReadStandardOutput, this, [this]() {
-        qDebug() << "[i2pd]" << i2p.readAllStandardOutput();
+        // Logging I2P
+        //qDebug() << "[i2pd]" << i2p.readAllStandardOutput();
     });
 
     connect(&i2p, &QProcess::readyReadStandardError, this, [this]() {
@@ -42,6 +49,18 @@ I2PController::I2PController(QObject *parent)
     });
 }
 
+I2PController::~I2PController()
+{
+    if (i2p.state() != QProcess::NotRunning)
+    {
+        i2p.terminate();
+        i2p.waitForFinished(3000);
+
+        if (i2p.state() != QProcess::NotRunning)
+            i2p.kill();
+    }
+}
+
 void I2PController::start() {
     if (i2p.state() != QProcess::NotRunning)
     {
@@ -49,6 +68,13 @@ void I2PController::start() {
         return;
     }
 
+    #if defined(Q_OS_LINUX)
+        // If SIGKILL on Linux
+        i2p.setChildProcessModifier([]() {
+            prctl(PR_SET_PDEATHSIG, SIGTERM);
+        });
+    #endif
+
     QStringList args;
     #if defined(Q_OS_WIN)
     this->i2p.start(QDir(I2P_INSTALL_PATH).filePath("i2pd.exe"), args);
@@ -61,6 +87,7 @@ void I2PController::start() {
          << "--tunconf" << QDir(configsFolder).filePath("tunnels.conf")
          << "--log" << QDir(logsFolder).filePath("i2pd.log");
 
+    //qDebug() << "i2pd args:" << args;
     this->i2p.start(QDir(I2P_INSTALL_PATH).filePath("i2pd"), args);
     #else
     #endif

i2p-controller.h

@@ -12,6 +12,7 @@ class I2PController : public QObject
     Q_OBJECT
 public:
     I2PController(QObject *parent = nullptr);
+    ~I2PController();
     void start();
 private:
     QProcess i2p;