Detect uknown command line parameters.

src/main.cpp

@@ -114,6 +114,7 @@ struct QBtCommandLineParameters
 #endif
     int webUiPort;
     QStringList torrents;
+    QString uknownParameter;
 
     QBtCommandLineParameters()
         : showHelp(false)
@@ -154,6 +155,12 @@ int main(int argc, char *argv[])
 
     const QBtCommandLineParameters params = parseCommandLine();
 
+    if (!params.uknownParameter.isEmpty()) {
+        displayBadArgMessage(QObject::tr("%1 is an uknown command line parameter.", "--random-parameter is an uknown command line parameter.")
+                             .arg(params.uknownParameter));
+        return EXIT_FAILURE;
+    }
+
 #ifndef Q_OS_WIN
     if (params.showVersion) {
         if (isOneArg) {
@@ -292,6 +299,9 @@ QBtCommandLineParameters parseCommandLine()
     for (int i = 1; i < appArguments.size(); ++i) {
         const QString& arg = appArguments[i];
 
+        if ((arg.startsWith("--") && !arg.endsWith(".torrent")) ||
+            (arg.startsWith("-") && arg.size() == 2)) {
+            //Parse known parameters
             if ((arg == QLatin1String("-h")) || (arg == QLatin1String("--help"))) {
                 result.showHelp = true;
             }
@@ -314,6 +324,12 @@ QBtCommandLineParameters parseCommandLine()
                 result.shouldDaemonize = true;
             }
 #endif
+            else {
+                //Uknown argument
+                result.uknownParameter = arg;
+                break;
+            }
+        }
         else {
             QFileInfo torrentPath;
             torrentPath.setFile(arg);