Add high-level function for calling the daemon if it is open

daemon/1shared.go

@@ -5,3 +5,13 @@ import (
 )
 
 var binPath, _ = os.Executable() // store binary path
+
+// daemonIsOpen checks if the socket/named pipe for the rcw
+// daemon exists and returns a boolean indicator.
+func daemonIsOpen() bool {
+	fileInfo, err := os.Stat(socketPath)
+	if err != nil {
+		return false
+	}
+	return !fileInfo.IsDir()
+}