Using DBus in Linux systems with or without GUI

[user_ask03]

I am looking into using DBus to catch power events on Linux such as sleep, hibernate and wakeup using PrepareForSleep() and PrepareForShutdown() signals. I have two main requirements:

1. The approach must work for systems that have GUI or are purely console based
2. Work for both Linux desktop and laptop systems

Is DBus the right approach or are there any other ways to go?