All abstracted communication functions. Do not depend on the underlying
inter process communication mechanism.
- send_command(): client function: sends a command to cinit
- send_service(): client function: send the service name to operate on
- read_command(): server function: reads beginning of a command
* Extracts the command
* reads client identification (=pid)
* calls other functions, depending on the command send => switch()
- read_service(): server function: reads service
- write_answer(): server function: answer?
* sends answers to clients => senseful?
TODO:
- define information function, that returns various information about
a service
