Use a daemon to avoid authentication and permission changes

[retrixe]

We could write a daemon that the extension can talk to, to get boot entries and to reboot into a different boot entry. This will avoid needing a password prompt every time and avoid changing grub.cfg's permissions (which seems like an undesirable system change to me).

• The daemon can be written in Python (which we can assume to be installed on most distributions by default).
• We can install a systemd service file to /etc/systemd/system which can run the Python daemon.
• The extension could talk to the daemon via TCP, Unix socket, or most preferably using D-Bus.
• Instead of asking the user to change grub.cfg permissions, we can have a button to install the daemon's service file (the Python code can remain in the extension folder itself).
• We could provide a setting for people who don't want to use such a daemon as well and retain the current code (but that will increase maintenance burden).

I would be interested in submitting a PR for this when I have free time to do so, just looking for feedback about the idea.

[Nova1545]

This is a great idea. I agree that changing grub.cfg permission is undesirable system change to people (For me it doesn't matter). Not needing a password to reboot would be far less annoying. I think keeping the current code (at least for now) is a good idea, if it becomes to much of a hassle to maintain then we can remove it

A system daemon written in Python using D-Bus sounds perfect. Based off the GJS docs you can (I think) interact with D-Bus directly from the extension

The extension should also still pass on the Gnome Extension page aswell.

And PR would be greatly welcomed!

[Nova1545]

This may also be the solution to #2