Drop root privileges after listening

[Acconut]

bud should drop root privileges (if running as root) after it started to listen.

[indutny]

I see a problem with a current implementation that is so far preventing me from doing it: every worker is reading cert/key from a file system at start. The proper solution would require transferring cert/key from a master to a worker via IPC pipe. Need to seriously consider it...

[indutny]

Actually, this is a bit over the top for now (transferring cert/key over IPC), the correct steps to implement it would be:

1. Add user and group options to the config.c/config.h
2. Translate user and group to uid and gid in config.c.
3. Use setgid()/setuid()

The user should be responsible for setting proper permissions on the cert/key files.

[indutny]

@Acconut any luck with this?

[Acconut]

Yesterday I had no time and now I'm trying to find the source of the segmentation fault. :)

[indutny]

ping @Acconut ;)

[indutny]

it has actually landed.