43: More config options, better logging, improve security, abstractions

- Added `HAVE_SAFE_REMEMBERAUTH` config option
- Added `HAVE_REMEMBERAUTH_AUTODIR` config option
- Add the `FATAL` macro for fatal error message formatting
- Add better logging
- Improve security of permissions on directories
- Move default `kos` dir to `/var/db/kos` rather than `/var/kos`
- Cross of a TODO item

Signed-off-by: Ari Archer <[email protected]>

42: Fix completions, improve permissions, add editorconfig

Signed-off-by: Ari Archer <[email protected]>

Add setegid() and seteuid()

Signed-off-by: Ari Archer <[email protected]>

Improve time verification and remove MAX_UID config option

Signed-off-by: Ari Archer <[email protected]>

Introduce input_no_echo_internal

Signed-off-by: Ari Archer <[email protected]>

Do a whole bunch of optimisations

Signed-off-by: Ari Archer <[email protected]>

Fix the default config

Signed-off-by: Ari Archer <[email protected]>

Fix a bug (see more in description)

If you have HAVE_REMEMBERAUTH enabled, it
would give you one last command to run before it removes
the auth remember file, meaning if you left your computer
there for hours, then came back and your timeout is
300s (5 minutes) you could still run a command, fixed
by checking it 2 seperate times using a macro, once in
password verification, other time in running the command,
the part where it gets removed

Signed-off-by: Ari Archer <[email protected]>

Fix the types

Signed-off-by: Ari Archer <[email protected]>

Add docs for preserving auth

Signed-off-by: Ari Archer <[email protected]>