Files
firezone/rust/connlib
Reactor Scram a10d76c525 chore(linux): revert /etc/resolv.conf on exit if we changed it to control DNS (#4148)
This isn't really user-facing, so I marked it down from `feat` to
`chore`. Closes #3817

- If we exit gracefully, `/etc/resolv.conf` is reverted
- We always keep the `.before-firezone` backup in case we lose power and
the revert transaction is corrupted or rolled back
- We use a magic header to detect whether the last run was a crash or
not. If Firezone crashes and the user wants to modify their default DNS,
they need to delete that header so that Firezone won't accidentally
revert its backup and trash their change.
- All error variants for this module replaced with `anyhow::Error` since
they were never matched by callers.

I ran `cargo mutants` locally and it helped me validate the unit tests
and it picked up a `match` branch that I forgot to delete.

```[tasklist]
- [x] (Failed: Integration tests didn't like it) ~~Add the system default resolvers below Firezone's sentinels~~
- [x] `tracing::info` "Last run crashed" if we have to revert the file at startup
```

---------

Signed-off-by: Reactor Scram <ReactorScram@users.noreply.github.com>
2024-03-18 16:29:25 +00:00
..

Connlib

Firezone's connectivity library shared by all clients.

Building Connlib

You shouldn't need to build connlib directly; it's typically built as a dependency of one of the other Firezone components. See READMEs in those directories for relevant instructions.