This patch adds a Clear method to the domaininfo database, which removes
information for the given domain.
This can be used to manually make the server forget about a domain, in
case there are operational reasons to do so.
Today, this is done via chasquid-util (which removes the backing file),
but that is hacky, and this is part of replacing it with a cleaner
implementation.
This patch changes several internal packages to receive and pass tracing
annotations, making use of the new tracing library, so we can have
better debugging information.
This patch adds tracing for the auth and domaininfo modules. In the
latter, we replace the long-running event with the short-term request
tracing, which is more practical and useful.
There are no logic changes, it only adds tracing instrumentation to help
troubleshooting.
There is a new protobuf library (and corresponding code generator) for
Go: google.golang.org/protobuf.
It is fairly compatible with the previous v1 API
(github.com/golang/protobuf), but there are some changes.
This patch adjusts the code and generated files to the new API.
The on-wire/on-disk format remains unchanged so this should be
transparent to the users.
This patch makes chasquid reload domaininfo periodically, so it notices
any external changes made to it.
It is in line with what we do for aliases and authentication already,
and makes it possible for external removals an additions to the
domaininfo database to be picked up without a restart.
This patch adds a missing docstrings for exported identifiers, and
adjust some of the existing ones to match the standard style.
In some cases, the identifiers were un-exported after noticing they had
no external users.
Besides improving documentation, it also reduces the linter noise
significantly.
This patch introduces a new "domaininfo" package, which implements a
database with information about domains. In particular, it tracks
incoming and outgoing security levels.
That information is used in incoming and outgoing SMTP to prevent
downgrades.
