This commit updates the uses of math/rand to math/rand/v2, which was
released in Go 1.22 (2024-02).
The new package is generally safer, see https://go.dev/blog/randv2 for
the details.
There are no user-visible changes, it is only adjusting the name of
functions, simplify some code thanks to v2 having a better API, etc.
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 is the result of running Go 1.19's `gofmt` on the codebase,
which automatically updates all Go doc comments to the new format.
https://tip.golang.org/doc/go1.19#go-doc
Some deployments already have users that authenticate without a domain.
Today, we refuse to even consider those, and reject them at parsing time.
However, it is a use-case worth supporting, at least with some
restrictions that make the complexity manageable.
This patch changes the auth package to support authenticating users
without an "@domain" part.
Those requests will always be directly passed on to the fallback
authenticator, if available.
The dovecot fallback authenticator can already handle this case just fine.
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.
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 adds a new package which implements two basic primitives for
authenticating against dovecot ("user exists", and "check password").
It is still experimental/work in progress.
This patch implements an Authenticator type, which connections use to
do authentication and user existence checks.
It simplifies the abstractions (the server doesn't need to know about
userdb, or keep track of domain-userdb maps), and lays the foundation
for other types of authentication backends which will come in later
patches.
We should ignore the domains' case, and treat them uniformly, specially when it
comes to local domains.
This patch extends the existing normalization (IDNA, keeping domains as
UTF8 internally) to include case conversion and NFC form for
consistency.
This patch implements local username normalization using PRECIS
(https://tools.ietf.org/html/rfc7564,
https://tools.ietf.org/html/rfc7613)
It makes chasquid accept local email and authentication regardless of
the case. It covers both userdb and aliases.
Note that non-local usernames remain untouched.
This patch implements the AUTH SMTP command, using per-domain user databases.
Note that we don't really use or check the validation for anything, this is
just implementing the command itself.
