1. go-smtp is replaced by a fork that reverts StartTLS removal.
2. SASL LOGIN is no longer supported by upstream go-sasl, readded disabled by default.
3. Updated endpoint code to match new go-smtp authentication interfaces.
4. certmagic repo had some renames
5. Minimum Go version increased to 1.23 to match dependencies.
Now imapsql module does not handle authentication. (it was not doing it so well
anyway)
sql_table module was introduced and used in the default configuration as
a replacement for functionality that was implemented by imapsql before.
Parts of maddyctl code were rewritten to make it work transparently with
any IMAP backend or credentials store.
Closes#212.
The authentication provider can now provide multiple authorization
identities associated with credentials. Protocols that support that
(e.g. JMAP, SASL) can let the client select the wanted identity.
There is abstraction 'updates pipe' defined for future use with
configuration involving IMAP data replication (e.g. multiple nodes with
maddy instances + PostgreSQL replicas + S3 bucket for messages).
However, for the case of local SQLite3 DB, limited UDS-based
implementation is provided. It solves the problem of maddyctl not being
able to tell the server about modifications it makes. Alternative to
this approach would be to have server actually perform operations and
maddyctl being a dumb API client, but this requires a lot more complex
IPC interface and will not work when the server is down.
The intention is to keep to repo root clean while the list of packages
is slowly growing.
Additionally, a bunch of small (~30 LoC) files in the repo root is
merged into a single maddy.go file, for the same reason.
Most of the internal code is moved into the internal/ directory. Go
toolchain will make it impossible to import these packages from external
applications.
Some packages are renamed and moved into the pkg/ directory in the root.
According to https://github.com/golang-standards/project-layout this is
the de-facto standard to place "library code that's ok to use by
external applications" in.
To clearly define the purpose of top-level directories, README.md files
are added to each.
