- Extend the inplace zone parser to detect violations of the RFC 1035 section 5.2 requirement that a zonefile consist of exactly one class, enabled by default, and extend its error reporting to say what the wrong and expected classes were (and also use this contextual error support for other errors where applicable).
- Remove the default IN last class and allow the last class to be set if needed, as RFC 1035 doesn't define a default class.
Add XFR middleware and:
- Fixes a bug where the incorrect owner name was passed to the zone walker callback.
- New `ixfr-client.rs` example.
- Updated `serve-zone.rs` example demonstrating TSIG authenticated XFR and NOTIFY middlewares.
- Additional From impls for CallResult.
- Renames ZoneDiff to InMemoryZoneDiff.
- Renames ZoneDiffBuilder to InMemoryZoneDiffBuilder.
- Introduces new ZoneDiff and related traits.
- Adds AnswerContent::first().
This PR adds zonefile/parsed.rs, zonetree/ and related examples/, which
together enable, and show a library user how, to go from a zone file in
presentation format to an in-memory tree of zones which can be queried to
provide an answer, or walked (iterated over).
The tree also supports versioned write operations and a trait based zone
implementation allowing for the in-memory tree for a zone to instead be some
other (a)synchornous backing store (as demonstrated by the mysql-zone.rs
example).
The zonetree module is feature-gated behind the unstable-zonetree feature.
This PR fixes scanning (i.e., reading from presentation format) of domain
names that are just the root label. It also fixes how they are displayed:
previously they were empty, now they are displayed as a dot. It also adds a
new method Dname::fmt_with_dot that returns a placeholder type that displays
the name with a dot at the end.
This commit completely redesigns zone file parsing. The primary change is to
convert the scanner into a trait in order to allow multiple zone parser
implementations for different sources and purposes. A number of changes had
to be made in order to make this possible.
The commit also contains an initial implementation of a scanner that modifies
data in-place and can thus returned parsed data with only a minimal amount
of additional allocations. While working, this scanner is more a
proof-of-concept at this point to ensure that the API design is sound.
This commit is based on ideas and code proposed by @not-my-profile in #106.
This commit increases the minimal supported Rust version to 1.59.0.
