This is super confusing because statement "keys" exists in context
controls and server blocks where it refers to symmetric TSIG key, and it
_also_ exists in dnssec-policy block where it specifies public-private
key pair parameters.
In an (unsuccessful) attempt to disambiguate these two I added bunch of
hyperlinks and a warning.
It would be too easy if we could just call sorted(). Thanks to zone
grammar the most important key "type" gets sorted near end, so we pull
it up to the top using a hack.
It turns out the tree of dictionaries is not the best structure to
represent our grammar, unfortunatelly. The problem is that "zone" has
several context-dependent variants which change meaning of "zone" based
on inner field "type".
Redesigning the whole structure does not seem to be worth, so I settled
on this terrible hack.
A new flag
.. namedconf:statement::
:suppress_grammar:
suppresses pretty-printing grammar.
It is useful mostly for zones because each zone has it's own grammar, so
printing all of them at once usually does not make sense.
The utility detects statements which use the same name (e.g.
max-zone-ttl) but use different grammar in different contexts. These
typically need special case in docs.
It transforms named.conf/rndc.conf grammar from text format into Python
dictionary. This allows granular access to grammar elements.
Beware: It heavity depens on cfg_test output format!
The next commit is going to add parser for ISC configuration format.
To simplify the parser the grammar files in doc/misc are no longer
line-wrapped as handling it would make the grammar parser unnecessairly
complicated.
This affects visible output in the ARM, but in the end we are going to
replace the auto-generated .rst files with grammar pretty printed, so
formatting of these files does not matter in practical terms.
The "glue-cache" option was marked as deprecated by commit
5ae33351f286feb25a965bf3c9e6b122ab495342 (first released in BIND 9.17.6,
back in October 2020), so now obsolete that option, removing all code
and documentation related to it.
Note: this causes the glue cache feature to be permanently enabled, not
disabled.
Unfortunatelly logging and zone blocks use file statements with
different semantics but the same name.
There is no sane way to disambiguate them in text, so let's remove the
link anchor from logging so we can link to the file statement in zone.
My assumption is that linking to logging { file } is very unlikely
because logging is self-contained in one block but zone config is all
over the place.
Unfortunatelly dnssec-policy and servers blocks use keys statements with
a totally different grammar and semantics but the same name.
There is no sane way to disambiguate them in text, so let's remove the
link anchors to prevent errorneous linking.
control { inet ... allow keys read-only }; are not actual statements
but in fact arguments of a statement. Remove .. namedconf:statement::
syntax to avoid collisions with other statements of the same name.
