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-rw-r--r--doc/arm/_ext/iscconf.py605
-rw-r--r--doc/arm/_ext/mergegrammar.py63
-rw-r--r--doc/arm/_ext/namedconf.py35
-rw-r--r--doc/arm/_ext/rndcconf.py36
4 files changed, 739 insertions, 0 deletions
diff --git a/doc/arm/_ext/iscconf.py b/doc/arm/_ext/iscconf.py
new file mode 100644
index 0000000..b5bd966
--- /dev/null
+++ b/doc/arm/_ext/iscconf.py
@@ -0,0 +1,605 @@
+############################################################################
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+############################################################################
+
+"""
+Sphinx domains for ISC configuration files.
+
+Use setup() to install new Sphinx domains for ISC configuration files.
+
+This extension is based on combination of two Sphinx extension tutorials:
+https://www.sphinx-doc.org/en/master/development/tutorials/todo.html
+https://www.sphinx-doc.org/en/master/development/tutorials/recipe.html
+"""
+
+from collections import namedtuple
+
+from docutils.parsers.rst import Directive, directives
+from docutils import nodes
+
+from sphinx import addnodes
+from sphinx.directives import ObjectDescription
+from sphinx.domains import Domain
+from sphinx.roles import XRefRole
+from sphinx.util import logging
+from sphinx.util.nodes import make_refnode
+
+import checkgrammar
+
+
+logger = logging.getLogger(__name__)
+
+
+def split_csv(argument, required):
+ argument = argument or ""
+ outlist = list(filter(len, (s.strip() for s in argument.split(","))))
+ if required and not outlist:
+ raise ValueError(
+ "a non-empty list required; provide at least one value or remove"
+ " this option"
+ )
+ return outlist
+
+
+# pylint: disable=too-many-statements
+def domain_factory(domainname, domainlabel, todolist, grammar):
+ """
+ Return parametrized Sphinx domain object.
+ @param domainname Name used when referencing domain in .rst: e.g. namedconf
+ @param confname Humand-readable name for texts, e.g. named.conf
+ @param todolist A placeholder object which must be pickable.
+ See StatementListDirective.
+ """
+
+ class StatementListDirective(Directive):
+ """A custom directive to generate list of statements.
+ It only installs placeholder which is later replaced by
+ process_statementlist_nodes() callback.
+ """
+
+ option_spec = {
+ "filter_blocks": lambda arg: split_csv(arg, required=True),
+ "filter_tags": lambda arg: split_csv(arg, required=True),
+ }
+
+ def run(self):
+ placeholder = todolist("")
+ placeholder["isc_filter_tags"] = set(self.options.get("filter_tags", []))
+ placeholder["isc_filter_blocks"] = set(
+ self.options.get("filter_blocks", [])
+ )
+ return [placeholder]
+
+ class ISCConfDomain(Domain):
+ """
+ Custom Sphinx domain for ISC config.
+ Provides .. statement:: directive to define config statement and
+ .. statementlist:: to generate summary tables.
+ :ref:`statementname` works as usual.
+
+ See https://www.sphinx-doc.org/en/master/extdev/domainapi.html
+ """
+
+ class StatementDirective(ObjectDescription):
+ """
+ A custom directive that describes a statement,
+ e.g. max-cache-size.
+ """
+
+ has_content = True
+ required_arguments = 1
+ option_spec = {
+ "tags": lambda arg: split_csv(arg, required=False),
+ # one-sentece description for use in summary tables
+ "short": directives.unchanged_required,
+ "suppress_grammar": directives.flag,
+ }
+
+ @property
+ def isc_name(self):
+ names = self.get_signatures()
+ if len(names) != 1:
+ raise NotImplementedError(
+ "statements with more than one name are not supported", names
+ )
+ return names[0]
+
+ def handle_signature(self, sig, signode):
+ signode += addnodes.desc_name(text=sig)
+ return sig
+
+ def add_target_and_index(self, _name_cls, sig, signode):
+ signode["ids"].append(domainname + "-statement-" + sig)
+
+ iscconf = self.env.get_domain(domainname)
+ iscconf.add_statement(
+ sig, self.isc_tags, self.isc_short, self.isc_short_node, self.lineno
+ )
+
+ @property
+ def isc_tags(self):
+ return set(self.options.get("tags", []))
+
+ @property
+ def isc_short(self):
+ return self.options.get("short", "")
+
+ @property
+ def isc_short_node(self):
+ """Short description parsed from rst to docutils node"""
+ return self.parse_nested_str(self.isc_short)
+
+ def format_path(self, path):
+ assert path[0] == "_top"
+ if len(path) == 1:
+ return "topmost"
+ return ".".join(path[1:])
+
+ def format_paths(self, paths):
+ zone_types = set()
+ nozone_paths = []
+ for path in paths:
+ try:
+ zone_idx = path.index("zone")
+ zone_type_txt = path[zone_idx + 1]
+ if zone_type_txt.startswith("type "):
+ zone_types.add(zone_type_txt[len("type ") :])
+ else:
+ assert zone_type_txt == "in-view"
+ zone_types.add(zone_type_txt)
+ except (ValueError, IndexError):
+ nozone_paths.append(path)
+ condensed_paths = nozone_paths[:]
+ if zone_types:
+ condensed_paths.append(
+ ("_top", "zone (" + ", ".join(sorted(zone_types)) + ")")
+ )
+ condensed_paths = sorted(condensed_paths, key=len)
+ return list(self.format_path(path) for path in condensed_paths)
+
+ def format_blocks(self, grammar_blocks):
+ """Generate node with list of all allowed blocks"""
+ blocks = nodes.paragraph()
+ blocks += nodes.strong(text="Blocks: ")
+ blocks += nodes.Text(", ".join(self.format_paths(grammar_blocks)))
+ return blocks
+
+ def format_grammar(self, list_blocks, grammar_grp):
+ """
+ Generate grammar description node, optionally with list of
+ blocks accepting this particular grammar.
+ Example: Grammar (block1, block2): grammar;
+ """
+ grammarnode = nodes.paragraph()
+ if list_blocks:
+ separator = " "
+ paths = ", ".join(
+ self.format_paths(variant.path for variant in grammar_grp)
+ )
+ else:
+ separator = ""
+ paths = ""
+ subgrammar = grammar_grp[0].subgrammar
+ subgrammar_txt = checkgrammar.pformat_grammar(subgrammar).strip()
+ grammar_txt = subgrammar.get("_pprint_name", self.isc_name)
+ if subgrammar_txt != ";":
+ grammar_txt += " "
+ grammar_txt += subgrammar_txt
+ if "\n" in grammar_txt.strip():
+ nodetype = nodes.literal_block
+ else:
+ nodetype = nodes.literal
+ grammarnode += nodes.strong(text=f"Grammar{separator}{paths}: ")
+ grammarnode += nodetype(text=grammar_txt)
+ return grammarnode
+
+ def format_warnings(self, flags):
+ """Return node with a warning box about deprecated and
+ experimental options"""
+ warn = nodes.warning()
+ if "deprecated" in flags:
+ warn += nodes.paragraph(
+ text=(
+ "This option is deprecated and will be removed in a future"
+ " version of BIND."
+ )
+ )
+ if "experimental" in flags:
+ warn += nodes.paragraph(
+ text="This option is experimental and subject to change."
+ )
+ return warn
+
+ def parse_nested_str(self, instr):
+ """Parse string as nested rst syntax and produce a node"""
+ raw = nodes.paragraph(text=instr)
+ parsed = nodes.paragraph()
+ self.state.nested_parse(raw, self.content_offset, parsed)
+ return parsed
+
+ def transform_content(self, contentnode: addnodes.desc_content) -> None:
+ """autogenerate content from structured data"""
+ self.workaround_transform_content = True
+ if self.isc_short:
+ contentnode.insert(0, self.isc_short_node)
+ if self.isc_tags:
+ tags = nodes.paragraph()
+ tags += nodes.strong(text="Tags: ")
+ tags += nodes.Text(", ".join(self.isc_tags))
+ contentnode.insert(0, tags)
+
+ iscconf = self.env.get_domain(domainname)
+
+ name = self.isc_name
+ if name not in iscconf.statement_blocks:
+ return # not defined in grammar, nothing to render
+
+ blocks = self.format_blocks(iscconf.statement_blocks[name])
+ contentnode.insert(0, blocks)
+
+ grammars = iscconf.statement_grammar_groups[name]
+ multi_grammar = len(grammars) > 1
+ union_flags = set()
+ for grammar_grp in grammars:
+ for one_grammar_dict in grammar_grp:
+ union_flags = union_flags.union(
+ set(one_grammar_dict.subgrammar.get("_flags", []))
+ )
+ if "suppress_grammar" in self.options:
+ continue
+ grammarnode = self.format_grammar(multi_grammar, grammar_grp)
+ contentnode.insert(0, grammarnode)
+
+ warn = self.format_warnings(union_flags)
+ if len(warn):
+ contentnode.insert(0, warn)
+
+ def __init__(self, *args, **kwargs):
+ """Compability with Sphinx < 3.0.0"""
+ self.workaround_transform_content = False
+ super().__init__(*args, **kwargs)
+
+ def run(self):
+ """Compability with Sphinx < 3.0.0"""
+ nodelist = super().run()
+ if not self.workaround_transform_content:
+ # get access to "contentnode" created inside super.run()
+ self.transform_content(nodelist[1][-1])
+ return nodelist
+
+ name = domainname
+ label = domainlabel
+
+ directives = {
+ "statement": StatementDirective,
+ "statementlist": StatementListDirective,
+ }
+
+ roles = {"ref": XRefRole(warn_dangling=True)}
+ initial_data = {
+ # name -> {"tags": [list of tags], ...}; see add_statement()
+ "statements": {},
+ }
+
+ indices = {} # no custom indicies
+
+ def __init__(self, *args, **kwargs):
+ super().__init__(*args, **kwargs)
+ self.grammar = grammar
+ self.statement_blocks = checkgrammar.statement2block(grammar, ["_top"])
+ self.statement_grammar_groups = checkgrammar.diff_statements(
+ self.grammar, self.statement_blocks
+ )
+
+ def get_objects(self):
+ """
+ Sphinx API:
+ Iterable of Sphinx object descriptions (tuples defined in the API).
+ """
+ for obj in self.data["statements"].values():
+ yield tuple(
+ obj[key]
+ for key in [
+ "fullname",
+ "signature",
+ "label",
+ "docname",
+ "anchor",
+ "priority",
+ ]
+ )
+
+ # pylint: disable=too-many-arguments
+ def resolve_xref(self, env, fromdocname, builder, typ, target, node, contnode):
+ """
+ Sphinx API:
+ Resolve the pending_xref *node* with the given typ and target.
+ """
+ try:
+ obj = self.data["statements"][self.get_statement_name(target)]
+ except KeyError:
+ return None
+
+ refnode = make_refnode(
+ builder,
+ fromdocname,
+ obj["docname"],
+ obj["anchor"],
+ contnode,
+ obj["anchor"],
+ )
+ return refnode
+
+ def resolve_any_xref(self, env, fromdocname, builder, target, node, contnode):
+ """
+ Sphinx API:
+ Raising NotImplementedError uses fall-back bassed on resolve_xref.
+ """
+ raise NotImplementedError
+
+ @staticmethod
+ def log_statement_overlap(new, old):
+ assert new["fullname"] == old["fullname"]
+ logger.warning(
+ "duplicite detected! %s previously defined at %s:%d",
+ new["fullname"],
+ old["filename"],
+ old["lineno"],
+ location=(new["docname"], new["lineno"]),
+ )
+
+ def get_statement_name(self, signature):
+ return "{}.{}.{}".format(domainname, "statement", signature)
+
+ def add_statement(self, signature, tags, short, short_node, lineno):
+ """
+ Add a new statement to the domain data structures.
+ No visible effect.
+ """
+ name = self.get_statement_name(signature)
+ anchor = "{}-statement-{}".format(domainname, signature)
+
+ new = {
+ "tags": tags,
+ "short": short,
+ "short_node": short_node,
+ "filename": self.env.doc2path(self.env.docname),
+ "lineno": lineno,
+ # Sphinx API
+ "fullname": name, # internal name
+ "signature": signature, # display name
+ "label": domainlabel + " statement", # description for index
+ "docname": self.env.docname,
+ "anchor": anchor,
+ "priority": 1, # search priority
+ }
+
+ if name in self.data["statements"]:
+ self.log_statement_overlap(new, self.data["statements"][name])
+ self.data["statements"][name] = new
+
+ def clear_doc(self, docname):
+ """
+ Sphinx API: like env-purge-doc event, but in a domain.
+
+ Remove traces of a document in the domain-specific inventories.
+ """
+ self.data["statements"] = dict(
+ {
+ key: obj
+ for key, obj in self.data["statements"].items()
+ if obj["docname"] != docname
+ }
+ )
+
+ def merge_domaindata(self, docnames, otherdata):
+ """Sphinx API: Merge in data regarding *docnames* from a different
+ domaindata inventory (coming from a subprocess in parallel builds).
+
+ @param otherdata is self.data equivalent from another process
+ """
+ old = self.data["statements"]
+ new = otherdata["statements"]
+ for name in set(old).intersection(set(new)):
+ self.log_statement_overlap(new[name], old[name])
+ old.update(new)
+
+ def check_consistency(self):
+ """Sphinx API"""
+ defined_statements = set(
+ obj["signature"] for obj in self.data["statements"].values()
+ )
+ statements_in_grammar = set(self.statement_blocks)
+ missing_statement_sigs = statements_in_grammar.difference(
+ defined_statements
+ )
+ for missing in missing_statement_sigs:
+ grammars = self.statement_grammar_groups[missing]
+ if len(grammars) == 1:
+ flags = grammars[0][0].subgrammar.get("_flags", [])
+ if ("obsolete" in flags) or ("test only" in flags):
+ continue
+
+ logger.warning(
+ "statement %s is defined in %s grammar but is not described"
+ " using .. statement:: directive",
+ missing,
+ domainlabel,
+ )
+
+ extra_statement_sigs = defined_statements.difference(statements_in_grammar)
+ for extra in extra_statement_sigs:
+ fullname = self.get_statement_name(extra)
+ desc = self.data["statements"][fullname]
+ logger.warning(
+ ".. statement:: %s found but matching definition in %s grammar is"
+ " missing",
+ extra,
+ domainlabel,
+ location=(desc["docname"], desc["lineno"]),
+ )
+
+ @classmethod
+ def process_statementlist_nodes(cls, app, doctree):
+ """
+ Replace todolist objects (placed into document using
+ .. statementlist::) with automatically generated table
+ of statements.
+ """
+
+ def gen_replacement_table(acceptable_blocks, acceptable_tags):
+ table_header = [
+ TableColumn("ref", "Statement"),
+ TableColumn("short_node", "Description"),
+ ]
+ tag_header = []
+ if len(acceptable_tags) != 1:
+ # tags column only if tag filter is not applied
+ tag_header = [
+ TableColumn("tags_txt", "Tags"),
+ ]
+
+ table_b = DictToDocutilsTableBuilder(table_header + tag_header)
+ table_b.append_iterable(
+ sorted(
+ filter(
+ lambda item: (
+ (
+ not acceptable_tags
+ or item["tags"].intersection(acceptable_tags)
+ )
+ and (
+ not acceptable_blocks
+ or item["block_names"].intersection(
+ acceptable_blocks
+ )
+ )
+ ),
+ iscconf.list_all(),
+ ),
+ key=lambda x: x["fullname"],
+ )
+ )
+ return table_b.get_docutils()
+
+ env = app.builder.env
+ iscconf = env.get_domain(cls.name)
+
+ for node in doctree.traverse(todolist):
+ acceptable_tags = node["isc_filter_tags"]
+ acceptable_blocks = node["isc_filter_blocks"]
+ node.replace_self(
+ gen_replacement_table(acceptable_blocks, acceptable_tags)
+ )
+
+ def list_all(self):
+ for statement in self.data["statements"].values():
+ sig = statement["signature"]
+ block_names = set(
+ path[-1] for path in self.statement_blocks.get(sig, [])
+ )
+ tags_txt = ", ".join(statement["tags"])
+
+ refpara = nodes.inline()
+ refnode = addnodes.pending_xref(
+ sig,
+ reftype="statement",
+ refdomain=domainname,
+ reftarget=sig,
+ refwarn=True,
+ )
+ refnode += nodes.Text(sig)
+ refpara += refnode
+
+ copy = statement.copy()
+ copy["block_names"] = block_names
+ copy["ref"] = refpara
+ copy["tags_txt"] = tags_txt
+ yield copy
+
+ return ISCConfDomain
+
+
+# source dict key: human description
+TableColumn = namedtuple("TableColumn", ["dictkey", "description"])
+
+
+class DictToDocutilsTableBuilder:
+ """generate docutils table"""
+
+ def __init__(self, header):
+ """@param header: [ordered list of TableColumn]s"""
+ self.header = header
+ self.table = nodes.table()
+ self.table["classes"] += ["colwidths-auto"]
+ self.returned = False
+ # inner nodes of the table
+ self.tgroup = nodes.tgroup(cols=len(self.header))
+ for _ in range(len(self.header)):
+ # ignored because of colwidths-auto, but must be present
+ colspec = nodes.colspec(colwidth=1)
+ self.tgroup.append(colspec)
+ self.table += self.tgroup
+ self._gen_header()
+
+ self.tbody = nodes.tbody()
+ self.tgroup += self.tbody
+
+ def _gen_header(self):
+ thead = nodes.thead()
+
+ row = nodes.row()
+ for column in self.header:
+ entry = nodes.entry()
+ entry += nodes.paragraph(text=column.description)
+ row += entry
+
+ thead.append(row)
+ self.tgroup += thead
+
+ def append_iterable(self, objects):
+ """Append rows for each object (dict), ir order.
+ Extract column values from keys listed in self.header."""
+ for obj in objects:
+ row = nodes.row()
+ for column in self.header:
+ entry = nodes.entry()
+ value = obj[column.dictkey]
+ if isinstance(value, str):
+ value = nodes.paragraph(text=value)
+ else:
+ value = value.deepcopy()
+ entry += value
+ row += entry
+ self.tbody.append(row)
+
+ def get_docutils(self):
+ # guard against table reuse - that's most likely an error
+ assert not self.returned
+ self.returned = True
+ return self.table
+
+
+def setup(app, domainname, confname, docutilsplaceholder, grammar):
+ """
+ Install new parametrized Sphinx domain.
+ """
+
+ Conf = domain_factory(domainname, confname, docutilsplaceholder, grammar)
+ app.add_domain(Conf)
+ app.connect("doctree-read", Conf.process_statementlist_nodes)
+
+ return {
+ "version": "0.1",
+ "parallel_read_safe": True,
+ "parallel_write_safe": True,
+ }
diff --git a/doc/arm/_ext/mergegrammar.py b/doc/arm/_ext/mergegrammar.py
new file mode 100644
index 0000000..b0500eb
--- /dev/null
+++ b/doc/arm/_ext/mergegrammar.py
@@ -0,0 +1,63 @@
+############################################################################
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+############################################################################
+
+# Depends on CWD - Sphinx plugin
+
+import json
+from pathlib import Path
+
+import parsegrammar
+
+
+def read_zone():
+ zone_grammars = {}
+ for file in Path("../misc/").glob("*.zoneopt"):
+ # in-view is not really a zone type
+ if file.stem == "in-view":
+ zone_type = "in-view"
+ else:
+ zone_type = f"type {file.stem}"
+
+ with file.open(encoding="ascii") as fp:
+ zonegrammar = parsegrammar.parse_mapbody(fp)
+ assert len(zonegrammar) == 1
+ assert "zone" in zonegrammar
+ zone_grammars[zone_type] = zonegrammar["zone"]
+ zone_grammars[zone_type]["_pprint_name"] = "zone"
+
+ return {"zone": {"_mapbody": zone_grammars, "_ignore_this_level": True}}
+
+
+def read_main():
+ with Path("../misc/options").open(encoding="ascii") as fp:
+ optgrammar = parsegrammar.parse_mapbody(fp)
+ return optgrammar
+
+
+def combine():
+ zones = read_zone()
+ assert zones
+ rest = read_main()
+ assert rest
+ rest.update(zones)
+
+ # this is a terrible hack
+ # but cfg_test cannot print zone grammars inside view
+ rest["view"]["_mapbody"].update(zones)
+
+ return rest
+
+
+if __name__ == "__main__":
+ full_grammar = combine()
+ print(json.dumps(full_grammar))
diff --git a/doc/arm/_ext/namedconf.py b/doc/arm/_ext/namedconf.py
new file mode 100644
index 0000000..bcf4a0c
--- /dev/null
+++ b/doc/arm/_ext/namedconf.py
@@ -0,0 +1,35 @@
+############################################################################
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+############################################################################
+
+"""
+Sphinx domain "namedconf". See iscconf.py for details.
+
+"""
+from docutils import nodes
+
+import iscconf
+import mergegrammar
+
+
+class ToBeReplacedStatementList(nodes.General, nodes.Element):
+ """
+ Placeholder, does nothing, but must be picklable
+ (= cannot be in generated class).
+ """
+
+
+def setup(app):
+ grammar = mergegrammar.combine()
+ return iscconf.setup(
+ app, "namedconf", "named.conf", ToBeReplacedStatementList, grammar
+ )
diff --git a/doc/arm/_ext/rndcconf.py b/doc/arm/_ext/rndcconf.py
new file mode 100644
index 0000000..cac10e2
--- /dev/null
+++ b/doc/arm/_ext/rndcconf.py
@@ -0,0 +1,36 @@
+############################################################################
+# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+#
+# SPDX-License-Identifier: MPL-2.0
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, you can obtain one at https://mozilla.org/MPL/2.0/.
+#
+# See the COPYRIGHT file distributed with this work for additional
+# information regarding copyright ownership.
+############################################################################
+
+"""
+Sphinx domain "rndcconf". See iscconf.py for details.
+"""
+
+from docutils import nodes
+
+import iscconf
+import parsegrammar
+
+
+class ToBeReplacedStatementList(nodes.General, nodes.Element):
+ """
+ Placeholder, does nothing, but must be picklable
+ (= cannot be in a generated class).
+ """
+
+
+def setup(app):
+ with open("../misc/rndc.grammar", encoding="utf-8") as filein:
+ grammar = parsegrammar.parse_mapbody(filein)
+ return iscconf.setup(
+ app, "rndcconf", "rndc.conf", ToBeReplacedStatementList, grammar
+ )
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-20 11:05:02 +0000