mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
#!/usr/bin/python3
|
|
# Generate DNS RR type constants for resolv header files.
|
|
# Copyright (C) 2016-2017 Free Software Foundation, Inc.
|
|
# This file is part of the GNU C Library.
|
|
#
|
|
# The GNU C Library is free software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU Lesser General Public
|
|
# License as published by the Free Software Foundation; either
|
|
# version 2.1 of the License, or (at your option) any later version.
|
|
#
|
|
# The GNU C Library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with the GNU C Library; if not, see
|
|
# <http://www.gnu.org/licenses/>.
|
|
|
|
"""Generate DNS RR type constants for resolv header files.
|
|
|
|
resolv/arpa/nameser.h and resolv/arpa/nameser_compat.h contain lists
|
|
of RR type constants. This script downloads the current definitions
|
|
from the IANA DNS Parameters protocol registry and translates it into
|
|
the two different lists.
|
|
|
|
Two lists are written to standard output. The first one contains enum
|
|
constants for resolv/arpa/nameser.h. The second one lists the
|
|
preprocessor macros for resolv/arpa/nameser_compat.h.
|
|
|
|
"""
|
|
|
|
# URL of the IANA registry.
|
|
source = "http://www.iana.org/assignments/dns-parameters/dns-parameters-4.csv"
|
|
|
|
import collections
|
|
import csv
|
|
import io
|
|
import urllib.request
|
|
|
|
Type = collections.namedtuple("Type", "name number comment")
|
|
|
|
def get_types(source):
|
|
for row in csv.reader(io.TextIOWrapper(urllib.request.urlopen(source))):
|
|
if row[0] in ('TYPE', 'Unassigned', 'Private use', 'Reserved'):
|
|
continue
|
|
name, number, comment = row[:3]
|
|
if name == '*':
|
|
name = 'ANY'
|
|
comment = 'request for all cached records'
|
|
number = int(number)
|
|
yield Type(name, number, comment)
|
|
|
|
types = list(get_types(source))
|
|
|
|
print("// enum constants for resolv/arpa/nameser.h")
|
|
print()
|
|
for typ in types:
|
|
name = typ.name.replace("-", "_").lower()
|
|
print(" ns_t_{0} = {1.number},".format(name, typ))
|
|
print()
|
|
|
|
print("// macro aliases resolv/arpa/nameser_compat.h")
|
|
print()
|
|
for typ in types:
|
|
name = typ.name.replace("-", "_")
|
|
print("#define T_{0} ns_t_{1}".format(name.upper(), name.lower()))
|
|
print()
|