Revert "(experimental) force to use custom dns"

This reverts commit 2a6a5e62d4.
2019-04-28 18:11:11 +02:00
parent 2a6a5e62d4
commit 1747bc98db
100 changed files with 2 additions and 15717 deletions
--- a/lib/dns/opcode.py
+++ b/lib/dns/opcode.py
@@ -1,119 +0,0 @@
-# Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license
-
-# Copyright (C) 2001-2017 Nominum, Inc.
-#
-# Permission to use, copy, modify, and distribute this software and its
-# documentation for any purpose with or without fee is hereby granted,
-# provided that the above copyright notice and this permission notice
-# appear in all copies.
-#
-# THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
-# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-"""DNS Opcodes."""
-
-import dns.exception
-
-#: Query
-QUERY = 0
-#: Inverse Query (historical)
-IQUERY = 1
-#: Server Status (unspecified and unimplemented anywhere)
-STATUS = 2
-#: Notify
-NOTIFY = 4
-#: Dynamic Update
-UPDATE = 5
-
-_by_text = {
-    'QUERY': QUERY,
-    'IQUERY': IQUERY,
-    'STATUS': STATUS,
-    'NOTIFY': NOTIFY,
-    'UPDATE': UPDATE
-}
-
-# We construct the inverse mapping programmatically to ensure that we
-# cannot make any mistakes (e.g. omissions, cut-and-paste errors) that
-# would cause the mapping not to be true inverse.
-
-_by_value = {y: x for x, y in _by_text.items()}
-
-
-class UnknownOpcode(dns.exception.DNSException):
-    """An DNS opcode is unknown."""
-
-
-def from_text(text):
-    """Convert text into an opcode.
-
-    *text*, a ``text``, the textual opcode
-
-    Raises ``dns.opcode.UnknownOpcode`` if the opcode is unknown.
-
-    Returns an ``int``.
-    """
-
-    if text.isdigit():
-        value = int(text)
-        if value >= 0 and value <= 15:
-            return value
-    value = _by_text.get(text.upper())
-    if value is None:
-        raise UnknownOpcode
-    return value
-
-
-def from_flags(flags):
-    """Extract an opcode from DNS message flags.
-
-    *flags*, an ``int``, the DNS flags.
-
-    Returns an ``int``.
-    """
-
-    return (flags & 0x7800) >> 11
-
-
-def to_flags(value):
-    """Convert an opcode to a value suitable for ORing into DNS message
-    flags.
-
-    *value*, an ``int``, the DNS opcode value.
-
-    Returns an ``int``.
-    """
-
-    return (value << 11) & 0x7800
-
-
-def to_text(value):
-    """Convert an opcode to text.
-
-    *value*, an ``int`` the opcode value,
-
-    Raises ``dns.opcode.UnknownOpcode`` if the opcode is unknown.
-
-    Returns a ``text``.
-    """
-
-    text = _by_value.get(value)
-    if text is None:
-        text = str(value)
-    return text
-
-
-def is_update(flags):
-    """Is the opcode in flags UPDATE?
-
-    *flags*, an ``int``, the DNS message flags.
-
-    Returns a ``bool``.
-    """
-
-    return from_flags(flags) == UPDATE