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| # Copyright (C) Dnspython Contributors, see LICENSE for text of ISC license | |
| # Copyright (C) 2003-2007, 2009-2011 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. | |
| """A place to store TSIG keys.""" | |
| import base64 | |
| from typing import Any, Dict | |
| import dns.name | |
| import dns.tsig | |
| def from_text(textring: Dict[str, Any]) -> Dict[dns.name.Name, dns.tsig.Key]: | |
| """Convert a dictionary containing (textual DNS name, base64 secret) | |
| pairs into a binary keyring which has (dns.name.Name, bytes) pairs, or | |
| a dictionary containing (textual DNS name, (algorithm, base64 secret)) | |
| pairs into a binary keyring which has (dns.name.Name, dns.tsig.Key) pairs. | |
| @rtype: dict""" | |
| keyring = {} | |
| for name, value in textring.items(): | |
| kname = dns.name.from_text(name) | |
| if isinstance(value, str): | |
| keyring[kname] = dns.tsig.Key(kname, value).secret | |
| else: | |
| (algorithm, secret) = value | |
| keyring[kname] = dns.tsig.Key(kname, secret, algorithm) | |
| return keyring | |
| def to_text(keyring: Dict[dns.name.Name, Any]) -> Dict[str, Any]: | |
| """Convert a dictionary containing (dns.name.Name, dns.tsig.Key) pairs | |
| into a text keyring which has (textual DNS name, (textual algorithm, | |
| base64 secret)) pairs, or a dictionary containing (dns.name.Name, bytes) | |
| pairs into a text keyring which has (textual DNS name, base64 secret) pairs. | |
| @rtype: dict""" | |
| textring = {} | |
| def b64encode(secret): | |
| return base64.encodebytes(secret).decode().rstrip() | |
| for name, key in keyring.items(): | |
| tname = name.to_text() | |
| if isinstance(key, bytes): | |
| textring[tname] = b64encode(key) | |
| else: | |
| if isinstance(key.secret, bytes): | |
| text_secret = b64encode(key.secret) | |
| else: | |
| text_secret = str(key.secret) | |
| textring[tname] = (key.algorithm.to_text(), text_secret) | |
| return textring | |