Package dns :: Module tsigkeyring |
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# Source Code for Module dns.tsigkeyring

     1  # Copyright (C) 2003-2007, 2009-2011 Nominum, Inc.
     2  #
     3  # Permission to use, copy, modify, and distribute this software and its
     4  # documentation for any purpose with or without fee is hereby granted,
     5  # provided that the above copyright notice and this permission notice
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     8  # THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
     9  # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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    14  # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
    15
    16  """A place to store TSIG keys."""
    17
    18  from dns._compat import maybe_decode, maybe_encode
    19
    20  import base64
    21
    22  import dns.name
    23
    24
    25 -def from_text(textring):
    26      """Convert a dictionary containing (textual DNS name, base64 secret) pairs
    27      into a binary keyring which has (dns.name.Name, binary secret) pairs.
    28      @rtype: dict"""
    29
    30      keyring = {}
    31      for keytext in textring:
    32          keyname = dns.name.from_text(keytext)
    33          secret = base64.decodestring(maybe_encode(textring[keytext]))
    34          keyring[keyname] = secret
    35      return keyring
    36
    37
    38 -def to_text(keyring):
    39      """Convert a dictionary containing (dns.name.Name, binary secret) pairs
    40      into a text keyring which has (textual DNS name, base64 secret) pairs.
    41      @rtype: dict"""
    42
    43      textring = {}
    44      for keyname in keyring:
    45          keytext = maybe_decode(keyname.to_text())
    46          secret = maybe_decode(base64.encodestring(keyring[keyname]))
    47          textring[keytext] = secret
    48      return textring
    49