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

     1  # Copyright (C) 2003-2007, 2009, 2010 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
     6  # appear in all copies.
     7  #
     8  # THE SOFTWARE IS PROVIDED "AS IS" AND NOMINUM DISCLAIMS ALL WARRANTIES
     9  # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
    10  # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NOMINUM BE LIABLE FOR
    11  # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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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  import base64
    19
    20  import dns.name
    21
    22 -def from_text(textring):
    23      """Convert a dictionary containing (textual DNS name, base64 secret) pairs
    24      into a binary keyring which has (dns.name.Name, binary secret) pairs.
    25      @rtype: dict"""
    26
    27      keyring = {}
    28      for keytext in textring:
    29          keyname = dns.name.from_text(keytext)
    30          secret = base64.decodestring(textring[keytext])
    31          keyring[keyname] = secret
    32      return keyring
    33
    34 -def to_text(keyring):
    35      """Convert a dictionary containing (dns.name.Name, binary secret) pairs
    36      into a text keyring which has (textual DNS name, base64 secret) pairs.
    37      @rtype: dict"""
    38
    39      textring = {}
    40      for keyname in keyring:
    41          keytext = dns.name.to_text(keyname)
    42          secret = base64.encodestring(keyring[keyname])
    43          textring[keytext] = secret
    44      return textring
    45