Package dns :: Package rdtypes :: Package ANY :: Module X25 |
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# Source Code for Module dns.rdtypes.ANY.X25

     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
     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
    12  # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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    14  # OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
    15
    16  import struct
    17
    18  import dns.exception
    19  import dns.rdata
    20  import dns.tokenizer
    21  from dns._compat import text_type
    22
    23
    24 -class X25(dns.rdata.Rdata):
    25
    26      """X25 record
    27
    28      @ivar address: the PSDN address
    29      @type address: string
    30      @see: RFC 1183"""
    31
    32      __slots__ = ['address']
    33
    34 -    def __init__(self, rdclass, rdtype, address):
    35          super(X25, self).__init__(rdclass, rdtype)
    36          if isinstance(address, text_type):
    37              self.address = address.encode()
    38          else:
    39              self.address = address
    40
    41 -    def to_text(self, origin=None, relativize=True, **kw):
    42          return '"%s"' % dns.rdata._escapify(self.address)
    43
    44      @classmethod
    45 -    def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
    46          address = tok.get_string()
    47          tok.get_eol()
    48          return cls(rdclass, rdtype, address)
    49
    50 -    def to_wire(self, file, compress=None, origin=None):
    51          l = len(self.address)
    52          assert l < 256
    53          file.write(struct.pack('!B', l))
    54          file.write(self.address)
    55
    56      @classmethod
    57 -    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None):
    58          l = wire[current]
    59          current += 1
    60          rdlen -= 1
    61          if l != rdlen:
    62              raise dns.exception.FormError
    63          address = wire[current: current + l].unwrap()
    64          return cls(rdclass, rdtype, address)
    65