FM / rdtypes

/usr/lib/python3.6/site-packages/dns/rdtypes/

/usr/lib/python3.6/site-packages/dns/rdtypes

Name	Size	Mode	Actions
ANY/	-	0755	rm
IN/	-	0755	rm
__pycache__/	-	0755	rm
dnskeybase.py	4387	0644	edit dl rm
dsbase.py	3080	0644	edit dl rm
euibase.py	2777	0644	edit dl rm
mxbase.py	3660	0644	edit dl rm
nsbase.py	2851	0644	edit dl rm
txtbase.py	3039	0644	edit dl rm
__init__.py	895	0644	edit dl rm

Edit: /usr/lib/python3.6/site-packages/dns/rdtypes/dsbase.py (3080B)

# Copyright (C) 2010, 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.

import struct
import binascii

import dns.rdata
import dns.rdatatype

class DSBase(dns.rdata.Rdata):

"""Base class for rdata that is like a DS record

@ivar key_tag: the key tag
    @type key_tag: int
    @ivar algorithm: the algorithm
    @type algorithm: int
    @ivar digest_type: the digest type
    @type digest_type: int
    @ivar digest: the digest
    @type digest: int
    @see: draft-ietf-dnsext-delegation-signer-14.txt"""

__slots__ = ['key_tag', 'algorithm', 'digest_type', 'digest']

def __init__(self, rdclass, rdtype, key_tag, algorithm, digest_type,
                 digest):
        super(DSBase, self).__init__(rdclass, rdtype)
        self.key_tag = key_tag
        self.algorithm = algorithm
        self.digest_type = digest_type
        self.digest = digest

def to_text(self, origin=None, relativize=True, **kw):
        return '%d %d %d %s' % (self.key_tag, self.algorithm,
                                self.digest_type,
                                dns.rdata._hexify(self.digest,
                                                  chunksize=128))

@classmethod
    def from_text(cls, rdclass, rdtype, tok, origin=None, relativize=True):
        key_tag = tok.get_uint16()
        algorithm = tok.get_uint8()
        digest_type = tok.get_uint8()
        chunks = []
        while 1:
            t = tok.get().unescape()
            if t.is_eol_or_eof():
                break
            if not t.is_identifier():
                raise dns.exception.SyntaxError
            chunks.append(t.value.encode())
        digest = b''.join(chunks)
        digest = binascii.unhexlify(digest)
        return cls(rdclass, rdtype, key_tag, algorithm, digest_type,
                   digest)

def to_wire(self, file, compress=None, origin=None):
        header = struct.pack("!HBB", self.key_tag, self.algorithm,
                             self.digest_type)
        file.write(header)
        file.write(self.digest)

@classmethod
    def from_wire(cls, rdclass, rdtype, wire, current, rdlen, origin=None):
        header = struct.unpack("!HBB", wire[current: current + 4])
        current += 4
        rdlen -= 4
        digest = wire[current: current + rdlen].unwrap()
        return cls(rdclass, rdtype, header[0], header[1], header[2], digest)

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