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Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
rdtypes	[ DIR ]	drwxr-xr-x
__init__.py	1.3 KB	-rw-r--r--
_compat.py	1.28 KB	-rw-r--r--
dnssec.py	14.44 KB	-rw-r--r--
e164.py	3.07 KB	-rw-r--r--
edns.py	4.28 KB	-rw-r--r--
entropy.py	4.36 KB	-rw-r--r--
exception.py	4.52 KB	-rw-r--r--
flags.py	2.6 KB	-rw-r--r--
grange.py	1.93 KB	-rw-r--r--
hash.py	1.07 KB	-rw-r--r--
inet.py	3.17 KB	-rw-r--r--
ipv4.py	1.98 KB	-rw-r--r--
ipv6.py	5.17 KB	-rw-r--r--
message.py	42.12 KB	-rw-r--r--
name.py	28.74 KB	-rw-r--r--
namedict.py	3.59 KB	-rw-r--r--
node.py	5.91 KB	-rw-r--r--
opcode.py	2.48 KB	-rw-r--r--
query.py	19.18 KB	-rw-r--r--
rcode.py	3.03 KB	-rw-r--r--
rdata.py	14.65 KB	-rw-r--r--
rdataclass.py	3.18 KB	-rw-r--r--
rdataset.py	11.29 KB	-rw-r--r--
rdatatype.py	5.21 KB	-rw-r--r--
renderer.py	11.64 KB	-rw-r--r--
resolver.py	50.88 KB	-rw-r--r--
reversename.py	3.23 KB	-rw-r--r--
rrset.py	5.85 KB	-rw-r--r--
set.py	7.53 KB	-rw-r--r--
tokenizer.py	17.88 KB	-rw-r--r--
tsig.py	7.54 KB	-rw-r--r--
tsigkeyring.py	1.7 KB	-rw-r--r--
ttl.py	2.23 KB	-rw-r--r--
update.py	9.78 KB	-rw-r--r--
version.py	1.23 KB	-rw-r--r--
wiredata.py	3.64 KB	-rw-r--r--
zone.py	39.09 KB	-rw-r--r--

Code Editor : e164.py

# Copyright (C) 2006, 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.

"""DNS E.164 helpers

@var public_enum_domain: The DNS public ENUM domain, e164.arpa.
@type public_enum_domain: dns.name.Name object
"""

import dns.exception
import dns.name
import dns.resolver
from ._compat import string_types

public_enum_domain = dns.name.from_text('e164.arpa.')

def from_e164(text, origin=public_enum_domain):
    """Convert an E.164 number in textual form into a Name object whose
    value is the ENUM domain name for that number.
    @param text: an E.164 number in textual form.
    @type text: str
    @param origin: The domain in which the number should be constructed.
    The default is e164.arpa.
    @type origin: dns.name.Name object or None
    @rtype: dns.name.Name object
    """
    parts = [d for d in text if d.isdigit()]
    parts.reverse()
    return dns.name.from_text('.'.join(parts), origin=origin)

def to_e164(name, origin=public_enum_domain, want_plus_prefix=True):
    """Convert an ENUM domain name into an E.164 number.
    @param name: the ENUM domain name.
    @type name: dns.name.Name object.
    @param origin: A domain containing the ENUM domain name.  The
    name is relativized to this domain before being converted to text.
    @type origin: dns.name.Name object or None
    @param want_plus_prefix: if True, add a '+' to the beginning of the
    returned number.
    @rtype: str
    """
    if origin is not None:
        name = name.relativize(origin)
    dlabels = [d for d in name.labels if d.isdigit() and len(d) == 1]
    if len(dlabels) != len(name.labels):
        raise dns.exception.SyntaxError('non-digit labels in ENUM domain name')
    dlabels.reverse()
    text = b''.join(dlabels)
    if want_plus_prefix:
        text = b'+' + text
    return text

def query(number, domains, resolver=None):
    """Look for NAPTR RRs for the specified number in the specified domains.

e.g. lookup('16505551212', ['e164.dnspython.org.', 'e164.arpa.'])
    """
    if resolver is None:
        resolver = dns.resolver.get_default_resolver()
    e_nx = dns.resolver.NXDOMAIN()
    for domain in domains:
        if isinstance(domain, string_types):
            domain = dns.name.from_text(domain)
        qname = dns.e164.from_e164(number, domain)
        try:
            return resolver.query(qname, 'NAPTR')
        except dns.resolver.NXDOMAIN as e:
            e_nx += e
    raise e_nx

${this.title}

Code Editor : e164.py