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# coding: utf-8
from __future__ import unicode_literals, division, absolute_import, print_function

import socket
import struct

from ._errors import unwrap
from ._types import byte_cls, bytes_to_list, str_cls, type_name


def inet_ntop(address_family, packed_ip):
    """
    Windows compatibility shim for socket.inet_ntop().

    :param address_family:
        socket.AF_INET for IPv4 or socket.AF_INET6 for IPv6

    :param packed_ip:
        A byte string of the network form of an IP address

    :return:
        A unicode string of the IP address
    """

    if address_family not in set([socket.AF_INET, socket.AF_INET6]):
        raise ValueError(unwrap(
            '''
            address_family must be socket.AF_INET (%s) or socket.AF_INET6 (%s),
            not %s
            ''',
            repr(socket.AF_INET),
            repr(socket.AF_INET6),
            repr(address_family)
        ))

    if not isinstance(packed_ip, byte_cls):
        raise TypeError(unwrap(
            '''
            packed_ip must be a byte string, not %s
            ''',
            type_name(packed_ip)
        ))

    required_len = 4 if address_family == socket.AF_INET else 16
    if len(packed_ip) != required_len:
        raise ValueError(unwrap(
            '''
            packed_ip must be %d bytes long - is %d
            ''',
            required_len,
            len(packed_ip)
        ))

    if address_family == socket.AF_INET:
        return '%d.%d.%d.%d' % tuple(bytes_to_list(packed_ip))

    octets = struct.unpack(b'!HHHHHHHH', packed_ip)

    runs_of_zero = {}
    longest_run = 0
    zero_index = None
    for i, octet in enumerate(octets + (-1,)):
        if octet != 0:
            if zero_index is not None:
                length = i - zero_index
                if length not in runs_of_zero:
                    runs_of_zero[length] = zero_index
                longest_run = max(longest_run, length)
                zero_index = None
        elif zero_index is None:
            zero_index = i

    hexed = [hex(o)[2:] for o in octets]

    if longest_run < 2:
        return ':'.join(hexed)

    zero_start = runs_of_zero[longest_run]
    zero_end = zero_start + longest_run

    return ':'.join(hexed[:zero_start]) + '::' + ':'.join(hexed[zero_end:])


def inet_pton(address_family, ip_string):
    """
    Windows compatibility shim for socket.inet_ntop().

    :param address_family:
        socket.AF_INET for IPv4 or socket.AF_INET6 for IPv6

    :param ip_string:
        A unicode string of an IP address

    :return:
        A byte string of the network form of the IP address
    """

    if address_family not in set([socket.AF_INET, socket.AF_INET6]):
        raise ValueError(unwrap(
            '''
            address_family must be socket.AF_INET (%s) or socket.AF_INET6 (%s),
            not %s
            ''',
            repr(socket.AF_INET),
            repr(socket.AF_INET6),
            repr(address_family)
        ))

    if not isinstance(ip_string, str_cls):
        raise TypeError(unwrap(
            '''
            ip_string must be a unicode string, not %s
            ''',
            type_name(ip_string)
        ))

    if address_family == socket.AF_INET:
        octets = ip_string.split('.')
        error = len(octets) != 4
        if not error:
            ints = []
            for o in octets:
                o = int(o)
                if o > 255 or o < 0:
                    error = True
                    break
                ints.append(o)

        if error:
            raise ValueError(unwrap(
                '''
                ip_string must be a dotted string with four integers in the
                range of 0 to 255, got %s
                ''',
                repr(ip_string)
            ))

        return struct.pack(b'!BBBB', *ints)

    error = False
    omitted = ip_string.count('::')
    if omitted > 1:
        error = True
    elif omitted == 0:
        octets = ip_string.split(':')
        error = len(octets) != 8
    else:
        begin, end = ip_string.split('::')
        begin_octets = begin.split(':')
        end_octets = end.split(':')
        missing = 8 - len(begin_octets) - len(end_octets)
        octets = begin_octets + (['0'] * missing) + end_octets

    if not error:
        ints = []
        for o in octets:
            o = int(o, 16)
            if o > 65535 or o < 0:
                error = True
                break
            ints.append(o)

        return struct.pack(b'!HHHHHHHH', *ints)

    raise ValueError(unwrap(
        '''
        ip_string must be a valid ipv6 string, got %s
        ''',
        repr(ip_string)
    ))

Filemanager

Name Type Size Permission Actions
__pycache__ Folder 0755
_perf Folder 0755
__init__.py File 209 B 0644
_elliptic_curve.py File 9.2 KB 0644
_errors.py File 967 B 0644
_ffi.py File 738 B 0644
_inet.py File 4.55 KB 0644
_int.py File 4.51 KB 0644
_iri.py File 8.43 KB 0644
_ordereddict.py File 4.43 KB 0644
_teletex_codec.py File 4.93 KB 0644
_types.py File 939 B 0644
algos.py File 33.3 KB 0644
cms.py File 24.53 KB 0644
core.py File 153.57 KB 0644
crl.py File 15.73 KB 0644
csr.py File 2.09 KB 0644
keys.py File 34.36 KB 0644
ocsp.py File 17.38 KB 0644
parser.py File 8.93 KB 0644
pdf.py File 2.2 KB 0644
pem.py File 6 KB 0644
pkcs12.py File 4.46 KB 0644
tsp.py File 7.64 KB 0644
util.py File 17.62 KB 0644
version.py File 154 B 0644
x509.py File 90.14 KB 0644