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from ipaddress import ip_address, ip_interface, ip_network
from netaddr import EUI
from netaddr.core import AddrFormatError
from rest_framework import serializers
from netfields.mac import mac_unix_common, mac_eui64
from netfields import fields
class InetAddressField(serializers.Field):
default_error_messages = {
'invalid': 'Invalid IP address.'
}
def __init__(self, store_prefix=True, *args, **kwargs):
self.store_prefix = store_prefix
super(InetAddressField, self).__init__(*args, **kwargs)
def to_representation(self, value):
if value is None:
return value
return str(value)
def to_internal_value(self, data):
if data is None:
return data
try:
if self.store_prefix:
return ip_interface(data)
else:
return ip_address(data)
except ValueError:
self.fail('invalid')
class CidrAddressField(serializers.Field):
default_error_messages = {
'invalid': 'Invalid CIDR address.',
'network': 'Must be a network address.',
}
def to_representation(self, value):
if value is None:
return value
return str(value)
def to_internal_value(self, data):
if data is None:
return data
try:
return ip_network(data)
except ValueError as e:
if 'has host bits' in e.args[0]:
self.fail('network')
self.fail('invalid')
class MACAddressField(serializers.Field):
default_error_messages = {
'invalid': 'Invalid MAC address.'
}
def to_representation(self, value):
if value is None:
return value
return str(value)
def to_internal_value(self, data):
if data is None:
return data
try:
return EUI(data, version=48, dialect=mac_unix_common)
except (AddrFormatError, IndexError, TypeError):
self.fail('invalid')
class MACAddress8Field(serializers.Field):
default_error_messages = {
'invalid': 'Invalid MAC address 8.'
}
def to_representation(self, value):
if value is None:
return value
return str(value)
def to_internal_value(self, data):
if data is None:
return data
try:
mac = EUI(data, dialect=mac_eui64)
if mac.version == 64:
return mac
mac = mac.eui64()
mac.dialect = mac_eui64
return mac
except (AddrFormatError, IndexError, TypeError):
self.fail('invalid')
class NetModelSerializer(serializers.ModelSerializer):
pass
NetModelSerializer.serializer_field_mapping[fields.InetAddressField] = InetAddressField
NetModelSerializer.serializer_field_mapping[fields.CidrAddressField] = CidrAddressField
NetModelSerializer.serializer_field_mapping[fields.MACAddressField] = MACAddressField
NetModelSerializer.serializer_field_mapping[fields.MACAddress8Field] = MACAddress8Field
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