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from ipaddress import ip_address, ip_interface, ip_network, _IPAddressBase, _BaseNetwork
from netaddr import EUI, AddrFormatError
from django import forms
from django.core.exceptions import ValidationError
from netfields.mac import mac_unix_common, mac_eui64
class InetAddressFormField(forms.Field):
widget = forms.TextInput
default_error_messages = {
'invalid': u'Enter a valid IP address.',
}
def __init__(self, *args, **kwargs):
super(InetAddressFormField, self).__init__(*args, **kwargs)
def to_python(self, value):
if not value:
return None
if isinstance(value, _IPAddressBase):
return value
if isinstance(value, str):
value = value.strip()
try:
return ip_interface(value)
except ValueError:
raise ValidationError(self.error_messages['invalid'])
class NoPrefixInetAddressFormField(forms.Field):
widget = forms.TextInput
default_error_messages = {
'invalid': u'Enter a valid IP address.',
}
def __init__(self, *args, **kwargs):
super(NoPrefixInetAddressFormField, self).__init__(*args, **kwargs)
def to_python(self, value):
if not value:
return None
if isinstance(value, _IPAddressBase):
return value
if isinstance(value, str):
value = value.strip()
try:
return ip_address(value)
except ValueError:
raise ValidationError(self.error_messages['invalid'])
class CidrAddressFormField(forms.Field):
widget = forms.TextInput
default_error_messages = {
'invalid': u'Enter a valid CIDR address.',
'network': u'Must be a network address.',
}
def __init__(self, *args, **kwargs):
super(CidrAddressFormField, self).__init__(*args, **kwargs)
def to_python(self, value):
if not value:
return None
if isinstance(value, _BaseNetwork):
network = value
if isinstance(value, str):
value = value.strip()
try:
network = ip_network(value)
except ValueError as e:
if 'has host bits' in e.args[0]:
raise ValidationError(self.error_messages['network'])
raise ValidationError(self.error_messages['invalid'])
return network
class MACAddressFormField(forms.Field):
default_error_messages = {
'invalid': u'Enter a valid MAC address.',
}
def __init__(self, *args, **kwargs):
super(MACAddressFormField, self).__init__(*args, **kwargs)
def to_python(self, value):
if not value:
return None
if isinstance(value, EUI):
return value
if isinstance(value, str):
value = value.strip()
try:
return EUI(value, version=48, dialect=mac_unix_common)
except (AddrFormatError, IndexError, TypeError):
raise ValidationError(self.error_messages['invalid'])
def widget_attrs(self, widget):
attrs = super(MACAddressFormField, self).widget_attrs(widget)
attrs.update({'maxlength': '17'})
return attrs
class MACAddress8FormField(forms.Field):
default_error_messages = {
'invalid': u'Enter a valid MAC address 8.',
}
def __init__(self, *args, **kwargs):
super(MACAddress8FormField, self).__init__(*args, **kwargs)
def to_python(self, value):
if not value:
return None
if isinstance(value, EUI):
return value
if isinstance(value, str):
value = value.strip()
try:
mac = EUI(value, dialect=mac_eui64)
if mac.version == 64:
return mac
mac = mac.eui64()
mac.dialect = mac_eui64
return mac
except (AddrFormatError, IndexError, TypeError):
raise ValidationError(self.error_messages['invalid'])
def widget_attrs(self, widget):
attrs = super(MACAddress8FormField, self).widget_attrs(widget)
attrs.update({'maxlength': '23'})
return attrs
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