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96 lines
3.1 KiB
Python
96 lines
3.1 KiB
Python
from django.core.exceptions import ValidationError
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from django.db import models
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from netaddr import AddrFormatError, IPNetwork
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from . import lookups, validators
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from .formfields import IPNetworkFormField
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class BaseIPField(models.Field):
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def python_type(self):
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return IPNetwork
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def from_db_value(self, value, expression, connection):
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return self.to_python(value)
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def to_python(self, value):
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if not value:
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return value
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try:
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# Always return a netaddr.IPNetwork object. (netaddr.IPAddress does not provide a mask.)
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return IPNetwork(value)
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except AddrFormatError:
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raise ValidationError("Invalid IP address format: {}".format(value))
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except (TypeError, ValueError) as e:
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raise ValidationError(e)
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def get_prep_value(self, value):
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if not value:
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return None
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if isinstance(value, list):
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return [str(self.to_python(v)) for v in value]
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return str(self.to_python(value))
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def form_class(self):
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return IPNetworkFormField
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def formfield(self, **kwargs):
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defaults = {'form_class': self.form_class()}
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defaults.update(kwargs)
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return super().formfield(**defaults)
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class IPNetworkField(BaseIPField):
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"""
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IP prefix (network and mask)
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"""
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description = "PostgreSQL CIDR field"
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default_validators = [validators.prefix_validator]
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def db_type(self, connection):
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return 'cidr'
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IPNetworkField.register_lookup(lookups.IExact)
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IPNetworkField.register_lookup(lookups.EndsWith)
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IPNetworkField.register_lookup(lookups.IEndsWith)
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IPNetworkField.register_lookup(lookups.StartsWith)
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IPNetworkField.register_lookup(lookups.IStartsWith)
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IPNetworkField.register_lookup(lookups.Regex)
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IPNetworkField.register_lookup(lookups.IRegex)
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IPNetworkField.register_lookup(lookups.NetContained)
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IPNetworkField.register_lookup(lookups.NetContainedOrEqual)
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IPNetworkField.register_lookup(lookups.NetContains)
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IPNetworkField.register_lookup(lookups.NetContainsOrEquals)
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IPNetworkField.register_lookup(lookups.NetFamily)
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IPNetworkField.register_lookup(lookups.NetMaskLength)
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class IPAddressField(BaseIPField):
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"""
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IP address (host address and mask)
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"""
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description = "PostgreSQL INET field"
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def db_type(self, connection):
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return 'inet'
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IPAddressField.register_lookup(lookups.IExact)
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IPAddressField.register_lookup(lookups.EndsWith)
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IPAddressField.register_lookup(lookups.IEndsWith)
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IPAddressField.register_lookup(lookups.StartsWith)
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IPAddressField.register_lookup(lookups.IStartsWith)
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IPAddressField.register_lookup(lookups.Regex)
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IPAddressField.register_lookup(lookups.IRegex)
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IPAddressField.register_lookup(lookups.NetContained)
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IPAddressField.register_lookup(lookups.NetContainedOrEqual)
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IPAddressField.register_lookup(lookups.NetContains)
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IPAddressField.register_lookup(lookups.NetContainsOrEquals)
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IPAddressField.register_lookup(lookups.NetHost)
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IPAddressField.register_lookup(lookups.NetIn)
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IPAddressField.register_lookup(lookups.NetHostContained)
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IPAddressField.register_lookup(lookups.NetFamily)
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IPAddressField.register_lookup(lookups.NetMaskLength)
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