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30 lines
817 B
Python
30 lines
817 B
Python
from django import forms
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from django.core.exceptions import ValidationError
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from netaddr import IPNetwork, AddrFormatError
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#
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# Form fields
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#
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class IPFormField(forms.Field):
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default_error_messages = {
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'invalid': "Enter a valid IPv4 or IPv6 address (with CIDR mask).",
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}
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def to_python(self, value):
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if not value:
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return None
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if isinstance(value, IPNetwork):
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return value
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# Ensure that a subnet mask has been specified. This prevents IPs from defaulting to a /32 or /128.
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if len(value.split('/')) != 2:
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raise ValidationError('CIDR mask (e.g. /24) is required.')
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try:
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return IPNetwork(value)
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except AddrFormatError:
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raise ValidationError("Please specify a valid IPv4 or IPv6 address.")
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