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96 lines
2.1 KiB
Python
96 lines
2.1 KiB
Python
import ipaddress
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import re
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import rdap
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from rdap import RdapAsn
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from rdap.exceptions import RdapException, RdapHTTPError, RdapNotFoundError
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import requests
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from peeringdb_server import settings
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class RdapLookup(rdap.RdapClient):
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"""
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Does RDAP lookups against defined URL.
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"""
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def __init__(self):
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# create rdap config
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config = dict(
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bootstrap_url=settings.RDAP_URL.rstrip('/'),
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lacnic_apikey=settings.RDAP_LACNIC_APIKEY,
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)
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super(RdapLookup, self).__init__(config)
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def network_is_bogon(network):
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"""
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Returns if the passed ipaddress network is a bogon
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Arguments:
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- network <ipaddress.IPv4Network|ipaddress.IPv6Network>
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Return:
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- bool
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"""
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return not network.is_global or network.is_reserved
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def network_is_pdb_valid(network):
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"""
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Return if the passed ipaddress network is in pdb valid
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address space
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Arguments:
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- network <ipaddress.IPv4Network|ipaddress.IPv6Network>
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Return:
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- bool
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"""
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if network.is_multicast or network_is_bogon(network):
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return False
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if network.version == 4:
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return True
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# not allowed v6 blocks
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v6_invalid = [
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# 2002::/16 - RFC 3068 - 6to4 prefix
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0x2002,
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# 3ffe::/16 - RFC 5156 - used for the 6bone but was returned
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0x3ffe,
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# fec0::/10 - RFC 4291 - Reserved by IETF
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0xfec0,
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# ff00::/8 - RFC 4291 - Multicast
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0xff00,
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]
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if int(network.network_address) >> 112 in v6_invalid:
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return False
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return True
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def get_prefix_protocol(prefix):
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"""
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Takes a network address space prefix string and returns
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a string describing the protocol
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Will raise a ValueError if it cannot determine protocol
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Returns:
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str: IPv4 or IPv6
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"""
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try:
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ipaddress.IPv4Network(prefix)
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return "IPv4"
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except ipaddress.AddressValueError:
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try:
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ipaddress.IPv6Network(prefix)
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return "IPv6"
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except ipaddress.AddressValueError:
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raise ValueError("Prefix invalid")
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