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60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
import ipaddress
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from operator import attrgetter
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import dns.name
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class FilterModule:
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def filters(self):
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return {
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"add_origin": add_origin,
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"add_origin_keys": add_origin_keys,
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"ip_filter": ip_filter,
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"remove_domain_suffix": remove_domain_suffix,
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"ipaddr_sort": ipaddr_sort,
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}
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def ip_filter(addresses, networks):
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if isinstance(addresses, dict):
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return {k: ip_filter(v, networks) for k, v in addresses.items()}
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ip_networks = [ipaddress.ip_network(n) for n in networks]
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ip_addresses = [ipaddress.ip_address(a) for a in addresses]
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return [str(a) for a in ip_addresses if any(a in n for n in ip_networks)]
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def add_origin(name, origin="."):
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return dns.name.from_text(name, dns.name.from_text(origin)).to_text()
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def add_origin_keys(dct, origin="."):
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return {add_origin(k, origin): v for k, v in dct.items()}
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def remove_domain_suffix(name):
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parent = dns.name.from_text(name).parent()
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return parent.to_text()
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def ipaddr_sort(addrs, types, unknown_after=True):
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check_types = {
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"global": attrgetter("is_global"),
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"link-local": attrgetter("is_link_local"),
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"loopback": attrgetter("is_loopback"),
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"multicast": attrgetter("is_multicast"),
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"private": attrgetter("is_private"),
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"reserved": attrgetter("is_reserved"),
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"site_local": attrgetter("is_site_local"),
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"unspecified": attrgetter("is_unspecified"),
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}
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def addr_weight(addr):
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if isinstance(addr, str):
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addr = ipaddress.ip_address(addr.split("/")[0])
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for index, ty in enumerate(types):
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if check_types[ty](ipaddress.ip_address(addr)):
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return index
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return len(types) if unknown_after else -1
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return sorted(addrs, key=addr_weight)
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