anti
010568e558
Mirrors decnet/geoip/ end-to-end: paths/base/factory/lookup at the package level, iptoasn/ subpackage holds the data-source-specific fetch+parse+provider. AsnLookup is bisect-indexed over (start, end, AsnInfo) ranges with a pickled cache invalidated on raw-file mtime bump. Why iptoasn (and not bgp.tools / Team Cymru): public-domain dump, zero attribution, no UA mandate, daily refresh — keeps DECNET stealth intact (the geoip/rir module's "never identify as DECNET" comment applies the same way here). bgp.tools' ToS would have required an identifying UA, conflicting with feedback_stealth. Public surface: decnet.asn.enrich_ip(ip) -> (asn, name, source) or all-None on miss/disabled. Same shape as decnet.geoip.enrich_ip so the profiler can compose them in one call site.
34 lines
1.0 KiB
Python
34 lines
1.0 KiB
Python
"""ASN provider protocol — mirror of :mod:`decnet.geoip.base`.
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Concrete providers (e.g. :mod:`decnet.asn.iptoasn`) implement this.
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Callers must go through :func:`decnet.asn.factory.get_provider`; never
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import a concrete provider class directly.
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"""
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from __future__ import annotations
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from abc import ABC, abstractmethod
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from pathlib import Path
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from typing import Sequence
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from decnet.asn.lookup import AsnLookup
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class Provider(ABC):
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"""Abstract IP→ASN data provider."""
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#: Short tag written to ``Attacker.asn_source`` (e.g. ``'iptoasn'``).
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name: str
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@abstractmethod
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def refresh(self) -> None:
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"""Download / regenerate the provider's raw data files."""
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@abstractmethod
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def build_lookup(self) -> AsnLookup:
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"""Parse the on-disk data files and return a ready-to-query lookup."""
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@abstractmethod
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def data_paths(self) -> Sequence[Path]:
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"""Return the list of files this provider manages — used for staleness
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detection. Order is not significant."""
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