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46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
import mf2py # type: ignore
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from app import activitypub as ap
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from app import webfinger
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from app.actor import Actor
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from app.actor import RemoteActor
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from app.ap_object import RemoteObject
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from app.database import AsyncSession
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from app.source import _MENTION_REGEX
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async def lookup(db_session: AsyncSession, query: str) -> Actor | RemoteObject:
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query = query.strip()
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if query.startswith("@") or _MENTION_REGEX.match("@" + query):
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query = await webfinger.get_actor_url(query) # type: ignore # None check below
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if not query:
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raise ap.NotAnObjectError(query)
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try:
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ap_obj = await ap.fetch(query)
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except ap.NotAnObjectError as not_an_object_error:
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resp = not_an_object_error.resp
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if not resp:
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raise ap.NotAnObjectError(query)
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alternate_obj = None
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if resp.headers.get("content-type", "").startswith("text/html"):
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for alternate in mf2py.parse(doc=resp.text).get("alternates", []):
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if alternate.get("type") == "application/activity+json":
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alternate_obj = await ap.fetch(alternate["url"])
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if alternate_obj:
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ap_obj = alternate_obj
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else:
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raise
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if ap.as_list(ap_obj["type"])[0] in ap.ACTOR_TYPES:
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return RemoteActor(ap_obj)
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else:
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# Some software return objects wrapped in a Create activity (like
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# python-federation)
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if ap.as_list(ap_obj["type"])[0] == "Create":
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ap_obj = await ap.get_object(ap_obj)
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return await RemoteObject.from_raw_object(ap_obj)
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