72 行
2.0 KiB
Python
72 行
2.0 KiB
Python
# SPDX-FileCopyrightText: 2022 n9k [https://git.076.ne.jp/ninya9k]
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# SPDX-License-Identifier: AGPL-3.0-or-later
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import hashlib
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import base64
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from collections import OrderedDict
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from math import inf
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from quart import current_app
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from anonstream.utils.colour import generate_colour, colour_to_color
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from anonstream.utils.user import Presence
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CONFIG = current_app.config
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def generate_token_hash_and_tag(token):
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parts = CONFIG['SECRET_KEY'] + b'token-hash\0' + token.encode()
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digest = hashlib.sha256(parts).digest()
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token_hash = base64.b32encode(digest)[:26].lower().decode()
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tag = f'#{digest.hex()[:3]}'
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return token_hash, tag
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def generate_user(timestamp, token, broadcaster, presence):
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colour = generate_colour(
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seed='name\0' + token,
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bg=CONFIG['CHAT_BACKGROUND_COLOUR'],
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contrast=4.53,
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)
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token_hash, tag = generate_token_hash_and_tag(token)
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return {
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'token': token,
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'token_hash': token_hash,
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'tag': tag,
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'broadcaster': broadcaster,
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'verified': broadcaster,
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'websockets': set(),
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'name': None,
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'color': colour_to_color(colour),
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'tripcode': None,
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'state': OrderedDict(),
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'last': {
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'seen': timestamp,
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'watching': -inf,
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},
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'presence': presence,
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}
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def get_default_name(user):
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return (
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CONFIG['DEFAULT_HOST_NAME']
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if user['broadcaster'] else
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CONFIG['DEFAULT_ANON_NAME']
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)
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def get_presence(timestamp, user):
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last_watching_ago = timestamp - user['last']['watching']
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if last_watching_ago < CONFIG['THRESHOLD_USER_NOTWATCHING']:
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return Presence.WATCHING
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last_seen_ago = timestamp - user['last']['seen']
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if last_seen_ago < CONFIG['THRESHOLD_USER_TENTATIVE']:
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return Presence.NOTWATCHING
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if user['websockets']:
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return Presence.NOTWATCHING
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if last_seen_ago < CONFIG['THRESHOLD_USER_ABSENT']:
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return Presence.TENTATIVE
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return Presence.ABSENT
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