117 行
3.7 KiB
Python
117 行
3.7 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 asyncio
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import json
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from quart import current_app, websocket
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from anonstream.stream import get_stream_title, get_stream_uptime_and_viewership
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from anonstream.captcha import get_random_captcha_digest_for
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from anonstream.chat import get_all_messages_for_websocket, add_chat_message, Rejected
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from anonstream.user import get_all_users_for_websocket, see, verify, deverify, BadCaptcha, try_change_appearance
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from anonstream.utils.chat import generate_nonce
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from anonstream.utils.websocket import parse_websocket_data, Malformed, WS
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CONFIG = current_app.config
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async def websocket_outbound(queue, user):
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payload = {
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'type': 'init',
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'nonce': generate_nonce(),
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'title': await get_stream_title(),
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'stats': get_stream_uptime_and_viewership(for_websocket=True),
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'messages': get_all_messages_for_websocket(),
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'users': get_all_users_for_websocket(),
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'default': {
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True: CONFIG['DEFAULT_HOST_NAME'],
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False: CONFIG['DEFAULT_ANON_NAME'],
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},
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'scrollback': CONFIG['MAX_CHAT_SCROLLBACK'],
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'digest': get_random_captcha_digest_for(user),
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}
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await websocket.send_json(payload)
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while True:
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payload = await queue.get()
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await websocket.send_json(payload)
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async def websocket_inbound(queue, user):
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while True:
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try:
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receipt = await websocket.receive_json()
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except json.JSONDecodeError:
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receipt = None
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finally:
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see(user)
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try:
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receipt_type, parsed = parse_websocket_data(receipt)
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except Malformed as e:
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error , *_ = e.args
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payload = {
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'type': 'error',
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'because': error,
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}
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else:
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match receipt_type:
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case WS.MESSAGE:
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handle = handle_inbound_message
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case WS.APPEARANCE:
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handle = handle_inbound_appearance
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case WS.CAPTCHA:
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handle = handle_inbound_captcha
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payload = handle(user, *parsed)
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queue.put_nowait(payload)
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def handle_inbound_captcha(user):
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return {
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'type': 'captcha',
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'digest': get_random_captcha_digest_for(user),
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}
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def handle_inbound_appearance(user, name, color, password, want_tripcode):
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errors = try_change_appearance(user, name, color, password, want_tripcode)
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if errors:
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return {
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'type': 'appearance',
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'errors': [error.args for error in errors],
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}
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else:
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return {
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'type': 'appearance',
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'result': 'Changed appearance',
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'name': user['name'],
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'color': user['color'],
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#'tripcode': user['tripcode'],
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}
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def handle_inbound_message(user, nonce, comment, digest, answer):
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try:
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verification_happened = verify(user, digest, answer)
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except BadCaptcha as e:
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notice, *_ = e.args
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message_was_added = False
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else:
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try:
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message_was_added = add_chat_message(
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user,
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nonce,
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comment,
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ignore_empty=verification_happened,
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)
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except Rejected as e:
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notice, *_ = e.args
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message_was_added = False
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else:
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notice = None
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if message_was_added:
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deverify(user)
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return {
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'type': 'ack',
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'nonce': nonce,
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'next': generate_nonce(),
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'notice': notice,
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'clear': message_was_added,
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'digest': get_random_captcha_digest_for(user),
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}
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