131 行
5.1 KiB
Python
131 行
5.1 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 math
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from quart import current_app, request, render_template, abort, make_response, redirect, url_for, send_from_directory
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from werkzeug.exceptions import NotFound, TooManyRequests
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from anonstream.access import add_failure, pop_failure
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from anonstream.captcha import get_captcha_image, get_random_captcha_digest
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from anonstream.segments import segments, StopSendingSegments
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from anonstream.stream import is_online, get_stream_uptime
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from anonstream.user import watching, create_eyes, renew_eyes, EyesException, RatelimitedEyes, TooManyEyes
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from anonstream.routes.wrappers import with_user_from, auth_required, clean_cache_headers, generate_and_add_user
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from anonstream.helpers.captcha import check_captcha_digest, Answer
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from anonstream.utils.security import generate_csp
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from anonstream.utils.user import identifying_string
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CAPTCHA_SIGNER = current_app.captcha_signer
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STATIC_DIRECTORY = current_app.root_path / 'static'
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@current_app.route('/')
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@with_user_from(request, fallback_to_token=True)
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async def home(timestamp, user_or_token):
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match user_or_token:
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case str() | None:
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failure_id = request.args.get('failure', type=int)
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response = await render_template(
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'captcha.html',
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csp=generate_csp(),
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token=user_or_token,
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digest=get_random_captcha_digest(),
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failure=pop_failure(failure_id),
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)
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case dict():
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response = await render_template(
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'home.html',
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csp=generate_csp(),
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user=user_or_token,
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version=current_app.version,
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)
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return response
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@current_app.route('/stream.mp4')
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@with_user_from(request)
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async def stream(timestamp, user):
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if not is_online():
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raise NotFound('The stream is offline.')
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else:
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try:
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eyes_id = create_eyes(user, tuple(request.headers))
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except RatelimitedEyes as e:
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retry_after, *_ = e.args
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error = TooManyRequests(
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f'You have requested the stream recently. '
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f'Try again in {retry_after:.1f} seconds.'
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)
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response = await current_app.handle_http_exception(error)
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response = await make_response(response)
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response.headers['Retry-After'] = math.ceil(retry_after)
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raise abort(response)
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except TooManyEyes as e:
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n_eyes, *_ = e.args
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raise TooManyRequests(
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f'You have made {n_eyes} concurrent requests for the stream. '
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f'End one of those before making a new request.'
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)
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else:
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def segment_read_hook(uri):
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try:
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renew_eyes(user, eyes_id, just_read_new_segment=True)
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except EyesException as e:
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raise StopSendingSegments(
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f'eyes {eyes_id} not allowed: {e!r}'
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) from e
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print(f'{uri}: \033[37m{eyes_id}\033[0m~{identifying_string(user)}')
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watching(user)
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generator = segments(segment_read_hook, token=f'\033[35m{user["token"]}\033[0m')
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response = await make_response(generator)
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response.headers['Content-Type'] = 'video/mp4'
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response.timeout = None
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return response
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@current_app.route('/login')
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@auth_required
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async def login():
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return redirect(url_for('home'), 303)
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@current_app.route('/captcha.jpg')
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@with_user_from(request, fallback_to_token=True)
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async def captcha(timestamp, user_or_token):
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digest = request.args.get('digest', '')
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image = get_captcha_image(digest)
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if image is None:
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return abort(410)
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else:
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return image, {'Content-Type': 'image/jpeg'}
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@current_app.post('/access')
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@with_user_from(request, fallback_to_token=True)
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async def access(timestamp, user_or_token):
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match user_or_token:
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case str() | None:
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token = user_or_token
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form = await request.form
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digest = form.get('digest', '')
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answer = form.get('answer', '')
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match check_captcha_digest(CAPTCHA_SIGNER, digest, answer):
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case Answer.MISSING:
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failure_id = add_failure('Captcha is required')
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case Answer.BAD:
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failure_id = add_failure('Captcha was incorrect')
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case Answer.EXPIRED:
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failure_id = add_failure('Captcha has expired')
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case Answer.OK:
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failure_id = None
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user = generate_and_add_user(timestamp, token, verified=True)
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if failure_id is not None:
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url = url_for('home', token=token, failure=failure_id)
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raise abort(redirect(url, 303))
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case dict():
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user = user_or_token
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url = url_for('home', token=user['token'])
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return redirect(url, 303)
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@current_app.route('/static/<filename>')
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@with_user_from(request)
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@clean_cache_headers
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async def static(timestamp, user, filename):
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return await send_from_directory(STATIC_DIRECTORY, filename)
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