Files
snikket-web-portal/snikket_web/main.py

150 lines
3.8 KiB
Python

import base64
import binascii
import typing
from datetime import datetime, timedelta
import aiohttp
import quart
import quart.flask_patch
from quart import (
current_app,
redirect,
url_for,
render_template,
request,
Response,
)
import babel
import wtforms
import flask_wtf
from flask_babel import lazy_gettext as _l, _
from . import xmpputil, _version
from .infra import client
bp = quart.Blueprint("main", __name__)
class LoginForm(flask_wtf.FlaskForm): # type:ignore
address = wtforms.TextField(
_l("Address"),
validators=[wtforms.validators.InputRequired()],
)
password = wtforms.PasswordField(
_l("Password"),
validators=[wtforms.validators.InputRequired()],
)
action_signin = wtforms.SubmitField(
_l("Sign in"),
)
@bp.route("/-")
async def index() -> quart.Response:
return redirect(url_for("index"))
@bp.route("/login", methods=["GET", "POST"])
async def login() -> typing.Union[str, quart.Response]:
if client.has_session and (await client.test_session()):
return redirect(url_for('user.index'))
form = LoginForm()
if form.validate_on_submit():
jid = form.address.data
localpart, domain, resource = xmpputil.split_jid(jid)
if not localpart:
localpart, domain = domain, current_app.config["SNIKKET_DOMAIN"]
jid = "{}@{}".format(localpart, domain)
password = form.password.data
try:
await client.login(jid, password)
except quart.exceptions.Unauthorized:
form.password.errors.append(
_("Invalid username or password.")
)
else:
return redirect(url_for('user.index'))
return await render_template("login.html", form=form)
@bp.route("/meta/about.html")
async def about() -> str:
version = None
extra_versions = {}
if current_app.debug or client.is_admin_session:
version = _version.version
extra_versions["Quart"] = quart.__version__
extra_versions["aiohttp"] = aiohttp.__version__
extra_versions["babel"] = babel.__version__
extra_versions["wtforms"] = wtforms.__version__
extra_versions["flask-wtf"] = flask_wtf.__version__
return await render_template(
"about.html",
version=version,
extra_versions=extra_versions,
)
@bp.route("/meta/demo.html")
async def demo() -> str:
return await render_template("demo.html")
def repad(s: str) -> str:
return s + "=" * (4 - len(s) % 4)
@bp.route("/avatar/<from_>/<code>")
async def avatar(from_: str, code: str) -> quart.Response:
try:
etag = request.headers["if-none-match"]
except KeyError:
etag = None
address = base64.urlsafe_b64decode(repad(from_)).decode("utf-8")
info = await client.get_avatar(address, metadata_only=True)
bin_hash = binascii.a2b_hex(info["sha1"])
new_etag = base64.urlsafe_b64encode(bin_hash).decode("ascii").rstrip("=")
cache_ttl = timedelta(seconds=current_app.config.get(
"AVATAR_CACHE_TTL",
300,
))
response = Response("", mimetype=info["type"])
response.headers["etag"] = new_etag
# XXX: It seems to me that quart expects localtime(?!) in this field...
response.expires = datetime.now() + cache_ttl
response.headers["Content-Security-Policy"] = \
"frame-ancestors 'none'; default-src 'none'; style-src 'unsafe-inline'"
if etag is not None and new_etag == etag:
response.status_code = 304
return response
data = await client.get_avatar_data(address, info["sha1"])
if data is None:
response.status_code = 404
return response
response.status_code = 200
if request.method == "HEAD":
response.content_length = len(data)
return response
response.set_data(data)
return response