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import datetime
import hashlib
import uuid
import marko
import quart as q
from . import db
MAX_LOGIN_TIME = datetime.timedelta(days=1)
blueprint = q.Blueprint("admin", __name__, url_prefix="/admin")
def get_now() -> datetime.datetime:
return datetime.datetime.now(tz=datetime.timezone.utc)
async def login_check():
if (token := q.session.get("login")) is None:
return q.redirect(f"/admin/login?return={q.request.path}")
pool = db.get_db()
async with pool.acquire() as conn:
res = await conn.fetch(
"SELECT * FROM admin_logins WHERE admin_logins.id = $1;", token
)
if not res:
return q.redirect(f"/admin/login?return={q.request.path}")
login = db.AdminLogin.from_record(res[0])
created_at = login.created_at.astimezone(datetime.timezone.utc)
now = get_now()
if (now - created_at) > MAX_LOGIN_TIME:
return q.redirect(f"/admin/login?return={q.request.path}")
return None
@blueprint.route("/")
async def index():
resp = await login_check()
if resp is not None:
return resp
return await q.render_template("admin/index.html", title="Admin Panel")
@blueprint.route("/login", methods=["GET", "POST"])
async def login():
if q.request.method == "GET":
return await q.render_template("admin/login.html", title="Admin Login")
queries = q.request.args
ip_addr = q.request.remote_addr
form = await q.request.form
if ip_addr is None:
return q.Response(
"<p>An IP address MUST be provided in order to log in. It is required for logging purposes.</p>",
status=401,
)
if (redirect_url := queries.get("return")) is None:
redirect_url = "/admin" # default route
pool = db.get_db()
token: str | None = q.session.get("login")
if token is not None:
async with pool.acquire() as conn:
logins = await conn.fetch(
"SELECT * FROM admin_logins WHERE admin_logins.id = $1;", token
)
if not logins:
del q.session["login"]
else:
login_info = db.AdminLogin.from_record(logins[0])
created_at = login_info.created_at.astimezone(tz=datetime.timezone.utc)
now = get_now()
if (now - created_at) > MAX_LOGIN_TIME:
del q.session["login"]
else:
return q.Response(
status=200,
headers={
"HX-Redirect": redirect_url,
},
)
if form:
password = hashlib.sha256(form["password"].encode()).hexdigest()
# FIXME: this is insecure due to timing attacks. use a library for this comparison.
if password == q.current_app.config["ADMIN_PASSWORD"]:
async with pool.acquire() as conn:
ids = await conn.fetch(
"INSERT INTO admin_logins (ipaddr) VALUES ($1) RETURNING id;",
ip_addr,
)
id: uuid.UUID = ids[0]["id"]
q.session["login"] = id.hex
return q.Response(
status=200,
headers={
"HX-Redirect": redirect_url,
},
)
else:
return q.Response(
"<p>Invalid username or password. You have 10 attempts left before a ban.</p>",
status=401,
)
return q.Response(
"<p>Your time has expired and you did not provide a form to log in. Please do that!</p>",
status=401,
)
@blueprint.route("/logout")
async def logout():
if q.session.get("login") is not None:
del q.session["login"]
return q.redirect("/")
@blueprint.route("/blog")
async def blog_posts():
resp = await login_check()
if resp is not None:
return resp
posts = await db.get_posts(public_only=False)
return await q.render_template(
"admin/blog.html",
title="Blog Posts",
posts=posts,
)
@blueprint.route("/blog/create", methods=["GET", "POST"])
async def create_blog_post():
resp = await login_check()
if resp is not None:
return resp
if q.request.method == "GET":
return await q.render_template("admin/blog_create.html", title="Create a Post")
data = await q.request.form
text: str = data["text"]
title: str = data["title"]
description: str | None = data.get("description")
public: bool = data.get("public") == "on"
formatted = marko.convert(text)
pool = db.get_db()
async with pool.acquire() as conn:
await conn.execute(
"INSERT INTO posts (text, title, description, original, public) VALUES ($1, $2, $3, $4, $5);",
formatted,
title,
description,
text,
public,
)
return q.redirect("/admin/blog")
@blueprint.route("/blog/<id>", methods=["GET", "POST"])
async def edit_blog_post(id: str):
resp = await login_check()
if resp is not None:
return resp
pool = db.get_db()
if q.request.method == "GET":
post = await db.get_post(id, public_only=False)
if not post:
q.abort(404)
return await q.render_template(
"admin/blog_edit.html", title="Edit Blog Post", post=post
)
data = await q.request.form
text: str = data["text"]
title: str = data["title"]
description: str | None = data.get("description")
public: bool = data.get("public") == "on"
formatted = marko.convert(text)
async with pool.acquire() as conn:
await conn.execute(
"UPDATE posts SET text = $1, title = $2, description = $3, original = $4, public = $5 WHERE posts.id = $6;",
formatted,
title,
description,
text,
public,
id,
)
return q.redirect("/admin/blog")
@blueprint.route("/blog/<id>", methods=["DELETE"])
async def delete_blog_post(id: str):
resp = await login_check()
if resp is not None:
return resp
pool = db.get_db()
async with pool.acquire() as conn:
await conn.execute("DELETE FROM comments WHERE comments.post_id = $1;", id)
await conn.execute("DELETE FROM posts WHERE posts.id = $1;", id)
return q.Response(status=204)
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