Files
CTFd/CTFd/views.py

272 lines
8.2 KiB
Python

from flask import (
current_app as app,
render_template,
request,
redirect,
abort,
url_for,
session,
Blueprint,
Response,
send_file,
)
from flask.helpers import safe_join
from CTFd.models import db, Users, Admins, Teams, Files, Pages, Notifications
from CTFd.utils import markdown
from CTFd.cache import cache
from CTFd.utils import get_config, set_config
from CTFd.utils.user import authed, get_current_user
from CTFd.utils import config
from CTFd.utils.uploads import get_uploader
from CTFd.utils.config.pages import get_page
from CTFd.utils.config.visibility import challenges_visible
from CTFd.utils.security.auth import login_user
from CTFd.utils.security.csrf import generate_nonce
from CTFd.utils import user as current_user
from CTFd.utils.dates import ctftime, ctf_ended, view_after_ctf
from CTFd.utils.decorators import authed_only
from CTFd.utils.security.signing import (
unserialize,
BadTimeSignature,
SignatureExpired,
BadSignature,
)
from sqlalchemy.exc import IntegrityError
import os
views = Blueprint("views", __name__)
@views.route("/setup", methods=["GET", "POST"])
def setup():
if not config.is_setup():
if not session.get("nonce"):
session["nonce"] = generate_nonce()
if request.method == "POST":
ctf_name = request.form["ctf_name"]
set_config("ctf_name", ctf_name)
# CSS
set_config("start", "")
# Admin user
name = request.form["name"]
email = request.form["email"]
password = request.form["password"]
admin = Admins(
name=name, email=email, password=password, type="admin", hidden=True
)
user_mode = request.form["user_mode"]
set_config("user_mode", user_mode)
# Index page
index = """<div class="row">
<div class="col-md-6 offset-md-3">
<img class="w-100 mx-auto d-block" style="max-width: 500px;padding: 50px;padding-top: 14vh;" src="themes/core/static/img/logo.png" />
<h3 class="text-center">
<p>A cool CTF platform from <a href="https://ctfd.io">ctfd.io</a></p>
<p>Follow us on social media:</p>
<a href="https://twitter.com/ctfdio"><i class="fab fa-twitter fa-2x" aria-hidden="true"></i></a>&nbsp;
<a href="https://facebook.com/ctfdio"><i class="fab fa-facebook fa-2x" aria-hidden="true"></i></a>&nbsp;
<a href="https://github.com/ctfd"><i class="fab fa-github fa-2x" aria-hidden="true"></i></a>
</h3>
<br>
<h4 class="text-center">
<a href="admin">Click here</a> to login and setup your CTF
</h4>
</div>
</div>""".format(
request.script_root
)
page = Pages(title=None, route="index", content=index, draft=False)
# Visibility
set_config("challenge_visibility", "private")
set_config("registration_visibility", "public")
set_config("score_visibility", "public")
set_config("account_visibility", "public")
# Start time
set_config("start", None)
set_config("end", None)
set_config("freeze", None)
# Verify emails
set_config("verify_emails", None)
set_config("mail_server", None)
set_config("mail_port", None)
set_config("mail_tls", None)
set_config("mail_ssl", None)
set_config("mail_username", None)
set_config("mail_password", None)
set_config("mail_useauth", None)
set_config("setup", True)
try:
db.session.add(admin)
db.session.commit()
except IntegrityError:
db.session.rollback()
try:
db.session.add(page)
db.session.commit()
except IntegrityError:
db.session.rollback()
login_user(admin)
db.session.close()
app.setup = False
with app.app_context():
cache.clear()
return redirect(url_for("views.static_html"))
return render_template("setup.html", nonce=session.get("nonce"))
return redirect(url_for("views.static_html"))
@views.route("/notifications", methods=["GET"])
def notifications():
notifications = Notifications.query.order_by(Notifications.id.desc()).all()
return render_template("notifications.html", notifications=notifications)
@views.route("/settings", methods=["GET"])
@authed_only
def settings():
user = get_current_user()
name = user.name
email = user.email
website = user.website
affiliation = user.affiliation
country = user.country
prevent_name_change = get_config("prevent_name_change")
confirm_email = get_config("verify_emails") and not user.verified
return render_template(
"settings.html",
name=name,
email=email,
website=website,
affiliation=affiliation,
country=country,
prevent_name_change=prevent_name_change,
confirm_email=confirm_email,
)
@views.route("/static/user.css")
def custom_css():
"""
Custom CSS Handler route
:return:
"""
return Response(get_config("css"), mimetype="text/css")
@views.route("/", defaults={"route": "index"})
@views.route("/<path:route>")
def static_html(route):
"""
Route in charge of routing users to Pages.
:param route:
:return:
"""
page = get_page(route)
if page is None:
abort(404)
else:
if page.auth_required and authed() is False:
return redirect(url_for("auth.login", next=request.full_path))
return render_template("page.html", content=markdown(page.content))
@views.route("/files", defaults={"path": ""})
@views.route("/files/<path:path>")
def files(path):
"""
Route in charge of dealing with making sure that CTF challenges are only accessible during the competition.
:param path:
:return:
"""
f = Files.query.filter_by(location=path).first_or_404()
if f.type == "challenge":
if challenges_visible():
if current_user.is_admin() is False:
if not ctftime():
if ctf_ended() and view_after_ctf():
pass
else:
abort(403)
else:
if not ctftime():
abort(403)
# Allow downloads if a valid token is provided
token = request.args.get("token", "")
try:
data = unserialize(token, max_age=3600)
user_id = data.get("user_id")
team_id = data.get("team_id")
file_id = data.get("file_id")
user = Users.query.filter_by(id=user_id).first()
team = Teams.query.filter_by(id=team_id).first()
# Check user is admin if challenge_visibility is admins only
if (
get_config("challenge_visibility") == "admins"
and user.type != "admin"
):
abort(403)
# Check that the user exists and isn't banned
if user:
if user.banned:
abort(403)
else:
abort(403)
# Check that the team isn't banned
if team:
if team.banned:
abort(403)
else:
pass
# Check that the token properly refers to the file
if file_id != f.id:
abort(403)
# The token isn't expired or broken
except (BadTimeSignature, SignatureExpired, BadSignature):
abort(403)
uploader = get_uploader()
try:
return uploader.download(f.location)
except IOError:
abort(404)
@views.route("/themes/<theme>/static/<path:path>")
def themes(theme, path):
"""
General static file handler
:param theme:
:param path:
:return:
"""
filename = safe_join(app.root_path, "themes", theme, "static", path)
if os.path.isfile(filename):
return send_file(filename)
else:
abort(404)