ColdCore/app.py

from flask import Flask, render_template, session, redirect, url_for, request, g, flash
app = Flask(__name__)
app.secret_key = "nope"

from database import Team, TeamAccess, Challenge, ChallengeSolve, ChallengeFailure, ScoreAdjustment, db
from datetime import datetime
from peewee import fn

from utils import decorators, flag, cache, misc, captcha, email
import utils.scoreboard

import config
import utils
import redis
import requests

import logging
logging.basicConfig(level=logging.DEBUG)

@app.before_request
def make_info_available():
    if "team_id" in session:
        g.team = Team.get(Team.id == session["team_id"])

@app.context_processor
def scoreboard_variables():
    var = dict(config=config)
    if "team_id" in session:
        var["logged_in"] = True
        var["team"] = g.team
    else:
        var["logged_in"] = False

    return var

# Blueprints
from modules import api, admin
app.register_blueprint(api.api)
app.register_blueprint(admin.admin)

# Publically accessible things

@app.route('/')
def root():
    return redirect(url_for('scoreboard'))

@app.route('/scoreboard/')
def scoreboard():
    data = cache.get_complex("scoreboard")
    graphdata = cache.get_complex("graph")
    if not data or not graphdata:
        data = utils.scoreboard.calculate_scores()
        graphdata = utils.scoreboard.calculate_graph(data)
        utils.scoreboard.set_complex("scoreboard", data, 1)
        utils.scoreboard.set_complex("graph", graphdata, 1)

    return render_template("scoreboard.html", data=data, graphdata=graphdata)

@app.route('/login/', methods=["GET", "POST"])
def login():
    if request.method == "GET":
        return render_template("login.html")
    elif request.method == "POST":
        team_key = request.form["team_key"]

        try:
            team = Team.get(Team.key == team_key)
            TeamAccess.create(team=team, ip=misc.get_ip(), time=datetime.now())
            session["team_id"] = team.id
            flash("Login success.")
            return redirect(url_for('dashboard'))
        except Team.DoesNotExist:
            flash("Couldn't find your team. Check your team key.", "error")
            return render_template("login.html")

@app.route('/register/', methods=["GET", "POST"])
def register():
    if request.method == "GET":
        return render_template("register.html")
    elif request.method == "POST":
        error, message = captcha.verify_captcha()
        if error:
            flash(message)
            return render_template("register.html")

        team_name = request.form["team_name"]
        team_email = request.form["team_email"]
        team_elig = "team_eligibility" in request.form
        affiliation = request.form["affiliation"]
        team_key = misc.generate_team_key()
        confirmation_key = misc.generate_confirmation_key()

        team = Team.create(name=team_name, email=team_email, eligible=team_elig, affiliation=affiliation, key=team_key,
                           email_confirmation_key=confirmation_key)
        TeamAccess.create(team=team, ip=misc.get_ip(), time=datetime.now())

        email.send_confirmation_email(team_email, confirmation_key, team_key)

        session["team_id"] = team.id
        flash("Team created.")
        return redirect(url_for('dashboard'))

@app.route('/logout/')
def logout():
    session.pop("team_id")
    flash("You've successfully logged out.")
    return redirect(url_for('root'))

# Debugging things

@app.route('/assign-random/')
def assign_random():
    if not app.debug:
        return "Nope."
    session["team_id"] = Team.select().order_by(fn.Random()).get().id
    return "OK"

# Things that require a team

@app.route('/confirm_email/', methods=["POST"])
@decorators.login_required
def confirm_email():
    if request.form["confirmation_key"] == g.team.email_confirmation_key:
        flash("Email confirmed!")
        g.team.email_confirmed = True
        g.team.save()
    else:
        flash("Incorrect confirmation key.")
    return redirect(url_for('dashboard'))

@app.route('/team/', methods=["GET", "POST"])
@decorators.login_required
def dashboard():
    if request.method == "GET":
        team_solves = ChallengeSolve.select(ChallengeSolve, Challenge).join(Challenge).where(ChallengeSolve.team == g.team)
        team_adjustments = ScoreAdjustment.select().where(ScoreAdjustment.team == g.team)
        team_score = sum([i.challenge.points for i in team_solves] + [i.value for i in team_adjustments])
        first_login = False
        if g.team.first_login:
            first_login = True
            g.team.first_login = False
            g.team.save()
        return render_template("dashboard.html", team_solves=team_solves, team_adjustments=team_adjustments, team_score=team_score, first_login=first_login)
    elif request.method == "POST":
        if g.redis.get("ul{}".format(session["team_id"])):
            flash("You're changing your information too fast!")
            return redirect(url_for('dashboard'))

        g.redis.set("ul{}".format(session["team_id"]), str(datetime.now()), 120)
        team_name = request.form["team_name"]
        team_email = request.form["team_email"]
        affiliation = request.form["affiliation"]
        team_elig = "team_eligibility" in request.form

        email_changed = (team_email != g.team.email)

        g.team.name = team_name
        g.team.email = team_email
        g.team.affiliation = affiliation
        g.team.eligible = team_elig
        if email_changed:
            g.team.email_confirmation_key = misc.generate_confirmation_key()
            g.team.email_confirmed = False
            misc.send_confirmation_email(team_email, g.team.email_confirmation_key, g.team.key)
            flash("Changes saved. Please check your email for a new confirmation key.")
        else:
            flash("Changes saved.")
        g.team.save()


        return redirect(url_for('dashboard'))

@app.route('/challenges/')
@decorators.competition_running_required
@decorators.confirmed_email_required
def challenges():
    chals = Challenge.select().order_by(Challenge.points)
    solved = Challenge.select().join(ChallengeSolve).where(ChallengeSolve.team == g.team)
    return render_template("challenges.html", challenges=chals, solved=solved)

@app.route('/submit/<int:challenge>/', methods=["POST"])
@decorators.competition_running_required
@decorators.confirmed_email_required
def submit(challenge):
    chal = Challenge.get(Challenge.id == challenge)
    flagval = request.form["flag"]

    code, message = flag.submit_flag(g.team, chal, flagval)
    flash(message)
    return redirect(url_for('challenges'))

# Manage Peewee database sessions and Redis

@app.before_request
def before_request():
    db.connect()
    g.redis = redis.StrictRedis()

@app.teardown_request
def teardown_request(exc):
    db.close()
    g.redis.connection_pool.disconnect()

# CSRF things

@app.before_request
def csrf_protect():
    if app.debug:
        return
    if request.method == "POST":
        token = session.pop('_csrf_token', None)
        if not token or token != request.form["_csrf_token"]:
            return "Invalid CSRF token!"

def generate_csrf_token():
    if '_csrf_token' not in session:
        session['_csrf_token'] = misc.generate_random_string(64)
    return session['_csrf_token']

app.jinja_env.globals['csrf_token'] = generate_csrf_token

if __name__ == '__main__':
    app.run(debug=True, port=8001)