from flask import Blueprint, make_response, session, request, redirect, url_for from flask import current_app as app from voluptuous import Schema, Length, Required from models import db, LoginTokens, Users from decorators import api_wrapper, WebException from schemas import verify_to_schema, check import datetime import logger import re import requests import team import utils ############### # USER ROUTES # ############### blueprint = Blueprint("user", __name__) @blueprint.route("/forgot", methods=["POST"]) @blueprint.route("/forgot/", methods=["GET", "POST"]) @api_wrapper def user_forgot_password(token=None): params = utils.flat_multi(request.form) if token is not None: user = get_user(reset_token=token).first() if user is None: raise WebException("Invalid reset token.") # We are viewing the actual reset form if request.method == "GET": return { "success": 1, "message": ""} # Submission of actual reset form if request.method == "POST": password = params.get("password") confirm_password = params.get("confirm_password") if password != confirm_password: raise WebException("Passwords do not match.") else: user.password = utils.hash_password(password) user.reset_token = None current_session = db.session.object_session(user) current_session.add(user) current_session.commit() return { "success": 1, "message": "Success!" } else: email = params.get("email").lower() user = get_user(email=email).first() if user is None: raise WebException("User with that email does not exist.") token = utils.generate_string(length=64) user.reset_token = token current_session = db.session.object_session(user) current_session.add(user) current_session.commit() reset_link = "%s/forgot/%s" % ("127.0.0.1:8000", token) subject = "EasyCTF password reset" body = """%s,\n\nA request to reset your EasyCTF password has been made. If you did not request this password reset, you may safely ignore this email and delete it.\n\nYou may reset your password by clicking this link or pasting it to your browser.\n\n%s\n\nThis link can only be used once, and will lead you to a page where you can reset your password.\n\nGood luck!\n\n- The EasyCTF Team""" % (user.username, reset_link) response = utils.send_email(email, subject, body).json() if "Queued" in response["message"]: return { "success": 1, "message": "Email sent to %s" % email } else: raise WebException(response["message"]) @blueprint.route("/register", methods=["POST"]) @api_wrapper def user_register(): params = utils.flat_multi(request.form) name = params.get("name") email = params.get("email") username = params.get("username") password = params.get("password") password_confirm = params.get("password_confirm") utype = int(params.get("type")) if password != password_confirm: raise WebException("Passwords do not match.") verify_to_schema(UserSchema, params) user = Users(name, username, email, password, utype) with app.app_context(): db.session.add(user) db.session.commit() logger.log(__name__, logger.INFO, "%s registered with %s" % (name.encode("utf-8"), email.encode("utf-8"))) login_user(username, password) return { "success": 1, "message": "Success!" } @blueprint.route("/logout", methods=["GET"]) @api_wrapper def user_logout(): sid = session["sid"] username = session["username"] with app.app_context(): expired = LoginTokens.query.filter_by(username=username).all() for expired_token in expired: db.session.delete(expired_token) db.session.commit() session.clear() @blueprint.route("/login", methods=["POST"]) @api_wrapper def user_login(): params = utils.flat_multi(request.form) username = params.get("username") password = params.get("password") result = login_user(username, password) if result != True: raise WebException("Please check if your username/password are correct.") return { "success": 1, "message": "Success!" } @blueprint.route("/status", methods=["GET"]) @api_wrapper def user_status(): logged_in = is_logged_in() result = { "success": 1, "logged_in": logged_in, "admin": is_admin(), "username": session["username"] if logged_in else "", } if logged_in: result["has_team"] = in_team(get_user().first()) return result @blueprint.route("/info", methods=["GET"]) @api_wrapper def user_info(): logged_in = is_logged_in() username = utils.flat_multi(request.args).get("username") if username is None: if logged_in: username = session["username"] if username is None: raise WebException("No user specified.") me = False if not("username" in session) else username.lower() == session["username"].lower() user = get_user(username_lower=username.lower()).first() if user is None: raise WebException("User not found.") show_email = me if logged_in else False user_in_team = in_team(user) userdata = { "user_found": True, "name": user.name, "username": user.username, "type": ["Student", "Instructor", "Observer"][user.utype - 1], "admin": user.admin, "registertime": datetime.datetime.fromtimestamp(user.registertime).isoformat() + "Z", "me": me, "show_email": show_email, "in_team": user_in_team } if show_email: userdata["email"] = user.email if user_in_team: userdata["team"] = team.get_team_info(tid=user.tid) return { "success": 1, "user": userdata } ################## # USER FUNCTIONS # ################## __check_username = lambda username: get_user(username_lower=username.lower()).first() is None __check_email = lambda email: get_user(email=email.lower()).first() is None UserSchema = Schema({ Required("email"): check( ([str, Length(min=4, max=128)], "Your email should be between 4 and 128 characters long."), ([__check_email], "Someone already registered this email."), ([utils.__check_email_format], "Please enter a legit email.") ), Required("name"): check( ([str, Length(min=4, max=128)], "Your name should be between 4 and 128 characters long.") ), Required("username"): check( ([str, Length(min=4, max=32)], "Your username should be between 4 and 32 characters long."), ([utils.__check_alphanumeric], "Please only use alphanumeric characters in your username."), ([__check_username], "This username is taken, did you forget your password?") ), Required("password"): check( ([str, Length(min=4, max=64)], "Your password should be between 4 and 64 characters long."), ([utils.__check_ascii], "Please only use ASCII characters in your password."), ), Required("type"): check( ([str, lambda x: x.isdigit()], "Please use the online form.") ), "notify": str }, extra=True) def get_user(username=None, username_lower=None, email=None, uid=None, reset_token=None): match = {} if username != None: match.update({ "username": username }) elif username_lower != None: match.update({ "username_lower": username_lower }) elif uid != None: match.update({ "uid": uid }) elif email != None: match.update({ "email": email }) elif is_logged_in(): match.update({ "username": session["username"] }) elif reset_token != None: match.update({ "reset_token": reset_token }) with app.app_context(): result = Users.query.filter_by(**match) return result def login_user(username, password): user = get_user(username_lower=username.lower()).first() if user is None: return False correct = utils.check_password(user.password, password) if not correct: return False useragent = request.headers.get("User-Agent") ip = request.remote_addr with app.app_context(): expired = LoginTokens.query.filter_by(username=username).all() for expired_token in expired: db.session.delete(expired_token) token = LoginTokens(user.uid, user.username, ua=useragent, ip=ip) db.session.add(token) db.session.commit() session["sid"] = token.sid session["username"] = token.username session["admin"] = user.admin == True if user.tid is not None and user.tid >= 0: session["tid"] = user.tid return True def in_team(user): return user.tid is not None and user.tid >= 0 def is_logged_in(): if not("sid" in session and "username" in session): return False sid = session["sid"] username = session["username"] token = LoginTokens.query.filter_by(sid=sid).first() if token is None: return False useragent = request.headers.get("User-Agent") ip = request.remote_addr if token.username != username: return False if token.ua != useragent: return False return True def is_admin(): return is_logged_in() and "admin" in session and session["admin"] def validate_captcha(form): if "captcha_response" not in form: return False captcha_response = form["captcha_response"] data = {"secret": "6Lc4xhMTAAAAACFaG2NyuKoMdZQtSa_1LI76BCEu", "response": captcha_response} response = requests.post("https://www.google.com/recaptcha/api/siteverify", data=data) return response.json()["success"]