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from flask import Blueprint, render_template, redirect, url_for, request, flash, session |
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from flask_login import login_user, login_required, logout_user, current_user |
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from werkzeug.security import generate_password_hash, check_password_hash |
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from .models import User |
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from app import db |
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import pandas as pd |
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import os |
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from functools import wraps |
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auth = Blueprint('auth', __name__) |
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@auth.route('/login') |
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def login(): |
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return render_template('login.html') |
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@auth.route('/login', methods=['POST']) |
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def login_post(): |
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# login code goes here |
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email = request.form.get('email') |
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password = request.form.get('password') |
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remember = True if request.form.get('remember') else False |
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user = User.query.filter_by(email=email).first() |
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# check if the user actually exists |
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# take the user-supplied password, hash it, and compare it to the hashed password in the database |
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if not user or not check_password_hash(user.password, password): |
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flash('Please check your login details and try again.') |
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return redirect(url_for('auth.login')) # if the user doesn't exist or password is wrong, reload the page |
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# fix for no admin user to make current user an admin |
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user_test = User.query.filter_by(admin=True).first() |
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if not user_test: |
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user.admin = 1 |
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db.session.commit() |
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# if the above check passes, then we know the user has the right credentials |
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login_user(user, remember=remember) |
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session['name'] = user.name |
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session['email'] = user.email |
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return redirect(url_for('main.index')) |
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@auth.route('/signup') |
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def signup(): |
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try: |
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engine = db.create_engine(os.environ.get('DATABASE_URL')).connect() |
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except: |
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engine = db.create_engine('sqlite:///db.sqlite').connect() |
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try: |
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df = pd.read_sql('SELECT * FROM settings;', engine) |
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if df['value'][0] == 1: |
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return render_template('login.html') |
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except: |
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pass |
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return render_template('signup.html') |
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@auth.route('/signup', methods=['POST']) |
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def signup_post(): |
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# code to validate and add user to database goes here |
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email = request.form.get('email') |
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name = request.form.get('name') |
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password = request.form.get('password') |
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user = User.query.filter_by(email=email).first() # if this returns a user, then the email already exists in database |
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if user: # if a user is found, we want to redirect back to signup page so user can try again |
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return redirect(url_for('auth.signup')) |
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# if no admin user, make new user an admin |
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user_test = User.query.filter_by(admin=True).first() |
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if not user_test: |
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admin = 1 |
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else: |
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admin = 0 |
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# create a new user with the form data. Hash the password so the plaintext version isn't saved. |
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new_user = User(email=email, name=name, password=generate_password_hash(password, method='scrypt'), admin=admin) |
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# add the new user to the database |
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db.session.add(new_user) |
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db.session.commit() |
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if user: # if a user is found, we want to redirect back to signup page so user can try again |
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flash('Email address already exists') |
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return redirect(url_for('auth.login')) |
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@auth.route('/logout') |
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@login_required |
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def logout(): |
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logout_user() |
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return redirect(url_for('main.index')) |
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def admin_required(f): |
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@wraps(f) |
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def decorated_function(*args, **kwargs): |
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if current_user.admin: |
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return f(*args, **kwargs) |
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else: |
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return redirect(url_for('main.index')) |
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return decorated_function |
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