def is_unique_username(self, username):
all_users = UserDataHandler.get_all()
for user in all_users:
if username == user.username:
return False
return True
def post(self):
signup = Signup()
self.response.headers['Content-Type'] = 'text/html'
errors = {}
username = self.request.get('username')
password = self.request.get('password')
verify = self.request.get('verify')
email = self.request.get('email')
if not signup.is_valid_username(username):
errors['username_error'] = 'Invalid username.'
elif not signup.is_unique_username(username):
errors['username_error'] = 'Username taken.'
if not signup.is_valid_password(password):
errors['password_error'] = 'Invalid password.'
elif password != verify:
errors['verify_error'] = 'Passwords don\'t match.'
if not signup.is_valid_email(email):
errors['email_error'] = 'Invalid email.'
username = self.escape_html(username)
email = self.escape_html(email)
if errors:
self.write_template('signup.html', username = username, email =
email, **errors)
else:
user_id = UserDataHandler.put(username, password, email)
user_id_hash = Encryption.make_user_id_hash(user_id)
self.response.headers.add_header('Set-Cookie',
'user_id=%(user_id)s|%(user_id_hash)s; Path=/'
% {'user_id': user_id, 'user_id_hash': user_id_hash})
self.redirect('/unit5/welcome')
def get(self):
self.response.headers['Content-Type'] = 'text/html'
user_id_cookie = self.request.cookies.get('user_id')
if user_id_cookie:
user_id = user_id_cookie.split('|')[0]
user_id_hash = user_id_cookie.split('|')[1]
if Encryption.is_valid_cookie(user_id, user_id_hash):
user = UserDataHandler.get_by_id(int(user_id))
self.response.out.write('Welcome, <b>' + user.username + '</b>!')
else:
self.redirect('/unit4/signup')
def post(self):
self.response.headers['Content-Type'] = 'text/html'
username = self.request.get('username')
password = self.request.get('password')
username = self.escape_html(username)
user_list = UserDataHandler.get_by_username(username)
if user_list and Encryption.is_valid_password(username, password,
user_list[0].password):
user = user_list[0]
user_id = user.key().id()
user_id_hash = Encryption.make_user_id_hash(user_id)
self.response.headers.add_header('Set-Cookie',
'user_id=%(user_id)s|%(user_id_hash)s; Path=/'
% {'user_id': user_id, 'user_id_hash': user_id_hash})
self.redirect('/unit5/welcome')
else:
self.write_template('login.html', username = username, login_error =
'invalid login')
