def load(self, yaml_timestamp):
"""Load the data from disk.
Load from a pickle file if available, or load the original YAML
and write a pickle file otherwise.
"""
try_pickle = self.try_pickle if self.try_pickle is not None else is_heroku()
if not try_pickle:
return self.load_uncached()
stat = os.stat(self.pickle_filename) if os.path.exists(self.pickle_filename) else None
if stat and stat.st_mtime >= yaml_timestamp:
# Pickle file is newer than the YAML, just read that
return self.load_pickle()
data = self.load_uncached()
# Write a pickle file, first write to a tempfile then rename
# into place because multiple processes might try to do this in parallel,
# plus we only want `path.exists(pickle_file)` to return True once the
# file is actually complete and readable.
with atomic_write_file(self.pickle_filename) as f:
pickle.dump(data, f)
return data
def login():
body = request.json
# Validations
if not isinstance(body, dict):
return 'body must be an object', 400
if not isinstance(body.get('username'), str):
return 'username must be a string', 400
if not isinstance(body.get('password'), str):
return 'password must be a string', 400
# If username has an @-sign, then it's an email
if '@' in body['username']:
user = DATABASE.user_by_email(body['username'])
else:
user = DATABASE.user_by_username(body['username'])
if not user:
return 'invalid username/password', 403
if not check_password(body['password'], user['password']):
return 'invalid username/password', 403
# If the number of bcrypt rounds has changed, create a new hash.
new_hash = None
if config['bcrypt_rounds'] != extract_bcrypt_rounds(user['password']):
new_hash = hash(body['password'], make_salt())
cookie = make_salt()
DATABASE.store_token({
'id': cookie,
'username': user['username'],
'ttl': times() + session_length
})
if new_hash:
DATABASE.record_login(user['username'], new_hash)
else:
DATABASE.record_login(user['username'])
resp = make_response({})
# We set the cookie to expire in a year, just so that the browser won't invalidate it if the same cookie gets renewed by constant use.
# The server will decide whether the cookie expires.
resp.set_cookie(TOKEN_COOKIE_NAME,
value=cookie,
httponly=True,
secure=is_heroku(),
samesite='Lax',
path='/',
max_age=365 * 24 * 60 * 60)
# Remember the current user on the session. This is "new style" logins, which should ultimately
# replace "old style" logins (with the cookie above), as it requires fewer database calls.
remember_current_user(user)
return resp
return redirect(url, code=302)
# Unique random key for sessions.
# For settings with multiple workers, an environment variable is required, otherwise cookies will be constantly removed and re-set by different workers.
if utils.is_production():
if not os.getenv('SECRET_KEY'):
raise RuntimeError(
'The SECRET KEY must be provided for non-dev environments.')
app.config['SECRET_KEY'] = os.getenv('SECRET_KEY')
else:
app.config['SECRET_KEY'] = os.getenv('SECRET_KEY', uuid.uuid4().hex)
if utils.is_heroku():
app.config.update(
SESSION_COOKIE_SECURE=True,
SESSION_COOKIE_HTTPONLY=True,
SESSION_COOKIE_SAMESITE='Lax',
)
# Set security attributes for cookies in a central place - but not when running locally, so that session cookies work well without HTTPS
Compress(app)
Commonmark(app)
parse_logger = jsonbin.MultiParseLogger(jsonbin.JsonBinLogger.from_env_vars(),
jsonbin.S3ParseLogger.from_env_vars())
querylog.LOG_QUEUE.set_transmitter(
aws_helpers.s3_querylog_transmitter_from_env())
def signup():
body = request.json
# Validations, mandatory fields
if not isinstance(body, dict):
return 'body must be an object', 400
if not isinstance(body.get('username'), str):
return 'username must be a string', 400
if '@' in body['username']:
return 'username cannot contain an @-sign', 400
if ':' in body['username']:
return 'username cannot contain a colon', 400
if len(body['username'].strip()) < 3:
return 'username must be at least three characters long', 400
if not isinstance(body.get('password'), str):
return 'password must be a string', 400
if len(body['password']) < 6:
return 'password must be at least six characters long', 400
if not isinstance(body.get('email'), str):
return 'email must be a string', 400
if not valid_email(body['email']):
return 'email must be a valid email', 400
# Validations, optional fields
if 'country' in body:
if not body['country'] in countries:
return 'country must be a valid country', 400
if 'birth_year' in body:
if not isinstance(body.get('birth_year'),
int) or body['birth_year'] <= 1900 or body[
'birth_year'] > datetime.datetime.now().year:
return 'birth_year must be a year between 1900 and ' + datetime.datetime.now(
).year, 400
if 'gender' in body:
if body['gender'] != 'm' and body['gender'] != 'f' and body[
'gender'] != 'o':
return 'gender must be m/f/o', 400
if 'prog_experience' in body and body['prog_experience'] not in [
'yes', 'no'
]:
return 'If present, prog_experience must be "yes" or "no"', 400
if 'experience_languages' in body:
if not isinstance(body['experience_languages'], list):
return 'If present, experience_languages must be an array', 400
for language in body['experience_languages']:
if language not in [
'scratch', 'other_block', 'python', 'other_text'
]:
return 'Invalid language: ' + str(language), 400
user = DATABASE.user_by_username(body['username'].strip().lower())
if user:
return 'username exists', 403
email = DATABASE.user_by_email(body['email'].strip().lower())
if email:
return 'email exists', 403
hashed = hash(body['password'], make_salt())
token = make_salt()
hashed_token = hash(token, make_salt())
username = body['username'].strip().lower()
email = body['email'].strip().lower()
if not is_testing_request(
request) and 'subscribe' in body and body['subscribe'] == True:
# If we have a Mailchimp API key, we use it to add the subscriber through the API
if os.getenv('MAILCHIMP_API_KEY') and os.getenv(
'MAILCHIMP_AUDIENCE_ID'):
# The first domain in the path is the server name, which is contained in the Mailchimp API key
request_path = 'https://' + os.getenv(
'MAILCHIMP_API_KEY').split(
'-')[1] + '.api.mailchimp.com/3.0/lists/' + os.getenv(
'MAILCHIMP_AUDIENCE_ID') + '/members'
request_headers = {
'Content-Type': 'application/json',
'Authorization': 'apikey ' + os.getenv('MAILCHIMP_API_KEY')
}
request_body = {'email_address': email, 'status': 'subscribed'}
r = requests.post(request_path,
headers=request_headers,
data=json.dumps(request_body))
subscription_error = None
if r.status_code != 200 and r.status_code != 400:
subscription_error = True
# We can get a 400 if the email is already subscribed to the list. We should ignore this error.
if r.status_code == 400 and not re.match(
'.*already a list member', r.text):
subscription_error = True
# If there's an error in subscription through the API, we report it to the main email address
if subscription_error:
send_email(
config['email']['sender'],
'ERROR - Subscription to Hedy newsletter on signup',
email, '<p>' + email + '</p><pre>Status:' +
str(r.status_code) + ' Body:' + r.text + '</pre>')
# Otherwise, we send an email to notify about this to the main email address
else:
send_email(config['email']['sender'],
'Subscription to Hedy newsletter on signup', email,
'<p>' + email + '</p>')
user = {
'username': username,
'password': hashed,
'email': email,
'created': timems(),
'verification_pending': hashed_token,
'last_login': timems()
}
for field in [
'country', 'birth_year', 'gender', 'prog_experience',
'experience_languages'
]:
if field in body:
if field == 'experience_languages' and len(body[field]) == 0:
continue
user[field] = body[field]
DATABASE.store_user(user)
print(user)
# We automatically login the user
cookie = make_salt()
DATABASE.store_token({
'id': cookie,
'username': user['username'],
'ttl': times() + session_length
})
# If this is an e2e test, we return the email verification token directly instead of emailing it.
if is_testing_request(request):
resp = make_response({'username': username, 'token': hashed_token})
# Otherwise, we send an email with a verification link and we return an empty body
else:
send_email_template(
'welcome_verify', email, requested_lang(),
os.getenv('BASE_URL', 'http://localhost') +
'/auth/verify?username='******'&token=' + urllib.parse.quote_plus(hashed_token))
resp = make_response({})
# We set the cookie to expire in a year, just so that the browser won't invalidate it if the same cookie gets renewed by constant use.
# The server will decide whether the cookie expires.
resp.set_cookie(cookie_name,
value=cookie,
httponly=True,
secure=is_heroku(),
samesite='Lax',
path='/',
max_age=365 * 24 * 60 * 60)
return resp
