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auth.py
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auth.py
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# project/api/v1/auth.py
from flask import Blueprint, request, current_app
from sqlalchemy import or_
from facepy import GraphAPI
from flask_accept import accept
from datetime import datetime
from project.extensions import bcrypt, db
from project.api.common.utils.exceptions import InvalidPayload, BusinessException, NotFoundException, UnauthorizedException
from project.api.common.utils.decorators import authenticate, privileges
from project.models.user import User, UserRole
from project.models.device import Device
from project.api.common.utils.constants import Constants
from project.api.common.utils.helpers import session_scope
auth_blueprint = Blueprint('auth', __name__)
@auth_blueprint.route('/auth/register', methods=['POST'])
@accept('application/json')
def register_user():
# get post data
post_data = request.get_json()
if not post_data:
raise InvalidPayload()
username = post_data.get('username')
email = post_data.get('email')
password = post_data.get('password')
if not password or not username or not email:
raise InvalidPayload()
# check for existing user
user = User.first(or_(User.username == username, User.email == email))
if not user:
# add new user to db
new_user = User(username=username, email=email, password=password)
with session_scope(db.session) as session:
session.add(new_user)
# need another scope if not new_user does not exists yet
with session_scope(db.session) as session:
token = new_user.encode_email_token()
new_user.email_token_hash = bcrypt.generate_password_hash(token, current_app.config.get('BCRYPT_LOG_ROUNDS')).decode()
if not current_app.testing:
from project.api.common.utils.mails import send_registration_email
send_registration_email(new_user, token)
# save the device
if all(x in request.headers for x in [Constants.HttpHeaders.DEVICE_ID, Constants.HttpHeaders.DEVICE_TYPE]):
device_id = request.headers.get(Constants.HttpHeaders.DEVICE_ID)
device_type = request.headers.get(Constants.HttpHeaders.DEVICE_TYPE)
with session_scope(db.session):
Device.create_or_update(device_id=device_id, device_type=device_type, user=user)
# generate auth token
auth_token = new_user.encode_auth_token()
return {
'status': 'success',
'message': 'Successfully registered.',
'auth_token': auth_token
}, 201
else:
# user already registered, set False to device.active
if Constants.HttpHeaders.DEVICE_ID in request.headers:
device_id = request.headers.get(Constants.HttpHeaders.DEVICE_ID)
device = Device.first_by(device_id=device_id)
if device:
with session_scope(db.session):
device.active = False
raise BusinessException(message='Sorry. That user already exists.')
@auth_blueprint.route('/auth/login', methods=['POST'])
@accept('application/json')
def login_user():
# get post data
post_data = request.get_json()
if not post_data:
raise InvalidPayload()
email = post_data.get('email')
password = post_data.get('password')
if not password:
raise InvalidPayload()
user = User.first_by(email=email)
if user and bcrypt.check_password_hash(user.password, password):
# register device if needed
if all(x in request.headers for x in [Constants.HttpHeaders.DEVICE_ID, Constants.HttpHeaders.DEVICE_TYPE]):
device_id = request.headers.get(Constants.HttpHeaders.DEVICE_ID)
device_type = request.headers.get(Constants.HttpHeaders.DEVICE_TYPE)
with session_scope(db.session):
Device.create_or_update(device_id=device_id, device_type=device_type, user=user)
auth_token = user.encode_auth_token()
return {
'status': 'success',
'message': 'Successfully logged in.',
'auth_token': auth_token
}
else:
# user is not logged in, set False to device.active
if Constants.HttpHeaders.DEVICE_ID in request.headers:
device_id = request.headers.get(Constants.HttpHeaders.DEVICE_ID)
device = Device.first_by(device_id=device_id)
if device:
with session_scope(db.session):
device.active = False
raise NotFoundException(message='User does not exist.')
@auth_blueprint.route('/auth/logout', methods=['GET'])
@accept('application/json')
@authenticate
@privileges(roles=UserRole.USER | UserRole.USER_ADMIN | UserRole.BACKEND_ADMIN)
def logout_user(_):
if Constants.HttpHeaders.DEVICE_ID in request.headers:
device_id = request.headers.get(Constants.HttpHeaders.DEVICE_ID)
device = Device.first_by(device_id=device_id)
if device:
with session_scope(db.session):
device.active = False
return {
'status': 'success',
'message': 'Successfully logged out.'
}
@auth_blueprint.route('/auth/status', methods=['GET'])
@accept('application/json')
@authenticate
def get_user_status(user_id: int):
user = User.get(user_id)
return {
'status': 'success',
'data': {
'id': user.id,
'username': user.username,
'email': user.email,
'active': user.active,
'created_at': user.created_at,
'email_validation_date': user.email_validation_date,
'cellphone_validation_date': user.cellphone_validation_date
}
}
@auth_blueprint.route('/auth/password_recovery', methods=['POST'])
@accept('application/json')
def password_recovery():
''' creates a password_recovery_hash and sends email to user (assumes login=email)'''
post_data = request.get_json()
if not post_data:
raise InvalidPayload()
email = post_data.get('email')
if not email:
raise InvalidPayload()
# fetch the user data
user = User.first_by(email=email)
if user:
token = user.encode_password_token()
with session_scope(db.session):
user.token_hash = bcrypt.generate_password_hash(token, current_app.config.get('BCRYPT_LOG_ROUNDS')).decode()
if not current_app.testing:
from project.api.common.utils.mails import send_password_recovery_email
send_password_recovery_email(user, token.decode()) # send recovery email
return {
'status': 'success',
'message': 'Successfully sent email with password recovery.',
}
else:
raise NotFoundException(message='Login/email does not exist, please write a valid login/email')
@auth_blueprint.route('/auth/password', methods=['PUT'])
@accept('application/json')
def password_reset():
''' reset user password (assumes login=email)'''
post_data = request.get_json()
if not post_data:
raise InvalidPayload()
token = post_data.get('token')
pw_new = post_data.get('password')
if not token or not pw_new:
raise InvalidPayload()
# fetch the user data
user_id = User.decode_password_token(token)
user = User.get(user_id)
if not user or not user.token_hash or not bcrypt.check_password_hash(user.token_hash, token):
raise NotFoundException(message='Invalid reset. Please try again.')
with session_scope(db.session):
user.password = bcrypt.generate_password_hash(pw_new, current_app.config.get('BCRYPT_LOG_ROUNDS')).decode()
user.token_hash = None
return {
'status': 'success',
'message': 'Successfully reset password.',
}
@auth_blueprint.route('/auth/password_change', methods=['PUT'])
@accept('application/json')
@authenticate
def password_change(user_id: int):
''' changes user password when logged in'''
post_data = request.get_json()
if not post_data:
raise InvalidPayload()
pw_old = post_data.get('old_password')
pw_new = post_data.get('new_password')
if not pw_old or not pw_new:
raise InvalidPayload()
# fetch the user data
user = User.get(user_id)
if not bcrypt.check_password_hash(user.password, pw_old):
raise BusinessException(message='Invalid password. Please try again.')
with session_scope(db.session):
user.password = bcrypt.generate_password_hash(pw_new, current_app.config.get('BCRYPT_LOG_ROUNDS')).decode()
return {
'status': 'success',
'message': 'Successfully changed password.',
}
@auth_blueprint.route('/auth/facebook/login', methods=['POST'])
@accept('application/json')
def facebook_login():
''' logs in user using fb_access_token returning the corresponding JWT
if user does not exist registers/creates a new one'''
post_data = request.get_json()
if not post_data:
raise InvalidPayload()
fb_access_token = post_data.get('fb_access_token')
if not fb_access_token:
raise InvalidPayload()
try:
graph = GraphAPI(fb_access_token)
profile = graph.get("me?fields=id,name,email,link")
except Exception:
raise UnauthorizedException()
fb_user = User.first(User.fb_id == profile['id'])
if not fb_user:
# Not an existing user so get info, register and login
user = User.first(User.email == profile['email'])
code = 200
with session_scope(db.session) as session:
if user:
user.fb_access_token = fb_access_token
user.fb_id = profile['id']
else:
# Create the user and insert it into the database
user = User(email=profile['email'],
fb_id=profile['id'],
fb_access_token=fb_access_token)
session.add(user)
code = 201
# generate auth token
auth_token = user.encode_auth_token()
return {
'status': 'success',
'message': 'Successfully facebook registered.',
'auth_token': auth_token.decode()
}, code
else:
auth_token = fb_user.encode_auth_token()
with session_scope(db.session):
fb_user.fb_access_token = fb_access_token
return {
'status': 'success',
'message': 'Successfully facebook login.',
'auth_token': auth_token.decode()
}
@auth_blueprint.route('/auth/facebook/set_standalone_user', methods=['PUT'])
@accept('application/json')
@authenticate
def set_standalone_user(user_id: int):
''' changes user password when logged in'''
post_data = request.get_json()
if not post_data:
raise InvalidPayload()
username = post_data.get('username')
pw_old = post_data.get('old_password')
pw_new = post_data.get('new_password')
if not username or not pw_old or not pw_new:
raise InvalidPayload()
# fetch the user data
user = User.get(user_id)
if not user.fb_id:
raise NotFoundException(message='Must be a facebook user login. Please try again.')
# fetch the user data
user = User.get(user_id)
if not bcrypt.check_password_hash(user.password, pw_old):
raise NotFoundException(message='Invalid password. Please try again.')
if not User.first(User.username == username):
with session_scope(db.session):
user.username = username
user.password = bcrypt.generate_password_hash(pw_new, current_app.config.get('BCRYPT_LOG_ROUNDS')).decode()
return {
'status': 'success',
'message': 'Successfully changed password.',
}
else:
raise BusinessException(message='Sorry. That username already exists, choose another username')