mirror of
https://github.com/fastapi-users/fastapi-users.git
synced 2025-08-14 18:58:10 +08:00
872b85de03
* Replace unused `for` index with underscore * Use `items()` to directly unpack dictionary values * Merge duplicate blocks in conditional * Use `any()` instead of for loop * Format __init__.py
117 lines
3.9 KiB
Python
117 lines
3.9 KiB
Python
from typing import Dict, List
|
|
|
|
import jwt
|
|
from fastapi import APIRouter, Depends, HTTPException, Query, Request, Response, status
|
|
from httpx_oauth.integrations.fastapi import OAuth2AuthorizeCallback
|
|
from httpx_oauth.oauth2 import BaseOAuth2
|
|
|
|
from fastapi_users import models
|
|
from fastapi_users.authentication import Authenticator
|
|
from fastapi_users.jwt import SecretType, decode_jwt, generate_jwt
|
|
from fastapi_users.manager import BaseUserManager, UserManagerDependency
|
|
from fastapi_users.router.common import ErrorCode
|
|
|
|
STATE_TOKEN_AUDIENCE = "fastapi-users:oauth-state"
|
|
|
|
|
|
def generate_state_token(
|
|
data: Dict[str, str], secret: SecretType, lifetime_seconds: int = 3600
|
|
) -> str:
|
|
data["aud"] = STATE_TOKEN_AUDIENCE
|
|
return generate_jwt(data, secret, lifetime_seconds)
|
|
|
|
|
|
def get_oauth_router(
|
|
oauth_client: BaseOAuth2,
|
|
get_user_manager: UserManagerDependency[models.UC, models.UD],
|
|
authenticator: Authenticator,
|
|
state_secret: SecretType,
|
|
redirect_url: str = None,
|
|
) -> APIRouter:
|
|
"""Generate a router with the OAuth routes."""
|
|
router = APIRouter()
|
|
callback_route_name = f"{oauth_client.name}-callback"
|
|
|
|
if redirect_url is not None:
|
|
oauth2_authorize_callback = OAuth2AuthorizeCallback(
|
|
oauth_client,
|
|
redirect_url=redirect_url,
|
|
)
|
|
else:
|
|
oauth2_authorize_callback = OAuth2AuthorizeCallback(
|
|
oauth_client,
|
|
route_name=callback_route_name,
|
|
)
|
|
|
|
@router.get("/authorize")
|
|
async def authorize(
|
|
request: Request,
|
|
authentication_backend: str,
|
|
scopes: List[str] = Query(None),
|
|
):
|
|
# Check that authentication_backend exists
|
|
backend_exists = any(
|
|
backend.name == authentication_backend for backend in authenticator.backends
|
|
)
|
|
|
|
if not backend_exists:
|
|
raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST)
|
|
|
|
if redirect_url is not None:
|
|
authorize_redirect_url = redirect_url
|
|
else:
|
|
authorize_redirect_url = request.url_for(callback_route_name)
|
|
|
|
state_data = {
|
|
"authentication_backend": authentication_backend,
|
|
}
|
|
state = generate_state_token(state_data, state_secret)
|
|
authorization_url = await oauth_client.get_authorization_url(
|
|
authorize_redirect_url,
|
|
state,
|
|
scopes,
|
|
)
|
|
|
|
return {"authorization_url": authorization_url}
|
|
|
|
@router.get("/callback", name=f"{oauth_client.name}-callback")
|
|
async def callback(
|
|
request: Request,
|
|
response: Response,
|
|
access_token_state=Depends(oauth2_authorize_callback),
|
|
user_manager: BaseUserManager[models.UC, models.UD] = Depends(get_user_manager),
|
|
):
|
|
token, state = access_token_state
|
|
account_id, account_email = await oauth_client.get_id_email(
|
|
token["access_token"]
|
|
)
|
|
|
|
try:
|
|
state_data = decode_jwt(state, state_secret, [STATE_TOKEN_AUDIENCE])
|
|
except jwt.DecodeError:
|
|
raise HTTPException(status_code=status.HTTP_400_BAD_REQUEST)
|
|
|
|
new_oauth_account = models.BaseOAuthAccount(
|
|
oauth_name=oauth_client.name,
|
|
access_token=token["access_token"],
|
|
expires_at=token.get("expires_at"),
|
|
refresh_token=token.get("refresh_token"),
|
|
account_id=account_id,
|
|
account_email=account_email,
|
|
)
|
|
|
|
user = await user_manager.oauth_callback(new_oauth_account, request)
|
|
|
|
if not user.is_active:
|
|
raise HTTPException(
|
|
status_code=status.HTTP_400_BAD_REQUEST,
|
|
detail=ErrorCode.LOGIN_BAD_CREDENTIALS,
|
|
)
|
|
|
|
# Authenticate
|
|
for backend in authenticator.backends:
|
|
if backend.name == state_data["authentication_backend"]:
|
|
return await backend.get_login_response(user, response, user_manager)
|
|
|
|
return router
|