235 lines
9.1 KiB
Python
235 lines
9.1 KiB
Python
import time
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from secrets import token_urlsafe
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import orjson
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from authlib.integrations.starlette_client import OAuth
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from authlib.oauth2.rfc7636 import create_s256_code_challenge
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from starlette.responses import JSONResponse, RedirectResponse
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from auth.orm import Author
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from auth.tokenstorage import TokenStorage
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from resolvers.auth import generate_unique_slug
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from services.db import local_session
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from services.redis import redis
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from settings import FRONTEND_URL, OAUTH_CLIENTS
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from utils.logger import root_logger as logger
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oauth = OAuth()
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# OAuth state management через Redis (TTL 10 минут)
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OAUTH_STATE_TTL = 600 # 10 минут
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# Конфигурация провайдеров
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PROVIDERS = {
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"google": {
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"name": "google",
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"server_metadata_url": "https://accounts.google.com/.well-known/openid-configuration",
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"client_kwargs": {"scope": "openid email profile", "prompt": "select_account"},
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},
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"github": {
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"name": "github",
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"access_token_url": "https://github.com/login/oauth/access_token",
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"authorize_url": "https://github.com/login/oauth/authorize",
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"api_base_url": "https://api.github.com/",
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"client_kwargs": {"scope": "user:email"},
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},
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"facebook": {
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"name": "facebook",
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"access_token_url": "https://graph.facebook.com/v13.0/oauth/access_token",
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"authorize_url": "https://www.facebook.com/v13.0/dialog/oauth",
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"api_base_url": "https://graph.facebook.com/",
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"client_kwargs": {"scope": "public_profile email"},
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},
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}
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# Регистрация провайдеров
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for provider, config in PROVIDERS.items():
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if provider in OAUTH_CLIENTS:
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oauth.register(
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name=config["name"],
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client_id=OAUTH_CLIENTS[provider.upper()]["id"],
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client_secret=OAUTH_CLIENTS[provider.upper()]["key"],
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**config,
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)
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async def get_user_profile(provider: str, client, token) -> dict:
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"""Получает профиль пользователя от провайдера OAuth"""
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if provider == "google":
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userinfo = token.get("userinfo", {})
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return {
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"id": userinfo.get("sub"),
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"email": userinfo.get("email"),
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"name": userinfo.get("name"),
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"picture": userinfo.get("picture", "").replace("=s96", "=s600"),
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}
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elif provider == "github":
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profile = await client.get("user", token=token)
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profile_data = profile.json()
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emails = await client.get("user/emails", token=token)
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emails_data = emails.json()
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primary_email = next((email["email"] for email in emails_data if email["primary"]), None)
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return {
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"id": str(profile_data["id"]),
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"email": primary_email or profile_data.get("email"),
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"name": profile_data.get("name") or profile_data.get("login"),
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"picture": profile_data.get("avatar_url"),
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}
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elif provider == "facebook":
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profile = await client.get("me?fields=id,name,email,picture.width(600)", token=token)
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profile_data = profile.json()
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return {
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"id": profile_data["id"],
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"email": profile_data.get("email"),
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"name": profile_data.get("name"),
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"picture": profile_data.get("picture", {}).get("data", {}).get("url"),
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}
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return {}
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async def oauth_login(request):
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"""Начинает процесс OAuth авторизации"""
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provider = request.path_params["provider"]
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if provider not in PROVIDERS:
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return JSONResponse({"error": "Invalid provider"}, status_code=400)
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client = oauth.create_client(provider)
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if not client:
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return JSONResponse({"error": "Provider not configured"}, status_code=400)
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# Получаем параметры из query string
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state = request.query_params.get("state")
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redirect_uri = request.query_params.get("redirect_uri", FRONTEND_URL)
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if not state:
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return JSONResponse({"error": "State parameter is required"}, status_code=400)
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# Генерируем PKCE challenge
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code_verifier = token_urlsafe(32)
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code_challenge = create_s256_code_challenge(code_verifier)
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# Сохраняем состояние OAuth в Redis
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oauth_data = {
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"code_verifier": code_verifier,
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"provider": provider,
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"redirect_uri": redirect_uri,
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"created_at": int(time.time()),
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}
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await store_oauth_state(state, oauth_data)
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# Используем URL из фронтенда для callback
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oauth_callback_uri = f"{request.base_url}oauth/{provider}/callback"
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try:
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return await client.authorize_redirect(
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request,
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oauth_callback_uri,
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code_challenge=code_challenge,
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code_challenge_method="S256",
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state=state,
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)
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except Exception as e:
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logger.error(f"OAuth redirect error for {provider}: {str(e)}")
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return JSONResponse({"error": str(e)}, status_code=500)
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async def oauth_callback(request):
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"""Обрабатывает callback от OAuth провайдера"""
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try:
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# Получаем state из query параметров
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state = request.query_params.get("state")
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if not state:
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return JSONResponse({"error": "State parameter missing"}, status_code=400)
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# Получаем сохраненные данные OAuth из Redis
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oauth_data = await get_oauth_state(state)
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if not oauth_data:
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return JSONResponse({"error": "Invalid or expired OAuth state"}, status_code=400)
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provider = oauth_data.get("provider")
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code_verifier = oauth_data.get("code_verifier")
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stored_redirect_uri = oauth_data.get("redirect_uri", FRONTEND_URL)
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if not provider:
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return JSONResponse({"error": "No active OAuth session"}, status_code=400)
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client = oauth.create_client(provider)
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if not client:
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return JSONResponse({"error": "Provider not configured"}, status_code=400)
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# Получаем токен с PKCE verifier
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token = await client.authorize_access_token(request, code_verifier=code_verifier)
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# Получаем профиль пользователя
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profile = await get_user_profile(provider, client, token)
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if not profile.get("email"):
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return JSONResponse({"error": "Email not provided"}, status_code=400)
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# Создаем или обновляем пользователя
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with local_session() as session:
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author = session.query(Author).filter(Author.email == profile["email"]).first()
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if not author:
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# Генерируем slug из имени или email
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slug = generate_unique_slug(profile["name"] or profile["email"].split("@")[0])
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author = Author(
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email=profile["email"],
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name=profile["name"],
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slug=slug,
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pic=profile.get("picture"),
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oauth=f"{provider}:{profile['id']}",
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email_verified=True,
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created_at=int(time.time()),
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updated_at=int(time.time()),
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last_seen=int(time.time()),
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)
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session.add(author)
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else:
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author.name = profile["name"]
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author.pic = profile.get("picture") or author.pic
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author.oauth = f"{provider}:{profile['id']}"
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author.email_verified = True
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author.updated_at = int(time.time())
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author.last_seen = int(time.time())
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session.commit()
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# Создаем сессию
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session_token = await TokenStorage.create_session(author)
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# Формируем URL для редиректа с токеном
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redirect_url = f"{stored_redirect_uri}?state={state}&access_token={session_token}"
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response = RedirectResponse(url=redirect_url)
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response.set_cookie(
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"session_token",
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session_token,
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httponly=True,
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secure=True,
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samesite="lax",
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max_age=30 * 24 * 60 * 60, # 30 days
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)
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return response
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except Exception as e:
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logger.error(f"OAuth callback error: {str(e)}")
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# В случае ошибки редиректим на фронтенд с ошибкой
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fallback_redirect = request.query_params.get("redirect_uri", FRONTEND_URL)
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return RedirectResponse(url=f"{fallback_redirect}?error=oauth_failed&message={str(e)}")
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async def store_oauth_state(state: str, data: dict) -> None:
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"""Сохраняет OAuth состояние в Redis с TTL"""
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key = f"oauth_state:{state}"
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await redis.execute("SETEX", key, OAUTH_STATE_TTL, orjson.dumps(data))
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async def get_oauth_state(state: str) -> dict:
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"""Получает и удаляет OAuth состояние из Redis (one-time use)"""
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key = f"oauth_state:{state}"
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data = await redis.execute("GET", key)
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if data:
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await redis.execute("DEL", key) # Одноразовое использование
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return orjson.loads(data)
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return None
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