61 lines
1.9 KiB
Python
61 lines
1.9 KiB
Python
from datetime import datetime, timedelta, timezone
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from fastapi import Depends, HTTPException, status
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from fastapi.security import HTTPAuthorizationCredentials, HTTPBearer
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from jose import JWTError, jwt
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from app.config import settings
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from app.models.user import User
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security = HTTPBearer()
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def create_access_token(user_id: str) -> str:
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expire = datetime.now(timezone.utc) + timedelta(minutes=settings.jwt_expire_minutes)
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to_encode = {"sub": user_id, "exp": expire}
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return jwt.encode(to_encode, settings.jwt_secret_key, algorithm=settings.jwt_algorithm)
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async def get_current_user(
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credentials: HTTPAuthorizationCredentials = Depends(security),
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) -> User:
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token = credentials.credentials
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try:
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# 不验证签名（由小程序侧保证），仅解码 payload 获取用户信息
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payload = jwt.decode(
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token,
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None,
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options={"verify_signature": False, "verify_exp": False},
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)
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openid = payload.get("openid")
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if not openid:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED, detail="无效的认证信息"
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)
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# 手动验证过期
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exp = payload.get("exp")
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if exp and datetime.now(timezone.utc).timestamp() > exp:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED, detail="Token已过期"
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)
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except JWTError:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED, detail="Token无效"
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)
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# 按 openid 查找或创建用户
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user = await User.find_one(User.openid == openid)
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if not user:
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phone = payload.get("phone", "")
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user = User(openid=openid, phone=phone or None)
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await user.insert()
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else:
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phone = payload.get("phone", "")
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if phone and phone != (user.phone or ""):
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user.phone = phone
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await user.save()
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return user
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