83 lines
2.6 KiB
Python
83 lines
2.6 KiB
Python
"""
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安全模块
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包含 JWT 令牌生成、验证和密码哈希功能
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"""
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from datetime import datetime, timedelta
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from typing import Optional
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from jose import JWTError, jwt
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from passlib.context import CryptContext
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from fastapi import Depends, HTTPException, status
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from fastapi.security import OAuth2PasswordBearer
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from app.core.config import settings
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# 密码上下文（使用 bcrypt）
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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# OAuth2 方案
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oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/v1/auth/login")
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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"""验证密码"""
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return pwd_context.verify(plain_password, hashed_password)
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def get_password_hash(password: str) -> str:
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"""哈希密码"""
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return pwd_context.hash(password)
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def create_access_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
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"""创建访问令牌"""
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.utcnow() + expires_delta
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else:
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expire = datetime.utcnow() + timedelta(minutes=settings.ACCESS_TOKEN_EXPIRE_MINUTES)
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to_encode.update({"exp": expire, "type": "access"})
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encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
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return encoded_jwt
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def create_refresh_token(data: dict, expires_delta: Optional[timedelta] = None) -> str:
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"""创建刷新令牌"""
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to_encode = data.copy()
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if expires_delta:
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expire = datetime.utcnow() + expires_delta
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else:
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expire = datetime.utcnow() + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
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to_encode.update({"exp": expire, "type": "refresh"})
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encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=settings.ALGORITHM)
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return encoded_jwt
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def decode_token(token: str) -> dict:
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"""解码令牌"""
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try:
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payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[settings.ALGORITHM])
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return payload
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except JWTError:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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async def get_current_user_id(token: str = Depends(oauth2_scheme)) -> str:
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"""从令牌中获取当前用户 ID"""
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payload = decode_token(token)
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user_id: str = payload.get("sub")
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if user_id is None:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Could not validate credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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return user_id
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