132 lines
4.0 KiB
Python
132 lines
4.0 KiB
Python
"""
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Authentication dependency for auth service
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services/auth/app/core/auth.py
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"""
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from fastapi import Depends, HTTPException, status
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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from sqlalchemy.ext.asyncio import AsyncSession
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from sqlalchemy import select
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from jose import JWTError, jwt
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import structlog
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from app.core.config import settings
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from app.core.database import get_db
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from app.models.users import User
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logger = structlog.get_logger()
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security = HTTPBearer()
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async def get_current_user(
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credentials: HTTPAuthorizationCredentials = Depends(security),
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db: AsyncSession = Depends(get_db)
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) -> User:
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"""
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Dependency to get the current authenticated user
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"""
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credentials_exception = 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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try:
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# Decode JWT token
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payload = jwt.decode(
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credentials.credentials,
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settings.JWT_SECRET_KEY,
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algorithms=[settings.JWT_ALGORITHM]
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)
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# Get user identifier from token
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user_id: str = payload.get("sub")
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if user_id is None:
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logger.warning("Token payload missing 'sub' field")
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raise credentials_exception
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logger.info(f"Authenticating user: {user_id}")
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except JWTError as e:
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logger.warning(f"JWT decode error: {e}")
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raise credentials_exception
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try:
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# Get user from database
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result = await db.execute(
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select(User).where(User.id == user_id)
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)
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user = result.scalar_one_or_none()
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if user is None:
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logger.warning(f"User not found for ID: {user_id}")
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raise credentials_exception
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if not user.is_active:
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logger.warning(f"Inactive user attempted access: {user_id}")
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Inactive user"
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)
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logger.info(f"User authenticated: {user.email}")
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return user
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except Exception as e:
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logger.error(f"Error getting user: {e}")
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raise credentials_exception
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async def get_current_active_user(
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current_user: User = Depends(get_current_user)
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) -> User:
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"""
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Dependency to get the current active user
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"""
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if not current_user.is_active:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Inactive user"
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)
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return current_user
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def verify_password(plain_password: str, hashed_password: str) -> bool:
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"""Verify a password against its hash"""
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from passlib.context import CryptContext
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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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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"""Generate password hash"""
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from passlib.context import CryptContext
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pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
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return pwd_context.hash(password)
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def create_access_token(data: dict, expires_delta=None):
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"""Create JWT access token"""
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from datetime import datetime, timedelta
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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})
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encoded_jwt = jwt.encode(to_encode, settings.JWT_SECRET_KEY, algorithm=settings.JWT_ALGORITHM)
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return encoded_jwt
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def create_refresh_token(data: dict):
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"""Create JWT refresh token"""
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from datetime import datetime, timedelta
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to_encode = data.copy()
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expire = datetime.utcnow() + timedelta(days=settings.REFRESH_TOKEN_EXPIRE_DAYS)
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to_encode.update({"exp": expire})
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encoded_jwt = jwt.encode(to_encode, settings.JWT_SECRET_KEY, algorithm=settings.JWT_ALGORITHM)
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return encoded_jwt |