Files
ThreatHunt/backend/app/core/deps.py
2025-12-09 14:29:06 +00:00

109 lines
2.8 KiB
Python

from typing import List, Optional
from fastapi import Depends, HTTPException, status
from fastapi.security import OAuth2PasswordBearer
from sqlalchemy.orm import Session
from app.core.database import get_db
from app.core.security import verify_token
from app.models.user import User
# OAuth2 scheme for token extraction
oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/api/auth/login")
async def get_current_user(
token: str = Depends(oauth2_scheme),
db: Session = Depends(get_db)
) -> User:
"""
Extract and validate JWT from Authorization header
Args:
token: JWT token from Authorization header
db: Database session
Returns:
Current user object
Raises:
HTTPException: If token is invalid or user not found
"""
credentials_exception = HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Could not validate credentials",
headers={"WWW-Authenticate": "Bearer"},
)
# Verify and decode token
payload = verify_token(token)
if payload is None:
raise credentials_exception
user_id: Optional[int] = payload.get("sub")
if user_id is None:
raise credentials_exception
# Get user from database
user = db.query(User).filter(User.id == user_id).first()
if user is None:
raise credentials_exception
return user
async def get_current_active_user(
current_user: User = Depends(get_current_user)
) -> User:
"""
Ensure user is active
Args:
current_user: Current user from get_current_user
Returns:
Active user object
Raises:
HTTPException: If user is inactive
"""
if not current_user.is_active:
raise HTTPException(
status_code=status.HTTP_400_BAD_REQUEST,
detail="Inactive user"
)
return current_user
def require_role(allowed_roles: List[str]):
"""
Role-based access control dependency factory
Args:
allowed_roles: List of roles that are allowed to access the endpoint
Returns:
Dependency function that checks user role
"""
async def role_checker(current_user: User = Depends(get_current_active_user)) -> User:
if current_user.role not in allowed_roles:
raise HTTPException(
status_code=status.HTTP_403_FORBIDDEN,
detail="Insufficient permissions"
)
return current_user
return role_checker
async def get_tenant_id(current_user: User = Depends(get_current_active_user)) -> int:
"""
Extract tenant_id from current user for scoping queries
Args:
current_user: Current active user
Returns:
Tenant ID
"""
return current_user.tenant_id