84 lines
2.7 KiB
Python
84 lines
2.7 KiB
Python
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"""API dependencies for authentication, authorization, and tenant resolution."""
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from typing import Annotated
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from uuid import UUID
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from fastapi import Depends, HTTPException, Header, status
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from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials
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from sqlalchemy.orm import Session
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from app.database import get_db
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from app.core.security import decode_token
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from app.models.user import User
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from app.models.tenant import Tenant
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from app.core.permissions import has_permission
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security = HTTPBearer()
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async def get_current_user(
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credentials: Annotated[HTTPAuthorizationCredentials, Depends(security)],
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db: Session = Depends(get_db),
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) -> User:
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"""Validate JWT and return current user."""
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try:
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payload = decode_token(credentials.credentials)
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user_id = UUID(payload["sub"])
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except Exception:
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="Invalid authentication credentials",
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headers={"WWW-Authenticate": "Bearer"},
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)
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user = db.query(User).filter(User.id == user_id).first()
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if not user or user.status != "active":
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raise HTTPException(
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status_code=status.HTTP_401_UNAUTHORIZED,
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detail="User not found or inactive",
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)
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return user
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async def get_current_tenant(
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x_tenant_id: Annotated[UUID, Header(..., alias="X-Tenant-ID")],
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user: User = Depends(get_current_user),
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) -> Tenant:
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"""Validate user has access to the specified tenant."""
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if user.tenant_id != x_tenant_id:
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail="Access denied to this tenant",
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)
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return user.tenant
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class RequirePermission:
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"""Dependency factory for permission checking."""
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def __init__(self, permission: str):
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self.permission = permission
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async def __call__(self, user: User = Depends(get_current_user)) -> User:
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user_perms = set()
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for role in user.roles:
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user_perms.update(role.permissions)
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if not has_permission(user_perms, self.permission):
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raise HTTPException(
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status_code=status.HTTP_403_FORBIDDEN,
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detail=f"Missing permission: {self.permission}",
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)
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return user
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# Common permission dependencies
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RequireAdmin = Depends(RequirePermission("users.update"))
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RequireUserRead = Depends(RequirePermission("users.read"))
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RequireTenantManage = Depends(RequirePermission("tenants.manage"))
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RequireBillingRead = Depends(RequirePermission("billing.read"))
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RequireAuditRead = Depends(RequirePermission("audit.read"))
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RequireReportCreate = Depends(RequirePermission("reports.create"))
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RequireApiKeyCreate = Depends(RequirePermission("api_keys.create"))
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