1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
"""
FastAPI shared dependencies — injected via Depends().
JWT scope enforcement:
- "user" scope (browser login): full access to all endpoints
- "node" scope (Ed25519 daemon auth): read-only group access + node operations
Node-scoped tokens CANNOT create/delete groups or manage membership.
"""
from fastapi import Depends, Header, HTTPException, status
from sqlalchemy.ext.asyncio import AsyncSession
from sqlalchemy import select
from meshbay_hub.auth import decode_access_token
from meshbay_hub.db.engine import get_db
from meshbay_hub.db.models import User
_admin_usernames: set[str] = set()
def set_admin_usernames(usernames: list[str]) -> None:
global _admin_usernames
_admin_usernames = set(usernames)
async def _decode_token(authorization: str = Header(...)) -> dict:
"""Decode and verify JWT bearer token. Returns full payload."""
try:
scheme, token = authorization.split(None, 1)
if scheme.lower() != "bearer":
raise ValueError
return decode_access_token(token)
except Exception:
raise HTTPException(
status_code=status.HTTP_401_UNAUTHORIZED,
detail="Invalid or expired token",
headers={"WWW-Authenticate": "Bearer"},
)
async def get_current_user(
payload: dict = Depends(_decode_token),
db: AsyncSession = Depends(get_db),
) -> User:
"""
Verify the JWT bearer token and return the User from the database.
Accepts both user-scoped and node-scoped tokens.
"""
result = await db.execute(
select(User).where(User.id == payload["sub"]))
user = result.scalar_one_or_none()
if user is None:
raise HTTPException(status_code=status.HTTP_401_UNAUTHORIZED,
detail="User not found")
if user.status != "active":
raise HTTPException(status_code=status.HTTP_403_FORBIDDEN,
detail=f"Account {user.status}")
return user
async def require_user_scope(
payload: dict = Depends(_decode_token),
current_user: User = Depends(get_current_user),
) -> User:
"""Reject node-scoped tokens — only browser (user-scope) can mutate groups."""
if payload.get("scope") == "node":
raise HTTPException(
status_code=status.HTTP_403_FORBIDDEN,
detail="Node-scoped token cannot perform this operation — use browser",
)
return current_user
async def require_moderator(
current_user: User = Depends(get_current_user),
) -> User:
if current_user.role not in ("moderator", "admin") \
and current_user.username not in _admin_usernames:
raise HTTPException(status_code=status.HTTP_403_FORBIDDEN,
detail="Moderator access required")
return current_user
async def require_admin(
current_user: User = Depends(get_current_user),
) -> User:
if current_user.role != "admin" \
and current_user.username not in _admin_usernames:
raise HTTPException(status_code=status.HTTP_403_FORBIDDEN,
detail="Admin access required")
return current_user
|