neuron-tai/.scratch/alpha-hardening/issues/02-a2-unified-auth-boundary_completed.md

Status: done

02 — A2: Unified auth boundary for privileged and financial reads

What to build

Replace header-presence stubs with a single auth middleware that resolves API keys, admin sessions, validator service tokens, and hive peer identity. Close leaks on financial and operator endpoints. This is the auth foundation issue; issue 01 should only apply hive auth to gossip endpoints once the helper exists.

Code refs:

• packages/tracker/meshnet_tracker/server.py — _handle_billing_forfeit (~2429–2464) — H3: non-empty Authorization only
• packages/tracker/meshnet_tracker/server.py — _handle_benchmark_hop_penalty (~2650–2658), _handle_benchmark_results (~2745–2748) — H3
• packages/tracker/meshnet_tracker/server.py — _handle_billing_summary (~2366–2371) — H4
• packages/tracker/meshnet_tracker/server.py — _handle_billing_settlements (~2407–2412) — H4
• packages/tracker/meshnet_tracker/server.py — _handle_registry_wallets (~2391–2405) — H4
• packages/tracker/meshnet_tracker/server.py — _session_account (~2468+), _handle_admin_accounts (~2588–2608) — H4
• packages/tracker/meshnet_tracker/accounts.py — session_account(), create_session() only (session store; not handler wiring)

Per ADR-0017 §4: forfeit → validator or admin; benchmark → admin; billing summary/settlements/registry wallets → admin session. Include the validator service token shape from 20-validator-service-token_completed.md in the same implementation if practical.

Test-first

1. Red: POST /v1/billing/forfeit with Authorization: Bearer garbage succeeds today — must require validator/admin identity.
2. Red: GET /v1/billing/summary without admin session returns 401/403.
3. Green: middleware + role checks; existing inference API-key path unchanged.

Acceptance criteria

• Single _require_auth(role=...) (or equivalent) used by all privileged handlers
• Shared auth config supports admin sessions, validator service token, and hive peer HMAC/mTLS
• Forfeit accepts only validator service token or admin session — not arbitrary Bearer strings
• Financial read endpoints require admin session (alpha posture)
• Benchmark write/read require admin or service token
• Integration tests for each endpoint class (reject unauth, accept valid)

ADR links

• ADR-0017

Related

• 20-validator-service-token_completed.md — checklist for validator service token format, rotation, forfeit auth

Blocked by

None. This issue should land before 01-c1-gossip-auth_completed.md.