tfm_ainventory/dev_docs/SESSION_STATE.md

# CURRENT AI WORKING SESSION — COMPLETED

**Active AI:** Claude (Sonnet 4.6)
**Last Updated:** 2026-04-11
**Current Version:** v1.3.5
**Branch:** dev

---

## 🎯 SESSION COMPLETED — ALL TASKS FINALIZED

### Final Status

✅ **Security Audit** — complete (12 vulnerabilities, 6 direct patches)
✅ **[C-01] JWT Bearer Auth** — complete (backend + frontend)
✅ **[H-02] Rate Limiting** — complete (10 req/min on /items/extract-label)
✅ **[M-01] CORS Configuration** — complete (ALLOWED_ORIGINS from env)
✅ **[L-01] Token Expiry** — complete (8h JWT expiration)

### Session Commits

| Hash | Description |
|------|-------------|
| `247ea454` | security: audit + 6 patches (C-02, C-03, H-01, H-03, M-01, M-03) |
| `9b6adad6` | feat: JWT Bearer auth on all routers |
| `e9ada004` | docs: update SESSION_STATE JWT complete |
| `e6ca33f2` | feat: frontend JWT, rate limiting, CORS |
| `2574726f` | docs: final SESSION_STATE all tasks complete |

---

## 📋 Complete Implementations

### Backend

#### JWT Authentication [C-01]
- ✅ `backend/auth.py` — JWT creation, validation, role checking
- ✅ `/users/login` — returns `TokenResponse` (access_token, user_id, role, 8h expiry)
- ✅ All routers — `Depends(get_current_user)` enforcement
- ✅ Admin-only endpoints — `Depends(get_current_admin)`
- ✅ user_id — extracted from JWT token, NOT from request body [M-02]

#### Rate Limiting [H-02]
- ✅ `slowapi` integrated in requirements.txt
- ✅ `/items/extract-label` — `@limiter.limit("10/minute")` per IP
- ✅ Protection against spam on AI endpoint

#### CORS Configuration [M-01]
- ✅ `ALLOWED_ORIGINS` from environment variable (fallback: localhost:3000, localhost:3002)
- ✅ Specific HTTP methods: GET, POST, PUT, DELETE, OPTIONS
- ✅ allow_credentials=True (valid with specific origins)

#### Direct Patches
- ✅ C-02 — Removed passwordless bypass
- ✅ C-03 — Admin seed with random password
- ✅ H-01 — LDAP injection fix (escape_filter_chars)
- ✅ H-03 — MIME validation + 10MB upload limit
- ✅ M-03 — LDAP logging via log.debug()

### Frontend

#### JWT Handling [L-01]
- ✅ `frontend/lib/auth.ts` — saveToken, getToken, getAuthHeader, clearAuth
- ✅ Token storage — localStorage (inventory_token + inventory_user)
- ✅ Login page — saves TokenResponse from /users/login
- ✅ Token attachment — Axios interceptor adds `Authorization: Bearer <token>` to all requests

#### Token Expiry [L-01]
- ✅ 401 Unauthorized → clearAuth() + redirect /login
- ✅ Interceptor on axiosInstance
- ✅ Auto-logout on expiration

### Deployment

#### docker-compose.yml
- ✅ Backend environment variables: DATA_DIR, LOGS_DIR, ALLOWED_ORIGINS, JWT_SECRET_KEY
- ✅ Comments for production configuration
- ✅ Fallback values for development

#### Environment Variables

| Variable | Dev Default | Production Required | Purpose |
|----------|-------------|-------------------|---------|
| ALLOWED_ORIGINS | localhost:3000, localhost:3002 | SET REQUIRED | CORS allowed origins |
| JWT_SECRET_KEY | ephemeral (random) | SET REQUIRED | JWT signing key |
| DATA_DIR | /app/data | - | SQLite database location |
| LOGS_DIR | /app/logs | - | Application logs location |

---

## 📊 Vulnerability Status

| ID | Severity | Description | Status |
|----|----------|-------------|--------|
| C-01 | 🔴 CRITICAL | Zero authentication on API | ✅ PATCHED (JWT) |
| C-02 | 🔴 CRITICAL | Passwordless user bypass | ✅ PATCHED |
| C-03 | 🔴 CRITICAL | Default "admin" password | ✅ PATCHED |
| C-04 | 🔴 CRITICAL | Gemini API key exposed | ✅ SAFE (never in git) |
| H-01 | 🟠 HIGH | LDAP injection | ✅ PATCHED |
| H-02 | 🟠 HIGH | Missing rate limit | ✅ PATCHED |
| H-03 | 🟠 HIGH | File upload validation | ✅ PATCHED |
| H-04 | 🟠 HIGH | Admin endpoints exposed | ✅ PATCHED (JWT) |
| M-01 | 🟡 MEDIUM | CORS wildcard | ✅ PATCHED |
| M-02 | 🟡 MEDIUM | user_id from body | ✅ PATCHED |
| M-03 | 🟡 MEDIUM | Debug LDAP logging | ✅ PATCHED |
| L-01 | 🔵 LOW | Token expiry | ✅ PATCHED |

---

## 🚀 Production Deployment Checklist

**CRITICAL — Set these environment variables before deploy:**

- [ ] **JWT_SECRET_KEY** — Generate with `openssl rand -hex 32` (store in secrets manager)
- [ ] **ALLOWED_ORIGINS** — Set to actual production domain(s), e.g., `https://inventory.example.com`
- [ ] **TLS/HTTPS** — Caddy proxy configured with valid SSL certificate
- [ ] **Database backup** — SQLite data/ mapped to persistent volume
- [ ] **Logs rotation** — logs/ mapped and monitored

**RECOMMENDED:**

- [ ] Set log level to WARNING (not DEBUG)
- [ ] Configure rate limiting at reverse proxy level (nginx/Cloudflare) for DDoS protection
- [ ] Monitor alert on 401 spikes (token expiry issues)
- [ ] Periodic JWT_SECRET_KEY rotation (quarterly minimum)

---

## 🧪 Local Testing

### 1. Start Development Stack
```bash
docker-compose up --build
```

### 2. Test Login
```bash
curl -X POST http://localhost:8000/users/login \
  -H "Content-Type: application/json" \
  -d '{"username": "Admin", "password": "<initial_password_from_logs>"}'
```

### 3. Test Protected Endpoint with Token
```bash
curl -H "Authorization: Bearer <access_token>" \
  http://localhost:8000/items/
```

### 4. Test 401 Unauthorized (invalid token)
```bash
curl -H "Authorization: Bearer invalid_token" \
  http://localhost:8000/items/
# Expected: 401 Unauthorized
```

### 5. Test Rate Limiting (extract-label endpoint)
```bash
# 11 requests rapid fire — 11th should fail with 429
for i in {1..15}; do
  curl -X POST -F "file=@image.jpg" \
    -H "Authorization: Bearer <token>" \
    http://localhost:8000/items/extract-label
  sleep 0.1
done
```

---

## ✅ Validations Completed

- ✅ Backend fully secured with JWT
- ✅ Frontend token handling complete
- ✅ Rate limiting on AI endpoint
- ✅ CORS configurable via environment
- ✅ All routers have authentication enforcement
- ✅ Token expiry with automatic login redirect
- ✅ Admin role checks functional
- ✅ LDAP injection protection
- ✅ File upload validation
- ✅ Audit logging with user_id from token

---

## 🎓 Key Learnings

1. **CORS with credentials=True** — requires specific origins, NOT wildcards
2. **Rate limiting** — essential on expensive endpoints (AI processing)
3. **JWT expiration** — 8h balances security vs. UX
4. **user_id from token** — eliminates operation spoofing
5. **Debug logging** — careful with PII leaks (LDAP DNs)

---

## 📝 Production Environment Variables Example

```bash
# Set these before `docker-compose up`
export JWT_SECRET_KEY="$(openssl rand -hex 32)"
export ALLOWED_ORIGINS="https://inventory.example.com,https://api.example.com"

docker-compose up -d
```

Or in `.env.production` (NOT in git):
```
JWT_SECRET_KEY=abcdef1234567890...
ALLOWED_ORIGINS=https://inventory.example.com
```

---

**Status:** 🚀 PRODUCTION-READY (with environment configuration required)

**Future Scope (OUT OF SCOPE):**
- Email verification for new users
- 2FA/TOTP support
- OAuth2 federation (GitHub/Google/Azure)
- API key management for service accounts
- Audit log export/archival to cold storage