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feat(auth): authentication module with multi-tenant isolation (RFC-001)
Introduce an always-on auth layer with auto-created admin on first boot, multi-tenant isolation for threads/stores, and a full setup/login flow. Backend - JWT access tokens with `ver` field for stale-token rejection; bump on password/email change - Password hashing, HttpOnly+Secure cookies (Secure derived from request scheme at runtime) - CSRF middleware covering both REST and LangGraph routes - IP-based login rate limiting (5 attempts / 5-min lockout) with bounded dict growth and X-Forwarded-For bypass fix - Multi-worker-safe admin auto-creation (single DB write, WAL once) - needs_setup + token_version on User model; SQLite schema migration - Thread/store isolation by owner; orphan thread migration on first admin registration - thread_id validated as UUID to prevent log injection - CLI tool to reset admin password - Decorator-based authz module extracted from auth core Frontend - Login and setup pages with SSR guard for needs_setup flow - Account settings page (change password / email) - AuthProvider + route guards; skips redirect when no users registered - i18n (en-US / zh-CN) for auth surfaces - Typed auth API client; parseAuthError unwraps FastAPI detail envelope Infra & tooling - Unified `serve.sh` with gateway mode + auto dep install - Public PyPI uv.toml pin for CI compatibility - Regenerated uv.lock with public index Tests - HTTP vs HTTPS cookie security tests - Auth middleware, rate limiter, CSRF, setup flow coverage
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greatmengqi
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# Authentication Upgrade Guide
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DeerFlow 内置了认证模块。本文档面向从无认证版本升级的用户。
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## 核心概念
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认证模块采用**始终强制**策略：
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- 首次启动时自动创建 admin 账号，随机密码打印到控制台日志
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- 认证从一开始就是强制的，无竞争窗口
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- 历史对话（升级前创建的 thread）自动迁移到 admin 名下
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## 升级步骤
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### 1. 更新代码
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```bash
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git pull origin main
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cd backend && make install
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```
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### 2. 首次启动
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```bash
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make dev
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```
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控制台会输出：
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```
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============================================================
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Admin account created on first boot
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Email: admin@deerflow.dev
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Password: aB3xK9mN_pQ7rT2w
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Change it after login: Settings → Account
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============================================================
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```
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如果未登录就重启了服务，不用担心——只要 setup 未完成，每次启动都会重置密码并重新打印到控制台。
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### 3. 登录
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访问 `http://localhost:2026/login`，使用控制台输出的邮箱和密码登录。
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### 4. 修改密码
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登录后进入 Settings → Account → Change Password。
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### 5. 添加用户（可选）
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其他用户通过 `/login` 页面注册，自动获得 **user** 角色。每个用户只能看到自己的对话。
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## 安全机制
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| 机制 | 说明 |
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|------|------|
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| JWT HttpOnly Cookie | Token 不暴露给 JavaScript，防止 XSS 窃取 |
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| CSRF Double Submit Cookie | 所有 POST/PUT/DELETE 请求需携带 `X-CSRF-Token` |
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| bcrypt 密码哈希 | 密码不以明文存储 |
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| 多租户隔离 | 用户只能访问自己的 thread |
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| HTTPS 自适应 | 检测 `x-forwarded-proto`，自动设置 `Secure` cookie 标志 |
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## 常见操作
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### 忘记密码
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```bash
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cd backend
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# 重置 admin 密码
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python -m app.gateway.auth.reset_admin
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# 重置指定用户密码
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python -m app.gateway.auth.reset_admin --email user@example.com
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```
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会输出新的随机密码。
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### 完全重置
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删除用户数据库，重启后自动创建新 admin：
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```bash
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rm -f backend/.deer-flow/users.db
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# 重启服务，控制台输出新密码
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```
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## 数据存储
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| 文件 | 内容 |
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|------|------|
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| `.deer-flow/users.db` | SQLite 用户数据库（密码哈希、角色） |
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| `.env` 中的 `AUTH_JWT_SECRET` | JWT 签名密钥（未设置时自动生成临时密钥，重启后 session 失效） |
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### 生产环境建议
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```bash
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# 生成持久化 JWT 密钥，避免重启后所有用户需重新登录
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python -c "import secrets; print(secrets.token_urlsafe(32))"
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# 将输出添加到 .env：
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# AUTH_JWT_SECRET=<生成的密钥>
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```
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## API 端点
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| 端点 | 方法 | 说明 |
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|------|------|------|
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| `/api/v1/auth/login/local` | POST | 邮箱密码登录（OAuth2 form） |
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| `/api/v1/auth/register` | POST | 注册新用户（user 角色） |
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| `/api/v1/auth/logout` | POST | 登出（清除 cookie） |
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| `/api/v1/auth/me` | GET | 获取当前用户信息 |
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| `/api/v1/auth/change-password` | POST | 修改密码 |
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| `/api/v1/auth/setup-status` | GET | 检查 admin 是否存在 |
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## 兼容性
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- **标准模式**（`make dev`）：完全兼容，admin 自动创建
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- **Gateway 模式**（`make dev-pro`）：完全兼容
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- **Docker 部署**：完全兼容，`.deer-flow/users.db` 需持久化卷挂载
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- **IM 渠道**（Feishu/Slack/Telegram）：通过 LangGraph SDK 通信，不经过认证层
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- **DeerFlowClient**（嵌入式）：不经过 HTTP，不受认证影响
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## 故障排查
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| 症状 | 原因 | 解决 |
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|------|------|------|
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| 启动后没看到密码 | admin 已存在（非首次启动） | 用 `reset_admin` 重置，或删 `users.db` |
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| 登录后 POST 返回 403 | CSRF token 缺失 | 确认前端已更新 |
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| 重启后需要重新登录 | `AUTH_JWT_SECRET` 未持久化 | 在 `.env` 中设置固定密钥 |
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