mirror of
https://github.com/Wei-Shaw/claude-relay-service.git
synced 2026-01-23 09:38:02 +00:00
532 lines
17 KiB
JavaScript
532 lines
17 KiB
JavaScript
const apiKeyService = require('../services/apiKeyService');
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const logger = require('../utils/logger');
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const redis = require('../models/redis');
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const { RateLimiterRedis } = require('rate-limiter-flexible');
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// 🔑 API Key验证中间件（优化版）
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const authenticateApiKey = async (req, res, next) => {
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const startTime = Date.now();
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try {
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// 安全提取API Key，支持多种格式
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const apiKey = req.headers['x-api-key'] ||
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req.headers['authorization']?.replace(/^Bearer\s+/i, '') ||
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req.headers['api-key'];
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if (!apiKey) {
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logger.security(`🔒 Missing API key attempt from ${req.ip || 'unknown'}`);
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return res.status(401).json({
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error: 'Missing API key',
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message: 'Please provide an API key in the x-api-key header or Authorization header'
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});
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}
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// 基本API Key格式验证
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if (typeof apiKey !== 'string' || apiKey.length < 10 || apiKey.length > 512) {
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logger.security(`🔒 Invalid API key format from ${req.ip || 'unknown'}`);
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return res.status(401).json({
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error: 'Invalid API key format',
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message: 'API key format is invalid'
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});
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}
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// 验证API Key（带缓存优化）
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const validation = await apiKeyService.validateApiKey(apiKey);
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if (!validation.valid) {
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const clientIP = req.ip || req.connection?.remoteAddress || 'unknown';
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logger.security(`🔒 Invalid API key attempt: ${validation.error} from ${clientIP}`);
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return res.status(401).json({
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error: 'Invalid API key',
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message: validation.error
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});
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}
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// 检查速率限制（优化：只在验证成功后检查）
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const rateLimitResult = await apiKeyService.checkRateLimit(validation.keyData.id);
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if (!rateLimitResult.allowed) {
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logger.security(`🚦 Rate limit exceeded for key: ${validation.keyData.id} (${validation.keyData.name})`);
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return res.status(429).json({
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error: 'Rate limit exceeded',
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message: `Too many requests. Limit: ${rateLimitResult.limit} requests per minute`,
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resetTime: rateLimitResult.resetTime,
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retryAfter: rateLimitResult.resetTime
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});
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}
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// 设置标准速率限制响应头
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res.setHeader('X-RateLimit-Limit', rateLimitResult.limit);
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res.setHeader('X-RateLimit-Remaining', Math.max(0, rateLimitResult.limit - rateLimitResult.current));
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res.setHeader('X-RateLimit-Reset', rateLimitResult.resetTime);
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res.setHeader('X-RateLimit-Policy', `${rateLimitResult.limit};w=60`);
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// 将验证信息添加到请求对象（只包含必要信息）
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req.apiKey = {
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id: validation.keyData.id,
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name: validation.keyData.name,
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tokenLimit: validation.keyData.tokenLimit,
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requestLimit: validation.keyData.requestLimit,
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claudeAccountId: validation.keyData.claudeAccountId
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};
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req.usage = validation.keyData.usage;
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const authDuration = Date.now() - startTime;
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logger.api(`🔓 Authenticated request from key: ${validation.keyData.name} (${validation.keyData.id}) in ${authDuration}ms`);
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next();
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} catch (error) {
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const authDuration = Date.now() - startTime;
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logger.error(`❌ Authentication middleware error (${authDuration}ms):`, {
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error: error.message,
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stack: error.stack,
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ip: req.ip,
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userAgent: req.get('User-Agent'),
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url: req.originalUrl
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});
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res.status(500).json({
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error: 'Authentication error',
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message: 'Internal server error during authentication'
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});
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}
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};
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// 🛡️ 管理员验证中间件（优化版）
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const authenticateAdmin = async (req, res, next) => {
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const startTime = Date.now();
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try {
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// 安全提取token，支持多种方式
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const token = req.headers['authorization']?.replace(/^Bearer\s+/i, '') ||
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req.cookies?.adminToken ||
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req.headers['x-admin-token'];
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if (!token) {
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logger.security(`🔒 Missing admin token attempt from ${req.ip || 'unknown'}`);
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return res.status(401).json({
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error: 'Missing admin token',
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message: 'Please provide an admin token'
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});
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}
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// 基本token格式验证
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if (typeof token !== 'string' || token.length < 32 || token.length > 512) {
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logger.security(`🔒 Invalid admin token format from ${req.ip || 'unknown'}`);
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return res.status(401).json({
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error: 'Invalid admin token format',
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message: 'Admin token format is invalid'
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});
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}
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// 获取管理员会话（带超时处理）
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const adminSession = await Promise.race([
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redis.getSession(token),
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new Promise((_, reject) =>
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setTimeout(() => reject(new Error('Session lookup timeout')), 5000)
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)
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]);
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if (!adminSession || Object.keys(adminSession).length === 0) {
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logger.security(`🔒 Invalid admin token attempt from ${req.ip || 'unknown'}`);
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return res.status(401).json({
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error: 'Invalid admin token',
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message: 'Invalid or expired admin session'
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});
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}
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// 检查会话活跃性（可选：检查最后活动时间）
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const now = new Date();
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const lastActivity = new Date(adminSession.lastActivity || adminSession.loginTime);
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const inactiveDuration = now - lastActivity;
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const maxInactivity = 24 * 60 * 60 * 1000; // 24小时
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if (inactiveDuration > maxInactivity) {
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logger.security(`🔒 Expired admin session for ${adminSession.username} from ${req.ip || 'unknown'}`);
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await redis.deleteSession(token); // 清理过期会话
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return res.status(401).json({
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error: 'Session expired',
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message: 'Admin session has expired due to inactivity'
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});
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}
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// 更新最后活动时间（异步，不阻塞请求）
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redis.setSession(token, {
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...adminSession,
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lastActivity: now.toISOString()
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}, 86400).catch(error => {
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logger.error('Failed to update admin session activity:', error);
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});
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// 设置管理员信息（只包含必要信息）
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req.admin = {
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id: adminSession.adminId || 'admin',
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username: adminSession.username,
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sessionId: token,
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loginTime: adminSession.loginTime
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};
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const authDuration = Date.now() - startTime;
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logger.security(`🔐 Admin authenticated: ${adminSession.username} in ${authDuration}ms`);
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next();
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} catch (error) {
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const authDuration = Date.now() - startTime;
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logger.error(`❌ Admin authentication error (${authDuration}ms):`, {
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error: error.message,
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ip: req.ip,
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userAgent: req.get('User-Agent'),
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url: req.originalUrl
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});
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res.status(500).json({
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error: 'Authentication error',
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message: 'Internal server error during admin authentication'
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});
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}
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};
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// 注意：使用统计现在直接在/api/v1/messages路由中处理，
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// 以便从Claude API响应中提取真实的usage数据
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// 🚦 CORS中间件（优化版）
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const corsMiddleware = (req, res, next) => {
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const origin = req.headers.origin;
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// 允许的源（可以从配置文件读取）
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const allowedOrigins = [
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'http://localhost:3000',
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'https://localhost:3000',
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'http://127.0.0.1:3000',
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'https://127.0.0.1:3000'
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];
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// 设置CORS头
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if (allowedOrigins.includes(origin) || !origin) {
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res.header('Access-Control-Allow-Origin', origin || '*');
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}
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res.header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS');
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res.header('Access-Control-Allow-Headers', [
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'Origin',
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'X-Requested-With',
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'Content-Type',
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'Accept',
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'Authorization',
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'x-api-key',
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'api-key',
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'x-admin-token'
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].join(', '));
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res.header('Access-Control-Expose-Headers', [
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'X-RateLimit-Limit',
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'X-RateLimit-Remaining',
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'X-RateLimit-Reset',
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'X-RateLimit-Policy'
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].join(', '));
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res.header('Access-Control-Max-Age', '86400'); // 24小时预检缓存
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res.header('Access-Control-Allow-Credentials', 'true');
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if (req.method === 'OPTIONS') {
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res.status(204).end();
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} else {
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next();
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}
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};
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// 📝 请求日志中间件（优化版）
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const requestLogger = (req, res, next) => {
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const start = Date.now();
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const requestId = Math.random().toString(36).substring(2, 15);
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// 添加请求ID到请求对象
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req.requestId = requestId;
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res.setHeader('X-Request-ID', requestId);
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// 获取客户端信息
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const clientIP = req.ip || req.connection?.remoteAddress || req.socket?.remoteAddress || 'unknown';
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const userAgent = req.get('User-Agent') || 'unknown';
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const referer = req.get('Referer') || 'none';
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// 记录请求开始
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if (req.originalUrl !== '/health') { // 避免健康检查日志过多
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logger.request(`▶️ [${requestId}] ${req.method} ${req.originalUrl} | IP: ${clientIP}`);
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}
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res.on('finish', () => {
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const duration = Date.now() - start;
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const contentLength = res.get('Content-Length') || '0';
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// 构建日志元数据
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const logMetadata = {
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requestId,
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method: req.method,
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url: req.originalUrl,
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status: res.statusCode,
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duration,
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contentLength,
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ip: clientIP,
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userAgent,
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referer
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};
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// 根据状态码选择日志级别
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if (res.statusCode >= 500) {
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logger.error(`◀️ [${requestId}] ${req.method} ${req.originalUrl} | ${res.statusCode} | ${duration}ms | ${contentLength}B`, logMetadata);
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} else if (res.statusCode >= 400) {
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logger.warn(`◀️ [${requestId}] ${req.method} ${req.originalUrl} | ${res.statusCode} | ${duration}ms | ${contentLength}B`, logMetadata);
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} else if (req.originalUrl !== '/health') {
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logger.request(`◀️ [${requestId}] ${req.method} ${req.originalUrl} | ${res.statusCode} | ${duration}ms | ${contentLength}B`, logMetadata);
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}
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// API Key相关日志
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if (req.apiKey) {
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logger.api(`📱 [${requestId}] Request from ${req.apiKey.name} (${req.apiKey.id}) | ${duration}ms`);
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}
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// 慢请求警告
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if (duration > 5000) {
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logger.warn(`🐌 [${requestId}] Slow request detected: ${duration}ms for ${req.method} ${req.originalUrl}`);
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}
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});
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res.on('error', (error) => {
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const duration = Date.now() - start;
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logger.error(`💥 [${requestId}] Response error after ${duration}ms:`, error);
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});
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next();
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};
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// 🛡️ 安全中间件（增强版）
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const securityMiddleware = (req, res, next) => {
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// 设置基础安全头
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res.setHeader('X-Content-Type-Options', 'nosniff');
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res.setHeader('X-Frame-Options', 'DENY');
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res.setHeader('X-XSS-Protection', '1; mode=block');
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res.setHeader('Referrer-Policy', 'strict-origin-when-cross-origin');
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// 添加更多安全头
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res.setHeader('X-DNS-Prefetch-Control', 'off');
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res.setHeader('X-Download-Options', 'noopen');
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res.setHeader('X-Permitted-Cross-Domain-Policies', 'none');
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// Cross-Origin-Opener-Policy (仅对可信来源设置)
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const host = req.get('host') || '';
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const isLocalhost = host.includes('localhost') || host.includes('127.0.0.1') || host.includes('0.0.0.0');
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const isHttps = req.secure || req.headers['x-forwarded-proto'] === 'https';
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if (isLocalhost || isHttps) {
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res.setHeader('Cross-Origin-Opener-Policy', 'same-origin');
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res.setHeader('Cross-Origin-Resource-Policy', 'same-origin');
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res.setHeader('Origin-Agent-Cluster', '?1');
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}
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// Content Security Policy (适用于web界面)
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if (req.path.startsWith('/web') || req.path === '/') {
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res.setHeader('Content-Security-Policy', [
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'default-src \'self\'',
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'script-src \'self\' \'unsafe-inline\' \'unsafe-eval\' https://unpkg.com https://cdn.tailwindcss.com https://cdnjs.cloudflare.com https://cdn.jsdelivr.net',
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'style-src \'self\' \'unsafe-inline\' https://cdn.tailwindcss.com https://cdnjs.cloudflare.com',
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'font-src \'self\' https://cdnjs.cloudflare.com',
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'img-src \'self\' data:',
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'connect-src \'self\'',
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'frame-ancestors \'none\'',
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'base-uri \'self\'',
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'form-action \'self\''
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].join('; '));
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}
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// Strict Transport Security (HTTPS)
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if (req.secure || req.headers['x-forwarded-proto'] === 'https') {
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res.setHeader('Strict-Transport-Security', 'max-age=15552000; includeSubDomains');
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}
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// 移除泄露服务器信息的头
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res.removeHeader('X-Powered-By');
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res.removeHeader('Server');
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// 防止信息泄露
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res.setHeader('Cache-Control', 'no-cache, no-store, must-revalidate');
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res.setHeader('Pragma', 'no-cache');
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res.setHeader('Expires', '0');
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next();
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};
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// 🚨 错误处理中间件（增强版）
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const errorHandler = (error, req, res, _next) => {
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const requestId = req.requestId || 'unknown';
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const isDevelopment = process.env.NODE_ENV === 'development';
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// 记录详细错误信息
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logger.error(`💥 [${requestId}] Unhandled error:`, {
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error: error.message,
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stack: error.stack,
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url: req.originalUrl,
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method: req.method,
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ip: req.ip || 'unknown',
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userAgent: req.get('User-Agent') || 'unknown',
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apiKey: req.apiKey ? req.apiKey.id : 'none',
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admin: req.admin ? req.admin.username : 'none'
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});
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// 确定HTTP状态码
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let statusCode = 500;
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let errorMessage = 'Internal Server Error';
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let userMessage = 'Something went wrong';
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if (error.status && error.status >= 400 && error.status < 600) {
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statusCode = error.status;
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}
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// 根据错误类型提供友好的错误消息
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switch (error.name) {
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case 'ValidationError':
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statusCode = 400;
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errorMessage = 'Validation Error';
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userMessage = 'Invalid input data';
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break;
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case 'CastError':
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statusCode = 400;
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errorMessage = 'Cast Error';
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userMessage = 'Invalid data format';
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break;
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case 'MongoError':
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case 'RedisError':
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statusCode = 503;
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errorMessage = 'Database Error';
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userMessage = 'Database temporarily unavailable';
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break;
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case 'TimeoutError':
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statusCode = 408;
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errorMessage = 'Request Timeout';
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userMessage = 'Request took too long to process';
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break;
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default:
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if (error.message && !isDevelopment) {
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// 在生产环境中，只显示安全的错误消息
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if (error.message.includes('ECONNREFUSED')) {
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userMessage = 'Service temporarily unavailable';
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} else if (error.message.includes('timeout')) {
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userMessage = 'Request timeout';
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}
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}
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}
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// 设置响应头
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res.setHeader('X-Request-ID', requestId);
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// 构建错误响应
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const errorResponse = {
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error: errorMessage,
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message: isDevelopment ? error.message : userMessage,
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requestId,
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timestamp: new Date().toISOString()
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};
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// 在开发环境中包含更多调试信息
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if (isDevelopment) {
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errorResponse.stack = error.stack;
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errorResponse.url = req.originalUrl;
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errorResponse.method = req.method;
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}
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res.status(statusCode).json(errorResponse);
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};
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// 🌐 全局速率限制中间件（延迟初始化）
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let rateLimiter = null;
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const getRateLimiter = () => {
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if (!rateLimiter) {
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try {
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const client = redis.getClient();
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if (!client) {
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logger.warn('⚠️ Redis client not available for rate limiter');
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return null;
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}
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rateLimiter = new RateLimiterRedis({
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storeClient: client,
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keyPrefix: 'global_rate_limit',
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points: 1000, // 请求数量
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duration: 900, // 15分钟 (900秒)
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blockDuration: 900, // 阻塞时间15分钟
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});
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logger.info('✅ Rate limiter initialized successfully');
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} catch (error) {
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logger.warn('⚠️ Rate limiter initialization failed, using fallback', { error: error.message });
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return null;
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}
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}
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return rateLimiter;
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};
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const globalRateLimit = async (req, res, next) => {
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// 跳过健康检查和内部请求
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if (req.path === '/health' || req.path === '/api/health') {
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return next();
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}
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const limiter = getRateLimiter();
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if (!limiter) {
|
||
// 如果Redis不可用，直接跳过速率限制
|
||
return next();
|
||
}
|
||
|
||
const clientIP = req.ip || req.connection?.remoteAddress || 'unknown';
|
||
|
||
try {
|
||
await limiter.consume(clientIP);
|
||
next();
|
||
} catch (rejRes) {
|
||
const remainingPoints = rejRes.remainingPoints || 0;
|
||
const msBeforeNext = rejRes.msBeforeNext || 900000;
|
||
|
||
logger.security(`🚦 Global rate limit exceeded for IP: ${clientIP}`);
|
||
|
||
res.set({
|
||
'Retry-After': Math.round(msBeforeNext / 1000) || 900,
|
||
'X-RateLimit-Limit': 1000,
|
||
'X-RateLimit-Remaining': remainingPoints,
|
||
'X-RateLimit-Reset': new Date(Date.now() + msBeforeNext).toISOString()
|
||
});
|
||
|
||
res.status(429).json({
|
||
error: 'Too Many Requests',
|
||
message: 'Too many requests from this IP, please try again later.',
|
||
retryAfter: Math.round(msBeforeNext / 1000)
|
||
});
|
||
}
|
||
};
|
||
|
||
// 📊 请求大小限制中间件
|
||
const requestSizeLimit = (req, res, next) => {
|
||
const maxSize = 10 * 1024 * 1024; // 10MB
|
||
const contentLength = parseInt(req.headers['content-length'] || '0');
|
||
|
||
if (contentLength > maxSize) {
|
||
logger.security(`🚨 Request too large: ${contentLength} bytes from ${req.ip}`);
|
||
return res.status(413).json({
|
||
error: 'Payload Too Large',
|
||
message: 'Request body size exceeds limit',
|
||
limit: '10MB'
|
||
});
|
||
}
|
||
|
||
next();
|
||
};
|
||
|
||
module.exports = {
|
||
authenticateApiKey,
|
||
authenticateAdmin,
|
||
corsMiddleware,
|
||
requestLogger,
|
||
securityMiddleware,
|
||
errorHandler,
|
||
globalRateLimit,
|
||
requestSizeLimit
|
||
}; |