95 lines
3.4 KiB
TypeScript
95 lines
3.4 KiB
TypeScript
import { NextRequest, NextResponse } from 'next/server'
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function decodeJwtPayload(token: string): Record<string, unknown> | null {
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try {
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const parts = token.split('.')
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if (parts.length !== 3) return null
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let payload = parts[1].replace(/-/g, '+').replace(/_/g, '/')
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while (payload.length % 4) payload += '='
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return JSON.parse(atob(payload))
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} catch { return null }
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}
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function isValidPayload(payload: Record<string, unknown> | null): boolean {
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if (!payload) return false
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return !(payload.exp && (payload.exp as number) < Math.floor(Date.now() / 1000))
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}
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// API Key 验证：检查 ALLOWED_API_KEYS 环境变量（逗号分隔明文 key）
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// 注意：middleware 运行在 Edge Runtime，不能使用 better-sqlite3 等 Node.js 原生模块
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// DB 级别的 key 验证在 route handler 中进行（auth.ts verifyApiKey）
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function verifyApiKey(key: string): boolean {
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if (!key.startsWith('ak_')) return false
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const allowedKeys = process.env.ALLOWED_API_KEYS || ''
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if (!allowedKeys) return false
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return allowedKeys.split(',').map(k => k.trim()).includes(key)
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}
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function buildLoginRedirect(request: NextRequest) {
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const { pathname } = request.nextUrl
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const loginUrl = new URL('/login', request.url)
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const dest = pathname + (request.nextUrl.search || '')
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loginUrl.searchParams.set('redirect', dest)
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return NextResponse.redirect(loginUrl)
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}
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export function middleware(request: NextRequest) {
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const { pathname } = request.nextUrl
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// 登录/退出路径 + 内部 API 放行（自有 key 认证）
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if (pathname.startsWith('/login') || pathname === '/' ||
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pathname === '/api/auth/login' || pathname === '/api/auth/logout' ||
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pathname.startsWith('/api/internal/')) {
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return NextResponse.next()
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}
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// API Key 认证（外部系统调用）
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const authHeader = request.headers.get('authorization')
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if (authHeader?.startsWith('Bearer ak_')) {
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const key = authHeader.slice(7)
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if (verifyApiKey(key)) return NextResponse.next()
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// 无效 key：API 路由返回 401
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if (pathname.startsWith('/api/')) {
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return NextResponse.json({ error: '未授权' }, { status: 401 })
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}
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}
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// 优先检查 tlyq_session（共享 JWT）
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const sharedToken = request.cookies.get('tlyq_session')?.value
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const sharedPayload = sharedToken ? decodeJwtPayload(sharedToken) : null
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if (isValidPayload(sharedPayload)) {
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const response = pathname.startsWith('/api/') ? NextResponse.next() : NextResponse.next()
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response.cookies.set('session', JSON.stringify({ username: sharedPayload.username }), {
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httpOnly: true, sameSite: 'lax', path: '/',
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})
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return response
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}
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// 回退 session_issue（本地 JWT）
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const localToken = request.cookies.get('session_issue')?.value
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const localPayload = localToken ? decodeJwtPayload(localToken) : null
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if (pathname.startsWith('/api/')) {
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if (!isValidPayload(localPayload)) {
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return NextResponse.json({ error: '未登录' }, { status: 401 })
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}
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return NextResponse.next()
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}
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if (!isValidPayload(localPayload)) {
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const response = buildLoginRedirect(request)
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if (localToken) response.cookies.delete('session_issue')
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return response
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}
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const response = NextResponse.next()
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response.cookies.set('session', JSON.stringify({ username: localPayload.username }), {
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httpOnly: true, sameSite: 'lax', path: '/',
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})
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return response
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}
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export const config = {
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matcher: ['/((?!_next/static|_next/image|favicon.ico|.*\\.(?:svg|png|jpg|jpeg|gif|webp)$).*)'],
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}
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