v1.0.4: Security hardening - rate limiting, middleware, HSTS, password strength, anti-enumeration

2026-02-21 18:55:10 +01:00
parent b75bf9bb30
commit 8ef2cbe68e
15 changed files with 289 additions and 14 deletions
--- a/src/middleware.ts
+++ b/src/middleware.ts
@@ -0,0 +1,114 @@
+import { NextRequest, NextResponse } from 'next/server'
+import { jwtVerify } from 'jose'
+
+const JWT_SECRET = new TextEncoder().encode(
+  process.env.NEXTAUTH_SECRET || 'dev-only-fallback-do-not-use-in-production'
+)
+
+// Routes that require authentication
+const PROTECTED_ROUTES = ['/app', '/settings', '/admin']
+
+// Routes that should redirect to /app if already logged in
+const AUTH_ROUTES = ['/login', '/register']
+
+// API routes that are public (no auth needed)
+const PUBLIC_API_PREFIXES = [
+  '/api/auth/login',
+  '/api/auth/register',
+  '/api/auth/forgot-password',
+  '/api/auth/reset-password',
+  '/api/auth/verify-email',
+  '/api/auth/resend-verification',
+  '/api/auth/logout',
+  '/api/contact',
+  '/api/demo',
+  '/api/donate',
+  '/api/rapports/',
+  '/api/tenants/by-slug/',
+]
+
+export async function middleware(req: NextRequest) {
+  const { pathname } = req.nextUrl
+  const token = req.cookies.get('auth-token')?.value
+
+  // Verify token if present
+  let user: any = null
+  if (token) {
+    try {
+      const { payload } = await jwtVerify(token, JWT_SECRET)
+      user = payload.user
+    } catch {
+      // Invalid/expired token — clear it
+      const response = NextResponse.redirect(new URL('/login', req.url))
+      response.cookies.delete('auth-token')
+      // Only redirect if accessing protected routes
+      if (PROTECTED_ROUTES.some(r => pathname.startsWith(r))) {
+        return response
+      }
+    }
+  }
+
+  // Protected routes: redirect to login if not authenticated
+  if (PROTECTED_ROUTES.some(r => pathname.startsWith(r))) {
+    if (!user) {
+      const loginUrl = new URL('/login', req.url)
+      loginUrl.searchParams.set('redirect', pathname)
+      return NextResponse.redirect(loginUrl)
+    }
+
+    // Admin routes: only SERVER_ADMIN and TENANT_ADMIN
+    if (pathname.startsWith('/admin') && user.role !== 'SERVER_ADMIN' && user.role !== 'TENANT_ADMIN') {
+      return NextResponse.redirect(new URL('/app', req.url))
+    }
+  }
+
+  // Auth routes: redirect to /app if already logged in
+  if (AUTH_ROUTES.some(r => pathname.startsWith(r))) {
+    if (user) {
+      return NextResponse.redirect(new URL('/app', req.url))
+    }
+  }
+
+  // API routes: check auth for non-public endpoints
+  if (pathname.startsWith('/api/') && !PUBLIC_API_PREFIXES.some(p => pathname.startsWith(p))) {
+    if (!user) {
+      // Allow /api/auth/me to return null (used for auth check)
+      if (pathname === '/api/auth/me') {
+        return NextResponse.next()
+      }
+      // Allow /api/icons GET (public for symbol loading)
+      if (pathname === '/api/icons' && req.method === 'GET') {
+        return NextResponse.next()
+      }
+      return NextResponse.json({ error: 'Nicht autorisiert' }, { status: 401 })
+    }
+  }
+
+  // Security: block common attack paths
+  if (
+    pathname.includes('..') ||
+    pathname.includes('.env') ||
+    pathname.includes('wp-admin') ||
+    pathname.includes('wp-login') ||
+    pathname.includes('.php') ||
+    pathname.includes('xmlrpc') ||
+    pathname.match(/\.(sql|bak|config|log|ini)$/i)
+  ) {
+    return new NextResponse(null, { status: 404 })
+  }
+
+  return NextResponse.next()
+}
+
+export const config = {
+  matcher: [
+    /*
+     * Match all request paths except:
+     * - _next/static (static files)
+     * - _next/image (image optimization)
+     * - favicon.ico, sitemap.xml, robots.txt
+     * - public files (images, sw.js, etc.)
+     */
+    '/((?!_next/static|_next/image|favicon.ico|sitemap.xml|robots.txt|icons/|sw.js|manifest.json|opengraph-image).*)',
+  ],
+}