我有一个ASP.NET MVC 3应用程序,其动作同时使用RequireHttps
和OutputCache
属性:
[RequireHttps]
[OutputCache(Duration = 14400, VaryByCustom = "CurrentUser"]
public ActionResult VersionB()
{
return View();
}
当我导航到该页面时,我会按预期重定向到HTTPS。
然而,在初始页面加载之后,我仍然可以通过HTTP访问页面。如果我删除OutputCache
属性,则无法再通过HTTP访问该页面。
似乎OutputCache忽略了HTTPS,因此允许对页面进行不安全的访问。是否可以缓存通过HTTPS提供的操作?
答案 0 :(得分:10)
[RequireHttps]
属性实现存在缺陷,并未考虑缓存。
这是一个修复:
[AttributeUsage(AttributeTargets.Method | AttributeTargets.Class, Inherited = true, AllowMultiple = false)]
public class MyRequireHttpsAttribute : RequireHttpsAttribute
{
protected virtual bool AuthorizeCore(HttpContextBase httpContext)
{
return httpContext.Request.IsSecureConnection;
}
public override void OnAuthorization(AuthorizationContext filterContext)
{
if (!AuthorizeCore(filterContext.HttpContext))
{
this.HandleNonHttpsRequest(filterContext);
}
else
{
var cache = filterContext.HttpContext.Response.Cache;
cache.SetProxyMaxAge(new TimeSpan(0L));
cache.AddValidationCallback(this.CacheValidateHandler, null);
}
}
private void CacheValidateHandler(HttpContext context, object data, ref HttpValidationStatus validationStatus)
{
validationStatus = this.OnCacheAuthorization(new HttpContextWrapper(context));
}
protected virtual HttpValidationStatus OnCacheAuthorization(HttpContextBase httpContext)
{
if (!AuthorizeCore(httpContext))
{
return HttpValidationStatus.IgnoreThisRequest;
}
return HttpValidationStatus.Valid;
}
}
然后:
[MyRequireHttps]
[OutputCache(Duration = 14400, VaryByCustom = "CurrentUser"]
public ActionResult VersionB()
{
return View();
}