经常看到在项目中ajax post数据到服务器不加防伪标记,造成CSRF攻击
在Asp.net Mvc里加入防伪标记很简单在表单中加入Html.AntiForgeryToken()即可。
Html.AntiForgeryToken()会生成一对加密的字符串,分别存放在Cookies 和input 中。
我们在ajax post中也带上AntiForgeryToken
@model WebApplication1.Controllers.Person @{ ViewBag.Title = "Index"; } <h2>Index</h2> <form id="form1"> <div class="form-horizontal"> <h4>Persen</h4> <hr /> @Html.ValidationSummary(true,"",new { @class = "text-danger" }) <div class="form-group"> @Html.LabelFor(model => model.Name,htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Name,new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Name,new { @class = "text-danger" }) </div> </div> <div class="form-group"> @Html.LabelFor(model => model.Age,htmlAttributes: new { @class = "control-label col-md-2" }) <div class="col-md-10"> @Html.EditorFor(model => model.Age,new { htmlAttributes = new { @class = "form-control" } }) @Html.ValidationMessageFor(model => model.Age,new { @class = "text-danger" }) </div> </div> <div class="form-group"> <div class="col-md-offset-2 col-md-10"> <input type="button" id="save" value="Create" class="btn btn-default" /> </div> </div> </div> </form> <script src="~/Scripts/jquery-1.10.2.min.js"></script> <script src="~/Scripts/jquery.validate.min.js"></script> <script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script> <script type="text/javascript"> $(function () { //var token = $('[name=__RequestVerificationToken]'); //获取防伪标记 var token = $('@Html.AntiForgeryToken()').val(); var headers = {}; //防伪标记放入headers //也可以将防伪标记放入data headers["__RequestVerificationToken"] = token; $("#save").click(function () { $.ajax({ type: 'POST',url: '/Home/Index',cache: false,headers: headers,data: { Name: "yangwen",Age: "1" },success: function (data) { alert(data) },error: function () { alert("Error") } }); }) }) </script>
放在cookies里面的加密字符串
控制器中代码
using System; using System.Collections.Generic; using System.Linq; using System.Net; using System.Web; using System.Web.Helpers; using System.Web.Mvc; namespace WebApplication1.Controllers { public class HomeController : Controller { public ActionResult Index() { return View(); } [HttpPost] [MyValidateAntiForgeryToken] public ActionResult Index(Person p) { return Json(true,JsonRequestBehavior.AllowGet); } } public class Person { public string Name { get; set; } public int Age { get; set; } } public class MyValidateAntiForgeryToken : AuthorizeAttribute { public override void OnAuthorization(AuthorizationContext filterContext) { var request = filterContext.HttpContext.Request; if (request.HttpMethod == WebRequestMethods.Http.Post) { if (request.IsAjaxRequest()) { var antiForgeryCookie = request.Cookies[AntiForgeryConfig.CookieName]; var cookieValue = antiForgeryCookie != null ? antiForgeryCookie.Value : null; //从cookies 和 Headers 中 验证防伪标记 //这里可以加try-catch AntiForgery.Validate(cookieValue,request.Headers["__RequestVerificationToken"]); } else { new ValidateAntiForgeryTokenAttribute() .OnAuthorization(filterContext); } } } } }
相关文章
IE6是一个非常老旧的网页浏览器,虽然现在很少人再使用它,但...
PHP中的count()函数是用来计算数组或容器中元素的个数。这个...
使用 AJAX(Asynchronous JavaScript and XML)技术可以在不...
Ajax(Asynchronous JavaScript and XML)是一种用于改进网页...
本文将介绍如何通过AJAX下载Excel文件流。通过AJAX,我们可以...
Ajax是一种用于客户端和服务器之间的异步通信技术。通过Ajax...