Node Express和csurf - 403(禁止)无效的csrf令牌

时间:2015-11-21 22:19:19

标签: javascript jquery ajax node.js express

仔细观察并尝试了我能在这里找到的所有东西,以及谷歌搜索的其他地方......我只是无法超越这个。我正在使用Node,Express,EJS,并尝试在表单上使用csurf,这是使用jQuery ajax发布的。无论我如何配置csurf,我得到" 403(禁止)无效的csrf令牌"

我尝试在app.js和控制器中全局配置。这是我在app.js中尝试的内容:

var express = require('express');
var session  = require('express-session');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var mysql = require('mysql');
var flash = require("connect-flash");
var csrf = require("csurf");

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

app.use(logger('dev'));
app.use(cookieParser());
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
app.use(session({
    secret: 'somethingsecret',
    resave: true,
    saveUninitialized: true,
    httpOnly: true,
    secure: false
}));
app.use(csrf());
app.use(function (req, res, next) {
    var token = req.csrfToken();
    res.cookie('XSRF-TOKEN', token);
    res.locals.csrfToken = token;
    console.log("csrf token = " + token);
    next();
});
app.use(flash());
app.use(express.static(path.join(__dirname, 'public')));

app.use(function (err, req, res, next) {
    if (err.code !== 'EBADCSRFTOKEN') return next(err);

    // handle CSRF token errors here
    res.status(403);
    res.send('form tampered with');
})

//routing
var routes = require('./routes/index');
var users = require('./routes/users');
var register = require('./routes/register');

app.use('/', routes);
app.use('/users', users);
app.use('/register', register);

...使用此控制器:

var express = require("express");
var router = express.Router();
var bodyParser = require("body-parser");
var userSvc = require("../service/userservice");

var jsonParser = bodyParser.json();

router.get("/", function(req, res, next) {
    console.log("token = " + token);
    userSvc.getAllPublicRoles(function(data) {
        res.render("register", {
            title: "Register a new account",
            roles: data
        });
    });
});

router.post("/new", jsonParser, function(req, res, next) {
    userSvc.addUser(req.body, function(result) {
        console.log("New user id = " + result.insertId);
        res.send('{"success" : "Updated Successfully", "status" : 200}');
    });
});

...而且这个观点:

形式:

<form id="registerForm" class="form-horizontal" method="post">
    <input type="hidden" name="_csrf" value="<%= csrfToken %>" />

ajax电话:

        $.ajax({
            url: "/register/new",
            type: "POST",
            dataType: "json",
            data: user
        }).done(function(data) {
            if (data) {
                console.log("Success! = " + data);
            }
        }).fail(function(data) {
            console.log("Something went wrong: " + data.responseText);
        });

然后我只是尝试在控制器中执行所有操作,从app.js中删除所有引用,调用等,并使用与上面相同的表单和ajax调用:

var express = require("express");
var router = express.Router();
var bodyParser = require("body-parser");
var csrf = require("csurf");
var userSvc = require("../service/userservice");

var csrfProtection = csrf();
var jsonParser = bodyParser.json();

router.get("/", csrfProtection, function(req, res, next) {
    var token = req.csrfToken();
    console.log("token = " + token);
    userSvc.getAllPublicRoles(function(data) {
        res.render("register", {
            title: "Register a new account",
            csrfToken: token,
            roles: data
        });
    });
});

router.post("/new", jsonParser, csrfProtection, function(req, res, next) {
    userSvc.addUser(req.body, function(result) {
        console.log("New user id = " + result.insertId);
        res.send('{"success" : "Updated Successfully", "status" : 200}');
    });
});

不知道从哪里开始。在闲暇时间,我一直在使用节点大约两个星期,所以请原谅我的无知。

4 个答案:

答案 0 :(得分:5)

如果您想将令牌存储在cookie中而不是会话中,请让csurf为您创建cookie。

if(init())
{
    return;
}

然后,当您通过POST数据使用AJAX进行呼叫时,或者作为自定义请求标头(例如'xsrf-token')时,您需要确保令牌可用。

此时,您正在向表单提供令牌,但不是实际请求(使用AJAX发送)。

例如,您可以在AJAX设置中呈现令牌:

// Store the token in a cookie called '_csrf'
app.use(csrf({cookie: true));

// Make the token available to all views
app.use(function (req, res, next){
    res.locals._csrf = req.csrfToken();
    next();
});

答案 1 :(得分:0)

经过几个小时的故障排除和搜索后,我找到了一个帮助回答它的帖子。我只需要在ajax帖子中传递标题值。有道理,我只是忽略了它。像这样:

<input type="hidden" id="_csrf" name="_csrf" value="<%= csrfToken %>" />

...然后在jQuery中:

    $.ajaxSetup({
        headers: {"X-CSRF-Token": $("#_csrf").val()}
    });

答案 2 :(得分:0)

除了在邮件标题中添加“X-CSRF-Token”之外,您要完全禁用Cookie!

  

var csrfProtection = csurf({cookie:false});

作者在这里提到它 https://github.com/expressjs/csurf/issues/52

cookie和会话验证不应该合并 - 尽管它有点误导,因为他在他的文档中结合了cookie和会话验证: https://github.com/expressjs/csurf#simple-express-example

答案 3 :(得分:0)

我个人项目的另一种方法是在我成功提交表单时重新发送新令牌:

例如,在我的表单上(文件上传)我有以下html:

<form id="upload_form" type="multipart/form-data" data-csrf="{{csrfToken}}" method="post" action="/data_assets">
  <input id="excell_upload" type="file" style="visible:hidden" name="data_assets"/>
</form>

在文件更改时,我会触发上传:

 $('#excell_upload').on('change',function(event){

      event.preventDefault();
      var formData = new FormData($("#upload_form")[0]);

      $.ajax({
        'type':$("#upload_form").attr('method'),
        'data': formData,
        'url': $("#upload_form").attr('action'),
        'processData': false,
        'contentType': false,
        'mimeType': 'multipart/form-data',
        'headers': {"X-CSRF-Token": $("#upload_form").attr('data-csrf') },
        'beforeSend': function (x) {
           if (x && x.overrideMimeType) {
               x.overrideMimeType("multipart/form-data");
          }
          $('#trigger_upload').addClass('disabled');
        },
        'success':function(data){
          $('#upload_form').attr('data-csrf',data.csrfToken)
        },
        'fail':function(){

        },
        'complete':function(){
          $('#trigger_upload').removeClass('disabled');
        }
      });
    });

如您所知,我收到一个新的csrf令牌,以便能够重新使用我的表单进行新提交。我重新生成CSRF令牌:

app.post('/data_assets',function(req,res,next){
  res.json({'csrfToken':req.csrfToken()});
});