如何在Express中生成CSRF令牌？

Question

新手.我正在使用ExpressJS/Node.这是我的配置内容:

var express = require('express'),
app = express.createServer(),
jade=require('jade');
// Configuration
app.configure(function(){
app.set('views', __dirname + '/views');
app.use(express.logger());
app.use(express.cookieParser());
app.use(express.session({ secret: "secretive secret" }));
app.set('view engine', 'jade');
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(require('stylus').middleware({ src: __dirname + '/public' }));
app.use(app.router);
app.use(express.static(__dirname + '/public'));
app.use(express.csrf());

我在Express目录中找到了csrf.js,看到它应该生成并分配给req.body._csrf,但我不知道如何访问它.

这是csrf.js代码

module.exports = function csrf(options) {
var options = options || {}
, value = options.value || defaultValue;

return function(req, res, next){
// generate CSRF token
var token = req.session._csrf || (req.session._csrf = utils.uid(24));

// ignore GET (for now)
if ('GET' == req.method) return next();

// determine value
var val = value(req);

// check
if (val != token) return utils.forbidden(res);

next();
}
}; 

救命？谢谢!

Answer 1

自3.x起,动态助手已从Express中删除.

新用法将app.use(express.csrf());来自Connect.

Answer 2

将令牌添加到动态助手.

app.dynamicHelpers({
  token: function(req, res) {
    return req.session._csrf;
  }
});

在您的玉石模板中引用它.

input(type='hidden', value=token)

资料来源:http: //senchalabs.github.com/connect/middleware-csrf.html