基于角色的jwt授权 [英] Role based jwt authorization
问题描述
我正在尝试使用JSON Web令牌对Node.js API进行身份验证.我可以生成令牌来对用户进行身份验证.现在,我需要根据用户角色保护我的API. 这是我路由中间件以进行身份验证和检查令牌的方法.
I am trying to authenticate a Node.js API with JSON Web Tokens. I could generate the token authenticate the users. Now I need to proptect my API based on the user roles. Here is how I route middleware to authenticate and check token.
var app = express();
var apiRoutes = express.Router();
apiRoutes.use(function (req, res, next) {
var token = req.body.token || req.param('token') || req.headers['x-access-token'];
if (token) {
jwt.verify(token, app.get('superSecret'), function (err, decoded) {
if (err) {
return res.json({ success: false, message: 'Failed to authenticate token.' });
} else {
req.decoded = decoded;
next();
}
});
} else {
return res.status(403).send({
success: false,
message: 'No token provided.'
});
}
});
apiRoutes.get('/check', function (req, res) {
//...
});
app.use('/api', apiRoutes);
这样,我保护API说/api/check
.只能由admin user
访问.现在,我有另一个super user
可以访问admin user
无法访问的/api/validate
.如何仅为super user
保护/api/validate
.我需要再编写一个中间件来做到这一点吗?
This way, I protect the API say /api/check
. This can be accessed by admin user
only. Now I have another super user
who can access /api/validate
which the admin user
can't access. How can I protect /api/validate
only for super user
. Do I need to write one more middleware to do this?
这是我现在进行管理员检查的方式,
Here is how I do the admin check now,
apiRoutes.post('/delete/:id',requireAdmin, function (req, res) {
//do the rest
};
function requireAdmin(req, res, next) {
var currentUserRole=".."; //get current user role
if('admin' == currentUserRole )
{
next();
}
else{
next(new Error("Permission denied."));
return;
}
};
类似requireSuperUser
的超级用户检查功能.这是执行管理员/超级用户检查的正确方法吗?
Similarly requireSuperUser
function for super user check.Is this the right way to do admin/super user check?
推荐答案
创建JWT时,您可以提供自己的有效负载作为私有声明.例如:
When creating the JWT, you can provide your own payload as a private claim. E.g.:
{
"sub": "1234567890",
"name": "John Doe",
"admin": true,
"superUser": false
}
以同样的方式,您可以列出已登录用户的一组用户角色
Same way you can perhaps list a set of user roles for the logged in user
{
"sub": "1234567890",
"name": "John Doe",
"roles": [
"ADMIN",
"SUPERUSER"
]
}
然后需要的是解码令牌(为此认证/授权目的最好使用express.js中间件)并检查角色,并在不允许的情况下抛出HTTP 401.如果允许,请致电next();
继续并输入匹配的路线.
What is required then is to decode the token (best use express.js middleware for this authentication/authorization purpose) and check the roles and throw a HTTP 401 when it's not allowed. When it's allowed, call next();
to go ahead and enter the matching route.
这种可能的中间件功能的小例子:
Small example of such a possible middleware function:
function canAccess(req, res, next) {
checkAuthorization(req, function (err, authorized) {
if (err || !authorized) {
res.send({message: 'Unauthorized', status: 401});
}
next();
});
function checkAuthorization(req, callback) {
// jwt decode and actual authentication admin/superuser matching goes here..
}
}
router.use(canAccess);
有关JWT索赔的更多信息: https://jwt.io/introduction
For more information on JWT claims: https://jwt.io/introduction
有关expressjs中间件的更多信息: https://expressjs.com/en/guide /using-middleware.html
For more information on expressjs middleware: https://expressjs.com/en/guide/using-middleware.html
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