How to force login in angular full stack yeoman? - angularjs

Is there a way to force the user to log in first in an app generated by the angular full stack yeoman ?
I tried to add the following code in the run part of app.js but was not successful
Auth.isLoggedIn(function(loggedIn) {
console.log(loggedIn);
if (!loggedIn) {
console.log("redirecting");
// event.preventDefault();
$state.go('login');
}
});
I found authentication controls in api index.js files but none for the / landing page ...
Thx

I did not use google as i should have !
To force authentication for a state, just add
authenticate: true
in the state (or all states in my case)

Without more code or information on which router you are using (generator-angular-fullstack supports both the default NgRouter and UIRouter) it is tough to give a complete answer. By your answer to your question I am assuming you have UI Router and have figured out how to do client side authentication within the generated fullstack code. However, you will also need to implement something similar to what they have done in their 'users' api to protect your api end points on the server side and return a 401/403 error.
'use strict';
var express = require('express');
var controller = require('./user.controller');
var config = require('../../config/environment');
var auth = require('../../auth/auth.service');
var router = express.Router();
router.get('/', auth.hasRole('admin'), controller.index);
router.delete('/:id', auth.hasRole('admin'), controller.destroy);
router.get('/me', auth.isAuthenticated(), controller.me);
router.put('/:id/password', auth.isAuthenticated(), controller.changePassword);
router.get('/:id', auth.isAuthenticated(), controller.show);
router.post('/', controller.create);
module.exports = router;
In the above code (which can be found by navigating to the server folder, then the api folder, then the user folder and looking at index.js) you will see that they are calling a couple of functions.
They are calling auth.hasRole('admin') and auth.isAuthenticated().
Those are functions which can be found in the server side auth/role service under the folder auth and in the auth.service.js file.
function hasRole(roleRequired) {
if (!roleRequired) throw new Error('Required role needs to be set');
return compose()
.use(isAuthenticated())
.use(function meetsRequirements(req, res, next) {
if (config.userRoles.indexOf(req.user.role) >= config.userRoles.indexOf(roleRequired)) {
next();
}
else {
res.status(403).send('Forbidden');
}
});
}
I think it is important to understand how this is working on the server side also. So, if you navigate to localhost:9000/admin and open console you will see that there is a 401 or 403 error depending on whether or not you are logged in and/or logged in as an admin user.

Just Paste authenticate:true on main.js
angular.module('testcesarApp')
.config(function ($routeProvider) {
$routeProvider
.when('/', {
templateUrl: 'app/main/main.html',
controller: 'MainCtrl',
authenticate:true
});
});

Related

File serving using ngRoute in Angular with NodeJS server

I am trying to run AngularJS, using Angular Router, with a NodeJS server. I do not plan on serving the various views in Node, but instead I want to use the angular router. This first page is served correctly with no errors but when I try to click on another link, the browser displays the following
error code. Below is the relevant code from the server script, the routing script, and where the link in the HTML is.
HTML Link
<li>Add Workout</li>
Server.js
app.get('/', function(req, res) {
res.sendFile(path.join(__dirname + '/public/app/views/home.html'));
});
app.use(express.static('public'));
App.js
var app = angular.module("fitness2Uapp", ["ngRoute"]);
app.config(function($routeProvider) {
$routeProvider
.when("/", {
templateUrl : "./app/views/home.html"
})
.when("/browse", {
templateUrl : "./app/views/browse.html"
})
.when("/add", {
templateUrl : "./add.html"
})
.when("/workout", {
templateUrl : "./app/views/workout.html"
});
});
Try putting in a "catch all" route that just redirects back to the main page. This will in turn allow the angular routing mechanism to kick in. Right now the problem is that it's trying to find an endpoint path of '/add' on the node server, but nothing is found. This should be the very last route established on your server.
I personally use AngularJS and had to do this, and everything works great. Not sure if this will also perform the same way as Angular2+
// Catch all if all other routes fail to match.
app.get('*', (req, res) => {
res.sendFile(path.resolve(`${__dirname}/path/to/home.html`));
});

node redirect not working on angular

hi I'm new to node and I'm building a simple MEAN stack app, to reduce the code I'm sending front end files like this
app.use(express.static(path.join(__dirname, 'public')));
i have also build a simple middleware for simple authentication
requireLogin = function (req, res, next) {
if (!req.user) {
console.log('redirecting :)');
res.redirect('/');
} else {
next();
}
};
app.use('/rooms',requireLogin);
I'm trying to use this middleware on routes made in angular.
but this is not working when i navigate through my angular app (it works when i directly put the URL to the address bar) i have also removed the /#/ which is added by angular.
$locationProvider.html5Mode({
enabled: true,
requireBase: false
});
I'm using ui-router for routing.
You should do redirecting on angular, but not on node.js application. For example,
requireLogin = function (req, res, next) {
if (!req.user) {
console.log('User does not exist.');
return false;
//
} else {
next();
}
};
app.use('/rooms', requireLogin);
Then, /rooms won't be able to access unless there is user logged-in.
Backend routes (express ones): Those are the routes that an end user won't have to know about or even use them (your angular app will use them to communicate with the backend to work with its data but an end user wouldn't put them directly on the browser)).
Frontend routes (angular ones): Are the routes that maps to different pages of your application and because of that, end users can use them to access some parts of your application directly.
Read Express.js or angular for handling routes in a MEAN application? for more details.

meanjs app with multiple server layout

I want to use multiple server layout on meanjs framework, but the problem is how I can attach some angular front-end view page to specific server layout, I have a special login page that have a different server layout how I can fix this.
how can angular know what server layout must be loaded for which angular state.
I add an other action in core controller:
module.exports = function(app) {
// Root routing
var core = require('../../app/controllers/core.server.controller');
app.route('/').get(core.index);
app.route('/accounts/').get(core.login);
};
As of now, we couldn't able to create two layouts from server side. they need to update their core modules and routing techniques to resolve this problem.
I tried once and i couldn't complete the process, The idea is to change layout from server side routing and call layout render function in meanjs
Add additional code in core.server.routes.js
'use strict';
module.exports = function(app) {
// Root routing
var core = require('../../app/controllers/core.server.controller');
app.route('/').get(core.index);
app.route('/admin').get(core.admin);
};
Add aditional export function in core.server.controller.js
'use strict';
/**
* Module dependencies.
*/
exports.index = function(req, res) {
res.render('index', {
user: req.user || null,
request: req
});
};
exports.admin = function(req, res) {
res.render('admin', {
user: req.user || null,
request: req
});
};
Add layouts in layout folder accordingly.This will help you create multiple layouts, but still there is a lot of routing problems will occour as i said above. If it is possible to fix it, this may work.
Thanks,

NavBar address loading angular template but not root shell

I am using Node.JS with Express, Angular.JS and the node module connect-roles for ACL. I want to allow a user with user.status of "Platinum" to access "Platinum" but not "Gold" and vice versa.
I have the ACL part working, if I enter /Platinum into the navigation bar I can't access /Gold, but when I try to access /Platinum I only get the template but not the root shell, so what comes up is this:
You made it!
You have the {{status}} status!
If I click on a link in angular to /Platinum, everything works as it should. If I enter any neutral address in the navigation bar, everything works as it should.
This should be an easy fix, but I've not figured it out.
Here is the code that sets up authorizations, I'm pretty sure everything here is okay.
ConnectRoles = require('connect-roles')
var user = new ConnectRoles({
failureHandler: function(req, res, action){
var accept = req.headers.accept || '';
res.status(403);
if(accept.indexOf('html')) {
res.render('access-denied', {action: action});
} else {
res.send('Access Denied - You don\'t have permission to: ' + action);
}
}
});
var app = express();
app.use(user.middleware());
// Setting up user authorizations,
// i.e. if req.user.status = "Platinum", they are given Platinum status
user.use('Platinum', function(req) {
if (req.user.status == 'Platinum') {
return true;
}
});
user.use('Gold', function(req) {
if (req.user.status == 'Gold') {
return true;
}
});
user.use('Admin', function(req) {
if (req.user.status == 'Admin') {
return true;
}
});
That sets up authorizations, now the problem lies below with the routing.
app.post('/login', passport.authenticate('local',
{ successRedirect: '/', failureRedirect: '/login' }));
app.get('/Platinum', user.is('Platinum'), function(req, res) {
//Obviously the code below is wrong.
res.render('templates/support/Platinum');
});
app.get('/Gold', user.is('Gold'), function(req, res) {
res.render('templates/support/Gold');
});
The way you are configuring your routes on server side (using express) is not correct. For a single page app like AngularJS, you need to do all of the routing for pages on the client (i.e. in Angular). The server still defines routes for API requests (e.g. getting and posting data) and static resources (index.html, partial HTML files, images, javascript, fonts, etc), though.
Thus the following code is wrong in your server side JS:
app.get('/Platinum', user.is('Platinum'), function(req, res) {
//Obviously the code below is wrong.
res.render('templates/support/Platinum');
});
app.get('/Gold', user.is('Gold'), function(req, res) {
res.render('templates/support/Gold');
});
Just remove those lines.
Instead, you need to define the routes that the server will handle, such as your /login post one first, and how to get static files (I suggest prefixing them all with /pub in the URL). Then you need to do something like the technique in this answer to return your index.html page if no routes are matched.
That way, when a user types http://localhost:port/Gold, express will see there is no route defined for /Gold, so it will return index.html, which will load AngularJS, run your Angular app, which will then look at the URL and see if that matches any of the routes your AngularJS app has configured, and if so, fetch the partial for that page and insert it into your ng-view (if using the core router).

Restricting access to all routes but one

I'm starting to experiment with ExpressJS + AngularJS and I've run into a stressful situation.
My goal is to have one login page and one dashboard page, and using Passport + MongoDB I'll authenticate a user in and, if credentials are correct, redirect him to the dashboard page.
I've started with the angular-express-seed and modified it so I ended up with the previously mentioned views:
$routeProvider.
when('/login', {
templateUrl: 'partials/login',
controller: 'LoginCtrl'
}).
when('/dashboard', {
templateUrl: 'partials/dashboard',
controller: 'DashboardCtrl'
}).
otherwise({
redirectTo: '/login'
});
I'm serving each partial view with:
app.get('/partials/:name', routes.partials);
exports.partials = function (req, res) {
var name = req.params.name;
res.render('partials/' + name);
};
The login system is working correctly except for the part that I can access the dashboard directly (without loging in at all).
So I guess I need to figure out if the user if authenticated, before granting him access to the dashboard (or any other area for that matter).
I found this that does the trick:
function ensureAuthenticated(req, res, next) {
if (req.isAuthenticated()) { return next(); }
res.redirect('/login');
}
and I would call it on every GET to a partial
app.get('/partials/:name', ensureAuthenticated, routes.partials);
The big problem here is that the login view is also a partial, and I don't want ensureAuthenticated to run when that's the view being requested.
Currently calling ensureAuthenticated on every partial request crashes any browser, no errors whatsoever.
What I've tried so far (and did not work):
function ensureAuthenticated(req, res, next) {
if ( req.route.params.name !== 'login' && req.isAuthenticated() ) { return next(); }
res.redirect('/login');
}
Also tried calling the login view with its own app.GET and not using ensureAuthenticated but somehow Angular flips off and does not even load.
Any ideas on how to resolve this ?
Thanks in advance.
It's unclear to me if the first (unmodified) version of ensureAuthenticated crashes your browsers, or the last version (in which you check for /partials/login), although no matter what, it shouldn't happen (if by 'crashing' you mean 'stalls', that's a tell-tale sign of Express not sending back a response)
But as an alternative, try this:
app.get('/partials/login', routes.partials);
app.get('/partials/:name', ensureAuthenticated, routes.partials);
Your routes.partials does have to check explicitly if it's called for the login route, because in that case the name parameter won't exist in req.params.
Just to make sure: do you have a server-side handler for /login as well? Otherwise the res.redirect('/login') isn't going to work.
I don't think that server side redirecting on XHR request is a good practice. XHR request should return 401 if the user is not authorized and the client side (Angular) should take the action as displaying notification message and redirecting user to the login partial. Look at this project for handling such requests. There are demo and blog post.

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