Restful Web service Authentication and Authorization with Apache Shiro - apache

I am able to authenticate web based application using apache shiro through databases using JDBC relam. Further more, I am successively able to make the use of Shiro-Filters to grant access for particular web-resource or http urls using Shiro filter configuation in web.xml and configuration into shiro.ini.
Now, I want to implement the same functionality for the webservices too. In Particular, I want user to hit the login-url for getting the token, if the credentials are valid. And after that, all the successive requests for the webservices has to be validated based on that particular token for the user.
I have no any clue to implement this. Any suggestions, procedures, or suggestive links could help me alot !!

I suggest you to use jersey web framwork since it's very simple, in java and annotated!
You specify your uri's, roles, permission in shiro.ini as you know and after that make a web project on jersey.
After that the use in a java code is clear and simple! See how to retrieve
Code in jersey :
/**
* login to app
* #param username
* #param password
* #return
* since v0.6.4
*/
#PUT
#Path("login")
#Produces({"application/json"})
public Response loginv3(
#FormParam("username") String username,
#FormParam("password") String password){
return login(username, password);
}
In this case we will retrieve the books only if are a user connected and that we have "reader" role :
#GET
#Path("/books")
#Produces({"application/json"})
#RequiresUser
#RequiresRoles("reader")
It's realy easy! See the shiro documentation : shiro annotation reference

This mecanic is implemented by shiro, the token is passed to the browser and is stored as a cookie on the client navigator. After that shiro will pass the token on each connection to the service thrue the browser.
Try first to have authentication propaged true your application : authen shiro doc
Please implement the shiro Step by Step project in order to validate the concepts of Authentication and of Autorization ! :)
Give me some feedback please. Enjoy it :)

user authentication with shiro is show in shiro example on GIT. Simply fork this git to have it working.
Shiro is passing a cookie in order to keep the connection alive! :) The transfert of the cookie is managed by shiro, you won't have to think of it.
enjoy :)

Related

Google Sign-in and Spring Security

I am ashamed to admit that I burned four full days trying to get Spring Security 3.1 to play nicely with Google Sign-in in a standard JSF web application. Both are awesome frameworks in their own right but they seemed incompatible. I finally got it to work in some fashion but strongly suspect that I have missed some fundamental concept and am not doing it the best way.
I am writing an app that our helpdesk uses to track system testing during maintenance activities when our systems are down and cannot host the app, so it is hosted externally. Our Active Directory and IdP are down during this activity so I cannot use our normal authentication systems. Google Sign-in is a perfect solution for this.
Google Sign-in works great in the browser using Google Javascript libraries and some simple code. The browser communicates with Google to determine if the user is already signed in, and if not, opens a separate window where the user can submit credentials and authenticate. Then a small bit of Javascript can send a concise, ephemeral id_token returned from Google to the server which the server can use to verify the authentication independently with Google. That part was easy. The beauty is that if the user is already signed into Gmail or some other Google app, authentication has already happened and Google does not challenge the user again.
Spring Security works great on the server side to protect specified resources and authenticate a user with a username and password. However, in this case, we never see the username or password - the credentials are protected by secure communication between the browser and Google. All we know is whether or not the user is authenticated. We can get the Google username, but Spring Security expects credentials that it can use to authenticate, to a database, in-memory user base, or any other system. It is not, to my knowledge, compatible with another system that simply provides yea-or-nay authentication in the browser.
I found many good examples online that use Spring Boot with EnableOAuth2Sso (e.g. here) but surprisingly few that use Spring Security in a standard app server which does not support EnableOAuth2Sso, and those few did not show any solution I could discern.
Here is how I've done it. I followed Google's simple directions here to provide authentication in the browser. I added this code to the onSignIn() method to send the id_token to the server.
var xhr = new XMLHttpRequest(); // Trigger an authentication for Spring security
xhr.open("POST", "/<my app context>/j_spring_security_check", true);
xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
var params = "profileID=" + profile.getId() + "&fullname=" + profile.getName() + "&email=" + profile.getEmail() + "&id_token=" + googleUser.getAuthResponse().id_token
+ "&j_username=" + profile.getEmail() + "&j_password=" + id_token;
xhr.send(params);
window.location.replace("/<my app context>/index.xhtml");
Unfortunately the Spring Authentication object, when passed to the AuthenticationProvider that I provided, did not contain anything but the j_username and j_password parameters as Authentication.getPrincipal() and Authentication.getCredentials(), but this is all I really needed. This is a bit of an abuse of those parameters since I have set them to email and id_token, not username and password.
I wanted to pass the user's full name and email, which Google provides in Javascript as googleUser.getName() and googleUser.getEmail(), to the backend as well. Since Spring Security does not accommodate anything but the username/password, and I was using Primefaces/JSF, I used Primefaces RemoteCommand to call a method on the backing bean with this information. This also feels a little clumsy.
In addition, I had to use window.location.replace() (in code above) because Spring Security did not redirect to my index.xhtml page as expected when I set this in the context with:
<security:form-login login-page='/login.xhtml' authentication-failure-url="/login.xhtml?error=true" default-target-url="/index.html" always-use-default-target="true" />
I have no idea why this does not work.
However, the app does now behave as I want in that it authenticates the user and the authenticated user can access the resources specified in Spring Security, and I wanted to share this in case anyone is doing a similar thing. Can anyone suggest a cleaner/better way? Thanks in advance.

User authentication and login flow with Ember and JSON web tokens

I'm trying to figure out how is best to do authentication and login flow with Ember. I'll also add that this is the first web app I've built so it's all a bit new to me.
I have an Express.js backend with protected endpoints using JWTs (I'm using Passport, express-jwt and jsonwebtoken for that) and that all works.
On the client-side, I'm using Ember
Simple Auth with the JWT authenticator. I have the login flow working (I'm using the login-controller-mixin) and correctly see the isAuthenticated flag in the inspector after a successful login.
The thing I'm struggling with is what to do after login: once a user logs in and gets the token, should I make a subsequent call to get the user details, e.g. GET /me, so that I can then have a representative user model client side? These details would then let me transition to the appropriate route.
See this example in the repo for an example of how to add a property to the session that provides access to the current user.

Laravel 4 [API] how do i check if i already logged in from the consumer?

I've been creating API and consumer by following Simple API Development with Laravel from Aaron Kuzemchak. I got the problem after I success to auth via API from my consumer; I do not know how to check it, if the consummer already success logged in or not at the other pages...
For example, at the first; I show the login page, click the submit button to check the credentials via API. The login attempt is working, success to logged in and redirect to dashboard. But, if I haven't logged in and accessed the dashboard from URL, i got the dashboard :O
The API server and the consumer have separated machine and the database only exists at the API server.
Am I doing this right (with the flow for the API and Consumer) ?
At the consumer, how can I get to know if the user already logged in or not (after success attempt the credential)? (somehow? someidea?)
Thank you before... :)
This question is very confusing, probably because I haven't watched that screencast yet, but shouldn't Auth::check() be what you are looking for? It will return true or false depending on if the user is logged in.
Just to make sure:
You have a back end API built from the tutorial posted here: http://kuzemchak.net/blog/entry/laracon-slides-and-video
You're using HTTP Basic authentication as described in the above tutorial
You're building a (consumer) front end web interface for users on a separate server
Your consumer interface uses forms based authentication (a login form)
The backend API uses HTTP basic authentication (and the consumer sends an API key for the user with each request). As such, the backend won't keep track of a user being logged in. That means your consumer interface will need to do this.
You could use the Laravel Auth class for this normally, but your front end would normally have access to the database and the bundled authentication drivers could just check a username/password.
I'd say your options are:
Store details of the user in a session using the Session class (feels a bit nasty but simple)
Write an authentication driver and then use the Auth class (advanced but cleaner: http://www.karlvalentin.de/1903/write-your-own-auth-driver-for-laravel-4.html)
Just talk straight to the database using the existing Auth class and Eloquent

Authenticate against EJB via RESTeasy webservice

I am trying to setup a REST-webservice with RESTeasy that access EJBs that are deployed on a JBoss 7.1.1.
I've been successful in:
Setting up Beans to be accessed via REST
Configuring SSL for the connection
Setting up a PreProcessInterceptor that uses HTTP Basic Auth to ask the User for his credentials.
Currently I basically just check the credentials hardcoded in the interceptor.
This works to make sure that the User is authenticated, but our Beans query for the name of the currently logged in Principal for some Beancalls like this:
#Resource
private SessionContext context = null;
[...]
String userName = context.getCallerPrincipal().getName();
Currently userName is now always anonymous. What is the right way to set the caller principal? Do I do this in an Interceptor? Or in the Bean itself? My goal is to basically be able to call a method loginUserWithEJBOnJboss(String user, String pass) that uses the login-methods that are configured within the jboss and sets the principal correctly.
I am at a loss here, google didn't find anything. Maybe I am just searching for the wrong words.
So yeah, as always soon after asking I find the solution myself. I think sometimes I only ask because I know this will happen.
So the solution are these methods:
SecurityContextAssociation.setPrincipal(new SimplePrincipal(username));
SecurityContextAssociation.setCredential(password.toCharArray());
They do pretty much all I wanted :)

How to execute a function immediately after authentication

My question is this: With a web application, after performing a login authentication for a protected resource, how can I run some sort of function (in this case, I want to run a function to initialize some user-dependent session-scope variables) BEFORE the web-app redirects to the protected resource.
I am programming a web application using servlets and JSP's, all within the struts framework. I believe I have followed the correct JAAS or J2EE standards for security.
In other words, I have configured the web-application via the web.xml file to redirect all requests for protected material to a login form that asks the user for login information. It then submits to j_Security_check which performs the authentication and authorization before redirecting the user to the protected materials.
So, I need to run a function sometime just after the web application says "yes, this person is who they say they are" and before the web application shoves them at where they want to go.
Hope you can help me. Thanks in advance.
If you use serverside sessions:
Create a servlet filter
In the filter: See if an attribute in the session has been set
If not: Check if user is authenticated and perform your operation if they are. Then set the attribute in the session
Thus, the operation will be executed only once.