I have configured CAS(v4.0.0) on Apache Tomcat and have multiple clients based on Java, Python and PHP.
What I want to achieve is when I logout from any one application and gets redirected to cas/logout, I want a popup to be opened with all the applications that particular user is logged in with and asks whether you want to log out from every application or not.
I am following the official documentation
http://jasig.github.io/cas/4.2.x/installation/Logout-Single-Signout.html
and found out Single Logout Per Service which allows me to control single logout behavior individually and I can control whether to allow a particular service to use Back Channel or Front Channel or turned off for that application but what I want to achieve is this -
1.Logging out all applications both from CAS and from browser dynamically on button click
2.Logging out a single application from CAS dynamically on button click, with all other applications having their sessions maintained on CAS server and on browser too.
3.Configuration to be changed in PHP and Python clients to handle the logout callback from CAS server.
Any help would be highly appreciated.
Logging out all applications both from CAS and from browser dynamically on button click
invoke /cas/logout. If SLO is turned on, all applications will receive a notification to logout. CAS will logout as well.
Logging out a single application from CAS dynamically on button click, with all other applications having their sessions maintained on CAS server and on browser too.
Well, you go to your application and you log out from the application. Why do you want to involve CAS? CAS is not responsible for maintaining your app and how it works. /app/logout should do the job.
Configuration to be changed in PHP and Python clients to handle the logout callback from CAS server.
You'll need to figure out if your clients support CAS SLO. If they do, they will proceed the SLO notification and kill the app session.
Related
I want to use Keycloak as an identity provider in our company.
I have defined one Realm with three clients (I have three applications and I have defined a client for each application)
I want to separate the process of login and logout for each application. For example when I login into app1 and app2 and app3, and then logout from app1, the app2 and app3 remain logged in.
In StackOverflow I found some solution to separate the login process for each application as follow:
1. in admin console, go to Authentication
2. make a copy of Browser flow
3. in this new flow, disable or delete Cookie
4. go to Clients -> (your client) -> Authentication Flow Overrides, change Browser Flow to your new flow, click Save."
How to force login per client with keycloak (¿best practice?)
But this solution is not working for making the logout process independent for each application(which means I want to disable the SSO feature in Keycloak). Is there any way to make it possible?
I would enable Direct Access Grants on the client level only (Standard Flow will be disabled), so applications will have to use direct grant flow. No IdP sessions in the user browser will be created in this case, so no SSO will be used.
I am using Keycloak as the OP of a single sign-on(SSO) platform. I already connected two of my web applications to Keycloak for the single sign on function to work.
Also, I have already made one app when logging out will be redirected to Keycloak authentication server. But I want my other app to also logout when the first one logs out(SLO function). What configurations do I have to do for my 2nd app to make this happen?
Thank you for your help =)
I managed to make the single logout to work, it seems that you just have to set the URL of your web app in the Admin URL(inside Keycloak command console, under Clients).
I turned on security authentication in my orbeon app and now I log in remotely to the app via rest api (I send post request on url https://localhost:8444/orbeon/j_security_check).
Now I want to logout from my app but I don't know where to send the request.
I would check what happen (what http request is issued) after I click logout button but there is no logout button in orbeon.
All I found in documentation is this:
<p:processor name="oxf:session-invalidator"/>
but I have no idea how to use it.
Please help
Since you mention j_security_check, I imagine that you've setup FORM-based authentication in Orbeon Forms' web.xml. Note that you're here in pure "servlet territory"; there isn't much of this that is specific to the Orbeon Forms web app in particular. Since you're using FORM-based authentication, the server knows who you are after you logged in because the browser sends the JSESSIONID cookie Tomcat set when you logged in. To logout, you want to tell Tomcat "invalidate that session". To do so:
The simplest way is most likely to write a JSP that calls session.invalidate().
If you're already doing things with XPL within Orbeon Forms, you can write an XPL file that calls the <p:processor name="oxf:session-invalidator"/> and hook that XPL to a URL through the page flow.
I am beginner in using CAS and i'm using it in one of my project to use its Single Sign On services. Till now i have implemented Single sign on, I have one JAVA client and a PHP Client. But for using Single Sign Out functionality i configured my running CAS according to CAS documentation. I have done all the changes in the deployerConfigContext.xml of my working CAS. My CAS is up running, but on logging out it doesn't show any SAML logout request. I'm using Official PHP Client and Java Client made by me. I think it may be due to these lines which i'm not able to configure it in my Client side.
The way the notification is done (back or front channel) is configured at a service level through the logoutType property. This value is set to LogoutType.BACK_CHANNEL by default.
I'm not able to understand by this line where actually i had to set the Logouttype to BACK_CHANNEL, if its my Client then why is it that it is set to BACK_CHANNEL by default as a Client can be made by anyone.
Any help is highly appreciated.
Thanks in Advance.
Take a look at the jasig documentation: http://jasig.github.io/cas/development/installation/Logout-Single-Signout.html
When a CAS session ends, it notifies each of the services that the SSO
session is no longer valid, and that relying parties need to
invalidate their own session.
This can happen in two ways:
CAS sends an HTTP POST message directly to the service ( back channel communication): this is the traditional way of performing
notification to the service.
CAS redirects (HTTP 302) to the service with a message and a RelayState parameter (front channel communication): This feature is
inspired by SAML SLO, and is needed if the client application is
composed of several servers and use session affinity. The expected
behaviour of the CAS client is to invalidate the application web
session and redirect back to the CAS server with the RelayState
parameter.
And the important part:
Usage Warning!
Front-channel SLO at this point is still experimental.
So your SSO server sends a request to the application directly. The authenticator recognizes that this request is a special one and logouts the referenced user.
Update:
Take a look at the following links:
https://wiki.jasig.org/display/casum/single+sign+out
https://github.com/Jasig/cas/blob/6c3df3a5f42d2d8b771ba773aeda3ba5a4c525e3/cas-server-webapp/src/main/webapp/WEB-INF/spring-configuration/applicationContext.xml
https://github.com/Jasig/cas/blob/6c3df3a5f42d2d8b771ba773aeda3ba5a4c525e3/cas-server-core/src/main/java/org/jasig/cas/logout/LogoutManagerImpl.java
Did you accidantly remove or overwrite your logoutManager declaration in your applicationContext? Is there an logoutManager bean in your running spring context?
I would start by setting break points in the handleLogoutForSloService, performBackChannelLogout and performLogout methods of LogoutManagerImpl.java.
Are they beeing called?
Can you step through them?
Is performBackChannelLogout called?
Is this.httpClient.sendMessageToEndPoint(msg) in performBackChannelLogout successful?
If you are logged on to 2 services, performBackChannelLogout should be called twice with both service urls.
I'm currently making tests with the CAS server 3.5.2 and I'm facing
problems with the logout.
My knowledge in these topics is limited and I don't manage to go further on
that point.
I installed a CAS server and I've got 2 instances of the same java
application that point to that CAS server (appologize if I don't use the
adecuates terms).
So, when I access to the protected resources of my client aplication, I'm
redirected to the CAS login page, I check in my DB if credentials are ok
and then I access the resource. Then, if I access to the same protected
resource from the second instance of the client application I'm not
redirected to login page. That's perfect.
The problem is situated in the logout. To do so, I first execute a
session.invalidate() and access to the CAS logout page. It's ok because,
from the application from which I logged out, I must login again to access
the protected resources. On the other side, the second application remains
connected and I can access the protected resources without login again.
Well, I know that the session.invalidate() is local to the first
application but I thought that CAS server would have "broadcasted" the
desconnexion to the other application but no.
Is there somebody who can give me experience feedback for the single sing
out topic ?
First make sure that SSO is enabled in the CAS properties file, if not make sure the SSO Listener is enabled in the clients.
If they are enabled then my guess would be the issue is in either the LogoutManagerImpl.java or SamlCompliantLogoutMessageCreator.java files.
The SSO in CAS is performed through the back-channel by transmitting a SAML XML message.
I had an issue with the SSO function last year only to find out that the XML message being broadcasted had an error that prevented it from being parsed.
Finally I solved...
In web.xml, the order of filters is important. Filters for Single-sign out must be placed at the begining.
See that section https://wiki.jasig.org/display/CASC/CAS+Client+for+Java+3.1#CASClientforJava3.1-OrderofRequiredFilters