Hi,

I think that the easiest way here is to have an *<input
type="hidden"*field in your form for the username with the retrieved
valued. So that your
username is submitted as well as the password.
Best regards,
Jérôme



2013/9/5 <[email protected]>

> I have had some luck creating a custom web flow action and getting hold of
> the principal using:
>
> TicketGrantingTicket t = (TicketGrantingTicket)
> ticketRegistry.getTicket(WebUtils.getTicketGrantingTicketId(context));
> Authentication authentication = t.getAuthentication();
> Principal principal = authentication.getPrincipal();
>
> Hopefully this is a reasonable thing to do.
> I was thinking, if I create a custom login page for re-authentication
> containing input for just the password, then added my custom action after
> the bindandvalidate state, how could I get my newly retrieved username into
> the credentials ready for the submit action state ?
>
>
> On Thursday, September 5, 2013 9:52:15 AM UTC+1, [email protected]:
>>
>> Hi Jérôme,
>>
>> Thank you for your assistance (and apologies for the delay in my reply).
>> I have managed to add an action into the webflow after renewRequestCheck
>> and before viewLoginForm (note I'm using cas 3.3.1 if it matters).
>> I currently have injected into my new action,
>> CentralAuthenticationService and TicketRegistry and have access to the
>> tgtid using WebUtils.**getTicketGrantingTicketId, but I cant see where
>> to get the username from.
>> Any pointers ?
>>
>> Thank you.
>>
>> On Tuesday, August 27, 2013 7:56:12 AM UTC+1, Jérôme LELEU wrote:
>>>
>>> Hi,
>>>
>>> The CAS server behaves according to what is defined in its webflow :
>>> https://github.com/Jasig/**cas/blob/3.5.x/cas-server-**
>>> core/src/main/java/org/jasig/**cas/web/flow/**
>>> InitialFlowSetupAction.java<https://github.com/Jasig/cas/blob/3.5.x/cas-server-core/src/main/java/org/jasig/cas/web/flow/InitialFlowSetupAction.java>
>>> .
>>>
>>> In this case, we'd like to have a login page not displaying the
>>> "username" filed is the user is already authenticated (just the password
>>> field).
>>>
>>> You need two changes :
>>> - in the webflow, before displaying the login page, add a new expression
>>> (around line 128) to evaluate if the user is already authenticated and his
>>> username (be aware that the TGT id is in the webflow :
>>> https://github.com/Jasig/**cas/blob/3.5.x/cas-server-**
>>> core/src/main/java/org/jasig/**cas/web/flow/**
>>> InitialFlowSetupAction.java<https://github.com/Jasig/cas/blob/3.5.x/cas-server-core/src/main/java/org/jasig/cas/web/flow/InitialFlowSetupAction.java>,
>>> so you would need to query the tickets registry with that)
>>> - in the login page, add the appropriate logic :
>>> https://github.com/Jasig/**cas/blob/3.5.x/cas-server-**
>>> webapp/src/main/webapp/WEB-**INF/view/jsp/default/ui/**casLoginView.jsp<https://github.com/Jasig/cas/blob/3.5.x/cas-server-webapp/src/main/webapp/WEB-INF/view/jsp/default/ui/casLoginView.jsp>
>>> .
>>>
>>> Best regards,
>>> Jérôme
>>>
>>>
>>>
>>>
>>>
>>> 2013/8/22 <[email protected]>
>>>
>>>> Renew does sound like it should renew an existing identity.
>>>> Im afraid im a bit of a newbie when it comes to customising cas. Do you
>>>> have any pointers for where to start ? Any wiki articles ? Or do I need to
>>>> start trawling source code ? Regardless, thank you very much for your help.
>>>>
>>>>
>>>> On Thursday, August 22, 2013 9:32:03 AM UTC+1, Jérôme LELEU wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> There were several discussions about the renew parameter, especially
>>>>> when we wrote the LOA specifications.
>>>>> I'm in favor of blocking new identity when using the renew parameter :
>>>>> it should only be possible to check the password.
>>>>> But we didn't reach any clear agreement on this, so I guess it will
>>>>> stay a customization for now.
>>>>> Best regards,
>>>>> Jérôme
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> 2013/8/22 <[email protected]>
>>>>>
>>>>>> That sounds like exactly what I want, I was hoping there was a native
>>>>>> mechanism to support that and initially wondered if renew was it but I
>>>>>> guess not.
>>>>>>
>>>>>> On Thursday, August 22, 2013 7:26:15 AM UTC+1, Jérôme LELEU wrote:
>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>> What would be the expected behaviour when the user is already
>>>>>>> authenticated and requested to login again ?
>>>>>>> Do you want the login page to have the username already fixed by the
>>>>>>> previous authentication and only the password can be edited ? Because 
>>>>>>> I'm
>>>>>>> pretty sure that this can be easily achieved with a customization.
>>>>>>> Best regards,
>>>>>>> Jérôme
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> 2013/8/21 <[email protected]>
>>>>>>>
>>>>>>>> Thank you very much for the responses. I suspect I didn't explain
>>>>>>>> myself very well. The idea is that the user logs onto the web 
>>>>>>>> application
>>>>>>>> with a username and password through cas. They are then free to use the
>>>>>>>> system. If they attempt to click the "edit my profile" link they are 
>>>>>>>> then
>>>>>>>> asked to provide their password again before they can see that screen 
>>>>>>>> - to
>>>>>>>> mitigate against a user leaving their browser logged in, walking away 
>>>>>>>> and
>>>>>>>> someone sitting down and changing their details. Similar to the way 
>>>>>>>> Amazon
>>>>>>>> deals with editing a profile.
>>>>>>>>
>>>>>>>> I have tried to redirect to login with renew=true when the profile
>>>>>>>> page is requested and indeed authentication is requested but at that 
>>>>>>>> point
>>>>>>>> any valid account seems to work as it is requesting fresh credentials. 
>>>>>>>> I am
>>>>>>>> really only after them entering the password for the logged in account 
>>>>>>>> at
>>>>>>>> that point.
>>>>>>>>
>>>>>>>> Any ideas ?
>>>>>>>>
>>>>>>>> Thanks for any help.
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