Login functinality into a web app. How?

The database to use in my app has several users with different roles.I wan someone to be able to use the j2ee app as a user of the database( some must not have some rights), but when I do the app the beans are generated based on a predefined connection.How can I edit that connection programaticaly so that i obtain the functionality implemented by the database? I noticed that login info is kept in content.xml. Is there a way to deal this file from a bean?
ps: I couldn't find anything relevant on the web... maybe I don't know what to search...

You're storing a reference to the session, or the login information, or something, in an instance variable of the servlet or whatever it is that does the logging in.

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Login prompt appears for web app when sql db is not on same server as WebAp

Hi,
I am deploying a VS2005 web application on a server (which has crytalReportsviewer); lets call that server A. The database the crystal reports access are on a different server, server B. In this scenario, when I run the web application, and try to bring up the reports on the web page, I get login prompt. Even if I provide valid login credentials (I have set up a user for this purpose the behavior is erratic; for some reports the report is displayed and for others it errors out with 'unknown error' message.
If I put the sql db on the same server, it works fine.
I use the crystal reports application to update the database source. When I do this, I use Ole db connection and set the 'integrated security' to true. But setting the integrated security to true does not bypass the login screen on the web app.
My question is, how do I set up the report database parameters (connection string etc) so that the user of the web application does not have to go through the login screen when the web application and the sql db does not reside on the same server.
Thanks.

That sound like a [Double-Hop|http://blogs.msdn.com/knowledgecast/archive/2007/01/31/the-double-hop-problem.aspx] issue.
You'd install and configure Kerberos to hop over the credentials - see post: SQL Server 2005 integrated security.
Sincerely,
Ted Ueda

Possible to have two login configs in same web app?

Sorry for not having tried this first, my server and webapp are in a state
of flux at this moment, but I wanted to see what the consensus is out there,
not just whether I can or cannot make something work quickly.
If I have two types of things that might be called in my Web App (WAR) in
different ways (eg, browser accessing via HTTP by users that want to login
via pretty forms, and SOAP clients that may access functionality through the
same servlets (but with alternate Servlet Path Info after the servlet name
in the URL)), is there ANY way I can have multiple login configs, each tied
to a different security constraint within that web app?
In other words, with a servlet of /frazzleblitz and security constraints
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<web-resource-collection>
<web-resource-name>Foo</web-resource-name>
<url-pattern>/frazzleblitz/doFooBar</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>FoobarBrowserUsers</role-name>
</auth-constraint>
</security-constraint>
and the SOAP constraint (for all users of incoming SOAP requests):
<security-constraint>
<web-resource-collection>
<web-resource-name>Foo</web-resource-name>
<url-pattern>/frazzleblitz/doFooBar</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>FoobarBrowserUsers</role-name>
</auth-constraint>
</security-constraint>
where my frazzleblitz controller knows whether the incoming request is
browser vs SOAP based by the path info after the servlet name
Can I associate the first security constraint with a FORM based login
config, and the second security constraint with a BASIC AUTH login config
since I could in theory require SOAP clients to send in credentials in a
HTTP BasicAuth header, but I can't expect a SOAP client to be HTTP
Redirected to a login form and then to enter the right credentials into a
user type form and then be redirected back to an app...
Seems to me the J2EE Security spec is really lacking in the area of
programmatic authentication (allowing my SOAP code to get credentials out of
the request envelope and call an API to login myself). Yeah, WebLogic has
the ServletAuthentication weak() API, but these apps need to be J2EE
compliant and work across J2EE servers... Anybody know of any improvements
coming in the J2EE security space to address such functionality needs?
Thanks in advance
Mike

Sorry, hit send accidentally before finishing the second security
constraint - I've fixed it up below to reflect what I meant...
"Mike" <[email protected]> wrote in message
news:[email protected]...
Sorry for not having tried this first, my server and webapp are in a state
of flux at this moment, but I wanted to see what the consensus is outthere,
not just whether I can or cannot make something work quickly.
If I have two types of things that might be called in my Web App (WAR) in
different ways (eg, browser accessing via HTTP by users that want to login
via pretty forms, and SOAP clients that may access functionality throughthe
same servlets (but with alternate Servlet Path Info after the servlet name
in the URL)), is there ANY way I can have multiple login configs, eachtied
to a different security constraint within that web app?
In other words, with a servlet of /frazzleblitz and security constraints
like:
<security-constraint>
<web-resource-collection>
<web-resource-name>Foo</web-resource-name>
<url-pattern>/frazzleblitz/doFooBar</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>FoobarBrowserUsers</role-name>
</auth-constraint>
</security-constraint>
and the SOAP constraint (for all users of incoming SOAP requests):
<security-constraint>
<web-resource-collection>
<web-resource-name>Bar</web-resource-name>
<url-pattern>/frazzleblitz/doSOAPRequest</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>SOAPUsers</role-name>
</auth-constraint>
</security-constraint>
where my frazzleblitz controller knows whether the incoming request is
browser vs SOAP based by the path info after the servlet name
Can I associate the first security constraint with a FORM based login
config, and the second security constraint with a BASIC AUTH login config
since I could in theory require SOAP clients to send in credentials in a
HTTP BasicAuth header, but I can't expect a SOAP client to be HTTP
Redirected to a login form and then to enter the right credentials into a
user type form and then be redirected back to an app...
Seems to me the J2EE Security spec is really lacking in the area of
programmatic authentication (allowing my SOAP code to get credentials outof
the request envelope and call an API to login myself). Yeah, WebLogic has
the ServletAuthentication weak() API, but these apps need to be J2EE
compliant and work across J2EE servers... Anybody know of anyimprovements
coming in the J2EE security space to address such functionality needs?
Thanks in advance
Mike

Office 2013 - SharePoint Web App: How can I link a subform on two Master/Child controls?

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Login functinality into a web app. How?

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