Using credentials in Portlets and Servlets

How to use DILIGENT credentials in a Portlet / Servlet

Pre-development Actions

Downloading GridSphere

In order to enable security aspects in your portal, you have first to download from ETICS system the diligent-gridsphere tgz (org.diligentproject.portal.diligent-gridsphere).

Using Credentials API

Available Methods

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ExtendedGSSCredential getCredentials(PortletSession session)

• You should use this method if you want to retrieve the credential from the portlet.
• It returns a grid credential that you should pass to DIS or every other service that you want to use.

ExtendedGSSCredential getCredentials(HttpSession session)

• You should use this method if you want to retrieve the credential from the servlet.
• It returns a grid credential that you should pass to DIS or every other service that you want to use.

String getHttpScheme(String sessionID)

• It takes as parameter the sessionID.
• It returns the schema that the user uses in order to communicate with the portal (http / https).

String getCurrentTab(String sessionID)

• It takes as parameter the sessionID.
• It returns the name of user's current tab.

HashMap<String, String> getUserInfo(String sessionID)

• It takes as parameter the sessionID.
• It returns a HashMap with all the userInfo

String getDN(String sessionID)

• It takes as parameter the sessionID.
• It returns the DN of the user credential.

String getCA(String sessionID)

• It takes as parameter the sessionID.
• It returns the CA of the user credential.

String getCN(String sessionID)

• It takes as parameter the sessionID.
• It returns the CN of the user credential.

Useful Information

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1. The names of the tabs must be in the form of: /diligent/<VO name>/<DL name>. Otherwise the credential which will be retrieved won't be valid.
2. UserInfo class, which is defined in package org.diligentproject.dvos.portal, is a singleton. So, if you want to retrieve the instance of this class, you must call the getInstance() method.

Sample Code

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//Retrieving UserInfo instance:
UserInfo userInfo = UserInfo.getInstance();
//Retrieving current tab info:
String currentTab = userInfo.getCurrentTab(session.getId());
ExtendedGSSCredential credential = null;
try { //Retrieving credential:
    credential = userInfo.getCredentials(session);
}
catch (Exception e) {
    e.printStackTrace();
}
//Initializing DHLSClient:
DISHLSClient.init(System.getProperty("GLOBUS_LOCATION") + "/etc/org_diligentproject_keeperservice_hnm/" + "DISQueries.xml");


Imports

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import org.diligentproject.dvos.portal.UserInfo; //In gridsphere-portal-2.2.jar
import org.diligentproject.informationservice.dishlsclient.impl.DISHLSClient; // In dishlsclient jar-file
import org.gridforum.jgss.ExtendedGSSCredential; // In ws-core libraries


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--Valia 17:42, 25 May 2007 (EEST)