From aa60ad1c38ea3501591e2350b9d95637865f95f1 Mon Sep 17 00:00:00 2001
From: Massimiliano Assante <massimiliano.assante@isti.cnr.it>
Date: Thu, 12 Jan 2017 10:52:20 +0000
Subject: [PATCH] added method for getting the user form PortalDelegateServlets

git-svn-id: https://svn.research-infrastructures.eu/d4science/gcube/trunk/portal/portal-manager@141523 82a268e6-3cf1-43bd-a215-b396298e98cf
---
 .../gcube/common/portal/PortalContext.java    | 31 ++++++++++++++++++-
 1 file changed, 30 insertions(+), 1 deletion(-)

diff --git a/src/main/java/org/gcube/common/portal/PortalContext.java b/src/main/java/org/gcube/common/portal/PortalContext.java
index 1a7e9c7..f897d67 100644
--- a/src/main/java/org/gcube/common/portal/PortalContext.java
+++ b/src/main/java/org/gcube/common/portal/PortalContext.java
@@ -26,6 +26,8 @@ import org.gcube.vomanagement.usermanagement.model.GCubeUser;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import com.liferay.portal.kernel.exception.PortalException;
+import com.liferay.portal.kernel.exception.SystemException;
 import com.liferay.portal.model.Group;
 import com.liferay.portal.model.VirtualHost;
 import com.liferay.portal.service.CompanyLocalServiceUtil;
@@ -82,7 +84,7 @@ public class PortalContext {
 	private static PortalContext singleton = new PortalContext();
 
 	private UserManager userManager;
-	
+
 	private String infra;
 	private String vos;
 
@@ -169,6 +171,33 @@ public class PortalContext {
 		}
 		return null;
 	}
+	/**
+	 * <p>
+	 * Please note that this method works with Liferay's PortalDelegateServlet feature {@link com.liferay.portal.kernel.servlet.PortalDelegateServlet}.
+	 * For documentation on PortalDelegateServlet @see <a href="https://wiki.gcube-system.org/gcube/Portal_Context#Liferay.27s_PortalDelegateServlet_.28Custom_servlets_running_in_the_ROOT_context.29">gCube WIKI PortalDelegateServlet page</a>
+	 * </p>
+	 * 
+	 * @param httpServletRequest the {@link HttpServletRequest} object
+	 * @return the current user, or <code>null</code> if a current user could not be found
+	 * @see {@link GCubeUser}
+	 */
+	public GCubeUser getCurrentUserPortalDelegateServlet(HttpServletRequest httpServletRequest) {
+		try {
+			if (PortalUtil.getUser(httpServletRequest) != null) 	{
+				long userId = PortalUtil.getUser(httpServletRequest).getUserId();
+				return userManager.getUserById(userId);
+			}
+			else {
+				//the user is not logged in or session expired
+				_log.debug("Can't find the user,  session expired or your not using ");
+				return null;
+			}
+		} catch (PortalException | SystemException | UserManagementSystemException | UserRetrievalFault e) {
+			_log.error("Could not read the current userid, either session expired or user not logged in, exception: " + e.getMessage());
+			e.printStackTrace();
+		}
+		return null;
+	}
 	/**
 	 * @param scopeGroupId the liferay groupid number (as String) of the VRE/VO
 	 * @return the scope (context)