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William Gosse
Overriding ServicePreAction throws exception in 6.1 GA2
September 13, 2012 6:29 AM
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William Gosse

Rank: Regular Member

Posts: 105

Join Date: July 4, 2010

Recent Posts

I had an extension that I wrote for 6.0..5 the overrides com.liferay.portal.events.ServicePreAction. I was using this extension the deny access to the control panel for certain users. Here's the code I was using :
 1
 2public class SQServicePreAction extends ServicePreAction {
 3
 4    @Override
 5    protected boolean isViewableGroup(User user, long groupId,
 6            boolean privateLayout, long layoutId, String controlPanelCategory,
 7            PermissionChecker permissionChecker) throws PortalException,
 8            SystemException {
 9
10        boolean isViewable = super.isViewableGroup(user, groupId, privateLayout, layoutId,
11                controlPanelCategory, permissionChecker);
12       
13        if (isViewable) {
14            Group group = GroupLocalServiceUtil.getGroup(groupId);
15            
16            if (group.isControlPanel())
17            {
18                long companyId = group.getCompanyId();
19                long userId = user.getUserId();
20
21                if (SQPortalUtils.isUserAdminUser(companyId, userId))
22                    isViewable = true;
23                else
24                    isViewable = !SQPortalUtils.isUserEnterpriseUser(userId);
25            }
26        }   
27       
28        return isViewable;       
29    }
30
31}


I know that isViewableGroup is now deprecated so I've tried replacing it with something else. It doesn't to matter what I put in the class now because as soon as it deploys I get the following exception:

SEVERE: Servlet.service() for servlet jsp threw exception
java.lang.NullPointerException
...

12:55:11,310 ERROR [http-bio-8080-exec-1][error_jsp:422] User ID null
12:55:11,311 ERROR [http-bio-8080-exec-1][error_jsp:423] Current URL /
12:55:11,311 ERROR [http-bio-8080-exec-1][error_jsp:424] Referer null
12:55:11,312 ERROR [http-bio-8080-exec-1][error_jsp:425] Remote address 127.0.0.1
12:55:11,315 ERROR [http-bio-8080-exec-1][error_jsp:427] javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.NullPointerException
javax.servlet.ServletException: javax.servlet.jsp.JspException: java.lang.NullPointerException
at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:907)
...

Caused by: java.lang.NullPointerException
at com.liferay.taglib.util.ThemeUtil.include(ThemeUtil.java:94)
at com.liferay.taglib.theme.IncludeTag.doEndTag(IncludeTag.java:39)
at org.apache.jsp.html.common.themes.portal_jsp._jspx_meth_liferay_002dtheme_005finclude_005f1(portal_jsp.java:479)
at org.apache.jsp.html.common.themes.portal_jsp._jspService(portal_jsp.java:424)
... 161 more

As soon as I remove servlet.service.events.pre=com.salesquest.portal.events.SQServicePreAction form my portal ext properties file the exception goes away. Can theis class no longer be overwritten for some Any help understanding this issue would be greatly appreciated.
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William Gosse
RE: Overriding ServicePreAction throws exception in 6.1 GA2
September 13, 2012 8:28 AM
Answer

William Gosse

Rank: Regular Member

Posts: 105

Join Date: July 4, 2010

Recent Posts

Ok thanks to the forum I found my answer here: https://www.liferay.com/community/forums/-/message_boards/message/13109956

There is now more then on a pre service action class that need to be listed with the like the following:
servlet.service.events.pre=com.liferay.portal.events.ServicePreAction,com.liferay.portal.events.DeviceServicePreAction,com.liferay.portal.events.ThemeServicePreAction,com.myorg.portal.events.SQServicePreAction

I also change my code it no longer use the deprecated isViewableGroup method. Here's my new code:
 1
 2public class SQServicePreAction extends Action {
 3
 4    public void run(HttpServletRequest request, HttpServletResponse response)
 5            throws ActionException {
 6        try {
 7
 8            ThemeDisplay themeDisplay = (ThemeDisplay) request
 9                    .getAttribute(WebKeys.THEME_DISPLAY);
10            if (GroupLocalServiceUtil.getGroup(
11                    themeDisplay.getLayout().getGroupId()).isControlPanel()) {
12
13                User currentUser = UserServiceUtil.getUserById(themeDisplay
14                        .getUserId());
15
16                if (SQPortalUtils.isUserEnterpriseUser(currentUser.getUserId())) {
17                    throw new PrincipalException("Enterprise User, "
18                            + currentUser.getScreenName()
19                            + ", is not allowed access to the Control Panel.");
20                }
21            }
22
23        } catch (Exception ex) {
24            throw new ActionException(ex);
25        }
26
27    }
28}


I found this approach at: http://java-liferay.blogspot.com/2012/07/hide-and-disable-access-to-liferays-61.html
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