Grouper Users - Open Discussion List

[Monica Crawford <>]

Hi Gary,

Thanks for the help.  I've attached two files. One explains the things 
that should change for the 2.4 servlet deployment descriptor and support 
for jsp 2.0. The other is the 2.4 deployment descriptor taken from the 
grouper-qs that is altered to use 2.4.

Some more details if your interested:
By spec a 2.4 servlet container should support a 2.3 deployment 
descriptor.  Weblogic 9.x will support a 2.3 servlet descriptor just 
fine w/ jstl 1.0 uri references for the <@taglib> jsp refs (the jar file 
is still 1.1).  This works great as long as el is not used in tiles. 
Tiles-el seems to be the main source of pain in weblogic 9.x.

<Thinking out loud here...> things I can think of that might work (yet 
to try) include:
- keep a 2.3 deployment descriptor, but somehow find another mechanism 
besides tiles-el - (maybe use the beanname?)  Is it possible to remove 
all el references from tiles? We still need to test if it is affecting 
all struts-el (html, bean, etc)
- keep a 2.3 deployment descriptor, maybe create a custom tag to 
wrap/resolve the tiles specific el issues before hitting the page.
- use a 2.4/jsp 2.0 environment, need to evaluate the impact.  How many 
grouper users are still on 2.3/1.2 envs? What is the protocol for 
deciding things like this? This may be way out-of-scope but an alternative.

Let me know if there are additional questions.....

Monica


GW Brown, Information Systems and Computing wrote:
> Hi Monica,
>
> I haven't tried getting the Grouper UI to run against servlet 2.4/jsp 
> 2.0 - I have deliberately avoided taking advantage of any new features 
> so that there aren't any backward compatability issues.
>
> I don't have a Weblogic instance to work against, but I'll have a go at 
> setting up the UI for Tomcat servlet 2.4/jsp 2.0 and see what errors 
> occur. If you would send me your 2.4 deployment descriptor that will 
> help me get started.
>
> Regards,
>
> Gary
>
> --On 09 August 2006 17:24 -0500 Monica Crawford <> 
> wrote:
>
> > Hi folks,
> >
> > Is there intended support for Grouper UI running against a Servlet
> > 2.4/JSP 2.0 deployment descriptor?
> >
> > I'm trying to get the Weblogic 9.x (servlet 2.4/jsp 2.0) environment to
> > run grouper-qs and I run into errors starting with template.jsp.  There
> > are a couple of things happening; an infinite loop in the
> > LoginCheckFilter if the document.location.replace("error.do") isn't
> > commented out, and the main issue - EL evaluation in the tiles tag
> > attributes isn't happening.
> >
> > Seeking an answer I find this post
> > http://forums.bea.com/bea/message.jspa?messageID=600020538&tstart=0 and
> > try to convert the grouper-qs ui webapp to use the 2.4 deployment
> > descriptor with some hopeful success but alas keep running into various
> > errors regarding the taglibs on the include.jsp. Even after updating
> > JSTL/Standard jars to 1.1 dtd references, it appears that the taglib
> > definitions in include.jsp aren't being 'included' in subsequent jsps
> > even if I use a dynamic include. Each new thing I 'fix' seems to open a
> > new issue.
> >
> > I'm sure I'm missing something rather simple.  Any ideas for a cure? I
> > can recreate the EL problem with a rather simple webapp, but can't
> > recreate the include.jsp taglib issue.  Let me know what additional info
> > you might need to further investigate.
> >
> > --
---------------------------------------------------
**web.xml**

change from:
<!DOCTYPE web-app PUBLIC 
          "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" 
"http://java.sun.com/dtd/web-app_2_3.dtd";>
<web-app>
to:
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"; 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
     xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"; version="2.4">
<jsp-config><taglib> additions for custom tag only

remove all: 
<taglib> references for jstl and struts taglib declarations (point directly 
to uri listed in apache standards 1.1 and Struts 1.2.x .tld files)

add the 2.4 taglib referece of:
<jsp-config>
        <taglib>
        
<taglib-uri>http://middleware.internet2.edu/dir/groups/grouper</taglib-uri>
        <taglib-location>/WEB-INF/grouper-el.tld</taglib-location>
        </taglib>
</jsp-config>

---------------------------------------------------
**WEB-INF/*.tld**
rename all JSTL/Struts tld files to .x to remove possible interference with 
.dtd listings in .jar files. Or remove all the non-custom .tld files (keep 
the grouper one)

---------------------------------------------------
**WEB-INF/lib**
remove all the jstl/standard 1.0 jar files 
add jstl/standard.jar 1.1.
remove the struts-el.jar 

---------------------------------------------------
**struts-config.xml**
upgraded dtd to match the 1.2.4 jar version:
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts 
Configuration 1.2//EN" "http://struts.apache.org/dtds/struts-config_1_2.dtd";>

---------------------------------------------------
**grouper-el.tld**
change taglib to point to jsp 2.0 taglib schema:
<taglib xmlns="http://java.sun.com/xml/ns/javaee";
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
http://java.sun.com/xml/ns/j2ee/web-jsptaglibrary_2_0.xsd";
    version="2.0">
remove:
<taglibversion> and <jspversion> 
add:
<tlib-version>1.0</tlib-version>
change:
<shortname> to <short-name>

---------------------------------------------------
**include.jsp**
remove all jstl 1.0 and old struts 1.1x uri references
add all jstl 1.1 references and struts 1.2.x uri references (no tiles-el): 
<%@ taglib uri="http://java.sun.com/jsp/jstl/core"; prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/xml"; prefix="x"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/fmt"; prefix="fmt"%>        
<%@ taglib uri="http://struts.apache.org/tags-bean";     prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-logic"; prefix="logic"%>
<%@ taglib uri="http://struts.apache.org/tags-html";     prefix="html"%>
<%@ taglib uri="http://struts.apache.org/tags-tiles"; prefix="tiles"%>

---------------------------------------------------
**template.jsp**
comment out document.location.value (error.do ) at end of file.

---------------------------------------------------
**ELTileRecordTag**
remove reference to EL library (struts-el lib is gone for JSP 2.0): 
import org.apache.strutsel.taglib.utils.EvalHelper; and evaluateExpressions();


<?xml version="1.0" encoding="ISO-8859-1"?>


<web-app xmlns="http://java.sun.com/xml/ns/j2ee";
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd";
	version="2.4">
	<filter>
		<filter-name>Login check</filter-name>
		<filter-class>
			edu.internet2.middleware.grouper.ui.LoginCheckFilter
		</filter-class>
		<init-param>
			<param-name>failureUrl</param-name>
			<param-value>/</param-value>
		</init-param>
		<init-param>
			<param-name>ignore</param-name>
			<param-value>
				:/populateIndex.do:/callLogin.do:/error.do:/logout.do:
			</param-value>
		</init-param>
	</filter>
	<filter>
		<filter-name>Caller page</filter-name>
		<filter-class>
			edu.internet2.middleware.grouper.ui.CallerPageFilter
		</filter-class>
	</filter>
	<filter-mapping>
		<filter-name>Caller page</filter-name>
		<url-pattern>/gotoCallerPage</url-pattern>
	</filter-mapping>
	<filter-mapping>
		<filter-name>Login check</filter-name>
		<url-pattern>*.do</url-pattern>
	</filter-mapping>
	<listener>
		<listener-class>
			edu.internet2.middleware.grouper.ui.GrouperSessionAttributeListener
		</listener-class>
	</listener>
	<servlet>
		<servlet-name>action</servlet-name>
		<servlet-class>
			org.apache.struts.action.ActionServlet
		</servlet-class>
		<init-param>
			<param-name>config</param-name>
			<param-value>/WEB-INF/struts-config.xml</param-value>
		</init-param>
		<load-on-startup>2</load-on-startup>
	</servlet>
	<servlet-mapping>
		<servlet-name>action</servlet-name>
		<url-pattern>*.do</url-pattern>
	</servlet-mapping>
	<error-page>
		<error-code>401</error-code>
		<location>/401.do</location>
	</error-page>
	<error-page>
		<exception-type>java.lang.Exception</exception-type>
		<location>/error.do</location>
	</error-page>
	<jsp-config>
		<taglib>
 			<taglib-uri>http://middleware.internet2.edu/dir/groups/grouper</taglib-uri>
    		<taglib-location>/WEB-INF/grouper-el.tld</taglib-location>
		</taglib>
	</jsp-config>
	<security-constraint>
		<web-resource-collection>
			<web-resource-name>Tomcat login</web-resource-name>
			<url-pattern>/login.do</url-pattern>
		</web-resource-collection>
		<auth-constraint>
			<!-- NOTE:  This role is not present in the default users file -->
			<role-name>grouper_user</role-name>
		</auth-constraint>
	</security-constraint>

	<!-- Define the Login Configuration for this Application -->
	<login-config>
		<auth-method>BASIC</auth-method>
		<realm-name>Grouper Application</realm-name>
	</login-config>

	<!-- Security roles referenced by this web application -->
	<security-role>
		<description>
			The role that is required to log in to the Manager
			Application
		</description>
		<role-name>grouper_user</role-name>
	</security-role>
</web-app>