Filtering URL via tomcat

[Ravi Sharma]

Hi All,
Please help me for this problem, i am not able to get to the root of the
problem.

My site have few open/free pages which can be accessed by anyone/guests and
few only for registered users. So you can access those pages only by login
to the site

http://www.mysiste.com/audio/abc.html (anyone/guests can see this page)
http://www.mysiste.com/audio/app/download/abc.html (only logged in user can
see this page)

I am using tomcat 5.5 and appache httpd server 2.2.

the root of my site reside in appache httpd server
so i have folder structure like
mysite/public_html/audio
mysite/public_html/app/audio/download

in my httpd conf i have something like this
JkMount /app/audio/download/* ajp13w
..
..
..
and mysite.com is poiniting to mysite/public_html


*app* is my tomcat application context

and in tomcat web.xml one Filter is listning to url
<filter>
        <filter-name>DownLoadSecurityFilter</filter-name>
        <filter-class>com.app.security.SecurityFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>DownLoadSecurityFilter</filter-name>
        <url-pattern>/audio/download/*</url-pattern>
    </filter-mapping>

So all the pages will be served by apache httpd except the pages which are
like app/audio/download.

So now when somone try to access app/audio/download/some.html the request
passed to tomcat, in turns filter check this url and if user is not logged
in then login screen comes up.
User login and proceed and login screen automcatically forward the request
to the page which was requested app/audio/download/some.html, but here i get
this tomcat error

*Type* Status report

*message* */app/audio/download/some.html*

*description* *The requested resource (/app/audio/download/some.html) is not
available.*

these html pages are static pages and exists in apache http home dir of
websites
public_html/app/audio/download/some.html

but then i thought may be it need to exists in tomcat web apps too., so
under web-apps/app dir i created audio link to audio directory under
public_html

so now webapps dir has following link
webapps/app/audio -> /home/mysite/public_html/audio

so basically if i try to access any thing with
http://www.mysite.com/app/audio, it should be served from audio  dir in
webapps which in turn audio dir from appache httpd.

But its not working. :(

I dont know whats wrong.

following is my java filter class

    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain chain)
    throws IOException, ServletException {
        try
        {
            checkSecurity(request);
        }
        catch(UserNotLoggedIn ex)
        {
            httpResponse.sendRedirect(httpRequest.getContextPath() +
LOGINURL +"?URL=" + targetUrl);
            return;
        }
        catch(OperationNotAllowedForUser ex)
        {
            httpResponse.sendRedirect(httpRequest.getContextPath() +
DENIENDURL );
            return;
        }
        chain.doFilter(request, response);

    doAfterProcessing(request, response);

}


    private void doAfterProcessing(ServletRequest request, ServletResponse
response)
    throws IOException, ServletException {
    }

Thanks in advance
Ravi