Package net.anotheria.anosite.shared.presentation.filter

Class IPFilter

java.lang.Object

net.anotheria.anosite.shared.presentation.filter.IPFilter

All Implemented Interfaces:

jakarta.servlet.Filter

public class IPFilter
extends Object
implements jakarta.servlet.Filter

The filter which performs request's IP through allowance/restriction IP filtering rules that are loaded from the CMS (see CSM SiteConfig.FilteredIP). In case when an IP at the same time is allowed and restricted allowance has bigger priority. For restricted IPs is sent response with redirection on maintenance that configured via "maintenancePage" filter parameter in web.xml If "maintenancePage" parameter is not set then "403" response is returned. By default every application resource is in the restricted zone (zone for which IP filtering is performing) that can be changed by describing restricted resources by paths and/or by extensions. To describe restricted zone are used two initial filter parameters in web.xml:

1. restrictedPaths with value as comma separated list of paths without leading slash symbol. E.g "cms,mui,admintools" restricts access to http://foo.bar/cms/index, http://foo.bar/mui/showAllProducers and so on
2. restrictedExtensions with value as comma separated list of extensions without leading dot symbol. E.g. "html,action,js" restricts access to http://foo.bar/home.html, http://foo.bar/login.action and so on

Everything else doesn't target to restricted zone.

Author:

dmetelin

Constructor Summary

Constructors

Constructor	Description
IPFilter()

Method Summary

Modifier and Type	Method	Description
void	destroy()
void	doFilter(jakarta.servlet.ServletRequest sreq, jakarta.servlet.ServletResponse sres, jakarta.servlet.FilterChain chain)
protected String	getMaintenancePageURL(jakarta.servlet.http.HttpServletRequest req)
void	init(jakarta.servlet.FilterConfig config)
protected boolean	isRestrictedZoneReq(jakarta.servlet.http.HttpServletRequest req)	Checks whether or not request came to restricted zone

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IPFilter

public IPFilter()

Method Detail

init

public void init(jakarta.servlet.FilterConfig config)
          throws jakarta.servlet.ServletException

Specified by:

init in interface jakarta.servlet.Filter

Throws:

jakarta.servlet.ServletException

destroy

public void destroy()

Specified by:

destroy in interface jakarta.servlet.Filter

doFilter

public void doFilter(jakarta.servlet.ServletRequest sreq,
                     jakarta.servlet.ServletResponse sres,
                     jakarta.servlet.FilterChain chain)
              throws IOException,
                     jakarta.servlet.ServletException

Specified by:

doFilter in interface jakarta.servlet.Filter

Throws:

IOException

jakarta.servlet.ServletException

getMaintenancePageURL

protected String getMaintenancePageURL(jakarta.servlet.http.HttpServletRequest req)

Parameters:

req - TODO dummy comment for javadoc.

Returns:

URL to maintenance page

isRestrictedZoneReq

protected boolean isRestrictedZoneReq(jakarta.servlet.http.HttpServletRequest req)

Checks whether or not request came to restricted zone

Parameters:

req - request

Returns:

true if request to restricted zone