Package alpine.filters

Class ClickjackingFilter

java.lang.Object

alpine.filters.ClickjackingFilter

All Implemented Interfaces:

javax.servlet.Filter

public final class ClickjackingFilter
extends Object
implements javax.servlet.Filter

Implements HTTP Header Field X-Frame-Options (RFC 7034).

This filter is configured via the applications web.xml.

     <init-param>
         <param-name>mode</param-name>
         <param-value>DENY</param-value>
     </init-param>
 

An example implementation in web.xml:

 <filter>
     <filter-name>ClickjackingFilter</filter-name>
     <filter-class>alpine.filters.ClickjackingFilter</filter-class>
     <init-param>
         <param-name>mode</param-name>
         <param-value>DENY</param-value>
     </init-param>
 </filter>
 <filter-mapping>
     <filter-name>ClickjackingFilter</filter-name>
     <url-pattern>/*</url-pattern>
 </filter-mapping>
 

Valid options are DENY, SAMEORIGIN, or ALLOW-FROM. Use of ALLOW-FROM requires an additional 'uri' parameter to be specified.

Since:

1.0.0

Author:

Steve Springett

Constructor Summary

Constructors

Constructor	Description
ClickjackingFilter()

Method Summary

Modifier and Type	Method	Description
void	destroy()
void	doFilter(javax.servlet.ServletRequest req, javax.servlet.ServletResponse res, javax.servlet.FilterChain chain)
void	init(javax.servlet.FilterConfig filterConfig)

Methods inherited from class java.lang.Object

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

Constructor Detail

ClickjackingFilter

public ClickjackingFilter()

Method Detail

init

public void init(javax.servlet.FilterConfig filterConfig)

Specified by:

init in interface javax.servlet.Filter

doFilter

public void doFilter(javax.servlet.ServletRequest req,
                     javax.servlet.ServletResponse res,
                     javax.servlet.FilterChain chain)
              throws IOException,
                     javax.servlet.ServletException

Specified by:

doFilter in interface javax.servlet.Filter

Throws:

IOException

javax.servlet.ServletException

destroy

public void destroy()

Specified by:

destroy in interface javax.servlet.Filter