org.vaadin.spring.security.shared

Class AbstractVaadinAuthenticationTargetUrlRequestHandler

java.lang.Object

org.vaadin.spring.security.shared.AbstractVaadinAuthenticationTargetUrlRequestHandler

Direct Known Subclasses:

VaadinUrlAuthenticationSuccessHandler

public abstract class AbstractVaadinAuthenticationTargetUrlRequestHandler
extends Object

Base class containing the logic used by strategies which handle redirection to a URL and are passed an Authentication object as part of the contract. See AuthenticationSuccessHandler and LogoutSuccessHandler, for example.

Uses the following logic sequence to determine how it should handle the forward/redirect

• If the alwaysUseDefaultTargetUrl property is set to true, the defaultTargetUrl property will be used for the destination.
• If a parameter matching the value of targetUrlParameter has been set on the request, the value will be used as the destination. If you are enabling this functionality, then you should ensure that the parameter cannot be used by an attacker to redirect the user to a malicious site (by clicking on a URL with the parameter included, for example). Typically it would be used when the parameter is included in the login form and submitted with the username and password.
• If the useReferer property is set, the "Referer" HTTP header value will be used, if present.
• As a fallback option, the defaultTargetUrl value will be used.

Author:

Luke Taylor (original author source code Spring-Security), Gert-Jan Timmer (gjr.timmer@gmail.com) (Vaadin specific changes), Petter Holmström (petter@vaadin.com)

Field Summary

Fields

Modifier and Type	Field and Description
protected HttpService	http
protected VaadinRedirectStrategy	redirectStrategy

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractVaadinAuthenticationTargetUrlRequestHandler(HttpService http, VaadinRedirectStrategy redirectStrategy)

Method Summary

Modifier and Type	Method and Description
protected String	determineTargetUrl(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Builds the target URL according to the logic defined in the main class Javadoc.
protected String	getDefaultTargetUrl() Supplies the default target Url that will be used if no saved request is found or the alwaysUseDefaultTargetUrl property is set to true.
protected String	getTargetUrlParameter()
protected void	handle(Authentication authentication) Invokes the configured RedirectStrategy with the URL returned by the determineTargetUrl method.
protected boolean	isAlwaysUseDefaultTargetUrl()
void	setAlwaysUseDefaultTargetUrl(boolean alwaysUseDefaultTargetUrl) If true, will always redirect to the value of defaultTargetUrl (defaults to false).
void	setDefaultTargetUrl(String defaultTargetUrl) Supplies the default target Url that will be used if no saved request is found in the session, or the alwaysUseDefaultTargetUrl property is set to true.
void	setTargetUrlParameter(String targetUrlParameter) If this property is set, the current request will be checked for this a parameter with this name and the value used as the target URL if present.
void	setUseReferer(boolean useReferer) If set to true the Referer header will be used (if available).

Methods inherited from class java.lang.Object

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

Field Detail

redirectStrategy

protected final VaadinRedirectStrategy redirectStrategy

http

protected final HttpService http

Constructor Detail

AbstractVaadinAuthenticationTargetUrlRequestHandler

protected AbstractVaadinAuthenticationTargetUrlRequestHandler(HttpService http,
                                                              VaadinRedirectStrategy redirectStrategy)

Method Detail

handle

protected void handle(Authentication authentication)
               throws IOException,
                      javax.servlet.ServletException

Invokes the configured RedirectStrategy with the URL returned by the determineTargetUrl method.

The redirect will not be performed if the response has already been committed.

Throws:

IOException

javax.servlet.ServletException

determineTargetUrl

protected String determineTargetUrl(javax.servlet.http.HttpServletRequest request,
                                    javax.servlet.http.HttpServletResponse response)

Builds the target URL according to the logic defined in the main class Javadoc.

getDefaultTargetUrl

protected final String getDefaultTargetUrl()

Supplies the default target Url that will be used if no saved request is found or the alwaysUseDefaultTargetUrl property is set to true. If not set, defaults to /.

Returns:

the defaultTargetUrl property

setDefaultTargetUrl

public void setDefaultTargetUrl(String defaultTargetUrl)

Supplies the default target Url that will be used if no saved request is found in the session, or the alwaysUseDefaultTargetUrl property is set to true. If not set, defaults to /. It will be treated as relative to the web-app's context path, and should include the leading /. Alternatively, inclusion of a scheme name (such as "http://" or "https://") as the prefix will denote a fully-qualified URL and this is also supported.

Parameters:

defaultTargetUrl -

isAlwaysUseDefaultTargetUrl

protected boolean isAlwaysUseDefaultTargetUrl()

setAlwaysUseDefaultTargetUrl

public void setAlwaysUseDefaultTargetUrl(boolean alwaysUseDefaultTargetUrl)

If true, will always redirect to the value of defaultTargetUrl (defaults to false).

getTargetUrlParameter

protected String getTargetUrlParameter()

setTargetUrlParameter

public void setTargetUrlParameter(String targetUrlParameter)

If this property is set, the current request will be checked for this a parameter with this name and the value used as the target URL if present.

Parameters:

targetUrlParameter - the name of the parameter containing the encoded target URL. Defaults to null.

setUseReferer

public void setUseReferer(boolean useReferer)

If set to true the Referer header will be used (if available). Defaults to false.