Package org.keycloak.services.util

Class BrowserHistoryHelper

java.lang.Object

org.keycloak.services.util.BrowserHistoryHelper

public abstract class BrowserHistoryHelper
extends Object

The point of this is to improve experience of browser history (back/forward/refresh buttons), but ensure there is no more redirects then necessary. Ideally we want to: - Remove all POST requests from browser history, because browsers don't automatically re-send them when click "back" button. POSTS in history causes unfriendly dialogs and browser "Page is expired" pages. - Keep the browser URL to match the flow and execution from authentication session. This means that browser refresh works fine and show us the correct form. - Avoid redirects. This is possible with javascript based approach (JavascriptHistoryReplace). The RedirectAfterPostHelper requires one redirect after POST, but works even on browser without javascript and on old browsers where "history.replaceState" is unsupported.

Author:

Marek Posolda

Field Summary

Fields

Modifier and Type	Field	Description
protected static org.jboss.logging.Logger	logger
static String	SHOULD_UPDATE_BROWSER_HISTORY

Constructor Summary

Constructors

Constructor	Description
BrowserHistoryHelper()

Method Summary

Modifier and Type	Method	Description
static BrowserHistoryHelper	getInstance()
abstract javax.ws.rs.core.Response	loadSavedResponse(KeycloakSession session, AuthenticationSessionModel authSession)
abstract javax.ws.rs.core.Response	saveResponseAndRedirect(KeycloakSession session, AuthenticationSessionModel authSession, javax.ws.rs.core.Response response, boolean actionRequest, HttpRequest httpRequest)
protected boolean	shouldReplaceBrowserHistory(boolean actionRequest, KeycloakSession session)

Methods inherited from class java.lang.Object

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

Field Detail

SHOULD_UPDATE_BROWSER_HISTORY

public static final String SHOULD_UPDATE_BROWSER_HISTORY

See Also:

Constant Field Values

logger

protected static final org.jboss.logging.Logger logger

Constructor Detail

BrowserHistoryHelper

public BrowserHistoryHelper()

Method Detail

saveResponseAndRedirect

public abstract javax.ws.rs.core.Response saveResponseAndRedirect(KeycloakSession session,
                                                                  AuthenticationSessionModel authSession,
                                                                  javax.ws.rs.core.Response response,
                                                                  boolean actionRequest,
                                                                  HttpRequest httpRequest)

loadSavedResponse

public abstract javax.ws.rs.core.Response loadSavedResponse(KeycloakSession session,
                                                            AuthenticationSessionModel authSession)

shouldReplaceBrowserHistory

protected boolean shouldReplaceBrowserHistory(boolean actionRequest,
                                              KeycloakSession session)

getInstance

public static BrowserHistoryHelper getInstance()