org.springframework.security.web.authentication.rememberme
Class PersistentTokenBasedRememberMeServices

java.lang.Object
  extended by org.springframework.security.web.authentication.rememberme.AbstractRememberMeServices
      extended by org.springframework.security.web.authentication.rememberme.PersistentTokenBasedRememberMeServices
All Implemented Interfaces:
InitializingBean, LogoutHandler, RememberMeServices

public class PersistentTokenBasedRememberMeServices
extends AbstractRememberMeServices

RememberMeServices implementation based on Barry Jaspan's Improved Persistent Login Cookie Best Practice. There is a slight modification to the described approach, in that the username is not stored as part of the cookie but obtained from the persistent store via an implementation of PersistentTokenRepository. The latter should place a unique constraint on the series identifier, so that it is impossible for the same identifier to be allocated to two different users.

User management such as changing passwords, removing users and setting user status should be combined with maintenance of the user's persistent tokens.

Note that while this class will use the date a token was created to check whether a presented cookie is older than the configured tokenValiditySeconds property and deny authentication in this case, it will not delete these tokens from storage. A suitable batch process should be run periodically to remove expired tokens from the database.

Since:
2.0
Version:
$Id: PersistentTokenBasedRememberMeServices.java 4003 2009-11-24 09:31:03Z ltaylor $
Author:
Luke Taylor

Field Summary
static int DEFAULT_SERIES_LENGTH
           
static int DEFAULT_TOKEN_LENGTH
           
 
Fields inherited from class org.springframework.security.web.authentication.rememberme.AbstractRememberMeServices
DEFAULT_PARAMETER, logger, messages, SPRING_SECURITY_REMEMBER_ME_COOKIE_KEY, TWO_WEEKS_S
 
Constructor Summary
PersistentTokenBasedRememberMeServices()
           
 
Method Summary
protected  String generateSeriesData()
           
protected  String generateTokenData()
           
 void logout(HttpServletRequest request, HttpServletResponse response, Authentication authentication)
          Implementation of LogoutHandler.
protected  void onLoginSuccess(HttpServletRequest request, HttpServletResponse response, Authentication successfulAuthentication)
          Creates a new persistent login token with a new series number, stores the data in the persistent token repository and adds the corresponding cookie to the response.
protected  UserDetails processAutoLoginCookie(String[] cookieTokens, HttpServletRequest request, HttpServletResponse response)
          Locates the presented cookie data in the token repository, using the series id.
 void setSeriesLength(int seriesLength)
           
 void setTokenLength(int tokenLength)
           
 void setTokenRepository(PersistentTokenRepository tokenRepository)
           
 void setTokenValiditySeconds(int tokenValiditySeconds)
           
 
Methods inherited from class org.springframework.security.web.authentication.rememberme.AbstractRememberMeServices
afterPropertiesSet, autoLogin, cancelCookie, createSuccessfulAuthentication, decodeCookie, encodeCookie, extractRememberMeCookie, getAuthenticationDetailsSource, getCookieName, getKey, getParameter, getTokenValiditySeconds, getUserDetailsService, loginFail, loginSuccess, onLoginFail, rememberMeRequested, setAlwaysRemember, setAuthenticationDetailsSource, setCookie, setCookieName, setKey, setParameter, setUserDetailsService, setUseSecureCookie
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

DEFAULT_SERIES_LENGTH

public static final int DEFAULT_SERIES_LENGTH
See Also:
Constant Field Values

DEFAULT_TOKEN_LENGTH

public static final int DEFAULT_TOKEN_LENGTH
See Also:
Constant Field Values
Constructor Detail

PersistentTokenBasedRememberMeServices

public PersistentTokenBasedRememberMeServices()
                                       throws Exception
Throws:
Exception
Method Detail

processAutoLoginCookie

protected UserDetails processAutoLoginCookie(String[] cookieTokens,
                                             HttpServletRequest request,
                                             HttpServletResponse response)
Locates the presented cookie data in the token repository, using the series id. If the data compares successfully with that in the persistent store, a new token is generated and stored with the same series. The corresponding cookie value is set on the response.

Specified by:
processAutoLoginCookie in class AbstractRememberMeServices
Parameters:
cookieTokens - the series and token values
request - the request
response - the response, to allow the cookie to be modified if required.
Returns:
the UserDetails for the corresponding user account if the cookie was validated successfully.
Throws:
RememberMeAuthenticationException - if there is no stored token corresponding to the submitted cookie, or if the token in the persistent store has expired.
InvalidCookieException - if the cookie doesn't have two tokens as expected.
CookieTheftException - if a presented series value is found, but the stored token is different from the one presented.

onLoginSuccess

protected void onLoginSuccess(HttpServletRequest request,
                              HttpServletResponse response,
                              Authentication successfulAuthentication)
Creates a new persistent login token with a new series number, stores the data in the persistent token repository and adds the corresponding cookie to the response.

Specified by:
onLoginSuccess in class AbstractRememberMeServices

logout

public void logout(HttpServletRequest request,
                   HttpServletResponse response,
                   Authentication authentication)
Description copied from class: AbstractRememberMeServices
Implementation of LogoutHandler. Default behaviour is to call cancelCookie().

Specified by:
logout in interface LogoutHandler
Overrides:
logout in class AbstractRememberMeServices
Parameters:
request - the HTTP request
response - the HTTP response
authentication - the current principal details

generateSeriesData

protected String generateSeriesData()

generateTokenData

protected String generateTokenData()

setTokenRepository

public void setTokenRepository(PersistentTokenRepository tokenRepository)

setSeriesLength

public void setSeriesLength(int seriesLength)

setTokenLength

public void setTokenLength(int tokenLength)

setTokenValiditySeconds

public void setTokenValiditySeconds(int tokenValiditySeconds)
Overrides:
setTokenValiditySeconds in class AbstractRememberMeServices


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