/** Validate the token and return it. */
private PersistentToken getPersistentToken(String[] cookieTokens) {
if (cookieTokens.length != 2) {
throw new InvalidCookieException(
"Cookie token did not contain "
+ 2
+ " tokens, but contained '"
+ Arrays.asList(cookieTokens)
+ "'");
}
String presentedSeries = cookieTokens[0];
String presentedToken = cookieTokens[1];
PersistentToken token = persistentTokenRepository.findOne(presentedSeries);
if (token == null) {
// No series match, so we can't authenticate using this cookie
throw new RememberMeAuthenticationException(
"No persistent token found for series id: " + presentedSeries);
}
// We have a match for this user/series combination
log.info("presentedToken={} / tokenValue={}", presentedToken, token.getTokenValue());
if (!presentedToken.equals(token.getTokenValue())) {
// Token doesn't match series value. Delete this session and throw an exception.
persistentTokenRepository.delete(token);
throw new CookieTheftException(
"Invalid remember-me token (Series/token) mismatch. Implies previous cookie theft attack.");
}
if (token.getTokenDate().plusDays(TOKEN_VALIDITY_DAYS).isBefore(LocalDate.now())) {
persistentTokenRepository.delete(token);
throw new RememberMeAuthenticationException("Remember-me login has expired");
}
return token;
}
/**
* When logout occurs, only invalidate the current token, and not all user sessions.
*
* <p>The standard Spring Security implementations are too basic: they invalidate all tokens for
* the current user, so when he logs out from one browser, all his other sessions are destroyed.
*/
@Override
@Transactional
public void logout(
HttpServletRequest request, HttpServletResponse response, Authentication authentication) {
String rememberMeCookie = extractRememberMeCookie(request);
if (rememberMeCookie != null && rememberMeCookie.length() != 0) {
try {
String[] cookieTokens = decodeCookie(rememberMeCookie);
PersistentToken token = getPersistentToken(cookieTokens);
persistentTokenRepository.delete(token);
} catch (InvalidCookieException ice) {
log.info("Invalid cookie, no persistent token could be deleted");
} catch (RememberMeAuthenticationException rmae) {
log.debug("No persistent token found, so no token could be deleted");
}
}
super.logout(request, response, authentication);
}