public boolean onRegister(Authentication auth, String sessionId, SessionRegistry registry)
throws SessionException {
List<Sessioninfo> sessions = registry.getSessioninfos(auth.getName(), false);
int sessionCount = 0;
if (sessions != null) sessionCount = sessions.size();
if (sessionCount <= 0) return allocate(auth, sessionId);
boolean allocated = false;
int allowableSessions = getMaxSessions(auth);
if (sessionCount < allowableSessions || allowableSessions == -1) {
allocated = allocate(auth, sessionId);
}
// Determine least recently used session, and mark it for invalidation
if (!allocated) {
Sessioninfo leastRecentlyUsed = null;
for (int i = 0; i < sessions.size(); i++) {
if ((leastRecentlyUsed == null)
|| sessions.get(i).getLoginAt().before(leastRecentlyUsed.getLoginAt())) {
leastRecentlyUsed = sessions.get(i);
}
}
if (null != leastRecentlyUsed) {
registry.expire(leastRecentlyUsed.getId());
allocated = true;
}
}
return allocated;
}
/**
* Ensures the authentication object in the secure context is set to null when authentication
* fails.
*/
protected void unsuccessfulAuthentication(
HttpServletRequest request, HttpServletResponse response, AuthenticationException failed) {
SecurityContextHolder.clearContext();
if (null != sessionRegistry) sessionRegistry.remove(request.getSession().getId());
if (null != failed) {
logger.debug("Cleared security context due to exception", failed);
request
.getSession()
.setAttribute(AbstractAuthenticationFilter.SECURITY_LAST_EXCEPTION_KEY, failed);
if (failed instanceof UsernameNotFoundException) {
throw failed;
}
}
}
/** Do the actual authentication for a pre-authenticated user. */
private void doAuthenticate(HttpServletRequest request, HttpServletResponse response) {
Authentication authResult = null;
PreauthAuthentication auth = getPreauthAuthentication(request, response);
if (auth == null) {
logger.debug("No pre-authenticated principal found in request");
return;
} else {
logger.debug("trying to authenticate preauth={}", auth);
}
try {
auth.setDetails(authenticationDetailsSource.buildDetails(request));
authResult = authenticationManager.authenticate(auth);
sessionRegistry.register(authResult, request.getSession().getId());
successfulAuthentication(request, response, authResult);
} catch (AuthenticationException failed) {
unsuccessfulAuthentication(request, response, failed);
if (!continueOnFail) {
throw failed;
}
}
}
