HttpServletResponse response,
LoginConfig config)
throws IOException {
// References to objects we will need later
Session session = null;
// Have we already authenticated someone?
Principal principal = request.getUserPrincipal();
String ssoId = (String) request.getNote(Constants.REQ_SSOID_NOTE);
if (principal != null) {
if (log.isDebugEnabled())
log.debug("Already authenticated '" +
principal.getName() + "'");
// Associate the session with any existing SSO session
if (ssoId != null)
associate(ssoId, request.getSessionInternal(true));
return (true);
}
// Is there an SSO session against which we can try to reauthenticate?
if (ssoId != null) {
if (log.isDebugEnabled())
log.debug("SSO Id " + ssoId + " set; attempting " +
"reauthentication");
// Try to reauthenticate using data cached by SSO. If this fails,
// either the original SSO logon was of DIGEST or SSL (which
// we can't reauthenticate ourselves because there is no
// cached username and password), or the realm denied
// the user's reauthentication for some reason.
// In either case we have to prompt the user for a logon */
if (reauthenticateFromSSO(ssoId, request))
return true;
}
// Have we authenticated this user before but have caching disabled?
if (!cache) {
session = request.getSessionInternal(true);
if (log.isDebugEnabled())
log.debug("Checking for reauthenticate in session " + session);
String username =
(String) session.getNote(Constants.SESS_USERNAME_NOTE);
String password =
(String) session.getNote(Constants.SESS_PASSWORD_NOTE);
if ((username != null) && (password != null)) {
if (log.isDebugEnabled())
log.debug("Reauthenticating username '" + username + "'");
principal =
context.getRealm().authenticate(username, password);
if (principal != null) {
session.setNote(Constants.FORM_PRINCIPAL_NOTE, principal);
if (!matchRequest(request)) {
register(request, response, principal,
HttpServletRequest.FORM_AUTH,
username, password);
return (true);
}
}
if (log.isDebugEnabled())
log.debug("Reauthentication failed, proceed normally");
}
}
// Is this the re-submit of the original request URI after successful
// authentication? If so, forward the *original* request instead.
if (matchRequest(request)) {
session = request.getSessionInternal(true);
if (log.isDebugEnabled())
log.debug("Restore request from session '" + session.getId()
+ "'");
principal = (Principal)
session.getNote(Constants.FORM_PRINCIPAL_NOTE);
register(request, response, principal, HttpServletRequest.FORM_AUTH,
(String) session.getNote(Constants.SESS_USERNAME_NOTE),
(String) session.getNote(Constants.SESS_PASSWORD_NOTE));
// If we're caching principals we no longer need the username
// and password in the session, so remove them
if (cache) {
session.removeNote(Constants.SESS_USERNAME_NOTE);
session.removeNote(Constants.SESS_PASSWORD_NOTE);
}
if (restoreRequest(request, session)) {
if (log.isDebugEnabled())
log.debug("Proceed to restored request");
return (true);
} else {
if (log.isDebugEnabled())
log.debug("Restore of original request failed");
response.sendError(HttpServletResponse.SC_BAD_REQUEST);
return (false);
}
}
// Acquire references to objects we will need to evaluate
MessageBytes uriMB = MessageBytes.newInstance();
CharChunk uriCC = uriMB.getCharChunk();
uriCC.setLimit(-1);
String contextPath = request.getContextPath();
String requestURI = request.getDecodedRequestURI();
// Is this the action request from the login page?
boolean loginAction =
requestURI.startsWith(contextPath) &&
requestURI.endsWith(Constants.FORM_ACTION);
// No -- Save this request and redirect to the form login page
if (!loginAction) {
session = request.getSessionInternal(true);
if (log.isDebugEnabled())
log.debug("Save request in session '" + session.getId() + "'");
saveRequest(request, session);
forwardToLoginPage(request, response, config);
return (false);
}
// Yes -- Validate the specified credentials and redirect
// to the error page if they are not correct
Realm realm = context.getRealm();
if (characterEncoding != null) {
request.setCharacterEncoding(characterEncoding);
}
String username = request.getParameter(Constants.FORM_USERNAME);
String password = request.getParameter(Constants.FORM_PASSWORD);
if (log.isDebugEnabled())
log.debug("Authenticating username '" + username + "'");
principal = realm.authenticate(username, password);
if (principal == null) {
forwardToErrorPage(request, response, config);
return (false);
}
if (log.isDebugEnabled())
log.debug("Authentication of '" + username + "' was successful");
if (session == null)
session = request.getSessionInternal(false);
if (session == null) {
if (containerLog.isDebugEnabled())
containerLog.debug("User took so long to log on the session expired");
response.sendError(HttpServletResponse.SC_REQUEST_TIMEOUT,
sm.getString("authenticator.sessionExpired"));
return (false);
}
// Save the authenticated Principal in our session
session.setNote(Constants.FORM_PRINCIPAL_NOTE, principal);
// Save the username and password as well
session.setNote(Constants.SESS_USERNAME_NOTE, username);
session.setNote(Constants.SESS_PASSWORD_NOTE, password);
// Redirect the user to the original request URI (which will cause
// the original request to be restored)
requestURI = savedRequestURL(session);
if (log.isDebugEnabled())