src/main/java/org/keycloak/protocol/cas/CASLoginProtocol.java

@@ -12,6 +12,7 @@
import org.keycloak.protocol.cas.utils.LogoutHelper;
import org.keycloak.protocol.oidc.utils.OAuth2Code;
import org.keycloak.protocol.oidc.utils.OAuth2CodeParser;
import org.keycloak.services.ErrorPage;
import org.keycloak.services.managers.ResourceAdminManager;
import org.keycloak.sessions.AuthenticationSessionModel;

@@ -35,6 +36,7 @@
    public static final String FORMAT_PARAM = "format";

    public static final String TICKET_RESPONSE_PARAM = "ticket";
    public static final String SAMLART_RESPONSE_PARAM = "SAMLart";

    public static final String SERVICE_TICKET_PREFIX = "ST-";
    public static final String SESSION_SERVICE_TICKET = "service_ticket";
@@ -101,7 +103,15 @@
        String code = OAuth2CodeParser.persistCode(session, clientSession, codeData);

        KeycloakUriBuilder uriBuilder = KeycloakUriBuilder.fromUri(service);
        uriBuilder.queryParam(TICKET_RESPONSE_PARAM, SERVICE_TICKET_PREFIX + code);

        String loginTicket = SERVICE_TICKET_PREFIX + code;

        if (authSession.getClientNotes().containsKey(CASLoginProtocol.TARGET_PARAM)) {
            // This was a SAML 1.1 auth request so return the ticket ID as "SAMLart" instead of "ticket"
            uriBuilder.queryParam(SAMLART_RESPONSE_PARAM, loginTicket);
        } else {
            uriBuilder.queryParam(TICKET_RESPONSE_PARAM, loginTicket);
        }

        URI redirectUri = uriBuilder.build();

@@ -111,11 +121,16 @@

    @Override
    public Response sendError(AuthenticationSessionModel authSession, Error error) {
        return Response.serverError().entity(error).build();
        if (authSession.getClientNotes().containsKey(CASLoginProtocol.GATEWAY_PARAM)) {
            if (error == Error.PASSIVE_INTERACTION_REQUIRED || error == Error.PASSIVE_LOGIN_REQUIRED) {
                return Response.status(302).location(URI.create(authSession.getRedirectUri())).build();
            }
        }
        return ErrorPage.error(session, authSession, Response.Status.INTERNAL_SERVER_ERROR, error.name());
    }

    @Override
    public void backchannelLogout(UserSessionModel userSession, AuthenticatedClientSessionModel clientSession) {
    public Response backchannelLogout(UserSessionModel userSession, AuthenticatedClientSessionModel clientSession) {
        String logoutUrl = clientSession.getRedirectUri();
        String serviceTicket = clientSession.getNote(CASLoginProtocol.SESSION_SERVICE_TICKET);
        //check if session is fully authenticated (i.e. serviceValidate has been called)
@@ -123,7 +138,8 @@
            sendSingleLogoutRequest(logoutUrl, serviceTicket);
        }
        ClientModel client = clientSession.getClient();
        new ResourceAdminManager(session).logoutClientSession(uriInfo.getRequestUri(), realm, client, clientSession);
        new ResourceAdminManager(session).logoutClientSession(realm, client, clientSession);
        return Response.ok().build();
    }

    private void sendSingleLogoutRequest(String logoutUrl, String serviceTicket) {
@@ -143,7 +159,7 @@
    }

    @Override
    public Response finishLogout(UserSessionModel userSession) {
    public Response finishBrowserLogout(UserSessionModel userSession, AuthenticationSessionModel logoutSession) {
        String redirectUri = userSession.getNote(CASLoginProtocol.LOGOUT_REDIRECT_URI);

        event.event(EventType.LOGOUT);