package org.keycloak.protocol.cas.endpoints;
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import jakarta.ws.rs.core.Context;
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import jakarta.ws.rs.core.HttpHeaders;
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import jakarta.ws.rs.core.Response;
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import org.jboss.logging.Logger;
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import org.jboss.resteasy.spi.HttpRequest;
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import org.keycloak.common.ClientConnection;
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import org.keycloak.events.Details;
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import org.keycloak.events.Errors;
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import org.keycloak.events.EventBuilder;
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import org.keycloak.models.*;
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import org.keycloak.protocol.ProtocolMapper;
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import org.keycloak.protocol.cas.CASLoginProtocol;
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import org.keycloak.protocol.cas.mappers.CASAttributeMapper;
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import org.keycloak.protocol.cas.representations.CASErrorCode;
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import org.keycloak.protocol.cas.utils.CASValidationException;
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import org.keycloak.protocol.oidc.utils.OAuth2CodeParser;
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import org.keycloak.protocol.oidc.utils.RedirectUtils;
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import org.keycloak.services.managers.AuthenticationManager;
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import org.keycloak.services.util.DefaultClientSessionContext;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.Set;
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import java.util.stream.Collectors;
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public abstract class AbstractValidateEndpoint {
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protected final Logger logger = Logger.getLogger(getClass());
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@Context
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protected KeycloakSession session;
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@Context
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protected ClientConnection clientConnection;
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@Context
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protected HttpRequest request;
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@Context
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protected HttpHeaders headers;
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protected RealmModel realm;
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protected EventBuilder event;
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protected ClientModel client;
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protected AuthenticatedClientSessionModel clientSession;
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public AbstractValidateEndpoint(RealmModel realm, EventBuilder event) {
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this.realm = realm;
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this.event = event;
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}
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protected void checkSsl() {
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if (!session.getContext().getUri().getBaseUri().getScheme().equals("https") && realm.getSslRequired().isRequired(clientConnection)) {
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throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "HTTPS required", Response.Status.FORBIDDEN);
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}
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}
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protected void checkRealm() {
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if (!realm.isEnabled()) {
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throw new CASValidationException(CASErrorCode.INTERNAL_ERROR, "Realm not enabled", Response.Status.FORBIDDEN);
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}
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}
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protected void checkClient(String service) {
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if (service == null) {
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event.error(Errors.INVALID_REQUEST);
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throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.SERVICE_PARAM, Response.Status.BAD_REQUEST);
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}
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event.detail(Details.REDIRECT_URI, service);
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client = realm.getClientsStream()
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.filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
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.filter(c -> RedirectUtils.verifyRedirectUri(session, service, c) != null)
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.findFirst().orElse(null);
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if (client == null) {
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event.error(Errors.CLIENT_NOT_FOUND);
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throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client not found", Response.Status.BAD_REQUEST);
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}
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if (!client.isEnabled()) {
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event.error(Errors.CLIENT_DISABLED);
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throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client disabled", Response.Status.BAD_REQUEST);
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}
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event.client(client.getClientId());
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session.getContext().setClient(client);
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}
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protected void checkTicket(String ticket, boolean requireReauth) {
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if (ticket == null) {
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event.error(Errors.INVALID_CODE);
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throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.TICKET_PARAM, Response.Status.BAD_REQUEST);
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}
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if (!ticket.startsWith(CASLoginProtocol.SERVICE_TICKET_PREFIX)) {
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event.error(Errors.INVALID_CODE);
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throw new CASValidationException(CASErrorCode.INVALID_TICKET_SPEC, "Malformed service ticket", Response.Status.BAD_REQUEST);
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}
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String code = ticket.substring(CASLoginProtocol.SERVICE_TICKET_PREFIX.length());
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OAuth2CodeParser.ParseResult parseResult = OAuth2CodeParser.parseCode(session, code, realm, event);
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if (parseResult.isIllegalCode()) {
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event.error(Errors.INVALID_CODE);
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// Attempt to use same code twice should invalidate existing clientSession
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AuthenticatedClientSessionModel clientSession = parseResult.getClientSession();
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if (clientSession != null) {
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clientSession.detachFromUserSession();
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}
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throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code not valid", Response.Status.BAD_REQUEST);
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}
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clientSession = parseResult.getClientSession();
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if (parseResult.isExpiredCode()) {
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event.error(Errors.EXPIRED_CODE);
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throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code is expired", Response.Status.BAD_REQUEST);
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}
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clientSession.setNote(CASLoginProtocol.SESSION_SERVICE_TICKET, ticket);
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if (requireReauth && AuthenticationManager.isSSOAuthentication(clientSession)) {
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event.error(Errors.SESSION_EXPIRED);
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throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Interactive authentication was requested but not performed", Response.Status.BAD_REQUEST);
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}
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UserSessionModel userSession = clientSession.getUserSession();
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if (userSession == null) {
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event.error(Errors.USER_SESSION_NOT_FOUND);
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throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User session not found", Response.Status.BAD_REQUEST);
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}
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UserModel user = userSession.getUser();
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if (user == null) {
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event.error(Errors.USER_NOT_FOUND);
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throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User not found", Response.Status.BAD_REQUEST);
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}
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if (!user.isEnabled()) {
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event.error(Errors.USER_DISABLED);
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throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User disabled", Response.Status.BAD_REQUEST);
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}
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event.user(userSession.getUser());
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event.session(userSession.getId());
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if (!client.getClientId().equals(clientSession.getClient().getClientId())) {
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event.error(Errors.INVALID_CODE);
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throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Auth error", Response.Status.BAD_REQUEST);
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}
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if (!AuthenticationManager.isSessionValid(realm, userSession)) {
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event.error(Errors.USER_SESSION_NOT_FOUND);
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throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Session not active", Response.Status.BAD_REQUEST);
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}
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}
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protected Map<String, Object> getUserAttributes() {
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UserSessionModel userSession = clientSession.getUserSession();
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// CAS protocol does not support scopes, so pass null scopeParam
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ClientSessionContext clientSessionCtx = DefaultClientSessionContext.fromClientSessionAndScopeParameter(clientSession, null, session);
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Set<ProtocolMapperModel> mappings = clientSessionCtx.getProtocolMappersStream().collect(Collectors.toSet());
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KeycloakSessionFactory sessionFactory = session.getKeycloakSessionFactory();
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Map<String, Object> attributes = new HashMap<>();
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for (ProtocolMapperModel mapping : mappings) {
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ProtocolMapper mapper = (ProtocolMapper) sessionFactory.getProviderFactory(ProtocolMapper.class, mapping.getProtocolMapper());
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if (mapper instanceof CASAttributeMapper) {
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((CASAttributeMapper) mapper).setAttribute(attributes, mapping, userSession, session, clientSessionCtx);
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}
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}
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return attributes;
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}
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}
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