modules/keycloak-protocol-cas

Jacek Kowalski

2023-11-24 f3460d82f87591ebf1260e02ef7565f5e8eb00f3

commit \| author \| age
74023a	1	package org.keycloak.protocol.cas.endpoints;
EH	2
fdb9f6	3	import jakarta.ws.rs.core.Response;
74023a	4	import org.jboss.logging.Logger;
b88dc3	5	import org.keycloak.events.Details;
74023a	6	import org.keycloak.events.Errors;
EH	7	import org.keycloak.events.EventBuilder;
	8	import org.keycloak.models.*;
	9	import org.keycloak.protocol.ProtocolMapper;
	10	import org.keycloak.protocol.cas.CASLoginProtocol;
	11	import org.keycloak.protocol.cas.mappers.CASAttributeMapper;
	12	import org.keycloak.protocol.cas.representations.CASErrorCode;
	13	import org.keycloak.protocol.cas.utils.CASValidationException;
c140ce	14	import org.keycloak.protocol.oidc.utils.OAuth2CodeParser;
74023a	15	import org.keycloak.protocol.oidc.utils.RedirectUtils;
EH	16	import org.keycloak.services.managers.AuthenticationManager;
	17	import org.keycloak.services.util.DefaultClientSessionContext;
	18
	19	import java.util.HashMap;
	20	import java.util.Map;
	21	import java.util.Set;
ea9555	22	import java.util.stream.Collectors;
74023a	23
EH	24	public abstract class AbstractValidateEndpoint {
	25	protected final Logger logger = Logger.getLogger(getClass());
	26	protected KeycloakSession session;
	27	protected RealmModel realm;
	28	protected EventBuilder event;
	29	protected ClientModel client;
	30	protected AuthenticatedClientSessionModel clientSession;
	31
ceed8f	32	public AbstractValidateEndpoint(KeycloakSession session, RealmModel realm, EventBuilder event) {
JK	33	this.session = session;
74023a	34	this.realm = realm;
EH	35	this.event = event;
	36	}
	37
	38	protected void checkSsl() {
ceed8f	39	if (!session.getContext().getUri().getBaseUri().getScheme().equals("https") && realm.getSslRequired().isRequired(session.getContext().getConnection())) {
74023a	40	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "HTTPS required", Response.Status.FORBIDDEN);
EH	41	}
	42	}
	43
	44	protected void checkRealm() {
	45	if (!realm.isEnabled()) {
	46	throw new CASValidationException(CASErrorCode.INTERNAL_ERROR, "Realm not enabled", Response.Status.FORBIDDEN);
	47	}
	48	}
	49
	50	protected void checkClient(String service) {
	51	if (service == null) {
	52	event.error(Errors.INVALID_REQUEST);
	53	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.SERVICE_PARAM, Response.Status.BAD_REQUEST);
	54	}
	55
b88dc3	56	event.detail(Details.REDIRECT_URI, service);
AP	57
ea9555	58	client = realm.getClientsStream()
74023a	59	.filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
019db5	60	.filter(c -> RedirectUtils.verifyRedirectUri(session, service, c) != null)
74023a	61	.findFirst().orElse(null);
EH	62	if (client == null) {
	63	event.error(Errors.CLIENT_NOT_FOUND);
	64	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client not found", Response.Status.BAD_REQUEST);
	65	}
	66
	67	if (!client.isEnabled()) {
	68	event.error(Errors.CLIENT_DISABLED);
	69	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client disabled", Response.Status.BAD_REQUEST);
	70	}
	71
	72	event.client(client.getClientId());
	73
	74	session.getContext().setClient(client);
	75	}
	76
	77	protected void checkTicket(String ticket, boolean requireReauth) {
	78	if (ticket == null) {
	79	event.error(Errors.INVALID_CODE);
	80	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.TICKET_PARAM, Response.Status.BAD_REQUEST);
	81	}
	82	if (!ticket.startsWith(CASLoginProtocol.SERVICE_TICKET_PREFIX)) {
	83	event.error(Errors.INVALID_CODE);
	84	throw new CASValidationException(CASErrorCode.INVALID_TICKET_SPEC, "Malformed service ticket", Response.Status.BAD_REQUEST);
	85	}
	86
	87	String code = ticket.substring(CASLoginProtocol.SERVICE_TICKET_PREFIX.length());
	88
c140ce	89	OAuth2CodeParser.ParseResult parseResult = OAuth2CodeParser.parseCode(session, code, realm, event);
MP	90	if (parseResult.isIllegalCode()) {
74023a	91	event.error(Errors.INVALID_CODE);
EH	92
	93	// Attempt to use same code twice should invalidate existing clientSession
	94	AuthenticatedClientSessionModel clientSession = parseResult.getClientSession();
	95	if (clientSession != null) {
	96	clientSession.detachFromUserSession();
	97	}
	98
	99	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code not valid", Response.Status.BAD_REQUEST);
	100	}
	101
	102	clientSession = parseResult.getClientSession();
	103
c140ce	104	if (parseResult.isExpiredCode()) {
74023a	105	event.error(Errors.EXPIRED_CODE);
EH	106	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code is expired", Response.Status.BAD_REQUEST);
	107	}
	108
	109	clientSession.setNote(CASLoginProtocol.SESSION_SERVICE_TICKET, ticket);
	110
	111	if (requireReauth && AuthenticationManager.isSSOAuthentication(clientSession)) {
	112	event.error(Errors.SESSION_EXPIRED);
	113	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Interactive authentication was requested but not performed", Response.Status.BAD_REQUEST);
	114	}
	115
	116	UserSessionModel userSession = clientSession.getUserSession();
	117
	118	if (userSession == null) {
	119	event.error(Errors.USER_SESSION_NOT_FOUND);
	120	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User session not found", Response.Status.BAD_REQUEST);
	121	}
	122
	123	UserModel user = userSession.getUser();
	124	if (user == null) {
	125	event.error(Errors.USER_NOT_FOUND);
	126	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User not found", Response.Status.BAD_REQUEST);
	127	}
	128	if (!user.isEnabled()) {
	129	event.error(Errors.USER_DISABLED);
	130	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User disabled", Response.Status.BAD_REQUEST);
	131	}
	132
	133	event.user(userSession.getUser());
	134	event.session(userSession.getId());
	135
	136	if (!client.getClientId().equals(clientSession.getClient().getClientId())) {
	137	event.error(Errors.INVALID_CODE);
	138	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Auth error", Response.Status.BAD_REQUEST);
	139	}
	140
	141	if (!AuthenticationManager.isSessionValid(realm, userSession)) {
	142	event.error(Errors.USER_SESSION_NOT_FOUND);
	143	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Session not active", Response.Status.BAD_REQUEST);
	144	}
	145	}
	146
	147	protected Map<String, Object> getUserAttributes() {
	148	UserSessionModel userSession = clientSession.getUserSession();
	149	// CAS protocol does not support scopes, so pass null scopeParam
8379a3	150	ClientSessionContext clientSessionCtx = DefaultClientSessionContext.fromClientSessionAndScopeParameter(clientSession, null, session);
74023a	151
ea9555	152	Set<ProtocolMapperModel> mappings = clientSessionCtx.getProtocolMappersStream().collect(Collectors.toSet());
74023a	153	KeycloakSessionFactory sessionFactory = session.getKeycloakSessionFactory();
EH	154	Map<String, Object> attributes = new HashMap<>();
	155	for (ProtocolMapperModel mapping : mappings) {
	156	ProtocolMapper mapper = (ProtocolMapper) sessionFactory.getProviderFactory(ProtocolMapper.class, mapping.getProtocolMapper());
	157	if (mapper instanceof CASAttributeMapper) {
	158	((CASAttributeMapper) mapper).setAttribute(attributes, mapping, userSession, session, clientSessionCtx);
	159	}
	160	}
	161	return attributes;
	162	}
	163	}