modules/keycloak-protocol-cas

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2023-02-21 0dd6a08579adb4f5a92fc6bc338935a348528e6f

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74023a	1	package org.keycloak.protocol.cas.endpoints;
EH	2
	3	import org.jboss.logging.Logger;
	4	import org.jboss.resteasy.spi.HttpRequest;
	5	import org.keycloak.common.ClientConnection;
	6	import org.keycloak.events.Errors;
	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 javax.ws.rs.core.Context;
	20	import javax.ws.rs.core.HttpHeaders;
	21	import javax.ws.rs.core.Response;
	22	import java.util.HashMap;
	23	import java.util.Map;
	24	import java.util.Set;
ea9555	25	import java.util.stream.Collectors;
74023a	26
EH	27	public abstract class AbstractValidateEndpoint {
	28	protected final Logger logger = Logger.getLogger(getClass());
	29	@Context
	30	protected KeycloakSession session;
	31	@Context
	32	protected ClientConnection clientConnection;
	33	@Context
	34	protected HttpRequest request;
	35	@Context
	36	protected HttpHeaders headers;
	37	protected RealmModel realm;
	38	protected EventBuilder event;
	39	protected ClientModel client;
	40	protected AuthenticatedClientSessionModel clientSession;
	41
	42	public AbstractValidateEndpoint(RealmModel realm, EventBuilder event) {
	43	this.realm = realm;
	44	this.event = event;
	45	}
	46
	47	protected void checkSsl() {
	48	if (!session.getContext().getUri().getBaseUri().getScheme().equals("https") && realm.getSslRequired().isRequired(clientConnection)) {
	49	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "HTTPS required", Response.Status.FORBIDDEN);
	50	}
	51	}
	52
	53	protected void checkRealm() {
	54	if (!realm.isEnabled()) {
	55	throw new CASValidationException(CASErrorCode.INTERNAL_ERROR, "Realm not enabled", Response.Status.FORBIDDEN);
	56	}
	57	}
	58
	59	protected void checkClient(String service) {
	60	if (service == null) {
	61	event.error(Errors.INVALID_REQUEST);
	62	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.SERVICE_PARAM, Response.Status.BAD_REQUEST);
	63	}
	64
ea9555	65	client = realm.getClientsStream()
74023a	66	.filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
019db5	67	.filter(c -> RedirectUtils.verifyRedirectUri(session, service, c) != null)
74023a	68	.findFirst().orElse(null);
EH	69	if (client == null) {
	70	event.error(Errors.CLIENT_NOT_FOUND);
	71	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client not found", Response.Status.BAD_REQUEST);
	72	}
	73
	74	if (!client.isEnabled()) {
	75	event.error(Errors.CLIENT_DISABLED);
	76	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client disabled", Response.Status.BAD_REQUEST);
	77	}
	78
	79	event.client(client.getClientId());
	80
	81	session.getContext().setClient(client);
	82	}
	83
	84	protected void checkTicket(String ticket, boolean requireReauth) {
	85	if (ticket == null) {
	86	event.error(Errors.INVALID_CODE);
	87	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.TICKET_PARAM, Response.Status.BAD_REQUEST);
	88	}
	89	if (!ticket.startsWith(CASLoginProtocol.SERVICE_TICKET_PREFIX)) {
	90	event.error(Errors.INVALID_CODE);
	91	throw new CASValidationException(CASErrorCode.INVALID_TICKET_SPEC, "Malformed service ticket", Response.Status.BAD_REQUEST);
	92	}
	93
	94	String code = ticket.substring(CASLoginProtocol.SERVICE_TICKET_PREFIX.length());
	95
c140ce	96	OAuth2CodeParser.ParseResult parseResult = OAuth2CodeParser.parseCode(session, code, realm, event);
MP	97	if (parseResult.isIllegalCode()) {
74023a	98	event.error(Errors.INVALID_CODE);
EH	99
	100	// Attempt to use same code twice should invalidate existing clientSession
	101	AuthenticatedClientSessionModel clientSession = parseResult.getClientSession();
	102	if (clientSession != null) {
	103	clientSession.detachFromUserSession();
	104	}
	105
	106	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code not valid", Response.Status.BAD_REQUEST);
	107	}
	108
	109	clientSession = parseResult.getClientSession();
	110
c140ce	111	if (parseResult.isExpiredCode()) {
74023a	112	event.error(Errors.EXPIRED_CODE);
EH	113	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code is expired", Response.Status.BAD_REQUEST);
	114	}
	115
	116	clientSession.setNote(CASLoginProtocol.SESSION_SERVICE_TICKET, ticket);
	117
	118	if (requireReauth && AuthenticationManager.isSSOAuthentication(clientSession)) {
	119	event.error(Errors.SESSION_EXPIRED);
	120	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Interactive authentication was requested but not performed", Response.Status.BAD_REQUEST);
	121	}
	122
	123	UserSessionModel userSession = clientSession.getUserSession();
	124
	125	if (userSession == null) {
	126	event.error(Errors.USER_SESSION_NOT_FOUND);
	127	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User session not found", Response.Status.BAD_REQUEST);
	128	}
	129
	130	UserModel user = userSession.getUser();
	131	if (user == null) {
	132	event.error(Errors.USER_NOT_FOUND);
	133	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User not found", Response.Status.BAD_REQUEST);
	134	}
	135	if (!user.isEnabled()) {
	136	event.error(Errors.USER_DISABLED);
	137	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User disabled", Response.Status.BAD_REQUEST);
	138	}
	139
	140	event.user(userSession.getUser());
	141	event.session(userSession.getId());
	142
	143	if (!client.getClientId().equals(clientSession.getClient().getClientId())) {
	144	event.error(Errors.INVALID_CODE);
	145	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Auth error", Response.Status.BAD_REQUEST);
	146	}
	147
	148	if (!AuthenticationManager.isSessionValid(realm, userSession)) {
	149	event.error(Errors.USER_SESSION_NOT_FOUND);
	150	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Session not active", Response.Status.BAD_REQUEST);
	151	}
	152	}
	153
	154	protected Map<String, Object> getUserAttributes() {
	155	UserSessionModel userSession = clientSession.getUserSession();
	156	// CAS protocol does not support scopes, so pass null scopeParam
8379a3	157	ClientSessionContext clientSessionCtx = DefaultClientSessionContext.fromClientSessionAndScopeParameter(clientSession, null, session);
74023a	158
ea9555	159	Set<ProtocolMapperModel> mappings = clientSessionCtx.getProtocolMappersStream().collect(Collectors.toSet());
74023a	160	KeycloakSessionFactory sessionFactory = session.getKeycloakSessionFactory();
EH	161	Map<String, Object> attributes = new HashMap<>();
	162	for (ProtocolMapperModel mapping : mappings) {
	163	ProtocolMapper mapper = (ProtocolMapper) sessionFactory.getProviderFactory(ProtocolMapper.class, mapping.getProtocolMapper());
	164	if (mapper instanceof CASAttributeMapper) {
	165	((CASAttributeMapper) mapper).setAttribute(attributes, mapping, userSession, session, clientSessionCtx);
	166	}
	167	}
	168	return attributes;
	169	}
	170	}