modules/keycloak-protocol-cas

Matthias Piepkorn

2017-11-14 5570d4519cf3fdfdea45aec409a48c61e781e933

commit \| author \| age
7f7e0c	1	package org.keycloak.protocol.cas.endpoints;
MP	2
	3	import org.jboss.logging.Logger;
	4	import org.jboss.resteasy.annotations.cache.NoCache;
	5	import org.jboss.resteasy.spi.HttpRequest;
	6	import org.keycloak.common.ClientConnection;
	7	import org.keycloak.events.Details;
	8	import org.keycloak.events.Errors;
	9	import org.keycloak.events.EventBuilder;
	10	import org.keycloak.events.EventType;
	11	import org.keycloak.models.*;
	12	import org.keycloak.protocol.cas.CASLoginProtocol;
352436	13	import org.keycloak.protocol.cas.representations.CASErrorCode;
MP	14	import org.keycloak.protocol.cas.utils.CASValidationException;
7f7e0c	15	import org.keycloak.protocol.oidc.utils.RedirectUtils;
MP	16	import org.keycloak.services.managers.AuthenticationManager;
	17	import org.keycloak.services.managers.ClientSessionCode;
	18
	19	import javax.ws.rs.GET;
	20	import javax.ws.rs.core.*;
5570d4	21	import java.lang.reflect.Method;
7f7e0c	22
MP	23	public class ValidateEndpoint {
57a6c1	24	protected static final Logger logger = Logger.getLogger(ValidateEndpoint.class);
7f7e0c	25
MP	26	private static final String RESPONSE_OK = "yes\n";
	27	private static final String RESPONSE_FAILED = "no\n";
	28
	29	@Context
	30	protected KeycloakSession session;
	31
	32	@Context
	33	protected ClientConnection clientConnection;
	34
	35	@Context
	36	protected HttpRequest request;
	37
	38	@Context
	39	protected HttpHeaders headers;
	40
	41	@Context
	42	protected UriInfo uriInfo;
	43
	44	protected RealmModel realm;
	45	protected EventBuilder event;
	46	protected ClientModel client;
f75caf	47	protected AuthenticatedClientSessionModel clientSession;
7f7e0c	48
MP	49	public ValidateEndpoint(RealmModel realm, EventBuilder event) {
	50	this.realm = realm;
	51	this.event = event;
	52	}
	53
	54	@GET
	55	@NoCache
	56	public Response build() {
	57	MultivaluedMap<String, String> params = uriInfo.getQueryParameters();
	58	String service = params.getFirst(CASLoginProtocol.SERVICE_PARAM);
	59	String ticket = params.getFirst(CASLoginProtocol.TICKET_PARAM);
7124d2	60	boolean renew = params.containsKey(CASLoginProtocol.RENEW_PARAM);
7f7e0c	61
MP	62	event.event(EventType.CODE_TO_TOKEN);
	63
	64	try {
	65	checkSsl();
	66	checkRealm();
	67	checkClient(service);
	68
	69	checkTicket(ticket, renew);
	70
	71	event.success();
	72	return successResponse();
352436	73	} catch (CASValidationException e) {
7f7e0c	74	return errorResponse(e);
MP	75	}
	76	}
	77
	78	protected Response successResponse() {
	79	return Response.ok(RESPONSE_OK).type(MediaType.TEXT_PLAIN).build();
	80	}
	81
352436	82	protected Response errorResponse(CASValidationException e) {
MP	83	return Response.status(e.getStatus()).entity(RESPONSE_FAILED).type(MediaType.TEXT_PLAIN).build();
7f7e0c	84	}
MP	85
	86	private void checkSsl() {
	87	if (!uriInfo.getBaseUri().getScheme().equals("https") && realm.getSslRequired().isRequired(clientConnection)) {
352436	88	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "HTTPS required", Response.Status.FORBIDDEN);
7f7e0c	89	}
MP	90	}
	91
	92	private void checkRealm() {
	93	if (!realm.isEnabled()) {
352436	94	throw new CASValidationException(CASErrorCode.INTERNAL_ERROR, "Realm not enabled", Response.Status.FORBIDDEN);
7f7e0c	95	}
MP	96	}
	97
	98	private void checkClient(String service) {
	99	if (service == null) {
	100	event.error(Errors.INVALID_REQUEST);
352436	101	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.SERVICE_PARAM, Response.Status.BAD_REQUEST);
7f7e0c	102	}
MP	103
	104	client = realm.getClients().stream()
	105	.filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
	106	.filter(c -> RedirectUtils.verifyRedirectUri(uriInfo, service, realm, c) != null)
	107	.findFirst().orElse(null);
	108	if (client == null) {
	109	event.error(Errors.CLIENT_NOT_FOUND);
352436	110	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client not found", Response.Status.BAD_REQUEST);
7f7e0c	111	}
MP	112
	113	if (!client.isEnabled()) {
	114	event.error(Errors.CLIENT_DISABLED);
352436	115	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client disabled", Response.Status.BAD_REQUEST);
7f7e0c	116	}
MP	117
	118	event.client(client.getClientId());
	119
	120	session.getContext().setClient(client);
	121	}
	122
	123	private void checkTicket(String ticket, boolean requireReauth) {
352436	124	if (ticket == null) {
7f7e0c	125	event.error(Errors.INVALID_CODE);
352436	126	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.TICKET_PARAM, Response.Status.BAD_REQUEST);
MP	127	}
	128	if (!ticket.startsWith(CASLoginProtocol.SERVICE_TICKET_PREFIX)) {
	129	event.error(Errors.INVALID_CODE);
	130	throw new CASValidationException(CASErrorCode.INVALID_TICKET_SPEC, "Malformed service ticket", Response.Status.BAD_REQUEST);
7f7e0c	131	}
MP	132
	133	String code = ticket.substring(CASLoginProtocol.SERVICE_TICKET_PREFIX.length());
	134
f75caf	135	String[] parts = code.split("\\.");
MP	136	if (parts.length == 4) {
	137	event.detail(Details.CODE_ID, parts[2]);
	138	}
	139
5570d4	140	ClientSessionCode.ParseResult<AuthenticatedClientSessionModel> parseResult;
MP	141	try {
	142	// Keycloak >3.4 branch: Parameter event was added to ClientSessionCode.parseResult
	143	Method parseResultMethod = ClientSessionCode.class.getMethod("parseResult",
	144	String.class, KeycloakSession.class, RealmModel.class, EventBuilder.class, Class.class);
	145	parseResult = (ClientSessionCode.ParseResult<AuthenticatedClientSessionModel>) parseResultMethod.invoke(
	146	null, code, session, realm, event, AuthenticatedClientSessionModel.class);
	147	} catch (ReflectiveOperationException e) {
	148	// Keycloak <=3.3 branch
	149	parseResult = ClientSessionCode.parseResult(code, session, realm, AuthenticatedClientSessionModel.class);
	150	}
f75caf	151	if (parseResult.isAuthSessionNotFound() \|\| parseResult.isIllegalHash()) {
7f7e0c	152	event.error(Errors.INVALID_CODE);
f75caf	153
MP	154	// Attempt to use same code twice should invalidate existing clientSession
	155	AuthenticatedClientSessionModel clientSession = parseResult.getClientSession();
	156	if (clientSession != null) {
	157	clientSession.setUserSession(null);
7f7e0c	158	}
f75caf	159
352436	160	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code not valid", Response.Status.BAD_REQUEST);
7f7e0c	161	}
MP	162
	163	clientSession = parseResult.getClientSession();
	164
5570d4	165	try {
MP	166	// Keycloak >3.4 branch: Method isExpiredToken was added
	167	Method isExpiredToken = ClientSessionCode.ParseResult.class.getMethod("isExpiredToken");
	168	if ((Boolean) isExpiredToken.invoke(parseResult)) {
	169	event.error(Errors.EXPIRED_CODE);
	170	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code is expired", Response.Status.BAD_REQUEST);
	171	}
	172	} catch (ReflectiveOperationException e) {
	173	// Keycloak <=3.3 branch
	174	if (!parseResult.getCode().isValid(AuthenticatedClientSessionModel.Action.CODE_TO_TOKEN.name(), ClientSessionCode.ActionType.CLIENT)) {
	175	event.error(Errors.INVALID_CODE);
	176	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code is expired", Response.Status.BAD_REQUEST);
	177	}
	178
	179	parseResult.getCode().setAction(null);
7f7e0c	180	}
MP	181
57a6c1	182	clientSession.setNote(CASLoginProtocol.SESSION_SERVICE_TICKET, ticket);
7f7e0c	183
7124d2	184	if (requireReauth && AuthenticationManager.isSSOAuthentication(clientSession)) {
MP	185	event.error(Errors.SESSION_EXPIRED);
	186	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Interactive authentication was requested but not performed", Response.Status.BAD_REQUEST);
	187	}
	188
7f7e0c	189	UserSessionModel userSession = clientSession.getUserSession();
MP	190
	191	if (userSession == null) {
	192	event.error(Errors.USER_SESSION_NOT_FOUND);
352436	193	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User session not found", Response.Status.BAD_REQUEST);
7f7e0c	194	}
MP	195
	196	UserModel user = userSession.getUser();
	197	if (user == null) {
	198	event.error(Errors.USER_NOT_FOUND);
352436	199	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User not found", Response.Status.BAD_REQUEST);
7f7e0c	200	}
MP	201	if (!user.isEnabled()) {
	202	event.error(Errors.USER_DISABLED);
352436	203	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User disabled", Response.Status.BAD_REQUEST);
7f7e0c	204	}
MP	205
	206	event.user(userSession.getUser());
	207	event.session(userSession.getId());
	208
	209	if (!client.getClientId().equals(clientSession.getClient().getClientId())) {
	210	event.error(Errors.INVALID_CODE);
352436	211	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Auth error", Response.Status.BAD_REQUEST);
7f7e0c	212	}
MP	213
	214	if (!AuthenticationManager.isSessionValid(realm, userSession)) {
	215	event.error(Errors.USER_SESSION_NOT_FOUND);
352436	216	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Session not active", Response.Status.BAD_REQUEST);
7f7e0c	217	}
MP	218
	219	}
	220	}