modules/keycloak-protocol-cas

Matthias Piepkorn

2018-05-26 8d0a311777a5600d8a562151b2a93f8cd9185d63

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.*;
	21
	22	public class ValidateEndpoint {
57a6c1	23	protected static final Logger logger = Logger.getLogger(ValidateEndpoint.class);
7f7e0c	24
MP	25	private static final String RESPONSE_OK = "yes\n";
	26	private static final String RESPONSE_FAILED = "no\n";
	27
	28	@Context
	29	protected KeycloakSession session;
	30
	31	@Context
	32	protected ClientConnection clientConnection;
	33
	34	@Context
	35	protected HttpRequest request;
	36
	37	@Context
	38	protected HttpHeaders headers;
	39
	40	@Context
	41	protected UriInfo uriInfo;
	42
	43	protected RealmModel realm;
	44	protected EventBuilder event;
	45	protected ClientModel client;
f75caf	46	protected AuthenticatedClientSessionModel clientSession;
7f7e0c	47
MP	48	public ValidateEndpoint(RealmModel realm, EventBuilder event) {
	49	this.realm = realm;
	50	this.event = event;
	51	}
	52
	53	@GET
	54	@NoCache
	55	public Response build() {
	56	MultivaluedMap<String, String> params = uriInfo.getQueryParameters();
	57	String service = params.getFirst(CASLoginProtocol.SERVICE_PARAM);
	58	String ticket = params.getFirst(CASLoginProtocol.TICKET_PARAM);
7124d2	59	boolean renew = params.containsKey(CASLoginProtocol.RENEW_PARAM);
7f7e0c	60
MP	61	event.event(EventType.CODE_TO_TOKEN);
	62
	63	try {
	64	checkSsl();
	65	checkRealm();
	66	checkClient(service);
	67
	68	checkTicket(ticket, renew);
	69
	70	event.success();
	71	return successResponse();
352436	72	} catch (CASValidationException e) {
7f7e0c	73	return errorResponse(e);
MP	74	}
	75	}
	76
	77	protected Response successResponse() {
	78	return Response.ok(RESPONSE_OK).type(MediaType.TEXT_PLAIN).build();
	79	}
	80
352436	81	protected Response errorResponse(CASValidationException e) {
MP	82	return Response.status(e.getStatus()).entity(RESPONSE_FAILED).type(MediaType.TEXT_PLAIN).build();
7f7e0c	83	}
MP	84
	85	private void checkSsl() {
	86	if (!uriInfo.getBaseUri().getScheme().equals("https") && realm.getSslRequired().isRequired(clientConnection)) {
352436	87	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "HTTPS required", Response.Status.FORBIDDEN);
7f7e0c	88	}
MP	89	}
	90
	91	private void checkRealm() {
	92	if (!realm.isEnabled()) {
352436	93	throw new CASValidationException(CASErrorCode.INTERNAL_ERROR, "Realm not enabled", Response.Status.FORBIDDEN);
7f7e0c	94	}
MP	95	}
	96
	97	private void checkClient(String service) {
	98	if (service == null) {
	99	event.error(Errors.INVALID_REQUEST);
352436	100	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.SERVICE_PARAM, Response.Status.BAD_REQUEST);
7f7e0c	101	}
MP	102
	103	client = realm.getClients().stream()
	104	.filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
	105	.filter(c -> RedirectUtils.verifyRedirectUri(uriInfo, service, realm, c) != null)
	106	.findFirst().orElse(null);
	107	if (client == null) {
	108	event.error(Errors.CLIENT_NOT_FOUND);
352436	109	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client not found", Response.Status.BAD_REQUEST);
7f7e0c	110	}
MP	111
	112	if (!client.isEnabled()) {
	113	event.error(Errors.CLIENT_DISABLED);
352436	114	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client disabled", Response.Status.BAD_REQUEST);
7f7e0c	115	}
MP	116
	117	event.client(client.getClientId());
	118
	119	session.getContext().setClient(client);
	120	}
	121
	122	private void checkTicket(String ticket, boolean requireReauth) {
352436	123	if (ticket == null) {
7f7e0c	124	event.error(Errors.INVALID_CODE);
352436	125	throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.TICKET_PARAM, Response.Status.BAD_REQUEST);
MP	126	}
	127	if (!ticket.startsWith(CASLoginProtocol.SERVICE_TICKET_PREFIX)) {
	128	event.error(Errors.INVALID_CODE);
	129	throw new CASValidationException(CASErrorCode.INVALID_TICKET_SPEC, "Malformed service ticket", Response.Status.BAD_REQUEST);
7f7e0c	130	}
MP	131
	132	String code = ticket.substring(CASLoginProtocol.SERVICE_TICKET_PREFIX.length());
	133
f75caf	134	String[] parts = code.split("\\.");
MP	135	if (parts.length == 4) {
	136	event.detail(Details.CODE_ID, parts[2]);
	137	}
	138
6638b8	139	ClientSessionCode.ParseResult<AuthenticatedClientSessionModel> parseResult = ClientSessionCode.parseResult(code, null, session, realm, client, event, AuthenticatedClientSessionModel.class);
f75caf	140	if (parseResult.isAuthSessionNotFound() \|\| parseResult.isIllegalHash()) {
7f7e0c	141	event.error(Errors.INVALID_CODE);
f75caf	142
MP	143	// Attempt to use same code twice should invalidate existing clientSession
	144	AuthenticatedClientSessionModel clientSession = parseResult.getClientSession();
	145	if (clientSession != null) {
6638b8	146	clientSession.detachFromUserSession();
7f7e0c	147	}
f75caf	148
352436	149	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code not valid", Response.Status.BAD_REQUEST);
7f7e0c	150	}
MP	151
	152	clientSession = parseResult.getClientSession();
	153
6638b8	154	if (parseResult.isExpiredToken()) {
MP	155	event.error(Errors.EXPIRED_CODE);
	156	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code is expired", Response.Status.BAD_REQUEST);
7f7e0c	157	}
MP	158
57a6c1	159	clientSession.setNote(CASLoginProtocol.SESSION_SERVICE_TICKET, ticket);
7f7e0c	160
7124d2	161	if (requireReauth && AuthenticationManager.isSSOAuthentication(clientSession)) {
MP	162	event.error(Errors.SESSION_EXPIRED);
	163	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Interactive authentication was requested but not performed", Response.Status.BAD_REQUEST);
	164	}
	165
7f7e0c	166	UserSessionModel userSession = clientSession.getUserSession();
MP	167
	168	if (userSession == null) {
	169	event.error(Errors.USER_SESSION_NOT_FOUND);
352436	170	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User session not found", Response.Status.BAD_REQUEST);
7f7e0c	171	}
MP	172
	173	UserModel user = userSession.getUser();
	174	if (user == null) {
	175	event.error(Errors.USER_NOT_FOUND);
352436	176	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User not found", Response.Status.BAD_REQUEST);
7f7e0c	177	}
MP	178	if (!user.isEnabled()) {
	179	event.error(Errors.USER_DISABLED);
352436	180	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User disabled", Response.Status.BAD_REQUEST);
7f7e0c	181	}
MP	182
	183	event.user(userSession.getUser());
	184	event.session(userSession.getId());
	185
	186	if (!client.getClientId().equals(clientSession.getClient().getClientId())) {
	187	event.error(Errors.INVALID_CODE);
352436	188	throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Auth error", Response.Status.BAD_REQUEST);
7f7e0c	189	}
MP	190
	191	if (!AuthenticationManager.isSessionValid(realm, userSession)) {
	192	event.error(Errors.USER_SESSION_NOT_FOUND);
352436	193	throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Session not active", Response.Status.BAD_REQUEST);
7f7e0c	194	}
MP	195
	196	}
	197	}