modules/keycloak-protocol-cas

Jacek Kowalski

2024-06-21 508897529ff996bbf5bf2dec5c407517cc7eb520

commit \| author \| age
7f7e0c	1	package org.keycloak.protocol.cas;
MP	2
fdb9f6	3	import jakarta.ws.rs.core.HttpHeaders;
JK	4	import jakarta.ws.rs.core.Response;
	5	import jakarta.ws.rs.core.UriInfo;
57a6c1	6	import org.apache.http.HttpEntity;
MP	7	import org.jboss.logging.Logger;
7f7e0c	8	import org.keycloak.common.util.KeycloakUriBuilder;
b88dc3	9	import org.keycloak.events.Details;
7f7e0c	10	import org.keycloak.events.EventBuilder;
MP	11	import org.keycloak.events.EventType;
4a6620	12	import org.keycloak.forms.login.LoginFormsProvider;
7f7e0c	13	import org.keycloak.models.*;
MP	14	import org.keycloak.protocol.LoginProtocol;
5d7080	15	import org.keycloak.protocol.cas.endpoints.AbstractValidateEndpoint;
57a6c1	16	import org.keycloak.protocol.cas.utils.LogoutHelper;
3882f0	17	import org.keycloak.services.ErrorPage;
7f7e0c	18	import org.keycloak.services.managers.ResourceAdminManager;
f75caf	19	import org.keycloak.sessions.AuthenticationSessionModel;
7f7e0c	20
57a6c1	21	import java.io.IOException;
7f7e0c	22	import java.net.URI;
MP	23
	24	public class CASLoginProtocol implements LoginProtocol {
57a6c1	25	private static final Logger logger = Logger.getLogger(CASLoginProtocol.class);
MP	26
7f7e0c	27	public static final String LOGIN_PROTOCOL = "cas";
MP	28
	29	public static final String SERVICE_PARAM = "service";
74023a	30	public static final String TARGET_PARAM = "TARGET";
7f7e0c	31	public static final String RENEW_PARAM = "renew";
MP	32	public static final String GATEWAY_PARAM = "gateway";
	33	public static final String TICKET_PARAM = "ticket";
	34	public static final String FORMAT_PARAM = "format";
5d7080	35	public static final String PGTURL_PARAM = "pgtUrl";
ARW	36	public static final String TARGET_SERVICE_PARAM = "targetService";
	37	public static final String PGT_PARAM = "pgt";
7f7e0c	38
MP	39	public static final String TICKET_RESPONSE_PARAM = "ticket";
891484	40	public static final String SAMLART_RESPONSE_PARAM = "SAMLart";
7f7e0c	41
MP	42	public static final String SERVICE_TICKET_PREFIX = "ST-";
5d7080	43	public static final String PROXY_GRANTING_TICKET_IOU_PREFIX = "PGTIOU-";
ARW	44	public static final String PROXY_GRANTING_TICKET_PREFIX = "PGT-";
	45	public static final String PROXY_TICKET_PREFIX = "PT-";
57a6c1	46	public static final String SESSION_SERVICE_TICKET = "service_ticket";
4a6620	47
MP	48	public static final String LOGOUT_REDIRECT_URI = "CAS_LOGOUT_REDIRECT_URI";
7f7e0c	49
MP	50	protected KeycloakSession session;
	51	protected RealmModel realm;
	52	protected UriInfo uriInfo;
	53	protected HttpHeaders headers;
	54	protected EventBuilder event;
	55
7124d2	56	public CASLoginProtocol(KeycloakSession session, RealmModel realm, UriInfo uriInfo, HttpHeaders headers, EventBuilder event) {
7f7e0c	57	this.session = session;
MP	58	this.realm = realm;
	59	this.uriInfo = uriInfo;
	60	this.headers = headers;
	61	this.event = event;
	62	}
	63
	64	public CASLoginProtocol() {
	65	}
	66
	67	@Override
	68	public CASLoginProtocol setSession(KeycloakSession session) {
	69	this.session = session;
	70	return this;
	71	}
	72
	73	@Override
	74	public CASLoginProtocol setRealm(RealmModel realm) {
	75	this.realm = realm;
	76	return this;
	77	}
	78
	79	@Override
	80	public CASLoginProtocol setUriInfo(UriInfo uriInfo) {
	81	this.uriInfo = uriInfo;
	82	return this;
	83	}
	84
	85	@Override
	86	public CASLoginProtocol setHttpHeaders(HttpHeaders headers) {
	87	this.headers = headers;
	88	return this;
	89	}
	90
	91	@Override
	92	public CASLoginProtocol setEventBuilder(EventBuilder event) {
	93	this.event = event;
	94	return this;
	95	}
	96
	97	@Override
c140ce	98	public Response authenticated(AuthenticationSessionModel authSession, UserSessionModel userSession, ClientSessionContext clientSessionCtx) {
b8d686	99	AuthenticatedClientSessionModel clientSession = clientSessionCtx.getClientSession();
7f7e0c	100
c140ce	101	String service = authSession.getRedirectUri();
7f7e0c	102	//TODO validate service
5570d4	103
7f7e0c	104	KeycloakUriBuilder uriBuilder = KeycloakUriBuilder.fromUri(service);
891484	105
5d7080	106	String loginTicket = AbstractValidateEndpoint.getST(session, clientSession, service);
891484	107
DR	108	if (authSession.getClientNotes().containsKey(CASLoginProtocol.TARGET_PARAM)) {
	109	// This was a SAML 1.1 auth request so return the ticket ID as "SAMLart" instead of "ticket"
	110	uriBuilder.queryParam(SAMLART_RESPONSE_PARAM, loginTicket);
	111	} else {
	112	uriBuilder.queryParam(TICKET_RESPONSE_PARAM, loginTicket);
	113	}
7f7e0c	114
MP	115	URI redirectUri = uriBuilder.build();
	116
	117	Response.ResponseBuilder location = Response.status(302).location(redirectUri);
	118	return location.build();
	119	}
	120
	121	@Override
f75caf	122	public Response sendError(AuthenticationSessionModel authSession, Error error) {
3882f0	123	if (authSession.getClientNotes().containsKey(CASLoginProtocol.GATEWAY_PARAM)) {
JK	124	if (error == Error.PASSIVE_INTERACTION_REQUIRED \|\| error == Error.PASSIVE_LOGIN_REQUIRED) {
	125	return Response.status(302).location(URI.create(authSession.getRedirectUri())).build();
	126	}
	127	}
	128	return ErrorPage.error(session, authSession, Response.Status.INTERNAL_SERVER_ERROR, error.name());
7f7e0c	129	}
MP	130
	131	@Override
0ec410	132	public Response backchannelLogout(UserSessionModel userSession, AuthenticatedClientSessionModel clientSession) {
57a6c1	133	String logoutUrl = clientSession.getRedirectUri();
MP	134	String serviceTicket = clientSession.getNote(CASLoginProtocol.SESSION_SERVICE_TICKET);
	135	//check if session is fully authenticated (i.e. serviceValidate has been called)
	136	if (serviceTicket != null && !serviceTicket.isEmpty()) {
	137	sendSingleLogoutRequest(logoutUrl, serviceTicket);
	138	}
7f7e0c	139	ClientModel client = clientSession.getClient();
8560e4	140	new ResourceAdminManager(session).logoutClientSession(realm, client, clientSession).close();
0ec410	141	return Response.ok().build();
7f7e0c	142	}
MP	143
57a6c1	144	private void sendSingleLogoutRequest(String logoutUrl, String serviceTicket) {
MP	145	try {
281a7e	146	HttpEntity requestEntity = LogoutHelper.buildSingleLogoutRequest(serviceTicket);
57a6c1	147	LogoutHelper.postWithRedirect(session, logoutUrl, requestEntity);
MP	148	logger.debug("Sent CAS single logout for service " + logoutUrl);
	149	} catch (IOException e) {
	150	logger.warn("Failed to call CAS service for logout: " + logoutUrl, e);
	151	}
	152	}
	153
7f7e0c	154	@Override
f75caf	155	public Response frontchannelLogout(UserSessionModel userSession, AuthenticatedClientSessionModel clientSession) {
7f7e0c	156	// todo oidc redirect support
MP	157	throw new RuntimeException("NOT IMPLEMENTED");
	158	}
	159
	160	@Override
d5f868	161	public Response finishBrowserLogout(UserSessionModel userSession, AuthenticationSessionModel logoutSession) {
4a6620	162	String redirectUri = userSession.getNote(CASLoginProtocol.LOGOUT_REDIRECT_URI);
MP	163
b88dc3	164	event.event(EventType.LOGOUT)
AP	165	.user(userSession.getUser())
	166	.session(userSession)
	167	.detail(Details.USERNAME, userSession.getUser().getUsername());
cbb2f2	168
4a6620	169	if (redirectUri != null) {
b88dc3	170	event.detail(Details.REDIRECT_URI, redirectUri);
AP	171	event.success();
cbb2f2	172	return Response.status(302).location(URI.create(redirectUri)).build();
4a6620	173	}
b88dc3	174
AP	175	event.success();
	176
	177	LoginFormsProvider infoPage = session.getProvider(LoginFormsProvider.class).setSuccess("Logout successful");
	178	infoPage.setAttribute("skipLink", true);
	179	return infoPage.createInfoPage();
7f7e0c	180	}
MP	181
	182	@Override
f75caf	183	public boolean requireReauthentication(UserSessionModel userSession, AuthenticationSessionModel authSession) {
MP	184	return "true".equals(authSession.getClientNote(CASLoginProtocol.RENEW_PARAM));
7f7e0c	185	}
MP	186
	187	@Override
	188	public void close() {
	189
	190	}
	191	}