package org.keycloak.protocol.cas.endpoints;
|
|
import jakarta.ws.rs.core.Response;
|
import org.jboss.logging.Logger;
|
import org.keycloak.events.Details;
|
import org.keycloak.events.Errors;
|
import org.keycloak.events.EventBuilder;
|
import org.keycloak.common.util.Time;
|
import org.keycloak.models.*;
|
import org.keycloak.protocol.ProtocolMapper;
|
import org.keycloak.protocol.cas.CASLoginProtocol;
|
import org.keycloak.protocol.cas.mappers.CASAttributeMapper;
|
import org.keycloak.protocol.cas.representations.CASErrorCode;
|
import org.keycloak.protocol.cas.utils.CASValidationException;
|
import org.keycloak.protocol.oidc.utils.OAuth2Code;
|
import org.keycloak.protocol.oidc.utils.RedirectUtils;
|
import org.keycloak.services.managers.AuthenticationManager;
|
import org.keycloak.services.managers.UserSessionCrossDCManager;
|
import org.keycloak.services.util.DefaultClientSessionContext;
|
|
import java.util.HashMap;
|
import java.util.Map;
|
import java.util.Set;
|
import java.util.UUID;
|
import java.util.regex.Pattern;
|
import java.util.stream.Collectors;
|
import org.apache.http.client.utils.URIBuilder;
|
import org.apache.http.client.methods.HttpGet;
|
import org.apache.http.HttpResponse;
|
import org.apache.http.impl.client.HttpClientBuilder;
|
|
public abstract class AbstractValidateEndpoint {
|
protected final Logger logger = Logger.getLogger(getClass());
|
private static final Pattern DOT = Pattern.compile("\\.");
|
protected KeycloakSession session;
|
protected RealmModel realm;
|
protected EventBuilder event;
|
protected ClientModel client;
|
protected AuthenticatedClientSessionModel clientSession;
|
protected String pgtIou;
|
|
public AbstractValidateEndpoint(KeycloakSession session, RealmModel realm, EventBuilder event) {
|
this.session = session;
|
this.realm = realm;
|
this.event = event;
|
}
|
|
protected void checkSsl() {
|
if (!session.getContext().getUri().getBaseUri().getScheme().equals("https") && realm.getSslRequired().isRequired(session.getContext().getConnection())) {
|
throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "HTTPS required", Response.Status.FORBIDDEN);
|
}
|
}
|
|
protected void checkRealm() {
|
if (!realm.isEnabled()) {
|
throw new CASValidationException(CASErrorCode.INTERNAL_ERROR, "Realm not enabled", Response.Status.FORBIDDEN);
|
}
|
}
|
|
protected void checkClient(String service) {
|
if (service == null) {
|
event.error(Errors.INVALID_REQUEST);
|
throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.SERVICE_PARAM, Response.Status.BAD_REQUEST);
|
}
|
|
event.detail(Details.REDIRECT_URI, service);
|
|
client = realm.getClientsStream()
|
.filter(c -> CASLoginProtocol.LOGIN_PROTOCOL.equals(c.getProtocol()))
|
.filter(c -> RedirectUtils.verifyRedirectUri(session, service, c) != null)
|
.findFirst().orElse(null);
|
if (client == null) {
|
event.error(Errors.CLIENT_NOT_FOUND);
|
throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client not found", Response.Status.BAD_REQUEST);
|
}
|
|
if (!client.isEnabled()) {
|
event.error(Errors.CLIENT_DISABLED);
|
throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Client disabled", Response.Status.BAD_REQUEST);
|
}
|
|
event.client(client.getClientId());
|
|
session.getContext().setClient(client);
|
}
|
|
protected void checkTicket(String ticket, String prefix, boolean requireReauth) {
|
if (ticket == null) {
|
event.error(Errors.INVALID_CODE);
|
throw new CASValidationException(CASErrorCode.INVALID_REQUEST, "Missing parameter: " + CASLoginProtocol.TICKET_PARAM, Response.Status.BAD_REQUEST);
|
}
|
|
if (!ticket.startsWith(prefix)) {
|
event.error(Errors.INVALID_CODE);
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET_SPEC, "Malformed service ticket", Response.Status.BAD_REQUEST);
|
}
|
|
boolean isReuse = ticket.startsWith(CASLoginProtocol.PROXY_GRANTING_TICKET_PREFIX);
|
|
String[] parsed = DOT.split(ticket.substring(prefix.length()), 3);
|
if (parsed.length != 3) {
|
event.error(Errors.INVALID_CODE);
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET_SPEC, "Invalid format of the code", Response.Status.BAD_REQUEST);
|
}
|
|
String codeUUID = parsed[0];
|
String userSessionId = parsed[1];
|
String clientUUID = parsed[2];
|
|
event.detail(Details.CODE_ID, userSessionId);
|
event.session(userSessionId);
|
|
// Retrieve UserSession
|
UserSessionModel userSession = new UserSessionCrossDCManager(session).getUserSessionWithClient(realm, userSessionId, clientUUID);
|
if (userSession == null) {
|
// Needed to track if code is invalid
|
userSession = session.sessions().getUserSession(realm, userSessionId);
|
if (userSession == null) {
|
event.error(Errors.USER_SESSION_NOT_FOUND);
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User session not found", Response.Status.BAD_REQUEST);
|
}
|
}
|
|
clientSession = userSession.getAuthenticatedClientSessionByClient(clientUUID);
|
if (clientSession == null) {
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code not valid", Response.Status.BAD_REQUEST);
|
}
|
|
SingleUseObjectProvider codeStore = session.singleUseObjects();
|
Map<String, String> codeDataSerialized = isReuse ? codeStore.get(prefix + codeUUID) : codeStore.remove(prefix + codeUUID);
|
|
// Either code not available
|
if (codeDataSerialized == null) {
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code already used", Response.Status.BAD_REQUEST);
|
}
|
|
OAuth2Code codeData = OAuth2Code.deserializeCode(codeDataSerialized);
|
|
String persistedUserSessionId = codeData.getUserSessionId();
|
if (!userSessionId.equals(persistedUserSessionId)) {
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code "+codeUUID+"' is bound to a different session", Response.Status.BAD_REQUEST);
|
}
|
|
// Finally doublecheck if code is not expired
|
int currentTime = Time.currentTime();
|
if (currentTime > codeData.getExpiration()) {
|
event.error(Errors.EXPIRED_CODE);
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Code is expired", Response.Status.BAD_REQUEST);
|
}
|
|
clientSession.setNote(prefix, ticket);
|
|
if (requireReauth && AuthenticationManager.isSSOAuthentication(clientSession)) {
|
event.error(Errors.SESSION_EXPIRED);
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Interactive authentication was requested but not performed", Response.Status.BAD_REQUEST);
|
}
|
|
UserModel user = userSession.getUser();
|
if (user == null) {
|
event.error(Errors.USER_NOT_FOUND);
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User not found", Response.Status.BAD_REQUEST);
|
}
|
if (!user.isEnabled()) {
|
event.error(Errors.USER_DISABLED);
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET, "User disabled", Response.Status.BAD_REQUEST);
|
}
|
|
event.user(userSession.getUser());
|
event.session(userSession.getId());
|
|
if (client == null) {
|
client = clientSession.getClient();
|
} else {
|
if (!client.getClientId().equals(clientSession.getClient().getClientId())) {
|
event.error(Errors.INVALID_CODE);
|
throw new CASValidationException(CASErrorCode.INVALID_SERVICE, "Auth error", Response.Status.BAD_REQUEST);
|
}
|
}
|
|
if (!AuthenticationManager.isSessionValid(realm, userSession)) {
|
event.error(Errors.USER_SESSION_NOT_FOUND);
|
throw new CASValidationException(CASErrorCode.INVALID_TICKET, "Session not active", Response.Status.BAD_REQUEST);
|
}
|
|
}
|
|
protected void createProxyGrant(String pgtUrl) {
|
if ( RedirectUtils.verifyRedirectUri(session, pgtUrl, client) == null ) {
|
event.error(Errors.INVALID_REQUEST);
|
throw new CASValidationException(CASErrorCode.INVALID_PROXY_CALLBACK, "Proxy callback is invalid", Response.Status.BAD_REQUEST);
|
}
|
|
String pgtIou = getPGTIOU();
|
String pgtId = getPGT(session, clientSession, pgtUrl);
|
|
try {
|
HttpResponse response = HttpClientBuilder.create().build().execute(
|
new HttpGet(new URIBuilder(pgtUrl).setParameter("pgtIou",pgtIou).setParameter("pgtId",pgtId).build())
|
);
|
|
if (response.getStatusLine().getStatusCode() != 200) {
|
throw new Exception();
|
}
|
|
this.pgtIou = pgtIou;
|
} catch (Exception e) {
|
event.error(Errors.INVALID_REQUEST);
|
throw new CASValidationException(CASErrorCode.PROXY_CALLBACK_ERROR, "Proxy callback return with error", Response.Status.BAD_REQUEST);
|
}
|
}
|
|
protected Map<String, Object> getUserAttributes() {
|
UserSessionModel userSession = clientSession.getUserSession();
|
// CAS protocol does not support scopes, so pass null scopeParam
|
ClientSessionContext clientSessionCtx = DefaultClientSessionContext.fromClientSessionAndScopeParameter(clientSession, null, session);
|
|
Set<ProtocolMapperModel> mappings = clientSessionCtx.getProtocolMappersStream().collect(Collectors.toSet());
|
KeycloakSessionFactory sessionFactory = session.getKeycloakSessionFactory();
|
Map<String, Object> attributes = new HashMap<>();
|
for (ProtocolMapperModel mapping : mappings) {
|
ProtocolMapper mapper = (ProtocolMapper) sessionFactory.getProviderFactory(ProtocolMapper.class, mapping.getProtocolMapper());
|
if (mapper instanceof CASAttributeMapper) {
|
((CASAttributeMapper) mapper).setAttribute(attributes, mapping, userSession, session, clientSessionCtx);
|
}
|
}
|
return attributes;
|
}
|
|
protected String getPGTIOU()
|
{
|
return CASLoginProtocol.PROXY_GRANTING_TICKET_IOU_PREFIX + UUID.randomUUID().toString();
|
}
|
|
protected String getPGT(KeycloakSession session, AuthenticatedClientSessionModel clientSession, String pgtUrl)
|
{
|
return persistedTicket(pgtUrl, CASLoginProtocol.PROXY_GRANTING_TICKET_PREFIX);
|
}
|
|
protected String getPT(KeycloakSession session, AuthenticatedClientSessionModel clientSession, String targetService)
|
{
|
return persistedTicket(targetService, CASLoginProtocol.PROXY_TICKET_PREFIX);
|
}
|
|
protected String getST(String redirectUri)
|
{
|
return persistedTicket(redirectUri, CASLoginProtocol.SERVICE_TICKET_PREFIX);
|
}
|
|
public static String getST(KeycloakSession session, AuthenticatedClientSessionModel clientSession, String redirectUri)
|
{
|
ValidateEndpoint vp = new ValidateEndpoint(session,null,null);
|
vp.clientSession = clientSession;
|
return vp.getST(redirectUri);
|
}
|
|
protected String persistedTicket(String redirectUriParam, String prefix)
|
{
|
String key = UUID.randomUUID().toString();
|
UserSessionModel userSession = clientSession.getUserSession();
|
OAuth2Code codeData = new OAuth2Code(key, Time.currentTime() + userSession.getRealm().getAccessCodeLifespan(), null, null, redirectUriParam, null, null, userSession.getId());
|
session.singleUseObjects().put(prefix + key, clientSession.getUserSession().getRealm().getAccessCodeLifespan(), codeData.serializeCode());
|
return prefix + key + "." + clientSession.getUserSession().getId() + "." + clientSession.getClient().getId();
|
}
|
}
|
