mirror of https://github.com/jacekkow/keycloak-protocol-cas

Jacek Kowalski
2023-01-24 d1c4e0e4c71b679e6a43e905806839d1b01ebaf7
commit | author | age
7f7e0c 1 package org.keycloak.protocol.cas;
MP 2
57a6c1 3 import org.apache.http.HttpEntity;
MP 4 import org.jboss.logging.Logger;
7f7e0c 5 import org.keycloak.common.util.KeycloakUriBuilder;
c140ce 6 import org.keycloak.common.util.Time;
7f7e0c 7 import org.keycloak.events.EventBuilder;
MP 8 import org.keycloak.events.EventType;
4a6620 9 import org.keycloak.forms.login.LoginFormsProvider;
7f7e0c 10 import org.keycloak.models.*;
MP 11 import org.keycloak.protocol.LoginProtocol;
57a6c1 12 import org.keycloak.protocol.cas.utils.LogoutHelper;
c140ce 13 import org.keycloak.protocol.oidc.utils.OAuth2Code;
MP 14 import org.keycloak.protocol.oidc.utils.OAuth2CodeParser;
3882f0 15 import org.keycloak.services.ErrorPage;
7f7e0c 16 import org.keycloak.services.managers.ResourceAdminManager;
f75caf 17 import org.keycloak.sessions.AuthenticationSessionModel;
7f7e0c 18
MP 19 import javax.ws.rs.core.HttpHeaders;
20 import javax.ws.rs.core.Response;
21 import javax.ws.rs.core.UriInfo;
57a6c1 22 import java.io.IOException;
7f7e0c 23 import java.net.URI;
c140ce 24 import java.util.UUID;
7f7e0c 25
MP 26 public class CASLoginProtocol implements LoginProtocol {
57a6c1 27     private static final Logger logger = Logger.getLogger(CASLoginProtocol.class);
MP 28
7f7e0c 29     public static final String LOGIN_PROTOCOL = "cas";
MP 30
31     public static final String SERVICE_PARAM = "service";
74023a 32     public static final String TARGET_PARAM = "TARGET";
7f7e0c 33     public static final String RENEW_PARAM = "renew";
MP 34     public static final String GATEWAY_PARAM = "gateway";
35     public static final String TICKET_PARAM = "ticket";
36     public static final String FORMAT_PARAM = "format";
37
38     public static final String TICKET_RESPONSE_PARAM = "ticket";
891484 39     public static final String SAMLART_RESPONSE_PARAM = "SAMLart";
7f7e0c 40
MP 41     public static final String SERVICE_TICKET_PREFIX = "ST-";
57a6c1 42     public static final String SESSION_SERVICE_TICKET = "service_ticket";
4a6620 43
MP 44     public static final String LOGOUT_REDIRECT_URI = "CAS_LOGOUT_REDIRECT_URI";
7f7e0c 45
MP 46     protected KeycloakSession session;
47     protected RealmModel realm;
48     protected UriInfo uriInfo;
49     protected HttpHeaders headers;
50     protected EventBuilder event;
51
7124d2 52     public CASLoginProtocol(KeycloakSession session, RealmModel realm, UriInfo uriInfo, HttpHeaders headers, EventBuilder event) {
7f7e0c 53         this.session = session;
MP 54         this.realm = realm;
55         this.uriInfo = uriInfo;
56         this.headers = headers;
57         this.event = event;
58     }
59
60     public CASLoginProtocol() {
61     }
62
63     @Override
64     public CASLoginProtocol setSession(KeycloakSession session) {
65         this.session = session;
66         return this;
67     }
68
69     @Override
70     public CASLoginProtocol setRealm(RealmModel realm) {
71         this.realm = realm;
72         return this;
73     }
74
75     @Override
76     public CASLoginProtocol setUriInfo(UriInfo uriInfo) {
77         this.uriInfo = uriInfo;
78         return this;
79     }
80
81     @Override
82     public CASLoginProtocol setHttpHeaders(HttpHeaders headers) {
83         this.headers = headers;
84         return this;
85     }
86
87     @Override
88     public CASLoginProtocol setEventBuilder(EventBuilder event) {
89         this.event = event;
90         return this;
91     }
92
93     @Override
c140ce 94     public Response authenticated(AuthenticationSessionModel authSession, UserSessionModel userSession, ClientSessionContext clientSessionCtx) {
b8d686 95         AuthenticatedClientSessionModel clientSession = clientSessionCtx.getClientSession();
7f7e0c 96
c140ce 97         String service = authSession.getRedirectUri();
7f7e0c 98         //TODO validate service
5570d4 99
8b93a7 100         OAuth2Code codeData = new OAuth2Code(UUID.randomUUID().toString(),
c140ce 101                 Time.currentTime() + userSession.getRealm().getAccessCodeLifespan(),
MP 102                 null, null, authSession.getRedirectUri(), null, null);
103         String code = OAuth2CodeParser.persistCode(session, clientSession, codeData);
104
7f7e0c 105         KeycloakUriBuilder uriBuilder = KeycloakUriBuilder.fromUri(service);
891484 106
DR 107         String loginTicket = SERVICE_TICKET_PREFIX + code;
108
109         if (authSession.getClientNotes().containsKey(CASLoginProtocol.TARGET_PARAM)) {
110             // This was a SAML 1.1 auth request so return the ticket ID as "SAMLart" instead of "ticket"
111             uriBuilder.queryParam(SAMLART_RESPONSE_PARAM, loginTicket);
112         } else {
113             uriBuilder.queryParam(TICKET_RESPONSE_PARAM, loginTicket);
114         }
7f7e0c 115
MP 116         URI redirectUri = uriBuilder.build();
117
118         Response.ResponseBuilder location = Response.status(302).location(redirectUri);
119         return location.build();
120     }
121
122     @Override
f75caf 123     public Response sendError(AuthenticationSessionModel authSession, Error error) {
3882f0 124         if (authSession.getClientNotes().containsKey(CASLoginProtocol.GATEWAY_PARAM)) {
JK 125             if (error == Error.PASSIVE_INTERACTION_REQUIRED || error == Error.PASSIVE_LOGIN_REQUIRED) {
126                 return Response.status(302).location(URI.create(authSession.getRedirectUri())).build();
127             }
128         }
129         return ErrorPage.error(session, authSession, Response.Status.INTERNAL_SERVER_ERROR, error.name());
7f7e0c 130     }
MP 131
132     @Override
0ec410 133     public Response backchannelLogout(UserSessionModel userSession, AuthenticatedClientSessionModel clientSession) {
57a6c1 134         String logoutUrl = clientSession.getRedirectUri();
MP 135         String serviceTicket = clientSession.getNote(CASLoginProtocol.SESSION_SERVICE_TICKET);
136         //check if session is fully authenticated (i.e. serviceValidate has been called)
137         if (serviceTicket != null && !serviceTicket.isEmpty()) {
138             sendSingleLogoutRequest(logoutUrl, serviceTicket);
139         }
7f7e0c 140         ClientModel client = clientSession.getClient();
019db5 141         new ResourceAdminManager(session).logoutClientSession(realm, client, clientSession);
0ec410 142         return Response.ok().build();
7f7e0c 143     }
MP 144
57a6c1 145     private void sendSingleLogoutRequest(String logoutUrl, String serviceTicket) {
MP 146         try {
281a7e 147             HttpEntity requestEntity = LogoutHelper.buildSingleLogoutRequest(serviceTicket);
57a6c1 148             LogoutHelper.postWithRedirect(session, logoutUrl, requestEntity);
MP 149             logger.debug("Sent CAS single logout for service " + logoutUrl);
150         } catch (IOException e) {
151             logger.warn("Failed to call CAS service for logout: " + logoutUrl, e);
152         }
153     }
154
7f7e0c 155     @Override
f75caf 156     public Response frontchannelLogout(UserSessionModel userSession, AuthenticatedClientSessionModel clientSession) {
7f7e0c 157         // todo oidc redirect support
MP 158         throw new RuntimeException("NOT IMPLEMENTED");
159     }
160
161     @Override
d5f868 162     public Response finishBrowserLogout(UserSessionModel userSession, AuthenticationSessionModel logoutSession) {
4a6620 163         String redirectUri = userSession.getNote(CASLoginProtocol.LOGOUT_REDIRECT_URI);
MP 164
7f7e0c 165         event.event(EventType.LOGOUT);
MP 166         event.user(userSession.getUser()).session(userSession).success();
cbb2f2 167
4a6620 168         if (redirectUri != null) {
cbb2f2 169             return Response.status(302).location(URI.create(redirectUri)).build();
4a6620 170         } else {
cbb2f2 171             LoginFormsProvider infoPage = session.getProvider(LoginFormsProvider.class).setSuccess("Logout successful");
4a6620 172             infoPage.setAttribute("skipLink", true);
cbb2f2 173             return infoPage.createInfoPage();
4a6620 174         }
7f7e0c 175     }
MP 176
177     @Override
f75caf 178     public boolean requireReauthentication(UserSessionModel userSession, AuthenticationSessionModel authSession) {
MP 179         return "true".equals(authSession.getClientNote(CASLoginProtocol.RENEW_PARAM));
7f7e0c 180     }
MP 181
182     @Override
183     public void close() {
184
185     }
186 }