/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.keycloak.social.twitter;
import org.jboss.logging.Logger;
import org.keycloak.common.ClientConnection;
import org.keycloak.broker.oidc.OAuth2IdentityProviderConfig;
import org.keycloak.broker.provider.AbstractIdentityProvider;
import org.keycloak.broker.provider.AuthenticationRequest;
import org.keycloak.broker.provider.BrokeredIdentityContext;
import org.keycloak.broker.provider.IdentityBrokerException;
import org.keycloak.events.EventBuilder;
import org.keycloak.events.EventType;
import org.keycloak.models.ClientModel;
import org.keycloak.models.ClientSessionModel;
import org.keycloak.models.FederatedIdentityModel;
import org.keycloak.models.KeycloakSession;
import org.keycloak.models.RealmModel;
import org.keycloak.services.managers.ClientSessionCode;
import org.keycloak.services.messages.Messages;
import org.keycloak.services.ErrorPage;
import org.keycloak.social.SocialIdentityProvider;
import twitter4j.Twitter;
import twitter4j.TwitterFactory;
import twitter4j.auth.AccessToken;
import twitter4j.auth.RequestToken;
import javax.ws.rs.GET;
import javax.ws.rs.QueryParam;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.UriInfo;
import java.net.URI;
import static org.keycloak.models.ClientSessionModel.Action.AUTHENTICATE;
/**
* @author <a href="mailto:sthorger@redhat.com">Stian Thorgersen</a>
*/
public class TwitterIdentityProvider extends AbstractIdentityProvider<OAuth2IdentityProviderConfig> implements
SocialIdentityProvider<OAuth2IdentityProviderConfig> {
protected static final Logger logger = Logger.getLogger(TwitterIdentityProvider.class);
public TwitterIdentityProvider(OAuth2IdentityProviderConfig config) {
super(config);
}
@Override
public Object callback(RealmModel realm, AuthenticationCallback callback, EventBuilder event) {
return new Endpoint(realm, callback);
}
@Override
public Response performLogin(AuthenticationRequest request) {
try {
Twitter twitter = new TwitterFactory().getInstance();
twitter.setOAuthConsumer(getConfig().getClientId(), getConfig().getClientSecret());
URI uri = new URI(request.getRedirectUri() + "?state=" + request.getState());
RequestToken requestToken = twitter.getOAuthRequestToken(uri.toString());
ClientSessionModel clientSession = request.getClientSession();
clientSession.setNote("twitter_token", requestToken.getToken());
clientSession.setNote("twitter_tokenSecret", requestToken.getTokenSecret());
URI authenticationUrl = URI.create(requestToken.getAuthenticationURL());
return Response.temporaryRedirect(authenticationUrl).build();
} catch (Exception e) {
throw new IdentityBrokerException("Could send authentication request to twitter.", e);
}
}
protected class Endpoint {
protected RealmModel realm;
protected AuthenticationCallback callback;
@Context
protected KeycloakSession session;
@Context
protected ClientConnection clientConnection;
@Context
protected HttpHeaders headers;
@Context
protected UriInfo uriInfo;
public Endpoint(RealmModel realm, AuthenticationCallback callback) {
this.realm = realm;
this.callback = callback;
}
@GET
public Response authResponse(@QueryParam("state") String state,
@QueryParam("denied") String denied,
@QueryParam("oauth_verifier") String verifier) {
try {
Twitter twitter = new TwitterFactory().getInstance();
twitter.setOAuthConsumer(getConfig().getClientId(), getConfig().getClientSecret());
ClientSessionModel clientSession = parseClientSessionCode(state).getClientSession();
String twitterToken = clientSession.getNote("twitter_token");
String twitterSecret = clientSession.getNote("twitter_tokenSecret");
RequestToken requestToken = new RequestToken(twitterToken, twitterSecret);
AccessToken oAuthAccessToken = twitter.getOAuthAccessToken(requestToken, verifier);
twitter4j.User twitterUser = twitter.verifyCredentials();
BrokeredIdentityContext identity = new BrokeredIdentityContext(Long.toString(twitterUser.getId()));
identity.setIdp(TwitterIdentityProvider.this);
identity.setUsername(twitterUser.getScreenName());
identity.setName(twitterUser.getName());
StringBuilder tokenBuilder = new StringBuilder();
tokenBuilder.append("{");
tokenBuilder.append("\"oauth_token\":").append("\"").append(oAuthAccessToken.getToken()).append("\"").append(",");
tokenBuilder.append("\"oauth_token_secret\":").append("\"").append(oAuthAccessToken.getTokenSecret()).append("\"").append(",");
tokenBuilder.append("\"screen_name\":").append("\"").append(oAuthAccessToken.getScreenName()).append("\"").append(",");
tokenBuilder.append("\"user_id\":").append("\"").append(oAuthAccessToken.getUserId()).append("\"");
tokenBuilder.append("}");
identity.setToken(tokenBuilder.toString());
identity.setCode(state);
identity.setIdpConfig(getConfig());
return callback.authenticated(identity);
} catch (Exception e) {
logger.error("Could get user profile from twitter.", e);
}
EventBuilder event = new EventBuilder(realm, session, clientConnection);
event.event(EventType.LOGIN);
event.error("twitter_login_failed");
return ErrorPage.error(session, Messages.UNEXPECTED_ERROR_HANDLING_RESPONSE);
}
private ClientSessionCode parseClientSessionCode(String code) {
ClientSessionCode clientCode = ClientSessionCode.parse(code, this.session, this.realm);
if (clientCode != null && clientCode.isValid(AUTHENTICATE.name())) {
ClientSessionModel clientSession = clientCode.getClientSession();
if (clientSession != null) {
ClientModel client = clientSession.getClient();
if (client == null) {
throw new IdentityBrokerException("Invalid client");
}
logger.debugf("Got authorization code from client [%s].", client.getClientId());
}
logger.debugf("Authorization code is valid.");
return clientCode;
}
throw new IdentityBrokerException("Invalid code, please login again through your application.");
}
}
@Override
public Response retrieveToken(FederatedIdentityModel identity) {
return Response.ok(identity.getToken()).type(MediaType.APPLICATION_JSON).build();
}
}