/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.cxf.rs.security.oauth2.services;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.logging.Level;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.core.Response;
import org.apache.cxf.rs.security.oauth2.common.Client;
import org.apache.cxf.rs.security.oauth2.common.ClientAccessToken;
import org.apache.cxf.rs.security.oauth2.common.OAuthError;
import org.apache.cxf.rs.security.oauth2.common.ServerAccessToken;
import org.apache.cxf.rs.security.oauth2.grants.code.AuthorizationCodeDataProvider;
import org.apache.cxf.rs.security.oauth2.grants.code.AuthorizationCodeGrantHandler;
import org.apache.cxf.rs.security.oauth2.provider.AccessTokenGrantHandler;
import org.apache.cxf.rs.security.oauth2.provider.AccessTokenResponseFilter;
import org.apache.cxf.rs.security.oauth2.provider.OAuthServiceException;
import org.apache.cxf.rs.security.oauth2.utils.OAuthConstants;
import org.apache.cxf.rs.security.oauth2.utils.OAuthUtils;
/**
* OAuth2 Access Token Service implementation
*/
@Path("/token")
public class AccessTokenService extends AbstractTokenService {
private List<AccessTokenGrantHandler> grantHandlers = new LinkedList<AccessTokenGrantHandler>();
private List<AccessTokenResponseFilter> responseHandlers = new LinkedList<AccessTokenResponseFilter>();
/**
* Sets the list of optional grant handlers
* @param handlers the grant handlers
*/
public void setGrantHandlers(List<AccessTokenGrantHandler> handlers) {
grantHandlers = handlers;
}
@Override
protected void injectContextIntoOAuthProviders() {
super.injectContextIntoOAuthProviders();
for (AccessTokenGrantHandler grantHandler : grantHandlers) {
OAuthUtils.injectContextIntoOAuthProvider(getMessageContext(), grantHandler);
}
}
/**
* Sets a grant handler
* @param handler the grant handler
*/
public void setGrantHandler(AccessTokenGrantHandler handler) {
setGrantHandlers(Collections.singletonList(handler));
}
public void setResponseFilters(List<AccessTokenResponseFilter> handlers) {
this.responseHandlers = handlers;
}
public void setResponseFilter(AccessTokenResponseFilter responseHandler) {
responseHandlers.add(responseHandler);
}
/**
* Processes an access token request
* @param params the form parameters representing the access token grant
* @return Access Token or the error
*/
@POST
@Consumes("application/x-www-form-urlencoded")
@Produces("application/json")
public Response handleTokenRequest(MultivaluedMap<String, String> params) {
// Make sure the client is authenticated
Client client = authenticateClientIfNeeded(params);
if (!OAuthUtils.isGrantSupportedForClient(client,
isCanSupportPublicClients(),
params.getFirst(OAuthConstants.GRANT_TYPE))) {
LOG.log(Level.FINE, "The grant type {} is not supported for the client",
params.getFirst(OAuthConstants.GRANT_TYPE));
return createErrorResponse(params, OAuthConstants.UNAUTHORIZED_CLIENT);
}
try {
checkAudience(client, params);
} catch (OAuthServiceException ex) {
return super.createErrorResponseFromBean(ex.getError());
}
// Find the grant handler
AccessTokenGrantHandler handler = findGrantHandler(params);
if (handler == null) {
LOG.fine("No Grant Handler found");
return createErrorResponse(params, OAuthConstants.UNSUPPORTED_GRANT_TYPE);
}
// Create the access token
ServerAccessToken serverToken = null;
try {
serverToken = handler.createAccessToken(client, params);
} catch (WebApplicationException ex) {
throw ex;
} catch (RuntimeException ex) {
// This is done to bypass a Check-Style
// restriction on a number of return statements
OAuthServiceException oauthEx = ex instanceof OAuthServiceException
? (OAuthServiceException)ex : new OAuthServiceException(ex);
return handleException(oauthEx, OAuthConstants.INVALID_GRANT);
}
if (serverToken == null) {
LOG.fine("No access token was created");
return createErrorResponse(params, OAuthConstants.INVALID_GRANT);
}
// Extract the information to be of use for the client
ClientAccessToken clientToken = OAuthUtils.toClientAccessToken(serverToken, isWriteOptionalParameters());
processClientAccessToken(clientToken, serverToken);
// Return it to the client
return Response.ok(clientToken)
.header(HttpHeaders.CACHE_CONTROL, "no-store")
.header("Pragma", "no-cache")
.build();
}
protected void processClientAccessToken(ClientAccessToken clientToken, ServerAccessToken serverToken) {
for (AccessTokenResponseFilter filter : responseHandlers) {
filter.process(clientToken, serverToken);
}
}
protected void checkAudience(Client c, MultivaluedMap<String, String> params) {
String audienceParam = params.getFirst(OAuthConstants.CLIENT_AUDIENCE);
if (!OAuthUtils.validateAudience(audienceParam, c.getRegisteredAudiences())) {
LOG.fine("Error validating the audience parameter");
throw new OAuthServiceException(new OAuthError(OAuthConstants.ACCESS_DENIED));
}
}
/**
* Find the matching grant handler
*/
protected AccessTokenGrantHandler findGrantHandler(MultivaluedMap<String, String> params) {
String grantType = params.getFirst(OAuthConstants.GRANT_TYPE);
if (grantType != null) {
for (AccessTokenGrantHandler handler : grantHandlers) {
if (handler.getSupportedGrantTypes().contains(grantType)) {
return handler;
}
}
// Lets try the well-known grant handlers
if (super.getDataProvider() instanceof AuthorizationCodeDataProvider) {
AuthorizationCodeGrantHandler handler = new AuthorizationCodeGrantHandler();
if (handler.getSupportedGrantTypes().contains(grantType)) {
handler.setDataProvider((AuthorizationCodeDataProvider)super.getDataProvider());
return handler;
}
}
}
return null;
}
}