/**
* 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.security.Principal;
import java.util.Collections;
import java.util.List;
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 javax.ws.rs.core.SecurityContext;
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.OAuthServiceException;
import org.apache.cxf.rs.security.oauth2.utils.AuthorizationUtils;
import org.apache.cxf.rs.security.oauth2.utils.OAuthConstants;
/**
* OAuth2 Access Token Service implementation
*/
@Path("/token")
public class AccessTokenService extends AbstractOAuthService {
private List<AccessTokenGrantHandler> grantHandlers = Collections.emptyList();
/**
* Sets the list of optional grant handlers
* @param handlers the grant handlers
*/
public void setGrantHandlers(List<AccessTokenGrantHandler> handlers) {
grantHandlers = handlers;
}
/**
* 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);
// Find the grant handler
AccessTokenGrantHandler handler = findGrantHandler(params);
if (handler == null) {
return createErrorResponse(params, OAuthConstants.UNSUPPORTED_GRANT_TYPE);
}
// Create the access token
ServerAccessToken serverToken = null;
try {
serverToken = handler.createAccessToken(client, params);
} catch (OAuthServiceException ex) {
// the error response is to be returned next
}
if (serverToken == null) {
return createErrorResponse(params, OAuthConstants.INVALID_GRANT);
}
// Extract the information to be of use for the client
ClientAccessToken clientToken = new ClientAccessToken(serverToken.getTokenType(),
serverToken.getTokenKey());
clientToken.setParameters(serverToken.getParameters());
// Return it to the client
return Response.ok(clientToken)
.header(HttpHeaders.CACHE_CONTROL, "no-store")
.header("Pragma", "no-cache")
.build();
}
/**
* Make sure the client is authenticated
*/
private Client authenticateClientIfNeeded(MultivaluedMap<String, String> params) {
Client client = null;
SecurityContext sc = getMessageContext().getSecurityContext();
if (params.containsKey(OAuthConstants.CLIENT_ID)) {
// both client_id and client_secret are expected in the form payload
client = getAndValidateClient(params.getFirst(OAuthConstants.CLIENT_ID),
params.getFirst(OAuthConstants.CLIENT_SECRET));
} else if (sc.getUserPrincipal() != null) {
// client has already authenticated
Principal p = sc.getUserPrincipal();
String scheme = sc.getAuthenticationScheme();
if ("Basic".equals(scheme)) {
// section 2.3.1
client = getClient(p.getName());
} else {
// section 2.3.2
// the client has authenticated itself using some other scheme
// in which case the mapping between the scheme and the client_id
// should've been done, in which case the client_id is expected
// on the current message
Object clientIdProp = getMessageContext().get(OAuthConstants.CLIENT_ID);
if (clientIdProp != null) {
client = getClient(clientIdProp.toString());
// TODO: consider matching client.getUserSubject().getLoginName()
// against principal.getName() ?
}
}
} else {
// the client id and secret are expected to be in the Basic scheme data
String[] parts =
AuthorizationUtils.getAuthorizationParts(getMessageContext());
if ("Basic".equals(parts[0])) {
String[] authInfo = AuthorizationUtils.getBasicAuthParts(parts[1]);
client = getAndValidateClient(authInfo[0], authInfo[1]);
}
}
if (client == null) {
throw new WebApplicationException(401);
}
return client;
}
// Get the Client and check the id and secret
private Client getAndValidateClient(String clientId, String clientSecret) {
Client client = getClient(clientId);
if (clientSecret == null || !client.getClientId().equals(clientId)
|| !client.getClientSecret().equals(clientSecret)) {
throw new WebApplicationException(401);
}
return client;
}
/**
* Find the mathcing 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 default grant handler
if (grantHandlers.size() == 0) {
AuthorizationCodeGrantHandler handler = new AuthorizationCodeGrantHandler();
if (handler.getSupportedGrantTypes().contains(grantType)) {
handler.setDataProvider(
(AuthorizationCodeDataProvider)super.getDataProvider());
return handler;
}
}
}
return null;
}
protected Response createErrorResponse(MultivaluedMap<String, String> params,
String error) {
OAuthError oauthError = new OAuthError(error);
return Response.status(400).entity(oauthError).build();
}
}