| /** |
| * 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.wss4j.dom.common; |
| |
| import org.apache.wss4j.common.ext.WSPasswordCallback; |
| import org.apache.wss4j.common.ext.WSSecurityException; |
| import org.apache.wss4j.common.util.KeyUtils; |
| import org.apache.xml.security.utils.XMLUtils; |
| |
| import javax.security.auth.callback.Callback; |
| import javax.security.auth.callback.CallbackHandler; |
| import javax.security.auth.callback.UnsupportedCallbackException; |
| |
| import java.io.IOException; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * A Callback Handler implementation for the case of storing a secret key. |
| */ |
| public class SecretKeyCallbackHandler implements CallbackHandler { |
| |
| private Map<String, byte[]> secrets = new HashMap<>(); |
| private byte[] outboundSecret; |
| |
| public void handle(Callback[] callbacks) |
| throws IOException, UnsupportedCallbackException { |
| for (int i = 0; i < callbacks.length; i++) { |
| if (callbacks[i] instanceof WSPasswordCallback) { |
| WSPasswordCallback pc = (WSPasswordCallback) callbacks[i]; |
| if (pc.getUsage() == WSPasswordCallback.SECRET_KEY |
| || pc.getUsage() == WSPasswordCallback.SECURITY_CONTEXT_TOKEN) { |
| byte[] secret = this.secrets.get(pc.getIdentifier()); |
| if (secret == null) { |
| secret = outboundSecret; |
| } |
| pc.setKey(secret); |
| break; |
| } |
| } else { |
| throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback"); |
| } |
| } |
| } |
| |
| public void addSecretKey(String identifier, byte[] secretKey) { |
| secrets.put(identifier, secretKey); |
| } |
| |
| public void setOutboundSecret(byte[] secret) throws WSSecurityException { |
| outboundSecret = secret; |
| byte[] encodedBytes = KeyUtils.generateDigest(outboundSecret); |
| String identifier = XMLUtils.encodeToString(encodedBytes); |
| addSecretKey(identifier, outboundSecret); |
| } |
| } |