| /* |
| * 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.myfaces.tobago.internal.context; |
| |
| import org.apache.myfaces.tobago.internal.util.RandomUtils; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.faces.component.UIViewRoot; |
| import javax.faces.context.FacesContext; |
| import java.io.Serializable; |
| import java.lang.invoke.MethodHandles; |
| |
| public class Nonce implements Serializable { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass()); |
| |
| private static final String KEY = Nonce.class.getName(); |
| |
| private Nonce() { |
| } |
| |
| public static String getNonce(final FacesContext facesContext) { |
| final UIViewRoot viewRoot = facesContext.getViewRoot(); |
| String nonce = (String) viewRoot.getViewMap().get(KEY); |
| if (nonce == null) { |
| nonce = RandomUtils.nextString(); |
| LOG.debug("Creating nonce='{}'", nonce); |
| viewRoot.getViewMap().put(KEY, nonce); |
| } |
| return nonce; |
| } |
| } |