Merge pull request #150 from bohmber/MYFACES-4373-2.3.x

prefer secureRandom over random
diff --git a/impl/src/main/java/org/apache/myfaces/push/cdi/WebsocketChannelTokenBuilderBean.java b/impl/src/main/java/org/apache/myfaces/push/cdi/WebsocketChannelTokenBuilderBean.java
index 9f5edbf..a748204 100644
--- a/impl/src/main/java/org/apache/myfaces/push/cdi/WebsocketChannelTokenBuilderBean.java
+++ b/impl/src/main/java/org/apache/myfaces/push/cdi/WebsocketChannelTokenBuilderBean.java
@@ -1,88 +1,88 @@
-/*

- * 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.push.cdi;

-

-import javax.annotation.PostConstruct;

-import javax.enterprise.context.ApplicationScoped;

-import javax.faces.context.FacesContext;

-import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFWebConfigParam;

-import org.apache.myfaces.shared.util.WebConfigParamUtils;

-

-/**

- *

- */

-@ApplicationScoped

-public class WebsocketChannelTokenBuilderBean

-{

-    /**

-     * Defines how to generate the csrf session token.

-     */

-    @JSFWebConfigParam(since="2.2.0", expectedValues="secureRandom, random", 

-            defaultValue="none", group="state")

-    private static final String RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_PARAM

-            = "org.apache.myfaces.RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN";

-    private static final String RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_PARAM_DEFAULT = "random";

-    

-    private static final String RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_SECURE_RANDOM = "secureRandom";

-    private static final String RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_RANDOM = "random";

-    

-    private CsrfSessionTokenFactory csrfSessionTokenFactory;

-    

-    private boolean initialized;

-    

-    public WebsocketChannelTokenBuilderBean()

-    {

-    }

-    

-    @PostConstruct

-    public void init()

-    {

-        FacesContext facesContext = FacesContext.getCurrentInstance();

-        if (facesContext != null)

-        {

-            internalInit(facesContext);

-        }

-    }

-    

-    private synchronized void internalInit(FacesContext facesContext)

-    {

-        String csrfRandomMode = WebConfigParamUtils.getStringInitParameter(facesContext.getExternalContext(),

-                RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_PARAM, 

-                RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_PARAM_DEFAULT);

-        if (RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_SECURE_RANDOM.equals(csrfRandomMode))

-        {

-            csrfSessionTokenFactory = new SecureRandomCsrfSessionTokenFactory(facesContext);

-        }

-        else

-        {

-            csrfSessionTokenFactory = new RandomCsrfSessionTokenFactory(facesContext);

-        }        

-        initialized=true;

-    }

-    

-    public String createChannelToken(FacesContext facesContext, String channel)

-    {

-        if (!initialized)

-        {

-            internalInit(facesContext);

-        }

-        return csrfSessionTokenFactory.createCryptographicallyStrongTokenFromSession(facesContext);

-    }

-}

+/*
+ * 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.push.cdi;
+
+import javax.annotation.PostConstruct;
+import javax.enterprise.context.ApplicationScoped;
+import javax.faces.context.FacesContext;
+import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFWebConfigParam;
+import org.apache.myfaces.shared.util.WebConfigParamUtils;
+
+/**
+ *
+ */
+@ApplicationScoped
+public class WebsocketChannelTokenBuilderBean
+{
+    /**
+     * Defines how to generate the csrf session token.
+     */
+    @JSFWebConfigParam(since="2.2.0", expectedValues="secureRandom, random", 
+            defaultValue="secureRandom", group="state")
+    private static final String RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_PARAM
+            = "org.apache.myfaces.RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN";
+
+    private static final String RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_SECURE_RANDOM = "secureRandom";
+    private static final String RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_RANDOM = "random";
+    private static final String RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_PARAM_DEFAULT = RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_SECURE_RANDOM;
+
+    private CsrfSessionTokenFactory csrfSessionTokenFactory;
+    
+    private boolean initialized;
+    
+    public WebsocketChannelTokenBuilderBean()
+    {
+    }
+    
+    @PostConstruct
+    public void init()
+    {
+        FacesContext facesContext = FacesContext.getCurrentInstance();
+        if (facesContext != null)
+        {
+            internalInit(facesContext);
+        }
+    }
+    
+    private synchronized void internalInit(FacesContext facesContext)
+    {
+        String csrfRandomMode = WebConfigParamUtils.getStringInitParameter(facesContext.getExternalContext(),
+                RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_PARAM, 
+                RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_PARAM_DEFAULT);
+        if (RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN_RANDOM.equals(csrfRandomMode))
+        {
+            csrfSessionTokenFactory = new RandomCsrfSessionTokenFactory(facesContext);
+        }
+        else
+        {
+            csrfSessionTokenFactory = new SecureRandomCsrfSessionTokenFactory(facesContext);
+        }        
+        initialized=true;
+    }
+    
+    public String createChannelToken(FacesContext facesContext, String channel)
+    {
+        if (!initialized)
+        {
+            internalInit(facesContext);
+        }
+        return csrfSessionTokenFactory.createCryptographicallyStrongTokenFromSession(facesContext);
+    }
+}