1 files changed, 107 insertions, 0 deletions
diff --git a/src/org/apache/qpid/management/common/sasl/UsernameHashedPasswordCallbackHandler.java b/src/org/apache/qpid/management/common/sasl/UsernameHashedPasswordCallbackHandler.java
new file mode 100644
index 0000000..54d7374
--- /dev/null
+++ b/src/org/apache/qpid/management/common/sasl/UsernameHashedPasswordCallbackHandler.java
@@ -0,0 +1,107 @@
+/*
+ *
+ * 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.qpid.management.common.sasl;
+
+import org.apache.harmony.javax.security.auth.callback.Callback;
+import org.apache.harmony.javax.security.auth.callback.CallbackHandler;
+import org.apache.harmony.javax.security.auth.callback.NameCallback;
+import org.apache.harmony.javax.security.auth.callback.PasswordCallback;
+import org.apache.harmony.javax.security.auth.callback.UnsupportedCallbackException;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+
+public class UsernameHashedPasswordCallbackHandler implements CallbackHandler
+{
+    private String user;
+    private char[] pwchars;
+    
+    public UsernameHashedPasswordCallbackHandler(String user, String password) throws Exception
+    {
+        this.user = user;
+        this.pwchars = getHash(password);
+    }
+
+    public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException
+    {
+        for (int i = 0; i < callbacks.length; i++)
+        {
+            if (callbacks[i] instanceof NameCallback)
+            {
+                NameCallback ncb = (NameCallback) callbacks[i];
+                ncb.setName(user);
+            } 
+            else if (callbacks[i] instanceof PasswordCallback)
+            {
+                PasswordCallback pcb = (PasswordCallback) callbacks[i];
+                pcb.setPassword(pwchars);
+            } 
+            else
+            {
+                throw new UnsupportedCallbackException(callbacks[i]);
+            }
+        }
+    }
+
+    
+    private void clearPassword()
+    {
+        if (pwchars != null) 
+        {
+            for (int i = 0 ; i < pwchars.length ; i++)
+            {
+                pwchars[i] = 0;
+            }
+            pwchars = null;
+        }
+    }
+
+    protected void finalize()
+    {
+        clearPassword();
+    }
+    
+    public static char[] getHash(String text) throws NoSuchAlgorithmException, UnsupportedEncodingException
+    {
+        byte[] data = text.getBytes("utf-8");
+
+        MessageDigest md = MessageDigest.getInstance("MD5");
+
+        for (byte b : data)
+        {
+            md.update(b);
+        }
+
+        byte[] digest = md.digest();
+
+        char[] hash = new char[digest.length ];
+
+        int index = 0;
+        for (byte b : digest)
+        {            
+            hash[index++] = (char) b;
+        }
+
+        return hash;
+    }
+}