1 files changed, 99 insertions, 0 deletions
diff --git a/java/broker/src/main/java/org/apache/qpid/server/security/auth/UsernamePasswordInitialiser.java b/java/broker/src/main/java/org/apache/qpid/server/security/auth/UsernamePasswordInitialiser.java
new file mode 100644
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--- /dev/null
+++ b/java/broker/src/main/java/org/apache/qpid/server/security/auth/UsernamePasswordInitialiser.java
@@ -0,0 +1,99 @@
+/*
+ *
+ * Copyright (c) 2006 The Apache Software Foundation
+ *
+ * Licensed 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.server.security.auth;
+
+import org.apache.commons.configuration.Configuration;
+
+import javax.security.auth.callback.*;
+import javax.security.auth.login.AccountNotFoundException;
+import javax.security.sasl.AuthorizeCallback;
+import java.util.Map;
+import java.io.IOException;
+import java.security.Principal;
+
+public abstract class UsernamePasswordInitialiser implements AuthenticationProviderInitialiser
+{
+    private ServerCallbackHandler _callbackHandler;
+
+    private class ServerCallbackHandler implements CallbackHandler
+    {
+        private final PrincipalDatabase _principalDatabase;
+
+        protected ServerCallbackHandler(PrincipalDatabase database)
+        {
+            _principalDatabase = database;
+        }
+
+        public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException
+        {
+            Principal username = null;
+            for (Callback callback : callbacks)
+            {
+                if (callback instanceof NameCallback)
+                {
+                    username = new UsernamePrincipal(((NameCallback)callback).getDefaultName());
+                }
+                else if (callback instanceof PasswordCallback)
+                {
+                    try
+                    {
+                        _principalDatabase.setPassword(username, (PasswordCallback) callback);
+                    }
+                    catch (AccountNotFoundException e)
+                    {
+                        // very annoyingly the callback handler does not throw anything more appropriate than
+                        // IOException
+                        throw new IOException("Error looking up user " + e);
+                    }
+                }
+                else if (callback instanceof AuthorizeCallback)
+                {
+                    ((AuthorizeCallback)callback).setAuthorized(true);
+                }
+                else
+                {
+                    throw new UnsupportedCallbackException(callback);
+                }
+            }
+        }
+    }    
+
+    public void initialise(String baseConfigPath, Configuration configuration,
+                           Map<String, PrincipalDatabase> principalDatabases) throws Exception
+    {
+        String principalDatabaseName = configuration.getString(baseConfigPath + ".principal-database");
+        PrincipalDatabase db = principalDatabases.get(principalDatabaseName);
+        if (db == null)
+        {
+            throw new Exception("Principal database " + principalDatabaseName + " not found. Ensure the name matches " +
+                                "an entry in the configuration file");
+        }
+        _callbackHandler = new ServerCallbackHandler(db);
+    }
+
+    public CallbackHandler getCallbackHandler()
+    {
+        return _callbackHandler;
+    }
+
+    public Map<String, ?> getProperties()
+    {
+        // there are no properties required for the CRAM-MD5 implementation
+        return null;
+    }
+}