1 files changed, 161 insertions, 0 deletions
diff --git a/qpid/java/broker/src/main/java/org/apache/qpid/server/security/access/ACLManager.java b/qpid/java/broker/src/main/java/org/apache/qpid/server/security/access/ACLManager.java
new file mode 100644
index 0000000000..539f32a732
--- /dev/null
+++ b/qpid/java/broker/src/main/java/org/apache/qpid/server/security/access/ACLManager.java
@@ -0,0 +1,161 @@
+/*
+ *  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.server.security.access;
+
+import org.apache.commons.configuration.Configuration;
+import org.apache.commons.configuration.ConfigurationException;
+import org.apache.qpid.server.registry.ApplicationRegistry;
+import org.apache.qpid.server.security.access.plugins.DenyAll;
+import org.apache.qpid.configuration.PropertyUtils;
+import org.apache.log4j.Logger;
+
+import java.util.List;
+import java.lang.reflect.Method;
+
+public class ACLManager
+{
+    private static final Logger _logger = Logger.getLogger(ACLManager.class);
+
+    public static ACLPlugin loadACLManager(String name, Configuration hostConfig) throws ConfigurationException
+    {
+        ACLPlugin aclPlugin = ApplicationRegistry.getInstance().getAccessManager();
+
+        if (hostConfig == null)
+        {
+            _logger.warn("No Configuration specified. Using default ACLPlugin '" + aclPlugin.getPluginName()
+                         + "' for VirtualHost:'" + name + "'");
+            return aclPlugin;
+        }
+
+        String accessClass = hostConfig.getString("security.access.class");
+        if (accessClass == null)
+        {
+
+            _logger.warn("No ACL Plugin specified. Using default ACL Plugin '" + aclPlugin.getPluginName() +
+                         "' for VirtualHost:'" + name + "'");
+            return aclPlugin;
+        }
+
+        Object o;
+        try
+        {
+            o = Class.forName(accessClass).newInstance();
+        }
+        catch (Exception e)
+        {
+            throw new ConfigurationException("Error initialising ACL: " + e, e);
+        }
+
+        if (!(o instanceof ACLPlugin))
+        {
+            throw new ConfigurationException("ACL Plugins must implement the ACLPlugin interface");
+        }
+
+        initialiseAccessControl((ACLPlugin) o, hostConfig);
+
+        aclPlugin = getManager((ACLPlugin) o);
+        if (_logger.isInfoEnabled())
+        {
+            _logger.info("Initialised ACL Plugin '" + aclPlugin.getPluginName()
+                         + "' for virtualhost '" + name + "' successfully");
+        }
+
+        return aclPlugin;
+    }
+
+
+    private static void initialiseAccessControl(ACLPlugin accessManager, Configuration config)
+            throws ConfigurationException
+    {
+        //First provide the ACLPlugin with the host configuration
+
+        accessManager.setConfiguaration(config);
+
+        //Provide additional attribute customisation.        
+        String baseName = "security.access.attributes.attribute.";
+        List<String> argumentNames = config.getList(baseName + "name");
+        List<String> argumentValues = config.getList(baseName + "value");
+        for (int i = 0; i < argumentNames.size(); i++)
+        {
+            String argName = argumentNames.get(i);
+            if (argName == null || argName.length() == 0)
+            {
+                throw new ConfigurationException("Access Control argument names must have length >= 1 character");
+            }
+            if (Character.isLowerCase(argName.charAt(0)))
+            {
+                argName = Character.toUpperCase(argName.charAt(0)) + argName.substring(1);
+            }
+            String methodName = "set" + argName;
+            Method method = null;
+            try
+            {
+                method = accessManager.getClass().getMethod(methodName, String.class);
+            }
+            catch (NoSuchMethodException e)
+            {
+                //do nothing as method will be null
+            }
+
+            if (method == null)
+            {
+                throw new ConfigurationException("No method " + methodName + " found in class " + accessManager.getClass() +
+                                                 " hence unable to configure access control. The method must be public and " +
+                                                 "have a single String argument with a void return type");
+            }
+            try
+            {
+                method.invoke(accessManager, PropertyUtils.replaceProperties(argumentValues.get(i)));
+            }
+            catch (Exception e)
+            {
+                ConfigurationException ce = new ConfigurationException(e.getMessage(), e.getCause());
+                ce.initCause(e);
+                throw ce;
+            }
+        }
+    }
+
+
+    private static ACLPlugin getManager(ACLPlugin manager)
+    {
+        if (manager == null)
+        {
+            if (ApplicationRegistry.getInstance().getAccessManager() == null)
+            {
+                return new DenyAll();
+            }
+            else
+            {
+                return ApplicationRegistry.getInstance().getAccessManager();
+            }
+        }
+        else
+        {
+            return manager;
+        }
+    }
+
+    public static Logger getLogger()
+    {
+        return _logger;
+    }
+}