/*
* 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.aries.jndi.url;
import java.security.AccessControlException;
import java.security.AccessController;
import java.util.Hashtable;
import java.util.Map;
import javax.naming.Binding;
import javax.naming.Context;
import javax.naming.Name;
import javax.naming.NameClassPair;
import javax.naming.NameNotFoundException;
import javax.naming.NamingEnumeration;
import javax.naming.NamingException;
import org.apache.aries.jndi.services.ServiceHelper;
import org.apache.aries.util.nls.MessageUtil;
import org.osgi.framework.AdminPermission;
import org.osgi.framework.BundleContext;
/**
* A JNDI context for looking stuff up from the service registry.
*/
public class ServiceRegistryContext extends AbstractServiceRegistryContext implements Context {
/** The parent name, if one is provided, of this context */
private OsgiName parentName;
/**
* Why Mr Java this class does indeed take a fine copy of the provided
* environment. One might imagine that it is worried that the provider is
* not to be trusted.
*
* @param environment
*/
public ServiceRegistryContext(BundleContext callerContext, Hashtable<?, ?> environment) {
super(callerContext, environment);
}
public ServiceRegistryContext(BundleContext callerContext, OsgiName validName, Map<String, Object> env) {
super(callerContext, env);
parentName = validName;
}
public NamingEnumeration<NameClassPair> list(final Name name) throws NamingException {
return new ServiceRegistryListContext(callerContext, env, convert(name)).list("");
}
public NamingEnumeration<NameClassPair> list(String name) throws NamingException {
return list(parse(name));
}
public NamingEnumeration<Binding> listBindings(final Name name) throws NamingException {
return new ServiceRegistryListContext(callerContext, env, convert(name)).listBindings("");
}
public NamingEnumeration<Binding> listBindings(String name) throws NamingException {
return listBindings(parse(name));
}
private static final MessageUtil MESSAGES = MessageUtil.createMessageUtil(ServiceRegistryContext.class, "org.apache.aries.jndi.nls.jndiUrlMessages");
public Object lookup(Name name) throws NamingException {
Object result;
OsgiName validName = convert(name);
String pathFragment = validName.getSchemePath();
String schemeName = validName.getScheme();
if (validName.hasInterface()) {
if (OsgiName.FRAMEWORK_PATH.equals(pathFragment) && "bundleContext".equals(validName.getServiceName())) {
AdminPermission adminPermission =
new AdminPermission(callerContext.getBundle(), AdminPermission.CONTEXT);
try {
AccessController.checkPermission(adminPermission);
return callerContext;
} catch (AccessControlException accessControlException) {
NamingException namingException = new NameNotFoundException(MESSAGES.getMessage("caller.not.priviledged"));
namingException.setRootCause(accessControlException);
throw namingException;
}
} else if ((OsgiName.SERVICE_PATH.equals(pathFragment) && OsgiName.OSGI_SCHEME.equals(schemeName))
|| (OsgiName.SERVICES_PATH.equals(pathFragment) && OsgiName.ARIES_SCHEME.equals(schemeName))) {
result = ServiceHelper.getService(callerContext, validName, null, true, env, OsgiName.OSGI_SCHEME.equals(schemeName));
} else if (OsgiName.SERVICE_LIST_PATH.equals(pathFragment)) {
result = new ServiceRegistryListContext(callerContext, env, validName);
} else {
result = null;
}
} else {
result = new ServiceRegistryContext(callerContext, validName, env);
}
if (result == null) {
throw new NameNotFoundException(name.toString());
}
return result;
}
private OsgiName convert(Name name) throws NamingException {
if (name instanceof OsgiName) {
return (OsgiName) name;
} else if (parentName != null) {
return new OsgiName(parentName.toString() + "/" + name.toString());
} else {
return (OsgiName) parser.parse(name.toString());
}
}
private Name parse(String name) throws NamingException {
if (parentName != null) {
name = parentName.toString() + "/" + name;
}
return parser.parse(name);
}
public Object lookup(String name) throws NamingException {
return lookup(parse(name));
}
}