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/*******************************************************************************
* Copyright (c) 2007 IBM Corp.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corp - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.http.registry.internal;
import java.util.*;
import javax.servlet.Servlet;
import javax.servlet.ServletException;
import org.eclipse.core.runtime.IContributor;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.osgi.framework.*;
import org.osgi.service.http.*;
import org.osgi.service.packageadmin.PackageAdmin;
public class HttpRegistryManager {
class ResourcesContribution {
String alias;
String baseName;
String httpContextId;
IContributor contributor;
public ResourcesContribution(String alias, String baseName, String httpContextId, IContributor contributor) {
this.alias = alias;
this.baseName = baseName;
this.httpContextId = httpContextId;
this.contributor = contributor;
}
}
class ServletContribution {
String alias;
Servlet servlet;
Dictionary initparams;
String httpContextId;
IContributor contributor;
public ServletContribution(String alias, Servlet servlet, Dictionary initparams, String httpContextId, IContributor contributor) {
this.alias = alias;
this.servlet = servlet;
this.initparams = initparams;
this.httpContextId = httpContextId;
this.contributor = contributor;
}
}
class HttpContextContribution {
HttpContext context;
IContributor contributor;
public HttpContextContribution(HttpContext context, IContributor contributor) {
this.context = context;
this.contributor = contributor;
}
}
private HttpContextManager httpContextManager;
private ServletManager servletManager;
private ResourceManager resourceManager;
private HttpService httpService;
private PackageAdmin packageAdmin;
private Map contexts = new HashMap();
private Map servlets = new HashMap();
private Map resources = new HashMap();
private Set registered = new HashSet();
public HttpRegistryManager(ServiceReference reference, HttpService httpService, PackageAdmin packageAdmin, IExtensionRegistry registry) {
this.httpService = httpService;
this.packageAdmin = packageAdmin;
httpContextManager = new HttpContextManager(this, registry);
servletManager = new ServletManager(this, reference, registry);
resourceManager = new ResourceManager(this, reference, registry);
}
public void start() {
httpContextManager.start();
servletManager.start();
resourceManager.start();
}
public void stop() {
httpContextManager.stop();
servletManager.stop();
resourceManager.stop();
}
public synchronized boolean addResourcesContribution(String alias, String baseName, String httpContextId, IContributor contributor) {
if (resources.containsKey(alias) || servlets.containsKey(alias))
return false; // TODO: should log this
ResourcesContribution contribution = new ResourcesContribution(alias, baseName, httpContextId, contributor);
resources.put(alias, contribution);
if (httpContextId == null || contexts.containsKey(httpContextId))
registerResources(contribution);
return true;
}
public synchronized boolean addServletContribution(String alias, Servlet servlet, Dictionary initparams, String httpContextId, IContributor contributor) {
if (resources.containsKey(alias) || servlets.containsKey(alias))
return false; // TODO: should log this
ServletContribution contribution = new ServletContribution(alias, servlet, initparams, httpContextId, contributor);
servlets.put(alias, contribution);
if (httpContextId == null || contexts.containsKey(httpContextId))
registerServlet(contribution);
return true;
}
public synchronized void removeContribution(String alias) {
resources.remove(alias);
servlets.remove(alias);
unregister(alias);
}
public synchronized HttpContext getHttpContext(String httpContextId, Bundle bundle) {
HttpContextContribution contribution = (HttpContextContribution) contexts.get(httpContextId);
if (contribution == null)
return null;
if (System.getSecurityManager() != null) {
Bundle httpContextBundle = getBundle(contribution.contributor);
AdminPermission resourcePermission = new AdminPermission(httpContextBundle, "resource"); //$NON-NLS-1$
if (!bundle.hasPermission(resourcePermission))
return null;
}
return contribution.context;
}
public synchronized boolean addHttpContextContribution(String httpContextId, HttpContext context, IContributor contributor) {
if (contexts.containsKey(httpContextId))
return false; // TODO: should log this
contexts.put(httpContextId, new HttpContextContribution(context, contributor));
for (Iterator it = resources.values().iterator(); it.hasNext();) {
ResourcesContribution contribution = (ResourcesContribution) it.next();
if (httpContextId.equals(contribution.httpContextId))
registerResources(contribution);
}
for (Iterator it = servlets.values().iterator(); it.hasNext();) {
ServletContribution contribution = (ServletContribution) it.next();
if (httpContextId.equals(contribution.httpContextId))
registerServlet(contribution);
}
return true;
}
public synchronized void removeHttpContextContribution(String httpContextId) {
if (contexts.remove(httpContextId) != null) {
for (Iterator it = resources.values().iterator(); it.hasNext();) {
ResourcesContribution contribution = (ResourcesContribution) it.next();
if (httpContextId.equals(contribution.httpContextId))
unregister(contribution.alias);
}
for (Iterator it = servlets.values().iterator(); it.hasNext();) {
ServletContribution contribution = (ServletContribution) it.next();
if (httpContextId.equals(contribution.httpContextId))
unregister(contribution.alias);
}
}
}
public DefaultRegistryHttpContext createDefaultRegistryHttpContext() {
HttpContext defaultContext = httpService.createDefaultHttpContext();
return new DefaultRegistryHttpContext(defaultContext);
}
public Bundle getBundle(IContributor contributor) {
return getBundle(contributor.getName());
}
public Bundle getBundle(String symbolicName) {
Bundle[] bundles = packageAdmin.getBundles(symbolicName, null);
if (bundles == null)
return null;
//Return the first bundle that is not installed or uninstalled
for (int i = 0; i < bundles.length; i++) {
if ((bundles[i].getState() & (Bundle.INSTALLED | Bundle.UNINSTALLED)) == 0) {
return bundles[i];
}
}
return null;
}
private void registerResources(ResourcesContribution contribution) {
HttpContext context = getHttpContext(contribution.httpContextId, contribution.contributor);
if (context == null)
return;
try {
httpService.registerResources(contribution.alias, contribution.baseName, context);
registered.add(contribution.alias);
} catch (NamespaceException e) {
// TODO: should log this
e.printStackTrace();
}
}
private void registerServlet(ServletContribution contribution) {
HttpContext context = getHttpContext(contribution.httpContextId, contribution.contributor);
if (context == null)
return;
try {
httpService.registerServlet(contribution.alias, contribution.servlet, contribution.initparams, context);
registered.add(contribution.alias);
} catch (NamespaceException e) {
// TODO: should log this
e.printStackTrace();
} catch (ServletException e) {
// TODO: should log this
e.printStackTrace();
}
}
private void unregister(String alias) {
if (registered.remove(alias))
httpService.unregister(alias);
}
private HttpContext getHttpContext(String httpContextId, IContributor contributor) {
if (httpContextId == null) {
DefaultRegistryHttpContext defaultContext = createDefaultRegistryHttpContext();
defaultContext.addResourceMapping(getBundle(contributor), null);
return defaultContext;
}
HttpContextContribution contribution = (HttpContextContribution) contexts.get(httpContextId);
if (System.getSecurityManager() != null) {
Bundle contributorBundle = getBundle(contributor);
Bundle httpContextBundle = getBundle(contribution.contributor);
AdminPermission resourcePermission = new AdminPermission(httpContextBundle, "resource"); //$NON-NLS-1$
if (!contributorBundle.hasPermission(resourcePermission))
return null;
}
return contribution.context;
}
}
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