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/*******************************************************************************
* Copyright (c) 2007 Cognos Incorporated, IBM Corporation.
* 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:
* Cognos Incorporated - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.http.registry.internal;
import java.io.IOException;
import java.net.URL;
import java.util.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.eclipse.core.runtime.*;
import org.eclipse.equinox.http.registry.internal.ExtensionPointTracker.Listener;
import org.osgi.framework.Bundle;
import org.osgi.service.http.HttpContext;
import org.osgi.service.http.HttpService;
import org.osgi.service.packageadmin.PackageAdmin;
public class HttpContextManager implements Listener {
private static final String HTTPCONTEXTS_EXTENSION_POINT = "org.eclipse.equinox.http.registry.httpcontexts"; //$NON-NLS-1$
private static final String HTTPCONTEXT = "httpcontext"; //$NON-NLS-1$
private static final String NAME = "name"; //$NON-NLS-1$
private static final String CLASS = "class"; //$NON-NLS-1$
private static final String PATH = "path"; //$NON-NLS-1$
private static final String MIMEMAPPING = "mime-mapping"; //$NON-NLS-1$
private static final String MIMEEXTENSION = "extension"; //$NON-NLS-1$
private static final String MIMETYPE = "mime-type"; //$NON-NLS-1$
private Map contextsMap = new HashMap();
private PackageAdmin packageAdmin;
HttpService httpService;
private ExtensionPointTracker tracker;
public HttpContextManager(HttpService httpService, PackageAdmin packageAdmin, IExtensionRegistry registry) {
this.httpService = httpService;
this.packageAdmin = packageAdmin;
tracker = new ExtensionPointTracker(registry, HTTPCONTEXTS_EXTENSION_POINT, this);
}
public HttpContext getDefaultHttpContext(String bundleName) {
return new DefaultHttpContextImpl(getBundle(bundleName));
}
public synchronized HttpContext getHttpContext(String httpContextName) {
HttpContext context = (HttpContext) contextsMap.get(httpContextName);
if (context == null) {
context = new NamedHttpContextImpl();
contextsMap.put(httpContextName, context);
}
return context;
}
public void start() {
tracker.open();
}
public void stop() {
tracker.close();
synchronized (this) {
contextsMap.clear();
}
}
private 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;
}
public void added(IExtension extension) {
IConfigurationElement[] elements = extension.getConfigurationElements();
for (int i = 0; i < elements.length; i++) {
IConfigurationElement httpContextElement = elements[i];
if (!HTTPCONTEXT.equals(httpContextElement.getName()))
continue;
String httpContextName = httpContextElement.getAttribute(NAME);
if (httpContextName == null)
continue;
HttpContext context = null;
String clazz = httpContextElement.getAttribute(CLASS);
if (clazz != null) {
try {
context = (HttpContext) httpContextElement.createExecutableExtension(CLASS);
} catch (CoreException e) {
// log it.
e.printStackTrace();
}
} else {
Bundle b = getBundle(extension.getContributor().getName());
String path = httpContextElement.getAttribute(PATH);
Properties mimeMappings = null;
IConfigurationElement[] mimeMappingElements = httpContextElement.getChildren(MIMEMAPPING);
if (mimeMappingElements.length > 0) {
mimeMappings = new Properties();
for (int j = 0; j < mimeMappingElements.length; j++) {
IConfigurationElement urlMappingElement = mimeMappingElements[i];
String mimeExtension = urlMappingElement.getAttribute(MIMEEXTENSION);
String mimeType = urlMappingElement.getAttribute(MIMETYPE);
mimeMappings.put(mimeExtension, mimeType);
}
}
context = new DefaultHttpContextImpl(b, path, mimeMappings);
}
NamedHttpContextImpl namedContext = (NamedHttpContextImpl) getHttpContext(httpContextName);
namedContext.addHttpContext(httpContextElement, context);
}
}
public void removed(IExtension extension) {
IConfigurationElement[] elements = extension.getConfigurationElements();
for (int i = 0; i < elements.length; i++) {
IConfigurationElement httpContextElement = elements[i];
if (!HTTPCONTEXT.equals(httpContextElement.getName()))
continue;
String httpContextName = httpContextElement.getAttribute(NAME);
if (httpContextName == null)
continue;
NamedHttpContextImpl namedContext = (NamedHttpContextImpl) getHttpContext(httpContextName);
namedContext.removeHttpContext(httpContextElement);
}
}
private class DefaultHttpContextImpl implements HttpContext {
private Bundle bundle;
private HttpContext delegate;
private String bundlePath;
private Properties mimeMappings;
public DefaultHttpContextImpl(Bundle bundle) {
this.bundle = bundle;
delegate = httpService.createDefaultHttpContext();
}
public DefaultHttpContextImpl(Bundle b, String bundlePath, Properties mimeMappings) {
this(b);
if (bundlePath != null) {
if (bundlePath.endsWith("/")) //$NON-NLS-1$
bundlePath = bundlePath.substring(0, bundlePath.length() - 1);
if (bundlePath.length() == 0)
bundlePath = null;
}
this.bundlePath = bundlePath;
this.mimeMappings = mimeMappings;
}
public String getMimeType(String name) {
if (mimeMappings != null) {
int dotIndex = name.lastIndexOf('.');
if (dotIndex != -1) {
String mimeExtension = name.substring(dotIndex + 1);
String mimeType = mimeMappings.getProperty(mimeExtension);
if (mimeType != null)
return mimeType;
}
}
return delegate.getMimeType(name);
}
public boolean handleSecurity(HttpServletRequest arg0, HttpServletResponse arg1) throws IOException {
return delegate.handleSecurity(arg0, arg1);
}
public URL getResource(String resourceName) {
if (bundlePath != null)
resourceName = bundlePath + resourceName;
int lastSlash = resourceName.lastIndexOf('/');
if (lastSlash == -1)
return null;
String path = resourceName.substring(0, lastSlash);
if (path.length() == 0)
path = "/"; //$NON-NLS-1$
String file = resourceName.substring(lastSlash + 1);
Enumeration entryPaths = bundle.findEntries(path, file, false);
if (entryPaths != null && entryPaths.hasMoreElements())
return (URL) entryPaths.nextElement();
return null;
}
public Set getResourcePaths(String path) {
if (bundlePath != null)
path = bundlePath + path;
Enumeration entryPaths = bundle.findEntries(path, null, false);
if (entryPaths == null)
return null;
Set result = new HashSet();
while (entryPaths.hasMoreElements()) {
URL entryURL = (URL) entryPaths.nextElement();
String entryPath = entryURL.getFile();
if (bundlePath == null)
result.add(entryPath);
else
result.add(entryPath.substring(bundlePath.length()));
}
return result;
}
}
}
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