/*******************************************************************************
* Copyright (c) 2006, 2010 IBM Corporation and others.
* 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 Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.internal.signedcontent;
import java.io.File;
import java.io.IOException;
import java.net.*;
import java.security.*;
import java.security.cert.CertificateException;
import java.util.*;
import org.eclipse.osgi.baseadaptor.*;
import org.eclipse.osgi.baseadaptor.bundlefile.*;
import org.eclipse.osgi.baseadaptor.hooks.AdaptorHook;
import org.eclipse.osgi.baseadaptor.hooks.BundleFileWrapperFactoryHook;
import org.eclipse.osgi.framework.adaptor.BundleData;
import org.eclipse.osgi.framework.adaptor.FrameworkAdaptor;
import org.eclipse.osgi.framework.internal.core.*;
import org.eclipse.osgi.framework.log.FrameworkLog;
import org.eclipse.osgi.framework.log.FrameworkLogEntry;
import org.eclipse.osgi.internal.provisional.service.security.AuthorizationEngine;
import org.eclipse.osgi.internal.provisional.verifier.CertificateVerifierFactory;
import org.eclipse.osgi.internal.service.security.DefaultAuthorizationEngine;
import org.eclipse.osgi.internal.service.security.KeyStoreTrustEngine;
import org.eclipse.osgi.service.security.TrustEngine;
import org.eclipse.osgi.signedcontent.SignedContent;
import org.eclipse.osgi.signedcontent.SignedContentFactory;
import org.eclipse.osgi.util.ManifestElement;
import org.eclipse.osgi.util.NLS;
import org.osgi.framework.*;
import org.osgi.framework.Constants;
import org.osgi.util.tracker.ServiceTracker;
/**
* Implements signed bundle hook support for the framework
*/
public class SignedBundleHook implements AdaptorHook, BundleFileWrapperFactoryHook, HookConfigurator, SignedContentFactory {
static final int VERIFY_CERTIFICATE = 0x01;
static final int VERIFY_TRUST = 0x02;
static final int VERIFY_RUNTIME = 0x04;
static final int VERIFY_AUTHORITY = 0x08;
static final int VERIFY_ALL = VERIFY_CERTIFICATE | VERIFY_TRUST | VERIFY_RUNTIME | VERIFY_AUTHORITY;
private static String SUPPORT_CERTIFICATE = "certificate"; //$NON-NLS-1$
private static String SUPPORT_TRUST = "trust"; //$NON-NLS-1$
private static String SUPPORT_RUNTIME = "runtime"; //$NON-NLS-1$
private static String SUPPORT_AUTHORITY = "authority"; //$NON-NLS-1$
private static String SUPPORT_ALL = "all"; //$NON-NLS-1$
private static String SUPPORT_TRUE = "true"; //$NON-NLS-1$
//TODO: comes from configuration!;
private static String CACERTS_PATH = System.getProperty("java.home") + File.separatorChar + "lib" + File.separatorChar + "security" + File.separatorChar + "cacerts"; //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$//$NON-NLS-4$
private static String CACERTS_TYPE = "JKS"; //$NON-NLS-1$
private static ServiceTracker trustEngineTracker;
private static BaseAdaptor ADAPTOR;
private static String SIGNED_BUNDLE_SUPPORT = "osgi.support.signature.verify"; //$NON-NLS-1$
private static String SIGNED_CONTENT_SUPPORT = "osgi.signedcontent.support"; //$NON-NLS-1$
private static String OSGI_KEYSTORE = "osgi.framework.keystore"; //$NON-NLS-1$
private static int supportSignedBundles;
private TrustEngineListener trustEngineListener;
private BundleInstallListener installListener;
private ServiceRegistration signedContentFactoryReg;
private ServiceRegistration systemTrustEngineReg;
private ServiceRegistration defaultAuthEngineReg;
private List osgiTrustEngineReg;
private ServiceRegistration legacyFactoryReg;
public void initialize(BaseAdaptor adaptor) {
SignedBundleHook.ADAPTOR = adaptor;
}
public void frameworkStart(BundleContext context) throws BundleException {
// check if load time authority is enabled
if ((supportSignedBundles & VERIFY_AUTHORITY) != 0) {
// install the default bundle install listener
installListener = new BundleInstallListener();
context.addBundleListener(installListener);
// register the default authorization engine
Hashtable properties = new Hashtable(7);
properties.put(Constants.SERVICE_RANKING, new Integer(Integer.MIN_VALUE));
properties.put(SignedContentConstants.AUTHORIZATION_ENGINE, SignedContentConstants.DEFAULT_AUTHORIZATION_ENGINE);
defaultAuthEngineReg = context.registerService(AuthorizationEngine.class.getName(), new DefaultAuthorizationEngine(context, ADAPTOR.getState()), properties);
}
// always register the trust engine
Hashtable trustEngineProps = new Hashtable(7);
trustEngineProps.put(Constants.SERVICE_RANKING, new Integer(Integer.MIN_VALUE));
trustEngineProps.put(SignedContentConstants.TRUST_ENGINE, SignedContentConstants.DEFAULT_TRUST_ENGINE);
KeyStoreTrustEngine systemTrustEngine = new KeyStoreTrustEngine(CACERTS_PATH, CACERTS_TYPE, null, "System"); //$NON-NLS-1$
systemTrustEngineReg = context.registerService(TrustEngine.class.getName(), systemTrustEngine, trustEngineProps);
String osgiTrustPath = context.getProperty(OSGI_KEYSTORE);
if (osgiTrustPath != null) {
try {
URL url = new URL(osgiTrustPath);
if ("file".equals(url.getProtocol())) { //$NON-NLS-1$
trustEngineProps.put(SignedContentConstants.TRUST_ENGINE, OSGI_KEYSTORE);
String path = url.getPath();
osgiTrustEngineReg = new ArrayList(1);
osgiTrustEngineReg.add(context.registerService(TrustEngine.class.getName(), new KeyStoreTrustEngine(path, CACERTS_TYPE, null, OSGI_KEYSTORE), trustEngineProps));
}
} catch (MalformedURLException e) {
SignedBundleHook.log("Invalid setting for " + OSGI_KEYSTORE, FrameworkLogEntry.WARNING, e); //$NON-NLS-1$
}
} else {
String osgiTrustRepoPaths = context.getProperty(Constants.FRAMEWORK_TRUST_REPOSITORIES);
if (osgiTrustRepoPaths != null) {
trustEngineProps.put(SignedContentConstants.TRUST_ENGINE, Constants.FRAMEWORK_TRUST_REPOSITORIES);
StringTokenizer st = new StringTokenizer(osgiTrustRepoPaths, File.pathSeparator);
osgiTrustEngineReg = new ArrayList(1);
while (st.hasMoreTokens()) {
String trustRepoPath = st.nextToken();
osgiTrustEngineReg.add(context.registerService(TrustEngine.class.getName(), new KeyStoreTrustEngine(trustRepoPath, CACERTS_TYPE, null, OSGI_KEYSTORE), trustEngineProps));
}
}
}
if ((supportSignedBundles & VERIFY_TRUST) != 0)
// initialize the trust engine listener only if trust is being established with a trust engine
trustEngineListener = new TrustEngineListener(context);
// always register the signed content factory
signedContentFactoryReg = context.registerService(SignedContentFactory.class.getName(), this, null);
legacyFactoryReg = context.registerService(CertificateVerifierFactory.class.getName(), new LegacyVerifierFactory(this), null);
}
public void frameworkStop(BundleContext context) throws BundleException {
if (legacyFactoryReg != null) {
legacyFactoryReg.unregister();
legacyFactoryReg = null;
}
if (signedContentFactoryReg != null) {
signedContentFactoryReg.unregister();
signedContentFactoryReg = null;
}
if (systemTrustEngineReg != null) {
systemTrustEngineReg.unregister();
systemTrustEngineReg = null;
}
if (osgiTrustEngineReg != null) {
for (Iterator it = osgiTrustEngineReg.iterator(); it.hasNext();)
((ServiceRegistration) it.next()).unregister();
osgiTrustEngineReg = null;
}
if (defaultAuthEngineReg != null) {
defaultAuthEngineReg.unregister();
defaultAuthEngineReg = null;
}
if (trustEngineListener != null) {
trustEngineListener.stopTrustEngineListener();
trustEngineListener = null;
}
if (installListener != null) {
context.removeBundleListener(installListener);
installListener = null;
}
if (trustEngineTracker != null) {
trustEngineTracker.close();
trustEngineTracker = null;
}
}
public void frameworkStopping(BundleContext context) {
// do nothing
}
public void addProperties(Properties properties) {
// do nothing
}
public URLConnection mapLocationToURLConnection(String location) throws IOException {
return null;
}
public void handleRuntimeError(Throwable error) {
// do nothing
}
public FrameworkLog createFrameworkLog() {
return null;
}
public BundleFile wrapBundleFile(BundleFile bundleFile, Object content, BaseData data, boolean base) {
try {
if (bundleFile != null) {
SignedStorageHook hook = (SignedStorageHook) data.getStorageHook(SignedStorageHook.KEY);
SignedBundleFile signedBaseFile;
if (base && hook != null) {
signedBaseFile = new SignedBundleFile(hook.signedContent, supportSignedBundles);
if (hook.signedContent == null) {
signedBaseFile.setBundleFile(bundleFile);
SignedContentImpl signedContent = signedBaseFile.getSignedContent();
hook.signedContent = signedContent != null && signedContent.isSigned() ? signedContent : null;
}
} else
signedBaseFile = new SignedBundleFile(null, supportSignedBundles);
signedBaseFile.setBundleFile(bundleFile);
SignedContentImpl signedContent = signedBaseFile.getSignedContent();
if (signedContent != null && signedContent.isSigned()) {
// only use the signed file if there are certs
signedContent.setContent(signedBaseFile);
bundleFile = signedBaseFile;
}
}
} catch (IOException e) {
SignedBundleHook.log("Bad bundle file: " + bundleFile.getBaseFile(), FrameworkLogEntry.WARNING, e); //$NON-NLS-1$
} catch (GeneralSecurityException e) {
SignedBundleHook.log("Bad bundle file: " + bundleFile.getBaseFile(), FrameworkLogEntry.WARNING, e); //$NON-NLS-1$
}
return bundleFile;
}
public void addHooks(HookRegistry hookRegistry) {
hookRegistry.addAdaptorHook(this);
String[] support = ManifestElement.getArrayFromList(FrameworkProperties.getProperty(SIGNED_CONTENT_SUPPORT, FrameworkProperties.getProperty(SIGNED_BUNDLE_SUPPORT)), ","); //$NON-NLS-1$
for (int i = 0; i < support.length; i++) {
if (SUPPORT_CERTIFICATE.equals(support[i]))
supportSignedBundles |= VERIFY_CERTIFICATE;
else if (SUPPORT_TRUST.equals(support[i]))
supportSignedBundles |= VERIFY_CERTIFICATE | VERIFY_TRUST;
else if (SUPPORT_RUNTIME.equals(support[i]))
supportSignedBundles |= VERIFY_CERTIFICATE | VERIFY_RUNTIME;
else if (SUPPORT_AUTHORITY.equals(support[i]))
supportSignedBundles |= VERIFY_CERTIFICATE | VERIFY_TRUST | VERIFY_AUTHORITY;
else if (SUPPORT_TRUE.equals(support[i]) || SUPPORT_ALL.equals(support[i]))
supportSignedBundles |= VERIFY_ALL;
}
if ((supportSignedBundles & VERIFY_CERTIFICATE) != 0) {
hookRegistry.addStorageHook(new SignedStorageHook());
hookRegistry.addBundleFileWrapperFactoryHook(this);
}
}
public SignedContent getSignedContent(File content) throws IOException, InvalidKeyException, SignatureException, CertificateException, NoSuchAlgorithmException, NoSuchProviderException {
if (content == null)
throw new IllegalArgumentException("null content"); //$NON-NLS-1$
BundleFile contentBundleFile;
if (content.isDirectory())
contentBundleFile = new DirBundleFile(content);
else
contentBundleFile = new ZipBundleFile(content, null);
SignedBundleFile result = new SignedBundleFile(null, VERIFY_ALL);
try {
result.setBundleFile(contentBundleFile);
} catch (InvalidKeyException e) {
throw (InvalidKeyException) new InvalidKeyException(NLS.bind(SignedContentMessages.Factory_SignedContent_Error, content)).initCause(e);
} catch (SignatureException e) {
throw (SignatureException) new SignatureException(NLS.bind(SignedContentMessages.Factory_SignedContent_Error, content)).initCause(e);
} catch (CertificateException e) {
throw (CertificateException) new CertificateException(NLS.bind(SignedContentMessages.Factory_SignedContent_Error, content)).initCause(e);
} catch (NoSuchAlgorithmException e) {
throw (NoSuchAlgorithmException) new NoSuchAlgorithmException(NLS.bind(SignedContentMessages.Factory_SignedContent_Error, content)).initCause(e);
} catch (NoSuchProviderException e) {
throw (NoSuchProviderException) new NoSuchProviderException(NLS.bind(SignedContentMessages.Factory_SignedContent_Error, content)).initCause(e);
}
return new SignedContentFile(result.getSignedContent());
}
public SignedContent getSignedContent(Bundle bundle) throws IOException, InvalidKeyException, SignatureException, CertificateException, NoSuchAlgorithmException, NoSuchProviderException, IllegalArgumentException {
final BundleData data = ((AbstractBundle) bundle).getBundleData();
if (!(data instanceof BaseData))
throw new IllegalArgumentException("Invalid bundle object. No BaseData found."); //$NON-NLS-1$
SignedStorageHook hook = (SignedStorageHook) ((BaseData) data).getStorageHook(SignedStorageHook.KEY);
SignedContent result = hook != null ? hook.signedContent : null;
if (result != null)
return result; // just reuse the signed content the storage hook
// must create a new signed content using the raw file
if (System.getSecurityManager() == null)
return getSignedContent(((BaseData) data).getBundleFile().getBaseFile());
try {
return (SignedContent) AccessController.doPrivileged(new PrivilegedExceptionAction() {
public Object run() throws Exception {
return getSignedContent(((BaseData) data).getBundleFile().getBaseFile());
}
});
} catch (PrivilegedActionException e) {
if (e.getException() instanceof IOException)
throw (IOException) e.getException();
if (e.getException() instanceof InvalidKeyException)
throw (InvalidKeyException) e.getException();
if (e.getException() instanceof SignatureException)
throw (SignatureException) e.getException();
if (e.getException() instanceof CertificateException)
throw (CertificateException) e.getException();
if (e.getException() instanceof NoSuchAlgorithmException)
throw (NoSuchAlgorithmException) e.getException();
if (e.getException() instanceof NoSuchProviderException)
throw (NoSuchProviderException) e.getException();
throw new RuntimeException("Unknown error.", e.getException()); //$NON-NLS-1$
}
}
public static void log(String msg, int severity, Throwable t) {
if (SignedBundleHook.ADAPTOR == null) {
System.err.println(msg);
t.printStackTrace();
return;
}
FrameworkLogEntry entry = new FrameworkLogEntry(FrameworkAdaptor.FRAMEWORK_SYMBOLICNAME, severity, 0, msg, 0, t, null);
SignedBundleHook.ADAPTOR.getFrameworkLog().log(entry);
}
static BundleContext getContext() {
if (ADAPTOR == null)
return null;
return ADAPTOR.getContext();
}
static TrustEngine[] getTrustEngines() {
// find all the trust engines available
BundleContext context = SignedBundleHook.getContext();
if (context == null)
return new TrustEngine[0];
if (trustEngineTracker == null) {
// read the trust provider security property
String trustEngineProp = FrameworkProperties.getProperty(SignedContentConstants.TRUST_ENGINE);
Filter filter = null;
if (trustEngineProp != null)
try {
filter = FilterImpl.newInstance("(&(" + Constants.OBJECTCLASS + "=" + TrustEngine.class.getName() + ")(" + SignedContentConstants.TRUST_ENGINE + "=" + trustEngineProp + "))"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$//$NON-NLS-5$
} catch (InvalidSyntaxException e) {
SignedBundleHook.log("Invalid trust engine filter", FrameworkLogEntry.WARNING, e); //$NON-NLS-1$
}
if (filter != null) {
trustEngineTracker = new ServiceTracker(context, filter, null);
} else
trustEngineTracker = new ServiceTracker(context, TrustEngine.class.getName(), null);
trustEngineTracker.open();
}
Object[] services = trustEngineTracker.getServices();
if (services != null) {
TrustEngine[] engines = new TrustEngine[services.length];
System.arraycopy(services, 0, engines, 0, services.length);
return engines;
}
return new TrustEngine[0];
}
}