| /* |
| * 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.felix.framework; |
| |
| import java.io.IOException; |
| import java.lang.reflect.Constructor; |
| import java.lang.reflect.Method; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.security.AccessController; |
| import java.security.PrivilegedActionException; |
| import java.security.PrivilegedExceptionAction; |
| import java.security.SecureClassLoader; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Set; |
| import java.util.SortedMap; |
| import java.util.TreeMap; |
| import org.apache.felix.framework.cache.JarContent; |
| import org.apache.felix.framework.cache.Content; |
| import org.apache.felix.framework.resolver.ResolveException; |
| import org.apache.felix.framework.resolver.ResourceNotFoundException; |
| import org.apache.felix.framework.util.CompoundEnumeration; |
| import org.apache.felix.framework.util.FelixConstants; |
| import org.apache.felix.framework.util.SecurityManagerEx; |
| import org.apache.felix.framework.util.Util; |
| import org.apache.felix.framework.util.manifestparser.ManifestParser; |
| import org.apache.felix.framework.util.manifestparser.R4Library; |
| import org.apache.felix.framework.wiring.BundleRequirementImpl; |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleException; |
| import org.osgi.framework.BundleReference; |
| import org.osgi.framework.Constants; |
| import org.osgi.framework.FrameworkEvent; |
| import org.osgi.framework.ServiceReference; |
| import org.osgi.framework.hooks.weaving.WeavingException; |
| import org.osgi.framework.hooks.weaving.WeavingHook; |
| import org.osgi.framework.wiring.BundleCapability; |
| import org.osgi.framework.wiring.BundleRequirement; |
| import org.osgi.framework.wiring.BundleRevision; |
| import org.osgi.framework.wiring.BundleWire; |
| import org.osgi.framework.wiring.BundleWiring; |
| |
| public class BundleWiringImpl implements BundleWiring |
| { |
| public final static int EAGER_ACTIVATION = 0; |
| public final static int LAZY_ACTIVATION = 1; |
| |
| private final Logger m_logger; |
| private final Map m_configMap; |
| private final StatefulResolver m_resolver; |
| private final BundleRevisionImpl m_revision; |
| private final List<BundleRevision> m_fragments; |
| // TODO: OSGi R4.3 - Perhaps we should make m_wires and m_importedPkgs volatile |
| // and copy-on-write instead of protecting them with object lock. |
| private final List<BundleWire> m_wires; |
| private final Map<String, BundleRevision> m_importedPkgs; |
| private final Map<String, List<BundleRevision>> m_requiredPkgs; |
| private final List<BundleCapability> m_resolvedCaps; |
| private final List<BundleRequirement> m_resolvedReqs; |
| private final List<R4Library> m_resolvedNativeLibs; |
| private final List<Content> m_fragmentContents; |
| |
| private volatile List<BundleRequirement> m_wovenReqs = null; |
| |
| private BundleClassLoader m_classLoader; |
| private boolean m_isActivationTriggered = false; |
| |
| // Bundle-specific class loader for boot delegation. |
| private final ClassLoader m_bootClassLoader; |
| // Default class loader for boot delegation. |
| private final static ClassLoader m_defBootClassLoader; |
| |
| // Statically define the default class loader for boot delegation. |
| static |
| { |
| ClassLoader cl = null; |
| try |
| { |
| Constructor ctor = BundleRevisionImpl.getSecureAction().getDeclaredConstructor( |
| SecureClassLoader.class, new Class[] { ClassLoader.class }); |
| BundleRevisionImpl.getSecureAction().setAccesssible(ctor); |
| cl = (ClassLoader) BundleRevisionImpl.getSecureAction().invoke( |
| ctor, new Object[] { null }); |
| } |
| catch (Throwable ex) |
| { |
| // On Android we get an exception if we set the parent class loader |
| // to null, so we will work around that case by setting the parent |
| // class loader to the system class loader in getClassLoader() below. |
| cl = null; |
| System.err.println("Problem creating boot delegation class loader: " + ex); |
| } |
| m_defBootClassLoader = cl; |
| } |
| |
| // Boolean flag to enable/disable implicit boot delegation. |
| private final boolean m_implicitBootDelegation; |
| // Boolean flag to enable/disable local URLs. |
| private final boolean m_useLocalURLs; |
| |
| // Re-usable security manager for accessing class context. |
| private static SecurityManagerEx m_sm = new SecurityManagerEx(); |
| |
| // Thread local to detect class loading cycles. |
| private final ThreadLocal m_cycleCheck = new ThreadLocal(); |
| |
| // Thread local to keep track of deferred activation. |
| private static final ThreadLocal m_deferredActivation = new ThreadLocal(); |
| |
| // Flag indicating whether we are on an old JVM or not. |
| private volatile static boolean m_isPreJava5 = false; |
| |
| // Flag indicating whether this wiring has been disposed. |
| private volatile boolean m_isDisposed = false; |
| |
| BundleWiringImpl( |
| Logger logger, Map configMap, StatefulResolver resolver, |
| BundleRevisionImpl revision, List<BundleRevision> fragments, |
| List<BundleWire> wires, |
| Map<String, BundleRevision> importedPkgs, |
| Map<String, List<BundleRevision>> requiredPkgs) |
| throws Exception |
| { |
| m_logger = logger; |
| m_configMap = configMap; |
| m_resolver = resolver; |
| m_revision = revision; |
| m_importedPkgs = importedPkgs; |
| m_requiredPkgs = requiredPkgs; |
| m_wires = wires; |
| |
| // We need to sort the fragments and add ourself as a dependent of each one. |
| // We also need to create an array of fragment contents to attach to our |
| // content path. |
| List<Content> fragmentContents = null; |
| if (fragments != null) |
| { |
| // Sort fragments according to ID order, if necessary. |
| // Note that this sort order isn't 100% correct since |
| // it uses a string, but it is likely close enough and |
| // avoids having to create more objects. |
| if (fragments.size() > 1) |
| { |
| SortedMap<String, BundleRevision> sorted = new TreeMap<String, BundleRevision>(); |
| for (BundleRevision f : fragments) |
| { |
| sorted.put(((BundleRevisionImpl) f).getId(), f); |
| } |
| fragments = new ArrayList(sorted.values()); |
| } |
| fragmentContents = new ArrayList<Content>(fragments.size()); |
| for (int i = 0; (fragments != null) && (i < fragments.size()); i++) |
| { |
| fragmentContents.add( |
| ((BundleRevisionImpl) fragments.get(i)).getContent() |
| .getEntryAsContent(FelixConstants.CLASS_PATH_DOT)); |
| } |
| } |
| m_fragments = fragments; |
| m_fragmentContents = fragmentContents; |
| |
| // Calculate resolved list of requirements, which includes: |
| // 1. All requirements for which we have a wire. |
| // 2. All dynamic imports from the host and any fragments. |
| // Also create set of imported packages so we can eliminate any |
| // substituted exports from our resolved capabilities. |
| Set<String> imports = new HashSet<String>(); |
| List<BundleRequirement> reqList = new ArrayList<BundleRequirement>(); |
| // First add resolved requirements from wires. |
| for (BundleWire bw : wires) |
| { |
| // Fragments may have multiple wires for the same requirement, so we |
| // need to check for and avoid duplicates in that case. |
| if (!bw.getRequirement().getNamespace().equals(BundleRevision.HOST_NAMESPACE) |
| || !reqList.contains(bw.getRequirement())) |
| { |
| reqList.add(bw.getRequirement()); |
| if (bw.getRequirement().getNamespace().equals(BundleRevision.PACKAGE_NAMESPACE)) |
| { |
| imports.add((String) |
| bw.getCapability().getAttributes().get(BundleRevision.PACKAGE_NAMESPACE)); |
| } |
| } |
| } |
| // Next add dynamic requirements from host. |
| for (BundleRequirement req : m_revision.getDeclaredRequirements(null)) |
| { |
| if (req.getNamespace().equals(BundleRevision.PACKAGE_NAMESPACE)) |
| { |
| String resolution = req.getDirectives().get(Constants.RESOLUTION_DIRECTIVE); |
| if ((resolution != null) && (resolution.equals("dynamic"))) |
| { |
| reqList.add(req); |
| } |
| } |
| } |
| // Finally, add dynamic requirements from fragments. |
| if (m_fragments != null) |
| { |
| for (BundleRevision fragment : m_fragments) |
| { |
| for (BundleRequirement req : fragment.getDeclaredRequirements(null)) |
| { |
| if (req.getNamespace().equals(BundleRevision.PACKAGE_NAMESPACE)) |
| { |
| String resolution = req.getDirectives().get(Constants.RESOLUTION_DIRECTIVE); |
| if ((resolution != null) && (resolution.equals("dynamic"))) |
| { |
| reqList.add(req); |
| } |
| } |
| } |
| } |
| } |
| m_resolvedReqs = Collections.unmodifiableList(reqList); |
| |
| // Calculate resolved list of capabilities, which includes: |
| // 1. All capabilities from host and any fragments except for exported |
| // packages that we have an import (i.e., the export was substituted). |
| // And nothing else at this time. Fragments currently have no capabilities. |
| boolean isFragment = Util.isFragment(revision); |
| List<BundleCapability> capList = (isFragment) |
| ? Collections.EMPTY_LIST |
| : new ArrayList<BundleCapability>(); |
| // TODO: OSGi R4.4 - Fragments currently have no capabilities, but they may |
| // have an identity capability in the future. |
| if (!isFragment) |
| { |
| for (BundleCapability cap : m_revision.getDeclaredCapabilities(null)) |
| { |
| if (!cap.getNamespace().equals(BundleRevision.PACKAGE_NAMESPACE) |
| || (cap.getNamespace().equals(BundleRevision.PACKAGE_NAMESPACE) |
| && !imports.contains(cap.getAttributes() |
| .get(BundleRevision.PACKAGE_NAMESPACE).toString()))) |
| { |
| // TODO: OSGi R4.4 - We may need to make this more flexible since in the future it may |
| // be possible to consider other effective values via OBR's Environment.isEffective(). |
| String effective = cap.getDirectives().get(Constants.EFFECTIVE_DIRECTIVE); |
| if ((effective == null) || (effective.equals(Constants.EFFECTIVE_RESOLVE))) |
| { |
| capList.add(cap); |
| } |
| } |
| } |
| if (m_fragments != null) |
| { |
| for (BundleRevision fragment : m_fragments) |
| { |
| for (BundleCapability cap : fragment.getDeclaredCapabilities(null)) |
| { |
| // TODO: OSGi R4.4 - OSGi R4.4 may introduce an identity capability, if so |
| // that will need to be excluded from here. |
| if (!cap.getNamespace().equals(BundleRevision.PACKAGE_NAMESPACE) |
| || (cap.getNamespace().equals(BundleRevision.PACKAGE_NAMESPACE) |
| && !imports.contains(cap.getAttributes() |
| .get(BundleRevision.PACKAGE_NAMESPACE).toString()))) |
| { |
| // TODO: OSGi R4.4 - We may need to make this more flexible since in the future it may |
| // be possible to consider other effective values via OBR's Environment.isEffective(). |
| String effective = cap.getDirectives().get(Constants.EFFECTIVE_DIRECTIVE); |
| if ((effective == null) || (effective.equals(Constants.EFFECTIVE_RESOLVE))) |
| { |
| capList.add(cap); |
| } |
| } |
| } |
| } |
| } |
| } |
| m_resolvedCaps = Collections.unmodifiableList(capList); |
| |
| List<R4Library> libList = (m_revision.getDeclaredNativeLibraries() == null) |
| ? new ArrayList<R4Library>() |
| : new ArrayList<R4Library>(m_revision.getDeclaredNativeLibraries()); |
| for (int fragIdx = 0; |
| (m_fragments != null) && (fragIdx < m_fragments.size()); |
| fragIdx++) |
| { |
| List<R4Library> libs = |
| ((BundleRevisionImpl) m_fragments.get(fragIdx)) |
| .getDeclaredNativeLibraries(); |
| for (int reqIdx = 0; |
| (libs != null) && (reqIdx < libs.size()); |
| reqIdx++) |
| { |
| libList.add(libs.get(reqIdx)); |
| } |
| } |
| // We need to return null here if we don't have any libraries, since a |
| // zero-length array is used to indicate that matching native libraries |
| // could not be found when resolving the bundle. |
| m_resolvedNativeLibs = (libList.isEmpty()) |
| ? null |
| : Collections.unmodifiableList(libList); |
| |
| ClassLoader bootLoader = m_defBootClassLoader; |
| if (revision.getBundle().getBundleId() != 0) |
| { |
| Object map = m_configMap.get(FelixConstants.BOOT_CLASSLOADERS_PROP); |
| if (map instanceof Map) |
| { |
| Object l = ((Map) map).get(m_revision.getBundle()); |
| if (l instanceof ClassLoader) |
| { |
| bootLoader = (ClassLoader) l; |
| } |
| } |
| } |
| m_bootClassLoader = bootLoader; |
| |
| m_implicitBootDelegation = |
| (m_configMap.get(FelixConstants.IMPLICIT_BOOT_DELEGATION_PROP) == null) |
| || Boolean.valueOf( |
| (String) m_configMap.get( |
| FelixConstants.IMPLICIT_BOOT_DELEGATION_PROP)).booleanValue(); |
| |
| m_useLocalURLs = |
| (m_configMap.get(FelixConstants.USE_LOCALURLS_PROP) == null) |
| ? false : true; |
| } |
| |
| public synchronized void dispose() |
| { |
| if (m_fragmentContents != null) |
| { |
| for (Content content : m_fragmentContents) |
| { |
| content.close(); |
| } |
| } |
| m_classLoader = null; |
| m_isDisposed = true; |
| } |
| |
| // TODO: OSGi R4.3 - This really shouldn't be public, but it is needed by the |
| // resolver to determine if a bundle can dynamically import. |
| public synchronized boolean hasPackageSource(String pkgName) |
| { |
| return (m_importedPkgs.containsKey(pkgName) || m_requiredPkgs.containsKey(pkgName)); |
| } |
| |
| // TODO: OSGi R4.3 - This really shouldn't be public, but it is needed by the |
| // to implement dynamic imports. |
| public synchronized BundleRevision getImportedPackageSource(String pkgName) |
| { |
| return m_importedPkgs.get(pkgName); |
| } |
| |
| List<BundleRevision> getFragments() |
| { |
| return m_fragments; |
| } |
| |
| List<Content> getFragmentContents() |
| { |
| return m_fragmentContents; |
| } |
| |
| public boolean isCurrent() |
| { |
| BundleRevision current = getBundle().adapt(BundleRevision.class); |
| return (current != null) && (current.getWiring() == this); |
| } |
| |
| public synchronized boolean isInUse() |
| { |
| return !m_isDisposed; |
| } |
| |
| public List<BundleCapability> getCapabilities(String namespace) |
| { |
| if (isInUse()) |
| { |
| List<BundleCapability> result = m_resolvedCaps; |
| if (namespace != null) |
| { |
| result = new ArrayList<BundleCapability>(); |
| for (BundleCapability cap : m_resolvedCaps) |
| { |
| if (cap.getNamespace().equals(namespace)) |
| { |
| result.add(cap); |
| } |
| } |
| } |
| return result; |
| } |
| return null; |
| } |
| |
| public List<BundleRequirement> getRequirements(String namespace) |
| { |
| if (isInUse()) |
| { |
| List<BundleRequirement> searchReqs = m_resolvedReqs; |
| List<BundleRequirement> wovenReqs = m_wovenReqs; |
| List<BundleRequirement> result = m_resolvedReqs; |
| |
| if (wovenReqs != null) |
| { |
| searchReqs = new ArrayList<BundleRequirement>(m_resolvedReqs); |
| searchReqs.addAll(wovenReqs); |
| result = searchReqs; |
| } |
| |
| if (namespace != null) |
| { |
| result = new ArrayList<BundleRequirement>(); |
| for (BundleRequirement req : searchReqs) |
| { |
| if (req.getNamespace().equals(namespace)) |
| { |
| result.add(req); |
| } |
| } |
| } |
| return result; |
| } |
| return null; |
| } |
| |
| public List<R4Library> getNativeLibraries() |
| { |
| return m_resolvedNativeLibs; |
| } |
| |
| public List<BundleWire> getProvidedWires(String namespace) |
| { |
| if (isInUse()) |
| { |
| return ((BundleImpl) m_revision.getBundle()) |
| .getFramework().getDependencies().getProvidedWires(m_revision, namespace); |
| } |
| return null; |
| } |
| |
| public synchronized List<BundleWire> getRequiredWires(String namespace) |
| { |
| if (isInUse()) |
| { |
| List<BundleWire> result = m_wires; |
| if (namespace != null) |
| { |
| result = new ArrayList<BundleWire>(); |
| for (BundleWire bw : m_wires) |
| { |
| if (bw.getRequirement().getNamespace().equals(namespace)) |
| { |
| result.add(bw); |
| } |
| } |
| } |
| return result; |
| } |
| return null; |
| } |
| |
| public synchronized void addDynamicWire(BundleWire wire) |
| { |
| m_wires.add(wire); |
| m_importedPkgs.put( |
| (String) wire.getCapability().getAttributes().get(BundleRevision.PACKAGE_NAMESPACE), |
| wire.getProviderWiring().getRevision()); |
| } |
| |
| public BundleRevision getRevision() |
| { |
| return m_revision; |
| } |
| |
| public synchronized ClassLoader getClassLoader() |
| { |
| if (m_isDisposed) |
| { |
| return null; |
| } |
| if (m_classLoader == null) |
| { |
| // Determine which class loader to use based on which |
| // Java platform we are running on. |
| Class clazz; |
| if (m_isPreJava5) |
| { |
| clazz = BundleClassLoader.class; |
| } |
| else |
| { |
| try |
| { |
| clazz = BundleClassLoaderJava5.class; |
| } |
| catch (Throwable th) |
| { |
| // If we are on pre-Java5 then we will get a verify error |
| // here since we try to override a getResources() which is |
| // a final method in pre-Java5. |
| m_isPreJava5 = true; |
| clazz = BundleClassLoader.class; |
| } |
| } |
| |
| // Use SecureAction to create the class loader if security is |
| // enabled; otherwise, create it directly. |
| try |
| { |
| Constructor ctor = (Constructor) BundleRevisionImpl.getSecureAction() |
| .getConstructor(clazz, new Class[] { BundleWiringImpl.class, ClassLoader.class }); |
| m_classLoader = (BundleClassLoader) |
| BundleRevisionImpl.getSecureAction().invoke(ctor, |
| new Object[] { this, determineParentClassLoader() }); |
| } |
| catch (Exception ex) |
| { |
| throw new RuntimeException("Unable to create module class loader: " |
| + ex.getMessage() + " [" + ex.getClass().getName() + "]"); |
| } |
| } |
| return m_classLoader; |
| } |
| |
| public List<URL> findEntries(String path, String filePattern, int options) |
| { |
| if (isInUse()) |
| { |
| if (!Util.isFragment(m_revision)) |
| { |
| Enumeration<URL> e = |
| ((BundleImpl) m_revision.getBundle()).getFramework() |
| .findBundleEntries(m_revision, path, filePattern, |
| (options & BundleWiring.FINDENTRIES_RECURSE) > 0); |
| List<URL> entries = new ArrayList<URL>(); |
| while ((e != null) && e.hasMoreElements()) |
| { |
| entries.add(e.nextElement()); |
| } |
| return Collections.unmodifiableList(entries); |
| } |
| return Collections.EMPTY_LIST; |
| } |
| return null; |
| } |
| |
| public Collection<String> listResources(String path, String filePattern, int options) |
| { |
| if (isInUse()) |
| { |
| throw new UnsupportedOperationException("Not supported yet."); |
| } |
| return null; |
| } |
| |
| public Bundle getBundle() |
| { |
| return m_revision.getBundle(); |
| } |
| |
| // |
| // Class loader implementation methods. |
| // |
| |
| private URL createURL(int port, String path) |
| { |
| // Add a slash if there is one already, otherwise |
| // the is no slash separating the host from the file |
| // in the resulting URL. |
| if (!path.startsWith("/")) |
| { |
| path = "/" + path; |
| } |
| |
| try |
| { |
| return BundleRevisionImpl.getSecureAction().createURL(null, |
| FelixConstants.BUNDLE_URL_PROTOCOL + "://" + |
| m_revision.getId() + ":" + port + path, m_revision.getURLStreamHandler()); |
| } |
| catch (MalformedURLException ex) |
| { |
| m_logger.log(m_revision.getBundle(), |
| Logger.LOG_ERROR, |
| "Unable to create resource URL.", |
| ex); |
| } |
| return null; |
| } |
| |
| public Enumeration getResourcesByDelegation(String name) |
| { |
| Set requestSet = (Set) m_cycleCheck.get(); |
| if (requestSet == null) |
| { |
| requestSet = new HashSet(); |
| m_cycleCheck.set(requestSet); |
| } |
| if (!requestSet.contains(name)) |
| { |
| requestSet.add(name); |
| try |
| { |
| return findResourcesByDelegation(name); |
| } |
| finally |
| { |
| requestSet.remove(name); |
| } |
| } |
| |
| return null; |
| } |
| |
| private Enumeration findResourcesByDelegation(String name) |
| { |
| Enumeration urls = null; |
| List completeUrlList = new ArrayList(); |
| |
| // First, try to resolve the originating module. |
| try |
| { |
| m_resolver.resolve(m_revision); |
| } |
| catch (Exception ex) |
| { |
| // The spec states that if the bundle cannot be resolved, then |
| // only the local bundle's resources should be searched. So we |
| // will ask the module's own class path. |
| return m_revision.getResourcesLocal(name); |
| } |
| |
| // Get the package of the target class/resource. |
| String pkgName = Util.getResourcePackage(name); |
| |
| // Delegate any packages listed in the boot delegation |
| // property to the parent class loader. |
| if (shouldBootDelegate(pkgName)) |
| { |
| try |
| { |
| // Get the appropriate class loader for delegation. |
| ClassLoader bdcl = getBootDelegationClassLoader(); |
| urls = bdcl.getResources(name); |
| } |
| catch (IOException ex) |
| { |
| // This shouldn't happen and even if it does, there |
| // is nothing we can do, so just ignore it. |
| } |
| // If this is a java.* package, then always terminate the |
| // search; otherwise, continue to look locally. |
| if (pkgName.startsWith("java.")) |
| { |
| return urls; |
| } |
| |
| completeUrlList.add(urls); |
| } |
| |
| // Look in the revisions's imported packages. If the package is |
| // imported, then we stop searching no matter the result since |
| // imported packages cannot be split. |
| // TODO: OSGi R4.3 - Access should be guarded by object lock. |
| BundleRevision provider = m_importedPkgs.get(pkgName); |
| if (provider != null) |
| { |
| // Delegate to the provider revision. |
| urls = ((BundleWiringImpl) provider.getWiring()).getResourcesByDelegation(name); |
| |
| // If we find any resources, then add them. |
| if ((urls != null) && (urls.hasMoreElements())) |
| { |
| completeUrlList.add(urls); |
| } |
| |
| // Always return here since imported packages cannot be split |
| // across required bundles or the revision's content. |
| return new CompoundEnumeration((Enumeration[]) |
| completeUrlList.toArray(new Enumeration[completeUrlList.size()])); |
| } |
| |
| // See whether we can get the resource from the required bundles and |
| // regardless of whether or not this is the case continue to the next |
| // step potentially passing on the result of this search (if any). |
| List<BundleRevision> providers = m_requiredPkgs.get(pkgName); |
| if (providers != null) |
| { |
| for (BundleRevision p : providers) |
| { |
| // Delegate to the provider revision. |
| urls = ((BundleWiringImpl) p.getWiring()).getResourcesByDelegation(name); |
| |
| // If we find any resources, then add them. |
| if ((urls != null) && (urls.hasMoreElements())) |
| { |
| completeUrlList.add(urls); |
| } |
| |
| // Do not return here, since required packages can be split |
| // across the revision's content. |
| } |
| } |
| |
| // Try the module's own class path. If we can find the resource then |
| // return it together with the results from the other searches else |
| // try to look into the dynamic imports. |
| urls = m_revision.getResourcesLocal(name); |
| if ((urls != null) && (urls.hasMoreElements())) |
| { |
| completeUrlList.add(urls); |
| } |
| else |
| { |
| // If not found, then try the module's dynamic imports. |
| // At this point, the module's imports were searched and so was the |
| // the module's content. Now we make an attempt to load the |
| // class/resource via a dynamic import, if possible. |
| try |
| { |
| provider = m_resolver.resolve(m_revision, pkgName); |
| } |
| catch (ResolveException ex) |
| { |
| // Ignore this since it is likely normal. |
| } |
| catch (BundleException ex) |
| { |
| // Ignore this since it is likely the result of a resolver hook. |
| } |
| if (provider != null) |
| { |
| // Delegate to the provider revision. |
| urls = ((BundleWiringImpl) provider.getWiring()).getResourcesByDelegation(name); |
| |
| // If we find any resources, then add them. |
| if ((urls != null) && (urls.hasMoreElements())) |
| { |
| completeUrlList.add(urls); |
| } |
| } |
| } |
| |
| return new CompoundEnumeration((Enumeration[]) |
| completeUrlList.toArray(new Enumeration[completeUrlList.size()])); |
| } |
| |
| private ClassLoader determineParentClassLoader() |
| { |
| // Determine the class loader's parent based on the |
| // configuration property; use boot class loader by |
| // default. |
| String cfg = (String) m_configMap.get(Constants.FRAMEWORK_BUNDLE_PARENT); |
| cfg = (cfg == null) ? Constants.FRAMEWORK_BUNDLE_PARENT_BOOT : cfg; |
| final ClassLoader parent; |
| if (cfg.equalsIgnoreCase(Constants.FRAMEWORK_BUNDLE_PARENT_APP)) |
| { |
| parent = BundleRevisionImpl.getSecureAction().getSystemClassLoader(); |
| } |
| else if (cfg.equalsIgnoreCase(Constants.FRAMEWORK_BUNDLE_PARENT_EXT)) |
| { |
| parent = BundleRevisionImpl.getSecureAction().getParentClassLoader( |
| BundleRevisionImpl.getSecureAction().getSystemClassLoader()); |
| } |
| else if (cfg.equalsIgnoreCase(Constants.FRAMEWORK_BUNDLE_PARENT_FRAMEWORK)) |
| { |
| parent = BundleRevisionImpl.getSecureAction() |
| .getClassLoader(BundleRevisionImpl.class); |
| } |
| // On Android we cannot set the parent class loader to be null, so |
| // we special case that situation here and set it to the system |
| // class loader by default instead, which is not really spec. |
| else if (m_bootClassLoader == null) |
| { |
| parent = BundleRevisionImpl.getSecureAction().getSystemClassLoader(); |
| } |
| else |
| { |
| parent = null; |
| } |
| return parent; |
| } |
| |
| boolean shouldBootDelegate(String pkgName) |
| { |
| // Always boot delegate if the bundle has a configured |
| // boot class loader. |
| if (m_bootClassLoader != m_defBootClassLoader) |
| { |
| return true; |
| } |
| |
| boolean result = false; |
| |
| // Only consider delegation if we have a package name, since |
| // we don't want to promote the default package. The spec does |
| // not take a stand on this issue. |
| if (pkgName.length() > 0) |
| { |
| for (int i = 0; !result && (i < m_revision.getBootDelegationPackages().length); i++) |
| { |
| // Check if the boot package is wildcarded. |
| // A wildcarded boot package will be in the form "foo.", |
| // so a matching subpackage will start with "foo.", e.g., |
| // "foo.bar". |
| if (m_revision.getBootDelegationPackageWildcards()[i] |
| && pkgName.startsWith(m_revision.getBootDelegationPackages()[i])) |
| { |
| return true; |
| } |
| // If not wildcarded, then check for an exact match. |
| else if (m_revision.getBootDelegationPackages()[i].equals(pkgName)) |
| { |
| return true; |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| synchronized ClassLoader getBootDelegationClassLoader() |
| { |
| // Get the appropriate class loader for delegation. |
| ClassLoader parent = (m_classLoader == null) |
| ? determineParentClassLoader() : m_classLoader.getParent(); |
| return (parent == null) ? m_bootClassLoader : parent; |
| } |
| |
| private static final Constructor m_dexFileClassConstructor; |
| private static final Method m_dexFileClassLoadDex; |
| private static final Method m_dexFileClassLoadClass; |
| |
| static |
| { |
| Constructor dexFileClassConstructor = null; |
| Method dexFileClassLoadDex = null; |
| Method dexFileClassLoadClass = null; |
| try |
| { |
| Class dexFileClass; |
| try |
| { |
| dexFileClass = Class.forName("dalvik.system.DexFile"); |
| } |
| catch (Exception ex) |
| { |
| dexFileClass = Class.forName("android.dalvik.DexFile"); |
| } |
| |
| try |
| { |
| dexFileClassLoadDex = dexFileClass.getMethod("loadDex", |
| new Class[]{String.class, String.class, Integer.TYPE}); |
| } |
| catch (Exception ex) |
| { |
| // Nothing we need to do |
| } |
| dexFileClassConstructor = dexFileClass.getConstructor( |
| new Class[] { java.io.File.class }); |
| dexFileClassLoadClass = dexFileClass.getMethod("loadClass", |
| new Class[] { String.class, ClassLoader.class }); |
| } |
| catch (Throwable ex) |
| { |
| dexFileClassConstructor = null; |
| dexFileClassLoadDex = null; |
| dexFileClassLoadClass = null; |
| } |
| m_dexFileClassConstructor = dexFileClassConstructor; |
| m_dexFileClassLoadDex= dexFileClassLoadDex; |
| m_dexFileClassLoadClass = dexFileClassLoadClass; |
| } |
| |
| public Class getClassByDelegation(String name) throws ClassNotFoundException |
| { |
| // We do not call getClassLoader().loadClass() for arrays because |
| // it does not correctly handle array types, which is necessary in |
| // cases like deserialization using a wrapper class loader. |
| if ((name != null) && (name.length() > 0) && (name.charAt(0) == '[')) |
| { |
| return Class.forName(name, false, getClassLoader()); |
| } |
| return getClassLoader().loadClass(name); |
| } |
| |
| public URL getResourceByDelegation(String name) |
| { |
| try |
| { |
| return (URL) findClassOrResourceByDelegation(name, false); |
| } |
| catch (ClassNotFoundException ex) |
| { |
| // This should never be thrown because we are loading resources. |
| } |
| catch (ResourceNotFoundException ex) |
| { |
| m_logger.log(m_revision.getBundle(), |
| Logger.LOG_DEBUG, |
| ex.getMessage()); |
| } |
| return null; |
| } |
| |
| private Object findClassOrResourceByDelegation(String name, boolean isClass) |
| throws ClassNotFoundException, ResourceNotFoundException |
| { |
| Object result = null; |
| |
| Set requestSet = (Set) m_cycleCheck.get(); |
| if (requestSet == null) |
| { |
| requestSet = new HashSet(); |
| m_cycleCheck.set(requestSet); |
| } |
| if (requestSet.add(name)) |
| { |
| try |
| { |
| // First, try to resolve the originating revision. |
| m_resolver.resolve(m_revision); |
| |
| // Get the package of the target class/resource. |
| String pkgName = (isClass) |
| ? Util.getClassPackage(name) |
| : Util.getResourcePackage(name); |
| |
| // Delegate any packages listed in the boot delegation |
| // property to the parent class loader. |
| if (shouldBootDelegate(pkgName)) |
| { |
| try |
| { |
| // Get the appropriate class loader for delegation. |
| ClassLoader bdcl = getBootDelegationClassLoader(); |
| result = (isClass) |
| ? (Object) bdcl.loadClass(name) |
| : (Object) bdcl.getResource(name); |
| // If this is a java.* package, then always terminate the |
| // search; otherwise, continue to look locally if not found. |
| if (pkgName.startsWith("java.") || (result != null)) |
| { |
| return result; |
| } |
| } |
| catch (ClassNotFoundException ex) |
| { |
| // If this is a java.* package, then always terminate the |
| // search; otherwise, continue to look locally if not found. |
| if (pkgName.startsWith("java.")) |
| { |
| throw ex; |
| } |
| } |
| } |
| |
| // Look in the revision's imports. Note that the search may |
| // be aborted if this method throws an exception, otherwise |
| // it continues if a null is returned. |
| result = searchImports(pkgName, name, isClass); |
| |
| // If not found, try the revision's own class path. |
| if (result == null) |
| { |
| result = (isClass) |
| ? (Object) ((BundleClassLoader) getClassLoader()).findClass(name) |
| : (Object) m_revision.getResourceLocal(name); |
| |
| // If still not found, then try the revision's dynamic imports. |
| if (result == null) |
| { |
| result = searchDynamicImports(pkgName, name, isClass); |
| } |
| } |
| } |
| // TODO: OSGi R4.3 - If we eliminate resolving from this method, then we can |
| // simplify this catch, since resolve throws resolve and bundle exceptions. |
| catch (Exception ex) |
| { |
| if (!isClass && (ex instanceof ResolveException)) |
| { |
| // The spec states that if the bundle cannot be resolved, then |
| // only the local bundle's resources should be searched. So we |
| // will ask the module's own class path. |
| URL url = m_revision.getResourceLocal(name); |
| if (url != null) |
| { |
| return url; |
| } |
| } |
| |
| if (isClass) |
| { |
| if (!(ex instanceof ClassNotFoundException)) |
| { |
| ClassNotFoundException cnfe = new ClassNotFoundException( |
| name |
| + " not found in " |
| + getBundle() |
| + " : " |
| + ex.getMessage()); |
| ex.printStackTrace(); |
| cnfe.initCause(ex); |
| throw cnfe; |
| } |
| throw (ClassNotFoundException) ex; |
| } |
| else |
| { |
| if (!(ex instanceof ResourceNotFoundException)) |
| { |
| ResourceNotFoundException rnfe = new ResourceNotFoundException( |
| name |
| + " not found in " |
| + getBundle() |
| + " : " |
| + ex.getMessage()); |
| rnfe.initCause(ex); |
| throw rnfe; |
| } |
| throw (ResourceNotFoundException) ex; |
| } |
| } |
| finally |
| { |
| requestSet.remove(name); |
| } |
| } |
| else |
| { |
| // If a cycle is detected, we should return null to break the |
| // cycle. This should only ever be return to internal class |
| // loading code and not to the actual instigator of the class load. |
| return null; |
| } |
| |
| if (result == null) |
| { |
| if (isClass) |
| { |
| throw new ClassNotFoundException( |
| name + " not found by " + this.getBundle()); |
| } |
| else |
| { |
| throw new ResourceNotFoundException( |
| name + " not found by " + this.getBundle()); |
| } |
| } |
| |
| return result; |
| } |
| |
| private Object searchImports(String pkgName, String name, boolean isClass) |
| throws ClassNotFoundException, ResourceNotFoundException |
| { |
| // Check if the package is imported. |
| // TODO: OSGi R4.3 - Access should be guarded by object lock. |
| BundleRevision provider = m_importedPkgs.get(pkgName); |
| if (provider != null) |
| { |
| // If we find the class or resource, then return it. |
| Object result = (isClass) |
| ? (Object) ((BundleWiringImpl) provider.getWiring()).getClassByDelegation(name) |
| : (Object) ((BundleWiringImpl) provider.getWiring()).getResourceByDelegation(name); |
| if (result != null) |
| { |
| return result; |
| } |
| |
| // If no class or resource was found, then we must throw an exception |
| // since the provider of this package did not contain the |
| // requested class and imported packages are atomic. |
| if (isClass) |
| { |
| throw new ClassNotFoundException(name); |
| } |
| throw new ResourceNotFoundException(name); |
| } |
| |
| // Check if the package is required. |
| List<BundleRevision> providers = m_requiredPkgs.get(pkgName); |
| if (providers != null) |
| { |
| for (BundleRevision p : providers) |
| { |
| // If we find the class or resource, then return it. |
| try |
| { |
| Object result = (isClass) |
| ? (Object) ((BundleWiringImpl) p.getWiring()).getClassByDelegation(name) |
| : (Object) ((BundleWiringImpl) p.getWiring()).getResourceByDelegation(name); |
| if (result != null) |
| { |
| return result; |
| } |
| } |
| catch (ClassNotFoundException ex) |
| { |
| // Since required packages can be split, don't throw an |
| // exception here if it is not found. Instead, we'll just |
| // continue searching other required bundles and the |
| // revision's local content. |
| } |
| } |
| } |
| |
| return null; |
| } |
| |
| private Object searchDynamicImports( |
| final String pkgName, final String name, final boolean isClass) |
| throws ClassNotFoundException, ResourceNotFoundException |
| { |
| // At this point, the module's imports were searched and so was the |
| // the module's content. Now we make an attempt to load the |
| // class/resource via a dynamic import, if possible. |
| BundleRevision provider = null; |
| try |
| { |
| provider = m_resolver.resolve(m_revision, pkgName); |
| } |
| catch (ResolveException ex) |
| { |
| // Ignore this since it is likely normal. |
| } |
| catch (BundleException ex) |
| { |
| // Ignore this since it is likely the result of a resolver hook. |
| } |
| |
| // If the dynamic import was successful, then this initial |
| // time we must directly return the result from dynamically |
| // created package sources, but subsequent requests for |
| // classes/resources in the associated package will be |
| // processed as part of normal static imports. |
| if (provider != null) |
| { |
| // Return the class or resource. |
| return (isClass) |
| ? (Object) ((BundleWiringImpl) provider.getWiring()).getClassByDelegation(name) |
| : (Object) ((BundleWiringImpl) provider.getWiring()).getResourceByDelegation(name); |
| } |
| |
| // If implicit boot delegation is enabled, then try to guess whether |
| // we should boot delegate. |
| if (m_implicitBootDelegation) |
| { |
| // At this point, the class/resource could not be found by the bundle's |
| // static or dynamic imports, nor its own content. Before we throw |
| // an exception, we will try to determine if the instigator of the |
| // class/resource load was a class from a bundle or not. This is necessary |
| // because the specification mandates that classes on the class path |
| // should be hidden (except for java.*), but it does allow for these |
| // classes/resources to be exposed by the system bundle as an export. |
| // However, in some situations classes on the class path make the faulty |
| // assumption that they can access everything on the class path from |
| // every other class loader that they come in contact with. This is |
| // not true if the class loader in question is from a bundle. Thus, |
| // this code tries to detect that situation. If the class instigating |
| // the load request was NOT from a bundle, then we will make the |
| // assumption that the caller actually wanted to use the parent class |
| // loader and we will delegate to it. If the class was |
| // from a bundle, then we will enforce strict class loading rules |
| // for the bundle and throw an exception. |
| |
| // Get the class context to see the classes on the stack. |
| final Class[] classes = m_sm.getClassContext(); |
| try |
| { |
| if (System.getSecurityManager() != null) |
| { |
| return AccessController |
| .doPrivileged(new PrivilegedExceptionAction() |
| { |
| public Object run() throws Exception |
| { |
| return doImplicitBootDelegation(classes, name, |
| isClass); |
| } |
| }); |
| } |
| else |
| { |
| return doImplicitBootDelegation(classes, name, isClass); |
| } |
| } |
| catch (PrivilegedActionException ex) |
| { |
| Exception cause = ex.getException(); |
| if (cause instanceof ClassNotFoundException) |
| { |
| throw (ClassNotFoundException) cause; |
| } |
| else |
| { |
| throw (ResourceNotFoundException) cause; |
| } |
| } |
| } |
| return null; |
| } |
| |
| private Object doImplicitBootDelegation(Class[] classes, String name, boolean isClass) |
| throws ClassNotFoundException, ResourceNotFoundException |
| { |
| // Start from 1 to skip security manager class. |
| for (int i = 1; i < classes.length; i++) |
| { |
| // Find the first class on the call stack that is not from |
| // the class loader that loaded the Felix classes or is not |
| // a class loader or class itself, because we want to ignore |
| // calls to ClassLoader.loadClass() and Class.forName() since |
| // we are trying to find out who instigated the class load. |
| // Also ignore inner classes of class loaders, since we can |
| // assume they are a class loader too. |
| |
| // TODO: FRAMEWORK - This check is a hack and we should see if we can think |
| // of another way to do it, since it won't necessarily work in all situations. |
| // Since Felix uses threads for changing the start level |
| // and refreshing packages, it is possible that there are no |
| // bundle classes on the call stack; therefore, as soon as we |
| // see Thread on the call stack we exit this loop. Other cases |
| // where bundles actually use threads are not an issue because |
| // the bundle classes will be on the call stack before the |
| // Thread class. |
| if (Thread.class.equals(classes[i])) |
| { |
| break; |
| } |
| // Break if the current class came from a bundle, since we should |
| // not implicitly boot delegate in that case. |
| else if (isClassLoadedFromBundleRevision(classes[i])) |
| { |
| break; |
| } |
| // Break if this goes through BundleImpl because it must be a call |
| // to Bundle.loadClass() which should not implicitly boot delegate. |
| else if (BundleImpl.class.equals(classes[i])) |
| { |
| break; |
| } |
| else if (isClassExternal(classes[i])) |
| { |
| try |
| { |
| // Return the class or resource from the parent class loader. |
| return (isClass) |
| ? (Object) BundleRevisionImpl.getSecureAction() |
| .getClassLoader(this.getClass()).loadClass(name) |
| : (Object) BundleRevisionImpl.getSecureAction() |
| .getClassLoader(this.getClass()).getResource(name); |
| } |
| catch (NoClassDefFoundError ex) |
| { |
| // Ignore, will return null |
| } |
| break; |
| } |
| } |
| |
| return null; |
| } |
| |
| private boolean isClassLoadedFromBundleRevision(Class clazz) |
| { |
| // The target class is loaded by a bundle class loader, |
| // then return true. |
| if (BundleClassLoader.class.isInstance( |
| BundleRevisionImpl.getSecureAction().getClassLoader(clazz))) |
| { |
| return true; |
| } |
| |
| // If the target class was loaded from a class loader that |
| // came from a bundle, then return true. |
| ClassLoader last = null; |
| for (ClassLoader cl = BundleRevisionImpl.getSecureAction().getClassLoader(clazz); |
| (cl != null) && (last != cl); |
| cl = BundleRevisionImpl.getSecureAction().getClassLoader(cl.getClass())) |
| { |
| last = cl; |
| if (BundleClassLoader.class.isInstance(cl)) |
| { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Tries to determine whether the given class is part of the framework or not. |
| * Framework classes include everything in org.apache.felix.framework.* and |
| * org.osgi.framework.*. We also consider ClassLoader and Class to be internal |
| * classes, because they are inserted into the stack trace as a result of |
| * method overloading. Typically, ClassLoader or Class will be mixed in |
| * between framework classes or will be at the point where the class loading |
| * request enters the framework class loading mechanism, which will then be |
| * followed by either bundle or external code, which will then exit our |
| * attempt to determine if we should boot delegate or not. Other standard |
| * class loaders, like URLClassLoader, are considered external classes and |
| * should trigger boot delegation. This means that bundles can create standard |
| * class loaders to get access to boot packages, but this is the standard |
| * behavior of class loaders. |
| * @param clazz the class to determine if it is external or not. |
| * @return <tt>true</tt> if the class is external, otherwise <tt>false</tt>. |
| */ |
| private boolean isClassExternal(Class clazz) |
| { |
| if (clazz.getName().startsWith("org.apache.felix.framework.")) |
| { |
| return false; |
| } |
| else if (clazz.getName().startsWith("org.osgi.framework.")) |
| { |
| return false; |
| } |
| else if (ClassLoader.class.equals(clazz)) |
| { |
| return false; |
| } |
| else if (Class.class.equals(clazz)) |
| { |
| return false; |
| } |
| return true; |
| } |
| |
| synchronized boolean isActivationTriggered() |
| { |
| return m_isActivationTriggered; |
| } |
| |
| static class ToLocalUrlEnumeration implements Enumeration |
| { |
| final Enumeration m_enumeration; |
| |
| ToLocalUrlEnumeration(Enumeration enumeration) |
| { |
| m_enumeration = enumeration; |
| } |
| |
| public boolean hasMoreElements() |
| { |
| return m_enumeration.hasMoreElements(); |
| } |
| |
| public Object nextElement() |
| { |
| return convertToLocalUrl((URL) m_enumeration.nextElement()); |
| } |
| } |
| |
| public class BundleClassLoaderJava5 extends BundleClassLoader |
| { |
| public BundleClassLoaderJava5(ClassLoader parent) |
| { |
| super(parent); |
| } |
| |
| @Override |
| public Enumeration getResources(String name) |
| { |
| Enumeration urls = BundleWiringImpl.this.getResourcesByDelegation(name); |
| if (m_useLocalURLs) |
| { |
| urls = new ToLocalUrlEnumeration(urls); |
| } |
| return urls; |
| } |
| |
| @Override |
| protected Enumeration findResources(String name) |
| { |
| return m_revision.getResourcesLocal(name); |
| } |
| } |
| |
| public class BundleClassLoader extends SecureClassLoader implements BundleReference |
| { |
| private final Map m_jarContentToDexFile; |
| private Object[][] m_cachedLibs = new Object[0][]; |
| private static final int LIBNAME_IDX = 0; |
| private static final int LIBPATH_IDX = 1; |
| |
| public BundleClassLoader(ClassLoader parent) |
| { |
| super(parent); |
| if (m_dexFileClassLoadClass != null) |
| { |
| m_jarContentToDexFile = new HashMap(); |
| } |
| else |
| { |
| m_jarContentToDexFile = null; |
| } |
| } |
| |
| public Bundle getBundle() |
| { |
| return BundleWiringImpl.this.getBundle(); |
| } |
| |
| @Override |
| protected Class loadClass(String name, boolean resolve) |
| throws ClassNotFoundException |
| { |
| Class clazz = null; |
| |
| // Make sure the class was not already loaded. |
| synchronized (this) |
| { |
| clazz = findLoadedClass(name); |
| } |
| |
| if (clazz == null) |
| { |
| try |
| { |
| clazz = (Class) findClassOrResourceByDelegation(name, true); |
| } |
| catch (ResourceNotFoundException ex) |
| { |
| // This should never happen since we are asking for a class, |
| // so just ignore it. |
| } |
| catch (ClassNotFoundException cnfe) |
| { |
| ClassNotFoundException ex = cnfe; |
| String msg = name; |
| if (m_logger.getLogLevel() >= Logger.LOG_DEBUG) |
| { |
| msg = diagnoseClassLoadError(m_resolver, m_revision, name); |
| ex = (msg != null) |
| ? new ClassNotFoundException(msg, cnfe) |
| : ex; |
| } |
| throw ex; |
| } |
| } |
| |
| // Resolve the class and return it. |
| if (resolve) |
| { |
| resolveClass(clazz); |
| } |
| return clazz; |
| } |
| |
| @Override |
| protected Class findClass(String name) throws ClassNotFoundException |
| { |
| Class clazz = null; |
| |
| // Search for class in bundle revision. |
| if (clazz == null) |
| { |
| String actual = name.replace('.', '/') + ".class"; |
| |
| byte[] bytes = null; |
| |
| // Check the bundle class path. |
| List<Content> contentPath = m_revision.getContentPath(); |
| Content content = null; |
| for (int i = 0; |
| (bytes == null) && |
| (i < contentPath.size()); i++) |
| { |
| bytes = contentPath.get(i).getEntryAsBytes(actual); |
| content = contentPath.get(i); |
| } |
| |
| if (bytes != null) |
| { |
| // Get package name. |
| String pkgName = Util.getClassPackage(name); |
| |
| // Get weaving hooks and invoke them to give them a |
| // chance to weave the class' byte code before we |
| // define it. |
| // NOTE: We don't try to dynamically track hook addition |
| // or removal, we just get a snapshot and leave any changes |
| // as a race condition, doing any necessary clean up in |
| // the error handling. |
| Felix felix = ((BundleImpl) m_revision.getBundle()).getFramework(); |
| Set<ServiceReference<WeavingHook>> hooks = |
| felix.getHooks(WeavingHook.class); |
| WovenClassImpl wci = null; |
| if (!hooks.isEmpty()) |
| { |
| // Create woven class to be used for hooks. |
| wci = new WovenClassImpl(name, BundleWiringImpl.this, bytes); |
| // Loop through hooks in service ranking order. |
| for (ServiceReference<WeavingHook> sr : hooks) |
| { |
| // Only use the hook if it is not black listed. |
| if (!felix.isHookBlackListed(sr)) |
| { |
| // Get the hook service object. |
| // Note that we don't use the bundle context |
| // to get the service object since that would |
| // perform sercurity checks. |
| WeavingHook wh = felix.getService(felix, sr); |
| if (wh != null) |
| { |
| try |
| { |
| // TODO: OSGi R4.3 - Need to call all hooks in privileged block. |
| wh.weave(wci); |
| } |
| catch (Throwable th) |
| { |
| if (!(th instanceof WeavingException)) |
| { |
| felix.blackListHook(sr); |
| } |
| felix.fireFrameworkEvent( |
| FrameworkEvent.ERROR, |
| sr.getBundle(), |
| th); |
| |
| // Mark the woven class as incomplete. |
| wci.complete(null, null, null); |
| // Throw class format exception per spec. |
| Error error = new ClassFormatError("Weaving hook failed."); |
| error.initCause(th); |
| throw error; |
| } |
| finally |
| { |
| felix.ungetService(felix, sr); |
| } |
| } |
| } |
| } |
| } |
| |
| // Before we actually attempt to define the class, grab |
| // the lock for this class loader and make sure than no |
| // other thread has defined this class in the meantime. |
| synchronized (this) |
| { |
| byte[] wovenBytes = null; |
| Class wovenClass = null; |
| List<String> wovenImports = null; |
| try |
| { |
| clazz = findLoadedClass(name); |
| if (clazz == null) |
| { |
| // If we have a woven class then get the class bytes from |
| // it since they may have changed. |
| // NOTE: We are taking a snapshot of these values and |
| // are not preventing a malbehaving weaving hook from |
| // modifying them after the fact. The price of preventing |
| // this isn't worth it, since they can already wreck |
| // havoc via weaving anyway. However, we do pass the |
| // snapshot values into the woven class when we mark it |
| // as complete so that it will refect the actual values |
| // we used to define the class. |
| if (wci != null) |
| { |
| bytes = wovenBytes = wci.getBytes(); |
| wovenImports = wci.getDynamicImportsInternal(); |
| |
| // Try to add any woven dynamic imports, since they |
| // could potentially be needed when defining the class. |
| List<BundleRequirement> allWovenReqs = |
| new ArrayList<BundleRequirement>(); |
| for (String s : wovenImports) |
| { |
| try |
| { |
| List<BundleRequirement> wovenReqs = |
| ManifestParser.parseDynamicImportHeader( |
| m_logger, m_revision, s); |
| allWovenReqs.addAll(wovenReqs); |
| } |
| catch (BundleException ex) |
| { |
| // There should be no exception here |
| // since we checked syntax before adding |
| // dynamic import strings to list. |
| } |
| } |
| // Add the dynamic requirements. |
| if (!allWovenReqs.isEmpty()) |
| { |
| // Check for duplicate woven imports. |
| // First grab existing woven imports, if any. |
| Set<String> filters = new HashSet<String>(); |
| if (m_wovenReqs != null) |
| { |
| for (BundleRequirement req : m_wovenReqs) |
| { |
| filters.add( |
| ((BundleRequirementImpl) req) |
| .getFilter().toString()); |
| } |
| } |
| // Then check new woven imports for duplicates |
| // against existing and self. |
| int idx = allWovenReqs.size(); |
| while (idx < allWovenReqs.size()) |
| { |
| BundleRequirement wovenReq = allWovenReqs.get(idx); |
| String filter = ((BundleRequirementImpl) |
| wovenReq).getFilter().toString(); |
| if (!filters.contains(filter)) |
| { |
| filters.add(filter); |
| idx++; |
| } |
| else |
| { |
| allWovenReqs.remove(idx); |
| } |
| } |
| // Merge existing with new imports, if any. |
| if (!allWovenReqs.isEmpty()) |
| { |
| if (m_wovenReqs != null) |
| { |
| allWovenReqs.addAll(0, m_wovenReqs); |
| } |
| m_wovenReqs = allWovenReqs; |
| } |
| } |
| } |
| |
| int activationPolicy = |
| ((BundleImpl) getBundle()).isDeclaredActivationPolicyUsed() |
| ? ((BundleRevisionImpl) getBundle() |
| .adapt(BundleRevision.class)).getDeclaredActivationPolicy() |
| : EAGER_ACTIVATION; |
| |
| // If the revision is using deferred activation, then if |
| // we load this class from this revision we need to activate |
| // the bundle before returning the class. We will short |
| // circuit the trigger matching if the trigger is already |
| // tripped. |
| boolean isTriggerClass = m_isActivationTriggered |
| ? false : m_revision.isActivationTrigger(pkgName); |
| if (!m_isActivationTriggered |
| && isTriggerClass |
| && (activationPolicy == BundleRevisionImpl.LAZY_ACTIVATION) |
| && (getBundle().getState() == Bundle.STARTING)) |
| { |
| List deferredList = (List) m_deferredActivation.get(); |
| if (deferredList == null) |
| { |
| deferredList = new ArrayList(); |
| m_deferredActivation.set(deferredList); |
| } |
| deferredList.add(new Object[] { name, getBundle() }); |
| } |
| // We need to try to define a Package object for the class |
| // before we call defineClass() if we haven't already |
| // created it. |
| if (pkgName.length() > 0) |
| { |
| if (getPackage(pkgName) == null) |
| { |
| Object[] params = definePackage(pkgName); |
| if (params != null) |
| { |
| definePackage( |
| pkgName, |
| (String) params[0], |
| (String) params[1], |
| (String) params[2], |
| (String) params[3], |
| (String) params[4], |
| (String) params[5], |
| null); |
| } |
| else |
| { |
| definePackage(pkgName, null, null, |
| null, null, null, null, null); |
| } |
| } |
| } |
| |
| // If we can load the class from a dex file do so |
| if (content instanceof JarContent) |
| { |
| try |
| { |
| clazz = getDexFileClass((JarContent) content, name, this); |
| } |
| catch (Exception ex) |
| { |
| // Looks like we can't |
| } |
| } |
| |
| if (clazz == null) |
| { |
| // If we have a security context, then use it to |
| // define the class with it for security purposes, |
| // otherwise define the class without a protection domain. |
| if (m_revision.getProtectionDomain() != null) |
| { |
| clazz = defineClass(name, bytes, 0, bytes.length, |
| m_revision.getProtectionDomain()); |
| } |
| else |
| { |
| clazz = defineClass(name, bytes, 0, bytes.length); |
| } |
| |
| wovenClass = clazz; |
| } |
| |
| // At this point if we have a trigger class, then the deferred |
| // activation trigger has tripped. |
| if (!m_isActivationTriggered && isTriggerClass && (clazz != null)) |
| { |
| // TODO: OSGi R4.3 - This isn't protected by the correct lock. |
| m_isActivationTriggered = true; |
| } |
| } |
| } |
| finally |
| { |
| // If we have a woven class, mark it as complete. |
| // Not exactly clear how we should deal with the |
| // case where the weaving didn't happen because |
| // someone else beat us in defining the class. |
| if (wci != null) |
| { |
| wci.complete(wovenClass, wovenBytes, wovenImports); |
| } |
| } |
| } |
| |
| // Perform deferred activation without holding the class loader lock, |
| // if the class we are returning is the instigating class. |
| List deferredList = (List) m_deferredActivation.get(); |
| if ((deferredList != null) |
| && (deferredList.size() > 0) |
| && ((Object[]) deferredList.get(0))[0].equals(name)) |
| { |
| for (int i = deferredList.size() - 1; i >= 0; i--) |
| { |
| try |
| { |
| felix.getFramework().activateBundle( |
| (BundleImpl) ((Object[]) deferredList.get(i))[1], true); |
| } |
| catch (BundleException ex) |
| { |
| ex.printStackTrace(); |
| } |
| } |
| deferredList.clear(); |
| } |
| } |
| } |
| |
| return clazz; |
| } |
| |
| private Object[] definePackage(String pkgName) |
| { |
| String spectitle = (String) m_revision.getHeaders().get("Specification-Title"); |
| String specversion = (String) m_revision.getHeaders().get("Specification-Version"); |
| String specvendor = (String) m_revision.getHeaders().get("Specification-Vendor"); |
| String impltitle = (String) m_revision.getHeaders().get("Implementation-Title"); |
| String implversion = (String) m_revision.getHeaders().get("Implementation-Version"); |
| String implvendor = (String) m_revision.getHeaders().get("Implementation-Vendor"); |
| if ((spectitle != null) |
| || (specversion != null) |
| || (specvendor != null) |
| || (impltitle != null) |
| || (implversion != null) |
| || (implvendor != null)) |
| { |
| return new Object[] { |
| spectitle, specversion, specvendor, impltitle, implversion, implvendor |
| }; |
| } |
| return null; |
| } |
| |
| private Class getDexFileClass(JarContent content, String name, ClassLoader loader) |
| throws Exception |
| { |
| if (m_jarContentToDexFile == null) |
| { |
| return null; |
| } |
| |
| Object dexFile = null; |
| |
| if (!m_jarContentToDexFile.containsKey(content)) |
| { |
| try |
| { |
| if (m_dexFileClassLoadDex != null) |
| { |
| dexFile = m_dexFileClassLoadDex.invoke(null, |
| new Object[]{content.getFile().getAbsolutePath(), |
| content.getFile().getAbsolutePath() + ".dex", new Integer(0)}); |
| } |
| else |
| { |
| dexFile = m_dexFileClassConstructor.newInstance( |
| new Object[] { content.getFile() }); |
| } |
| } |
| finally |
| { |
| m_jarContentToDexFile.put(content, dexFile); |
| } |
| } |
| else |
| { |
| dexFile = m_jarContentToDexFile.get(content); |
| } |
| |
| if (dexFile != null) |
| { |
| return (Class) m_dexFileClassLoadClass.invoke(dexFile, |
| new Object[] { name.replace('.','/'), loader }); |
| } |
| return null; |
| } |
| |
| @Override |
| public URL getResource(String name) |
| { |
| URL url = BundleWiringImpl.this.getResourceByDelegation(name); |
| if (m_useLocalURLs) |
| { |
| url = convertToLocalUrl(url); |
| } |
| return url; |
| } |
| |
| @Override |
| protected URL findResource(String name) |
| { |
| return m_revision.getResourceLocal(name); |
| } |
| |
| // The findResources() method should only look at the revision itself, but |
| // instead it tries to delegate because in Java version prior to 1.5 the |
| // getResources() method was final and could not be overridden. We should |
| // override getResources() like getResource() to make it delegate, but we |
| // can't. As a workaround, we make findResources() delegate instead. |
| @Override |
| protected Enumeration findResources(String name) |
| { |
| Enumeration urls = BundleWiringImpl.this.getResourcesByDelegation(name); |
| if (m_useLocalURLs) |
| { |
| urls = new ToLocalUrlEnumeration(urls); |
| } |
| return urls; |
| } |
| |
| @Override |
| protected String findLibrary(String name) |
| { |
| // Remove leading slash, if present. |
| if (name.startsWith("/")) |
| { |
| name = name.substring(1); |
| } |
| |
| String result = null; |
| // CONCURRENCY: In the long run, we might want to break this |
| // sync block in two to avoid manipulating the cache while |
| // holding the lock, but for now we will do it the simple way. |
| synchronized (this) |
| { |
| // Check to make sure we haven't already found this library. |
| for (int i = 0; (result == null) && (i < m_cachedLibs.length); i++) |
| { |
| if (m_cachedLibs[i][LIBNAME_IDX].equals(name)) |
| { |
| result = (String) m_cachedLibs[i][LIBPATH_IDX]; |
| } |
| } |
| |
| // If we don't have a cached result, see if we have a matching |
| // native library. |
| if (result == null) |
| { |
| List<R4Library> libs = getNativeLibraries(); |
| for (int libIdx = 0; (libs != null) && (libIdx < libs.size()); libIdx++) |
| { |
| if (libs.get(libIdx).match(m_configMap, name)) |
| { |
| // Search bundle content first for native library. |
| result = m_revision.getContent().getEntryAsNativeLibrary( |
| libs.get(libIdx).getEntryName()); |
| // If not found, then search fragments in order. |
| for (int i = 0; |
| (result == null) && (m_fragmentContents != null) |
| && (i < m_fragmentContents.size()); |
| i++) |
| { |
| result = m_fragmentContents.get(i).getEntryAsNativeLibrary( |
| libs.get(libIdx).getEntryName()); |
| } |
| } |
| } |
| |
| // Remember the result for future requests. |
| if (result != null) |
| { |
| Object[][] tmp = new Object[m_cachedLibs.length + 1][]; |
| System.arraycopy(m_cachedLibs, 0, tmp, 0, m_cachedLibs.length); |
| tmp[m_cachedLibs.length] = new Object[] { name, result }; |
| m_cachedLibs = tmp; |
| } |
| } |
| } |
| |
| return result; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return BundleWiringImpl.this.toString(); |
| } |
| } |
| |
| static URL convertToLocalUrl(URL url) |
| { |
| if (url.getProtocol().equals("bundle")) |
| { |
| try |
| { |
| url = ((URLHandlersBundleURLConnection) |
| url.openConnection()).getLocalURL(); |
| } |
| catch (IOException ex) |
| { |
| // Ignore and add original url. |
| } |
| } |
| return url; |
| } |
| |
| private static String diagnoseClassLoadError( |
| StatefulResolver resolver, BundleRevision revision, String name) |
| { |
| // We will try to do some diagnostics here to help the developer |
| // deal with this exception. |
| |
| // Get package name. |
| String pkgName = Util.getClassPackage(name); |
| if (pkgName.length() == 0) |
| { |
| return null; |
| } |
| |
| // First, get the bundle string of the revision doing the class loader. |
| String importer = revision.getBundle().toString(); |
| |
| // Next, check to see if the revision imports the package. |
| List<BundleWire> wires = (revision.getWiring() == null) |
| ? null : revision.getWiring().getProvidedWires(null); |
| for (int i = 0; (wires != null) && (i < wires.size()); i++) |
| { |
| if (wires.get(i).getCapability().getNamespace().equals(BundleRevision.PACKAGE_NAMESPACE) && |
| wires.get(i).getCapability().getAttributes().get(BundleRevision.PACKAGE_NAMESPACE).equals(pkgName)) |
| { |
| String exporter = wires.get(i).getProviderWiring().getBundle().toString(); |
| |
| StringBuffer sb = new StringBuffer("*** Package '"); |
| sb.append(pkgName); |
| sb.append("' is imported by bundle "); |
| sb.append(importer); |
| sb.append(" from bundle "); |
| sb.append(exporter); |
| sb.append(", but the exported package from bundle "); |
| sb.append(exporter); |
| sb.append(" does not contain the requested class '"); |
| sb.append(name); |
| sb.append("'. Please verify that the class name is correct in the importing bundle "); |
| sb.append(importer); |
| sb.append(" and/or that the exported package is correctly bundled in "); |
| sb.append(exporter); |
| sb.append(". ***"); |
| |
| return sb.toString(); |
| } |
| } |
| |
| // Next, check to see if the package was optionally imported and |
| // whether or not there is an exporter available. |
| List<BundleRequirement> reqs = revision.getWiring().getRequirements(null); |
| /* |
| * TODO: RB - Fix diagnostic message for optional imports. |
| for (int i = 0; (reqs != null) && (i < reqs.length); i++) |
| { |
| if (reqs[i].getName().equals(pkgName) && reqs[i].isOptional()) |
| { |
| // Try to see if there is an exporter available. |
| IModule[] exporters = getResolvedExporters(reqs[i], true); |
| exporters = (exporters.length == 0) |
| ? getUnresolvedExporters(reqs[i], true) : exporters; |
| |
| // An exporter might be available, but it may have attributes |
| // that do not match the importer's required attributes, so |
| // check that case by simply looking for an exporter of the |
| // desired package without any attributes. |
| if (exporters.length == 0) |
| { |
| IRequirement pkgReq = new Requirement( |
| ICapability.PACKAGE_NAMESPACE, "(package=" + pkgName + ")"); |
| exporters = getResolvedExporters(pkgReq, true); |
| exporters = (exporters.length == 0) |
| ? getUnresolvedExporters(pkgReq, true) : exporters; |
| } |
| |
| long expId = (exporters.length == 0) |
| ? -1 : Util.getBundleIdFromModuleId(exporters[0].getId()); |
| |
| StringBuffer sb = new StringBuffer("*** Class '"); |
| sb.append(name); |
| sb.append("' was not found, but this is likely normal since package '"); |
| sb.append(pkgName); |
| sb.append("' is optionally imported by bundle "); |
| sb.append(impId); |
| sb.append("."); |
| if (exporters.length > 0) |
| { |
| sb.append(" However, bundle "); |
| sb.append(expId); |
| if (reqs[i].isSatisfied( |
| Util.getExportPackage(exporters[0], reqs[i].getName()))) |
| { |
| sb.append(" does export this package. Bundle "); |
| sb.append(expId); |
| sb.append(" must be installed before bundle "); |
| sb.append(impId); |
| sb.append(" is resolved or else the optional import will be ignored."); |
| } |
| else |
| { |
| sb.append(" does export this package with attributes that do not match."); |
| } |
| } |
| sb.append(" ***"); |
| |
| return sb.toString(); |
| } |
| } |
| */ |
| // Next, check to see if the package is dynamically imported by the revision. |
| if (resolver.isAllowedDynamicImport(revision, pkgName)) |
| { |
| // Try to see if there is an exporter available. |
| Map<String, String> dirs = Collections.EMPTY_MAP; |
| Map<String, Object> attrs = new HashMap<String, Object>(1); |
| attrs.put(BundleRevision.PACKAGE_NAMESPACE, pkgName); |
| BundleRequirementImpl req = new BundleRequirementImpl( |
| revision, BundleRevision.PACKAGE_NAMESPACE, dirs, attrs); |
| Set<BundleCapability> exporters = resolver.getCandidates(req, false); |
| |
| BundleRevision provider = null; |
| try |
| { |
| provider = resolver.resolve(revision, pkgName); |
| } |
| catch (Exception ex) |
| { |
| provider = null; |
| } |
| |
| String exporter = (exporters.isEmpty()) |
| ? null : exporters.iterator().next().getRevision().getBundle().toString(); |
| |
| StringBuffer sb = new StringBuffer("*** Class '"); |
| sb.append(name); |
| sb.append("' was not found, but this is likely normal since package '"); |
| sb.append(pkgName); |
| sb.append("' is dynamically imported by bundle "); |
| sb.append(importer); |
| sb.append("."); |
| if ((exporters.size() > 0) && (provider == null)) |
| { |
| sb.append(" However, bundle "); |
| sb.append(exporter); |
| sb.append(" does export this package with attributes that do not match."); |
| } |
| sb.append(" ***"); |
| |
| return sb.toString(); |
| } |
| |
| // Next, check to see if there are any exporters for the package at all. |
| Map<String, String> dirs = Collections.EMPTY_MAP; |
| Map<String, Object> attrs = new HashMap<String, Object>(1); |
| attrs.put(BundleRevision.PACKAGE_NAMESPACE, pkgName); |
| BundleRequirementImpl req = new BundleRequirementImpl( |
| revision, BundleRevision.PACKAGE_NAMESPACE, dirs, attrs); |
| Set<BundleCapability> exports = resolver.getCandidates(req, false); |
| if (exports.size() > 0) |
| { |
| boolean classpath = false; |
| try |
| { |
| BundleRevisionImpl.getSecureAction() |
| .getClassLoader(BundleClassLoader.class).loadClass(name); |
| classpath = true; |
| } |
| catch (NoClassDefFoundError err) |
| { |
| // Ignore |
| } |
| catch (Exception ex) |
| { |
| // Ignore |
| } |
| |
| String exporter = exports.iterator().next().getRevision().getBundle().toString(); |
| |
| StringBuffer sb = new StringBuffer("*** Class '"); |
| sb.append(name); |
| sb.append("' was not found because bundle "); |
| sb.append(importer); |
| sb.append(" does not import '"); |
| sb.append(pkgName); |
| sb.append("' even though bundle "); |
| sb.append(exporter); |
| sb.append(" does export it."); |
| if (classpath) |
| { |
| sb.append(" Additionally, the class is also available from the system class loader. There are two fixes: 1) Add an import for '"); |
| sb.append(pkgName); |
| sb.append("' to bundle "); |
| sb.append(importer); |
| sb.append("; imports are necessary for each class directly touched by bundle code or indirectly touched, such as super classes if their methods are used. "); |
| sb.append("2) Add package '"); |
| sb.append(pkgName); |
| sb.append("' to the '"); |
| sb.append(Constants.FRAMEWORK_BOOTDELEGATION); |
| sb.append("' property; a library or VM bug can cause classes to be loaded by the wrong class loader. The first approach is preferable for preserving modularity."); |
| } |
| else |
| { |
| sb.append(" To resolve this issue, add an import for '"); |
| sb.append(pkgName); |
| sb.append("' to bundle "); |
| sb.append(importer); |
| sb.append("."); |
| } |
| sb.append(" ***"); |
| |
| return sb.toString(); |
| } |
| |
| // Next, try to see if the class is available from the system |
| // class loader. |
| try |
| { |
| BundleRevisionImpl.getSecureAction() |
| .getClassLoader(BundleClassLoader.class).loadClass(name); |
| |
| StringBuffer sb = new StringBuffer("*** Package '"); |
| sb.append(pkgName); |
| sb.append("' is not imported by bundle "); |
| sb.append(importer); |
| sb.append(", nor is there any bundle that exports package '"); |
| sb.append(pkgName); |
| sb.append("'. However, the class '"); |
| sb.append(name); |
| sb.append("' is available from the system class loader. There are two fixes: 1) Add package '"); |
| sb.append(pkgName); |
| sb.append("' to the '"); |
| sb.append(Constants.FRAMEWORK_SYSTEMPACKAGES_EXTRA); |
| sb.append("' property and modify bundle "); |
| sb.append(importer); |
| sb.append(" to import this package; this causes the system bundle to export class path packages. 2) Add package '"); |
| sb.append(pkgName); |
| sb.append("' to the '"); |
| sb.append(Constants.FRAMEWORK_BOOTDELEGATION); |
| sb.append("' property; a library or VM bug can cause classes to be loaded by the wrong class loader. The first approach is preferable for preserving modularity."); |
| sb.append(" ***"); |
| |
| return sb.toString(); |
| } |
| catch (Exception ex2) |
| { |
| } |
| |
| // Finally, if there are no imports or exports for the package |
| // and it is not available on the system class path, simply |
| // log a message saying so. |
| StringBuffer sb = new StringBuffer("*** Class '"); |
| sb.append(name); |
| sb.append("' was not found. Bundle "); |
| sb.append(importer); |
| sb.append(" does not import package '"); |
| sb.append(pkgName); |
| sb.append("', nor is the package exported by any other bundle or available from the system class loader."); |
| sb.append(" ***"); |
| |
| return sb.toString(); |
| } |
| } |