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/*******************************************************************************
* Copyright (c) 2005, 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.core.runtime.internal.adaptor;
import java.io.File;
import java.security.ProtectionDomain;
import java.util.ArrayList;
import java.util.List;
import java.util.jar.Attributes;
import java.util.jar.Manifest;
import org.eclipse.osgi.baseadaptor.*;
import org.eclipse.osgi.baseadaptor.bundlefile.BundleEntry;
import org.eclipse.osgi.baseadaptor.bundlefile.BundleFile;
import org.eclipse.osgi.baseadaptor.hooks.ClassLoadingHook;
import org.eclipse.osgi.baseadaptor.loader.*;
import org.eclipse.osgi.framework.adaptor.BundleProtectionDomain;
import org.eclipse.osgi.framework.adaptor.ClassLoaderDelegate;
import org.eclipse.osgi.framework.internal.core.FrameworkProperties;
import org.eclipse.osgi.internal.baseadaptor.BaseClassLoadingHook;
import org.eclipse.osgi.internal.baseadaptor.BaseStorageHook;
public class EclipseClassLoadingHook implements ClassLoadingHook, HookConfigurator {
private static String[] NL_JAR_VARIANTS = buildNLJarVariants(EclipseEnvironmentInfo.getDefault().getNL());
private static boolean DEFINE_PACKAGES;
private final static boolean DEFINE_PACKAGE_ATTRIBUTES = !"noattributes".equals(FrameworkProperties.getProperty("osgi.classloader.define.packages")); //$NON-NLS-1$ //$NON-NLS-2$
private static String[] LIB_VARIANTS = buildLibraryVariants();
private Object pkgLock = new Object();
static {
try {
Class.forName("java.lang.Package"); //$NON-NLS-1$
DEFINE_PACKAGES = true;
} catch (ClassNotFoundException e) {
DEFINE_PACKAGES = false;
}
}
private static String[] buildLibraryVariants() {
List<String> result = new ArrayList<String>();
EclipseEnvironmentInfo info = EclipseEnvironmentInfo.getDefault();
result.add("ws/" + info.getWS() + "/"); //$NON-NLS-1$ //$NON-NLS-2$
result.add("os/" + info.getOS() + "/" + info.getOSArch() + "/"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
result.add("os/" + info.getOS() + "/"); //$NON-NLS-1$ //$NON-NLS-2$
String nl = info.getNL();
nl = nl.replace('_', '/');
while (nl.length() > 0) {
result.add("nl/" + nl + "/"); //$NON-NLS-1$ //$NON-NLS-2$
int i = nl.lastIndexOf('/');
nl = (i < 0) ? "" : nl.substring(0, i); //$NON-NLS-1$
}
result.add(""); //$NON-NLS-1$
return result.toArray(new String[result.size()]);
}
public byte[] processClass(String name, byte[] classbytes, ClasspathEntry classpathEntry, BundleEntry entry, ClasspathManager manager) {
if (!DEFINE_PACKAGES)
return null;
// Define the package if it is not the default package.
int lastIndex = name.lastIndexOf('.');
if (lastIndex < 0)
return null;
String packageName = name.substring(0, lastIndex);
Object pkg;
synchronized (pkgLock) {
pkg = manager.getBaseClassLoader().publicGetPackage(packageName);
if (pkg != null)
return null;
}
// get info about the package from the classpath entry's manifest.
String specTitle = null, specVersion = null, specVendor = null, implTitle = null, implVersion = null, implVendor = null;
if (DEFINE_PACKAGE_ATTRIBUTES) {
ClasspathManifest cpm = (ClasspathManifest) classpathEntry.getUserObject(ClasspathManifest.KEY);
if (cpm == null) {
cpm = new ClasspathManifest();
classpathEntry.addUserObject(cpm);
}
Manifest mf = cpm.getManifest(classpathEntry, manager);
if (mf != null) {
Attributes mainAttributes = mf.getMainAttributes();
String dirName = packageName.replace('.', '/') + '/';
Attributes packageAttributes = mf.getAttributes(dirName);
boolean noEntry = false;
if (packageAttributes == null) {
noEntry = true;
packageAttributes = mainAttributes;
}
specTitle = packageAttributes.getValue(Attributes.Name.SPECIFICATION_TITLE);
if (specTitle == null && !noEntry)
specTitle = mainAttributes.getValue(Attributes.Name.SPECIFICATION_TITLE);
specVersion = packageAttributes.getValue(Attributes.Name.SPECIFICATION_VERSION);
if (specVersion == null && !noEntry)
specVersion = mainAttributes.getValue(Attributes.Name.SPECIFICATION_VERSION);
specVendor = packageAttributes.getValue(Attributes.Name.SPECIFICATION_VENDOR);
if (specVendor == null && !noEntry)
specVendor = mainAttributes.getValue(Attributes.Name.SPECIFICATION_VENDOR);
implTitle = packageAttributes.getValue(Attributes.Name.IMPLEMENTATION_TITLE);
if (implTitle == null && !noEntry)
implTitle = mainAttributes.getValue(Attributes.Name.IMPLEMENTATION_TITLE);
implVersion = packageAttributes.getValue(Attributes.Name.IMPLEMENTATION_VERSION);
if (implVersion == null && !noEntry)
implVersion = mainAttributes.getValue(Attributes.Name.IMPLEMENTATION_VERSION);
implVendor = packageAttributes.getValue(Attributes.Name.IMPLEMENTATION_VENDOR);
if (implVendor == null && !noEntry)
implVendor = mainAttributes.getValue(Attributes.Name.IMPLEMENTATION_VENDOR);
}
}
// The package is not defined yet define it before we define the class.
// TODO still need to seal packages.
synchronized (pkgLock) {
pkg = manager.getBaseClassLoader().publicGetPackage(packageName);
if (pkg != null)
return null;
manager.getBaseClassLoader().publicDefinePackage(packageName, specTitle, specVersion, specVendor, implTitle, implVersion, implVendor, null);
}
// not doing any byte processing
return null;
}
public boolean addClassPathEntry(ArrayList<ClasspathEntry> cpEntries, String cp, ClasspathManager hostmanager, BaseData sourcedata, ProtectionDomain sourcedomain) {
String var = hasPrefix(cp);
if (var != null)
// find internal library using eclipse predefined vars
return addInternalClassPath(var, cpEntries, cp, hostmanager, sourcedata, sourcedomain);
if (cp.startsWith(BaseStorageHook.EXTERNAL_LIB_PREFIX)) {
cp = cp.substring(BaseStorageHook.EXTERNAL_LIB_PREFIX.length());
// find external library using system property substitution
ClasspathEntry cpEntry = hostmanager.getExternalClassPath(BaseStorageHook.substituteVars(cp), sourcedata, sourcedomain);
if (cpEntry != null) {
cpEntries.add(cpEntry);
return true;
}
}
return false;
}
private boolean addInternalClassPath(String var, ArrayList<ClasspathEntry> cpEntries, String cp, ClasspathManager hostloader, BaseData sourcedata, ProtectionDomain sourcedomain) {
if (var.equals("ws")) //$NON-NLS-1$
return ClasspathManager.addClassPathEntry(cpEntries, "ws/" + EclipseEnvironmentInfo.getDefault().getWS() + cp.substring(4), hostloader, sourcedata, sourcedomain); //$NON-NLS-1$
if (var.equals("os")) //$NON-NLS-1$
return ClasspathManager.addClassPathEntry(cpEntries, "os/" + EclipseEnvironmentInfo.getDefault().getOS() + cp.substring(4), hostloader, sourcedata, sourcedomain); //$NON-NLS-1$
if (var.equals("nl")) { //$NON-NLS-1$
cp = cp.substring(4);
for (int i = 0; i < NL_JAR_VARIANTS.length; i++)
if (ClasspathManager.addClassPathEntry(cpEntries, "nl/" + NL_JAR_VARIANTS[i] + cp, hostloader, sourcedata, sourcedomain)) //$NON-NLS-1$
return true;
}
return false;
}
//return a String representing the string found between the $s
private static String hasPrefix(String libPath) {
if (libPath.startsWith("$ws$")) //$NON-NLS-1$
return "ws"; //$NON-NLS-1$
if (libPath.startsWith("$os$")) //$NON-NLS-1$
return "os"; //$NON-NLS-1$
if (libPath.startsWith("$nl$")) //$NON-NLS-1$
return "nl"; //$NON-NLS-1$
return null;
}
private static String[] buildNLJarVariants(String nl) {
List<String> result = new ArrayList<String>();
nl = nl.replace('_', '/');
while (nl.length() > 0) {
result.add("nl/" + nl + "/"); //$NON-NLS-1$ //$NON-NLS-2$
int i = nl.lastIndexOf('/');
nl = (i < 0) ? "" : nl.substring(0, i); //$NON-NLS-1$
}
result.add(""); //$NON-NLS-1$
return result.toArray(new String[result.size()]);
}
public void recordClassDefine(String name, Class<?> clazz, byte[] classbytes, ClasspathEntry classpathEntry, BundleEntry entry, ClasspathManager manager) {
// do nothing
}
public String findLibrary(BaseData data, String libName) {
if (libName.length() == 0)
return null;
if (libName.charAt(0) == '/' || libName.charAt(0) == '\\')
libName = libName.substring(1);
String mappedLibName = System.mapLibraryName(libName);
String result = searchVariants(data, mappedLibName);
if (result != null)
return result;
String[] mappedLibNames = BaseClassLoadingHook.mapLibraryNames(mappedLibName);
for (int i = 0; i < mappedLibNames.length && result == null; i++)
result = searchVariants(data, mappedLibNames[i]);
return result;
}
private String searchVariants(BaseData bundledata, String path) {
for (int i = 0; i < LIB_VARIANTS.length; i++) {
BundleFile baseBundleFile = bundledata.getBundleFile();
BundleEntry libEntry = baseBundleFile.getEntry(LIB_VARIANTS[i] + path);
if (libEntry != null) {
File libFile = baseBundleFile.getFile(LIB_VARIANTS[i] + path, true);
if (libFile == null)
return null;
// see bug 88697 - HP requires libraries to have executable permissions
if (org.eclipse.osgi.service.environment.Constants.OS_HPUX.equals(EclipseEnvironmentInfo.getDefault().getOS())) {
try {
// use the string array method in case there is a space in the path
Runtime.getRuntime().exec(new String[] {"chmod", "755", libFile.getAbsolutePath()}).waitFor(); //$NON-NLS-1$ //$NON-NLS-2$
} catch (Exception e) {
e.printStackTrace();
}
}
return libFile.getAbsolutePath();
}
}
return null;
}
public ClassLoader getBundleClassLoaderParent() {
return null; // do nothing
}
public void addHooks(HookRegistry hookRegistry) {
hookRegistry.addClassLoadingHook(this);
}
public BaseClassLoader createClassLoader(ClassLoader parent, ClassLoaderDelegate delegate, BundleProtectionDomain domain, BaseData data, String[] bundleclasspath) {
// do nothing
return null;
}
public void initializedClassLoader(BaseClassLoader baseClassLoader, BaseData data) {
// do nothing
}
}
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