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JNI binding generator (runtime)
/**
* Copyright 2011 JogAmp Community. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are
* permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation are those of the
* authors and should not be interpreted as representing official policies, either expressed
* or implied, of JogAmp Community.
*/
package com.jogamp.common.util.cache;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.security.cert.Certificate;
import java.util.HashMap;
import java.util.Map;
import java.util.jar.JarFile;
import jogamp.common.Debug;
import com.jogamp.common.os.NativeLibrary;
import com.jogamp.common.util.IOUtil;
import com.jogamp.common.util.JarUtil;
import com.jogamp.common.util.SecurityUtil;
public class TempJarCache {
private static final boolean DEBUG = Debug.debug("TempJarCache");
// A HashMap of native libraries that can be loaded with System.load()
// The key is the string name of the library as passed into the loadLibrary
// call; it is the file name without the directory or the platform-dependent
// library prefix and suffix. The value is the absolute path name to the
// unpacked library file in nativeTmpDir.
private static Map nativeLibMap;
public enum LoadState {
LOOKED_UP, LOADED;
public boolean compliesWith(final LoadState o2) {
return null != o2 ? compareTo(o2) >= 0 : false;
}
}
private static boolean testLoadState(final LoadState has, final LoadState exp) {
if(null == has) {
return null == exp;
}
return has.compliesWith(exp);
}
// Set of jar files added
private static Map nativeLibJars;
private static Map classFileJars;
private static Map resourceFileJars;
private static TempFileCache tmpFileCache;
private static volatile boolean staticInitError = false;
private static volatile boolean isInit = false;
/**
* Documented way to kick off static initialization.
*
* @return true is static initialization was successful
*/
public static boolean initSingleton() {
if (!isInit) { // volatile: ok
synchronized (TempJarCache.class) {
if (!isInit) {
staticInitError = !TempFileCache.initSingleton();
if(!staticInitError) {
tmpFileCache = new TempFileCache();
staticInitError = !tmpFileCache.isValid();
}
if(!staticInitError) {
// Initialize the collections of resources
nativeLibMap = new HashMap();
nativeLibJars = new HashMap();
classFileJars = new HashMap();
resourceFileJars = new HashMap();
}
if(DEBUG) {
System.err.println("TempJarCache.initSingleton(): ok "+(false==staticInitError)+", "+ tmpFileCache.getTempDir());
}
isInit = true;
}
}
}
return !staticInitError;
}
/**
* This is not recommended since the JNI libraries may still be
* in use by the ClassLoader they are loaded via {@link System#load(String)}.
*
*
* In JogAmp, JNI native libraries loaded and registered by {@link JNILibLoaderBase}
* derivations, where the native JARs might be loaded via {@link JNILibLoaderBase#addNativeJarLibs(Class, String) }.
*
*
* The only valid use case to shutdown the TempJarCache is at bootstrapping,
* i.e. when no native library is guaranteed to be loaded. This could be useful
* if bootstrapping needs to find the proper native library type.
*
*
public static void shutdown() {
if (isInit) { // volatile: ok
synchronized (TempJarCache.class) {
if (isInit) {
if(DEBUG) {
System.err.println("TempJarCache.shutdown(): real "+(false==staticInitError)+", "+ tmpFileCache.getTempDir());
}
isInit = false;
if(!staticInitError) {
nativeLibMap.clear();
nativeLibMap = null;
nativeLibJars.clear();
nativeLibJars = null;
classFileJars.clear();
classFileJars = null;
resourceFileJars.clear();
resourceFileJars = null;
tmpFileCache.destroy();
tmpFileCache = null;
}
}
}
}
} */
private static boolean isInitializedImpl() {
if (!isInit) { // volatile: ok
synchronized (TempJarCache.class) {
if (!isInit) {
return false;
}
}
}
return true;
}
/**
* @return true if this class has been properly initialized, ie. is in use, otherwise false.
*/
public static boolean isInitialized() {
return isInitializedImpl() && !staticInitError;
}
/* package */ static void checkInitialized() {
if(!isInitializedImpl()) {
throw new RuntimeException("initSingleton() has to be called first.");
}
if(staticInitError) {
throw new RuntimeException("initSingleton() failed.");
}
}
public static TempFileCache getTempFileCache() {
checkInitialized();
return tmpFileCache;
}
public synchronized static boolean checkNativeLibs(final URI jarURI, final LoadState exp) throws IOException {
checkInitialized();
if(null == jarURI) {
throw new IllegalArgumentException("jarURI is null");
}
return testLoadState(nativeLibJars.get(jarURI), exp);
}
public synchronized static boolean checkClasses(final URI jarURI, final LoadState exp) throws IOException {
checkInitialized();
if(null == jarURI) {
throw new IllegalArgumentException("jarURI is null");
}
return testLoadState(classFileJars.get(jarURI), exp);
}
public synchronized static boolean checkResources(final URI jarURI, final LoadState exp) throws IOException {
checkInitialized();
if(null == jarURI) {
throw new IllegalArgumentException("jarURI is null");
}
return testLoadState(resourceFileJars.get(jarURI), exp);
}
/**
* Adds native libraries, if not yet added.
*
* @param certClass if class is certified, the JarFile entries needs to have the same certificate
* @param jarURI
* @param nativeLibraryPath if not null, only extracts native libraries within this path.
* @return true if native libraries were added or previously loaded from given jarURI, otherwise false
* @throws IOException if the jarURI could not be loaded or a previous load attempt failed
* @throws SecurityException
* @throws URISyntaxException
* @throws IllegalArgumentException
*/
public synchronized static final boolean addNativeLibs(final Class certClass, final URI jarURI, final String nativeLibraryPath) throws IOException, SecurityException, IllegalArgumentException, URISyntaxException {
checkInitialized();
final LoadState nativeLibJarsLS = nativeLibJars.get(jarURI);
if( !testLoadState(nativeLibJarsLS, LoadState.LOOKED_UP) ) {
nativeLibJars.put(jarURI, LoadState.LOOKED_UP);
final JarFile jarFile = JarUtil.getJarFile(jarURI);
if(DEBUG) {
System.err.println("TempJarCache: addNativeLibs: "+jarURI+": nativeJar "+jarFile.getName()+" (NEW)");
}
validateCertificates(certClass, jarFile);
final int num = JarUtil.extract(tmpFileCache.getTempDir(), nativeLibMap, jarFile, nativeLibraryPath, true, false, false);
nativeLibJars.put(jarURI, LoadState.LOADED);
return num > 0;
} else if( testLoadState(nativeLibJarsLS, LoadState.LOADED) ) {
if(DEBUG) {
System.err.println("TempJarCache: addNativeLibs: "+jarURI+": nativeJar "+jarURI+" (REUSE)");
}
return true;
}
throw new IOException("TempJarCache: addNativeLibs: "+jarURI+", previous load attempt failed");
}
/**
* Adds native classes, if not yet added.
*
* TODO class access pending
* needs Classloader.defineClass(..) access, ie. own derivation - will do when needed ..
*
* @param certClass if class is certified, the JarFile entries needs to have the same certificate
* @param jarURI
* @throws IOException if the jarURI could not be loaded or a previous load attempt failed
* @throws SecurityException
* @throws URISyntaxException
* @throws IllegalArgumentException
*/
public synchronized static final void addClasses(final Class certClass, final URI jarURI) throws IOException, SecurityException, IllegalArgumentException, URISyntaxException {
checkInitialized();
final LoadState classFileJarsLS = classFileJars.get(jarURI);
if( !testLoadState(classFileJarsLS, LoadState.LOOKED_UP) ) {
classFileJars.put(jarURI, LoadState.LOOKED_UP);
final JarFile jarFile = JarUtil.getJarFile(jarURI);
if(DEBUG) {
System.err.println("TempJarCache: addClasses: "+jarURI+": nativeJar "+jarFile.getName());
}
validateCertificates(certClass, jarFile);
JarUtil.extract(tmpFileCache.getTempDir(), null, jarFile,
null /* nativeLibraryPath */, false, true, false);
classFileJars.put(jarURI, LoadState.LOADED);
} else if( !testLoadState(classFileJarsLS, LoadState.LOADED) ) {
throw new IOException("TempJarCache: addClasses: "+jarURI+", previous load attempt failed");
}
}
/**
* Adds native resources, if not yet added.
*
* @param certClass if class is certified, the JarFile entries needs to have the same certificate
* @param jarURI
* @return
* @throws IOException if the jarURI could not be loaded or a previous load attempt failed
* @throws SecurityException
* @throws URISyntaxException
* @throws IllegalArgumentException
*/
public synchronized static final void addResources(final Class certClass, final URI jarURI) throws IOException, SecurityException, IllegalArgumentException, URISyntaxException {
checkInitialized();
final LoadState resourceFileJarsLS = resourceFileJars.get(jarURI);
if( !testLoadState(resourceFileJarsLS, LoadState.LOOKED_UP) ) {
resourceFileJars.put(jarURI, LoadState.LOOKED_UP);
final JarFile jarFile = JarUtil.getJarFile(jarURI);
if(DEBUG) {
System.err.println("TempJarCache: addResources: "+jarURI+": nativeJar "+jarFile.getName());
}
validateCertificates(certClass, jarFile);
JarUtil.extract(tmpFileCache.getTempDir(), null, jarFile,
null /* nativeLibraryPath */, false, false, true);
resourceFileJars.put(jarURI, LoadState.LOADED);
} else if( !testLoadState(resourceFileJarsLS, LoadState.LOADED) ) {
throw new IOException("TempJarCache: addResources: "+jarURI+", previous load attempt failed");
}
}
/**
* Adds all types, native libraries, class files and other files (resources)
* if not yet added.
*
* TODO class access pending
* needs Classloader.defineClass(..) access, ie. own derivation - will do when needed ..
*
* @param certClass if class is certified, the JarFile entries needs to have the same certificate
* @param jarURI
* @throws IOException if the jarURI could not be loaded or a previous load attempt failed
* @throws SecurityException
* @throws URISyntaxException
* @throws IllegalArgumentException
*/
public synchronized static final void addAll(final Class certClass, final URI jarURI) throws IOException, SecurityException, IllegalArgumentException, URISyntaxException {
checkInitialized();
if(null == jarURI) {
throw new IllegalArgumentException("jarURI is null");
}
final LoadState nativeLibJarsLS = nativeLibJars.get(jarURI);
final LoadState classFileJarsLS = classFileJars.get(jarURI);
final LoadState resourceFileJarsLS = resourceFileJars.get(jarURI);
if( !testLoadState(nativeLibJarsLS, LoadState.LOOKED_UP) ||
!testLoadState(classFileJarsLS, LoadState.LOOKED_UP) ||
!testLoadState(resourceFileJarsLS, LoadState.LOOKED_UP) ) {
final boolean extractNativeLibraries = !testLoadState(nativeLibJarsLS, LoadState.LOADED);
final boolean extractClassFiles = !testLoadState(classFileJarsLS, LoadState.LOADED);
final boolean extractOtherFiles = !testLoadState(resourceFileJarsLS, LoadState.LOOKED_UP);
// mark looked-up (those who are not loaded)
if(extractNativeLibraries) {
nativeLibJars.put(jarURI, LoadState.LOOKED_UP);
}
if(extractClassFiles) {
classFileJars.put(jarURI, LoadState.LOOKED_UP);
}
if(extractOtherFiles) {
resourceFileJars.put(jarURI, LoadState.LOOKED_UP);
}
final JarFile jarFile = JarUtil.getJarFile(jarURI);
if(DEBUG) {
System.err.println("TempJarCache: addAll: "+jarURI+": nativeJar "+jarFile.getName());
}
validateCertificates(certClass, jarFile);
JarUtil.extract(tmpFileCache.getTempDir(), nativeLibMap, jarFile,
null /* nativeLibraryPath */, extractNativeLibraries, extractClassFiles, extractOtherFiles);
// mark loaded (those were just loaded)
if(extractNativeLibraries) {
nativeLibJars.put(jarURI, LoadState.LOADED);
}
if(extractClassFiles) {
classFileJars.put(jarURI, LoadState.LOADED);
}
if(extractOtherFiles) {
resourceFileJars.put(jarURI, LoadState.LOADED);
}
} else if( !testLoadState(nativeLibJarsLS, LoadState.LOADED) ||
!testLoadState(classFileJarsLS, LoadState.LOADED) ||
!testLoadState(resourceFileJarsLS, LoadState.LOADED) ) {
throw new IOException("TempJarCache: addAll: "+jarURI+", previous load attempt failed");
}
}
public synchronized static final String findLibrary(final String libName) {
checkInitialized();
// try with mapped library basename first
String path = nativeLibMap.get(libName);
if(null == path) {
// if valid library name, try absolute path in temp-dir
if(null != NativeLibrary.isValidNativeLibraryName(libName, false)) {
final File f = new File(tmpFileCache.getTempDir(), libName);
if(f.exists()) {
path = f.getAbsolutePath();
}
}
}
return path;
}
/** TODO class access pending
* needs Classloader.defineClass(..) access, ie. own derivation - will do when needed ..
public static Class findClass(String name, ClassLoader cl) throws IOException, ClassFormatError {
checkInitialized();
final File f = new File(nativeTmpFileCache.getTempDir(), IOUtil.getClassFileName(name));
if(f.exists()) {
Class.forName(fname, initialize, loader)
URL url = new URL(f.getAbsolutePath());
byte[] b = IOUtil.copyStream2ByteArray(new BufferedInputStream( url.openStream() ));
MyClassLoader mcl = new MyClassLoader(cl);
return mcl.defineClass(name, b, 0, b.length);
}
return null;
} */
/** Similar to {@link ClassLoader#getResource(String)}. */
public synchronized static final String findResource(final String name) {
checkInitialized();
final File f = new File(tmpFileCache.getTempDir(), name);
if(f.exists()) {
return f.getAbsolutePath();
}
return null;
}
/** Similar to {@link ClassLoader#getResource(String)}. */
public synchronized static final URI getResource(final String name) throws URISyntaxException {
checkInitialized();
final File f = new File(tmpFileCache.getTempDir(), name);
if(f.exists()) {
return IOUtil.toURISimple(f);
}
return null;
}
private static void validateCertificates(final Class certClass, final JarFile jarFile) throws IOException, SecurityException {
if(null == certClass) {
throw new IllegalArgumentException("certClass is null");
}
final Certificate[] rootCerts = SecurityUtil.getCerts(certClass);
if( null != rootCerts ) {
// Only validate the jarFile's certs with ours, if we have any.
// Otherwise we may run uncertified JARs (application).
// In case one tries to run uncertified JARs, the wrapping applet/JNLP
// SecurityManager will kick in and throw a SecurityException.
JarUtil.validateCertificates(rootCerts, jarFile);
if(DEBUG) {
System.err.println("TempJarCache: validateCertificates: OK - Matching rootCerts in given class "+certClass.getName()+", nativeJar "+jarFile.getName());
}
} else if(DEBUG) {
System.err.println("TempJarCache: validateCertificates: OK - No rootCerts in given class "+certClass.getName()+", nativeJar "+jarFile.getName());
}
}
}