org.scijava.nativelib.NativeLibraryUtil Maven / Gradle / Ivy
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/*
* #%L
* Native library loader for extracting and loading native libraries from Java.
* %%
* Copyright (C) 2010 - 2015 Board of Regents of the University of
* Wisconsin-Madison and Glencoe Software, Inc.
* %%
* 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 THE COPYRIGHT HOLDERS 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.
* #L%
*/
package org.scijava.nativelib;
import java.io.File;
import java.io.IOException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This class is a utility for loading native libraries.
*
* Native libraries should be packaged into a single jar file, with the
* following directory and file structure:
*
*
* META-INF
* lib
* linux_32
* libxxx[-vvv].so
* linux_64
* libxxx[-vvv].so
* linux_arm
* libxxx[-vvv].so
* linux_arm64
* libxxx[-vvv].so
* osx_32
* libxxx[-vvv].dylib
* osx_64
* libxxx[-vvv].dylib
* windows_32
* xxx[-vvv].dll
* windows_64
* xxx[-vvv].dll
*
*
* Here "xxx" is the name of the native library and "-vvv" is an optional
* version number.
*
* Current approach is to unpack the native library into a temporary file and
* load from there.
*
* @author Aivar Grislis
*/
public class NativeLibraryUtil {
public static enum Architecture {
UNKNOWN, LINUX_32, LINUX_64, LINUX_ARM, LINUX_ARM64, WINDOWS_32, WINDOWS_64, OSX_32,
OSX_64, OSX_PPC
}
private static enum Processor {
UNKNOWN, INTEL_32, INTEL_64, PPC, ARM, AARCH_64
}
private static Architecture architecture = Architecture.UNKNOWN;
private static final String DELIM = "/";
private static final String JAVA_TMPDIR = "java.io.tmpdir";
private static final Logger LOGGER = LoggerFactory.getLogger(
"org.scijava.nativelib.NativeLibraryUtil");
/**
* Determines the underlying hardware platform and architecture.
*
* @return enumerated architecture value
*/
public static Architecture getArchitecture() {
if (Architecture.UNKNOWN == architecture) {
final Processor processor = getProcessor();
if (Processor.UNKNOWN != processor) {
final String name = System.getProperty("os.name").toLowerCase();
if (name.contains("nix") || name.contains("nux")) {
if (Processor.INTEL_32 == processor) {
architecture = Architecture.LINUX_32;
}
else if (Processor.INTEL_64 == processor) {
architecture = Architecture.LINUX_64;
}
else if (Processor.ARM == processor) {
architecture = Architecture.LINUX_ARM;
}
else if (Processor.AARCH_64 == processor) {
architecture = Architecture.LINUX_ARM64;
}
}
else if (name.contains("win")) {
if (Processor.INTEL_32 == processor) {
architecture = Architecture.WINDOWS_32;
}
else if (Processor.INTEL_64 == processor) {
architecture = Architecture.WINDOWS_64;
}
}
else if (name.contains("mac")) {
if (Processor.INTEL_32 == processor) {
architecture = Architecture.OSX_32;
}
else if (Processor.INTEL_64 == processor) {
architecture = Architecture.OSX_64;
}
else if (Processor.PPC == processor) {
architecture = Architecture.OSX_PPC;
}
}
}
}
LOGGER.debug("architecture is " + architecture + " os.name is " +
System.getProperty("os.name").toLowerCase());
return architecture;
}
/**
* Determines what processor is in use.
*
* @return The processor in use.
*/
private static Processor getProcessor() {
Processor processor = Processor.UNKNOWN;
int bits;
// Note that this is actually the architecture of the installed JVM.
final String arch = System.getProperty("os.arch").toLowerCase();
if (arch.contains("arm")) {
processor = Processor.ARM;
}
else if (arch.contains("aarch64")) {
processor = Processor.AARCH_64;
}
else if (arch.contains("ppc")) {
processor = Processor.PPC;
}
else if (arch.contains("86") || arch.contains("amd")) {
bits = 32;
if (arch.contains("64")) {
bits = 64;
}
processor = (32 == bits) ? Processor.INTEL_32 : Processor.INTEL_64;
}
LOGGER.debug("processor is " + processor + " os.arch is " +
System.getProperty("os.arch").toLowerCase());
return processor;
}
/**
* Returns the path to the native library.
*
* @return path
*/
public static String getPlatformLibraryPath() {
String path = "META-INF" + DELIM + "lib" + DELIM;
path += getArchitecture().name().toLowerCase() + DELIM;
LOGGER.debug("platform specific path is " + path);
return path;
}
/**
* Returns the full file name (without path) of the native library.
*
* @param libName name of library
* @return file name
*/
public static String getPlatformLibraryName(final String libName) {
String name = null;
switch (getArchitecture()) {
case LINUX_32:
case LINUX_64:
case LINUX_ARM:
case LINUX_ARM64:
name = libName + ".so";
break;
case WINDOWS_32:
case WINDOWS_64:
name = libName + ".dll";
break;
case OSX_32:
case OSX_64:
name = "lib" + libName + ".dylib";
break;
}
LOGGER.debug("native library name " + name);
return name;
}
/**
* Returns the Maven-versioned file name of the native library. In order for
* this to work Maven needs to save its version number in the jar manifest.
* The version of the library-containing jar and the version encoded in the
* native library names should agree.
*
*
* {@code
*
*
*
* maven-jar-plugin
* true *
*
*
*
* com.example.package
* true *
*
*
*
*
*
*
*
* * = necessary to save version information in manifest
* }
*
*
* @param libraryJarClass any class within the library-containing jar
* @param libName name of library
* @return The Maven-versioned file name of the native library.
*/
public static String getVersionedLibraryName(final Class libraryJarClass,
String libName)
{
final String version =
libraryJarClass.getPackage().getImplementationVersion();
if (null != version && version.length() > 0) {
libName += "-" + version;
}
return libName;
}
/**
* Loads the native library. Picks up the version number to specify from the
* library-containing jar.
*
* @param libraryJarClass any class within the library-containing jar
* @param libName name of library
* @return whether or not successful
*/
public static boolean loadVersionedNativeLibrary(
final Class libraryJarClass, String libName)
{
// append version information to native library name
libName = getVersionedLibraryName(libraryJarClass, libName);
return loadNativeLibrary(libraryJarClass, libName);
}
/**
* Loads the native library.
*
* @param libraryJarClass any class within the library-containing jar
* @param libName name of library
* @return whether or not successful
*/
public static boolean loadNativeLibrary(final Class libraryJarClass,
final String libName)
{
boolean success = false;
if (Architecture.UNKNOWN == getArchitecture()) {
LOGGER.warn("No native library available for this platform.");
}
else {
try {
// will extract library to temporary directory
final String tmpDirectory = System.getProperty(JAVA_TMPDIR);
final JniExtractor jniExtractor =
new DefaultJniExtractor(libraryJarClass, tmpDirectory);
// do extraction
final File extractedFile =
jniExtractor.extractJni(getPlatformLibraryPath(), libName);
// load extracted library from temporary directory
System.load(extractedFile.getPath());
success = true;
}
catch (final IOException e) {
LOGGER.debug("IOException creating DefaultJniExtractor", e);
}
catch (final SecurityException e) {
LOGGER.debug("Can't load dynamic library", e);
}
catch (final UnsatisfiedLinkError e) {
LOGGER.debug("Problem with library", e);
}
}
return success;
}
}