com.hazelcast.shaded.nonapi.io.github.classgraph.classpath.SystemJarFinder Maven / Gradle / Ivy
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/*
* This file is part of ClassGraph.
*
* Author: Luke Hutchison
*
* Hosted at: https://github.com/classgraph/classgraph
*
* --
*
* The MIT License (MIT)
*
* Copyright (c) 2019 Luke Hutchison
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
* documentation files (the "Software"), to deal in the Software without restriction, including without
* limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
* LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
* EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
* OR OTHER DEALINGS IN THE SOFTWARE.
*/
package com.hazelcast.shaded.nonapi.io.github.classgraph.classpath;
import java.io.File;
import java.io.IOException;
import java.util.LinkedHashSet;
import java.util.Set;
import com.hazelcast.shaded.nonapi.io.github.classgraph.utils.FastPathResolver;
import com.hazelcast.shaded.nonapi.io.github.classgraph.utils.FileUtils;
import com.hazelcast.shaded.nonapi.io.github.classgraph.utils.JarUtils;
import com.hazelcast.shaded.nonapi.io.github.classgraph.utils.VersionFinder;
/** A class to find rt.jar and any JRE "lib/" or "ext/" jars. */
public final class SystemJarFinder {
/** The paths of any "rt.jar" files found in the JRE. */
private static final Set RT_JARS = new LinkedHashSet<>();
/** The path of the first "rt.jar" found. */
private static final String RT_JAR;
/** The paths of any "lib/" or "ext/" jars found in the JRE. */
private static final Set JRE_LIB_OR_EXT_JARS = new LinkedHashSet<>();
/**
* Constructor.
*/
private SystemJarFinder() {
// Cannot be constructed
}
/**
* Add and search a JRE path.
*
* @param dir
* the JRE directory
* @return true if the directory was readable.
*/
private static boolean addJREPath(final File dir) {
if (dir != null && !dir.getPath().isEmpty() && FileUtils.canReadAndIsDir(dir)) {
final File[] dirFiles = dir.listFiles();
if (dirFiles != null) {
for (final File file : dirFiles) {
final String filePath = file.getPath();
if (filePath.endsWith(".jar")) {
final String jarPathResolved = FastPathResolver.resolve(FileUtils.currDirPath(), filePath);
if (jarPathResolved.endsWith("/rt.jar")) {
RT_JARS.add(jarPathResolved);
} else {
JRE_LIB_OR_EXT_JARS.add(jarPathResolved);
}
try {
final File canonicalFile = file.getCanonicalFile();
final String canonicalFilePath = canonicalFile.getPath();
if (!canonicalFilePath.equals(filePath)) {
final String canonicalJarPathResolved = FastPathResolver
.resolve(FileUtils.currDirPath(), filePath);
JRE_LIB_OR_EXT_JARS.add(canonicalJarPathResolved);
}
} catch (IOException | SecurityException e) {
// Ignored
}
}
}
return true;
}
}
return false;
}
// Find jars in JRE dirs ({java.home}, {java.home}/lib, {java.home}/lib/ext, etc.)
static {
String javaHome = VersionFinder.getProperty("java.home");
if (javaHome == null || javaHome.isEmpty()) {
javaHome = System.getenv("JAVA_HOME");
}
if (javaHome != null && !javaHome.isEmpty()) {
final File javaHomeFile = new File(javaHome);
addJREPath(javaHomeFile);
if (javaHomeFile.getName().equals("jre")) {
// Try adding "{java.home}/.." as a JDK root when java.home is a JRE path
final File jreParent = javaHomeFile.getParentFile();
addJREPath(jreParent);
addJREPath(new File(jreParent, "lib"));
addJREPath(new File(jreParent, "lib/ext"));
} else {
// Try adding "{java.home}/jre" as a JRE root when java.home is not a JRE path
addJREPath(new File(javaHomeFile, "jre"));
}
addJREPath(new File(javaHomeFile, "lib"));
addJREPath(new File(javaHomeFile, "lib/ext"));
addJREPath(new File(javaHomeFile, "jre/lib"));
addJREPath(new File(javaHomeFile, "jre/lib/ext"));
addJREPath(new File(javaHomeFile, "packages"));
addJREPath(new File(javaHomeFile, "packages/lib"));
addJREPath(new File(javaHomeFile, "packages/lib/ext"));
}
final String javaExtDirs = VersionFinder.getProperty("java.ext.dirs");
if (javaExtDirs != null && !javaExtDirs.isEmpty()) {
for (final String javaExtDir : JarUtils.smartPathSplit(javaExtDirs, /* scanSpec = */ null)) {
if (!javaExtDir.isEmpty()) {
addJREPath(new File(javaExtDir));
}
}
}
// System extension paths -- see: https://docs.oracle.com/javase/tutorial/ext/basics/install.html
switch (VersionFinder.OS) {
case Linux:
case Unix:
case BSD:
case Unknown:
addJREPath(new File("/usr/java/packages"));
addJREPath(new File("/usr/java/packages/lib"));
addJREPath(new File("/usr/java/packages/lib/ext"));
break;
case MacOSX:
addJREPath(new File("/System/Library/Java"));
addJREPath(new File("/System/Library/Java/Libraries"));
addJREPath(new File("/System/Library/Java/Extensions"));
break;
case Windows:
final String systemRoot = File.separatorChar == '\\' ? System.getenv("SystemRoot") : null;
if (systemRoot != null) {
addJREPath(new File(systemRoot, "Sun\\Java"));
addJREPath(new File(systemRoot, "Sun\\Java\\lib"));
addJREPath(new File(systemRoot, "Sun\\Java\\lib\\ext"));
addJREPath(new File(systemRoot, "Oracle\\Java"));
addJREPath(new File(systemRoot, "Oracle\\Java\\lib"));
addJREPath(new File(systemRoot, "Oracle\\Java\\lib\\ext"));
}
break;
case Solaris:
// Solaris paths:
addJREPath(new File("/usr/jdk/packages"));
addJREPath(new File("/usr/jdk/packages/lib"));
addJREPath(new File("/usr/jdk/packages/lib/ext"));
break;
default:
break;
}
RT_JAR = RT_JARS.isEmpty() ? null : FastPathResolver.resolve(RT_JARS.iterator().next());
}
/**
* Get the JRE "rt.jar" path.
*
* @return The path of rt.jar (in JDK 7 or 8), or null if it wasn't found (e.g. in JDK 9+).
*/
public static String getJreRtJarPath() {
// Only include the first rt.jar -- if there is a copy in both the JDK and JRE, no need to scan both
return RT_JAR;
}
/**
* Get the JRE "lib/" and "ext/" jar paths.
*
* @return The paths for any jarfiles found in JRE/JDK "lib/" or "ext/" directories.
*/
public static Set getJreLibOrExtJars() {
return JRE_LIB_OR_EXT_JARS;
}
}
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