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[launch] Allow the ShadowClassLoader to load package private helpers while bootstrap-patching OSGi loaders

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Reinier Zwitserloot committed 2023-09-15 03:40:19 +02:00
1 parent d6365fbd23
commit 96b93cfa17
1 file changed
+17 -9
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src/eclipseAgent/lombok/eclipse/agent/EclipseLoaderPatcherTransplants.java
+17 -9
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@@ -52,21 +52,26 @@ public class EclipseLoaderPatcherTransplants {
}
public static Class overrideLoadResult(ClassLoader original, String name, boolean resolve) throws ClassNotFoundException {
boolean bootstrap = name.equals("lombok.launch.PackageShader") || name.equals("lombok.launch.ClassFileMetaData");
try {
Field shadowLoaderField = original.getClass().getField("lombok$shadowLoader");
ClassLoader shadowLoader = (ClassLoader) shadowLoaderField.get(original);
if (shadowLoader == null) {
if (bootstrap || shadowLoader == null) {
synchronized ("lombok$shadowLoader$globalLock".intern()) {
shadowLoader = (ClassLoader) shadowLoaderField.get(original);
if (shadowLoader == null) {
if (bootstrap || shadowLoader == null) {
Class shadowClassLoaderClass = (Class) original.getClass().getField("lombok$shadowLoaderClass").get(null);
Class classLoaderClass = Class.forName("java.lang.ClassLoader");
String jarLoc = (String) original.getClass().getField("lombok$location").get(null);
if (shadowClassLoaderClass == null) {
if (bootstrap || shadowClassLoaderClass == null) {
JarFile jf = new JarFile(jarLoc);
InputStream in = null;
try {
ZipEntry entry = jf.getEntry("lombok/launch/ShadowClassLoader.class");
ZipEntry entry = jf.getEntry(bootstrap ? (name.replace(".", "/") + ".class") : "lombok/launch/ShadowClassLoader.class");
if (entry == null) {
bootstrap = false;
entry = jf.getEntry("lombok/launch/ShadowClassLoader.class");
}
in = jf.getInputStream(entry);
byte[] bytes = new byte[65536];
int len = 0;
@@ -74,7 +79,7 @@ public class EclipseLoaderPatcherTransplants {
int r = in.read(bytes, len, bytes.length - len);
if (r == -1) break;
len += r;
if (len == bytes.length) throw new IllegalStateException("lombok.launch.ShadowClassLoader too large.");
if (len == bytes.length) throw new IllegalStateException((bootstrap ? name : "lombok.launch.ShadowClassLoader") + " too large.");
}
in.close();
@@ -101,12 +106,13 @@ public class EclipseLoaderPatcherTransplants {
Object lookup = lookupMethod.invoke(null, null);
Object type = methodTypeMethod.invoke(null, new Object[] {Class.class, new Class[] {String.class, byte[].class, int.class, int.class}});
Object method = findVirtualMethod.invoke(lookup, new Object[] {original.getClass(), "defineClass", type});
shadowClassLoaderClass = (Class) invokeMethod.invoke(method, new Object[] {new Object[] {original, "lombok.launch.ShadowClassLoader", bytes, new Integer(0), new Integer(len)}});
Class c = (Class) invokeMethod.invoke(method, new Object[] {new Object[] {original, bootstrap ? name : "lombok.launch.ShadowClassLoader", bytes, new Integer(0), new Integer(len)}});
if (bootstrap) return c;
shadowClassLoaderClass = c;
} catch (ClassNotFoundException e) {
// Ignore, old Java
}
if (shadowClassLoaderClass == null)
{
if (shadowClassLoaderClass == null) {
Class[] paramTypes = new Class[4];
paramTypes[0] = "".getClass();
paramTypes[1] = new byte[0].getClass();
@@ -114,7 +120,9 @@ public class EclipseLoaderPatcherTransplants {
paramTypes[3] = paramTypes[2];
Method defineClassMethod = classLoaderClass.getDeclaredMethod("defineClass", paramTypes);
defineClassMethod.setAccessible(true);
shadowClassLoaderClass = (Class) defineClassMethod.invoke(original, new Object[] {"lombok.launch.ShadowClassLoader", bytes, new Integer(0), new Integer(len)});
Class c = (Class) defineClassMethod.invoke(original, new Object[] {bootstrap ? name : "lombok.launch.ShadowClassLoader", bytes, new Integer(0), new Integer(len)});
if (bootstrap) return c;
shadowClassLoaderClass = c;
}
original.getClass().getField("lombok$shadowLoaderClass").set(null, shadowClassLoaderClass);
} finally {