Working on improvements to natives. Not done yet.

native/src/main/c/jni_cipher.c

@@ -8,7 +8,7 @@ typedef unsigned char byte;
 
 JNIEXPORT jlong JNICALL
 Java_com_velocitypowered_natives_encryption_OpenSslCipherImpl_init(JNIEnv *env,
-    jobject obj,
+    jclass clazz,
     jbyteArray key,
     jboolean encrypt)
 {
@@ -41,7 +41,7 @@ Java_com_velocitypowered_natives_encryption_OpenSslCipherImpl_init(JNIEnv *env,
 
 JNIEXPORT void JNICALL
 Java_com_velocitypowered_natives_encryption_OpenSslCipherImpl_free(JNIEnv *env,
-    jobject obj,
+    jclass clazz,
     jlong ptr)
 {
     EVP_CIPHER_CTX_free((EVP_CIPHER_CTX *) ptr);
@@ -49,7 +49,7 @@ Java_com_velocitypowered_natives_encryption_OpenSslCipherImpl_free(JNIEnv *env,
 
 JNIEXPORT void JNICALL
 Java_com_velocitypowered_natives_encryption_OpenSslCipherImpl_process(JNIEnv *env,
-    jobject obj,
+    jclass clazz,
     jlong ptr,
     jlong source,
     jint len,

native/src/main/c/jni_zlib_deflate.c

@@ -7,7 +7,7 @@
 
 JNIEXPORT jlong JNICALL
 Java_com_velocitypowered_natives_compression_NativeZlibDeflate_init(JNIEnv *env,
-    jobject obj,
+    jclass clazz,
     jint level)
 {
     struct libdeflate_compressor *compressor = libdeflate_alloc_compressor(level);
@@ -21,7 +21,7 @@ Java_com_velocitypowered_natives_compression_NativeZlibDeflate_init(JNIEnv *env,
 
 JNIEXPORT void JNICALL
 Java_com_velocitypowered_natives_compression_NativeZlibDeflate_free(JNIEnv *env,
-    jobject obj,
+    jclass clazz,
     jlong ctx)
 {
     libdeflate_free_compressor((struct libdeflate_compressor *) ctx);
@@ -29,7 +29,7 @@ Java_com_velocitypowered_natives_compression_NativeZlibDeflate_free(JNIEnv *env,
 
 JNIEXPORT jboolean JNICALL
 Java_com_velocitypowered_natives_compression_NativeZlibDeflate_process(JNIEnv *env,
-    jobject obj,
+    jclass clazz,
     jlong ctx,
     jlong sourceAddress,
     jint sourceLength,

native/src/main/c/jni_zlib_inflate.c

@@ -7,7 +7,7 @@
 
 JNIEXPORT jlong JNICALL
 Java_com_velocitypowered_natives_compression_NativeZlibInflate_init(JNIEnv *env,
-    jobject obj)
+    jclass clazz)
 {
     struct libdeflate_decompressor *decompress = libdeflate_alloc_decompressor();
     if (decompress == NULL) {
@@ -21,7 +21,7 @@ Java_com_velocitypowered_natives_compression_NativeZlibInflate_init(JNIEnv *env,
 
 JNIEXPORT void JNICALL
 Java_com_velocitypowered_natives_compression_NativeZlibInflate_free(JNIEnv *env,
-    jobject obj,
+    jclass clazz,
     jlong ctx)
 {
     libdeflate_free_decompressor((struct libdeflate_decompressor *) ctx);
@@ -29,7 +29,7 @@ Java_com_velocitypowered_natives_compression_NativeZlibInflate_free(JNIEnv *env,
 
 JNIEXPORT jboolean JNICALL
 Java_com_velocitypowered_natives_compression_NativeZlibInflate_process(JNIEnv *env,
-    jobject obj,
+    jclass clazz,
     jlong ctx,
     jlong sourceAddress,
     jint sourceLength,

native/src/main/java/com/velocitypowered/natives/compression/LibdeflateVelocityCompressor.java

@@ -9,9 +9,7 @@ public class LibdeflateVelocityCompressor implements VelocityCompressor {
 
   public static final VelocityCompressorFactory FACTORY = LibdeflateVelocityCompressor::new;
 
-  private final NativeZlibInflate inflate = new NativeZlibInflate();
   private final long inflateCtx;
-  private final NativeZlibDeflate deflate = new NativeZlibDeflate();
   private final long deflateCtx;
   private boolean disposed = false;
 
@@ -21,8 +19,8 @@ public class LibdeflateVelocityCompressor implements VelocityCompressor {
       throw new IllegalArgumentException("Invalid compression level " + level);
     }
 
-    this.inflateCtx = inflate.init();
-    this.deflateCtx = deflate.init(correctedLevel);
+    this.inflateCtx = NativeZlibInflate.init();
+    this.deflateCtx = NativeZlibDeflate.init(correctedLevel);
   }
 
   @Override
@@ -40,7 +38,7 @@ public class LibdeflateVelocityCompressor implements VelocityCompressor {
     long sourceAddress = source.memoryAddress() + source.readerIndex();
     long destinationAddress = destination.memoryAddress() + destination.writerIndex();
 
-    inflate.process(inflateCtx, sourceAddress, source.readableBytes(), destinationAddress,
+    NativeZlibInflate.process(inflateCtx, sourceAddress, source.readableBytes(), destinationAddress,
         uncompressedSize);
     destination.writerIndex(destination.writerIndex() + uncompressedSize);
   }
@@ -53,7 +51,7 @@ public class LibdeflateVelocityCompressor implements VelocityCompressor {
       long sourceAddress = source.memoryAddress() + source.readerIndex();
       long destinationAddress = destination.memoryAddress() + destination.writerIndex();
 
-      int produced = deflate.process(deflateCtx, sourceAddress, source.readableBytes(),
+      int produced = NativeZlibDeflate.process(deflateCtx, sourceAddress, source.readableBytes(),
           destinationAddress, destination.writableBytes());
       if (produced > 0) {
         destination.writerIndex(destination.writerIndex() + produced);
@@ -72,8 +70,8 @@ public class LibdeflateVelocityCompressor implements VelocityCompressor {
   @Override
   public void close() {
     if (!disposed) {
-      inflate.free(inflateCtx);
-      deflate.free(deflateCtx);
+      NativeZlibInflate.free(inflateCtx);
+      NativeZlibDeflate.free(deflateCtx);
     }
     disposed = true;
   }

native/src/main/java/com/velocitypowered/natives/compression/NativeZlibDeflate.java

@@ -5,10 +5,10 @@ package com.velocitypowered.natives.compression;
  */
 class NativeZlibDeflate {
 
-  native long init(int level);
+  static native long init(int level);
 
-  native long free(long ctx);
+  static native long free(long ctx);
 
-  native int process(long ctx, long sourceAddress, int sourceLength, long destinationAddress,
+  static native int process(long ctx, long sourceAddress, int sourceLength, long destinationAddress,
       int destinationLength);
 }

native/src/main/java/com/velocitypowered/natives/compression/NativeZlibInflate.java

@@ -7,10 +7,10 @@ import java.util.zip.DataFormatException;
  */
 class NativeZlibInflate {
 
-  native long init();
+  static native long init();
 
-  native long free(long ctx);
+  static native long free(long ctx);
 
-  native boolean process(long ctx, long sourceAddress, int sourceLength, long destinationAddress,
-      int destinationLength) throws DataFormatException;
+  static  native boolean process(long ctx, long sourceAddress, int sourceLength,
+      long destinationAddress, int destinationLength) throws DataFormatException;
 }

native/src/main/java/com/velocitypowered/natives/encryption/NativeVelocityCipher.java

@@ -19,13 +19,11 @@ public class NativeVelocityCipher implements VelocityCipher {
       return new NativeVelocityCipher(false, key);
     }
   };
-  private static final OpenSslCipherImpl impl = new OpenSslCipherImpl();
-
   private final long ctx;
   private boolean disposed = false;
 
   private NativeVelocityCipher(boolean encrypt, SecretKey key) throws GeneralSecurityException {
-    this.ctx = impl.init(key.getEncoded(), encrypt);
+    this.ctx = OpenSslCipherImpl.init(key.getEncoded(), encrypt);
   }
 
   @Override
@@ -35,13 +33,13 @@ public class NativeVelocityCipher implements VelocityCipher {
     long base = source.memoryAddress() + source.readerIndex();
     int len = source.readableBytes();
 
-    impl.process(ctx, base, len, base);
+    OpenSslCipherImpl.process(ctx, base, len, base);
   }
 
   @Override
   public void close() {
     if (!disposed) {
-      impl.free(ctx);
+      OpenSslCipherImpl.free(ctx);
     }
     disposed = true;
   }

native/src/main/java/com/velocitypowered/natives/encryption/OpenSslCipherImpl.java

@@ -4,9 +4,9 @@ import java.security.GeneralSecurityException;
 
 class OpenSslCipherImpl {
 
-  native long init(byte[] key, boolean encrypt) throws GeneralSecurityException;
+  static native long init(byte[] key, boolean encrypt) throws GeneralSecurityException;
 
-  native void process(long ctx, long source, int len, long dest);
+  static native void process(long ctx, long source, int len, long dest);
 
-  native void free(long ptr);
+  static native void free(long ptr);
 }