PandacubeFr/BungeeCord
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Refactor native code and implement our own JNI wrapper around zlib.

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The previous native cipher code has been refactored so that it may be loaded and used slightly more generically, allowing more native components to be easily added as time goes on.
I have also written a new native code compression module, which wraps around zlib in the same manner that Inflater / Deflater does, however it operates directly on the memory addresses of it's input / output buffers which means that we can save one, or maybe even two copies. To support this, the VarInt decoder has been adjusted to always use a native buffer.
This commit is contained in:
md_5
2015-02-01 21:05:16 +11:00
parent e6da9cbba8
commit 0d569ac0d1
29 changed files with 599 additions and 148 deletions
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11
native/src/main/c/NativeCipherImpl.cpp
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@@ -1,11 +1,12 @@
#include <openssl/evp.h>
#include "net_md_5_bungee_NativeCipherImpl.h"
#include "net_md_5_bungee_jni_cipher_NativeCipherImpl.h"
typedef unsigned char byte;
jlong JNICALL Java_net_md_15_bungee_NativeCipherImpl_init(JNIEnv* env, jobject obj, jboolean forEncryption, jbyteArray key) {
jlong JNICALL Java_net_md_15_bungee_jni_cipher_NativeCipherImpl_init(JNIEnv* env, jobject obj, jboolean forEncryption, jbyteArray key) {
jbyte *keyBytes = env->GetByteArrayElements(key, NULL);
// TODO: Perhaps we need to throw some exceptions in the unlikely event this fails?
EVP_CIPHER_CTX *cipherCtx = EVP_CIPHER_CTX_new();
EVP_CipherInit(cipherCtx, EVP_aes_128_cfb8(), (byte*) keyBytes, (byte*) keyBytes, forEncryption);
@@ -13,10 +14,12 @@ jlong JNICALL Java_net_md_15_bungee_NativeCipherImpl_init(JNIEnv* env, jobject o
return (jlong) cipherCtx;
}
void Java_net_md_15_bungee_NativeCipherImpl_free(JNIEnv* env, jobject obj, jlong ctx) {
void Java_net_md_15_bungee_jni_cipher_NativeCipherImpl_free(JNIEnv* env, jobject obj, jlong ctx) {
// TODO: Perhaps we need to throw some exceptions in the unlikely event this fails?
EVP_CIPHER_CTX_free((EVP_CIPHER_CTX*) ctx);
}
void Java_net_md_15_bungee_NativeCipherImpl_cipher(JNIEnv* env, jobject obj, jlong ctx, jlong in, jlong out, jint length) {
void Java_net_md_15_bungee_jni_cipher_NativeCipherImpl_cipher(JNIEnv* env, jobject obj, jlong ctx, jlong in, jlong out, jint length) {
// TODO: Perhaps we need to throw some exceptions in the unlikely event this fails?
EVP_CipherUpdate((EVP_CIPHER_CTX*) ctx, (byte*) out, &length, (byte*) in, length);
}