/*

 * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include <stdio.h>

#include <string.h>

#include <jvmti.h>

#include "jni_tools.h"

#include "nsk_tools.h"

#include "JVMTITools.h"

#include "jvmti_tools.h"

extern "C" {

static jvmtiEnv *test_jvmti = NULL;

static jvmtiCapabilities caps;

/*

 * Redefine a class with a new version (class file in byte array).

 *

 * native static public boolean redefineClassIntl(Class<?> clz, byte[] classFile);

 *

 * @param clz class for redefinition

 * @param classFile new version as a byte array

 * @return false if any errors occurred during class redefinition

 */

JNIEXPORT jboolean JNICALL

Java_vm_runtime_defmeth_shared_Util_redefineClassIntl(JNIEnv *env, jclass clazz, jclass clazzToRedefine, jbyteArray bytecodeArray) {

    jvmtiClassDefinition classDef;

    jboolean result = JNI_TRUE;

    if (!NSK_VERIFY(env != NULL) || !NSK_VERIFY(clazzToRedefine != NULL) || !NSK_VERIFY(bytecodeArray != NULL)) {

        return JNI_FALSE;

    }

    classDef.klass = clazzToRedefine;

    if (!NSK_JNI_VERIFY(env,

        return JNI_FALSE;

    }

    if (!NSK_JNI_VERIFY(env,

        return JNI_FALSE;

    }

    if (!NSK_JVMTI_VERIFY(

        result = JNI_FALSE;

    }

    // Need to cleanup reference to byte[] whether RedefineClasses succeeded or not

    if (!NSK_JNI_VERIFY_VOID(env,

        return JNI_FALSE;

    }

    return result;

}

jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {

    /* init framework and parse options */

    if (!NSK_VERIFY(nsk_jvmti_parseOptions(options)))

        return JNI_ERR;

    /* create JVMTI environment */

    if (!NSK_VERIFY((test_jvmti =

            nsk_jvmti_createJVMTIEnv(jvm, reserved)) != NULL))

        return JNI_ERR;

    memset(&caps, 0, sizeof(jvmtiCapabilities));

    caps.can_redefine_classes = 1;

        return JNI_ERR;

        return JNI_ERR;

    if (!caps.can_redefine_classes)

        printf("Warning: RedefineClasses is not implemented\n");

    return JNI_OK;

}

JNIEXPORT jint JNICALL Agent_OnLoad(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

JNIEXPORT jint JNICALL Agent_OnAttach(JavaVM *jvm, char *options, void *reserved) {

    return Agent_Initialize(jvm, options, reserved);

}

}