139 lines
4.5 KiB
C++
139 lines
4.5 KiB
C++
/*
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* Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <jvmti.h>
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#include "agent_common.h"
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#include "JVMTITools.h"
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extern "C" {
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#define STATUS_FAILED 2
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#define PASSED 0
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static jvmtiEnv *jvmti = NULL;
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static jvmtiCapabilities caps;
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#ifdef STATIC_BUILD
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JNIEXPORT jint JNICALL Agent_OnLoad_redefclass006(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNICALL Agent_OnAttach_redefclass006(JavaVM *jvm, char *options, void *reserved) {
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return Agent_Initialize(jvm, options, reserved);
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}
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JNIEXPORT jint JNI_OnLoad_redefclass006(JavaVM *jvm, char *options, void *reserved) {
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return JNI_VERSION_1_8;
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}
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#endif
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jint Agent_Initialize(JavaVM *vm, char *options, void *reserved) {
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jint res;
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jvmtiError err;
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if ((res = vm->GetEnv((void **) &jvmti, JVMTI_VERSION_1_1)) != JNI_OK) {
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printf("%s: Failed to call GetEnv: error=%d\n", __FILE__, res);
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return JNI_ERR;
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}
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err = jvmti->GetPotentialCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetPotentialCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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err = jvmti->AddCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(AddCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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err = jvmti->GetCapabilities(&caps);
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if (err != JVMTI_ERROR_NONE) {
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printf("(GetCapabilities) unexpected error: %s (%d)\n",
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TranslateError(err), err);
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return JNI_ERR;
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}
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if (!caps.can_redefine_classes) {
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printf("Warning: RedefineClasses is not implemented\n");
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}
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return JNI_OK;
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}
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JNIEXPORT jint JNICALL
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Java_nsk_jvmti_RedefineClasses_redefclass006_makeRedefinition(JNIEnv *env,
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jclass cls, jint t_case, jclass redefCls, jbyteArray classBytes) {
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jvmtiError err;
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jvmtiClassDefinition classDef;
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jvmtiClassDefinition* classDefPtr = NULL;
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if (jvmti == NULL) {
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printf("JVMTI client was not properly loaded!\n");
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return STATUS_FAILED;
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}
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if (!caps.can_redefine_classes) {
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return PASSED;
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}
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switch(t_case) {
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/* NULL pointer to the jvmtiClassDefinition */
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case 0:
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break;
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/* NULL pointer to the jvmtiClassDefinition in debug mode */
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case 1:
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printf("Invoke RedefineClasses() with NULL pointer to the structure jvmtiClassDefinition\n");
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fflush(stdout);
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break;
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/* NULL pointer to the jvmtiClassDefinition->class_bytes in debug mode */
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case 3:
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printf("Invoke RedefineClasses() with NULL pointer to the field jvmtiClassDefinition->class_bytes\n");
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fflush(stdout);
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// fallthrough
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/* NULL pointer to the jvmtiClassDefinition->class_bytes */
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case 2:
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/* partly fill the structure jvmtiClassDefinition */
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classDef.klass = redefCls;
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classDef.class_byte_count = env->GetArrayLength(classBytes);
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classDef.class_bytes = NULL;
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classDefPtr = &classDef;
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break;
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}
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/* explode the bomb */
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if ((err = (jvmti->RedefineClasses(1, classDefPtr))) != JVMTI_ERROR_NULL_POINTER) {
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printf("TEST FAILED: the function RedefineClasses() returned error %d: %s\n",
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err, TranslateError(err));
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printf("\tBut it should return the error JVMTI_ERROR_NULL_POINTER.\n");
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return STATUS_FAILED;
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}
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return PASSED;
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}
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}
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