285 lines
9.8 KiB
C
285 lines
9.8 KiB
C
/*
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* Copyright (c) 2016, 2024, 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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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef JNI_ENV_ARG
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#ifdef __cplusplus
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#define JNI_ENV_ARG(x, y) y
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#define JNI_ENV_PTR(x) x
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#else
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#define JNI_ENV_ARG(x,y) x, y
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#define JNI_ENV_PTR(x) (*x)
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#endif
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#endif
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#define TranslateError(err) "JVMTI error"
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#define PASSED 0
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#define FAILED 2
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static const char *EXC_CNAME = "java/lang/Exception";
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static const char* MOD_CNAME = "Ljava/lang/Module;";
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static jvmtiEnv *jvmti = NULL;
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static jint result = PASSED;
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static jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved);
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JNIEXPORT
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jint JNICALL Agent_OnLoad(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
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jint JNICALL Agent_OnAttach(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
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jint JNICALL JNI_OnLoad(JavaVM *jvm, void *reserved) {
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return JNI_VERSION_1_8;
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}
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static
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jint Agent_Initialize(JavaVM *jvm, char *options, void *reserved) {
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jint res = JNI_ENV_PTR(jvm)->GetEnv(JNI_ENV_ARG(jvm, (void **) &jvmti),
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JVMTI_VERSION_9);
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if (res != JNI_OK || jvmti == NULL) {
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printf(" Error: wrong result of a valid call to GetEnv!\n");
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return JNI_ERR;
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}
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return JNI_OK;
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}
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static
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void throw_exc(JNIEnv *env, char *msg) {
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jclass exc_class = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, EXC_CNAME));
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jint rt = JNI_OK;
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if (exc_class == NULL) {
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printf("throw_exc: Error in FindClass(env, %s)\n", EXC_CNAME);
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return;
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}
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rt = JNI_ENV_PTR(env)->ThrowNew(JNI_ENV_ARG(env, exc_class), msg);
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if (rt == JNI_ERR) {
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printf("throw_exc: Error in JNI ThrowNew(env, %s)\n", msg);
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}
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}
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static
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jclass jlM(JNIEnv *env) {
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jclass cls = NULL;
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cls = JNI_ENV_PTR(env)->FindClass(JNI_ENV_ARG(env, MOD_CNAME));
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if (cls == NULL) {
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printf(" Error in JNI FindClass: %s\n", MOD_CNAME);
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}
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return cls;
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}
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jmethodID
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get_method(JNIEnv *env, jclass clazz, const char * name, const char *sig) {
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jmethodID method = NULL;
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method = JNI_ENV_PTR(env)->GetMethodID(JNI_ENV_ARG(env, clazz), name, sig);
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if (method == NULL) {
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printf(" Error in JNI GetMethodID %s with signature %s", name, sig);
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}
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return method;
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}
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static
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jboolean can_use_service(JNIEnv *env, jobject module, jclass service) {
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static jmethodID mCanUse = NULL;
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jboolean res = JNI_FALSE;
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if (mCanUse == NULL) {
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const char* sign = "(Ljava/lang/Class;)Z";
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mCanUse = get_method(env, jlM(env), "canUse", sign);
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}
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res = JNI_ENV_PTR(env)->CallBooleanMethod(JNI_ENV_ARG(env, module),
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mCanUse, service);
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return res;
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}
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JNIEXPORT jint JNICALL
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Java_MyPackage_AddModuleUsesAndProvidesTest_checkUses(JNIEnv *env,
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jclass cls,
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jobject baseModule,
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jclass service) {
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jvmtiError err = JVMTI_ERROR_NONE;
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jboolean used = JNI_FALSE;
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// Add a service to use to NULL module
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printf("Check #UN1:\n");
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err = (*jvmti)->AddModuleUses(jvmti, NULL, service);
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if (err != JVMTI_ERROR_NULL_POINTER) {
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printf("#UN1: jvmtiError from AddModuleUses: %d\n", err);
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throw_exc(env, "Check #UN1: failed to return JVMTI_ERROR_NULL_POINTER for module==NULL");
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return FAILED;
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}
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// Add NULL service to use to baseModule
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printf("Check #UN2:\n");
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err = (*jvmti)->AddModuleUses(jvmti, baseModule, NULL);
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if (err != JVMTI_ERROR_NULL_POINTER) {
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printf("#UN2: jvmtiError from AddModuleUses: %d\n", err);
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throw_exc(env, "Check #UN2: failed to return JVMTI_ERROR_NULL_POINTER for service==NULL");
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return FAILED;
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}
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// Add service to use to invalid module (cls)
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printf("Check #UI1:\n");
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err = (*jvmti)->AddModuleUses(jvmti, (jobject)cls, service);
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if (err != JVMTI_ERROR_INVALID_MODULE) {
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printf("#UI1: jvmtiError from AddModuleUses: %d\n", err);
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throw_exc(env, "Check #UI1: did not get expected JVMTI_ERROR_INVALID_MODULE for invalid module");
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return FAILED;
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}
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// Add invalid service (thisModule) to use to baseModule
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printf("Check #UI2:\n");
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err = (*jvmti)->AddModuleUses(jvmti, baseModule, baseModule);
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if (err != JVMTI_ERROR_INVALID_CLASS) {
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printf("#UI2: jvmtiError from AddModuleUses: %d\n", err);
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throw_exc(env, "Check #UI2: did not get expected JVMTI_ERROR_INVALID_CLASS for invalid service");
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return FAILED;
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}
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// Check if the service can not be used
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printf("Check #UC1:\n");
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used = can_use_service(env, baseModule, service);
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if (used != JNI_FALSE) {
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throw_exc(env, "Check #UC1: unexpected use of service");
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return FAILED;
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}
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// Add uses of a correct service
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printf("Check #UC2:\n");
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err = (*jvmti)->AddModuleUses(jvmti, baseModule, service);
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if (err != JVMTI_ERROR_NONE) {
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printf("#UC2: jvmtiError from AddModuleUses: %d\n", err);
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throw_exc(env, "Check #UC2: got unexpected JVMTI error");
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return FAILED;
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}
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// Check if the service can not be used
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printf("Check #UC3:\n");
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used = can_use_service(env, baseModule, service);
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if (used == JNI_FALSE) {
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throw_exc(env, "Check #UC3: service can not be used unexpectedly");
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return FAILED;
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}
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fflush(NULL);
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return PASSED;
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}
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JNIEXPORT jint JNICALL
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Java_MyPackage_AddModuleUsesAndProvidesTest_checkProvides(JNIEnv *env,
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jclass cls,
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jobject baseModule,
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jclass service,
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jclass serviceImpl) {
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jvmtiError err = JVMTI_ERROR_NONE;
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jboolean provided = JNI_FALSE;
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// Add provides to NULL module
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printf("Check #PN1:\n");
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err = (*jvmti)->AddModuleProvides(jvmti, NULL, service, serviceImpl);
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if (err != JVMTI_ERROR_NULL_POINTER) {
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printf("#PN1: jvmtiError from AddModuleProvides: %d\n", err);
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throw_exc(env, "Check #PN1: failed to return JVMTI_ERROR_NULL_POINTER for module==NULL");
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return FAILED;
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}
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// Add provides with NULL service
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printf("Check #PN2:\n");
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err = (*jvmti)->AddModuleProvides(jvmti, baseModule, NULL, serviceImpl);
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if (err != JVMTI_ERROR_NULL_POINTER) {
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printf("#PN2: jvmtiError from AddModuleProvides: %d\n", err);
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throw_exc(env, "Check #PN2: failed to return JVMTI_ERROR_NULL_POINTER for service==NULL");
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return FAILED;
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}
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// Add provides with NULL serviceImpl
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printf("Check #PN3:\n");
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err = (*jvmti)->AddModuleProvides(jvmti, baseModule, service, NULL);
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if (err != JVMTI_ERROR_NULL_POINTER) {
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printf("#PN3: jvmtiError from AddModuleProvides: %d\n", err);
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throw_exc(env, "Check #PN3: failed to return JVMTI_ERROR_NULL_POINTER for serviceImpl==NULL");
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return FAILED;
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}
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// Add provides to invalid module (cls)
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printf("Check #PI1:\n");
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err = (*jvmti)->AddModuleProvides(jvmti, (jobject)cls, service, serviceImpl);
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if (err != JVMTI_ERROR_INVALID_MODULE) {
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printf("#PI1: jvmtiError from AddModuleProvides: %d\n", err);
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throw_exc(env, "Check #PI1: did not get expected JVMTI_ERROR_INVALID_MODULE for invalid module");
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return FAILED;
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}
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// Add provides with invalid service (baseModule)
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printf("Check #PI2:\n");
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err = (*jvmti)->AddModuleProvides(jvmti, baseModule, baseModule, serviceImpl);
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if (err != JVMTI_ERROR_INVALID_CLASS) {
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printf("#PI2: jvmtiError from AddModuleProvides: %d\n", err);
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throw_exc(env, "Check #PI2: did not get expected JVMTI_ERROR_INVALID_CLASS for invalid service");
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return FAILED;
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}
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// Add provides with invalid serviceImpl (baseModule)
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printf("Check #PI3:\n");
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err = (*jvmti)->AddModuleProvides(jvmti, baseModule, service, baseModule);
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if (err != JVMTI_ERROR_INVALID_CLASS) {
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printf("#PI3: jvmtiError from AddModuleProvides: %d\n", err);
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throw_exc(env, "Check #PI3: did not get expected JVMTI_ERROR_INVALID_CLASS for invalid serviceImpl");
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return FAILED;
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}
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// Add provides to baseModule with correct service and serviceImpl
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printf("Check #PC2:\n");
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err = (*jvmti)->AddModuleProvides(jvmti, baseModule, service, serviceImpl);
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if (err != JVMTI_ERROR_NONE) {
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printf("#PC2: jvmtiError from AddModuleExports: %d\n", err);
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throw_exc(env, "Check #PC2: error in add provides to baseModule with correct service and serviceImpl");
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return FAILED;
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}
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fflush(NULL);
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return PASSED;
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}
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#ifdef __cplusplus
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}
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#endif
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