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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "classes.h"
#include <stdio.h>
#include "base/macros.h"
#include "jni.h"
#include "openjdkjvmti/jvmti.h"
#include "ScopedLocalRef.h"
#include "ti-agent/common_helper.h"
#include "ti-agent/common_load.h"
namespace art {
namespace Test912Classes {
extern "C" JNIEXPORT jobjectArray JNICALL Java_Main_getClassSignature(
JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jclass klass) {
char* sig;
char* gen;
jvmtiError result = jvmti_env->GetClassSignature(klass, &sig, &gen);
if (result != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(result, &err);
printf("Failure running GetClassSignature: %s\n", err);
return nullptr;
}
auto callback = [&](jint i) {
if (i == 0) {
return sig == nullptr ? nullptr : env->NewStringUTF(sig);
} else {
return gen == nullptr ? nullptr : env->NewStringUTF(gen);
}
};
jobjectArray ret = CreateObjectArray(env, 2, "java/lang/String", callback);
// Need to deallocate the strings.
if (sig != nullptr) {
jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(sig));
}
if (gen != nullptr) {
jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(gen));
}
return ret;
}
extern "C" JNIEXPORT jboolean JNICALL Java_Main_isInterface(
JNIEnv* env ATTRIBUTE_UNUSED, jclass Main_klass ATTRIBUTE_UNUSED, jclass klass) {
jboolean is_interface = JNI_FALSE;
jvmtiError result = jvmti_env->IsInterface(klass, &is_interface);
if (result != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(result, &err);
printf("Failure running IsInterface: %s\n", err);
return JNI_FALSE;
}
return is_interface;
}
extern "C" JNIEXPORT jboolean JNICALL Java_Main_isArrayClass(
JNIEnv* env ATTRIBUTE_UNUSED, jclass Main_klass ATTRIBUTE_UNUSED, jclass klass) {
jboolean is_array_class = JNI_FALSE;
jvmtiError result = jvmti_env->IsArrayClass(klass, &is_array_class);
if (result != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(result, &err);
printf("Failure running IsArrayClass: %s\n", err);
return JNI_FALSE;
}
return is_array_class;
}
extern "C" JNIEXPORT jint JNICALL Java_Main_getClassModifiers(
JNIEnv* env ATTRIBUTE_UNUSED, jclass Main_klass ATTRIBUTE_UNUSED, jclass klass) {
jint mod;
jvmtiError result = jvmti_env->GetClassModifiers(klass, &mod);
if (result != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(result, &err);
printf("Failure running GetClassModifiers: %s\n", err);
return JNI_FALSE;
}
return mod;
}
extern "C" JNIEXPORT jobjectArray JNICALL Java_Main_getClassFields(
JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jclass klass) {
jint count = 0;
jfieldID* fields = nullptr;
jvmtiError result = jvmti_env->GetClassFields(klass, &count, &fields);
if (result != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(result, &err);
printf("Failure running GetClassFields: %s\n", err);
return nullptr;
}
auto callback = [&](jint i) {
jint modifiers;
// Ignore any errors for simplicity.
jvmti_env->GetFieldModifiers(klass, fields[i], &modifiers);
constexpr jint kStatic = 0x8;
return env->ToReflectedField(klass,
fields[i],
(modifiers & kStatic) != 0 ? JNI_TRUE : JNI_FALSE);
};
jobjectArray ret = CreateObjectArray(env, count, "java/lang/Object", callback);
if (fields != nullptr) {
jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(fields));
}
return ret;
}
extern "C" JNIEXPORT jobjectArray JNICALL Java_Main_getClassMethods(
JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jclass klass) {
jint count = 0;
jmethodID* methods = nullptr;
jvmtiError result = jvmti_env->GetClassMethods(klass, &count, &methods);
if (result != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(result, &err);
printf("Failure running GetClassMethods: %s\n", err);
return nullptr;
}
auto callback = [&](jint i) {
jint modifiers;
// Ignore any errors for simplicity.
jvmti_env->GetMethodModifiers(methods[i], &modifiers);
constexpr jint kStatic = 0x8;
return env->ToReflectedMethod(klass,
methods[i],
(modifiers & kStatic) != 0 ? JNI_TRUE : JNI_FALSE);
};
jobjectArray ret = CreateObjectArray(env, count, "java/lang/Object", callback);
if (methods != nullptr) {
jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(methods));
}
return ret;
}
extern "C" JNIEXPORT jobjectArray JNICALL Java_Main_getImplementedInterfaces(
JNIEnv* env, jclass Main_klass ATTRIBUTE_UNUSED, jclass klass) {
jint count = 0;
jclass* classes = nullptr;
jvmtiError result = jvmti_env->GetImplementedInterfaces(klass, &count, &classes);
if (result != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(result, &err);
printf("Failure running GetImplementedInterfaces: %s\n", err);
return nullptr;
}
auto callback = [&](jint i) {
return classes[i];
};
jobjectArray ret = CreateObjectArray(env, count, "java/lang/Class", callback);
if (classes != nullptr) {
jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(classes));
}
return ret;
}
extern "C" JNIEXPORT jint JNICALL Java_Main_getClassStatus(
JNIEnv* env ATTRIBUTE_UNUSED, jclass Main_klass ATTRIBUTE_UNUSED, jclass klass) {
jint status;
jvmtiError result = jvmti_env->GetClassStatus(klass, &status);
if (result != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(result, &err);
printf("Failure running GetClassStatus: %s\n", err);
return JNI_FALSE;
}
return status;
}
extern "C" JNIEXPORT jobject JNICALL Java_Main_getClassLoader(
JNIEnv* env ATTRIBUTE_UNUSED, jclass Main_klass ATTRIBUTE_UNUSED, jclass klass) {
jobject classloader;
jvmtiError result = jvmti_env->GetClassLoader(klass, &classloader);
if (result != JVMTI_ERROR_NONE) {
char* err;
jvmti_env->GetErrorName(result, &err);
printf("Failure running GetClassLoader: %s\n", err);
jvmti_env->Deallocate(reinterpret_cast<unsigned char*>(err));
return nullptr;
}
return classloader;
}
// Don't do anything
jint OnLoad(JavaVM* vm,
char* options ATTRIBUTE_UNUSED,
void* reserved ATTRIBUTE_UNUSED) {
if (vm->GetEnv(reinterpret_cast<void**>(&jvmti_env), JVMTI_VERSION_1_0)) {
printf("Unable to get jvmti env!\n");
return 1;
}
SetAllCapabilities(jvmti_env);
return 0;
}
} // namespace Test912Classes
} // namespace art
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