1 /*
2 * Copyright (C) 2023 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "derive_sdk"
18
19 #include <sstream>
20 #include "android-base/logging.h"
21 #include "derive_sdk.h"
22 #include "jni.h"
23
24 namespace android {
25 namespace derivesdk {
26
27 constexpr const char* DERIVE_SDK_CLASS_NAME = "com/android/os/ext/testing/DeriveSdk";
28
com_android_os_ext_testing_DeriveSdk_dump(JNIEnv * env)29 jstring com_android_os_ext_testing_DeriveSdk_dump(JNIEnv* env) {
30 std::stringstream stream;
31 PrintDump("/apex", stream);
32
33 return env->NewStringUTF(stream.str().c_str());
34 }
35
36 const JNINativeMethod methods[] = {
37 {"native_dump", "()Ljava/lang/String;",
38 reinterpret_cast<void*>(com_android_os_ext_testing_DeriveSdk_dump)},
39 };
40
register_com_android_os_ext_testing_DeriveSdk(JNIEnv * env)41 void register_com_android_os_ext_testing_DeriveSdk(JNIEnv* env) {
42 auto gDeriveSdkClass =
43 static_cast<jclass>(env->NewGlobalRef(env->FindClass(DERIVE_SDK_CLASS_NAME)));
44
45 if (gDeriveSdkClass == nullptr) {
46 LOG(FATAL) << "Unable to find class : " << DERIVE_SDK_CLASS_NAME;
47 }
48
49 if (env->RegisterNatives(gDeriveSdkClass, methods, sizeof(methods) / sizeof(methods[0])) < 0) {
50 LOG(FATAL) << "Unable to register native methods";
51 }
52 }
53 } // namespace derivesdk
54 } // namespace android
55
JNI_OnLoad(JavaVM * vm,void *)56 extern "C" jint JNI_OnLoad(JavaVM* vm, void* /* reserved */) {
57 JNIEnv* env;
58 if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
59 LOG(ERROR) << "ERROR: GetEnv failed";
60 return JNI_ERR;
61 }
62
63 android::derivesdk::register_com_android_os_ext_testing_DeriveSdk(env);
64
65 return JNI_VERSION_1_6;
66 }
67