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/*
* Copyright (C) 2019 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 "nativeloader/native_loader.h"
#define LOG_TAG "nativeloader"
#include <dlfcn.h>
#include <errno.h>
#include <string.h>
#include <log/log.h>
namespace android {
namespace {
void* GetLibHandle() {
static void* handle = dlopen("libnativeloader.so", RTLD_NOW);
LOG_FATAL_IF(handle == nullptr, "Failed to load libnativeloader.so: %s", dlerror());
return handle;
}
template <typename FuncPtr>
FuncPtr GetFuncPtr(const char* function_name) {
auto f = reinterpret_cast<FuncPtr>(dlsym(GetLibHandle(), function_name));
LOG_FATAL_IF(f == nullptr, "Failed to get address of %s: %s", function_name, dlerror());
return f;
}
#define GET_FUNC_PTR(name) GetFuncPtr<decltype(&(name))>(#name)
} // namespace
void InitializeNativeLoader() {
static auto f = GET_FUNC_PTR(InitializeNativeLoader);
return f();
}
jstring CreateClassLoaderNamespace(JNIEnv* env, int32_t target_sdk_version, jobject class_loader,
bool is_shared, jstring dex_path, jstring library_path,
jstring permitted_path) {
static auto f = GET_FUNC_PTR(CreateClassLoaderNamespace);
return f(env, target_sdk_version, class_loader, is_shared, dex_path, library_path,
permitted_path);
}
void* OpenNativeLibrary(JNIEnv* env, int32_t target_sdk_version, const char* path,
jobject class_loader, const char* caller_location, jstring library_path,
bool* needs_native_bridge, char** error_msg) {
static auto f = GET_FUNC_PTR(OpenNativeLibrary);
return f(env, target_sdk_version, path, class_loader, caller_location, library_path,
needs_native_bridge, error_msg);
}
bool CloseNativeLibrary(void* handle, const bool needs_native_bridge, char** error_msg) {
static auto f = GET_FUNC_PTR(CloseNativeLibrary);
return f(handle, needs_native_bridge, error_msg);
}
void NativeLoaderFreeErrorMessage(char* msg) {
static auto f = GET_FUNC_PTR(NativeLoaderFreeErrorMessage);
return f(msg);
}
struct android_namespace_t* FindNamespaceByClassLoader(JNIEnv* env, jobject class_loader) {
static auto f = GET_FUNC_PTR(FindNamespaceByClassLoader);
return f(env, class_loader);
}
struct NativeLoaderNamespace* FindNativeLoaderNamespaceByClassLoader(JNIEnv* env,
jobject class_loader) {
static auto f = GET_FUNC_PTR(FindNativeLoaderNamespaceByClassLoader);
return f(env, class_loader);
}
void* OpenNativeLibraryInNamespace(struct NativeLoaderNamespace* ns, const char* path,
bool* needs_native_bridge, char** error_msg) {
static auto f = GET_FUNC_PTR(OpenNativeLibraryInNamespace);
return f(ns, path, needs_native_bridge, error_msg);
}
void ResetNativeLoader() {
static auto f = GET_FUNC_PTR(ResetNativeLoader);
return f();
}
#undef GET_FUNC_PTR
} // namespace android
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