YukiHookAPI/yukihookapi/src/api/kotlin/me/weishu/reflection/BootstrapClass.java

/*
 * YukiHookAPI - An efficient Kotlin version of the Xposed Hook API.
 * Copyright (C) 2019-2022 HighCapable
 * https://github.com/fankes/YukiHookAPI
 *
 * MIT License
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * This file is Created by weishu on 2020/7/13.
 * This file is Forked from https://github.com/tiann/FreeReflection
 */
package me.weishu.reflection;

import static android.os.Build.VERSION.SDK_INT;

import android.os.Build;
import android.util.Log;

import androidx.annotation.Keep;

import java.lang.reflect.Method;

/**
 * NO ANNOTATION
 */
@SuppressWarnings("unused")
@Keep
public final class BootstrapClass {

    private static final String TAG = "BootstrapClass";

    private static Object sVmRuntime;
    private static Method setHiddenApiExemptions;

    static {
        if (SDK_INT >= Build.VERSION_CODES.P) {
            try {
                Method forName = Class.class.getDeclaredMethod("forName", String.class);
                Method getDeclaredMethod = Class.class.getDeclaredMethod("getDeclaredMethod", String.class, Class[].class);

                Class<?> vmRuntimeClass = (Class<?>) forName.invoke(null, "dalvik.system.VMRuntime");
                Method getRuntime = (Method) getDeclaredMethod.invoke(vmRuntimeClass, "getRuntime", null);
                setHiddenApiExemptions = (Method) getDeclaredMethod.invoke(vmRuntimeClass, "setHiddenApiExemptions", new Class[]{String[].class});
                sVmRuntime = getRuntime.invoke(null);
            } catch (Throwable e) {
                Log.w(TAG, "reflect bootstrap failed:", e);
            }
        }
    }

    /**
     * make the method exempted from hidden API check.
     *
     * @param method the method signature prefix.
     * @return true if success.
     */
    public static boolean exempt(String method) {
        return exempt(new String[]{method});
    }

    /**
     * make specific methods exempted from hidden API check.
     *
     * @param methods the method signature prefix, such as "Ldalvik/system", "Landroid" or even "L"
     * @return true if success
     */
    public static boolean exempt(String... methods) {
        if (sVmRuntime == null || setHiddenApiExemptions == null) {
            return false;
        }

        try {
            setHiddenApiExemptions.invoke(sVmRuntime, new Object[]{methods});
            return true;
        } catch (Throwable e) {
            return false;
        }
    }

    /**
     * Make all hidden API exempted.
     *
     * @return true if success.
     */
    public static boolean exemptAll() {
        return exempt(new String[]{"L"});
    }
}