/*
 * 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 2018/6/7.
 * This file is Forked from https://github.com/tiann/FreeReflection
 */
package me.weishu.reflection;

import static android.os.Build.VERSION.SDK_INT;
import static me.weishu.reflection.BootstrapClass.exemptAll;

import android.content.Context;
import android.text.TextUtils;
import android.util.Base64;

import androidx.annotation.Keep;

import java.io.File;
import java.io.FileOutputStream;
import java.lang.reflect.Method;

import dalvik.system.DexFile;

/**
 * NO ANNOTATION
 */
@SuppressWarnings("unused")
@Keep
public class Reflection {
    private static final String TAG = "Reflection";

    private static final String DEX = "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";

    private static native int unsealNative(int targetSdkVersion);

    /**
     * Begin
     *
     * @param context The Base Context
     * @return int
     */
    public static int unseal(Context context) {
        if (SDK_INT < 28) {
            // Below Android P, ignore
            return 0;
        }

        // try exempt API first.
        if (exemptAll()) {
            return 0;
        }
        if (unsealByDexFile(context)) {
            return 0;
        }

        return -1;
    }

    @SuppressWarnings({"deprecation", "ResultOfMethodCallIgnored"})
    private static boolean unsealByDexFile(Context context) {
        byte[] bytes = Base64.decode(DEX, Base64.NO_WRAP);
        File codeCacheDir = getCodeCacheDir(context);
        if (codeCacheDir == null) {
            return false;
        }
        File code = new File(codeCacheDir, System.currentTimeMillis() + ".dex");
        try {

            try (FileOutputStream fos = new FileOutputStream(code)) {
                fos.write(bytes);
            }

            DexFile dexFile = new DexFile(code);
            // This class is hardcoded in the dex, Don't use BootstrapClass.class to reference it
            // it maybe obfuscated!!
            Class<?> bootstrapClass = dexFile.loadClass("me.weishu.reflection.BootstrapClass", null);
            Method exemptAll = bootstrapClass.getDeclaredMethod("exemptAll");
            return (boolean) exemptAll.invoke(null);
        } catch (Throwable e) {
            e.printStackTrace();
            return false;
        } finally {
            if (code.exists()) {
                code.delete();
            }
        }
    }

    private static File getCodeCacheDir(Context context) {
        if (context != null) {
            return context.getCodeCacheDir();
        }
        String tmpDir = System.getProperty("java.io.tmpdir");
        if (TextUtils.isEmpty(tmpDir)) {
            return null;
        }
        File tmp = new File(tmpDir);
        if (!tmp.exists()) {
            return null;
        }
        return tmp;
    }
}
