mirror of https://github.com/topjohnwu/Magisk
123 lines
4.2 KiB
Java
123 lines
4.2 KiB
Java
package com.topjohnwu.magisk;
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import android.app.AppComponentFactory;
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import android.app.Application;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.content.ContextWrapper;
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import android.content.pm.ApplicationInfo;
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import android.content.pm.PackageManager;
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import android.net.Uri;
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import android.os.Build;
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import android.util.Log;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.lang.reflect.Field;
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import io.michaelrocks.paranoid.Obfuscate;
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@Obfuscate
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public class InjectAPK {
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static Object componentFactory;
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private static DelegateComponentFactory getComponentFactory() {
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return (DelegateComponentFactory) componentFactory;
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}
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@SuppressWarnings("ResultOfMethodCallIgnored")
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static Application setup(Context context) {
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// Get ContextImpl
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while (context instanceof ContextWrapper) {
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context = ((ContextWrapper) context).getBaseContext();
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}
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File apk = DynAPK.current(context);
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File update = DynAPK.update(context);
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if (update.exists())
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update.renameTo(apk);
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if (!apk.exists()) {
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// Try copying APK
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Uri uri = new Uri.Builder().scheme("content")
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.authority("com.topjohnwu.magisk.provider")
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.encodedPath("apk_file").build();
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ContentResolver resolver = context.getContentResolver();
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try (InputStream src = resolver.openInputStream(uri)) {
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if (src != null) {
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try (OutputStream out = new FileOutputStream(apk)) {
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byte[] buf = new byte[4096];
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for (int read; (read = src.read(buf)) >= 0;) {
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out.write(buf, 0, read);
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}
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}
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}
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} catch (Exception ignored) {}
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}
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if (apk.exists()) {
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ClassLoader cl = new InjectedClassLoader(apk);
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PackageManager pm = context.getPackageManager();
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ApplicationInfo info = pm.getPackageArchiveInfo(apk.getPath(), 0).applicationInfo;
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try {
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// Create the receiver Application
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Object app = cl.loadClass(info.className)
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.getConstructor(Object.class)
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.newInstance(DynAPK.pack(dynData()));
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// Create the receiver component factory
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Object factory = null;
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if (Build.VERSION.SDK_INT >= 28) {
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factory = cl.loadClass(info.appComponentFactory).newInstance();
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}
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setClassLoader(context, cl);
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// Finally, set variables
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if (Build.VERSION.SDK_INT >= 28) {
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getComponentFactory().loader = cl;
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getComponentFactory().receiver = (AppComponentFactory) factory;
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}
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return (Application) app;
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} catch (Exception e) {
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Log.e(InjectAPK.class.getSimpleName(), "", e);
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apk.delete();
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}
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// fallthrough
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}
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ClassLoader cl = new RedirectClassLoader();
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try {
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setClassLoader(context, cl);
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if (Build.VERSION.SDK_INT >= 28) {
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getComponentFactory().loader = cl;
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}
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} catch (Exception e) {
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Log.e(InjectAPK.class.getSimpleName(), "", e);
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}
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return null;
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}
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// Replace LoadedApk mClassLoader
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private static void setClassLoader(Context impl, ClassLoader cl)
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throws NoSuchFieldException, IllegalAccessException {
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Field mInfo = impl.getClass().getDeclaredField("mPackageInfo");
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mInfo.setAccessible(true);
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Object loadedApk = mInfo.get(impl);
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Field mcl = loadedApk.getClass().getDeclaredField("mClassLoader");
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mcl.setAccessible(true);
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mcl.set(loadedApk, cl);
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}
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private static DynAPK.Data dynData() {
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DynAPK.Data data = new DynAPK.Data();
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data.version = BuildConfig.STUB_VERSION;
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data.classToComponent = Mapping.inverseMap;
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return data;
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}
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}
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