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refactor: use ResourcesLoader to inject module resources
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@cinit
cinit committed Mar 26, 2024
1 parent ff20f83 commit ea20b5e
Showing 1 changed file with 82 additions and 30 deletions.
112 changes: 82 additions & 30 deletions app/src/main/java/cc/ioctl/tmoe/lifecycle/Parasitics.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,20 +17,26 @@
import android.content.pm.PackageManager;
import android.content.res.AssetManager;
import android.content.res.Resources;
import android.content.res.loader.ResourcesLoader;
import android.content.res.loader.ResourcesProvider;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Looper;
import android.os.Message;
import android.os.ParcelFileDescriptor;
import android.os.PersistableBundle;
import android.os.TestLooperManager;
import android.view.KeyEvent;
import android.view.MotionEvent;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
Expand All @@ -42,6 +48,8 @@
import cc.ioctl.tmoe.startup.HookEntry;
import cc.ioctl.tmoe.util.HostInfo;
import cc.ioctl.tmoe.util.Initiator;
import cc.ioctl.tmoe.util.Log;
import cc.ioctl.tmoe.util.SyncUtils;

/**
* Inject module Activities into host process and resources injection.
Expand Down Expand Up @@ -71,7 +79,6 @@ public static int getActivityStubHookCost() {
return -1;
}

@SuppressLint("PrivateApi")
public static void injectModuleResources(Resources res) {
if (res == null) {
return;
Expand All @@ -81,48 +88,93 @@ public static void injectModuleResources(Resources res) {
return;
} catch (Resources.NotFoundException ignored) {
}
try {
String sModulePath = HookEntry.getModulePath();
if (sModulePath == null) {
throw new RuntimeException(
"get module path failed, loader=" + Parasitics.class.getClassLoader());
String sModulePath = HookEntry.getModulePath();
if (sModulePath == null) {
throw new RuntimeException("get module path failed, loader=" + Parasitics.class.getClassLoader());
}
// AssetsManager.addAssetPath starts to break on Android 12.
// ResourcesLoader is added since Android 11.
if (Build.VERSION.SDK_INT >= 30) {
injectResourcesAboveApi30(res, sModulePath);
} else {
injectResourcesBelowApi30(res, sModulePath);
}
}

@RequiresApi(30)
private static class ResourcesLoaderHolderApi30 {

private ResourcesLoaderHolderApi30() {
}

public static ResourcesLoader sResourcesLoader = null;

}

@RequiresApi(30)
private static void injectResourcesAboveApi30(@NonNull Resources res, @NonNull String path) {
if (ResourcesLoaderHolderApi30.sResourcesLoader == null) {
try (ParcelFileDescriptor pfd = ParcelFileDescriptor.open(new File(path),
ParcelFileDescriptor.MODE_READ_ONLY)) {
ResourcesProvider provider = ResourcesProvider.loadFromApk(pfd);
ResourcesLoader loader = new ResourcesLoader();
loader.addProvider(provider);
ResourcesLoaderHolderApi30.sResourcesLoader = loader;
} catch (IOException e) {
logForResourceInjectFailure(path, e, 0);
return;
}
}
SyncUtils.runOnUiThread(() -> {
res.addLoaders(ResourcesLoaderHolderApi30.sResourcesLoader);
try {
res.getString(R.string.res_inject_success);
if (sResInjectEndTime == 0) {
sResInjectEndTime = System.currentTimeMillis();
}
} catch (Resources.NotFoundException e) {
logForResourceInjectFailure(path, e, 0);
}
});
}

@SuppressWarnings("JavaReflectionMemberAccess")
@SuppressLint({"PrivateApi", "DiscouragedPrivateApi"})
private static void injectResourcesBelowApi30(@NonNull Resources res, @NonNull String path) {
try {
AssetManager assets = res.getAssets();
@SuppressLint("DiscouragedPrivateApi")
Method addAssetPath = AssetManager.class
.getDeclaredMethod("addAssetPath", String.class);
Method addAssetPath = AssetManager.class.getDeclaredMethod("addAssetPath", String.class);
addAssetPath.setAccessible(true);
int cookie = (int) addAssetPath.invoke(assets, sModulePath);
int cookie = (int) addAssetPath.invoke(assets, path);
try {
logd("injectModuleResources: " + res.getString(R.string.res_inject_success));
res.getString(R.string.res_inject_success);
if (sResInjectEndTime == 0) {
sResInjectEndTime = System.currentTimeMillis();
}
} catch (Resources.NotFoundException e) {
loge("Fatal: injectModuleResources: test injection failure!");
loge("injectModuleResources: cookie=" + cookie + ", path=" + sModulePath
+ ", loader=" + Parasitics.class.getClassLoader());
long length = -1;
boolean read = false;
boolean exist = false;
boolean isDir = false;
try {
File f = new File(sModulePath);
exist = f.exists();
isDir = f.isDirectory();
length = f.length();
read = f.canRead();
} catch (Throwable e2) {
loge(e2);
}
loge("sModulePath: exists = " + exist + ", isDirectory = " + isDir + ", canRead = "
+ read + ", fileLength = " + length);
logForResourceInjectFailure(path, e, 0);
}
} catch (Exception e) {
loge(e);
Log.e(e);
}
}

private static void logForResourceInjectFailure(@NonNull String path, @NonNull Throwable e, int cookie) {
Log.e("Fatal: injectModuleResources: test injection failure!");
Log.e("injectModuleResources: path=" + path + ", cookie=" + cookie +
", loader=" + Parasitics.class.getClassLoader());
long length = -1;
boolean read = false;
boolean exist = false;
boolean isDir = false;
File f = new File(path);
exist = f.exists();
isDir = f.isDirectory();
length = f.length();
read = f.canRead();
Log.e("sModulePath: exists = " + exist + ", isDirectory = " + isDir + ", canRead = " + read + ", fileLength = " + length);
}

@SuppressLint("PrivateApi")
public static void initForStubActivity(Context ctx) {
if (__stub_hooked) {
Expand Down

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