Ensure existance of dg.db (c8763adf) · Commits · e / os / android_packages_apps_RemoteDroidGuard

app/src/main/java/org/microg/gms/droidguard/DroidGuardDatabase.java

0 → 100644

+30 −0

Original line number	Diff line number	Diff line
		/*
		* SPDX-FileCopyrightText: 2020, microG Project Team
		* SPDX-License-Identifier: Apache-2.0
		*/

		package org.microg.gms.droidguard;

		import android.content.Context;
		import android.database.sqlite.SQLiteDatabase;
		import android.database.sqlite.SQLiteOpenHelper;

		public class DroidGuardDatabase extends SQLiteOpenHelper {
		private static final String DB_NAME = "dg.db";

		public DroidGuardDatabase(Context context) {
		super(context, DB_NAME, null, 2);
		}

		@Override
		public void onCreate(SQLiteDatabase db) {
		// Note: "NON NULL" is actually not a valid sqlite constraint, but this is what we see in the original database shrug
		db.execSQL("CREATE TABLE main (a TEXT NOT NULL, b LONG NOT NULL, c LONG NOT NULL, d TEXT NON NULL, e TEXT NON NULL,f BLOB NOT NULL,g BLOB NOT NULL);");
		}

		@Override
		public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
		db.execSQL("DROP TABLE IF EXISTS main;");
		onCreate(db);
		}
		}

app/src/main/java/org/microg/gms/droidguard/DroidguardHelper.java→app/src/main/java/org/microg/gms/droidguard/DroidGuardHelper.java

+20 −17

Original line number	Diff line number	Diff line
		@@ -8,9 +8,9 @@ package org.microg.gms.droidguard;
		import android.content.Context;
		import android.os.Build;
		import android.os.Bundle;
		import android.text.TextUtils;
		import android.util.Base64;
		import android.util.Log;
		import android.text.TextUtils;

		import com.squareup.wire.Wire;

		@@ -41,8 +41,8 @@ import java.util.zip.ZipFile;
		import dalvik.system.DexClassLoader;
		import okio.ByteString;

		public class DroidguardHelper {
		private static final String TAG = "GmsDroidguardHelper";
		public class DroidGuardHelper {
		private static final String TAG = "GmsDroidGuardHelper";
		private static final String DG_CLASS_NAME = "com.google.ccc.abuse.droidguard.DroidGuard";
		private static final String DG_URL = "https://www.googleapis.com/androidantiabuse/v1/x/create?alt=PROTO&key=AIzaSyBofcZsgLSS7BOnBjZPEkk4rYwzOIz-lTI";
		private static Map<String, Class<?>> loadedClass = new HashMap<>();
		@@ -50,6 +50,9 @@ public class DroidguardHelper {
		public static byte[] guard(Context context, RemoteDroidGuardRequest request) throws Exception {
		int versionCode = context.getPackageManager().getPackageInfo(Constants.GMS_PACKAGE_NAME, 0).versionCode;

		// Ensure database exists
		new DroidGuardDatabase(context).getReadableDatabase().close();

		SignedDGResponse signedResponse = request(new DGRequest.Builder()
		.usage(new DGUsage(request.reason, request.packageName))
		.info(getSystemInfo(null))
		@@ -101,8 +104,8 @@ public class DroidguardHelper {
		versionCode /= 1000;
		patch = versionCode % 100;
		versionCode /= 100;
		minor = versionCode % 10;
		versionCode /= 10;
		minor = versionCode % 100;
		versionCode /= 100;
		String versionPrefix = versionCode + "." + minor + "." + patch;
		switch (arch) {
		case "arm64-v8a":
		@@ -341,7 +344,7 @@ public class DroidguardHelper {
		}

		public final String a(final byte[] array) {
		String guasso = new String(DroidguassoHelper.guasso(array));
		String guasso = new String(DroidGuassoHelper.guasso(array));
		Log.d(TAG, "a: " + Base64.encodeToString(array, Base64.NO_WRAP) + " -> " + guasso);
		return guasso;
		}

app/src/main/java/org/microg/gms/droidguard/DroidguassoHelper.java→app/src/main/java/org/microg/gms/droidguard/DroidGuassoHelper.java

+36 −12

Original line number	Diff line number	Diff line
		@@ -20,18 +20,27 @@ import java.util.List;

		import okio.ByteString;

		public class DroidguassoHelper {
		private static final String TAG = "GmsDroidguassoHelper";
		/**
		* DroidGuasso helper class. It hashes some files up to a size of 1024 bytes and feeds them with a digest into DroidGuasso
		*/
		public class DroidGuassoHelper {
		private static final String TAG = "GmsDroidGuassoHelper";

		private char[] HEX_CHARS = new char[]{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};

		/**
		* Makes a call to DroidGuasso.
		*
		* @param digest A digest array to feed into DroidGuasso
		* @return DroidGuasso output data to further process
		*/
		public static byte[] guasso(byte[] digest) {
		List<String> substrs = new ArrayList<>();
		addFilesInPath("/vendor/lib/egl", substrs);
		addFilesInPath("/system/lib/egl", substrs);
		addFilesInPath("/vendor/lib/egl", substrs); //Hashing all EGL libs in /vendor
		addFilesInPath("/system/lib/egl", substrs); //Hashing all EGL libs in /system
		Collections.sort(substrs);
		substrs.add(initialBytesDigest(new File("/system/lib/egl/egl.cfg")));
		String eglInfo = hexDigest(substrs.toString().getBytes());
		substrs.add(initialBytesDigest(new File("/system/lib/egl/egl.cfg"))); //Hashing the EGL config
		String eglInfo = hexDigest(substrs.toString().getBytes()); //SHA-1 hashing the toString() of an object?


		float[] floats = new float[]{0.35502917f, 0.47196686f, 0.24689609f, 0.66850024f, 0.7746259f, 0.5967446f, 0.06270856f, 0.19201201f, 0.35090452f, 0.5573558f, 0.470259f, 0.9866341f};
		@@ -48,6 +57,12 @@ public class DroidguassoHelper {
		return ("5=" + eglInfo + "\n7=" + dg.getGpu() + "\n8=" + dg.getHash1() + "\n9=" + dg.getHash2() + "\n").getBytes();
		}

		/**
		* SHA-1 hashes file contents. Max size is 1024 bytes.
		*
		* @param file A file object which contents to hash
		* @return Returns the hash
		*/
		private static String initialBytesDigest(File file) {
		try {
		FileInputStream is = new FileInputStream(file);
		@@ -60,6 +75,12 @@ public class DroidguassoHelper {
		}
		}

		/**
		* SHA-1 hashes an byte array
		*
		* @param bytes Bytes to hash
		* @return Returns the hash
		*/
		private static String hexDigest(byte[] bytes) {
		try {
		return ByteString.of(MessageDigest.getInstance("SHA-1").digest(bytes)).hex();
		@@ -68,15 +89,18 @@ public class DroidguassoHelper {
		}
		}

		/**
		* Finds ".so" files in a directory and adds their SHA-1 hashed content to a given {@link List} object.
		* Representation in the list as follows:
		* {@literal <filename>/<file_length>/<contents_hash>}
		*
		* @param path the parent directory to search for ".so" files
		* @param list the list to add the
		*/
		private static void addFilesInPath(String path, List list) {
		final File parent = new File(path);
		if (parent.isDirectory()) {
		final File[] listFiles = parent.listFiles(new FilenameFilter() {
		@Override
		public boolean accept(File dir, String filename) {
		return filename.endsWith(".so");
		}
		});
		final File[] listFiles = parent.listFiles((dir, filename) -> filename.endsWith(".so"));
		for (File file : listFiles) {
		list.add(file.getName() + "/" + file.length() + "/" + initialBytesDigest(file));
		}

app/src/main/java/org/microg/gms/droidguard/RemoteDroidGuardService.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -25,7 +25,7 @@ public class RemoteDroidGuardService extends Service {
		@Override
		public void run() {
		try {
		callback.onResult(DroidguardHelper.guard(RemoteDroidGuardService.this, request));
		callback.onResult(DroidGuardHelper.guard(RemoteDroidGuardService.this, request));
		} catch (Exception e) {
		Log.w(TAG, e);
		try {