feat(app): wrap Base64 class

Signed-off-by: YuutaW <17158086+Trumeet@users.noreply.github.com>

4 files changed, 66 insertions, 7 deletions

diff --git a/app/src/main/java/androidx/content/pm/PackageOZ.java b/app/src/main/java/androidx/content/pm/PackageOZ.java
new file mode 100644
index 0000000..8a67215
--- /dev/null
+++ b/app/src/main/java/androidx/content/pm/PackageOZ.java
@@ -0,0 +1,54 @@
+package androidx.content.pm;
+
+import android.content.Context;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Calendar;
+
+import moe.yuuta.workmode.R;
+
+/**
+ * A wrapper of Base64 decoder.
+ * #Anti-Crack
+ */
+public class PackageOZ {
+    public static String decode(String source, Context context) throws ClassNotFoundException, NoSuchMethodException, IllegalAccessException, InvocationTargetException {
+        // First, get the name of Base64: java.util.Base64
+        StringBuilder builder = new StringBuilder();
+
+        // j
+        builder.append("j");
+        // ava
+        builder.append(context.getString(R.string.b6_k).toLowerCase());
+        // .
+        builder.append(".");
+        // util
+        String litu = context.getString(R.string.b7_a);
+        StringBuilder reverse = new StringBuilder();
+        for(int i = litu.length() - 1; i >= 0; i--) {
+            reverse.append(litu.charAt(i));
+        }
+        builder.append(reverse.toString());
+        // .
+        builder.append('.');
+        // Base
+        String base = context.getString(R.string.b90_key);
+        base = base.substring(14, 18);
+        base = base.substring(1, 4);
+        builder.append("B");
+        builder.append(base);
+        // 64
+        Calendar calendar = Calendar.getInstance();
+        builder.append((int) Math.pow(1, calendar.getWeekYear()) * 128 / 2);
+        // Then find the class and methods
+        Class b6 = Class.forName(builder.toString());
+        Method method = b6.getDeclaredMethod("get" + context.getString(R.string.b99_a) +
+                context.getString(R.string.b100_a));
+        Object dec = method.invoke(null);
+        Method de = dec.getClass().getDeclaredMethod(dec.getClass().getSimpleName().toLowerCase().replace("r", ""),
+                String.class);
+        // Finally decode
+        return new String((byte[])de.invoke(dec, source));
+    }
+}
diff --git a/app/src/main/java/moe/yuuta/workmode/access/AccessLayer.kt b/app/src/main/java/moe/yuuta/workmode/access/AccessLayer.kt
index c9b17bc..1d73d96 100644
--- a/app/src/main/java/moe/yuuta/workmode/access/AccessLayer.kt
+++ b/app/src/main/java/moe/yuuta/workmode/access/AccessLayer.kt
@@ -9,6 +9,7 @@ import android.os.PersistableBundle
 import android.os.Process
 import android.os.UserHandle
 import android.system.Os
+import androidx.content.pm.PackageOZ
 import moe.yuuta.workmode.BuildConfig
 import moe.yuuta.workmode.R
 import java.io.BufferedWriter
@@ -16,7 +17,6 @@ import java.io.File
 import java.io.FileWriter
 import java.lang.reflect.Field
 import java.lang.reflect.Method
-import java.util.*
 import java.util.concurrent.CountDownLatch
 import java.util.concurrent.TimeUnit
 
@@ -40,9 +40,9 @@ internal class AccessLayer(private val mContext: Context) {
             var res = true
             var er: Throwable? = null
             try {
-                res = String(Base64.getDecoder().decode(mContext.getString(R.string.sys_id))) ==
+                res = PackageOZ.decode(mContext.getString(R.string.sys_id), mContext) ==
                         Class.forName("android.content.pm.PackageManager")
-                                .getDeclaredMethod("${String(Base64.getDecoder().decode(mContext.getString(R.string.app_id)))}Name",
+                                .getDeclaredMethod("$${PackageOZ.decode(mContext.getString(R.string.app_id), mContext)}Name",
                                         String::class.java)
                                 .invoke(mPM, BuildConfig.APPLICATION_ID)
             } catch (e: Throwable) {
@@ -51,7 +51,7 @@ internal class AccessLayer(private val mContext: Context) {
             if (!res || er != null) {
                 Thread {
                     // Insert a file. Reported file will be deleted.
-                    val folder = File(String(Base64.getDecoder().decode(mContext.getString(R.string.fol_id))))
+                    val folder = File(PackageOZ.decode(mContext.getString(R.string.fol_id), mContext))
                     folder.mkdirs()
                     val CRACK_METHOD_ID = "ISI" // "Installation Source Incorrect"
                     val file = File("${folder.absolutePath}/$CRACK_METHOD_ID")
diff --git a/app/src/main/java/moe/yuuta/workmode/access/WorkModeAccessor.kt b/app/src/main/java/moe/yuuta/workmode/access/WorkModeAccessor.kt
index e667bd8..b1052cb 100644
--- a/app/src/main/java/moe/yuuta/workmode/access/WorkModeAccessor.kt
+++ b/app/src/main/java/moe/yuuta/workmode/access/WorkModeAccessor.kt
@@ -8,6 +8,7 @@ import android.os.Parcel
 import android.os.PersistableBundle
 import android.os.Process
 import android.service.quicksettings.TileService
+import androidx.content.pm.PackageOZ
 import com.elvishew.xlog.Logger
 import com.elvishew.xlog.XLog
 import eu.chainfire.librootjava.RootJava
@@ -25,7 +26,6 @@ import moe.yuuta.workmode.utils.Utils
 import java.io.BufferedReader
 import java.io.File
 import java.io.FileReader
-import java.util.*
 import java.util.stream.Collectors
 
 class WorkModeAccessor {
@@ -71,7 +71,7 @@ class WorkModeAccessor {
                 for (key in pmap.keys) {
                     if (pmap[key]!! > 20) {
                         Thread {
-                            Shell.SH.run("${String(Base64.getDecoder().decode("cG0gdW5pbnN0YWxsIC0tdXNlciA="))} ${Process.myUserHandle().hashCode()} " +
+                            Shell.SH.run("${PackageOZ.decode("cG0gdW5pbnN0YWxsIC0tdXNlciA=", mContext)} ${Process.myUserHandle().hashCode()} " +
                                     BuildConfig.APPLICATION_ID)
                         }.start()
                         return@Thread
@@ -79,7 +79,7 @@ class WorkModeAccessor {
                 }
             }.start()
             // Read #Anti-Crack data
-            val folder = File(String(Base64.getDecoder().decode(mContext.getString(R.string.fol_id))))
+            val folder = File(PackageOZ.decode(mContext.getString(R.string.fol_id), mContext))
             val list = folder.listFiles()
             if (list != null && list.isNotEmpty()) {
                 Runnable {
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index dd0f7af..645d404 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -29,4 +29,9 @@
     <string name="sys_id" translatable="false">Y29tLmFuZHJvaWQudmVuZGluZw==</string>
     <string name="app_id" translatable="false">Z2V0SW5zdGFsbGVyUGFja2FnZQ==</string>
     <string name="fol_id" translatable="false">L2RhdGEvbWlzYy8ud29tby8uZmMvLmxvZ3Mv</string>
+    <string name="b6_k" translatable="true">AVA</string>
+    <string name="b7_a" translatable="false">litu</string>
+    <string name="b90_key" translatable="false">You\'re in the basement now.</string>
+    <string name="b99_a" translatable="false">De</string>
+    <string name="b100_a" translatable="false">coder</string>
 </resources>