Spoof app version dynamically

* As suggested in ElJaviLuki/GrindrPlus#55
R0rt1z2 · Dec 16, 2023 · ba81d86 · ba81d86
1 parent b7fefd6
commit ba81d86
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Showing 3 changed files with 48 additions and 3 deletions.
diff --git a/app/build.gradle b/app/build.gradle
@@ -52,4 +52,7 @@ dependencies {
 
     //AndroidX Core
     implementation 'androidx.core:core-ktx:1.8.0'
+
+    // OkHttp
+    implementation 'com.squareup.okhttp3:okhttp:4.9.0'
 }
diff --git a/app/src/main/java/com/grindrplus/Hooker.kt b/app/src/main/java/com/grindrplus/Hooker.kt
@@ -25,6 +25,7 @@ class Hooker : IXposedHookLoadPackage {
         pkgParam = lpparam
 
         try {
+            Logger.xLog("About to hook App Updates")
             Hooks.hookAppUpdates()
         } catch (e: Exception) {
             e.message?.let { Logger.xLog(it) }

diff --git a/app/src/main/java/com/grindrplus/Hooks.kt b/app/src/main/java/com/grindrplus/Hooks.kt
@@ -25,6 +25,12 @@ import de.robv.android.xposed.XC_MethodHook
 import de.robv.android.xposed.XC_MethodReplacement
 import de.robv.android.xposed.XposedBridge
 import de.robv.android.xposed.XposedHelpers.*
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.Call
+import okhttp3.Callback
+import okhttp3.Response
+import java.io.IOException
 import java.io.File
 import java.lang.reflect.Proxy
 import java.util.*
@@ -1066,6 +1072,41 @@ object Hooks {
      * and spoof the app version. Inspired by @Tebbe's idea.
      */
     fun hookAppUpdates() {
+        val client = OkHttpClient()
+        val request = Request.Builder()
+            .url("https://apkpure.com/grindr-gay-chat-for-android/com.grindrapp.android/download")
+            .addHeader("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0")
+            .build()
+
+        client.newCall(request).enqueue(object : Callback {
+            override fun onFailure(call: Call, e: IOException) {
+                Logger.xLog("Fetch failed: ${e.message}")
+            }
+
+            override fun onResponse(call: Call, response: Response) {
+                response.use {
+                    if (!response.isSuccessful)
+                        return Logger.xLog("Received unexpected response code: ${response.code}")
+
+                    val responseBody = response.body?.string() ?:
+                        return Logger.xLog("Unable to get body from response!")
+                    val versionName = """"versionName":"(.*?)",""".toRegex()
+                        .find(responseBody)?.groups?.get(1)?.value
+                    val versionCode = """"versionCode":(\d+),""".toRegex()
+                        .find(responseBody)?.groups?.get(1)?.value
+
+                    // If both are valid, spoof the app version to prevent the update dialog
+                    // from showing up. This should be enough to disable forced updates.
+                    if (versionName != null && versionCode != null) {
+                        hookUpdateInfo(versionName, versionCode.toInt())
+                    }
+                }
+            }
+        })
+    }
+
+    fun hookUpdateInfo(versionName: String, versionCode: Int) {
+        Logger.xLog("Hooking update info with version $versionName ($versionCode)")
         findAndHookMethod(
             "com.google.android.play.core.appupdate.AppUpdateInfo",
             Hooker.pkgParam.classLoader,
@@ -1084,9 +1125,9 @@ object Hooks {
             findClass("com.grindrapp.android.base.config.AppConfiguration.a", Hooker.pkgParam.classLoader),
             object : XC_MethodHook() {
                 override fun afterHookedMethod(param: MethodHookParam) {
-                    setObjectField(param.thisObject, "a", "9.17.4")
-                    setObjectField(param.thisObject, "b", 118992)
-                    setObjectField(param.thisObject, "u", "9.17.4.118992")
+                    setObjectField(param.thisObject, "a", versionName)
+                    setObjectField(param.thisObject, "b", versionCode)
+                    setObjectField(param.thisObject, "u", "$versionName.$versionCode")
                 }
             }
         )