ui: distinguish play store installs at runtime

This lets us use the same build for both F-Droid and Play Store.

Signed-off-by: Jason A. Donenfeld <[email protected]>

Author: zx2c4

ui/build.gradle

@@ -48,9 +48,6 @@ android {
         }
     }
     buildTypes {
-        all {
-            buildConfigField('boolean', 'IS_GOOGLE_PLAY', (findProperty('build.google_play') == 'true').toString())
-        }
         release {
             if (keystorePropertiesFile.exists()) signingConfig signingConfigs.release
             minifyEnabled true

ui/src/main/java/com/wireguard/android/preference/DonatePreference.kt

@@ -9,10 +9,10 @@ import android.app.AlertDialog
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
+import android.os.Build
 import android.util.AttributeSet
 import android.widget.Toast
 import androidx.preference.Preference
-import com.wireguard.android.BuildConfig
 import com.wireguard.android.R
 
 class DonatePreference(context: Context, attrs: AttributeSet?) : Preference(context, attrs) {
@@ -21,13 +21,28 @@ class DonatePreference(context: Context, attrs: AttributeSet?) : Preference(cont
     override fun getTitle() = context.getString(R.string.donate_title)
 
     override fun onClick() {
-        if (BuildConfig.IS_GOOGLE_PLAY) {
+        val installer = try {
+            val packageName = context.packageName
+            val pm = context.packageManager
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+                pm.getInstallSourceInfo(packageName).installingPackageName
+            } else {
+                @Suppress("DEPRECATION")
+                pm.getInstallerPackageName(packageName)
+            }
+        } catch (_: Throwable) {
+            ""
+        }
+
+        /* Google Play store forbids links to our donation page. */
+        if (installer == "com.android.vending") {
             AlertDialog.Builder(context)
                 .setTitle(R.string.donate_title)
                 .setMessage(R.string.donate_google_play_disappointment)
                 .show()
             return
         }
+
         val intent = Intent(Intent.ACTION_VIEW)
         intent.data = Uri.parse("https://www.wireguard.com/donations/")
         try {