Only show SafetyNet when GMS exists

app/shared/src/main/java/com/topjohnwu/magisk/net/Networking.java

@@ -47,10 +47,9 @@ public class Networking {
         } catch (Exception e) {
             if (Build.VERSION.SDK_INT < 21) {
                 // Failed to update SSL provider, use NoSSLv3SocketFactory on SDK < 21
-                // and return false to notify potential issues
                 HttpsURLConnection.setDefaultSSLSocketFactory(new NoSSLv3SocketFactory());
-                return false;
             }
+            return false;
         }
         return true;
     }

app/src/main/java/com/topjohnwu/magisk/core/Info.kt

@@ -18,11 +18,9 @@ object Info {
 
     val envRef = CachedValue { loadState() }
 
-    @JvmStatic
-    val env by envRef              // Local
+    @JvmStatic val env by envRef              // Local
+    @JvmStatic var stub: DynAPK.Data? = null  // Stub
     var remote = UpdateInfo()      // Remote
-    @JvmStatic
-    var stub: DynAPK.Data? = null  // Stub
 
     // Toggle-able options
     @JvmStatic var keepVerity = false
@@ -33,6 +31,7 @@ object Info {
     @JvmStatic var isSAR = false
     @JvmStatic var isAB = false
     @JvmStatic var ramdisk = false
+    @JvmStatic var hasGMS = true
 
     val isConnected by lazy {
         ObservableBoolean(false).also { field ->

app/src/main/java/com/topjohnwu/magisk/di/NetworkingModule.kt

@@ -1,8 +1,10 @@
 package com.topjohnwu.magisk.di
 
 import android.content.Context
+import android.os.Build
 import com.squareup.moshi.Moshi
 import com.topjohnwu.magisk.core.Const
+import com.topjohnwu.magisk.core.Info
 import com.topjohnwu.magisk.data.network.GithubApiServices
 import com.topjohnwu.magisk.data.network.GithubRawServices
 import com.topjohnwu.magisk.net.Networking
@@ -40,7 +42,9 @@ fun createOkHttpClient(context: Context): OkHttpClient {
 //    builder.addInterceptor(httpLoggingInterceptor)
 
     if (!Networking.init(context)) {
-        builder.sslSocketFactory(NoSSLv3SocketFactory())
+        Info.hasGMS = false
+        if (Build.VERSION.SDK_INT < 21)
+            builder.sslSocketFactory(NoSSLv3SocketFactory())
     }
 
     val doh = DnsOverHttps.Builder().client(builder.build())

app/src/main/java/com/topjohnwu/magisk/ui/home/HomeViewModel.kt

@@ -46,7 +46,7 @@ class HomeViewModel(
 
     @get:Bindable
     var stateMagisk = MagiskState.LOADING
-        set(value) = set(value, field, { field = it }, BR.stateMagisk)
+        set(value) = set(value, field, { field = it }, BR.stateMagisk, BR.showUninstall)
 
     @get:Bindable
     var stateManager = MagiskState.LOADING
@@ -73,6 +73,10 @@ class HomeViewModel(
     var stateManagerProgress = 0
         set(value) = set(value, field, { field = it }, BR.stateManagerProgress)
 
+    @get:Bindable
+    val showUninstall get() =
+        Info.env.magiskVersionCode > 0 && stateMagisk != MagiskState.LOADING && isConnected.get()
+
     val items = listOf(DeveloperItem.Mainline, DeveloperItem.App, DeveloperItem.Project)
     val itemBinding = itemBindingOf<HomeItem> {
         it.bindExtra(BR.viewModel, this)
@@ -92,6 +96,7 @@ class HomeViewModel(
     }
 
     override fun refresh() = viewModelScope.launch {
+        notifyPropertyChanged(BR.showUninstall)
         repoMagisk.fetchUpdate()?.apply {
             stateMagisk = when {
                 !Info.env.isActive -> MagiskState.NOT_INSTALLED

app/src/main/res/layout/fragment_home_md2.xml

@@ -103,17 +103,22 @@
                 android:layout_marginTop="@dimen/l1"
                 app:layout_constraintTop_toBottomOf="@+id/home_magisk_wrapper" />
 
+            <Space
+                android:layout_width="match_parent"
+                android:layout_height="@dimen/l1"
+                gone="@{!Info.hasGMS &amp;&amp; !viewModel.showUninstall}" />
+
             <com.google.android.material.button.MaterialButton
                 style="@style/WidgetFoundation.Button.Outlined"
                 android:layout_marginStart="@dimen/l1"
                 android:layout_marginEnd="@dimen/l1"
-                android:layout_marginTop="@dimen/l1"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:text="@string/home_check_safetynet"
                 android:textAllCaps="false"
                 android:textSize="12sp"
                 android:onClick="@{() -> viewModel.onSafetyNetPressed()}"
+                gone="@{!Info.hasGMS}"
                 app:cornerRadius="@dimen/r1"
                 app:icon="@drawable/ic_safetynet_md2" />
 
@@ -121,14 +126,13 @@
                 style="@style/WidgetFoundation.Button.Outlined.Error"
                 android:layout_marginStart="@dimen/l1"
                 android:layout_marginEnd="@dimen/l1"
-                android:layout_marginTop="@dimen/l_125"
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:text="@string/uninstall_magisk_title"
                 android:textAllCaps="false"
                 android:textSize="12sp"
                 android:onClick="@{() -> viewModel.onDeletePressed()}"
-                gone="@{Info.env.magiskVersionCode &lt; 0 || viewModel.stateMagisk == MagiskState.LOADING || !viewModel.isConnected}"
+                gone="@{!viewModel.showUninstall}"
                 app:cornerRadius="@dimen/r1"
                 app:icon="@drawable/ic_delete_md2" />