From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Dmitry Muhomor <muhomor.dmitry@gmail.com>
Date: Fri, 10 Feb 2023 12:44:30 +0200
Subject: [PATCH] add a toggle for forcibly disabling SUPL

---
 res/values/strings.xml                        |  3 ++
 res/xml/location_settings.xml                 |  6 +++
 .../ForceDisableSuplPrefController.java       | 41 +++++++++++++++++++
 3 files changed, 50 insertions(+)
 create mode 100644 src/com/android/settings/location/ForceDisableSuplPrefController.java

diff --git a/res/values/strings.xml b/res/values/strings.xml
index 50803304ac..c597570f35 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -12297,4 +12297,7 @@
 
     <string name="connectivity_check_title">Internet connectivity check</string>
     <string name="connectivity_check_summary">HTTP endpoints to use for performing internet connectivity checks.</string>
+
+    <string name="force_disable_supl_title">Force disable Secure User Plane Location (SUPL)</string>
+    <string name="force_disable_supl_summary">Always disable SUPL assisted location support regardless of carrier configuration or emergency call status (does not disable control plane A-GNSS and DivestOS does not send IMSI to the SUPL)</string>
 </resources>
diff --git a/res/xml/location_settings.xml b/res/xml/location_settings.xml
index fb03f4c7f3..a66df8fea6 100644
--- a/res/xml/location_settings.xml
+++ b/res/xml/location_settings.xml
@@ -77,6 +77,12 @@
             settings:forWork="true"
             settings:controller="com.android.settings.location.LocationServiceForWorkPreferenceController"/>
 
+        <com.android.settingslib.RestrictedSwitchPreference
+            android:key="force_disable_supl"
+            android:title="@string/force_disable_supl_title"
+            android:summary="@string/force_disable_supl_summary"
+            settings:controller="com.android.settings.location.ForceDisableSuplPrefController"/>
+
     </PreferenceCategory>
 
     <PreferenceCategory
diff --git a/src/com/android/settings/location/ForceDisableSuplPrefController.java b/src/com/android/settings/location/ForceDisableSuplPrefController.java
new file mode 100644
index 0000000000..1cfae3f3a6
--- /dev/null
+++ b/src/com/android/settings/location/ForceDisableSuplPrefController.java
@@ -0,0 +1,41 @@
+package com.android.settings.location;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.os.Process;
+import android.provider.Settings;
+
+import com.android.settings.core.TogglePreferenceController;
+
+public class ForceDisableSuplPrefController extends TogglePreferenceController {
+
+    public ForceDisableSuplPrefController(Context ctx, String key) {
+        super(ctx, key);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        if (!Process.myUserHandle().isSystem()) {
+            return DISABLED_FOR_USER;
+        }
+
+        return AVAILABLE;
+    }
+
+    @Override
+    public boolean isChecked() {
+        ContentResolver cr = mContext.getContentResolver();
+        String key = Settings.Global.FORCE_DISABLE_SUPL;
+        int def = Settings.Global.FORCE_DISABLE_SUPL_DEFAULT;
+
+        return Settings.Global.getInt(cr, key, def) == 1;
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        ContentResolver cr = mContext.getContentResolver();
+        String key = Settings.Global.FORCE_DISABLE_SUPL;
+
+        return Settings.Global.putInt(cr, key, isChecked ? 1 : 0);
+    }
+}