[RESTRICT AUTOMERGE] Restrict ApnEditor settings

- Finish ApnEditor settings if user is not an admin

- Finish ApnEditor settings if user has DISALLOW_CONFIG_MOBILE_NETWORKS restriction

Bug: 279902472
Test: manual test
make RunSettingsRoboTests ROBOTEST_FILTER=ApnEditorTest
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:5c2d727b8f9198bf758a4896eda7c9e5385435ff)
Merged-In: Iecdbbff7e21dfb11e3ba385858747a220cfd3e04
Change-Id: Iecdbbff7e21dfb11e3ba385858747a220cfd3e04

Author: Weng Su

src/com/android/settings/network/ApnEditor.java

@@ -25,6 +25,7 @@
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.PersistableBundle;
+import android.os.UserManager;
 import android.provider.Telephony;
 import android.telephony.CarrierConfigManager;
 import android.telephony.SubscriptionInfo;
@@ -264,6 +265,11 @@ public class ApnEditor extends SettingsPreferenceFragment
     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);
+        if (isUserRestricted()) {
+            Log.e(TAG, "This setting isn't available due to user restriction.");
+            finish();
+            return;
+        }
 
         setLifecycleForAllControllers();
 
@@ -1342,6 +1348,23 @@ private void setCarrierCustomizedConfigToUi() {
         }
     }
 
+    @VisibleForTesting
+    boolean isUserRestricted() {
+        UserManager userManager = getContext().getSystemService(UserManager.class);
+        if (userManager == null) {
+            return false;
+        }
+        if (!userManager.isAdminUser()) {
+            Log.e(TAG, "User is not an admin");
+            return true;
+        }
+        if (userManager.hasUserRestriction(UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS)) {
+            Log.e(TAG, "User is not allowed to configure mobile network");
+            return true;
+        }
+        return false;
+    }
+
     public static class ErrorDialog extends InstrumentedDialogFragment {
 
         public static void showError(ApnEditor editor) {

tests/robotests/src/com/android/settings/network/ApnEditorTest.java

@@ -34,6 +34,7 @@
 import android.content.res.Resources;
 import android.database.Cursor;
 import android.net.Uri;
+import android.os.UserManager;
 import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
@@ -101,6 +102,8 @@ public class ApnEditorTest {
     @Mock
     private FragmentActivity mActivity;
     @Mock
+    private UserManager mUserManager;
+    @Mock
     private ProxySubscriptionManager mProxySubscriptionMgr;
 
     @Captor
@@ -126,6 +129,11 @@ public void setUp() {
         doReturn(mContext.getTheme()).when(mActivity).getTheme();
         doReturn(mContext.getContentResolver()).when(mActivity).getContentResolver();
 
+        doReturn(mUserManager).when(mContext).getSystemService(UserManager.class);
+        doReturn(true).when(mUserManager).isAdminUser();
+        doReturn(false).when(mUserManager)
+                .hasUserRestriction(UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS);
+
         setMockPreference(mContext);
         mApnEditorUT.mApnData = new FakeApnData(APN_DATA);
         mApnEditorUT.sNotSet = "Not Set";
@@ -450,6 +458,27 @@ public void formatInteger_shouldIgnoreNonIntegers() {
         assertThat(ApnEditor.formatInteger("not an int")).isEqualTo("not an int");
     }
 
+    @Test
+    @Config(shadows = ShadowFragment.class)
+    public void onCreate_notAdminUser_shouldFinish() {
+        doReturn(false).when(mUserManager).isAdminUser();
+
+        mApnEditorUT.onCreate(null);
+
+        verify(mApnEditorUT).finish();
+    }
+
+    @Test
+    @Config(shadows = ShadowFragment.class)
+    public void onCreate_hasUserRestriction_shouldFinish() {
+        doReturn(true).when(mUserManager)
+                .hasUserRestriction(UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS);
+
+        mApnEditorUT.onCreate(null);
+
+        verify(mApnEditorUT).finish();
+    }
+
     @Test
     @Config(shadows = ShadowFragment.class)
     public void onCreate_noAction_shouldFinishAndNoCrash() {