VPN: Convert current-context IPCs to user context

These fetch info for the wrong user, which may be either wrong or worse
wholly nonexistent.

Bug: 20747154
Change-Id: Ibd5f2e5d3c5dfd252a032ebdfe204de7166fa3a5

src/com/android/settings/vpn2/AppDialog.java

@@ -40,15 +40,18 @@ import com.android.settings.R;
  * {@see ConfigDialog}
  */
 class AppDialog extends AlertDialog implements DialogInterface.OnClickListener {
-    private final PackageInfo mPkgInfo;
     private final Listener mListener;
+    private final PackageInfo mPkgInfo;
+    private final String mLabel;
     private final boolean mConnected;
 
-    AppDialog(Context context, Listener listener, PackageInfo pkgInfo, boolean connected) {
+    AppDialog(Context context, Listener listener, PackageInfo pkgInfo, String label,
+            boolean connected) {
         super(context);
 
         mListener = listener;
         mPkgInfo = pkgInfo;
+        mLabel = label;
         mConnected = connected;
     }
 
@@ -58,14 +61,7 @@ class AppDialog extends AlertDialog implements DialogInterface.OnClickListener {
 
     @Override
     protected void onCreate(Bundle savedState) {
-        CharSequence vpnName;
+        setTitle(mLabel);
-        try {
-            vpnName = VpnConfig.getVpnLabel(getContext(), mPkgInfo.packageName);
-        } catch (PackageManager.NameNotFoundException ex) {
-            vpnName = mPkgInfo.packageName;
-        }
-
-        setTitle(vpnName);
         setMessage(getContext().getString(R.string.vpn_version, mPkgInfo.versionName));
 
         createButtons();

src/com/android/settings/vpn2/AppDialogFragment.java

@@ -40,18 +40,20 @@ public class AppDialogFragment extends DialogFragment implements AppDialog.Liste
     private static final String TAG = "AppDialogFragment";
 
     private static final String ARG_MANAGING = "managing";
+    private static final String ARG_LABEL = "label";
     private static final String ARG_PACKAGE = "package";
     private static final String ARG_CONNECTED = "connected";
 
     private final IConnectivityManager mService = IConnectivityManager.Stub.asInterface(
             ServiceManager.getService(Context.CONNECTIVITY_SERVICE));
 
-    public static void show(VpnSettings parent, PackageInfo pkgInfo, boolean managing,
+    public static void show(VpnSettings parent, PackageInfo pkgInfo, String label, boolean managing,
             boolean connected) {
         if (!parent.isAdded()) return;
 
         Bundle args = new Bundle();
         args.putParcelable(ARG_PACKAGE, pkgInfo);
+        args.putString(ARG_LABEL, label);
         args.putBoolean(ARG_MANAGING, managing);
         args.putBoolean(ARG_CONNECTED, connected);
 
@@ -65,23 +67,16 @@ public class AppDialogFragment extends DialogFragment implements AppDialog.Liste
     public Dialog onCreateDialog(Bundle savedInstanceState) {
         Bundle args = getArguments();
         PackageInfo pkgInfo = (PackageInfo) args.getParcelable(ARG_PACKAGE);
+        String label = args.getString(ARG_LABEL);
         boolean managing = args.getBoolean(ARG_MANAGING);
         boolean connected = args.getBoolean(ARG_CONNECTED);
 
         if (managing) {
-            return new AppDialog(getActivity(), this, pkgInfo, connected);
+            return new AppDialog(getActivity(), this, pkgInfo, label, connected);
         } else {
             // Build an AlertDialog with an option to disconnect.
-
-            CharSequence vpnName;
-            try {
-                vpnName = VpnConfig.getVpnLabel(getActivity(), pkgInfo.packageName);
-            } catch (PackageManager.NameNotFoundException ex) {
-                vpnName = pkgInfo.packageName;
-            }
-
             AlertDialog.Builder dlog = new AlertDialog.Builder(getActivity())
-                    .setTitle(vpnName)
+                    .setTitle(label)
                     .setMessage(getActivity().getString(R.string.vpn_disconnect_confirm))
                     .setNegativeButton(getActivity().getString(R.string.vpn_cancel), null);
 

src/com/android/settings/vpn2/AppPreference.java

@@ -18,7 +18,6 @@ package com.android.settings.vpn2;
 
 import android.app.AppGlobals;
 import android.content.Context;
-import android.content.pm.IPackageManager;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.graphics.drawable.Drawable;
@@ -55,13 +54,17 @@ public class AppPreference extends ManageablePreference {
     public PackageInfo getPackageInfo() {
         UserHandle user = new UserHandle(UserHandle.getUserId(mUid));
         try {
-            IPackageManager ipm = AppGlobals.getPackageManager();
+            PackageManager pm = getUserContext().getPackageManager();
-            return ipm.getPackageInfo(mPackageName, 0 /* flags */, user.getIdentifier());
+            return pm.getPackageInfo(mPackageName, 0 /* flags */);
-        } catch (RemoteException rme) {
+        } catch (PackageManager.NameNotFoundException nnfe) {
             return null;
         }
     }
 
+    public String getLabel() {
+        return mName;
+    }
+
     public String getPackageName() {
         return mPackageName;
     }
@@ -85,24 +88,28 @@ public class AppPreference extends ManageablePreference {
 
         mName = mPackageName;
         Drawable icon = null;
+
         try {
             // Make all calls to the package manager as the appropriate user.
-            int userId = UserHandle.getUserId(mUid);
+            Context userContext = getUserContext();
-            Context userContext = getContext().createPackageContextAsUser(
-                    getContext().getPackageName(), 0 /* flags */, new UserHandle(userId));
             PackageManager pm = userContext.getPackageManager();
-
+            // Fetch icon and VPN label- the nested catch block is for the case that the app doesn't
-            // Fetch icon and VPN label
+            // exist, in which case we can fall back to the default activity icon for an activity in
-            PackageInfo pkgInfo = pm.getPackageInfo(mPackageName, 0 /* flags */);
+            // that user.
-            if (pkgInfo != null) {
+            try {
-                icon = pkgInfo.applicationInfo.loadIcon(pm);
+                PackageInfo pkgInfo = pm.getPackageInfo(mPackageName, 0 /* flags */);
-                mName = VpnConfig.getVpnLabel(userContext, mPackageName).toString();
+                if (pkgInfo != null) {
+                    icon = pkgInfo.applicationInfo.loadIcon(pm);
+                    mName = VpnConfig.getVpnLabel(userContext, mPackageName).toString();
+                }
+            } catch (PackageManager.NameNotFoundException pkgNotFound) {
+                // Use default app label and icon as fallback
             }
-        } catch (PackageManager.NameNotFoundException nnfe) {
+            if (icon == null) {
-            // Failed - use default app label and icon as fallback
+                icon = pm.getDefaultActivityIcon();
-        }
+            }
-        if (icon == null) {
+        } catch (PackageManager.NameNotFoundException userNotFound) {
-            icon = getContext().getPackageManager().getDefaultActivityIcon();
+            // No user, no useful information to obtain. Quietly fail.
         }
         setTitle(mName);
         setIcon(icon);
@@ -110,6 +117,12 @@ public class AppPreference extends ManageablePreference {
         notifyHierarchyChanged();
     }
 
+    private Context getUserContext() throws PackageManager.NameNotFoundException {
+        UserHandle user = new UserHandle(UserHandle.getUserId(mUid));
+        return getContext().createPackageContextAsUser(
+                getContext().getPackageName(), 0 /* flags */, user);
+    }
+
     public int compareTo(Preference preference) {
         if (preference instanceof AppPreference) {
             AppPreference another = (AppPreference) preference;

src/com/android/settings/vpn2/VpnSettings.java

@@ -251,7 +251,7 @@ public class VpnSettings extends SettingsPreferenceFragment implements
 
             // Already onnected or no launch intent available - show an info dialog
             PackageInfo pkgInfo = pref.getPackageInfo();
-            AppDialogFragment.show(this, pkgInfo, false /* editing */, connected);
+            AppDialogFragment.show(this, pkgInfo, pref.getLabel(), false /* editing */, connected);
             return true;
         }
         return false;
@@ -268,8 +268,9 @@ public class VpnSettings extends SettingsPreferenceFragment implements
                         true /* exists */);
             } else if (tag instanceof AppPreference) {
                 AppPreference pref = (AppPreference) tag;
-                AppDialogFragment.show(VpnSettings.this, pref.getPackageInfo(), true /* editing */,
+                boolean connected = (pref.getState() == AppPreference.STATE_CONNECTED);
-                        (pref.getState() == AppPreference.STATE_CONNECTED) /* connected */);
+                AppDialogFragment.show(VpnSettings.this, pref.getPackageInfo(), pref.getLabel(),
+                        true /* editing */, connected);
             }
         }
     };