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Commit 583c6458 authored by Himanshu Gupta's avatar Himanshu Gupta
Browse files

Adding API for retrieving the list of pre-installed system packages. 

Launcher apps can use this API to identify system installed apps for
a given profile type.

The API is only accessible to system launcher ATM as it
can enlist activities in private space.
At a later point (b/303803157) this would be fine tuned.

Bug: 308054233
Test: atest LauncherAppsTest
Change-Id: Ifeb19580f13ced5e514244974d022749ed90031d
parent 7d00847a

core/java/android/content/pm/ILauncherApps.aidl

+1 −0
Original line number Diff line number Diff line
@@ -64,6 +64,7 @@ interface ILauncherApps { 
    PendingIntent getActivityLaunchIntent(String callingPackage, in ComponentName component,

            in UserHandle user);

    LauncherUserInfo getLauncherUserInfo(in UserHandle user);

    List<String> getPreInstalledSystemPackages(in UserHandle user);

    void showAppDetailsAsUser(in IApplicationThread caller, String callingPackage,

            String callingFeatureId, in ComponentName component, in Rect sourceBounds,

            in Bundle opts, in UserHandle user);

core/java/android/content/pm/LauncherApps.java

+23 −0
Original line number Diff line number Diff line
@@ -799,6 +799,29 @@ public class LauncherApps { 
        }

    }



    /**

     * Returns the list of the system packages that are installed at user creation.

     *

     * <p>An empty list denotes that all system packages are installed for that user at creation.

     * This behaviour is inherited from the underlining UserManager API.

     *

     * @param userHandle the user for which installed system packages are required.

     * @return {@link List} of {@link String}, representing the package name of the installed

     *        package. Can be empty but not null.

     * @hide

     */

    @FlaggedApi(Flags.FLAG_ALLOW_PRIVATE_PROFILE)

    public List<String> getPreInstalledSystemPackages(@NonNull UserHandle userHandle) {

        if (DEBUG) {

            Log.i(TAG, "getPreInstalledSystemPackages for user: " + userHandle);

        }

        try {

            return mService.getPreInstalledSystemPackages(userHandle);

        } catch (RemoteException re) {

            throw re.rethrowFromSystemServer();

        }

    }



    /**

     * Returns the activity info for a given intent and user handle, if it resolves. Otherwise it

     * returns null.

services/core/java/com/android/server/pm/LauncherAppsService.java

+24 −0
Original line number Diff line number Diff line
@@ -1570,6 +1570,30 @@ public class LauncherAppsService extends SystemService { 
            }

        }



        @Override

        public List<String> getPreInstalledSystemPackages(UserHandle user) {

            // Only system launchers, which have access to recents should have access to this API.

            // TODO(b/303803157): Update access control for this API to default Launcher app.

            if (!mActivityTaskManagerInternal.isCallerRecents(Binder.getCallingUid())) {

                throw new SecurityException("Caller is not the recents app");

            }

            if (!canAccessProfile(user.getIdentifier(),

                    "Can't access preinstalled packages for another user")) {

                return null;

            }

            final long identity = Binder.clearCallingIdentity();

            try {

                String userType = mUm.getUserInfo(user.getIdentifier()).userType;

                Set<String> preInstalledPackages = mUm.getPreInstallableSystemPackages(userType);

                if (preInstalledPackages == null) {

                    return new ArrayList<>();

                }

                return List.copyOf(preInstalledPackages);

            } finally {

                Binder.restoreCallingIdentity(identity);

            }

        }



        @Override

        public void startActivityAsUser(IApplicationThread caller, String callingPackage,

                String callingFeatureId, ComponentName component, Rect sourceBounds,