4aa42bdb17
LocationManagerService was overwriting location source appops tag information whenever a location provider changed state. Since multiple location providers can correspond to the same uid/app id, this could lead to loss of tags. This is fixed by recalculating the set of tag for an entire app id any time a uid changes. AppOpsPolicy had a bug where tag lists coming from different uids under the same appid would inappropriately overwrite each other. This is fixed by modifying the internal/external APIs to work in terms of appid rather than uid, so that it is someone else's responsibility to ensure the result is valid for the app id as a whole. Also fixes a bug where LMS assumes tag listeners are added prior to any providers. If listeners are added after some providers they will miss updates. Fixed by always updating the listener on registration. Bug: 190073375 Test: manual Change-Id: Ib52d752d857b6ac3b6683186a8d1bbcb814fb798
110 lines
3.8 KiB
Java
110 lines
3.8 KiB
Java
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.location;
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import android.annotation.NonNull;
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import android.annotation.Nullable;
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import android.location.util.identity.CallerIdentity;
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import android.os.PackageTagsList;
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/**
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* Location manager local system service interface.
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*
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* @hide Only for use within the system server.
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*/
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public abstract class LocationManagerInternal {
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/**
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* Listener for changes in provider enabled state.
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*/
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public interface ProviderEnabledListener {
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/**
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* Called when the provider enabled state changes for a particular user.
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*/
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void onProviderEnabledChanged(String provider, int userId, boolean enabled);
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}
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/**
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* Interface for getting callbacks when an app id's location provider package tags change.
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*/
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public interface LocationPackageTagsListener {
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/**
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* Called when the package tags for a location provider change for a uid.
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*/
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void onLocationPackageTagsChanged(int uid, @NonNull PackageTagsList packageTagsList);
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}
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/**
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* Returns true if the given provider is enabled for the given user.
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*
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* @param provider A location provider as listed by {@link LocationManager#getAllProviders()}
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* @param userId The user id to check
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* @return True if the provider is enabled, false otherwise
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*/
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public abstract boolean isProviderEnabledForUser(@NonNull String provider, int userId);
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/**
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* Adds a provider enabled listener. The given provider must exist.
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*
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* @param provider The provider to listen for changes
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* @param listener The listener
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*/
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public abstract void addProviderEnabledListener(String provider,
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ProviderEnabledListener listener);
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/**
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* Removes a provider enabled listener. The given provider must exist.
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*
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* @param provider The provider to listen for changes
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* @param listener The listener
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*/
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public abstract void removeProviderEnabledListener(String provider,
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ProviderEnabledListener listener);
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/**
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* Returns true if the given identity is a location provider.
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*
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* @param provider The provider to check, or null to check every provider
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* @param identity The identity to match
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* @return True if the given identity matches either the given location provider or any
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* provider, and false otherwise
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*/
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public abstract boolean isProvider(@Nullable String provider, @NonNull CallerIdentity identity);
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/**
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* Should only be used by GNSS code.
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*/
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// TODO: there is no reason for this to exist as part of any API. move all the logic into gnss
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public abstract void sendNiResponse(int notifId, int userResponse);
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/**
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* Returns the GNSS provided time.
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*
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* @return LocationTime object that includes the current time, according to the GNSS location
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* provider, and the elapsed nanos since boot the current time was computed at.
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*/
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public abstract @Nullable LocationTime getGnssTimeMillis();
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/**
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* Sets a listener for changes in an app id's location provider package tags. Passing
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* {@code null} clears the current listener.
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*/
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public abstract void setLocationPackageTagsListener(
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@Nullable LocationPackageTagsListener listener);
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}
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