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Commit dd72e1c1 authored by Hall Liu's avatar Hall Liu
Browse files

Grant background location during emergency calls 

When dialing out an emergency call, grant both ACCESS_FINE_LOCATION and
ACCESS_BACKGROUND_LOCATION to the default dialer so that the dialer can
display the user's location

Bug: 124007011
Test: manual
Change-Id: Ie4343b3cbe474034643e4247d24802c10fac4ff2
parent 9b1e1b2d

src/com/android/server/telecom/EmergencyCallHelper.java

+40 −13
Original line number Diff line number Diff line
@@ -34,6 +34,8 @@ public class EmergencyCallHelper { 
    private final String mDefaultDialerPackage;

    private final Timeouts.Adapter mTimeoutsAdapter;

    private UserHandle mLocationPermissionGrantedToUser;

    private boolean mHadFineLocation = false;

    private boolean mHadBackgroundLocation = false;

    private long mLastEmergencyCallTimestampMillis;



    @VisibleForTesting
@@ -48,7 +50,7 @@ public class EmergencyCallHelper { 


    void maybeGrantTemporaryLocationPermission(Call call, UserHandle userHandle) {

        if (shouldGrantTemporaryLocationPermission(call)) {

            grantLocationPermission(userHandle, call);

            grantLocationPermission(userHandle);

        }

        if (call != null && call.isEmergencyCall()) {

            recordEmergencyCallTime();
@@ -87,23 +89,34 @@ public class EmergencyCallHelper { 
            Log.i(this, "ShouldGrantTemporaryLocationPermission, not emergency");

            return false;

        }

        if (hasLocationPermission()) {

            Log.i(this, "ShouldGrantTemporaryLocationPermission, already has location permission");

            return false;

        }

        Log.i(this, "ShouldGrantTemporaryLocationPermission, returning true");

        return true;

    }



    private void grantLocationPermission(UserHandle userHandle, Call call) {

    private void grantLocationPermission(UserHandle userHandle) {

        Log.i(this, "Granting temporary location permission to " + mDefaultDialerPackage

              + ", user: " + userHandle);

        try {

            boolean hadBackgroundLocation = hasBackgroundLocationPermission();

            boolean hadFineLocation = hasFineLocationPermission();

            if (hadBackgroundLocation && hadFineLocation) {

                Log.i(this, "Skipping location grant because the default dialer already"

                        + " holds sufficient permissions");

                return;

            }

            if (!hadFineLocation) {

                mContext.getPackageManager().grantRuntimePermission(mDefaultDialerPackage,

                        Manifest.permission.ACCESS_FINE_LOCATION, userHandle);

            }

            if (!hadBackgroundLocation) {

                mContext.getPackageManager().grantRuntimePermission(mDefaultDialerPackage,

                        Manifest.permission.ACCESS_BACKGROUND_LOCATION, userHandle);

            }

            mHadFineLocation = hadFineLocation;

            mHadBackgroundLocation = hadBackgroundLocation;

            recordPermissionGrant(userHandle);

        } catch (Exception e) {

            Log.e(this, e, "Failed to grant location permission to " + mDefaultDialerPackage

            Log.e(this, e, "Failed to grant location permissions to " + mDefaultDialerPackage

                  + ", user: " + userHandle);

        }

    }
@@ -112,17 +125,29 @@ public class EmergencyCallHelper { 
        Log.i(this, "Revoking temporary location permission from " + mDefaultDialerPackage

              + ", user: " + mLocationPermissionGrantedToUser);

        UserHandle userHandle = mLocationPermissionGrantedToUser;

        clearPermissionGrant();

        try {

            if (!mHadFineLocation) {

                mContext.getPackageManager().revokeRuntimePermission(mDefaultDialerPackage,

                        Manifest.permission.ACCESS_FINE_LOCATION, userHandle);

            }

            if (!mHadBackgroundLocation) {

                mContext.getPackageManager().revokeRuntimePermission(mDefaultDialerPackage,

                        Manifest.permission.ACCESS_BACKGROUND_LOCATION, userHandle);

            }

        } catch (Exception e) {

            Log.e(this, e, "Failed to revoke location permission from " + mDefaultDialerPackage

                  + ", user: " + userHandle);

        }

        clearPermissionGrant();

    }



    private boolean hasBackgroundLocationPermission() {

        return mContext.getPackageManager().checkPermission(

                Manifest.permission.ACCESS_BACKGROUND_LOCATION, mDefaultDialerPackage)

                == PackageManager.PERMISSION_GRANTED;

    }



    private boolean hasLocationPermission() {

    private boolean hasFineLocationPermission() {

        return mContext.getPackageManager().checkPermission(

                Manifest.permission.ACCESS_FINE_LOCATION, mDefaultDialerPackage)

                == PackageManager.PERMISSION_GRANTED;
@@ -138,5 +163,7 @@ public class EmergencyCallHelper { 


    private void clearPermissionGrant() {

        mLocationPermissionGrantedToUser = null;

        mHadBackgroundLocation = false;

        mHadFineLocation = false;

    }

}