Merge "Refactor CarrierServicesSmsFilter to enable parallel filtering." (2b0c822d) · Commits · e / devices / smdk4412 / android_frameworks_opt_telephony

src/java/com/android/internal/telephony/CarrierServicesSmsFilter.java

+59 −23

Original line number	Diff line number	Diff line
		@@ -35,6 +35,7 @@ import com.android.internal.telephony.uicc.UiccController;
		import java.util.ArrayList;
		import java.util.Arrays;
		import java.util.List;
		import java.util.Optional;

		/**
		* Filters incoming SMS with carrier services.
		@@ -75,6 +76,20 @@ public class CarrierServicesSmsFilter {
		* @return {@code true} if the SMS was handled by carrier services.
		*/
		boolean filter() {
		Optional<String> carrierAppForFiltering = getCarrierAppPackageForFiltering();
		List<String> smsFilterPackages = new ArrayList<>();
		if (carrierAppForFiltering.isPresent()) {
		smsFilterPackages.add(carrierAppForFiltering.get());
		}
		FilterAggregator filterAggregator = new FilterAggregator(smsFilterPackages.size());
		for (String smsFilterPackage : smsFilterPackages) {
		filterWithPackage(smsFilterPackage, filterAggregator);
		}
		boolean handled = smsFilterPackages.size() > 0;
		return handled;
		}

		private Optional<String> getCarrierAppPackageForFiltering() {
		List<String> carrierPackages = null;
		UiccCard card = UiccController.getInstance().getUiccCard(mPhoneId);
		if (card != null) {
		@@ -86,8 +101,7 @@ public class CarrierServicesSmsFilter {
		}
		if (carrierPackages != null && carrierPackages.size() == 1) {
		log("Found carrier package.");
		filterWithCarrierApp(carrierPackages.get(0));
		return true;
		return Optional.of(carrierPackages.get(0));
		}

		// It is possible that carrier app is not present as a CarrierPackage, but instead as a
		@@ -97,19 +111,18 @@ public class CarrierServicesSmsFilter {

		if (systemPackages != null && systemPackages.size() == 1) {
		log("Found system package.");
		filterWithCarrierApp(systemPackages.get(0));
		return true;
		return Optional.of(systemPackages.get(0));
		}
		logv("Unable to find carrier package: " + carrierPackages
		+ ", nor systemPackages: " + systemPackages);
		return false;
		return Optional.empty();
		}

		private void filterWithCarrierApp(String carrierPackageName) {
		private void filterWithPackage(String packageName, FilterAggregator filterAggregator) {
		CarrierSmsFilter smsFilter = new CarrierSmsFilter(mPdus, mDestPort, mPduFormat);
		CarrierSmsFilterCallback smsFilterCallback =
		new CarrierSmsFilterCallback(mCarrierServicesSmsFilterCallback, smsFilter);
		smsFilter.filterSms(carrierPackageName, smsFilterCallback);
		new CarrierSmsFilterCallback(filterAggregator, smsFilter);
		smsFilter.filterSms(packageName, smsFilterCallback);
		}

		private List<String> getSystemAppForIntent(Intent intent) {
		@@ -152,7 +165,6 @@ public class CarrierServicesSmsFilter {
		void onFilterComplete(int result);
		}


		/**
		* Asynchronously binds to the carrier messaging service, and filters out the message if
		* instructed to do so by the carrier messaging service. A new instance must be used for every
		@@ -208,13 +220,12 @@ public class CarrierServicesSmsFilter {
		* the result is ready, the carrier messaging service connection is disposed.
		*/
		private final class CarrierSmsFilterCallback extends ICarrierMessagingCallback.Stub {
		private final CarrierServicesSmsFilterCallbackInterface mCarrierServicesSmsFilterCallback;
		private final FilterAggregator mFilterAggregator;
		private final CarrierMessagingServiceManager mCarrierMessagingServiceManager;

		CarrierSmsFilterCallback(
		CarrierServicesSmsFilterCallbackInterface carrierServicesSmsFilterCallback,
		CarrierSmsFilterCallback(FilterAggregator filterAggregator,
		CarrierMessagingServiceManager carrierMessagingServiceManager) {
		mCarrierServicesSmsFilterCallback = carrierServicesSmsFilterCallback;
		mFilterAggregator = filterAggregator;
		mCarrierMessagingServiceManager = carrierMessagingServiceManager;
		}

		@@ -224,15 +235,7 @@ public class CarrierServicesSmsFilter {
		@Override
		public void onFilterComplete(int result) {
		mCarrierMessagingServiceManager.disposeConnection(mContext);
		// Calling identity was the CarrierMessagingService in this callback, change it back to
		// ours. This is required for dropSms() and VisualVoicemailSmsFilter.filter().
		long token = Binder.clearCallingIdentity();
		try {
		mCarrierServicesSmsFilterCallback.onFilterComplete(result);
		} finally {
		// return back to the CarrierMessagingService, restore the calling identity.
		Binder.restoreCallingIdentity(token);
		}
		mFilterAggregator.onFilterComplete(result);
		}

		@Override
		@@ -255,4 +258,37 @@ public class CarrierServicesSmsFilter {
		loge("Unexpected onDownloadMmsComplete call with result: " + result);
		}
		}

		private final class FilterAggregator {
		private final Object mFilterLock = new Object();
		private int mNumPendingFilters;
		private int mFilterResult;

		FilterAggregator(int numFilters) {
		mNumPendingFilters = numFilters;
		mFilterResult = CarrierMessagingService.RECEIVE_OPTIONS_DEFAULT;
		}

		void onFilterComplete(int result) {
		synchronized (mFilterLock) {
		mNumPendingFilters--;
		combine(result);
		if (mNumPendingFilters == 0) {
		// Calling identity was the CarrierMessagingService in this callback, change it
		// back to ours.
		long token = Binder.clearCallingIdentity();
		try {
		mCarrierServicesSmsFilterCallback.onFilterComplete(mFilterResult);
		} finally {
		// return back to the CarrierMessagingService, restore the calling identity.
		Binder.restoreCallingIdentity(token);
		}
		}
		}
		}

		private void combine(int result) {
		mFilterResult = mFilterResult \| result;
		}
		}
		}