Merge "Update BTS Service to use push API instead of pull API in BIC" into main (344a6413) · Commits · e / os / android_frameworks_base

core/java/android/app/background_install_control_manager.aconfig

+7 −0

Original line number	Diff line number	Diff line
		@@ -9,3 +9,10 @@ flag {
		is_fixed_read_only: true
		bug: "287507984"
		}

		flag {
		name: "background_install_control_callback_api"
		namespace: "preload_safety"
		description: "Feature flag to enable the use of push API in background install control service"
		bug: "369382811"
		}
		No newline at end of file

services/core/java/com/android/server/BinaryTransparencyService.java

+63 −1

Original line number	Diff line number	Diff line
		@@ -65,6 +65,7 @@ import android.os.Binder;
		import android.os.Build;
		import android.os.Bundle;
		import android.os.IBinder;
		import android.os.IRemoteCallback;
		import android.os.RemoteException;
		import android.os.ResultReceiver;
		import android.os.ServiceManager;
		@@ -347,7 +348,8 @@ public class BinaryTransparencyService extends SystemService {
		+ " packages after considering preloads");
		}

		if (CompatChanges.isChangeEnabled(LOG_MBA_INFO)) {
		if (!android.app.Flags.backgroundInstallControlCallbackApi()
		&& CompatChanges.isChangeEnabled(LOG_MBA_INFO)) {
		// lastly measure all newly installed MBAs
		List<IBinaryTransparencyService.AppInfo> allMbaInfo =
		collectAllSilentInstalledMbaInfo(packagesMeasured);
		@@ -1157,6 +1159,49 @@ public class BinaryTransparencyService extends SystemService {
		mBiometricLogger = biometricLogger;
		}

		/**
		* Receive callbacks from BIC to write silently installed apps to log
		*
		* TODO: Add a host test for testing registration and callback of BicCallbackHandler
		* b/380002484
		*/
		static class BicCallbackHandler extends IRemoteCallback.Stub {
		private static final String BIC_CALLBACK_HANDLER_TAG =
		"BTS.BicCallbackHandler";
		private final BinaryTransparencyServiceImpl mServiceImpl;
		static final String FLAGGED_PACKAGE_NAME_KEY = "packageName";

		BicCallbackHandler(BinaryTransparencyServiceImpl impl) {
		mServiceImpl = impl;
		}

		@Override
		public void sendResult(Bundle data) {
		String packageName = data.getString(FLAGGED_PACKAGE_NAME_KEY);
		if (packageName == null) return;
		if (DEBUG) {
		Slog.d(BIC_CALLBACK_HANDLER_TAG, "background install event detected for "
		+ packageName);
		}

		PackageState packageState = LocalServices.getService(PackageManagerInternal.class)
		.getPackageStateInternal(packageName);
		if (packageState == null) {
		Slog.w(TAG, "Package state is unavailable, ignoring the package "
		+ packageName);
		return;
		}
		if (packageState.isUpdatedSystemApp()) {
		return;
		}
		List<IBinaryTransparencyService.AppInfo> mbaInfo = mServiceImpl.collectAppInfo(
		packageState, MBA_STATUS_NEW_INSTALL);
		for (IBinaryTransparencyService.AppInfo appInfo : mbaInfo) {
		mServiceImpl.writeAppInfoToLog(appInfo);
		}
		}
		};

		/**
		* Called when the system service should publish a binder service using
		* {@link #publishBinderService(String, IBinder).}
		@@ -1534,6 +1579,19 @@ public class BinaryTransparencyService extends SystemService {
		}
		}

		private void registerBicCallback() {
		IBackgroundInstallControlService iBics =
		IBackgroundInstallControlService.Stub.asInterface(
		ServiceManager.getService(
		Context.BACKGROUND_INSTALL_CONTROL_SERVICE));
		try {
		iBics.registerBackgroundInstallCallback(
		new BicCallbackHandler(mServiceImpl));
		} catch (RemoteException e) {
		Slog.e(TAG, "Failed to register BackgroundInstallControl callback.");
		}
		}

		private boolean isPackagePreloaded(String packageName) {
		PackageManager pm = mContext.getPackageManager();
		try {
		@@ -1596,6 +1654,10 @@ public class BinaryTransparencyService extends SystemService {
		private void registerAllPackageUpdateObservers() {
		registerApkAndNonStagedApexUpdateListener();
		registerStagedApexUpdateObserver();
		if (android.app.Flags.backgroundInstallControlCallbackApi()
		&& CompatChanges.isChangeEnabled(LOG_MBA_INFO)) {
		registerBicCallback();
		}
		}

		private String translateContentDigestAlgorithmIdToString(int algorithmId) {