Add AdapterService implementation for new CDM association-based (20850979) · Commits · e / os / android_packages_modules_Bluetooth

android/app/src/com/android/bluetooth/Utils.java

+68 −0

Original line number	Diff line number	Diff line
		@@ -16,11 +16,14 @@

		package com.android.bluetooth;

		import android.Manifest;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.app.AppOpsManager;
		import android.bluetooth.BluetoothAdapter;
		import android.bluetooth.BluetoothDevice;
		import android.companion.Association;
		import android.companion.CompanionDeviceManager;
		import android.content.ContentValues;
		import android.content.Context;
		import android.content.ContextWrapper;
		@@ -285,6 +288,71 @@ public final class Utils {
		Utils.sForegroundUserId = uid;
		}

		/**
		* Enforces that a Companion Device Manager (CDM) association exists between the calling
		* application and the Bluetooth Device.
		*
		* @param cdm the CompanionDeviceManager object
		* @param context the Bluetooth AdapterService context
		* @param callingPackage the calling package
		* @param callingUid the calling app uid
		* @param device the remote BluetoothDevice
		* @return {@code true} if there is a CDM association
		* @throws SecurityException if the package name does not match the uid or the association
		* doesn't exist
		*/
		public static boolean enforceCdmAssociation(CompanionDeviceManager cdm, Context context,
		String callingPackage, int callingUid, BluetoothDevice device) {
		if (!isPackageNameAccurate(context, callingPackage, callingUid)) {
		throw new SecurityException("hasCdmAssociation: Package name " + callingPackage
		+ " is inaccurate for calling uid " + callingUid);
		}

		for (Association association : cdm.getAllAssociations()) {
		if (association.getPackageName().equals(callingPackage)
		&& association.getDeviceMacAddress().equals(device.getAddress())) {
		return true;
		}
		}
		throw new SecurityException("The application with package name " + callingPackage
		+ " does not have a CDM association with the Bluetooth Device");
		}

		/**
		* Verifies whether the calling package name matches the calling app uid
		* @param context the Bluetooth AdapterService context
		* @param callingPackage the calling application package name
		* @param callingUid the calling application uid
		* @return {@code true} if the package name matches the calling app uid, {@code false} otherwise
		*/
		public static boolean isPackageNameAccurate(Context context, String callingPackage,
		int callingUid) {
		// Verifies the integrity of the calling package name
		try {
		int packageUid = context.getPackageManager().getPackageUid(callingPackage, 0);
		if (packageUid != callingUid) {
		return false;
		}
		} catch (PackageManager.NameNotFoundException e) {
		Log.e(TAG, "isPackageNameAccurate: App with package name " + callingPackage
		+ " does not exist");
		return false;
		}
		return true;
		}

		/**
		* Checks whether the caller has the BLUETOOTH_PRIVILEGED permission
		*
		* @param context the Bluetooth AdapterService context
		* @return {@code true} if the caller has the BLUETOOTH_PRIVILEGED permission, {@code false}
		* otherwise
		*/
		public static boolean hasBluetoothPrivilegedPermission(Context context) {
		return context.checkCallingOrSelfPermission(Manifest.permission.BLUETOOTH_PRIVILEGED)
		== PackageManager.PERMISSION_GRANTED;
		}

		public static void enforceBluetoothPermission(Context context) {
		context.enforceCallingOrSelfPermission(
		android.Manifest.permission.BLUETOOTH,

android/app/src/com/android/bluetooth/btservice/AdapterService.java

+17 −22

Original line number	Diff line number	Diff line
		@@ -22,8 +22,11 @@ import static com.android.bluetooth.Utils.callerIsSystemOrActiveUser;
		import static com.android.bluetooth.Utils.enforceBluetoothAdminPermission;
		import static com.android.bluetooth.Utils.enforceBluetoothPermission;
		import static com.android.bluetooth.Utils.enforceBluetoothPrivilegedPermission;
		import static com.android.bluetooth.Utils.enforceCdmAssociation;
		import static com.android.bluetooth.Utils.enforceDumpPermission;
		import static com.android.bluetooth.Utils.enforceLocalMacAddressPermission;
		import static com.android.bluetooth.Utils.hasBluetoothPrivilegedPermission;
		import static com.android.bluetooth.Utils.isPackageNameAccurate;

		import android.annotation.Nullable;
		import android.app.ActivityManager;
		@@ -49,7 +52,7 @@ import android.bluetooth.IBluetoothMetadataListener;
		import android.bluetooth.IBluetoothSocketManager;
		import android.bluetooth.OobData;
		import android.bluetooth.UidTraffic;
		import android.companion.ICompanionDeviceManager;
		import android.companion.CompanionDeviceManager;
		import android.content.BroadcastReceiver;
		import android.content.Context;
		import android.content.Intent;
		@@ -249,7 +252,7 @@ public class AdapterService extends Service {
		private PowerManager.WakeLock mWakeLock;
		private String mWakeLockName;
		private UserManager mUserManager;
		private ICompanionDeviceManager mCompanionManager;
		private CompanionDeviceManager mCompanionDeviceManager;

		private PhonePolicy mPhonePolicy;
		private ActiveDeviceManager mActiveDeviceManager;
		@@ -505,8 +508,7 @@ public class AdapterService extends Service {
		mUserManager = (UserManager) getSystemService(Context.USER_SERVICE);
		mBatteryStats = IBatteryStats.Stub.asInterface(
		ServiceManager.getService(BatteryStats.SERVICE_NAME));
		mCompanionManager = ICompanionDeviceManager.Stub.asInterface(
		ServiceManager.getService(Context.COMPANION_DEVICE_SERVICE));
		mCompanionDeviceManager = getSystemService(CompanionDeviceManager.class);

		mBluetoothKeystoreService.initJni();

		@@ -1722,13 +1724,18 @@ public class AdapterService extends Service {
		}

		@Override
		public boolean setRemoteAlias(BluetoothDevice device, String name) {
		public boolean setRemoteAlias(BluetoothDevice device, String name, String callingPackage) {
		AdapterService service = getService();
		if (service == null \|\| !callerIsSystemOrActiveUser(TAG, "setRemoteAlias")) {
		if (service == null \|\| !callerIsSystemOrActiveUser(TAG, "setRemoteAlias")
		\|\| name == null \|\| name.isEmpty()) {
		return false;
		}

		if (!hasBluetoothPrivilegedPermission(service)) {
		enforceBluetoothPermission(service);
		enforceCdmAssociation(service.mCompanionDeviceManager, service, callingPackage,
		Binder.getCallingUid(), device);
		}

		DeviceProperties deviceProp = service.mRemoteDevices.getDeviceProperties(device);
		if (deviceProp == null) {
		@@ -2441,14 +2448,7 @@ public class AdapterService extends Service {
		return false;
		}

		// Verifies the integrity of the calling package name
		try {
		int packageUid = getPackageManager().getPackageUid(callingPackage, 0);
		if (packageUid != Binder.getCallingUid()) {
		return false;
		}
		} catch (PackageManager.NameNotFoundException e) {
		Log.e(TAG, "createBond: App with package name " + callingPackage + " does not exist");
		if (!isPackageNameAccurate(this, callingPackage, Binder.getCallingUid())) {
		return false;
		}

		@@ -2546,13 +2546,8 @@ public class AdapterService extends Service {
		public boolean canBondWithoutDialog(BluetoothDevice device) {
		if (mBondAttemptCallerInfo.containsKey(device.getAddress())) {
		CallerInfo bondCallerInfo = mBondAttemptCallerInfo.get(device.getAddress());
		try {
		return mCompanionManager.canPairWithoutPrompt(bondCallerInfo.callerPackageName,
		return mCompanionDeviceManager.canPairWithoutPrompt(bondCallerInfo.callerPackageName,
		device.getAddress(), bondCallerInfo.userId);
		} catch (RemoteException ex) {
		Log.e(TAG, "RemoteException while calling canPairWithoutPrompt in "
		+ "ICompanionDeviceManager");
		}
		}
		return false;
		}