Don't prompt at boot if we already did that when decrypting (493e3e7e) · Commits · e / os / android_frameworks_base

core/java/android/os/storage/IMountService.java

+59 −1

Original line number	Diff line number	Diff line
		@@ -694,6 +694,36 @@ public interface IMountService extends IInterface {
		return _result;
		}

		public String getPassword() throws RemoteException {
		Parcel _data = Parcel.obtain();
		Parcel _reply = Parcel.obtain();
		String _result;
		try {
		_data.writeInterfaceToken(DESCRIPTOR);
		mRemote.transact(Stub.TRANSACTION_getPassword, _data, _reply, 0);
		_reply.readException();
		_result = _reply.readString();
		} finally {
		_reply.recycle();
		_data.recycle();
		}
		return _result;
		}

		public void clearPassword() throws RemoteException {
		Parcel _data = Parcel.obtain();
		Parcel _reply = Parcel.obtain();
		String _result;
		try {
		_data.writeInterfaceToken(DESCRIPTOR);
		mRemote.transact(Stub.TRANSACTION_clearPassword, _data, _reply, 0);
		_reply.readException();
		} finally {
		_reply.recycle();
		_data.recycle();
		}
		}

		public StorageVolume[] getVolumeList() throws RemoteException {
		Parcel _data = Parcel.obtain();
		Parcel _reply = Parcel.obtain();
		@@ -846,7 +876,11 @@ public interface IMountService extends IInterface {

		static final int TRANSACTION_mkdirs = IBinder.FIRST_CALL_TRANSACTION + 34;

		static final int TRANSACTION_getPasswordType = IBinder.FIRST_CALL_TRANSACTION + 36;
		static final int TRANSACTION_getPasswordType = IBinder.FIRST_CALL_TRANSACTION + 35;

		static final int TRANSACTION_getPassword = IBinder.FIRST_CALL_TRANSACTION + 36;

		static final int TRANSACTION_clearPassword = IBinder.FIRST_CALL_TRANSACTION + 37;

		/**
		* Cast an IBinder object into an IMountService interface, generating a
		@@ -1208,6 +1242,19 @@ public interface IMountService extends IInterface {
		reply.writeInt(result);
		return true;
		}
		case TRANSACTION_getPassword: {
		data.enforceInterface(DESCRIPTOR);
		String result = getPassword();
		reply.writeNoException();
		reply.writeString(result);
		return true;
		}
		case TRANSACTION_clearPassword: {
		data.enforceInterface(DESCRIPTOR);
		clearPassword();
		reply.writeNoException();
		return true;
		}
		}
		return super.onTransact(code, data, reply, flags);
		}
		@@ -1446,4 +1493,15 @@ public interface IMountService extends IInterface {
		* @return PasswordType
		*/
		public int getPasswordType() throws RemoteException;

		/**
		* Get password from vold
		* @return password or empty string
		*/
		public String getPassword() throws RemoteException;

		/**
		* Securely clear password from vold
		*/
		public void clearPassword() throws RemoteException;
		}

core/java/com/android/internal/widget/ILockSettings.aidl

+1 −0

Original line number	Diff line number	Diff line
		@@ -28,6 +28,7 @@ interface ILockSettings {
		boolean checkPattern(in String pattern, int userId);
		void setLockPassword(in String password, int userId);
		boolean checkPassword(in String password, int userId);
		boolean checkVoldPassword(int userId);
		boolean havePattern(int userId);
		boolean havePassword(int userId);
		void removeUser(int userId);

core/java/com/android/internal/widget/LockPatternUtils.java

+14 −0

Original line number	Diff line number	Diff line
		@@ -312,6 +312,20 @@ public class LockPatternUtils {
		}
		}

		/**
		* Check to see if vold already has the password.
		* Note that this also clears vold's copy of the password.
		* @return Whether the vold password matches or not.
		*/
		public boolean checkVoldPassword() {
		final int userId = getCurrentOrCallingUserId();
		try {
		return getLockSettings().checkVoldPassword(userId);
		} catch (RemoteException re) {
		return false;
		}
		}

		/**
		* Check to see if a password matches any of the passwords stored in the
		* password history.

packages/Keyguard/src/com/android/keyguard/KeyguardViewMediator.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -979,6 +979,13 @@ public class KeyguardViewMediator {
		return;
		}

		if (mLockPatternUtils.checkVoldPassword()) {
		if (DEBUG) Log.d(TAG, "Not showing lock screen since just decrypted");
		// Without this, settings is not enabled until the lock screen first appears
		hideLocked();
		return;
		}

		if (DEBUG) Log.d(TAG, "doKeyguard: showing the lock screen");
		showLocked(options);
		}

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

+41 −0

Original line number	Diff line number	Diff line
		@@ -30,7 +30,11 @@ import android.database.sqlite.SQLiteOpenHelper;
		import android.database.sqlite.SQLiteStatement;
		import android.os.Binder;
		import android.os.Environment;
		import android.os.IBinder;
		import android.os.RemoteException;
		import android.os.storage.IMountService;
		import android.os.ServiceManager;
		import android.os.storage.StorageManager;
		import android.os.SystemProperties;
		import android.os.UserHandle;
		import android.os.UserManager;
		@@ -79,6 +83,7 @@ public class LockSettingsService extends ILockSettings.Stub {

		private final Context mContext;
		private LockPatternUtils mLockPatternUtils;
		private boolean mFirstCallToVold;

		public LockSettingsService(Context context) {
		mContext = context;
		@@ -86,6 +91,7 @@ public class LockSettingsService extends ILockSettings.Stub {
		mOpenHelper = new DatabaseHelper(mContext);

		mLockPatternUtils = new LockPatternUtils(context);
		mFirstCallToVold = true;
		}

		public void systemReady() {
		@@ -346,6 +352,33 @@ public class LockSettingsService extends ILockSettings.Stub {
		return true;
		}

		@Override
		public boolean checkVoldPassword(int userId) throws RemoteException {
		if (!mFirstCallToVold) {
		return false;
		}
		mFirstCallToVold = false;

		checkPasswordReadPermission(userId);

		// There's no guarantee that this will safely connect, but if it fails
		// we will simply show the lock screen when we shouldn't, so relatively
		// benign. There is an outside chance something nasty would happen if
		// this service restarted before vold stales out the password in this
		// case. The nastiness is limited to not showing the lock screen when
		// we should, within the first minute of decrypting the phone if this
		// service can't connect to vold, it restarts, and then the new instance
		// does successfully connect.
		final IMountService service = getMountService();
		String password = service.getPassword();
		service.clearPassword();
		if (service.getPasswordType() == StorageManager.CRYPT_TYPE_PATTERN) {
		return checkPattern(password, userId);
		} else {
		return checkPassword(password, userId);
		}
		}

		@Override
		public void removeUser(int userId) {
		checkWritePermission(userId);
		@@ -524,4 +557,12 @@ public class LockSettingsService extends ILockSettings.Stub {
		Secure.LOCK_SCREEN_OWNER_INFO_ENABLED,
		Secure.LOCK_SCREEN_OWNER_INFO
		};

		private IMountService getMountService() {
		final IBinder service = ServiceManager.getService("mount");
		if (service != null) {
		return IMountService.Stub.asInterface(service);
		}
		return null;
		}
		}