119 lines
4.4 KiB
Java
119 lines
4.4 KiB
Java
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.security;
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import android.os.RemoteException;
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import android.os.ServiceManager;
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import android.os.ServiceSpecificException;
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import android.security.apc.IConfirmationCallback;
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import android.security.apc.IProtectedConfirmation;
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import android.security.apc.ResponseCode;
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import android.util.Log;
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/**
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* @hide
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*/
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public class AndroidProtectedConfirmation {
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private static final String TAG = "AndroidProtectedConfirmation";
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public static final int ERROR_OK = ResponseCode.OK;
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public static final int ERROR_CANCELED = ResponseCode.CANCELLED;
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public static final int ERROR_ABORTED = ResponseCode.ABORTED;
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public static final int ERROR_OPERATION_PENDING = ResponseCode.OPERATION_PENDING;
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public static final int ERROR_IGNORED = ResponseCode.IGNORED;
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public static final int ERROR_SYSTEM_ERROR = ResponseCode.SYSTEM_ERROR;
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public static final int ERROR_UNIMPLEMENTED = ResponseCode.UNIMPLEMENTED;
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public static final int FLAG_UI_OPTION_INVERTED =
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IProtectedConfirmation.FLAG_UI_OPTION_INVERTED;
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public static final int FLAG_UI_OPTION_MAGNIFIED =
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IProtectedConfirmation.FLAG_UI_OPTION_MAGNIFIED;
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private IProtectedConfirmation mProtectedConfirmation;
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public AndroidProtectedConfirmation() {
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mProtectedConfirmation = null;
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}
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private synchronized IProtectedConfirmation getService() {
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if (mProtectedConfirmation == null) {
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mProtectedConfirmation = IProtectedConfirmation.Stub.asInterface(ServiceManager
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.getService("android.security.apc"));
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}
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return mProtectedConfirmation;
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}
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/**
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* Requests keystore call into the confirmationui HAL to display a prompt.
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*
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* @param listener the binder to use for callbacks.
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* @param promptText the prompt to display.
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* @param extraData extra data / nonce from application.
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* @param locale the locale as a BCP 47 language tag.
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* @param uiOptionsAsFlags the UI options to use, as flags.
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* @return one of the {@code CONFIRMATIONUI_*} constants, for
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* example {@code KeyStore.CONFIRMATIONUI_OK}.
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*/
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public int presentConfirmationPrompt(IConfirmationCallback listener, String promptText,
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byte[] extraData, String locale, int uiOptionsAsFlags) {
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try {
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getService().presentPrompt(listener, promptText, extraData, locale,
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uiOptionsAsFlags);
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return ERROR_OK;
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} catch (RemoteException e) {
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Log.w(TAG, "Cannot connect to keystore", e);
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return ERROR_SYSTEM_ERROR;
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} catch (ServiceSpecificException e) {
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return e.errorCode;
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}
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}
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/**
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* Requests keystore call into the confirmationui HAL to cancel displaying a prompt.
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*
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* @param listener the binder passed to the {@link #presentConfirmationPrompt} method.
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* @return one of the {@code CONFIRMATIONUI_*} constants, for
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* example {@code KeyStore.CONFIRMATIONUI_OK}.
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*/
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public int cancelConfirmationPrompt(IConfirmationCallback listener) {
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try {
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getService().cancelPrompt(listener);
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return ERROR_OK;
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} catch (RemoteException e) {
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Log.w(TAG, "Cannot connect to keystore", e);
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return ERROR_SYSTEM_ERROR;
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} catch (ServiceSpecificException e) {
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return e.errorCode;
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}
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}
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/**
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* Requests keystore to check if the confirmationui HAL is available.
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*
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* @return whether the confirmationUI HAL is available.
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*/
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public boolean isConfirmationPromptSupported() {
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try {
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return getService().isSupported();
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} catch (RemoteException e) {
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Log.w(TAG, "Cannot connect to keystore", e);
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return false;
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}
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}
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}
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