54 lines
1.7 KiB
Java
54 lines
1.7 KiB
Java
/*
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* Copyright 2019 Red Hat, Inc. and/or its affiliates
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* and other contributors as indicated by the @author tags.
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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 org.keycloak.models;
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import org.keycloak.common.util.SecretGenerator;
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/**
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* The default implementation for generating/formatting user code of OAuth 2.0 Device Authorization Grant.
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* For generation, uppercase eight-letter format is used.
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* For display, uppercase four-letters dashes four-letters format is used.
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*
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* @author <a href="mailto:h2-wada@nri.co.jp">Hiroyuki Wada</a>
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*/
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public class DefaultOAuth2DeviceUserCodeProvider implements OAuth2DeviceUserCodeProvider {
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private static final int LENGTH = 8;
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private static final String DELIMITER = "-";
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@Override
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public String generate() {
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// For case-insensitive, use uppercase
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return SecretGenerator.getInstance().randomString(LENGTH, SecretGenerator.UPPER);
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}
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@Override
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public String display(String userCode) {
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return new StringBuilder(userCode).insert(4, DELIMITER).toString();
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}
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@Override
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public String format(String userCode) {
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return String.join("", userCode.split(DELIMITER)).toUpperCase();
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}
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@Override
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public void close() {
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}
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}
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