71 lines
2.6 KiB
Java
71 lines
2.6 KiB
Java
/*
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* Copyright 2020 the original author or authors.
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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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* https://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.springframework.security.oauth2.server.authorization.web;
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import org.springframework.core.convert.converter.Converter;
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import org.springframework.lang.Nullable;
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import org.springframework.security.core.Authentication;
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import org.springframework.security.oauth2.core.AuthorizationGrantType;
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import org.springframework.security.oauth2.core.endpoint.OAuth2ParameterNames;
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import org.springframework.util.Assert;
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import org.springframework.util.StringUtils;
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import javax.servlet.http.HttpServletRequest;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* A {@link Converter} that selects (and delegates) to one of the internal {@code Map} of {@link Converter}'s
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* using the {@link OAuth2ParameterNames#GRANT_TYPE} request parameter.
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*
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* @author Alexey Nesterov
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* @since 0.0.1
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*/
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public final class DelegatingAuthorizationGrantAuthenticationConverter implements Converter<HttpServletRequest, Authentication> {
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private final Map<AuthorizationGrantType, Converter<HttpServletRequest, Authentication>> converters;
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/**
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* Constructs a {@code DelegatingAuthorizationGrantAuthenticationConverter} using the provided parameters.
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*
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* @param converters a {@code Map} of {@link Converter}(s)
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*/
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public DelegatingAuthorizationGrantAuthenticationConverter(
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Map<AuthorizationGrantType, Converter<HttpServletRequest, Authentication>> converters) {
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Assert.notEmpty(converters, "converters cannot be empty");
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this.converters = Collections.unmodifiableMap(new HashMap<>(converters));
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}
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@Nullable
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@Override
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public Authentication convert(HttpServletRequest request) {
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Assert.notNull(request, "request cannot be null");
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String grantType = request.getParameter(OAuth2ParameterNames.GRANT_TYPE);
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if (StringUtils.isEmpty(grantType)) {
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return null;
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}
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Converter<HttpServletRequest, Authentication> converter =
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this.converters.get(new AuthorizationGrantType(grantType));
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if (converter == null) {
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return null;
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}
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return converter.convert(request);
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}
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}
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