org.mitre.openid.connect.client.DefaultUserInfoFetcher.java Source code

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Here is the source code for org.mitre.openid.connect.client.DefaultUserInfoFetcher.java

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/*******************************************************************************
 * Copyright 2014 The MITRE Corporation
 *   and the MIT Kerberos and Internet Trust Consortium
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package org.mitre.openid.connect.client;

import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.SystemDefaultHttpClient;
import org.mitre.openid.connect.config.ServerConfiguration;
import org.mitre.openid.connect.model.DefaultUserInfo;
import org.mitre.openid.connect.model.OIDCAuthenticationToken;
import org.mitre.openid.connect.model.UserInfo;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.client.RestTemplate;

import com.google.common.base.Strings;
import com.google.gson.JsonObject;
import com.google.gson.JsonParser;

/**
 * Utility class to fetch userinfo from the userinfo endpoint, if available.
 * @author jricher
 *
 */
public class DefaultUserInfoFetcher implements UserInfoFetcher {

    private Logger logger = LoggerFactory.getLogger(UserInfoFetcher.class);

    @Override
    public UserInfo loadUserInfo(OIDCAuthenticationToken token) {

        ServerConfiguration serverConfiguration = token.getServerConfiguration();

        if (serverConfiguration == null) {
            logger.warn("No server configuration found.");
            return null;
        }

        if (Strings.isNullOrEmpty(serverConfiguration.getUserInfoUri())) {
            logger.warn("No userinfo endpoint, not fetching.");
            return null;
        }

        // if we got this far, try to actually get the userinfo
        HttpClient httpClient = new SystemDefaultHttpClient();

        HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(httpClient);

        RestTemplate restTemplate = new RestTemplate(factory);

        MultiValueMap<String, String> form = new LinkedMultiValueMap<String, String>();
        form.add("access_token", token.getAccessTokenValue());

        try {
            String userInfoString = restTemplate.postForObject(serverConfiguration.getUserInfoUri(), form,
                    String.class);

            JsonObject userInfoJson = new JsonParser().parse(userInfoString).getAsJsonObject();

            UserInfo userInfo = DefaultUserInfo.fromJson(userInfoJson);

            return userInfo;
        } catch (Exception e) {
            logger.warn("Error fetching userinfo", e);
            return null;
        }

    }

}