/*******************************************************************************
* 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 java.io.IOException;
import java.net.URI;
import org.apache.http.client.HttpClient;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.impl.client.SystemDefaultHttpClient;
import org.mitre.openid.connect.config.ServerConfiguration;
import org.mitre.openid.connect.config.ServerConfiguration.UserInfoTokenMethod;
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.HttpMethod;
import org.springframework.http.client.ClientHttpRequest;
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 UserInfoFetcher {
private Logger logger = LoggerFactory.getLogger(UserInfoFetcher.class);
public UserInfo loadUserInfo(final 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;
}
try {
// if we got this far, try to actually get the userinfo
HttpClient httpClient = new SystemDefaultHttpClient();
HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(httpClient);
String userInfoString = null;
if (serverConfiguration.getUserInfoTokenMethod() == null || serverConfiguration.getUserInfoTokenMethod().equals(UserInfoTokenMethod.HEADER)) {
RestTemplate restTemplate = new RestTemplate(factory) {
@Override
protected ClientHttpRequest createRequest(URI url, HttpMethod method) throws IOException {
ClientHttpRequest httpRequest = super.createRequest(url, method);
httpRequest.getHeaders().add("Authorization", String.format("Bearer %s", token.getAccessTokenValue()));
return httpRequest;
}
};
userInfoString = restTemplate.getForObject(serverConfiguration.getUserInfoUri(), String.class);
} else if (serverConfiguration.getUserInfoTokenMethod().equals(UserInfoTokenMethod.FORM)) {
MultiValueMap<String, String> form = new LinkedMultiValueMap<String, String>();
form.add("access_token", token.getAccessTokenValue());
RestTemplate restTemplate = new RestTemplate(factory);
userInfoString = restTemplate.postForObject(serverConfiguration.getUserInfoUri(), form, String.class);
} else if (serverConfiguration.getUserInfoTokenMethod().equals(UserInfoTokenMethod.QUERY)) {
URIBuilder builder = new URIBuilder(serverConfiguration.getUserInfoUri());
builder.setParameter("access_token", token.getAccessTokenValue());
RestTemplate restTemplate = new RestTemplate(factory);
userInfoString = restTemplate.getForObject(builder.toString(), String.class);
}
if (!Strings.isNullOrEmpty(userInfoString)) {
JsonObject userInfoJson = new JsonParser().parse(userInfoString).getAsJsonObject();
UserInfo userInfo = DefaultUserInfo.fromJson(userInfoJson);
return userInfo;
} else {
// didn't get anything, return null
return null;
}
} catch (Exception e) {
logger.warn("Error fetching userinfo", e);
return null;
}
}
}