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/*
* ============LICENSE_START==========================================
* ONAP - F-GPS API
* ===================================================================
* Copyright © 2019 ATT Intellectual Property. All rights reserved.
* ===================================================================
*
* Unless otherwise specified, all software contained herein is licensed
* under the Apache License, Version 2.0 (the "License");
* you may not use this software 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.
*
* Unless otherwise specified, all documentation contained herein is licensed
* under the Creative Commons License, Attribution 4.0 Intl. (the "License");
* you may not use this documentation except in compliance with the License.
* You may obtain a copy of the License at
*
* https://creativecommons.org/licenses/by/4.0/
*
* Unless required by applicable law or agreed to in writing, documentation
* 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.
*
* ============LICENSE_END============================================
*
*
*/
package org.onap.fgps.api.proxy;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.onap.fgps.api.logging.EELFLoggerDelegate;
import org.onap.fgps.api.utils.CipherUtil;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.HttpClientErrorException;
import org.springframework.web.client.RestClientException;
import org.springframework.web.client.RestTemplate;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
public class AAFProxy {
public static class Auth {
public String id;
public String password;
}
public static class Item {
public String id;
public String expires;
}
public static class User {
public List<Item> user;
}
private static final EELFLoggerDelegate LOGGER = EELFLoggerDelegate.getLogger(AAFProxy.class);
private static final SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX");
private String aafUrlBase;
private String encodedPassword = null;
public AAFProxy(String aafUrlBase) {
this.aafUrlBase = aafUrlBase;
}
public boolean userAuthenticated(HttpServletRequest request) {
LOGGER.info(EELFLoggerDelegate.applicationLogger,"In AAFProxy.userAutheniticated");
String user = request.getHeader("mechId");
if (user==null || user.length()==0) {
request.setAttribute("fail", "AAF failed: mechId header not present.");
return false;
}
String encpassword = request.getHeader("password");
if (encpassword==null || encpassword.length()==0) {
request.setAttribute("fail", "AAF failed: password header not present.");
return false;
}
String password = CipherUtil.decryptPKC(encpassword);
String urlStr = aafUrlBase + "/authn/validate";
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Going to call AAF, url = " + urlStr);
try {
RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers = new HttpHeaders();
headers.add("Authorization", "Basic " + encodedPassword);
headers.add("Accept", "application/Users+json;q=1.0;charset=utf-8;version=2.0,application/json;q=1.0;version=2.0,*/*;q=1.0");
headers.add("Content-Type", "application/json");
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Headers = " + headers);
Auth auth = new Auth();
auth.id = user;
auth.password = password;
ObjectMapper mapper = new ObjectMapper();
String body = mapper.writeValueAsString(auth);
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Call body = " + body.replaceAll("\"password\": ?\".*?\"", "\"password\": \"*****\""));
HttpEntity<String> aafRequest = new HttpEntity<String>(body, headers);
ResponseEntity<String> response = restTemplate.exchange(urlStr, HttpMethod.POST, aafRequest, String.class);
if (response.getStatusCode().equals(HttpStatus.OK)) {
LOGGER.info(EELFLoggerDelegate.applicationLogger,"AAF returned 200 OK");
return true;
} else {
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Unexpected status code returned from AAF? " + response.getStatusCode());
if (response.getStatusCodeValue()>=200 && response.getStatusCodeValue()<=299) {
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Status code is 2XX, assuming OK");
return true;
} else {
LOGGER.warn(EELFLoggerDelegate.applicationLogger,"Status code is not 2XX (" + response.getStatusCode() + "), assuming failed.");
request.setAttribute("fail", "AAF failed: AAF returned status code " + response.getStatusCode());
return false;
}
}
} catch (HttpClientErrorException e) {
if (e.getStatusCode().equals(HttpStatus.FORBIDDEN)) {
LOGGER.warn(EELFLoggerDelegate.applicationLogger,"AAF returned 403 Forbidden");
request.setAttribute("fail", "AAF failed: user not authenticated.");
return false;
} else {
LOGGER.warn(EELFLoggerDelegate.applicationLogger,"Status code is not 2XX (" + e.getStatusCode() + "), assuming failed.");
request.setAttribute("fail", "AAF failed: AAF returned status code " + e.getStatusCode());
return false;
}
} catch (JsonProcessingException e) {
LOGGER.error(EELFLoggerDelegate.errorLogger,"Call to AAF threw an exception: " + e);
request.setAttribute("fail", "AAF failed: Couldn't convert call body? " + e);
return false;
} catch (RestClientException e) {
LOGGER.error(EELFLoggerDelegate.errorLogger,"Call to AAF threw an exception: " + e);
request.setAttribute("fail", "AAF failed: call to AAF threw an exception " + e);
return false;
}
}
public boolean userAuthorized(HttpServletRequest request, String roleRequired) {
LOGGER.info(EELFLoggerDelegate.applicationLogger,"In AAFProxy.userAuthorized");
String user = request.getHeader("mechId");
if (user==null || user.length()==0) {
request.setAttribute("fail", "AAF failed: mechId header not present.");
return false;
}
String urlStr = aafUrlBase + "/authz/users/" + user + "/" + roleRequired;
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Going to call AAF, url = " + urlStr);
try {
RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers = new HttpHeaders();
headers.add("Authorization", "Basic " + encodedPassword);
headers.add("Accept", "application/Users+json;q=1.0;charset=utf-8;version=2.0,application/json;q=1.0;version=2.0,*/*;q=1.0");
HttpEntity<String> aafRequest = new HttpEntity<String>(null, headers);
ResponseEntity<String> response = restTemplate.exchange(urlStr, HttpMethod.GET, aafRequest, String.class);
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Received from AAF: " + response.getBody());
ObjectMapper mapper = new ObjectMapper();
User aafuser;
aafuser = mapper.readValue(response.getBody(), User.class);
if (aafuser.user==null) aafuser.user = new ArrayList<Item>();
LOGGER.info(EELFLoggerDelegate.applicationLogger,"User is a " + aafuser + " with " + aafuser.user.size() + (aafuser.user.size()==0?"":(" items; " + aafuser.user.get(0).id + ", " + aafuser.user.get(0).expires)) );
Date now = new Date();
for (Item item : aafuser.user) {
Date expiryDate = sdf.parse(item.expires);
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Comparing " + item.id +" to " + user);
if (!item.id.equals(user)) continue;
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Comparing " + now + " to " + expiryDate);
if (now.compareTo(expiryDate)>0) {
request.setAttribute("fail", "AAF failed: user role is expired.");
return false;
}
LOGGER.info(EELFLoggerDelegate.applicationLogger,"Success! User authorized.");
return true;
}
} catch (JsonParseException | JsonMappingException e) {
e.printStackTrace();
LOGGER.error(EELFLoggerDelegate.applicationLogger,"Exception while calling AAF: " + e.getMessage());
LOGGER.error(EELFLoggerDelegate.errorLogger,"Exception while calling AAF: " + e);
request.setAttribute("fail", "AAF failed: invalid JSON returned from AAF? (" + e + ")");
return false;
} catch (RuntimeException | IOException e) {
e.printStackTrace();
LOGGER.error(EELFLoggerDelegate.applicationLogger,"Exception while calling AAF: " + e.getMessage());
LOGGER.error(EELFLoggerDelegate.errorLogger,"Exception while calling AAF: " + e);
request.setAttribute("fail", "AAF failed: exception in call to AAF (" + e + ")");
return false;
} catch (ParseException e) {
LOGGER.error(EELFLoggerDelegate.applicationLogger,"Exception while calling AAF: " + e.getMessage());
LOGGER.error(EELFLoggerDelegate.errorLogger,"Exception while calling AAF: " + e);
e.printStackTrace();
request.setAttribute("fail", "AAF failed: invalid date format returned from AAF? (" + e + ")");
return false;
}
request.setAttribute("fail", "AAF failed: user does not have role.");
return false;
}
public void setCredentials(String encodedPassword) {
if (encodedPassword!=null) this.encodedPassword = encodedPassword;
}
}
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