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/*-
* ============LICENSE_START=======================================================
* ECOMP Policy Engine
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.openecomp.policy.pypdp.authorization;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Base64;
import java.util.HashMap;
import java.util.Properties;
import java.util.StringTokenizer;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.openecomp.policy.common.logging.eelf.MessageCodes;
import org.openecomp.policy.common.logging.eelf.PolicyLogger;
import org.openecomp.policy.xacml.api.XACMLErrorConstants;
public class AuthenticationService {
private String pyPDPID = Config.getPYPDPID();
private String pyPDPPass = Config.getPYPDPPass();
private static Path clientPath = null;
private static HashMap<String, ArrayList<String>> clientMap = null;
private static Long oldModified = null;
private static Long newModified = null;
private static final Log logger = LogFactory.getLog(AuthenticationService.class);
public boolean authenticate(String authCredentials) {
if (null == authCredentials)
return false;
// header value format will be "Basic encodedstring" for Basic authentication.
final String encodedUserPassword = authCredentials.replaceFirst("Basic" + " ", "");
String usernameAndPassword = null;
try {
byte[] decodedBytes = Base64.getDecoder().decode(encodedUserPassword);
usernameAndPassword = new String(decodedBytes, "UTF-8");
} catch (Exception e) {
logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE + e);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE, e, "");
return false;
}
try {
final StringTokenizer tokenizer = new StringTokenizer(usernameAndPassword, ":");
final String username = tokenizer.nextToken();
final String password = tokenizer.nextToken();
boolean authenticationStatus = pyPDPID.equals(username) && pyPDPPass.equals(password);
return authenticationStatus;
} catch (Exception e){
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, e, "");
return false;
}
}
public static boolean clientAuth(String clientCredentials) {
if(clientCredentials == null){
return false;
}
// Decode the encoded Client Credentials.
String usernameAndPassword = null;
try {
byte[] decodedBytes = Base64.getDecoder().decode(clientCredentials);
usernameAndPassword = new String(decodedBytes, "UTF-8");
} catch (Exception e) {
logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE + e);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE, e, "");
return false;
}
try {
final StringTokenizer tokenizer = new StringTokenizer(usernameAndPassword, ":");
final String username = tokenizer.nextToken();
final String password = tokenizer.nextToken();
return checkClient(username,password);
} catch(Exception e){
logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE + e);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE, e, "");
return false;
}
}
public static boolean checkClientScope(String clientCredentials, String scope) {
if(clientCredentials == null){
return false;
}
// Decode the encoded Client Credentials.
String usernameAndPassword = null;
try {
byte[] decodedBytes = Base64.getDecoder().decode(clientCredentials);
usernameAndPassword = new String(decodedBytes, "UTF-8");
} catch (Exception e) {
logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE + e);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_DATA_ISSUE, e, "");
return false;
}
final StringTokenizer tokenizer = new StringTokenizer(usernameAndPassword, ":");
final String username = tokenizer.nextToken();
// Read the properties and compare.
try{
readFile();
}catch(Exception e){
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, e, "");
return false;
}
// Check ID, Scope
if (clientMap.containsKey(username) && (clientMap.get(username).get(1).equals(scope) || clientMap.get(username).get(1).equals("MASTER"))) {
return true;
}
return false;
}
private static boolean checkClient(String username, String password) {
// Read the properties and compare.
try{
readFile();
}catch(Exception e){
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, e, "");
return false;
}
// Check ID, Key
if (clientMap.containsKey(username) && clientMap.get(username).get(0).equals(password)) {
return true;
}
return false;
}
private static void readFile() throws Exception {
String clientFile = Config.getClientFile();
if (clientFile == null) {
Config.setProperty();
if(clientFile == null){
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Missing CLIENT_FILE property value: " + clientFile);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, "Missing CLIENT_FILE property value: " + clientFile);
throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Missing CLIENT_FILE property value: " + clientFile);
}
}
if (clientPath == null) {
clientPath = Paths.get(clientFile);
if (Files.notExists(clientPath)) {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "File doesn't exist in the specified Path : " + clientPath.toString());
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, "File doesn't exist in the specified Path : " + clientPath.toString());
throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"File doesn't exist in the specified Path : "+ clientPath.toString());
}
if (clientPath.toString().endsWith(".properties")) {
readProps();
} else {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Not a .properties file " + clientFile);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, "Not a .properties file " + clientFile);
throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Not a .properties file " + clientFile);
}
}
// Check if File is updated recently
else {
newModified = clientPath.toFile().lastModified();
if (newModified != oldModified) {
// File has been updated.
readProps();
}
}
}
private static void readProps() throws Exception{
InputStream in;
Properties clientProp = new Properties();
try {
in = new FileInputStream(clientPath.toFile());
oldModified = clientPath.toFile().lastModified();
clientProp.load(in);
} catch (IOException e) {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
// TODO:EELF Cleanup - Remove logger
PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, e, "");
throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Cannot Load the Properties file", e);
}
// Read the Properties and Load the PDPs and encoding.
clientMap = new HashMap<String, ArrayList<String>>();
//
for (Object propKey : clientProp.keySet()) {
String clientID = (String)propKey;
String clientValue = clientProp.getProperty(clientID);
if (clientValue != null) {
if (clientValue.contains(",")) {
ArrayList<String> clientValues = new ArrayList<String>(Arrays.asList(clientValue.split("\\s*,\\s*")));
if(clientValues.get(0)!=null || clientValues.get(1)!=null || clientValues.get(0).isEmpty() || clientValues.get(1).isEmpty()){
clientMap.put(clientID, clientValues);
}
}
}
}
if (clientMap == null || clientMap.isEmpty()) {
logger.debug(XACMLErrorConstants.ERROR_PERMISSIONS + "No Clients ID , Client Key and Scopes are available. Cannot serve any Clients !!");
}
}
}
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