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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.admin;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
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.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Properties;
import org.openecomp.policy.rest.XACMLRestProperties;
import org.openecomp.policy.xacml.api.XACMLErrorConstants;
import com.att.research.xacml.util.XACMLProperties;
import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
import org.openecomp.policy.common.logging.flexlogger.Logger;
public class CheckPDP {
private static Path pdpPath = null;
private static Properties pdpProp = null;
private static Long oldModified = null;
private static Long newModified = null;
private static HashMap<String, String> pdpMap = null;
private static final Logger logger = FlexLogger.getLogger(CheckPDP.class);
public static boolean validateID(String id) {
// ReadFile
try {
readFile();
} catch (Exception e) {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
return false;
}
// Check ID
if (pdpMap.containsKey(id)) {
return true;
}
return false;
}
private static void readFile() throws Exception {
String pdpFile = null;
try{
pdpFile = XACMLProperties.getProperty(XACMLRestProperties.PROP_PDP_IDFILE);
}catch (Exception e){
logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "Cannot read the PDP ID File");
return;
}
if (pdpFile == null) {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "PDP File name not Valid : " + pdpFile);
throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"PDP File name not Valid : " + pdpFile);
}
if (pdpPath == null) {
pdpPath = Paths.get(pdpFile);
if (Files.notExists(pdpPath)) {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "File doesn't exist in the specified Path : " + pdpPath.toString());
throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"File doesn't exist in the specified Path : "+ pdpPath.toString());
}
if (pdpPath.toString().endsWith(".properties")) {
readProps();
} else {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Not a .properties file " + pdpFile);
throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Not a .properties file");
}
}
// Check if File is updated recently
else {
newModified = pdpPath.toFile().lastModified();
if (newModified != oldModified) {
// File has been updated.
readProps();
}
}
}
@SuppressWarnings({ "unchecked", "rawtypes" })
private static void readProps() throws Exception {
InputStream in;
pdpProp = new Properties();
try {
in = new FileInputStream(pdpPath.toFile());
oldModified = pdpPath.toFile().lastModified();
pdpProp.load(in);
} catch (IOException e) {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
throw new Exception("Cannot Load the Properties file", e);
}
// Read the Properties and Load the PDPs and encoding.
pdpMap = new HashMap<String, String>();
// Check the Keys for PDP_URLs
Collection<Object> unsorted = pdpProp.keySet();
List<String> sorted = new ArrayList(unsorted);
Collections.sort(sorted);
for (String propKey : sorted) {
if (propKey.startsWith("PDP_URL")) {
String check_val = pdpProp.getProperty(propKey);
if (check_val == null) {
throw new Exception("Properties file doesn't have the PDP_URL parameter");
}
if (check_val.contains(";")) {
List<String> pdp_default = new ArrayList<String>(Arrays.asList(check_val.split("\\s*;\\s*")));
int pdpCount = 0;
while (pdpCount < pdp_default.size()) {
String pdpVal = pdp_default.get(pdpCount);
readPDPParam(pdpVal);
pdpCount++;
}
} else {
readPDPParam(check_val);
}
}
}
if (pdpMap == null || pdpMap.isEmpty()) {
logger.debug(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Cannot Proceed without PDP_URLs");
throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Cannot Proceed without PDP_URLs");
}
}
private static void readPDPParam(String pdpVal) throws Exception{
if(pdpVal.contains(",")){
List<String> pdpValues = new ArrayList<String>(Arrays.asList(pdpVal.split("\\s*,\\s*")));
if(pdpValues.size()==3){
// 1:2 will be UserID:Password
String userID = pdpValues.get(1);
String pass = pdpValues.get(2);
Base64.Encoder encoder = Base64.getEncoder();
// 0 - PDPURL
pdpMap.put(pdpValues.get(0), encoder.encodeToString((userID+":"+pass).getBytes(StandardCharsets.UTF_8)));
}else{
logger.error(XACMLErrorConstants.ERROR_PERMISSIONS + "No Credentials to send Request: " + pdpValues);
throw new Exception(XACMLErrorConstants.ERROR_PERMISSIONS + "No enough Credentials to send Request. " + pdpValues);
}
}else{
logger.error(XACMLErrorConstants.ERROR_PERMISSIONS + "No Credentials to send Request: " + pdpVal);
throw new Exception(XACMLErrorConstants.ERROR_PERMISSIONS +"No enough Credentials to send Request.");
}
}
public static String getEncoding(String pdpID){
try {
readFile();
} catch (Exception e) {
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
}
String encoding = null;
if(pdpMap!=null && (!pdpMap.isEmpty())){
try{
encoding = pdpMap.get(pdpID);
} catch(Exception e){
logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
}
return encoding;
}else{
return null;
}
}
}
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