ECOMP-PAP-REST/src/main/java/org/openecomp/policy/pap/xacml/restAuth/CheckPDP.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ECOMP-PAP-REST
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.policy.pap.xacml.restAuth;
  22
  23 import org.openecomp.policy.common.logging.eelf.MessageCodes;
  24 import org.openecomp.policy.common.logging.eelf.PolicyLogger;
  25
  26 import java.io.FileInputStream;
  27 import java.io.IOException;
  28 import java.io.InputStream;
  29 import java.nio.charset.StandardCharsets;
  30 import java.nio.file.Files;
  31 import java.nio.file.Path;
  32 import java.nio.file.Paths;
  33 import java.util.ArrayList;
  34 import java.util.Arrays;
  35 import java.util.Base64;
  36 import java.util.Collection;
  37 import java.util.Collections;
  38 import java.util.HashMap;
  39 import java.util.List;
  40 import java.util.Properties;
  41
  42 import org.apache.commons.logging.Log;
  43 import org.apache.commons.logging.LogFactory;
  44 import org.openecomp.policy.pap.xacml.rest.XACMLPapServlet;
  45
  46 import org.openecomp.policy.xacml.api.XACMLErrorConstants;
  47
  48 import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
  49 import org.openecomp.policy.common.logging.flexlogger.Logger;
  50
  51 public class CheckPDP {
  52
  53         private static Path pdpPath = null;
  54         private static Properties pdpProp = null;
  55         private static Long oldModified = null;
  56         private static Long newModified = null;
  57         private static HashMap<String, String> pdpMap = null;
  58         private static final Logger logger = FlexLogger.getLogger(CheckPDP.class);
  59
  60         public static boolean validateID(String id) {
  61                 // ReadFile
  62                 try {
  63                         readFile();
  64                 } catch (Exception e) {
  65                         //TODO:EELF Cleanup - Remove logger
  66                         //logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
  67                         PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, e, "CheckPDP", "Exception reading file");
  68                         return false;
  69                 }
  70                 // Check ID
  71                 if (pdpMap.containsKey(id)) {
  72                         return true;
  73                 }
  74                 return false;
  75         }
  76
  77         private static void readFile() throws Exception {
  78                 String pdpFile = XACMLPapServlet.getPDPFile();
  79                 if (pdpFile == null) {
  80                         //TODO:EELF Cleanup - Remove logger
  81                         //logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "PDP File name not Valid : " + pdpFile);
  82                         PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR + "PDP File name is undefined");
  83                         throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"PDP File name not Valid : " + pdpFile);
  84                 }
  85                 if (pdpPath == null) {
  86                         pdpPath = Paths.get(pdpFile);
  87                         if (Files.notExists(pdpPath)) {
  88                                 //TODO:EELF Cleanup - Remove logger
  89                                 //logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "File doesn't exist in the specified Path : "   + pdpPath.toString());
  90                                 PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR + "File doesn't exist in the specified Path");
  91                                 throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"File doesn't exist in the specified Path : "+ pdpPath.toString());
  92                         }
  93                         if (pdpPath.toString().endsWith(".properties")) {
  94                                 readProps();
  95                         } else {
  96                                 //TODO:EELF Cleanup - Remove logger
  97                                 //logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Not a .properties file " + pdpFile);
  98                                 PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR + "Not a .properties file");
  99                                 throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Not a .properties file");
 100                         }
 101                 }
 102                 // Check if File is updated recently
 103                 else {
 104                         newModified = pdpPath.toFile().lastModified();
 105                         if (newModified != oldModified) {
 106                                 // File has been updated.
 107                                 readProps();
 108                         }
 109                 }
 110         }
 111
 112         private static void readProps() throws Exception {
 113                 InputStream in;
 114                 pdpProp = new Properties();
 115                 try {
 116                         in = new FileInputStream(pdpPath.toFile());
 117                         oldModified = pdpPath.toFile().lastModified();
 118                         pdpProp.load(in);
 119                 } catch (IOException e) {
 120                         //TODO:EELF Cleanup - Remove logger
 121                         //logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
 122                         PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, e, "CheckPDP", "Cannot load the Properties file");
 123                         throw new Exception("Cannot Load the Properties file", e);
 124                 }
 125                 // Read the Properties and Load the PDPs and encoding.
 126                 pdpMap = new HashMap<String, String>();
 127                 // Check the Keys for PDP_URLs
 128                 Collection<Object> unsorted = pdpProp.keySet();
 129                 List<String> sorted = new ArrayList(unsorted);
 130                 Collections.sort(sorted);
 131                 for (String propKey : sorted) {
 132                         if (propKey.startsWith("PDP_URL")) {
 133                                 String check_val = pdpProp.getProperty(propKey);
 134                                 if (check_val == null) {
 135                                         throw new Exception("Properties file doesn't have the PDP_URL parameter");
 136                                 }
 137                                 if (check_val.contains(";")) {
 138                                         List<String> pdp_default = new ArrayList<String>(Arrays.asList(check_val.split("\\s*;\\s*")));
 139                                         int pdpCount = 0;
 140                                         while (pdpCount < pdp_default.size()) {
 141                                                 String pdpVal = pdp_default.get(pdpCount);
 142                                                 readPDPParam(pdpVal);
 143                                                 pdpCount++;
 144                                         }
 145                                 } else {
 146                                         readPDPParam(check_val);
 147                                 }
 148                         }
 149                 }
 150                 if (pdpMap == null || pdpMap.isEmpty()) {
 151                         logger.debug(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Cannot Proceed without PDP_URLs");
 152                         throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Cannot Proceed without PDP_URLs");
 153                 }
 154         }
 155
 156         private static void readPDPParam(String pdpVal) throws Exception{
 157                 if(pdpVal.contains(",")){
 158                         List<String> pdpValues = new ArrayList<String>(Arrays.asList(pdpVal.split("\\s*,\\s*")));
 159                         if(pdpValues.size()==3){
 160                                 // 1:2 will be UserID:Password
 161                                 String userID = pdpValues.get(1);
 162                                 String pass = pdpValues.get(2);
 163                                 Base64.Encoder encoder = Base64.getEncoder();
 164                                 // 0 - PDPURL
 165                                 pdpMap.put(pdpValues.get(0), encoder.encodeToString((userID+":"+pass).getBytes(StandardCharsets.UTF_8)));
 166                         }else{
 167                                 //TODO:EELF Cleanup - Remove logger
 168                                 //logger.error(XACMLErrorConstants.ERROR_PERMISSIONS + "No Credentials to send Request: " + pdpValues);
 169                                 PolicyLogger.error(MessageCodes.ERROR_PERMISSIONS + "No Credentials to send Request");
 170                                 throw new Exception(XACMLErrorConstants.ERROR_PERMISSIONS + "No enough Credentials to send Request. " + pdpValues);
 171                         }
 172                 }else{
 173                         //TODO:EELF Cleanup - Remove logger
 174                         //logger.error(XACMLErrorConstants.ERROR_PERMISSIONS + "No Credentials to send Request: " + pdpVal);
 175                         PolicyLogger.error(MessageCodes.ERROR_PERMISSIONS + "No Credentials to send Request: " + pdpVal);
 176                         throw new Exception(XACMLErrorConstants.ERROR_PERMISSIONS +"No enough Credentials to send Request.");
 177                 }
 178         }
 179
 180         public static String getEncoding(String pdpID){
 181                 try {
 182                         readFile();
 183                 } catch (Exception e) {
 184                         //TODO:EELF Cleanup - Remove logger
 185                         //logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
 186                         PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, e, "CheckPDP", "Exeption reading Properties file");
 187                 }
 188                 String encoding = null;
 189                 if(pdpMap!=null && (!pdpMap.isEmpty())){
 190                         try{
 191                                 encoding = pdpMap.get(pdpID);
 192                         } catch(Exception e){
 193                                 //TODO:EELF Cleanup - Remove logger
 194                                 //logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
 195                                 PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, e, "CheckPDP", "Exception encoding");
 196                         }
 197                         return encoding;
 198                 }else{
 199                         return null;
 200                 }
 201         }
 202
 203 }