ecomp-sdk-app/src/main/java/org/openecomp/policy/admin/CheckPDP.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ECOMP Policy Engine
   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.admin;
  22
  23
  24 import java.io.FileInputStream;
  25 import java.io.IOException;
  26 import java.io.InputStream;
  27 import java.nio.charset.StandardCharsets;
  28 import java.nio.file.Files;
  29 import java.nio.file.Path;
  30 import java.nio.file.Paths;
  31 import java.util.ArrayList;
  32 import java.util.Arrays;
  33 import java.util.Base64;
  34 import java.util.Collection;
  35 import java.util.Collections;
  36 import java.util.HashMap;
  37 import java.util.List;
  38 import java.util.Properties;
  39
  40 import org.openecomp.policy.rest.XACMLRestProperties;
  41
  42 import org.openecomp.policy.xacml.api.XACMLErrorConstants;
  43 import com.att.research.xacml.util.XACMLProperties;
  44
  45 import org.openecomp.policy.common.logging.flexlogger.FlexLogger;
  46 import org.openecomp.policy.common.logging.flexlogger.Logger;
  47
  48 public class CheckPDP {
  49         private static Path pdpPath = null;
  50         private static Properties pdpProp = null;
  51         private static Long oldModified = null;
  52         private static Long newModified = null;
  53         private static HashMap<String, String> pdpMap = null;
  54         private static final Logger logger = FlexLogger.getLogger(CheckPDP.class);
  55
  56         public static boolean validateID(String id) {
  57                 // ReadFile
  58                 try {
  59                         readFile();
  60                 } catch (Exception e) {
  61                         logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
  62                         return false;
  63                 }
  64                 // Check ID
  65                 if (pdpMap.containsKey(id)) {
  66                         return true;
  67                 }
  68                 return false;
  69         }
  70
  71         private static void readFile() throws Exception {
  72                 String pdpFile = null;
  73                 try{
  74                         pdpFile = XACMLProperties.getProperty(XACMLRestProperties.PROP_PDP_IDFILE);
  75                 }catch (Exception e){
  76                         logger.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "Cannot read the PDP ID File");
  77                         return;
  78                 }
  79                 if (pdpFile == null) {
  80                         logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "PDP File name not Valid : " + pdpFile);
  81                         throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"PDP File name not Valid : " + pdpFile);
  82                 }
  83                 if (pdpPath == null) {
  84                         pdpPath = Paths.get(pdpFile);
  85                         if (Files.notExists(pdpPath)) {
  86                                 logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "File doesn't exist in the specified Path : "     + pdpPath.toString());
  87                                 throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"File doesn't exist in the specified Path : "+ pdpPath.toString());
  88                         }
  89                         if (pdpPath.toString().endsWith(".properties")) {
  90                                 readProps();
  91                         } else {
  92                                 logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Not a .properties file " + pdpFile);
  93                                 throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Not a .properties file");
  94                         }
  95                 }
  96                 // Check if File is updated recently
  97                 else {
  98                         newModified = pdpPath.toFile().lastModified();
  99                         if (newModified != oldModified) {
 100                                 // File has been updated.
 101                                 readProps();
 102                         }
 103                 }
 104         }
 105
 106         @SuppressWarnings({ "unchecked", "rawtypes" })
 107         private static void readProps() throws Exception {
 108                 InputStream in;
 109                 pdpProp = new Properties();
 110                 try {
 111                         in = new FileInputStream(pdpPath.toFile());
 112                         oldModified = pdpPath.toFile().lastModified();
 113                         pdpProp.load(in);
 114                 } catch (IOException e) {
 115                         logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
 116                         throw new Exception("Cannot Load the Properties file", e);
 117                 }
 118                 // Read the Properties and Load the PDPs and encoding.
 119                 pdpMap = new HashMap<String, String>();
 120                 // Check the Keys for PDP_URLs
 121                 Collection<Object> unsorted = pdpProp.keySet();
 122                 List<String> sorted = new ArrayList(unsorted);
 123                 Collections.sort(sorted);
 124                 for (String propKey : sorted) {
 125                         if (propKey.startsWith("PDP_URL")) {
 126                                 String check_val = pdpProp.getProperty(propKey);
 127                                 if (check_val == null) {
 128                                         throw new Exception("Properties file doesn't have the PDP_URL parameter");
 129                                 }
 130                                 if (check_val.contains(";")) {
 131                                         List<String> pdp_default = new ArrayList<String>(Arrays.asList(check_val.split("\\s*;\\s*")));
 132                                         int pdpCount = 0;
 133                                         while (pdpCount < pdp_default.size()) {
 134                                                 String pdpVal = pdp_default.get(pdpCount);
 135                                                 readPDPParam(pdpVal);
 136                                                 pdpCount++;
 137                                         }
 138                                 } else {
 139                                         readPDPParam(check_val);
 140                                 }
 141                         }
 142                 }
 143                 if (pdpMap == null || pdpMap.isEmpty()) {
 144                         logger.debug(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Cannot Proceed without PDP_URLs");
 145                         throw new Exception(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Cannot Proceed without PDP_URLs");
 146                 }
 147         }
 148
 149         private static void readPDPParam(String pdpVal) throws Exception{
 150                 if(pdpVal.contains(",")){
 151                         List<String> pdpValues = new ArrayList<String>(Arrays.asList(pdpVal.split("\\s*,\\s*")));
 152                         if(pdpValues.size()==3){
 153                                 // 1:2 will be UserID:Password
 154                                 String userID = pdpValues.get(1);
 155                                 String pass = pdpValues.get(2);
 156                                 Base64.Encoder encoder = Base64.getEncoder();
 157                                 // 0 - PDPURL
 158                                 pdpMap.put(pdpValues.get(0), encoder.encodeToString((userID+":"+pass).getBytes(StandardCharsets.UTF_8)));
 159                         }else{
 160                                 logger.error(XACMLErrorConstants.ERROR_PERMISSIONS + "No Credentials to send Request: " + pdpValues);
 161                                 throw new Exception(XACMLErrorConstants.ERROR_PERMISSIONS + "No enough Credentials to send Request. " + pdpValues);
 162                         }
 163                 }else{
 164                         logger.error(XACMLErrorConstants.ERROR_PERMISSIONS + "No Credentials to send Request: " + pdpVal);
 165                         throw new Exception(XACMLErrorConstants.ERROR_PERMISSIONS +"No enough Credentials to send Request.");
 166                 }
 167         }
 168
 169         public static String getEncoding(String pdpID){
 170                 try {
 171                         readFile();
 172                 } catch (Exception e) {
 173                         logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
 174                 }
 175                 String encoding = null;
 176                 if(pdpMap!=null && (!pdpMap.isEmpty())){
 177                         try{
 178                                 encoding = pdpMap.get(pdpID);
 179                         } catch(Exception e){
 180                                 logger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
 181                         }
 182                         return encoding;
 183                 }else{
 184                         return null;
 185                 }
 186         }
 187 }