[POLICY-73] replace openecomp for policy-engine
[policy/engine.git] / POLICY-SDK-APP / src / main / java / org / onap / policy / admin / CheckPDP.java
diff --git a/POLICY-SDK-APP/src/main/java/org/onap/policy/admin/CheckPDP.java b/POLICY-SDK-APP/src/main/java/org/onap/policy/admin/CheckPDP.java
new file mode 100644 (file)
index 0000000..f983c66
--- /dev/null
@@ -0,0 +1,181 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP 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.onap.policy.admin;
+
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+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.onap.policy.common.logging.flexlogger.FlexLogger;
+import org.onap.policy.common.logging.flexlogger.Logger;
+import org.onap.policy.rest.XACMLRestProperties;
+import org.onap.policy.xacml.api.XACMLErrorConstants;
+
+import com.att.research.xacml.util.XACMLProperties;
+
+public class CheckPDP {
+       private static Path pdpPath = null;
+       private static Long oldModified = null;
+       private static HashMap<String, String> pdpMap = null;
+       private static final Logger LOGGER = FlexLogger.getLogger(CheckPDP.class);
+       
+       private CheckPDP(){
+               //default constructor
+       }
+       public static boolean validateID(String id) {
+               // ReadFile
+               try {
+                       readFile();
+               } catch (Exception e) {
+                       LOGGER.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
+                       return false;
+               }
+               // Check ID
+               return (pdpMap.containsKey(id))? true: false;
+       }
+
+       private static void readFile(){
+               String pdpFile = null;
+               Long newModified = null;
+               try{
+                       pdpFile = XACMLProperties.getProperty(XACMLRestProperties.PROP_PDP_IDFILE);     
+               }catch (Exception e){
+                       LOGGER.error(XACMLErrorConstants.ERROR_DATA_ISSUE + "Cannot read the PDP ID File" + e);
+                       return;
+               }
+               if (pdpFile == null) {
+                       LOGGER.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "PDP File name not Valid : " + pdpFile);
+               }
+               if (pdpPath == null) {
+                       pdpPath = Paths.get(pdpFile);
+                       if (!pdpPath.toFile().exists()) {
+                               LOGGER.error(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);
+                       }
+               }
+               // Check if File is updated recently
+               else {
+                       newModified = pdpPath.toFile().lastModified();
+                       if (!newModified.equals(oldModified)) {
+                               // File has been updated.
+                               readProps();
+                       }
+               }
+       }
+
+       @SuppressWarnings({ "unchecked", "rawtypes" })
+       private static void readProps() {
+               Properties pdpProp = null;
+               pdpProp = new Properties();
+               try {
+                       InputStream in = new FileInputStream(pdpPath.toFile());
+                       oldModified = pdpPath.toFile().lastModified();
+                       pdpProp.load(in);
+                       // Read the Properties and Load the PDPs and encoding.
+                       pdpMap = new HashMap<>();
+                       // Check the Keys for PDP_URLs
+                       Collection<Object> unsorted = pdpProp.keySet();
+                       List<String> sorted = new ArrayList(unsorted);
+                       Collections.sort(sorted);
+                       for (String propKey : sorted) {
+                               loadPDPProperties(propKey, pdpProp);
+                       }
+                       if (pdpMap == null || pdpMap.isEmpty()) {
+                               LOGGER.debug(XACMLErrorConstants.ERROR_SYSTEM_ERROR + "Cannot Proceed without PDP_URLs");
+                       }
+                       in.close();
+               } catch (IOException e) {
+                       LOGGER.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e);
+               }
+       }
+       
+       private static void loadPDPProperties(String propKey, Properties pdpProp){
+               if (propKey.startsWith("PDP_URL")) {
+                       String check_val = pdpProp.getProperty(propKey);
+                       if (check_val == null) {
+                               LOGGER.error("Properties file doesn't have the PDP_URL parameter");
+                       }
+                       if (check_val != null && check_val.contains(";")) {
+                               List<String> pdp_default = new ArrayList<>(Arrays.asList(check_val.split("\\s*;\\s*")));
+                               int pdpCount = 0;
+                               while (pdpCount < pdp_default.size()) {
+                                       String pdpVal = pdp_default.get(pdpCount);
+                                       readPDPParam(pdpVal);
+                                       pdpCount++;
+                               }
+                       }
+               }
+       }
+
+       private static void readPDPParam(String pdpVal){
+               if(pdpVal.contains(",")){
+                       List<String> pdpValues = new ArrayList<>(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);
+                       }
+               }else{
+                       LOGGER.error(XACMLErrorConstants.ERROR_PERMISSIONS + "No Credentials to send Request: " + pdpVal);
+               }
+       }
+       
+       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;
+               }
+       }
+}