diff options
Diffstat (limited to 'ECOMP-PDP-REST/src/main/java/org/openecomp/policy/pdp/rest/config/PDPApiAuth.java')
| -rw-r--r-- | ECOMP-PDP-REST/src/main/java/org/openecomp/policy/pdp/rest/config/PDPApiAuth.java | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/ECOMP-PDP-REST/src/main/java/org/openecomp/policy/pdp/rest/config/PDPApiAuth.java b/ECOMP-PDP-REST/src/main/java/org/openecomp/policy/pdp/rest/config/PDPApiAuth.java new file mode 100644 index 000000000..ed98e5420 --- /dev/null +++ b/ECOMP-PDP-REST/src/main/java/org/openecomp/policy/pdp/rest/config/PDPApiAuth.java @@ -0,0 +1,184 @@ +/*- + * ============LICENSE_START======================================================= + * ECOMP-PDP-REST + * ================================================================================ + * 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.pdp.rest.config; + +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.Map; +import java.util.Properties; +import java.util.StringTokenizer; + +import org.openecomp.policy.api.PolicyEngineException; +import org.openecomp.policy.common.logging.eelf.MessageCodes; +import org.openecomp.policy.common.logging.eelf.PolicyLogger; +import org.openecomp.policy.rest.XACMLRestProperties; +import org.openecomp.policy.utils.AAFPolicyClient; +import org.openecomp.policy.utils.AAFPolicyException; +import org.openecomp.policy.utils.PolicyUtils; +import org.openecomp.policy.xacml.api.XACMLErrorConstants; + +import com.att.research.xacml.util.XACMLProperties; + +public class PDPApiAuth { + private static String environment = null; + private static Path clientPath = null; + private static Map<String,ArrayList<String>> clientMap = null; + private static Long oldModified = null; + private static AAFPolicyClient aafClient = null; + + /* + * Set Property by reading the properties File. + */ + public static void setProperty() { + environment = XACMLProperties.getProperty("ENVIRONMENT", "DEVL"); + String clientFile = XACMLProperties.getProperty(XACMLRestProperties.PROP_PEP_IDFILE); + if(clientFile!=null){ + clientPath = Paths.get(clientFile); + } + try { + aafClient = AAFPolicyClient.getInstance(XACMLProperties.getProperties()); + } catch (AAFPolicyException | IOException e) { + PolicyLogger.error(MessageCodes.ERROR_SYSTEM_ERROR, e, "AAF Client Not instantiated properly."); + } + } + + /* + * Return Environment value of the PDP servlet. + */ + public static String getEnvironment() { + if(environment==null){ + setProperty(); + } + return environment; + } + + /* + * Security check for authentication and authorizations. + */ + public static boolean checkPermissions(String clientEncoding, String requestID, + String resource) { + try{ + String[] userNamePass = PolicyUtils.decodeBasicEncoding(clientEncoding); + if(userNamePass==null){ + String usernameAndPassword = null; + byte[] decodedBytes = Base64.getDecoder().decode(clientEncoding); + usernameAndPassword = new String(decodedBytes, "UTF-8"); + StringTokenizer tokenizer = new StringTokenizer(usernameAndPassword, ":"); + String username = tokenizer.nextToken(); + String password = tokenizer.nextToken(); + userNamePass= new String[]{username, password}; + } + PolicyLogger.info("User " + userNamePass[0] + " is Accessing Policy Engine API."); + Boolean result = false; + // Check Backward Compatibility. + try{ + result = clientAuth(userNamePass); + }catch(Exception e){ + PolicyLogger.error(MessageCodes.ERROR_PERMISSIONS, e, ""); + } + if(!result){ + try{ + String aafPolicyNameSpace = XACMLProperties.getProperty("policy.aaf.namespace"); + String aafResource = XACMLProperties.getProperty("policy.aaf.resource"); + if(!userNamePass[0].contains("@") && aafPolicyNameSpace!= null){ + userNamePass[0] = userNamePass[0] + "@" + aafPolicyNameSpace; + } + if(aafResource != null){ + resource = aafResource + resource; + } + PolicyLogger.info("Contacting AAF in : " + environment); + result = aafClient.checkAuthPerm(userNamePass[0], userNamePass[1], resource, environment, ".*"); + }catch (NullPointerException e){ + result = false; + } + } + return result; + }catch(Exception e){ + PolicyLogger.error(MessageCodes.ERROR_PERMISSIONS, e, ""); + return false; + } + } + + private static Boolean clientAuth(String[] userNamePass) throws Exception{ + if(clientPath==null){ + setProperty(); + } + if (Files.notExists(clientPath)) { + return false; + }else if(clientPath.toString().endsWith(".properties")) { + try { + readProps(clientPath); + if (clientMap.containsKey(userNamePass[0]) && clientMap.get(userNamePass[0]).get(0).equals(userNamePass[1])) { + return true; + } + }catch(PolicyEngineException e){ + return false; + } + } + return false; + } + + private static Map<String, ArrayList<String>> readProps(Path clientPath) throws PolicyEngineException{ + if(oldModified!=null){ + Long newModified = clientPath.toFile().lastModified(); + if (newModified == oldModified) { + return clientMap; + } + } + InputStream in; + Properties clientProp = new Properties(); + try { + in = new FileInputStream(clientPath.toFile()); + clientProp.load(in); + } catch (IOException e) { + PolicyLogger.error(XACMLErrorConstants.ERROR_SYSTEM_ERROR + e); + throw new PolicyEngineException(XACMLErrorConstants.ERROR_SYSTEM_ERROR +"Cannot Load the Properties file", e); + } + // Read the Properties and Load the Clients and their scopes. + 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()) { + PolicyLogger.debug(XACMLErrorConstants.ERROR_PERMISSIONS + "No Clients ID , Client Key and Scopes are available. Cannot serve any Clients !!"); + throw new PolicyEngineException("Empty Client file"); + } + oldModified = clientPath.toFile().lastModified(); + return clientMap; + } +} |