| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| package org.apache.ranger.credentialapi; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.security.alias.CredentialProvider; |
| import org.apache.hadoop.security.alias.CredentialProviderFactory; |
| import org.apache.hadoop.security.alias.JavaKeyStoreProvider; |
| |
| public class CredentialReader { |
| |
| public static String getDecryptedString(String CrendentialProviderPath,String alias) { |
| String credential=null; |
| try{ |
| if(CrendentialProviderPath==null || alias==null){ |
| return null; |
| } |
| char[] pass = null; |
| Configuration conf = new Configuration(); |
| String crendentialProviderPrefixJceks=JavaKeyStoreProvider.SCHEME_NAME + "://file"; |
| String crendentialProviderPrefixLocalJceks="localjceks://file"; |
| crendentialProviderPrefixJceks=crendentialProviderPrefixJceks.toLowerCase(); |
| CrendentialProviderPath=CrendentialProviderPath.trim(); |
| alias=alias.trim(); |
| if(CrendentialProviderPath.toLowerCase().startsWith(crendentialProviderPrefixJceks) || CrendentialProviderPath.toLowerCase().startsWith(crendentialProviderPrefixLocalJceks)){ |
| conf.set(CredentialProviderFactory.CREDENTIAL_PROVIDER_PATH, |
| //UserProvider.SCHEME_NAME + ":///," + |
| CrendentialProviderPath); |
| }else{ |
| if(CrendentialProviderPath.startsWith("/")){ |
| conf.set(CredentialProviderFactory.CREDENTIAL_PROVIDER_PATH, |
| //UserProvider.SCHEME_NAME + ":///," + |
| JavaKeyStoreProvider.SCHEME_NAME + "://file" + CrendentialProviderPath); |
| }else{ |
| conf.set(CredentialProviderFactory.CREDENTIAL_PROVIDER_PATH, |
| //UserProvider.SCHEME_NAME + ":///," + |
| JavaKeyStoreProvider.SCHEME_NAME + "://file/" + CrendentialProviderPath); |
| } |
| } |
| List<CredentialProvider> providers = CredentialProviderFactory.getProviders(conf); |
| List<String> aliasesList=new ArrayList<String>(); |
| CredentialProvider.CredentialEntry credEntry=null; |
| for(CredentialProvider provider: providers) { |
| //System.out.println("Credential Provider :" + provider); |
| aliasesList=provider.getAliases(); |
| if(aliasesList!=null && aliasesList.contains(alias.toLowerCase())){ |
| credEntry=null; |
| credEntry= provider.getCredentialEntry(alias); |
| pass = credEntry.getCredential(); |
| if(pass!=null && pass.length>0){ |
| credential=String.valueOf(pass); |
| break; |
| } |
| } |
| } |
| }catch(Exception ex){ |
| ex.printStackTrace(); |
| credential=null; |
| } |
| return credential; |
| } |
| } |