Engine.java revision 897538a36c18f4db8f9f68ee566aec0bda842e9f
1adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project/* 2adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Licensed to the Apache Software Foundation (ASF) under one or more 3adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * contributor license agreements. See the NOTICE file distributed with 4adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * this work for additional information regarding copyright ownership. 5adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * The ASF licenses this file to You under the Apache License, Version 2.0 6adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * (the "License"); you may not use this file except in compliance with 7adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * the License. You may obtain a copy of the License at 8adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 9adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 10adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * 11adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Unless required by applicable law or agreed to in writing, software 12adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 13adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * See the License for the specific language governing permissions and 15adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * limitations under the License. 16adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 17adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 18adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project/** 19adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project* @author Boris V. Kuznetsov 20adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project* @version $Revision$ 21adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project*/ 22adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 23adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectpackage org.apache.harmony.security.fortress; 24adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 25adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.security.NoSuchAlgorithmException; 26adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectimport java.security.Provider; 27adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 282f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughesimport org.apache.harmony.security.Util; 29adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 30adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 31adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project/** 32f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes * 33adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * This class implements common functionality for all engine classes 34f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes * 35adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 36adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Projectpublic class Engine { 37adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 38adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project // Service name 39adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private String serviceName; 40adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 41adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project // for getInstance(String algorithm, Object param) optimization: 42adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project // previous result 43adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private Provider.Service returnedService; 44adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 45adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project // previous parameter 46adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private String lastAlgorithm; 47adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 48adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project private int refreshNumber; 49adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 50adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 51adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Provider 52adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 53adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public Provider provider; 54adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 55adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 56adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * SPI instance 57adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 58adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public Object spi; 59adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 60adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 61adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Access to package visible api in java.security 62adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 63adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public static SecurityAccess door; 64adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 65adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 66adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Creates a Engine object 67f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes * 68adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param service 69adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 70adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public Engine(String service) { 71adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project this.serviceName = service; 72adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 73adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 74adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 75f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes * 76adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Finds the appropriate service implementation and creates instance of the 77adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * class that implements corresponding Service Provider Interface. 78f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes * 79adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param algorithm 80adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param service 81adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws NoSuchAlgorithmException 82adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 83adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public synchronized void getInstance(String algorithm, Object param) 84adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project throws NoSuchAlgorithmException { 85adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project Provider.Service serv; 86adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 87adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (algorithm == null) { 88897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes throw new NoSuchAlgorithmException("Null algorithm name"); 89adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 90adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project Services.refresh(); 91adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (returnedService != null 922f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes && Util.equalsIgnoreCase(algorithm, lastAlgorithm) 93adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project && refreshNumber == Services.refreshNumber) { 94adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project serv = returnedService; 95adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } else { 96adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (Services.isEmpty()) { 97897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes throw notFound(serviceName, algorithm); 98adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 992f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes serv = Services.getService(new StringBuilder(128) 100f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes .append(serviceName).append(".").append( 1012f9e468ed4985edfd5e351faf2089d91e561e41dElliott Hughes Util.toUpperCase(algorithm)).toString()); 102adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (serv == null) { 103897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes throw notFound(serviceName, algorithm); 104adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 105adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project returnedService = serv; 106adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project lastAlgorithm = algorithm; 107adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project refreshNumber = Services.refreshNumber; 108adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 109adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project spi = serv.newInstance(param); 110adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project this.provider = serv.getProvider(); 111adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 112adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 113897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes private NoSuchAlgorithmException notFound(String serviceName, String algorithm) throws NoSuchAlgorithmException { 114897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes throw new NoSuchAlgorithmException(serviceName + " " + algorithm + " implementation not found"); 115897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes } 116897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes 117adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project /** 118f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes * 119adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * Finds the appropriate service implementation and creates instance of the 120adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * class that implements corresponding Service Provider Interface. 121f33eae7e84eb6d3b0f4e86b59605bb3de73009f3Elliott Hughes * 122adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param algorithm 123adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param service 124adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @param provider 125adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project * @throws NoSuchAlgorithmException 126adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project */ 127adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project public synchronized void getInstance(String algorithm, Provider provider, 128adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project Object param) throws NoSuchAlgorithmException { 129adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 130adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project Provider.Service serv = null; 131adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (algorithm == null) { 132897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes throw new NoSuchAlgorithmException("algorithm == null"); 133adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 134adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project serv = provider.getService(serviceName, algorithm); 135adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project if (serv == null) { 136897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes throw notFound(serviceName, algorithm); 137adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 138adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project spi = serv.newInstance(param); 139adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project this.provider = provider; 140adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project } 141adc854b798c1cfe3bfd4c27d68d5cee38ca617daThe Android Open Source Project 142897538a36c18f4db8f9f68ee566aec0bda842e9fElliott Hughes} 143