1 /* 2 * Copyright (c) 1996, 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.security.provider; 27 28 import java.util.*; 29 import java.security.*; 30 31 import sun.security.action.PutAllAction; 32 33 import sun.security.rsa.SunRsaSignEntries; 34 35 /** 36 * Provider used for verification of signed JAR files *if* the Sun and 37 * SunRsaSign main classes have been removed. Otherwise, this provider is not 38 * necessary and registers no algorithms. This functionality only exists to 39 * support a use case required by a specific customer and is not generally 40 * supported. 41 * 42 * @since 1.7 43 * @author Andreas Sterbenz 44 */ 45 public final class VerificationProvider extends Provider { 46 47 private static final long serialVersionUID = 7482667077568930381L; 48 49 private static final boolean ACTIVE; 50 51 static { 52 boolean b; 53 try { 54 Class.forName("sun.security.provider.Sun"); 55 Class.forName("sun.security.rsa.SunRsaSign"); 56 b = false; 57 } catch (ClassNotFoundException e) { 58 b = true; 59 } 60 ACTIVE = b; 61 } 62 63 public VerificationProvider() { 64 super("SunJarVerification", 1.7, "Jar Verification Provider"); 65 // register all algorithms normally registered by the Sun and SunRsaSign 66 // providers, but only if they are missing 67 if (ACTIVE == false) { 68 return; 69 } 70 71 // if there is no security manager installed, put directly into 72 // the provider. Otherwise, create a temporary map and use a 73 // doPrivileged() call at the end to transfer the contents 74 if (System.getSecurityManager() == null) { 75 SunEntries.putEntries(this); 76 SunRsaSignEntries.putEntries(this); 77 } else { 78 // use LinkedHashMap to preserve the order of the PRNGs 79 Map<Object, Object> map = new LinkedHashMap<>(); 80 SunEntries.putEntries(map); 81 SunRsaSignEntries.putEntries(map); 82 AccessController.doPrivileged(new PutAllAction(this, map)); 83 } 84 } 85 86 }