1 /* 2 * Copyright (c) 2016, 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 build.tools.customizesecurityfile; 27 28 import java.io.*; 29 30 /** 31 * Alters the crypto.policy security property 32 * if --enable-unlimited-crypto is enabled. 33 */ 34 public class CryptoLevel { 35 36 private static final String PROP_NAME = "crypto.policy"; 37 38 public static void main(String[] args) throws Exception { 39 boolean fileModified = false; 40 41 if (args.length < 3) { 42 System.err.println("Usage: java CryptoLevel" + 43 "[input java.security file name] " + 44 "[output java.security file name] " + 45 "[unlimited|limited]"); 46 System.exit(1); 47 } 48 if (!args[2].equals("unlimited") && !args[2].equals("limited")) { 49 System.err.println("CryptoLevel error: Unexpected " + 50 "input: " + args[2]); 51 System.exit(1); 52 } 53 54 try (FileReader fr = new FileReader(args[0]); 55 BufferedReader br = new BufferedReader(fr); 56 FileWriter fw = new FileWriter(args[1]); 57 BufferedWriter bw = new BufferedWriter(fw)) 58 { 59 // parse the file line-by-line, looking for crypto.policy 60 String line = br.readLine(); 61 while (line != null) { 62 if (line.startsWith('#' + PROP_NAME) || 63 line.startsWith(PROP_NAME)) { 64 writeLine(bw, PROP_NAME + "=" + args[2]); 65 fileModified = true; 66 } else { 67 writeLine(bw, line); 68 } 69 line = br.readLine(); 70 } 71 if (!fileModified) { 72 //no previous setting seen. Insert at end 73 writeLine(bw, PROP_NAME + "=" + args[2]); 74 } 75 bw.flush(); 76 } 77 } 78 79 private static void writeLine(BufferedWriter bw, String line) 80 throws IOException 81 { 82 bw.write(line); 83 bw.newLine(); 84 } 85 }