120 lines
4.2 KiB
Java
120 lines
4.2 KiB
Java
/*
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* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8169335
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* @summary Add a crypto policy fallback in case Security Property
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* 'crypto.policy' does not exist.
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* @run main/othervm CryptoPolicyFallback
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*/
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import java.io.*;
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import java.nio.file.*;
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import java.util.stream.*;
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import javax.crypto.*;
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/*
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* Take the current java.security file, strip out the 'crypto.policy' entry,
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* write to a new file in the current directory, then use that file as the
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* replacement java.security file. This test will fail if the crypto.policy
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* entry doesn't match the compiled in value.
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*/
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public class CryptoPolicyFallback {
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private static final String FILENAME = "java.security";
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public static void main(String[] args) throws Exception {
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String javaHome = System.getProperty("java.home");
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Path path = Paths.get(javaHome, "conf", "security", FILENAME);
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/*
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* Get the default value.
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*/
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String defaultPolicy;
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try (Stream<String> lines = Files.lines(path)) {
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/*
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* If the input java.security file is malformed
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* (missing crypto.policy, attribute/no value, etc), throw
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* exception. split() might throw AIOOB which
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* is ok behavior.
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*/
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defaultPolicy = lines.filter(x -> x.startsWith("crypto.policy="))
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.findFirst().orElseThrow(
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() -> new Exception("Missing crypto.policy"))
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.split("=")[1].trim();
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}
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/*
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* We know there is at least one crypto.policy entry, strip
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* all of them out of the java.security file.
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*/
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try (PrintWriter out = new PrintWriter(FILENAME);
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Stream<String> lines = Files.lines(path)) {
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lines.filter(x -> !x.trim().startsWith("crypto.policy="))
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.forEach(out::println);
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}
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/*
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* "-Djava.security.properties==file" does a complete replacement
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* of the system java.security file. i.e. value must be "=file"
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*/
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System.setProperty("java.security.properties", "=" + FILENAME);
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/*
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* Find out expected value.
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*/
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int expected;
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switch (defaultPolicy) {
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case "limited":
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expected = 128;
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break;
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case "unlimited":
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expected = Integer.MAX_VALUE;
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break;
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default:
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throw new Exception(
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"Unexpected Default Policy Value: " + defaultPolicy);
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}
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/*
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* Do the actual check. If the JCE Framework can't initialize
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* an Exception is normally thrown here.
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*/
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int maxKeyLen = Cipher.getMaxAllowedKeyLength("AES");
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System.out.println("Default Policy: " + defaultPolicy
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+ "\nExpected max AES key length: " + expected
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+ ", received : " + maxKeyLen);
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if (expected != maxKeyLen) {
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throw new Exception("Wrong Key Length size!");
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}
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System.out.println("PASSED!");
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}
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}
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