jdk/test/javax/crypto/CryptoPermissions/CryptoPolicyFallback.java
changeset 42365 5e640c2994d6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/javax/crypto/CryptoPermissions/CryptoPolicyFallback.java	Mon Dec 05 17:04:02 2016 -0800
@@ -0,0 +1,119 @@
+/*
+ * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8169335
+ * @summary Add a crypto policy fallback in case Security Property
+ * 'crypto.policy' does not exist.
+ * @run main/othervm CryptoPolicyFallback
+ */
+import java.io.*;
+import java.nio.file.*;
+import java.util.stream.*;
+import javax.crypto.*;
+
+/*
+ * Take the current java.security file, strip out the 'crypto.policy' entry,
+ * write to a new file in the current directory, then use that file as the
+ * replacement java.security file.  This test will fail if the crypto.policy
+ * entry doesn't match the compiled in value.
+ */
+public class CryptoPolicyFallback {
+
+    private static final String FILENAME = "java.security";
+
+    public static void main(String[] args) throws Exception {
+
+        String javaHome = System.getProperty("java.home");
+
+        Path path = Paths.get(javaHome, "conf", "security", FILENAME);
+
+        /*
+         * Get the default value.
+         */
+        String defaultPolicy;
+        try (Stream<String> lines = Files.lines(path)) {
+            /*
+             * If the input java.security file is malformed
+             * (missing crypto.policy, attribute/no value, etc), throw
+             * exception.  split() might throw AIOOB which
+             * is ok behavior.
+             */
+            defaultPolicy = lines.filter(x -> x.startsWith("crypto.policy="))
+                    .findFirst().orElseThrow(
+                            () -> new Exception("Missing crypto.policy"))
+                    .split("=")[1].trim();
+        }
+
+        /*
+         * We know there is at least one crypto.policy entry, strip
+         * all of them out of the java.security file.
+         */
+        try (PrintWriter out = new PrintWriter(FILENAME);
+                Stream<String> lines = Files.lines(path)) {
+            lines.filter(x -> !x.trim().startsWith("crypto.policy="))
+                    .forEach(out::println);
+        }
+
+        /*
+         * "-Djava.security.properties==file" does a complete replacement
+         * of the system java.security file.  i.e. value must be "=file"
+         */
+        System.setProperty("java.security.properties", "=" + FILENAME);
+
+        /*
+         * Find out expected value.
+         */
+        int expected;
+        switch (defaultPolicy) {
+        case "limited":
+            expected = 128;
+            break;
+        case "unlimited":
+            expected = Integer.MAX_VALUE;
+            break;
+        default:
+            throw new Exception(
+                    "Unexpected Default Policy Value: " + defaultPolicy);
+        }
+
+        /*
+         * Do the actual check.  If the JCE Framework can't initialize
+         * an Exception is normally thrown here.
+         */
+        int maxKeyLen = Cipher.getMaxAllowedKeyLength("AES");
+
+        System.out.println("Default Policy: " + defaultPolicy
+                + "\nExpected max AES key length: " + expected
+                + ", received : " + maxKeyLen);
+
+        if (expected != maxKeyLen) {
+            throw new Exception("Wrong Key Length size!");
+        }
+
+        System.out.println("PASSED!");
+    }
+}