Java example source code file (GetInstance.java)

This example Java source code file (GetInstance.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

badparam, exception, file, foopolicy, getinstance, getinstancetest, illegalargumentexception, net, network, nosuchalgorithmexception, notgranted, policy, security, securityexception, securitypermission, sun, sunrsasign, www

The GetInstance.java Java example source code

/*
 * Copyright (c) 2005, 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.
 *
 * 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 5100561
 * @bug 6273812
 * @summary Can not explicitly create a java.security.Policy object from a file
 * @build GetInstancePolicySpi GetInstanceProvider
 * @run main/othervm/policy=GetInstance.policy GetInstance
 */

import java.security.*;

import java.io.File;
import java.net.URI;
import sun.net.www.ParseUtil;

public class GetInstance {

    private static final String JAVA_POLICY = "JavaPolicy";

    private static class BadParam implements Policy.Parameters { }

    public static void main(String[] args) throws Exception {

        int testnum = 1;
        GetInstance gi = new GetInstance();

        testnum = gi.testDefault(testnum);
        testnum = gi.testStringProvider(testnum);
        testnum = gi.testProvider(testnum);
        testnum = gi.testCustomImpl(testnum);
        testnum = gi.testBadParam(testnum);

        // make this go last because we don't want to leave its policy set
        // for other tests
        testnum = gi.testURIParam(testnum);
    }

    private int testDefault(int testnum) throws Exception {
        // get an instance of the default PolicySpiFile
        Policy p = Policy.getInstance(JAVA_POLICY, null);
        doTest(p, testnum++);
        Policy.setPolicy(p);
        doTestSM(testnum++);

        // get an instance of FooPolicy
        try {
            p = Policy.getInstance("FooPolicy", null);
            throw new SecurityException("test " + testnum++ + " failed");
        } catch (NoSuchAlgorithmException nsae) {
            // good
            System.out.println("test " + testnum++ + " passed");
        }

        return testnum;
    }

    private int testStringProvider(int testnum) throws Exception {
        // get an instance of JavaPolicy from SUN
        Policy p = Policy.getInstance(JAVA_POLICY, null, "SUN");
        doTest(p, testnum++);
        Policy.setPolicy(p);
        doTestSM(testnum++);

        // get an instance of JavaPolicy from SunRsaSign
        try {
            p = Policy.getInstance(JAVA_POLICY, null, "SunRsaSign");
            throw new SecurityException("test " + testnum++ + " failed");
        } catch (NoSuchAlgorithmException nsae) {
            // good
            System.out.println("test " + testnum++ + " passed");
        }

        // get an instance of JavaPolicy from FOO
        try {
            p = Policy.getInstance(JAVA_POLICY, null, "FOO");
            throw new SecurityException("test " + testnum++ + " failed");
        } catch (NoSuchProviderException nspe) {
            // good
            System.out.println("test " + testnum++ + " passed");
        }

        return testnum;
    }

    private int testProvider(int testnum) throws Exception {
        // get an instance of JavaPolicy from SUN
        Policy p = Policy.getInstance(JAVA_POLICY,
                                null,
                                Security.getProvider("SUN"));
        doTest(p, testnum++);
        Policy.setPolicy(p);
        doTestSM(testnum++);

        // get an instance of JavaPolicy from SunRsaSign
        try {
            p = Policy.getInstance(JAVA_POLICY,
                                null,
                                Security.getProvider("SunRsaSign"));
            throw new SecurityException("test " + testnum++ + " failed");
        } catch (NoSuchAlgorithmException nsae) {
            // good
            System.out.println("test " + testnum++ + " passed");
        }

        return testnum;
    }

    private int testBadParam(int testnum) throws Exception {

        // pass bad param

        try {
            Policy p = Policy.getInstance(JAVA_POLICY,
                                new BadParam());
            throw new SecurityException("test " + testnum++ + " failed");
        } catch (IllegalArgumentException iae) {
            // good
            System.out.println("test " + testnum++ + " passed");
        }

        try {
            Policy p = Policy.getInstance(JAVA_POLICY,
                                new BadParam(),
                                "SUN");
            throw new SecurityException("test " + testnum++ + " failed");
        } catch (IllegalArgumentException iae) {
            // good
            System.out.println("test " + testnum++ + " passed");
        }

        try {
            Policy p = Policy.getInstance(JAVA_POLICY,
                                new BadParam(),
                                Security.getProvider("SUN"));
            throw new SecurityException("test " + testnum++ + " failed");
        } catch (IllegalArgumentException iae) {
            // good
            System.out.println("test " + testnum++ + " passed");
        }

        return testnum;
    }

    private int testURIParam(int testnum) throws Exception {
        // get an instance of JavaPolicy from SUN and have it read from the URL

        File file = new File(System.getProperty("test.src", "."),
                                "GetInstance.policyURL");
        URI uri = file.toURI();
        Policy p = Policy.getInstance(JAVA_POLICY, new URIParameter(uri));

        doTest(p, testnum++);
        Policy.setPolicy(p);
        doTestSM(testnum++);

        return testnum;
    }

    private int testCustomImpl(int testnum) throws Exception {
        Provider customProvider = new GetInstanceProvider();
        Policy p = Policy.getInstance("GetInstancePolicySpi",
                                null,
                                customProvider);

        // doTest has a case that will not work with custom policies,
        // so do not call it
        //
        // doTest(p, testnum++);

        Policy.setPolicy(p);
        doTestSM(testnum++);

        return testnum;
    }

    private void doTest(Policy p, int testnum) throws Exception {

        // check granted perm
        if (p.implies(this.getClass().getProtectionDomain(),
                        new SecurityPermission("GetInstanceTest"))) {
            System.out.println("test " + testnum + ".1 passed");
        } else {
            throw new SecurityException("test " + testnum + ".1 failed");
        }

        // check perm not granted
        if (p.implies(this.getClass().getProtectionDomain(),
                        new SecurityPermission("NotGranted"))) {
            throw new SecurityException("test " + testnum + ".2 failed");
        } else {
            System.out.println("test " + testnum + ".2 passed");
        }

        // test getProvider
        if ("SUN".equals(p.getProvider().getName())) {
            System.out.println("test " + testnum + ".3 passed");
        } else {
            throw new SecurityException("test " + testnum + ".3 failed");
        }

        // test getType
        if (JAVA_POLICY.equals(p.getType())) {
            System.out.println("test " + testnum + ".4 passed");
        } else {
            throw new SecurityException("test " + testnum + ".4 failed");
        }
    }

    private void doTestSM(int testnum) throws Exception {

        // check granted perm
        System.getSecurityManager().checkPermission
                        (new SecurityPermission("GetInstanceTest"));
        System.out.println("test " + testnum + ".1 passed");

        // check perm not granted
        try {
            System.getSecurityManager().checkPermission
                        (new SecurityPermission("NotGranted"));
            throw new RuntimeException("test " + testnum + ".2 failed");
        } catch (SecurityException se) {
            System.out.println("test " + testnum + ".2 passed");
        }
    }
}