Java example source code file (BasicProc.java)

This example Java source code file (BasicProc.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

basicproc, conf, context, exception, hello, host, krb5_config, ktab, oid, pass, privatecredentialpermission, proc, realm, string

The BasicProc.java Java example source code

/*
 * Copyright (c) 2013, 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 8009977
 * @summary A test library to launch multiple Java processes
 * @library ../../../../java/security/testlibrary/
 * @compile -XDignore.symbol.file BasicProc.java
 * @run main/othervm BasicProc
 */

import java.io.File;
import org.ietf.jgss.Oid;

import javax.security.auth.PrivateCredentialPermission;

public class BasicProc {

    static String CONF = "krb5.conf";
    static String KTAB = "ktab";
    public static void main(String[] args) throws Exception {
        String HOST = "localhost";
        String SERVER = "server/" + HOST;
        String BACKEND = "backend/" + HOST;
        String USER = "user";
        char[] PASS = "password".toCharArray();
        String REALM = "REALM";

        Oid oid = new Oid("1.2.840.113554.1.2.2");

        if (args.length == 0) {
            System.setProperty("java.security.krb5.conf", CONF);
            KDC kdc = KDC.create(REALM, HOST, 0, true);
            kdc.addPrincipal(USER, PASS);
            kdc.addPrincipalRandKey("krbtgt/" + REALM);
            kdc.addPrincipalRandKey(SERVER);
            kdc.addPrincipalRandKey(BACKEND);

            String cwd = System.getProperty("user.dir");
            kdc.writeKtab(KTAB);
            KDC.saveConfig(CONF, kdc, "forwardable = true");

            Proc pc = Proc.create("BasicProc")
                    .args("client")
                    .prop("java.security.krb5.conf", CONF)
                    .prop("java.security.manager", "")
                    .perm(new java.util.PropertyPermission(
                            "sun.security.krb5.principal", "read"))
                    .perm(new javax.security.auth.AuthPermission(
                            "modifyPrincipals"))
                    .perm(new javax.security.auth.AuthPermission(
                            "modifyPrivateCredentials"))
                    .perm(new javax.security.auth.AuthPermission("doAs"))
                    .perm(new javax.security.auth.kerberos.ServicePermission(
                            "krbtgt/" + REALM + "@" + REALM, "initiate"))
                    .perm(new javax.security.auth.kerberos.ServicePermission(
                            "server/localhost@" + REALM, "initiate"))
                    .perm(new javax.security.auth.kerberos.DelegationPermission(
                            "\"server/localhost@" + REALM + "\" " +
                                    "\"krbtgt/" + REALM + "@" + REALM + "\""))
                    .debug("C")
                    .start();
            Proc ps = Proc.create("BasicProc")
                    .args("server")
                    .prop("java.security.krb5.conf", CONF)
                    .prop("java.security.manager", "")
                    .perm(new java.util.PropertyPermission(
                            "sun.security.krb5.principal", "read"))
                    .perm(new javax.security.auth.AuthPermission(
                            "modifyPrincipals"))
                    .perm(new javax.security.auth.AuthPermission(
                            "modifyPrivateCredentials"))
                    .perm(new javax.security.auth.AuthPermission("doAs"))
                    .perm(new PrivateCredentialPermission(
                            "javax.security.auth.kerberos.KeyTab * \"*\"",
                            "read"))
                    .perm(new javax.security.auth.kerberos.ServicePermission(
                            "server/localhost@" + REALM, "accept"))
                    .perm(new java.io.FilePermission(
                            cwd + File.separator + KTAB, "read"))
                    .perm(new javax.security.auth.kerberos.ServicePermission(
                            "backend/localhost@" + REALM, "initiate"))
                    .debug("S")
                    .start();
            Proc pb = Proc.create("BasicProc")
                    .args("backend")
                    .prop("java.security.krb5.conf", CONF)
                    .prop("java.security.manager", "")
                    .perm(new java.util.PropertyPermission(
                            "sun.security.krb5.principal", "read"))
                    .perm(new javax.security.auth.AuthPermission(
                            "modifyPrincipals"))
                    .perm(new javax.security.auth.AuthPermission(
                            "modifyPrivateCredentials"))
                    .perm(new javax.security.auth.AuthPermission("doAs"))
                    .perm(new PrivateCredentialPermission(
                            "javax.security.auth.kerberos.KeyTab * \"*\"",
                            "read"))
                    .perm(new javax.security.auth.kerberos.ServicePermission(
                            "backend/localhost@" + REALM, "accept"))
                    .perm(new java.io.FilePermission(
                            cwd + File.separator + KTAB, "read"))
                    .debug("B")
                    .start();

            // Client and server handshake
            String token = pc.readData();
            ps.println(token);
            token = ps.readData();
            pc.println(token);
            // Server and backend handshake
            token = ps.readData();
            pb.println(token);
            token = pb.readData();
            ps.println(token);
            // wrap/unwrap/getMic/verifyMic and plain text
            token = ps.readData();
            pb.println(token);
            token = pb.readData();
            ps.println(token);
            token = pb.readData();
            ps.println(token);

            if ((pc.waitFor() | ps.waitFor() | pb.waitFor()) != 0) {
                throw new Exception();
            }
        } else if (args[0].equals("client")) {
            Context c = Context.fromUserPass(USER, PASS, false);
            c.startAsClient(SERVER, oid);
            c.x().requestCredDeleg(true);
            Proc.binOut(c.take(new byte[0]));
            byte[] token = Proc.binIn();
            c.take(token);
        } else if (args[0].equals("server")) {
            Context s = Context.fromUserKtab(SERVER, KTAB, true);
            s.startAsServer(oid);
            byte[] token = Proc.binIn();
            token = s.take(token);
            Proc.binOut(token);
            Context s2 = s.delegated();
            s2.startAsClient(BACKEND, oid);
            Proc.binOut(s2.take(new byte[0]));
            token = Proc.binIn();
            s2.take(token);
            byte[] msg = "Hello".getBytes();
            Proc.binOut(s2.wrap(msg, true));
            s2.verifyMic(Proc.binIn(), msg);
            String in = Proc.textIn();
            if (!in.equals("Hello")) {
                throw new Exception();
            }
        } else if (args[0].equals("backend")) {
            Context b = Context.fromUserKtab(BACKEND, KTAB, true);
            b.startAsServer(oid);
            byte[] token = Proc.binIn();
            Proc.binOut(b.take(token));
            byte[] msg = b.unwrap(Proc.binIn(), true);
            Proc.binOut(b.getMic(msg));
            Proc.textOut(new String(msg));
        }
    }
    // create a native server
    private static Proc ns(Proc p) throws Exception {
        return p
            .env("KRB5_CONFIG", CONF)
            .env("KRB5_KTNAME", KTAB)
            .prop("sun.security.jgss.native", "true")
            .prop("javax.security.auth.useSubjectCredsOnly", "false")
            .prop("sun.security.nativegss.debug", "true");
    }
}