/*

 * 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 6877357 6885166

 * @summary IPv6 address does not work

 */

import com.sun.security.auth.module.Krb5LoginModule;

import java.io.*;

import java.util.HashMap;

import java.util.Map;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import javax.security.auth.Subject;

public class IPv6 {

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

        String[][] kdcs = {

                {"simple.host", null},  // These are legal settings

                {"simple.host", ""},

                {"simple.host", "8080"},

                {"0.0.0.1", null},

                {"0.0.0.1", ""},

                {"0.0.0.1", "8080"},

                {"1::1", null},

                {"[1::1]", null},

                {"[1::1]", ""},

                {"[1::1]", "8080"},

                {"[1::1", null},        // Two illegal settings

                {"[1::1]abc", null},

        };

        // Prepares a krb5.conf with every kind of KDC settings

        PrintStream out = new PrintStream(new FileOutputStream("ipv6.conf"));

        out.println("[libdefaults]");

        out.println("default_realm = V6");

        out.println("kdc_timeout = 1");

        out.println("[realms]");

        out.println("V6 = {");

        for (String[] hp: kdcs) {

            if (hp[1] != null) out.println("    kdc = "+hp[0]+":"+hp[1]);

            else out.println("    kdc = " + hp[0]);

        }

        out.println("}");

        out.close();

        System.setProperty("sun.security.krb5.debug", "true");

        System.setProperty("java.security.krb5.conf", "ipv6.conf");

        ByteArrayOutputStream bo = new ByteArrayOutputStream();

        PrintStream po = new PrintStream(bo);

        PrintStream oldout = System.out;

        System.setOut(po);

        try {

            Subject subject = new Subject();

            Krb5LoginModule krb5 = new Krb5LoginModule();

            Map<String, String> map = new HashMap<>();

            Map<String, Object> shared = new HashMap<>();

            map.put("debug", "true");

            map.put("doNotPrompt", "true");

            map.put("useTicketCache", "false");

            map.put("useFirstPass", "true");

            shared.put("javax.security.auth.login.name", "any");

            shared.put("javax.security.auth.login.password", "any".toCharArray());

            krb5.initialize(subject, null, shared, map);

            krb5.login();

        } catch (Exception e) {

            // Ignore

        }

        po.flush();

        System.setOut(oldout);

        BufferedReader br = new BufferedReader(new StringReader(

                new String(bo.toByteArray())));

        int cc = 0;

        Pattern r = Pattern.compile(".*KrbKdcReq send: kdc=(.*) UDP:(\\d+),.*");

        String line;

        while ((line = br.readLine()) != null) {

            Matcher m = r.matcher(line.subSequence(0, line.length()));

            if (m.matches()) {

                System.out.println("------------------");

                System.out.println(line);

                String h = m.group(1), p = m.group(2);

                String eh = kdcs[cc][0], ep = kdcs[cc][1];

                if (eh.charAt(0) == '[') {

                    eh = eh.substring(1, eh.length()-1);

                }

                System.out.println("Expected: " + eh + " : " + ep);

                System.out.println("Actual: " + h + " : " + p);

                if (!eh.equals(h) ||

                        (ep == null || ep.length() == 0) && !p.equals("88") ||

                        (ep != null && ep.length() > 0) && !p.equals(ep)) {

                    throw new Exception("Mismatch");

                }

                cc++;

            }

        }

        if (cc != kdcs.length - 2) {    // 2 illegal settings at the end

            throw new Exception("Not traversed");

        }

    }

}