/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.harmony.xnet.provider.jsse;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.security.cert.CertificateEncodingException;
import java.security.cert.CertificateException;
import java.security.cert.CertificateFactory;
import java.security.cert.X509Certificate;
import java.util.Arrays;

import junit.framework.TestCase;

/**
 * Tests for <code>CertificateMessage</code> constructor and methods
 */
public class CertificateMessageTest extends TestCase {

    private static String base64certEncoding = "-----BEGIN CERTIFICATE-----\n"
            + "MIIC+jCCAragAwIBAgICAiswDAYHKoZIzjgEAwEBADAdMRswGQYDVQQKExJDZXJ0a"
            + "WZpY2F0ZSBJc3N1ZXIwIhgPMTk3MDAxMTIxMzQ2NDBaGA8xOTcwMDEyNDAzMzMyMF"
            + "owHzEdMBsGA1UEChMUU3ViamVjdCBPcmdhbml6YXRpb24wGTAMBgcqhkjOOAQDAQE"
            + "AAwkAAQIDBAUGBwiBAgCqggIAVaOCAhQwggIQMA8GA1UdDwEB/wQFAwMBqoAwEgYD"
            + "VR0TAQH/BAgwBgEB/wIBBTAUBgNVHSABAf8ECjAIMAYGBFUdIAAwZwYDVR0RAQH/B"
            + "F0wW4EMcmZjQDgyMi5OYW1lggdkTlNOYW1lpBcxFTATBgNVBAoTDE9yZ2FuaXphdG"
            + "lvboYaaHR0cDovL3VuaWZvcm0uUmVzb3VyY2UuSWSHBP///wCIByoDolyDsgMwDAY"
            + "DVR0eAQH/BAIwADAMBgNVHSQBAf8EAjAAMIGZBgNVHSUBAf8EgY4wgYsGBFUdJQAG"
            + "CCsGAQUFBwMBBggrBgEFBQcDAQYIKwYBBQUHAwIGCCsGAQUFBwMDBggrBgEFBQcDB"
            + "AYIKwYBBQUHAwUGCCsGAQUFBwMGBggrBgEFBQcDBwYIKwYBBQUHAwgGCCsGAQUFBw"
            + "MJBggrBgEFBQgCAgYKKwYBBAGCNwoDAwYJYIZIAYb4QgQBMA0GA1UdNgEB/wQDAgE"
            + "BMA4GBCpNhgkBAf8EAwEBATBkBgNVHRIEXTBbgQxyZmNAODIyLk5hbWWCB2ROU05h"
            + "bWWkFzEVMBMGA1UEChMMT3JnYW5pemF0aW9uhhpodHRwOi8vdW5pZm9ybS5SZXNvd"
            + "XJjZS5JZIcE////AIgHKgOiXIOyAzAJBgNVHR8EAjAAMAoGA1UdIwQDAQEBMAoGA1"
            + "UdDgQDAQEBMAoGA1UdIQQDAQEBMAwGByqGSM44BAMBAQADMAAwLQIUAL4QvoazNWP"
            + "7jrj84/GZlhm09DsCFQCBKGKCGbrP64VtUt4JPmLjW1VxQA==\n"
            + "-----END CERTIFICATE-----\n";

    /*
      * Test for CertificateMessage(null) and
      * CertificateMessage(HandshakeIODataStream, int)
      */
    public void testCertificateMessage1() throws Exception {

        CertificateMessage message = new CertificateMessage(null);
        assertEquals("incorrect type", Handshake.CERTIFICATE, message.getType());
        assertEquals("incorrect message", 3, message.length());
        assertEquals("incorrect message", 0, message.certs.length);

        HandshakeIODataStream out = new HandshakeIODataStream();
        message.send(out);
        byte[] encoded = out.getData(1000);
        assertEquals("incorrect out data length", message.length(), encoded.length);

        HandshakeIODataStream in = new HandshakeIODataStream();
        in.append(encoded);

        CertificateMessage message_2 = new CertificateMessage(in, message.length());
        assertEquals("incorrect message_2", 3, message_2.length());
        assertEquals("incorrect message_2", 0, message_2.certs.length);
    }

    /*
      * Test for void CertificateMessage(X509Certificate[]),
      * CertificateMessage(HandshakeIODataStream, int)
      */
    public void testCertificateMessage2() throws Exception {
        CertificateFactory certFactory = CertificateFactory.getInstance("X509");

        ByteArrayInputStream bais = new ByteArrayInputStream(base64certEncoding
                .getBytes("UTF-8"));
        X509Certificate cert = (X509Certificate) certFactory.generateCertificate(bais);
        CertificateMessage message = new CertificateMessage(
                new X509Certificate[] { cert });
        assertEquals("incorrect type", Handshake.CERTIFICATE, message.getType());

        assertTrue("incorrect cert encoding", Arrays.equals(message.certs[0]
                .getEncoded(), cert.getEncoded()));

        HandshakeIODataStream out = new HandshakeIODataStream();
        message.send(out);
        byte[] encoded = out.getData(1000);
        assertEquals("incorrect out data length", message.length(), encoded.length);

        HandshakeIODataStream in = new HandshakeIODataStream();
        in.append(encoded);
        CertificateMessage message_2 = new CertificateMessage(in, message.length());
        assertEquals("Incorrect message decoding", message.certs.length, message_2.certs.length);
        assertTrue("incorrect cert encoding", Arrays.equals(message.certs[0]
                .getEncoded(), message_2.certs[0].getEncoded()));

        in.append(encoded);
        try {
            message_2 = new CertificateMessage(in, message.length() - 1);
            fail("Small length: No expected AlertException");
        } catch (AlertException e) {
        }

        in.append(encoded);
        in.append(new byte[] { 1, 2, 3 });
        try {
            message_2 = new CertificateMessage(in, message.length() + 3);
            fail("Extra bytes: No expected AlertException ");
        } catch (AlertException e) {
        }
    }

}