/*
* 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
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*/
package org.apache.cassandra.security;

import static org.junit.Assert.assertArrayEquals;

import java.io.IOException;

import javax.net.ssl.SSLServerSocket;

import com.google.common.base.Predicates;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;

import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.EncryptionOptions;
import org.apache.cassandra.config.EncryptionOptions.ServerEncryptionOptions;
import org.apache.cassandra.utils.FBUtilities;
import org.junit.BeforeClass;
import org.junit.Test;

public class SSLFactoryTest
{
    @BeforeClass
    public static void beforeClass()
    {
        DatabaseDescriptor.daemonInitialization();
    }

    @Test
    public void testFilterCipherSuites()
    {
        String[] supported = new String[] {"x", "b", "c", "f"};
        String[] desired = new String[] { "k", "a", "b", "c" };
        assertArrayEquals(new String[] { "b", "c" }, SSLFactory.filterCipherSuites(supported, desired));

        desired = new String[] { "c", "b", "x" };
        assertArrayEquals(desired, SSLFactory.filterCipherSuites(supported, desired));
    }

    @Test
    public void testServerSocketCiphers() throws IOException
    {
        ServerEncryptionOptions options = new EncryptionOptions.ServerEncryptionOptions();
        options.keystore = "test/conf/keystore.jks";
        options.keystore_password = "cassandra";
        options.truststore = options.keystore;
        options.truststore_password = options.keystore_password;
        options.cipher_suites = new String[] {
            "TLS_RSA_WITH_AES_128_CBC_SHA", "TLS_RSA_WITH_AES_256_CBC_SHA",
            "TLS_DHE_RSA_WITH_AES_128_CBC_SHA", "TLS_DHE_RSA_WITH_AES_256_CBC_SHA",
            "TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA", "TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA"
        };

        // enabled ciphers must be a subset of configured ciphers with identical order
        try (SSLServerSocket socket = SSLFactory.getServerSocket(options, FBUtilities.getLocalAddress(), 55123))
        {
            String[] enabled = socket.getEnabledCipherSuites();
            String[] wanted = Iterables.toArray(Iterables.filter(Lists.newArrayList(options.cipher_suites),
                                                                 Predicates.in(Lists.newArrayList(enabled))),
                                                String.class);
            assertArrayEquals(wanted, enabled);
        }
    }

}