/*
 * 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.maven.wagon.providers.ssh.knownhost;

import org.apache.maven.wagon.Wagon;
import org.apache.maven.wagon.providers.ssh.SshWagon;
import org.apache.maven.wagon.providers.ssh.TestData;
import org.apache.maven.wagon.repository.Repository;
import org.codehaus.plexus.PlexusTestCase;

/**
 *
 */
public class KnownHostsProviderTestCase extends PlexusTestCase {
    protected KnownHostsProvider okHostsProvider;

    protected KnownHostsProvider failHostsProvider;

    protected KnownHostsProvider changedHostsProvider;

    private SshWagon wagon;

    private Repository source;

    private static final String CORRECT_KEY = TestData.getHostKey();

    private static final String CHANGED_KEY =
            "AAAAB3NzaC1yc2EAAAABIwAAAQEA8VLKkfHl2CNqW+m0603z07dyweWzzdVGQlMPUX4z1264E7M/h+6lPKiOo+u49CL7eQVA+FtW"
                    + "TZoJ3oBAMABcKnHx41TnSpQUkbdR6rzyC6IG1lXiVtEjG2w7DUnxpCtVo5PaQuJobwoXv5NNL3vx03THPgcDJquLPWvGnDWhnXoEh"
                    + "3/6c7rprwT+PrjZ6LIT35ZCUGajoehhF151oNbFMQHllfR6EAiZIP0z0nIVI+Jiv6g+XZapumVPVYjdOfxvLKQope1H9HJamT3bDI"
                    + "m8mkebUB10DzQJYxFt4/0wiNH3L4jsIFn+CiW1/IQm5yyff1CUO87OqVbtp9BlaXZNmw==";

    /**
     * tests what happens if the remote host has a different key than the one
     * we expect
     *
     * @throws Exception on error
     */
    public void testIncorrectKey() throws Exception {
        wagon.setKnownHostsProvider(failHostsProvider);

        try {
            wagon.connect(source);

            fail("Should not have successfully connected - host is not known");
        } catch (UnknownHostException e) {
            // ok
        }
    }

    /**
     * tests what happens if the remote host has changed since being recorded.
     *
     * @throws Exception on error
     */
    public void testChangedKey() throws Exception {
        wagon.setKnownHostsProvider(changedHostsProvider);

        try {
            wagon.connect(source);

            fail("Should not have successfully connected - host is changed");
        } catch (KnownHostChangedException e) {
            // ok
        }
    }

    /**
     * tests what happens if the remote host has the expected key
     *
     * @throws Exception on error
     */
    public void testCorrectKey() throws Exception {
        wagon.setKnownHostsProvider(okHostsProvider);

        wagon.connect(source);

        assertTrue(true);
    }

    protected void setUp() throws Exception {
        super.setUp();
        source = new Repository("test", "scp://" + TestData.getUserName() + "@" + TestData.getHostname() + "/tmp/foo");

        wagon = (SshWagon) lookup(Wagon.ROLE, "scp");
        wagon.setInteractive(false);

        this.okHostsProvider = new SingleKnownHostProvider(TestData.getHostname(), CORRECT_KEY);
        this.failHostsProvider = new SingleKnownHostProvider("beaver.codehaus.org", CORRECT_KEY);
        this.changedHostsProvider = new SingleKnownHostProvider(TestData.getHostname(), CHANGED_KEY);
    }
}