#region License
/*
 * ClientSslAuthConfiguration.cs
 *
 * The MIT License
 *
 * Copyright (c) 2014 liryna
 * Copyright (c) 2014 sta.blockhead
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
#endregion

#region Authors
/*
 * Authors:
 * - Liryna <liryna.stark@gmail.com>
 */
#endregion

using System.Net.Security;
using System.Security.Authentication;
using System.Security.Cryptography.X509Certificates;

namespace WebSocketSharp.Net
{
  /// <summary>
  /// Stores the parameters used to configure a <see cref="SslStream"/> instance as a client.
  /// </summary>
  public class ClientSslAuthConfiguration
  {
    #region Private Fields

    private RemoteCertificateValidationCallback _serverCertValidationCallback;

    #endregion

    #region Public Constructors

    /// <summary>
    /// Initializes a new instance of the <see cref="ClientSslAuthConfiguration"/> class with
    /// the specified <paramref name="targetHost"/>.
    /// </summary>
    /// <param name="targetHost">
    /// A <see cref="string"/> that represents the name of the server that shares
    /// a secure connection.
    /// </param>
    public ClientSslAuthConfiguration (string targetHost)
      : this (targetHost, null, SslProtocols.Default, false)
    {
    }

    /// <summary>
    /// Initializes a new instance of the <see cref="ClientSslAuthConfiguration"/> class with
    /// the specified <paramref name="targetHost"/>, <paramref name="clientCertificates"/>,
    /// <paramref name="enabledSslProtocols"/>, and <paramref name="checkCertificateRevocation"/>.
    /// </summary>
    /// <param name="targetHost">
    /// A <see cref="string"/> that represents the name of the server that shares
    /// a secure connection.
    /// </param>
    /// <param name="clientCertificates">
    /// A <see cref="X509CertificateCollection"/> that contains client certificates.
    /// </param>
    /// <param name="enabledSslProtocols">
    /// The <see cref="SslProtocols"/> enum value that represents the protocols used for
    /// authentication.
    /// </param>
    /// <param name="checkCertificateRevocation">
    /// <c>true</c> if the certificate revocation list is checked during authentication;
    /// otherwise, <c>false</c>.
    /// </param>
    public ClientSslAuthConfiguration (
      string targetHost,
      X509CertificateCollection clientCertificates,
      SslProtocols enabledSslProtocols,
      bool checkCertificateRevocation)
    {
      TargetHost = targetHost;
      ClientCertificates = clientCertificates;
      EnabledSslProtocols = enabledSslProtocols;
      CheckCertificateRevocation = checkCertificateRevocation;
    }

    #endregion

    #region Public Properties

    /// <summary>
    /// Gets or sets a value indicating whether the certificate revocation list is checked
    /// during authentication.
    /// </summary>
    /// <value>
    /// <c>true</c> if the certificate revocation list is checked; otherwise, <c>false</c>.
    /// </value>
    public bool CheckCertificateRevocation { get; set; }

    /// <summary>
    /// Gets or sets the collection that contains client certificates.
    /// </summary>
    /// <value>
    /// A <see cref="X509CertificateCollection"/> that contains client certificates.
    /// </value>
    public X509CertificateCollection ClientCertificates { get; set; }

    /// <summary>
    /// Gets or sets the SSL protocols used for authentication.
    /// </summary>
    /// <value>
    /// The <see cref="SslProtocols"/> enum value that represents the protocols used for
    /// authentication.
    /// </value>
    public SslProtocols EnabledSslProtocols { get; set; }

    /// <summary>
    /// Gets or sets the callback used to validate the certificate supplied by the server.
    /// </summary>
    /// <value>
    /// A <see cref="RemoteCertificateValidationCallback"/> delegate that references the method
    /// used to validate the server certificate. The default value is a function that only returns
    /// <c>true</c>.
    /// </value>
    public RemoteCertificateValidationCallback ServerCertificateValidationCallback {
      get {
        return _serverCertValidationCallback ??
               (_serverCertValidationCallback =
                 (sender, certificate, chain, sslPolicyErrors) => true);
      }

      set {
        _serverCertValidationCallback = value;
      }
    }

    /// <summary>
    /// Gets or sets the name of the server that shares a secure connection.
    /// </summary>
    /// <value>
    /// A <see cref="string"/> that represents the name of the server that shares
    /// a secure connection.
    /// </value>
    public string TargetHost { get; set; }

    #endregion
  }
}