File: FrameworkFork\System.ServiceModel\System\ServiceModel\Security\WindowsClientCredential.cs
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Project: src\src\dotnet-svcutil\lib\src\dotnet-svcutil-lib.csproj (dotnet-svcutil-lib)
// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
using System.Net;
using System.Security.Principal;
 
namespace System.ServiceModel.Security
{
    public sealed class WindowsClientCredential
    {
        internal const TokenImpersonationLevel DefaultImpersonationLevel = TokenImpersonationLevel.Identification;
        private TokenImpersonationLevel _allowedImpersonationLevel = DefaultImpersonationLevel;
        private NetworkCredential _windowsCredentials;
        private bool _allowNtlm = SspiSecurityTokenProvider.DefaultAllowNtlm;
        private bool _isReadOnly;
 
        internal WindowsClientCredential()
        {
        }
 
        internal WindowsClientCredential(WindowsClientCredential other)
        {
            if (other._windowsCredentials != null)
                _windowsCredentials = SecurityUtils.GetNetworkCredentialsCopy(other._windowsCredentials);
            _allowedImpersonationLevel = other._allowedImpersonationLevel;
            _allowNtlm = other._allowNtlm;
            _isReadOnly = other._isReadOnly;
        }
 
        public TokenImpersonationLevel AllowedImpersonationLevel
        {
            get
            {
                return _allowedImpersonationLevel;
            }
            set
            {
                ThrowIfImmutable();
 
                if (((value == TokenImpersonationLevel.None) || (value == TokenImpersonationLevel.Anonymous))
                    )
                {
                    throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentException(string.Format(SRServiceModel.UnsupportedTokenImpersonationLevel, "AllowedImpersonationLevel", value.ToString())));
                }
 
                _allowedImpersonationLevel = value;
            }
        }
 
        public NetworkCredential ClientCredential
        {
            get
            {
                if (_windowsCredentials == null)
                    _windowsCredentials = new NetworkCredential();
                return _windowsCredentials;
            }
            set
            {
                ThrowIfImmutable();
                _windowsCredentials = value;
            }
        }
 
        [ObsoleteAttribute("This property is deprecated and is maintained for backward compatibility only. The local machine policy will be used to determine if NTLM should be used.")]
        public bool AllowNtlm
        {
            get
            {
                return _allowNtlm;
            }
            set
            {
                ThrowIfImmutable();
                _allowNtlm = value;
            }
        }
 
        internal void MakeReadOnly()
        {
            _isReadOnly = true;
        }
 
        private void ThrowIfImmutable()
        {
            if (_isReadOnly)
            {
                throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SRServiceModel.ObjectIsReadOnly));
            }
        }
    }
}