90 lines
3.5 KiB
C#
90 lines
3.5 KiB
C#
// Copyright (C) 2024, The Duplicati Team
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// https://duplicati.com, hello@duplicati.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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using System;
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using System.Security.Cryptography.X509Certificates;
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using System.Net.Security;
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using Duplicati.Library.Common;
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namespace Duplicati.Library.Utility
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{
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public class SslCertificateValidator
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{
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[Serializable]
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public class InvalidCertificateException : Exception
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{
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private readonly string m_certificate = null;
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private readonly SslPolicyErrors m_errors = SslPolicyErrors.None;
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public string Certificate { get { return m_certificate; } }
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public SslPolicyErrors SslError { get { return m_errors; } }
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public InvalidCertificateException(string certificate, SslPolicyErrors error)
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: base(Strings.SslCertificateValidator.VerifyCertificateException(error, certificate) + (Platform.IsClientPosix ? Strings.SslCertificateValidator.MonoHelpSSL : ""))
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{
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m_certificate = certificate;
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m_errors = error;
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}
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}
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public SslCertificateValidator(bool acceptAll, string[] validHashes)
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{
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m_acceptAll = acceptAll;
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m_validHashes = validHashes;
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}
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private readonly bool m_acceptAll = false;
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private readonly string[] m_validHashes = null;
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public bool ValidateServerCertficate(object sender, X509Certificate cert, X509Chain chain, SslPolicyErrors sslPolicyErrors)
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{
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if (sslPolicyErrors == SslPolicyErrors.None)
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return true;
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if (m_acceptAll)
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return true;
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string certHash = null;
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try
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{
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certHash = Utility.ByteArrayAsHexString(cert.GetCertHash());
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if (certHash != null && m_validHashes != null)
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{
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foreach (var hash in m_validHashes)
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{
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if (!string.IsNullOrEmpty(hash) && certHash.Equals(hash, StringComparison.OrdinalIgnoreCase))
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{
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return true;
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}
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}
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}
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}
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catch (Exception ex)
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{
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throw new Exception(Strings.SslCertificateValidator.VerifyCertificateHashError(ex, sslPolicyErrors), ex);
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}
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return false;
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}
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}
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}
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