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ssl: Work around missing remote hostname for authentication (#5988)

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* ssl: Retrieve remote hostnames if the provided hostname is empty

 This avoids crashing with an AuthenticationException.

* ssl: Remove unused variable from RetrieveHostName
This commit is contained in:
TSRBerry 2024-01-25 20:10:51 +01:00 committed by GitHub
parent 371e6fa24c
commit 43705c2320
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1 changed files with 31 additions and 0 deletions
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31
src/Ryujinx.HLE/HOS/Services/Ssl/SslService/SslManagedSocketConnection.cs
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@ -3,6 +3,7 @@ using Ryujinx.HLE.HOS.Services.Sockets.Bsd.Impl;
using Ryujinx.HLE.HOS.Services.Ssl.Types;
using System;
using System.IO;
using System.Net;
using System.Net.Security;
using System.Net.Sockets;
using System.Security.Authentication;
@ -83,10 +84,40 @@ namespace Ryujinx.HLE.HOS.Services.Ssl.SslService
}
#pragma warning restore SYSLIB0039
/// <summary>
/// Retrieve the hostname of the current remote in case the provided hostname is null or empty.
/// </summary>
/// <param name="hostName">The current hostname</param>
/// <returns>Either the resolved or provided hostname</returns>
/// <remarks>
/// This is done to avoid getting an <see cref="System.Security.Authentication.AuthenticationException"/>
/// as the remote certificate will be rejected with <c>RemoteCertificateNameMismatch</c> due to an empty hostname.
/// This is not what the switch does!
/// It might just skip remote hostname verification if the hostname wasn't set with <see cref="ISslConnection.SetHostName"/> before.
/// TODO: Remove this as soon as we know how the switch deals with empty hostnames
/// </remarks>
private string RetrieveHostName(string hostName)
{
if (!string.IsNullOrEmpty(hostName))
{
return hostName;
}
try
{
return Dns.GetHostEntry(Socket.RemoteEndPoint.Address).HostName;
}
catch (SocketException)
{
return hostName;
}
}
public ResultCode Handshake(string hostName)
{
StartSslOperation();
_stream = new SslStream(new NetworkStream(((ManagedSocket)Socket).Socket, false), false, null, null);
hostName = RetrieveHostName(hostName);
_stream.AuthenticateAsClient(hostName, null, TranslateSslVersion(_sslVersion), false);
EndSslOperation();