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Fixed: Added fallback and log errors when Tls1.2 clashes with https certificate with obsolete md5 hash.

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This commit is contained in:
Taloth Saldono 2016-09-13 22:57:07 +02:00
parent 713e109bc9
commit 816cf608fc
5 changed files with 40 additions and 7 deletions
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7
src/NzbDrone.Common/Http/Dispatchers/ManagedHttpDispatcher.cs
View File

@ -1,7 +1,9 @@
using System;
using System.Net;
using NzbDrone.Common.EnvironmentInfo;
using NzbDrone.Common.Extensions;
using NzbDrone.Common.Http.Proxy;
using NzbDrone.Common.Security;
namespace NzbDrone.Common.Http.Dispatchers
{
@ -60,6 +62,11 @@ public HttpResponse GetResponse(HttpRequest request, CookieContainer cookies)
}
catch (WebException e)
{
if (e.Status == WebExceptionStatus.SecureChannelFailure && OsInfo.IsWindows)
{
SecurityProtocolPolicy.DisableTls12();
}
httpWebResponse = (HttpWebResponse)e.Response;
if (httpWebResponse == null)

19
src/NzbDrone.Common/Security/SecurityProtocolPolicy.cs
View File

@ -24,6 +24,7 @@ public static void Register()
protocol |= Tls11;
}
// Enabling Tls1.2 invalidates certificates using md5, so we disable Tls12 on the fly if that happens.
if (Enum.IsDefined(typeof(SecurityProtocolType), Tls12))
{
protocol |= Tls12;
@ -36,5 +37,23 @@ public static void Register()
Logger.Debug(ex, "Failed to set TLS security protocol.");
}
}
public static void DisableTls12()
{
try
{
var protocol = ServicePointManager.SecurityProtocol;
if (protocol.HasFlag(Tls12))
{
Logger.Warn("Disabled Tls1.2 due to remote certificate error.");
ServicePointManager.SecurityProtocol = protocol & ~Tls12;
}
}
catch (Exception ex)
{
Logger.Debug(ex, "Failed to disable TLS 1.2 security protocol.");
}
}
}
}

7
src/NzbDrone.Common/Security/X509CertificateValidationPolicy.cs
View File

@ -24,6 +24,13 @@ private static bool ShouldByPassValidationError(object sender, X509Certificate c
return true;
}
var req = sender as HttpWebRequest;
var cert2 = certificate as X509Certificate2;
if (cert2 != null && req != null && cert2.SignatureAlgorithm.FriendlyName == "md5RSA")
{
Logger.Error("https://{0} uses the obsolete md5 hash in it's https certificate, if that is your certificate, please (re)create certificate with better algorithm as soon as possible.", req.RequestUri.Authority);
}
if (sslPolicyErrors == SslPolicyErrors.None)
{
return true;

2
src/NzbDrone.Host/Bootstrap.cs
View File

@ -21,8 +21,8 @@ public static void Start(StartupContext startupContext, IUserAlert userAlert, Ac
{
try
{
X509CertificateValidationPolicy.Register();
SecurityProtocolPolicy.Register();
X509CertificateValidationPolicy.Register();
Logger.Info("Starting Sonarr - {0} - Version {1}", Assembly.GetCallingAssembly().Location, Assembly.GetExecutingAssembly().GetName().Version);

6
src/NzbDrone.Update/UpdateApp.cs
View File

@ -30,14 +30,14 @@ public static void Main(string[] args)
{
try
{
SecurityProtocolPolicy.Register();
X509CertificateValidationPolicy.Register();
var startupArgument = new StartupContext(args);
NzbDroneLogger.Register(startupArgument, true, true);
Logger.Info("Starting Sonarr Update Client");
X509CertificateValidationPolicy.Register();
SecurityProtocolPolicy.Register();
_container = UpdateContainerBuilder.Build(startupArgument);
_container.Resolve<UpdateApp>().Start(args);