private static void TrimSessions(Smtp4devDbContext dbContext, ServerOptions serverOptions)
{
dbContext.Sessions.RemoveRange(dbContext.Sessions.Where(s => s.EndDate.HasValue).OrderByDescending(m => m.EndDate).Skip(serverOptions.NumberOfSessionsToKeep));
}
private void OnServerOptionsChanged(ServerOptions serverOptions)
{
Stop();
TryStart();
}
private static void TrimMessages(Smtp4devDbContext dbContext, ServerOptions serverOptions)
{
dbContext.Messages.RemoveRange(dbContext.Messages.OrderByDescending(m => m.ReceivedDate).Skip(serverOptions.NumberOfMessagesToKeep));
}
public Smtp4devServer(Func <Smtp4devDbContext> dbContextFactory, IOptions <ServerOptions> serverOptions, MessagesHub messagesHub, SessionsHub sessionsHub)
{
this.messagesHub = messagesHub;
this.sessionsHub = sessionsHub;
this.serverOptions = serverOptions;
this.dbContextFactory = dbContextFactory;
System.Security.Cryptography.X509Certificates.X509Certificate2 cert = null;
Console.WriteLine($"\nTLS mode: {serverOptions.Value.TlsMode}");
if (serverOptions.Value.TlsMode != TlsMode.None)
{
if (!string.IsNullOrEmpty(serverOptions.Value.TlsCertificate))
{
Console.WriteLine($"Using certificate from {serverOptions.Value.TlsCertificate}");
cert = new X509Certificate2(File.ReadAllBytes(serverOptions.Value.TlsCertificate), "", X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
}
else
{
string pfxPath = Path.GetFullPath("selfsigned-certificate.pfx");
string cerPath = Path.GetFullPath("selfsigned-certificate.cer");
if (File.Exists(pfxPath))
{
cert = new X509Certificate2(File.ReadAllBytes(pfxPath), "", X509KeyStorageFlags.PersistKeySet | X509KeyStorageFlags.Exportable);
if (cert.Subject != $"CN={serverOptions.Value.HostName}" || DateTime.Parse(cert.GetExpirationDateString()) < DateTime.Now.AddDays(30))
{
cert = null;
}
else
{
Console.WriteLine($"Using existing self-signed certificate with subject name '{serverOptions.Value.HostName} and expiry date {cert.GetExpirationDateString()}");
}
}
if (cert == null)
{
cert = CreateSelfSignedCertificate();
File.WriteAllBytes(pfxPath, cert.Export(X509ContentType.Pkcs12));
File.WriteAllBytes(cerPath, cert.Export(X509ContentType.Cert));
Console.WriteLine($"Generated new self-signed certificate with subject name '{serverOptions.Value.HostName} and expiry date {cert.GetExpirationDateString()}");
}
Console.WriteLine($"Ensure that the hostname you enter into clients and '{serverOptions.Value.HostName}' from ServerOptions:HostName configuration match exactly");
Console.WriteLine($"and trust the issuer certificate at {cerPath} in your client/OS to avoid certificate validation errors.");
}
}
Console.WriteLine();
ServerOptions serverOptionsValue = serverOptions.Value;
this.smtpServer = new DefaultServer(serverOptionsValue.AllowRemoteConnections, serverOptionsValue.Port,
serverOptionsValue.TlsMode == TlsMode.ImplicitTls ? cert : null,
serverOptionsValue.TlsMode == TlsMode.StartTls ? cert : null
);
this.smtpServer.MessageReceivedEventHandler += OnMessageReceived;
this.smtpServer.SessionCompletedEventHandler += OnSessionCompleted;
this.smtpServer.SessionStartedHandler += OnSessionStarted;
this.smtpServer.AuthenticationCredentialsValidationRequiredEventHandler += OnAuthenticationCredentialsValidationRequired;
}