/// <summary>
/// Close connection to server
/// </summary>
public void Disconnect()
{
if (FTP)
{
_ftpc.Close();
}
else
{
_sftpc.Disconnect();
}
}
/// <summary>
/// Connect to the remote servers, with the details from Profile
/// </summary>
/// <param name="reconnecting">True if this is an attempt to re-establish a closed connection</param>
public void Connect(bool reconnecting = false)
{
Notifications.ChangeTrayText(reconnecting ? MessageType.Reconnecting : MessageType.Connecting);
Log.Write(l.Debug, "{0} client...", reconnecting ? "Reconnecting" : "Connecting");
if (FTP)
{
_ftpc = new FtpClient(controller.Account.Host, controller.Account.Port);
_ftpc.ConnectionClosed += (o, e) =>
{
Notifications.ChangeTrayText(MessageType.Nothing);
if (ConnectionClosed != null)
{
ConnectionClosed(null, new ConnectionClosedEventArgs {
Text = _ftpc.LastResponse.Text
});
}
Reconnect();
};
if (controller.Account.Protocol == FtpProtocol.FTPS)
{
_ftpc.ValidateServerCertificate += (sender, x) =>
{
// if ValidateCertificate handler isn't set, accept the certificate and move on
if (ValidateCertificate == null || Settings.TrustedCertificates.Contains(x.Certificate.Thumbprint))
{
Log.Write(l.Client, "Trusted: {0}", x.Certificate.Thumbprint);
x.IsCertificateValid = true;
return;
}
var e = new ValidateCertificateEventArgs
{
Fingerprint = x.Certificate.Thumbprint,
SerialNumber = x.Certificate.SerialNumber,
Algorithm = x.Certificate.SignatureAlgorithm.FriendlyName,
ValidFrom = x.Certificate.NotBefore.ToString("MM/dd/yy"),
ValidTo = x.Certificate.NotAfter.ToString("MM/dd/yy"),
Issuer = x.Certificate.IssuerName.Name
};
ValidateCertificate(null, e);
x.IsCertificateValid = e.IsTrusted;
};
// Change Security Protocol
if (controller.Account.FtpsMethod == FtpsMethod.Explicit)
{
_ftpc.SecurityProtocol = FtpSecurityProtocol.Tls1OrSsl3Explicit;
}
else if (controller.Account.FtpsMethod == FtpsMethod.Implicit)
{
_ftpc.SecurityProtocol = FtpSecurityProtocol.Tls1OrSsl3Implicit;
}
}
try
{
_ftpc.Open(controller.Account.Username, controller.Account.Password);
}
catch (Exception)
{
if (controller.Account.FtpsMethod == FtpsMethod.None)
{
throw;
}
bool connected = false;
// Try connecting with the other available Security Protocols
foreach (FtpSecurityProtocol p in Enum.GetValues(typeof(FtpSecurityProtocol)))
{
if ((controller.Account.FtpsMethod == FtpsMethod.Explicit && p.ToString().Contains("Explicit")) ||
(controller.Account.FtpsMethod == FtpsMethod.Implicit && p.ToString().Contains("Implicit")))
{
Log.Write(l.Debug, "Testing with {0}", p.ToString());
try {
_ftpc.Close();
_ftpc.SecurityProtocol = p;
_ftpc.Open(controller.Account.Username, controller.Account.Password);
}
catch (Exception exe) {
Log.Write(l.Warning, "Unable to connect: {0}", exe.GetType().ToString());
continue;
}
connected = true;
controller.Account.FtpSecurityProtocol = p;
break;
}
}
if (!connected)
{
Notifications.ChangeTrayText(MessageType.Nothing);
throw;
}
}
}
else // SFTP
{
ConnectionInfo connectionInfo;
if (controller.isPrivateKeyValid)
{
connectionInfo = new PrivateKeyConnectionInfo(controller.Account.Host, controller.Account.Port, controller.Account.Username, new PrivateKeyFile(controller.Account.PrivateKeyFile, controller.Account.Password));
}
else
{
connectionInfo = new PasswordConnectionInfo(controller.Account.Host, controller.Account.Port, controller.Account.Username, controller.Account.Password);
}
_sftpc = new SftpClient(connectionInfo);
_sftpc.ConnectionInfo.AuthenticationBanner += (o, x) => Log.Write(l.Warning, x.BannerMessage);
_sftpc.HostKeyReceived += (o, x) =>
{
var fingerPrint = x.FingerPrint.GetCertificateData();
// if ValidateCertificate handler isn't set, accept the certificate and move on
if (ValidateCertificate == null || Settings.TrustedCertificates.Contains(fingerPrint))
{
Log.Write(l.Client, "Trusted: {0}", fingerPrint);
x.CanTrust = true;
return;
}
var e = new ValidateCertificateEventArgs
{
Fingerprint = fingerPrint,
Key = x.HostKeyName,
KeySize = x.KeyLength.ToString()
};
ValidateCertificate(null, e);
x.CanTrust = e.IsTrusted;
};
_sftpc.Connect();
_sftpc.ErrorOccurred += (o, e) =>
{
if (!isConnected)
{
Notifications.ChangeTrayText(MessageType.Nothing);
}
if (ConnectionClosed != null)
{
ConnectionClosed(null, new ConnectionClosedEventArgs {
Text = e.Exception.Message
});
}
if (e.Exception is Renci.SshNet.Common.SftpPermissionDeniedException)
{
Log.Write(l.Warning, "Permission denied error occured");
}
if (e.Exception is Renci.SshNet.Common.SshConnectionException)
{
Reconnect();
}
};
}
controller.HomePath = WorkingDirectory;
if (isConnected)
{
if (!string.IsNullOrWhiteSpace(controller.Paths.Remote) && !controller.Paths.Remote.Equals("/"))
{
WorkingDirectory = controller.Paths.Remote;
}
}
Log.Write(l.Debug, "Client connected sucessfully");
Notifications.ChangeTrayText(MessageType.Ready);
if (Settings.IsDebugMode)
{
LogServerInfo();
}
}
