public bool TryGetClient(SSHCredentials credentials, out SshClient client)
{
client = null;
SshClient deleteClient = null;
foreach (SshClient c in this)
{
if (c.ConnectionInfo.Host == credentials.Host)
{
if (c.IsConnected == true)
{
client = c;
}
else
{
deleteClient = c;
}
break;
}
}
if (deleteClient != null)
{
Remove(deleteClient);
}
return(client != null);
}
public static bool Authorize(SSHCredentials sshCredentials)
{
SshClient client = null;
PrivateKeyConnectionInfo connectionInfo = new PrivateKeyConnectionInfo(
sshCredentials.Host,
sshCredentials.UserName,
new PrivateKeyFile[] { new PrivateKeyFile(sshCredentials.KeyFile) });
client = new SshClient(connectionInfo);
client.Connect();
client.Disconnect();
return(true);
}
static public bool EnsureTunnelExists(SqlDBCredentials credentials)
{
SSHCredentials sshCredentials = credentials.SSHCredentials;
SshClient client = null;
if (_clients.TryGetClient(sshCredentials, out client) == false)
{
PrivateKeyConnectionInfo connectionInfo = new PrivateKeyConnectionInfo(
sshCredentials.Host,
sshCredentials.UserName,
new PrivateKeyFile[] { new PrivateKeyFile(sshCredentials.KeyFile) });
client = new SshClient(connectionInfo);
client.KeepAliveInterval = TimeSpan.FromMinutes(1);
client.ErrorOccurred += Client_ErrorOccurred;
client.HostKeyReceived += Client_HostKeyReceived;
client.Connect();
if (client.IsConnected)
{
ForwardedPortLocal port = new ForwardedPortLocal(
IPAddress.Loopback.ToString(),
sshCredentials.LocalTunnelPort,
sshCredentials.TunnelHost, 3306);
client.AddForwardedPort(port);
port.Start();
if (port.IsStarted == false)
{
client.Disconnect();
client = null;
throw new Exception("Could not forward port");
}
_clients.Add(client);
}
}
return(client != null);
}
