/// <summary>
/// Start the authentication request.
/// </summary>
/// <param name="authentication">The authentication protocol instance.</param>
/// <param name="serviceName">The name of the service to start upon a successful authentication.</param>
public void Authenticate(AuthenticationProtocol authentication, String serviceName)
{
if (InteractivePrompt == null)
{
throw new SSHException("An interactive prompt event must be set!",
SSHException.BAD_API_USAGE);
}
ByteBuffer baw = new ByteBuffer();
baw.WriteString("");
baw.WriteString("");
authentication.SendRequest(username,
serviceName,
"keyboard-interactive",
baw.ToByteArray());
while (true)
{
SSHPacket msg = authentication.ReadMessage();
if (msg.MessageID != SSH_MSG_USERAUTH_INFO_REQUEST)
{
authentication.transport.Disconnect("Unexpected authentication message received!",
DisconnectionReason.PROTOCOL_ERROR);
throw new SSHException("Unexpected authentication message received!",
SSHException.PROTOCOL_VIOLATION);
}
String name = msg.ReadString();
String instruction = msg.ReadString();
String langtag = msg.ReadString();
int num = (int)msg.ReadInt();
String prompt;
bool echo;
KBIPrompt[] prompts = new KBIPrompt[num];
for (int i = 0; i < num; i++)
{
prompt = msg.ReadString();
echo = (msg.ReadBool());
prompts[i] = new KBIPrompt(prompt, echo);
}
if (InteractivePrompt(name, instruction, prompts))
{
msg = authentication.transport.GetSSHPacket(true);
msg.WriteByte(SSH_MSG_USERAUTH_INFO_RESPONSE);
msg.WriteInt(prompts.Length);
for (int i = 0; i < prompts.Length; i++)
{
msg.WriteString(prompts[i].Response);
}
authentication.transport.SendMessage(msg);
}
else
{
throw new SSHException("User cancelled during authentication",
SSHException.USER_CANCELATION);
}
}
}
