/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to be authenticated.</param>
/// <returns>true if authenticated; otherwise false.</returns>
/// <exception cref="ArgumentNullException"><paramref name="session"/> is null.</exception>
/// <exception cref="SshAuthenticationException">No suitable authentication method found to complete authentication.</exception>
public bool Authenticate(Session session)
{
var authenticated = AuthenticationResult.Failure;
if (session == null)
{
throw new ArgumentNullException("session");
}
session.RegisterMessage("SSH_MSG_USERAUTH_FAILURE");
session.RegisterMessage("SSH_MSG_USERAUTH_SUCCESS");
session.RegisterMessage("SSH_MSG_USERAUTH_BANNER");
session.UserAuthenticationBannerReceived += Session_UserAuthenticationBannerReceived;
// Try to authenticate against none
var noneAuthenticationMethod = new NoneAuthenticationMethod(this.Username);
authenticated = noneAuthenticationMethod.Authenticate(session);
var allowedAuthentications = noneAuthenticationMethod.AllowedAuthentications;
var triedAuthentications = new List <string>();
while (authenticated != AuthenticationResult.Success)
{
// Find first authentication method
var method = this.AuthenticationMethods.Where((a) => allowedAuthentications.Contains(a.Name) && !triedAuthentications.Contains(a.Name)).FirstOrDefault();
if (method == null)
{
throw new SshAuthenticationException("No suitable authentication method found to complete authentication.");
}
triedAuthentications.Add(method.Name);
authenticated = method.Authenticate(session);
if (authenticated == AuthenticationResult.PartialSuccess)
{
// If further authentication is required then continue to try another method
allowedAuthentications = method.AllowedAuthentications;
continue;
}
// If authentication was successful or failure, exit
break;
}
session.UserAuthenticationBannerReceived -= Session_UserAuthenticationBannerReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_FAILURE");
session.UnRegisterMessage("SSH_MSG_USERAUTH_SUCCESS");
session.UnRegisterMessage("SSH_MSG_USERAUTH_BANNER");
this.IsAuthenticated = authenticated == AuthenticationResult.Success;
return(authenticated == AuthenticationResult.Success);
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns>Result of authentication process.</returns>
public override AuthenticationResult Authenticate(Session session)
{
_session = session;
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.UserAuthenticationInformationRequestReceived += Session_UserAuthenticationInformationRequestReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_INFO_REQUEST");
try
{
session.SendMessage(_requestMessage);
session.WaitOnHandle(_authenticationCompleted);
}
finally
{
session.UnRegisterMessage("SSH_MSG_USERAUTH_INFO_REQUEST");
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.UserAuthenticationInformationRequestReceived -= Session_UserAuthenticationInformationRequestReceived;
}
if (_exception != null)
{
throw _exception;
}
return(_authenticationResult);
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns></returns>
public override AuthenticationResult Authenticate(Session session)
{
this._session = session;
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.MessageReceived += Session_MessageReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_INFO_REQUEST");
session.SendMessage(this._requestMessage);
session.WaitHandle(this._authenticationCompleted);
session.UnRegisterMessage("SSH_MSG_USERAUTH_INFO_REQUEST");
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.MessageReceived -= Session_MessageReceived;
if (this._exception != null)
{
throw this._exception;
}
return(this._authenticationResult);
}
private void Session_MessageReceived(object sender, MessageEventArgs <Message> e)
{
if (e.Message is PasswordChangeRequiredMessage)
{
_session.UnRegisterMessage("SSH_MSG_USERAUTH_PASSWD_CHANGEREQ");
ThreadAbstraction.ExecuteThread(() =>
{
try
{
var eventArgs = new AuthenticationPasswordChangeEventArgs(Username);
// Raise an event to allow user to supply a new password
if (PasswordExpired != null)
{
PasswordExpired(this, eventArgs);
}
// Send new authentication request with new password
_session.SendMessage(new RequestMessagePassword(ServiceName.Connection, Username, _password, eventArgs.NewPassword));
}
catch (Exception exp)
{
_exception = exp;
_authenticationCompleted.Set();
}
});
}
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns>Result of authentication process.</returns>
public override AuthenticationResult Authenticate(Session session)
{
this._session = session;
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.MessageReceived += Session_MessageReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_INFO_REQUEST");
session.SendMessage(this._requestMessage);
session.WaitOnHandle(this._authenticationCompleted);
session.UnRegisterMessage("SSH_MSG_USERAUTH_INFO_REQUEST");
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.MessageReceived -= Session_MessageReceived;
if (this._exception != null)
{
throw this._exception;
}
return this._authenticationResult;
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns>
/// Result of authentication process.
/// </returns>
/// <exception cref="ArgumentNullException"><paramref name="session" /> is <c>null</c>.</exception>
public override AuthenticationResult Authenticate(Session session)
{
if (session == null)
{
throw new ArgumentNullException("session");
}
_session = session;
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.MessageReceived += Session_MessageReceived;
try
{
session.RegisterMessage("SSH_MSG_USERAUTH_PASSWD_CHANGEREQ");
session.SendMessage(_requestMessage);
session.WaitOnHandle(_authenticationCompleted);
}
finally
{
session.UnRegisterMessage("SSH_MSG_USERAUTH_PASSWD_CHANGEREQ");
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.MessageReceived -= Session_MessageReceived;
}
if (_exception != null)
{
throw _exception;
}
return(_authenticationResult);
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns>Result of authentication process.</returns>
public override AuthenticationResult Authenticate(Session session)
{
_session = session;
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.UserAuthenticationInformationRequestReceived += Session_UserAuthenticationInformationRequestReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_INFO_REQUEST");
try
{
session.SendMessage(_requestMessage);
session.WaitOnHandle(_authenticationCompleted);
}
finally
{
session.UnRegisterMessage("SSH_MSG_USERAUTH_INFO_REQUEST");
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.UserAuthenticationInformationRequestReceived -= Session_UserAuthenticationInformationRequestReceived;
}
if (_exception != null)
throw _exception;
return _authenticationResult;
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns>
/// Result of authentication process.
/// </returns>
public override AuthenticationResult Authenticate(Session session)
{
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.MessageReceived += Session_MessageReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_PK_OK");
foreach (var keyFile in this.KeyFiles)
{
this._authenticationCompleted.Reset();
this._isSignatureRequired = false;
var message = new RequestMessagePublicKey(ServiceName.Connection, this.Username, keyFile.HostKey.Name, keyFile.HostKey.Data);
if (this.KeyFiles.Count < 2)
{
// If only one key file provided then send signature for very first request
var signatureData = new SignatureData(message, session.SessionId).GetBytes();
message.Signature = keyFile.HostKey.Sign(signatureData);
}
// Send public key authentication request
session.SendMessage(message);
session.WaitHandle(this._authenticationCompleted);
if (this._isSignatureRequired)
{
this._authenticationCompleted.Reset();
var signatureMessage = new RequestMessagePublicKey(ServiceName.Connection, this.Username, keyFile.HostKey.Name, keyFile.HostKey.Data);
var signatureData = new SignatureData(message, session.SessionId).GetBytes();
signatureMessage.Signature = keyFile.HostKey.Sign(signatureData);
// Send public key authentication request with signature
session.SendMessage(signatureMessage);
}
session.WaitHandle(this._authenticationCompleted);
if (this._authenticationResult == AuthenticationResult.Success)
{
break;
}
}
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.MessageReceived -= Session_MessageReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_PK_OK");
return(this._authenticationResult);
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to be authenticated.</param>
/// <exception cref="ArgumentNullException"><paramref name="session"/> is null.</exception>
/// <exception cref="SshAuthenticationException">No suitable authentication method found to complete authentication, or permission denied.</exception>
public void Authenticate(Session session)
{
if (session == null)
{
throw new ArgumentNullException("session");
}
session.RegisterMessage("SSH_MSG_USERAUTH_FAILURE");
session.RegisterMessage("SSH_MSG_USERAUTH_SUCCESS");
session.RegisterMessage("SSH_MSG_USERAUTH_BANNER");
session.UserAuthenticationBannerReceived += Session_UserAuthenticationBannerReceived;
try
{
// the exception to report an authentication failure with
SshAuthenticationException authenticationException = null;
// try to authenticate against none
var noneAuthenticationMethod = new NoneAuthenticationMethod(this.Username);
var authenticated = noneAuthenticationMethod.Authenticate(session);
if (authenticated != AuthenticationResult.Success)
{
var failedAuthenticationMethods = new List <AuthenticationMethod>();
if (TryAuthenticate(session, noneAuthenticationMethod.AllowedAuthentications.ToList(), failedAuthenticationMethods, ref authenticationException))
{
authenticated = AuthenticationResult.Success;
}
}
this.IsAuthenticated = authenticated == AuthenticationResult.Success;
if (!IsAuthenticated)
{
throw authenticationException;
}
}
finally
{
session.UserAuthenticationBannerReceived -= Session_UserAuthenticationBannerReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_FAILURE");
session.UnRegisterMessage("SSH_MSG_USERAUTH_SUCCESS");
session.UnRegisterMessage("SSH_MSG_USERAUTH_BANNER");
}
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns></returns>
public override AuthenticationResult Authenticate(Session session)
{
if (this.Protocol == null)
{
return(AuthenticationResult.Failure);
}
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.MessageReceived += Session_MessageReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_PK_OK");
foreach (var identity in this.Protocol.GetIdentities())
{
this._authenticationCompleted.Reset();
this._isSignatureRequired = false;
var message = new RequestMessagePublicKey(ServiceName.Connection, this.Username, identity.Type, identity.Blob);
// Send public key authentication request
session.SendMessage(message);
session.WaitOnHandle(this._authenticationCompleted);
if (this._isSignatureRequired)
{
this._authenticationCompleted.Reset();
var signatureMessage = new RequestMessagePublicKey(ServiceName.Connection, this.Username, identity.Type, identity.Blob);
var signatureData = new SignatureData(message, session.SessionId).GetBytes();
signatureMessage.Signature = this.Protocol.SignData(identity, signatureData);
// Send public key authentication request with signature
session.SendMessage(signatureMessage);
}
session.WaitOnHandle(this._authenticationCompleted);
if (this._authenticationResult == AuthenticationResult.Success)
{
break;
}
}
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.MessageReceived -= Session_MessageReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_PK_OK");
return(this._authenticationResult);
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns>
/// Result of authentication process.
/// </returns>
/// <exception cref="ArgumentNullException"><paramref name="session" /> is <c>null</c>.</exception>
public override AuthenticationResult Authenticate(Session session)
{
if (session == null)
throw new ArgumentNullException("session");
_session = session;
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.UserAuthenticationPasswordChangeRequiredReceived += Session_UserAuthenticationPasswordChangeRequiredReceived;
try
{
session.RegisterMessage("SSH_MSG_USERAUTH_PASSWD_CHANGEREQ");
session.SendMessage(_requestMessage);
session.WaitOnHandle(_authenticationCompleted);
}
finally
{
session.UnRegisterMessage("SSH_MSG_USERAUTH_PASSWD_CHANGEREQ");
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.UserAuthenticationPasswordChangeRequiredReceived -= Session_UserAuthenticationPasswordChangeRequiredReceived;
}
if (_exception != null)
throw _exception;
return _authenticationResult;
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to be authenticated.</param>
/// <exception cref="ArgumentNullException"><paramref name="session"/> is null.</exception>
/// <exception cref="SshAuthenticationException">No suitable authentication method found to complete authentication, or permission denied.</exception>
public void Authenticate(Session session)
{
if (session == null)
throw new ArgumentNullException("session");
session.RegisterMessage("SSH_MSG_USERAUTH_FAILURE");
session.RegisterMessage("SSH_MSG_USERAUTH_SUCCESS");
session.RegisterMessage("SSH_MSG_USERAUTH_BANNER");
session.UserAuthenticationBannerReceived += Session_UserAuthenticationBannerReceived;
try
{
// the exception to report an authentication failure with
SshAuthenticationException authenticationException = null;
// try to authenticate against none
var noneAuthenticationMethod = new NoneAuthenticationMethod(this.Username);
var authenticated = noneAuthenticationMethod.Authenticate(session);
if (authenticated != AuthenticationResult.Success)
{
var failedAuthenticationMethods = new List<AuthenticationMethod>();
if (TryAuthenticate(session, noneAuthenticationMethod.AllowedAuthentications.ToList(), failedAuthenticationMethods, ref authenticationException))
{
authenticated = AuthenticationResult.Success;
}
}
this.IsAuthenticated = authenticated == AuthenticationResult.Success;
if (!IsAuthenticated)
throw authenticationException;
}
finally
{
session.UserAuthenticationBannerReceived -= Session_UserAuthenticationBannerReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_FAILURE");
session.UnRegisterMessage("SSH_MSG_USERAUTH_SUCCESS");
session.UnRegisterMessage("SSH_MSG_USERAUTH_BANNER");
}
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns></returns>
public override AuthenticationResult Authenticate(Session session)
{
if (this.Protocol == null)
return AuthenticationResult.Failure;
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.MessageReceived += Session_MessageReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_PK_OK");
foreach (var identity in this.Protocol.GetIdentities())
{
this._authenticationCompleted.Reset();
this._isSignatureRequired = false;
var message = new RequestMessagePublicKey(ServiceName.Connection, this.Username, identity.Type, identity.Blob);
// Send public key authentication request
session.SendMessage(message);
session.WaitOnHandle(this._authenticationCompleted);
if (this._isSignatureRequired)
{
this._authenticationCompleted.Reset();
var signatureMessage = new RequestMessagePublicKey(ServiceName.Connection, this.Username, identity.Type, identity.Blob);
var signatureData = new SignatureData(message, session.SessionId).GetBytes();
signatureMessage.Signature = this.Protocol.SignData(identity, signatureData);
// Send public key authentication request with signature
session.SendMessage(signatureMessage);
}
session.WaitOnHandle(this._authenticationCompleted);
if (this._authenticationResult == AuthenticationResult.Success)
{
break;
}
}
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.MessageReceived -= Session_MessageReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_PK_OK");
return this._authenticationResult;
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns>
/// Result of authentication process.
/// </returns>
public override AuthenticationResult Authenticate(Session session)
{
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.MessageReceived += Session_MessageReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_PK_OK");
foreach (var keyFile in KeyFiles)
{
_authenticationCompleted.Reset();
_isSignatureRequired = false;
var message = new RequestMessagePublicKey(ServiceName.Connection, Username, keyFile.HostKey.Name, keyFile.HostKey.Data);
if (KeyFiles.Count < 2)
{
// If only one key file provided then send signature for very first request
var signatureData = new SignatureData(message, session.SessionId).GetBytes();
message.Signature = keyFile.HostKey.Sign(signatureData);
}
// Send public key authentication request
session.SendMessage(message);
session.WaitOnHandle(_authenticationCompleted);
if (_isSignatureRequired)
{
_authenticationCompleted.Reset();
var signatureMessage = new RequestMessagePublicKey(ServiceName.Connection, Username, keyFile.HostKey.Name, keyFile.HostKey.Data);
var signatureData = new SignatureData(message, session.SessionId).GetBytes();
signatureMessage.Signature = keyFile.HostKey.Sign(signatureData);
// Send public key authentication request with signature
session.SendMessage(signatureMessage);
}
session.WaitOnHandle(_authenticationCompleted);
if (_authenticationResult == AuthenticationResult.Success)
{
break;
}
}
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.MessageReceived -= Session_MessageReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_PK_OK");
return _authenticationResult;
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns></returns>
public override AuthenticationResult Authenticate(Session session)
{
if (this.PrivateKeyAgent.Value == null)
{
return(AuthenticationResult.Failure);
}
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.MessageReceived += Session_MessageReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_PK_OK");
foreach (var keyInfo in this.PrivateKeyAgent.Value.ListSsh2())
{
var key = keyInfo.Key;
this._authenticationCompleted.Reset();
this._isSignatureRequired = false;
var message = new RequestMessagePublicKey(ServiceName.Connection, this.Username, key.Name, key.Data);
// Send public key authentication request
session.SendMessage(message);
session.WaitHandle(this._authenticationCompleted);
if (this._isSignatureRequired)
{
this._authenticationCompleted.Reset();
var signatureMessage = new RequestMessagePublicKey(ServiceName.Connection, this.Username, key.Name, key.Data);
var signatureData = new SignatureData(message, session.SessionId).GetBytes();
var signature = this.PrivateKeyAgent.Value.SignSsh2(key.Data, signatureData);
if (signature != null)
{
signatureMessage.Signature = signature;
// Send public key authentication request with signature
session.SendMessage(signatureMessage);
}
else
{
this._authenticationResult = AuthenticationResult.Failure;
this._authenticationCompleted.Set();
}
}
session.WaitHandle(this._authenticationCompleted);
if (this._authenticationResult == AuthenticationResult.Success)
{
break;
}
}
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.MessageReceived -= Session_MessageReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_PK_OK");
return(this._authenticationResult);
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to be authenticated.</param>
/// <returns>true if authenticated; otherwise false.</returns>
/// <exception cref="ArgumentNullException"><paramref name="session"/> is null.</exception>
/// <exception cref="SshAuthenticationException">No suitable authentication method found to complete authentication.</exception>
public bool Authenticate(Session session)
{
var authenticated = AuthenticationResult.Failure;
if (session == null)
throw new ArgumentNullException("session");
session.RegisterMessage("SSH_MSG_USERAUTH_FAILURE");
session.RegisterMessage("SSH_MSG_USERAUTH_SUCCESS");
session.RegisterMessage("SSH_MSG_USERAUTH_BANNER");
session.UserAuthenticationBannerReceived += Session_UserAuthenticationBannerReceived;
// Try to authenticate against none
var noneAuthenticationMethod = new NoneAuthenticationMethod(this.Username);
authenticated = noneAuthenticationMethod.Authenticate(session);
var allowedAuthentications = noneAuthenticationMethod.AllowedAuthentications;
var triedAuthentications = new List<string>();
while (authenticated != AuthenticationResult.Success)
{
// Find first authentication method
var method = this.AuthenticationMethods.Where((a) => allowedAuthentications.Contains(a.Name) && !triedAuthentications.Contains(a.Name)).FirstOrDefault();
if (method == null)
throw new SshAuthenticationException("No suitable authentication method found to complete authentication.");
triedAuthentications.Add(method.Name);
authenticated = method.Authenticate(session);
if (authenticated == AuthenticationResult.PartialSuccess)
{
// If further authentication is required then continue to try another method
allowedAuthentications = method.AllowedAuthentications;
continue;
}
// If authentication was successful or failure, exit
break;
}
session.UserAuthenticationBannerReceived -= Session_UserAuthenticationBannerReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_FAILURE");
session.UnRegisterMessage("SSH_MSG_USERAUTH_SUCCESS");
session.UnRegisterMessage("SSH_MSG_USERAUTH_BANNER");
this.IsAuthenticated = authenticated == AuthenticationResult.Success;
return authenticated == AuthenticationResult.Success;
}
/// <summary>
/// Authenticates the specified session.
/// </summary>
/// <param name="session">The session to authenticate.</param>
/// <returns></returns>
public override AuthenticationResult Authenticate(Session session)
{
if (this.PrivateKeyAgent.Value == null)
return AuthenticationResult.Failure;
session.UserAuthenticationSuccessReceived += Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived += Session_UserAuthenticationFailureReceived;
session.MessageReceived += Session_MessageReceived;
session.RegisterMessage("SSH_MSG_USERAUTH_PK_OK");
foreach (var keyInfo in this.PrivateKeyAgent.Value.ListSsh2())
{
var key = keyInfo.Key;
this._authenticationCompleted.Reset();
this._isSignatureRequired = false;
var message = new RequestMessagePublicKey(ServiceName.Connection, this.Username, key.Name, key.Data);
// Send public key authentication request
session.SendMessage(message);
session.WaitHandle(this._authenticationCompleted);
if (this._isSignatureRequired)
{
this._authenticationCompleted.Reset();
var signatureMessage = new RequestMessagePublicKey(ServiceName.Connection, this.Username, key.Name, key.Data);
var signatureData = new SignatureData(message, session.SessionId).GetBytes();
var signature = this.PrivateKeyAgent.Value.SignSsh2(key.Data, signatureData);
if (signature != null)
{
signatureMessage.Signature = signature;
// Send public key authentication request with signature
session.SendMessage(signatureMessage);
}
else
{
this._authenticationResult = AuthenticationResult.Failure;
this._authenticationCompleted.Set();
}
}
session.WaitHandle(this._authenticationCompleted);
if (this._authenticationResult == AuthenticationResult.Success)
{
break;
}
}
session.UserAuthenticationSuccessReceived -= Session_UserAuthenticationSuccessReceived;
session.UserAuthenticationFailureReceived -= Session_UserAuthenticationFailureReceived;
session.MessageReceived -= Session_MessageReceived;
session.UnRegisterMessage("SSH_MSG_USERAUTH_PK_OK");
return this._authenticationResult;
}
