class documentation

_UserAuth implements the client part of SSH user authentication in the convenient way a user might expect if they are familiar with the interactive ssh command line client.

_UserAuth supports key-based authentication, password-based authentication, and delegating authentication to an agent.

Method connectToAgent Set up a connection to the authentication agent and trigger its initialization.
Method getPassword Get the password to use for authentication.
Method getPrivateKey Get the private part of a key pair to use for authentication. The key corresponds to the public part most recently returned from getPublicKey.
Method getPublicKey Retrieve the next public key object to offer to the server, possibly delegating to an authentication agent if there is one.
Method loseAgentConnection Disconnect the agent.
Method signData Extend the base signing behavior by using an SSH agent to sign the data, if one is available.
Method ssh_USERAUTH_SUCCESS Handle user authentication success in the normal way, but also make a note of the state change on the _CommandTransport.
Class Variable agent Undocumented
Class Variable keys Undocumented
Class Variable password Undocumented
Instance Variable key Undocumented

Inherited from SSHUserAuthClient:

Method __init__ Undocumented
Method askForAuth Send a MSG_USERAUTH_REQUEST.
Method auth_keyboard_interactive Try to authenticate with keyboard-interactive authentication. Send the request to the server and return True.
Method auth_password Try to authenticate with a password. Ask the user for a password. If the user will return a password, return True. Otherwise, return False.
Method auth_publickey Try to authenticate with a public key. Ask the user for a public key; if the user has one, send the request to the server and return True. Otherwise, return False.
Method getGenericAnswers Returns a Deferred with the responses to the promopts.
Method serviceStarted called when the service is active on the transport.
Method ssh_USERAUTH_FAILURE We received a MSG_USERAUTH_FAILURE. Payload:
Method ssh_USERAUTH_PK_OK This message (number 60) can mean several different messages depending on the current authentication type. We dispatch to individual methods in order to handle this request.
Method ssh_USERAUTH_PK_OK_keyboard_interactive This is MSG_USERAUTH_INFO_RESPONSE. The server has sent us the questions it wants us to answer, so we ask the user and sent the responses.
Method ssh_USERAUTH_PK_OK_password This is MSG_USERAUTH_PASSWD_CHANGEREQ. The password given has expired. We ask for an old password and a new password, then send both back to the server.
Method ssh_USERAUTH_PK_OK_publickey This is MSG_USERAUTH_PK. Our public key is valid, so we create a signature and try to authenticate with it.
Method tryAuth Dispatch to an authentication method.
Instance Variable authenticatedWith a list of strings of authentication methods we've tried
Instance Variable instance the service to start after authentication has finished
Instance Variable lastAuth Undocumented
Instance Variable lastPublicKey the last public key object we've tried to authenticate with
Instance Variable name the name of this service: 'ssh-userauth'
Instance Variable preferredOrder a list of authentication methods that should be used first, in order of preference, if supported by the server
Instance Variable triedPublicKeys a list of public key objects that we've tried to authenticate with
Instance Variable user the name of the user to authenticate as
Method _cbGenericAnswers Called back when we are finished answering keyboard-interactive questions. Send the info back to the server in a MSG_USERAUTH_INFO_RESPONSE.
Method _cbGetPublicKey Undocumented
Method _cbPassword Called back when the user gives a password. Send the request to the server.
Method _cbSignData Called back when the private key is returned. Sign the data and return the signature.
Method _cbSignedData Called back out of self.signData with the signed data. Send the authentication request with the signature.
Method _cbUserauthFailure Undocumented
Method _ebAuth Generic callback for a failed authentication attempt. Respond by asking for the list of accepted methods (the 'none' method)
Method _setNewPass Called back when we are choosing a new password. Get the old password and send the authentication message with both.
Method _setOldPass Called back when we are choosing a new password. Simply store the old password for now.
Instance Variable _newPass Undocumented
Instance Variable _oldPass Undocumented

Inherited from SSHService (via SSHUserAuthClient):

Method logPrefix Undocumented
Method packetReceived called when we receive a packet on the transport
Method serviceStopped called when the service is stopped, either by the connection ending or by another service being started
Class Variable protocolMessages Undocumented
Class Variable transport Undocumented
Class Variable _log Undocumented
def connectToAgent(self, endpoint): (source)

Set up a connection to the authentication agent and trigger its initialization.

Parameters
endpoint:IStreamClientEndpoint providerAn endpoint which can be used to connect to the authentication agent.
Returns
A Deferred which fires when the agent connection is ready for use.
def getPassword(self): (source)

Get the password to use for authentication.

Returns
A Deferred which fires with the password, or None if the password was not specified.
def getPrivateKey(self): (source)

Get the private part of a key pair to use for authentication. The key corresponds to the public part most recently returned from getPublicKey.

Returns
DeferredA Deferred which fires with the private key.
def getPublicKey(self): (source)

Retrieve the next public key object to offer to the server, possibly delegating to an authentication agent if there is one.

Returns
twisted.conch.ssh.keys.Key or NoneThe public part of a key pair that could be used to authenticate with the server, or None if there are no more public keys to try.
def loseAgentConnection(self): (source)

Disconnect the agent.

def signData(self, publicKey, signData): (source)

Extend the base signing behavior by using an SSH agent to sign the data, if one is available.

Parameters
publicKey:KeyUndocumented
signData:strUndocumented
def ssh_USERAUTH_SUCCESS(self, packet): (source)

Handle user authentication success in the normal way, but also make a note of the state change on the _CommandTransport.

Undocumented

Undocumented

password = (source)

Undocumented

Undocumented