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libssh2_userauth_keyboard_interactive_ex

libssh2_userauth_keyboard_interactive_ex

Section: libssh2 manual (3) Updated: 8 Mar 2008
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NAME

libssh2_userauth_keyboard_interactive_ex - authenticate a session using a challenge-response authentication  

SYNOPSIS

#include <libssh2.h>

int libssh2_userauth_keyboard_interactive_ex(LIBSSH2_SESSION *session, const char *username, unsigned int username_len, LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC(*response_callback));

int libssh2_userauth_keyboard_interactive(LIBSSH2_SESSION *session, const char *username, LIBSSH2_USERAUTH_KBDINT_RESPONSE_FUNC(*response_callback));

 

DESCRIPTION

session - Session instance as returned by libssh2_session_init_ex(3)

username - Name of user to attempt plain password authentication for.

username_len - Length of username parameter.

response_callback - As authentication proceeds, host issues several (1 or more) challenges and requires responses. This callback will be called at this moment. Callback is responsible to obtain responses for the challenges, fill the provided data structure and then return control. Responses will be sent to the host. String values will be free(3)ed by the library.

Attempts keyboard-interactive (challenge/response) authentication.

Note that many SSH servers will always issue single "password" challenge, requesting actual password as response, but it is not required by the protocol, and various authentication schemes, such as smartcard authentication may use keyboard-interactive authentication type too.

 

RETURN VALUE

Return 0 on success or negative on failure. It returns LIBSSH2_ERROR_EAGAIN when it would otherwise block. While LIBSSH2_ERROR_EAGAIN is a negative number, it isn't really a failure per se.

 

ERRORS

LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed.

LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.

IBSSH2_ERROR_AUTHENTICATION_FAILED - failed, invalid username/password or public/private key.

 

SEE ALSO

libssh2_session_init_ex(3)


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
SEE ALSO

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Time: 21:49:23 GMT, April 16, 2011