libssh2_userauth_list(3) libssh2 manual libssh2_userauth_list(3)
NAME
libssh2_userauth_list - list supported authentication methods
SYNOPSIS
#include <libssh2.h>
char *
libssh2_userauth_list(LIBSSH2_SESSION *session, const char *username,
unsigned int username_len);
DESCRIPTION
session - Session instance as returned by libssh2_session_init_ex(3)
username - Username which will be used while authenticating. Note that
most server implementations do not permit attempting authentication
with different usernames between requests. Therefore this must be the
same username you will use on later userauth calls.
username_len - Length of username parameter.
Send a SSH_USERAUTH_NONE request to the remote host. Unless the remote
host is configured to accept none as a viable authentication scheme
(unlikely), it will return SSH_USERAUTH_FAILURE along with a listing of
what authentication schemes it does support. In the unlikely event that
none authentication succeeds, this method with return NULL. This case
may be distinguished from a failing case by examining libssh2_user-
auth_authenticated(3).
RETURN VALUE
On success a comma delimited list of supported authentication schemes.
This list is internally managed by libssh2. On failure returns NULL.
ERRORS
LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed.
LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.
LIBSSH2_ERROR_EAGAIN - Marked for non-blocking I/O but the call
SEE ALSO
libssh2_session_init_ex(3)
libssh2 0.15 1 Jun 2007 libssh2_userauth_list(3)
libssh2 1.7.0 - Generated Thu May 26 07:37:26 CDT 2016