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 lib-
ssh2_userauth_authenticated(3).
RETURN VALUE
On success a comma delimited list of supported authentication schemes. This list is internally managed by libssh2. On failure ruturns
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)
Check Out this Related Man Page
libssh2_userauth_password_ex(3) libssh2 manual libssh2_userauth_password_ex(3)NAME
libssh2_userauth_password_ex - authenticate a session with username and password
SYNOPSIS
#include <libssh2.h>
int libssh2_userauth_password_ex(LIBSSH2_SESSION *session,
const char *username,
unsigned int username_len,
const char *password,
unsigned int password_len,
LIBSSH2_PASSWD_CHANGEREQ_FUNC((*passwd_change_cb)));
#define libssh2_userauth_password(session, username, password)
libssh2_userauth_password_ex((session), (username),
strlen(username),
(password), strlen(password), NULL)
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.
password - Password to use for authenticating username.
password_len - Length of password parameter.
passwd_change_cb - If the host accepts authentication but requests that the password be changed, this callback will be issued. If no call-
back is defined, but server required password change, authentication will fail.
Attempt basic password authentication. Note that many SSH servers which appear to support ordinary password authentication actually have it
disabled and use Keyboard Interactive authentication (routed via PAM or another authentication backed) instead.
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
Some of the errors this function may return include:
LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed.
LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.
LIBSSH2_ERROR_PASSWORD_EXPIRED -
IBSSH2_ERROR_AUTHENTICATION_FAILED - failed, invalid username/password or public/private key.
SEE ALSO libssh2_session_init_ex(3)libssh2 0.15 1 Jun 2007 libssh2_userauth_password_ex(3)