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44 lines
1.7 KiB
Groff
44 lines
1.7 KiB
Groff
.\" Copyright (C) The libssh2 project and its contributors.
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.\" SPDX-License-Identifier: BSD-3-Clause
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.TH libssh2_userauth_list 3 "1 Jun 2007" "libssh2 0.15" "libssh2"
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.SH NAME
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libssh2_userauth_list - list supported authentication methods
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.SH SYNOPSIS
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.nf
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#include <libssh2.h>
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char *
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libssh2_userauth_list(LIBSSH2_SESSION *session,
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const char *username,
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unsigned int username_len);
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.fi
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.SH DESCRIPTION
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\fIsession\fP - Session instance as returned by
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.BR libssh2_session_init_ex(3)
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\fIusername\fP - Username which will be used while authenticating. Note that
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most server implementations do not permit attempting authentication with
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different usernames between requests. Therefore this must be the same username
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you will use on later userauth calls.
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\fIusername_len\fP - Length of username parameter.
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Send a \fBSSH_USERAUTH_NONE\fP request to the remote host. Unless the remote
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host is configured to accept none as a viable authentication scheme
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(unlikely), it will return \fBSSH_USERAUTH_FAILURE\fP along with a listing of
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what authentication schemes it does support. In the unlikely event that none
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authentication succeeds, this method with return NULL. This case may be
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distinguished from a failing case by examining
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\fIlibssh2_userauth_authenticated(3)\fP.
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.SH RETURN VALUE
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On success a comma delimited list of supported authentication schemes. This
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list is internally managed by libssh2. On failure returns NULL.
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.SH ERRORS
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\fILIBSSH2_ERROR_ALLOC\fP - An internal memory allocation call failed.
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\fILIBSSH2_ERROR_SOCKET_SEND\fP - Unable to send data on socket.
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\fILIBSSH2_ERROR_EAGAIN\fP - Marked for non-blocking I/O but the call
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.SH SEE ALSO
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.BR libssh2_session_init_ex(3)
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