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libssh2/docs/libssh2_userauth_banner.md
Viktor Szakats b889b39945 docs: convert man page sources to "curldown" format
To render in Git webviews as-is, to make it easier to edit, verify,
and to sync up with curl.

- add options to not build the `.3` man pages:
  - autotools: `--disable-docs`
  - cmake: `LIBSSH2_BUILD_DOCS=OFF`
- building `.3` man pages requires Perl after this patch.
- drop `mansyntax` and the shell / `grep` / GNU `man` tool requirements with it.
- scripts and most logic were copied from curl.
- add `cd2nroff` from curl, with edits to relax curl-specific checks.
- used `nroff2cd` (from curl) to convert from `.3` to `.md`. Then
  manually fixed copyrights, inline function references and a couple
  of other things.

Credits-to: Daniel Stenberg

Ref: eefcc1bda4
Ref: https://github.com/curl/curl/pull/12730
Ref: https://github.com/libssh2/www/issues/25#issuecomment-3289431671

Closes #1660
2025-10-09 04:05:38 +02:00

1.1 KiB

c, SPDX-License-Identifier, Title, Section, Source, See-also
c SPDX-License-Identifier Title Section Source See-also
Copyright (C) The libssh2 project and its contributors. BSD-3-Clause libssh2_userauth_banner 3 libssh2
libssh2_session_init_ex(3)
libssh2_userauth_list(3)

NAME

libssh2_userauth_banner - get the server's userauth banner message

SYNOPSIS

#include <libssh2.h>

int
libssh2_userauth_banner(LIBSSH2_SESSION *session, char **banner);

DESCRIPTION

session - Session instance as returned by libssh2_session_init_ex(3)

banner - Should point to a pointer that gets filled with banner message.

After an authentication has been attempted, such as a SSH_USERAUTH_NONE request sent by libssh2_userauth_list(3) this function can be called to retrieve the userauth banner sent by the server. If no such banner is sent, or if an authentication has not yet been attempted, returns LIBSSH2_ERROR_MISSING_USERAUTH_BANNER.

RETURN VALUE

On success returns 0 and an UTF-8 NUL-terminated string is stored in the banner. This string is internally managed by libssh2 and will be deallocated upon session termination. On failure returns LIBSSH2_ERROR_MISSING_USERAUTH_BANNER.