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libssh2/docs/libssh2_agent_userauth.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

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Markdown

---
c: Copyright (C) Daiki Ueno
SPDX-License-Identifier: BSD-3-Clause
Title: libssh2_agent_userauth
Section: 3
Source: libssh2
See-also:
- libssh2_agent_get_identity(3)
- libssh2_agent_init(3)
- libssh2_agent_sign(3)
---
# NAME
libssh2_agent_userauth - authenticate a session with a public key, with the help of ssh-agent
# SYNOPSIS
~~~c
#include <libssh2.h>
int
libssh2_agent_userauth(LIBSSH2_AGENT *agent,
const char *username,
struct libssh2_agent_publickey *identity);
~~~
# DESCRIPTION
*agent* - ssh-agent handle as returned by libssh2_agent_init(3)
*username* - Remote user name to authenticate as.
*identity* - Public key to authenticate with, as returned by
libssh2_agent_get_identity(3)
Attempt public key authentication with the help of ssh-agent.
# RETURN VALUE
Returns 0 if succeeded, or a negative value for error.
# AVAILABILITY
Added in libssh2 1.2