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//usr/share/varnish/vcc/vmod_proxy.vcc

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#-
# Copyright (c) 2018 GANDI SAS
# All rights reserved.
#
# Author: Emmanuel Hocdet <manu@gandi.net>
#
# SPDX-License-Identifier: BSD-2-Clause
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.

$ABI strict
$Module proxy 3 "Varnish Module to extract TLV attributes from PROXYv2"

DESCRIPTION
===========

*vmod_proxy* contains functions to extract proxy-protocol-v2 TLV
attributes as described in
https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt.

$Function STRING alpn()

Extract ALPN attribute.

Example::

set req.http.alpn = proxy.alpn();

$Restrict client

$Function STRING authority()

Extract authority attribute. This corresponds to SNI from a TLS
connection.

Example::

set req.http.authority = proxy.authority();

$Restrict client

$Function BOOL is_ssl()

Report if proxy-protocol-v2 has SSL TLV.

Example::

if (proxy.is_ssl()) {
		set req.http.ssl-version = proxy.ssl_version();
	}

$Restrict client

$Function BOOL client_has_cert_sess()

Report if the client provided a certificate at least once over the TLS
session this connection belongs to.

$Restrict client

$Function BOOL client_has_cert_conn()

Report if the client provided a certificate over the current
connection.

$Restrict client

$Function INT ssl_verify_result()

Report the SSL_get_verify_result from a TLS session. It only matters
if client_has_cert_sess() is true. Per default, value is set to 0
(X509_V_OK).

Example::

if (proxy.client_has_cert_sess() && proxy.ssl_verify_result() == 0) {
		set req.http.ssl-verify = "ok";
	}

$Restrict client

$Function STRING ssl_version()

Extract SSL version attribute.

Example::

set req.http.ssl-version = proxy.ssl_version();

$Restrict client

$Function STRING client_cert_cn()

Extract the common name attribute of the client certificate's.

Example::
	set req.http.cert-cn = proxy.client_cert_cn();

$Restrict client

$Function STRING ssl_cipher()

Extract the SSL cipher attribute.

Example::

set req.http.ssl-cipher = proxy.ssl_cipher();

$Restrict client

$Function STRING cert_sign()

Extract the certificate signature algorithm attribute.

Example::

set req.http.cert-sign = proxy.cert_sign();

$Restrict client

$Function STRING cert_key()

Extract the certificate key algorithm attribute.

Example::

set req.http.cert-key = proxy.cert_key();

$Restrict client

Name	Size	Perms	Modified	Actions
vmod_blob.vcc	14.61 KB	lrw-r--r--	2024-05-09 10:06:11	Edit Download recursive recursive
vmod_cookie.vcc	6.43 KB	lrw-r--r--	2024-05-09 10:06:11	Edit Download recursive recursive
vmod_directors.vcc	22.43 KB	lrw-r--r--	2024-05-09 10:06:11	Edit Download recursive recursive
vmod_h2.vcc	3.12 KB	lrw-r--r--	2024-05-09 10:06:11	Edit Download recursive recursive
vmod_proxy.vcc	3.51 KB	lrw-r--r--	2024-05-09 10:06:11	Edit Download recursive recursive
vmod_purge.vcc	3.06 KB	lrw-r--r--	2024-05-09 10:06:11	Edit Download recursive recursive
vmod_std.vcc	22.01 KB	lrw-r--r--	2024-05-09 10:06:11	Edit Download recursive recursive
vmod_unix.vcc	3.16 KB	lrw-r--r--	2024-05-09 10:06:11	Edit Download recursive recursive
vmod_vtc.vcc	6.39 KB	lrw-r--r--	2024-05-09 10:06:11	Edit Download recursive recursive

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