Hello,

On Sun, Jul 05, 2020 at 09:43:22AM +0300, [email protected] wrote:
> From: Shimi Gersner <[email protected]>
> 
> haproxy supports generating SSL certificates based on SNI using a provided
> CA signing certificate. Because CA certificates may be signed by multiple
> CAs, in some scenarios, it is neccesary for the server to attach the trust 
> chain
> in addition to the generated certificate.
> 
> The following patch adds the ability to optionally serve all public
> certificates provided in the `ca-sign-file` PEM file.
> Certificate loading was ported to use `ca_sign_use_chain` structure,
> instead of directly reading public/private keys.


Totally make sense in my opinion. But if I understand correctly you only
need the certificate to be signed by the leaf CA in the chain and
provides all the chain to the client. We probably don't need a new
option for this.

So what I suggest is to put the chain in the "ca-sign-file" so it will
works the same way as the "crt" keyword.


> ---
>  doc/configuration.txt        |  8 +++
>  include/haproxy/listener-t.h |  4 +-
>  src/cfgparse-ssl.c           | 13 +++++
>  src/ssl_sock.c               | 98 ++++++++++++++++++++----------------
>  4 files changed, 78 insertions(+), 45 deletions(-)
> 
> diff --git a/doc/configuration.txt b/doc/configuration.txt
> index 6d472134e..1d3878bc1 100644
> --- a/doc/configuration.txt
> +++ b/doc/configuration.txt
> @@ -12158,6 +12158,14 @@ ca-sign-pass <passphrase>
>    the dynamic generation of certificates is enabled. See
>    'generate-certificates' for details.
>  
> +ca-sign-use-chain
> +  This setting is only available when support for OpenSSL was built in. It is
> +  the CA private key passphrase. This setting is optional and used only when

Copy-paste error there :-)

> +  the dynamic generation of certificates is enabled. See
> +  'generate-certificates' for details.
> +  Enabling this flag will attach all public certificates encoded in 
> `ca-sign-file`
> +  to the served certificate to the client, enabling trust.
> +

-- 
William Lallemand

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