[pmg-devel] applied-series: [PATCH v2 pmg-{api, gui, docs} 0/4] fix #2437: Add TLS enforcment option for inbound domains

[Stoiko Ivanov]

Thanks for the rework! 
tested a bit more and applied it with a small rephrase on the docs-commit
and a follow-up for (hopefully) better error-handling on wrong entries in
the API for tls_inbound_domains and tls_policy.



On Mon, 20 Mar 2023 11:35:44 +0100
Christoph Heiss <c.heiss at proxmox.com> wrote:

> TL;DR: Implements the approach as laid out by Stoiko in the Bugzilla
> ticket [0].
> 
> A new API endpoint is added - /api2/json/config/tlsinbounddomains. This
> is used to configure the newly introduced postfix map at
> /etc/pmg/tls_inbound_domains, specifying sender domains which get the
> `reject_plaintext_session` action [1] set, thus requiring TLS-encrypted
> sessions on inbound connections.
> 
> On the GUI side, a new panel is added in Configuration -> Mail Proxy ->
> TLS, where the domains for which this should be enforced can be specified.
> 
> Testing
> -------
> Tested this to the best of my knowledge, by adding some domains using
> the UI and using `curl` to send some simple mails:
> 
>   echo '' | curl -skv smtp://<host> -T - \
>     --mail-from foo at localhost.localdomain \
>     --mail-rcpt bar at localhost.localdomain
> 
> .. where `localhost.localdomain` is on the new 'TLS Inbound Domains' list.
> This will now fail with:
> 
>   450 4.7.1 Session encryption is required
> 
> When additionally adding the `--ssl-reqd` option to curl (instructing it
> to require a TLS-encrypted session), the above command will succeed.
> 
> (Also tested it with a domain not on the list, checking that no
> regressions are introduced.)
> 
> [0] https://bugzilla.proxmox.com/show_bug.cgi?id=2437
> [1] http://www.postfix.org/postconf.5.html#reject_plaintext_session
> 
> v1: https://lists.proxmox.com/pipermail/pmg-devel/2023-March/002296.html
> 
> ---
> pmg-api:
> 
> Christoph Heiss (2):
>       fix #2437: config: Add new tls_inbound_domains postfix map
>       fix #2437: api: Add endpoint for managing tls_inbound_domains entries
> 
>  src/Makefile                      |   1 +
>  src/PMG/API2/Config.pm            |   7 +++
>  src/PMG/API2/InboundTLSDomains.pm | 127 ++++++++++++++++++++++++++++++++++++++
>  src/PMG/Cluster.pm                |   1 +
>  src/PMG/Config.pm                 |  56 +++++++++++++++++
>  src/templates/main.cf.in          |   1 +
>  6 files changed, 193 insertions(+)
> 
> pmg-gui:
> 
> Christoph Heiss (1):
>       fix #2437: proxy: Add 'TLS Inbound Domains' panel
> 
>  js/MailProxyTLSInboundDomains.js | 93 ++++++++++++++++++++++++++++++++++++++++
>  js/MailProxyTLSPanel.js          |  8 +++-
>  js/Makefile                      |  1 +
>  3 files changed, 101 insertions(+), 1 deletion(-)
> 
> pmg-docs:
> 
> Christoph Heiss (1):
>       pmgconfig: Explain new TLS inbound domains configuration
> 
>  pmgconfig.adoc | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> --
> 2.39.2
> 
> 
> 
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