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[bug#32141] [PATCH] services: Add ddclient service.

From: Oleg Pykhalov
Subject: [bug#32141] [PATCH] services: Add ddclient service.
Date: Wed, 01 Aug 2018 20:27:38 +0300
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)

Hello Ludovic,

I applied all your suggestions and updated the documentation.  The patch
is attached below.  I run a ddclient service from this patch currently.

address@hidden (Ludovic Courtès) writes:


>> Also, the generated ‘ddclient.conf’ which contains secrets is stored in
>> the store.  I probably should change the ‘ddclient-activation’ procedure
>> (copy-file #$(plain-file "ddclient.conf" config-str) file)
>> to a procedure which writes ‘config-str’ to the file without storing it
>> somewhere else.  WDYT?
> The problem would be the same: the activation script would contain
> ‘config-str’, and it would live in the store.
> In short we must not manipulate secrets in anything that goes through
> the store.  The only thing I can suggest is to leave it up to the
> user to create a file containing the secret in an out-of-band fashion;
> /etc is a good place for such things.
> For example, they could create /etc/ddclient-secrets and then we would
> somehow arrange to get that file read.
> To do that there are two possibilities that come to mind:
>   1. If the config file syntax has an “include” directive, just include
>      /etc/ddclient-secrets unconditionally in the generated config file.
>   2. Write an activation snippet that concatenates the generated config
>      file with /etc/ddclient-secrets and stores that as
>      /etc/ddclient.conf (or something like that.)
> Thoughts?

Could we use ‘/etc/ddclient’ directory for secrets file, because
ddclient program use this directory by default?

--8<---------------cut here---------------start------------->8---
The following example will configure the service.

By default, the @code{secret-file} in @code{ddclient-configuration} is
pointing to @file{/etc/ddclient/secrets.conf} file, which will be appended to
@file{/etc/ddclient/ddclient.conf} and should be created in advance.  See
samples inside @file{/share/ddclient} directory of @code{ddclient} package.

(service ddclient-service-type)
@end example
--8<---------------cut here---------------end--------------->8---

Attachment: 0001-services-Add-ddclient-service.patch
Description: [PATCH] services: Add ddclient service.

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