Default signatur for new users

TGM

I have created two scripts which are creating a default signature in the Grommunio WebApp for new created users. For sure, it is possible to migrate it into one script. But for me I found two scripts more readable and more clear. Maybe this helps someone.

The first script shows, if there new users exists. And then it decide on the domain part of the username which signature is choosed. And sure, it use a default signature too, if there no domain part found. (Which would be possible if you add more domains and not change the script, for example). Then it calls the second script with some parameters.

The second script is fetching the current websettings for the user, add the signature to this settings and apply it again to the user. If no websettings are found, because the user was not logged in before, it creates some default websettings.

The first script should be called via cronjob. Maybe:

@hourly /opt/signaturen/neue_user_default_websettings_und_signatur.sh

The scripts and all other files which are required are located in /opt/signaturen and for sure, you need to place there your signatures as an html file too.

You have to change the value of "active_theme" in the websettings_defaults.json to the default theme you want to use for the user as default.

Unfortunately I can not upload the files here, so I added an URL to the ZIP file. (Maybe an admin/moderator can do this for me, then feel free!) The URL is: [https://nextcloud.mpi-bremen.de/index.php/s/6LBNAG75C2tqzpa]

crpb

You are missing a space after the '--' for a somewhat valid signature detection for various clients.

cb@obelix .._signature/grommunio_default_signature % \cat -A signatur_domain*
--$
<p style="padding: 0; margin: 0;">$
Here is some place for your html signature...$
</p>$
--$
<p style="padding: 0; margin: 0;">$
Here is some place for your html signature...$
</p>$

At least to RFC 3676 (i know it says usenet but thats where many stuff originated).
https://en.wikipedia.org/wiki/Signature_block#Standard_delimiter

And i would probably leave out the thumbnail or did you add that for some reason?
If so, then it might be a good idea to add a little README on how to generate one yourself.
I'm guessing something like this:

PIC=moo1.jpg; MIME=$(xdg-mime query filetype $PIC); BASE64="base64,$(base64 -w 0 "$PIC")"; THUMBNAIL="${MIME};${BASE64}" ; jq --null-input --arg thumbnail "$THUMBNAIL" '{"settings":{"zarafa":{"v1":{"main":{"thumbnail_photo": $thumbnail } } } } }'

Haven't tried the actual script yet tho 😛

EDIT: And that .settings.zarafa.v1.state.folders i'm not so sure about it 🤷
EDIT2: i would probably leave that state.folders.[] out as this long "0000..." differs for users as it seems.

EDIT3: and this is probably a MAC thing but i would suggest using an archive-thingy that doesn't write (imo useless) metadata or whatever into the archive.

cb@obelix /tmp/tmp.r5ZKG9ZsEz % unzip -l grommunio_default_signature.zip
Archive:  grommunio_default_signature.zip
  Length      Date    Time    Name
---------  ---------- -----   ----
        0  2026-05-29 15:56   grommunio_default_signature/
      163  2026-05-29 15:56   __MACOSX/._grommunio_default_signature
     1677  2026-05-29 15:54   grommunio_default_signature/neue_user_default_websettings_und_signatur.sh
      163  2026-05-29 15:54   __MACOSX/grommunio_default_signature/._neue_user_default_websettings_und_signatur.sh
     3139  2026-05-29 15:55   grommunio_default_signature/signatur_anwenden.sh
      163  2026-05-29 15:55   __MACOSX/grommunio_default_signature/._signatur_anwenden.sh
       89  2026-05-29 15:56   grommunio_default_signature/signatur_domain1.html
      163  2026-05-29 15:56   __MACOSX/grommunio_default_signature/._signatur_domain1.html
     3402  2026-05-29 15:56   grommunio_default_signature/websettings_defaults.json
      163  2026-05-29 15:56   __MACOSX/grommunio_default_signature/._websettings_defaults.json
       89  2026-05-29 15:56   grommunio_default_signature/signatur_domain2.html
      163  2026-05-29 15:56   __MACOSX/grommunio_default_signature/._signatur_domain2.html
---------                     -------
     9374                     12 files

EDIT4: I'm a bit confused about the # 2. Initiallauf
You are creating a list of all mailboxes, copy it to the db_file and then exit. Wouldn't this prevent any initial signature creation of any mailbox that existed on the first and second-run as those mailboxes will be treated as "already initialized" from what i can see from your comm -13 command?

working on some improvements right now...