Add suffix to ~/.local/share/yadm/archive to indicate encryption method

[rasa]

Is your feature request related to a problem?

yadm has to be configured the same on every decrypting system to match the settings on the encrypting system.

Describe the solution you'd like

Yadm uses the suffix of the archive to automatically decrypt the archive. Here are some examples:

yadm.cipher	yadm.openssl-ciphername	yadm.openssl-old	archive name
gpg			archive.gpg
openssl	(default)	false	archive.aes-256-cbc (or aes256)
openssl	(default)	true	archive.aes-256-cbc_old (or aes256_old)
openssl	aes-192-cbc	false	archive.aes-192-cbc (or aes192)
openssl	aes-192-cbc	true	archive.aes-192-cbc_old (or aes192_old)
transcrypt			archive.transcrypt
git-crypt			archive.git-crypt

We could also solve this by creating a file with the config settings, called say ~/.local/share/yadm/archive.conf, but parsing it could prove problematic, so using the file extension seems cleaner. But this would allow full backward compatibility.

[TheLocehiliosan]

This seems like it would add a lot of complication. What would happen if there are multiple archives in the repository?

[rasa]

This seems like it would add a lot of complication. What would happen if there are multiple archives in the repository?

Good point. Yadm would need to be smart enough to remove an old archive when a new archive is created. It might be too complicated, but if there's interest, I could explore creating a draft PR for discussion.

[rasa]

Another solution could be to add yadm save-config and yadm restore-config commands. Something akin to:

yadm config -l >~/.config/yadm/settings.conf
yadm add ~/.config/yadm/settings.conf

and

IFS=$'\n' read -d '' -r -a lines <~/.config/yadm/settings.conf
for line in "${lines[@]}"; do
  yadm config "${line%=*}" "${line##*=}"
done

Edit: and maybe a yadm show-config as well:

cat ~/.config/yadm/settings.conf

or

read -d '' -r settings <~/.config/yadm/settings.conf
printf '%s\n' "${settings}"

[github-actions[bot]]

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