Fediversity/launch/.terraform/modules/pixelfed.deploy/deploy_nixos/unpack-keys.sh

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#!/usr/bin/env bash
#
# Unpacks the packed-keys.json into individual keys
set -euo pipefail
shopt -s nullglob
keys_file=${1:-packed-keys.json}
keys_dir=/var/keys
if [[ ! -f "$keys_file" ]]; then
echo "error: $keys_file not found"
exit 1
fi
# Fallback if jq is not installed
if ! type -p jq &>/dev/null; then
jqOut=$(nix-build '<nixpkgs>' -A jq)
jq() {
"$jqOut/bin/jq" "$@"
}
fi
# cleanup
mkdir -m 0750 -p "$keys_dir"
chown -v root:keys "$keys_dir"
chmod -v 0750 "$keys_dir"
for key in "$keys_dir"/* ; do
rm -v "$key"
done
if [[ $(< "$keys_file") = "{}" ]]; then
echo "no keys to unpack"
exit
fi
echo "unpacking $keys_file"
# extract the keys from .packed.json
for keyname in $(jq -S -r 'keys[]' "$keys_file"); do
echo "unpacking: $keyname"
jq -r ".\"$keyname\"" < "$keys_file" > "$keys_dir/$keyname"
chmod 0640 "$keys_dir/$keyname"
chown root:keys "$keys_dir/$keyname"
done
echo "unpacking done"