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#!/bin/sh
# converts kasi.sh key-value pairs to kasi.el sexps
# kasi.sh format
# password_on_first_line
# Username: someone
# Email: bob@example.org
# TOTP: some_base32_string
# anything else can go here too
# kasi.el format
# -*- mode: lisp -*-
# ((password "password_here")
# (username "someone")
# (email "bob@example.org")
# (totp "some_base32_string")
# (extra-content "\
# anything not matched
# goes in here")
#
# if any of the fields are not parsed/found in original, it will be
# set to nil in sexp
KASI_DIR="/data/kasi"
KASI_EXT=".age"
KASI_DECRYPT="age -d -i $HOME/.ssh/id_ed25519"
KASI_ENCRYPT="age -R $HOME/.ssh/id_ed25519.pub"
lisp_val() {
if [ -z "$1" ]; then
printf 'nil'
else
printf '"%s"' "$(printf '%s' "$1" | sed 's/\\/\\\\/g; s/"/\\"/g')"
fi
}
convert() {
f="${KASI_DIR}/${1}${KASI_EXT}"
contents="$($KASI_DECRYPT "$f")" || {
printf 'error: failed to decrypt %s\n' "$f" >&2
return 1
}
first_line=$(printf '%s\n' "$contents" | sed -n '1p')
second_line=$(printf '%s\n' "$contents" | sed -n '2p')
last_char=$(printf '%s' "$contents" | tail -c 1)
if [ "$first_line" = "; -*- mode: lisp -*-" ] && [ "${second_line#((}" != "$second_line" ] && [ "$last_char" = ")" ]; then
printf 'skipping %s (already converted)\n' "$1" >&2
return 0
fi
password=$(printf '%s\n' "$contents" | sed -n '1p')
username=$(printf '%s\n' "$contents" | sed -n 's/^Username:[[:space:]]*//p' | sed 's/[[:space:]]*$//' | head -1)
email=$(printf '%s\n' "$contents" | sed -n 's/^Email:[[:space:]]*//p' | sed 's/[[:space:]]*$//' | head -1)
totp=$(printf '%s\n' "$contents" | sed -n 's/^TOTP:[[:space:]]*//p' | sed 's/[[:space:]]*$//' | head -1)
extra=$(printf '%s\n' "$contents" | awk 'NR > 1 && !/^(Username|Email|TOTP):/ && NF')
printf '; -*- mode: lisp -*-\n'
printf '((password %s)\n' "$(lisp_val "$password")"
printf ' (username %s)\n' "$(lisp_val "$username")"
printf ' (email %s)\n' "$(lisp_val "$email")"
printf ' (totp %s)\n' "$(lisp_val "$totp")"
if [ -z "$extra" ]; then
printf ' (extra-content nil))\n'
else
esc=$(printf '%s' "$extra" | sed 's/\\/\\\\/g; s/"/\\"/g')
printf ' (extra-content "\\\n%s"))\n' "$esc"
fi
}
cd "$KASI_DIR"
for i in */*"$KASI_EXT"; do
i="${i%%$KASI_EXT}"
j="$(mktemp)"
convert "$i" > "$j"
$KASI_ENCRYPT <"$j" >"$i""$KASI_EXT"
rm "$j"
done
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