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#!/usr/bin/env bash
#
# Copyright 2023 David Vazgenovich Shakaryan
qargs() {
local arg str
for arg; do
[[ "${arg:-*}" =~ [^A-Za-z0-9%+./:=@_-] ]] && arg="${arg@Q}"
str+=" ${arg}"
done
printf '%s\n' "${str:1}"
}
temp_dest="${1}"
link_dest="${2}"
[[ -n "${link_dest}" ]] || exit 0
[[ "${temp_dest}" =~ ^(rclone://([^:]+):)(.+) ]] || exit 1
prefix="${BASH_REMATCH[1]}"
remote="${BASH_REMATCH[2]}"
path="${BASH_REMATCH[3]}"
[[ "${link_dest}" == "${prefix}"* ]] || exit 1
link="${link_dest#"${prefix}"}"
conf="$(rclone config dump)" || exit 1
read -rd '' JQ <<'EOF'
.[$k]
| select(.type == "crypt" or .type == "sftp") // error("not crypt or sftp")
| [.type, .remote]
| @tsv
EOF
IFS=$'\t' read -r r_type r_remote < <(
jq -rc --arg k "${remote}" "${JQ}" <<<"${conf}") || exit 1
if [[ "${r_type}" == 'crypt' ]]; then
crypt="${remote}"
[[ "${r_remote}" =~ ^([^:]+):(.*) ]] || exit 1
remote="${BASH_REMATCH[1]}"
base="${BASH_REMATCH[2]:+${BASH_REMATCH[2]}/}"
upath=0
ulink=0
while IFS=$'\t' read -r k v; do
[[ "${k% }" == "${path}" ]] && path="${base}${v# }" && upath=1
[[ "${k% }" == "${link}" ]] && link="${base}${v# }" && ulink=1
done < <(rclone cryptdecode --reverse "${crypt}:" "${path}" "${link}")
wait "$!" || exit 1
((ulink && upath)) || exit 1
fi
read -rd '' JQ <<'EOF'
.[$k]
| select(.type == "sftp") // error("not sftp")
| select(.key_file_pass | not) // error("key uses passphrase")
| [
(.key_file | select(.) // error("missing key")
| "-i", (sub("^~"; env.HOME) | @sh)),
(.known_hosts_file | select(.)
| "-o", ("UserKnownHostsFile=\(sub("^~"; env.HOME))" | @sh)),
(.port | select(.) | "-p", @sh),
("\(.user // error("missing user"))@\(.host // error("missing host"))"
| @sh)
]
| join(" ")
EOF
mapfile -td '' args < <(
jq -rc --arg k "${remote}" "${JQ}" <<<"${conf}" | \
xargs -r printf '%s\0'
[[ "${PIPESTATUS[0]}" -eq 0 && "${PIPESTATUS[1]}" -eq 0 ]])
wait "$!" || exit 1
ssh_cmd=(ssh -o BatchMode=yes "${args[@]}")
cmd=("${ssh_cmd[@]}"
"cp -al $(printf '%q' "${link}") $(printf '%q' "${path}")")
echo "* $(qargs "${cmd[@]}")"
"${cmd[@]}" || exit 1
"${ssh_cmd[@]}" "touch -c ${path@Q}"
exit 0
|
