wireguard-tools/contrib/json/wg-json

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#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
exec < <(exec wg show all dump)
printf '{'
while read -r -d $'\t' device; do
if [[ $device != "$last_device" ]]; then
[[ -z $last_device ]] && printf '\n' || printf '%s,\n' "$end"
last_device="$device"
read -r private_key public_key listen_port fwmark
printf '\t"%s": {' "$device"
delim=$'\n'
[[ $private_key == "(none)" ]] || { printf '%s\t\t"privateKey": "%s"' "$delim" "$private_key"; delim=$',\n'; }
[[ $public_key == "(none)" ]] || { printf '%s\t\t"publicKey": "%s"' "$delim" "$public_key"; delim=$',\n'; }
[[ $listen_port == "0" ]] || { printf '%s\t\t"listenPort": %u' "$delim" $(( $listen_port )); delim=$',\n'; }
[[ $fwmark == "off" ]] || { printf '%s\t\t"fwmark": %u' "$delim" $(( $fwmark )); delim=$',\n'; }
printf '%s\t\t"peers": {' "$delim"; end=$'\n\t\t}\n\t}'
delim=$'\n'
else
read -r public_key preshared_key endpoint allowed_ips latest_handshake transfer_rx transfer_tx persistent_keepalive
printf '%s\t\t\t"%s": {' "$delim" "$public_key"
delim=$'\n'
[[ $preshared_key == "(none)" ]] || { printf '%s\t\t\t\t"presharedKey": "%s"' "$delim" "$preshared_key"; delim=$',\n'; }
[[ $endpoint == "(none)" ]] || { printf '%s\t\t\t\t"endpoint": "%s"' "$delim" "$endpoint"; delim=$',\n'; }
[[ $latest_handshake == "0" ]] || { printf '%s\t\t\t\t"latestHandshake": %u' "$delim" $(( $latest_handshake )); delim=$',\n'; }
[[ $transfer_rx == "0" ]] || { printf '%s\t\t\t\t"transferRx": %u' "$delim" $(( $transfer_rx )); delim=$',\n'; }
[[ $transfer_tx == "0" ]] || { printf '%s\t\t\t\t"transferTx": %u' "$delim" $(( $transfer_tx )); delim=$',\n'; }
[[ $persistent_keepalive == "off" ]] || { printf '%s\t\t\t\t"persistentKeepalive": %u' "$delim" $(( $persistent_keepalive )); delim=$',\n'; }
printf '%s\t\t\t\t"allowedIps": [' "$delim"
delim=$'\n'
if [[ $allowed_ips != "(none)" ]]; then
old_ifs="$IFS"
IFS=,
for ip in $allowed_ips; do
printf '%s\t\t\t\t\t"%s"' "$delim" "$ip"
delim=$',\n'
done
IFS="$old_ifs"
delim=$'\n'
fi
printf '%s\t\t\t\t]' "$delim"
printf '\n\t\t\t}'
delim=$',\n'
fi
done
printf '%s\n' "$end"
printf '}\n'