wagon/back/lib/wg_peer_add

#!/bin/bash
# FILE:       	wgapi:back/lib/wg/peer/add
# DESCRIPTION:	Add a new peer to a wireguard interface
# USAGE:      	add pubkey psk allowedips
# ERRORS:
# 	3: Bad usage
# 	4: config not found
# 	5: wg binary not found
# 	6: wg command failed

CONFIG_FILE='/etc/wgapi/config'
if ! [ ${#} -eq 3 ]; then
	printf 'ERROR! %s Bad usage: %s\n' "${0}" "${*}"
	exit 3
fi & if ! [ -f "${CONFIG_FILE}" ]; then
	printf 'ERROR! %s could not find config at %s!\n' "${0}" "${CONFIG_FILE}"
	exit 4
fi & if ! [ -x /usr/bin/wg ]; then
	printf 'ERROR! /usr/bin/wg not found\n'
	exit 5
fi; source "${CONFIG_FILE}"
pubkey="${1}"
psk="${2}"
allowedips="${3}"

if ! res="$(printf '%s\n' "${psk}" | sudo /usr/bin/wg set "${TLD}" peer "${pubkey}" preshared-key /dev/stdin allowed-ips "${allowedips}")"; then
	printf '%s %s\n' "${?}" "${res}" >&2
	exit 6
fi