#!/bin/bash
# FILE:       	fed_peer_add
# DESCRIPTION:	Sends details about a new peer to a federated server
# USAGE:      	fed_peer_add server pubkey psk allowedips
# ERRORS:
# 	 3: Bad usage
# 	 4: Config file not found
# 	5: wg binary not found
# 	6: curl command failed

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

if res="$(curl --silent --request POST "wg-test-fed.${server}.${TLD}?pubkey=${pubkey}&psk=${psk}&ips=${allowedips}")"; then
	printf 'Sent peer %s to federated server %s\n' "${pubkey}" "${server}" >&2
else
	printf 'ERROR: Failed to send peer to federated server %s: %s\n' "${server}" "${res}" >&2
	exit 6
fi