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#!/bin/sh
# Copyright 2016-2017 Dan Luedtke <mail@danrl.com>
# Licensed to the public under the Apache License 2.0.
WG=/usr/bin/wg
if [ ! -x $WG ]; then
logger -t "wireguard" "error: missing wireguard-tools (${WG})"
exit 0
fi
[ -n "$INCLUDE_ONLY" ] || {
. /lib/functions.sh
. ../netifd-proto.sh
init_proto "$@"
}
proto_wireguard_init_config() {
proto_config_add_string "private_key"
proto_config_add_int "listen_port"
proto_config_add_int "mtu"
proto_config_add_string "fwmark"
available=1
no_proto_task=1
}
proto_wireguard_setup_peer() {
local peer_config="$1"
local public_key
local preshared_key
local allowed_ips
local route_allowed_ips
local endpoint_host
local endpoint_port
local persistent_keepalive
config_get public_key "${peer_config}" "public_key"
config_get preshared_key "${peer_config}" "preshared_key"
config_get allowed_ips "${peer_config}" "allowed_ips"
config_get_bool route_allowed_ips "${peer_config}" "route_allowed_ips" 0
config_get endpoint_host "${peer_config}" "endpoint_host"
config_get endpoint_port "${peer_config}" "endpoint_port"
config_get persistent_keepalive "${peer_config}" "persistent_keepalive"
# peer configuration
echo "[Peer]" >> "${wg_cfg}"
echo "PublicKey=${public_key}" >> "${wg_cfg}"
if [ "${preshared_key}" ]; then
echo "PresharedKey=${preshared_key}" >> "${wg_cfg}"
fi
for allowed_ip in $allowed_ips; do
echo "AllowedIPs=${allowed_ip}" >> "${wg_cfg}"
done
if [ "${endpoint_host}" ]; then
case "${endpoint_host}" in
*:*)
endpoint="[${endpoint_host}]"
;;
*)
endpoint="${endpoint_host}"
;;
esac
if [ "${endpoint_port}" ]; then
endpoint="${endpoint}:${endpoint_port}"
else
endpoint="${endpoint}:51820"
fi
echo "Endpoint=${endpoint}" >> "${wg_cfg}"
fi
if [ "${persistent_keepalive}" ]; then
echo "PersistentKeepalive=${persistent_keepalive}" >> "${wg_cfg}"
fi
# add routes for allowed ips
if [ ${route_allowed_ips} -ne 0 ]; then
for allowed_ip in ${allowed_ips}; do
case "${allowed_ip}" in
*:*/*)
proto_add_ipv6_route "${allowed_ip%%/*}" "${allowed_ip##*/}"
;;
*.*/*)
proto_add_ipv4_route "${allowed_ip%%/*}" "${allowed_ip##*/}"
;;
*:*)
proto_add_ipv6_route "${allowed_ip%%/*}" "128"
;;
*.*)
proto_add_ipv4_route "${allowed_ip%%/*}" "32"
;;
esac
done
fi
}
proto_wireguard_setup() {
local config="$1"
local wg_dir="/tmp/wireguard"
local wg_cfg="${wg_dir}/${config}"
local private_key
local listen_port
local mtu
# load configuration
config_load network
config_get private_key "${config}" "private_key"
config_get listen_port "${config}" "listen_port"
config_get addresses "${config}" "addresses"
config_get mtu "${config}" "mtu"
config_get fwmark "${config}" "fwmark"
config_get ip6prefix "${config}" "ip6prefix"
config_get nohostroute "${config}" "nohostroute"
# create interface
ip link del dev "${config}" 2>/dev/null
ip link add dev "${config}" type wireguard
if [ "${mtu}" ]; then
ip link set mtu "${mtu}" dev "${config}"
fi
proto_init_update "${config}" 1
# generate configuration file
umask 077
mkdir -p "${wg_dir}"
echo "[Interface]" > "${wg_cfg}"
echo "PrivateKey=${private_key}" >> "${wg_cfg}"
if [ "${listen_port}" ]; then
echo "ListenPort=${listen_port}" >> "${wg_cfg}"
fi
if [ "${fwmark}" ]; then
echo "FwMark=${fwmark}" >> "${wg_cfg}"
fi
config_foreach proto_wireguard_setup_peer "wireguard_${config}"
# apply configuration file
${WG} setconf ${config} "${wg_cfg}"
WG_RETURN=$?
# delete configuration file
rm -f "${wg_cfg}"
# check status
if [ ${WG_RETURN} -ne 0 ]; then
sleep 5
proto_setup_failed "${config}"
exit 1
fi
# add ip addresses
for address in ${addresses}; do
case "${address}" in
*:*/*)
proto_add_ipv6_address "${address%%/*}" "${address##*/}"
;;
*.*/*)
proto_add_ipv4_address "${address%%/*}" "${address##*/}"
;;
*:*)
proto_add_ipv6_address "${address%%/*}" "128"
;;
*.*)
proto_add_ipv4_address "${address%%/*}" "32"
;;
esac
done
# support ip6 prefixes
for prefix in ${ip6prefix}; do
proto_add_ipv6_prefix "$prefix"
done
# endpoint dependency
if [ "${nohostroute}" != "1" ]; then
wg show "${config}" endpoints | \
sed -E 's/\[?([0-9.:a-f]+)\]?:([0-9]+)/\1 \2/' | \
while IFS=$'\t ' read -r key address port; do
[ -n "${port}" ] || continue
proto_add_host_dependency "${config}" "${address}"
done
fi
proto_send_update "${config}"
}
proto_wireguard_teardown() {
local config="$1"
ip link del dev "${config}" >/dev/null 2>&1
}
[ -n "$INCLUDE_ONLY" ] || {
add_protocol wireguard
}
|
