diff options
Diffstat (limited to 'package/network/utils')
3 files changed, 299 insertions, 0 deletions
diff --git a/package/network/utils/wireguard-tools/Makefile b/package/network/utils/wireguard-tools/Makefile new file mode 100644 index 0000000000..2f6d307094 --- /dev/null +++ b/package/network/utils/wireguard-tools/Makefile @@ -0,0 +1,54 @@ +# +# Copyright (C) 2016-2019 Jason A. Donenfeld <Jason@zx2c4.com> +# Copyright (C) 2016 Baptiste Jonglez <openwrt@bitsofnetworks.org> +# Copyright (C) 2016-2017 Dan Luedtke <mail@danrl.com> +# +# This is free software, licensed under the GNU General Public License v2. +# See /LICENSE for more information. + +include $(TOPDIR)/rules.mk +include $(INCLUDE_DIR)/kernel.mk + +PKG_NAME:=wireguard-tools + +PKG_VERSION:=1.0.20191226 +PKG_RELEASE:=1 + +PKG_SOURCE:=wireguard-tools-$(PKG_VERSION).tar.xz +PKG_SOURCE_URL:=https://git.zx2c4.com/wireguard-tools/snapshot/ +PKG_HASH:=aa8af0fdc9872d369d8c890a84dbc2a2466b55795dccd5b47721b2d97644b04f + +PKG_LICENSE:=GPL-2.0 +PKG_LICENSE_FILES:=COPYING + +PKG_BUILD_PARALLEL:=1 +PKG_USE_MIPS16:=0 + +include $(INCLUDE_DIR)/package.mk +include $(INCLUDE_DIR)/package-defaults.mk + +MAKE_PATH:=src +MAKE_VARS += PLATFORM=linux + +define Package/wireguard-tools + $(call Package/wireguard/Default) + TITLE:=WireGuard userspace control program (wg) + DEPENDS:=+libmnl +ip +endef + +define Package/wireguard-tools/description + $(call Package/wireguard/Default/description) + + This package provides the userspace control program for WireGuard, + `wg(8)`, a netifd protocol helper, and a re-resolve watchdog script. +endef + +define Package/wireguard-tools/install + $(INSTALL_DIR) $(1)/usr/bin/ + $(INSTALL_BIN) $(PKG_BUILD_DIR)/src/wg $(1)/usr/bin/ + $(INSTALL_BIN) ./files/wireguard_watchdog $(1)/usr/bin/ + $(INSTALL_DIR) $(1)/lib/netifd/proto/ + $(INSTALL_BIN) ./files/wireguard.sh $(1)/lib/netifd/proto/ +endef + +$(eval $(call BuildPackage,wireguard-tools)) diff --git a/package/network/utils/wireguard-tools/files/wireguard.sh b/package/network/utils/wireguard-tools/files/wireguard.sh new file mode 100644 index 0000000000..4c811c6ba9 --- /dev/null +++ b/package/network/utils/wireguard-tools/files/wireguard.sh @@ -0,0 +1,185 @@ +#!/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" + + 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 + + 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}/${config}" + + local private_key + local listen_port + local mtu + + config_load network + config_get private_key "${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" + + 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 + + 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=$? + + rm -f "${wg_cfg}" + + if [ ${WG_RETURN} -ne 0 ]; then + sleep 5 + proto_setup_failed "${config}" + exit 1 + fi + + 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 + + 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 +} diff --git a/package/network/utils/wireguard-tools/files/wireguard_watchdog b/package/network/utils/wireguard-tools/files/wireguard_watchdog new file mode 100644 index 0000000000..5fbbeafec1 --- /dev/null +++ b/package/network/utils/wireguard-tools/files/wireguard_watchdog @@ -0,0 +1,60 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright (C) 2018 Aleksandr V. Piskunov <aleksandr.v.piskunov@gmail.com>. +# Copyright (C) 2015-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. +# +# This watchdog script tries to re-resolve hostnames for inactive WireGuard peers. +# Use it for peers with a frequently changing dynamic IP. +# persistent_keepalive must be set, recommended value is 25 seconds. +# +# Run this script from cron every minute: +# echo '* * * * * /usr/bin/wireguard_watchdog' >> /etc/crontabs/root + + +. /lib/functions.sh + +check_peer_activity() { + local cfg=$1 + local iface=$2 + local public_key + local endpoint_host + local endpoint_port + local persistent_keepalive + local last_handshake + local idle_seconds + + config_get public_key "${cfg}" "public_key" + config_get endpoint_host "${cfg}" "endpoint_host" + config_get endpoint_port "${cfg}" "endpoint_port" + persistent_keepalive=`wg show ${iface} persistent-keepalive | grep ${public_key} | awk '{print $2}'` + + # only process peers with endpoints and keepalive set + [ -z ${endpoint_host} ] && return 0; + [ -z ${persistent_keepalive} -o ${persistent_keepalive} = "off" ] && return 0; + + # skip IP addresses + # check taken from packages/net/ddns-scripts/files/dynamic_dns_functions.sh + local IPV4_REGEX="[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}" + local IPV6_REGEX="\(\([0-9A-Fa-f]\{1,4\}:\)\{1,\}\)\(\([0-9A-Fa-f]\{1,4\}\)\{0,1\}\)\(\(:[0-9A-Fa-f]\{1,4\}\)\{1,\}\)" + local IPV4=$(echo ${endpoint_host} | grep -m 1 -o "$IPV4_REGEX$") # do not detect ip in 0.0.0.0.example.com + local IPV6=$(echo ${endpoint_host} | grep -m 1 -o "$IPV6_REGEX") + [ -n "${IPV4}" -o -n "${IPV6}" ] && return 0; + + # re-resolve endpoint hostname if not responding for too long + last_handshake=`wg show ${iface} latest-handshakes | grep ${public_key} | awk '{print $2}'` + [ -z ${last_handshake} ] && return 0; + idle_seconds=$((`date +%s`-${last_handshake})) + [ ${idle_seconds} -lt 150 ] && return 0; + logger -t "wireguard_monitor" "${iface} endpoint ${endpoint_host}:${endpoint_port} is not responding for ${idle_seconds} seconds, trying to re-resolve hostname" + wg set ${iface} peer ${public_key} endpoint "${endpoint_host}:${endpoint_port}" +} + +# query ubus for all active wireguard interfaces +wg_ifaces=`ubus -S call network.interface dump | jsonfilter -e '@.interface[@.up=true]' | jsonfilter -a -e '@[@.proto="wireguard"].interface' | tr "\n" " "` + +# check every peer in every active wireguard interface +config_load network +for iface in $wg_ifaces; do + config_foreach check_peer_activity "wireguard_${iface}" "${iface}" +done |