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Diffstat (limited to 'package/network/services/wireguard/files/wireguard_watchdog')
-rw-r--r-- | package/network/services/wireguard/files/wireguard_watchdog | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/package/network/services/wireguard/files/wireguard_watchdog b/package/network/services/wireguard/files/wireguard_watchdog deleted file mode 100644 index 5fbbeafec1..0000000000 --- a/package/network/services/wireguard/files/wireguard_watchdog +++ /dev/null @@ -1,60 +0,0 @@ -#!/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 |