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#!/bin/sh /etc/rc.common
START=90
USE_PROCD=1
TID="200"; FW_MARK="0x010000"; IPSET="vpnbypass";
output() {
[ -z "$verbosity" ] && config_get verbosity 'config' 'verbosity' '2'
[ -n "$2" -a $((verbosity)) -ne $(($2)) ] && return 0;
[ -t 1 ] && echo -e -n "$1"
[ $(echo -e -n "$1" | wc -l) -gt 0 ] && logger -t "vpnbypass[$$]" "$(echo -e -n ${logmsg}${1})" && logmsg='' || logmsg=${logmsg}${1}
}
vpnbypass_enabled() {
config_get_bool enabled 'config' 'enabled' 0
[ $((enabled)) -gt 0 ] && return 0 || { output "VPNBypass is not enabled in the config file!\nTo enable, run 'uci set vpnbypass.config.enabled=1; uci commit vpnbypass'\n"; return 1; }
}
boot() { ubus -t 30 wait_for network.interface && rc_procd start_service || output 'ERROR: Failed to settle network interface!\n'; }
start_service() {
local ll
config_load vpnbypass
vpnbypass_enabled || return 1
[ -d /etc/openvpn ] || return 1
config_get lports 'config' 'localport'
config_get rports 'config' 'remoteport'
config_get routes 'config' 'remotesubnet'
config_get ranges 'config' 'localsubnet'
config_get domains 'config' 'domain'
procd_open_instance
procd_set_param stdout 1
procd_set_param stderr 1
procd_close_instance
. /lib/functions/network.sh; network_get_ipaddr wanip wan; network_get_gateway gwip wan; network_get_ipaddr lanip lan
[ ! "$wanip" ] && output 'ERROR: Could not get wan ip\n' && exit 0
[ ! "$gwip" ] && output 'ERROR: Could not get wan gateway\n' && exit 0
for ll in ${routes}; do (ip route del $ll; ip route add $ll via $gwip) >/dev/null 2>&1; done
(ip rule del fwmark $FW_MARK table $TID; iptables -t mangle -F; ipset -F $IPSET; ipset -X $IPSET) >/dev/null 2>&1
(ip route flush table $TID; ip route flush cache) >/dev/null 2>&1
(ip route add default via $gwip table $TID; ip route flush cache) >/dev/null 2>&1
(modprobe xt_set || modprobe ip_set; insmod ip_set_hash_ip) >/dev/null 2>&1
(ipset -N $IPSET iphash -q; ipset -F $IPSET) >/dev/null 2>&1
for ll in ${lports}; do iptables -t mangle -A PREROUTING -p tcp -m multiport --sport $ll -j MARK --set-mark $FW_MARK/$FW_MARK -m comment --comment "vpnbypass"; done
for ll in ${rports}; do iptables -t mangle -A PREROUTING -p tcp -m multiport --dport $ll -j MARK --set-mark $FW_MARK/$FW_MARK -m comment --comment "vpnbypass"; done
for ll in ${ranges}; do iptables -t mangle -I PREROUTING -s $ll -j MARK --set-mark $FW_MARK/$FW_MARK -m comment --comment "vpnbypass"; done
iptables -t mangle -A PREROUTING -m set --match-set $IPSET dst -j MARK --set-mark $FW_MARK/$FW_MARK -m comment --comment "vpnbypass"
ip rule add fwmark $FW_MARK table $TID
output "vpnbypass started with TID: $TID FW_MARK: $FW_MARK\n"
}
stop_service() {
local ll
config_load vpnbypass
vpnbypass_enabled || return 1
config_get routes 'config' 'remotesubnet'
[ -d /etc/openvpn ] || return 1
rm -f /etc/hotplug.d/firewall/${START}-${IPSET}
. /lib/functions/network.sh; network_get_ipaddr wanip wan; network_get_gateway gwip wan; network_get_ipaddr lanip lan
[ ! "$wanip" ] && output 'ERROR: Could not get wan ip\n' && exit 0
[ ! "$gwip" ] && output 'ERROR: Could not get wan gateway\n' && exit 0
for ll in ${routes}; do ip route del $ll >/dev/null 2>&1; done
# iptables-save | grep -Fv -- "vpnbypass" | iptables-restore
(ip rule del fwmark $FW_MARK table $TID; iptables -t mangle -F; ipset -F $IPSET; ipset -X $IPSET) >/dev/null 2>&1
(ip route flush table $TID; ip route flush cache) >/dev/null 2>&1
output "vpnbypass stopped\n"
}
service_triggers() {
procd_add_reload_trigger 'vpnbypass'
procd_add_reload_interface_trigger 'wan'
}