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