#!/bin/sh

# PROVIDE: zerotier
# REQUIRE: FILESYSTEMS devfs
# BEFORE:  pf ipfw
# KEYWORD: shutdown
#
# Add these lines to /etc/rc.conf.local or /etc/rc.conf
# to enable this service:
#
# zerotier_enable (bool):	Set to NO by default.
#				Set it to YES to enable zerotier.
# zerotier_wait_for_net (bool):	Set to NO by default. Use for DHCP interfaces only
#				Set it to YES to require zerotier to wait until online
# zerotier_alias_6addrs (str):	Space-separated list of inet6 addresses to alias onto
#				the ZeroTier interface after it comes up. Useful for
#				containers using --network=host that need a specific
#				6plane address assigned. Example:
#				zerotier_alias_6addrs="fc::9/128"

. /etc/rc.subr

name=zerotier
rcvar=zerotier_enable
desc="peer-to-peer software-defined networking"

load_rc_config $name

: ${zerotier_enable:=NO}
: ${zerotier_wait_for_net:=NO}
: ${zerotier_alias_6addrs:=}

required_modules=%%ZEROTIER_IF_TAP%%

pidfile="/var/run/${name}.pid"
start_precmd="install -o root /dev/null ${pidfile}"

command=/usr/sbin/daemon
command_args=" \
	-c \
	-t ${name} \
	-r \
	-P ${pidfile} \
	%%ZEROTIER_SYSLOG%% \
	%%PREFIX%%/sbin/${name}-one /var/db/${name}-one/"

start_postcmd=start_postcmd

start_postcmd()
{   if checkyesno zerotier_wait_for_net; then
        zerotier_count=5
        until %%PREFIX%%/bin/zerotier-cli status |egrep -o ONLINE\$; do
            warn ${name} is waiting for ONLINE status
            sleep 2
            zerotier_count=$((zerotier_count-1))
            test $zerotier_count -le 0 && break
        done
        if test $zerotier_count -le 0; then
            warn ${name} still not ONLINE, stopped blocking
        else
            warn ${name} is ONLINE
        fi
    fi
    if [ -n "${zerotier_alias_6addrs}" ]; then
        zerotier_iface=$(%%PREFIX%%/bin/zerotier-cli -j listnetworks 2>/dev/null \
            | %%PREFIX%%/bin/jq -r '.[0].portDeviceName // empty')
        if [ -n "${zerotier_iface}" ]; then
            for addr in ${zerotier_alias_6addrs}; do
                ifconfig ${zerotier_iface} inet6 ${addr} alias || \
                    warn "${name}: failed to alias ${addr} on ${zerotier_iface}"
            done
        else
            warn "${name}: zerotier_alias_6addrs set but no ZeroTier interface found"
        fi
    fi
}

run_rc_command "$1"