#!/bin/sh
#
# $FreeBSD: head/net/frr7/files/frr.in 569159 2021-03-24 20:52:13Z olivier $
#

# PROVIDE: frr dynamicrouting
# REQUIRE: netif routing
# KEYWORD: nojailvnet shutdown

# Add the following line to /etc/rc.conf to enable frr:
#  frr_enable="YES"
#
# You may also wish to use the following variables to fine-tune startup:
# Enable Integrated configuration mode (using the single configuration file
# frr.conf in place of one file for each dameon)
#  frr_vtysh_boot="YES"
# Selecting limited set of daemons to run
#  frr_daemons="zebra babeld bfdd bgpd eigrpd fabricd isisd ospfd ospf6d ripd ripngd staticd"
# Global tuning
#  frr_flags=""
# Per daemon tuning may be done with daemon_name_flags
#  zebra_flags="-P 0"
#  bgpd_flags="-nrP 0" and so on
# If you want to give the routing daemons a chance to catchup before
# continuing, set frr_wait_for to a "default" or certain prefix.
#  frr_wait_for="default"
# Set the time limit for the wait.
#  frr_wait_seconds="90"
#
# If the frr daemons require additional shared libraries to start,
# use the following variable to run ldconfig(8) in advance:
#  frr_extralibs_path="/usr/local/lib ..."
#
# This RC script was adapted from the net/quagga port

. /etc/rc.subr

name=frr
rcvar=${name}_enable

start_postcmd=start_postcmd
stop_postcmd="rm -f $pidfile"
configtest_cmd=check_config
extra_commands=configtest
command_args="-d"

load_rc_config $name
: ${frr_enable:="NO"}
: ${frr_flags:=""}
: ${frr_daemons:="zebra babeld bfdd bgpd eigrpd fabricd isisd ospfd ospf6d ripd ripngd staticd"}
: ${frr_vtysh_boot:="NO"}
: ${frr_wait_for:=""}
: ${frr_wait_seconds:="90"}

check_config()
{
    echo "Checking $daemon.conf"
	# pimd doesn't support -C
	if [ "$daemon" = "pimd" ]; then
		echo "Ignored"
	else
    	$command $daemon_flags -C
    	result=$?
    	if [ "$result" -eq "0" ]; then
			echo "OK"
    	else
			echo "FAILED"
			exit
    	fi
	fi
}

start_postcmd()
{
	local waited_for
	waited_for=0
	# Wait only when last daemon has started.
	if [ "${frr_daemons}" = "${frr_daemons% ${name}}" ]; then
		return;
	fi
        if [ -n "${frr_wait_for}" ]; then
		echo Waiting for ${frr_wait_for} route...
		while [ ${waited_for} -lt ${frr_wait_seconds} ]; do
			/sbin/route -n get ${frr_wait_for} >/dev/null 2>&1 && break;
			waited_for=$((waited_for+1))
			sleep 1;
		done
		[ ${waited_for} -lt ${frr_wait_seconds} ] || echo Giving up...
	fi
}

do_cmd()
{
	local ret
	ret=0
	frr_cmd=$1
	if checkyesno frr_vtysh_boot && ( [ ${frr_cmd} = "restart" ] || [ ${frr_cmd} = "start" ] ); then
		echo "Checking intergrated config..."
		daemon="vtysh"
		daemon_flags=""
		command=%%PREFIX%%/bin/${daemon}
		check_config
	fi
	for daemon in ${frr_daemons}; do
	    command=%%PREFIX%%/sbin/${daemon}
	    pidfile=/var/run/frr/${daemon}.pid
		if ! checkyesno frr_vtysh_boot; then
 			required_files=%%ETCDIR%%/${daemon}.conf
			if [ ${frr_cmd} = "restart" ] || [ ${frr_cmd} = "start" ]; then
 				check_config
			fi
			if [ ${frr_cmd} = "start" ] && ! [ -f ${required_files} ]; then
				continue
			fi
		fi
	    if [ ${frr_cmd} = "stop" ] && [ -z "$(check_process ${command})" ]; then
			continue
	    fi
	    eval flags=\$\{${daemon}_flags:-\"${frr_flags}\"\}
	    name=${daemon}
	    _rc_restart_done=false
	    run_rc_command "$1" || ret=1
	done
	if checkyesno frr_vtysh_boot && ( [ ${frr_cmd} = "restart" ] || [ ${frr_cmd} = "start" ] ); then
	    echo "Booting for integrated-vtysh-config..."
	    %%PREFIX%%/bin/vtysh -b
	fi
	return ${ret}
}

frr_cmd=$1

case "$1" in
    force*)
		frr_cmd=${frr_cmd#force}
		;;
    fast*)
		frr_cmd=${frr_cmd#fast}
		;;
esac
shift

if [ $# -ge 1 -a "$1" != "all" ]; then
	frr_daemons="$*"
fi

case "${frr_cmd}" in
    start|quietstart)
		if [ -n "${frr_extralibs_path}" ]; then
	    	/sbin/ldconfig -m ${frr_extralibs_path}
		fi
		# Why should I need to add this check ?
		checkyesno frr_enable && do_cmd "start"
		;;
    stop)
		frr_daemons=$(reverse_list ${frr_daemons})
		do_cmd "stop"
		;;
    restart)
		frr_daemons=$(reverse_list ${frr_daemons})
		do_cmd "stop"
		frr_daemons=$(reverse_list ${frr_daemons})
		checkyesno frr_enable && do_cmd "start"
		;;
    *)
		do_cmd "${frr_cmd}"
		;;
esac