#!/bin/sh /etc/rc.common
# Copyright (C) 2008-2015 OpenWrt.org

START=90
STOP=01

USE_PROCD=1
LLDPCLI=/usr/sbin/lldpcli
LLDPSOCKET=/var/run/lldpd.socket

find_release_info()
{
	[ -s /etc/openwrt_release ] && . /etc/openwrt_release
	[ -z "$DISTRIB_DESCRIPTION" ] && [ -s /etc/openwrt_version ] && \
		DISTRIB_DESCRIPTION="$(cat /etc/openwrt_version)"

	echo "${DISTRIB_DESCRIPTION:-Unknown OpenWrt release} @ $(cat /proc/sys/kernel/hostname)"
}

start_service() {
	. /lib/functions/network.sh

	local enable_cdp
	local enable_fdp
	local enable_sonmp
	local enable_edp
	local lldp_class
	local lldp_location
	local lldp_description
	local readonly_mode

	config_load 'lldpd'
	config_get_bool enable_cdp 'config' 'enable_cdp' 0
	config_get_bool enable_fdp 'config' 'enable_fdp' 0
	config_get_bool enable_sonmp 'config' 'enable_sonmp' 0
	config_get_bool enable_edp 'config' 'enable_edp' 0
	config_get lldp_class 'config' 'lldp_class'
	config_get lldp_location 'config' 'lldp_location'
	config_get lldp_description 'config' 'lldp_description' "$(find_release_info)"
	config_get_bool readonly_mode 'config' 'readonly_mode' 0

	local ifaces
	config_get ifaces 'config' 'interface'

	local iface ifnames=""
	for iface in $ifaces; do
		local ifname=""
		if network_get_device ifname "$iface" || [ -e "/sys/class/net/$iface" ]; then
			append ifnames "${ifname:-$iface}" ","
		fi
	done

	mkdir -p /var/run/lldp
	chown lldp:lldp /var/run/lldp

	procd_open_instance
	procd_set_param command /usr/sbin/lldpd
	procd_append_param command -d # don't daemonize, procd will handle that for us

	[ -n "$ifnames" ] && procd_append_param command -I "$ifnames"
	[ $enable_cdp -gt 0 ] && procd_append_param command '-c'
	[ $enable_fdp -gt 0 ] && procd_append_param command '-f'
	[ $enable_sonmp -gt 0 ] && procd_append_param command '-s'
	[ $enable_edp -gt 0 ] && procd_append_param command '-e'
	[ $readonly_mode -gt 0 ] && procd_append_param command '-r'
	[ -n "$lldp_class" ] && procd_append_param command -M "$lldp_class"
	[ -n "$lldp_description" ] && procd_append_param command -S "$lldp_description"

	# set auto respawn behavior
	procd_set_param respawn
	procd_append_param respawn 3600
	procd_append_param respawn 5
	procd_append_param respawn -1
	procd_close_instance
}

service_running() {
	pgrep -x /usr/sbin/lldpd &> /dev/null
}

reload_service() {
	running || return 1
	# Custom TLVs are special and should be
	# reloaded from config during lldpd reload
	$LLDPCLI -u $LLDPSOCKET unconfigure lldp custom-tlv &> /dev/null
	$LLDPCLI -u $LLDPSOCKET -c /etc/lldpd.conf -c /etc/lldpd.d &> /dev/null
	# Broadcast update over the wire
	$LLDPCLI -u $LLDPSOCKET update &> /dev/null
	return 0
}

stop_service() {
	rm -rf /var/run/lldp $LLDPSOCKET
}