#!/bin/sh /etc/rc.common
# Copyright (C) 2012 OpenWrt.org

START=60
SERVICE_USE_PID=1

CONFIGFILE="/var/etc/nbd-server.conf"


append_plain() {
	echo "$1" >> $CONFIGFILE
}

append_val_str() {
	local resultname="$1"
	local cfg="$2"
	local uciname="${3:-$1}"
	local value=

	config_get value "$cfg" "$uciname"

	if [ -z "$value" ]; then
		return
	fi
	append_plain "$resultname = $value"
}

append_val_bool() {
	local resultname="$1"
	local cfg="$2"
	local uciname="${3:-$1}"
	local value=

	config_get_bool value "$cfg" "$uciname"
	if [ -z "$value" ]; then
		return
	fi

	[ $value == 1 ] && value="true" || value="false"
	append_plain "$resultname = $value"
}

config_handle_generic() {
	local cfg="$1"

	append_plain "[generic]"
	append_val_str user "$cfg"
	append_val_str group "$cfg"
	append_val_str port "$cfg"
	append_val_str listenaddr "$cfg"
	append_val_bool allowlist "$cfg"
	append_val_str includedir "$cfg"
	append_val_bool oldstyle "$cfg"

	config_get_bool SERVICE_ENABLED "$cfg" enabled 0
}

config_handle_share() {
	local cfg="$1"

	append_plain
	append_plain "[$cfg]"
	append_val_str exportname "$cfg" filename
	append_val_str timeout "$cfg"
	append_val_str maxconnections "$cfg"
	append_val_str authfile "$cfg"
	append_val_str filesize "$cfg"
	append_val_str readonly "$cfg"
	append_val_str multifile "$cfg"
	append_val_str copyonwrite "$cfg"
	append_val_bool sparse_cow "$cfg"
	append_val_bool flush "$cfg"
	append_val_bool fua "$cfg"
	append_val_bool rotational "$cfg"
	append_val_bool sync "$cfg"
	append_val_bool discard "$cfg"
	append_val_str prerun "$cfg"
	append_val_str postrun "$cfg"
	append_val_str virtstyle "$cfg"
	append_val_str port "$cfg" oldstyle_port
	append_val_str listenaddr "$cfg" oldstyle_listenaddr
}

config_read() {

	mkdir -p $(dirname $CONFIGFILE)
	echo -n > $CONFIGFILE

	config_load nbd-server
	config_foreach config_handle_generic nbd-server
	config_foreach config_handle_share share
}

start() {
	config_read

	if [ "$SERVICE_ENABLED" = "1" ]; then
		service_start /usr/bin/nbd-server \
			--pid-file /var/run/nbd-server.pid \
			--config-file=$CONFIGFILE
	fi
}

stop() {
	service_stop /usr/bin/nbd-server
}