#!/bin/sh
PATH=/bin:/usr/bin:/sbin:/usr/sbin

if [ $2 ]; then
INTERFACE_NAME="$2"
else
INTERFACE_NAME="p2p0"
fi
INTERFACE_PREFIX="p2p"
TARGET="TM1"
DEFAULT_IP="192.168.49.1"
DEFAULT_NET="192.168.49.1/24"
DEFAULT_BRD="192.168.49.255"

if [ ! -f @SBIN_DIR@/ip ]; then
	interface=`@SBIN_DIR@/ifconfig -a|/bin/grep ${INTERFACE_NAME}|@BIN_DIR@/cut -d":" -f1`
else
	interface=`@SBIN_DIR@/ip link|/bin/grep ${INTERFACE_NAME}|@BIN_DIR@/cut -d":" -f2`
fi
echo "Target is ${TARGET} and interface ${INTERFACE_PREFIX}: ${interface}."

start_dhcp_server()
{
	if [ "X${interface}" == "X" ]; then
		echo "interface(${INTERFACE_PREFIX}) is not up"
		return 0
	fi

	/bin/rm /@TZ_SYS_VAR@/lib/misc/dhcpd.leases
	/bin/touch @TZ_SYS_VAR@/lib/misc/dhcpd.leases
	if [ ! -f @SBIN_DIR@/ip ]; then
		@SBIN_DIR@/ifconfig ${interface} ${DEFAULT_IP} up
	else
		@SBIN_DIR@/ip addr add ${DEFAULT_NET} brd ${DEFAULT_BRD} dev ${interface}
	fi
	@SBIN_DIR@/dhcpd -S -i ${interface} @TZ_SYS_RO_ETC@/wifi-direct/dhcpd.conf -f &

	route=`/bin/cat @TZ_SYS_RO_ETC@/wifi-direct/dhcpd.conf | /bin/grep router | /bin/awk '{print $3}'`
	if [ -z $route ]; then
		route="192.168.49.1"
	fi
	subnet=`/bin/cat @TZ_SYS_RO_ETC@/wifi-direct/dhcpd.conf | /bin/grep subnet | /bin/awk '{print $3}'`

	if [ -z $subnet ]; then
		subnet="255.255.255.0"
	fi
}

start_dhcp_client()
{
	if [ "X${interface}" == "X" ]; then
		echo "interface(${INTERFACE_PREFIX}) is not up"
		return 0
	fi

	@BIN_DIR@/vconftool set -t string memory/private/wifi_direct_manager/dhcpc_server_ip "0.0.0.0" -f
	@BIN_DIR@/dhcp -S -i $interface -s @TZ_SYS_RO_ETC@/wifi-direct/udhcp_script.non-autoip &
}


clean_vconfs()
{
	@BIN_DIR@/vconftool set -t string memory/private/wifi_direct_manager/p2p_ifname "" -f
	@BIN_DIR@/vconftool set -t string memory/private/wifi_direct_manager/p2p_subnet_mask "" -f
	@BIN_DIR@/vconftool set -t string memory/private/wifi_direct_manager/p2p_gateway "" -f
	@BIN_DIR@/vconftool set -t string memory/private/wifi_direct_manager/p2p_local_ip "" -f
	@BIN_DIR@/vconftool set -t string memory/private/wifi_direct_manager/dhcpc_server_ip "0.0.0.0" -f
}

stop_dhcp()
{
	@BIN_DIR@/pkill -x dhcp
	@BIN_DIR@/pkill -x dhcpd
	if [ "X${interface}" == "X" ]; then
		echo "interface(${INTERFACE_PREFIX}) is not up"
		return 0
	fi

	if [ ! -f @SBIN_DIR@/ip ]; then
		@SBIN_DIR@/ifconfig ${interface} "0.0.0.0"
	else
		@SBIN_DIR@/ip addr del ${local_ip_net} dev ${interface}
	fi
}

is_running()
{
	program=$1
	run=`/bin/ps -eo comm|/bin/grep ${program}`
	if [ "X${run}" == "X" ]; then
		echo "${program} is not running"
	else
		echo "${program} is already running"
	fi
}

status_dhcp()
{
	is_running @BIN_DIR@/dhcp
	is_running @SBIN_DIR@/dhcpd
}


case $1 in
"server")
stop_dhcp
start_dhcp_server
;;
"client")
clean_vconfs
stop_dhcp
start_dhcp_client
;;
"stop")
clean_vconfs
stop_dhcp
;;
"status")
status_dhcp
;;
*)
/bin/echo wifi-direct-dhcp.sh [server] [client] [stop] [status]
exit 1
;;
esac