#!/bin/bash

## Scriptname, version etc
app_name=centrino
app_version="0.0.1"				
app_date_start="04.02.04"
app_date_lchanged="`date -r "$0" +%d.%m.%y`"
test "$app_date_start" = "$app_date_lchanged" && app_date="$app_date_start" || app_date="$app_date_start - $app_date_lchanged"
app_title="$app_name v$app_version ($app_date) by M.Hentges (devel@hentges.net)"	

## Script configuration
need_local_tmp_dir=yes
need_global_tmp_dir=no
must_be_root=yes
tmp_dir="$HOME/.mhentges_data/$app_name"
g_tmp_dir="/etc/mhentges_data/$app_name"

## Misc VARs
def_script_version="6.00"
debug=0

## Script specific VARs


##########################################################################

function die {
	echo -e "\n\aERR: $1\n"
	exit 1	
}

function init {
	echo "$app_title"
	
	if test "$need_local_tmp_dir" = yes -a ! -e "$tmp_dir"
	then
		mkdir -p "$tmp_dir" || die "Error: [mkdir -p $tmp_dir] failed!"
	fi

	if test "$need_global_tmp_dir" = yes -a ! -e "$g_tmp_dir"
	then
		mkdir -p "$g_tmp_dir" || die "Error: [mkdir -p $g_tmp_dir] failed!"
	fi
	
	test "$must_be_root" = yes -a "$UID" != 0 && die "Only root may run this script, sorry."	
}

function parse_args {
	OLD_IFS="$IFS"; IFS=" "

	for argument in $1
	do
		case $argument in
			start)	MODE=start;;
			stop)		MODE=stop;;	
			--version|-v)	exit 0;;		
			--help|-h)	print_help
					;;
			*)		die "Unknown option <$argument>"
					;;				
		esac
	done
	IFS="$OLD_IFS"
}

function print_help {
	echo ""
	echo -e "Syntax: $(basename $0) [options]"
	echo -e "Options:"
	echo -e "	--version|-v		Version anzeigen"		
	echo -e "	--help/-h		This text"
	echo -e ""
	exit 0
}	

function start {
	
	test -z "$MODE" && die "--start / --stop"
	
	if test "$MODE" = start
	then
		
		
		tmp_1=`ifconfig eth0`
		
		if ! test -z "$tmp_1"
		then
			echo -n "Shutting down eth0..."		
			ifconfig eth0 down && echo "ok" || echo "FAILED"
		fi
		
		tmp_2=`ps ax|grep -v grep|grep dhclient`
		
		if ! test -z "$tmp_2" 
		then					
			echo -n "Stopping dhclient..."
			killall dhclient && echo "ok" || echo "FAILED"
		fi
		
		if (lsmod|grep ndiswrapper) &>/dev/null
		then
			echo -n "Unloading ndiswrapper"
			rmmod ndiswrapper && echo "ok"
		fi	
		
		if ! (lsmod|grep ndiswrapper) &>/dev/null
		then
			echo -n "Loading ndiswrapper..."
			modprobe ndiswrapper  && echo ok || die "modprobe ndiswrapper failed"
			
		fi
		
		if ! (iptables -L|grep in_wlan0) &>/dev/null
		then
			echo -n "Configuring mhfirewall for wlan0..."
			/usr/scripts/mhfirewall start wlan0
			echo "done"
		fi	
		
		test -e /etc/init.d/hostwatch && /usr/scripts/rcstop hostwatch
		
		echo "Configuring wlan0"

		dhclient wlan0 2>&1 |logger -t centrino						


	fi
	
	if test "$MODE" = stop
	then
		tmp_1=`ifconfig wlan0`
		
		if ! test -z "$tmp_1"
		then
			echo -n "Shutting down wlan0..."
			ifconfig wlan0 down  && echo ok || echo FAILED
		fi
		
		tmp_2=`ps ax|grep dhclient`
		
		if ! test -z "$tmp_2"
		then
			echo -n "Stopping dhclient..."
			killall dhclient && echo ok || echo FAILED	
		fi
		
		if (iptables -L|grep in_wlan0) &>/dev/null
		then
			echo -n "Removing mhfirewall for wlan0..."
			/usr/scripts/mhfirewall stop wlan0
			echo "done"
		fi	
		
		if (lsmod|grep ndiswrapper) &>/dev/null
		then
			echo -n "Unloading ndiswrapper"
			rmmod ndiswrapper && echo "ok"
		fi	
		
		
		
		echo "Configuring eth0"
		ifconfig eth0 up
		dhclient eth0 2>&1 |logger -t centrino	
		
		test -e /etc/init.d/hostwatch && /usr/scripts/rcstart hostwatch
	fi	
	
}

init
parse_args "$*"

start