#!/bin/bash

# <niro@magellan-linux.de>

#%rlevels: 7:s 0:k 6:k
#%start: 41
#%stop: 01

#deps
#%needs:
#%before:
#%after:

# $Header: /home/cvsd/alx-cvs/alx-src/alxconfig-ng/init.d/alxsettings,v 1.6 2005-03-09 00:25:57 niro Exp $

# checks first if the client was already configured and if it has an valid serial
# if not it runs the autoconfiguration script
# these settings will be used for client setup
#
# if client was valid it first will check if his settings against the server
# if no changes are at server side they will be kept, if yes the get updated. 
# the server settings has higher priority.

source /etc/sysconfig/rc
source $rc_functions

#mysql settings
source /etc/alxconfig-ng/config.rc
source /usr/lib/alxconfig-ng/functions/mysqlfunctions
source /usr/lib/alxconfig-ng/functions/serial_functions
source /usr/lib/alxconfig-ng/functions/config_network
source /usr/lib/alxconfig-ng/functions/config_printers
source /usr/lib/alxconfig-ng/functions/config_x11

#check if mysql is available
[ -x /usr/bin/mysql ] && MYSQL_ALX=true

#other needed vars
ALX_HW_DETECT=false

#unset vars which may kill us
unset ALX_SERIAL ALX_STATE


#setup needed directories
[ ! -d /etc/alxconfig-ng/state ] && install -d /etc/alxconfig-ng/state


validate_sessions(){

	local x i all LOCAL_SESSIONS DB_SESSIONS SETTINGSPATH count
	
	#all arrays:
	# ->  session1 session2 ... sessionN
	
	
	#no LOCAL_SESSIONS here, needs bubblesort
	
	#get settings from database
	all=$(mysql_command ${SQL_USER} ${SQL_PASS} ${SQL_HOST} ${SQL_DB} \
			"select session from cfg_sessions where serial='${ALX_SERIAL}'")
	
	#split'em up and put in an array (only if $all not zero)
	declare -i i=0
	if [ -n "${all}" ]
	then
		for x in ${all}
		do
			DB_SESSIONS[${i}]=${x}
			((i++))
		done
		count=${i}
	else
		count=0
	fi
	
	## no compare here, can only done with bubblesort or s.th like that
	# shows only the new sessions
	declare -i i=0
	#count=${#DB_SESSIONS[*]} #---> not working gets always 1, why ?
	
	echo "Number of new sessions: ${count}"
	for ((i=0; i < count; i++))
	do
		echo "${i} - ${DB_SESSIONS[${i}]}"
	done
	
	#update local configs
	SETTINGSPATH=${SETTINGS_TEMPLATE}/menu
	declare -i i=0
	
	#count=${#DB_SESSIONS[*]}
	
	if [ ${count} -gt 0 ]
	then
		#create directory if not exist
		[ ! -d ${SETTINGSPATH}/sessions ] && install -d ${SETTINGSPATH}/sessions
		
		#delete old sessions
		echo -n > ${SETTINGSPATH}/sessions/sessions
		
		for ((i=0; i < count; i++))
		do
			echo "${DB_SESSIONS[${i}]}" >> ${SETTINGSPATH}/sessions/sessions
		done
		
		#set update flag
		ALX_SESSION_SETUP=true
	fi
}


update_system_settings(){
	echo -e ${COLMAGENTA}"Checking system setup ..."${COLDEFAULT}

	# imports network settings from db
	config_networking

	# imports x11 settings from db
	config_x11

	#echo
	#echo "sessions"
	#validate_sessions
	#echo

	# imports printer settings from db
	config_printing
}

get_system_serial(){

	local CUR_IP CUR_MAC CUR_MTIME

	#check if serial file exists
	if [ -f /etc/alxconfig-ng/serial ]
	then
		source /etc/alxconfig-ng/serial

		#start preliminary networking (dhcp)
		preliminary_network start

		CUR_IP=$(/sbin/ifconfig eth0 | sed -n '/addr:/s/ [^r]*..//gp')
		CUR_MAC=$(/sbin/ifconfig eth0 | grep HWaddr | cut -d ' ' -f11)
		CUR_MTIME=$(date +%s)

		echo -e ${COLOREDSTAR} "Trying to validate my serial ..."

		#nice serial output
		$CURS_UP
		$SET_WCOL
		echo "[ SN: ${ALX_SERIAL} ]"

		if validate_serial "${ALX_SERIAL}" "${ALX_REG_DATE}" "${CUR_MAC}"
		then
			ALX_STATE="ok"
		else
			ALX_STATE="invalid serial"
		fi

	else
		#run hardware detection
		echo
		echo -e ${COLMAGENTA}"Preparing system for first boot"${COLDEFAULT}
		ALX_HW_DETECT=true
		/etc/init.d/hwdetect start

		#set hostname to alx_default_hostname
		[ -z "${ALX_DEFAULT_HOSTNAME}" ] && ALX_DEFAULT_HOSTNAME=magellan-alx
		HOSTNAME="${ALX_DEFAULT_HOSTNAME}"

		#update the hostname on the system for sure
		echo "${HOSTNAME}" > /etc/hostname

		#start preliminary networking (dhcp)
		preliminary_network start

		CUR_IP=$(/sbin/ifconfig eth0 | sed -n '/addr:/s/ [^r]*..//gp')
		CUR_MAC=$(/sbin/ifconfig eth0 | grep HWaddr | cut -d ' ' -f11)
		CUR_MTIME=$(date +%s)

		echo -e ${COLOREDSTAR} "Trying to get new serial ..."

		#request new serial
		#ALX_REG_DATE="$(date +%F)"

		#we're using the mtime now (better for vaildating the serial)
		mysql_command ${SQL_USER} ${SQL_PASS} ${SQL_HOST} ${SQL_DB} \
			"insert into client_serials(
				mtime,
				mac
			) 
			values(
				'${CUR_MTIME}',
				'${CUR_MAC}'
			);"

		#then validate and retrieve serial

		### warning must be changed that only the LAST ID will be fetched,  ###
		### or you get error if the computer name and date are the same     ###
		### you have more than one serial number then                       ###

		#select highest id only (added max)
		ALX_SERIAL=$(mysql_command ${SQL_USER} ${SQL_PASS} ${SQL_HOST} ${SQL_DB} \
			"select max(serial) from client_serials where mtime='${CUR_MTIME}' and mac='${CUR_MAC}'")

		if [ "${ALX_SERIAL}" != NULL ]
		then
			#nice serial output
			$CURS_UP
			$SET_WCOL
			echo "[ SN: ${ALX_SERIAL} ]"

			#set ALX_STATE to ok so everybody that everything was ok
			ALX_STATE=ok

			echo "ALX_SERIAL=${ALX_SERIAL}" > /etc/alxconfig-ng/serial
			echo "ALX_REG_DATE=${CUR_MTIME}" >> /etc/alxconfig-ng/serial

			evaluate_retval
		else
			#print false (works only if this is the first statement here)
			evaluate_retval

			#set ALX_STATE to error so everybody sees there was an error
			ALX_STATE=error

			#show an error that no new serial was found
			#nice serial output
			$CURS_UP
			$SET_WCOL
			echo -e "[ SN: ${COLRED}None, 0${COLDEFAULT} ]"
		fi
	fi

	#write current state to temp file
	echo "ALX_STATE=${ALX_STATE}" > /etc/alxconfig-ng/state/state
}


check_is_configured() {
	if [ -f /etc/alxconfig-ng/state/configured ]
	then
		export ALX_CONFIGURED=true
	else
		export ALX_CONFIGURED=false
	fi
}


# imports current settings to the database resolved by the hardware detection
import_settings_to_db() {
	#note: networking is always 'dhcp' if hw was autodetected
	#note: default_domain/hostname is set in config.rc

	#to be safe, we do some sanity checks
	[ -z "${ALX_DEFAULT_DOMAIN}" ] && ALX_DEFAULT_DOMAIN=localdomain
	[ -z "${ALX_DEFAULT_HOSTNAME}" ] && ALX_DEFAULT_HOSTNAME=magellan-alx

	#vars used by hwdetect
	local NETCARD_FULLNAME NETCARD_DRIVER MOUSE_FULLNAME MOUSE_DEVICE SOUND_FULLNAME
	local SOUND_DRIVER XSERVER XMODULE XDESC FLOPPY_FULLNAME FLOPPY_DEVICE FLOPPY_DRIVER
	local MOUSETYPE XMOUSETYPE FULLNAME DEVICE

	#get setting from hwdetect
	source /etc/sysconfig/hwsetup/knoppix
	source /etc/sysconfig/hwsetup/mouse

	echo
	echo -e ${COLMAGENTA}"Importing detected settings to database"${COLDEFAULT}

	#network
	echo -e "      Network settings ..."
	mysql_command ${SQL_USER} ${SQL_PASS} ${SQL_HOST} ${SQL_DB} \
		"insert into cfg_network(
			hostname,
			serial,
			module,
			domain,
			networking
		)
		values(
			'${ALX_DEFAULT_HOSTNAME}',
			'${ALX_SERIAL}',
			'${NETCARD_DRIVER}',
			'${ALX_DEFAULT_DOMAIN}',
			'dhcp'
		);"
	evaluate_retval

	#xserver
	echo -e "      Graphic settings ..."
	#xserver general
	( mysql_command ${SQL_USER} ${SQL_PASS} ${SQL_HOST} ${SQL_DB} \
		"insert into cfg_graphic(
			serial,
			module,
			resolution,
			depth,
			monitorid
		)
		values(
			'${ALX_SERIAL}',
			'${XMODULE}',
			'1024x768',
			'16',
			'0'
		);";

	# input
	  mysql_command ${SQL_USER} ${SQL_PASS} ${SQL_HOST} ${SQL_DB} \
			"insert into cfg_input(serial,mouse) values('${ALX_SERIAL}','${XMOUSETYPE}');";)
	evaluate_retval
}

# imports current settings to the local system resolved by the hardware detection
# we only need the network settings 
import_settings_local(){
	#note: networking is always 'dhcp' if hw was autodetected
	#note: default_domain/hostname is set in config.rc

	#to be safe, we do some sanity checks
	[ -z "${ALX_DEFAULT_DOMAIN}" ] && ALX_DEFAULT_DOMAIN=localdomain
	[ -z "${ALX_DEFAULT_HOSTNAME}" ] && ALX_DEFAULT_HOSTNAME=magellan-alx

	#vars used by hwdetect
	local NETCARD_FULLNAME NETCARD_DRIVER MOUSE_FULLNAME MOUSE_DEVICE SOUND_FULLNAME
	local SOUND_DRIVER XSERVER XMODULE XDESC FLOPPY_FULLNAME FLOPPY_DEVICE FLOPPY_DRIVER
	local MOUSETYPE XMOUSETYPE FULLNAME DEVICE

	#get setting from hwdetect
	source /etc/sysconfig/hwsetup/knoppix

	echo
	echo -e ${COLMAGENTA}"Importing detected settings to local system"${COLDEFAULT}

	[ ! -d ${SETTINGSPATH} ] && install -d ${SETTINGSPATH}
	echo "${NETCARD_DRIVER}" > ${SETTINGSPATH}/modules
	evaluate_retval

	#set system state to 'already configured'
	touch /etc/alxconfig-ng/state/configured
}

#start|stop
preliminary_network(){
	local module

	if [ -f /etc/alxconfig-ng/state/configured ]
	then
		#get module name
		module=$(cat ${SETTINGSPATH}/modules)
		modprobe ${module}
	else
		#vars used by hwdetect
		local NETCARD_FULLNAME NETCARD_DRIVER MOUSE_FULLNAME MOUSE_DEVICE SOUND_FULLNAME
		local SOUND_DRIVER XSERVER XMODULE XDESC FLOPPY_FULLNAME FLOPPY_DEVICE FLOPPY_DRIVER

		#get setting from hwdetect
		source /etc/sysconfig/hwsetup/knoppix
		modprobe ${NETCARD_DRIVER}
	fi

	case $1 in
		start)
			# keeping like always safe:
			# no network should be startet here,
			# so we can delete all pid files if one exists
			if ps -A|grep dhcpcd > /dev/null
			then
				echo -e ${COLMAGENTA}"Forcing network down"${COLDEFAULT}
				dhcpcd -k
				sleep 1
			else
				rm -f /var/run/dhcpcd-eth?.pid
			fi

			echo -e ${COLMAGENTA}"Starting preliminary network ... "${COLDEFAULT}
			dhcpcd &> /dev/null

			# aka_fix ########################################
			#ifconfig eth0 128.20.222.222 netmask 255.255.0.0 up
			#route del default gw 128.20.50.13 &> /dev/null
			#route add default gw 128.20.50.21 &> /dev/null
			#echo "nameserver 128.20.50.21" > /etc/resolv.conf
			##################################################

			evaluate_retval
			;;

		stop)
			echo -e ${COLMAGENTA}"Stopping preliminary network ... "${COLDEFAULT}
			ifconfig eth0 down
			if ps -A|grep dhcpcd > /dev/null
			then
				dhcpcd -z  &> /dev/null
			fi
			evaluate_retval
			;;

		*)
			echo "Usage: preliminary_network {start|stop}"
			;;
	esac
}

case $1 in
	start)
		#retrieve or validate current serial
		get_system_serial
		if [ "${ALX_HW_DETECT}" == "true" ]
		then
			import_settings_to_db
			import_settings_local
		fi
		
		#now setup system configuration
		#alx_setup_or_whatever_it_will_be_called()
		[ "${ALX_HW_DETECT}" == "false" ] && update_system_settings

		#stop at last the preliminary networking (dhcp)
		preliminary_network stop
		;;
	
	stop)
		#unset_alx_connected #--> now in alxsetstate-rc6
		# ! important !: del systemstate
		[ -f /etc/alxconfig-ng/state/state ] && rm /etc/alxconfig-ng/state/state
		sleep 0.1
		;;
	*)
		echo "Usage: $0 {start|stop} ..."
		;;
esac