#!/bin/sh

set MACHINE=""

if [ -r @appconfdir@/defaults ]; then
	# this provides MACHINE, SUPPORTED_MACHINES and DEFAULT_MACHINE_SELECTION variables
	. @appconfdir@/defaults
fi

OLDMACHINE="${MACHINE}"

read KERNEL_COMMAND_LINE < /proc/cmdline
for i in $KERNEL_COMMAND_LINE; do
        case $i in
        target_machine=*)
		MACHINE="`echo $i | sed "s/^target_machine=//"`"
                ;;
        esac
done

if [ "${MACHINE}" = "" ]; then
	# do not change anything on the target image
	exit 0
fi

# Check weather the specified machine is a supported one
VALID_MACHINE=0
if [ "${MACHINE}" != "ask" ]; then
	for m in ${SUPPORTED_MACHINES}; do
		if ( [ "${m}" = "${MACHINE}" ] && [ -r "@appconfdir@/config/${MACHINE}/${MACHINE}.vars" ] ); then
			VALID_MACHINE=1
		fi
	done

	if ( [ "${MACHINE}" = "detect" ] || [ "${MACHINE}" = "detect-ask" ] || [ "${VALID_MACHINE}" != "1" ] ); then
		. @appconfdir@/scripts/detect-machine
	fi
fi

for m in ${SUPPORTED_MACHINES}; do
	if ( [ "${m}" = "${MACHINE}" ] && [ -r "@appconfdir@/config/${MACHINE}/${MACHINE}.vars" ] ); then
		VALID_MACHINE=1
	fi
done

if ( [ "${MACHINE}" = "ask" ] || [ "${MACHINE}" = "detect-ask" ] || [ "${VALID_MACHINE}" != "1" ] ); then
	. @appconfdir@/scripts/machine-selection-menu
fi

if [ -z "${MACHINE}" ]; then
	echo "Target machine is not set. Previous machine configuration is preserved."
	exit
fi

if [ -r "@appconfdir@/config/${MACHINE}/${MACHINE}.vars" ]; then
	. @appconfdir@/config/${MACHINE}/${MACHINE}.vars
fi

if [ "$OLDMACHINE" != "$MACHINE" ]; then
	rm -f @sysconfdir@/formfactor/machconfig
	if [ -f "@appconfdir@/config/${MACHINE}/${FORMFACTOR_FILE}" ]; then
		 cp -f @appconfdir@/config/${MACHINE}/${FORMFACTOR_FILE} @sysconfdir@/formfactor/machconfig
	fi

	if [ -w @sysconfdir@/pulse/default.pa ]; then
		sed "/^set-default-sink.*$/d" -i @sysconfdir@/pulse/default.pa
		if [ -n "${PULSEAUDIO_DEFAULT_SINK}" ]; then
			echo "set-default-sink ${PULSEAUDIO_DEFAULT_SINK}" >> @sysconfdir@/pulse/default.pa
		fi
		sed "/^set-default-source.*$/d" -i @sysconfdir@/pulse/default.pa
		if [ -n "${PULSEAUDIO_DEFAULT_SOURCE}" ]; then
			echo "set-default-source ${PULSEAUDIO_DEFAULT_SOURCE}" >> @sysconfdir@/pulse/default.pa
		fi
	fi

	rm -f @sysconfdir@/asound.conf
	if [ -f "@appconfdir@/config/${MACHINE}/${ALSA_CONFIG_FILE}" ]; then
		 cp -f @appconfdir@/config/${MACHINE}/${ALSA_CONFIG_FILE} @sysconfdir@/asound.conf
	fi

	rm -f /var/lib/alsa/asound.state
	if [ -f "@appconfdir@/config/${MACHINE}/${ALSA_STATE_FILE}" ]; then
		cp -f @appconfdir@/config/${MACHINE}/${ALSA_STATE_FILE} /var/lib/alsa/asound.state
	fi

	rm -f @sysconfdir@/X11/xorg.conf
	if [ -f "@appconfdir@/config/${MACHINE}/${XORG_CONFIG_FILE}" ]; then
		cp -f @appconfdir@/config/${MACHINE}/${XORG_CONFIG_FILE} @sysconfdir@/X11/xorg.conf
	fi

	rm -f @sysconfdir@/network/interfaces
	if [ -f "@appconfdir@/config/${MACHINE}/${NETWORK_INTERFACES_FILE}" ]; then
		cp -f @appconfdir@/config/${MACHINE}/${NETWORK_INTERFACES_FILE} @sysconfdir@/network/interfaces
	fi

	rm -f @sysconfdir@/pointercal
	if [ -f "@appconfdir@/config/${MACHINE}/${POINTERCAL_FILE}" ]; then
		cp -f @appconfdir@/config/${MACHINE}/${POINTERCAL_FILE} @sysconfdir@/pointercal
	fi

	rm -f @sysconfdir@/pointercal.xinput
	if [ -f "@appconfdir@/config/${MACHINE}/${XINPUT_POINTERCAL_FILE}" ]; then
		cp -f @appconfdir@/config/${MACHINE}/${XINPUT_POINTERCAL_FILE} @sysconfdir@/pointercal.xinput
	fi

	# Autoload kernel modules
	rm -f @sysconfdir@/modules-load.d/autoload.conf
	for mod in ${AUTOLOAD_KERNEL_MODULES}; do
		echo ${mod} >> @sysconfdir@/modules-load.d/autoload.conf
	done

	# Prohibit undesired kernel modules
	rm -f @sysconfdir@/modprobe.d/prohibit.conf
	for mod in ${PROHIBIT_KERNEL_MODULES}; do
		echo blacklist ${mod} >> @sysconfdir@/modprobe.d/prohibit.conf
	done

	# kernel boot parameters
	EXTRA_KERNEL_PARAMETERS_SED=`echo " :mst-begin ${EXTRA_KERNEL_PARAMETERS} mst-end: " | sed 's#/#\\/#g'`
	if [ -w /media/realroot/syslinux.cfg ]; then
		sed "s/ :mst-begin .* mst-end: / /" -i /media/realroot/syslinux.cfg
		if [ -n "${EXTRA_KERNEL_PARAMETERS}" ]; then
			sed "/^APPEND/{s/$/${EXTRA_KERNEL_PARAMETERS_SED}/}" -i /media/realroot/syslinux.cfg
		fi
	fi
	if [ -w /media/realroot/EFI/BOOT/grub.cfg ]; then
		sed "s/ mst-begin .* mst-end / /" -i /media/realroot/EFI/BOOT/grub.cfg
		if [ -n "${EXTRA_KERNEL_PARAMETERS}" ]; then
			sed "/^linux /{s/$/${EXTRA_KERNEL_PARAMETERS_SED}/}" -i /media/realroot/EFI/BOOT/grub.cfg
		fi
	fi

	# syslinux serial port config
	if [ -w /media/realroot/syslinux.cfg ]; then
		sed "/^serial.*$/d" -i /media/realroot/syslinux.cfg
		sed "/^SERIAL.*$/d" -i /media/realroot/syslinux.cfg
		if [ -n "${SYSLINUX_SERIAL_CONFIG}" ]; then
			SYSLINUX_SERIAL_CONFIG_SED=`echo "${SYSLINUX_SERIAL_CONFIG}" | sed 's#/#\\/#g'`
			sed "1i${SYSLINUX_SERIAL_CONFIG_SED}" -i /media/realroot/syslinux.cfg
		fi
	fi
	
	# grub serial port config
	if [ -w /media/realroot/EFI/BOOT/grub.cfg ]; then
		sed "/^serial.*$/d" -i /media/realroot/EFI/BOOT/grub.cfg
		sed "/^SERIAL.*$/d" -i /media/realroot/EFI/BOOT/grub.cfg
		if [ -n "${GRUB_SERIAL_CONFIG}" ]; then
			GRUB_SERIAL_CONFIG_SED=`echo "${GRUB_SERIAL_CONFIG}" | sed 's#/#\\/#g'`
			sed "1i${GRUB_SERIAL_CONFIG_SED}" -i /media/realroot/EFI/BOOT/grub.cfg
		fi
	fi

	# serial console config in /etc/inittab
	SEDPATERN=`echo "^[^0-9].*:12345:respawn:@base_sbindir@/getty .*" | sed 's#/#\\\\/#g'`
	sed "/${SEDPATERN}/d" -i @sysconfdir@/inittab
	for console in ${GETTY_SERIAL_CONSOLES}; do
		gettty_params=`echo ${console} | sed s/\;/\ /g`
		label=`echo ${console} | sed -e 's/^.*;tty//' -e 's/;.*//'`
		echo "$label:12345:respawn:@base_sbindir@/getty ${gettty_params}" >> @sysconfdir@/inittab
	done

	# enable root login on serial console in /etc/securetty
	sed "/^# Machine Setup Tool Section Begin$/,/^# Machine Setup Tool Section End$/d" -i @sysconfdir@/securetty
	if [ -n "${SERIAL_CONSOLES}" ]; then
		echo "# Machine Setup Tool Section Begin" >> @sysconfdir@/securetty
		for console in ${SERIAL_CONSOLES}; do
			ttydev=`echo "$console" | sed -e 's/^.*\;//' -e 's/\;.*//'`
			echo $ttydev >> @sysconfdir@/securetty
		done
		echo "# Machine Setup Tool Section End" >> @sysconfdir@/securetty
	fi

	# Machine specific setup scripts
	for script in ${SETUP_SCRIPTS}; do
		if [ -f "@appconfdir@/config/${MACHINE}/${script}" ]; then
			. @appconfdir@/config/${MACHINE}/${script}
		else
			echo "Error: The machine specific setup script file is missing: @appconfdir@/config/${MACHINE}/${script}"
		fi
	done

	# Save the machine selection permanently
	sed "/^MACHINE=/d" -i @appconfdir@/defaults
	echo MACHINE=${MACHINE} >> @appconfdir@/defaults

	if ( [ "$OLDMACHINE" != "$MACHINE" ] && [ "${REBOOT_AFTER_SETUP}" = "yes" ] ); then
		echo
		echo The machine need to reboot for the configuration changes to take effect.
		echo
		echo -n "Do you want to stop the automatic reboot in 60 seconds [yes/no]: "
		read -t 60 REPLY
	
		# read failed
		if [ "$?" != "0" ]; then
			REPLY="yes"
		fi

		if [ "${REPLY}" = "yes" ]; then
			echo Not rebooting now. To activate all the setup changes a reboot is needed.
		else
			echo Rebooting now to activate the new machine configuration.
			reboot
		fi
	fi
fi