#!/bin/ash

getip () {
	echo "${IPINFO}" | awk -F ':' "{print \$$1}"
}
parse_ip () {
	local IPINFO=$1
	export ip="$(getip 1)"
	SERVERIP="$(getip 2)"
	export router="$(getip 3)"
	export subnet="$(getip 4)"
	# we might have an idea of the dns server via preboot
	export dns="$(getip 5)"
}

parse_ipv4 () {
	local var arg
	var="${1%%=*}"
	case "$var" in
		ip|router|dns|hostname|domain|search|if|ntpsrv|subnet) ;;
		*) return ;;
	esac
	arg="$( printf "%s" "${1#*=}" | tr -d "\`'\n\r" )"
	export "$var=${arg}"
}

# read kernel command line
DEBUG=0
SPLASH=0
read -r KCL < "/proc/cmdline"
for opts in ${KCL}; do
	case "${opts}" in
		debug=*)
			DEBUG=${opts#debug=}
			DEBUG_SHELL=set
			;;
		ipv4.*)
			parse_ipv4 "${opts#ipv4.}"
			;;
		ip=*)
			# process IP info
			parse_ip ${opts#ip=} ;;
		nfs=*)
			NFS=${opts#nfs=}
			;;
		BOOTIF=*)
			MAC="$( echo "$opts" | cut -b 11- | tr '-' ':' | tr '[A-Z]' '[a-z]' )" ;; # make mac lowercase for udev (see setup_network)
		slxsrv=*)
			SLX_KCL_SERVERS="$( echo "${opts#slxsrv=}" | tr ',' " " )" ;;
		slxbase=*)
			SLX_BASE_PATH="${opts#slxbase=}" ;;
		splash)
			SPLASH=1 ;;
		nvidia)
			GFX=nvidia ;;
		amdgpu)
			GFX=amdgpu ;;
		radeon)
			GFX=radeon ;;
		dhcpuuid)
			USE_DHCP_UUID=yes
			echo "SLX_NET_DHCP_UUID='yes'" >> "/run/config"
			;;
	esac
done

dns="${dns//,/ }"
search="${search//,/ }"
ntpsrv="${ntpsrv//,/ }"
[ -z "$MAC" ] && MAC="${if//-/:}"

# If slxsrv was not given on command line, just use the PXE server's address
[ -z "$SLX_KCL_SERVERS" ] && [ -n "$SERVERIP" ] && SLX_KCL_SERVERS="$SERVERIP"
# Reverse case
[ -z "$SERVERIP" ] && SERVERIP="${SLX_KCL_SERVERS%% *}"
# Now save to config file
echo "SLX_KCL_SERVERS='$SLX_KCL_SERVERS'" >> "${FUTURE_ROOT}/opt/openslx/config"
echo "SLX_BASE_PATH='$SLX_BASE_PATH'" >> "${FUTURE_ROOT}/opt/openslx/config"

true