~ago/lupin/gutsy

#! /bin/sh

#exec > /find_preseed.log 2>&1

set -x

PREREQ=""

DESCRIPTION="Loading preseed file..."

. /scripts/casper-functions

prereqs ()

{

	echo "$PREREQ"

}

case $1 in

# get pre-requisites

    prereqs)

        prereqs

        exit 0

        ;;

esac

. /scripts/lupin-helpers

PRESEED="${rootmnt}/preseed.cfg"

find_preseed(){

    preseed_path=

    for x in $(cat /proc/cmdline); do

        case ${x} in

            find_preseed=*)

                preseed_path=${x#find_preseed=}

                ;;

            file=)

                PRESEED=${x#file=}

                ;;

            preseed/file=)

                PRESEED=${x#preseed/file=}

                ;;

        esac

    done

    find_path "${preseed_path}" || return 1

    return 0

}

fix_preseed(){

    #TBD make sure CR LF can be handled safely

    #TBD what follows tries to find Linux devices if preseed is generated from another OS

    #a proper fix should be to find reliable device mappings in the preseed-generator

    #Find Linux device of User Folder for importing settings by m-a

    user_folder=$(grep "#UserFolder" ${PRESEED})

    user_folder=${user_folder#'#UserFolder='}

    dev=${PRESEED_DEVICE}

    if find_path  "${user_folder}"; then

        dev="${FOUNDDEV}"

    fi    

    dev=${dev#/dev/}

    sed -i "s/MADEVICE/${dev}/g" ${PRESEED}

    #Find Linux device of loopinstall folder

    loopinstall_folder=$(grep "#LoopInstallFolder" ${PRESEED})

    loopinstall_folder=${loopinstall_folder#'#LoopInstallFolder='}

    dev=${PRESEED_DEVICE}

    if find_path  "${loopinstall_folder}"; then

        dev="${FOUNDDEV}"

    fi

    check_loopinstall_folder ${dev} ${loopinstall_folder} 

    disk=${dev%[0-9]} #TBD broken if n>9

    partn=${dev#${disk}} 

    disk=$(echo "${disk}"|sed 's/\//\\\//g')

    sed -i "s/LIDISK/${disk}/g" ${PRESEED}

    sed -i "s/LIPARTITION/${partn}/g" ${PRESEED}

}

check_loopinstall_folder(){

    dev=${1}

    loopinstall_folder=${2}

    #TBD Check whether LOOPINSTALL_FOLDER is vergin or not

    #Can we install on top of an existing installation?

    #Shall we overwrite? ignore and simply boot the live CD or panic?

    #Do we do the check here or later on?

}

if find_preseed; then

    PRESEED_DEVICE="${FOUNDDEV}"

    PRESEED_FOLDER=$(dirname "${FOUNDPATH}")

    #copy over preseed 

    mkdir -p $(dirname "${PRESEED}")

    cp "${FOUNDPATH}" "${PRESEED}"

    #some temporary hooks for testing pourposes

    #copy over early_command and late_command scripts

    if [ -e "${PRESEED_FOLDER}/late_command.sh" ]; then

        cp "${PRESEED_FOLDER}/late_command.sh" "${rootmnt}/sbin"

    fi

    if [ -e "${PRESEED_FOLDER}/early_command.sh" ]; then

        cp "${PRESEED_FOLDER}/early_command.sh" "${rootmnt}/sbin"

    fi

    #make local packages available during installation

    mkdir -p "${rootmnt}/packages"

    cp "${PRESEED_FOLDER}/*.deb" "${rootmnt}/packages" 2> /dev/null

    #fix parameters that cannot be set from a non-linux OS

    fix_preseed    

fi