#!/bin/bash

# checks if GRUB1 boot configuration is valid (not compatible with GRUB2!)
# intended for my headless server
#
# source by .bashrc would be possible but not recommended as you'd be spawning a lot of processes.


BASEDIR=/boot #no trailing slash

oldIFS=$IFS
IFS=" "

# TODO: Check if disk path is root
# TODO: Check if kernel file's uname has modules installed

if [ ! -f ${BASEDIR}/grub/menu.lst ]; then
    echo "BOOTCHECK: Menu.lst isn't available! Is /boot mounted?"
    exit 1
else
    KERNEL=(`egrep '^kernel.*' ${BASEDIR}/grub/menu.lst`)
    INITRD=(`egrep '^initrd.*' ${BASEDIR}/grub/menu.lst`)

    KERNELFILE="${BASEDIR}${KERNEL[1]}"
    DISKPATH=`echo ${KERNEL[2]} | cut -c6-`
    INITRDFILE="${BASEDIR}${INITRD[1]}"

    if [ ! -e "$KERNELFILE" ]; then
        echo "BOOTCHECK: $KERNELFILE does not exist" # kernel file
        exit 1
    elif [ ! -e $DISKPATH ]; then
        echo "BOOTCHECK: $DISKPATH does not exist!!!" # disk path
        exit 1
    elif [ ! -e $INITRDFILE ]; then
        echo "BOOTCHECK: $INITRDFILE does not exist" # initrd file
        exit 1
    fi
fi

IFS=$oldIFS

exit 0