#!/bin/sh

# Do not forget :
# - http://www.openbsd.org/donations.html
# - http://www.openbsd.org/items.html
# - http://www.openbsd.org/tshirts.html
#
# Based on "How to make an OpenBSD bootable install CD"
# located at http://www.pantz.org/os/openbsd/makingaopenbsdcd.shtml

echo "$1" | grep -E '^(snapshots|stable|[1-9][0-9]*.[0-9])$' > /dev/null

if [ $? -ne 0 ];
then
  echo "Bad version number"
  exit 1;
fi

if [ $1 = "stable" ];
then
  vernum=$(expr \( $(date +"%Y") \* 2 - 3973 \))
  month=$(date +"%m")
  if [ $month -lt 5 ];
  then
    vernum=$(expr $vernum - 1)
  elif [ $month -gt 10 ];
  then
    vernum=$(expr $vernum + 1)
  fi
  vernum=$(expr $vernum / 10).$(expr $vernum % 10)
  echo "Stable should be v. $vernum"
else
  vernum=$1
fi

#default_src_host=ftp.dkuug.dk
default_src_host=openbsd.informatik.uni-erlangen.de
#default_src_host="ftp://ftp.crans.org"
#default_src_path="ftp://ftp.crans.org/pub/OpenBSD"

if [ -z "$2" ];
then
  echo "No source supplied using default $default_src_host"
  src_host=$default_src_host
else
  src_host=$2
fi

mkdir -p OpenBSD/$vernum/i386
cd OpenBSD/$vernum/i386

ftp_path=/pub/OpenBSD/$vernum/i386
packages="MD5"

if [ "$vernum" = "snapshots" ];
then
  ncftpget $src_host . $ftp_path/MD5
  undotted_vernum=`sed -e '/^MD5 (base/!d;s/\(^MD5 (base\)\([0-9]*\)\(.*\)$/\2/' MD5`
  packages=""
else
  undotted_vernum=$(echo $vernum | sed -e 's/\.//')
fi

packages="$packages base$undotted_vernum.tgz"
packages="$packages bsd"
packages="$packages bsd.rd"
packages="$packages cdrom$undotted_vernum.fs"
packages="$packages comp$undotted_vernum.tgz"
packages="$packages etc$undotted_vernum.tgz"
packages="$packages floppy$undotted_vernum.fs"
packages="$packages game$undotted_vernum.tgz"
packages="$packages man$undotted_vernum.tgz"
packages="$packages misc$undotted_vernum.tgz"
packages="$packages xbase$undotted_vernum.tgz"
packages="$packages xetc$undotted_vernum.tgz"
packages="$packages xfont$undotted_vernum.tgz"
packages="$packages xserv$undotted_vernum.tgz"
packages="$packages xshare$undotted_vernum.tgz"
packages="$packages ../ports.tar.gz"
if [ $vernum != "snapshots" ];
then
  packages="$packages ../src.tar.gz"
  packages="$packages ../sys.tar.gz"
fi

package_list=''
for package in $packages
do
  package_list="$package_list $ftp_path/$package"
done
ncftpget $src_host . $package_list

if [ -f "src.tar.gz" ];
then
  mv src.tar.gz ..
fi

if [ -f "sys.tar.gz" ];
then
  mv sys.tar.gz ..
fi

cd ../../

mkisofs -vrTJV "OpenBSD$undotted_vernum" \
  -b $vernum/i386/cdrom$undotted_vernum.fs \
  -c boot.catalog \
  -o OpenBSD$undotted_vernum.iso \
  ../OpenBSD/