#!/bin/sh
# Set initial variables:
CWD=$(pwd)
TMP=${TMP:-/tmp}
PKG=$TMP/package-dhcp

VERSION=3.0.5
ARCH=${ARCH:-i486}
BUILD=${BUILD:-2}

if [ "$ARCH" = "i386" ]; then
  SLKCFLAGS="-O2 -march=i386 -mcpu=i686"
elif [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
elif [ "$ARCH" = "s390" ]; then
  SLKCFLAGS="-O2"
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2"
fi

if [ ! -d $TMP ]; then
  mkdir -p $TMP # location to build the source
fi
rm -rf $PKG
mkdir -p $PKG

cd $TMP
rm -rf dhcp-$VERSION
tar xzvf $CWD/dhcp-$VERSION.tar.gz
cd dhcp-$VERSION || exit 1

zcat $CWD/dhcp-3.0.5-majminverfix.diff.gz | patch -p1 || exit 1

./configure
make DEBUG="$SLKCFLAGS" || exit 1
make DEBUG="$SLKCFLAGS" install DESTDIR=$PKG
mkdir -p $PKG/var/state/dhcp
touch $PKG/var/state/dhcp/dhcpd.leases.new
rm -rf $PKG/usr/local
mkdir -p $PKG/usr/doc/dhcp-$VERSION
cp -a \
  LICENSE README RELNOTES \
  $PKG/usr/doc/dhcp-$VERSION
mkdir -p $PKG/usr/doc/dhcp-$VERSION/examples
cp -a client/dhclient.conf server/dhcpd.conf \
  $PKG/usr/doc/dhcp-$VERSION/examples
chown -R root:root $PKG/usr/doc/dhcp-$VERSION
cat << EOF > $PKG/etc/dhcpd.conf.new
# dhcpd.conf
#
# Configuration file for ISC dhcpd (see 'man dhcpd.conf')
#
EOF
cat << EOF > $PKG/etc/dhclient.conf.new
# dhclient.conf
#
# Configuration file for ISC dhclient (see 'man dhclient.conf')
#
EOF
cat client/scripts/linux > $PKG/sbin/dhclient-script
chmod 700 $PKG/sbin/dhclient-script
gzip -9 $PKG/usr/man/man?/*
find $PKG/usr/man -type f -exec chmod 644 {} \;

( cd $PKG
  find . | xargs file | grep "executable" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
  find . | xargs file | grep "shared object" | grep ELF | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null
)

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat << EOF > $PKG/install/doinst.sh
#!/bin/sh
config() {
  NEW="\$1"
  OLD="\$(dirname \$NEW)/\$(basename \$NEW .new)"
  # If there's no config file by that name, mv it over:
  if [ ! -r \$OLD ]; then
    mv \$NEW \$OLD
  elif [ "\$(cat \$OLD | md5sum)" = "\$(cat \$NEW | md5sum)" ]; then # toss the redundant copy
    rm \$NEW
  fi
  # Otherwise, we leave the .new copy for the admin to consider...
}
config etc/dhcpd.conf.new
config etc/dhclient.conf.new
config var/state/dhcp/dhcpd.leases.new
rm -f var/state/dhcp/dhcpd.leases.new
EOF

# Build the package:
cd $PKG
makepkg -l y -c n $TMP/dhcp-$VERSION-$ARCH-$BUILD.tgz

# Clean up the extra stuff:
if [ "$1" = "--cleanup" ]; then
 rm -rf $TMP/dhcp-$VERSION
 rm -rf $PKG
fi