#!/bin/sh

# Slackware build script for Exim

# Written by Thomas Morper <thomas@beingboiled.info>
# Thanks to Thales A. Tsailas <ttsailas@enforcingit.com> and the SBo team
# for the previous version and the accompanying files.
# Thanks to Debian for the manpages.

PRGNAM=exim
VERSION=${VERSION:-4.71}
ARCH=${ARCH:-i486}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e

# Check if the exim user and group exist. If not, then bail.
if [ "$(id -g exim 2> /dev/null)" != "222" -o "$(id -u exim 2> /dev/null)" != "222" ]; then
  echo "  You must have an 'exim' user and group to run this script."
  echo "    # groupadd -g 222 exim"
  echo "    # useradd -d /var/spool/exim -g exim -s /bin/false -u 222 exim"
  exit 1
fi

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf $PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.bz2
cd $PRGNAM-$VERSION
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

cat $CWD/exim.Makefile > Local/Makefile
cat exim_monitor/EDITME > Local/eximon.conf

make \
  CFLAGS="$SLKCFLAGS -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE" \
  LIBDIRSUFFIX=$LIBDIRSUFFIX
make install DESTDIR=$PKG

find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

# Ditch the symlink and move the binary to its final destination.
rm -f $PKG/usr/sbin/exim
mv $PKG/usr/sbin/exim-$VERSION-1 $PKG/usr/sbin/exim

# Additional symlinks provide compatibility with sendmail
mkdir -p $PKG/usr/lib     # no LIBDIRSUFFIX here!
( cd $PKG/usr/lib;  ln -s /usr/sbin/exim sendmail )
( cd $PKG/usr/sbin; ln -s /usr/sbin/exim sendmail )

# Nobody should use an unedited default config.
mv $PKG/etc/exim/exim.conf $PKG/etc/exim/exim.conf.example
mv $PKG/etc/exim/aliases $PKG/etc/exim/aliases.example

# Install accompanying scripts and configs.
mkdir -p $PKG/etc/{cron.daily,logrotate.d,rc.d}
install -m 0755 $CWD/contrib/rc.exim.new    $PKG/etc/rc.d/rc.exim.new
install -m 0755 $CWD/contrib/exim.cron      $PKG/etc/cron.daily/exim.new
install -m 0644 $CWD/contrib/exim.logrotate $PKG/etc/logrotate.d/exim.new

# Prepare log- and spool-directories.
mkdir -p $PKG/var/log/exim
mkdir -p -m 0750 $PKG/var/spool/exim/
mkdir -p -m 0750 $PKG/var/spool/exim/{db,input,msglog}
chown -R exim.exim $PKG/var/{log,spool}/exim

# Install the various manpages
mkdir -p $PKG/usr/man/man8
mv doc/exim.8 $PKG/usr/man/man8/
install -m 0644 $CWD/manpages/*.8 $PKG/usr/man/man8/
find $PKG/usr/man/man8 -type f -exec gzip -9 {} \;
( cd $PKG/usr/man/man8
  ln -s exim_db.8.gz exim_dumpdb.8.gz
  ln -s exim_db.8.gz exim_fixdb.8.gz
  ln -s exim_db.8.gz exim_tidydb.8.gz
)

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a \
  ABOUT ACKNOWLEDGMENTS CHANGES LICENCE NOTICE README* doc \
  $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc
cat $CWD/doinst.sh > $PKG/install/doinst.sh

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}