#!/bin/sh

# Slackware build script for sanlock

# Copyright 2019  Mario Preksavec, Zagreb, Croatia
# Modified by Rafael Tavares <mdrafaeltavares@gmail.com> for gfs (2021)
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

PRGNAM=$(basename $0 | cut -f1 -d.)
VERSION=${VERSION:-$(find . -maxdepth 1 -name "$PRGNAM-*.tar.?z*" | rev | cut -f 3- -d . | cut -f 1 -d - | rev)}
BUILD=${BUILD:-1}
TAG=${TAG:-_gfs}

if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/gfs}
PKG=$TMP/pkg-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}
JOBS=${JOBS:-" -j$(expr $(getconf _NPROCESSORS_ONLN) \* 2 ) "}

if [ "$ARCH" = "i586" ]; then
  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$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

# Bail if user or group isn't valid on your system
if ! grep ^$PRGNAM: /etc/passwd 2>&1 > /dev/null; then
  cat << EOF

  You must have a $PRGNAM user to run this script

  # groupadd -g 363 $PRGNAM
  # useradd -u 363 -d /var/run/$PRGNAM -s /bin/false -g $PRGNAM $PRGNAM

  The disk group is also needed

  # usermod -a -G disk $PRGNAM

EOF
  exit
fi

set -e

UMASKBKP=$(umask)
umask 0022

DEPCHK=""
OPTDEP=""

if [ -z $VERSION ]
 then
 VERSION=3.8.4
fi

MDSCHK=dc5c936d4344dd64799fa0c914fe5324
DWNLCMD=${DWNLCMD:-"wget -c --no-check-certificate"}
SRCDOWN=${SRCDOWN:-"https://pagure.io/sanlock/archive/sanlock-$VERSION/sanlock-sanlock-$VERSION.tar.gz"}

if [ -z $(find . -maxdepth 1 -name "$PRGNAM-$PRGNAM-$VERSION.tar.?z*") ]
then
 $DWNLCMD $SRCDOWN
else
 if md5sum -c <<<"$MDSCHK $(echo $PRGNAM-$PRGNAM-$VERSION.tar.?z*)";
  then
   continue
  else
   rm -rf $PRGNAM-$VERSION.tar.?z*
   $DWNLCMD $SRCDOWN
 fi
fi

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf {,$PRGNAM-}$PRGNAM-$VERSION
tar xvf $CWD/$PRGNAM-$VERSION.tar.gz || tar xvf $CWD/$PRGNAM-$PRGNAM-$VERSION.tar.gz
cd $PRGNAM-$VERSION || cd $PRGNAM-$PRGNAM-$VERSION
chown -R root:root .
find -L . \
 \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
  -o -perm 511 \) -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;

# We don't have stack clash protection support yet
sed -i 's/-fstack-clash-protection//' */Makefile

CFLAGS="$SLKCFLAGS" make $JOBS -C wdmd
CFLAGS="$SLKCFLAGS" make $JOBS -C src
CFLAGS="$SLKCFLAGS" make $JOBS -C python

make -C src install LIBDIR=/usr/lib${LIBDIRSUFFIX} DESTDIR=$PKG
make -C wdmd install LIBDIR=/usr/lib${LIBDIRSUFFIX} DESTDIR=$PKG
make -C python install LIBDIR=/usr/lib${LIBDIRSUFFIX} DESTDIR=$PKG

install -D -m0755 -oroot -groot init.d/sanlock $PKG/etc/rc.d/rc.sanlock.new
install -D -m0755 -oroot -groot init.d/wdmd $PKG/etc/rc.d/rc.wdmd.new
sed -e "s|/etc/sysconfig|/etc/default|g" \
    -i $PKG/etc/rc.d/rc.sanlock.new \
    -i $PKG/etc/rc.d/rc.wdmd.new

install -D -m0644 -oroot -groot src/logrotate.sanlock $PKG/etc/logrotate.d/sanlock.new
install -D -m0644 -oroot -groot src/sanlock.conf $PKG/etc/sanlock/sanlock.conf.new
install -D -m0644 -oroot -groot init.d/wdmd.sysconfig $PKG/etc/default/wdmd.new

mkdir -p $PKG/{etc/wdmd.d,var/run/sanlock}

mv $PKG/usr/share/man $PKG/usr
rmdir $PKG/usr/share

find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

find $PKG/usr/man -type f -exec gzip -9 {} \;
for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a README.rst $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
cat $CWD/README.SLACKWARE > $PKG/usr/doc/$PRGNAM-$VERSION/README.SLACKWARE
cat $CWD/README > $PKG/usr/doc/$PRGNAM-$VERSION/README.SLACKWARE

mkdir -p $PKG/install
#      |-----handy-ruler------------------------------------------------------|
cat <<EOT >$PKG/install/slack-desc
$PRGNAM:
$PRGNAM: sanlock (shared storage daemon)
$PRGNAM:
$PRGNAM: The sanlock daemon manages leases for applications on hosts using
$PRGNAM: shared storage.
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM:
$PRGNAM: Homepage: https://pagure.io/sanlock
$PRGNAM:
EOT

cat <<\EOT >$PKG/install/doinst.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...
}

preserve_perms() {
  NEW="$1"
  OLD="$(dirname $NEW)/$(basename $NEW .new)"
  if [ -e $OLD ]; then
    cp -a $OLD ${NEW}.incoming
    cat $NEW > ${NEW}.incoming
    mv ${NEW}.incoming $NEW
  fi
  config $NEW
}

preserve_perms etc/rc.d/rc.sanlock.new
preserve_perms etc/rc.d/rc.wdmd.new
config etc/logrotate.d/sanlock.new
config etc/sanlock/sanlock.conf.new
config etc/default/wdmd.new
EOT

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

umask ${UMASKBKP}